mirror of https://github.com/axmolengine/axmol.git
109 lines
3.1 KiB
C++
109 lines
3.1 KiB
C++
/****************************************************************************
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Copyright (c) 2016 Chukong Technologies Inc.
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "audio/include/AudioDecoder.h"
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#include "audio/include/AudioMacros.h"
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#include "platform/CCFileUtils.h"
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#define LOG_TAG "AudioDecoder"
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namespace cocos2d {
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AudioDecoder::AudioDecoder()
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: _isOpened(false)
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, _totalFrames(0)
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, _bytesPerBlock(0)
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, _samplesPerBlock(1)
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, _sampleRate(0)
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, _channelCount(0)
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, _sourceFormat(AUDIO_SOURCE_FORMAT::PCM_16)
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{
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}
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AudioDecoder::~AudioDecoder()
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{
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}
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bool AudioDecoder::isOpened() const
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{
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return _isOpened;
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}
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uint32_t AudioDecoder::readFixedFrames(uint32_t framesToRead, char* pcmBuf)
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{
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uint32_t framesRead = 0;
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uint32_t framesReadOnce = 0;
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do
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{
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framesReadOnce = read(framesToRead - framesRead, pcmBuf + framesToBytes((framesRead)));
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framesRead += framesReadOnce;
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} while (framesReadOnce != 0 && framesRead < framesToRead);
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if (framesRead < framesToRead)
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{
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memset(pcmBuf + framesToBytes(framesRead), 0x0, framesToBytes(framesToRead - framesRead));
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}
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return framesRead;
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}
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uint32_t AudioDecoder::getTotalFrames() const
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{
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return _totalFrames;
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}
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uint32_t AudioDecoder::framesToBytes(uint32_t frames) const
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{
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return _bytesPerBlock * frames;
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}
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uint32_t AudioDecoder::bytesToFrames(uint32_t bytes) const
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{
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return bytes / _bytesPerBlock;
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}
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uint32_t AudioDecoder::getSampleRate() const
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{
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return _sampleRate;
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}
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uint32_t AudioDecoder::getChannelCount() const
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{
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return _channelCount;
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}
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uint32_t AudioDecoder::getSamplesPerBlock() const
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{
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return _samplesPerBlock;
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}
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AUDIO_SOURCE_FORMAT AudioDecoder::getSourceFormat() const
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{
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return _sourceFormat;
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}
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}
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