lavfi/asplit: move asplit code to vf_split.c, and make it support N outputs

The move allows to share the init code already used by split.

1 files changed, 31 insertions, 1 deletions

diff --git a/libavfilter/vf_split.c b/libavfilter/vf_split.c
index e7e2dee90d..172781d7e1 100644
--- a/libavfilter/vf_split.c
+++ b/libavfilter/vf_split.c
@@ -24,6 +24,7 @@
  */
 
 #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 = !strcmp(ctx->name, "split") ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
         pad.name = av_strdup(name);
 
         avfilter_insert_outpad(ctx, i, &pad);
@@ -106,3 +107,32 @@ 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 }},
+};