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Code Issues Releases Activity

avconv: check for an incompatible changing channel layout

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The decoder can change the layout and channel count during decoding,
but currently we only validate that the two are compatible when opening
the codec. This checks for incompatibilities after each decoded frame.
This commit is contained in:
Justin Ruggles 2012-04-17 13:30:00 -04:00
parent 6208313aeb
commit d8b06521a9
1 changed files with 54 additions and 45 deletions
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99
avconv.c
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@ -1191,6 +1191,58 @@ static int check_recording_time(OutputStream *ost)
return 1;
}
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 &&
av_get_channel_layout_nb_channels(dec->channel_layout) != dec->channels) {
av_get_channel_layout_string(layout_name, sizeof(layout_name),
dec->channels, dec->channel_layout);
av_log(NULL, AV_LOG_ERROR, "New channel layout (%s) is invalid\n",
layout_name);
dec->channel_layout = 0;
}
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 void generate_silence(uint8_t* buf, enum AVSampleFormat sample_fmt, size_t size)
{
int fill_char = 0x00;
@ -1301,6 +1353,8 @@ static void do_audio_out(AVFormatContext *s, OutputStream *ost,
uint8_t *buf = decoded_frame->data[0];
int size = decoded_frame->nb_samples * dec->channels * isize;
get_default_channel_layouts(ost, ist);
if (alloc_audio_output_buf(dec, enc, decoded_frame->nb_samples) < 0) {
av_log(NULL, AV_LOG_FATAL, "Error allocating audio buffer\n");
exit_program(1);
@ -2430,51 +2484,6 @@ static void print_sdp(void)
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, char *error, int error_len)
{
int i;