static int read_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int is_meta, int64_t maxpos) { int count = ffio_read_varlen(bc); int skip_start = 0; int skip_end = 0; int channels = 0; int64_t channel_layout = 0; int sample_rate = 0; int width = 0; int height = 0; int i, ret; for (i=0; i<count; i++) { uint8_t name[256], str_value[256], type_str[256]; int value; if (avio_tell(bc) >= maxpos) return AVERROR_INVALIDDATA; ret = get_str(bc, name, sizeof(name)); if (ret < 0) { av_log(s, AV_LOG_ERROR, "get_str failed while reading sm data\n"); return ret; } value = get_s(bc); if (value == -1) { get_str(bc, str_value, sizeof(str_value)); av_log(s, AV_LOG_WARNING, "Unknown string %s / %s\n", name, str_value); } else if (value == -2) { uint8_t *dst = NULL; int64_t v64, value_len; get_str(bc, type_str, sizeof(type_str)); value_len = ffio_read_varlen(bc); if (avio_tell(bc) + value_len >= maxpos) return AVERROR_INVALIDDATA; if (!strcmp(name, "Palette")) { dst = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, value_len); } else if (!strcmp(name, "Extradata")) { dst = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, value_len); } else if (sscanf(name, "CodecSpecificSide%"SCNd64"", &v64) == 1) { dst = av_packet_new_side_data(pkt, AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL, value_len + 8); if(!dst) return AVERROR(ENOMEM); AV_WB64(dst, v64); dst += 8; } else if (!strcmp(name, "ChannelLayout") && value_len == 8) { channel_layout = avio_rl64(bc); continue; } else { av_log(s, AV_LOG_WARNING, "Unknown data %s / %s\n", name, type_str); avio_skip(bc, value_len); continue; } if(!dst) return AVERROR(ENOMEM); avio_read(bc, dst, value_len); } else if (value == -3) { value = get_s(bc); } else if (value == -4) { value = ffio_read_varlen(bc); } else if (value < -4) { get_s(bc); } else { if (!strcmp(name, "SkipStart")) { skip_start = value; } else if (!strcmp(name, "SkipEnd")) { skip_end = value; } else if (!strcmp(name, "Channels")) { channels = value; } else if (!strcmp(name, "SampleRate")) { sample_rate = value; } else if (!strcmp(name, "Width")) { width = value; } else if (!strcmp(name, "Height")) { height = value; } else { av_log(s, AV_LOG_WARNING, "Unknown integer %s\n", name); } } } if (channels || channel_layout || sample_rate || width || height) { uint8_t *dst = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, 28); if (!dst) return AVERROR(ENOMEM); bytestream_put_le32(&dst, AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT*(!!channels) + AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT*(!!channel_layout) + AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE*(!!sample_rate) + AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS*(!!(width|height)) ); if (channels) bytestream_put_le32(&dst, channels); if (channel_layout) bytestream_put_le64(&dst, channel_layout); if (sample_rate) bytestream_put_le32(&dst, sample_rate); if (width || height){ bytestream_put_le32(&dst, width); bytestream_put_le32(&dst, height); } } if (skip_start || skip_end) { uint8_t *dst = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10); if (!dst) return AVERROR(ENOMEM); AV_WL32(dst, skip_start); AV_WL32(dst+4, skip_end); } return 0; }
static int read_sm_data(AVFormatContext *s, AVIOContext *bc, AVPacket *pkt, int is_meta, int64_t maxpos) { int count = ffio_read_varlen(bc); int skip_start = 0; int skip_end = 0; int channels = 0; int64_t channel_layout = 0; int sample_rate = 0; int width = 0; int height = 0; int i, ret; for (i=0; i<count; i++) { uint8_t name[256], str_value[256], type_str[256]; int value; if (avio_tell(bc) >= maxpos) return AVERROR_INVALIDDATA; ret = get_str(bc, name, sizeof(name)); if (ret < 0) { av_log(s, AV_LOG_ERROR, "get_str failed while reading sm data\n"); return ret; } value = get_s(bc); if (value == -1) { get_str(bc, str_value, sizeof(str_value)); av_log(s, AV_LOG_WARNING, "Unknown string %s / %s\n", name, str_value); } else if (value == -2) { uint8_t *dst = NULL; int64_t v64, value_len; get_str(bc, type_str, sizeof(type_str)); value_len = ffio_read_varlen(bc); if (avio_tell(bc) + value_len >= maxpos) return AVERROR_INVALIDDATA; if (!strcmp(name, "Palette")) { dst = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, value_len); } else if (!strcmp(name, "Extradata")) { dst = av_packet_new_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, value_len); } else if (sscanf(name, "CodecSpecificSide%"SCNd64"", &v64) == 1) { dst = av_packet_new_side_data(pkt, AV_PKT_DATA_MATROSKA_BLOCKADDITIONAL, value_len + 8); if(!dst) return AVERROR(ENOMEM); AV_WB64(dst, v64); dst += 8; } else if (!strcmp(name, "ChannelLayout") && value_len == 8) { channel_layout = avio_rl64(bc); continue; } else { av_log(s, AV_LOG_WARNING, "Unknown data %s / %s\n", name, type_str); avio_skip(bc, value_len); continue; } if(!dst) return AVERROR(ENOMEM); avio_read(bc, dst, value_len); } else if (value == -3) { value = get_s(bc); } else if (value == -4) { value = ffio_read_varlen(bc); } else if (value < -4) { get_s(bc); } else { if (!strcmp(name, "SkipStart")) { skip_start = value; } else if (!strcmp(name, "SkipEnd")) { skip_end = value; } else if (!strcmp(name, "Channels")) { channels = value; } else if (!strcmp(name, "SampleRate")) { sample_rate = value; } else if (!strcmp(name, "Width")) { width = value; } else if (!strcmp(name, "Height")) { height = value; } else { av_log(s, AV_LOG_WARNING, "Unknown integer %s\n", name); } } } if (channels || channel_layout || sample_rate || width || height) { uint8_t *dst = av_packet_new_side_data(pkt, AV_PKT_DATA_PARAM_CHANGE, 28); if (!dst) return AVERROR(ENOMEM); bytestream_put_le32(&dst, AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT*(!!channels) + AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT*(!!channel_layout) + AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE*(!!sample_rate) + AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS*(!!(width|height)) ); if (channels) bytestream_put_le32(&dst, channels); if (channel_layout) bytestream_put_le64(&dst, channel_layout); if (sample_rate) bytestream_put_le32(&dst, sample_rate); if (width || height){ bytestream_put_le32(&dst, width); bytestream_put_le32(&dst, height); } } if (skip_start || skip_end) { uint8_t *dst = av_packet_new_side_data(pkt, AV_PKT_DATA_SKIP_SAMPLES, 10); if (!dst) return AVERROR(ENOMEM); AV_WL32(dst, skip_start); AV_WL32(dst+4, skip_end); } return 0; }