generic-library/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

avconv: use default channel layouts when they are unknown

Browse Source 
If either input or output layout is known and the channel counts match,
use the known layout for both. Otherwise choose the default layout based on
av_get_default_channel_layout().

Changed some FATE references due to some WAVE files now having a non-zero
channel mask.
This commit is contained in:
Justin Ruggles
2012-04-05 18:11:28 -04:00
parent 95a8dac57b
commit d3c59d5003
6 changed files with 61 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
avconv.c
View File

@@ -2145,6 +2145,51 @@ static void print_sdp(OutputFile *output_files, int n)
av_freep(&avc);
}
static void get_default_channel_layouts(OutputStream *ost, InputStream *ist)
{
char layout_name[256];
AVCodecContext *enc = ost->st->codec;
AVCodecContext *dec = ist->st->codec;
if (!dec->channel_layout) {
if (enc->channel_layout && dec->channels == enc->channels) {
dec->channel_layout = enc->channel_layout;
} else {
dec->channel_layout = av_get_default_channel_layout(dec->channels);
if (!dec->channel_layout) {
av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
"layout for Input Stream #%d.%d\n", ist->file_index,
ist->st->index);
exit_program(1);
}
}
av_get_channel_layout_string(layout_name, sizeof(layout_name),
dec->channels, dec->channel_layout);
av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
"#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
}
if (!enc->channel_layout) {
if (dec->channels == enc->channels) {
enc->channel_layout = dec->channel_layout;
return;
} else {
enc->channel_layout = av_get_default_channel_layout(enc->channels);
}
if (!enc->channel_layout) {
av_log(NULL, AV_LOG_FATAL, "Unable to find default channel layout "
"for Output Stream #%d.%d\n", ost->file_index,
ost->st->index);
exit_program(1);
}
av_get_channel_layout_string(layout_name, sizeof(layout_name),
enc->channels, enc->channel_layout);
av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Output Stream "
"#%d.%d : %s\n", ost->file_index, ost->st->index, layout_name);
}
}
static int init_input_stream(int ist_index, OutputStream *output_streams, int nb_output_streams,
char *error, int error_len)
{
@@ -2183,6 +2228,17 @@ static int init_input_stream(int ist_index, OutputStream *output_streams, int nb
}
assert_codec_experimental(ist->st->codec, 0);
assert_avoptions(ist->opts);
if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
for (i = 0; i < nb_output_streams; i++) {
OutputStream *ost = &output_streams[i];
if (ost->source_index == ist_index) {
if (!ist->st->codec->channel_layout || !ost->st->codec->channel_layout)
get_default_channel_layouts(ost, ist);
break;
}
}
}
}
ist->last_dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;