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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/cast/test/utility/video_utility.h"
#include <math.h>
#include <cstdio>
#include "base/rand_util.h"
#include "third_party/libyuv/include/libyuv/compare.h"
#include "ui/gfx/geometry/size.h"
namespace media {
namespace cast {
double I420PSNR(const scoped_refptr<media::VideoFrame>& frame1,
const scoped_refptr<media::VideoFrame>& frame2) {
if (frame1->coded_size().width() != frame2->coded_size().width() ||
frame1->coded_size().height() != frame2->coded_size().height())
return -1;
return libyuv::I420Psnr(frame1->data(VideoFrame::kYPlane),
frame1->stride(VideoFrame::kYPlane),
frame1->data(VideoFrame::kUPlane),
frame1->stride(VideoFrame::kUPlane),
frame1->data(VideoFrame::kVPlane),
frame1->stride(VideoFrame::kVPlane),
frame2->data(VideoFrame::kYPlane),
frame2->stride(VideoFrame::kYPlane),
frame2->data(VideoFrame::kUPlane),
frame2->stride(VideoFrame::kUPlane),
frame2->data(VideoFrame::kVPlane),
frame2->stride(VideoFrame::kVPlane),
frame1->coded_size().width(),
frame1->coded_size().height());
}
double I420SSIM(const scoped_refptr<media::VideoFrame>& frame1,
const scoped_refptr<media::VideoFrame>& frame2) {
if (frame1->coded_size().width() != frame2->coded_size().width() ||
frame1->coded_size().height() != frame2->coded_size().height())
return -1;
return libyuv::I420Ssim(frame1->data(VideoFrame::kYPlane),
frame1->stride(VideoFrame::kYPlane),
frame1->data(VideoFrame::kUPlane),
frame1->stride(VideoFrame::kUPlane),
frame1->data(VideoFrame::kVPlane),
frame1->stride(VideoFrame::kVPlane),
frame2->data(VideoFrame::kYPlane),
frame2->stride(VideoFrame::kYPlane),
frame2->data(VideoFrame::kUPlane),
frame2->stride(VideoFrame::kUPlane),
frame2->data(VideoFrame::kVPlane),
frame2->stride(VideoFrame::kVPlane),
frame1->coded_size().width(),
frame1->coded_size().height());
}
void PopulateVideoFrame(VideoFrame* frame, int start_value) {
int height = frame->coded_size().height();
int stride_y = frame->stride(VideoFrame::kYPlane);
int stride_u = frame->stride(VideoFrame::kUPlane);
int stride_v = frame->stride(VideoFrame::kVPlane);
int half_height = (height + 1) / 2;
uint8* y_plane = frame->data(VideoFrame::kYPlane);
uint8* u_plane = frame->data(VideoFrame::kUPlane);
uint8* v_plane = frame->data(VideoFrame::kVPlane);
// Set Y.
for (int j = 0; j < height; ++j) {
for (int i = 0; i < stride_y; ++i) {
*y_plane = static_cast<uint8>(start_value + i + j);
++y_plane;
}
}
// Set U.
for (int j = 0; j < half_height; ++j) {
for (int i = 0; i < stride_u; ++i) {
*u_plane = static_cast<uint8>(start_value + i + j);
++u_plane;
}
}
// Set V.
for (int j = 0; j < half_height; ++j) {
for (int i = 0; i < stride_v; ++i) {
*v_plane = static_cast<uint8>(start_value + i + j);
++v_plane;
}
}
}
void PopulateVideoFrameWithNoise(VideoFrame* frame) {
int height = frame->coded_size().height();
int stride_y = frame->stride(VideoFrame::kYPlane);
int stride_u = frame->stride(VideoFrame::kUPlane);
int stride_v = frame->stride(VideoFrame::kVPlane);
int half_height = (height + 1) / 2;
uint8* y_plane = frame->data(VideoFrame::kYPlane);
uint8* u_plane = frame->data(VideoFrame::kUPlane);
uint8* v_plane = frame->data(VideoFrame::kVPlane);
base::RandBytes(y_plane, height * stride_y);
base::RandBytes(u_plane, half_height * stride_u);
base::RandBytes(v_plane, half_height * stride_v);
}
bool PopulateVideoFrameFromFile(VideoFrame* frame, FILE* video_file) {
int width = frame->coded_size().width();
int height = frame->coded_size().height();
int half_width = (width + 1) / 2;
int half_height = (height + 1) / 2;
size_t frame_size = width * height + 2 * half_width * half_height;
uint8* y_plane = frame->data(VideoFrame::kYPlane);
uint8* u_plane = frame->data(VideoFrame::kUPlane);
uint8* v_plane = frame->data(VideoFrame::kVPlane);
uint8* raw_data = new uint8[frame_size];
size_t count = fread(raw_data, 1, frame_size, video_file);
if (count != frame_size)
return false;
memcpy(y_plane, raw_data, width * height);
memcpy(u_plane, raw_data + width * height, half_width * half_height);
memcpy(v_plane,
raw_data + width * height + half_width * half_height,
half_width * half_height);
delete[] raw_data;
return true;
}
} // namespace cast
} // namespace media
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