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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 <algorithm>
#include <string>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
#include "media/base/audio_decoder_config.h"
#include "media/base/decoder_buffer.h"
#include "media/base/stream_parser_buffer.h"
#include "media/base/test_data_util.h"
#include "media/base/text_track_config.h"
#include "media/base/video_decoder_config.h"
#include "media/formats/mp2t/mp2t_stream_parser.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace media {
namespace mp2t {
class Mp2tStreamParserTest : public testing::Test {
public:
Mp2tStreamParserTest()
: audio_frame_count_(0),
video_frame_count_(0),
video_min_dts_(kNoTimestamp()),
video_max_dts_(kNoTimestamp()) {
bool has_sbr = false;
parser_.reset(new Mp2tStreamParser(has_sbr));
}
protected:
scoped_ptr<Mp2tStreamParser> parser_;
int audio_frame_count_;
int video_frame_count_;
base::TimeDelta video_min_dts_;
base::TimeDelta video_max_dts_;
bool AppendData(const uint8* data, size_t length) {
return parser_->Parse(data, length);
}
bool AppendDataInPieces(const uint8* data, size_t length, size_t piece_size) {
const uint8* start = data;
const uint8* end = data + length;
while (start < end) {
size_t append_size = std::min(piece_size,
static_cast<size_t>(end - start));
if (!AppendData(start, append_size))
return false;
start += append_size;
}
return true;
}
void OnInit(bool init_ok, base::TimeDelta duration) {
DVLOG(1) << "OnInit: ok=" << init_ok
<< ", dur=" << duration.InMilliseconds();
}
bool OnNewConfig(const AudioDecoderConfig& ac,
const VideoDecoderConfig& vc,
const StreamParser::TextTrackConfigMap& tc) {
DVLOG(1) << "OnNewConfig: audio=" << ac.IsValidConfig()
<< ", video=" << vc.IsValidConfig();
return true;
}
void DumpBuffers(const std::string& label,
const StreamParser::BufferQueue& buffers) {
DVLOG(2) << "DumpBuffers: " << label << " size " << buffers.size();
for (StreamParser::BufferQueue::const_iterator buf = buffers.begin();
buf != buffers.end(); buf++) {
DVLOG(3) << " n=" << buf - buffers.begin()
<< ", size=" << (*buf)->data_size()
<< ", dur=" << (*buf)->duration().InMilliseconds();
}
}
bool OnNewBuffers(const StreamParser::BufferQueue& audio_buffers,
const StreamParser::BufferQueue& video_buffers,
const StreamParser::TextBufferQueueMap& text_map) {
DumpBuffers("audio_buffers", audio_buffers);
DumpBuffers("video_buffers", video_buffers);
audio_frame_count_ += audio_buffers.size();
video_frame_count_ += video_buffers.size();
// TODO(wolenetz/acolwell): Add text track support to more MSE parsers. See
// http://crbug.com/336926.
if (!text_map.empty())
return false;
if (video_min_dts_ == kNoTimestamp() && !video_buffers.empty())
video_min_dts_ = video_buffers.front()->GetDecodeTimestamp();
if (!video_buffers.empty()) {
video_max_dts_ = video_buffers.back()->GetDecodeTimestamp();
// Verify monotonicity.
StreamParser::BufferQueue::const_iterator it1 = video_buffers.begin();
StreamParser::BufferQueue::const_iterator it2 = ++it1;
for ( ; it2 != video_buffers.end(); ++it1, ++it2) {
if ((*it2)->GetDecodeTimestamp() < (*it1)->GetDecodeTimestamp())
return false;
}
}
return true;
}
void OnKeyNeeded(const std::string& type,
const std::vector<uint8>& init_data) {
DVLOG(1) << "OnKeyNeeded: " << init_data.size();
}
void OnNewSegment() {
DVLOG(1) << "OnNewSegment";
}
void OnEndOfSegment() {
DVLOG(1) << "OnEndOfSegment()";
}
void InitializeParser() {
parser_->Init(
base::Bind(&Mp2tStreamParserTest::OnInit,
base::Unretained(this)),
base::Bind(&Mp2tStreamParserTest::OnNewConfig,
base::Unretained(this)),
base::Bind(&Mp2tStreamParserTest::OnNewBuffers,
base::Unretained(this)),
true,
base::Bind(&Mp2tStreamParserTest::OnKeyNeeded,
base::Unretained(this)),
base::Bind(&Mp2tStreamParserTest::OnNewSegment,
base::Unretained(this)),
base::Bind(&Mp2tStreamParserTest::OnEndOfSegment,
base::Unretained(this)),
LogCB());
}
bool ParseMpeg2TsFile(const std::string& filename, int append_bytes) {
InitializeParser();
scoped_refptr<DecoderBuffer> buffer = ReadTestDataFile(filename);
EXPECT_TRUE(AppendDataInPieces(buffer->data(),
buffer->data_size(),
append_bytes));
return true;
}
};
TEST_F(Mp2tStreamParserTest, UnalignedAppend17) {
// Test small, non-segment-aligned appends.
ParseMpeg2TsFile("bear-1280x720.ts", 17);
EXPECT_EQ(video_frame_count_, 81);
parser_->Flush();
EXPECT_EQ(video_frame_count_, 82);
}
TEST_F(Mp2tStreamParserTest, UnalignedAppend512) {
// Test small, non-segment-aligned appends.
ParseMpeg2TsFile("bear-1280x720.ts", 512);
EXPECT_EQ(video_frame_count_, 81);
parser_->Flush();
EXPECT_EQ(video_frame_count_, 82);
}
TEST_F(Mp2tStreamParserTest, TimestampWrapAround) {
// "bear-1280x720_ptswraparound.ts" has been transcoded
// from bear-1280x720.mp4 by applying a time offset of 95442s
// (close to 2^33 / 90000) which results in timestamps wrap around
// in the Mpeg2 TS stream.
ParseMpeg2TsFile("bear-1280x720_ptswraparound.ts", 512);
EXPECT_EQ(video_frame_count_, 81);
EXPECT_GE(video_min_dts_, base::TimeDelta::FromSeconds(95443 - 10));
EXPECT_LE(video_max_dts_, base::TimeDelta::FromSeconds(95443 + 10));
}
} // namespace mp2t
} // namespace media
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