ref: 7ceddede063d79527c424e3823186bff5b2ccbd6
dir: /test/error_resilience_test.cc/
/*
* Copyright (c) 2013 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "third_party/googletest/src/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 ::libvpx_test::EncoderTest,
public ::libvpx_test::CodecTestWithParam<libvpx_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;
}
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 vpx_codec_cx_pkt_t *pkt) {
psnr_ += pkt->data.psnr.psnr[0];
nframes_++;
}
//
// Frame flags and layer id for temporal layers.
// For two layers, test pattern is:
// 1 3
// 0 2 .....
// LAST is updated on base/layer 0, GOLDEN updated on layer 1.
int SetFrameFlags(int frame_num, int num_temp_layers) {
int frame_flags = 0;
if (num_temp_layers == 2) {
if (frame_num % 2 == 0) {
// Layer 0: predict from L and ARF, update L.
frame_flags = VP8_EFLAG_NO_REF_GF |
VP8_EFLAG_NO_UPD_GF |
VP8_EFLAG_NO_UPD_ARF;
} else {
// Layer 1: predict from L, GF, and ARF, and update GF.
frame_flags = VP8_EFLAG_NO_UPD_ARF |
VP8_EFLAG_NO_UPD_LAST;
}
}
return frame_flags;
}
virtual void PreEncodeFrameHook(libvpx_test::VideoSource *video,
::libvpx_test::Encoder *encoder) {
frame_flags_ &= ~(VP8_EFLAG_NO_UPD_LAST |
VP8_EFLAG_NO_UPD_GF |
VP8_EFLAG_NO_UPD_ARF);
// For temporal layer case.
if (cfg_.ts_number_layers > 1) {
frame_flags_ = SetFrameFlags(video->frame(), cfg_.ts_number_layers);
for (unsigned int i = 0; i < droppable_nframes_; ++i) {
if (droppable_frames_[i] == video->frame()) {
std::cout << "Encoding droppable frame: "
<< droppable_frames_[i] << "\n";
}
}
} else {
if (droppable_nframes_ > 0 &&
(cfg_.g_pass == VPX_RC_LAST_PASS || cfg_.g_pass == VPX_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_ |= (VP8_EFLAG_NO_UPD_LAST |
VP8_EFLAG_NO_UPD_GF |
VP8_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 == VPX_RC_LAST_PASS || cfg_.g_pass == VPX_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 vpx_image_t *img1,
const vpx_image_t *img2) {
double mismatch_psnr = compute_psnr(img1, img2);
mismatch_psnr_ += mismatch_psnr;
++mismatch_nframes_;
// std::cout << "Mismatch frame psnr: " << mismatch_psnr << "\n";
}
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_;
}
private:
double psnr_;
unsigned int nframes_;
unsigned int error_nframes_;
unsigned int droppable_nframes_;
double mismatch_psnr_;
unsigned int mismatch_nframes_;
unsigned int error_frames_[kMaxErrorFrames];
unsigned int droppable_frames_[kMaxDroppableFrames];
libvpx_test::TestMode encoding_mode_;
};
TEST_P(ErrorResilienceTestLarge, OnVersusOff) {
const vpx_rational timebase = { 33333333, 1000000000 };
cfg_.g_timebase = timebase;
cfg_.rc_target_bitrate = 2000;
cfg_.g_lag_in_frames = 10;
init_flags_ = VPX_CODEC_USE_PSNR;
libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
timebase.den, timebase.num, 0, 30);
// 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 vpx_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_ = VPX_CODEC_USE_PSNR;
libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
timebase.den, timebase.num, 0, 40);
// Error resilient mode ON.
cfg_.g_error_resilient = 1;
cfg_.kf_mode = VPX_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 = 11;
unsigned int droppable_frame_list[] = {5, 16, 22, 23, 24, 25, 26, 27, 28,
29, 30};
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
}
// Check for successful decoding and no encoder/decoder mismatch
// if we lose (i.e., drop before decoding) the enhancement layer frames for a
// two layer temporal pattern. The base layer does not predict from the top
// layer, so successful decoding is expected.
TEST_P(ErrorResilienceTestLarge, 2LayersDropEnhancement) {
const vpx_rational timebase = { 33333333, 1000000000 };
cfg_.g_timebase = timebase;
cfg_.rc_target_bitrate = 500;
cfg_.g_lag_in_frames = 0;
cfg_.rc_end_usage = VPX_CBR;
// 2 Temporal layers, no spatial layers, CBR mode.
cfg_.ss_number_layers = 1;
cfg_.ts_number_layers = 2;
cfg_.ts_rate_decimator[0] = 2;
cfg_.ts_rate_decimator[1] = 1;
cfg_.ts_periodicity = 2;
cfg_.ts_target_bitrate[0] = 60 * cfg_.rc_target_bitrate / 100;
cfg_.ts_target_bitrate[1] = cfg_.rc_target_bitrate;
init_flags_ = VPX_CODEC_USE_PSNR;
libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
timebase.den, timebase.num, 0, 40);
// Error resilient mode ON.
cfg_.g_error_resilient = 1;
cfg_.kf_mode = VPX_KF_DISABLED;
// The odd frames are the enhancement layer for 2 layer pattern, so set
// those frames as droppable. Drop the last 7 frames.
unsigned int num_droppable_frames = 7;
unsigned int droppable_frame_list[] = {27, 29, 31, 33, 35, 37, 39};
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();
}
VP8_INSTANTIATE_TEST_CASE(ErrorResilienceTestLarge, ONE_PASS_TEST_MODES);
VP9_INSTANTIATE_TEST_CASE(ErrorResilienceTestLarge, ONE_PASS_TEST_MODES);
} // namespace