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Diffstat (limited to 'demos/mobile/quickhit/ga_src/GEInterfaces.cpp')
| -rw-r--r-- | demos/mobile/quickhit/ga_src/GEInterfaces.cpp | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/demos/mobile/quickhit/ga_src/GEInterfaces.cpp b/demos/mobile/quickhit/ga_src/GEInterfaces.cpp new file mode 100644 index 0000000..a71f738 --- /dev/null +++ b/demos/mobile/quickhit/ga_src/GEInterfaces.cpp @@ -0,0 +1,177 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <memory.h> +#include "GEInterfaces.h" + + +using namespace GE; + +/** + * CAudioSource + * common functionality + * + */ +IAudioSource::IAudioSource() { + m_next = 0; +}; + +IAudioSource::~IAudioSource() { + + +}; + +/** + * CAudioMixer + * + */ +CAudioMixer::CAudioMixer() { + m_sourceList = 0; + m_mixingBuffer = 0; + m_mixingBufferLength = 0; + m_fixedGeneralVolume = 4096; +}; + + +CAudioMixer::~CAudioMixer() { + destroyList(); + if (m_mixingBuffer) { + delete [] m_mixingBuffer; + m_mixingBuffer = 0; + }; +}; + +void CAudioMixer::destroyList() { + m_mutex.lock(); + IAudioSource *l = m_sourceList; + while (l) { + IAudioSource *n = l->m_next; + delete l; + l = n; + }; + m_sourceList = 0; + m_mutex.unlock(); +}; + + +IAudioSource* CAudioMixer::addAudioSource( IAudioSource *source ) { + m_mutex.lock(); + source->m_next = 0; + if (m_sourceList) { + IAudioSource *l = m_sourceList; + while (l->m_next) l = l->m_next; + l->m_next = source; + } else m_sourceList = source; + m_mutex.unlock(); + return source; + +}; + + +bool CAudioMixer::removeAudioSource( IAudioSource *source ) { + return true; +}; + +void CAudioMixer::setGeneralVolume( float vol ) { + m_fixedGeneralVolume = (4096.0f*vol); +}; + +int CAudioMixer::pullAudio( AUDIO_SAMPLE_TYPE *target, int bufferLength ) { + + if (!m_sourceList) return 0; + + m_mutex.lock(); + + + if (m_mixingBufferLength<bufferLength) { + if (m_mixingBuffer) delete [] m_mixingBuffer; + m_mixingBufferLength = bufferLength; + m_mixingBuffer = new AUDIO_SAMPLE_TYPE[ m_mixingBufferLength ]; + }; + + memset( target, 0, sizeof( AUDIO_SAMPLE_TYPE ) * bufferLength ); + + AUDIO_SAMPLE_TYPE *t; + AUDIO_SAMPLE_TYPE *t_target; + AUDIO_SAMPLE_TYPE *s; + + IAudioSource *prev = 0; + IAudioSource *l = m_sourceList; + while (l) { + IAudioSource *next = l->m_next; + + // process l + int mixed = l->pullAudio( m_mixingBuffer, bufferLength ); + if (mixed>0) { + // mix to main.. + t = target; + t_target = t+mixed; + s = m_mixingBuffer; + while (t!=t_target) { + *t +=(((*s)*m_fixedGeneralVolume)>>12); + t++; + s++; + }; + }; + + + + // autodestroy + if (l->canBeDestroyed() == true) { // NOTE, IS UNDER TESTING,... MIGHT CAUSE UNPREDICTABLE CRASHING WITH SOME USE CASES!!! + if (!prev) + m_sourceList = next; + else prev->m_next = next; + delete l; + l = 0; + }; + + + + + prev = l; + l = next; + }; + m_mutex.unlock(); + return bufferLength; +}; + + + + |