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Code Issues Releases Activity

allow passing subtitles header between decoder and encoder

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Originally committed as revision 25745 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2010-11-13 13:57:49 +00:00
parent 2722dd6ebf
commit cb2c971d91
3 changed files with 29 additions and 1 deletions
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11
ffmpeg.c
View File

@ -2284,6 +2284,7 @@ static int transcode(AVFormatContext **output_files,
ost = ost_table[i];
if (ost->encoding_needed) {
AVCodec *codec = i < nb_output_codecs ? output_codecs[i] : NULL;
AVCodecContext *dec = ist_table[ost->source_index]->st->codec;
if (!codec)
codec = avcodec_find_encoder(ost->st->codec->codec_id);
if (!codec) {
@ -2292,6 +2293,15 @@ static int transcode(AVFormatContext **output_files,
ret = AVERROR(EINVAL);
goto dump_format;
}
if (dec->subtitle_header) {
ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
if (!ost->st->codec->subtitle_header) {
ret = AVERROR(ENOMEM);
goto dump_format;
}
memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
}
if (avcodec_open(ost->st->codec, codec) < 0) {
snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
ost->file_index, ost->index);
@ -2690,6 +2700,7 @@ static int transcode(AVFormatContext **output_files,
}
av_fifo_free(ost->fifo); /* works even if fifo is not
initialized but set to zero */
av_freep(&ost->st->codec->subtitle_header);
av_free(ost->pict_tmp.data[0]);
av_free(ost->forced_kf_pts);
if (ost->video_resample)

11
libavcodec/avcodec.h
View File

@ -2757,6 +2757,17 @@ typedef struct AVCodecContext {
* - decoding: unused
*/
int slices;
/**
* Header containing style information for text subtitles.
* For SUBTITLE_ASS subtitle type, it should contain the whole ASS
* [Script Info] and [V4+ Styles] section, plus the [Events] line and
* the Format line following. It shouldn't include any Dialogue line.
* - encoding: Set/allocated/freed by user (before avcodec_open())
* - decoding: Set/allocated/freed by libavcodec (by avcodec_open())
*/
uint8_t *subtitle_header;
int subtitle_header_size;
} AVCodecContext;
/**

8
libavformat/utils.c
View File

@ -2206,9 +2206,14 @@ int av_find_stream_info(AVFormatContext *ic)
if (codec && codec->capabilities & CODEC_CAP_CHANNEL_CONF)
st->codec->channels = 0;
/* Ensure that subtitle_header is properly set. */
if (st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE
&& codec && !st->codec->codec)
avcodec_open(st->codec, codec);
//try to just open decoders, in case this is enough to get parameters
if(!has_codec_parameters(st->codec)){
if (codec)
if (codec && !st->codec->codec)
avcodec_open(st->codec, codec);
}
}
@ -2471,6 +2476,7 @@ void av_close_input_stream(AVFormatContext *s)
av_metadata_free(&st->metadata);
av_free(st->index_entries);
av_free(st->codec->extradata);
av_free(st->codec->subtitle_header);
av_free(st->codec);
#if FF_API_OLD_METADATA
av_free(st->filename);