breeze/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2026-02-04 14:30:55 +08:00
Code Issues Packages Projects Releases Wiki Activity

lavfi: add an audio split filter

Browse Source 
Based on current version of the asplit filter in FFmpeg written by
Stefano Sabatini and others.
This commit is contained in:
Justin Ruggles
2012-05-21 14:03:42 -04:00
parent cc30080b3f
commit afeb3590fc
6 changed files with 45 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
libavfilter/split.c
View File

@@ -20,10 +20,11 @@
/**
* @file
* Video splitter
* audio and video splitter
*/
#include "avfilter.h"
#include "audio.h"
static int split_init(AVFilterContext *ctx, const char *args, void *opaque)
{
@@ -43,7 +44,7 @@ static int split_init(AVFilterContext *ctx, const char *args, void *opaque)
AVFilterPad pad = { 0 };
snprintf(name, sizeof(name), "output%d", i);
pad.type = AVMEDIA_TYPE_VIDEO;
pad.type = ctx->filter->inputs[0].type;
pad.name = av_strdup(name);
avfilter_insert_outpad(ctx, i, &pad);
@@ -106,3 +107,28 @@ AVFilter avfilter_vf_split = {
{ .name = NULL}},
.outputs = (AVFilterPad[]) {{ .name = NULL}},
};
static void filter_samples(AVFilterLink *inlink, AVFilterBufferRef *samplesref)
{
AVFilterContext *ctx = inlink->dst;
int i;
for (i = 0; i < ctx->output_count; i++)
ff_filter_samples(inlink->dst->outputs[i],
avfilter_ref_buffer(samplesref, ~AV_PERM_WRITE));
}
AVFilter avfilter_af_asplit = {
.name = "asplit",
.description = NULL_IF_CONFIG_SMALL("Pass on the audio input to N audio outputs."),
.init = split_init,
.uninit = split_uninit,
.inputs = (const AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_AUDIO,
.get_audio_buffer = ff_null_get_audio_buffer,
.filter_samples = filter_samples },
{ .name = NULL }},
.outputs = (const AVFilterPad[]) {{ .name = NULL }},
};