| // 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. |
| |
| #ifndef PPAPI_SHARED_IMPL_MEDIA_STREAM_BUFFER_H_ |
| #define PPAPI_SHARED_IMPL_MEDIA_STREAM_BUFFER_H_ |
| |
| #include <stdint.h> |
| |
| #include "ppapi/c/ppb_audio_buffer.h" |
| #include "ppapi/c/ppb_video_frame.h" |
| |
| namespace ppapi { |
| |
| union MediaStreamBuffer { |
| enum Type { |
| TYPE_UNKNOWN = 0, |
| TYPE_AUDIO = 1, |
| TYPE_VIDEO = 2, |
| TYPE_BITSTREAM = 3 |
| }; |
| |
| struct Header { |
| Type type; |
| uint32_t size; |
| }; |
| |
| struct Audio { |
| Header header; |
| PP_TimeDelta timestamp; |
| PP_AudioBuffer_SampleRate sample_rate; |
| uint32_t number_of_channels; |
| uint32_t number_of_samples; |
| uint32_t data_size; |
| // Uses 8 bytes to make sure the Audio struct has consistent size between |
| // NaCl code and renderer code. |
| uint8_t data[8]; |
| }; |
| |
| struct Video { |
| Header header; |
| PP_TimeDelta timestamp; |
| PP_VideoFrame_Format format; |
| PP_Size size; |
| uint32_t data_size; |
| // Uses 8 bytes to make sure the Video struct has consistent size between |
| // NaCl code and renderer code. |
| uint8_t data[8]; |
| }; |
| |
| struct Bitstream { |
| Header header; |
| uint32_t data_size; |
| // Uses 8 bytes to make sure the Bitstream struct has consistent size |
| // between NaCl code and renderer code. |
| uint8_t data[8]; |
| }; |
| |
| // Because these structs are written and read in shared memory, we need |
| // the size and alighment to be consistent between NaCl and its host trusted |
| // platform. |
| PP_COMPILE_ASSERT_SIZE_IN_BYTES(Header, 8); |
| PP_COMPILE_ASSERT_SIZE_IN_BYTES(Audio, 40); |
| PP_COMPILE_ASSERT_SIZE_IN_BYTES(Video, 40); |
| PP_COMPILE_ASSERT_SIZE_IN_BYTES(Bitstream, 20); |
| |
| Header header; |
| Video video; |
| Audio audio; |
| Bitstream bitstream; |
| }; |
| |
| } // namespace ppapi |
| |
| #endif // PPAPI_SHARED_IMPL_MEDIA_STREAM_BUFFER_H_ |