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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "math.h"
//-----------------------------------------------------------------------------
// Android to OpenSL ES
//----------------------
static inline SLuint32 android_to_sles_streamType(int type) {
return (SLuint32) type;
}
static inline SLuint32 android_to_sles_sampleRate(uint32_t srHz) {
// convert to milliHertz
return (SLuint32) srHz*1000;
}
//-----------------------------------------------------------------------------
// OpenSL ES to Android
//----------------------
static inline int sles_to_android_streamType(SLuint32 type) {
return (int)type;
}
static inline uint32_t sles_to_android_sampleRate(SLuint32 sampleRateMilliHertz) {
return (uint32_t)(sampleRateMilliHertz / 1000);
}
static inline int sles_to_android_sampleFormat(SLuint32 pcmFormat) {
switch (pcmFormat) {
case SL_PCMSAMPLEFORMAT_FIXED_16:
return android::AudioSystem::PCM_16_BIT;
break;
case SL_PCMSAMPLEFORMAT_FIXED_8:
return android::AudioSystem::PCM_8_BIT;
break;
case SL_PCMSAMPLEFORMAT_FIXED_20:
case SL_PCMSAMPLEFORMAT_FIXED_24:
case SL_PCMSAMPLEFORMAT_FIXED_28:
case SL_PCMSAMPLEFORMAT_FIXED_32:
default:
return android::AudioSystem::INVALID_FORMAT;
}
}
static inline int sles_to_android_channelMask(SLuint32 nbChannels, SLuint32 channelMask) {
// FIXME handle channel mask mapping between SL ES and Android
return (nbChannels == 1 ?
android::AudioSystem::CHANNEL_OUT_MONO :
android::AudioSystem::CHANNEL_OUT_STEREO);
}
static inline float sles_to_android_amplification(SLmillibel level) {
// FIXME use the FX Framework conversions
return pow(10, (float)level/2000);
}
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