diff options
Diffstat (limited to 'audio_hw.c')
| -rw-r--r-- | audio_hw.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/audio_hw.c b/audio_hw.c new file mode 100644 index 0000000..5e18a0b --- /dev/null +++ b/audio_hw.c @@ -0,0 +1,198 @@ +/* + * Copyright (C) 2012 Paul Kocialkowski <contact@paulk.fr> + * + * This is based on Galaxy Nexus audio.primary.tuna implementation: + * Copyright 2011, The Android Open-Source Project + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#define LOG_TAG "audio_hw" + +#include <errno.h> +#include <pthread.h> +#include <stdint.h> +#include <sys/time.h> + +#include <cutils/log.h> + +#include "audio_hw.h" + +/* + * Output + */ + +#include "audio_out.c" + +/* + * Input + */ + +#include "audio_in.c" + +/* + * Functions + */ + +static uint32_t audio_hw_get_supported_devices(const struct audio_hw_device *dev) +{ + int supported_output_devices = AUDIO_DEVICE_OUT_EARPIECE | + AUDIO_DEVICE_OUT_SPEAKER | + AUDIO_DEVICE_OUT_WIRED_HEADSET | + AUDIO_DEVICE_OUT_WIRED_HEADPHONE | + AUDIO_DEVICE_OUT_AUX_DIGITAL | + AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET | + AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET | + AUDIO_DEVICE_OUT_ALL_SCO | + AUDIO_DEVICE_OUT_DEFAULT; + + int supported_input_devices = AUDIO_DEVICE_IN_COMMUNICATION | + AUDIO_DEVICE_IN_AMBIENT | + AUDIO_DEVICE_IN_BUILTIN_MIC | + AUDIO_DEVICE_IN_WIRED_HEADSET | + AUDIO_DEVICE_IN_AUX_DIGITAL | + AUDIO_DEVICE_IN_BACK_MIC | + AUDIO_DEVICE_IN_ALL_SCO | + AUDIO_DEVICE_IN_DEFAULT; + + return supported_output_devices | supported_input_devices; +} + +static int audio_hw_init_check(const struct audio_hw_device *dev) +{ + if(dev != NULL) + return 0; + else + return -EINVAL; +} + +static int audio_hw_set_voice_volume(struct audio_hw_device *dev, float volume) +{ + return -ENOSYS; +} + +static int audio_hw_set_master_volume(struct audio_hw_device *dev, float volume) +{ + return -ENOSYS; +} + +static int audio_hw_set_mode(struct audio_hw_device *dev, int mode) +{ + return 0; +} + +static int audio_hw_set_mic_mute(struct audio_hw_device *dev, bool state) +{ + return -ENOSYS; +} + +static int audio_hw_get_mic_mute(const struct audio_hw_device *dev, bool *state) +{ + return -ENOSYS; +} + +static int audio_hw_set_parameters(struct audio_hw_device *dev, + const char *kvpairs) +{ + return -ENOSYS; +} + +static char * audio_hw_get_parameters(const struct audio_hw_device *dev, + const char *keys) +{ + return NULL; +} + +static size_t audio_hw_get_input_buffer_size(const struct audio_hw_device *dev, + uint32_t sample_rate, int format, int channel_count) +{ + return 320; +} + +static int audio_hw_dump(const audio_hw_device_t *device, int fd) +{ + return 0; +} + +/* + * Interface + */ + +int audio_hw_close(hw_device_t *device) +{ + if(device != NULL) + free(device); + + return 0; +} + +int audio_hw_open(const hw_module_t *module, const char *name, + hw_device_t **device) +{ + struct tinyalsa_audio_device *tinyalsa_audio_device; + struct audio_hw_device *dev; + + if(strcmp(name, AUDIO_HARDWARE_INTERFACE) != 0) + return -EINVAL; + + tinyalsa_audio_device = calloc(1, sizeof(struct tinyalsa_audio_device)); + if(tinyalsa_audio_device == NULL) + return -ENOMEM; + + dev = &(tinyalsa_audio_device->device); + + dev->common.tag = HARDWARE_DEVICE_TAG; + dev->common.version = 0; + dev->common.module = (struct hw_module_t *) module; + dev->common.close = audio_hw_close; + + dev->get_supported_devices = audio_hw_get_supported_devices; + dev->init_check = audio_hw_init_check; + dev->set_voice_volume = audio_hw_set_voice_volume; + dev->set_master_volume = audio_hw_set_master_volume; + dev->set_mode = audio_hw_set_mode; + dev->set_mic_mute = audio_hw_set_mic_mute; + dev->get_mic_mute = audio_hw_get_mic_mute; + dev->set_parameters = audio_hw_set_parameters; + dev->get_parameters = audio_hw_get_parameters; + dev->get_input_buffer_size = audio_hw_get_input_buffer_size; + + dev->open_output_stream = audio_hw_open_output_stream; + dev->close_output_stream = audio_hw_close_output_stream; + + dev->open_input_stream = audio_hw_open_input_stream; + dev->close_input_stream = audio_hw_close_input_stream; + + dev->dump = audio_hw_dump; + + *device = &(dev->common); + + return 0; +} + +struct hw_module_methods_t audio_hw_module_methods = { + .open = audio_hw_open, +}; + +struct audio_module HAL_MODULE_INFO_SYM = { + .common = { + .tag = HARDWARE_MODULE_TAG, + .version_major = 1, + .version_minor = 0, + .id = AUDIO_HARDWARE_MODULE_ID, + .name = "TinyALSA-Audio", + .author = "Paul Kocialkowski", + .methods = &audio_hw_module_methods, + }, +}; |