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af_apad: add user setable packet_size

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-12-18 17:01:33 +01:00
parent 5eae7f8f35
commit b7e085a288
1 changed files with 25 additions and 1 deletions
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26
libavfilter/af_apad.c
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@ -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,
};