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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 <stddef.h>
#include <stdint.h>
#include <sstream>
#include <string>
#include <vector>
#include "base/bind.h"
#include "base/cxx17_backports.h"
#include "base/strings/string_util.h"
#include "base/time/time.h"
#include "media/base/media_util.h"
#include "media/base/stream_parser_buffer.h"
#include "media/base/timestamp_constants.h"
#include "media/base/video_decoder_config.h"
#include "media/formats/mp2t/es_adapter_video.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
namespace mp2t {
typedef StreamParser::BufferQueue BufferQueue;
namespace {
VideoDecoderConfig CreateFakeVideoConfig() {
gfx::Size coded_size(320, 240);
gfx::Rect visible_rect(0, 0, 320, 240);
gfx::Size natural_size(320, 240);
return VideoDecoderConfig(VideoCodec::kH264, H264PROFILE_MAIN,
VideoDecoderConfig::AlphaMode::kIsOpaque,
VideoColorSpace(), kNoTransformation, coded_size,
visible_rect, natural_size, EmptyExtraData(),
EncryptionScheme::kUnencrypted);
}
BufferQueue GenerateFakeBuffers(const int* frame_pts_ms,
const bool* is_key_frame,
size_t frame_count) {
uint8_t dummy_buffer[] = {0, 0, 0, 0};
BufferQueue buffers(frame_count);
for (size_t k = 0; k < frame_count; k++) {
buffers[k] =
StreamParserBuffer::CopyFrom(dummy_buffer, base::size(dummy_buffer),
is_key_frame[k], DemuxerStream::VIDEO, 0);
if (frame_pts_ms[k] < 0) {
buffers[k]->set_timestamp(kNoTimestamp);
} else {
buffers[k]->set_timestamp(base::Milliseconds(frame_pts_ms[k]));
}
}
return buffers;
}
} // namespace
class EsAdapterVideoTest : public testing::Test {
public:
EsAdapterVideoTest();
protected:
// Feed the ES adapter with the buffers from |buffer_queue|.
// Return the durations computed by the ES adapter as well as
// whether each frame emitted by the adapter is a key frame.
std::string RunAdapterTest(const BufferQueue& buffer_queue);
private:
void OnNewConfig(const VideoDecoderConfig& video_config);
void OnNewBuffer(scoped_refptr<StreamParserBuffer> buffer);
EsAdapterVideo es_adapter_;
std::stringstream buffer_descriptors_;
DISALLOW_COPY_AND_ASSIGN(EsAdapterVideoTest);
};
EsAdapterVideoTest::EsAdapterVideoTest()
: es_adapter_(base::BindRepeating(&EsAdapterVideoTest::OnNewConfig,
base::Unretained(this)),
base::BindRepeating(&EsAdapterVideoTest::OnNewBuffer,
base::Unretained(this))) {}
void EsAdapterVideoTest::OnNewConfig(const VideoDecoderConfig& video_config) {
}
void EsAdapterVideoTest::OnNewBuffer(
scoped_refptr<StreamParserBuffer> buffer) {
buffer_descriptors_ << "(" << buffer->duration().InMilliseconds() << ","
<< (buffer->is_key_frame() ? "Y" : "N") << ") ";
}
std::string EsAdapterVideoTest::RunAdapterTest(
const BufferQueue& buffer_queue) {
buffer_descriptors_.clear();
es_adapter_.OnConfigChanged(CreateFakeVideoConfig());
for (BufferQueue::const_iterator it = buffer_queue.begin();
it != buffer_queue.end(); ++it) {
es_adapter_.OnNewBuffer(*it);
}
es_adapter_.Flush();
std::string s = buffer_descriptors_.str();
base::TrimWhitespaceASCII(s, base::TRIM_ALL, &s);
return s;
}
TEST_F(EsAdapterVideoTest, FrameDurationSimpleGop) {
// PTS for a GOP without B frames - strictly increasing.
int pts_ms[] = {30, 31, 33, 36, 40, 45, 51, 58};
bool is_key_frame[] = {
true, false, false, false,
false, false, false, false };
BufferQueue buffer_queue =
GenerateFakeBuffers(pts_ms, is_key_frame, base::size(pts_ms));
EXPECT_EQ("(1,Y) (2,N) (3,N) (4,N) (5,N) (6,N) (7,N) (7,N)",
RunAdapterTest(buffer_queue));
}
TEST_F(EsAdapterVideoTest, FrameDurationComplexGop) {
// PTS for a GOP with B frames.
int pts_ms[] = {30, 120, 60, 90, 210, 150, 180, 300, 240, 270};
bool is_key_frame[] = {
true, false, false, false, false,
false, false, false, false, false };
BufferQueue buffer_queue =
GenerateFakeBuffers(pts_ms, is_key_frame, base::size(pts_ms));
EXPECT_EQ("(30,Y) (30,N) (30,N) (30,N) (30,N) "
"(30,N) (30,N) (30,N) (30,N) (30,N)",
RunAdapterTest(buffer_queue));
}
TEST_F(EsAdapterVideoTest, LeadingNonKeyFrames) {
int pts_ms[] = {30, 40, 50, 120, 150, 180};
bool is_key_frame[] = {false, false, false, true, false, false};
BufferQueue buffer_queue =
GenerateFakeBuffers(pts_ms, is_key_frame, base::size(pts_ms));
EXPECT_EQ("(30,Y) (30,Y) (30,Y) (30,Y) (30,N) (30,N)",
RunAdapterTest(buffer_queue));
}
TEST_F(EsAdapterVideoTest, LeadingKeyFrameWithNoTimestamp) {
int pts_ms[] = {-1, 40, 50, 120, 150, 180};
bool is_key_frame[] = {true, false, false, true, false, false};
BufferQueue buffer_queue =
GenerateFakeBuffers(pts_ms, is_key_frame, base::size(pts_ms));
EXPECT_EQ("(40,Y) (40,Y) (30,Y) (30,N) (30,N)",
RunAdapterTest(buffer_queue));
}
TEST_F(EsAdapterVideoTest, LeadingFramesWithNoTimestamp) {
int pts_ms[] = {-1, -1, 50, 120, 150, 180};
bool is_key_frame[] = {false, false, false, true, false, false};
BufferQueue buffer_queue =
GenerateFakeBuffers(pts_ms, is_key_frame, base::size(pts_ms));
EXPECT_EQ("(70,Y) (30,Y) (30,N) (30,N)",
RunAdapterTest(buffer_queue));
}
} // namespace mp2t
} // namespace media
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