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// Copyright 2016 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 <memory>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "media/base/demuxer_stream.h"
#include "media/mojo/interfaces/media_types.mojom.h"
#include "mojo/public/cpp/system/data_pipe.h"
namespace media {
class DecoderBuffer;
// A helper class that converts mojom::DecoderBuffer to media::DecoderBuffer.
// The data part of the DecoderBuffer is read from a DataPipe.
class MojoDecoderBufferReader {
// Creates a MojoDecoderBufferReader of |type| and set the |producer_handle|.
static std::unique_ptr<MojoDecoderBufferReader> Create(
DemuxerStream::Type type,
mojo::ScopedDataPipeProducerHandle* producer_handle);
// Hold the consumer handle to read DecoderBuffer data.
explicit MojoDecoderBufferReader(
mojo::ScopedDataPipeConsumerHandle consumer_handle);
// Converts |buffer| into a DecoderBuffer (read data from DataPipe if needed).
// Returns the result DecoderBuffer. Returns null in case of an error.
scoped_refptr<DecoderBuffer> ReadDecoderBuffer(
const mojom::DecoderBufferPtr& buffer);
// For reading the data section of a DecoderBuffer.
mojo::ScopedDataPipeConsumerHandle consumer_handle_;
// A helper class that converts media::DecoderBuffer to mojom::DecoderBuffer.
// The data part of the DecoderBuffer is written into a DataPipe.
class MojoDecoderBufferWriter {
// Creates a MojoDecoderBufferWriter of |type| and set the |consumer_handle|.
static std::unique_ptr<MojoDecoderBufferWriter> Create(
DemuxerStream::Type type,
mojo::ScopedDataPipeConsumerHandle* consumer_handle);
// Hold the producer handle to write DecoderBuffer data.
explicit MojoDecoderBufferWriter(
mojo::ScopedDataPipeProducerHandle producer_handle);
// Converts a DecoderBuffer into mojo DecoderBuffer, writing data into
// DataPipe if needed. Returns null if conversion failed.
mojom::DecoderBufferPtr WriteDecoderBuffer(
const scoped_refptr<DecoderBuffer>& media_buffer);
// For writing the data section of DecoderBuffer into DataPipe.
mojo::ScopedDataPipeProducerHandle producer_handle_;
} // namespace media