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Code Issues Releases Activity

examples/filtering_audio: update to new API

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In particular, fix crash.
This commit is contained in:
Stefano Sabatini 2013-03-13 22:08:33 +01:00
parent f0da370a52
commit 9076a6a943
1 changed files with 12 additions and 14 deletions
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26
doc/examples/filtering_audio.c
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@ -150,11 +150,10 @@ static int init_filters(const char *filters_descr)
return 0;
}
static void print_samplesref(AVFilterBufferRef *samplesref)
static void print_frame(AVFrame *frame)
{
const AVFilterBufferRefAudioProps *props = samplesref->audio;
const int n = props->nb_samples * av_get_channel_layout_nb_channels(props->channel_layout);
const uint16_t *p = (uint16_t*)samplesref->data[0];
const int n = frame->nb_samples * av_get_channel_layout_nb_channels(av_frame_get_channel_layout(frame));
const uint16_t *p = (uint16_t*)frame->data[0];
const uint16_t *p_end = p + n;
while (p < p_end) {
@ -169,10 +168,11 @@ int main(int argc, char **argv)
{
int ret;
AVPacket packet;
AVFrame *frame = avcodec_alloc_frame();
AVFrame *frame = av_frame_alloc();
AVFrame *filt_frame = av_frame_alloc();
int got_frame;
if (!frame) {
if (!frame || !filt_frame) {
perror("Could not allocate frame");
exit(1);
}
@ -192,7 +192,6 @@ int main(int argc, char **argv)
/* read all packets */
while (1) {
AVFilterBufferRef *samplesref;
if ((ret = av_read_frame(fmt_ctx, &packet)) < 0)
break;
@ -207,22 +206,20 @@ int main(int argc, char **argv)
if (got_frame) {
/* push the audio data from decoded frame into the filtergraph */
if (av_buffersrc_add_frame(buffersrc_ctx, frame) < 0) {
if (av_buffersrc_add_frame_flags(buffersrc_ctx, frame, AV_BUFFERSRC_FLAG_KEEP_REF) < 0) {
av_log(NULL, AV_LOG_ERROR, "Error while feeding the audio filtergraph\n");
break;
}
/* pull filtered audio from the filtergraph */
while (1) {
ret = av_buffersink_get_buffer_ref(buffersink_ctx, &samplesref, 0);
ret = av_buffersink_get_frame(buffersink_ctx, filt_frame);
if(ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
break;
if(ret < 0)
goto end;
if (samplesref) {
print_samplesref(samplesref);
avfilter_unref_bufferp(&samplesref);
}
print_frame(filt_frame);
av_frame_unref(filt_frame);
}
}
}
@ -233,7 +230,8 @@ end:
if (dec_ctx)
avcodec_close(dec_ctx);
avformat_close_input(&fmt_ctx);
av_freep(&frame);
av_frame_free(&frame);
av_frame_free(&filt_frame);
if (ret < 0 && ret != AVERROR_EOF) {
char buf[1024];