ref: d55682c2aadbca664727fde886d42d39f7cbb5cd
dir: libvpx/test/vpx_scale_test.h
/*
* Copyright (c) 2014 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.
*/
#ifndef VPX_TEST_VPX_SCALE_TEST_H_
#define VPX_TEST_VPX_SCALE_TEST_H_
#include "third_party/googletest/src/include/gtest/gtest.h"
#include "./vpx_config.h"
#include "./vpx_scale_rtcd.h"
#include "test/acm_random.h"
#include "test/clear_system_state.h"
#include "test/register_state_check.h"
#include "vpx_mem/vpx_mem.h"
#include "vpx_scale/yv12config.h"
using libvpx_test::ACMRandom;
namespace libvpx_test {
class VpxScaleBase {
public:
virtual ~VpxScaleBase() { libvpx_test::ClearSystemState(); }
void ResetImage(YV12_BUFFER_CONFIG *const img, const int width,
const int height) {
memset(img, 0, sizeof(*img));
ASSERT_EQ(
0, vp8_yv12_alloc_frame_buffer(img, width, height, VP8BORDERINPIXELS))
<< "for width: " << width << " height: " << height;
memset(img->buffer_alloc, kBufFiller, img->frame_size);
}
void ResetImages(const int width, const int height) {
ResetImage(&img_, width, height);
ResetImage(&ref_img_, width, height);
ResetImage(&dst_img_, width, height);
FillPlane(img_.y_buffer, img_.y_crop_width, img_.y_crop_height,
img_.y_stride);
FillPlane(img_.u_buffer, img_.uv_crop_width, img_.uv_crop_height,
img_.uv_stride);
FillPlane(img_.v_buffer, img_.uv_crop_width, img_.uv_crop_height,
img_.uv_stride);
}
void ResetScaleImage(YV12_BUFFER_CONFIG *const img, const int width,
const int height) {
memset(img, 0, sizeof(*img));
#if CONFIG_VP9_HIGHBITDEPTH
ASSERT_EQ(0, vpx_alloc_frame_buffer(img, width, height, 1, 1, 0,
VP9_ENC_BORDER_IN_PIXELS, 0));
#else
ASSERT_EQ(0, vpx_alloc_frame_buffer(img, width, height, 1, 1,
VP9_ENC_BORDER_IN_PIXELS, 0));
#endif
memset(img->buffer_alloc, kBufFiller, img->frame_size);
}
void ResetScaleImages(const int src_width, const int src_height,
const int dst_width, const int dst_height) {
ResetScaleImage(&img_, src_width, src_height);
ResetScaleImage(&ref_img_, dst_width, dst_height);
ResetScaleImage(&dst_img_, dst_width, dst_height);
FillPlaneExtreme(img_.y_buffer, img_.y_crop_width, img_.y_crop_height,
img_.y_stride);
FillPlaneExtreme(img_.u_buffer, img_.uv_crop_width, img_.uv_crop_height,
img_.uv_stride);
FillPlaneExtreme(img_.v_buffer, img_.uv_crop_width, img_.uv_crop_height,
img_.uv_stride);
}
void DeallocImages() {
vp8_yv12_de_alloc_frame_buffer(&img_);
vp8_yv12_de_alloc_frame_buffer(&ref_img_);
vp8_yv12_de_alloc_frame_buffer(&dst_img_);
}
void DeallocScaleImages() {
vpx_free_frame_buffer(&img_);
vpx_free_frame_buffer(&ref_img_);
vpx_free_frame_buffer(&dst_img_);
}
protected:
static const int kBufFiller = 123;
static const int kBufMax = kBufFiller - 1;
static void FillPlane(uint8_t *const buf, const int width, const int height,
const int stride) {
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x) {
buf[x + (y * stride)] = (x + (width * y)) % kBufMax;
}
}
}
static void FillPlaneExtreme(uint8_t *const buf, const int width,
const int height, const int stride) {
ACMRandom rnd;
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x) {
buf[x + (y * stride)] = rnd.Rand8() % 2 ? 255 : 0;
}
}
}
static void ExtendPlane(uint8_t *buf, int crop_width, int crop_height,
int width, int height, int stride, int padding) {
// Copy the outermost visible pixel to a distance of at least 'padding.'
// The buffers are allocated such that there may be excess space outside the
// padding. As long as the minimum amount of padding is achieved it is not
// necessary to fill this space as well.
uint8_t *left = buf - padding;
uint8_t *right = buf + crop_width;
const int right_extend = padding + (width - crop_width);
const int bottom_extend = padding + (height - crop_height);
// Fill the border pixels from the nearest image pixel.
for (int y = 0; y < crop_height; ++y) {
memset(left, left[padding], padding);
memset(right, right[-1], right_extend);
left += stride;
right += stride;
}
left = buf - padding;
uint8_t *top = left - (stride * padding);
// The buffer does not always extend as far as the stride.
// Equivalent to padding + width + padding.
const int extend_width = padding + crop_width + right_extend;
// The first row was already extended to the left and right. Copy it up.
for (int y = 0; y < padding; ++y) {
memcpy(top, left, extend_width);
top += stride;
}
uint8_t *bottom = left + (crop_height * stride);
for (int y = 0; y < bottom_extend; ++y) {
memcpy(bottom, left + (crop_height - 1) * stride, extend_width);
bottom += stride;
}
}
void ReferenceExtendBorder() {
ExtendPlane(ref_img_.y_buffer, ref_img_.y_crop_width,
ref_img_.y_crop_height, ref_img_.y_width, ref_img_.y_height,
ref_img_.y_stride, ref_img_.border);
ExtendPlane(ref_img_.u_buffer, ref_img_.uv_crop_width,
ref_img_.uv_crop_height, ref_img_.uv_width, ref_img_.uv_height,
ref_img_.uv_stride, ref_img_.border / 2);
ExtendPlane(ref_img_.v_buffer, ref_img_.uv_crop_width,
ref_img_.uv_crop_height, ref_img_.uv_width, ref_img_.uv_height,
ref_img_.uv_stride, ref_img_.border / 2);
}
void ReferenceCopyFrame() {
// Copy img_ to ref_img_ and extend frame borders. This will be used for
// verifying extend_fn_ as well as copy_frame_fn_.
EXPECT_EQ(ref_img_.frame_size, img_.frame_size);
for (int y = 0; y < img_.y_crop_height; ++y) {
for (int x = 0; x < img_.y_crop_width; ++x) {
ref_img_.y_buffer[x + y * ref_img_.y_stride] =
img_.y_buffer[x + y * img_.y_stride];
}
}
for (int y = 0; y < img_.uv_crop_height; ++y) {
for (int x = 0; x < img_.uv_crop_width; ++x) {
ref_img_.u_buffer[x + y * ref_img_.uv_stride] =
img_.u_buffer[x + y * img_.uv_stride];
ref_img_.v_buffer[x + y * ref_img_.uv_stride] =
img_.v_buffer[x + y * img_.uv_stride];
}
}
ReferenceExtendBorder();
}
void CompareImages(const YV12_BUFFER_CONFIG actual) {
EXPECT_EQ(ref_img_.frame_size, actual.frame_size);
EXPECT_EQ(0, memcmp(ref_img_.buffer_alloc, actual.buffer_alloc,
ref_img_.frame_size));
}
YV12_BUFFER_CONFIG img_;
YV12_BUFFER_CONFIG ref_img_;
YV12_BUFFER_CONFIG dst_img_;
};
} // namespace libvpx_test
#endif // VPX_TEST_VPX_SCALE_TEST_H_