mirror of https://github.com/axmolengine/axmol.git
112 lines
3.5 KiB
C++
112 lines
3.5 KiB
C++
/****************************************************************************
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Copyright (c) 2017 Chukong Technologies Inc.
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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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#define LOG_TAG "AudioDecoderOgg"
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#include "audio/android/AudioDecoderOgg.h"
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#include "platform/CCFileUtils.h"
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namespace cocos2d { namespace experimental {
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AudioDecoderOgg::AudioDecoderOgg()
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{
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ALOGV("Create AudioDecoderOgg");
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}
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AudioDecoderOgg::~AudioDecoderOgg()
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{
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}
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int AudioDecoderOgg::fseek64Wrap(void* datasource, ogg_int64_t off, int whence)
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{
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return AudioDecoder::fileSeek(datasource, (long)off, whence);
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}
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bool AudioDecoderOgg::decodeToPcm()
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{
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_fileData = FileUtils::getInstance()->getDataFromFile(_url);
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if (_fileData.isNull())
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{
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return false;
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}
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ov_callbacks callbacks;
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callbacks.read_func = AudioDecoder::fileRead;
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callbacks.seek_func = AudioDecoderOgg::fseek64Wrap;
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callbacks.close_func = AudioDecoder::fileClose;
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callbacks.tell_func = AudioDecoder::fileTell;
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_fileCurrPos = 0;
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OggVorbis_File vf;
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int ret = ov_open_callbacks(this, &vf, NULL, 0, callbacks);
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if (ret != 0)
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{
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ALOGE("Open file error, file: %s, ov_open_callbacks return %d", _url.c_str(), ret);
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return false;
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}
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// header
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auto vi = ov_info(&vf, -1);
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uint32_t pcmSamples = (uint32_t) ov_pcm_total(&vf, -1);
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uint32_t bufferSize = pcmSamples * vi->channels * sizeof(short);
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char* pcmBuffer = (char*)malloc(bufferSize);
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memset(pcmBuffer, 0, bufferSize);
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int currentSection = 0;
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long curPos = 0;
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long readBytes = 0;
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do
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{
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readBytes = ov_read(&vf, pcmBuffer + curPos, 4096, ¤tSection);
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curPos += readBytes;
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} while (readBytes > 0);
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if (curPos > 0)
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{
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_result.pcmBuffer->insert(_result.pcmBuffer->end(), pcmBuffer, pcmBuffer + bufferSize);
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_result.numChannels = vi->channels;
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_result.sampleRate = vi->rate;
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_result.bitsPerSample = SL_PCMSAMPLEFORMAT_FIXED_16;
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_result.containerSize = SL_PCMSAMPLEFORMAT_FIXED_16;
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_result.channelMask = vi->channels == 1 ? SL_SPEAKER_FRONT_CENTER : (SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT);
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_result.endianness = SL_BYTEORDER_LITTLEENDIAN;
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_result.numFrames = pcmSamples;
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_result.duration = 1.0f * pcmSamples / vi->rate;
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}
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else
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{
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ALOGE("ov_read returns 0 byte!");
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}
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ov_clear(&vf);
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free(pcmBuffer);
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return (curPos > 0);
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}
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}} // namespace cocos2d { namespace experimental {
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