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Boost software vp8 decoder performance using multi-threaded decoding if possible

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Change-Id: I7258c7d0cf91aa7c62444d03ed8bce96fb23d8ef
related-to-bug: 4539653
This commit is contained in:
James Dong
2011-06-17 16:50:13 -07:00
parent 9c8e735817
commit c03f08e5c7
1 changed files with 17 additions and 1 deletions
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18
media/libstagefright/codecs/on2/dec/SoftVPX.cpp
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@@ -117,11 +117,27 @@ void SoftVPX::initPorts() {
addPort(def);
}
static int GetCPUCoreCount() {
int cpuCoreCount = 1;
#if defined(_SC_NPROCESSORS_ONLN)
cpuCoreCount = sysconf(_SC_NPROCESSORS_ONLN);
#else
// _SC_NPROC_ONLN must be defined...
cpuCoreCount = sysconf(_SC_NPROC_ONLN);
#endif
CHECK(cpuCoreCount >= 1);
LOGV("Number of CPU cores: %d", cpuCoreCount);
return cpuCoreCount;
}
status_t SoftVPX::initDecoder() {
mCtx = new vpx_codec_ctx_t;
vpx_codec_err_t vpx_err;
vpx_codec_dec_cfg_t cfg;
memset(&cfg, 0, sizeof(vpx_codec_dec_cfg_t));
cfg.threads = GetCPUCoreCount();
if ((vpx_err = vpx_codec_dec_init(
(vpx_codec_ctx_t *)mCtx, &vpx_codec_vp8_dx_algo, NULL, 0))) {
(vpx_codec_ctx_t *)mCtx, &vpx_codec_vp8_dx_algo, &cfg, 0))) {
LOGE("on2 decoder failed to initialize. (%d)", vpx_err);
return UNKNOWN_ERROR;
}