323 строки
11 KiB
C++
323 строки
11 KiB
C++
/*
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* Copyright (c) 2013 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "third_party/googletest/src/include/gtest/gtest.h"
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#include "test/codec_factory.h"
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#include "test/encode_test_driver.h"
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#include "test/i420_video_source.h"
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#include "test/util.h"
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namespace {
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const int kMaxErrorFrames = 12;
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const int kMaxDroppableFrames = 12;
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class ErrorResilienceTestLarge : public ::libvpx_test::EncoderTest,
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public ::libvpx_test::CodecTestWithParam<libvpx_test::TestMode> {
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protected:
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ErrorResilienceTestLarge()
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: EncoderTest(GET_PARAM(0)),
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psnr_(0.0),
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nframes_(0),
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mismatch_psnr_(0.0),
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mismatch_nframes_(0),
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encoding_mode_(GET_PARAM(1)) {
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Reset();
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}
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virtual ~ErrorResilienceTestLarge() {}
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void Reset() {
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error_nframes_ = 0;
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droppable_nframes_ = 0;
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}
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virtual void SetUp() {
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InitializeConfig();
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SetMode(encoding_mode_);
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}
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virtual void BeginPassHook(unsigned int /*pass*/) {
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psnr_ = 0.0;
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nframes_ = 0;
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mismatch_psnr_ = 0.0;
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mismatch_nframes_ = 0;
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}
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virtual void PSNRPktHook(const vpx_codec_cx_pkt_t *pkt) {
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psnr_ += pkt->data.psnr.psnr[0];
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nframes_++;
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}
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//
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// Frame flags and layer id for temporal layers.
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// For two layers, test pattern is:
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// 1 3
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// 0 2 .....
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// LAST is updated on base/layer 0, GOLDEN updated on layer 1.
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int SetFrameFlags(int frame_num, int num_temp_layers) {
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int frame_flags = 0;
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if (num_temp_layers == 2) {
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if (frame_num % 2 == 0) {
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// Layer 0: predict from L and ARF, update L.
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frame_flags = VP8_EFLAG_NO_REF_GF |
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VP8_EFLAG_NO_UPD_GF |
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VP8_EFLAG_NO_UPD_ARF;
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} else {
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// Layer 1: predict from L, GF, and ARF, and update GF.
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frame_flags = VP8_EFLAG_NO_UPD_ARF |
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VP8_EFLAG_NO_UPD_LAST;
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}
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}
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return frame_flags;
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}
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virtual void PreEncodeFrameHook(libvpx_test::VideoSource *video,
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::libvpx_test::Encoder *encoder) {
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frame_flags_ &= ~(VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_UPD_GF |
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VP8_EFLAG_NO_UPD_ARF);
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// For temporal layer case.
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if (cfg_.ts_number_layers > 1) {
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frame_flags_ = SetFrameFlags(video->frame(), cfg_.ts_number_layers);
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for (unsigned int i = 0; i < droppable_nframes_; ++i) {
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if (droppable_frames_[i] == video->frame()) {
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std::cout << "Encoding droppable frame: "
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<< droppable_frames_[i] << "\n";
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}
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}
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} else {
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if (droppable_nframes_ > 0 &&
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(cfg_.g_pass == VPX_RC_LAST_PASS || cfg_.g_pass == VPX_RC_ONE_PASS)) {
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for (unsigned int i = 0; i < droppable_nframes_; ++i) {
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if (droppable_frames_[i] == video->frame()) {
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std::cout << "Encoding droppable frame: "
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<< droppable_frames_[i] << "\n";
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frame_flags_ |= (VP8_EFLAG_NO_UPD_LAST |
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VP8_EFLAG_NO_UPD_GF |
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VP8_EFLAG_NO_UPD_ARF);
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return;
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}
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}
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}
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}
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}
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double GetAveragePsnr() const {
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if (nframes_)
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return psnr_ / nframes_;
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return 0.0;
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}
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double GetAverageMismatchPsnr() const {
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if (mismatch_nframes_)
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return mismatch_psnr_ / mismatch_nframes_;
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return 0.0;
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}
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virtual bool DoDecode() const {
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if (error_nframes_ > 0 &&
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(cfg_.g_pass == VPX_RC_LAST_PASS || cfg_.g_pass == VPX_RC_ONE_PASS)) {
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for (unsigned int i = 0; i < error_nframes_; ++i) {
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if (error_frames_[i] == nframes_ - 1) {
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std::cout << " Skipping decoding frame: "
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<< error_frames_[i] << "\n";
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return 0;
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}
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}
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}
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return 1;
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}
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virtual void MismatchHook(const vpx_image_t *img1,
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const vpx_image_t *img2) {
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double mismatch_psnr = compute_psnr(img1, img2);
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mismatch_psnr_ += mismatch_psnr;
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++mismatch_nframes_;
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// std::cout << "Mismatch frame psnr: " << mismatch_psnr << "\n";
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}
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void SetErrorFrames(int num, unsigned int *list) {
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if (num > kMaxErrorFrames)
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num = kMaxErrorFrames;
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else if (num < 0)
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num = 0;
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error_nframes_ = num;
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for (unsigned int i = 0; i < error_nframes_; ++i)
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error_frames_[i] = list[i];
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}
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void SetDroppableFrames(int num, unsigned int *list) {
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if (num > kMaxDroppableFrames)
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num = kMaxDroppableFrames;
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else if (num < 0)
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num = 0;
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droppable_nframes_ = num;
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for (unsigned int i = 0; i < droppable_nframes_; ++i)
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droppable_frames_[i] = list[i];
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}
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unsigned int GetMismatchFrames() {
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return mismatch_nframes_;
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}
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private:
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double psnr_;
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unsigned int nframes_;
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unsigned int error_nframes_;
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unsigned int droppable_nframes_;
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double mismatch_psnr_;
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unsigned int mismatch_nframes_;
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unsigned int error_frames_[kMaxErrorFrames];
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unsigned int droppable_frames_[kMaxDroppableFrames];
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libvpx_test::TestMode encoding_mode_;
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};
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TEST_P(ErrorResilienceTestLarge, OnVersusOff) {
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const vpx_rational timebase = { 33333333, 1000000000 };
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cfg_.g_timebase = timebase;
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cfg_.rc_target_bitrate = 2000;
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cfg_.g_lag_in_frames = 10;
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init_flags_ = VPX_CODEC_USE_PSNR;
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libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
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timebase.den, timebase.num, 0, 30);
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// Error resilient mode OFF.
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cfg_.g_error_resilient = 0;
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ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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const double psnr_resilience_off = GetAveragePsnr();
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EXPECT_GT(psnr_resilience_off, 25.0);
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// Error resilient mode ON.
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cfg_.g_error_resilient = 1;
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ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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const double psnr_resilience_on = GetAveragePsnr();
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EXPECT_GT(psnr_resilience_on, 25.0);
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// Test that turning on error resilient mode hurts by 10% at most.
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if (psnr_resilience_off > 0.0) {
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const double psnr_ratio = psnr_resilience_on / psnr_resilience_off;
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EXPECT_GE(psnr_ratio, 0.9);
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EXPECT_LE(psnr_ratio, 1.1);
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}
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}
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// Check for successful decoding and no encoder/decoder mismatch
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// if we lose (i.e., drop before decoding) a set of droppable
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// frames (i.e., frames that don't update any reference buffers).
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// Check both isolated and consecutive loss.
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TEST_P(ErrorResilienceTestLarge, DropFramesWithoutRecovery) {
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const vpx_rational timebase = { 33333333, 1000000000 };
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cfg_.g_timebase = timebase;
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cfg_.rc_target_bitrate = 500;
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// FIXME(debargha): Fix this to work for any lag.
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// Currently this test only works for lag = 0
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cfg_.g_lag_in_frames = 0;
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init_flags_ = VPX_CODEC_USE_PSNR;
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libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
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timebase.den, timebase.num, 0, 40);
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// Error resilient mode ON.
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cfg_.g_error_resilient = 1;
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cfg_.kf_mode = VPX_KF_DISABLED;
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// Set an arbitrary set of error frames same as droppable frames.
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// In addition to isolated loss/drop, add a long consecutive series
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// (of size 9) of dropped frames.
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unsigned int num_droppable_frames = 11;
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unsigned int droppable_frame_list[] = {5, 16, 22, 23, 24, 25, 26, 27, 28,
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29, 30};
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SetDroppableFrames(num_droppable_frames, droppable_frame_list);
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SetErrorFrames(num_droppable_frames, droppable_frame_list);
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ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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// Test that no mismatches have been found
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std::cout << " Mismatch frames: "
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<< GetMismatchFrames() << "\n";
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EXPECT_EQ(GetMismatchFrames(), (unsigned int) 0);
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// Reset previously set of error/droppable frames.
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Reset();
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#if 0
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// TODO(jkoleszar): This test is disabled for the time being as too
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// sensitive. It's not clear how to set a reasonable threshold for
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// this behavior.
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// Now set an arbitrary set of error frames that are non-droppable
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unsigned int num_error_frames = 3;
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unsigned int error_frame_list[] = {3, 10, 20};
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SetErrorFrames(num_error_frames, error_frame_list);
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ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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// Test that dropping an arbitrary set of inter frames does not hurt too much
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// Note the Average Mismatch PSNR is the average of the PSNR between
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// decoded frame and encoder's version of the same frame for all frames
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// with mismatch.
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const double psnr_resilience_mismatch = GetAverageMismatchPsnr();
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std::cout << " Mismatch PSNR: "
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<< psnr_resilience_mismatch << "\n";
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EXPECT_GT(psnr_resilience_mismatch, 20.0);
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#endif
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}
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// Check for successful decoding and no encoder/decoder mismatch
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// if we lose (i.e., drop before decoding) the enhancement layer frames for a
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// two layer temporal pattern. The base layer does not predict from the top
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// layer, so successful decoding is expected.
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TEST_P(ErrorResilienceTestLarge, 2LayersDropEnhancement) {
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const vpx_rational timebase = { 33333333, 1000000000 };
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cfg_.g_timebase = timebase;
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cfg_.rc_target_bitrate = 500;
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cfg_.g_lag_in_frames = 0;
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cfg_.rc_end_usage = VPX_CBR;
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// 2 Temporal layers, no spatial layers, CBR mode.
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cfg_.ss_number_layers = 1;
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cfg_.ts_number_layers = 2;
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cfg_.ts_rate_decimator[0] = 2;
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cfg_.ts_rate_decimator[1] = 1;
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cfg_.ts_periodicity = 2;
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cfg_.ts_target_bitrate[0] = 60 * cfg_.rc_target_bitrate / 100;
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cfg_.ts_target_bitrate[1] = cfg_.rc_target_bitrate;
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init_flags_ = VPX_CODEC_USE_PSNR;
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libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
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timebase.den, timebase.num, 0, 40);
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// Error resilient mode ON.
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cfg_.g_error_resilient = 1;
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cfg_.kf_mode = VPX_KF_DISABLED;
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// The odd frames are the enhancement layer for 2 layer pattern, so set
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// those frames as droppable. Drop the last 7 frames.
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unsigned int num_droppable_frames = 7;
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unsigned int droppable_frame_list[] = {27, 29, 31, 33, 35, 37, 39};
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SetDroppableFrames(num_droppable_frames, droppable_frame_list);
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SetErrorFrames(num_droppable_frames, droppable_frame_list);
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ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
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// Test that no mismatches have been found
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std::cout << " Mismatch frames: "
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<< GetMismatchFrames() << "\n";
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EXPECT_EQ(GetMismatchFrames(), (unsigned int) 0);
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// Reset previously set of error/droppable frames.
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Reset();
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}
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VP8_INSTANTIATE_TEST_CASE(ErrorResilienceTestLarge, ONE_PASS_TEST_MODES);
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VP9_INSTANTIATE_TEST_CASE(ErrorResilienceTestLarge, ONE_PASS_TEST_MODES);
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} // namespace
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