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// Copyright (c) 2012 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/base/video_frame.h"
#include "base/format_macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/stringprintf.h"
#include "media/base/buffers.h"
#include "media/base/mock_filters.h"
#include "media/base/yuv_convert.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
using base::MD5DigestToBase16;
// Helper function that initializes a YV12 frame with white and black scan
// lines based on the |white_to_black| parameter. If 0, then the entire
// frame will be black, if 1 then the entire frame will be white.
void InitializeYV12Frame(VideoFrame* frame, double white_to_black) {
EXPECT_EQ(VideoFrame::YV12, frame->format());
size_t first_black_row = static_cast<size_t>(frame->height() *
white_to_black);
uint8* y_plane = frame->data(VideoFrame::kYPlane);
for (size_t row = 0; row < frame->height(); ++row) {
int color = (row < first_black_row) ? 0xFF : 0x00;
memset(y_plane, color, frame->width());
y_plane += frame->stride(VideoFrame::kYPlane);
}
uint8* u_plane = frame->data(VideoFrame::kUPlane);
uint8* v_plane = frame->data(VideoFrame::kVPlane);
for (size_t row = 0; row < frame->height(); row += 2) {
memset(u_plane, 0x80, frame->width() / 2);
memset(v_plane, 0x80, frame->width() / 2);
u_plane += frame->stride(VideoFrame::kUPlane);
v_plane += frame->stride(VideoFrame::kVPlane);
}
}
// Given a |yv12_frame| this method converts the YV12 frame to RGBA and
// makes sure that all the pixels of the RBG frame equal |expect_rgb_color|.
void ExpectFrameColor(media::VideoFrame* yv12_frame, uint32 expect_rgb_color) {
ASSERT_EQ(VideoFrame::YV12, yv12_frame->format());
ASSERT_EQ(yv12_frame->stride(VideoFrame::kUPlane),
yv12_frame->stride(VideoFrame::kVPlane));
scoped_refptr<media::VideoFrame> rgb_frame;
rgb_frame = media::VideoFrame::CreateFrame(VideoFrame::RGB32,
yv12_frame->width(),
yv12_frame->height(),
yv12_frame->GetTimestamp(),
yv12_frame->GetDuration());
ASSERT_EQ(yv12_frame->width(), rgb_frame->width());
ASSERT_EQ(yv12_frame->height(), rgb_frame->height());
media::ConvertYUVToRGB32(yv12_frame->data(VideoFrame::kYPlane),
yv12_frame->data(VideoFrame::kUPlane),
yv12_frame->data(VideoFrame::kVPlane),
rgb_frame->data(VideoFrame::kRGBPlane),
rgb_frame->width(),
rgb_frame->height(),
yv12_frame->stride(VideoFrame::kYPlane),
yv12_frame->stride(VideoFrame::kUPlane),
rgb_frame->stride(VideoFrame::kRGBPlane),
media::YV12);
for (size_t row = 0; row < rgb_frame->height(); ++row) {
uint32* rgb_row_data = reinterpret_cast<uint32*>(
rgb_frame->data(VideoFrame::kRGBPlane) +
(rgb_frame->stride(VideoFrame::kRGBPlane) * row));
for (size_t col = 0; col < rgb_frame->width(); ++col) {
SCOPED_TRACE(
base::StringPrintf("Checking (%" PRIuS ", %" PRIuS ")", row, col));
EXPECT_EQ(expect_rgb_color, rgb_row_data[col]);
}
}
}
// Fill each plane to its reported extents and verify accessors report non
// zero values. Additionally, for the first plane verify the rows and
// row_bytes values are correct.
void ExpectFrameExtents(VideoFrame::Format format, int planes,
int bytes_per_pixel, const char* expected_hash) {
const unsigned char kFillByte = 0x80;
const size_t kWidth = 61;
const size_t kHeight = 31;
const base::TimeDelta kTimestamp = base::TimeDelta::FromMicroseconds(1337);
const base::TimeDelta kDuration = base::TimeDelta::FromMicroseconds(1667);
scoped_refptr<VideoFrame> frame = VideoFrame::CreateFrame(
format, kWidth, kHeight, kTimestamp, kDuration);
ASSERT_TRUE(frame);
for(int plane = 0; plane < planes; plane++) {
SCOPED_TRACE(base::StringPrintf("Checking plane %d", plane));
EXPECT_TRUE(frame->data(plane));
EXPECT_TRUE(frame->stride(plane));
EXPECT_TRUE(frame->rows(plane));
EXPECT_TRUE(frame->row_bytes(plane));
if (plane == 0) {
EXPECT_EQ((size_t)frame->rows(plane), kHeight);
EXPECT_EQ((size_t)frame->row_bytes(plane), kWidth * bytes_per_pixel);
}
memset(frame->data(plane), kFillByte,
frame->stride(plane) * frame->rows(plane));
}
base::MD5Context context;
base::MD5Init(&context);
frame->HashFrameForTesting(&context);
base::MD5Digest digest;
base::MD5Final(&digest, &context);
EXPECT_EQ(MD5DigestToBase16(digest), expected_hash);
}
TEST(VideoFrame, CreateFrame) {
const size_t kWidth = 64;
const size_t kHeight = 48;
const base::TimeDelta kTimestamp = base::TimeDelta::FromMicroseconds(1337);
const base::TimeDelta kDuration = base::TimeDelta::FromMicroseconds(1667);
// Create a YV12 Video Frame.
scoped_refptr<media::VideoFrame> frame =
VideoFrame::CreateFrame(media::VideoFrame::YV12, kWidth, kHeight,
kTimestamp, kDuration);
ASSERT_TRUE(frame);
// Test VideoFrame implementation.
EXPECT_EQ(media::VideoFrame::YV12, frame->format());
{
SCOPED_TRACE("");
InitializeYV12Frame(frame, 0.0f);
ExpectFrameColor(frame, 0xFF000000);
}
base::MD5Digest digest;
base::MD5Context context;
base::MD5Init(&context);
frame->HashFrameForTesting(&context);
base::MD5Final(&digest, &context);
EXPECT_EQ(MD5DigestToBase16(digest), "9065c841d9fca49186ef8b4ef547e79b");
{
SCOPED_TRACE("");
InitializeYV12Frame(frame, 1.0f);
ExpectFrameColor(frame, 0xFFFFFFFF);
}
base::MD5Init(&context);
frame->HashFrameForTesting(&context);
base::MD5Final(&digest, &context);
EXPECT_EQ(MD5DigestToBase16(digest), "911991d51438ad2e1a40ed5f6fc7c796");
// Test an empty frame.
frame = VideoFrame::CreateEmptyFrame();
EXPECT_TRUE(frame->IsEndOfStream());
}
TEST(VideoFrame, CreateBlackFrame) {
const size_t kWidth = 2;
const size_t kHeight = 2;
const uint8 kExpectedYRow[] = { 0, 0 };
const uint8 kExpectedUVRow[] = { 128 };
scoped_refptr<media::VideoFrame> frame =
VideoFrame::CreateBlackFrame(kWidth, kHeight);
ASSERT_TRUE(frame);
// Test basic properties.
EXPECT_EQ(0, frame->GetTimestamp().InMicroseconds());
EXPECT_EQ(0, frame->GetDuration().InMicroseconds());
EXPECT_FALSE(frame->IsEndOfStream());
// Test |frame| properties.
EXPECT_EQ(VideoFrame::YV12, frame->format());
EXPECT_EQ(kWidth, frame->width());
EXPECT_EQ(kHeight, frame->height());
// Test frames themselves.
uint8* y_plane = frame->data(VideoFrame::kYPlane);
for (size_t y = 0; y < frame->height(); ++y) {
EXPECT_EQ(0, memcmp(kExpectedYRow, y_plane, arraysize(kExpectedYRow)));
y_plane += frame->stride(VideoFrame::kYPlane);
}
uint8* u_plane = frame->data(VideoFrame::kUPlane);
uint8* v_plane = frame->data(VideoFrame::kVPlane);
for (size_t y = 0; y < frame->height() / 2; ++y) {
EXPECT_EQ(0, memcmp(kExpectedUVRow, u_plane, arraysize(kExpectedUVRow)));
EXPECT_EQ(0, memcmp(kExpectedUVRow, v_plane, arraysize(kExpectedUVRow)));
u_plane += frame->stride(VideoFrame::kUPlane);
v_plane += frame->stride(VideoFrame::kVPlane);
}
}
// Ensure each frame is properly sized and allocated. Will trigger OOB reads
// and writes as well as incorrect frame hashes otherwise.
TEST(VideoFrame, CheckFrameExtents) {
// Each call consists of a VideoFrame::Format, # of planes, bytes per pixel,
// and the expected hash of all planes if filled with kFillByte (defined in
// ExpectFrameExtents).
ExpectFrameExtents(
VideoFrame::RGB32, 1, 4, "de6d3d567e282f6a38d478f04fc81fb0");
ExpectFrameExtents(
VideoFrame::YV12, 3, 1, "71113bdfd4c0de6cf62f48fb74f7a0b1");
ExpectFrameExtents(
VideoFrame::YV16, 3, 1, "9bb99ac3ff350644ebff4d28dc01b461");
}
} // namespace media
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