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Improve CPU decoder frame latency when rendering speed is less than decoding speed

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This commit is contained in:
Cameron Gutman 2014-11-25 02:04:51 -08:00
parent dc64bfeba2
commit fa85a0a0bd
1 changed files with 12 additions and 12 deletions
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24
app/src/main/jni/nv_avc_dec/nv_avc_dec.c
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@ -69,9 +69,6 @@ int nv_avc_init(int width, int height, int perf_lvl, int thread_count) {
return -1; return -1;
} }
// Show frames even before a reference frame
decoder_ctx->flags2 |= CODEC_FLAG2_SHOW_ALL;
if (perf_lvl & DISABLE_LOOP_FILTER) { if (perf_lvl & DISABLE_LOOP_FILTER) {
// Skip the loop filter for performance reasons // Skip the loop filter for performance reasons
decoder_ctx->skip_loop_filter = AVDISCARD_ALL; decoder_ctx->skip_loop_filter = AVDISCARD_ALL;
@ -370,17 +367,20 @@ int nv_avc_decode(unsigned char* indata, int inlen) {
// Only copy the picture at the end of decoding the packet // Only copy the picture at the end of decoding the packet
if (got_pic) { if (got_pic) {
// Clone the current decode frame outside of the mutex
AVFrame* new_frame = av_frame_clone(dec_frame);
AVFrame* old_frame;
// Swap it in under lock
pthread_mutex_lock(&mutex); pthread_mutex_lock(&mutex);
old_frame = yuv_frame;
// Only clone this frame if the last frame was taken. yuv_frame = new_frame;
// This saves on extra copies for frames that don't get
// rendered.
if (yuv_frame == NULL) {
// Clone a new frame
yuv_frame = av_frame_clone(dec_frame);
}
pthread_mutex_unlock(&mutex); pthread_mutex_unlock(&mutex);
// Free the old frame outside of the mutex
if (old_frame != NULL) {
av_frame_free(&old_frame);
}
} }
return err < 0 ? err : 0; return err < 0 ? err : 0;