1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "math.h" 18 19 #include <system/audio.h> 20 21 //----------------------------------------------------------------------------- 22 // OpenSL ES to Android 23 //---------------------- 24 sles_to_android_sampleRate(SLuint32 sampleRateMilliHertz)25static inline uint32_t sles_to_android_sampleRate(SLuint32 sampleRateMilliHertz) { 26 return (uint32_t)(sampleRateMilliHertz / 1000); 27 } 28 sles_to_android_sampleFormat(const SLDataFormat_PCM * df_pcm)29static inline audio_format_t sles_to_android_sampleFormat(const SLDataFormat_PCM *df_pcm) { 30 if (df_pcm->containerSize != df_pcm->bitsPerSample) { 31 return AUDIO_FORMAT_INVALID; 32 } 33 switch (df_pcm->formatType) { 34 case SL_DATAFORMAT_PCM: 35 switch (df_pcm->containerSize) { 36 case 8: 37 return AUDIO_FORMAT_PCM_8_BIT; 38 case 16: 39 return AUDIO_FORMAT_PCM_16_BIT; 40 case 24: 41 return AUDIO_FORMAT_PCM_24_BIT_PACKED; 42 case 32: 43 return AUDIO_FORMAT_PCM_32_BIT; 44 default: 45 return AUDIO_FORMAT_INVALID; 46 } 47 case SL_ANDROID_DATAFORMAT_PCM_EX: 48 switch (((SLAndroidDataFormat_PCM_EX *)df_pcm)->representation) { 49 case SL_ANDROID_PCM_REPRESENTATION_UNSIGNED_INT: 50 switch (df_pcm->containerSize) { 51 case 8: 52 return AUDIO_FORMAT_PCM_8_BIT; 53 default: 54 return AUDIO_FORMAT_INVALID; 55 } 56 case SL_ANDROID_PCM_REPRESENTATION_SIGNED_INT: 57 switch (df_pcm->containerSize) { 58 case 16: 59 return AUDIO_FORMAT_PCM_16_BIT; 60 case 24: 61 return AUDIO_FORMAT_PCM_24_BIT_PACKED; 62 case 32: 63 return AUDIO_FORMAT_PCM_32_BIT; 64 default: 65 return AUDIO_FORMAT_INVALID; 66 } 67 case SL_ANDROID_PCM_REPRESENTATION_FLOAT: 68 switch (df_pcm->containerSize) { 69 case 32: 70 return AUDIO_FORMAT_PCM_FLOAT; 71 default: 72 return AUDIO_FORMAT_INVALID; 73 } 74 default: 75 return AUDIO_FORMAT_INVALID; 76 } 77 default: 78 return AUDIO_FORMAT_INVALID; 79 } 80 } 81 82 sles_to_android_amplification(SLmillibel level)83static inline float sles_to_android_amplification(SLmillibel level) { 84 // FIXME use the FX Framework conversions 85 return pow(10, (float)level/2000); 86 } 87