1 /* 2 * Copyright (C) 2014 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 #ifndef ANDROID_MEDIA_AUDIOFORMAT_H 18 #define ANDROID_MEDIA_AUDIOFORMAT_H 19 20 #include <system/audio.h> 21 22 // keep these values in sync with AudioFormat.java 23 #define ENCODING_PCM_16BIT 2 24 #define ENCODING_PCM_8BIT 3 25 #define ENCODING_PCM_FLOAT 4 26 #define ENCODING_AC3 5 27 #define ENCODING_E_AC3 6 28 #define ENCODING_DTS 7 29 #define ENCODING_DTS_HD 8 30 #define ENCODING_MP3 9 31 #define ENCODING_AAC_LC 10 32 #define ENCODING_AAC_HE_V1 11 33 #define ENCODING_AAC_HE_V2 12 34 #define ENCODING_IEC61937 13 35 #define ENCODING_DOLBY_TRUEHD 14 36 #define ENCODING_AAC_ELD 15 37 #define ENCODING_AAC_XHE 16 38 #define ENCODING_AC4 17 39 #define ENCODING_E_AC3_JOC 18 40 41 #define ENCODING_INVALID 0 42 #define ENCODING_DEFAULT 1 43 44 45 46 #define CHANNEL_INVALID 0 47 #define CHANNEL_OUT_DEFAULT 1 48 49 static inline audio_format_t audioFormatToNative(int audioFormat) 50 { 51 switch (audioFormat) { 52 case ENCODING_PCM_16BIT: 53 return AUDIO_FORMAT_PCM_16_BIT; 54 case ENCODING_PCM_8BIT: 55 return AUDIO_FORMAT_PCM_8_BIT; 56 case ENCODING_PCM_FLOAT: 57 return AUDIO_FORMAT_PCM_FLOAT; 58 case ENCODING_AC3: 59 return AUDIO_FORMAT_AC3; 60 case ENCODING_E_AC3: 61 return AUDIO_FORMAT_E_AC3; 62 case ENCODING_DTS: 63 return AUDIO_FORMAT_DTS; 64 case ENCODING_DTS_HD: 65 return AUDIO_FORMAT_DTS_HD; 66 case ENCODING_MP3: 67 return AUDIO_FORMAT_MP3; 68 case ENCODING_AAC_LC: 69 return AUDIO_FORMAT_AAC_LC; 70 case ENCODING_AAC_HE_V1: 71 return AUDIO_FORMAT_AAC_HE_V1; 72 case ENCODING_AAC_HE_V2: 73 return AUDIO_FORMAT_AAC_HE_V2; 74 case ENCODING_DOLBY_TRUEHD: 75 return AUDIO_FORMAT_DOLBY_TRUEHD; 76 case ENCODING_IEC61937: 77 return AUDIO_FORMAT_IEC61937; 78 case ENCODING_AAC_ELD: 79 return AUDIO_FORMAT_AAC_ELD; 80 case ENCODING_AAC_XHE: 81 return AUDIO_FORMAT_AAC_XHE; 82 case ENCODING_AC4: 83 return AUDIO_FORMAT_AC4; 84 case ENCODING_E_AC3_JOC: 85 return AUDIO_FORMAT_E_AC3_JOC; 86 case ENCODING_DEFAULT: 87 return AUDIO_FORMAT_DEFAULT; 88 default: 89 return AUDIO_FORMAT_INVALID; 90 } 91 } 92 93 static inline int audioFormatFromNative(audio_format_t nativeFormat) 94 { 95 switch (nativeFormat) { 96 case AUDIO_FORMAT_PCM_16_BIT: 97 return ENCODING_PCM_16BIT; 98 case AUDIO_FORMAT_PCM_8_BIT: 99 return ENCODING_PCM_8BIT; 100 case AUDIO_FORMAT_PCM_FLOAT: 101 return ENCODING_PCM_FLOAT; 102 103 // map these to ENCODING_PCM_FLOAT 104 case AUDIO_FORMAT_PCM_8_24_BIT: 105 case AUDIO_FORMAT_PCM_24_BIT_PACKED: 106 case AUDIO_FORMAT_PCM_32_BIT: 107 return ENCODING_PCM_FLOAT; 108 109 case AUDIO_FORMAT_AC3: 110 return ENCODING_AC3; 111 case AUDIO_FORMAT_E_AC3: 112 return ENCODING_E_AC3; 113 case AUDIO_FORMAT_DTS: 114 return ENCODING_DTS; 115 case AUDIO_FORMAT_DTS_HD: 116 return ENCODING_DTS_HD; 117 case AUDIO_FORMAT_MP3: 118 return ENCODING_MP3; 119 case AUDIO_FORMAT_AAC_LC: 120 return ENCODING_AAC_LC; 121 case AUDIO_FORMAT_AAC_HE_V1: 122 return ENCODING_AAC_HE_V1; 123 case AUDIO_FORMAT_AAC_HE_V2: 124 return ENCODING_AAC_HE_V2; 125 case AUDIO_FORMAT_IEC61937: 126 return ENCODING_IEC61937; 127 case AUDIO_FORMAT_DOLBY_TRUEHD: 128 return ENCODING_DOLBY_TRUEHD; 129 case AUDIO_FORMAT_AAC_ELD: 130 return ENCODING_AAC_ELD; 131 // FIXME needs addition of AUDIO_FORMAT_AAC_XHE 132 //case AUDIO_FORMAT_AAC_XHE: 133 // return ENCODING_AAC_XHE; 134 case AUDIO_FORMAT_AC4: 135 return ENCODING_AC4; 136 case AUDIO_FORMAT_E_AC3_JOC: 137 return ENCODING_E_AC3_JOC; 138 case AUDIO_FORMAT_DEFAULT: 139 return ENCODING_DEFAULT; 140 default: 141 return ENCODING_INVALID; 142 } 143 } 144 145 // This function converts Java channel masks to a native channel mask. 146 // validity should be checked with audio_is_output_channel(). 147 static inline audio_channel_mask_t nativeChannelMaskFromJavaChannelMasks( 148 jint channelPositionMask, jint channelIndexMask) 149 { 150 // 0 is the java android.media.AudioFormat.CHANNEL_INVALID value 151 if (channelIndexMask != 0) { // channel index mask takes priority 152 // To convert to a native channel mask, the Java channel index mask 153 // requires adding the index representation. 154 return audio_channel_mask_from_representation_and_bits( 155 AUDIO_CHANNEL_REPRESENTATION_INDEX, 156 channelIndexMask); 157 } 158 // To convert to a native channel mask, the Java channel position mask 159 // requires a shift by 2 to skip the two deprecated channel 160 // configurations "default" and "mono". 161 return (audio_channel_mask_t)((uint32_t)channelPositionMask >> 2); 162 } 163 164 static inline audio_channel_mask_t outChannelMaskToNative(int channelMask) 165 { 166 switch (channelMask) { 167 case CHANNEL_OUT_DEFAULT: 168 case CHANNEL_INVALID: 169 return AUDIO_CHANNEL_NONE; 170 default: 171 return (audio_channel_mask_t)(channelMask>>2); 172 } 173 } 174 175 static inline int outChannelMaskFromNative(audio_channel_mask_t nativeMask) 176 { 177 switch (nativeMask) { 178 case AUDIO_CHANNEL_NONE: 179 return CHANNEL_OUT_DEFAULT; 180 default: 181 return (int)nativeMask<<2; 182 } 183 } 184 185 static inline audio_channel_mask_t inChannelMaskToNative(int channelMask) 186 { 187 return (audio_channel_mask_t)channelMask; 188 } 189 190 static inline int inChannelMaskFromNative(audio_channel_mask_t nativeMask) 191 { 192 return (int)nativeMask; 193 } 194 195 #endif // ANDROID_MEDIA_AUDIOFORMAT_H 196
