videolan/ffmpeg
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ffmpeg: factor out initializing input streams.

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This commit is contained in:
Anton Khirnov 2011-08-30 15:53:55 +02:00 committed by Michael Niedermayer
parent 8b85b9fa42
commit 94adca68f8
1 changed files with 35 additions and 34 deletions
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69
ffmpeg.c
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@ -1882,6 +1882,36 @@ static void print_sdp(OutputFile *output_files, int n)
av_freep(&avc);
}
static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
char *error, int error_len)
{
int i;
InputStream *ist = &input_streams[ist_index];
if (ist->decoding_needed) {
AVCodec *codec = ist->dec;
if (!codec)
codec = avcodec_find_decoder(ist->st->codec->codec_id);
if (!codec) {
snprintf(error, sizeof(error), "Decoder (codec %s) not found for input stream #%d.%d",
avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
return AVERROR(EINVAL);
}
if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
ist->file_index, ist->st->index);
return AVERROR(EINVAL);
}
assert_codec_experimental(ist->st->codec, 0);
assert_avoptions(ist->opts);
}
ist->pts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames*AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
ist->next_pts = AV_NOPTS_VALUE;
ist->is_start = 1;
return 0;
}
/*
* The following code is the main loop of the file converter
*/
@ -1890,7 +1920,7 @@ static int transcode(OutputFile *output_files,
InputFile *input_files,
int nb_input_files)
{
int ret = 0, i, j;
int ret = 0, i;
AVFormatContext *is, *os;
AVCodecContext *codec, *icodec;
OutputStream *ost;
@ -2180,39 +2210,10 @@ static int transcode(OutputFile *output_files,
}
}
/* open each decoder */
for (i = 0; i < nb_input_streams; i++) {
ist = &input_streams[i];
if (ist->decoding_needed) {
AVCodec *codec = ist->dec;
if (!codec)
codec = avcodec_find_decoder(ist->st->codec->codec_id);
if (!codec) {
snprintf(error, sizeof(error), "Decoder (codec %s) not found for input stream #%d.%d",
avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
ret = AVERROR(EINVAL);
goto dump_format;
}
if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
ist->file_index, ist->st->index);
ret = AVERROR(EINVAL);
goto dump_format;
}
assert_codec_experimental(ist->st->codec, 0);
assert_avoptions(ost->opts);
}
}
/* init pts */
for (i = 0; i < nb_input_streams; i++) {
AVStream *st;
ist = &input_streams[i];
st= ist->st;
ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
ist->next_pts = AV_NOPTS_VALUE;
ist->is_start = 1;
}
/* init input streams */
for (i = 0; i < nb_input_streams; i++)
if ((ret = init_input_stream(i, output_streams, nb_output_streams, error, sizeof(error)) < 0))
goto dump_format;
/* open files and write file headers */
for (i = 0; i < nb_output_files; i++) {