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// Copyright (c) 2013 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/fake_demuxer_stream.h"
#include <stdint.h>
#include <vector>
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/single_thread_task_runner.h"
#include "base/thread_task_runner_handle.h"
#include "media/base/bind_to_current_loop.h"
#include "media/base/decoder_buffer.h"
#include "media/base/media_util.h"
#include "media/base/test_helpers.h"
#include "media/base/timestamp_constants.h"
#include "media/base/video_frame.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
namespace media {
const int kStartTimestampMs = 0;
const int kDurationMs = 30;
const int kStartWidth = 320;
const int kStartHeight = 240;
const int kWidthDelta = 4;
const int kHeightDelta = 3;
const uint8_t kKeyId[] = {0x00, 0x01, 0x02, 0x03};
const uint8_t kIv[] = {0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
FakeDemuxerStream::FakeDemuxerStream(int num_configs,
int num_buffers_in_one_config,
bool is_encrypted)
: task_runner_(base::ThreadTaskRunnerHandle::Get()),
num_configs_(num_configs),
num_buffers_in_one_config_(num_buffers_in_one_config),
config_changes_(num_configs > 1),
is_encrypted_(is_encrypted),
read_to_hold_(-1) {
DCHECK_GT(num_configs, 0);
DCHECK_GT(num_buffers_in_one_config, 0);
Initialize();
UpdateVideoDecoderConfig();
}
FakeDemuxerStream::~FakeDemuxerStream() {}
void FakeDemuxerStream::Initialize() {
DCHECK_EQ(-1, read_to_hold_);
num_configs_left_ = num_configs_;
num_buffers_left_in_current_config_ = num_buffers_in_one_config_;
num_buffers_returned_ = 0;
current_timestamp_ = base::TimeDelta::FromMilliseconds(kStartTimestampMs);
duration_ = base::TimeDelta::FromMilliseconds(kDurationMs);
splice_timestamp_ = kNoTimestamp();
next_coded_size_ = gfx::Size(kStartWidth, kStartHeight);
next_read_num_ = 0;
}
void FakeDemuxerStream::Read(const ReadCB& read_cb) {
DCHECK(task_runner_->BelongsToCurrentThread());
DCHECK(read_cb_.is_null());
read_cb_ = BindToCurrentLoop(read_cb);
if (read_to_hold_ == next_read_num_)
return;
DCHECK(read_to_hold_ == -1 || read_to_hold_ > next_read_num_);
DoRead();
}
AudioDecoderConfig FakeDemuxerStream::audio_decoder_config() {
DCHECK(task_runner_->BelongsToCurrentThread());
NOTREACHED();
return AudioDecoderConfig();
}
VideoDecoderConfig FakeDemuxerStream::video_decoder_config() {
DCHECK(task_runner_->BelongsToCurrentThread());
return video_decoder_config_;
}
// TODO(xhwang): Support audio if needed.
DemuxerStream::Type FakeDemuxerStream::type() const {
DCHECK(task_runner_->BelongsToCurrentThread());
return VIDEO;
}
bool FakeDemuxerStream::SupportsConfigChanges() {
return config_changes_;
}
VideoRotation FakeDemuxerStream::video_rotation() {
return VIDEO_ROTATION_0;
}
void FakeDemuxerStream::HoldNextRead() {
DCHECK(task_runner_->BelongsToCurrentThread());
read_to_hold_ = next_read_num_;
}
void FakeDemuxerStream::HoldNextConfigChangeRead() {
DCHECK(task_runner_->BelongsToCurrentThread());
// Set |read_to_hold_| to be the next config change read.
read_to_hold_ = next_read_num_ + num_buffers_in_one_config_ -
next_read_num_ % (num_buffers_in_one_config_ + 1);
}
void FakeDemuxerStream::SatisfyRead() {
DCHECK(task_runner_->BelongsToCurrentThread());
DCHECK_EQ(read_to_hold_, next_read_num_);
DCHECK(!read_cb_.is_null());
read_to_hold_ = -1;
DoRead();
}
void FakeDemuxerStream::SatisfyReadAndHoldNext() {
DCHECK(task_runner_->BelongsToCurrentThread());
DCHECK_EQ(read_to_hold_, next_read_num_);
DCHECK(!read_cb_.is_null());
++read_to_hold_;
DoRead();
}
void FakeDemuxerStream::Reset() {
read_to_hold_ = -1;
if (!read_cb_.is_null())
base::ResetAndReturn(&read_cb_).Run(kAborted, NULL);
}
void FakeDemuxerStream::SeekToStart() {
Reset();
Initialize();
}
void FakeDemuxerStream::UpdateVideoDecoderConfig() {
const gfx::Rect kVisibleRect(kStartWidth, kStartHeight);
video_decoder_config_.Initialize(
kCodecVP8, VIDEO_CODEC_PROFILE_UNKNOWN, PIXEL_FORMAT_YV12,
COLOR_SPACE_UNSPECIFIED, next_coded_size_, kVisibleRect, next_coded_size_,
EmptyExtraData(),
is_encrypted_ ? AesCtrEncryptionScheme() : Unencrypted());
next_coded_size_.Enlarge(kWidthDelta, kHeightDelta);
}
void FakeDemuxerStream::DoRead() {
DCHECK(task_runner_->BelongsToCurrentThread());
DCHECK(!read_cb_.is_null());
next_read_num_++;
if (num_buffers_left_in_current_config_ == 0) {
// End of stream.
if (num_configs_left_ == 0) {
base::ResetAndReturn(&read_cb_).Run(kOk,
DecoderBuffer::CreateEOSBuffer());
return;
}
// Config change.
num_buffers_left_in_current_config_ = num_buffers_in_one_config_;
UpdateVideoDecoderConfig();
base::ResetAndReturn(&read_cb_).Run(kConfigChanged, NULL);
return;
}
scoped_refptr<DecoderBuffer> buffer = CreateFakeVideoBufferForTest(
video_decoder_config_, current_timestamp_, duration_);
// TODO(xhwang): Output out-of-order buffers if needed.
if (is_encrypted_) {
buffer->set_decrypt_config(scoped_ptr<DecryptConfig>(
new DecryptConfig(std::string(kKeyId, kKeyId + arraysize(kKeyId)),
std::string(kIv, kIv + arraysize(kIv)),
std::vector<SubsampleEntry>())));
}
buffer->set_timestamp(current_timestamp_);
buffer->set_duration(duration_);
buffer->set_splice_timestamp(splice_timestamp_);
current_timestamp_ += duration_;
num_buffers_left_in_current_config_--;
if (num_buffers_left_in_current_config_ == 0)
num_configs_left_--;
num_buffers_returned_++;
base::ResetAndReturn(&read_cb_).Run(kOk, buffer);
}
FakeDemuxerStreamProvider::FakeDemuxerStreamProvider(
int num_video_configs,
int num_video_buffers_in_one_config,
bool is_video_encrypted)
: fake_video_stream_(num_video_configs,
num_video_buffers_in_one_config,
is_video_encrypted) {
}
FakeDemuxerStreamProvider::~FakeDemuxerStreamProvider() {
}
DemuxerStream* FakeDemuxerStreamProvider::GetStream(DemuxerStream::Type type) {
if (type == DemuxerStream::Type::AUDIO)
return nullptr;
return &fake_video_stream_;
};
} // namespace media
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