audio_hw.h revision 3ad4e1b9949d04ad90d053458b10fa4dfbfa088e
1/* 2 * Copyright (C) 2013-2014 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 QCOM_AUDIO_HW_H 18#define QCOM_AUDIO_HW_H 19 20#include <cutils/str_parms.h> 21#include <cutils/list.h> 22#include <hardware/audio.h> 23 24#include <tinyalsa/asoundlib.h> 25#include <tinycompress/tinycompress.h> 26 27#include <audio_route/audio_route.h> 28#include "voice.h" 29 30#define VISUALIZER_LIBRARY_PATH "/system/lib/soundfx/libqcomvisualizer.so" 31#define OFFLOAD_EFFECTS_BUNDLE_LIBRARY_PATH "/system/lib/soundfx/libqcompostprocbundle.so" 32 33/* Flags used to initialize acdb_settings variable that goes to ACDB library */ 34#define DMIC_FLAG 0x00000002 35#define TTY_MODE_OFF 0x00000010 36#define TTY_MODE_FULL 0x00000020 37#define TTY_MODE_VCO 0x00000040 38#define TTY_MODE_HCO 0x00000080 39#define TTY_MODE_CLEAR 0xFFFFFF0F 40 41#define ACDB_DEV_TYPE_OUT 1 42#define ACDB_DEV_TYPE_IN 2 43 44#define MAX_SUPPORTED_CHANNEL_MASKS 2 45#define DEFAULT_HDMI_OUT_CHANNELS 2 46 47typedef int snd_device_t; 48 49/* These are the supported use cases by the hardware. 50 * Each usecase is mapped to a specific PCM device. 51 * Refer to pcm_device_table[]. 52 */ 53enum { 54 USECASE_INVALID = -1, 55 /* Playback usecases */ 56 USECASE_AUDIO_PLAYBACK_DEEP_BUFFER = 0, 57 USECASE_AUDIO_PLAYBACK_LOW_LATENCY, 58 USECASE_AUDIO_PLAYBACK_MULTI_CH, 59 USECASE_AUDIO_PLAYBACK_OFFLOAD, 60 61 /* HFP Use case*/ 62 USECASE_AUDIO_HFP_SCO, 63 USECASE_AUDIO_HFP_SCO_WB, 64 65 /* Capture usecases */ 66 USECASE_AUDIO_RECORD, 67 USECASE_AUDIO_RECORD_LOW_LATENCY, 68 69 USECASE_VOICE_CALL, 70 71 /* Voice extension usecases */ 72 USECASE_VOICE2_CALL, 73 USECASE_VOLTE_CALL, 74 USECASE_QCHAT_CALL, 75 USECASE_VOWLAN_CALL, 76 USECASE_INCALL_REC_UPLINK, 77 USECASE_INCALL_REC_DOWNLINK, 78 USECASE_INCALL_REC_UPLINK_AND_DOWNLINK, 79 AUDIO_USECASE_MAX 80}; 81 82const char * const use_case_table[AUDIO_USECASE_MAX]; 83 84#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0])) 85 86/* 87 * tinyAlsa library interprets period size as number of frames 88 * one frame = channel_count * sizeof (pcm sample) 89 * so if format = 16-bit PCM and channels = Stereo, frame size = 2 ch * 2 = 4 bytes 90 * DEEP_BUFFER_OUTPUT_PERIOD_SIZE = 1024 means 1024 * 4 = 4096 bytes 91 * We should take care of returning proper size when AudioFlinger queries for 92 * the buffer size of an input/output stream 93 */ 94 95enum { 96 OFFLOAD_CMD_EXIT, /* exit compress offload thread loop*/ 97 OFFLOAD_CMD_DRAIN, /* send a full drain request to DSP */ 98 OFFLOAD_CMD_PARTIAL_DRAIN, /* send a partial drain request to DSP */ 99 OFFLOAD_CMD_WAIT_FOR_BUFFER, /* wait for buffer released by DSP */ 100}; 101 102enum { 103 OFFLOAD_STATE_IDLE, 104 OFFLOAD_STATE_PLAYING, 105 OFFLOAD_STATE_PAUSED, 106}; 107 108struct offload_cmd { 109 struct listnode node; 110 int cmd; 111 int data[]; 112}; 113 114struct stream_out { 115 struct audio_stream_out stream; 116 pthread_mutex_t lock; /* see note below on mutex acquisition order */ 117 pthread_cond_t cond; 118 struct pcm_config config; 119 struct compr_config compr_config; 120 struct pcm *pcm; 121 struct compress *compr; 122 int standby; 123 int pcm_device_id; 124 unsigned int sample_rate; 125 audio_channel_mask_t channel_mask; 126 audio_format_t format; 127 audio_devices_t devices; 128 audio_output_flags_t flags; 129 audio_usecase_t usecase; 130 /* Array of supported channel mask configurations. +1 so that the last entry is always 0 */ 131 audio_channel_mask_t supported_channel_masks[MAX_SUPPORTED_CHANNEL_MASKS + 1]; 132 bool muted; 133 uint64_t written; /* total frames written, not cleared when entering standby */ 134 audio_io_handle_t handle; 135 136 int non_blocking; 137 int playback_started; 138 int offload_state; 139 pthread_cond_t offload_cond; 140 pthread_t offload_thread; 141 struct listnode offload_cmd_list; 142 bool offload_thread_blocked; 143 144 stream_callback_t offload_callback; 145 void *offload_cookie; 146 struct compr_gapless_mdata gapless_mdata; 147 int send_new_metadata; 148 149 struct audio_device *dev; 150}; 151 152struct stream_in { 153 struct audio_stream_in stream; 154 pthread_mutex_t lock; /* see note below on mutex acquisition order */ 155 struct pcm_config config; 156 struct pcm *pcm; 157 int standby; 158 int source; 159 int pcm_device_id; 160 int device; 161 audio_channel_mask_t channel_mask; 162 audio_usecase_t usecase; 163 bool enable_aec; 164 bool enable_ns; 165 166 struct audio_device *dev; 167}; 168 169typedef enum { 170 PCM_PLAYBACK, 171 PCM_CAPTURE, 172 VOICE_CALL, 173 PCM_HFP_CALL 174} usecase_type_t; 175 176union stream_ptr { 177 struct stream_in *in; 178 struct stream_out *out; 179}; 180 181struct audio_usecase { 182 struct listnode list; 183 audio_usecase_t id; 184 usecase_type_t type; 185 audio_devices_t devices; 186 snd_device_t out_snd_device; 187 snd_device_t in_snd_device; 188 union stream_ptr stream; 189}; 190 191struct audio_device { 192 struct audio_hw_device device; 193 pthread_mutex_t lock; /* see note below on mutex acquisition order */ 194 struct mixer *mixer; 195 audio_mode_t mode; 196 struct stream_in *active_input; 197 struct stream_out *primary_output; 198 bool bluetooth_nrec; 199 bool screen_off; 200 int *snd_dev_ref_cnt; 201 struct listnode usecase_list; 202 struct audio_route *audio_route; 203 int acdb_settings; 204 bool speaker_lr_swap; 205 struct voice voice; 206 unsigned int cur_hdmi_channels; 207 bool bt_wb_speech_enabled; 208 209 int snd_card; 210 void *platform; 211 212 void *visualizer_lib; 213 int (*visualizer_start_output)(audio_io_handle_t, int); 214 int (*visualizer_stop_output)(audio_io_handle_t, int); 215 216 /* The pcm_params use_case_table is loaded by adev_verify_devices() upon 217 * calling adev_open(). 218 * 219 * If an entry is not NULL, it can be used to determine if extended precision 220 * or other capabilities are present for the device corresponding to that usecase. 221 */ 222 struct pcm_params *use_case_table[AUDIO_USECASE_MAX]; 223 void *offload_effects_lib; 224 int (*offload_effects_start_output)(audio_io_handle_t, int); 225 int (*offload_effects_stop_output)(audio_io_handle_t, int); 226}; 227 228int pcm_ioctl(void *pcm, int request, ...); 229 230int select_devices(struct audio_device *adev, 231 audio_usecase_t uc_id); 232 233int disable_audio_route(struct audio_device *adev, 234 struct audio_usecase *usecase); 235 236int disable_snd_device(struct audio_device *adev, 237 snd_device_t snd_device); 238 239int enable_snd_device(struct audio_device *adev, 240 snd_device_t snd_device); 241 242int enable_audio_route(struct audio_device *adev, 243 struct audio_usecase *usecase); 244 245struct audio_usecase *get_usecase_from_list(struct audio_device *adev, 246 audio_usecase_t uc_id); 247 248#define LITERAL_TO_STRING(x) #x 249#define CHECK(condition) LOG_ALWAYS_FATAL_IF(!(condition), "%s",\ 250 __FILE__ ":" LITERAL_TO_STRING(__LINE__)\ 251 " ASSERT_FATAL(" #condition ") failed.") 252 253/* 254 * NOTE: when multiple mutexes have to be acquired, always take the 255 * stream_in or stream_out mutex first, followed by the audio_device mutex. 256 */ 257 258#endif // QCOM_AUDIO_HW_H 259