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avconv: add support for audio in complex filtergraphs.

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pull/30/merge
Anton Khirnov 13 years ago
parent 90c9edba58
commit 0ad26cdf24
1 changed files with 133 additions and 13 deletions
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  1. 138
      avconv.c

138
avconv.c
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@ -215,7 +215,7 @@ typedef struct InputStream {
FrameBuffer *buffer_pool;
/* decoded data from this stream goes into all those filters
* currently video only */
* currently video and audio only */
InputFilter **filters;
int nb_filters;
} InputStream;
@ -889,8 +889,9 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
int i;
// TODO: support other filter types
if (type != AVMEDIA_TYPE_VIDEO) {
av_log(NULL, AV_LOG_FATAL, "Only video filters supported currently.\n");
if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
"currently.\n");
exit_program(1);
}
@ -951,7 +952,7 @@ static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
}
static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
{
char *pix_fmts;
AVCodecContext *codec = ofilter->ost->st->codec;
@ -1005,6 +1006,104 @@ static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFil
return 0;
}
static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
{
OutputStream *ost = ofilter->ost;
AVCodecContext *codec = ost->st->codec;
AVFilterContext *last_filter = out->filter_ctx;
int pad_idx = out->pad_idx;
char *sample_fmts, *sample_rates, *channel_layouts;
int ret;
ret = avfilter_graph_create_filter(&ofilter->filter,
avfilter_get_by_name("abuffersink"),
"out", NULL, NULL, fg->graph);
if (ret < 0)
return ret;
if (codec->channels && !codec->channel_layout)
codec->channel_layout = av_get_default_channel_layout(codec->channels);
sample_fmts = choose_sample_fmts(ost);
sample_rates = choose_sample_rates(ost);
channel_layouts = choose_channel_layouts(ost);
if (sample_fmts || sample_rates || channel_layouts) {
AVFilterContext *format;
char args[256];
int len = 0;
if (sample_fmts)
len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
sample_fmts);
if (sample_rates)
len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
sample_rates);
if (channel_layouts)
len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
channel_layouts);
args[len - 1] = 0;
av_freep(&sample_fmts);
av_freep(&sample_rates);
av_freep(&channel_layouts);
ret = avfilter_graph_create_filter(&format,
avfilter_get_by_name("aformat"),
"aformat", args, NULL, fg->graph);
if (ret < 0)
return ret;
ret = avfilter_link(last_filter, pad_idx, format, 0);
if (ret < 0)
return ret;
last_filter = format;
pad_idx = 0;
}
if (audio_sync_method > 0) {
AVFilterContext *async;
char args[256];
int len = 0;
av_log(NULL, AV_LOG_WARNING, "-async has been deprecated. Used the "
"asyncts audio filter instead.\n");
if (audio_sync_method > 1)
len += snprintf(args + len, sizeof(args) - len, "compensate=1:"
"max_comp=%d:", audio_sync_method);
snprintf(args + len, sizeof(args) - len, "min_delta=%f",
audio_drift_threshold);
ret = avfilter_graph_create_filter(&async,
avfilter_get_by_name("asyncts"),
"async", args, NULL, fg->graph);
if (ret < 0)
return ret;
ret = avfilter_link(last_filter, pad_idx, async, 0);
if (ret < 0)
return ret;
last_filter = async;
pad_idx = 0;
}
if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
return ret;
return 0;
}
static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
{
switch (out->filter_ctx->output_pads[out->pad_idx].type) {
case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
default: av_assert0(0);
}
}
static int configure_complex_filter(FilterGraph *fg)
{
AVFilterInOut *inputs, *outputs, *cur;
@ -1024,16 +1123,34 @@ static int configure_complex_filter(FilterGraph *fg)
InputFilter *ifilter = fg->inputs[i];
InputStream *ist = ifilter->ist;
AVRational sar;
AVFilter *filter;
char args[255];
sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
switch (cur->filter_ctx->input_pads[cur->pad_idx].type) {
case AVMEDIA_TYPE_VIDEO:
sar = ist->st->sample_aspect_ratio.num ?
ist->st->sample_aspect_ratio :
ist->st->codec->sample_aspect_ratio;
snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->st->codec->width,
ist->st->codec->height, ist->st->codec->pix_fmt, 1, AV_TIME_BASE,
sar.num, sar.den);
filter = avfilter_get_by_name("buffer");
break;
case AVMEDIA_TYPE_AUDIO:
snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:"
"sample_fmt=%s:channel_layout=0x%"PRIx64,
ist->st->time_base.num, ist->st->time_base.den,
ist->st->codec->sample_rate,
av_get_sample_fmt_name(ist->st->codec->sample_fmt),
ist->st->codec->channel_layout);
filter = avfilter_get_by_name("abuffer");
break;
default:
av_assert0(0);
}
if ((ret = avfilter_graph_create_filter(&ifilter->filter,
avfilter_get_by_name("buffer"), cur->name,
filter, cur->name,
args, NULL, fg->graph)) < 0)
return ret;
if ((ret = avfilter_link(ifilter->filter, 0,
@ -4087,12 +4204,15 @@ static void init_output_filter(OutputFilter *ofilter, OptionsContext *o,
{
OutputStream *ost;
if (ofilter->out_tmp->filter_ctx->output_pads[ofilter->out_tmp->pad_idx].type != AVMEDIA_TYPE_VIDEO) {
av_log(NULL, AV_LOG_FATAL, "Only video filters are supported currently.\n");
switch (ofilter->out_tmp->filter_ctx->output_pads[ofilter->out_tmp->pad_idx].type) {
case AVMEDIA_TYPE_VIDEO: ost = new_video_stream(o, oc); break;
case AVMEDIA_TYPE_AUDIO: ost = new_audio_stream(o, oc); break;
default:
av_log(NULL, AV_LOG_FATAL, "Only video and audio filters are supported "
"currently.\n");
exit_program(1);
}
ost = new_video_stream(o, oc);
ost->source_index = -1;
ost->filter = ofilter;

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