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Set av1 speed from resolution.

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Use speed 6 for better quality for low resolution, speed 8 for HD for better speed.
This will better balance speed and quality.

Change-Id: I3d8dbd45533471ce58d53c1ac26f92c7b1106259
Bug: None
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/175281
Reviewed-by: Marco Paniconi <marpan@webrtc.org>
Reviewed-by: Danil Chapovalov <danilchap@webrtc.org>
Commit-Queue: Jerome Jiang <jianj@google.com>
Cr-Commit-Position: refs/heads/master@{#31336}
This commit is contained in:
Jerome Jiang
2020-05-19 16:24:10 -07:00
committed by Commit Bot
parent 2913adebaf
commit 3cc1a6509b
1 changed files with 15 additions and 2 deletions
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17
modules/video_coding/codecs/av1/libaom_av1_encoder.cc
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@ -39,7 +39,6 @@ namespace {
// Encoder configuration parameters
constexpr int kQpMax = 56;
constexpr int kQpMin = 10;
constexpr int kDefaultEncSpeed = 7; // Use values 6, 7, or 8 for RTC.
constexpr int kUsageProfile = 1; // 0 = good quality; 1 = real-time.
constexpr int kMinQindex = 58; // Min qindex threshold for QP scaling.
constexpr int kMaxQindex = 180; // Max qindex threshold for QP scaling.
@ -48,6 +47,19 @@ constexpr int kLagInFrames = 0; // No look ahead.
constexpr int kRtpTicksPerSecond = 90000;
constexpr float kMinimumFrameRate = 1.0;
// Only positive speeds, range for real-time coding currently is: 6 - 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 <= 320 * 180)
return 6;
else if (width * height >= 1280 * 720)
return 8;
else
return 7;
}
class LibaomAv1Encoder final : public VideoEncoder {
public:
explicit LibaomAv1Encoder(
@ -189,7 +201,8 @@ int LibaomAv1Encoder::InitEncode(const VideoCodec* codec_settings,
inited_ = true;
// Set control parameters
ret = aom_codec_control(&ctx_, AOME_SET_CPUUSED, kDefaultEncSpeed);
ret = aom_codec_control(&ctx_, AOME_SET_CPUUSED,
GetCpuSpeed(cfg_.g_w, cfg_.g_h));
if (ret != AOM_CODEC_OK) {
RTC_LOG(LS_WARNING) << "LibaomAv1Encoder::EncodeInit returned " << ret
<< " on control AV1E_SET_CPUUSED.";