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Add fallback histograms for VideoDecoderSoftwareFallbackWrapper

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Track the number of samples that are decoded until a fallback to
software decoder happens.

Bug: chromium:1061376
Change-Id: Ida3ae94034ec83a6d28001cb7be343b8b99b99c3
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/170468
Commit-Queue: Johannes Kron <kron@webrtc.org>
Reviewed-by: Karl Wiberg <kwiberg@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30814}
This commit is contained in:
Johannes Kron 2020-03-17 10:01:43 +01:00 committed by Commit Bot
parent e7112ba7b3
commit 570330361a
2 changed files with 45 additions and 1 deletions
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1
api/video_codecs/BUILD.gn
View File

@ -143,6 +143,7 @@ rtc_library("rtc_software_fallback_wrappers") {
"../../rtc_base:rtc_base_approved",
"../../rtc_base/system:rtc_export",
"../../system_wrappers:field_trial",
"../../system_wrappers:metrics",
"../video:encoded_image",
"../video:video_bitrate_allocation",
"../video:video_frame",

45
api/video_codecs/video_decoder_software_fallback_wrapper.cc
View File

@ -24,6 +24,7 @@
#include "rtc_base/logging.h"
#include "rtc_base/trace_event.h"
#include "system_wrappers/include/field_trial.h"
#include "system_wrappers/include/metrics.h"
namespace webrtc {
@ -53,6 +54,8 @@ class VideoDecoderSoftwareFallbackWrapper final : public VideoDecoder {
private:
bool InitFallbackDecoder();
void UpdateFallbackDecoderHistograms();
int32_t InitHwDecoder();
VideoDecoder& active_decoder() const;
@ -70,6 +73,7 @@ class VideoDecoderSoftwareFallbackWrapper final : public VideoDecoder {
const std::unique_ptr<VideoDecoder> fallback_decoder_;
const std::string fallback_implementation_name_;
DecodedImageCallback* callback_;
int32_t hw_decoded_frames_since_last_fallback_;
};
VideoDecoderSoftwareFallbackWrapper::VideoDecoderSoftwareFallbackWrapper(
@ -81,7 +85,8 @@ VideoDecoderSoftwareFallbackWrapper::VideoDecoderSoftwareFallbackWrapper(
fallback_implementation_name_(
std::string(fallback_decoder_->ImplementationName()) +
" (fallback from: " + hw_decoder_->ImplementationName() + ")"),
callback_(nullptr) {}
callback_(nullptr),
hw_decoded_frames_since_last_fallback_(0) {}
VideoDecoderSoftwareFallbackWrapper::~VideoDecoderSoftwareFallbackWrapper() =
default;
@ -134,6 +139,8 @@ bool VideoDecoderSoftwareFallbackWrapper::InitFallbackDecoder() {
return false;
}
UpdateFallbackDecoderHistograms();
if (decoder_type_ == DecoderType::kHardware) {
hw_decoder_->Release();
}
@ -144,6 +151,39 @@ bool VideoDecoderSoftwareFallbackWrapper::InitFallbackDecoder() {
return true;
}
void VideoDecoderSoftwareFallbackWrapper::UpdateFallbackDecoderHistograms() {
const std::string kFallbackHistogramsUmaPrefix =
"WebRTC.Video.HardwareDecodedFramesBetweenSoftwareFallbacks.";
// Each histogram needs its own code path for this to work otherwise the
// histogram names will be mixed up by the optimization that takes place.
switch (codec_settings_.codecType) {
case kVideoCodecGeneric:
RTC_HISTOGRAM_COUNTS_100000(kFallbackHistogramsUmaPrefix + "Generic",
hw_decoded_frames_since_last_fallback_);
break;
case kVideoCodecVP8:
RTC_HISTOGRAM_COUNTS_100000(kFallbackHistogramsUmaPrefix + "Vp8",
hw_decoded_frames_since_last_fallback_);
break;
case kVideoCodecVP9:
RTC_HISTOGRAM_COUNTS_100000(kFallbackHistogramsUmaPrefix + "Vp9",
hw_decoded_frames_since_last_fallback_);
break;
case kVideoCodecAV1:
RTC_HISTOGRAM_COUNTS_100000(kFallbackHistogramsUmaPrefix + "Av1",
hw_decoded_frames_since_last_fallback_);
break;
case kVideoCodecH264:
RTC_HISTOGRAM_COUNTS_100000(kFallbackHistogramsUmaPrefix + "H264",
hw_decoded_frames_since_last_fallback_);
break;
case kVideoCodecMultiplex:
RTC_HISTOGRAM_COUNTS_100000(kFallbackHistogramsUmaPrefix + "Multiplex",
hw_decoded_frames_since_last_fallback_);
break;
}
}
int32_t VideoDecoderSoftwareFallbackWrapper::Decode(
const EncodedImage& input_image,
bool missing_frames,
@ -156,6 +196,9 @@ int32_t VideoDecoderSoftwareFallbackWrapper::Decode(
int32_t ret = WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE;
ret = hw_decoder_->Decode(input_image, missing_frames, render_time_ms);
if (ret != WEBRTC_VIDEO_CODEC_FALLBACK_SOFTWARE) {
if (ret == WEBRTC_VIDEO_CODEC_OK) {
++hw_decoded_frames_since_last_fallback_;
}
return ret;
}