audio_hw.h revision 3b1816cd594eba53a9869d7b23af36daacf58fa1
1/* 2 * Copyright (C) 2013 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 <hardware/audio.h> 18 19#include <tinyalsa/asoundlib.h> 20 21#include <audio_route/audio_route.h> 22 23#define ACDB_DEV_TYPE_OUT 1 24#define ACDB_DEV_TYPE_IN 2 25 26#define DUALMIC_CONFIG_NONE 0 /* Target does not contain 2 mics */ 27#define DUALMIC_CONFIG_ENDFIRE 1 28#define DUALMIC_CONFIG_BROADSIDE 2 29 30/* Sound devices specific to the platform 31 * The DEVICE_OUT_* and DEVICE_IN_* should be mapped to these sound 32 * devices to enable corresponding mixer paths 33 */ 34typedef enum { 35 SND_DEVICE_NONE = 0, 36 37 /* Playback devices */ 38 SND_DEVICE_MIN, 39 SND_DEVICE_OUT_BEGIN = SND_DEVICE_MIN, 40 SND_DEVICE_OUT_HANDSET = SND_DEVICE_OUT_BEGIN, 41 SND_DEVICE_OUT_SPEAKER, 42 SND_DEVICE_OUT_HEADPHONES, 43 SND_DEVICE_OUT_SPEAKER_AND_HEADPHONES, 44 SND_DEVICE_OUT_VOICE_SPEAKER, 45 SND_DEVICE_OUT_VOICE_HEADPHONES, 46 SND_DEVICE_OUT_HDMI, 47 SND_DEVICE_OUT_SPEAKER_AND_HDMI, 48 SND_DEVICE_OUT_BT_SCO, 49 SND_DEVICE_OUT_VOICE_HANDSET_TMUS, 50 SND_DEVICE_OUT_VOICE_TTY_FULL_HEADPHONES, 51 SND_DEVICE_OUT_VOICE_TTY_VCO_HEADPHONES, 52 SND_DEVICE_OUT_VOICE_TTY_HCO_HANDSET, 53 SND_DEVICE_OUT_END, 54 55 /* 56 * Note: IN_BEGIN should be same as OUT_END because total number of devices 57 * SND_DEVICES_MAX should not exceed MAX_RX + MAX_TX devices. 58 */ 59 /* Capture devices */ 60 SND_DEVICE_IN_BEGIN = SND_DEVICE_OUT_END, 61 SND_DEVICE_IN_HANDSET_MIC = SND_DEVICE_IN_BEGIN, 62 SND_DEVICE_IN_SPEAKER_MIC, 63 SND_DEVICE_IN_HEADSET_MIC, 64 SND_DEVICE_IN_VOICE_SPEAKER_MIC, 65 SND_DEVICE_IN_VOICE_HEADSET_MIC, 66 SND_DEVICE_IN_HDMI_MIC, 67 SND_DEVICE_IN_BT_SCO_MIC, 68 SND_DEVICE_IN_CAMCORDER_MIC, 69 SND_DEVICE_IN_VOICE_DMIC_EF, 70 SND_DEVICE_IN_VOICE_DMIC_BS, 71 SND_DEVICE_IN_VOICE_DMIC_EF_TMUS, 72 SND_DEVICE_IN_VOICE_SPEAKER_DMIC_EF, 73 SND_DEVICE_IN_VOICE_SPEAKER_DMIC_BS, 74 SND_DEVICE_IN_VOICE_TTY_FULL_HEADSET_MIC, 75 SND_DEVICE_IN_VOICE_TTY_VCO_HANDSET_MIC, 76 SND_DEVICE_IN_VOICE_TTY_HCO_HEADSET_MIC, 77 SND_DEVICE_IN_VOICE_REC_MIC, 78 SND_DEVICE_IN_VOICE_REC_DMIC_EF, 79 SND_DEVICE_IN_VOICE_REC_DMIC_BS, 80 SND_DEVICE_IN_VOICE_REC_DMIC_EF_FLUENCE, 81 SND_DEVICE_IN_VOICE_REC_DMIC_BS_FLUENCE, 82 SND_DEVICE_IN_END, 83 84 SND_DEVICE_MAX = SND_DEVICE_IN_END, 85 86} snd_device_t; 87 88 89/* These are the supported use cases by the hardware. 90 * Each usecase is mapped to a specific PCM device. 91 * Refer to pcm_device_table[]. 92 */ 93typedef enum { 94 USECASE_INVALID = -1, 95 /* Playback usecases */ 96 USECASE_AUDIO_PLAYBACK_DEEP_BUFFER = 0, 97 USECASE_AUDIO_PLAYBACK_LOW_LATENCY, 98 USECASE_AUDIO_PLAYBACK_MULTI_CH, 99 100 /* Capture usecases */ 101 USECASE_AUDIO_RECORD, 102 USECASE_AUDIO_RECORD_LOW_LATENCY, 103 104 USECASE_VOICE_CALL, 105 106 AUDIO_USECASE_MAX 107} audio_usecase_t; 108 109#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 110 111#define SOUND_CARD 0 112 113#define DEFAULT_OUTPUT_SAMPLING_RATE 48000 114 115/* 116 * tinyAlsa library interprets period size as number of frames 117 * one frame = channel_count * sizeof (pcm sample) 118 * so if format = 16-bit PCM and channels = Stereo, frame size = 2 ch * 2 = 4 bytes 119 * DEEP_BUFFER_OUTPUT_PERIOD_SIZE = 1024 means 1024 * 4 = 4096 bytes 120 * We should take care of returning proper size when AudioFlinger queries for 121 * the buffer size of an input/output stream 122 */ 123#define DEEP_BUFFER_OUTPUT_PERIOD_SIZE 1024 124#define DEEP_BUFFER_OUTPUT_PERIOD_COUNT 8 125 126#define LOW_LATENCY_OUTPUT_PERIOD_SIZE 256 127#define LOW_LATENCY_OUTPUT_PERIOD_COUNT 2 128 129#define HDMI_MULTI_PERIOD_SIZE 336 130#define HDMI_MULTI_PERIOD_COUNT 8 131#define HDMI_MULTI_DEFAULT_CHANNEL_COUNT 6 132#define HDMI_MULTI_PERIOD_BYTES (HDMI_MULTI_PERIOD_SIZE * HDMI_MULTI_DEFAULT_CHANNEL_COUNT * 2) 133 134#define AUDIO_CAPTURE_PERIOD_SIZE 320 135#define AUDIO_CAPTURE_PERIOD_COUNT 2 136 137#define MAX_SUPPORTED_CHANNEL_MASKS 2 138 139struct stream_out { 140 struct audio_stream_out stream; 141 pthread_mutex_t lock; /* see note below on mutex acquisition order */ 142 struct pcm_config config; 143 struct pcm *pcm; 144 int standby; 145 int pcm_device_id; 146 audio_channel_mask_t channel_mask; 147 audio_devices_t devices; 148 audio_output_flags_t flags; 149 audio_usecase_t usecase; 150 /* Array of supported channel mask configurations. +1 so that the last entry is always 0 */ 151 audio_channel_mask_t supported_channel_masks[MAX_SUPPORTED_CHANNEL_MASKS + 1]; 152 153 struct audio_device *dev; 154}; 155 156struct stream_in { 157 struct audio_stream_in stream; 158 pthread_mutex_t lock; /* see note below on mutex acquisition order */ 159 struct pcm_config config; 160 struct pcm *pcm; 161 int standby; 162 int source; 163 int pcm_device_id; 164 int device; 165 audio_channel_mask_t channel_mask; 166 audio_usecase_t usecase; 167 168 struct audio_device *dev; 169}; 170 171typedef enum { 172 PCM_PLAYBACK, 173 PCM_CAPTURE, 174 VOICE_CALL 175} usecase_type_t; 176 177// To store active use cases. 178struct audio_usecase { 179 struct listnode list; 180 audio_usecase_t id; 181 usecase_type_t type; 182 audio_devices_t devices; 183 struct audio_usecase *next; 184}; 185 186typedef void (*acdb_deallocate_t)(); 187typedef int (*acdb_init_t)(); 188typedef void (*acdb_send_audio_cal_t)(int, int); 189typedef void (*acdb_send_voice_cal_t)(int, int); 190 191typedef int (*csd_client_init_t)(); 192typedef int (*csd_client_deinit_t)(); 193typedef int (*csd_disable_device_t)(); 194typedef int (*csd_enable_device_t)(int, int, uint32_t); 195typedef int (*csd_volume_t)(int); 196typedef int (*csd_mic_mute_t)(int); 197typedef int (*csd_start_voice_t)(); 198typedef int (*csd_stop_voice_t)(); 199 200struct audio_device { 201 struct audio_hw_device device; 202 pthread_mutex_t lock; /* see note below on mutex acquisition order */ 203 struct mixer *mixer; 204 audio_mode_t mode; 205 audio_devices_t out_device; 206 struct stream_in *active_input; 207 int in_call; 208 float voice_volume; 209 bool mic_mute; 210 int tty_mode; 211 bool bluetooth_nrec; 212 bool screen_off; 213 struct pcm *voice_call_rx; 214 struct pcm *voice_call_tx; 215 snd_device_t cur_out_snd_device; 216 snd_device_t cur_in_snd_device; 217 bool out_snd_device_active; 218 bool in_snd_device_active; 219 struct listnode usecase_list; 220 struct audio_route *audio_route; 221 int acdb_settings; 222 223 bool mic_type_analog; 224 bool fluence_in_voice_call; 225 bool fluence_in_voice_rec; 226 int dualmic_config; 227 228 /* Audio calibration related functions */ 229 void *acdb_handle; 230 acdb_init_t acdb_init; 231 acdb_deallocate_t acdb_deallocate; 232 acdb_send_audio_cal_t acdb_send_audio_cal; 233 acdb_send_voice_cal_t acdb_send_voice_cal; 234 235 /* CSD Client related functions for voice call */ 236 void *csd_client; 237 csd_client_init_t csd_client_init; 238 csd_client_deinit_t csd_client_deinit; 239 csd_disable_device_t csd_disable_device; 240 csd_enable_device_t csd_enable_device; 241 csd_volume_t csd_volume; 242 csd_mic_mute_t csd_mic_mute; 243 csd_start_voice_t csd_start_voice; 244 csd_stop_voice_t csd_stop_voice; 245}; 246 247/* 248 * NOTE: when multiple mutexes have to be acquired, always take the 249 * stream_in or stream_out mutex first, followed by the audio_device mutex. 250 */ 251 252struct pcm_config pcm_config_deep_buffer = { 253 .channels = 2, 254 .rate = DEFAULT_OUTPUT_SAMPLING_RATE, 255 .period_size = DEEP_BUFFER_OUTPUT_PERIOD_SIZE, 256 .period_count = DEEP_BUFFER_OUTPUT_PERIOD_COUNT, 257 .format = PCM_FORMAT_S16_LE, 258 .start_threshold = DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4, 259 .avail_min = DEEP_BUFFER_OUTPUT_PERIOD_SIZE / 4, 260}; 261 262struct pcm_config pcm_config_low_latency = { 263 .channels = 2, 264 .rate = DEFAULT_OUTPUT_SAMPLING_RATE, 265 .period_size = LOW_LATENCY_OUTPUT_PERIOD_SIZE, 266 .period_count = LOW_LATENCY_OUTPUT_PERIOD_COUNT, 267 .format = PCM_FORMAT_S16_LE, 268 .start_threshold = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4, 269 .avail_min = LOW_LATENCY_OUTPUT_PERIOD_SIZE / 4, 270}; 271 272struct pcm_config pcm_config_hdmi_multi = { 273 .channels = HDMI_MULTI_DEFAULT_CHANNEL_COUNT, /* changed when the stream is opened */ 274 .rate = DEFAULT_OUTPUT_SAMPLING_RATE, /* changed when the stream is opened */ 275 .period_size = HDMI_MULTI_PERIOD_SIZE, 276 .period_count = HDMI_MULTI_PERIOD_COUNT, 277 .format = PCM_FORMAT_S16_LE, 278 .start_threshold = 0, 279 .avail_min = 0, 280}; 281 282struct pcm_config pcm_config_audio_capture = { 283 .channels = 2, 284 .period_size = AUDIO_CAPTURE_PERIOD_SIZE, 285 .period_count = AUDIO_CAPTURE_PERIOD_COUNT, 286 .format = PCM_FORMAT_S16_LE, 287}; 288 289struct pcm_config pcm_config_voice_call = { 290 .channels = 1, 291 .rate = 8000, 292 .period_size = 160, 293 .period_count = 2, 294 .format = PCM_FORMAT_S16_LE, 295}; 296 297