/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "math.h"
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#include <system/audio.h>
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//-----------------------------------------------------------------------------
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// OpenSL ES to Android
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//----------------------
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static inline uint32_t sles_to_android_sampleRate(SLuint32 sampleRateMilliHertz) {
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return (uint32_t)(sampleRateMilliHertz / 1000);
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}
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static inline audio_format_t sles_to_android_sampleFormat(const SLDataFormat_PCM *df_pcm) {
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if (df_pcm->containerSize != df_pcm->bitsPerSample) {
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return AUDIO_FORMAT_INVALID;
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}
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switch (df_pcm->formatType) {
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case SL_DATAFORMAT_PCM:
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switch (df_pcm->containerSize) {
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case 8:
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return AUDIO_FORMAT_PCM_8_BIT;
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case 16:
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return AUDIO_FORMAT_PCM_16_BIT;
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case 24:
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return AUDIO_FORMAT_PCM_24_BIT_PACKED;
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case 32:
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return AUDIO_FORMAT_PCM_32_BIT;
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default:
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return AUDIO_FORMAT_INVALID;
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}
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case SL_ANDROID_DATAFORMAT_PCM_EX:
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switch (((SLAndroidDataFormat_PCM_EX *)df_pcm)->representation) {
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case SL_ANDROID_PCM_REPRESENTATION_UNSIGNED_INT:
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switch (df_pcm->containerSize) {
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case 8:
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return AUDIO_FORMAT_PCM_8_BIT;
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default:
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return AUDIO_FORMAT_INVALID;
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}
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case SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT:
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switch (df_pcm->containerSize) {
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case 16:
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return AUDIO_FORMAT_PCM_16_BIT;
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case 24:
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return AUDIO_FORMAT_PCM_24_BIT_PACKED;
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case 32:
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return AUDIO_FORMAT_PCM_32_BIT;
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default:
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return AUDIO_FORMAT_INVALID;
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}
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case SL_ANDROID_PCM_REPRESENTATION_FLOAT:
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switch (df_pcm->containerSize) {
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case 32:
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return AUDIO_FORMAT_PCM_FLOAT;
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default:
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return AUDIO_FORMAT_INVALID;
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}
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default:
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return AUDIO_FORMAT_INVALID;
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}
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default:
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return AUDIO_FORMAT_INVALID;
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}
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}
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static inline float sles_to_android_amplification(SLmillibel level) {
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// FIXME use the FX Framework conversions
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return pow(10, (float)level/2000);
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}
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