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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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52 size_t& nonSilentFramesToProcess) { | 52 size_t& nonSilentFramesToProcess) { |
53 DCHECK(outputBus); | 53 DCHECK(outputBus); |
54 if (!outputBus) | 54 if (!outputBus) |
55 return; | 55 return; |
56 | 56 |
57 DCHECK_EQ(quantumFrameSize, | 57 DCHECK_EQ(quantumFrameSize, |
58 static_cast<size_t>(AudioUtilities::kRenderQuantumFrames)); | 58 static_cast<size_t>(AudioUtilities::kRenderQuantumFrames)); |
59 if (quantumFrameSize != AudioUtilities::kRenderQuantumFrames) | 59 if (quantumFrameSize != AudioUtilities::kRenderQuantumFrames) |
60 return; | 60 return; |
61 | 61 |
62 double sampleRate = this->sampleRate(); | 62 double sampleRate = context()->sampleRate(); |
63 | 63 |
64 // quantumStartFrame : Start frame of the current time quantum. | 64 // quantumStartFrame : Start frame of the current time quantum. |
65 // quantumEndFrame : End frame of the current time quantum. | 65 // quantumEndFrame : End frame of the current time quantum. |
66 // startFrame : Start frame for this source. | 66 // startFrame : Start frame for this source. |
67 // endFrame : End frame for this source. | 67 // endFrame : End frame for this source. |
68 size_t quantumStartFrame = context()->currentSampleFrame(); | 68 size_t quantumStartFrame = context()->currentSampleFrame(); |
69 size_t quantumEndFrame = quantumStartFrame + quantumFrameSize; | 69 size_t quantumEndFrame = quantumStartFrame + quantumFrameSize; |
70 size_t startFrame = | 70 size_t startFrame = |
71 AudioUtilities::timeToSampleFrame(m_startTime, sampleRate); | 71 AudioUtilities::timeToSampleFrame(m_startTime, sampleRate); |
72 size_t endFrame = | 72 size_t endFrame = |
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274 // playback state if the context is closed. | 274 // playback state if the context is closed. |
275 if (context()->isContextClosed()) | 275 if (context()->isContextClosed()) |
276 return false; | 276 return false; |
277 | 277 |
278 // If a node is scheduled or playing, do not collect the node prematurely | 278 // If a node is scheduled or playing, do not collect the node prematurely |
279 // even its reference is out of scope. Then fire onended event if assigned. | 279 // even its reference is out of scope. Then fire onended event if assigned. |
280 return audioScheduledSourceHandler().isPlayingOrScheduled(); | 280 return audioScheduledSourceHandler().isPlayingOrScheduled(); |
281 } | 281 } |
282 | 282 |
283 } // namespace blink | 283 } // namespace blink |
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