generic-library/ffmpeg
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added option programid to select the program to use and relative code to handle it

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Originally committed as revision 10866 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Nico Sabbi 2007-10-27 18:46:25 +00:00
parent 90f0344165
commit 50e143c4be
1 changed files with 46 additions and 0 deletions
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ffmpeg.c
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@ -187,6 +187,7 @@ static int opt_shortest = 0; //
static int video_global_header = 0;
static char *vstats_filename;
static FILE *vstats_file;
static int opt_programid = 0;
static int rate_emu = 0;
@ -1350,6 +1351,33 @@ static void print_sdp(AVFormatContext **avc, int n)
printf("SDP:\n%s\n", sdp);
}
static int stream_index_from_inputs(AVFormatContext **input_files,
int nb_input_files,
AVInputFile *file_table,
AVInputStream **ist_table,
enum CodecType type,
int programid)
{
int p, q, r, s, z;
AVInputStream *ist;
for(z=0; z<nb_input_files; z++) {
AVFormatContext *ic = input_files[z];
for(p=0; p<ic->nb_programs; p++) {
AVProgram *program = ic->programs[p];
if(program->id != programid)
continue;
for(q=0; q<program->nb_stream_indexes; q++) {
int sidx = program->stream_index[q];
int ris = file_table[z].ist_index + sidx;
if(ist_table[ris]->discard && ic->streams[sidx]->codec->codec_type == type)
return ris;
}
}
}
return -1;
}
/*
* The following code is the main loop of the file converter
*/
@ -1476,6 +1504,14 @@ static int av_encode(AVFormatContext **output_files,
}
} else {
if(opt_programid) {
found = 0;
j = stream_index_from_inputs(input_files, nb_input_files, file_table, ist_table, ost->st->codec->codec_type, opt_programid);
if(j != -1) {
ost->source_index = j;
found = 1;
}
} else {
/* get corresponding input stream index : we select the first one with the right type */
found = 0;
for(j=0;j<nb_istreams;j++) {
@ -1487,8 +1523,10 @@ static int av_encode(AVFormatContext **output_files,
break;
}
}
}
if (!found) {
if(! opt_programid) {
/* try again and reuse existing stream */
for(j=0;j<nb_istreams;j++) {
ist = ist_table[j];
@ -1497,6 +1535,7 @@ static int av_encode(AVFormatContext **output_files,
found = 1;
}
}
}
if (!found) {
fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
ost->file_index, ost->index);
@ -2590,6 +2629,12 @@ static void opt_input_file(const char *filename)
print_error(filename, err);
exit(1);
}
if(opt_programid) {
int i;
for(i=0; i<ic->nb_programs; i++)
if(ic->programs[i]->id != opt_programid)
ic->programs[i]->discard = AVDISCARD_ALL;
}
ic->loop_input = loop_input;
@ -3635,6 +3680,7 @@ const OptionDef options[] = {
{ "copyts", OPT_BOOL | OPT_EXPERT, {(void*)&copy_ts}, "copy timestamps" },
{ "shortest", OPT_BOOL | OPT_EXPERT, {(void*)&opt_shortest}, "finish encoding within shortest input" }, //
{ "dts_delta_threshold", HAS_ARG | OPT_FLOAT | OPT_EXPERT, {(void*)&dts_delta_threshold}, "timestamp discontinuity delta threshold", "" },
{ "programid", HAS_ARG | OPT_INT | OPT_EXPERT, {(void*)&opt_programid}, "desired program number", "" },
/* video options */
{ "vframes", OPT_INT | HAS_ARG | OPT_VIDEO, {(void*)&max_frames[CODEC_TYPE_VIDEO]}, "set the number of video frames to record", "number" },