android_sles_conversions.h revision c323fec2a2639c0cf7463016d592d0eb0539657c
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (C) 2010 The Android Open Source Project 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Licensed under the Apache License, Version 2.0 (the "License"); 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * you may not use this file except in compliance with the License. 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * You may obtain a copy of the License at 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * http://www.apache.org/licenses/LICENSE-2.0 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Unless required by applicable law or agreed to in writing, software 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * distributed under the License is distributed on an "AS IS" BASIS, 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * See the License for the specific language governing permissions and 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * limitations under the License. 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "math.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <system/audio.h> 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//----------------------------------------------------------------------------- 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Android to OpenSL ES 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//---------------------- 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static inline SLuint32 android_to_sles_streamType(int type) { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (SLuint32) type; 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static inline SLuint32 android_to_sles_sampleRate(uint32_t srHz) { 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // convert to milliHertz 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (SLuint32) srHz*1000; 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//----------------------------------------------------------------------------- 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// OpenSL ES to Android 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)//---------------------- 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static inline int sles_to_android_streamType(SLuint32 type) { 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (int)type; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static inline uint32_t sles_to_android_sampleRate(SLuint32 sampleRateMilliHertz) { 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (uint32_t)(sampleRateMilliHertz / 1000); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static inline audio_format_t sles_to_android_sampleFormat(SLuint32 formatType, 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SLuint32 containerSize) { 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (formatType) { 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case SL_DATAFORMAT_PCM: 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (containerSize) { 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case 8: 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AUDIO_FORMAT_PCM_8_BIT; 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case 16: 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AUDIO_FORMAT_PCM_16_BIT; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case 24: 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AUDIO_FORMAT_PCM_24_BIT_PACKED; 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case 32: 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AUDIO_FORMAT_PCM_32_BIT; 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AUDIO_FORMAT_INVALID; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return AUDIO_FORMAT_INVALID; 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static inline audio_channel_mask_t sles_to_android_channelMaskIn(SLuint32 nbChannels, 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SLuint32 channelMask) { 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FIXME handle channel mask mapping between SL ES and Android 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return audio_channel_in_mask_from_count(nbChannels); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static inline audio_channel_mask_t sles_to_android_channelMaskOut(SLuint32 nbChannels, 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) SLuint32 channelMask) { 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FIXME handle channel mask mapping between SL ES and Android 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return audio_channel_out_mask_from_count(nbChannels); 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static inline float sles_to_android_amplification(SLmillibel level) { 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FIXME use the FX Framework conversions 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return pow(10, (float)level/2000); 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)static inline uint32_t channelCountToMask(uint32_t channelCount) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // FIXME channel mask is not yet implemented by Stagefright, so use a reasonable default 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // that is computed from the channel count 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uint32_t channelMask; 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switch (channelCount) { 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case 1: 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // see explanation in data.c re: default channel mask for mono 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return SL_SPEAKER_FRONT_LEFT; 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case 2: 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT; 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Android-specific 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case 4: 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | SL_SPEAKER_BACK_LEFT | SL_SPEAKER_BACK_RIGHT; 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case 6: 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT| SL_SPEAKER_FRONT_CENTER 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | SL_SPEAKER_LOW_FREQUENCY 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | SL_SPEAKER_BACK_LEFT | SL_SPEAKER_BACK_RIGHT; 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) case 8: 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return SL_SPEAKER_FRONT_LEFT | SL_SPEAKER_FRONT_RIGHT | SL_SPEAKER_FRONT_CENTER 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | SL_SPEAKER_LOW_FREQUENCY 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | SL_SPEAKER_BACK_LEFT | SL_SPEAKER_BACK_RIGHT 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | SL_SPEAKER_SIDE_LEFT |SL_SPEAKER_SIDE_RIGHT; 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) default: 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return UNKNOWN_CHANNELMASK; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)