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avfilter/af_compand: silence "maybe uninitialized" warnings

if channels is 0 it actually would be uninitialized, thus an assert with comment is added

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-09-07 03:07:34 +02:00
parent 797762fcf3
commit 64c54f8333

View File

@ -22,6 +22,7 @@
* *
*/ */
#include "libavutil/avassert.h"
#include "libavutil/avstring.h" #include "libavutil/avstring.h"
#include "libavutil/opt.h" #include "libavutil/opt.h"
#include "libavutil/samplefmt.h" #include "libavutil/samplefmt.h"
@ -214,9 +215,11 @@ static int compand_delay(AVFilterContext *ctx, AVFrame *frame)
AVFilterLink *inlink = ctx->inputs[0]; AVFilterLink *inlink = ctx->inputs[0];
const int channels = inlink->channels; const int channels = inlink->channels;
const int nb_samples = frame->nb_samples; const int nb_samples = frame->nb_samples;
int chan, i, dindex, oindex, count; int chan, i, av_uninit(dindex), oindex, av_uninit(count);
AVFrame *out_frame = NULL; AVFrame *out_frame = NULL;
av_assert1(channels > 0); /* would corrupt delay_count and delay_index */
for (chan = 0; chan < channels; chan++) { for (chan = 0; chan < channels; chan++) {
const double *src = (double *)frame->data[chan]; const double *src = (double *)frame->data[chan];
double *dbuf = (double *)s->delayptrs[chan]; double *dbuf = (double *)s->delayptrs[chan];