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144 lines
4.5 KiB
144 lines
4.5 KiB
/*
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* Copyright (C) 2015, The CyanogenMod Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef CM_AUDIO_AMPLIFIER_INTERFACE_H
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#define CM_AUDIO_AMPLIFIER_INTERFACE_H
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#include <stdint.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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#include <hardware/audio.h>
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#include <hardware/hardware.h>
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#include <system/audio.h>
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__BEGIN_DECLS
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#define AMPLIFIER_HARDWARE_MODULE_ID "audio_amplifier"
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#define AMPLIFIER_HARDWARE_INTERFACE "audio_amplifier_hw_if"
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#define AMPLIFIER_MODULE_API_VERSION_0_1 HARDWARE_MODULE_API_VERSION(0, 1)
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#define AMPLIFIER_DEVICE_API_VERSION_1_0 HARDWARE_DEVICE_API_VERSION(1, 0)
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#define AMPLIFIER_DEVICE_API_VERSION_2_0 HARDWARE_DEVICE_API_VERSION(2, 0)
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#define AMPLIFIER_DEVICE_API_VERSION_CURRENT AMPLIFIER_DEVICE_API_VERSION_2_0
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struct str_parms;
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typedef struct amplifier_device {
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/**
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* Common methods of the amplifier device. This *must* be the first member
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* of amplifier_device as users of this structure will cast a hw_device_t
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* to amplifier_device pointer in contexts where it's known
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* the hw_device_t references a amplifier_device.
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*/
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struct hw_device_t common;
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/**
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* Notify amplifier device of current input devices
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*
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* This function should handle only input devices.
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*/
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int (*set_input_devices)(struct amplifier_device *device, uint32_t devices);
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/**
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* Notify amplifier device of current output devices
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*
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* This function should handle only output devices.
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*/
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int (*set_output_devices)(struct amplifier_device *device, uint32_t devices);
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/**
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* Notify amplifier device of output device enable/disable
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*
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* This function should handle only output devices.
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*/
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int (*enable_output_devices)(struct amplifier_device *device,
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uint32_t devices, bool enable);
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/**
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* Notify amplifier device of input device enable/disable
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*
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* This function should handle only input devices.
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*/
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int (*enable_input_devices)(struct amplifier_device *device,
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uint32_t devices, bool enable);
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/**
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* Notify amplifier device about current audio mode
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*/
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int (*set_mode)(struct amplifier_device *device, audio_mode_t mode);
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/**
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* Notify amplifier device that an output stream has started
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*/
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int (*output_stream_start)(struct amplifier_device *device,
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struct audio_stream_out *stream, bool offload);
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/**
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* Notify amplifier device that an input stream has started
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*/
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int (*input_stream_start)(struct amplifier_device *device,
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struct audio_stream_in *stream);
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/**
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* Notify amplifier device that an output stream has stopped
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*/
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int (*output_stream_standby)(struct amplifier_device *device,
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struct audio_stream_out *stream);
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/**
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* Notify amplifier device that an input stream has stopped
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*/
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int (*input_stream_standby)(struct amplifier_device *device,
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struct audio_stream_in *stream);
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/**
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* set/get output audio device parameters.
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*/
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int (*set_parameters)(struct amplifier_device *device,
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struct str_parms *parms);
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} amplifier_device_t;
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typedef struct amplifier_module {
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/**
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* Common methods of the amplifier module. This *must* be the first member
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* of amplifier_module as users of this structure will cast a hw_module_t
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* to amplifier_module pointer in contexts where it's known
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* the hw_module_t references a amplifier_module.
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*/
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struct hw_module_t common;
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} amplifier_module_t;
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/** convenience API for opening and closing a supported device */
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static inline int amplifier_device_open(const struct hw_module_t *module,
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struct amplifier_device **device)
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{
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return module->methods->open(module, AMPLIFIER_HARDWARE_INTERFACE,
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(struct hw_device_t **) device);
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}
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static inline int amplifier_device_close(struct amplifier_device *device)
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{
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return device->common.close(&device->common);
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}
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__END_DECLS
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#endif // CM_AUDIO_AMPLIFIER_INTERFACE_H
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