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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 #include "media/filters/frame_processor.h" | 5 #include "media/filters/frame_processor.h" |
6 | 6 |
7 #include <cstdlib> | 7 #include <cstdlib> |
8 | 8 |
9 #include "base/stl_util.h" | 9 #include "base/stl_util.h" |
10 #include "media/base/buffers.h" | 10 #include "media/base/buffers.h" |
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374 // We use base::TimeDelta instead of double. | 374 // We use base::TimeDelta instead of double. |
375 base::TimeDelta presentation_timestamp = frame->timestamp(); | 375 base::TimeDelta presentation_timestamp = frame->timestamp(); |
376 base::TimeDelta decode_timestamp = frame->GetDecodeTimestamp(); | 376 base::TimeDelta decode_timestamp = frame->GetDecodeTimestamp(); |
377 base::TimeDelta frame_duration = frame->duration(); | 377 base::TimeDelta frame_duration = frame->duration(); |
378 | 378 |
379 DVLOG(3) << __FUNCTION__ << ": Processing frame " | 379 DVLOG(3) << __FUNCTION__ << ": Processing frame " |
380 << "Type=" << frame->type() | 380 << "Type=" << frame->type() |
381 << ", TrackID=" << frame->track_id() | 381 << ", TrackID=" << frame->track_id() |
382 << ", PTS=" << presentation_timestamp.InSecondsF() | 382 << ", PTS=" << presentation_timestamp.InSecondsF() |
383 << ", DTS=" << decode_timestamp.InSecondsF() | 383 << ", DTS=" << decode_timestamp.InSecondsF() |
384 << ", DUR=" << frame_duration.InSecondsF(); | 384 << ", DUR=" << frame_duration.InSecondsF() |
| 385 << ", RAP=" << frame->IsKeyframe(); |
385 | 386 |
386 // Sanity check the timestamps. | 387 // Sanity check the timestamps. |
387 if (presentation_timestamp == kNoTimestamp()) { | 388 if (presentation_timestamp == kNoTimestamp()) { |
388 DVLOG(2) << __FUNCTION__ << ": Unknown frame PTS"; | 389 DVLOG(2) << __FUNCTION__ << ": Unknown frame PTS"; |
389 return false; | 390 return false; |
390 } | 391 } |
391 if (decode_timestamp == kNoTimestamp()) { | 392 if (decode_timestamp == kNoTimestamp()) { |
392 DVLOG(2) << __FUNCTION__ << ": Unknown frame DTS"; | 393 DVLOG(2) << __FUNCTION__ << ": Unknown frame DTS"; |
393 return false; | 394 return false; |
394 } | 395 } |
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546 presentation_timestamp = frame->timestamp(); | 547 presentation_timestamp = frame->timestamp(); |
547 | 548 |
548 // The end timestamp of the frame should be unchanged. | 549 // The end timestamp of the frame should be unchanged. |
549 DCHECK(frame_end_timestamp == presentation_timestamp + frame->duration()); | 550 DCHECK(frame_end_timestamp == presentation_timestamp + frame->duration()); |
550 } | 551 } |
551 | 552 |
552 if (presentation_timestamp < append_window_start || | 553 if (presentation_timestamp < append_window_start || |
553 frame_end_timestamp > append_window_end) { | 554 frame_end_timestamp > append_window_end) { |
554 track_buffer->set_needs_random_access_point(true); | 555 track_buffer->set_needs_random_access_point(true); |
555 DVLOG(3) << "Dropping frame that is outside append window."; | 556 DVLOG(3) << "Dropping frame that is outside append window."; |
556 | |
557 if (!sequence_mode_) { | |
558 // This also triggers a discontinuity so we need to treat the next | |
559 // frames appended within the append window as if they were the | |
560 // beginning of a new segment. | |
561 *new_media_segment = true; | |
562 } | |
563 | |
564 return true; | 557 return true; |
565 } | 558 } |
566 | 559 |
567 // Note: This step is relocated, versus April 1 spec, to allow append window | 560 // Note: This step is relocated, versus April 1 spec, to allow append window |
568 // processing to first filter coded frames shifted by |timestamp_offset_| in | 561 // processing to first filter coded frames shifted by |timestamp_offset_| in |
569 // such a way that their PTS is negative. | 562 // such a way that their PTS is negative. |
570 // 8. If the presentation timestamp or decode timestamp is less than the | 563 // 8. If the presentation timestamp or decode timestamp is less than the |
571 // presentation start time, then run the end of stream algorithm with the | 564 // presentation start time, then run the end of stream algorithm with the |
572 // error parameter set to "decode", and abort these steps. | 565 // error parameter set to "decode", and abort these steps. |
573 DCHECK(presentation_timestamp >= base::TimeDelta()); | 566 DCHECK(presentation_timestamp >= base::TimeDelta()); |
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641 DCHECK(group_end_timestamp_ >= base::TimeDelta()); | 634 DCHECK(group_end_timestamp_ >= base::TimeDelta()); |
642 | 635 |
643 return true; | 636 return true; |
644 } | 637 } |
645 | 638 |
646 NOTREACHED(); | 639 NOTREACHED(); |
647 return false; | 640 return false; |
648 } | 641 } |
649 | 642 |
650 } // namespace media | 643 } // namespace media |
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