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/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
#include "test/codec_factory.h"
#include "test/encode_test_driver.h"
#include "test/i420_video_source.h"
#include "test/util.h"
namespace {
const int kMaxErrorFrames = 12;
const int kMaxDroppableFrames = 12;
class ErrorResilienceTestLarge
: public ::libaom_test::EncoderTest,
public ::libaom_test::CodecTestWithParam<libaom_test::TestMode> {
protected:
ErrorResilienceTestLarge()
: EncoderTest(GET_PARAM(0)), psnr_(0.0), nframes_(0), mismatch_psnr_(0.0),
mismatch_nframes_(0), encoding_mode_(GET_PARAM(1)) {
Reset();
}
virtual ~ErrorResilienceTestLarge() {}
void Reset() {
error_nframes_ = 0;
droppable_nframes_ = 0;
pattern_switch_ = 0;
}
virtual void SetUp() {
InitializeConfig();
SetMode(encoding_mode_);
}
virtual void BeginPassHook(unsigned int /*pass*/) {
psnr_ = 0.0;
nframes_ = 0;
mismatch_psnr_ = 0.0;
mismatch_nframes_ = 0;
}
virtual void PSNRPktHook(const aom_codec_cx_pkt_t *pkt) {
psnr_ += pkt->data.psnr.psnr[0];
nframes_++;
}
virtual void PreEncodeFrameHook(libaom_test::VideoSource *video) {
frame_flags_ &=
~(AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF | AOM_EFLAG_NO_UPD_ARF);
if (droppable_nframes_ > 0 &&
(cfg_.g_pass == AOM_RC_LAST_PASS || cfg_.g_pass == AOM_RC_ONE_PASS)) {
for (unsigned int i = 0; i < droppable_nframes_; ++i) {
if (droppable_frames_[i] == video->frame()) {
std::cout << "Encoding droppable frame: " << droppable_frames_[i]
<< "\n";
frame_flags_ |= (AOM_EFLAG_NO_UPD_LAST | AOM_EFLAG_NO_UPD_GF |
AOM_EFLAG_NO_UPD_ARF);
return;
}
}
}
}
double GetAveragePsnr() const {
if (nframes_) return psnr_ / nframes_;
return 0.0;
}
double GetAverageMismatchPsnr() const {
if (mismatch_nframes_) return mismatch_psnr_ / mismatch_nframes_;
return 0.0;
}
virtual bool DoDecode() const {
if (error_nframes_ > 0 &&
(cfg_.g_pass == AOM_RC_LAST_PASS || cfg_.g_pass == AOM_RC_ONE_PASS)) {
for (unsigned int i = 0; i < error_nframes_; ++i) {
if (error_frames_[i] == nframes_ - 1) {
std::cout << " Skipping decoding frame: "
<< error_frames_[i] << "\n";
return 0;
}
}
}
return 1;
}
virtual void MismatchHook(const aom_image_t *img1, const aom_image_t *img2) {
double mismatch_psnr = compute_psnr(img1, img2);
mismatch_psnr_ += mismatch_psnr;
++mismatch_nframes_;
// std::cout << "Mismatch frame psnr: " << mismatch_psnr << "\n";
::libaom_test::EncoderTest::MismatchHook(img1, img2);
}
void SetErrorFrames(int num, unsigned int *list) {
if (num > kMaxErrorFrames)
num = kMaxErrorFrames;
else if (num < 0)
num = 0;
error_nframes_ = num;
for (unsigned int i = 0; i < error_nframes_; ++i)
error_frames_[i] = list[i];
}
void SetDroppableFrames(int num, unsigned int *list) {
if (num > kMaxDroppableFrames)
num = kMaxDroppableFrames;
else if (num < 0)
num = 0;
droppable_nframes_ = num;
for (unsigned int i = 0; i < droppable_nframes_; ++i)
droppable_frames_[i] = list[i];
}
unsigned int GetMismatchFrames() { return mismatch_nframes_; }
void SetPatternSwitch(int frame_switch) { pattern_switch_ = frame_switch; }
private:
double psnr_;
unsigned int nframes_;
unsigned int error_nframes_;
unsigned int droppable_nframes_;
unsigned int pattern_switch_;
double mismatch_psnr_;
unsigned int mismatch_nframes_;
unsigned int error_frames_[kMaxErrorFrames];
unsigned int droppable_frames_[kMaxDroppableFrames];
libaom_test::TestMode encoding_mode_;
};
TEST_P(ErrorResilienceTestLarge, OnVersusOff) {
const aom_rational timebase = { 33333333, 1000000000 };
cfg_.g_timebase = timebase;
cfg_.rc_target_bitrate = 2000;
cfg_.g_lag_in_frames = 10;
init_flags_ = AOM_CODEC_USE_PSNR;
libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
timebase.den, timebase.num, 0, 12);
// Error resilient mode OFF.
cfg_.g_error_resilient = 0;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
const double psnr_resilience_off = GetAveragePsnr();
EXPECT_GT(psnr_resilience_off, 25.0);
// Error resilient mode ON.
cfg_.g_error_resilient = 1;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
const double psnr_resilience_on = GetAveragePsnr();
EXPECT_GT(psnr_resilience_on, 25.0);
// Test that turning on error resilient mode hurts by 10% at most.
if (psnr_resilience_off > 0.0) {
const double psnr_ratio = psnr_resilience_on / psnr_resilience_off;
EXPECT_GE(psnr_ratio, 0.9);
EXPECT_LE(psnr_ratio, 1.1);
}
}
// Check for successful decoding and no encoder/decoder mismatch
// if we lose (i.e., drop before decoding) a set of droppable
// frames (i.e., frames that don't update any reference buffers).
// Check both isolated and consecutive loss.
TEST_P(ErrorResilienceTestLarge, DropFramesWithoutRecovery) {
const aom_rational timebase = { 33333333, 1000000000 };
cfg_.g_timebase = timebase;
cfg_.rc_target_bitrate = 500;
// FIXME(debargha): Fix this to work for any lag.
// Currently this test only works for lag = 0
cfg_.g_lag_in_frames = 0;
init_flags_ = AOM_CODEC_USE_PSNR;
libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
timebase.den, timebase.num, 0, 20);
// Error resilient mode ON.
cfg_.g_error_resilient = 1;
cfg_.kf_mode = AOM_KF_DISABLED;
// Set an arbitrary set of error frames same as droppable frames.
// In addition to isolated loss/drop, add a long consecutive series
// (of size 9) of dropped frames.
unsigned int num_droppable_frames = 5;
unsigned int droppable_frame_list[] = { 5, 10, 13, 16, 19 };
SetDroppableFrames(num_droppable_frames, droppable_frame_list);
SetErrorFrames(num_droppable_frames, droppable_frame_list);
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
// Test that no mismatches have been found
std::cout << " Mismatch frames: " << GetMismatchFrames() << "\n";
EXPECT_EQ(GetMismatchFrames(), (unsigned int)0);
// Reset previously set of error/droppable frames.
Reset();
#if 0
// TODO(jkoleszar): This test is disabled for the time being as too
// sensitive. It's not clear how to set a reasonable threshold for
// this behavior.
// Now set an arbitrary set of error frames that are non-droppable
unsigned int num_error_frames = 3;
unsigned int error_frame_list[] = {3, 10, 20};
SetErrorFrames(num_error_frames, error_frame_list);
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
// Test that dropping an arbitrary set of inter frames does not hurt too much
// Note the Average Mismatch PSNR is the average of the PSNR between
// decoded frame and encoder's version of the same frame for all frames
// with mismatch.
const double psnr_resilience_mismatch = GetAverageMismatchPsnr();
std::cout << " Mismatch PSNR: "
<< psnr_resilience_mismatch << "\n";
EXPECT_GT(psnr_resilience_mismatch, 20.0);
#endif
}
AV1_INSTANTIATE_TEST_CASE(ErrorResilienceTestLarge, ONE_PASS_TEST_MODES);
} // namespace
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