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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_ |
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367 | 367 |
368 // Pointer to the seeked-to Range. This is the range from which | 368 // Pointer to the seeked-to Range. This is the range from which |
369 // GetNextBuffer() calls are fulfilled after the |track_buffer_| has been | 369 // GetNextBuffer() calls are fulfilled after the |track_buffer_| has been |
370 // emptied. | 370 // emptied. |
371 SourceBufferRange* selected_range_; | 371 SourceBufferRange* selected_range_; |
372 | 372 |
373 // Queue of the next buffers to be returned from calls to GetNextBuffer(). If | 373 // Queue of the next buffers to be returned from calls to GetNextBuffer(). If |
374 // |track_buffer_| is empty, return buffers from |selected_range_|. | 374 // |track_buffer_| is empty, return buffers from |selected_range_|. |
375 BufferQueue track_buffer_; | 375 BufferQueue track_buffer_; |
376 | 376 |
| 377 // If there has been no intervening Seek, this will be true if the last |
| 378 // emitted buffer emptied |track_buffer_|. |
| 379 bool just_exhausted_track_buffer_; |
| 380 |
377 // The start time of the current media segment being appended. | 381 // The start time of the current media segment being appended. |
378 DecodeTimestamp media_segment_start_time_; | 382 DecodeTimestamp media_segment_start_time_; |
379 | 383 |
380 // Points to the range containing the current media segment being appended. | 384 // Points to the range containing the current media segment being appended. |
381 RangeList::iterator range_for_next_append_; | 385 RangeList::iterator range_for_next_append_; |
382 | 386 |
383 // True when the next call to Append() begins a new media segment. | 387 // True when the next call to Append() begins a new media segment. |
384 bool new_media_segment_; | 388 bool new_media_segment_; |
385 | 389 |
386 // The timestamp of the last buffer appended to the media segment, set to | 390 // The timestamp of the last buffer appended to the media segment, set to |
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413 // Indicates which of the splice buffers in |splice_buffer_| should be | 417 // Indicates which of the splice buffers in |splice_buffer_| should be |
414 // handled out next. | 418 // handled out next. |
415 size_t splice_buffers_index_; | 419 size_t splice_buffers_index_; |
416 | 420 |
417 // Indicates that all buffers before |pending_buffer_| have been handed out. | 421 // Indicates that all buffers before |pending_buffer_| have been handed out. |
418 bool pending_buffers_complete_; | 422 bool pending_buffers_complete_; |
419 | 423 |
420 // Indicates that splice frame generation is enabled. | 424 // Indicates that splice frame generation is enabled. |
421 const bool splice_frames_enabled_; | 425 const bool splice_frames_enabled_; |
422 | 426 |
423 // To prevent log spam, count the number of splice generation warnings and | 427 // To prevent log spam, count the number of warnings and successes logged. |
424 // successes logged. | |
425 int num_splice_generation_warning_logs_; | 428 int num_splice_generation_warning_logs_; |
426 int num_splice_generation_success_logs_; | 429 int num_splice_generation_success_logs_; |
| 430 int num_track_buffer_gap_warning_logs_; |
427 | 431 |
428 DISALLOW_COPY_AND_ASSIGN(SourceBufferStream); | 432 DISALLOW_COPY_AND_ASSIGN(SourceBufferStream); |
429 }; | 433 }; |
430 | 434 |
431 } // namespace media | 435 } // namespace media |
432 | 436 |
433 #endif // MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_ | 437 #endif // MEDIA_FILTERS_SOURCE_BUFFER_STREAM_H_ |
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