| // Copyright 2016 Google Inc. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef STARBOARD_SHARED_FFMPEG_FFMPEG_VIDEO_DECODER_H_ |
| #define STARBOARD_SHARED_FFMPEG_FFMPEG_VIDEO_DECODER_H_ |
| |
| #include "starboard/log.h" |
| #include "starboard/media.h" |
| #include "starboard/queue.h" |
| #include "starboard/shared/ffmpeg/ffmpeg_common.h" |
| #include "starboard/shared/internal_only.h" |
| #include "starboard/shared/starboard/player/filter/video_decoder_internal.h" |
| #include "starboard/shared/starboard/player/input_buffer_internal.h" |
| #include "starboard/shared/starboard/player/video_frame_internal.h" |
| #include "starboard/thread.h" |
| |
| namespace starboard { |
| namespace shared { |
| namespace ffmpeg { |
| |
| class VideoDecoder : public starboard::player::filter::VideoDecoder { |
| public: |
| typedef starboard::player::InputBuffer InputBuffer; |
| typedef starboard::player::VideoFrame VideoFrame; |
| |
| explicit VideoDecoder(SbMediaVideoCodec video_codec); |
| ~VideoDecoder() SB_OVERRIDE; |
| |
| void SetHost(Host* host) SB_OVERRIDE; |
| void WriteInputBuffer(const InputBuffer& input_buffer) SB_OVERRIDE; |
| void WriteEndOfStream() SB_OVERRIDE; |
| void Reset() SB_OVERRIDE; |
| |
| bool is_valid() const { return codec_context_ != NULL; } |
| |
| private: |
| enum EventType { |
| kInvalid, |
| kReset, |
| kWriteInputBuffer, |
| kWriteEndOfStream, |
| }; |
| |
| struct Event { |
| EventType type; |
| // |input_buffer| is only used when |type| is kWriteInputBuffer. |
| InputBuffer input_buffer; |
| |
| explicit Event(EventType type = kInvalid) : type(type) { |
| SB_DCHECK(type != kWriteInputBuffer); |
| } |
| |
| explicit Event(InputBuffer input_buffer) |
| : type(kWriteInputBuffer), input_buffer(input_buffer) {} |
| }; |
| |
| static void* ThreadEntryPoint(void* context); |
| void DecoderThreadFunc(); |
| |
| bool DecodePacket(AVPacket* packet); |
| void InitializeCodec(); |
| void TeardownCodec(); |
| |
| // These variables will be initialized inside ctor or SetHost() and will not |
| // be changed during the life time of this class. |
| const SbMediaVideoCodec video_codec_; |
| Host* host_; |
| |
| Queue<Event> queue_; |
| |
| // The AV related classes will only be created and accessed on the decoder |
| // thread. |
| AVCodecContext* codec_context_; |
| AVFrame* av_frame_; |
| |
| bool stream_ended_; |
| bool error_occured_; |
| |
| // Working thread to avoid lengthy decoding work block the player thread. |
| SbThread decoder_thread_; |
| }; |
| |
| } // namespace ffmpeg |
| } // namespace shared |
| } // namespace starboard |
| |
| #endif // STARBOARD_SHARED_FFMPEG_FFMPEG_VIDEO_DECODER_H_ |