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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/base/decoder_buffer.h"
#include <sstream>
#include "base/debug/alias.h"
namespace media {
DecoderBuffer::TimeInfo::TimeInfo() = default;
DecoderBuffer::TimeInfo::~TimeInfo() = default;
DecoderBuffer::TimeInfo::TimeInfo(const TimeInfo&) = default;
DecoderBuffer::TimeInfo& DecoderBuffer::TimeInfo::operator=(const TimeInfo&) =
default;
DecoderBuffer::DecoderBuffer(size_t size)
: size_(size), side_data_size_(0), is_key_frame_(false) {
Initialize();
}
DecoderBuffer::DecoderBuffer(const uint8_t* data,
size_t size,
const uint8_t* side_data,
size_t side_data_size)
: size_(size), side_data_size_(side_data_size), is_key_frame_(false) {
if (!data) {
CHECK_EQ(size_, 0u);
CHECK(!side_data);
return;
}
Initialize();
memcpy(data_.get(), data, size_);
if (!side_data) {
CHECK_EQ(side_data_size, 0u);
return;
}
DCHECK_GT(side_data_size_, 0u);
memcpy(side_data_.get(), side_data, side_data_size_);
}
DecoderBuffer::DecoderBuffer(std::unique_ptr<uint8_t[]> data, size_t size)
: data_(std::move(data)), size_(size) {}
DecoderBuffer::DecoderBuffer(base::ReadOnlySharedMemoryMapping mapping,
size_t size)
: size_(size), read_only_mapping_(std::move(mapping)) {}
DecoderBuffer::DecoderBuffer(base::WritableSharedMemoryMapping mapping,
size_t size)
: size_(size), writable_mapping_(std::move(mapping)) {}
DecoderBuffer::~DecoderBuffer() {
data_.reset();
side_data_.reset();
}
void DecoderBuffer::Initialize() {
data_.reset(new uint8_t[size_]);
if (side_data_size_ > 0)
side_data_.reset(new uint8_t[side_data_size_]);
}
// static
scoped_refptr<DecoderBuffer> DecoderBuffer::CopyFrom(const uint8_t* data,
size_t data_size) {
// If you hit this CHECK you likely have a bug in a demuxer. Go fix it.
CHECK(data);
return base::WrapRefCounted(new DecoderBuffer(data, data_size, NULL, 0));
}
// static
scoped_refptr<DecoderBuffer> DecoderBuffer::CopyFrom(const uint8_t* data,
size_t data_size,
const uint8_t* side_data,
size_t side_data_size) {
// If you hit this CHECK you likely have a bug in a demuxer. Go fix it.
CHECK(data);
CHECK(side_data);
return base::WrapRefCounted(
new DecoderBuffer(data, data_size, side_data, side_data_size));
}
// static
scoped_refptr<DecoderBuffer> DecoderBuffer::FromArray(
std::unique_ptr<uint8_t[]> data,
size_t size) {
CHECK(data);
return base::WrapRefCounted(new DecoderBuffer(std::move(data), size));
}
// static
scoped_refptr<DecoderBuffer> DecoderBuffer::FromSharedMemoryRegion(
base::UnsafeSharedMemoryRegion region,
uint64_t offset,
size_t size) {
if (size == 0) {
return nullptr;
}
auto mapping = region.MapAt(offset, size);
if (!mapping.IsValid()) {
return nullptr;
}
return base::WrapRefCounted(new DecoderBuffer(std::move(mapping), size));
}
// static
scoped_refptr<DecoderBuffer> DecoderBuffer::FromSharedMemoryRegion(
base::ReadOnlySharedMemoryRegion region,
uint64_t offset,
size_t size) {
if (size == 0) {
return nullptr;
}
auto mapping = region.MapAt(offset, size);
if (!mapping.IsValid()) {
return nullptr;
}
return base::WrapRefCounted(new DecoderBuffer(std::move(mapping), size));
}
// static
scoped_refptr<DecoderBuffer> DecoderBuffer::CreateEOSBuffer() {
return base::WrapRefCounted(new DecoderBuffer(NULL, 0, NULL, 0));
}
bool DecoderBuffer::MatchesMetadataForTesting(
const DecoderBuffer& buffer) const {
if (end_of_stream() != buffer.end_of_stream())
return false;
// It is illegal to call any member function if eos is true.
if (end_of_stream())
return true;
if (timestamp() != buffer.timestamp() || duration() != buffer.duration() ||
is_key_frame() != buffer.is_key_frame() ||
discard_padding() != buffer.discard_padding()) {
return false;
}
if ((decrypt_config() == nullptr) != (buffer.decrypt_config() == nullptr))
return false;
return decrypt_config() ? decrypt_config()->Matches(*buffer.decrypt_config())
: true;
}
bool DecoderBuffer::MatchesForTesting(const DecoderBuffer& buffer) const {
if (!MatchesMetadataForTesting(buffer)) // IN-TEST
return false;
// It is illegal to call any member function if eos is true.
if (end_of_stream())
return true;
DCHECK(!buffer.end_of_stream());
return data_size() == buffer.data_size() &&
side_data_size() == buffer.side_data_size() &&
memcmp(data(), buffer.data(), data_size()) == 0 &&
memcmp(side_data(), buffer.side_data(), side_data_size()) == 0;
}
std::string DecoderBuffer::AsHumanReadableString(bool verbose) const {
if (end_of_stream())
return "EOS";
std::ostringstream s;
s << "{timestamp=" << time_info_.timestamp.InMicroseconds()
<< " duration=" << time_info_.duration.InMicroseconds() << " size=" << size_
<< " is_key_frame=" << is_key_frame_
<< " encrypted=" << (decrypt_config_ != nullptr);
if (verbose) {
s << " side_data_size=" << side_data_size_ << " discard_padding (us)=("
<< time_info_.discard_padding.first.InMicroseconds() << ", "
<< time_info_.discard_padding.second.InMicroseconds() << ")";
if (decrypt_config_)
s << " decrypt_config=" << (*decrypt_config_);
}
s << "}";
return s.str();
}
void DecoderBuffer::set_timestamp(base::TimeDelta timestamp) {
DCHECK(!end_of_stream());
time_info_.timestamp = timestamp;
}
void DecoderBuffer::CopySideDataFrom(const uint8_t* side_data,
size_t side_data_size) {
if (side_data_size > 0) {
side_data_size_ = side_data_size;
side_data_.reset(new uint8_t[side_data_size_]);
memcpy(side_data_.get(), side_data, side_data_size_);
} else {
side_data_.reset();
side_data_size_ = 0;
}
}
} // namespace media
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