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 #define LOG_TAG "audio_hw_hfp"
18 /*#define LOG_NDEBUG 0*/
19 #define LOG_NDDEBUG 0
20
21 #include <errno.h>
22 #include <math.h>
23 #include <cutils/log.h>
24
25 #include "audio_hw.h"
26 #include "platform.h"
27 #include "platform_api.h"
28 #include <stdlib.h>
29 #include <cutils/str_parms.h>
30
31 #define AUDIO_PARAMETER_HFP_ENABLE "hfp_enable"
32 #define AUDIO_PARAMETER_HFP_SET_SAMPLING_RATE "hfp_set_sampling_rate"
33 #define AUDIO_PARAMETER_KEY_HFP_VOLUME "hfp_volume"
34
35 static int32_t start_hfp(struct audio_device *adev,
36 struct str_parms *parms);
37
38 static int32_t stop_hfp(struct audio_device *adev);
39
40 struct hfp_module {
41 struct pcm *hfp_sco_rx;
42 struct pcm *hfp_sco_tx;
43 struct pcm *hfp_pcm_rx;
44 struct pcm *hfp_pcm_tx;
45 float hfp_volume;
46 bool is_hfp_running;
47 audio_usecase_t ucid;
48 };
49
50 static struct hfp_module hfpmod = {
51 .hfp_sco_rx = NULL,
52 .hfp_sco_tx = NULL,
53 .hfp_pcm_rx = NULL,
54 .hfp_pcm_tx = NULL,
55 .hfp_volume = 0,
56 .is_hfp_running = 0,
57 .ucid = USECASE_AUDIO_HFP_SCO,
58 };
59 static struct pcm_config pcm_config_hfp = {
60 .channels = 1,
61 .rate = 8000,
62 .period_size = 240,
63 .period_count = 2,
64 .format = PCM_FORMAT_S16_LE,
65 .start_threshold = 0,
66 .stop_threshold = INT_MAX,
67 .avail_min = 0,
68 };
69
hfp_set_volume(struct audio_device * adev,float value)70 static int32_t hfp_set_volume(struct audio_device *adev, float value)
71 {
72 int32_t vol, ret = 0;
73 struct mixer_ctl *ctl;
74 #ifdef EXTERNAL_BT_SUPPORTED
75 const char *mixer_ctl_name = "PRI AUXPCM LOOPBACK Volume";
76 #else
77 const char *mixer_ctl_name = "Internal HFP RX Volume";
78 #endif
79
80 ALOGV("%s: entry", __func__);
81 ALOGD("%s: (%f)\n", __func__, value);
82
83 if (value < 0.0) {
84 ALOGW("%s: (%f) Under 0.0, assuming 0.0\n", __func__, value);
85 value = 0.0;
86 } else {
87 value = ((value > 15.000000) ? 1.0 : (value / 15));
88 ALOGW("%s: Volume brought with in range (%f)\n", __func__, value);
89 }
90 vol = lrint((value * 0x2000) + 0.5);
91 hfpmod.hfp_volume = value;
92
93 if (!hfpmod.is_hfp_running) {
94 ALOGV("%s: HFP not active, ignoring set_hfp_volume call", __func__);
95 return -EIO;
96 }
97
98 ALOGD("%s: Setting HFP volume to %d \n", __func__, vol);
99 ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name);
100 if (!ctl) {
101 ALOGE("%s: Could not get ctl for mixer cmd - %s",
102 __func__, mixer_ctl_name);
103 return -EINVAL;
104 }
105 if(mixer_ctl_set_value(ctl, 0, vol) < 0) {
106 ALOGE("%s: Couldn't set HFP Volume: [%d]", __func__, vol);
107 return -EINVAL;
108 }
109
110 ALOGV("%s: exit", __func__);
111 return ret;
112 }
113
start_hfp(struct audio_device * adev,struct str_parms * parms __unused)114 static int32_t start_hfp(struct audio_device *adev,
115 struct str_parms *parms __unused)
116 {
117 int32_t i, ret = 0;
118 struct audio_usecase *uc_info;
119 int32_t pcm_dev_rx_id, pcm_dev_tx_id, pcm_dev_asm_rx_id, pcm_dev_asm_tx_id;
120
121 ALOGD("%s: enter", __func__);
122 adev->enable_hfp = true;
123 platform_set_mic_mute(adev->platform, false);
124
125 uc_info = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase));
126 uc_info->id = hfpmod.ucid;
127 uc_info->type = PCM_HFP_CALL;
128 uc_info->stream.out = adev->primary_output;
129 uc_info->devices = adev->primary_output->devices;
130 uc_info->in_snd_device = SND_DEVICE_NONE;
131 uc_info->out_snd_device = SND_DEVICE_NONE;
132
133 list_add_tail(&adev->usecase_list, &uc_info->list);
134
135 select_devices(adev, hfpmod.ucid);
136
137 pcm_dev_rx_id = platform_get_pcm_device_id(uc_info->id, PCM_PLAYBACK);
138 pcm_dev_tx_id = platform_get_pcm_device_id(uc_info->id, PCM_CAPTURE);
139 pcm_dev_asm_rx_id = HFP_ASM_RX_TX;
140 pcm_dev_asm_tx_id = HFP_ASM_RX_TX;
141 if (pcm_dev_rx_id < 0 || pcm_dev_tx_id < 0 ||
142 pcm_dev_asm_rx_id < 0 || pcm_dev_asm_tx_id < 0 ) {
143 ALOGE("%s: Invalid PCM devices (rx: %d tx: %d asm: rx tx %d) for the usecase(%d)",
144 __func__, pcm_dev_rx_id, pcm_dev_tx_id, pcm_dev_asm_rx_id, uc_info->id);
145 ret = -EIO;
146 goto exit;
147 }
148
149 ALOGV("%s: HFP PCM devices (hfp rx tx: %d pcm rx tx: %d) for the usecase(%d)",
150 __func__, pcm_dev_rx_id, pcm_dev_tx_id, uc_info->id);
151
152 ALOGV("%s: Opening PCM playback device card_id(%d) device_id(%d)",
153 __func__, adev->snd_card, pcm_dev_rx_id);
154 hfpmod.hfp_sco_rx = pcm_open(adev->snd_card,
155 pcm_dev_asm_rx_id,
156 PCM_OUT, &pcm_config_hfp);
157 if (hfpmod.hfp_sco_rx && !pcm_is_ready(hfpmod.hfp_sco_rx)) {
158 ALOGE("%s: %s", __func__, pcm_get_error(hfpmod.hfp_sco_rx));
159 ret = -EIO;
160 goto exit;
161 }
162 ALOGD("%s: Opening PCM capture device card_id(%d) device_id(%d)",
163 __func__, adev->snd_card, pcm_dev_tx_id);
164 hfpmod.hfp_pcm_rx = pcm_open(adev->snd_card,
165 pcm_dev_rx_id,
166 PCM_OUT, &pcm_config_hfp);
167 if (hfpmod.hfp_pcm_rx && !pcm_is_ready(hfpmod.hfp_pcm_rx)) {
168 ALOGE("%s: %s", __func__, pcm_get_error(hfpmod.hfp_pcm_rx));
169 ret = -EIO;
170 goto exit;
171 }
172 hfpmod.hfp_sco_tx = pcm_open(adev->snd_card,
173 pcm_dev_asm_tx_id,
174 PCM_IN, &pcm_config_hfp);
175 if (hfpmod.hfp_sco_tx && !pcm_is_ready(hfpmod.hfp_sco_tx)) {
176 ALOGE("%s: %s", __func__, pcm_get_error(hfpmod.hfp_sco_tx));
177 ret = -EIO;
178 goto exit;
179 }
180 ALOGV("%s: Opening PCM capture device card_id(%d) device_id(%d)",
181 __func__, adev->snd_card, pcm_dev_tx_id);
182 hfpmod.hfp_pcm_tx = pcm_open(adev->snd_card,
183 pcm_dev_tx_id,
184 PCM_IN, &pcm_config_hfp);
185 if (hfpmod.hfp_pcm_tx && !pcm_is_ready(hfpmod.hfp_pcm_tx)) {
186 ALOGE("%s: %s", __func__, pcm_get_error(hfpmod.hfp_pcm_tx));
187 ret = -EIO;
188 goto exit;
189 }
190 pcm_start(hfpmod.hfp_sco_rx);
191 pcm_start(hfpmod.hfp_sco_tx);
192 pcm_start(hfpmod.hfp_pcm_rx);
193 pcm_start(hfpmod.hfp_pcm_tx);
194
195 hfpmod.is_hfp_running = true;
196 hfp_set_volume(adev, hfpmod.hfp_volume);
197
198 ALOGD("%s: exit: status(%d)", __func__, ret);
199 return 0;
200
201 exit:
202 stop_hfp(adev);
203 ALOGE("%s: Problem in HFP start: status(%d)", __func__, ret);
204 return ret;
205 }
206
stop_hfp(struct audio_device * adev)207 static int32_t stop_hfp(struct audio_device *adev)
208 {
209 int32_t i, ret = 0;
210 struct audio_usecase *uc_info;
211
212 ALOGD("%s: enter", __func__);
213 hfpmod.is_hfp_running = false;
214
215 /* 1. Close the PCM devices */
216 if (hfpmod.hfp_sco_rx) {
217 pcm_close(hfpmod.hfp_sco_rx);
218 hfpmod.hfp_sco_rx = NULL;
219 }
220 if (hfpmod.hfp_sco_tx) {
221 pcm_close(hfpmod.hfp_sco_tx);
222 hfpmod.hfp_sco_tx = NULL;
223 }
224 if (hfpmod.hfp_pcm_rx) {
225 pcm_close(hfpmod.hfp_pcm_rx);
226 hfpmod.hfp_pcm_rx = NULL;
227 }
228 if (hfpmod.hfp_pcm_tx) {
229 pcm_close(hfpmod.hfp_pcm_tx);
230 hfpmod.hfp_pcm_tx = NULL;
231 }
232
233 uc_info = get_usecase_from_list(adev, hfpmod.ucid);
234 if (uc_info == NULL) {
235 ALOGE("%s: Could not find the usecase (%d) in the list",
236 __func__, hfpmod.ucid);
237 return -EINVAL;
238 }
239
240 /* 2. Get and set stream specific mixer controls */
241 disable_audio_route(adev, uc_info);
242
243 /* 3. Disable the rx and tx devices */
244 disable_snd_device(adev, uc_info->out_snd_device);
245 disable_snd_device(adev, uc_info->in_snd_device);
246
247 /* Disable the echo reference for HFP Tx */
248 platform_set_echo_reference(adev, false, AUDIO_DEVICE_NONE);
249
250 /* Set the unmute Tx mixer control */
251 if (voice_get_mic_mute(adev)) {
252 platform_set_mic_mute(adev->platform, false);
253 ALOGD("%s: unMute HFP Tx", __func__);
254 }
255 adev->enable_hfp = false;
256
257 list_remove(&uc_info->list);
258 free(uc_info);
259
260 ALOGD("%s: exit: status(%d)", __func__, ret);
261 return ret;
262 }
263
audio_extn_hfp_is_active(struct audio_device * adev)264 bool audio_extn_hfp_is_active(struct audio_device *adev)
265 {
266 struct audio_usecase *hfp_usecase = NULL;
267 hfp_usecase = get_usecase_from_list(adev, hfpmod.ucid);
268
269 if (hfp_usecase != NULL)
270 return true;
271 else
272 return false;
273 }
274
audio_extn_hfp_get_usecase()275 audio_usecase_t audio_extn_hfp_get_usecase()
276 {
277 return hfpmod.ucid;
278 }
279
audio_extn_hfp_set_parameters(struct audio_device * adev,struct str_parms * parms)280 void audio_extn_hfp_set_parameters(struct audio_device *adev, struct str_parms *parms)
281 {
282 int ret;
283 int rate;
284 int val;
285 float vol;
286 char value[32]={0};
287
288 ret = str_parms_get_str(parms, AUDIO_PARAMETER_HFP_ENABLE, value,
289 sizeof(value));
290 if (ret >= 0) {
291 if (!strncmp(value,"true",sizeof(value)))
292 ret = start_hfp(adev,parms);
293 else
294 stop_hfp(adev);
295 }
296 memset(value, 0, sizeof(value));
297 ret = str_parms_get_str(parms,AUDIO_PARAMETER_HFP_SET_SAMPLING_RATE, value,
298 sizeof(value));
299 if (ret >= 0) {
300 rate = atoi(value);
301 if (rate == 8000){
302 hfpmod.ucid = USECASE_AUDIO_HFP_SCO;
303 pcm_config_hfp.rate = rate;
304 } else if (rate == 16000){
305 hfpmod.ucid = USECASE_AUDIO_HFP_SCO_WB;
306 pcm_config_hfp.rate = rate;
307 } else
308 ALOGE("Unsupported rate..");
309 }
310
311 if (hfpmod.is_hfp_running) {
312 memset(value, 0, sizeof(value));
313 ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING,
314 value, sizeof(value));
315 if (ret >= 0) {
316 val = atoi(value);
317 if (val > 0)
318 select_devices(adev, hfpmod.ucid);
319 }
320 }
321
322 memset(value, 0, sizeof(value));
323 ret = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_HFP_VOLUME,
324 value, sizeof(value));
325 if (ret >= 0) {
326 if (sscanf(value, "%f", &vol) != 1){
327 ALOGE("%s: error in retrieving hfp volume", __func__);
328 ret = -EIO;
329 goto exit;
330 }
331 ALOGD("%s: set_hfp_volume usecase, Vol: [%f]", __func__, vol);
332 hfp_set_volume(adev, vol);
333 }
334 exit:
335 ALOGV("%s Exit",__func__);
336 }
337