[FFmpeg-cvslog] af_apad: add user setable packet_size

Michael Niedermayer git at videolan.org
Tue Dec 18 17:05:48 CET 2012


ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Tue Dec 18 17:01:33 2012 +0100| [b7e085a28893b5645d8f2b91e866014ab8de4a3b] | committer: Michael Niedermayer

af_apad: add user setable packet_size

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=b7e085a28893b5645d8f2b91e866014ab8de4a3b
---

 libavfilter/af_apad.c |   26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/libavfilter/af_apad.c b/libavfilter/af_apad.c
index 55c65e2..f587cfe 100644
--- a/libavfilter/af_apad.c
+++ b/libavfilter/af_apad.c
@@ -36,15 +36,38 @@
 #include "internal.h"
 
 typedef struct {
+    const AVClass *class;
     int64_t next_pts;
+
+    int packet_size;
 } APadContext;
 
+#define OFFSET(x) offsetof(APadContext, x)
+#define A AV_OPT_FLAG_AUDIO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+
+static const AVOption apad_options[] = {
+    { "packet_size", "set silence packet size",
+            OFFSET(packet_size), AV_OPT_TYPE_INT, { .i64 = 4096 }, 0, INT_MAX, A },
+    { NULL },
+};
+
+AVFILTER_DEFINE_CLASS(apad);
+
 static av_cold int init(AVFilterContext *ctx, const char *args)
 {
+    int ret;
     APadContext *apad = ctx->priv;
 
+    apad->class = &apad_class;
     apad->next_pts = AV_NOPTS_VALUE;
 
+    av_opt_set_defaults(apad);
+
+    if ((ret = av_opt_set_from_string(apad, args, NULL, "=", ":")) < 0)
+        return ret;
+
+    av_opt_free(apad);
+
     return 0;
 }
 
@@ -65,7 +88,7 @@ static int request_frame(AVFilterLink *outlink)
     ret = ff_request_frame(ctx->inputs[0]);
 
     if (ret == AVERROR_EOF) {
-        int n_out = 4096;
+        int n_out = apad->packet_size;
         AVFilterBufferRef *outsamplesref = ff_get_audio_buffer(outlink, AV_PERM_WRITE, n_out);
         if (!outsamplesref)
             return AVERROR(ENOMEM);
@@ -113,4 +136,5 @@ AVFilter avfilter_af_apad = {
     .priv_size     = sizeof(APadContext),
     .inputs        = apad_inputs,
     .outputs       = apad_outputs,
+    .priv_class    = &apad_class,
 };



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