| // Copyright 2018 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_IMPL_H_ |
| #define STARBOARD_SHARED_FFMPEG_FFMPEG_VIDEO_DECODER_IMPL_H_ |
| |
| #include "starboard/common/ref_counted.h" |
| #include "starboard/log.h" |
| #include "starboard/media.h" |
| #include "starboard/queue.h" |
| #include "starboard/shared/ffmpeg/ffmpeg_common.h" |
| #include "starboard/shared/ffmpeg/ffmpeg_dispatch.h" |
| #include "starboard/shared/ffmpeg/ffmpeg_video_decoder.h" |
| #include "starboard/shared/internal_only.h" |
| #include "starboard/shared/starboard/player/filter/cpu_video_frame.h" |
| #include "starboard/shared/starboard/player/filter/video_decoder_internal.h" |
| #include "starboard/shared/starboard/player/input_buffer_internal.h" |
| #include "starboard/thread.h" |
| |
| namespace starboard { |
| namespace shared { |
| namespace ffmpeg { |
| |
| // For each version V that is supported, there will be an explicit |
| // specialization of the VideoDecoder class. |
| template <int V> |
| class VideoDecoderImpl : public VideoDecoder { |
| public: |
| static VideoDecoder* Create(SbMediaVideoCodec video_codec, |
| SbPlayerOutputMode output_mode, |
| SbDecodeTargetGraphicsContextProvider* |
| decode_target_graphics_context_provider); |
| }; |
| |
| // Forward class declaration of the explicit specialization with value FFMPEG. |
| template <> |
| class VideoDecoderImpl<FFMPEG>; |
| |
| // Declare the explicit specialization of the class with value FFMPEG. |
| template <> |
| class VideoDecoderImpl<FFMPEG> : public VideoDecoder { |
| public: |
| VideoDecoderImpl(SbMediaVideoCodec video_codec, |
| SbPlayerOutputMode output_mode, |
| SbDecodeTargetGraphicsContextProvider* |
| decode_target_graphics_context_provider); |
| ~VideoDecoderImpl() override; |
| |
| // From: VideoDecoder |
| static VideoDecoder* Create(SbMediaVideoCodec video_codec, |
| SbPlayerOutputMode output_mode, |
| SbDecodeTargetGraphicsContextProvider* |
| decode_target_graphics_context_provider); |
| bool is_valid() const override; |
| |
| // From: starboard::player::filter::VideoDecoder |
| void Initialize(const DecoderStatusCB& decoder_status_cb, |
| const ErrorCB& error_cb) override; |
| size_t GetPrerollFrameCount() const override { return 8; } |
| SbTime GetPrerollTimeout() const override { return kSbTimeMax; } |
| |
| void WriteInputBuffer( |
| const scoped_refptr<InputBuffer>& input_buffer) override; |
| void WriteEndOfStream() override; |
| void Reset() override; |
| |
| #if LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(52, 8, 0) |
| int AllocateBuffer(AVCodecContext* codec_context, AVFrame* frame, int flags); |
| #else // LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(52, 8, 0) |
| int AllocateBuffer(AVCodecContext* codec_context, AVFrame* frame); |
| #endif // LIBAVUTIL_VERSION_INT >= AV_VERSION_INT(52, 8, 0) |
| |
| private: |
| typedef ::starboard::shared::starboard::player::filter::CpuVideoFrame |
| CpuVideoFrame; |
| |
| enum EventType { |
| kInvalid, |
| kReset, |
| kWriteInputBuffer, |
| kWriteEndOfStream, |
| }; |
| |
| struct Event { |
| EventType type; |
| // |input_buffer| is only used when |type| is kWriteInputBuffer. |
| scoped_refptr<InputBuffer> input_buffer; |
| |
| explicit Event(EventType type = kInvalid) : type(type) { |
| SB_DCHECK(type != kWriteInputBuffer); |
| } |
| |
| explicit Event(const scoped_refptr<InputBuffer>& input_buffer) |
| : type(kWriteInputBuffer), input_buffer(input_buffer) {} |
| }; |
| |
| static void* ThreadEntryPoint(void* context); |
| void DecoderThreadFunc(); |
| |
| bool DecodePacket(AVPacket* packet); |
| void InitializeCodec(); |
| void TeardownCodec(); |
| SbDecodeTarget GetCurrentDecodeTarget() override; |
| |
| bool UpdateDecodeTarget(const scoped_refptr<CpuVideoFrame>& frame); |
| |
| FFMPEGDispatch* ffmpeg_; |
| |
| // |video_codec_| will be initialized inside ctor and won't be changed during |
| // the life time of this class. |
| const SbMediaVideoCodec video_codec_; |
| // The following callbacks will be initialized in Initialize() and won't be |
| // changed during the life time of this class. |
| DecoderStatusCB decoder_status_cb_; |
| ErrorCB error_cb_; |
| |
| 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_; |
| |
| // Decode-to-texture related state. |
| SbPlayerOutputMode output_mode_; |
| |
| SbDecodeTargetGraphicsContextProvider* |
| decode_target_graphics_context_provider_; |
| |
| // If decode-to-texture is enabled, then we store the decode target texture |
| // inside of this |decode_target_| member. |
| SbDecodeTarget decode_target_; |
| |
| // GetCurrentDecodeTarget() needs to be called from an arbitrary thread |
| // to obtain the current decode target (which ultimately ends up being a |
| // copy of |decode_target_|), we need to safe-guard access to |decode_target_| |
| // and we do so through this mutex. |
| Mutex decode_target_mutex_; |
| // Mutex frame_mutex_; |
| |
| // int frame_last_rendered_pts_; |
| // scoped_refptr<VideoFrame> frame_; |
| }; |
| |
| } // namespace ffmpeg |
| } // namespace shared |
| } // namespace starboard |
| |
| #endif // STARBOARD_SHARED_FFMPEG_FFMPEG_VIDEO_DECODER_IMPL_H_ |