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Side by Side Diff: media/filters/source_buffer_stream.h

Issue 1235403002: Change ChunkDemuxerStream/SourceBufferStream memory limit to size_t type (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: A few more DCHECKs Created 5 years, 5 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 // SourceBufferStream is a data structure that stores media Buffers in ranges. 5 // SourceBufferStream is a data structure that stores media Buffers in ranges.
6 // Buffers can be appended out of presentation order. Buffers are retrieved by 6 // Buffers can be appended out of presentation order. Buffers are retrieved by
7 // seeking to the desired start point and calling GetNextBuffer(). Buffers are 7 // seeking to the desired start point and calling GetNextBuffer(). Buffers are
8 // returned in sequential presentation order. 8 // returned in sequential presentation order.
9 9
10 #ifndef MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_ 10 #ifndef MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_
11 #define MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_ 11 #define MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_
12 12
13 #include <deque> 13 #include <deque>
14 #include <list> 14 #include <list>
15 #include <string> 15 #include <string>
16 #include <utility> 16 #include <utility>
17 #include <vector> 17 #include <vector>
18 18
19 #include "base/basictypes.h"
19 #include "base/memory/ref_counted.h" 20 #include "base/memory/ref_counted.h"
20 #include "media/base/audio_decoder_config.h" 21 #include "media/base/audio_decoder_config.h"
21 #include "media/base/media_export.h" 22 #include "media/base/media_export.h"
22 #include "media/base/media_log.h" 23 #include "media/base/media_log.h"
23 #include "media/base/ranges.h" 24 #include "media/base/ranges.h"
24 #include "media/base/stream_parser_buffer.h" 25 #include "media/base/stream_parser_buffer.h"
25 #include "media/base/text_track_config.h" 26 #include "media/base/text_track_config.h"
26 #include "media/base/video_decoder_config.h" 27 #include "media/base/video_decoder_config.h"
27 28
28 namespace media { 29 namespace media {
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135 136
136 // Notifies this object that the video config has changed and buffers in 137 // Notifies this object that the video config has changed and buffers in
137 // future Append() calls should be associated with this new config. 138 // future Append() calls should be associated with this new config.
138 bool UpdateVideoConfig(const VideoDecoderConfig& config); 139 bool UpdateVideoConfig(const VideoDecoderConfig& config);
139 140
140 // Returns the largest distance between two adjacent buffers in this stream, 141 // Returns the largest distance between two adjacent buffers in this stream,
141 // or an estimate if no two adjacent buffers have been appended to the stream 142 // or an estimate if no two adjacent buffers have been appended to the stream
142 // yet. 143 // yet.
143 base::TimeDelta GetMaxInterbufferDistance() const; 144 base::TimeDelta GetMaxInterbufferDistance() const;
144 145
145 void set_memory_limit(int memory_limit) { 146 void SetMemoryLimit(size_t memory_limit);
ddorwin 2015/07/20 21:23:57 If all this does is set a member variable, then th
servolk 2015/07/22 19:02:11 Done.
146 memory_limit_ = memory_limit;
147 }
148 147
149 private: 148 private:
150 friend class SourceBufferStreamTest; 149 friend class SourceBufferStreamTest;
151 150
152 // Frees up space if the SourceBufferStream is taking up too much memory. 151 // Frees up space if the SourceBufferStream is taking up too much memory.
153 void GarbageCollectIfNeeded(); 152 void GarbageCollectIfNeeded();
154 153
155 // Attempts to delete approximately |total_bytes_to_free| amount of data 154 // Attempts to delete approximately |total_bytes_to_free| amount of data
156 // |ranges_|, starting at the front of |ranges_| and moving linearly forward 155 // |ranges_|, starting at the front of |ranges_| and moving linearly forward
157 // through the buffers. Deletes starting from the back if |reverse_direction| 156 // through the buffers. Deletes starting from the back if |reverse_direction|
158 // is true. Returns the number of bytes freed. 157 // is true. Returns the number of bytes freed.
159 int FreeBuffers(int total_bytes_to_free, bool reverse_direction); 158 size_t FreeBuffers(size_t total_bytes_to_free, bool reverse_direction);
160 159
161 // Attempts to delete approximately |total_bytes_to_free| amount of data from 160 // Attempts to delete approximately |total_bytes_to_free| amount of data from
162 // |ranges_|, starting after the last appended buffer before the current 161 // |ranges_|, starting after the last appended buffer before the current
163 // playback position. 162 // playback position.
164 int FreeBuffersAfterLastAppended(int total_bytes_to_free); 163 size_t FreeBuffersAfterLastAppended(size_t total_bytes_to_free);
165 164
166 // Gets the removal range to secure |byte_to_free| from 165 // Gets the removal range to secure |byte_to_free| from
167 // [|start_timestamp|, |end_timestamp|). 166 // [|start_timestamp|, |end_timestamp|).
168 // Returns the size of buffers to secure if future 167 // Returns the size of buffers to secure if future
169 // Remove(|start_timestamp|, |removal_end_timestamp|, duration) is called. 168 // Remove(|start_timestamp|, |removal_end_timestamp|, duration) is called.
170 // Will not update |removal_end_timestamp| if the returned size is 0. 169 // Will not update |removal_end_timestamp| if the returned size is 0.
171 int GetRemovalRange(DecodeTimestamp start_timestamp, 170 size_t GetRemovalRange(DecodeTimestamp start_timestamp,
172 DecodeTimestamp end_timestamp, int byte_to_free, 171 DecodeTimestamp end_timestamp, size_t byte_to_free,
173 DecodeTimestamp* removal_end_timestamp); 172 DecodeTimestamp* removal_end_timestamp);
174 173
175 // Prepares |range_for_next_append_| so |new_buffers| can be appended. 174 // Prepares |range_for_next_append_| so |new_buffers| can be appended.
176 // This involves removing buffers between the end of the previous append 175 // This involves removing buffers between the end of the previous append
177 // and any buffers covered by the time range in |new_buffers|. 176 // and any buffers covered by the time range in |new_buffers|.
178 // |deleted_buffers| is an output parameter containing candidates for 177 // |deleted_buffers| is an output parameter containing candidates for
179 // |track_buffer_| if this method ends up removing the current playback 178 // |track_buffer_| if this method ends up removing the current playback
180 // position from the range. 179 // position from the range.
181 void PrepareRangesForNextAppend(const BufferQueue& new_buffers, 180 void PrepareRangesForNextAppend(const BufferQueue& new_buffers,
182 BufferQueue* deleted_buffers); 181 BufferQueue* deleted_buffers);
183 182
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389 388
390 // The decode timestamp on the last buffer returned by the most recent 389 // The decode timestamp on the last buffer returned by the most recent
391 // GetNextBuffer() call. Set to kNoDecodeTimestamp() if GetNextBuffer() hasn't 390 // GetNextBuffer() call. Set to kNoDecodeTimestamp() if GetNextBuffer() hasn't
392 // been called yet or a seek has happened since the last GetNextBuffer() call. 391 // been called yet or a seek has happened since the last GetNextBuffer() call.
393 DecodeTimestamp last_output_buffer_timestamp_; 392 DecodeTimestamp last_output_buffer_timestamp_;
394 393
395 // Stores the largest distance between two adjacent buffers in this stream. 394 // Stores the largest distance between two adjacent buffers in this stream.
396 base::TimeDelta max_interbuffer_distance_; 395 base::TimeDelta max_interbuffer_distance_;
397 396
398 // The maximum amount of data in bytes the stream will keep in memory. 397 // The maximum amount of data in bytes the stream will keep in memory.
399 int memory_limit_; 398 size_t memory_limit_;
400 399
401 // Indicates that a kConfigChanged status has been reported by GetNextBuffer() 400 // Indicates that a kConfigChanged status has been reported by GetNextBuffer()
402 // and GetCurrentXXXDecoderConfig() must be called to update the current 401 // and GetCurrentXXXDecoderConfig() must be called to update the current
403 // config. GetNextBuffer() must not be called again until 402 // config. GetNextBuffer() must not be called again until
404 // GetCurrentXXXDecoderConfig() has been called. 403 // GetCurrentXXXDecoderConfig() has been called.
405 bool config_change_pending_; 404 bool config_change_pending_;
406 405
407 // Used by HandleNextBufferWithSplice() or HandleNextBufferWithPreroll() when 406 // Used by HandleNextBufferWithSplice() or HandleNextBufferWithPreroll() when
408 // a splice frame buffer or buffer with preroll is returned from 407 // a splice frame buffer or buffer with preroll is returned from
409 // GetNextBufferInternal(). 408 // GetNextBufferInternal().
410 scoped_refptr<StreamParserBuffer> pending_buffer_; 409 scoped_refptr<StreamParserBuffer> pending_buffer_;
411 410
412 // Indicates which of the splice buffers in |splice_buffer_| should be 411 // Indicates which of the splice buffers in |splice_buffer_| should be
413 // handled out next. 412 // handled out next.
414 size_t splice_buffers_index_; 413 size_t splice_buffers_index_;
415 414
416 // Indicates that all buffers before |pending_buffer_| have been handed out. 415 // Indicates that all buffers before |pending_buffer_| have been handed out.
417 bool pending_buffers_complete_; 416 bool pending_buffers_complete_;
418 417
419 // Indicates that splice frame generation is enabled. 418 // Indicates that splice frame generation is enabled.
420 const bool splice_frames_enabled_; 419 const bool splice_frames_enabled_;
421 420
422 DISALLOW_COPY_AND_ASSIGN(SourceBufferStream); 421 DISALLOW_COPY_AND_ASSIGN(SourceBufferStream);
423 }; 422 };
424 423
425 } // namespace media 424 } // namespace media
426 425
427 #endif // MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_ 426 #endif // MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_
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