| OLD | NEW |
| 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 * | 7 * |
| 8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
| (...skipping 26 matching lines...) Expand all Loading... |
| 37 : m_provider(audioProvider), | 37 : m_provider(audioProvider), |
| 38 m_fifo(numberOfChannels, fifoLength), | 38 m_fifo(numberOfChannels, fifoLength), |
| 39 m_providerSize(providerSize), | 39 m_providerSize(providerSize), |
| 40 m_tempBus(AudioBus::create(numberOfChannels, providerSize)) {} | 40 m_tempBus(AudioBus::create(numberOfChannels, providerSize)) {} |
| 41 | 41 |
| 42 void AudioPullFIFO::consume(AudioBus* destination, size_t framesToConsume) { | 42 void AudioPullFIFO::consume(AudioBus* destination, size_t framesToConsume) { |
| 43 if (!destination) | 43 if (!destination) |
| 44 return; | 44 return; |
| 45 | 45 |
| 46 if (framesToConsume > m_fifo.framesInFifo()) { | 46 if (framesToConsume > m_fifo.framesInFifo()) { |
| 47 // We don't have enough data in the FIFO to fulfill the request. Ask for mor
e data. | 47 // We don't have enough data in the FIFO to fulfill the request. Ask for |
| 48 // more data. |
| 48 fillBuffer(framesToConsume - m_fifo.framesInFifo()); | 49 fillBuffer(framesToConsume - m_fifo.framesInFifo()); |
| 49 } | 50 } |
| 50 | 51 |
| 51 m_fifo.consume(destination, framesToConsume); | 52 m_fifo.consume(destination, framesToConsume); |
| 52 } | 53 } |
| 53 | 54 |
| 54 void AudioPullFIFO::fillBuffer(size_t numberOfFrames) { | 55 void AudioPullFIFO::fillBuffer(size_t numberOfFrames) { |
| 55 // Keep asking the provider to give us data until we have received at least |n
umberOfFrames| of | 56 // Keep asking the provider to give us data until we have received at least |
| 56 // data. Stuff the data into the FIFO. | 57 // |numberOfFrames| of data. Stuff the data into the FIFO. |
| 57 size_t framesProvided = 0; | 58 size_t framesProvided = 0; |
| 58 | 59 |
| 59 while (framesProvided < numberOfFrames) { | 60 while (framesProvided < numberOfFrames) { |
| 60 m_provider.provideInput(m_tempBus.get(), m_providerSize); | 61 m_provider.provideInput(m_tempBus.get(), m_providerSize); |
| 61 | 62 |
| 62 m_fifo.push(m_tempBus.get()); | 63 m_fifo.push(m_tempBus.get()); |
| 63 | 64 |
| 64 framesProvided += m_providerSize; | 65 framesProvided += m_providerSize; |
| 65 } | 66 } |
| 66 } | 67 } |
| 67 | 68 |
| 68 } // namespace blink | 69 } // namespace blink |
| OLD | NEW |