/*
* Copyright (c) 2020 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 <cstdint>
#include <new >
#include <memory>
#include "./vpx_config.h"
#include "gtest/gtest.h"
#include "test/codec_factory.h"
#include "test/encode_test_driver.h"
#include "test/util.h"
#include "test/yuv_video_source.h"
#if CONFIG_VP9_DECODER
#include "vpx/vp8dx.h"
#endif
#include "vp9/simple_encode.h"
#include "vpx/vpx_codec.h"
#include "vpx/vpx_encoder.h"
#include "vpx/vpx_ext_ratectrl.h"
#include "vpx/vpx_image.h"
#include "vpx/vpx_tpl.h"
#include "vpx_dsp/vpx_dsp_common.h"
namespace {
constexpr int kShowFrameCount = 10;
constexpr int kKeyframeQp = 10;
constexpr int kLeafQp = 40;
constexpr int kArfQp = 15;
// Simple external rate controller for testing.
class RateControllerForTest {
public :
RateControllerForTest() : current_gop_(-1) {}
~RateControllerForTest() {}
void StartNextGop() { ++current_gop_; }
vpx_rc_gop_decision_t GetCurrentGop() const {
vpx_rc_gop_decision_t gop_decision;
if (current_gop_ == 0) {
gop_decision.use_key_frame = 1;
gop_decision.use_alt_ref = 1;
gop_decision.gop_coding_frames =
kShowFrameCount - 1 + gop_decision.use_alt_ref;
// key frame
gop_decision.update_type[0] = VPX_RC_KF_UPDATE;
gop_decision.update_ref_index[0] = 0;
gop_decision.ref_frame_list[0] = get_kf_ref_frame();
// arf
gop_decision.update_type[1] = VPX_RC_ARF_UPDATE;
gop_decision.update_ref_index[1] = 1;
gop_decision.ref_frame_list[1] = get_arf_ref_frame();
// leafs
for (int i = 2; i < gop_decision.gop_coding_frames; ++i) {
gop_decision.update_type[i] = VPX_RC_LF_UPDATE;
gop_decision.update_ref_index[i] = 2;
gop_decision.ref_frame_list[i] = get_leaf_ref_frame(i);
}
} else {
// Pad a overlay-only GOP as the last GOP.
EXPECT_EQ(current_gop_, 1);
gop_decision.use_key_frame = 0;
gop_decision.use_alt_ref = 0;
gop_decision.gop_coding_frames = 1;
gop_decision.update_type[0] = VPX_RC_OVERLAY_UPDATE;
gop_decision.update_ref_index[0] = 1;
gop_decision.ref_frame_list[0] = get_ovl_ref_frame();
}
return gop_decision;
}
int CalculateFrameDecision(int frame_index) {
if (current_gop_ == 0 && frame_index == 0) {
// Key frame, first frame in the first GOP.
return kKeyframeQp;
} else if (frame_index == 1) {
// ARF, we always use ARF for this test.
return kArfQp;
} else {
return kLeafQp;
}
}
private :
vpx_rc_ref_frame_t get_kf_ref_frame() const {
vpx_rc_ref_frame_t ref_frame;
ref_frame.index[0] = -1;
ref_frame.index[1] = -1;
ref_frame.index[2] = -1;
ref_frame.name[0] = VPX_RC_INVALID_REF_FRAME;
ref_frame.name[1] = VPX_RC_INVALID_REF_FRAME;
ref_frame.name[2] = VPX_RC_INVALID_REF_FRAME;
return ref_frame;
}
vpx_rc_ref_frame_t get_arf_ref_frame() const {
vpx_rc_ref_frame_t ref_frame;
ref_frame.index[0] = 0;
ref_frame.index[1] = -1;
ref_frame.index[2] = -1;
ref_frame.name[0] = VPX_RC_GOLDEN_FRAME;
ref_frame.name[1] = VPX_RC_INVALID_REF_FRAME;
ref_frame.name[2] = VPX_RC_INVALID_REF_FRAME;
return ref_frame;
}
vpx_rc_ref_frame_t get_leaf_ref_frame(int count) const {
vpx_rc_ref_frame_t ref_frame;
ref_frame.index[0] = 0;
ref_frame.index[1] = 1;
ref_frame.index[2] = count > 2 ? 2 : -1;
ref_frame.name[0] = VPX_RC_GOLDEN_FRAME;
ref_frame.name[1] = VPX_RC_ALTREF_FRAME;
ref_frame.name[2] =
count > 2 ? VPX_RC_LAST_FRAME : VPX_RC_INVALID_REF_FRAME;
return ref_frame;
}
vpx_rc_ref_frame_t get_ovl_ref_frame() const {
vpx_rc_ref_frame_t ref_frame;
ref_frame.index[0] = 1;
ref_frame.index[1] = -1;
ref_frame.index[2] = -1;
ref_frame.name[0] = VPX_RC_ALTREF_FRAME;
ref_frame.name[1] = VPX_RC_INVALID_REF_FRAME;
ref_frame.name[2] = VPX_RC_INVALID_REF_FRAME;
return ref_frame;
}
int current_gop_;
};
// Callbacks used in this test.
vpx_rc_status_t rc_test_create_model(
void * /*priv*/, const vpx_rc_config_t * /*ratectrl_config*/,
vpx_rc_model_t *rate_ctrl_model_ptr) {
std::unique_ptr<RateControllerForTest> test_controller(
new RateControllerForTest());
*rate_ctrl_model_ptr = test_controller.release();
return VPX_RC_OK;
}
vpx_rc_status_t rc_test_send_firstpass_stats(
vpx_rc_model_t /*rate_ctrl_model*/,
const vpx_rc_firstpass_stats_t *first_pass_stats) {
EXPECT_EQ(first_pass_stats->num_frames, kShowFrameCount);
for (int i = 0; i < first_pass_stats->num_frames; ++i) {
EXPECT_DOUBLE_EQ(first_pass_stats->frame_stats[i].frame, i);
}
return VPX_RC_OK;
}
vpx_rc_status_t rc_test_send_tpl_gop_stats(
vpx_rc_model_t /*rate_ctrl_model*/, const VpxTplGopStats *tpl_gop_stats) {
EXPECT_GT(tpl_gop_stats->size, 0);
for (int i = 0; i < tpl_gop_stats->size; ++i) {
EXPECT_GT(tpl_gop_stats->frame_stats_list[i].num_blocks, 0);
}
return VPX_RC_OK;
}
vpx_rc_status_t rc_test_get_encodeframe_decision(
vpx_rc_model_t rate_ctrl_model, const int frame_gop_index,
vpx_rc_encodeframe_decision_t *frame_decision) {
RateControllerForTest *test_controller =
static_cast <RateControllerForTest *>(rate_ctrl_model);
frame_decision->q_index =
test_controller->CalculateFrameDecision(frame_gop_index);
frame_decision->rdmult =
frame_decision->q_index * frame_decision->q_index / 2;
frame_decision->delta_q_uv = 0;
return VPX_RC_OK;
}
vpx_rc_status_t rc_test_get_gop_decision(vpx_rc_model_t rate_ctrl_model,
vpx_rc_gop_decision_t *gop_decision) {
RateControllerForTest *test_controller =
static_cast <RateControllerForTest *>(rate_ctrl_model);
test_controller->StartNextGop();
*gop_decision = test_controller->GetCurrentGop();
return VPX_RC_OK;
}
vpx_rc_status_t rc_delete_model(vpx_rc_model_t rate_ctrl_model) {
RateControllerForTest *test_controller =
static_cast <RateControllerForTest *>(rate_ctrl_model);
delete test_controller;
return VPX_RC_OK;
}
class ExtRateCtrlTest : public ::libvpx_test::EncoderTest,
public ::testing::Test {
protected :
ExtRateCtrlTest()
: EncoderTest(&::libvpx_test::kVP9), received_show_frame_count_(0),
current_frame_qp_(0) {}
~ExtRateCtrlTest() override = default ;
void SetUp() override {
InitializeConfig();
#if CONFIG_REALTIME_ONLY
SetMode(::libvpx_test::kRealTime);
#else
SetMode(::libvpx_test::kTwoPassGood);
#endif
}
void PreEncodeFrameHook(::libvpx_test::VideoSource *video,
::libvpx_test::Encoder *encoder) override {
if (video->frame() == 0) {
vpx_rc_funcs_t rc_funcs = {};
rc_funcs.rc_type = VPX_RC_GOP_QP;
rc_funcs.create_model = rc_test_create_model;
rc_funcs.send_firstpass_stats = rc_test_send_firstpass_stats;
rc_funcs.send_tpl_gop_stats = rc_test_send_tpl_gop_stats;
rc_funcs.get_gop_decision = rc_test_get_gop_decision;
rc_funcs.get_encodeframe_decision = rc_test_get_encodeframe_decision;
rc_funcs.delete_model = rc_delete_model;
encoder->Control(VP9E_SET_EXTERNAL_RATE_CONTROL, &rc_funcs);
}
}
#if CONFIG_VP9_DECODER
bool HandleDecodeResult(const vpx_codec_err_t res_dec,
const ::libvpx_test::VideoSource & /*video*/,
::libvpx_test::Decoder *decoder) override {
EXPECT_EQ(VPX_CODEC_OK, res_dec) << decoder->DecodeError();
decoder->Control(VPXD_GET_LAST_QUANTIZER, ¤t_frame_qp_);
return VPX_CODEC_OK == res_dec;
}
void FramePktHook(const vpx_codec_cx_pkt_t *pkt) override {
// We are not comparing current_frame_qp_ here because the encoder will
// pack ARF and the next show frame into one pkt. Therefore, we might
// receive two frames in one pkt. However, one thing we are sure is that
// each pkt will have just one show frame. Therefore, we can check if the
// received show frame count match the actual show frame count.
if (pkt->kind == VPX_CODEC_CX_FRAME_PKT) {
++received_show_frame_count_;
}
}
#endif // CONFIG_VP9_DECODER
int received_show_frame_count_;
int current_frame_qp_;
};
TEST_F(ExtRateCtrlTest, EncodeTest) {
cfg_.rc_target_bitrate = 4000;
cfg_.g_lag_in_frames = 25;
std::unique_ptr<libvpx_test::VideoSource> video;
video.reset(new (std::nothrow) libvpx_test::YUVVideoSource(
"bus_352x288_420_f20_b8.yuv" , VPX_IMG_FMT_I420, 352, 288, 30, 1, 0,
kShowFrameCount));
ASSERT_NE(video, nullptr);
ASSERT_NO_FATAL_FAILURE(RunLoop(video.get()));
EXPECT_EQ(received_show_frame_count_, kShowFrameCount);
}
} // namespace
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