| // 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_STARBOARD_PLAYER_FILTER_VIDEO_RENDERER_IMPL_INTERNAL_H_ |
| #define STARBOARD_SHARED_STARBOARD_PLAYER_FILTER_VIDEO_RENDERER_IMPL_INTERNAL_H_ |
| |
| #include <list> |
| |
| #include "starboard/common/ref_counted.h" |
| #include "starboard/log.h" |
| #include "starboard/media.h" |
| #include "starboard/mutex.h" |
| #include "starboard/shared/internal_only.h" |
| #include "starboard/shared/starboard/player/filter/video_decoder_internal.h" |
| #include "starboard/shared/starboard/player/filter/video_renderer_internal.h" |
| #include "starboard/shared/starboard/player/input_buffer_internal.h" |
| #include "starboard/shared/starboard/player/video_frame_internal.h" |
| #include "starboard/shared/starboard/thread_checker.h" |
| |
| namespace starboard { |
| namespace shared { |
| namespace starboard { |
| namespace player { |
| namespace filter { |
| |
| // A default implementation of |VideoRenderer| that only depends on the |
| // |HostedVideoDecoder| interface, rather than a platform specific |
| // implementation. |
| class VideoRendererImpl : public VideoRenderer, |
| private HostedVideoDecoder::Host { |
| public: |
| explicit VideoRendererImpl(scoped_ptr<HostedVideoDecoder> decoder); |
| |
| int GetDroppedFrames() const SB_OVERRIDE { return dropped_frames_; } |
| |
| void WriteSample(const scoped_refptr<InputBuffer>& input_buffer) SB_OVERRIDE; |
| void WriteEndOfStream() SB_OVERRIDE; |
| |
| void Seek(SbMediaTime seek_to_pts) SB_OVERRIDE; |
| |
| scoped_refptr<VideoFrame> GetCurrentFrame(SbMediaTime media_time) SB_OVERRIDE; |
| |
| bool IsEndOfStreamWritten() const SB_OVERRIDE { |
| return end_of_stream_written_; |
| } |
| bool IsEndOfStreamPlayed() const SB_OVERRIDE; |
| bool CanAcceptMoreData() const SB_OVERRIDE; |
| bool IsSeekingInProgress() const SB_OVERRIDE; |
| |
| #if SB_API_VERSION >= 4 |
| SbDecodeTarget GetCurrentDecodeTarget() SB_OVERRIDE; |
| #endif // SB_API_VERSION >= 4 |
| |
| scoped_refptr<VideoFrame> GetLastDisplayedFrame(); |
| |
| private: |
| typedef std::list<scoped_refptr<VideoFrame> > Frames; |
| |
| // Preroll considered finished after either kPrerollFrames is cached or EOS |
| // is reached. |
| static const size_t kPrerollFrames = 1; |
| // Set a soft limit for the max video frames we can cache so we can: |
| // 1. Avoid using too much memory. |
| // 2. Have the frame cache full to simulate the state that the renderer can |
| // no longer accept more data. |
| static const size_t kMaxCachedFrames = 12; |
| |
| // VideoDecoder::Host method. |
| void OnDecoderStatusUpdate(VideoDecoder::Status status, |
| const scoped_refptr<VideoFrame>& frame) |
| SB_OVERRIDE; |
| |
| ThreadChecker thread_checker_; |
| ::starboard::Mutex mutex_; |
| |
| bool seeking_; |
| Frames frames_; |
| |
| // During seeking, all frames inside |frames_| will be cleared but the app |
| // should still display the last frame it is rendering. This frame will be |
| // kept inside |last_displayed_frame_|. It is an empty/black frame before the |
| // video is started. |
| scoped_refptr<VideoFrame> last_displayed_frame_; |
| |
| SbMediaTime seeking_to_pts_; |
| bool end_of_stream_written_; |
| bool need_more_input_; |
| int dropped_frames_; |
| |
| scoped_ptr<HostedVideoDecoder> decoder_; |
| |
| // Our owner will attempt to seek to pts 0 when playback begins. In |
| // general, seeking could require a full reset of the underlying decoder on |
| // some platforms, so we make an effort to improve playback startup |
| // performance by keeping track of whether we already have a fresh decoder, |
| // and can thus avoid doing a full reset. |
| bool decoder_needs_full_reset_; |
| }; |
| |
| } // namespace filter |
| } // namespace player |
| } // namespace starboard |
| } // namespace shared |
| } // namespace starboard |
| |
| #endif // STARBOARD_SHARED_STARBOARD_PLAYER_FILTER_VIDEO_RENDERER_IMPL_INTERNAL_H_ |