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VP9 wrapper: Adjust speed setting.

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Use lower speed setting for smaller resolutions.

R=stefan@webrtc.org
TBR=stefan@webrtc.org

BUG=

Review URL: https://codereview.webrtc.org/1192173003.

Cr-Commit-Position: refs/heads/master@{#9549}
This commit is contained in:
Marco
2015-07-07 14:40:38 -07:00
parent d436298332
commit 6e89b25143
1 changed files with 12 additions and 6 deletions
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18
webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
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@ -42,6 +42,17 @@ static void WrappedI420BufferNoLongerUsedCb(
namespace webrtc {
// Only positive speeds, range for real-time coding currently is: 5 - 8.
// Lower means slower/better quality, higher means fastest/lower quality.
int GetCpuSpeed(int width, int height) {
// For smaller resolutions, use lower speed setting (get some coding gain at
// the cost of increased encoding complexity).
if (width * height <= 352 * 288)
return 5;
else
return 7;
}
VP9Encoder* VP9Encoder::Create() {
return new VP9EncoderImpl();
}
@ -194,11 +205,11 @@ int VP9EncoderImpl::InitEncode(const VideoCodec* inst,
} else {
config_->kf_mode = VPX_KF_DISABLED;
}
// Determine number of threads based on the image size and #cores.
config_->g_threads = NumberOfThreads(config_->g_w,
config_->g_h,
number_of_cores);
cpu_speed_ = GetCpuSpeed(config_->g_w, config_->g_h);
return InitAndSetControlSettings(inst);
}
@ -221,11 +232,6 @@ int VP9EncoderImpl::InitAndSetControlSettings(const VideoCodec* inst) {
if (vpx_codec_enc_init(encoder_, vpx_codec_vp9_cx(), config_, 0)) {
return WEBRTC_VIDEO_CODEC_UNINITIALIZED;
}
// Only positive speeds, currently: 0 - 8.
// O means slowest/best quality, 8 means fastest/lower quality.
cpu_speed_ = 7;
// Note: some of these codec controls still use "VP8" in the control name.
// TODO(marpan): Update this in the next/future libvpx version.
vpx_codec_control(encoder_, VP8E_SET_CPUUSED, cpu_speed_);
vpx_codec_control(encoder_, VP8E_SET_MAX_INTRA_BITRATE_PCT,
rc_max_intra_target_);