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)// SourceBufferStream is a data structure that stores media Buffers in ranges. 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Buffers can be appended out of presentation order. Buffers are retrieved by 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// seeking to the desired start point and calling GetNextBuffer(). Buffers are 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// returned in sequential presentation order. 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_ 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_ 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <deque> 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <list> 152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include <string> 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <utility> 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <vector> 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/ref_counted.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/base/audio_decoder_config.h" 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/base/media_export.h" 222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "media/base/media_log.h" 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/base/ranges.h" 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/base/stream_parser_buffer.h" 25f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "media/base/text_track_config.h" 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "media/base/video_decoder_config.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace media { 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class SourceBufferRange; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// See file-level comment for complete description. 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class MEDIA_EXPORT SourceBufferStream { 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 35effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch typedef StreamParser::BufferQueue BufferQueue; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Status returned by GetNextBuffer(). 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // kSuccess: Indicates that the next buffer was returned. 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // kNeedBuffer: Indicates that we need more data before a buffer can be 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // returned. 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // kConfigChange: Indicates that the next buffer requires a config change. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) enum Status { 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kSuccess, 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kNeedBuffer, 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) kConfigChange, 467d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) kEndOfStream 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) }; 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) enum Type { 505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) kAudio, 515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) kVideo, 525d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) kText 535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) }; 545d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SourceBufferStream(const AudioDecoderConfig& audio_config, 56effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch const LogCB& log_cb, 57effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch bool splice_frames_enabled); 582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) SourceBufferStream(const VideoDecoderConfig& video_config, 59effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch const LogCB& log_cb, 60effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch bool splice_frames_enabled); 61f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) SourceBufferStream(const TextTrackConfig& text_config, 62effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch const LogCB& log_cb, 63effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch bool splice_frames_enabled); 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ~SourceBufferStream(); 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Signals that the next buffers appended are part of a new media segment 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // starting at |media_segment_start_time|. 696e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) // TODO(acolwell/wolenetz): This should be changed to a presentation 706e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) // timestamp. See http://crbug.com/402502 716e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) void OnNewMediaSegment(DecodeTimestamp media_segment_start_time); 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Add the |buffers| to the SourceBufferStream. Buffers within the queue are 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // expected to be in order, but multiple calls to Append() may add buffers out 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // of order or overlapping. Assumes all buffers within |buffers| are in 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // presentation order and are non-overlapping. 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if Append() was successful, false if |buffers| are not added. 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(vrk): Implement garbage collection. (crbug.com/125070) 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool Append(const BufferQueue& buffers); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 81bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch // Removes buffers between |start| and |end| according to the steps 82bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch // in the "Coded Frame Removal Algorithm" in the Media Source 83bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch // Extensions Spec. 84bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch // https://dvcs.w3.org/hg/html-media/raw-file/default/media-source/media-source.html#sourcebuffer-coded-frame-removal 85bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch // 86bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch // |duration| is the current duration of the presentation. It is 87bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch // required by the computation outlined in the spec. 88bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch void Remove(base::TimeDelta start, base::TimeDelta end, 89bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch base::TimeDelta duration); 90bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Changes the SourceBufferStream's state so that it will start returning 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffers starting from the closest keyframe before |timestamp|. 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Seek(base::TimeDelta timestamp); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if the SourceBufferStream has seeked to a time without 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // buffered data and is waiting for more data to be appended. 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool IsSeekPending() const; 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Notifies the SourceBufferStream that the media duration has been changed to 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |duration| so it should drop any data past that point. 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void OnSetDuration(base::TimeDelta duration); 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Fills |out_buffer| with a new buffer. Buffers are presented in order from 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the last call to Seek(), or starting with the first buffer appended if 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Seek() has not been called yet. 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |out_buffer|'s timestamp may be earlier than the |timestamp| passed to 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the last Seek() call. 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns kSuccess if |out_buffer| is filled with a valid buffer, kNeedBuffer 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // if there is not enough data buffered to fulfill the request, and 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // kConfigChange if the next buffer requires a config change. 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Status GetNextBuffer(scoped_refptr<StreamParserBuffer>* out_buffer); 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns a list of the buffered time ranges. 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Ranges<base::TimeDelta> GetBufferedTime() const; 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Returns the duration of the buffered ranges, which is equivalent 1175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // to the end timestamp of the last buffered range. If no data is buffered 1185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // then base::TimeDelta() is returned. 1195d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::TimeDelta GetBufferedDuration() const; 1205d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 1217d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // Notifies this object that end of stream has been signalled. 122ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch void MarkEndOfStream(); 1237d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 124ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch // Clear the end of stream state set by MarkEndOfStream(). 125ca12bfac764ba476d6cd062bf1dde12cc64c3f40Ben Murdoch void UnmarkEndOfStream(); 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const AudioDecoderConfig& GetCurrentAudioDecoderConfig(); 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const VideoDecoderConfig& GetCurrentVideoDecoderConfig(); 129f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) const TextTrackConfig& GetCurrentTextTrackConfig(); 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Notifies this object that the audio config has changed and buffers in 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // future Append() calls should be associated with this new config. 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool UpdateAudioConfig(const AudioDecoderConfig& config); 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Notifies this object that the video config has changed and buffers in 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // future Append() calls should be associated with this new config. 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool UpdateVideoConfig(const VideoDecoderConfig& config); 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the largest distance between two adjacent buffers in this stream, 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // or an estimate if no two adjacent buffers have been appended to the stream 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // yet. 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta GetMaxInterbufferDistance() const; 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1441320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci void set_memory_limit(int memory_limit) { 145eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch memory_limit_ = memory_limit; 146eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch } 147eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 14968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) friend class SourceBufferStreamTest; 15068043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) typedef std::list<SourceBufferRange*> RangeList; 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Frees up space if the SourceBufferStream is taking up too much memory. 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void GarbageCollectIfNeeded(); 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Attempts to delete approximately |total_bytes_to_free| amount of data 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |ranges_|, starting at the front of |ranges_| and moving linearly forward 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // through the buffers. Deletes starting from the back if |reverse_direction| 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // is true. Returns the number of bytes freed. 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int FreeBuffers(int total_bytes_to_free, bool reverse_direction); 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16268043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // Attempts to delete approximately |total_bytes_to_free| amount of data from 16368043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // |ranges_|, starting after the last appended buffer before the current 16468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // playback position. 16568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) int FreeBuffersAfterLastAppended(int total_bytes_to_free); 16668043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) 16768043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // Gets the removal range to secure |byte_to_free| from 16868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // [|start_timestamp|, |end_timestamp|). 16968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // Returns the size of buffers to secure if future 17068043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // Remove(|start_timestamp|, |removal_end_timestamp|, duration) is called. 17168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // Will not update |removal_end_timestamp| if the returned size is 0. 1726e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) int GetRemovalRange(DecodeTimestamp start_timestamp, 1736e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp end_timestamp, int byte_to_free, 1746e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp* removal_end_timestamp); 17568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) 1761e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // Prepares |range_for_next_append_| so |new_buffers| can be appended. 1771e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // This involves removing buffers between the end of the previous append 1781e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // and any buffers covered by the time range in |new_buffers|. 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |deleted_buffers| is an output parameter containing candidates for 1801e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // |track_buffer_| if this method ends up removing the current playback 1811e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // position from the range. 1821e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) void PrepareRangesForNextAppend(const BufferQueue& new_buffers, 1831e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) BufferQueue* deleted_buffers); 1842a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Removes buffers, from the |track_buffer_|, that come after |timestamp|. 1866e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) void PruneTrackBuffer(const DecodeTimestamp timestamp); 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Checks to see if |range_with_new_buffers_itr| can be merged with the range 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // next to it, and merges them if so. 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void MergeWithAdjacentRangeIfNecessary( 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const RangeList::iterator& range_with_new_buffers_itr); 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if |second_timestamp| is the timestamp of the next buffer in 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // sequence after |first_timestamp|, false otherwise. 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool AreAdjacentInSequence( 1966e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp first_timestamp, DecodeTimestamp second_timestamp) const; 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Helper method that returns the timestamp for the next buffer that 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |selected_range_| will return from GetNextBuffer() call, or kNoTimestamp() 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // if in between seeking (i.e. |selected_range_| is null). 2016e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp GetNextBufferTimestamp(); 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Finds the range that should contain a media segment that begins with 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |start_timestamp| and returns the iterator pointing to it. Returns 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |ranges_.end()| if there's no such existing range. 2066e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) RangeList::iterator FindExistingRangeFor(DecodeTimestamp start_timestamp); 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Inserts |new_range| into |ranges_| preserving sorted order. Returns an 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // iterator in |ranges_| that points to |new_range|. 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RangeList::iterator AddToRanges(SourceBufferRange* new_range); 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns an iterator that points to the place in |ranges_| where 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |selected_range_| lives. 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RangeList::iterator GetSelectedRangeItr(); 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Sets the |selected_range_| to |range| and resets the next buffer position 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // for the previous |selected_range_|. 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void SetSelectedRange(SourceBufferRange* range); 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Seeks |range| to |seek_timestamp| and then calls SetSelectedRange() with 2212a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // |range|. 2222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void SeekAndSetSelectedRange(SourceBufferRange* range, 2236e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp seek_timestamp); 2242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Resets this stream back to an unseeked state. 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void ResetSeekState(); 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if |seek_timestamp| refers to the beginning of the first range 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // in |ranges_|, false otherwise or if |ranges_| is empty. 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool ShouldSeekToStartOfBuffered(base::TimeDelta seek_timestamp) const; 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if the timestamps of |buffers| are monotonically increasing 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // since the previous append to the media segment, false otherwise. 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool IsMonotonicallyIncreasing(const BufferQueue& buffers) const; 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2361e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // Returns true if |next_timestamp| and |next_is_keyframe| are valid for 2371e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // the first buffer after the previous append. 2386e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) bool IsNextTimestampValid(DecodeTimestamp next_timestamp, 2391e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) bool next_is_keyframe) const; 2401e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns true if |selected_range_| is the only range in |ranges_| that 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // HasNextBufferPosition(). 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool OnlySelectedRangeIsSeeked() const; 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Measures the distances between buffer timestamps and tracks the max. 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void UpdateMaxInterbufferDistance(const BufferQueue& buffers); 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Sets the config ID for each buffer to |append_config_index_|. 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void SetConfigIds(const BufferQueue& buffers); 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called to complete a config change. Updates |current_config_index_| to 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // match the index of the next buffer. Calling this method causes 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // GetNextBuffer() to stop returning kConfigChange and start returning 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // kSuccess. 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void CompleteConfigChange(); 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Sets |selected_range_| and seeks to the nearest keyframe after 2582a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // |timestamp| if necessary and possible. This method only attempts to 2592a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // set |selected_range_| if |seleted_range_| is null and |track_buffer_| 2602a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // is empty. 2616e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) void SetSelectedRangeIfNeeded(const DecodeTimestamp timestamp); 2622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Find a keyframe timestamp that is >= |start_timestamp| and can be used to 2642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // find a new selected range. 2652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Returns kNoTimestamp() if an appropriate keyframe timestamp could not be 2662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // found. 2676e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp FindNewSelectedRangeSeekTimestamp( 2686e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) const DecodeTimestamp start_timestamp); 2692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Searches |ranges_| for the first keyframe timestamp that is >= |timestamp|. 2712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // If |ranges_| doesn't contain a GOP that covers |timestamp| or doesn't 2722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // have a keyframe after |timestamp| then kNoTimestamp() is returned. 2736e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp FindKeyframeAfterTimestamp(const DecodeTimestamp timestamp); 2742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Returns "VIDEO" for a video SourceBufferStream, "AUDIO" for an audio 2765d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // stream, and "TEXT" for a text stream. 2772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::string GetStreamTypeName() const; 2782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2797d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // Returns true if we don't have any ranges or the last range is selected 2807d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // or there is a pending seek beyond any existing ranges. 2817d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) bool IsEndSelected() const; 2827d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 2838bcbed890bc3ce4d7a057a8f32cab53fa534672eTorne (Richard Coles) // Deletes the range pointed to by |*itr| and removes it from |ranges_|. 2848bcbed890bc3ce4d7a057a8f32cab53fa534672eTorne (Richard Coles) // If |*itr| points to |selected_range_|, then |selected_range_| is set to 2858bcbed890bc3ce4d7a057a8f32cab53fa534672eTorne (Richard Coles) // NULL. After the range is removed, |*itr| is to the range after the one that 2868bcbed890bc3ce4d7a057a8f32cab53fa534672eTorne (Richard Coles) // was removed or to |ranges_.end()| if the last range was removed. 2878bcbed890bc3ce4d7a057a8f32cab53fa534672eTorne (Richard Coles) void DeleteAndRemoveRange(RangeList::iterator* itr); 2888bcbed890bc3ce4d7a057a8f32cab53fa534672eTorne (Richard Coles) 2891e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // Helper function used by Remove() and PrepareRangesForNextAppend() to 2901e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // remove buffers and ranges between |start| and |end|. 2911e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // |is_exclusive| - If set to true, buffers with timestamps that 2921e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // match |start| are not removed. If set to false, buffers with 2931e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // timestamps that match |start| will be removed. 2941e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // |*deleted_buffers| - Filled with buffers for the current playback position 2951e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // if the removal range included the current playback position. These buffers 2961e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) // can be used as candidates for placing in the |track_buffer_|. 2971e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) void RemoveInternal( 2986e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp start, DecodeTimestamp end, bool is_exclusive, 2991e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) BufferQueue* deleted_buffers); 3001e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 3015d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) Type GetType() const; 3025d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 30346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // See GetNextBuffer() for additional details. This method handles splice 30446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // frame processing. 30546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) Status HandleNextBufferWithSplice( 30646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) scoped_refptr<StreamParserBuffer>* out_buffer); 30746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 30846d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // See GetNextBuffer() for additional details. This method handles preroll 30946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // frame processing. 31046d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) Status HandleNextBufferWithPreroll( 31146d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) scoped_refptr<StreamParserBuffer>* out_buffer); 31246d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 3135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // See GetNextBuffer() for additional details. The internal method hands out 31446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // single buffers from the |track_buffer_| and |selected_range_| without 31546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // additional processing for splice frame or preroll buffers. 3165d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) Status GetNextBufferInternal(scoped_refptr<StreamParserBuffer>* out_buffer); 3171e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 318effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch // Called by PrepareRangesForNextAppend() before pruning overlapped buffers to 319effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch // generate a splice frame with a small portion of the overlapped buffers. If 320effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch // a splice frame is generated, the first buffer in |new_buffers| will have 321effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch // its timestamps, duration, and fade out preroll updated. 322effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch void GenerateSpliceFrame(const BufferQueue& new_buffers); 323effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch 32446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // If |out_buffer| has splice buffers or preroll, sets |pending_buffer_| 32546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // appropriately and returns true. Otherwise returns false. 32646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) bool SetPendingBuffer(scoped_refptr<StreamParserBuffer>* out_buffer); 32746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) 3282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Callback used to report error strings that can help the web developer 3292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // figure out what is wrong with the content. 3302a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) LogCB log_cb_; 3312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // List of disjoint buffered ranges, ordered by start time. 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RangeList ranges_; 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Indicates which decoder config is being used by the decoder. 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // GetNextBuffer() is only allows to return buffers that have a 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // config ID that matches this index. If there is a mismatch then 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // it must signal that a config change is needed. 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int current_config_index_; 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Indicates which decoder config to associate with new buffers 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // being appended. Each new buffer appended has its config ID set 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // to the value of this field. 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int append_config_index_; 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Holds the audio/video configs for this stream. |current_config_index_| 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and |append_config_index_| represent indexes into one of these vectors. 3482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::vector<AudioDecoderConfig> audio_configs_; 3492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) std::vector<VideoDecoderConfig> video_configs_; 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 351f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Holds the text config for this stream. 352f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) TextTrackConfig text_track_config_; 353f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // True if more data needs to be appended before the Seek() can complete, 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // false if no Seek() has been requested or the Seek() is completed. 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool seek_pending_; 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3587d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) // True if the end of the stream has been signalled. 3597d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) bool end_of_stream_; 3607d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Timestamp of the last request to Seek(). 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta seek_buffer_timestamp_; 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Pointer to the seeked-to Range. This is the range from which 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // GetNextBuffer() calls are fulfilled after the |track_buffer_| has been 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // emptied. 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SourceBufferRange* selected_range_; 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Queue of the next buffers to be returned from calls to GetNextBuffer(). If 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // |track_buffer_| is empty, return buffers from |selected_range_|. 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) BufferQueue track_buffer_; 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The start time of the current media segment being appended. 3746e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp media_segment_start_time_; 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Points to the range containing the current media segment being appended. 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) RangeList::iterator range_for_next_append_; 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // True when the next call to Append() begins a new media segment. 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool new_media_segment_; 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The timestamp of the last buffer appended to the media segment, set to 3836e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) // kNoDecodeTimestamp() if the beginning of the segment. 3846e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp last_appended_buffer_timestamp_; 3852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) bool last_appended_buffer_is_keyframe_; 3862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3872a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // The decode timestamp on the last buffer returned by the most recent 3882a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // GetNextBuffer() call. Set to kNoTimestamp() if GetNextBuffer() hasn't been 3892a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // called yet or a seek has happened since the last GetNextBuffer() call. 3906e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) DecodeTimestamp last_output_buffer_timestamp_; 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Stores the largest distance between two adjacent buffers in this stream. 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta max_interbuffer_distance_; 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The maximum amount of data in bytes the stream will keep in memory. 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int memory_limit_; 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Indicates that a kConfigChanged status has been reported by GetNextBuffer() 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and GetCurrentXXXDecoderConfig() must be called to update the current 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // config. GetNextBuffer() must not be called again until 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // GetCurrentXXXDecoderConfig() has been called. 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool config_change_pending_; 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 40446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // Used by HandleNextBufferWithSplice() or HandleNextBufferWithPreroll() when 40546d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // a splice frame buffer or buffer with preroll is returned from 40646d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // GetNextBufferInternal(). 40746d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) scoped_refptr<StreamParserBuffer> pending_buffer_; 408effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch 409effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch // Indicates which of the splice buffers in |splice_buffer_| should be 410effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch // handled out next. 411effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch size_t splice_buffers_index_; 4125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 41346d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) // Indicates that all buffers before |pending_buffer_| have been handed out. 41446d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles) bool pending_buffers_complete_; 4155c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 416effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch // Indicates that splice frame generation is enabled. 417effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch const bool splice_frames_enabled_; 4185d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(SourceBufferStream); 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace media 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_ 425