int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options) { int ret = 0; AVDictionary *tmp = NULL; if (avcodec_is_open(avctx)) return 0; if ((!codec && !avctx->codec)) { av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n"); return AVERROR(EINVAL); } if ((codec && avctx->codec && codec != avctx->codec)) { av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, " "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name); return AVERROR(EINVAL); } if (!codec) codec = avctx->codec; if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE) return AVERROR(EINVAL); if (options) av_dict_copy(&tmp, *options, 0); ret = ff_lock_avcodec(avctx); if (ret < 0) return ret; avctx->internal = av_mallocz(sizeof(AVCodecInternal)); if (!avctx->internal) { ret = AVERROR(ENOMEM); goto end; } avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool)); if (!avctx->internal->pool) { ret = AVERROR(ENOMEM); goto free_and_end; } if (codec->priv_data_size > 0) { if (!avctx->priv_data) { avctx->priv_data = av_mallocz(codec->priv_data_size); if (!avctx->priv_data) { ret = AVERROR(ENOMEM); goto end; } if (codec->priv_class) { *(const AVClass **)avctx->priv_data = codec->priv_class; av_opt_set_defaults(avctx->priv_data); } } if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0) goto free_and_end; } else { avctx->priv_data = NULL; } if ((ret = av_opt_set_dict(avctx, &tmp)) < 0) goto free_and_end; //We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions if (!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == AV_CODEC_ID_H264)){ if (avctx->coded_width && avctx->coded_height) avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height); else if (avctx->width && avctx->height) avcodec_set_dimensions(avctx, avctx->width, avctx->height); } if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height) && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) { av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n"); avcodec_set_dimensions(avctx, 0, 0); } /* if the decoder init function was already called previously, * free the already allocated subtitle_header before overwriting it */ if (av_codec_is_decoder(codec)) av_freep(&avctx->subtitle_header); if (avctx->channels > FF_SANE_NB_CHANNELS) { ret = AVERROR(EINVAL); goto free_and_end; } avctx->codec = codec; if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) && avctx->codec_id == AV_CODEC_ID_NONE) { avctx->codec_type = codec->type; avctx->codec_id = codec->id; } if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) { av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n"); ret = AVERROR(EINVAL); goto free_and_end; } avctx->frame_number = 0; avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id); if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder"; AVCodec *codec2; av_log(NULL, AV_LOG_ERROR, "The %s '%s' is experimental but experimental codecs are not enabled, " "add '-strict %d' if you want to use it.\n", codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL); codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id); if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL)) av_log(NULL, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n", codec_string, codec2->name); ret = AVERROR_EXPERIMENTAL; goto free_and_end; } if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && (!avctx->time_base.num || !avctx->time_base.den)) { avctx->time_base.num = 1; avctx->time_base.den = avctx->sample_rate; } if (!HAVE_THREADS) av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n"); if (HAVE_THREADS) { ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL); ff_lock_avcodec(avctx); if (ret < 0) goto free_and_end; } if (HAVE_THREADS && !avctx->thread_opaque && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) { ret = ff_thread_init(avctx); if (ret < 0) { goto free_and_end; } } if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS)) avctx->thread_count = 1; if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) { av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n", avctx->codec->max_lowres); ret = AVERROR(EINVAL); goto free_and_end; } if (av_codec_is_encoder(avctx->codec)) { int i; if (avctx->codec->sample_fmts) { for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) { if (avctx->sample_fmt == avctx->codec->sample_fmts[i]) break; if (avctx->channels == 1 && av_get_planar_sample_fmt(avctx->sample_fmt) == av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) { avctx->sample_fmt = avctx->codec->sample_fmts[i]; break; } } if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) { char buf[128]; snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt); av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n", (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf)); ret = AVERROR(EINVAL); goto free_and_end; } } if (avctx->codec->pix_fmts) { for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++) if (avctx->pix_fmt == avctx->codec->pix_fmts[i]) break; if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG) && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) { char buf[128]; snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt); av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n", (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf)); ret = AVERROR(EINVAL); goto free_and_end; } } if (avctx->codec->supported_samplerates) { for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++) if (avctx->sample_rate == avctx->codec->supported_samplerates[i]) break; if (avctx->codec->supported_samplerates[i] == 0) { av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n", avctx->sample_rate); ret = AVERROR(EINVAL); goto free_and_end; } } if (avctx->codec->channel_layouts) { if (!avctx->channel_layout) { av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n"); } else { for (i = 0; avctx->codec->channel_layouts[i] != 0; i++) if (avctx->channel_layout == avctx->codec->channel_layouts[i]) break; if (avctx->codec->channel_layouts[i] == 0) { char buf[512]; av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout); av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf); ret = AVERROR(EINVAL); goto free_and_end; } } } if (avctx->channel_layout && avctx->channels) { int channels = av_get_channel_layout_nb_channels(avctx->channel_layout); if (channels != avctx->channels) { char buf[512]; av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout); av_log(avctx, AV_LOG_ERROR, "Channel layout '%s' with %d channels does not match number of specified channels %d\n", buf, channels, avctx->channels); ret = AVERROR(EINVAL); goto free_and_end; } } else if (avctx->channel_layout) { avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout); } if(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec_id != AV_CODEC_ID_PNG // For mplayer ) { if (avctx->width <= 0 || avctx->height <= 0) { av_log(avctx, AV_LOG_ERROR, "dimensions not set\n"); ret = AVERROR(EINVAL); goto free_and_end; } } if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO) && avctx->bit_rate>0 && avctx->bit_rate<1000) { av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate); } if (!avctx->rc_initial_buffer_occupancy) avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4; } avctx->pts_correction_num_faulty_pts = avctx->pts_correction_num_faulty_dts = 0; avctx->pts_correction_last_pts = avctx->pts_correction_last_dts = INT64_MIN; if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME) || avctx->internal->frame_thread_encoder)) { ret = avctx->codec->init(avctx); if (ret < 0) { goto free_and_end; } } ret=0; if (av_codec_is_decoder(avctx->codec)) { if (!avctx->bit_rate) avctx->bit_rate = get_bit_rate(avctx); /* validate channel layout from the decoder */ if (avctx->channel_layout) { int channels = av_get_channel_layout_nb_channels(avctx->channel_layout); if (!avctx->channels) avctx->channels = channels; else if (channels != avctx->channels) { char buf[512]; av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout); av_log(avctx, AV_LOG_WARNING, "Channel layout '%s' with %d channels does not match specified number of channels %d: " "ignoring specified channel layout\n", buf, channels, avctx->channels); avctx->channel_layout = 0; } } if (avctx->channels && avctx->channels < 0 || avctx->channels > FF_SANE_NB_CHANNELS) { ret = AVERROR(EINVAL); goto free_and_end; } if (avctx->sub_charenc) { if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) { av_log(avctx, AV_LOG_ERROR, "Character encoding is only " "supported with subtitles codecs\n"); ret = AVERROR(EINVAL); goto free_and_end; } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) { av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, " "subtitles character encoding will be ignored\n", avctx->codec_descriptor->name); avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING; } else { /* input character encoding is set for a text based subtitle * codec at this point */ if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC) avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER; if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) { #if CONFIG_ICONV iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc); if (cd == (iconv_t)-1) { av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context " "with input character encoding \"%s\"\n", avctx->sub_charenc); ret = AVERROR(errno); goto free_and_end; } iconv_close(cd); #else av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles " "conversion needs a libavcodec built with iconv support " "for this codec\n"); ret = AVERROR(ENOSYS); goto free_and_end; #endif } } } } end: ff_unlock_avcodec(); if (options) { av_dict_free(options); *options = tmp; } return ret; free_and_end: av_dict_free(&tmp); av_freep(&avctx->priv_data); if (avctx->internal) av_freep(&avctx->internal->pool); av_freep(&avctx->internal); avctx->codec = NULL; goto end; }
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options) { int ret = 0; AVDictionary *tmp = NULL; if (avcodec_is_open(avctx)) return 0; if ((!codec && !avctx->codec)) { av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n"); return AVERROR(EINVAL); } if ((codec && avctx->codec && codec != avctx->codec)) { av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, " "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name); return AVERROR(EINVAL); } if (!codec) codec = avctx->codec; if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE) return AVERROR(EINVAL); if (options) av_dict_copy(&tmp, *options, 0); ret = ff_lock_avcodec(avctx); if (ret < 0) return ret; avctx->internal = av_mallocz(sizeof(AVCodecInternal)); if (!avctx->internal) { ret = AVERROR(ENOMEM); goto end; } avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool)); if (!avctx->internal->pool) { ret = AVERROR(ENOMEM); goto free_and_end; } if (codec->priv_data_size > 0) { if (!avctx->priv_data) { avctx->priv_data = av_mallocz(codec->priv_data_size); if (!avctx->priv_data) { ret = AVERROR(ENOMEM); goto end; } if (codec->priv_class) { *(const AVClass **)avctx->priv_data = codec->priv_class; av_opt_set_defaults(avctx->priv_data); } } if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0) goto free_and_end; } else { avctx->priv_data = NULL; } if ((ret = av_opt_set_dict(avctx, &tmp)) < 0) goto free_and_end;  