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ffmpeg: Support passing commands to filters at runtime

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-08-28 20:47:06 +02:00
parent 1e5014c7c7
commit bb22f39fe2
1 changed files with 17 additions and 0 deletions
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17
ffmpeg.c
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@ -2681,6 +2681,22 @@ static int transcode(AVFormatContext **output_files,
do_pkt_dump = 1;
av_log_set_level(AV_LOG_DEBUG);
}
if (key == 'c' || key == 'C'){
char ret[4096], target[64], cmd[256], arg[256]={0};
fprintf(stderr, "\nEnter command: <target> <command>[ <argument>]\n");
if(scanf("%4095[^\n\r]%*c", ret) == 1 && sscanf(ret, "%63[^ ] %255[^ ] %255[^\n]", target, cmd, arg) >= 2){
for(i=0;i<nb_ostreams;i++) {
int r;
ost = ost_table[i];
if(ost->graph){
r= avfilter_graph_send_command(ost->graph, target, cmd, arg, ret, sizeof(ret), key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
fprintf(stderr, "Command reply for %d: %d, %s\n", i, r, ret);
}
}
}else{
fprintf(stderr, "Parse error\n");
}
}
if (key == 'd' || key == 'D'){
int debug=0;
if(key == 'D') {
@ -2705,6 +2721,7 @@ static int transcode(AVFormatContext **output_files,
"? show this help\n"
"+ increase verbosity\n"
"- decrease verbosity\n"
"c Send command to filtergraph\n"
"D cycle through available debug modes\n"
"h dump packets/hex press to cycle through the 3 states\n"
"q quit\n"