From afeb3590fc5ff01d43b1a1be9df8fac64431ff9e Mon Sep 17 00:00:00 2001 From: Justin Ruggles Date: Mon, 21 May 2012 14:03:42 -0400 Subject: lavfi: add an audio split filter Based on current version of the asplit filter in FFmpeg written by Stefano Sabatini and others. --- libavfilter/split.c | 30 ++++++++++++++++++++++++++++-- 1 file changed, 28 insertions(+), 2 deletions(-) (limited to 'libavfilter/split.c') diff --git a/libavfilter/split.c b/libavfilter/split.c index da6b3ff320..83ad765081 100644 --- a/libavfilter/split.c +++ b/libavfilter/split.c @@ -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 }}, +}; -- cgit v1.2.3