Commit message: avformat/movenc: Do not pass AVCodecParameters in avpriv_request_sample

Fixes: out of array read
Fixes: ffmpeg_crash_8.avi

Found-by: Thuan Pham, Marcel Böhme, Andrew Santosa and Alexandru Razvan Caciulescu with AFLSmart
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 95556e27e2c1d56d9e18f5db34d6f756f3011148)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
CVE: None
CWE: CWE-125
Vulnerability description: None

Project: FFmpeg
File: movenc.c

static int mov_write_colr_tag(AVIOContext *pb, MOVTrack *track)
{
    // Ref (MOV): https://developer.apple.com/library/mac/technotes/tn2162/_index.html#//apple_ref/doc/uid/DTS40013070-CH1-TNTAG9
    // Ref (MP4): ISO/IEC 14496-12:2012

    if (track->par->color_primaries == AVCOL_PRI_UNSPECIFIED &&
        track->par->color_trc == AVCOL_TRC_UNSPECIFIED &&
        track->par->color_space == AVCOL_SPC_UNSPECIFIED) {
        if ((track->par->width >= 1920 && track->par->height >= 1080)
          || (track->par->width == 1280 && track->par->height == 720)) {
            av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming bt709\n");
            track->par->color_primaries = AVCOL_PRI_BT709;
        } else if (track->par->width == 720 && track->height == 576) {
            av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming bt470bg\n");
            track->par->color_primaries = AVCOL_PRI_BT470BG;
        } else if (track->par->width == 720 &&
                   (track->height == 486 || track->height == 480)) {
            av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, assuming smpte170\n");
            track->par->color_primaries = AVCOL_PRI_SMPTE170M;
        } else {
            av_log(NULL, AV_LOG_WARNING, "color primaries unspecified, unable to assume anything\n");
        }
        switch (track->par->color_primaries) {
        case AVCOL_PRI_BT709:
            track->par->color_trc = AVCOL_TRC_BT709;
            track->par->color_space = AVCOL_SPC_BT709;
            break;
        case AVCOL_PRI_SMPTE170M:
        case AVCOL_PRI_BT470BG:
            track->par->color_trc = AVCOL_TRC_BT709;
            track->par->color_space = AVCOL_SPC_SMPTE170M;
            break;
        }
    }

    /* We should only ever be called by MOV or MP4. */
    av_assert0(track->mode == MODE_MOV || track->mode == MODE_MP4);

    avio_wb32(pb, 18 + (track->mode == MODE_MP4));
    ffio_wfourcc(pb, "colr");
    if (track->mode == MODE_MP4)
        ffio_wfourcc(pb, "nclx");
    else
        ffio_wfourcc(pb, "nclc");
    switch (track->par->color_primaries) {
    case AVCOL_PRI_BT709:     avio_wb16(pb, 1); break;
    case AVCOL_PRI_SMPTE170M:
    case AVCOL_PRI_SMPTE240M: avio_wb16(pb, 6); break;
    case AVCOL_PRI_BT470BG:   avio_wb16(pb, 5); break;
    default:                  avio_wb16(pb, 2);
    }
    switch (track->par->color_trc) {
    case AVCOL_TRC_BT709:     avio_wb16(pb, 1); break;
    case AVCOL_TRC_SMPTE170M: avio_wb16(pb, 1); break; // remapped
    case AVCOL_TRC_SMPTE240M: avio_wb16(pb, 7); break;
    default:                  avio_wb16(pb, 2);
    }
    switch (track->par->color_space) {
    case AVCOL_SPC_BT709:     avio_wb16(pb, 1); break;
    case AVCOL_SPC_BT470BG:
    case AVCOL_SPC_SMPTE170M: avio_wb16(pb, 6); break;
    case AVCOL_SPC_SMPTE240M: avio_wb16(pb, 7); break;
    default:                  avio_wb16(pb, 2);
    }

    if (track->mode == MODE_MP4) {
        int full_range = track->par->color_range == AVCOL_RANGE_JPEG;
        avio_w8(pb, full_range << 7);
        return 19;
    } else {
        return 18;
    }
}

Project: FFmpeg
File: movenc.c

static int mov_write_vpcc_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
{
    int64_t pos = avio_tell(pb);

    avio_wb32(pb, 0);
    ffio_wfourcc(pb, "vpcC");
    avio_wb32(pb, 0); /* version & flags */
    ff_isom_write_vpcc(s, pb, track->par);
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static void enable_tracks(AVFormatContext *s)
{
    MOVMuxContext *mov = s->priv_data;
    int i;
    int enabled[AVMEDIA_TYPE_NB];
    int first[AVMEDIA_TYPE_NB];

    for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
        enabled[i] = 0;
        first[i] = -1;
    }

    for (i = 0; i < s->nb_streams; i++) {
        AVStream *st = s->streams[i];

        if (st->codecpar->codec_type <= AVMEDIA_TYPE_UNKNOWN ||
            st->codecpar->codec_type >= AVMEDIA_TYPE_NB)
            continue;

        if (first[st->codecpar->codec_type] < 0)
            first[st->codecpar->codec_type] = i;
        if (st->disposition & AV_DISPOSITION_DEFAULT) {
            mov->tracks[i].flags |= MOV_TRACK_ENABLED;
            enabled[st->codecpar->codec_type]++;
        }
    }

    for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
        switch (i) {
        case AVMEDIA_TYPE_VIDEO:
        case AVMEDIA_TYPE_AUDIO:
        case AVMEDIA_TYPE_SUBTITLE:
            if (enabled[i] > 1)
                mov->per_stream_grouping = 1;
            if (!enabled[i] && first[i] >= 0)
                mov->tracks[first[i]].flags |= MOV_TRACK_ENABLED;
            break;
        }
    }
}

Project: FFmpeg
File: movenc.c

static int mov_write_video_tag(AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
{
    int64_t pos = avio_tell(pb);
    char compressor_name[32] = { 0 };
    int avid = 0;

    avio_wb32(pb, 0); /* size */
    if (mov->encryption_scheme != MOV_ENC_NONE) {
        ffio_wfourcc(pb, "encv");
    } else {
        avio_wl32(pb, track->tag); // store it byteswapped
    }
    avio_wb32(pb, 0); /* Reserved */
    avio_wb16(pb, 0); /* Reserved */
    avio_wb16(pb, 1); /* Data-reference index */

    avio_wb16(pb, 0); /* Codec stream version */
    avio_wb16(pb, 0); /* Codec stream revision (=0) */
    if (track->mode == MODE_MOV) {
        ffio_wfourcc(pb, "FFMP"); /* Vendor */
        if (track->par->codec_id == AV_CODEC_ID_RAWVIDEO) {
            avio_wb32(pb, 0); /* Temporal Quality */
            avio_wb32(pb, 0x400); /* Spatial Quality = lossless*/
        } else {
            avio_wb32(pb, 0x200); /* Temporal Quality = normal */
            avio_wb32(pb, 0x200); /* Spatial Quality = normal */
        }
    } else {
        avio_wb32(pb, 0); /* Reserved */
        avio_wb32(pb, 0); /* Reserved */
        avio_wb32(pb, 0); /* Reserved */
    }
    avio_wb16(pb, track->par->width); /* Video width */
    avio_wb16(pb, track->height); /* Video height */
    avio_wb32(pb, 0x00480000); /* Horizontal resolution 72dpi */
    avio_wb32(pb, 0x00480000); /* Vertical resolution 72dpi */
    avio_wb32(pb, 0); /* Data size (= 0) */
    avio_wb16(pb, 1); /* Frame count (= 1) */

    /* FIXME not sure, ISO 14496-1 draft where it shall be set to 0 */
    find_compressor(compressor_name, 32, track);
    avio_w8(pb, strlen(compressor_name));
    avio_write(pb, compressor_name, 31);

    if (track->mode == MODE_MOV && track->par->bits_per_coded_sample)
        avio_wb16(pb, track->par->bits_per_coded_sample |
                  (track->par->format == AV_PIX_FMT_GRAY8 ? 0x20 : 0));
    else
        avio_wb16(pb, 0x18); /* Reserved */

    if (track->mode == MODE_MOV && track->par->format == AV_PIX_FMT_PAL8) {
        int pal_size = 1 << track->par->bits_per_coded_sample;
        int i;
        avio_wb16(pb, 0);             /* Color table ID */
        avio_wb32(pb, 0);             /* Color table seed */
        avio_wb16(pb, 0x8000);        /* Color table flags */
        avio_wb16(pb, pal_size - 1);  /* Color table size (zero-relative) */
        for (i = 0; i < pal_size; i++) {
            uint32_t rgb = track->palette[i];
            uint16_t r = (rgb >> 16) & 0xff;
            uint16_t g = (rgb >> 8)  & 0xff;
            uint16_t b = rgb         & 0xff;
            avio_wb16(pb, 0);
            avio_wb16(pb, (r << 8) | r);
            avio_wb16(pb, (g << 8) | g);
            avio_wb16(pb, (b << 8) | b);
        }
    } else
        avio_wb16(pb, 0xffff); /* Reserved */

    if (track->tag == MKTAG('m','p','4','v'))
        mov_write_esds_tag(pb, track);
    else if (track->par->codec_id == AV_CODEC_ID_H263)
        mov_write_d263_tag(pb);
    else if (track->par->codec_id == AV_CODEC_ID_AVUI ||
            track->par->codec_id == AV_CODEC_ID_SVQ3) {
        mov_write_extradata_tag(pb, track);
        avio_wb32(pb, 0);
    } else if (track->par->codec_id == AV_CODEC_ID_DNXHD) {
        mov_write_avid_tag(pb, track);
        avid = 1;
    } else if (track->par->codec_id == AV_CODEC_ID_HEVC)
        mov_write_hvcc_tag(pb, track);
    else if (track->par->codec_id == AV_CODEC_ID_H264 && !TAG_IS_AVCI(track->tag)) {
        mov_write_avcc_tag(pb, track);
        if (track->mode == MODE_IPOD)
            mov_write_uuid_tag_ipod(pb);
    } else if (track->par->codec_id == AV_CODEC_ID_VP9) {
        mov_write_vpcc_tag(mov->fc, pb, track);
    } else if (track->par->codec_id == AV_CODEC_ID_VC1 && track->vos_len > 0)
        mov_write_dvc1_tag(pb, track);
    else if (track->par->codec_id == AV_CODEC_ID_VP6F ||
             track->par->codec_id == AV_CODEC_ID_VP6A) {
        /* Don't write any potential extradata here - the cropping
         * is signalled via the normal width/height fields. */
    } else if (track->par->codec_id == AV_CODEC_ID_R10K) {
        if (track->par->codec_tag == MKTAG('R','1','0','k'))
            mov_write_dpxe_tag(pb, track);
    } else if (track->vos_len > 0)
        mov_write_glbl_tag(pb, track);

    if (track->par->codec_id != AV_CODEC_ID_H264 &&
        track->par->codec_id != AV_CODEC_ID_MPEG4 &&
        track->par->codec_id != AV_CODEC_ID_DNXHD) {
        int field_order = track->par->field_order;

#if FF_API_LAVF_AVCTX
    FF_DISABLE_DEPRECATION_WARNINGS
    if (field_order != track->st->codec->field_order && track->st->codec->field_order != AV_FIELD_UNKNOWN)
        field_order = track->st->codec->field_order;
    FF_ENABLE_DEPRECATION_WARNINGS
#endif

        if (field_order != AV_FIELD_UNKNOWN)
            mov_write_fiel_tag(pb, track, field_order);
    }

    if (mov->flags & FF_MOV_FLAG_WRITE_GAMA) {
        if (track->mode == MODE_MOV)
            mov_write_gama_tag(pb, track, mov->gamma);
        else
            av_log(mov->fc, AV_LOG_WARNING, "Not writing 'gama' atom. Format is not MOV.\n");
    }
    if (mov->flags & FF_MOV_FLAG_WRITE_COLR) {
        if (track->mode == MODE_MOV || track->mode == MODE_MP4)
            mov_write_colr_tag(pb, track);
        else
            av_log(mov->fc, AV_LOG_WARNING, "Not writing 'colr' atom. Format is not MOV or MP4.\n");
    }

    if (track->par->sample_aspect_ratio.den && track->par->sample_aspect_ratio.num) {
        mov_write_pasp_tag(pb, track);
    }

    if (mov->encryption_scheme != MOV_ENC_NONE) {
        ff_mov_cenc_write_sinf_tag(track, pb, mov->encryption_kid);
    }

    /* extra padding for avid stsd */
    /* https://developer.apple.com/library/mac/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-61112 */
    if (avid)
        avio_wb32(pb, 0);

    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_write_moof_tag(AVIOContext *pb, MOVMuxContext *mov, int tracks,
                              int64_t mdat_size)
{
    AVIOContext *avio_buf;
    int ret, moof_size;

    if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
        return ret;
    mov_write_moof_tag_internal(avio_buf, mov, tracks, 0);
    moof_size = ffio_close_null_buf(avio_buf);

    if (mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_GLOBAL_SIDX))
        mov_write_sidx_tags(pb, mov, tracks, moof_size + 8 + mdat_size);

    if ((ret = mov_add_tfra_entries(pb, mov, tracks, moof_size + 8 + mdat_size)) < 0)
        return ret;

    return mov_write_moof_tag_internal(pb, mov, tracks, moof_size);
}

Project: FFmpeg
File: movenc.c

static int mov_get_h264_codec_tag(AVFormatContext *s, MOVTrack *track)
{
    int tag = track->par->codec_tag;
    int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
    AVStream *st = track->st;
    int rate = av_q2d(find_fps(s, st));

    if (!tag)
        tag = MKTAG('a', 'v', 'c', 'i'); //fallback tag

    if (track->par->format == AV_PIX_FMT_YUV420P10) {
        if (track->par->width == 960 && track->par->height == 720) {
            if (!interlaced) {
                if      (rate == 24) tag = MKTAG('a','i','5','p');
                else if (rate == 25) tag = MKTAG('a','i','5','q');
                else if (rate == 30) tag = MKTAG('a','i','5','p');
                else if (rate == 50) tag = MKTAG('a','i','5','q');
                else if (rate == 60) tag = MKTAG('a','i','5','p');
            }
        } else if (track->par->width == 1440 && track->par->height == 1080) {
            if (!interlaced) {
                if      (rate == 24) tag = MKTAG('a','i','5','3');
                else if (rate == 25) tag = MKTAG('a','i','5','2');
                else if (rate == 30) tag = MKTAG('a','i','5','3');
            } else {
                if      (rate == 50) tag = MKTAG('a','i','5','5');
                else if (rate == 60) tag = MKTAG('a','i','5','6');
            }
        }
    } else if (track->par->format == AV_PIX_FMT_YUV422P10) {
        if (track->par->width == 1280 && track->par->height == 720) {
            if (!interlaced) {
                if      (rate == 24) tag = MKTAG('a','i','1','p');
                else if (rate == 25) tag = MKTAG('a','i','1','q');
                else if (rate == 30) tag = MKTAG('a','i','1','p');
                else if (rate == 50) tag = MKTAG('a','i','1','q');
                else if (rate == 60) tag = MKTAG('a','i','1','p');
            }
        } else if (track->par->width == 1920 && track->par->height == 1080) {
            if (!interlaced) {
                if      (rate == 24) tag = MKTAG('a','i','1','3');
                else if (rate == 25) tag = MKTAG('a','i','1','2');
                else if (rate == 30) tag = MKTAG('a','i','1','3');
            } else {
                if      (rate == 25) tag = MKTAG('a','i','1','5');
                else if (rate == 50) tag = MKTAG('a','i','1','5');
                else if (rate == 60) tag = MKTAG('a','i','1','6');
            }
        } else if (   track->par->width == 4096 && track->par->height == 2160
                   || track->par->width == 3840 && track->par->height == 2160
                   || track->par->width == 2048 && track->par->height == 1080) {
            tag = MKTAG('a','i','v','x');
        }
    }

    return tag;
}

Project: FFmpeg
File: movenc.c

static int mov_write_trun_tag(AVIOContext *pb, MOVMuxContext *mov,
                              MOVTrack *track, int moof_size,
                              int first, int end)
{
    int64_t pos = avio_tell(pb);
    uint32_t flags = MOV_TRUN_DATA_OFFSET;
    int i;

    for (i = first; i < end; i++) {
        if (get_cluster_duration(track, i) != track->default_duration)
            flags |= MOV_TRUN_SAMPLE_DURATION;
        if (track->cluster[i].size != track->default_size)
            flags |= MOV_TRUN_SAMPLE_SIZE;
        if (i > first && get_sample_flags(track, &track->cluster[i]) != track->default_sample_flags)
            flags |= MOV_TRUN_SAMPLE_FLAGS;
    }
    if (!(flags & MOV_TRUN_SAMPLE_FLAGS) && track->entry > 0 &&
         get_sample_flags(track, &track->cluster[0]) != track->default_sample_flags)
        flags |= MOV_TRUN_FIRST_SAMPLE_FLAGS;
    if (track->flags & MOV_TRACK_CTTS)
        flags |= MOV_TRUN_SAMPLE_CTS;

    avio_wb32(pb, 0); /* size placeholder */
    ffio_wfourcc(pb, "trun");
    avio_w8(pb, 0); /* version */
    avio_wb24(pb, flags);

    avio_wb32(pb, end - first); /* sample count */
    if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
        !(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF) &&
        !mov->first_trun)
        avio_wb32(pb, 0); /* Later tracks follow immediately after the previous one */
    else
        avio_wb32(pb, moof_size + 8 + track->data_offset +
                      track->cluster[first].pos); /* data offset */
    if (flags & MOV_TRUN_FIRST_SAMPLE_FLAGS)
        avio_wb32(pb, get_sample_flags(track, &track->cluster[first]));

    for (i = first; i < end; i++) {
        if (flags & MOV_TRUN_SAMPLE_DURATION)
            avio_wb32(pb, get_cluster_duration(track, i));
        if (flags & MOV_TRUN_SAMPLE_SIZE)
            avio_wb32(pb, track->cluster[i].size);
        if (flags & MOV_TRUN_SAMPLE_FLAGS)
            avio_wb32(pb, get_sample_flags(track, &track->cluster[i]));
        if (flags & MOV_TRUN_SAMPLE_CTS)
            avio_wb32(pb, track->cluster[i].cts);
    }

    mov->first_trun = 0;
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_write_uuidprof_tag(AVIOContext *pb, AVFormatContext *s)
{
    AVStream       *video_st    = s->streams[0];
    AVCodecParameters *video_par = s->streams[0]->codecpar;
    AVCodecParameters *audio_par = s->streams[1]->codecpar;
    int audio_rate = audio_par->sample_rate;
    int64_t frame_rate = (video_st->avg_frame_rate.num * 0x10000LL) / video_st->avg_frame_rate.den;
    int audio_kbitrate = audio_par->bit_rate / 1000;
    int video_kbitrate = FFMIN(video_par->bit_rate / 1000, 800 - audio_kbitrate);

    if (frame_rate < 0 || frame_rate > INT32_MAX) {
        av_log(s, AV_LOG_ERROR, "Frame rate %f outside supported range\n", frame_rate / (double)0x10000);
        return AVERROR(EINVAL);
    }

    avio_wb32(pb, 0x94); /* size */
    ffio_wfourcc(pb, "uuid");
    ffio_wfourcc(pb, "PROF");

    avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
    avio_wb32(pb, 0xbb88695c);
    avio_wb32(pb, 0xfac9c740);

    avio_wb32(pb, 0x0);  /* ? */
    avio_wb32(pb, 0x3);  /* 3 sections ? */

    avio_wb32(pb, 0x14); /* size */
    ffio_wfourcc(pb, "FPRF");
    avio_wb32(pb, 0x0);  /* ? */
    avio_wb32(pb, 0x0);  /* ? */
    avio_wb32(pb, 0x0);  /* ? */

    avio_wb32(pb, 0x2c);  /* size */
    ffio_wfourcc(pb, "APRF"); /* audio */
    avio_wb32(pb, 0x0);
    avio_wb32(pb, 0x2);   /* TrackID */
    ffio_wfourcc(pb, "mp4a");
    avio_wb32(pb, 0x20f);
    avio_wb32(pb, 0x0);
    avio_wb32(pb, audio_kbitrate);
    avio_wb32(pb, audio_kbitrate);
    avio_wb32(pb, audio_rate);
    avio_wb32(pb, audio_par->channels);

    avio_wb32(pb, 0x34);  /* size */
    ffio_wfourcc(pb, "VPRF");   /* video */
    avio_wb32(pb, 0x0);
    avio_wb32(pb, 0x1);    /* TrackID */
    if (video_par->codec_id == AV_CODEC_ID_H264) {
        ffio_wfourcc(pb, "avc1");
        avio_wb16(pb, 0x014D);
        avio_wb16(pb, 0x0015);
    } else {
        ffio_wfourcc(pb, "mp4v");
        avio_wb16(pb, 0x0000);
        avio_wb16(pb, 0x0103);
    }
    avio_wb32(pb, 0x0);
    avio_wb32(pb, video_kbitrate);
    avio_wb32(pb, video_kbitrate);
    avio_wb32(pb, frame_rate);
    avio_wb32(pb, frame_rate);
    avio_wb16(pb, video_par->width);
    avio_wb16(pb, video_par->height);
    avio_wb32(pb, 0x010001); /* ? */

    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_ilst_tag(AVIOContext *pb, MOVMuxContext *mov,
                              AVFormatContext *s)
{
    int64_t pos = avio_tell(pb);
    avio_wb32(pb, 0); /* size */
    ffio_wfourcc(pb, "ilst");
    mov_write_string_metadata(s, pb, "\251nam", "title"    , 1);
    mov_write_string_metadata(s, pb, "\251ART", "artist"   , 1);
    mov_write_string_metadata(s, pb, "aART", "album_artist", 1);
    mov_write_string_metadata(s, pb, "\251wrt", "composer" , 1);
    mov_write_string_metadata(s, pb, "\251alb", "album"    , 1);
    mov_write_string_metadata(s, pb, "\251day", "date"     , 1);
    if (!mov_write_string_metadata(s, pb, "\251too", "encoding_tool", 1)) {
        if (!(s->flags & AVFMT_FLAG_BITEXACT))
            mov_write_string_tag(pb, "\251too", LIBAVFORMAT_IDENT, 0, 1);
    }
    mov_write_string_metadata(s, pb, "\251cmt", "comment"  , 1);
    mov_write_string_metadata(s, pb, "\251gen", "genre"    , 1);
    mov_write_string_metadata(s, pb, "\251cpy", "copyright", 1);
    mov_write_string_metadata(s, pb, "\251grp", "grouping" , 1);
    mov_write_string_metadata(s, pb, "\251lyr", "lyrics"   , 1);
    mov_write_string_metadata(s, pb, "desc",    "description",1);
    mov_write_string_metadata(s, pb, "ldes",    "synopsis" , 1);
    mov_write_string_metadata(s, pb, "tvsh",    "show"     , 1);
    mov_write_string_metadata(s, pb, "tven",    "episode_id",1);
    mov_write_string_metadata(s, pb, "tvnn",    "network"  , 1);
    mov_write_int8_metadata  (s, pb, "tves",    "episode_sort",4);
    mov_write_int8_metadata  (s, pb, "tvsn",    "season_number",4);
    mov_write_int8_metadata  (s, pb, "stik",    "media_type",1);
    mov_write_int8_metadata  (s, pb, "hdvd",    "hd_video",  1);
    mov_write_int8_metadata  (s, pb, "pgap",    "gapless_playback",1);
    mov_write_int8_metadata  (s, pb, "cpil",    "compilation", 1);
    mov_write_trkn_tag(pb, mov, s, 0); // track number
    mov_write_trkn_tag(pb, mov, s, 1); // disc number
    mov_write_tmpo_tag(pb, s);
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_add_tfra_entries(AVIOContext *pb, MOVMuxContext *mov, int tracks,
                                int size)
{
    int i;
    for (i = 0; i < mov->nb_streams; i++) {
        MOVTrack *track = &mov->tracks[i];
        MOVFragmentInfo *info;
        if ((tracks >= 0 && i != tracks) || !track->entry)
            continue;
        track->nb_frag_info++;
        if (track->nb_frag_info >= track->frag_info_capacity) {
            unsigned new_capacity = track->nb_frag_info + MOV_FRAG_INFO_ALLOC_INCREMENT;
            if (av_reallocp_array(&track->frag_info,
                                  new_capacity,
                                  sizeof(*track->frag_info)))
                return AVERROR(ENOMEM);
            track->frag_info_capacity = new_capacity;
        }
        info = &track->frag_info[track->nb_frag_info - 1];
        info->offset   = avio_tell(pb);
        info->size     = size;
        // Try to recreate the original pts for the first packet
        // from the fields we have stored
        info->time     = track->start_dts + track->frag_start +
                         track->cluster[0].cts;
        info->duration = track->end_pts -
                         (track->cluster[0].dts + track->cluster[0].cts);
        // If the pts is less than zero, we will have trimmed
        // away parts of the media track using an edit list,
        // and the corresponding start presentation time is zero.
        if (info->time < 0) {
            info->duration += info->time;
            info->time = 0;
        }
        info->tfrf_offset = 0;
        mov_write_tfrf_tags(pb, mov, track);
    }
    return 0;
}

Project: FFmpeg
File: movenc.c

int ff_mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
    MOVMuxContext *mov = s->priv_data;
    AVIOContext *pb = s->pb;
    MOVTrack *trk = &mov->tracks[pkt->stream_index];
    AVCodecParameters *par = trk->par;
    unsigned int samples_in_chunk = 0;
    int size = pkt->size, ret = 0;
    uint8_t *reformatted_data = NULL;

    ret = check_pkt(s, pkt);
    if (ret < 0)
        return ret;

    if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
        int ret;
        if (mov->moov_written || mov->flags & FF_MOV_FLAG_EMPTY_MOOV) {
            if (mov->frag_interleave && mov->fragments > 0) {
                if (trk->entry - trk->entries_flushed >= mov->frag_interleave) {
                    if ((ret = mov_flush_fragment_interleaving(s, trk)) < 0)
                        return ret;
                }
            }

            if (!trk->mdat_buf) {
                if ((ret = avio_open_dyn_buf(&trk->mdat_buf)) < 0)
                    return ret;
            }
            pb = trk->mdat_buf;
        } else {
            if (!mov->mdat_buf) {
                if ((ret = avio_open_dyn_buf(&mov->mdat_buf)) < 0)
                    return ret;
            }
            pb = mov->mdat_buf;
        }
    }

    if (par->codec_id == AV_CODEC_ID_AMR_NB) {
        /* We must find out how many AMR blocks there are in one packet */
        static const uint16_t packed_size[16] =
            {13, 14, 16, 18, 20, 21, 27, 32, 6, 0, 0, 0, 0, 0, 0, 1};
        int len = 0;

        while (len < size && samples_in_chunk < 100) {
            len += packed_size[(pkt->data[len] >> 3) & 0x0F];
            samples_in_chunk++;
        }
        if (samples_in_chunk > 1) {
            av_log(s, AV_LOG_ERROR, "fatal error, input is not a single packet, implement a AVParser for it\n");
            return -1;
        }
    } else if (par->codec_id == AV_CODEC_ID_ADPCM_MS ||
               par->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV) {
        samples_in_chunk = trk->par->frame_size;
    } else if (trk->sample_size)
        samples_in_chunk = size / trk->sample_size;
    else
        samples_in_chunk = 1;

    /* copy extradata if it exists */
    if (trk->vos_len == 0 && par->extradata_size > 0 &&
        !TAG_IS_AVCI(trk->tag) &&
        (par->codec_id != AV_CODEC_ID_DNXHD)) {
        trk->vos_len  = par->extradata_size;
        trk->vos_data = av_malloc(trk->vos_len);
        if (!trk->vos_data) {
            ret = AVERROR(ENOMEM);
            goto err;
        }
        memcpy(trk->vos_data, par->extradata, trk->vos_len);
    }

    if (par->codec_id == AV_CODEC_ID_AAC && pkt->size > 2 &&
        (AV_RB16(pkt->data) & 0xfff0) == 0xfff0) {
        if (!s->streams[pkt->stream_index]->nb_frames) {
            av_log(s, AV_LOG_ERROR, "Malformed AAC bitstream detected: "
                   "use the audio bitstream filter 'aac_adtstoasc' to fix it "
                   "('-bsf:a aac_adtstoasc' option with ffmpeg)\n");
            return -1;
        }
        av_log(s, AV_LOG_WARNING, "aac bitstream error\n");
    }
    if (par->codec_id == AV_CODEC_ID_H264 && trk->vos_len > 0 && *(uint8_t *)trk->vos_data != 1 && !TAG_IS_AVCI(trk->tag)) {
        /* from x264 or from bytestream H.264 */
        /* NAL reformatting needed */
        if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
            ff_avc_parse_nal_units_buf(pkt->data, &reformatted_data,
                                       &size);
            avio_write(pb, reformatted_data, size);
        } else {
            if (mov->encryption_scheme == MOV_ENC_CENC_AES_CTR) {
                size = ff_mov_cenc_avc_parse_nal_units(&trk->cenc, pb, pkt->data, size);
                if (size < 0) {
                    ret = size;
                    goto err;
                }
            } else {
                size = ff_avc_parse_nal_units(pb, pkt->data, pkt->size);
            }
        }
    } else if (par->codec_id == AV_CODEC_ID_HEVC && trk->vos_len > 6 &&
               (AV_RB24(trk->vos_data) == 1 || AV_RB32(trk->vos_data) == 1)) {
        /* extradata is Annex B, assume the bitstream is too and convert it */
        if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams) {
            ff_hevc_annexb2mp4_buf(pkt->data, &reformatted_data, &size, 0, NULL);
            avio_write(pb, reformatted_data, size);
        } else {
            size = ff_hevc_annexb2mp4(pb, pkt->data, pkt->size, 0, NULL);
        }
#if CONFIG_AC3_PARSER
    } else if (par->codec_id == AV_CODEC_ID_EAC3) {
        size = handle_eac3(mov, pkt, trk);
        if (size < 0)
            return size;
        else if (!size)
            goto end;
        avio_write(pb, pkt->data, size);
#endif
    } else {
        if (mov->encryption_scheme == MOV_ENC_CENC_AES_CTR) {
            if (par->codec_id == AV_CODEC_ID_H264 && par->extradata_size > 4) {
                int nal_size_length = (par->extradata[4] & 0x3) + 1;
                ret = ff_mov_cenc_avc_write_nal_units(s, &trk->cenc, nal_size_length, pb, pkt->data, size);
            } else {
                ret = ff_mov_cenc_write_packet(&trk->cenc, pb, pkt->data, size);
            }

            if (ret) {
                goto err;
            }
        } else {
            avio_write(pb, pkt->data, size);
        }
    }

    if ((par->codec_id == AV_CODEC_ID_DNXHD ||
         par->codec_id == AV_CODEC_ID_AC3) && !trk->vos_len) {
        /* copy frame to create needed atoms */
        trk->vos_len  = size;
        trk->vos_data = av_malloc(size);
        if (!trk->vos_data) {
            ret = AVERROR(ENOMEM);
            goto err;
        }
        memcpy(trk->vos_data, pkt->data, size);
    }

    if (trk->entry >= trk->cluster_capacity) {
        unsigned new_capacity = 2 * (trk->entry + MOV_INDEX_CLUSTER_SIZE);
        if (av_reallocp_array(&trk->cluster, new_capacity,
                              sizeof(*trk->cluster))) {
            ret = AVERROR(ENOMEM);
            goto err;
        }
        trk->cluster_capacity = new_capacity;
    }

    trk->cluster[trk->entry].pos              = avio_tell(pb) - size;
    trk->cluster[trk->entry].samples_in_chunk = samples_in_chunk;
    trk->cluster[trk->entry].chunkNum         = 0;
    trk->cluster[trk->entry].size             = size;
    trk->cluster[trk->entry].entries          = samples_in_chunk;
    trk->cluster[trk->entry].dts              = pkt->dts;
    if (!trk->entry && trk->start_dts != AV_NOPTS_VALUE) {
        if (!trk->frag_discont) {
            /* First packet of a new fragment. We already wrote the duration
             * of the last packet of the previous fragment based on track_duration,
             * which might not exactly match our dts. Therefore adjust the dts
             * of this packet to be what the previous packets duration implies. */
            trk->cluster[trk->entry].dts = trk->start_dts + trk->track_duration;
            /* We also may have written the pts and the corresponding duration
             * in sidx/tfrf/tfxd tags; make sure the sidx pts and duration match up with
             * the next fragment. This means the cts of the first sample must
             * be the same in all fragments, unless end_pts was updated by
             * the packet causing the fragment to be written. */
            if ((mov->flags & FF_MOV_FLAG_DASH && !(mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)) ||
                mov->mode == MODE_ISM)
                pkt->pts = pkt->dts + trk->end_pts - trk->cluster[trk->entry].dts;
        } else {
            /* New fragment, but discontinuous from previous fragments.
             * Pretend the duration sum of the earlier fragments is
             * pkt->dts - trk->start_dts. */
            trk->frag_start = pkt->dts - trk->start_dts;
            trk->end_pts = AV_NOPTS_VALUE;
            trk->frag_discont = 0;
        }
    }

    if (!trk->entry && trk->start_dts == AV_NOPTS_VALUE && !mov->use_editlist &&
        s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
        /* Not using edit lists and shifting the first track to start from zero.
         * If the other streams start from a later timestamp, we won't be able
         * to signal the difference in starting time without an edit list.
         * Thus move the timestamp for this first sample to 0, increasing
         * its duration instead. */
        trk->cluster[trk->entry].dts = trk->start_dts = 0;
    }
    if (trk->start_dts == AV_NOPTS_VALUE) {
        trk->start_dts = pkt->dts;
        if (trk->frag_discont) {
            if (mov->use_editlist) {
                /* Pretend the whole stream started at pts=0, with earlier fragments
                 * already written. If the stream started at pts=0, the duration sum
                 * of earlier fragments would have been pkt->pts. */
                trk->frag_start = pkt->pts;
                trk->start_dts  = pkt->dts - pkt->pts;
            } else {
                /* Pretend the whole stream started at dts=0, with earlier fragments
                 * already written, with a duration summing up to pkt->dts. */
                trk->frag_start = pkt->dts;
                trk->start_dts  = 0;
            }
            trk->frag_discont = 0;
        } else if (pkt->dts && mov->moov_written)
            av_log(s, AV_LOG_WARNING,
                   "Track %d starts with a nonzero dts %"PRId64", while the moov "
                   "already has been written. Set the delay_moov flag to handle "
                   "this case.\n",
                   pkt->stream_index, pkt->dts);
    }
    trk->track_duration = pkt->dts - trk->start_dts + pkt->duration;
    trk->last_sample_is_subtitle_end = 0;

    if (pkt->pts == AV_NOPTS_VALUE) {
        av_log(s, AV_LOG_WARNING, "pts has no value\n");
        pkt->pts = pkt->dts;
    }
    if (pkt->dts != pkt->pts)
        trk->flags |= MOV_TRACK_CTTS;
    trk->cluster[trk->entry].cts   = pkt->pts - pkt->dts;
    trk->cluster[trk->entry].flags = 0;
    if (trk->start_cts == AV_NOPTS_VALUE)
        trk->start_cts = pkt->pts - pkt->dts;
    if (trk->end_pts == AV_NOPTS_VALUE)
        trk->end_pts = trk->cluster[trk->entry].dts +
                       trk->cluster[trk->entry].cts + pkt->duration;
    else
        trk->end_pts = FFMAX(trk->end_pts, trk->cluster[trk->entry].dts +
                                           trk->cluster[trk->entry].cts +
                                           pkt->duration);

    if (par->codec_id == AV_CODEC_ID_VC1) {
        mov_parse_vc1_frame(pkt, trk);
    } else if (pkt->flags & AV_PKT_FLAG_KEY) {
        if (mov->mode == MODE_MOV && par->codec_id == AV_CODEC_ID_MPEG2VIDEO &&
            trk->entry > 0) { // force sync sample for the first key frame
            mov_parse_mpeg2_frame(pkt, &trk->cluster[trk->entry].flags);
            if (trk->cluster[trk->entry].flags & MOV_PARTIAL_SYNC_SAMPLE)
                trk->flags |= MOV_TRACK_STPS;
        } else {
            trk->cluster[trk->entry].flags = MOV_SYNC_SAMPLE;
        }
        if (trk->cluster[trk->entry].flags & MOV_SYNC_SAMPLE)
            trk->has_keyframes++;
    }
    trk->entry++;
    trk->sample_count += samples_in_chunk;
    mov->mdat_size    += size;

    if (trk->hint_track >= 0 && trk->hint_track < mov->nb_streams)
        ff_mov_add_hinted_packet(s, pkt, trk->hint_track, trk->entry,
                                 reformatted_data, size);

end:
err:

    av_free(reformatted_data);
    return ret;
}

Project: FFmpeg
File: movenc.c

static int mp4_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
    int tag = track->par->codec_tag;

    if (!ff_codec_get_tag(ff_mp4_obj_type, track->par->codec_id))
        return 0;

    if      (track->par->codec_id == AV_CODEC_ID_H264)      tag = MKTAG('a','v','c','1');
    else if (track->par->codec_id == AV_CODEC_ID_HEVC)      tag = MKTAG('h','e','v','1');
    else if (track->par->codec_id == AV_CODEC_ID_VP9)       tag = MKTAG('v','p','0','9');
    else if (track->par->codec_id == AV_CODEC_ID_AC3)       tag = MKTAG('a','c','-','3');
    else if (track->par->codec_id == AV_CODEC_ID_EAC3)      tag = MKTAG('e','c','-','3');
    else if (track->par->codec_id == AV_CODEC_ID_DIRAC)     tag = MKTAG('d','r','a','c');
    else if (track->par->codec_id == AV_CODEC_ID_MOV_TEXT)  tag = MKTAG('t','x','3','g');
    else if (track->par->codec_id == AV_CODEC_ID_VC1)       tag = MKTAG('v','c','-','1');
    else if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)  tag = MKTAG('m','p','4','v');
    else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)  tag = MKTAG('m','p','4','a');
    else if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)  tag = MKTAG('m','p','4','s');

    return tag;
}

Project: FFmpeg
File: movenc.c

static int get_samples_per_packet(MOVTrack *track)
{
    int i, first_duration;

// return track->par->frame_size;

    /* use 1 for raw PCM */
    if (!track->audio_vbr)
        return 1;

    /* check to see if duration is constant for all clusters */
    if (!track->entry)
        return 0;
    first_duration = get_cluster_duration(track, 0);
    for (i = 1; i < track->entry; i++) {
        if (get_cluster_duration(track, i) != first_duration)
            return 0;
    }
    return first_duration;
}

Project: FFmpeg
File: movenc.c

static int mov_write_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
                              AVFormatContext *s)
{
    AVIOContext *pb_buf;
    int ret, size;
    uint8_t *buf;

    ret = avio_open_dyn_buf(&pb_buf);
    if (ret < 0)
        return ret;

    if (mov->mode & MODE_3GP) {
        mov_write_3gp_udta_tag(pb_buf, s, "perf", "artist");
        mov_write_3gp_udta_tag(pb_buf, s, "titl", "title");
        mov_write_3gp_udta_tag(pb_buf, s, "auth", "author");
        mov_write_3gp_udta_tag(pb_buf, s, "gnre", "genre");
        mov_write_3gp_udta_tag(pb_buf, s, "dscp", "comment");
        mov_write_3gp_udta_tag(pb_buf, s, "albm", "album");
        mov_write_3gp_udta_tag(pb_buf, s, "cprt", "copyright");
        mov_write_3gp_udta_tag(pb_buf, s, "yrrc", "date");
        mov_write_loci_tag(s, pb_buf);
    } else if (mov->mode == MODE_MOV && !(mov->flags & FF_MOV_FLAG_USE_MDTA)) { // the title field breaks gtkpod with mp4 and my suspicion is that stuff is not valid in mp4
        mov_write_string_metadata(s, pb_buf, "\251ART", "artist",      0);
        mov_write_string_metadata(s, pb_buf, "\251nam", "title",       0);
        mov_write_string_metadata(s, pb_buf, "\251aut", "author",      0);
        mov_write_string_metadata(s, pb_buf, "\251alb", "album",       0);
        mov_write_string_metadata(s, pb_buf, "\251day", "date",        0);
        mov_write_string_metadata(s, pb_buf, "\251swr", "encoder",     0);
        // currently ignored by mov.c
        mov_write_string_metadata(s, pb_buf, "\251des", "comment",     0);
        // add support for libquicktime, this atom is also actually read by mov.c
        mov_write_string_metadata(s, pb_buf, "\251cmt", "comment",     0);
        mov_write_string_metadata(s, pb_buf, "\251gen", "genre",       0);
        mov_write_string_metadata(s, pb_buf, "\251cpy", "copyright",   0);
        mov_write_string_metadata(s, pb_buf, "\251mak", "make",        0);
        mov_write_string_metadata(s, pb_buf, "\251mod", "model",       0);
        mov_write_string_metadata(s, pb_buf, "\251xyz", "location",    0);
        mov_write_raw_metadata_tag(s, pb_buf, "XMP_", "xmp");
    } else {
        /* iTunes meta data */
        mov_write_meta_tag(pb_buf, mov, s);
        mov_write_loci_tag(s, pb_buf);
    }

    if (s->nb_chapters && !(mov->flags & FF_MOV_FLAG_DISABLE_CHPL))
        mov_write_chpl_tag(pb_buf, s);

    if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
        avio_wb32(pb, size + 8);
        ffio_wfourcc(pb, "udta");
        avio_write(pb, buf, size);
    }
    av_free(buf);

    return 0;
}

Project: FFmpeg
File: movenc.c

static void mov_free(AVFormatContext *s)
{
    MOVMuxContext *mov = s->priv_data;
    int i;

    if (mov->chapter_track) {
        if (mov->tracks[mov->chapter_track].par)
            av_freep(&mov->tracks[mov->chapter_track].par->extradata);
        av_freep(&mov->tracks[mov->chapter_track].par);
    }

    for (i = 0; i < mov->nb_streams; i++) {
        if (mov->tracks[i].tag == MKTAG('r','t','p',' '))
            ff_mov_close_hinting(&mov->tracks[i]);
        else if (mov->tracks[i].tag == MKTAG('t','m','c','d') && mov->nb_meta_tmcd)
            av_freep(&mov->tracks[i].par);
        av_freep(&mov->tracks[i].cluster);
        av_freep(&mov->tracks[i].frag_info);

        if (mov->tracks[i].vos_len)
            av_freep(&mov->tracks[i].vos_data);

        ff_mov_cenc_free(&mov->tracks[i].cenc);
    }

    av_freep(&mov->tracks);
}

Project: FFmpeg
File: movenc.c

static int mov_check_bitstream(struct AVFormatContext *s, const AVPacket *pkt)
{
    int ret = 1;
    AVStream *st = s->streams[pkt->stream_index];

    if (st->codecpar->codec_id == AV_CODEC_ID_AAC) {
        if (pkt->size > 2 && (AV_RB16(pkt->data) & 0xfff0) == 0xfff0)
            ret = ff_stream_add_bitstream_filter(st, "aac_adtstoasc", NULL);
    }

    return ret;
}

Project: FFmpeg
File: movenc.c

static int mov_create_chapter_track(AVFormatContext *s, int tracknum)
{
    AVIOContext *pb;

    MOVMuxContext *mov = s->priv_data;
    MOVTrack *track = &mov->tracks[tracknum];
    AVPacket pkt = { .stream_index = tracknum, .flags = AV_PKT_FLAG_KEY };
    int i, len;

    track->mode = mov->mode;
    track->tag = MKTAG('t','e','x','t');
    track->timescale = MOV_TIMESCALE;
    track->par = avcodec_parameters_alloc();
    if (!track->par)
        return AVERROR(ENOMEM);
    track->par->codec_type = AVMEDIA_TYPE_SUBTITLE;
#if 0
    // These properties are required to make QT recognize the chapter track
    uint8_t chapter_properties[43] = { 0, 0, 0, 0, 0, 0, 0, 1, };
    if (ff_alloc_extradata(track->par, sizeof(chapter_properties)))
        return AVERROR(ENOMEM);
    memcpy(track->par->extradata, chapter_properties, sizeof(chapter_properties));
#else
    if (avio_open_dyn_buf(&pb) >= 0) {
        int size;
        uint8_t *buf;

        /* Stub header (usually for Quicktime chapter track) */
        // TextSampleEntry
        avio_wb32(pb, 0x01); // displayFlags
        avio_w8(pb, 0x00);   // horizontal justification
        avio_w8(pb, 0x00);   // vertical justification
        avio_w8(pb, 0x00);   // bgColourRed
        avio_w8(pb, 0x00);   // bgColourGreen
        avio_w8(pb, 0x00);   // bgColourBlue
        avio_w8(pb, 0x00);   // bgColourAlpha
        // BoxRecord
        avio_wb16(pb, 0x00); // defTextBoxTop
        avio_wb16(pb, 0x00); // defTextBoxLeft
        avio_wb16(pb, 0x00); // defTextBoxBottom
        avio_wb16(pb, 0x00); // defTextBoxRight
        // StyleRecord
        avio_wb16(pb, 0x00); // startChar
        avio_wb16(pb, 0x00); // endChar
        avio_wb16(pb, 0x01); // fontID
        avio_w8(pb, 0x00);   // fontStyleFlags
        avio_w8(pb, 0x00);   // fontSize
        avio_w8(pb, 0x00);   // fgColourRed
        avio_w8(pb, 0x00);   // fgColourGreen
        avio_w8(pb, 0x00);   // fgColourBlue
        avio_w8(pb, 0x00);   // fgColourAlpha
        // FontTableBox
        avio_wb32(pb, 0x0D); // box size
        ffio_wfourcc(pb, "ftab"); // box atom name
        avio_wb16(pb, 0x01); // entry count
        // FontRecord
        avio_wb16(pb, 0x01); // font ID
        avio_w8(pb, 0x00);   // font name length

        if ((size = avio_close_dyn_buf(pb, &buf)) > 0) {
            track->par->extradata = buf;
            track->par->extradata_size = size;
        } else {
            av_freep(&buf);
        }
    }
#endif

    for (i = 0; i < s->nb_chapters; i++) {
        AVChapter *c = s->chapters[i];
        AVDictionaryEntry *t;

        int64_t end = av_rescale_q(c->end, c->time_base, (AVRational){1,MOV_TIMESCALE});
        pkt.pts = pkt.dts = av_rescale_q(c->start, c->time_base, (AVRational){1,MOV_TIMESCALE});
        pkt.duration = end - pkt.dts;

        if ((t = av_dict_get(c->metadata, "title", NULL, 0))) {
            static const char encd[12] = {
                0x00, 0x00, 0x00, 0x0C,
                'e',  'n',  'c',  'd',
                0x00, 0x00, 0x01, 0x00 };
            len      = strlen(t->value);
            pkt.size = len + 2 + 12;
            pkt.data = av_malloc(pkt.size);
            if (!pkt.data)
                return AVERROR(ENOMEM);
            AV_WB16(pkt.data, len);
            memcpy(pkt.data + 2, t->value, len);
            memcpy(pkt.data + len + 2, encd, sizeof(encd));
            ff_mov_write_packet(s, &pkt);
            av_freep(&pkt.data);
        }
    }

    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_hvcc_tag(AVIOContext *pb, MOVTrack *track)
{
    int64_t pos = avio_tell(pb);

    avio_wb32(pb, 0);
    ffio_wfourcc(pb, "hvcC");
    ff_isom_write_hvcc(pb, track->vos_data, track->vos_len, 0);
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_flush_fragment(AVFormatContext *s, int force)
{
    MOVMuxContext *mov = s->priv_data;
    int i, first_track = -1;
    int64_t mdat_size = 0;
    int ret;
    int has_video = 0, starts_with_key = 0, first_video_track = 1;

    if (!(mov->flags & FF_MOV_FLAG_FRAGMENT))
        return 0;

    // Try to fill in the duration of the last packet in each stream
    // from queued packets in the interleave queues. If the flushing
    // of fragments was triggered automatically by an AVPacket, we
    // already have reliable info for the end of that track, but other
    // tracks may need to be filled in.
    for (i = 0; i < s->nb_streams; i++) {
        MOVTrack *track = &mov->tracks[i];
        if (!track->end_reliable) {
            int64_t ts_offset;
            const AVPacket *next = ff_interleaved_peek(s, i, &ts_offset);
            if (next) {
                track->track_duration = next->dts - track->start_dts + ts_offset;
                if (next->pts != AV_NOPTS_VALUE)
                    track->end_pts = next->pts;
                else
                    track->end_pts = next->dts;
                track->end_pts += ts_offset;
            }
        }
    }

    for (i = 0; i < mov->nb_streams; i++) {
        MOVTrack *track = &mov->tracks[i];
        if (track->entry <= 1)
            continue;
        // Sample durations are calculated as the diff of dts values,
        // but for the last sample in a fragment, we don't know the dts
        // of the first sample in the next fragment, so we have to rely
        // on what was set as duration in the AVPacket. Not all callers
        // set this though, so we might want to replace it with an
        // estimate if it currently is zero.
        if (get_cluster_duration(track, track->entry - 1) != 0)
            continue;
        // Use the duration (i.e. dts diff) of the second last sample for
        // the last one. This is a wild guess (and fatal if it turns out
        // to be too long), but probably the best we can do - having a zero
        // duration is bad as well.
        track->track_duration += get_cluster_duration(track, track->entry - 2);
        track->end_pts        += get_cluster_duration(track, track->entry - 2);
        if (!mov->missing_duration_warned) {
            av_log(s, AV_LOG_WARNING,
                   "Estimating the duration of the last packet in a "
                   "fragment, consider setting the duration field in "
                   "AVPacket instead.\n");
            mov->missing_duration_warned = 1;
        }
    }

    if (!mov->moov_written) {
        int64_t pos = avio_tell(s->pb);
        uint8_t *buf;
        int buf_size, moov_size;

        for (i = 0; i < mov->nb_streams; i++)
            if (!mov->tracks[i].entry)
                break;
        /* Don't write the initial moov unless all tracks have data */
        if (i < mov->nb_streams && !force)
            return 0;

        moov_size = get_moov_size(s);
        for (i = 0; i < mov->nb_streams; i++)
            mov->tracks[i].data_offset = pos + moov_size + 8;

        avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_HEADER);
        if (mov->flags & FF_MOV_FLAG_DELAY_MOOV)
            mov_write_identification(s->pb, s);
        if ((ret = mov_write_moov_tag(s->pb, mov, s)) < 0)
            return ret;

        if (mov->flags & FF_MOV_FLAG_DELAY_MOOV) {
            if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)
                mov->reserved_header_pos = avio_tell(s->pb);
            avio_flush(s->pb);
            mov->moov_written = 1;
            return 0;
        }

        buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);
        mov->mdat_buf = NULL;
        avio_wb32(s->pb, buf_size + 8);
        ffio_wfourcc(s->pb, "mdat");
        avio_write(s->pb, buf, buf_size);
        av_free(buf);

        if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)
            mov->reserved_header_pos = avio_tell(s->pb);

        mov->moov_written = 1;
        mov->mdat_size = 0;
        for (i = 0; i < mov->nb_streams; i++) {
            if (mov->tracks[i].entry)
                mov->tracks[i].frag_start += mov->tracks[i].start_dts +
                                             mov->tracks[i].track_duration -
                                             mov->tracks[i].cluster[0].dts;
            mov->tracks[i].entry = 0;
            mov->tracks[i].end_reliable = 0;
        }
        avio_flush(s->pb);
        return 0;
    }

    if (mov->frag_interleave) {
        for (i = 0; i < mov->nb_streams; i++) {
            MOVTrack *track = &mov->tracks[i];
            int ret;
            if ((ret = mov_flush_fragment_interleaving(s, track)) < 0)
                return ret;
        }

        if (!mov->mdat_buf)
            return 0;
        mdat_size = avio_tell(mov->mdat_buf);
    }

    for (i = 0; i < mov->nb_streams; i++) {
        MOVTrack *track = &mov->tracks[i];
        if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF || mov->frag_interleave)
            track->data_offset = 0;
        else
            track->data_offset = mdat_size;
        if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
            has_video = 1;
            if (first_video_track) {
                if (track->entry)
                    starts_with_key = track->cluster[0].flags & MOV_SYNC_SAMPLE;
                first_video_track = 0;
            }
        }
        if (!track->entry)
            continue;
        if (track->mdat_buf)
            mdat_size += avio_tell(track->mdat_buf);
        if (first_track < 0)
            first_track = i;
    }

    if (!mdat_size)
        return 0;

    avio_write_marker(s->pb,
                      av_rescale(mov->tracks[first_track].cluster[0].dts, AV_TIME_BASE, mov->tracks[first_track].timescale),
                      (has_video ? starts_with_key : mov->tracks[first_track].cluster[0].flags & MOV_SYNC_SAMPLE) ? AVIO_DATA_MARKER_SYNC_POINT : AVIO_DATA_MARKER_BOUNDARY_POINT);

    for (i = 0; i < mov->nb_streams; i++) {
        MOVTrack *track = &mov->tracks[i];
        int buf_size, write_moof = 1, moof_tracks = -1;
        uint8_t *buf;
        int64_t duration = 0;

        if (track->entry)
            duration = track->start_dts + track->track_duration -
                       track->cluster[0].dts;
        if (mov->flags & FF_MOV_FLAG_SEPARATE_MOOF) {
            if (!track->mdat_buf)
                continue;
            mdat_size = avio_tell(track->mdat_buf);
            moof_tracks = i;
        } else {
            write_moof = i == first_track;
        }

        if (write_moof) {
            avio_flush(s->pb);

            mov_write_moof_tag(s->pb, mov, moof_tracks, mdat_size);
            mov->fragments++;

            avio_wb32(s->pb, mdat_size + 8);
            ffio_wfourcc(s->pb, "mdat");
        }

        if (track->entry)
            track->frag_start += duration;
        track->entry = 0;
        track->entries_flushed = 0;
        track->end_reliable = 0;
        if (!mov->frag_interleave) {
            if (!track->mdat_buf)
                continue;
            buf_size = avio_close_dyn_buf(track->mdat_buf, &buf);
            track->mdat_buf = NULL;
        } else {
            if (!mov->mdat_buf)
                continue;
            buf_size = avio_close_dyn_buf(mov->mdat_buf, &buf);
            mov->mdat_buf = NULL;
        }

        avio_write(s->pb, buf, buf_size);
        av_free(buf);
    }

    mov->mdat_size = 0;

    avio_flush(s->pb);
    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_gama_tag(AVIOContext *pb, MOVTrack *track, double gamma)
{
    uint32_t gama = 0;
    if (gamma <= 0.0)
    {
        gamma = avpriv_get_gamma_from_trc(track->par->color_trc);
    }
    av_log(pb, AV_LOG_DEBUG, "gamma value %g\n", gamma);

    if (gamma > 1e-6) {
        gama = (uint32_t)lrint((double)(1<<16) * gamma);
        av_log(pb, AV_LOG_DEBUG, "writing gama value %d\n", gama);

        av_assert0(track->mode == MODE_MOV);
        avio_wb32(pb, 12);
        ffio_wfourcc(pb, "gama");
        avio_wb32(pb, gama);
        return 12;
    }
    else {
        av_log(pb, AV_LOG_WARNING, "gamma value unknown, unable to write gama atom\n");
    }
    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_ftyp_tag(AVIOContext *pb, AVFormatContext *s)
{
    MOVMuxContext *mov = s->priv_data;
    int64_t pos = avio_tell(pb);
    int has_h264 = 0, has_video = 0;
    int minor = 0x200;
    int i;

    for (i = 0; i < s->nb_streams; i++) {
        AVStream *st = s->streams[i];
        if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
            has_video = 1;
        if (st->codecpar->codec_id == AV_CODEC_ID_H264)
            has_h264 = 1;
    }

    avio_wb32(pb, 0); /* size */
    ffio_wfourcc(pb, "ftyp");

    if (mov->major_brand && strlen(mov->major_brand) >= 4)
        ffio_wfourcc(pb, mov->major_brand);
    else if (mov->mode == MODE_3GP) {
        ffio_wfourcc(pb, has_h264 ? "3gp6"  : "3gp4");
        minor =     has_h264 ?   0x100 :   0x200;
    } else if (mov->mode & MODE_3G2) {
        ffio_wfourcc(pb, has_h264 ? "3g2b"  : "3g2a");
        minor =     has_h264 ? 0x20000 : 0x10000;
    } else if (mov->mode == MODE_PSP)
        ffio_wfourcc(pb, "MSNV");
    else if (mov->mode == MODE_MP4 && mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)
        ffio_wfourcc(pb, "iso5"); // Required when using default-base-is-moof
    else if (mov->mode == MODE_MP4)
        ffio_wfourcc(pb, "isom");
    else if (mov->mode == MODE_IPOD)
        ffio_wfourcc(pb, has_video ? "M4V ":"M4A ");
    else if (mov->mode == MODE_ISM)
        ffio_wfourcc(pb, "isml");
    else if (mov->mode == MODE_F4V)
        ffio_wfourcc(pb, "f4v ");
    else
        ffio_wfourcc(pb, "qt  ");

    avio_wb32(pb, minor);

    if (mov->mode == MODE_MOV)
        ffio_wfourcc(pb, "qt  ");
    else if (mov->mode == MODE_ISM) {
        ffio_wfourcc(pb, "piff");
    } else if (!(mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)) {
        ffio_wfourcc(pb, "isom");
        ffio_wfourcc(pb, "iso2");
        if (has_h264)
            ffio_wfourcc(pb, "avc1");
    }

    // We add tfdt atoms when fragmenting, signal this with the iso6 compatible
    // brand. This is compatible with users that don't understand tfdt.
    if (mov->flags & FF_MOV_FLAG_FRAGMENT && mov->mode != MODE_ISM)
        ffio_wfourcc(pb, "iso6");

    if (mov->mode == MODE_3GP)
        ffio_wfourcc(pb, has_h264 ? "3gp6":"3gp4");
    else if (mov->mode & MODE_3G2)
        ffio_wfourcc(pb, has_h264 ? "3g2b":"3g2a");
    else if (mov->mode == MODE_PSP)
        ffio_wfourcc(pb, "MSNV");
    else if (mov->mode == MODE_MP4)
        ffio_wfourcc(pb, "mp41");

    if (mov->flags & FF_MOV_FLAG_DASH && mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)
        ffio_wfourcc(pb, "dash");

    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_write_header(AVFormatContext *s)
{
    AVIOContext *pb = s->pb;
    MOVMuxContext *mov = s->priv_data;
    AVDictionaryEntry *t, *global_tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
    int i, ret, hint_track = 0, tmcd_track = 0, nb_tracks = s->nb_streams;

    if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters)
        nb_tracks++;

    if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
        /* Add hint tracks for each audio and video stream */
        hint_track = nb_tracks;
        for (i = 0; i < s->nb_streams; i++) {
            AVStream *st = s->streams[i];
            if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
                st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
                nb_tracks++;
            }
        }
    }

    if (mov->mode == MODE_MOV || mov->mode == MODE_MP4)
        tmcd_track = nb_tracks;

    for (i = 0; i < s->nb_streams; i++) {
        int j;
        AVStream *st= s->streams[i];
        MOVTrack *track= &mov->tracks[i];

        /* copy extradata if it exists */
        if (st->codecpar->extradata_size) {
            if (st->codecpar->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
                mov_create_dvd_sub_decoder_specific_info(track, st);
            else if (!TAG_IS_AVCI(track->tag) && st->codecpar->codec_id != AV_CODEC_ID_DNXHD) {
                track->vos_len  = st->codecpar->extradata_size;
                track->vos_data = av_malloc(track->vos_len);
                if (!track->vos_data) {
                    return AVERROR(ENOMEM);
                }
                memcpy(track->vos_data, st->codecpar->extradata, track->vos_len);
            }
        }

        if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ||
            track->par->channel_layout != AV_CH_LAYOUT_MONO)
            continue;

        for (j = 0; j < s->nb_streams; j++) {
            AVStream *stj= s->streams[j];
            MOVTrack *trackj= &mov->tracks[j];
            if (j == i)
                continue;

            if (stj->codecpar->codec_type != AVMEDIA_TYPE_AUDIO ||
                trackj->par->channel_layout != AV_CH_LAYOUT_MONO ||
                trackj->language != track->language ||
                trackj->tag != track->tag
            )
                continue;
            track->multichannel_as_mono++;
        }
    }

    if (!(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) {
        if ((ret = mov_write_identification(pb, s)) < 0)
            return ret;
    }

    if (mov->reserved_moov_size){
        mov->reserved_header_pos = avio_tell(pb);
        if (mov->reserved_moov_size > 0)
            avio_skip(pb, mov->reserved_moov_size);
    }

    if (mov->flags & FF_MOV_FLAG_FRAGMENT) {
        /* If no fragmentation options have been set, set a default. */
        if (!(mov->flags & (FF_MOV_FLAG_FRAG_KEYFRAME |
                            FF_MOV_FLAG_FRAG_CUSTOM)) &&
            !mov->max_fragment_duration && !mov->max_fragment_size)
            mov->flags |= FF_MOV_FLAG_FRAG_KEYFRAME;
    } else {
        if (mov->flags & FF_MOV_FLAG_FASTSTART)
            mov->reserved_header_pos = avio_tell(pb);
        mov_write_mdat_tag(pb, mov);
    }

    ff_parse_creation_time_metadata(s, &mov->time, 1);
    if (mov->time)
        mov->time += 0x7C25B080; // 1970 based -> 1904 based

    if (mov->chapter_track)
        if ((ret = mov_create_chapter_track(s, mov->chapter_track)) < 0)
            return ret;

    if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
        /* Initialize the hint tracks for each audio and video stream */
        for (i = 0; i < s->nb_streams; i++) {
            AVStream *st = s->streams[i];
            if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
                st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
                if ((ret = ff_mov_init_hinting(s, hint_track, i)) < 0)
                    return ret;
                hint_track++;
            }
        }
    }

    if (mov->nb_meta_tmcd) {
        /* Initialize the tmcd tracks */
        for (i = 0; i < s->nb_streams; i++) {
            AVStream *st = s->streams[i];
            t = global_tcr;

            if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
                AVTimecode tc;
                if (!t)
                    t = av_dict_get(st->metadata, "timecode", NULL, 0);
                if (!t)
                    continue;
                if (mov_check_timecode_track(s, &tc, i, t->value) < 0)
                    continue;
                if ((ret = mov_create_timecode_track(s, tmcd_track, i, tc)) < 0)
                    return ret;
                tmcd_track++;
            }
        }
    }

    avio_flush(pb);

    if (mov->flags & FF_MOV_FLAG_ISML)
        mov_write_isml_manifest(pb, mov, s);

    if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV &&
        !(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) {
        if ((ret = mov_write_moov_tag(pb, mov, s)) < 0)
            return ret;
        avio_flush(pb);
        mov->moov_written = 1;
        if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX)
            mov->reserved_header_pos = avio_tell(pb);
    }

    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_gmhd_tag(AVIOContext *pb, MOVTrack *track)
{
    int64_t pos = avio_tell(pb);
    avio_wb32(pb, 0);      /* size */
    ffio_wfourcc(pb, "gmhd");
    avio_wb32(pb, 0x18);   /* gmin size */
    ffio_wfourcc(pb, "gmin");/* generic media info */
    avio_wb32(pb, 0);      /* version & flags */
    avio_wb16(pb, 0x40);   /* graphics mode = */
    avio_wb16(pb, 0x8000); /* opColor (r?) */
    avio_wb16(pb, 0x8000); /* opColor (g?) */
    avio_wb16(pb, 0x8000); /* opColor (b?) */
    avio_wb16(pb, 0);      /* balance */
    avio_wb16(pb, 0);      /* reserved */

    /*
     * This special text atom is required for
     * Apple Quicktime chapters. The contents
     * don't appear to be documented, so the
     * bytes are copied verbatim.
     */
    if (track->tag != MKTAG('c','6','0','8')) {
    avio_wb32(pb, 0x2C);   /* size */
    ffio_wfourcc(pb, "text");
    avio_wb16(pb, 0x01);
    avio_wb32(pb, 0x00);
    avio_wb32(pb, 0x00);
    avio_wb32(pb, 0x00);
    avio_wb32(pb, 0x01);
    avio_wb32(pb, 0x00);
    avio_wb32(pb, 0x00);
    avio_wb32(pb, 0x00);
    avio_wb32(pb, 0x00004000);
    avio_wb16(pb, 0x0000);
    }

    if (track->par->codec_tag == MKTAG('t','m','c','d')) {
        int64_t tmcd_pos = avio_tell(pb);
        avio_wb32(pb, 0); /* size */
        ffio_wfourcc(pb, "tmcd");
        mov_write_tcmi_tag(pb, track);
        update_size(pb, tmcd_pos);
    }
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_get_rawvideo_codec_tag(AVFormatContext *s, MOVTrack *track)
{
    int tag = track->par->codec_tag;
    int i;
    enum AVPixelFormat pix_fmt;

    for (i = 0; i < FF_ARRAY_ELEMS(mov_pix_fmt_tags); i++) {
        if (track->par->format == mov_pix_fmt_tags[i].pix_fmt) {
            tag = mov_pix_fmt_tags[i].tag;
            track->par->bits_per_coded_sample = mov_pix_fmt_tags[i].bps;
            if (track->par->codec_tag == mov_pix_fmt_tags[i].tag)
                break;
        }
    }

    pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_mov,
                                  track->par->bits_per_coded_sample);
    if (tag == MKTAG('r','a','w',' ') &&
        track->par->format != pix_fmt &&
        track->par->format != AV_PIX_FMT_NONE)
        av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to mov, output file will be unreadable\n",
               av_get_pix_fmt_name(track->par->format));
    return tag;
}

Project: FFmpeg
File: movenc.c

static int mov_write_sidx_tags(AVIOContext *pb, MOVMuxContext *mov,
                               int tracks, int ref_size)
{
    int i, round, ret;
    AVIOContext *avio_buf;
    int total_size = 0;
    for (round = 0; round < 2; round++) {
        // First run one round to calculate the total size of all
        // sidx atoms.
        // This would be much simpler if we'd only write one sidx
        // atom, for the first track in the moof.
        if (round == 0) {
            if ((ret = ffio_open_null_buf(&avio_buf)) < 0)
                return ret;
        } else {
            avio_buf = pb;
        }
        for (i = 0; i < mov->nb_streams; i++) {
            MOVTrack *track = &mov->tracks[i];
            if (tracks >= 0 && i != tracks)
                continue;
            // When writing a sidx for the full file, entry is 0, but
            // we want to include all tracks. ref_size is 0 in this case,
            // since we read it from frag_info instead.
            if (!track->entry && ref_size > 0)
                continue;
            total_size -= mov_write_sidx_tag(avio_buf, track, ref_size,
                                             total_size);
        }
        if (round == 0)
            total_size = ffio_close_null_buf(avio_buf);
    }
    return 0;
}

Project: FFmpeg
File: movenc.c

static int check_pkt(AVFormatContext *s, AVPacket *pkt)
{
    MOVMuxContext *mov = s->priv_data;
    MOVTrack *trk = &mov->tracks[pkt->stream_index];
    int64_t ref;
    uint64_t duration;

    if (trk->entry) {
        ref = trk->cluster[trk->entry - 1].dts;
    } else if (   trk->start_dts != AV_NOPTS_VALUE
               && !trk->frag_discont) {
        ref = trk->start_dts + trk->track_duration;
    } else
        ref = pkt->dts; // Skip tests for the first packet

    duration = pkt->dts - ref;
    if (pkt->dts < ref || duration >= INT_MAX) {
        av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" / timestamp: %"PRId64" is out of range for mov/mp4 format\n",
            duration, pkt->dts
        );

        pkt->dts = ref + 1;
        pkt->pts = AV_NOPTS_VALUE;
    }

    if (pkt->duration < 0 || pkt->duration > INT_MAX) {
        av_log(s, AV_LOG_ERROR, "Application provided duration: %"PRId64" is invalid\n", pkt->duration);
        return AVERROR(EINVAL);
    }
    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_esds_tag(AVIOContext *pb, MOVTrack *track) // Basic
{
    AVCPBProperties *props;
    int64_t pos = avio_tell(pb);
    int decoder_specific_info_len = track->vos_len ? 5 + track->vos_len : 0;
    unsigned avg_bitrate;

    avio_wb32(pb, 0); // size
    ffio_wfourcc(pb, "esds");
    avio_wb32(pb, 0); // Version

    // ES descriptor
    put_descr(pb, 0x03, 3 + 5+13 + decoder_specific_info_len + 5+1);
    avio_wb16(pb, track->track_id);
    avio_w8(pb, 0x00); // flags (= no flags)

    // DecoderConfig descriptor
    put_descr(pb, 0x04, 13 + decoder_specific_info_len);

    // Object type indication
    if ((track->par->codec_id == AV_CODEC_ID_MP2 ||
         track->par->codec_id == AV_CODEC_ID_MP3) &&
        track->par->sample_rate > 24000)
        avio_w8(pb, 0x6B); // 11172-3
    else
        avio_w8(pb, ff_codec_get_tag(ff_mp4_obj_type, track->par->codec_id));

    // the following fields is made of 6 bits to identify the streamtype (4 for video, 5 for audio)
    // plus 1 bit to indicate upstream and 1 bit set to 1 (reserved)
    if (track->par->codec_id == AV_CODEC_ID_DVD_SUBTITLE)
        avio_w8(pb, (0x38 << 2) | 1); // flags (= NeroSubpicStream)
    else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
        avio_w8(pb, 0x15); // flags (= Audiostream)
    else
        avio_w8(pb, 0x11); // flags (= Visualstream)

    props = (AVCPBProperties*)av_stream_get_side_data(track->st, AV_PKT_DATA_CPB_PROPERTIES,
                                                      NULL);

    avio_wb24(pb, props ? props->buffer_size / 8 : 0); // Buffersize DB

    avg_bitrate = compute_avg_bitrate(track);
    avio_wb32(pb, props ? FFMAX3(props->max_bitrate, props->avg_bitrate, avg_bitrate) : FFMAX(track->par->bit_rate, avg_bitrate)); // maxbitrate (FIXME should be max rate in any 1 sec window)
    avio_wb32(pb, avg_bitrate);

    if (track->vos_len) {
        // DecoderSpecific info descriptor
        put_descr(pb, 0x05, track->vos_len);
        avio_write(pb, track->vos_data, track->vos_len);
    }

    // SL descriptor
    put_descr(pb, 0x06, 1);
    avio_w8(pb, 0x02);
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_auto_flush_fragment(AVFormatContext *s, int force)
{
    MOVMuxContext *mov = s->priv_data;
    int had_moov = mov->moov_written;
    int ret = mov_flush_fragment(s, force);
    if (ret < 0)
        return ret;
    // If using delay_moov, the first flush only wrote the moov,
    // not the actual moof+mdat pair, thus flush once again.
    if (!had_moov && mov->flags & FF_MOV_FLAG_DELAY_MOOV)
        ret = mov_flush_fragment(s, force);
    return ret;
}

Project: FFmpeg
File: movenc.c

static int mov_find_codec_tag(AVFormatContext *s, MOVTrack *track)
{
    int tag;

    if (track->mode == MODE_MP4 || track->mode == MODE_PSP)
        tag = mp4_get_codec_tag(s, track);
    else if (track->mode == MODE_ISM) {
        tag = mp4_get_codec_tag(s, track);
        if (!tag && track->par->codec_id == AV_CODEC_ID_WMAPRO)
            tag = MKTAG('w', 'm', 'a', ' ');
    } else if (track->mode == MODE_IPOD)
        tag = ipod_get_codec_tag(s, track);
    else if (track->mode & MODE_3GP)
        tag = ff_codec_get_tag(codec_3gp_tags, track->par->codec_id);
    else if (track->mode == MODE_F4V)
        tag = ff_codec_get_tag(codec_f4v_tags, track->par->codec_id);
    else
        tag = mov_get_codec_tag(s, track);

    return tag;
}

Project: FFmpeg
File: movenc.c

static int mov_write_isml_manifest(AVIOContext *pb, MOVMuxContext *mov, AVFormatContext *s)
{
    int64_t pos = avio_tell(pb);
    int i;
    int64_t manifest_bit_rate = 0;
    AVCPBProperties *props = NULL;

    static const uint8_t uuid[] = {
        0xa5, 0xd4, 0x0b, 0x30, 0xe8, 0x14, 0x11, 0xdd,
        0xba, 0x2f, 0x08, 0x00, 0x20, 0x0c, 0x9a, 0x66
    };

    avio_wb32(pb, 0);
    ffio_wfourcc(pb, "uuid");
    avio_write(pb, uuid, sizeof(uuid));
    avio_wb32(pb, 0);

    avio_printf(pb, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
    avio_printf(pb, "<smil xmlns=\"http://www.w3.org/2001/SMIL20/Language\">\n");
    avio_printf(pb, "<head>\n");
    if (!(mov->fc->flags & AVFMT_FLAG_BITEXACT))
        avio_printf(pb, "<meta name=\"creator\" content=\"%s\" />\n",
                    LIBAVFORMAT_IDENT);
    avio_printf(pb, "</head>\n");
    avio_printf(pb, "<body>\n");
    avio_printf(pb, "<switch>\n");

    mov_setup_track_ids(mov, s);

    for (i = 0; i < mov->nb_streams; i++) {
        MOVTrack *track = &mov->tracks[i];
        const char *type;
        int track_id = track->track_id;

        AVStream *st = track->st;
        AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);

        if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
            type = "video";
        } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
            type = "audio";
        } else {
            continue;
        }

        props = (AVCPBProperties*)av_stream_get_side_data(track->st, AV_PKT_DATA_CPB_PROPERTIES, NULL);

        if (track->par->bit_rate) {
            manifest_bit_rate = track->par->bit_rate;
        } else if (props) {
            manifest_bit_rate = props->max_bitrate;
        }

        avio_printf(pb, "<%s systemBitrate=\"%"PRId64"\">\n", type,
                    manifest_bit_rate);
        param_write_int(pb, "systemBitrate", manifest_bit_rate);
        param_write_int(pb, "trackID", track_id);
        param_write_string(pb, "systemLanguage", lang ? lang->value : "und");
        if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
            if (track->par->codec_id == AV_CODEC_ID_H264) {
                uint8_t *ptr;
                int size = track->par->extradata_size;
                if (!ff_avc_write_annexb_extradata(track->par->extradata, &ptr,
                                                   &size)) {
                    param_write_hex(pb, "CodecPrivateData",
                                    ptr ? ptr : track->par->extradata,
                                    size);
                    av_free(ptr);
                }
                param_write_string(pb, "FourCC", "H264");
            } else if (track->par->codec_id == AV_CODEC_ID_VC1) {
                param_write_string(pb, "FourCC", "WVC1");
                param_write_hex(pb, "CodecPrivateData", track->par->extradata,
                                track->par->extradata_size);
            }
            param_write_int(pb, "MaxWidth", track->par->width);
            param_write_int(pb, "MaxHeight", track->par->height);
            param_write_int(pb, "DisplayWidth", track->par->width);
            param_write_int(pb, "DisplayHeight", track->par->height);
        } else {
            if (track->par->codec_id == AV_CODEC_ID_AAC) {
                switch (track->par->profile)
                {
                    case FF_PROFILE_AAC_HE_V2:
                        param_write_string(pb, "FourCC", "AACP");
                        break;
                    case FF_PROFILE_AAC_HE:
                        param_write_string(pb, "FourCC", "AACH");
                        break;
                    default:
                        param_write_string(pb, "FourCC", "AACL");
                }
            } else if (track->par->codec_id == AV_CODEC_ID_WMAPRO) {
                param_write_string(pb, "FourCC", "WMAP");
            }
            param_write_hex(pb, "CodecPrivateData", track->par->extradata,
                            track->par->extradata_size);
            param_write_int(pb, "AudioTag", ff_codec_get_tag(ff_codec_wav_tags,
                                                             track->par->codec_id));
            param_write_int(pb, "Channels", track->par->channels);
            param_write_int(pb, "SamplingRate", track->par->sample_rate);
            param_write_int(pb, "BitsPerSample", 16);
            param_write_int(pb, "PacketSize", track->par->block_align ?
                                              track->par->block_align : 4);
        }
        avio_printf(pb, "</%s>\n", type);
    }
    avio_printf(pb, "</switch>\n");
    avio_printf(pb, "</body>\n");
    avio_printf(pb, "</smil>\n");

    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int shift_data(AVFormatContext *s)
{
    int ret = 0, moov_size;
    MOVMuxContext *mov = s->priv_data;
    int64_t pos, pos_end = avio_tell(s->pb);
    uint8_t *buf, *read_buf[2];
    int read_buf_id = 0;
    int read_size[2];
    AVIOContext *read_pb;

    if (mov->flags & FF_MOV_FLAG_FRAGMENT)
        moov_size = compute_sidx_size(s);
    else
        moov_size = compute_moov_size(s);
    if (moov_size < 0)
        return moov_size;

    buf = av_malloc(moov_size * 2);
    if (!buf)
        return AVERROR(ENOMEM);
    read_buf[0] = buf;
    read_buf[1] = buf + moov_size;

    /* Shift the data: the AVIO context of the output can only be used for
     * writing, so we re-open the same output, but for reading. It also avoids
     * a read/seek/write/seek back and forth. */
    avio_flush(s->pb);
    ret = s->io_open(s, &read_pb, s->filename, AVIO_FLAG_READ, NULL);
    if (ret < 0) {
        av_log(s, AV_LOG_ERROR, "Unable to re-open %s output file for "
               "the second pass (faststart)\n", s->filename);
        goto end;
    }

    /* mark the end of the shift to up to the last data we wrote, and get ready
     * for writing */
    pos_end = avio_tell(s->pb);
    avio_seek(s->pb, mov->reserved_header_pos + moov_size, SEEK_SET);

    /* start reading at where the new moov will be placed */
    avio_seek(read_pb, mov->reserved_header_pos, SEEK_SET);
    pos = avio_tell(read_pb);

#define READ_BLOCK do {                                                             \
    read_size[read_buf_id] = avio_read(read_pb, read_buf[read_buf_id], moov_size);  \
    read_buf_id ^= 1;                                                               \
} while (0)

    /* shift data by chunk of at most moov_size */
    READ_BLOCK;
    do {
        int n;
        READ_BLOCK;
        n = read_size[read_buf_id];
        if (n <= 0)
            break;
        avio_write(s->pb, read_buf[read_buf_id], n);
        pos += n;
    } while (pos < pos_end);
    ff_format_io_close(s, &read_pb);

end:
    av_free(buf);
    return ret;
}

Project: FFmpeg
File: movenc.c

static int mov_write_stbl_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
{
    int64_t pos = avio_tell(pb);
    int ret;

    avio_wb32(pb, 0); /* size */
    ffio_wfourcc(pb, "stbl");
    mov_write_stsd_tag(s, pb, mov, track);
    mov_write_stts_tag(pb, track);
    if ((track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
         track->par->codec_tag == MKTAG('r','t','p',' ')) &&
        track->has_keyframes && track->has_keyframes < track->entry)
        mov_write_stss_tag(pb, track, MOV_SYNC_SAMPLE);
    if (track->mode == MODE_MOV && track->flags & MOV_TRACK_STPS)
        mov_write_stss_tag(pb, track, MOV_PARTIAL_SYNC_SAMPLE);
    if (track->par->codec_type == AVMEDIA_TYPE_VIDEO &&
        track->flags & MOV_TRACK_CTTS && track->entry) {

        if ((ret = mov_write_ctts_tag(pb, track)) < 0)
            return ret;
    }
    mov_write_stsc_tag(pb, track);
    mov_write_stsz_tag(pb, track);
    mov_write_stco_tag(pb, track);
    if (mov->encryption_scheme == MOV_ENC_CENC_AES_CTR) {
        ff_mov_cenc_write_stbl_atoms(&track->cenc, pb);
    }
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_init(AVFormatContext *s)
{
    MOVMuxContext *mov = s->priv_data;
    AVDictionaryEntry *global_tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
    int i, ret, hint_track = 0, tmcd_track = 0;

    mov->fc = s;

    /* Default mode == MP4 */
    mov->mode = MODE_MP4;

    if (s->oformat) {
        if (!strcmp("3gp", s->oformat->name)) mov->mode = MODE_3GP;
        else if (!strcmp("3g2", s->oformat->name)) mov->mode = MODE_3GP|MODE_3G2;
        else if (!strcmp("mov", s->oformat->name)) mov->mode = MODE_MOV;
        else if (!strcmp("psp", s->oformat->name)) mov->mode = MODE_PSP;
        else if (!strcmp("ipod",s->oformat->name)) mov->mode = MODE_IPOD;
        else if (!strcmp("ismv",s->oformat->name)) mov->mode = MODE_ISM;
        else if (!strcmp("f4v", s->oformat->name)) mov->mode = MODE_F4V;
    }

    if (mov->flags & FF_MOV_FLAG_DELAY_MOOV)
        mov->flags |= FF_MOV_FLAG_EMPTY_MOOV;

    /* Set the FRAGMENT flag if any of the fragmentation methods are
     * enabled. */
    if (mov->max_fragment_duration || mov->max_fragment_size ||
        mov->flags & (FF_MOV_FLAG_EMPTY_MOOV |
                      FF_MOV_FLAG_FRAG_KEYFRAME |
                      FF_MOV_FLAG_FRAG_CUSTOM))
        mov->flags |= FF_MOV_FLAG_FRAGMENT;

    /* Set other implicit flags immediately */
    if (mov->mode == MODE_ISM)
        mov->flags |= FF_MOV_FLAG_EMPTY_MOOV | FF_MOV_FLAG_SEPARATE_MOOF |
                      FF_MOV_FLAG_FRAGMENT;
    if (mov->flags & FF_MOV_FLAG_DASH)
        mov->flags |= FF_MOV_FLAG_FRAGMENT | FF_MOV_FLAG_EMPTY_MOOV |
                      FF_MOV_FLAG_DEFAULT_BASE_MOOF;

    if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV && s->flags & AVFMT_FLAG_AUTO_BSF) {
        av_log(s, AV_LOG_VERBOSE, "Empty MOOV enabled; disabling automatic bitstream filtering\n");
        s->flags &= ~AVFMT_FLAG_AUTO_BSF;
    }

    if (mov->flags & FF_MOV_FLAG_FASTSTART) {
        mov->reserved_moov_size = -1;
    }

    if (mov->use_editlist < 0) {
        mov->use_editlist = 1;
        if (mov->flags & FF_MOV_FLAG_FRAGMENT &&
            !(mov->flags & FF_MOV_FLAG_DELAY_MOOV)) {
            // If we can avoid needing an edit list by shifting the
            // tracks, prefer that over (trying to) write edit lists
            // in fragmented output.
            if (s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO ||
                s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO)
                mov->use_editlist = 0;
        }
    }
    if (mov->flags & FF_MOV_FLAG_EMPTY_MOOV &&
        !(mov->flags & FF_MOV_FLAG_DELAY_MOOV) && mov->use_editlist)
        av_log(s, AV_LOG_WARNING, "No meaningful edit list will be written when using empty_moov without delay_moov\n");

    if (!mov->use_editlist && s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_AUTO)
        s->avoid_negative_ts = AVFMT_AVOID_NEG_TS_MAKE_ZERO;

    /* Clear the omit_tfhd_offset flag if default_base_moof is set;
     * if the latter is set that's enough and omit_tfhd_offset doesn't
     * add anything extra on top of that. */
    if (mov->flags & FF_MOV_FLAG_OMIT_TFHD_OFFSET &&
        mov->flags & FF_MOV_FLAG_DEFAULT_BASE_MOOF)
        mov->flags &= ~FF_MOV_FLAG_OMIT_TFHD_OFFSET;

    if (mov->frag_interleave &&
        mov->flags & (FF_MOV_FLAG_OMIT_TFHD_OFFSET | FF_MOV_FLAG_SEPARATE_MOOF)) {
        av_log(s, AV_LOG_ERROR,
               "Sample interleaving in fragments is mutually exclusive with "
               "omit_tfhd_offset and separate_moof\n");
        return AVERROR(EINVAL);
    }

    /* Non-seekable output is ok if using fragmentation. If ism_lookahead
     * is enabled, we don't support non-seekable output at all. */
    if (!s->pb->seekable &&
        (!(mov->flags & FF_MOV_FLAG_FRAGMENT) || mov->ism_lookahead)) {
        av_log(s, AV_LOG_ERROR, "muxer does not support non seekable output\n");
        return AVERROR(EINVAL);
    }

    mov->nb_streams = s->nb_streams;
    if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters)
        mov->chapter_track = mov->nb_streams++;

    if (mov->flags & FF_MOV_FLAG_RTP_HINT) {
        /* Add hint tracks for each audio and video stream */
        hint_track = mov->nb_streams;
        for (i = 0; i < s->nb_streams; i++) {
            AVStream *st = s->streams[i];
            if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO ||
                st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
                mov->nb_streams++;
            }
        }
    }

    if (   mov->write_tmcd == -1 && (mov->mode == MODE_MOV || mov->mode == MODE_MP4)
        || mov->write_tmcd == 1) {
        tmcd_track = mov->nb_streams;

        /* +1 tmcd track for each video stream with a timecode */
        for (i = 0; i < s->nb_streams; i++) {
            AVStream *st = s->streams[i];
            AVDictionaryEntry *t = global_tcr;
            if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
                (t || (t=av_dict_get(st->metadata, "timecode", NULL, 0)))) {
                AVTimecode tc;
                ret = mov_check_timecode_track(s, &tc, i, t->value);
                if (ret >= 0)
                    mov->nb_meta_tmcd++;
            }
        }

        /* check if there is already a tmcd track to remux */
        if (mov->nb_meta_tmcd) {
            for (i = 0; i < s->nb_streams; i++) {
                AVStream *st = s->streams[i];
                if (st->codecpar->codec_tag == MKTAG('t','m','c','d')) {
                    av_log(s, AV_LOG_WARNING, "You requested a copy of the original timecode track "
                           "so timecode metadata are now ignored\n");
                    mov->nb_meta_tmcd = 0;
                }
            }
        }

        mov->nb_streams += mov->nb_meta_tmcd;
    }

    // Reserve an extra stream for chapters for the case where chapters
    // are written in the trailer
    mov->tracks = av_mallocz_array((mov->nb_streams + 1), sizeof(*mov->tracks));
    if (!mov->tracks)
        return AVERROR(ENOMEM);

    if (mov->encryption_scheme_str != NULL && strcmp(mov->encryption_scheme_str, "none") != 0) {
        if (strcmp(mov->encryption_scheme_str, "cenc-aes-ctr") == 0) {
            mov->encryption_scheme = MOV_ENC_CENC_AES_CTR;

            if (mov->encryption_key_len != AES_CTR_KEY_SIZE) {
                av_log(s, AV_LOG_ERROR, "Invalid encryption key len %d expected %d\n",
                    mov->encryption_key_len, AES_CTR_KEY_SIZE);
                return AVERROR(EINVAL);
            }

            if (mov->encryption_kid_len != CENC_KID_SIZE) {
                av_log(s, AV_LOG_ERROR, "Invalid encryption kid len %d expected %d\n",
                    mov->encryption_kid_len, CENC_KID_SIZE);
                return AVERROR(EINVAL);
            }
        } else {
            av_log(s, AV_LOG_ERROR, "unsupported encryption scheme %s\n",
                mov->encryption_scheme_str);
            return AVERROR(EINVAL);
        }
    }

    for (i = 0; i < s->nb_streams; i++) {
        AVStream *st= s->streams[i];
        MOVTrack *track= &mov->tracks[i];
        AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL,0);

        track->st  = st;
        track->par = st->codecpar;
        track->language = ff_mov_iso639_to_lang(lang?lang->value:"und", mov->mode!=MODE_MOV);
        if (track->language < 0)
            track->language = 0;
        track->mode = mov->mode;
        track->tag  = mov_find_codec_tag(s, track);
        if (!track->tag) {
            av_log(s, AV_LOG_ERROR, "Could not find tag for codec %s in stream #%d, "
                   "codec not currently supported in container\n",
                   avcodec_get_name(st->codecpar->codec_id), i);
            return AVERROR(EINVAL);
        }
        /* If hinting of this track is enabled by a later hint track,
         * this is updated. */
        track->hint_track = -1;
        track->start_dts  = AV_NOPTS_VALUE;
        track->start_cts  = AV_NOPTS_VALUE;
        track->end_pts    = AV_NOPTS_VALUE;
        if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
            if (track->tag == MKTAG('m','x','3','p') || track->tag == MKTAG('m','x','3','n') ||
                track->tag == MKTAG('m','x','4','p') || track->tag == MKTAG('m','x','4','n') ||
                track->tag == MKTAG('m','x','5','p') || track->tag == MKTAG('m','x','5','n')) {
                if (st->codecpar->width != 720 || (st->codecpar->height != 608 && st->codecpar->height != 512)) {
                    av_log(s, AV_LOG_ERROR, "D-10/IMX must use 720x608 or 720x512 video resolution\n");
                    return AVERROR(EINVAL);
                }
                track->height = track->tag >> 24 == 'n' ? 486 : 576;
            }
            if (mov->video_track_timescale) {
                track->timescale = mov->video_track_timescale;
            } else {
                track->timescale = st->time_base.den;
                while(track->timescale < 10000)
                    track->timescale *= 2;
            }
            if (st->codecpar->width > 65535 || st->codecpar->height > 65535) {
                av_log(s, AV_LOG_ERROR, "Resolution %dx%d too large for mov/mp4\n", st->codecpar->width, st->codecpar->height);
                return AVERROR(EINVAL);
            }
            if (track->mode == MODE_MOV && track->timescale > 100000)
                av_log(s, AV_LOG_WARNING,
                       "WARNING codec timebase is very high. If duration is too long,\n"
                       "file may not be playable by quicktime. Specify a shorter timebase\n"
                       "or choose different container.\n");
            if (track->mode == MODE_MOV &&
                track->par->codec_id == AV_CODEC_ID_RAWVIDEO &&
                track->tag == MKTAG('r','a','w',' ')) {
                enum AVPixelFormat pix_fmt = track->par->format;
                if (pix_fmt == AV_PIX_FMT_NONE && track->par->bits_per_coded_sample == 1)
                    pix_fmt = AV_PIX_FMT_MONOWHITE;
                track->is_unaligned_qt_rgb =
                        pix_fmt == AV_PIX_FMT_RGB24 ||
                        pix_fmt == AV_PIX_FMT_BGR24 ||
                        pix_fmt == AV_PIX_FMT_PAL8 ||
                        pix_fmt == AV_PIX_FMT_GRAY8 ||
                        pix_fmt == AV_PIX_FMT_MONOWHITE ||
                        pix_fmt == AV_PIX_FMT_MONOBLACK;
            }
            if (track->mode == MODE_MP4 &&
                track->par->codec_id == AV_CODEC_ID_VP9) {
                if (s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
                    av_log(s, AV_LOG_ERROR,
                           "VP9 in MP4 support is experimental, add "
                           "'-strict %d' if you want to use it.\n",
                           FF_COMPLIANCE_EXPERIMENTAL);
                    return AVERROR_EXPERIMENTAL;
                }
            }
        } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
            track->timescale = st->codecpar->sample_rate;
            if (!st->codecpar->frame_size && !av_get_bits_per_sample(st->codecpar->codec_id)) {
                av_log(s, AV_LOG_WARNING, "track %d: codec frame size is not set\n", i);
                track->audio_vbr = 1;
            }else if (st->codecpar->codec_id == AV_CODEC_ID_ADPCM_MS ||
                     st->codecpar->codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ||
                     st->codecpar->codec_id == AV_CODEC_ID_ILBC){
                if (!st->codecpar->block_align) {
                    av_log(s, AV_LOG_ERROR, "track %d: codec block align is not set for adpcm\n", i);
                    return AVERROR(EINVAL);
                }
                track->sample_size = st->codecpar->block_align;
            }else if (st->codecpar->frame_size > 1){ /* assume compressed audio */
                track->audio_vbr = 1;
            }else{
                track->sample_size = (av_get_bits_per_sample(st->codecpar->codec_id) >> 3) * st->codecpar->channels;
            }
            if (st->codecpar->codec_id == AV_CODEC_ID_ILBC ||
                st->codecpar->codec_id == AV_CODEC_ID_ADPCM_IMA_QT) {
                track->audio_vbr = 1;
            }
            if (track->mode != MODE_MOV &&
                track->par->codec_id == AV_CODEC_ID_MP3 && track->timescale < 16000) {
                if (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL) {
                    av_log(s, AV_LOG_ERROR, "track %d: muxing mp3 at %dhz is not standard, to mux anyway set strict to -1\n",
                        i, track->par->sample_rate);
                    return AVERROR(EINVAL);
                } else {
                    av_log(s, AV_LOG_WARNING, "track %d: muxing mp3 at %dhz is not standard in MP4\n",
                           i, track->par->sample_rate);
                }
            }
        } else if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
            track->timescale = st->time_base.den;
        } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
            track->timescale = st->time_base.den;
        } else {
            track->timescale = MOV_TIMESCALE;
        }
        if (!track->height)
            track->height = st->codecpar->height;
        /* The ism specific timescale isn't mandatory, but is assumed by
         * some tools, such as mp4split. */
        if (mov->mode == MODE_ISM)
            track->timescale = 10000000;

        avpriv_set_pts_info(st, 64, 1, track->timescale);

        if (mov->encryption_scheme == MOV_ENC_CENC_AES_CTR) {
            ret = ff_mov_cenc_init(&track->cenc, mov->encryption_key,
                track->par->codec_id == AV_CODEC_ID_H264, s->flags & AVFMT_FLAG_BITEXACT);
            if (ret)
                return ret;
        }
    }

    enable_tracks(s);
    return 0;
}

Project: FFmpeg
File: movenc.c

static void find_compressor(char * compressor_name, int len, MOVTrack *track)
{
    AVDictionaryEntry *encoder;
    int xdcam_res =  (track->par->width == 1280 && track->par->height == 720)
                  || (track->par->width == 1440 && track->par->height == 1080)
                  || (track->par->width == 1920 && track->par->height == 1080);

    if (track->mode == MODE_MOV &&
        (encoder = av_dict_get(track->st->metadata, "encoder", NULL, 0))) {
        av_strlcpy(compressor_name, encoder->value, 32);
    } else if (track->par->codec_id == AV_CODEC_ID_MPEG2VIDEO && xdcam_res) {
        int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
        AVStream *st = track->st;
        int rate = av_q2d(find_fps(NULL, st));
        av_strlcatf(compressor_name, len, "XDCAM");
        if (track->par->format == AV_PIX_FMT_YUV422P) {
            av_strlcatf(compressor_name, len, " HD422");
        } else if(track->par->width == 1440) {
            av_strlcatf(compressor_name, len, " HD");
        } else
            av_strlcatf(compressor_name, len, " EX");

        av_strlcatf(compressor_name, len, " %d%c", track->par->height, interlaced ? 'i' : 'p');

        av_strlcatf(compressor_name, len, "%d", rate * (interlaced + 1));
    }
}

Project: FFmpeg
File: movenc.c

static int mov_write_ctts_tag(AVIOContext *pb, MOVTrack *track)
{
    MOVStts *ctts_entries;
    uint32_t entries = 0;
    uint32_t atom_size;
    int i;

    ctts_entries = av_malloc_array((track->entry + 1), sizeof(*ctts_entries)); /* worst case */
    if (!ctts_entries)
        return AVERROR(ENOMEM);
    ctts_entries[0].count = 1;
    ctts_entries[0].duration = track->cluster[0].cts;
    for (i = 1; i < track->entry; i++) {
        if (track->cluster[i].cts == ctts_entries[entries].duration) {
            ctts_entries[entries].count++; /* compress */
        } else {
            entries++;
            ctts_entries[entries].duration = track->cluster[i].cts;
            ctts_entries[entries].count = 1;
        }
    }
    entries++; /* last one */
    atom_size = 16 + (entries * 8);
    avio_wb32(pb, atom_size); /* size */
    ffio_wfourcc(pb, "ctts");
    avio_wb32(pb, 0); /* version & flags */
    avio_wb32(pb, entries); /* entry count */
    for (i = 0; i < entries; i++) {
        avio_wb32(pb, ctts_entries[i].count);
        avio_wb32(pb, ctts_entries[i].duration);
    }
    av_free(ctts_entries);
    return atom_size;
}

Project: FFmpeg
File: movenc.c

static int mov_write_tkhd_tag(AVIOContext *pb, MOVMuxContext *mov,
                              MOVTrack *track, AVStream *st)
{
    int64_t duration = av_rescale_rnd(track->track_duration, MOV_TIMESCALE,
                                      track->timescale, AV_ROUND_UP);
    int version = duration < INT32_MAX ? 0 : 1;
    int flags   = MOV_TKHD_FLAG_IN_MOVIE;
    int rotation = 0;
    int group   = 0;

    uint32_t *display_matrix = NULL;
    int      display_matrix_size, i;

    if (st) {
        if (mov->per_stream_grouping)
            group = st->index;
        else
            group = st->codecpar->codec_type;

        display_matrix = (uint32_t*)av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX,
                                                            &display_matrix_size);
        if (display_matrix && display_matrix_size < 9 * sizeof(*display_matrix))
            display_matrix = NULL;
    }

    if (track->flags & MOV_TRACK_ENABLED)
        flags |= MOV_TKHD_FLAG_ENABLED;

    if (track->mode == MODE_ISM)
        version = 1;

    (version == 1) ? avio_wb32(pb, 104) : avio_wb32(pb, 92); /* size */
    ffio_wfourcc(pb, "tkhd");
    avio_w8(pb, version);
    avio_wb24(pb, flags);
    if (version == 1) {
        avio_wb64(pb, track->time);
        avio_wb64(pb, track->time);
    } else {
        avio_wb32(pb, track->time); /* creation time */
        avio_wb32(pb, track->time); /* modification time */
    }
    avio_wb32(pb, track->track_id); /* track-id */
    avio_wb32(pb, 0); /* reserved */
    if (!track->entry && mov->mode == MODE_ISM)
        (version == 1) ? avio_wb64(pb, UINT64_C(0xffffffffffffffff)) : avio_wb32(pb, 0xffffffff);
    else if (!track->entry)
        (version == 1) ? avio_wb64(pb, 0) : avio_wb32(pb, 0);
    else
        (version == 1) ? avio_wb64(pb, duration) : avio_wb32(pb, duration);

    avio_wb32(pb, 0); /* reserved */
    avio_wb32(pb, 0); /* reserved */
    avio_wb16(pb, 0); /* layer */
    avio_wb16(pb, group); /* alternate group) */
    /* Volume, only for audio */
    if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
        avio_wb16(pb, 0x0100);
    else
        avio_wb16(pb, 0);
    avio_wb16(pb, 0); /* reserved */

    /* Matrix structure */
    if (st && st->metadata) {
        AVDictionaryEntry *rot = av_dict_get(st->metadata, "rotate", NULL, 0);
        rotation = (rot && rot->value) ? atoi(rot->value) : 0;
    }
    if (display_matrix) {
        for (i = 0; i < 9; i++)
            avio_wb32(pb, display_matrix[i]);
    } else if (rotation == 90) {
        write_matrix(pb,  0,  1, -1,  0, track->par->height, 0);
    } else if (rotation == 180) {
        write_matrix(pb, -1,  0,  0, -1, track->par->width, track->par->height);
    } else if (rotation == 270) {
        write_matrix(pb,  0, -1,  1,  0, 0, track->par->width);
    } else {
        write_matrix(pb,  1,  0,  0,  1, 0, 0);
    }
    /* Track width and height, for visual only */
    if (st && (track->par->codec_type == AVMEDIA_TYPE_VIDEO ||
               track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)) {
        int64_t track_width_1616;
        if (track->mode == MODE_MOV) {
            track_width_1616 = track->par->width * 0x10000ULL;
        } else {
            track_width_1616 = av_rescale(st->sample_aspect_ratio.num,
                                                  track->par->width * 0x10000LL,
                                                  st->sample_aspect_ratio.den);
            if (!track_width_1616 ||
                track->height != track->par->height ||
                track_width_1616 > UINT32_MAX)
                track_width_1616 = track->par->width * 0x10000ULL;
        }
        if (track_width_1616 > UINT32_MAX) {
            av_log(mov->fc, AV_LOG_WARNING, "track width is too large\n");
            track_width_1616 = 0;
        }
        avio_wb32(pb, track_width_1616);
        if (track->height > 0xFFFF) {
            av_log(mov->fc, AV_LOG_WARNING, "track height is too large\n");
            avio_wb32(pb, 0);
        } else
            avio_wb32(pb, track->height * 0x10000U);
    } else {
        avio_wb32(pb, 0);
        avio_wb32(pb, 0);
    }
    return 0x5c;
}

Project: FFmpeg
File: movenc.c

static int mov_get_mpeg2_xdcam_codec_tag(AVFormatContext *s, MOVTrack *track)
{
    int tag = track->par->codec_tag;
    int interlaced = track->par->field_order > AV_FIELD_PROGRESSIVE;
    AVStream *st = track->st;
    int rate = av_q2d(find_fps(s, st));

    if (!tag)
        tag = MKTAG('m', '2', 'v', '1'); //fallback tag

    if (track->par->format == AV_PIX_FMT_YUV420P) {
        if (track->par->width == 1280 && track->par->height == 720) {
            if (!interlaced) {
                if      (rate == 24) tag = MKTAG('x','d','v','4');
                else if (rate == 25) tag = MKTAG('x','d','v','5');
                else if (rate == 30) tag = MKTAG('x','d','v','1');
                else if (rate == 50) tag = MKTAG('x','d','v','a');
                else if (rate == 60) tag = MKTAG('x','d','v','9');
            }
        } else if (track->par->width == 1440 && track->par->height == 1080) {
            if (!interlaced) {
                if      (rate == 24) tag = MKTAG('x','d','v','6');
                else if (rate == 25) tag = MKTAG('x','d','v','7');
                else if (rate == 30) tag = MKTAG('x','d','v','8');
            } else {
                if      (rate == 25) tag = MKTAG('x','d','v','3');
                else if (rate == 30) tag = MKTAG('x','d','v','2');
            }
        } else if (track->par->width == 1920 && track->par->height == 1080) {
            if (!interlaced) {
                if      (rate == 24) tag = MKTAG('x','d','v','d');
                else if (rate == 25) tag = MKTAG('x','d','v','e');
                else if (rate == 30) tag = MKTAG('x','d','v','f');
            } else {
                if      (rate == 25) tag = MKTAG('x','d','v','c');
                else if (rate == 30) tag = MKTAG('x','d','v','b');
            }
        }
    } else if (track->par->format == AV_PIX_FMT_YUV422P) {
        if (track->par->width == 1280 && track->par->height == 720) {
            if (!interlaced) {
                if      (rate == 24) tag = MKTAG('x','d','5','4');
                else if (rate == 25) tag = MKTAG('x','d','5','5');
                else if (rate == 30) tag = MKTAG('x','d','5','1');
                else if (rate == 50) tag = MKTAG('x','d','5','a');
                else if (rate == 60) tag = MKTAG('x','d','5','9');
            }
        } else if (track->par->width == 1920 && track->par->height == 1080) {
            if (!interlaced) {
                if      (rate == 24) tag = MKTAG('x','d','5','d');
                else if (rate == 25) tag = MKTAG('x','d','5','e');
                else if (rate == 30) tag = MKTAG('x','d','5','f');
            } else {
                if      (rate == 25) tag = MKTAG('x','d','5','c');
                else if (rate == 30) tag = MKTAG('x','d','5','b');
            }
        }
    }

    return tag;
}

Project: FFmpeg
File: movenc.c

static int mov_write_single_packet(AVFormatContext *s, AVPacket *pkt)
{
        MOVMuxContext *mov = s->priv_data;
        MOVTrack *trk = &mov->tracks[pkt->stream_index];
        AVCodecParameters *par = trk->par;
        int64_t frag_duration = 0;
        int size = pkt->size;

        int ret = check_pkt(s, pkt);
        if (ret < 0)
            return ret;

        if (mov->flags & FF_MOV_FLAG_FRAG_DISCONT) {
            int i;
            for (i = 0; i < s->nb_streams; i++)
                mov->tracks[i].frag_discont = 1;
            mov->flags &= ~FF_MOV_FLAG_FRAG_DISCONT;
        }

        if (!pkt->size) {
            if (trk->start_dts == AV_NOPTS_VALUE && trk->frag_discont) {
                trk->start_dts = pkt->dts;
                if (pkt->pts != AV_NOPTS_VALUE)
                    trk->start_cts = pkt->pts - pkt->dts;
                else
                    trk->start_cts = 0;
            }

            if (trk->par->codec_id == AV_CODEC_ID_MP4ALS) {
                int side_size = 0;
                uint8_t *side = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &side_size);
                if (side && side_size > 0 && (side_size != par->extradata_size || memcmp(side, par->extradata, side_size))) {
                    void *newextra = av_mallocz(side_size + AV_INPUT_BUFFER_PADDING_SIZE);
                    if (!newextra)
                        return AVERROR(ENOMEM);
                    av_free(par->extradata);
                    par->extradata = newextra;
                    memcpy(par->extradata, side, side_size);
                    par->extradata_size = side_size;
                    mov->need_rewrite_extradata = 1;
                }
            }

            return 0;             /* Discard 0 sized packets */
        }

        if (trk->entry && pkt->stream_index < s->nb_streams)
            frag_duration = av_rescale_q(pkt->dts - trk->cluster[0].dts,
                                         s->streams[pkt->stream_index]->time_base,
                                         AV_TIME_BASE_Q);
        if ((mov->max_fragment_duration &&
             frag_duration >= mov->max_fragment_duration) ||
             (mov->max_fragment_size && mov->mdat_size + size >= mov->max_fragment_size) ||
             (mov->flags & FF_MOV_FLAG_FRAG_KEYFRAME &&
              par->codec_type == AVMEDIA_TYPE_VIDEO &&
              trk->entry && pkt->flags & AV_PKT_FLAG_KEY)) {
            if (frag_duration >= mov->min_fragment_duration) {
                // Set the duration of this track to line up with the next
                // sample in this track. This avoids relying on AVPacket
                // duration, but only helps for this particular track, not
                // for the other ones that are flushed at the same time.
                trk->track_duration = pkt->dts - trk->start_dts;
                if (pkt->pts != AV_NOPTS_VALUE)
                    trk->end_pts = pkt->pts;
                else
                    trk->end_pts = pkt->dts;
                trk->end_reliable = 1;
                mov_auto_flush_fragment(s, 0);
            }
        }

        return ff_mov_write_packet(s, pkt);
}

Project: FFmpeg
File: movenc.c

static int mov_write_track_udta_tag(AVIOContext *pb, MOVMuxContext *mov,
                                    AVStream *st)
{
    AVIOContext *pb_buf;
    int ret, size;
    uint8_t *buf;

    if (!st)
        return 0;

    ret = avio_open_dyn_buf(&pb_buf);
    if (ret < 0)
        return ret;

    if (mov->mode & MODE_MP4)
        mov_write_track_metadata(pb_buf, st, "name", "title");

    if ((size = avio_close_dyn_buf(pb_buf, &buf)) > 0) {
        avio_wb32(pb, size + 8);
        ffio_wfourcc(pb, "udta");
        avio_write(pb, buf, size);
    }
    av_free(buf);

    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_sidx_tag(AVIOContext *pb,
                              MOVTrack *track, int ref_size, int total_sidx_size)
{
    int64_t pos = avio_tell(pb), offset_pos, end_pos;
    int64_t presentation_time, duration, offset;
    int starts_with_SAP, i, entries;

    if (track->entry) {
        entries = 1;
        presentation_time = track->start_dts + track->frag_start +
                            track->cluster[0].cts;
        duration = track->end_pts -
                   (track->cluster[0].dts + track->cluster[0].cts);
        starts_with_SAP = track->cluster[0].flags & MOV_SYNC_SAMPLE;

        // pts<0 should be cut away using edts
        if (presentation_time < 0) {
            duration += presentation_time;
            presentation_time = 0;
        }
    } else {
        entries = track->nb_frag_info;
        if (entries <= 0)
            return 0;
        presentation_time = track->frag_info[0].time;
    }

    avio_wb32(pb, 0); /* size */
    ffio_wfourcc(pb, "sidx");
    avio_w8(pb, 1); /* version */
    avio_wb24(pb, 0);
    avio_wb32(pb, track->track_id); /* reference_ID */
    avio_wb32(pb, track->timescale); /* timescale */
    avio_wb64(pb, presentation_time); /* earliest_presentation_time */
    offset_pos = avio_tell(pb);
    avio_wb64(pb, 0); /* first_offset (offset to referenced moof) */
    avio_wb16(pb, 0); /* reserved */

    avio_wb16(pb, entries); /* reference_count */
    for (i = 0; i < entries; i++) {
        if (!track->entry) {
            if (i > 1 && track->frag_info[i].offset != track->frag_info[i - 1].offset + track->frag_info[i - 1].size) {
               av_log(NULL, AV_LOG_ERROR, "Non-consecutive fragments, writing incorrect sidx\n");
            }
            duration = track->frag_info[i].duration;
            ref_size = track->frag_info[i].size;
            starts_with_SAP = 1;
        }
        avio_wb32(pb, (0 << 31) | (ref_size & 0x7fffffff)); /* reference_type (0 = media) | referenced_size */
        avio_wb32(pb, duration); /* subsegment_duration */
        avio_wb32(pb, (starts_with_SAP << 31) | (0 << 28) | 0); /* starts_with_SAP | SAP_type | SAP_delta_time */
    }

    end_pos = avio_tell(pb);
    offset = pos + total_sidx_size - end_pos;
    avio_seek(pb, offset_pos, SEEK_SET);
    avio_wb64(pb, offset);
    avio_seek(pb, end_pos, SEEK_SET);
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int ascii_to_wc(AVIOContext *pb, const uint8_t *b)
{
    int val;
    while (*b) {
        GET_UTF8(val, *b++, return -1;)
        avio_wb16(pb, val);
    }
    avio_wb16(pb, 0x00);
    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_dref_tag(AVIOContext *pb)
{
    avio_wb32(pb, 28); /* size */
    ffio_wfourcc(pb, "dref");
    avio_wb32(pb, 0); /* version & flags */
    avio_wb32(pb, 1); /* entry count */

    avio_wb32(pb, 0xc); /* size */
    //FIXME add the alis and rsrc atom
    ffio_wfourcc(pb, "url ");
    avio_wb32(pb, 1); /* version & flags */

    return 28;
}

Project: FFmpeg
File: movenc.c

static int ipod_get_codec_tag(AVFormatContext *s, MOVTrack *track)
{
    int tag = track->par->codec_tag;

    // keep original tag for subs, ipod supports both formats
    if (!(track->par->codec_type == AVMEDIA_TYPE_SUBTITLE &&
          (tag == MKTAG('t', 'x', '3', 'g') ||
           tag == MKTAG('t', 'e', 'x', 't'))))
        tag = ff_codec_get_tag(codec_ipod_tags, track->par->codec_id);

    if (!av_match_ext(s->filename, "m4a") &&
        !av_match_ext(s->filename, "m4b") &&
        !av_match_ext(s->filename, "m4v"))
        av_log(s, AV_LOG_WARNING, "Warning, extension is not .m4a, .m4v nor  .m4b "
               "Quicktime/Ipod might not play the file\n");

    return tag;
}

Project: FFmpeg
File: movenc.c

static int mov_write_uuidusmt_tag(AVIOContext *pb, AVFormatContext *s)
{
    AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 0);
    int64_t pos, pos2;

    if (title) {
        pos = avio_tell(pb);
        avio_wb32(pb, 0); /* size placeholder*/
        ffio_wfourcc(pb, "uuid");
        ffio_wfourcc(pb, "USMT");
        avio_wb32(pb, 0x21d24fce); /* 96 bit UUID */
        avio_wb32(pb, 0xbb88695c);
        avio_wb32(pb, 0xfac9c740);

        pos2 = avio_tell(pb);
        avio_wb32(pb, 0); /* size placeholder*/
        ffio_wfourcc(pb, "MTDT");
        avio_wb16(pb, 4);

        // ?
        avio_wb16(pb, 0x0C);                 /* size */
        avio_wb32(pb, 0x0B);                 /* type */
        avio_wb16(pb, language_code("und")); /* language */
        avio_wb16(pb, 0x0);                  /* ? */
        avio_wb16(pb, 0x021C);               /* data */

        if (!(s->flags & AVFMT_FLAG_BITEXACT))
            mov_write_psp_udta_tag(pb, LIBAVCODEC_IDENT,      "eng", 0x04);
        mov_write_psp_udta_tag(pb, title->value,          "eng", 0x01);
        mov_write_psp_udta_tag(pb, "2006/04/01 11:11:11", "und", 0x03);

        update_size(pb, pos2);
        return update_size(pb, pos);
    }

    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_identification(AVIOContext *pb, AVFormatContext *s)
{
    MOVMuxContext *mov = s->priv_data;
    int i;

    mov_write_ftyp_tag(pb,s);
    if (mov->mode == MODE_PSP) {
        int video_streams_nb = 0, audio_streams_nb = 0, other_streams_nb = 0;
        for (i = 0; i < s->nb_streams; i++) {
            AVStream *st = s->streams[i];
            if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
                video_streams_nb++;
            else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
                audio_streams_nb++;
            else
                other_streams_nb++;
            }

        if (video_streams_nb != 1 || audio_streams_nb != 1 || other_streams_nb) {
            av_log(s, AV_LOG_ERROR, "PSP mode need one video and one audio stream\n");
            return AVERROR(EINVAL);
        }
        return mov_write_uuidprof_tag(pb, s);
    }
    return 0;
}

Project: FFmpeg
File: movenc.c

static int mov_write_trailer(AVFormatContext *s)
{
    MOVMuxContext *mov = s->priv_data;
    AVIOContext *pb = s->pb;
    int res = 0;
    int i;
    int64_t moov_pos;

    if (mov->need_rewrite_extradata) {
        for (i = 0; i < s->nb_streams; i++) {
            MOVTrack *track = &mov->tracks[i];
            AVCodecParameters *par = track->par;

            track->vos_len  = par->extradata_size;
            track->vos_data = av_malloc(track->vos_len);
            if (!track->vos_data)
                return AVERROR(ENOMEM);
            memcpy(track->vos_data, par->extradata, track->vos_len);
        }
        mov->need_rewrite_extradata = 0;
    }

    /*
     * Before actually writing the trailer, make sure that there are no
     * dangling subtitles, that need a terminating sample.
     */
    for (i = 0; i < mov->nb_streams; i++) {
        MOVTrack *trk = &mov->tracks[i];
        if (trk->par->codec_id == AV_CODEC_ID_MOV_TEXT &&
            !trk->last_sample_is_subtitle_end) {
            mov_write_subtitle_end_packet(s, i, trk->track_duration);
            trk->last_sample_is_subtitle_end = 1;
        }
    }

    // If there were no chapters when the header was written, but there
    // are chapters now, write them in the trailer.  This only works
    // when we are not doing fragments.
    if (!mov->chapter_track && !(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
        if (mov->mode & (MODE_MP4|MODE_MOV|MODE_IPOD) && s->nb_chapters) {
            mov->chapter_track = mov->nb_streams++;
            if ((res = mov_create_chapter_track(s, mov->chapter_track)) < 0)
                return res;
        }
    }

    if (!(mov->flags & FF_MOV_FLAG_FRAGMENT)) {
        moov_pos = avio_tell(pb);

        /* Write size of mdat tag */
        if (mov->mdat_size + 8 <= UINT32_MAX) {
            avio_seek(pb, mov->mdat_pos, SEEK_SET);
            avio_wb32(pb, mov->mdat_size + 8);
        } else {
            /* overwrite 'wide' placeholder atom */
            avio_seek(pb, mov->mdat_pos - 8, SEEK_SET);
            /* special value: real atom size will be 64 bit value after
             * tag field */
            avio_wb32(pb, 1);
            ffio_wfourcc(pb, "mdat");
            avio_wb64(pb, mov->mdat_size + 16);
        }
        avio_seek(pb, mov->reserved_moov_size > 0 ? mov->reserved_header_pos : moov_pos, SEEK_SET);

        if (mov->flags & FF_MOV_FLAG_FASTSTART) {
            av_log(s, AV_LOG_INFO, "Starting second pass: moving the moov atom to the beginning of the file\n");
            res = shift_data(s);
            if (res < 0)
                return res;
            avio_seek(pb, mov->reserved_header_pos, SEEK_SET);
            if ((res = mov_write_moov_tag(pb, mov, s)) < 0)
                return res;
        } else if (mov->reserved_moov_size > 0) {
            int64_t size;
            if ((res = mov_write_moov_tag(pb, mov, s)) < 0)
                return res;
            size = mov->reserved_moov_size - (avio_tell(pb) - mov->reserved_header_pos);
            if (size < 8){
                av_log(s, AV_LOG_ERROR, "reserved_moov_size is too small, needed %"PRId64" additional\n", 8-size);
                return AVERROR(EINVAL);
            }
            avio_wb32(pb, size);
            ffio_wfourcc(pb, "free");
            ffio_fill(pb, 0, size - 8);
            avio_seek(pb, moov_pos, SEEK_SET);
        } else {
            if ((res = mov_write_moov_tag(pb, mov, s)) < 0)
                return res;
        }
        res = 0;
    } else {
        mov_auto_flush_fragment(s, 1);
        for (i = 0; i < mov->nb_streams; i++)
           mov->tracks[i].data_offset = 0;
        if (mov->flags & FF_MOV_FLAG_GLOBAL_SIDX) {
            int64_t end;
            av_log(s, AV_LOG_INFO, "Starting second pass: inserting sidx atoms\n");
            res = shift_data(s);
            if (res < 0)
                return res;
            end = avio_tell(pb);
            avio_seek(pb, mov->reserved_header_pos, SEEK_SET);
            mov_write_sidx_tags(pb, mov, -1, 0);
            avio_seek(pb, end, SEEK_SET);
            avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
            mov_write_mfra_tag(pb, mov);
        } else {
            avio_write_marker(s->pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_TRAILER);
            mov_write_mfra_tag(pb, mov);
        }
    }

    return res;
}

Project: FFmpeg
File: movenc.c

static int handle_eac3(MOVMuxContext *mov, AVPacket *pkt, MOVTrack *track)
{
    GetBitContext gbc;
    AC3HeaderInfo tmp, *hdr = &tmp;
    struct eac3_info *info;
    int num_blocks;

    if (!track->eac3_priv && !(track->eac3_priv = av_mallocz(sizeof(*info))))
        return AVERROR(ENOMEM);
    info = track->eac3_priv;

    init_get_bits(&gbc, pkt->data, pkt->size * 8);
    if (avpriv_ac3_parse_header(&gbc, &hdr) < 0) {
        /* drop the packets until we see a good one */
        if (!track->entry) {
            av_log(mov, AV_LOG_WARNING, "Dropping invalid packet from start of the stream\n");
            return 0;
        }
        return AVERROR_INVALIDDATA;
    }

    info->data_rate = FFMAX(info->data_rate, hdr->bit_rate / 1000);
    num_blocks = hdr->num_blocks;

    if (!info->ec3_done) {
        /* AC-3 substream must be the first one */
        if (hdr->bitstream_id <= 10 && hdr->substreamid != 0)
            return AVERROR(EINVAL);

        /* this should always be the case, given that our AC-3 parser
         * concatenates dependent frames to their independent parent */
        if (hdr->frame_type == EAC3_FRAME_TYPE_INDEPENDENT) {
            /* substream ids must be incremental */
            if (hdr->substreamid > info->num_ind_sub + 1)
                return AVERROR(EINVAL);

            if (hdr->substreamid == info->num_ind_sub + 1) {
                //info->num_ind_sub++;
                avpriv_request_sample(mov->fc, "Multiple independent substreams");
                return AVERROR_PATCHWELCOME;
            } else if (hdr->substreamid < info->num_ind_sub ||
                       hdr->substreamid == 0 && info->substream[0].bsid) {
                info->ec3_done = 1;
                goto concatenate;
            }
        }

        /* fill the info needed for the "dec3" atom */
        info->substream[hdr->substreamid].fscod = hdr->sr_code;
        info->substream[hdr->substreamid].bsid  = hdr->bitstream_id;
        info->substream[hdr->substreamid].bsmod = hdr->bitstream_mode;
        info->substream[hdr->substreamid].acmod = hdr->channel_mode;
        info->substream[hdr->substreamid].lfeon = hdr->lfe_on;

        /* Parse dependent substream(s), if any */
        if (pkt->size != hdr->frame_size) {
            int cumul_size = hdr->frame_size;
            int parent = hdr->substreamid;

            while (cumul_size != pkt->size) {
                int i;
                init_get_bits(&gbc, pkt->data + cumul_size, (pkt->size - cumul_size) * 8);
                if (avpriv_ac3_parse_header(&gbc, &hdr) < 0)
                    return AVERROR_INVALIDDATA;
                if (hdr->frame_type != EAC3_FRAME_TYPE_DEPENDENT)
                    return AVERROR(EINVAL);
                cumul_size += hdr->frame_size;
                info->substream[parent].num_dep_sub++;

                /* header is parsed up to lfeon, but custom channel map may be needed */
                /* skip bsid */
                skip_bits(&gbc, 5);
                /* skip volume control params */
                for (i = 0; i < (hdr->channel_mode ? 1 : 2); i++) {
                    skip_bits(&gbc, 5); // skip dialog normalization
                    if (get_bits1(&gbc)) {
                        skip_bits(&gbc, 8); // skip compression gain word
                    }
                }
                /* get the dependent stream channel map, if exists */
                if (get_bits1(&gbc))
                    info->substream[parent].chan_loc |= (get_bits(&gbc, 16) >> 5) & 0x1f;
                else
                    info->substream[parent].chan_loc |= hdr->channel_mode;
            }
        }
    }

concatenate:
    if (!info->num_blocks && num_blocks == 6)
        return pkt->size;
    else if (info->num_blocks + num_blocks > 6)
        return AVERROR_INVALIDDATA;

    if (!info->num_blocks) {
        int ret;
        if ((ret = av_copy_packet(&info->pkt, pkt)) < 0)
            return ret;
        info->num_blocks = num_blocks;
        return 0;
    } else {
        int ret;
        if ((ret = av_grow_packet(&info->pkt, pkt->size)) < 0)
            return ret;
        memcpy(info->pkt.data + info->pkt.size - pkt->size, pkt->data, pkt->size);
        info->num_blocks += num_blocks;
        info->pkt.duration += pkt->duration;
        if ((ret = av_copy_packet_side_data(&info->pkt, pkt)) < 0)
            return ret;
        if (info->num_blocks != 6)
            return 0;
        av_packet_unref(pkt);
        if ((ret = av_copy_packet(pkt, &info->pkt)) < 0)
            return ret;
        av_packet_unref(&info->pkt);
        info->num_blocks = 0;
    }

    return pkt->size;
}

Project: FFmpeg
File: movenc.c

static int mov_write_moov_tag(AVIOContext *pb, MOVMuxContext *mov,
                              AVFormatContext *s)
{
    int i;
    int64_t pos = avio_tell(pb);
    avio_wb32(pb, 0); /* size placeholder*/
    ffio_wfourcc(pb, "moov");

    mov_setup_track_ids(mov, s);

    for (i = 0; i < mov->nb_streams; i++) {
        if (mov->tracks[i].entry <= 0 && !(mov->flags & FF_MOV_FLAG_FRAGMENT))
            continue;

        mov->tracks[i].time     = mov->time;

        if (mov->tracks[i].entry)
            build_chunks(&mov->tracks[i]);
    }

    if (mov->chapter_track)
        for (i = 0; i < s->nb_streams; i++) {
            mov->tracks[i].tref_tag = MKTAG('c','h','a','p');
            mov->tracks[i].tref_id  = mov->tracks[mov->chapter_track].track_id;
        }
    for (i = 0; i < mov->nb_streams; i++) {
        MOVTrack *track = &mov->tracks[i];
        if (track->tag == MKTAG('r','t','p',' ')) {
            track->tref_tag = MKTAG('h','i','n','t');
            track->tref_id = mov->tracks[track->src_track].track_id;
        } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
            int * fallback, size;
            fallback = (int*)av_stream_get_side_data(track->st,
                                                     AV_PKT_DATA_FALLBACK_TRACK,
                                                     &size);
            if (fallback != NULL && size == sizeof(int)) {
                if (*fallback >= 0 && *fallback < mov->nb_streams) {
                    track->tref_tag = MKTAG('f','a','l','l');
                    track->tref_id = mov->tracks[*fallback].track_id;
                }
            }
        }
    }
    for (i = 0; i < mov->nb_streams; i++) {
        if (mov->tracks[i].tag == MKTAG('t','m','c','d')) {
            int src_trk = mov->tracks[i].src_track;
            mov->tracks[src_trk].tref_tag = mov->tracks[i].tag;
            mov->tracks[src_trk].tref_id  = mov->tracks[i].track_id;
            //src_trk may have a different timescale than the tmcd track
            mov->tracks[i].track_duration = av_rescale(mov->tracks[src_trk].track_duration,
                                                       mov->tracks[i].timescale,
                                                       mov->tracks[src_trk].timescale);
        }
    }

    mov_write_mvhd_tag(pb, mov);
    if (mov->mode != MODE_MOV && !mov->iods_skip)
        mov_write_iods_tag(pb, mov);
    for (i = 0; i < mov->nb_streams; i++) {
        if (mov->tracks[i].entry > 0 || mov->flags & FF_MOV_FLAG_FRAGMENT) {
            int ret = mov_write_trak_tag(s, pb, mov, &(mov->tracks[i]), i < s->nb_streams ? s->streams[i] : NULL);
            if (ret < 0)
                return ret;
        }
    }
    if (mov->flags & FF_MOV_FLAG_FRAGMENT)
        mov_write_mvex_tag(pb, mov); /* QuickTime requires trak to precede this */

    if (mov->mode == MODE_PSP)
        mov_write_uuidusmt_tag(pb, s);
    else
        mov_write_udta_tag(pb, mov, s);

    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_write_stsd_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
{
    int64_t pos = avio_tell(pb);
    avio_wb32(pb, 0); /* size */
    ffio_wfourcc(pb, "stsd");
    avio_wb32(pb, 0); /* version & flags */
    avio_wb32(pb, 1); /* entry count */
    if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
        mov_write_video_tag(pb, mov, track);
    else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
        mov_write_audio_tag(s, pb, mov, track);
    else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE)
        mov_write_subtitle_tag(pb, track);
    else if (track->par->codec_tag == MKTAG('r','t','p',' '))
        mov_write_rtp_tag(pb, track);
    else if (track->par->codec_tag == MKTAG('t','m','c','d'))
        mov_write_tmcd_tag(pb, track);
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_write_packet(AVFormatContext *s, AVPacket *pkt)
{
    if (!pkt) {
        mov_flush_fragment(s, 1);
        return 1;
    } else {
        int i;
        MOVMuxContext *mov = s->priv_data;
        MOVTrack *trk = &mov->tracks[pkt->stream_index];

        if (!pkt->size)
            return mov_write_single_packet(s, pkt); /* Passthrough. */

        /*
         * Subtitles require special handling.
         *
         * 1) For full complaince, every track must have a sample at
         * dts == 0, which is rarely true for subtitles. So, as soon
         * as we see any packet with dts > 0, write an empty subtitle
         * at dts == 0 for any subtitle track with no samples in it.
         *
         * 2) For each subtitle track, check if the current packet's
         * dts is past the duration of the last subtitle sample. If
         * so, we now need to write an end sample for that subtitle.
         *
         * This must be done conditionally to allow for subtitles that
         * immediately replace each other, in which case an end sample
         * is not needed, and is, in fact, actively harmful.
         *
         * 3) See mov_write_trailer for how the final end sample is
         * handled.
         */
        for (i = 0; i < mov->nb_streams; i++) {
            MOVTrack *trk = &mov->tracks[i];
            int ret;

            if (trk->par->codec_id == AV_CODEC_ID_MOV_TEXT &&
                trk->track_duration < pkt->dts &&
                (trk->entry == 0 || !trk->last_sample_is_subtitle_end)) {
                ret = mov_write_subtitle_end_packet(s, i, trk->track_duration);
                if (ret < 0) return ret;
                trk->last_sample_is_subtitle_end = 1;
            }
        }

        if (trk->mode == MODE_MOV && trk->par->codec_type == AVMEDIA_TYPE_VIDEO) {
            AVPacket *opkt = pkt;
            int reshuffle_ret, ret;
            if (trk->is_unaligned_qt_rgb) {
                int64_t bpc = trk->par->bits_per_coded_sample != 15 ? trk->par->bits_per_coded_sample : 16;
                int expected_stride = ((trk->par->width * bpc + 15) >> 4)*2;
                reshuffle_ret = ff_reshuffle_raw_rgb(s, &pkt, trk->par, expected_stride);
                if (reshuffle_ret < 0)
                    return reshuffle_ret;
            } else
                reshuffle_ret = 0;
            if (trk->par->format == AV_PIX_FMT_PAL8 && !trk->pal_done) {
                ret = ff_get_packet_palette(s, opkt, reshuffle_ret, trk->palette);
                if (ret < 0)
                    goto fail;
                if (ret)
                    trk->pal_done++;
            } else if (trk->par->codec_id == AV_CODEC_ID_RAWVIDEO &&
                       (trk->par->format == AV_PIX_FMT_GRAY8 ||
                       trk->par->format == AV_PIX_FMT_MONOBLACK)) {
                for (i = 0; i < pkt->size; i++)
                    pkt->data[i] = ~pkt->data[i];
            }
            if (reshuffle_ret) {
                ret = mov_write_single_packet(s, pkt);
fail:
                if (reshuffle_ret)
                    av_packet_free(&pkt);
                return ret;
            }
        }

        return mov_write_single_packet(s, pkt);
    }
}

Project: FFmpeg
File: movenc.c

static int mov_write_hdlr_tag(AVFormatContext *s, AVIOContext *pb, MOVTrack *track)
{
    const char *hdlr, *descr = NULL, *hdlr_type = NULL;
    int64_t pos = avio_tell(pb);

    hdlr      = "dhlr";
    hdlr_type = "url ";
    descr     = "DataHandler";

    if (track) {
        hdlr = (track->mode == MODE_MOV) ? "mhlr" : "\0\0\0\0";
        if (track->par->codec_type == AVMEDIA_TYPE_VIDEO) {
            hdlr_type = "vide";
            descr     = "VideoHandler";
        } else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO) {
            hdlr_type = "soun";
            descr     = "SoundHandler";
        } else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
            if (is_clcp_track(track)) {
                hdlr_type = "clcp";
                descr = "ClosedCaptionHandler";
            } else {
                if (track->tag == MKTAG('t','x','3','g')) {
                    hdlr_type = "sbtl";
                } else if (track->tag == MKTAG('m','p','4','s')) {
                    hdlr_type = "subp";
                } else {
                    hdlr_type = "text";
                }
            descr = "SubtitleHandler";
            }
        } else if (track->par->codec_tag == MKTAG('r','t','p',' ')) {
            hdlr_type = "hint";
            descr     = "HintHandler";
        } else if (track->par->codec_tag == MKTAG('t','m','c','d')) {
            hdlr_type = "tmcd";
            descr = "TimeCodeHandler";
        } else {
            char tag_buf[32];
            av_get_codec_tag_string(tag_buf, sizeof(tag_buf),
                                    track->par->codec_tag);

            av_log(s, AV_LOG_WARNING,
                   "Unknown hldr_type for %s / 0x%04X, writing dummy values\n",
                   tag_buf, track->par->codec_tag);
        }
        if (track->st) {
            // hdlr.name is used by some players to identify the content title
            // of the track. So if an alternate handler description is
            // specified, use it.
            AVDictionaryEntry *t;
            t = av_dict_get(track->st->metadata, "handler", NULL, 0);
            if (t && utf8len(t->value))
                descr = t->value;
        }
    }

    avio_wb32(pb, 0); /* size */
    ffio_wfourcc(pb, "hdlr");
    avio_wb32(pb, 0); /* Version & flags */
    avio_write(pb, hdlr, 4); /* handler */
    ffio_wfourcc(pb, hdlr_type); /* handler type */
    avio_wb32(pb, 0); /* reserved */
    avio_wb32(pb, 0); /* reserved */
    avio_wb32(pb, 0); /* reserved */
    if (!track || track->mode == MODE_MOV)
        avio_w8(pb, strlen(descr)); /* pascal string */
    avio_write(pb, descr, strlen(descr)); /* handler description */
    if (track && track->mode != MODE_MOV)
        avio_w8(pb, 0); /* c string */
    return update_size(pb, pos);
}

Project: FFmpeg
File: movenc.c

static int mov_write_minf_tag(AVFormatContext *s, AVIOContext *pb, MOVMuxContext *mov, MOVTrack *track)
{
    int64_t pos = avio_tell(pb);
    int ret;

    avio_wb32(pb, 0); /* size */
    ffio_wfourcc(pb, "minf");
    if (track->par->codec_type == AVMEDIA_TYPE_VIDEO)
        mov_write_vmhd_tag(pb);
    else if (track->par->codec_type == AVMEDIA_TYPE_AUDIO)
        mov_write_smhd_tag(pb);
    else if (track->par->codec_type == AVMEDIA_TYPE_SUBTITLE) {
        if (track->tag == MKTAG('t','e','x','t') || is_clcp_track(track)) {
            mov_write_gmhd_tag(pb, track);
        } else {
            mov_write_nmhd_tag(pb);
        }
    } else if (track->tag == MKTAG('r','t','p',' ')) {
        mov_write_hmhd_tag(pb);
    } else if (track->tag == MKTAG('t','m','c','d')) {
        if (track->mode != MODE_MOV)
            mov_write_nmhd_tag(pb);
        else
            mov_write_gmhd_tag(pb, track);
    }
    if (track->mode == MODE_MOV) /* FIXME: Why do it for MODE_MOV only ? */
        mov_write_hdlr_tag(s, pb, NULL);
    mov_write_dinf_tag(pb);
    if ((ret = mov_write_stbl_tag(s, pb, mov, track)) < 0)
        return ret;
    return update_size(pb, pos);
}