231 строка
7.1 KiB
C++
231 строка
7.1 KiB
C++
/*
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Copyright (c) 2012 The WebM project authors. All Rights Reserved.
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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 = 8;
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const int kMaxDroppableFrames = 8;
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class ErrorResilienceTest : public ::libvpx_test::EncoderTest,
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public ::libvpx_test::CodecTestWithParam<libvpx_test::TestMode> {
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protected:
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ErrorResilienceTest() : 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 ~ErrorResilienceTest() {}
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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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virtual void PreEncodeFrameHook(libvpx_test::VideoSource *video) {
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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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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] == nframes_) {
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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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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(ErrorResilienceTest, 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 = 25;
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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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TEST_P(ErrorResilienceTest, 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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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 ON.
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cfg_.g_error_resilient = 1;
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// Set an arbitrary set of error frames same as droppable frames
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unsigned int num_droppable_frames = 2;
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unsigned int droppable_frame_list[] = {5, 16};
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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 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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VP8_INSTANTIATE_TEST_CASE(ErrorResilienceTest, ONE_PASS_TEST_MODES);
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VP9_INSTANTIATE_TEST_CASE(ErrorResilienceTest, ONE_PASS_TEST_MODES);
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} // namespace
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