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timefilter: Handle memory allocation failure 

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
This commit is contained in:
Derek Buitenhuis 2013-10-22 18:46:37 +01:00
parent e789130522
commit 327c439f81
3 changed files with 15 additions and 1 deletions
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4
libavdevice/jack_audio.c
View File

@ -190,6 +190,10 @@ static int start_jack(AVFormatContext *context)
period = (double) self->buffer_size / self->sample_rate;
o = 2 * M_PI * 1.5 * period; /// bandwidth: 1.5Hz
self->timefilter = ff_timefilter_new (1.0 / self->sample_rate, sqrt(2 * o), o * o);
if (!self->timefilter) {
jack_client_close(self->client);
return AVERROR(ENOMEM);
}
/* Create FIFO buffers */
self->filled_pkts = av_fifo_alloc(FIFO_PACKETS_NUM * sizeof(AVPacket));

10
libavdevice/timefilter.c
View File

@ -41,7 +41,11 @@ TimeFilter *ff_timefilter_new(double clock_period,
double feedback2_factor,
double feedback3_factor)
{
TimeFilter *self = av_mallocz(sizeof(TimeFilter));
TimeFilter *self = av_mallocz(sizeof(TimeFilter));
if (!self)
return NULL;
self->clock_period = clock_period;
self->feedback2_factor = feedback2_factor;
self->feedback3_factor = feedback3_factor;
@ -105,6 +109,10 @@ int main(void)
for (par1 = bestpar1 * 0.8; par1 <= bestpar1 * 1.21; par1 += bestpar1 * 0.05) {
double error = 0;
TimeFilter *tf = ff_timefilter_new(1, par0, par1);
if (!tf) {
printf("Could not allocate memory for timefilter.\n");
exit(1);
}
for (i = 0; i < SAMPLES; i++) {
double filtered;
filtered = ff_timefilter_update(tf, samples[i], 1);

2
libavdevice/timefilter.h
View File

@ -56,6 +56,8 @@ typedef struct TimeFilter TimeFilter;
* @param clock_period period of the hardware clock in seconds
* (for example 1.0/44100)
*
* @return a pointer to a TimeFilter struct, or NULL on error
*
* For more details about these parameters and background concepts please see:
* http://www.kokkinizita.net/papers/usingdll.pdf
*/