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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 <climits>
#include <vector>
#include "gtest/gtest.h"
#include "config/aom_config.h"
#include "test/codec_factory.h"
#include "test/encode_test_driver.h"
#include "test/i420_video_source.h"
#include "test/video_source.h"
#include "test/util.h"
namespace {
const unsigned int kCqLevel = 18;
const double kMaxPsnr = 100.0;
// kPsnrThreshold represents the psnr threshold used to validate the quality of
// the first frame. The indices correspond to one/two-pass, allintra and
// realtime encoding modes.
const double kPsnrThreshold[3] = { 29.0, 41.5, 41.5 };
// kPsnrFluctuation represents the maximum allowed psnr fluctuation w.r.t first
// frame. The indices correspond to one/two-pass, allintra and realtime
// encoding modes.
const double kPsnrFluctuation[3] = { 2.5, 0.3, 17.0 };
class MonochromeTest
: public ::libaom_test::CodecTestWith3Params<libaom_test::TestMode, int,
int>,
public ::libaom_test::EncoderTest {
protected:
MonochromeTest()
: EncoderTest(GET_PARAM(0)), lossless_(GET_PARAM(2)),
frame0_psnr_y_(0.0) {}
~MonochromeTest() override = default;
void SetUp() override { InitializeConfig(GET_PARAM(1)); }
void PreEncodeFrameHook(::libaom_test::VideoSource *video,
::libaom_test::Encoder *encoder) override {
if (video->frame() == 0) {
encoder->Control(AOME_SET_CPUUSED, GET_PARAM(3));
if (mode_ == ::libaom_test::kAllIntra) {
encoder->Control(AOME_SET_CQ_LEVEL, kCqLevel);
} else if (mode_ == ::libaom_test::kRealTime) {
encoder->Control(AOME_SET_MAX_INTRA_BITRATE_PCT, 10000);
}
if (lossless_) {
encoder->Control(AV1E_SET_LOSSLESS, 1);
}
}
}
void DecompressedFrameHook(const aom_image_t &img,
aom_codec_pts_t pts) override {
(void)pts;
// Get value of top-left corner pixel of U plane
int chroma_value = img.planes[AOM_PLANE_U][0];
bool is_chroma_constant =
ComparePlaneToValue(img, AOM_PLANE_U, chroma_value) &&
ComparePlaneToValue(img, AOM_PLANE_V, chroma_value);
// Chroma planes should be constant
EXPECT_TRUE(is_chroma_constant);
// Monochrome flag on image should be set
EXPECT_EQ(img.monochrome, 1);
chroma_value_list_.push_back(chroma_value);
}
// Returns true if all pixels on the plane are equal to value, and returns
// false otherwise.
bool ComparePlaneToValue(const aom_image_t &img, const int plane,
const int value) {
const int w = aom_img_plane_width(&img, plane);
const int h = aom_img_plane_height(&img, plane);
const uint8_t *const buf = img.planes[plane];
const int stride = img.stride[plane];
for (int r = 0; r < h; ++r) {
for (int c = 0; c < w; ++c) {
if (buf[r * stride + c] != value) return false;
}
}
return true;
}
void PSNRPktHook(const aom_codec_cx_pkt_t *pkt) override {
// Check average PSNR value is >= 100 db in case of lossless encoding.
if (lossless_) {
EXPECT_GE(pkt->data.psnr.psnr[0], kMaxPsnr);
return;
}
const int psnr_index = (mode_ == ::libaom_test::kRealTime) ? 2
: (mode_ == ::libaom_test::kAllIntra) ? 1
: 0;
// Check that the initial Y PSNR value is 'high enough', and check that
// subsequent Y PSNR values are 'close' to this initial value.
if (frame0_psnr_y_ == 0.0) {
frame0_psnr_y_ = pkt->data.psnr.psnr[1];
EXPECT_GT(frame0_psnr_y_, kPsnrThreshold[psnr_index]);
}
EXPECT_NEAR(pkt->data.psnr.psnr[1], frame0_psnr_y_,
kPsnrFluctuation[psnr_index]);
}
int lossless_;
std::vector<int> chroma_value_list_;
double frame0_psnr_y_;
};
#if !CONFIG_REALTIME_ONLY
TEST_P(MonochromeTest, TestMonochromeEncoding) {
::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 5);
init_flags_ = AOM_CODEC_USE_PSNR;
cfg_.rc_buf_initial_sz = 500;
cfg_.rc_buf_optimal_sz = 600;
cfg_.rc_buf_sz = 1000;
cfg_.rc_min_quantizer = 2;
cfg_.rc_max_quantizer = 56;
cfg_.rc_undershoot_pct = 50;
cfg_.rc_overshoot_pct = 50;
cfg_.rc_end_usage = AOM_CBR;
cfg_.g_lag_in_frames = 1;
cfg_.kf_min_dist = cfg_.kf_max_dist = 3000;
// Enable dropped frames.
cfg_.rc_dropframe_thresh = 1;
// Run at low bitrate.
cfg_.rc_target_bitrate = 40;
// Set monochrome encoding flag
cfg_.monochrome = 1;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
// Check that the chroma planes are equal across all frames
std::vector<int>::const_iterator iter = chroma_value_list_.begin();
int initial_chroma_value = *iter;
for (; iter != chroma_value_list_.end(); ++iter) {
// Check that all decoded frames have the same constant chroma planes.
EXPECT_EQ(*iter, initial_chroma_value);
}
}
class MonochromeAllIntraTest : public MonochromeTest {};
TEST_P(MonochromeAllIntraTest, TestMonochromeEncoding) {
::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 5);
init_flags_ = AOM_CODEC_USE_PSNR;
// Set monochrome encoding flag
cfg_.monochrome = 1;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
// Check that the chroma planes are equal across all frames
std::vector<int>::const_iterator iter = chroma_value_list_.begin();
int initial_chroma_value = *iter;
for (; iter != chroma_value_list_.end(); ++iter) {
// Check that all decoded frames have the same constant chroma planes.
EXPECT_EQ(*iter, initial_chroma_value);
}
}
#endif // !CONFIG_REALTIME_ONLY
class MonochromeRealtimeTest : public MonochromeTest {};
TEST_P(MonochromeRealtimeTest, TestMonochromeEncoding) {
::libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 30);
init_flags_ = AOM_CODEC_USE_PSNR;
// Set monochrome encoding flag
cfg_.monochrome = 1;
// Run at low bitrate.
cfg_.rc_target_bitrate = 40;
cfg_.rc_buf_sz = 6000;
cfg_.rc_buf_initial_sz = 4000;
cfg_.rc_buf_optimal_sz = 5000;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
#if CONFIG_AV1_DECODER
// Check that the chroma planes are equal across all frames
std::vector<int>::const_iterator iter = chroma_value_list_.begin();
int initial_chroma_value = *iter;
for (; iter != chroma_value_list_.end(); ++iter) {
// Check that all decoded frames have the same constant chroma planes.
EXPECT_EQ(*iter, initial_chroma_value);
}
#endif
}
#if !CONFIG_REALTIME_ONLY
AV1_INSTANTIATE_TEST_SUITE(MonochromeTest,
::testing::Values(::libaom_test::kOnePassGood,
::libaom_test::kTwoPassGood),
::testing::Values(0), // lossless
::testing::Values(0)); // cpu_used
AV1_INSTANTIATE_TEST_SUITE(MonochromeAllIntraTest,
::testing::Values(::libaom_test::kAllIntra),
::testing::Values(0, 1), // lossless
::testing::Values(6, 9)); // cpu_used
#endif // !CONFIG_REALTIME_ONLY
AV1_INSTANTIATE_TEST_SUITE(MonochromeRealtimeTest,
::testing::Values(::libaom_test::kRealTime),
::testing::Values(0), // lossless
::testing::Values(6, 8, 10)); // cpu_used
} // namespace