mirror of https://github.com/axmolengine/axmol.git
103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
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/****************************************************************************
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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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#define LOG_TAG "PcmBufferProvider"
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#include "audio/android/cutils/log.h"
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#include "audio/android/PcmBufferProvider.h"
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//#define VERY_VERY_VERBOSE_LOGGING
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#ifdef VERY_VERY_VERBOSE_LOGGING
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#define ALOGVV ALOGV
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#else
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#define ALOGVV(a...) do { } while (0)
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#endif
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namespace cocos2d {
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PcmBufferProvider::PcmBufferProvider()
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: _addr(nullptr)
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, _numFrames(0)
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, _frameSize(0)
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, _nextFrame(0)
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, _unrel(0)
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{
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}
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bool PcmBufferProvider::init(const void *addr, size_t frames, size_t frameSize)
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{
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_addr = addr;
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_numFrames = frames;
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_frameSize = frameSize;
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_nextFrame = 0;
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_unrel = 0;
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return true;
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}
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status_t PcmBufferProvider::getNextBuffer(Buffer *buffer,
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int64_t pts/* = kInvalidPTS*/) {
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(void) pts; // suppress warning
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size_t requestedFrames = buffer->frameCount;
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if (requestedFrames > _numFrames - _nextFrame) {
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buffer->frameCount = _numFrames - _nextFrame;
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}
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ALOGVV("getNextBuffer() requested %zu frames out of %zu frames available,"
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" and returned %zu frames",
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requestedFrames, (size_t) (_numFrames - _nextFrame), buffer->frameCount);
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_unrel = buffer->frameCount;
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if (buffer->frameCount > 0) {
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buffer->raw = (char *) _addr + _frameSize * _nextFrame;
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return NO_ERROR;
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} else {
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buffer->raw = NULL;
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return NOT_ENOUGH_DATA;
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}
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}
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void PcmBufferProvider::releaseBuffer(Buffer *buffer) {
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if (buffer->frameCount > _unrel) {
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ALOGVV("ERROR releaseBuffer() released %zu frames but only %zu available "
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"to release", buffer->frameCount, _unrel);
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_nextFrame += _unrel;
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_unrel = 0;
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} else {
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ALOGVV("releaseBuffer() released %zu frames out of %zu frames available "
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"to release", buffer->frameCount, _unrel);
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_nextFrame += buffer->frameCount;
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_unrel -= buffer->frameCount;
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}
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buffer->frameCount = 0;
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buffer->raw = NULL;
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}
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void PcmBufferProvider::reset() {
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_nextFrame = 0;
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}
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} // namespace cocos2d {
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