mirror of https://github.com/axmolengine/axmol.git
121 lines
3.7 KiB
C++
121 lines
3.7 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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Copyright (c) 2019-present Axmol Engine contributors (see AUTHORS.md).
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https://axmolengine.github.io/
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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/AudioDecoderOgg.h"
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#include "audio/AudioMacros.h"
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#include "platform/FileUtils.h"
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#if AX_TARGET_PLATFORM == AX_PLATFORM_ANDROID
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# include <unistd.h>
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# include <errno.h>
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#endif
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NS_AX_BEGIN
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static size_t ov_fread_r(void* buffer, size_t element_size, size_t element_count, void* handle)
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{
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auto* fs = static_cast<IFileStream*>(handle);
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return fs->read(buffer, static_cast<uint32_t>(element_size * element_count));
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}
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static int ov_fseek_r(void* handle, ogg_int64_t offset, int whence)
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{
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auto* fs = static_cast<IFileStream*>(handle);
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return fs->seek(offset, whence) < 0 ? -1 : 0;
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}
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static long ov_ftell_r(void* handle)
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{
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auto* fs = static_cast<IFileStream*>(handle);
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return fs->tell();
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}
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static int ov_fclose_r(void* handle)
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{
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auto* fs = static_cast<IFileStream*>(handle);
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delete fs;
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return 0;
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}
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AudioDecoderOgg::AudioDecoderOgg() {}
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AudioDecoderOgg::~AudioDecoderOgg()
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{
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close();
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}
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bool AudioDecoderOgg::open(std::string_view fullPath)
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{
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auto fs = FileUtils::getInstance()->openFileStream(fullPath, IFileStream::Mode::READ).release();
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if (!fs)
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{
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ALOGE("Trouble with ogg(1): %s\n", strerror(errno));
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return false;
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}
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static ov_callbacks OV_CALLBACKS_POSIX = {ov_fread_r, ov_fseek_r, ov_fclose_r, ov_ftell_r};
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if (0 == ov_open_callbacks(fs, &_vf, nullptr, 0, OV_CALLBACKS_POSIX))
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{
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// header
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vorbis_info* vi = ov_info(&_vf, -1);
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_sampleRate = static_cast<uint32_t>(vi->rate);
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_channelCount = vi->channels;
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_bytesPerBlock = vi->channels * sizeof(short);
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_totalFrames = static_cast<uint32_t>(ov_pcm_total(&_vf, -1));
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_isOpened = true;
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return true;
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}
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return false;
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}
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void AudioDecoderOgg::close()
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{
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if (isOpened())
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{
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ov_clear(&_vf);
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_isOpened = false;
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}
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}
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uint32_t AudioDecoderOgg::read(uint32_t framesToRead, char* pcmBuf)
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{
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int currentSection = 0;
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int bytesToRead = framesToBytes(framesToRead);
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int32_t bytesRead = static_cast<int32_t>(ov_read(&_vf, pcmBuf, bytesToRead, 0, 2, 1, ¤tSection));
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return bytesToFrames(bytesRead);
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}
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bool AudioDecoderOgg::seek(uint32_t frameOffset)
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{
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return 0 == ov_pcm_seek(&_vf, frameOffset);
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}
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NS_AX_END // namespace ax
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#undef LOG_TAG
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