| // 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. |
| |
| #ifndef MEDIA_MOJO_COMMON_MOJO_DECODER_BUFFER_CONVERTER_ |
| #define MEDIA_MOJO_COMMON_MOJO_DECODER_BUFFER_CONVERTER_ |
| |
| #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 { |
| public: |
| // 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); |
| |
| ~MojoDecoderBufferReader(); |
| |
| // 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); |
| |
| private: |
| // For reading the data section of a DecoderBuffer. |
| mojo::ScopedDataPipeConsumerHandle consumer_handle_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MojoDecoderBufferReader); |
| }; |
| |
| // A helper class that converts media::DecoderBuffer to mojom::DecoderBuffer. |
| // The data part of the DecoderBuffer is written into a DataPipe. |
| class MojoDecoderBufferWriter { |
| public: |
| // 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); |
| |
| ~MojoDecoderBufferWriter(); |
| |
| // 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); |
| |
| private: |
| // For writing the data section of DecoderBuffer into DataPipe. |
| mojo::ScopedDataPipeProducerHandle producer_handle_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MojoDecoderBufferWriter); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_MOJO_COMMON_MOJO_DECODER_BUFFER_CONVERTER_ |