| // Copyright (c) 2012 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_FILTERS_VPX_VIDEO_DECODER_H_ |
| #define MEDIA_FILTERS_VPX_VIDEO_DECODER_H_ |
| |
| #include "base/callback.h" |
| #include "media/base/demuxer_stream.h" |
| #include "media/base/video_decoder.h" |
| #include "media/base/video_decoder_config.h" |
| #include "media/base/video_frame.h" |
| #include "media/base/video_frame_pool.h" |
| |
| struct vpx_codec_ctx; |
| struct vpx_image; |
| |
| namespace base { |
| class SingleThreadTaskRunner; |
| } |
| |
| namespace media { |
| |
| // Libvpx video decoder wrapper. |
| // Note: VpxVideoDecoder accepts only YV12A VP8 content or VP9 content. This is |
| // done to avoid usurping FFmpeg for all vp8 decoding, because the FFmpeg VP8 |
| // decoder is faster than the libvpx VP8 decoder. |
| class MEDIA_EXPORT VpxVideoDecoder : public VideoDecoder { |
| public: |
| explicit VpxVideoDecoder( |
| const scoped_refptr<base::SingleThreadTaskRunner>& task_runner); |
| ~VpxVideoDecoder() override; |
| |
| // VideoDecoder implementation. |
| std::string GetDisplayName() const override; |
| void Initialize(const VideoDecoderConfig& config, |
| bool low_delay, |
| const PipelineStatusCB& status_cb, |
| const OutputCB& output_cb) override; |
| void Decode(const scoped_refptr<DecoderBuffer>& buffer, |
| const DecodeCB& decode_cb) override; |
| void Reset(const base::Closure& closure) override; |
| |
| private: |
| enum DecoderState { |
| kUninitialized, |
| kNormal, |
| kFlushCodec, |
| kDecodeFinished, |
| kError |
| }; |
| |
| // Handles (re-)initializing the decoder with a (new) config. |
| // Returns true when initialization was successful. |
| bool ConfigureDecoder(const VideoDecoderConfig& config); |
| |
| void CloseDecoder(); |
| |
| void DecodeBuffer(const scoped_refptr<DecoderBuffer>& buffer); |
| bool VpxDecode(const scoped_refptr<DecoderBuffer>& buffer, |
| scoped_refptr<VideoFrame>* video_frame); |
| |
| void CopyVpxImageTo(const vpx_image* vpx_image, |
| const struct vpx_image* vpx_image_alpha, |
| scoped_refptr<VideoFrame>* video_frame); |
| |
| scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
| |
| DecoderState state_; |
| |
| OutputCB output_cb_; |
| |
| // TODO(xhwang): Merge DecodeBuffer() into Decode() and remove this. |
| DecodeCB decode_cb_; |
| |
| VideoDecoderConfig config_; |
| |
| vpx_codec_ctx* vpx_codec_; |
| vpx_codec_ctx* vpx_codec_alpha_; |
| |
| // Memory pool used for VP9 decoding. |
| class MemoryPool; |
| scoped_refptr<MemoryPool> memory_pool_; |
| |
| VideoFramePool frame_pool_; |
| |
| DISALLOW_COPY_AND_ASSIGN(VpxVideoDecoder); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_FILTERS_VPX_VIDEO_DECODER_H_ |