Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 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 | #define LOG_TAG "audio_hw_primary" |
| 18 | /*#define LOG_NDEBUG 0*/ |
| 19 | |
| 20 | #include <errno.h> |
| 21 | #include <pthread.h> |
| 22 | #include <stdint.h> |
| 23 | #include <stdlib.h> |
| 24 | #include <sys/time.h> |
| 25 | |
| 26 | #include <cutils/log.h> |
| 27 | #include <cutils/properties.h> |
| 28 | #include <cutils/str_parms.h> |
| 29 | |
| 30 | #include <hardware/audio.h> |
| 31 | #include <hardware/hardware.h> |
| 32 | |
| 33 | #include <system/audio.h> |
| 34 | |
| 35 | #include <tinyalsa/asoundlib.h> |
| 36 | |
| 37 | #include <audio_utils/resampler.h> |
Simon Wilson | c622165 | 2013-01-28 17:00:41 -0800 | [diff] [blame] | 38 | #include <audio_route/audio_route.h> |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 39 | |
| 40 | #define PCM_CARD 1 |
| 41 | #define PCM_DEVICE 0 |
| 42 | #define PCM_DEVICE_SCO 2 |
| 43 | |
Simon Wilson | c622165 | 2013-01-28 17:00:41 -0800 | [diff] [blame] | 44 | #define MIXER_CARD 1 |
| 45 | |
Glenn Kasten | 320d01f | 2012-06-04 13:52:34 -0700 | [diff] [blame] | 46 | #define OUT_PERIOD_SIZE 512 |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 47 | #define OUT_SHORT_PERIOD_COUNT 2 |
| 48 | #define OUT_LONG_PERIOD_COUNT 8 |
| 49 | #define OUT_SAMPLING_RATE 44100 |
| 50 | |
| 51 | #define IN_PERIOD_SIZE 1024 |
| 52 | #define IN_PERIOD_COUNT 4 |
| 53 | #define IN_SAMPLING_RATE 44100 |
| 54 | |
| 55 | #define SCO_PERIOD_SIZE 256 |
| 56 | #define SCO_PERIOD_COUNT 4 |
| 57 | #define SCO_SAMPLING_RATE 8000 |
| 58 | |
| 59 | /* minimum sleep time in out_write() when write threshold is not reached */ |
| 60 | #define MIN_WRITE_SLEEP_US 2000 |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 61 | #define MAX_WRITE_SLEEP_US ((OUT_PERIOD_SIZE * OUT_SHORT_PERIOD_COUNT * 1000000) \ |
| 62 | / OUT_SAMPLING_RATE) |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 63 | |
| 64 | enum { |
| 65 | OUT_BUFFER_TYPE_UNKNOWN, |
| 66 | OUT_BUFFER_TYPE_SHORT, |
| 67 | OUT_BUFFER_TYPE_LONG, |
| 68 | }; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 69 | |
| 70 | struct pcm_config pcm_config_out = { |
| 71 | .channels = 2, |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 72 | .rate = OUT_SAMPLING_RATE, |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 73 | .period_size = OUT_PERIOD_SIZE, |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 74 | .period_count = OUT_LONG_PERIOD_COUNT, |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 75 | .format = PCM_FORMAT_S16_LE, |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 76 | .start_threshold = OUT_PERIOD_SIZE * OUT_SHORT_PERIOD_COUNT, |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 77 | }; |
| 78 | |
| 79 | struct pcm_config pcm_config_in = { |
| 80 | .channels = 2, |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 81 | .rate = IN_SAMPLING_RATE, |
| 82 | .period_size = IN_PERIOD_SIZE, |
| 83 | .period_count = IN_PERIOD_COUNT, |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 84 | .format = PCM_FORMAT_S16_LE, |
| 85 | .start_threshold = 1, |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 86 | .stop_threshold = (IN_PERIOD_SIZE * IN_PERIOD_COUNT), |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 87 | }; |
| 88 | |
| 89 | struct pcm_config pcm_config_sco = { |
| 90 | .channels = 1, |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 91 | .rate = SCO_SAMPLING_RATE, |
| 92 | .period_size = SCO_PERIOD_SIZE, |
| 93 | .period_count = SCO_PERIOD_COUNT, |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 94 | .format = PCM_FORMAT_S16_LE, |
| 95 | }; |
| 96 | |
| 97 | struct audio_device { |
| 98 | struct audio_hw_device hw_device; |
| 99 | |
| 100 | pthread_mutex_t lock; /* see note below on mutex acquisition order */ |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 101 | unsigned int out_device; |
| 102 | unsigned int in_device; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 103 | bool standby; |
| 104 | bool mic_mute; |
| 105 | struct audio_route *ar; |
| 106 | int orientation; |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 107 | bool screen_off; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 108 | |
| 109 | struct stream_out *active_out; |
| 110 | struct stream_in *active_in; |
| 111 | }; |
| 112 | |
| 113 | struct stream_out { |
| 114 | struct audio_stream_out stream; |
| 115 | |
| 116 | pthread_mutex_t lock; /* see note below on mutex acquisition order */ |
| 117 | struct pcm *pcm; |
| 118 | struct pcm_config *pcm_config; |
| 119 | bool standby; |
| 120 | |
| 121 | struct resampler_itfe *resampler; |
| 122 | int16_t *buffer; |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 123 | size_t buffer_frames; |
| 124 | |
| 125 | int write_threshold; |
| 126 | int cur_write_threshold; |
| 127 | int buffer_type; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 128 | |
| 129 | struct audio_device *dev; |
| 130 | }; |
| 131 | |
| 132 | struct stream_in { |
| 133 | struct audio_stream_in stream; |
| 134 | |
| 135 | pthread_mutex_t lock; /* see note below on mutex acquisition order */ |
| 136 | struct pcm *pcm; |
| 137 | struct pcm_config *pcm_config; |
| 138 | bool standby; |
| 139 | |
| 140 | unsigned int requested_rate; |
| 141 | struct resampler_itfe *resampler; |
| 142 | struct resampler_buffer_provider buf_provider; |
| 143 | int16_t *buffer; |
| 144 | size_t buffer_size; |
| 145 | size_t frames_in; |
| 146 | int read_status; |
| 147 | |
| 148 | struct audio_device *dev; |
| 149 | }; |
| 150 | |
| 151 | enum { |
| 152 | ORIENTATION_LANDSCAPE, |
| 153 | ORIENTATION_PORTRAIT, |
| 154 | ORIENTATION_SQUARE, |
| 155 | ORIENTATION_UNDEFINED, |
| 156 | }; |
| 157 | |
| 158 | static uint32_t out_get_sample_rate(const struct audio_stream *stream); |
| 159 | static size_t out_get_buffer_size(const struct audio_stream *stream); |
| 160 | static audio_format_t out_get_format(const struct audio_stream *stream); |
| 161 | static uint32_t in_get_sample_rate(const struct audio_stream *stream); |
| 162 | static size_t in_get_buffer_size(const struct audio_stream *stream); |
| 163 | static audio_format_t in_get_format(const struct audio_stream *stream); |
| 164 | static int get_next_buffer(struct resampler_buffer_provider *buffer_provider, |
| 165 | struct resampler_buffer* buffer); |
| 166 | static void release_buffer(struct resampler_buffer_provider *buffer_provider, |
| 167 | struct resampler_buffer* buffer); |
| 168 | |
| 169 | /* |
| 170 | * NOTE: when multiple mutexes have to be acquired, always take the |
| 171 | * audio_device mutex first, followed by the stream_in and/or |
| 172 | * stream_out mutexes. |
| 173 | */ |
| 174 | |
| 175 | /* Helper functions */ |
| 176 | |
| 177 | static void select_devices(struct audio_device *adev) |
| 178 | { |
| 179 | int headphone_on; |
| 180 | int speaker_on; |
Simon Wilson | c6e5c50 | 2012-10-26 15:31:28 -0700 | [diff] [blame] | 181 | int docked; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 182 | int main_mic_on; |
| 183 | |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 184 | headphone_on = adev->out_device & (AUDIO_DEVICE_OUT_WIRED_HEADSET | |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 185 | AUDIO_DEVICE_OUT_WIRED_HEADPHONE); |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 186 | speaker_on = adev->out_device & AUDIO_DEVICE_OUT_SPEAKER; |
Simon Wilson | c6e5c50 | 2012-10-26 15:31:28 -0700 | [diff] [blame] | 187 | docked = adev->out_device & AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET; |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 188 | main_mic_on = adev->in_device & AUDIO_DEVICE_IN_BUILTIN_MIC; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 189 | |
Simon Wilson | c622165 | 2013-01-28 17:00:41 -0800 | [diff] [blame] | 190 | audio_route_reset(adev->ar); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 191 | |
Simon Wilson | 0e11357 | 2012-10-26 10:02:48 -0700 | [diff] [blame] | 192 | if (speaker_on) |
Ramanan Rajeswaran | bc5583c | 2012-09-10 09:50:37 -0700 | [diff] [blame] | 193 | audio_route_apply_path(adev->ar, "speaker"); |
Simon Wilson | c9cc6bb | 2012-05-31 11:52:09 -0700 | [diff] [blame] | 194 | if (headphone_on) |
| 195 | audio_route_apply_path(adev->ar, "headphone"); |
Simon Wilson | c6e5c50 | 2012-10-26 15:31:28 -0700 | [diff] [blame] | 196 | if (docked) |
| 197 | audio_route_apply_path(adev->ar, "dock"); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 198 | if (main_mic_on) { |
| 199 | if (adev->orientation == ORIENTATION_LANDSCAPE) |
| 200 | audio_route_apply_path(adev->ar, "main-mic-left"); |
| 201 | else |
| 202 | audio_route_apply_path(adev->ar, "main-mic-top"); |
| 203 | } |
| 204 | |
Simon Wilson | c622165 | 2013-01-28 17:00:41 -0800 | [diff] [blame] | 205 | audio_route_update_mixer(adev->ar); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 206 | |
Simon Wilson | c6e5c50 | 2012-10-26 15:31:28 -0700 | [diff] [blame] | 207 | ALOGV("hp=%c speaker=%c dock=%c main-mic=%c", headphone_on ? 'y' : 'n', |
| 208 | speaker_on ? 'y' : 'n', docked ? 'y' : 'n', main_mic_on ? 'y' : 'n'); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 209 | } |
| 210 | |
| 211 | /* must be called with hw device and output stream mutexes locked */ |
| 212 | static void do_out_standby(struct stream_out *out) |
| 213 | { |
| 214 | struct audio_device *adev = out->dev; |
| 215 | |
| 216 | if (!out->standby) { |
| 217 | pcm_close(out->pcm); |
| 218 | out->pcm = NULL; |
| 219 | adev->active_out = NULL; |
| 220 | if (out->resampler) { |
| 221 | release_resampler(out->resampler); |
| 222 | out->resampler = NULL; |
| 223 | } |
| 224 | if (out->buffer) { |
| 225 | free(out->buffer); |
| 226 | out->buffer = NULL; |
| 227 | } |
| 228 | out->standby = true; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | /* must be called with hw device and input stream mutexes locked */ |
| 233 | static void do_in_standby(struct stream_in *in) |
| 234 | { |
| 235 | struct audio_device *adev = in->dev; |
| 236 | |
| 237 | if (!in->standby) { |
| 238 | pcm_close(in->pcm); |
| 239 | in->pcm = NULL; |
| 240 | adev->active_in = NULL; |
| 241 | if (in->resampler) { |
| 242 | release_resampler(in->resampler); |
| 243 | in->resampler = NULL; |
| 244 | } |
| 245 | if (in->buffer) { |
| 246 | free(in->buffer); |
| 247 | in->buffer = NULL; |
| 248 | } |
| 249 | in->standby = true; |
| 250 | } |
| 251 | } |
| 252 | |
| 253 | /* must be called with hw device and output stream mutexes locked */ |
| 254 | static int start_output_stream(struct stream_out *out) |
| 255 | { |
| 256 | struct audio_device *adev = out->dev; |
| 257 | unsigned int device; |
| 258 | int ret; |
| 259 | |
| 260 | /* |
| 261 | * Due to the lack of sample rate converters in the SoC, |
| 262 | * it greatly simplifies things to have only the main |
| 263 | * (speaker/headphone) PCM or the BC SCO PCM open at |
| 264 | * the same time. |
| 265 | */ |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 266 | if (adev->out_device & AUDIO_DEVICE_OUT_ALL_SCO) { |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 267 | device = PCM_DEVICE_SCO; |
| 268 | out->pcm_config = &pcm_config_sco; |
| 269 | } else { |
| 270 | device = PCM_DEVICE; |
| 271 | out->pcm_config = &pcm_config_out; |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 272 | out->buffer_type = OUT_BUFFER_TYPE_UNKNOWN; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 273 | } |
| 274 | |
| 275 | /* |
| 276 | * All open PCMs can only use a single group of rates at once: |
| 277 | * Group 1: 11.025, 22.05, 44.1 |
| 278 | * Group 2: 8, 16, 32, 48 |
| 279 | * Group 1 is used for digital audio playback since 44.1 is |
| 280 | * the most common rate, but group 2 is required for SCO. |
| 281 | */ |
| 282 | if (adev->active_in) { |
Eric Laurent | 602db27 | 2012-08-29 18:51:31 -0700 | [diff] [blame] | 283 | struct stream_in *in = adev->active_in; |
| 284 | pthread_mutex_lock(&in->lock); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 285 | if (((out->pcm_config->rate % 8000 == 0) && |
Eric Laurent | 602db27 | 2012-08-29 18:51:31 -0700 | [diff] [blame] | 286 | (in->pcm_config->rate % 8000) != 0) || |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 287 | ((out->pcm_config->rate % 11025 == 0) && |
Eric Laurent | 602db27 | 2012-08-29 18:51:31 -0700 | [diff] [blame] | 288 | (in->pcm_config->rate % 11025) != 0)) |
| 289 | do_in_standby(in); |
| 290 | pthread_mutex_unlock(&in->lock); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 291 | } |
| 292 | |
| 293 | out->pcm = pcm_open(PCM_CARD, device, PCM_OUT | PCM_NORESTART, out->pcm_config); |
| 294 | |
| 295 | if (out->pcm && !pcm_is_ready(out->pcm)) { |
| 296 | ALOGE("pcm_open(out) failed: %s", pcm_get_error(out->pcm)); |
| 297 | pcm_close(out->pcm); |
| 298 | return -ENOMEM; |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * If the stream rate differs from the PCM rate, we need to |
| 303 | * create a resampler. |
| 304 | */ |
| 305 | if (out_get_sample_rate(&out->stream.common) != out->pcm_config->rate) { |
| 306 | ret = create_resampler(out_get_sample_rate(&out->stream.common), |
| 307 | out->pcm_config->rate, |
| 308 | out->pcm_config->channels, |
| 309 | RESAMPLER_QUALITY_DEFAULT, |
| 310 | NULL, |
| 311 | &out->resampler); |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 312 | out->buffer_frames = (pcm_config_out.period_size * out->pcm_config->rate) / |
| 313 | out_get_sample_rate(&out->stream.common) + 1; |
| 314 | |
| 315 | out->buffer = malloc(pcm_frames_to_bytes(out->pcm, out->buffer_frames)); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 316 | } |
| 317 | |
| 318 | adev->active_out = out; |
| 319 | |
| 320 | return 0; |
| 321 | } |
| 322 | |
| 323 | /* must be called with hw device and input stream mutexes locked */ |
| 324 | static int start_input_stream(struct stream_in *in) |
| 325 | { |
| 326 | struct audio_device *adev = in->dev; |
| 327 | unsigned int device; |
| 328 | int ret; |
| 329 | |
| 330 | /* |
| 331 | * Due to the lack of sample rate converters in the SoC, |
| 332 | * it greatly simplifies things to have only the main |
| 333 | * mic PCM or the BC SCO PCM open at the same time. |
| 334 | */ |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 335 | if (adev->in_device & AUDIO_DEVICE_IN_ALL_SCO) { |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 336 | device = PCM_DEVICE_SCO; |
| 337 | in->pcm_config = &pcm_config_sco; |
| 338 | } else { |
| 339 | device = PCM_DEVICE; |
| 340 | in->pcm_config = &pcm_config_in; |
| 341 | } |
| 342 | |
| 343 | /* |
| 344 | * All open PCMs can only use a single group of rates at once: |
| 345 | * Group 1: 11.025, 22.05, 44.1 |
| 346 | * Group 2: 8, 16, 32, 48 |
| 347 | * Group 1 is used for digital audio playback since 44.1 is |
| 348 | * the most common rate, but group 2 is required for SCO. |
| 349 | */ |
| 350 | if (adev->active_out) { |
Eric Laurent | 602db27 | 2012-08-29 18:51:31 -0700 | [diff] [blame] | 351 | struct stream_out *out = adev->active_out; |
| 352 | pthread_mutex_lock(&out->lock); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 353 | if (((in->pcm_config->rate % 8000 == 0) && |
Eric Laurent | 602db27 | 2012-08-29 18:51:31 -0700 | [diff] [blame] | 354 | (out->pcm_config->rate % 8000) != 0) || |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 355 | ((in->pcm_config->rate % 11025 == 0) && |
Eric Laurent | 602db27 | 2012-08-29 18:51:31 -0700 | [diff] [blame] | 356 | (out->pcm_config->rate % 11025) != 0)) |
| 357 | do_out_standby(out); |
| 358 | pthread_mutex_unlock(&out->lock); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 359 | } |
| 360 | |
| 361 | in->pcm = pcm_open(PCM_CARD, device, PCM_IN, in->pcm_config); |
| 362 | |
| 363 | if (in->pcm && !pcm_is_ready(in->pcm)) { |
| 364 | ALOGE("pcm_open(in) failed: %s", pcm_get_error(in->pcm)); |
| 365 | pcm_close(in->pcm); |
| 366 | return -ENOMEM; |
| 367 | } |
| 368 | |
| 369 | /* |
| 370 | * If the stream rate differs from the PCM rate, we need to |
| 371 | * create a resampler. |
| 372 | */ |
| 373 | if (in_get_sample_rate(&in->stream.common) != in->pcm_config->rate) { |
| 374 | in->buf_provider.get_next_buffer = get_next_buffer; |
| 375 | in->buf_provider.release_buffer = release_buffer; |
| 376 | |
| 377 | ret = create_resampler(in->pcm_config->rate, |
| 378 | in_get_sample_rate(&in->stream.common), |
| 379 | 1, |
| 380 | RESAMPLER_QUALITY_DEFAULT, |
| 381 | &in->buf_provider, |
| 382 | &in->resampler); |
| 383 | } |
| 384 | in->buffer_size = pcm_frames_to_bytes(in->pcm, |
| 385 | in->pcm_config->period_size); |
| 386 | in->buffer = malloc(in->buffer_size); |
Eric Laurent | aecc286 | 2012-08-22 16:13:48 -0700 | [diff] [blame] | 387 | in->frames_in = 0; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 388 | |
| 389 | adev->active_in = in; |
| 390 | |
| 391 | return 0; |
| 392 | } |
| 393 | |
| 394 | static int get_next_buffer(struct resampler_buffer_provider *buffer_provider, |
| 395 | struct resampler_buffer* buffer) |
| 396 | { |
| 397 | struct stream_in *in; |
| 398 | |
| 399 | if (buffer_provider == NULL || buffer == NULL) |
| 400 | return -EINVAL; |
| 401 | |
| 402 | in = (struct stream_in *)((char *)buffer_provider - |
| 403 | offsetof(struct stream_in, buf_provider)); |
| 404 | |
| 405 | if (in->pcm == NULL) { |
| 406 | buffer->raw = NULL; |
| 407 | buffer->frame_count = 0; |
| 408 | in->read_status = -ENODEV; |
| 409 | return -ENODEV; |
| 410 | } |
| 411 | |
| 412 | if (in->frames_in == 0) { |
| 413 | in->read_status = pcm_read(in->pcm, |
| 414 | (void*)in->buffer, |
| 415 | in->buffer_size); |
| 416 | if (in->read_status != 0) { |
| 417 | ALOGE("get_next_buffer() pcm_read error %d", in->read_status); |
| 418 | buffer->raw = NULL; |
| 419 | buffer->frame_count = 0; |
| 420 | return in->read_status; |
| 421 | } |
| 422 | in->frames_in = in->pcm_config->period_size; |
| 423 | if (in->pcm_config->channels == 2) { |
| 424 | unsigned int i; |
| 425 | |
| 426 | /* Discard right channel */ |
| 427 | for (i = 1; i < in->frames_in; i++) |
| 428 | in->buffer[i] = in->buffer[i * 2]; |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | buffer->frame_count = (buffer->frame_count > in->frames_in) ? |
| 433 | in->frames_in : buffer->frame_count; |
| 434 | buffer->i16 = in->buffer + (in->pcm_config->period_size - in->frames_in); |
| 435 | |
| 436 | return in->read_status; |
| 437 | |
| 438 | } |
| 439 | |
| 440 | static void release_buffer(struct resampler_buffer_provider *buffer_provider, |
| 441 | struct resampler_buffer* buffer) |
| 442 | { |
| 443 | struct stream_in *in; |
| 444 | |
| 445 | if (buffer_provider == NULL || buffer == NULL) |
| 446 | return; |
| 447 | |
| 448 | in = (struct stream_in *)((char *)buffer_provider - |
| 449 | offsetof(struct stream_in, buf_provider)); |
| 450 | |
| 451 | in->frames_in -= buffer->frame_count; |
| 452 | } |
| 453 | |
| 454 | /* read_frames() reads frames from kernel driver, down samples to capture rate |
| 455 | * if necessary and output the number of frames requested to the buffer specified */ |
| 456 | static ssize_t read_frames(struct stream_in *in, void *buffer, ssize_t frames) |
| 457 | { |
| 458 | ssize_t frames_wr = 0; |
| 459 | |
| 460 | while (frames_wr < frames) { |
| 461 | size_t frames_rd = frames - frames_wr; |
| 462 | if (in->resampler != NULL) { |
| 463 | in->resampler->resample_from_provider(in->resampler, |
| 464 | (int16_t *)((char *)buffer + |
| 465 | frames_wr * audio_stream_frame_size(&in->stream.common)), |
| 466 | &frames_rd); |
| 467 | } else { |
| 468 | struct resampler_buffer buf = { |
| 469 | { raw : NULL, }, |
| 470 | frame_count : frames_rd, |
| 471 | }; |
| 472 | get_next_buffer(&in->buf_provider, &buf); |
| 473 | if (buf.raw != NULL) { |
| 474 | memcpy((char *)buffer + |
| 475 | frames_wr * audio_stream_frame_size(&in->stream.common), |
| 476 | buf.raw, |
| 477 | buf.frame_count * audio_stream_frame_size(&in->stream.common)); |
| 478 | frames_rd = buf.frame_count; |
| 479 | } |
| 480 | release_buffer(&in->buf_provider, &buf); |
| 481 | } |
| 482 | /* in->read_status is updated by getNextBuffer() also called by |
| 483 | * in->resampler->resample_from_provider() */ |
| 484 | if (in->read_status != 0) |
| 485 | return in->read_status; |
| 486 | |
| 487 | frames_wr += frames_rd; |
| 488 | } |
| 489 | return frames_wr; |
| 490 | } |
| 491 | |
| 492 | /* API functions */ |
| 493 | |
| 494 | static uint32_t out_get_sample_rate(const struct audio_stream *stream) |
| 495 | { |
| 496 | return pcm_config_out.rate; |
| 497 | } |
| 498 | |
| 499 | static int out_set_sample_rate(struct audio_stream *stream, uint32_t rate) |
| 500 | { |
| 501 | return -ENOSYS; |
| 502 | } |
| 503 | |
| 504 | static size_t out_get_buffer_size(const struct audio_stream *stream) |
| 505 | { |
| 506 | return pcm_config_out.period_size * |
| 507 | audio_stream_frame_size((struct audio_stream *)stream); |
| 508 | } |
| 509 | |
| 510 | static uint32_t out_get_channels(const struct audio_stream *stream) |
| 511 | { |
| 512 | return AUDIO_CHANNEL_OUT_STEREO; |
| 513 | } |
| 514 | |
| 515 | static audio_format_t out_get_format(const struct audio_stream *stream) |
| 516 | { |
| 517 | return AUDIO_FORMAT_PCM_16_BIT; |
| 518 | } |
| 519 | |
| 520 | static int out_set_format(struct audio_stream *stream, audio_format_t format) |
| 521 | { |
| 522 | return -ENOSYS; |
| 523 | } |
| 524 | |
| 525 | static int out_standby(struct audio_stream *stream) |
| 526 | { |
| 527 | struct stream_out *out = (struct stream_out *)stream; |
| 528 | |
| 529 | pthread_mutex_lock(&out->dev->lock); |
| 530 | pthread_mutex_lock(&out->lock); |
| 531 | do_out_standby(out); |
| 532 | pthread_mutex_unlock(&out->lock); |
| 533 | pthread_mutex_unlock(&out->dev->lock); |
| 534 | |
| 535 | return 0; |
| 536 | } |
| 537 | |
| 538 | static int out_dump(const struct audio_stream *stream, int fd) |
| 539 | { |
| 540 | return 0; |
| 541 | } |
| 542 | |
| 543 | static int out_set_parameters(struct audio_stream *stream, const char *kvpairs) |
| 544 | { |
| 545 | struct stream_out *out = (struct stream_out *)stream; |
| 546 | struct audio_device *adev = out->dev; |
| 547 | struct str_parms *parms; |
| 548 | char value[32]; |
| 549 | int ret; |
| 550 | unsigned int val; |
| 551 | |
| 552 | parms = str_parms_create_str(kvpairs); |
| 553 | |
| 554 | ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, |
| 555 | value, sizeof(value)); |
| 556 | pthread_mutex_lock(&adev->lock); |
| 557 | if (ret >= 0) { |
| 558 | val = atoi(value); |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 559 | if ((adev->out_device != val) && (val != 0)) { |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 560 | /* |
| 561 | * If SCO is turned on/off, we need to put audio into standby |
| 562 | * because SCO uses a different PCM. |
| 563 | */ |
| 564 | if ((val & AUDIO_DEVICE_OUT_ALL_SCO) ^ |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 565 | (adev->out_device & AUDIO_DEVICE_OUT_ALL_SCO)) { |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 566 | pthread_mutex_lock(&out->lock); |
| 567 | do_out_standby(out); |
| 568 | pthread_mutex_unlock(&out->lock); |
| 569 | } |
| 570 | |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 571 | adev->out_device = val; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 572 | select_devices(adev); |
| 573 | } |
| 574 | } |
| 575 | pthread_mutex_unlock(&adev->lock); |
| 576 | |
| 577 | str_parms_destroy(parms); |
| 578 | return ret; |
| 579 | } |
| 580 | |
| 581 | static char * out_get_parameters(const struct audio_stream *stream, const char *keys) |
| 582 | { |
| 583 | return strdup(""); |
| 584 | } |
| 585 | |
| 586 | static uint32_t out_get_latency(const struct audio_stream_out *stream) |
| 587 | { |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 588 | struct stream_out *out = (struct stream_out *)stream; |
| 589 | struct audio_device *adev = out->dev; |
| 590 | size_t period_count; |
| 591 | |
| 592 | pthread_mutex_lock(&adev->lock); |
| 593 | |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 594 | if (adev->screen_off && !adev->active_in && !(adev->out_device & AUDIO_DEVICE_OUT_ALL_SCO)) |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 595 | period_count = OUT_LONG_PERIOD_COUNT; |
| 596 | else |
| 597 | period_count = OUT_SHORT_PERIOD_COUNT; |
| 598 | |
| 599 | pthread_mutex_unlock(&adev->lock); |
| 600 | |
| 601 | return (pcm_config_out.period_size * period_count * 1000) / pcm_config_out.rate; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | static int out_set_volume(struct audio_stream_out *stream, float left, |
| 605 | float right) |
| 606 | { |
| 607 | return -ENOSYS; |
| 608 | } |
| 609 | |
| 610 | static ssize_t out_write(struct audio_stream_out *stream, const void* buffer, |
| 611 | size_t bytes) |
| 612 | { |
| 613 | int ret = 0; |
| 614 | struct stream_out *out = (struct stream_out *)stream; |
| 615 | struct audio_device *adev = out->dev; |
| 616 | size_t frame_size = audio_stream_frame_size(&out->stream.common); |
| 617 | int16_t *in_buffer = (int16_t *)buffer; |
| 618 | size_t in_frames = bytes / frame_size; |
| 619 | size_t out_frames; |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 620 | int buffer_type; |
Dave Burke | 3e1006a | 2012-06-28 16:30:37 -0700 | [diff] [blame] | 621 | int kernel_frames; |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 622 | bool sco_on; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 623 | |
| 624 | /* |
| 625 | * acquiring hw device mutex systematically is useful if a low |
| 626 | * priority thread is waiting on the output stream mutex - e.g. |
| 627 | * executing out_set_parameters() while holding the hw device |
| 628 | * mutex |
| 629 | */ |
| 630 | pthread_mutex_lock(&adev->lock); |
| 631 | pthread_mutex_lock(&out->lock); |
| 632 | if (out->standby) { |
| 633 | ret = start_output_stream(out); |
| 634 | if (ret != 0) { |
| 635 | pthread_mutex_unlock(&adev->lock); |
| 636 | goto exit; |
| 637 | } |
| 638 | out->standby = false; |
| 639 | } |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 640 | buffer_type = (adev->screen_off && !adev->active_in) ? |
| 641 | OUT_BUFFER_TYPE_LONG : OUT_BUFFER_TYPE_SHORT; |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 642 | sco_on = (adev->out_device & AUDIO_DEVICE_OUT_ALL_SCO); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 643 | pthread_mutex_unlock(&adev->lock); |
| 644 | |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 645 | /* detect changes in screen ON/OFF state and adapt buffer size |
| 646 | * if needed. Do not change buffer size when routed to SCO device. */ |
| 647 | if (!sco_on && (buffer_type != out->buffer_type)) { |
| 648 | size_t period_count; |
| 649 | |
| 650 | if (buffer_type == OUT_BUFFER_TYPE_LONG) |
| 651 | period_count = OUT_LONG_PERIOD_COUNT; |
| 652 | else |
| 653 | period_count = OUT_SHORT_PERIOD_COUNT; |
| 654 | |
| 655 | out->write_threshold = out->pcm_config->period_size * period_count; |
| 656 | /* reset current threshold if exiting standby */ |
| 657 | if (out->buffer_type == OUT_BUFFER_TYPE_UNKNOWN) |
| 658 | out->cur_write_threshold = out->write_threshold; |
| 659 | out->buffer_type = buffer_type; |
| 660 | } |
| 661 | |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 662 | /* Reduce number of channels, if necessary */ |
| 663 | if (popcount(out_get_channels(&stream->common)) > |
| 664 | (int)out->pcm_config->channels) { |
| 665 | unsigned int i; |
| 666 | |
| 667 | /* Discard right channel */ |
| 668 | for (i = 1; i < in_frames; i++) |
| 669 | in_buffer[i] = in_buffer[i * 2]; |
| 670 | |
| 671 | /* The frame size is now half */ |
| 672 | frame_size /= 2; |
| 673 | } |
| 674 | |
| 675 | /* Change sample rate, if necessary */ |
| 676 | if (out_get_sample_rate(&stream->common) != out->pcm_config->rate) { |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 677 | out_frames = out->buffer_frames; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 678 | out->resampler->resample_from_input(out->resampler, |
| 679 | in_buffer, &in_frames, |
| 680 | out->buffer, &out_frames); |
| 681 | in_buffer = out->buffer; |
| 682 | } else { |
| 683 | out_frames = in_frames; |
| 684 | } |
| 685 | |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 686 | if (!sco_on) { |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 687 | int total_sleep_time_us = 0; |
| 688 | size_t period_size = out->pcm_config->period_size; |
| 689 | |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 690 | /* do not allow more than out->cur_write_threshold frames in kernel |
| 691 | * pcm driver buffer */ |
| 692 | do { |
| 693 | struct timespec time_stamp; |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 694 | if (pcm_get_htimestamp(out->pcm, |
Dave Burke | 3e1006a | 2012-06-28 16:30:37 -0700 | [diff] [blame] | 695 | (unsigned int *)&kernel_frames, |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 696 | &time_stamp) < 0) |
| 697 | break; |
| 698 | kernel_frames = pcm_get_buffer_size(out->pcm) - kernel_frames; |
| 699 | |
Dave Burke | 3e1006a | 2012-06-28 16:30:37 -0700 | [diff] [blame] | 700 | if (kernel_frames > out->cur_write_threshold) { |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 701 | int sleep_time_us = |
| 702 | (int)(((int64_t)(kernel_frames - out->cur_write_threshold) |
| 703 | * 1000000) / out->pcm_config->rate); |
| 704 | if (sleep_time_us < MIN_WRITE_SLEEP_US) |
| 705 | break; |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 706 | total_sleep_time_us += sleep_time_us; |
| 707 | if (total_sleep_time_us > MAX_WRITE_SLEEP_US) { |
Dave Burke | 3e1006a | 2012-06-28 16:30:37 -0700 | [diff] [blame] | 708 | ALOGW("out_write() limiting sleep time %d to %d", |
| 709 | total_sleep_time_us, MAX_WRITE_SLEEP_US); |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 710 | sleep_time_us = MAX_WRITE_SLEEP_US - |
| 711 | (total_sleep_time_us - sleep_time_us); |
| 712 | } |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 713 | usleep(sleep_time_us); |
| 714 | } |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 715 | |
Dave Burke | 3e1006a | 2012-06-28 16:30:37 -0700 | [diff] [blame] | 716 | } while ((kernel_frames > out->cur_write_threshold) && |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 717 | (total_sleep_time_us <= MAX_WRITE_SLEEP_US)); |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 718 | |
| 719 | /* do not allow abrupt changes on buffer size. Increasing/decreasing |
| 720 | * the threshold by steps of 1/4th of the buffer size keeps the write |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 721 | * time within a reasonable range during transitions. |
| 722 | * Also reset current threshold just above current filling status when |
| 723 | * kernel buffer is really depleted to allow for smooth catching up with |
| 724 | * target threshold. |
| 725 | */ |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 726 | if (out->cur_write_threshold > out->write_threshold) { |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 727 | out->cur_write_threshold -= period_size / 4; |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 728 | if (out->cur_write_threshold < out->write_threshold) { |
| 729 | out->cur_write_threshold = out->write_threshold; |
| 730 | } |
| 731 | } else if (out->cur_write_threshold < out->write_threshold) { |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 732 | out->cur_write_threshold += period_size / 4; |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 733 | if (out->cur_write_threshold > out->write_threshold) { |
| 734 | out->cur_write_threshold = out->write_threshold; |
| 735 | } |
Dave Burke | 3e1006a | 2012-06-28 16:30:37 -0700 | [diff] [blame] | 736 | } else if ((kernel_frames < out->write_threshold) && |
| 737 | ((out->write_threshold - kernel_frames) > |
Eric Laurent | 146ffa1 | 2012-06-11 17:00:10 -0700 | [diff] [blame] | 738 | (int)(period_size * OUT_SHORT_PERIOD_COUNT))) { |
| 739 | out->cur_write_threshold = (kernel_frames / period_size + 1) * period_size; |
| 740 | out->cur_write_threshold += period_size / 4; |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 741 | } |
| 742 | } |
| 743 | |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 744 | ret = pcm_write(out->pcm, in_buffer, out_frames * frame_size); |
| 745 | if (ret == -EPIPE) { |
| 746 | /* In case of underrun, don't sleep since we want to catch up asap */ |
| 747 | pthread_mutex_unlock(&out->lock); |
| 748 | return ret; |
| 749 | } |
| 750 | |
| 751 | exit: |
| 752 | pthread_mutex_unlock(&out->lock); |
| 753 | |
| 754 | if (ret != 0) { |
| 755 | usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) / |
| 756 | out_get_sample_rate(&stream->common)); |
| 757 | } |
| 758 | |
| 759 | return bytes; |
| 760 | } |
| 761 | |
| 762 | static int out_get_render_position(const struct audio_stream_out *stream, |
| 763 | uint32_t *dsp_frames) |
| 764 | { |
| 765 | return -EINVAL; |
| 766 | } |
| 767 | |
| 768 | static int out_add_audio_effect(const struct audio_stream *stream, effect_handle_t effect) |
| 769 | { |
| 770 | return 0; |
| 771 | } |
| 772 | |
| 773 | static int out_remove_audio_effect(const struct audio_stream *stream, effect_handle_t effect) |
| 774 | { |
| 775 | return 0; |
| 776 | } |
| 777 | |
| 778 | static int out_get_next_write_timestamp(const struct audio_stream_out *stream, |
| 779 | int64_t *timestamp) |
| 780 | { |
| 781 | return -EINVAL; |
| 782 | } |
| 783 | |
| 784 | /** audio_stream_in implementation **/ |
| 785 | static uint32_t in_get_sample_rate(const struct audio_stream *stream) |
| 786 | { |
| 787 | struct stream_in *in = (struct stream_in *)stream; |
| 788 | |
| 789 | return in->requested_rate; |
| 790 | } |
| 791 | |
| 792 | static int in_set_sample_rate(struct audio_stream *stream, uint32_t rate) |
| 793 | { |
| 794 | return 0; |
| 795 | } |
| 796 | |
| 797 | static size_t in_get_buffer_size(const struct audio_stream *stream) |
| 798 | { |
| 799 | struct stream_in *in = (struct stream_in *)stream; |
| 800 | size_t size; |
| 801 | |
| 802 | /* |
| 803 | * take resampling into account and return the closest majoring |
| 804 | * multiple of 16 frames, as audioflinger expects audio buffers to |
| 805 | * be a multiple of 16 frames |
| 806 | */ |
| 807 | size = (in->pcm_config->period_size * in_get_sample_rate(stream)) / |
| 808 | in->pcm_config->rate; |
| 809 | size = ((size + 15) / 16) * 16; |
| 810 | |
| 811 | return size * audio_stream_frame_size((struct audio_stream *)stream); |
| 812 | } |
| 813 | |
| 814 | static uint32_t in_get_channels(const struct audio_stream *stream) |
| 815 | { |
| 816 | return AUDIO_CHANNEL_IN_MONO; |
| 817 | } |
| 818 | |
| 819 | static audio_format_t in_get_format(const struct audio_stream *stream) |
| 820 | { |
| 821 | return AUDIO_FORMAT_PCM_16_BIT; |
| 822 | } |
| 823 | |
| 824 | static int in_set_format(struct audio_stream *stream, audio_format_t format) |
| 825 | { |
| 826 | return -ENOSYS; |
| 827 | } |
| 828 | |
| 829 | static int in_standby(struct audio_stream *stream) |
| 830 | { |
| 831 | struct stream_in *in = (struct stream_in *)stream; |
| 832 | |
| 833 | pthread_mutex_lock(&in->dev->lock); |
| 834 | pthread_mutex_lock(&in->lock); |
| 835 | do_in_standby(in); |
| 836 | pthread_mutex_unlock(&in->lock); |
| 837 | pthread_mutex_unlock(&in->dev->lock); |
| 838 | |
| 839 | return 0; |
| 840 | } |
| 841 | |
| 842 | static int in_dump(const struct audio_stream *stream, int fd) |
| 843 | { |
| 844 | return 0; |
| 845 | } |
| 846 | |
| 847 | static int in_set_parameters(struct audio_stream *stream, const char *kvpairs) |
| 848 | { |
| 849 | struct stream_in *in = (struct stream_in *)stream; |
| 850 | struct audio_device *adev = in->dev; |
| 851 | struct str_parms *parms; |
| 852 | char value[32]; |
| 853 | int ret; |
| 854 | unsigned int val; |
| 855 | |
| 856 | parms = str_parms_create_str(kvpairs); |
| 857 | |
| 858 | ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, |
| 859 | value, sizeof(value)); |
| 860 | pthread_mutex_lock(&adev->lock); |
| 861 | if (ret >= 0) { |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 862 | val = atoi(value) & ~AUDIO_DEVICE_BIT_IN; |
| 863 | if ((adev->in_device != val) && (val != 0)) { |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 864 | /* |
| 865 | * If SCO is turned on/off, we need to put audio into standby |
| 866 | * because SCO uses a different PCM. |
| 867 | */ |
| 868 | if ((val & AUDIO_DEVICE_IN_ALL_SCO) ^ |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 869 | (adev->in_device & AUDIO_DEVICE_IN_ALL_SCO)) { |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 870 | pthread_mutex_lock(&in->lock); |
| 871 | do_in_standby(in); |
| 872 | pthread_mutex_unlock(&in->lock); |
| 873 | } |
| 874 | |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 875 | adev->in_device = val; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 876 | select_devices(adev); |
| 877 | } |
| 878 | } |
| 879 | pthread_mutex_unlock(&adev->lock); |
| 880 | |
| 881 | str_parms_destroy(parms); |
| 882 | return ret; |
| 883 | } |
| 884 | |
| 885 | static char * in_get_parameters(const struct audio_stream *stream, |
| 886 | const char *keys) |
| 887 | { |
| 888 | return strdup(""); |
| 889 | } |
| 890 | |
| 891 | static int in_set_gain(struct audio_stream_in *stream, float gain) |
| 892 | { |
| 893 | return 0; |
| 894 | } |
| 895 | |
| 896 | static ssize_t in_read(struct audio_stream_in *stream, void* buffer, |
| 897 | size_t bytes) |
| 898 | { |
| 899 | int ret = 0; |
| 900 | struct stream_in *in = (struct stream_in *)stream; |
| 901 | struct audio_device *adev = in->dev; |
| 902 | size_t frames_rq = bytes / audio_stream_frame_size(&stream->common); |
| 903 | |
| 904 | /* |
| 905 | * acquiring hw device mutex systematically is useful if a low |
| 906 | * priority thread is waiting on the input stream mutex - e.g. |
| 907 | * executing in_set_parameters() while holding the hw device |
| 908 | * mutex |
| 909 | */ |
| 910 | pthread_mutex_lock(&adev->lock); |
| 911 | pthread_mutex_lock(&in->lock); |
| 912 | if (in->standby) { |
| 913 | ret = start_input_stream(in); |
| 914 | if (ret == 0) |
| 915 | in->standby = 0; |
| 916 | } |
| 917 | pthread_mutex_unlock(&adev->lock); |
| 918 | |
| 919 | if (ret < 0) |
| 920 | goto exit; |
| 921 | |
| 922 | /*if (in->num_preprocessors != 0) { |
| 923 | ret = process_frames(in, buffer, frames_rq); |
| 924 | } else */if (in->resampler != NULL) { |
| 925 | ret = read_frames(in, buffer, frames_rq); |
| 926 | } else if (in->pcm_config->channels == 2) { |
| 927 | /* |
| 928 | * If the PCM is stereo, capture twice as many frames and |
| 929 | * discard the right channel. |
| 930 | */ |
| 931 | unsigned int i; |
| 932 | int16_t *in_buffer = (int16_t *)buffer; |
| 933 | |
| 934 | ret = pcm_read(in->pcm, in->buffer, bytes * 2); |
| 935 | |
| 936 | /* Discard right channel */ |
| 937 | for (i = 0; i < frames_rq; i++) |
| 938 | in_buffer[i] = in->buffer[i * 2]; |
| 939 | } else { |
| 940 | ret = pcm_read(in->pcm, buffer, bytes); |
| 941 | } |
| 942 | |
| 943 | if (ret > 0) |
| 944 | ret = 0; |
| 945 | |
| 946 | /* |
| 947 | * Instead of writing zeroes here, we could trust the hardware |
| 948 | * to always provide zeroes when muted. |
| 949 | */ |
| 950 | if (ret == 0 && adev->mic_mute) |
| 951 | memset(buffer, 0, bytes); |
| 952 | |
| 953 | exit: |
| 954 | if (ret < 0) |
| 955 | usleep(bytes * 1000000 / audio_stream_frame_size(&stream->common) / |
| 956 | in_get_sample_rate(&stream->common)); |
| 957 | |
| 958 | pthread_mutex_unlock(&in->lock); |
| 959 | return bytes; |
| 960 | } |
| 961 | |
| 962 | static uint32_t in_get_input_frames_lost(struct audio_stream_in *stream) |
| 963 | { |
| 964 | return 0; |
| 965 | } |
| 966 | |
| 967 | static int in_add_audio_effect(const struct audio_stream *stream, |
| 968 | effect_handle_t effect) |
| 969 | { |
| 970 | return 0; |
| 971 | } |
| 972 | |
| 973 | static int in_remove_audio_effect(const struct audio_stream *stream, |
| 974 | effect_handle_t effect) |
| 975 | { |
| 976 | return 0; |
| 977 | } |
| 978 | |
| 979 | |
| 980 | static int adev_open_output_stream(struct audio_hw_device *dev, |
| 981 | audio_io_handle_t handle, |
| 982 | audio_devices_t devices, |
| 983 | audio_output_flags_t flags, |
| 984 | struct audio_config *config, |
| 985 | struct audio_stream_out **stream_out) |
| 986 | { |
| 987 | struct audio_device *adev = (struct audio_device *)dev; |
| 988 | struct stream_out *out; |
| 989 | int ret; |
| 990 | |
| 991 | out = (struct stream_out *)calloc(1, sizeof(struct stream_out)); |
| 992 | if (!out) |
| 993 | return -ENOMEM; |
| 994 | |
| 995 | out->stream.common.get_sample_rate = out_get_sample_rate; |
| 996 | out->stream.common.set_sample_rate = out_set_sample_rate; |
| 997 | out->stream.common.get_buffer_size = out_get_buffer_size; |
| 998 | out->stream.common.get_channels = out_get_channels; |
| 999 | out->stream.common.get_format = out_get_format; |
| 1000 | out->stream.common.set_format = out_set_format; |
| 1001 | out->stream.common.standby = out_standby; |
| 1002 | out->stream.common.dump = out_dump; |
| 1003 | out->stream.common.set_parameters = out_set_parameters; |
| 1004 | out->stream.common.get_parameters = out_get_parameters; |
| 1005 | out->stream.common.add_audio_effect = out_add_audio_effect; |
| 1006 | out->stream.common.remove_audio_effect = out_remove_audio_effect; |
| 1007 | out->stream.get_latency = out_get_latency; |
| 1008 | out->stream.set_volume = out_set_volume; |
| 1009 | out->stream.write = out_write; |
| 1010 | out->stream.get_render_position = out_get_render_position; |
| 1011 | out->stream.get_next_write_timestamp = out_get_next_write_timestamp; |
| 1012 | |
| 1013 | out->dev = adev; |
| 1014 | |
| 1015 | config->format = out_get_format(&out->stream.common); |
| 1016 | config->channel_mask = out_get_channels(&out->stream.common); |
| 1017 | config->sample_rate = out_get_sample_rate(&out->stream.common); |
| 1018 | |
| 1019 | out->standby = true; |
| 1020 | |
| 1021 | *stream_out = &out->stream; |
| 1022 | return 0; |
| 1023 | |
| 1024 | err_open: |
| 1025 | free(out); |
| 1026 | *stream_out = NULL; |
| 1027 | return ret; |
| 1028 | } |
| 1029 | |
| 1030 | static void adev_close_output_stream(struct audio_hw_device *dev, |
| 1031 | struct audio_stream_out *stream) |
| 1032 | { |
| 1033 | out_standby(&stream->common); |
| 1034 | free(stream); |
| 1035 | } |
| 1036 | |
| 1037 | static int adev_set_parameters(struct audio_hw_device *dev, const char *kvpairs) |
| 1038 | { |
| 1039 | struct audio_device *adev = (struct audio_device *)dev; |
| 1040 | struct str_parms *parms; |
| 1041 | char *str; |
| 1042 | char value[32]; |
| 1043 | int ret; |
| 1044 | |
| 1045 | parms = str_parms_create_str(kvpairs); |
| 1046 | ret = str_parms_get_str(parms, "orientation", value, sizeof(value)); |
| 1047 | if (ret >= 0) { |
| 1048 | int orientation; |
| 1049 | |
| 1050 | if (strcmp(value, "landscape") == 0) |
| 1051 | orientation = ORIENTATION_LANDSCAPE; |
| 1052 | else if (strcmp(value, "portrait") == 0) |
| 1053 | orientation = ORIENTATION_PORTRAIT; |
| 1054 | else if (strcmp(value, "square") == 0) |
| 1055 | orientation = ORIENTATION_SQUARE; |
| 1056 | else |
| 1057 | orientation = ORIENTATION_UNDEFINED; |
| 1058 | |
| 1059 | pthread_mutex_lock(&adev->lock); |
| 1060 | if (orientation != adev->orientation) { |
| 1061 | adev->orientation = orientation; |
| 1062 | /* |
| 1063 | * Orientation changes can occur with the input device |
| 1064 | * closed so we must call select_devices() here to set |
| 1065 | * up the mixer. This is because select_devices() will |
| 1066 | * not be called when the input device is opened if no |
| 1067 | * other input parameter is changed. |
| 1068 | */ |
| 1069 | select_devices(adev); |
| 1070 | } |
| 1071 | pthread_mutex_unlock(&adev->lock); |
| 1072 | } |
| 1073 | |
Eric Laurent | fbb4e4b | 2012-06-05 18:16:22 -0700 | [diff] [blame] | 1074 | ret = str_parms_get_str(parms, "screen_state", value, sizeof(value)); |
| 1075 | if (ret >= 0) { |
| 1076 | if (strcmp(value, AUDIO_PARAMETER_VALUE_ON) == 0) |
| 1077 | adev->screen_off = false; |
| 1078 | else |
| 1079 | adev->screen_off = true; |
| 1080 | } |
| 1081 | |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 1082 | str_parms_destroy(parms); |
| 1083 | return ret; |
| 1084 | } |
| 1085 | |
| 1086 | static char * adev_get_parameters(const struct audio_hw_device *dev, |
| 1087 | const char *keys) |
| 1088 | { |
| 1089 | return strdup(""); |
| 1090 | } |
| 1091 | |
| 1092 | static int adev_init_check(const struct audio_hw_device *dev) |
| 1093 | { |
| 1094 | return 0; |
| 1095 | } |
| 1096 | |
| 1097 | static int adev_set_voice_volume(struct audio_hw_device *dev, float volume) |
| 1098 | { |
| 1099 | return -ENOSYS; |
| 1100 | } |
| 1101 | |
| 1102 | static int adev_set_master_volume(struct audio_hw_device *dev, float volume) |
| 1103 | { |
| 1104 | return -ENOSYS; |
| 1105 | } |
| 1106 | |
| 1107 | static int adev_set_mode(struct audio_hw_device *dev, audio_mode_t mode) |
| 1108 | { |
| 1109 | return 0; |
| 1110 | } |
| 1111 | |
| 1112 | static int adev_set_mic_mute(struct audio_hw_device *dev, bool state) |
| 1113 | { |
| 1114 | struct audio_device *adev = (struct audio_device *)dev; |
| 1115 | |
| 1116 | adev->mic_mute = state; |
| 1117 | |
| 1118 | return 0; |
| 1119 | } |
| 1120 | |
| 1121 | static int adev_get_mic_mute(const struct audio_hw_device *dev, bool *state) |
| 1122 | { |
| 1123 | struct audio_device *adev = (struct audio_device *)dev; |
| 1124 | |
| 1125 | *state = adev->mic_mute; |
| 1126 | |
| 1127 | return 0; |
| 1128 | } |
| 1129 | |
| 1130 | static size_t adev_get_input_buffer_size(const struct audio_hw_device *dev, |
| 1131 | const struct audio_config *config) |
| 1132 | { |
Eric Laurent | 994d776 | 2012-06-13 17:03:45 -0700 | [diff] [blame] | 1133 | size_t size; |
| 1134 | |
| 1135 | /* |
| 1136 | * take resampling into account and return the closest majoring |
| 1137 | * multiple of 16 frames, as audioflinger expects audio buffers to |
| 1138 | * be a multiple of 16 frames |
| 1139 | */ |
| 1140 | size = (pcm_config_in.period_size * config->sample_rate) / pcm_config_in.rate; |
| 1141 | size = ((size + 15) / 16) * 16; |
| 1142 | |
| 1143 | return (size * popcount(config->channel_mask) * |
| 1144 | audio_bytes_per_sample(config->format)); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 1145 | } |
| 1146 | |
| 1147 | static int adev_open_input_stream(struct audio_hw_device *dev, |
| 1148 | audio_io_handle_t handle, |
| 1149 | audio_devices_t devices, |
| 1150 | struct audio_config *config, |
| 1151 | struct audio_stream_in **stream_in) |
| 1152 | { |
| 1153 | struct audio_device *adev = (struct audio_device *)dev; |
| 1154 | struct stream_in *in; |
| 1155 | int ret; |
| 1156 | |
| 1157 | *stream_in = NULL; |
| 1158 | |
| 1159 | /* Respond with a request for mono if a different format is given. */ |
| 1160 | if (config->channel_mask != AUDIO_CHANNEL_IN_MONO) { |
| 1161 | config->channel_mask = AUDIO_CHANNEL_IN_MONO; |
| 1162 | return -EINVAL; |
| 1163 | } |
| 1164 | |
| 1165 | in = (struct stream_in *)calloc(1, sizeof(struct stream_in)); |
| 1166 | if (!in) |
| 1167 | return -ENOMEM; |
| 1168 | |
| 1169 | in->stream.common.get_sample_rate = in_get_sample_rate; |
| 1170 | in->stream.common.set_sample_rate = in_set_sample_rate; |
| 1171 | in->stream.common.get_buffer_size = in_get_buffer_size; |
| 1172 | in->stream.common.get_channels = in_get_channels; |
| 1173 | in->stream.common.get_format = in_get_format; |
| 1174 | in->stream.common.set_format = in_set_format; |
| 1175 | in->stream.common.standby = in_standby; |
| 1176 | in->stream.common.dump = in_dump; |
| 1177 | in->stream.common.set_parameters = in_set_parameters; |
| 1178 | in->stream.common.get_parameters = in_get_parameters; |
| 1179 | in->stream.common.add_audio_effect = in_add_audio_effect; |
| 1180 | in->stream.common.remove_audio_effect = in_remove_audio_effect; |
| 1181 | in->stream.set_gain = in_set_gain; |
| 1182 | in->stream.read = in_read; |
| 1183 | in->stream.get_input_frames_lost = in_get_input_frames_lost; |
| 1184 | |
| 1185 | in->dev = adev; |
| 1186 | in->standby = true; |
| 1187 | in->requested_rate = config->sample_rate; |
| 1188 | in->pcm_config = &pcm_config_in; /* default PCM config */ |
| 1189 | |
| 1190 | *stream_in = &in->stream; |
| 1191 | return 0; |
| 1192 | } |
| 1193 | |
| 1194 | static void adev_close_input_stream(struct audio_hw_device *dev, |
| 1195 | struct audio_stream_in *stream) |
| 1196 | { |
| 1197 | struct stream_in *in = (struct stream_in *)stream; |
| 1198 | |
| 1199 | in_standby(&stream->common); |
| 1200 | free(stream); |
| 1201 | } |
| 1202 | |
| 1203 | static int adev_dump(const audio_hw_device_t *device, int fd) |
| 1204 | { |
| 1205 | return 0; |
| 1206 | } |
| 1207 | |
| 1208 | static int adev_close(hw_device_t *device) |
| 1209 | { |
| 1210 | struct audio_device *adev = (struct audio_device *)device; |
| 1211 | |
| 1212 | audio_route_free(adev->ar); |
| 1213 | |
| 1214 | free(device); |
| 1215 | return 0; |
| 1216 | } |
| 1217 | |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 1218 | static int adev_open(const hw_module_t* module, const char* name, |
| 1219 | hw_device_t** device) |
| 1220 | { |
| 1221 | struct audio_device *adev; |
| 1222 | int ret; |
| 1223 | |
| 1224 | if (strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0) |
| 1225 | return -EINVAL; |
| 1226 | |
| 1227 | adev = calloc(1, sizeof(struct audio_device)); |
| 1228 | if (!adev) |
| 1229 | return -ENOMEM; |
| 1230 | |
| 1231 | adev->hw_device.common.tag = HARDWARE_DEVICE_TAG; |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 1232 | adev->hw_device.common.version = AUDIO_DEVICE_API_VERSION_2_0; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 1233 | adev->hw_device.common.module = (struct hw_module_t *) module; |
| 1234 | adev->hw_device.common.close = adev_close; |
| 1235 | |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 1236 | adev->hw_device.init_check = adev_init_check; |
| 1237 | adev->hw_device.set_voice_volume = adev_set_voice_volume; |
| 1238 | adev->hw_device.set_master_volume = adev_set_master_volume; |
| 1239 | adev->hw_device.set_mode = adev_set_mode; |
| 1240 | adev->hw_device.set_mic_mute = adev_set_mic_mute; |
| 1241 | adev->hw_device.get_mic_mute = adev_get_mic_mute; |
| 1242 | adev->hw_device.set_parameters = adev_set_parameters; |
| 1243 | adev->hw_device.get_parameters = adev_get_parameters; |
| 1244 | adev->hw_device.get_input_buffer_size = adev_get_input_buffer_size; |
| 1245 | adev->hw_device.open_output_stream = adev_open_output_stream; |
| 1246 | adev->hw_device.close_output_stream = adev_close_output_stream; |
| 1247 | adev->hw_device.open_input_stream = adev_open_input_stream; |
| 1248 | adev->hw_device.close_input_stream = adev_close_input_stream; |
| 1249 | adev->hw_device.dump = adev_dump; |
| 1250 | |
Simon Wilson | c622165 | 2013-01-28 17:00:41 -0800 | [diff] [blame] | 1251 | adev->ar = audio_route_init(MIXER_CARD, NULL); |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 1252 | adev->orientation = ORIENTATION_UNDEFINED; |
Eric Laurent | bd1f82a | 2012-08-28 14:07:29 -0700 | [diff] [blame] | 1253 | adev->out_device = AUDIO_DEVICE_OUT_SPEAKER; |
| 1254 | adev->in_device = AUDIO_DEVICE_IN_BUILTIN_MIC & ~AUDIO_DEVICE_BIT_IN; |
Jean-Baptiste Queru | 671476b | 2012-05-29 10:40:37 -0700 | [diff] [blame] | 1255 | |
| 1256 | *device = &adev->hw_device.common; |
| 1257 | |
| 1258 | return 0; |
| 1259 | } |
| 1260 | |
| 1261 | static struct hw_module_methods_t hal_module_methods = { |
| 1262 | .open = adev_open, |
| 1263 | }; |
| 1264 | |
| 1265 | struct audio_module HAL_MODULE_INFO_SYM = { |
| 1266 | .common = { |
| 1267 | .tag = HARDWARE_MODULE_TAG, |
| 1268 | .module_api_version = AUDIO_MODULE_API_VERSION_0_1, |
| 1269 | .hal_api_version = HARDWARE_HAL_API_VERSION, |
| 1270 | .id = AUDIO_HARDWARE_MODULE_ID, |
| 1271 | .name = "Grouper audio HW HAL", |
| 1272 | .author = "The Android Open Source Project", |
| 1273 | .methods = &hal_module_methods, |
| 1274 | }, |
| 1275 | }; |