| /* |
| * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved. |
| * Not a Contribution. |
| * |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "audio_hw_fm" |
| /*#define LOG_NDEBUG 0*/ |
| #define LOG_NDDEBUG 0 |
| |
| #include <errno.h> |
| #include <math.h> |
| #include <cutils/log.h> |
| |
| #include "audio_hw.h" |
| #include "platform.h" |
| #include "platform_api.h" |
| #include <stdlib.h> |
| #include <cutils/str_parms.h> |
| |
| #ifdef FM_POWER_OPT |
| #define AUDIO_PARAMETER_KEY_HANDLE_FM "handle_fm" |
| #define AUDIO_PARAMETER_KEY_FM_VOLUME "fm_volume" |
| |
| static struct pcm_config pcm_config_fm = { |
| .channels = 2, |
| .rate = 48000, |
| .period_size = 256, |
| .period_count = 4, |
| .format = PCM_FORMAT_S16_LE, |
| .start_threshold = 0, |
| .stop_threshold = INT_MAX, |
| .avail_min = 0, |
| }; |
| |
| struct fm_module { |
| struct pcm *fm_pcm_rx; |
| struct pcm *fm_pcm_tx; |
| bool is_fm_running; |
| float fm_volume; |
| bool restart_fm; |
| int scard_state; |
| }; |
| |
| static struct fm_module fmmod = { |
| .fm_pcm_rx = NULL, |
| .fm_pcm_tx = NULL, |
| .fm_volume = 0, |
| .is_fm_running = 0, |
| .restart_fm = 0, |
| .scard_state = SND_CARD_STATE_ONLINE, |
| }; |
| |
| static int32_t fm_set_volume(struct audio_device *adev, float value) |
| { |
| int32_t vol, ret = 0; |
| struct mixer_ctl *ctl; |
| const char *mixer_ctl_name = "Internal FM RX Volume"; |
| |
| ALOGV("%s: entry", __func__); |
| ALOGD("%s: (%f)\n", __func__, value); |
| |
| if (value < 0.0) { |
| ALOGW("%s: (%f) Under 0.0, assuming 0.0\n", __func__, value); |
| value = 0.0; |
| } else if (value > 1.0) { |
| ALOGW("%s: (%f) Over 1.0, assuming 1.0\n", __func__, value); |
| value = 1.0; |
| } |
| vol = lrint((value * 0x2000) + 0.5); |
| fmmod.fm_volume = value; |
| |
| if (!fmmod.is_fm_running) { |
| ALOGV("%s: FM not active, ignoring set_fm_volume call", __func__); |
| return -EIO; |
| } |
| |
| ALOGD("%s: Setting FM volume to %d \n", __func__, vol); |
| ctl = mixer_get_ctl_by_name(adev->mixer, mixer_ctl_name); |
| if (!ctl) { |
| ALOGE("%s: Could not get ctl for mixer cmd - %s", |
| __func__, mixer_ctl_name); |
| return -EINVAL; |
| } |
| mixer_ctl_set_value(ctl, 0, vol); |
| |
| ALOGV("%s: exit", __func__); |
| return ret; |
| } |
| |
| static int32_t fm_stop(struct audio_device *adev) |
| { |
| int32_t i, ret = 0; |
| struct audio_usecase *uc_info; |
| |
| ALOGD("%s: enter", __func__); |
| fmmod.is_fm_running = false; |
| |
| /* 1. Close the PCM devices */ |
| if (fmmod.fm_pcm_rx) { |
| pcm_close(fmmod.fm_pcm_rx); |
| fmmod.fm_pcm_rx = NULL; |
| } |
| if (fmmod.fm_pcm_tx) { |
| pcm_close(fmmod.fm_pcm_tx); |
| fmmod.fm_pcm_tx = NULL; |
| } |
| |
| uc_info = get_usecase_from_list(adev, USECASE_AUDIO_PLAYBACK_FM); |
| if (uc_info == NULL) { |
| ALOGE("%s: Could not find the usecase (%d) in the list", |
| __func__, USECASE_VOICE_CALL); |
| return -EINVAL; |
| } |
| |
| /* 2. Get and set stream specific mixer controls */ |
| disable_audio_route(adev, uc_info); |
| |
| /* 3. Disable the rx and tx devices */ |
| disable_snd_device(adev, uc_info->out_snd_device); |
| disable_snd_device(adev, uc_info->in_snd_device); |
| |
| list_remove(&uc_info->list); |
| free(uc_info); |
| |
| ALOGD("%s: exit: status(%d)", __func__, ret); |
| return ret; |
| } |
| |
| static int32_t fm_start(struct audio_device *adev) |
| { |
| int32_t i, ret = 0; |
| struct audio_usecase *uc_info; |
| int32_t pcm_dev_rx_id, pcm_dev_tx_id; |
| |
| ALOGD("%s: enter", __func__); |
| |
| uc_info = (struct audio_usecase *)calloc(1, sizeof(struct audio_usecase)); |
| uc_info->id = USECASE_AUDIO_PLAYBACK_FM; |
| uc_info->type = PCM_PLAYBACK; |
| uc_info->stream.out = adev->primary_output; |
| uc_info->devices = adev->primary_output->devices; |
| uc_info->in_snd_device = SND_DEVICE_NONE; |
| uc_info->out_snd_device = SND_DEVICE_NONE; |
| |
| list_add_tail(&adev->usecase_list, &uc_info->list); |
| |
| select_devices(adev, USECASE_AUDIO_PLAYBACK_FM); |
| |
| pcm_dev_rx_id = platform_get_pcm_device_id(uc_info->id, PCM_PLAYBACK); |
| pcm_dev_tx_id = platform_get_pcm_device_id(uc_info->id, PCM_CAPTURE); |
| |
| if (pcm_dev_rx_id < 0 || pcm_dev_tx_id < 0) { |
| ALOGE("%s: Invalid PCM devices (rx: %d tx: %d) for the usecase(%d)", |
| __func__, pcm_dev_rx_id, pcm_dev_tx_id, uc_info->id); |
| ret = -EIO; |
| goto exit; |
| } |
| |
| ALOGV("%s: FM PCM devices (rx: %d tx: %d) for the usecase(%d)", |
| __func__, pcm_dev_rx_id, pcm_dev_tx_id, uc_info->id); |
| |
| ALOGV("%s: Opening PCM playback device card_id(%d) device_id(%d)", |
| __func__, adev->snd_card, pcm_dev_rx_id); |
| fmmod.fm_pcm_rx = pcm_open(adev->snd_card, |
| pcm_dev_rx_id, |
| PCM_OUT, &pcm_config_fm); |
| if (fmmod.fm_pcm_rx && !pcm_is_ready(fmmod.fm_pcm_rx)) { |
| ALOGE("%s: %s", __func__, pcm_get_error(fmmod.fm_pcm_rx)); |
| ret = -EIO; |
| goto exit; |
| } |
| |
| ALOGV("%s: Opening PCM capture device card_id(%d) device_id(%d)", |
| __func__, adev->snd_card, pcm_dev_tx_id); |
| fmmod.fm_pcm_tx = pcm_open(adev->snd_card, |
| pcm_dev_tx_id, |
| PCM_IN, &pcm_config_fm); |
| if (fmmod.fm_pcm_tx && !pcm_is_ready(fmmod.fm_pcm_tx)) { |
| ALOGE("%s: %s", __func__, pcm_get_error(fmmod.fm_pcm_tx)); |
| ret = -EIO; |
| goto exit; |
| } |
| pcm_start(fmmod.fm_pcm_rx); |
| pcm_start(fmmod.fm_pcm_tx); |
| |
| fmmod.is_fm_running = true; |
| fm_set_volume(adev, fmmod.fm_volume); |
| |
| ALOGD("%s: exit: status(%d)", __func__, ret); |
| return 0; |
| |
| exit: |
| fm_stop(adev); |
| ALOGE("%s: Problem in FM start: status(%d)", __func__, ret); |
| return ret; |
| } |
| |
| void audio_extn_fm_set_parameters(struct audio_device *adev, |
| struct str_parms *parms) |
| { |
| int ret, val; |
| char value[32]={0}; |
| float vol =0.0; |
| |
| ALOGV("%s: enter", __func__); |
| ret = str_parms_get_str(parms, "SND_CARD_STATUS", value, sizeof(value)); |
| if (ret >= 0) { |
| char *snd_card_status = value+2; |
| if (strstr(snd_card_status, "OFFLINE")) { |
| fmmod.scard_state = SND_CARD_STATE_OFFLINE; |
| } |
| else if (strstr(snd_card_status, "ONLINE")) { |
| fmmod.scard_state = SND_CARD_STATE_ONLINE; |
| } |
| } |
| if(fmmod.is_fm_running) { |
| if (fmmod.scard_state == SND_CARD_STATE_OFFLINE) { |
| ALOGD("sound card is OFFLINE, stop FM"); |
| fm_stop(adev); |
| fmmod.restart_fm = 1; |
| } |
| |
| ret = str_parms_get_str(parms, AUDIO_PARAMETER_STREAM_ROUTING, |
| value, sizeof(value)); |
| if (ret >= 0) { |
| val = atoi(value); |
| if(val > 0) |
| select_devices(adev, USECASE_AUDIO_PLAYBACK_FM); |
| } |
| } |
| if (fmmod.restart_fm && (fmmod.scard_state == SND_CARD_STATE_ONLINE)) { |
| ALOGD("sound card is ONLINE, restart FM"); |
| fmmod.restart_fm = 0; |
| fm_start(adev); |
| } |
| |
| ret = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_HANDLE_FM, |
| value, sizeof(value)); |
| if (ret >= 0) { |
| val = atoi(value); |
| ALOGD("%s: FM usecase", __func__); |
| if (val != 0) { |
| if(val & AUDIO_DEVICE_OUT_FM |
| && fmmod.is_fm_running == false) { |
| adev->primary_output->devices = val & ~AUDIO_DEVICE_OUT_FM; |
| fm_start(adev); |
| } else if (!(val & AUDIO_DEVICE_OUT_FM) |
| && fmmod.is_fm_running == true) |
| fm_stop(adev); |
| } |
| } |
| |
| memset(value, 0, sizeof(value)); |
| ret = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_FM_VOLUME, |
| value, sizeof(value)); |
| if (ret >= 0) { |
| if (sscanf(value, "%f", &vol) != 1){ |
| ALOGE("%s: error in retrieving fm volume", __func__); |
| ret = -EIO; |
| goto exit; |
| } |
| ALOGD("%s: set_fm_volume usecase", __func__); |
| fm_set_volume(adev, vol); |
| } |
| |
| exit: |
| ALOGV("%s: exit", __func__); |
| } |
| #endif /* FM_POWER_OPT end */ |