ffmpeg_video_decoder.h revision 7dbb3d5cf0c15f500944d211057644d6a2f37371
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 82a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <list> 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/callback.h" 11c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles)#include "base/memory/weak_ptr.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/base/video_decoder.h" 137dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#include "media/base/video_decoder_config.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct AVCodecContext; 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct AVFrame; 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace base { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class MessageLoopProxy; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace media { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class DecoderBuffer; 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class MEDIA_EXPORT FFmpegVideoDecoder : public VideoDecoder { 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) explicit FFmpegVideoDecoder( 292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) const scoped_refptr<base::MessageLoopProxy>& message_loop); 30c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) virtual ~FFmpegVideoDecoder(); 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // VideoDecoder implementation. 337dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch virtual void Initialize(const VideoDecoderConfig& config, 347dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch const PipelineStatusCB& status_cb) OVERRIDE; 357dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch virtual void Decode(const scoped_refptr<DecoderBuffer>& buffer, 367dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch const ReadCB& read_cb) OVERRIDE; 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void Reset(const base::Closure& closure) OVERRIDE; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void Stop(const base::Closure& closure) OVERRIDE; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Callback called from within FFmpeg to allocate a buffer based on 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the dimensions of |codec_context|. See AVCodecContext.get_buffer 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // documentation inside FFmpeg. 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int GetVideoBuffer(AVCodecContext *codec_context, AVFrame* frame); 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum DecoderState { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kUninitialized, 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kNormal, 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kFlushCodec, 50c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) kDecodeFinished, 51c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) kError 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 542a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Handles decoding an unencrypted encoded buffer. 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DecodeBuffer(const scoped_refptr<DecoderBuffer>& buffer); 567dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch bool FFmpegDecode(const scoped_refptr<DecoderBuffer>& buffer, 577dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch scoped_refptr<VideoFrame>* video_frame); 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Handles (re-)initializing the decoder with a (new) config. 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if initialization was successful. 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ConfigureDecoder(); 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Releases resources associated with |codec_context_| and |av_frame_| 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and resets them to NULL. 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void ReleaseFFmpegResources(); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Reset decoder and call |reset_cb_|. 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DoReset(); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<base::MessageLoopProxy> message_loop_; 71c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::WeakPtrFactory<FFmpegVideoDecoder> weak_factory_; 72c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::WeakPtr<FFmpegVideoDecoder> weak_this_; 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DecoderState state_; 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReadCB read_cb_; 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Closure reset_cb_; 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FFmpeg structures owned by this object. 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AVCodecContext* codec_context_; 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) AVFrame* av_frame_; 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 837dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch VideoDecoderConfig config_; 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(FFmpegVideoDecoder); 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace media 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // MEDIA_FILTERS_FFMPEG_VIDEO_DECODER_H_ 91