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Leverage multi-core decoding in libVPX.

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This commit is contained in:
Pale Moon
2017-04-21 11:59:14 +02:00
committed by roytam1
parent 2dd01007a4
commit e2f0c7b883
1 changed files with 18 additions and 1 deletions
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dom/media/webm/SoftwareWebMVideoDecoder.cpp
+18 -1
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@@ -13,6 +13,7 @@
#include "TimeUnits.h"
#include "VorbisUtils.h"
#include "WebMBufferedParser.h"
#include "prsystem.h"
#include <algorithm>
@@ -55,6 +56,8 @@ SoftwareWebMVideoDecoder::Create(WebMReader* aReader)
nsresult
SoftwareWebMVideoDecoder::Init(unsigned int aWidth, unsigned int aHeight)
{
int decode_threads = 2; //Default to 2 threads for small sizes or VP8
vpx_codec_iface_t* dx = nullptr;
switch(mReader->GetVideoCodec()) {
case NESTEGG_CODEC_VP8:
@@ -62,9 +65,23 @@ SoftwareWebMVideoDecoder::Init(unsigned int aWidth, unsigned int aHeight)
break;
case NESTEGG_CODEC_VP9:
dx = vpx_codec_vp9_dx();
if (aWidth >= 2048) {
decode_threads = 8;
} else if (aWidth >= 1024) {
decode_threads = 4;
}
break;
}
if (!dx || vpx_codec_dec_init(&mVPX, dx, nullptr, 0)) {
// Never exceed the number of system cores!
decode_threads = std::min(decode_threads, PR_GetNumberOfProcessors());
vpx_codec_dec_cfg_t config;
config.threads = decode_threads;
config.w = aWidth;
config.h = aHeight;
if (!dx || vpx_codec_dec_init(&mVPX, dx, &config, 0)) {
return NS_ERROR_FAILURE;
}
return NS_OK;