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/*
* 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"
/*
* Functions
*/
static uint32_t audio_hw_get_supported_devices(const struct audio_hw_device *dev)
{
LOGD("%s(%p)", __func__, 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)
{
LOGD("%s(%p)", __func__, dev);
if(dev != NULL)
return 0;
else
return -EINVAL;
}
static int audio_hw_set_voice_volume(struct audio_hw_device *dev, float volume)
{
LOGD("%s(%p, %f)", __func__, dev, volume);
return -ENOSYS;
}
static int audio_hw_set_master_volume(struct audio_hw_device *dev, float volume)
{
LOGD("%s(%p, %f)", __func__, dev, volume);
return -ENOSYS;
}
static int audio_hw_set_mode(struct audio_hw_device *dev, int mode)
{
LOGD("%s(%p, %d)", __func__, dev, mode);
return 0;
}
static int audio_hw_set_mic_mute(struct audio_hw_device *dev, bool state)
{
LOGD("%s(%p, %d)", __func__, dev, state);
return -ENOSYS;
}
static int audio_hw_get_mic_mute(const struct audio_hw_device *dev, bool *state)
{
LOGD("%s(%p, %p)", __func__, dev, state);
return -ENOSYS;
}
static int audio_hw_set_parameters(struct audio_hw_device *dev,
const char *kvpairs)
{
LOGD("%s(%p, %s)", __func__, dev, kvpairs);
return -ENOSYS;
}
static char *audio_hw_get_parameters(const struct audio_hw_device *dev,
const char *keys)
{
LOGD("%s(%p, %s)", __func__, dev, 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)
{
LOGD("%s(%p, %d, %d, %d)", __func__, dev, sample_rate, format, channel_count);
return 320;
}
static int audio_hw_dump(const audio_hw_device_t *device, int fd)
{
LOGD("%s(%p, %d)", __func__, device, fd);
return 0;
}
/*
* Interface
*/
int audio_hw_close(hw_device_t *device)
{
LOGD("%s(%p)", __func__, 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;
LOGD("%s(%p, %s, %p)", __func__, module, name, device);
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,
},
};
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