Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

avconv: add support for audio in complex filtergraphs.

Browse Source
pull/30/merge
Anton Khirnov 13 years ago
parent 90c9edba58
commit 0ad26cdf24
1 changed files with 133 additions and 13 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 146
      avconv.c

146
avconv.c
Unescape View File

@ -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 :
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);
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;

Write Preview
Loading…
Cancel
Save