ref: 9a15835812f1fac8a167d60d63065b10ce1657fb
dir: /test/resize_test.cc/
/*
* Copyright (c) 2012 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 <climits>
#include <vector>
#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/video_source.h"
#include "test/util.h"
// Enable(1) or Disable(0) writing of the compressed bitstream.
#define WRITE_COMPRESSED_STREAM 0
namespace {
#if WRITE_COMPRESSED_STREAM
static void mem_put_le16(char *const mem, const unsigned int val) {
mem[0] = val;
mem[1] = val >> 8;
}
static void mem_put_le32(char *const mem, const unsigned int val) {
mem[0] = val;
mem[1] = val >> 8;
mem[2] = val >> 16;
mem[3] = val >> 24;
}
static void write_ivf_file_header(const vpx_codec_enc_cfg_t *const cfg,
int frame_cnt, FILE *const outfile) {
char header[32];
header[0] = 'D';
header[1] = 'K';
header[2] = 'I';
header[3] = 'F';
mem_put_le16(header + 4, 0); /* version */
mem_put_le16(header + 6, 32); /* headersize */
mem_put_le32(header + 8, 0x30395056); /* fourcc (vp9) */
mem_put_le16(header + 12, cfg->g_w); /* width */
mem_put_le16(header + 14, cfg->g_h); /* height */
mem_put_le32(header + 16, cfg->g_timebase.den); /* rate */
mem_put_le32(header + 20, cfg->g_timebase.num); /* scale */
mem_put_le32(header + 24, frame_cnt); /* length */
mem_put_le32(header + 28, 0); /* unused */
(void)fwrite(header, 1, 32, outfile);
}
static void write_ivf_frame_size(FILE *const outfile, const size_t size) {
char header[4];
mem_put_le32(header, static_cast<unsigned int>(size));
(void)fwrite(header, 1, 4, outfile);
}
static void write_ivf_frame_header(const vpx_codec_cx_pkt_t *const pkt,
FILE *const outfile) {
char header[12];
vpx_codec_pts_t pts;
if (pkt->kind != VPX_CODEC_CX_FRAME_PKT)
return;
pts = pkt->data.frame.pts;
mem_put_le32(header, static_cast<unsigned int>(pkt->data.frame.sz));
mem_put_le32(header + 4, pts & 0xFFFFFFFF);
mem_put_le32(header + 8, pts >> 32);
(void)fwrite(header, 1, 12, outfile);
}
#endif // WRITE_COMPRESSED_STREAM
const unsigned int kInitialWidth = 320;
const unsigned int kInitialHeight = 240;
unsigned int ScaleForFrameNumber(unsigned int frame, unsigned int val) {
if (frame < 10)
return val;
if (frame < 20)
return val / 2;
if (frame < 30)
return val * 2 / 3;
if (frame < 40)
return val / 4;
if (frame < 50)
return val * 7 / 8;
return val;
}
class ResizingVideoSource : public ::libvpx_test::DummyVideoSource {
public:
ResizingVideoSource() {
SetSize(kInitialWidth, kInitialHeight);
limit_ = 60;
}
virtual ~ResizingVideoSource() {}
protected:
virtual void Next() {
++frame_;
SetSize(ScaleForFrameNumber(frame_, kInitialWidth),
ScaleForFrameNumber(frame_, kInitialHeight));
FillFrame();
}
};
class ResizeTest : public ::libvpx_test::EncoderTest,
public ::libvpx_test::CodecTestWithParam<libvpx_test::TestMode> {
protected:
ResizeTest() : EncoderTest(GET_PARAM(0)) {}
virtual ~ResizeTest() {}
struct FrameInfo {
FrameInfo(vpx_codec_pts_t _pts, unsigned int _w, unsigned int _h)
: pts(_pts), w(_w), h(_h) {}
vpx_codec_pts_t pts;
unsigned int w;
unsigned int h;
};
virtual void SetUp() {
InitializeConfig();
SetMode(GET_PARAM(1));
}
virtual void DecompressedFrameHook(const vpx_image_t &img,
vpx_codec_pts_t pts) {
frame_info_list_.push_back(FrameInfo(pts, img.d_w, img.d_h));
}
std::vector< FrameInfo > frame_info_list_;
};
TEST_P(ResizeTest, TestExternalResizeWorks) {
ResizingVideoSource video;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
for (std::vector<FrameInfo>::const_iterator info = frame_info_list_.begin();
info != frame_info_list_.end(); ++info) {
const unsigned int frame = static_cast<unsigned>(info->pts);
const unsigned int expected_w = ScaleForFrameNumber(frame, kInitialWidth);
const unsigned int expected_h = ScaleForFrameNumber(frame, kInitialHeight);
EXPECT_EQ(expected_w, info->w)
<< "Frame " << frame << "had unexpected width";
EXPECT_EQ(expected_h, info->h)
<< "Frame " << frame << "had unexpected height";
}
}
const unsigned int kStepDownFrame = 3;
const unsigned int kStepUpFrame = 6;
class ResizeInternalTest : public ResizeTest {
protected:
#if WRITE_COMPRESSED_STREAM
ResizeInternalTest()
: ResizeTest(),
frame0_psnr_(0.0),
outfile_(NULL),
out_frames_(0) {}
#else
ResizeInternalTest() : ResizeTest(), frame0_psnr_(0.0) {}
#endif
virtual ~ResizeInternalTest() {}
virtual void BeginPassHook(unsigned int /*pass*/) {
#if WRITE_COMPRESSED_STREAM
outfile_ = fopen("vp90-2-05-resize.ivf", "wb");
#endif
}
virtual void EndPassHook() {
#if WRITE_COMPRESSED_STREAM
if (outfile_) {
if (!fseek(outfile_, 0, SEEK_SET))
write_ivf_file_header(&cfg_, out_frames_, outfile_);
fclose(outfile_);
outfile_ = NULL;
}
#endif
}
virtual void PreEncodeFrameHook(libvpx_test::VideoSource *video,
libvpx_test::Encoder *encoder) {
if (video->frame() == kStepDownFrame) {
struct vpx_scaling_mode mode = {VP8E_FOURFIVE, VP8E_THREEFIVE};
encoder->Control(VP8E_SET_SCALEMODE, &mode);
}
if (video->frame() == kStepUpFrame) {
struct vpx_scaling_mode mode = {VP8E_NORMAL, VP8E_NORMAL};
encoder->Control(VP8E_SET_SCALEMODE, &mode);
}
}
virtual void PSNRPktHook(const vpx_codec_cx_pkt_t *pkt) {
if (!frame0_psnr_)
frame0_psnr_ = pkt->data.psnr.psnr[0];
EXPECT_NEAR(pkt->data.psnr.psnr[0], frame0_psnr_, 2.0);
}
#if WRITE_COMPRESSED_STREAM
virtual void FramePktHook(const vpx_codec_cx_pkt_t *pkt) {
++out_frames_;
// Write initial file header if first frame.
if (pkt->data.frame.pts == 0)
write_ivf_file_header(&cfg_, 0, outfile_);
// Write frame header and data.
write_ivf_frame_header(pkt, outfile_);
(void)fwrite(pkt->data.frame.buf, 1, pkt->data.frame.sz, outfile_);
}
#endif
double frame0_psnr_;
#if WRITE_COMPRESSED_STREAM
FILE *outfile_;
unsigned int out_frames_;
#endif
};
TEST_P(ResizeInternalTest, TestInternalResizeWorks) {
::libvpx_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
30, 1, 0, 10);
init_flags_ = VPX_CODEC_USE_PSNR;
// q picked such that initial keyframe on this clip is ~30dB PSNR
cfg_.rc_min_quantizer = cfg_.rc_max_quantizer = 48;
// If the number of frames being encoded is smaller than g_lag_in_frames
// the encoded frame is unavailable using the current API. Comparing
// frames to detect mismatch would then not be possible. Set
// g_lag_in_frames = 0 to get around this.
cfg_.g_lag_in_frames = 0;
ASSERT_NO_FATAL_FAILURE(RunLoop(&video));
for (std::vector<FrameInfo>::const_iterator info = frame_info_list_.begin();
info != frame_info_list_.end(); ++info) {
const vpx_codec_pts_t pts = info->pts;
if (pts >= kStepDownFrame && pts < kStepUpFrame) {
ASSERT_EQ(282U, info->w) << "Frame " << pts << " had unexpected width";
ASSERT_EQ(173U, info->h) << "Frame " << pts << " had unexpected height";
} else {
EXPECT_EQ(352U, info->w) << "Frame " << pts << " had unexpected width";
EXPECT_EQ(288U, info->h) << "Frame " << pts << " had unexpected height";
}
}
}
VP8_INSTANTIATE_TEST_CASE(ResizeTest, ONE_PASS_TEST_MODES);
VP9_INSTANTIATE_TEST_CASE(ResizeInternalTest,
::testing::Values(::libvpx_test::kOnePassBest));
} // namespace