From b7e085a28893b5645d8f2b91e866014ab8de4a3b Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Tue, 18 Dec 2012 17:01:33 +0100
Subject: [PATCH] af_apad: add user setable packet_size
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
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 55c65e20156..f587cfe2cea 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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