1 /*---------------------------------------------------------------------------* 2 * audioinwrapper.cpp * 3 * * 4 * Copyright 2007, 2008 Nuance Communciations, Inc. * 5 * * 6 * Licensed under the Apache License, Version 2.0 (the 'License'); * 7 * you may not use this file except in compliance with the License. * 8 * * 9 * You may obtain a copy of the License at * 10 * http://www.apache.org/licenses/LICENSE-2.0 * 11 * * 12 * Unless required by applicable law or agreed to in writing, software * 13 * distributed under the License is distributed on an 'AS IS' BASIS, * 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 15 * See the License for the specific language governing permissions and * 16 * limitations under the License. * 17 * * 18 *---------------------------------------------------------------------------*/ 19 20 21 #if defined(ANDROID) && (defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_4__)) 22 23 //#define USE_DEV_EAC_FILE 1 24 25 #if defined(USE_DEV_EAC_FILE) 26 #include <fcntl.h> 27 #define N_CHANNELS 1 28 #else 29 #include <media/AudioRecord.h> 30 #include <media/mediarecorder.h> 31 using namespace android; 32 #endif 33 34 #endif // defined(ANDROID) && (defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_4__)) 35 36 #include "plog.h" 37 38 // #define SAVE_RAW_AUDIO 1 39 40 #ifdef SAVE_RAW_AUDIO 41 #include <sys/time.h> 42 #include <stdio.h> 43 44 45 static FILE *audio_data; 46 static struct timeval buffer_save_audio; 47 #endif 48 49 50 extern "C" 51 { 52 53 #if defined(ANDROID) && (defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_4__)) 54 55 #if defined(USE_DEV_EAC_FILE) 56 static int audiofd = -1; 57 #else 58 static AudioRecord* record; 59 static int sampleRate = 8000; 60 static int numChannels = 1; 61 #endif 62 63 // called before AudioOpen 64 int AudioSetInputFormat(int sample_rate, int channel_count) 65 { 66 #if defined(USE_DEV_EAC_FILE) 67 return 0; 68 #else 69 sampleRate = sample_rate; 70 numChannels = channel_count; 71 return 0; 72 #endif 73 } 74 75 int AudioOpen(void) 76 { 77 #if defined(USE_DEV_EAC_FILE) 78 audiofd = open("/dev/eac", O_RDONLY, 0666); 79 if (audiofd >= 0) { 80 //fcntl(audiofd, F_SETFL, O_NONBLOCK); 81 82 // possibly lame attempt to get Sooner audio input working 83 struct { unsigned long param1, param2, param3; } params = { 11025, 0, 0 }; 84 ioctl(audiofd, 317, ¶ms, sizeof(params)); 85 } 86 87 return audiofd; 88 #else 89 #ifdef SAVE_RAW_AUDIO 90 char file_name [256]; 91 92 gettimeofday ( &buffer_save_audio, NULL ); 93 sprintf ( file_name, "data_%ld_%ld.raw", buffer_save_audio.tv_sec, buffer_save_audio.tv_usec ); 94 audio_data = fopen ( file_name, "w" ); 95 #endif 96 // TODO: get record buffer size from hardware. 97 record = new android::AudioRecord( 98 android::AUDIO_SOURCE_DEFAULT, 99 sampleRate, 100 android::AudioSystem::PCM_16_BIT, 101 (numChannels > 1) ? android::AudioSystem::CHANNEL_IN_STEREO : android::AudioSystem::CHANNEL_IN_MONO, 102 8*1024, 103 0); 104 105 if (!record) return -1; 106 107 return record->start() == NO_ERROR ? 0 : -1; 108 #endif 109 } 110 111 int AudioClose(void) 112 { 113 #if defined(USE_DEV_EAC_FILE) 114 return close(audiofd); 115 #else 116 record->stop(); 117 delete record; 118 #ifdef SAVE_RAW_AUDIO 119 fclose ( audio_data ); 120 #endif 121 return 0; 122 #endif 123 } 124 125 int AudioRead(short *buffer, int frame_count) 126 { 127 int n; 128 #if defined(USE_DEV_EAC_FILE) 129 n = read(audiofd, buffer, frame_count*sizeof(short)*N_CHANNELS); 130 n /= sizeof(short)*N_CHANNELS; 131 return n; 132 #else 133 int nreq = frame_count * sizeof(short); 134 n = record->read(buffer, nreq); 135 if (n > 0) { 136 if (n != nreq) { 137 PLogError ( "AudioRead error: not enough data %d vs %d\n", n, nreq ); 138 } 139 n /= sizeof(short); 140 } 141 #ifdef SAVE_RAW_AUDIO 142 if ( n > 0 ) 143 fwrite ( buffer, 2, n, audio_data ); 144 #endif 145 return n; 146 #endif 147 } 148 149 int AudioSetVolume(int stream_type, int volume) 150 { 151 #if defined(USE_DEV_EAC_FILE) 152 return 0; 153 #else 154 return AudioSystem::setStreamVolume(stream_type, volume, 0); 155 #endif 156 } 157 158 int AudioGetVolume(int stream_type) 159 { 160 #if defined(USE_DEV_EAC_FILE) 161 return 0; 162 #else 163 float v = 0; 164 AudioSystem::getStreamVolume(stream_type, &v, 0); 165 return int(v * 100.0f); 166 #endif 167 } 168 169 #else 170 171 int AudioOpen(void) 172 { 173 return -1; 174 } 175 176 int AudioClose(void) 177 { 178 return -1; 179 } 180 181 int AudioSetInputFormat(int sample_rate, int channel_count) 182 { 183 return -1; 184 } 185 186 int AudioSetOutputFormat(int sample_rate, int channel_count) 187 { 188 return -1; 189 } 190 191 int AudioRead(short *buffer, int frame_count) 192 { 193 return -1; 194 } 195 196 int AudioWrite(short *buffer, int frame_count) 197 { 198 return -1; 199 } 200 201 int AudioSetStreamType(int stream_type) 202 { 203 return -1; 204 } 205 206 int AudioSetVolume(int stream_type, int volume) 207 { 208 return -1; 209 } 210 211 int AudioGetVolume(int stream_type) 212 { 213 return -1; 214 } 215 216 #endif 217 218 } // extern "C" 219
