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1 /* | 1 /* |
2 * Copyright (C) 2012, Google Inc. All rights reserved. | 2 * Copyright (C) 2012, Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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54 double& startFrameOffset) { | 54 double& startFrameOffset) { |
55 DCHECK(outputBus); | 55 DCHECK(outputBus); |
56 if (!outputBus) | 56 if (!outputBus) |
57 return; | 57 return; |
58 | 58 |
59 DCHECK_EQ(quantumFrameSize, | 59 DCHECK_EQ(quantumFrameSize, |
60 static_cast<size_t>(AudioUtilities::kRenderQuantumFrames)); | 60 static_cast<size_t>(AudioUtilities::kRenderQuantumFrames)); |
61 if (quantumFrameSize != AudioUtilities::kRenderQuantumFrames) | 61 if (quantumFrameSize != AudioUtilities::kRenderQuantumFrames) |
62 return; | 62 return; |
63 | 63 |
64 double sampleRate = this->sampleRate(); | 64 double sampleRate = context()->sampleRate(); |
65 | 65 |
66 // quantumStartFrame : Start frame of the current time quantum. | 66 // quantumStartFrame : Start frame of the current time quantum. |
67 // quantumEndFrame : End frame of the current time quantum. | 67 // quantumEndFrame : End frame of the current time quantum. |
68 // startFrame : Start frame for this source. | 68 // startFrame : Start frame for this source. |
69 // endFrame : End frame for this source. | 69 // endFrame : End frame for this source. |
70 size_t quantumStartFrame = context()->currentSampleFrame(); | 70 size_t quantumStartFrame = context()->currentSampleFrame(); |
71 size_t quantumEndFrame = quantumStartFrame + quantumFrameSize; | 71 size_t quantumEndFrame = quantumStartFrame + quantumFrameSize; |
72 size_t startFrame = | 72 size_t startFrame = |
73 AudioUtilities::timeToSampleFrame(m_startTime, sampleRate); | 73 AudioUtilities::timeToSampleFrame(m_startTime, sampleRate); |
74 size_t endFrame = | 74 size_t endFrame = |
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280 // playback state if the context is closed. | 280 // playback state if the context is closed. |
281 if (context()->isContextClosed()) | 281 if (context()->isContextClosed()) |
282 return false; | 282 return false; |
283 | 283 |
284 // If a node is scheduled or playing, do not collect the node prematurely | 284 // If a node is scheduled or playing, do not collect the node prematurely |
285 // even its reference is out of scope. Then fire onended event if assigned. | 285 // even its reference is out of scope. Then fire onended event if assigned. |
286 return audioScheduledSourceHandler().isPlayingOrScheduled(); | 286 return audioScheduledSourceHandler().isPlayingOrScheduled(); |
287 } | 287 } |
288 | 288 |
289 } // namespace blink | 289 } // namespace blink |
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