Commit b2bec647 authored by Martin Storsjö's avatar Martin Storsjö

Update the hardware/libhardware headers for honeycomb

Previously this used a checkout from ICS (which worked fine so far).
There are no honeycomb tags in this repo, so we can only guess and
pick commits based on where important changes were made.

This set of headers is from commit 41693fa, which is the last commit
before gralloc.h started including system/window.h (which caused issues
with the system/core headers from ICS, which provided a duplicate
definition of android_native_buffer_t.
Signed-off-by: Martin Storsjö's avatarMartin Storsjö <martin@martin.st>
parent 13b5e5b7
......@@ -15,329 +15,379 @@
*/
#ifndef ANDROID_AUDIO_HAL_INTERFACE_H
#define ANDROID_AUDIO_HAL_INTERFACE_H
#ifndef ANDROID_AUDIO_CORE_H
#define ANDROID_AUDIO_CORE_H
#include <stdbool.h>
#include <stdint.h>
#include <strings.h>
#include <sys/cdefs.h>
#include <sys/types.h>
#include <cutils/bitops.h>
#include <hardware/hardware.h>
#include <system/audio.h>
#include <hardware/audio_effect.h>
__BEGIN_DECLS
/**
* The id of this module
/* The enums were moved here mostly from
* frameworks/base/include/media/AudioSystem.h
*/
#define AUDIO_HARDWARE_MODULE_ID "audio"
/**
* Name of the audio devices to open
typedef int audio_io_handle_t;
/* Audio stream types */
typedef enum {
AUDIO_STREAM_DEFAULT = -1,
AUDIO_STREAM_VOICE_CALL = 0,
AUDIO_STREAM_SYSTEM = 1,
AUDIO_STREAM_RING = 2,
AUDIO_STREAM_MUSIC = 3,
AUDIO_STREAM_ALARM = 4,
AUDIO_STREAM_NOTIFICATION = 5,
AUDIO_STREAM_BLUETOOTH_SCO = 6,
AUDIO_STREAM_ENFORCED_AUDIBLE = 7, /* Sounds that cannot be muted by user and must be routed to speaker */
AUDIO_STREAM_DTMF = 8,
AUDIO_STREAM_TTS = 9,
AUDIO_STREAM_CNT,
AUDIO_STREAM_MAX = AUDIO_STREAM_CNT - 1,
} audio_stream_type_t;
/* Do not change these values without updating their counterparts
* in media/java/android/media/MediaRecorder.java!
*/
#define AUDIO_HARDWARE_INTERFACE "audio_hw_if"
/**************************************/
/**
* standard audio parameters that the HAL may need to handle
*/
/**
* audio device parameters
*/
/* BT SCO Noise Reduction + Echo Cancellation parameters */
#define AUDIO_PARAMETER_KEY_BT_NREC "bt_headset_nrec"
#define AUDIO_PARAMETER_VALUE_ON "on"
#define AUDIO_PARAMETER_VALUE_OFF "off"
/* TTY mode selection */
#define AUDIO_PARAMETER_KEY_TTY_MODE "tty_mode"
#define AUDIO_PARAMETER_VALUE_TTY_OFF "tty_off"
#define AUDIO_PARAMETER_VALUE_TTY_VCO "tty_vco"
#define AUDIO_PARAMETER_VALUE_TTY_HCO "tty_hco"
#define AUDIO_PARAMETER_VALUE_TTY_FULL "tty_full"
/**
* audio stream parameters
typedef enum {
AUDIO_SOURCE_DEFAULT = 0,
AUDIO_SOURCE_MIC = 1,
AUDIO_SOURCE_VOICE_UPLINK = 2,
AUDIO_SOURCE_VOICE_DOWNLINK = 3,
AUDIO_SOURCE_VOICE_CALL = 4,
AUDIO_SOURCE_CAMCORDER = 5,
AUDIO_SOURCE_VOICE_RECOGNITION = 6,
AUDIO_SOURCE_VOICE_COMMUNICATION = 7,
AUDIO_SOURCE_CNT,
AUDIO_SOURCE_MAX = AUDIO_SOURCE_CNT - 1,
} audio_source_t;
/* special audio session values
* (XXX: should this be living in the audio effects land?)
*/
#define AUDIO_PARAMETER_STREAM_ROUTING "routing"
#define AUDIO_PARAMETER_STREAM_FORMAT "format"
#define AUDIO_PARAMETER_STREAM_CHANNELS "channels"
#define AUDIO_PARAMETER_STREAM_FRAME_COUNT "frame_count"
#define AUDIO_PARAMETER_STREAM_INPUT_SOURCE "input_source"
/**************************************/
/* common audio stream parameters and operations */
struct audio_stream {
/**
* sampling rate is in Hz - eg. 44100
typedef enum {
/* session for effects attached to a particular output stream
* (value must be less than 0)
*/
uint32_t (*get_sample_rate)(const struct audio_stream *stream);
AUDIO_SESSION_OUTPUT_STAGE = -1,
/* currently unused - use set_parameters with key
* AUDIO_PARAMETER_STREAM_SAMPLING_RATE
/* session for effects applied to output mix. These effects can
* be moved by audio policy manager to another output stream
* (value must be 0)
*/
int (*set_sample_rate)(struct audio_stream *stream, uint32_t rate);
AUDIO_SESSION_OUTPUT_MIX = 0,
} audio_session_t;
/**
* size of output buffer in bytes - eg. 4800
*/
size_t (*get_buffer_size)(const struct audio_stream *stream);
/* Audio sub formats (see enum audio_format). */
/**
* the channel mask -
* e.g. AUDIO_CHANNEL_OUT_STEREO or AUDIO_CHANNEL_IN_STEREO
*/
uint32_t (*get_channels)(const struct audio_stream *stream);
/**
* audio format - eg. AUDIO_FORMAT_PCM_16_BIT
*/
int (*get_format)(const struct audio_stream *stream);
/* PCM sub formats */
typedef enum {
AUDIO_FORMAT_PCM_SUB_16_BIT = 0x1, /* DO NOT CHANGE */
AUDIO_FORMAT_PCM_SUB_8_BIT = 0x2, /* DO NOT CHANGE */
} audio_format_pcm_sub_fmt_t;
/* currently unused - use set_parameters with key
* AUDIO_PARAMETER_STREAM_FORMAT
*/
int (*set_format)(struct audio_stream *stream, int format);
/**
* Put the audio hardware input/output into standby mode.
* Returns 0 on success and <0 on failure.
*/
int (*standby)(struct audio_stream *stream);
/** dump the state of the audio input/output device */
int (*dump)(const struct audio_stream *stream, int fd);
audio_devices_t (*get_device)(const struct audio_stream *stream);
int (*set_device)(struct audio_stream *stream, audio_devices_t device);
/**
* set/get audio stream parameters. The function accepts a list of
* parameter key value pairs in the form: key1=value1;key2=value2;...
*
* Some keys are reserved for standard parameters (See AudioParameter class)
*
* If the implementation does not accept a parameter change while
* the output is active but the parameter is acceptable otherwise, it must
* return -ENOSYS.
*
* The audio flinger will put the stream in standby and then change the
* parameter value.
*/
int (*set_parameters)(struct audio_stream *stream, const char *kv_pairs);
/*
* Returns a pointer to a heap allocated string. The caller is responsible
* for freeing the memory for it.
*/
char * (*get_parameters)(const struct audio_stream *stream,
const char *keys);
int (*add_audio_effect)(const struct audio_stream *stream,
effect_handle_t effect);
int (*remove_audio_effect)(const struct audio_stream *stream,
effect_handle_t effect);
};
typedef struct audio_stream audio_stream_t;
/**
* audio_stream_out is the abstraction interface for the audio output hardware.
*
* It provides information about various properties of the audio output
* hardware driver.
/* MP3 sub format field definition : can use 11 LSBs in the same way as MP3
* frame header to specify bit rate, stereo mode, version...
*/
typedef enum {
AUDIO_FORMAT_MP3_SUB_NONE = 0x0,
} audio_format_mp3_sub_fmt_t;
struct audio_stream_out {
struct audio_stream common;
/**
* return the audio hardware driver latency in milli seconds.
*/
uint32_t (*get_latency)(const struct audio_stream_out *stream);
/**
* Use this method in situations where audio mixing is done in the
* hardware. This method serves as a direct interface with hardware,
* allowing you to directly set the volume as apposed to via the framework.
* This method might produce multiple PCM outputs or hardware accelerated
* codecs, such as MP3 or AAC.
*/
int (*set_volume)(struct audio_stream_out *stream, float left, float right);
/**
* write audio buffer to driver. Returns number of bytes written
*/
ssize_t (*write)(struct audio_stream_out *stream, const void* buffer,
size_t bytes);
/* return the number of audio frames written by the audio dsp to DAC since
* the output has exited standby
*/
int (*get_render_position)(const struct audio_stream_out *stream,
uint32_t *dsp_frames);
};
typedef struct audio_stream_out audio_stream_out_t;
struct audio_stream_in {
struct audio_stream common;
/** set the input gain for the audio driver. This method is for
* for future use */
int (*set_gain)(struct audio_stream_in *stream, float gain);
/** read audio buffer in from audio driver */
ssize_t (*read)(struct audio_stream_in *stream, void* buffer,
size_t bytes);
/**
* Return the amount of input frames lost in the audio driver since the
* last call of this function.
* Audio driver is expected to reset the value to 0 and restart counting
* upon returning the current value by this function call.
* Such loss typically occurs when the user space process is blocked
* longer than the capacity of audio driver buffers.
*
* Unit: the number of input audio frames
*/
uint32_t (*get_input_frames_lost)(struct audio_stream_in *stream);
};
typedef struct audio_stream_in audio_stream_in_t;
/**
* return the frame size (number of bytes per sample).
/* AMR NB/WB sub format field definition: specify frame block interleaving,
* bandwidth efficient or octet aligned, encoding mode for recording...
*/
typedef enum {
AUDIO_FORMAT_AMR_SUB_NONE = 0x0,
} audio_format_amr_sub_fmt_t;
/* AAC sub format field definition: specify profile or bitrate for recording... */
typedef enum {
AUDIO_FORMAT_AAC_SUB_NONE = 0x0,
} audio_format_aac_sub_fmt_t;
/* VORBIS sub format field definition: specify quality for recording... */
typedef enum {
AUDIO_FORMAT_VORBIS_SUB_NONE = 0x0,
} audio_format_vorbis_sub_fmt_t;
/* Audio format consists in a main format field (upper 8 bits) and a sub format
* field (lower 24 bits).
*
* The main format indicates the main codec type. The sub format field
* indicates options and parameters for each format. The sub format is mainly
* used for record to indicate for instance the requested bitrate or profile.
* It can also be used for certain formats to give informations not present in
* the encoded audio stream (e.g. octet alignement for AMR).
*/
static inline uint32_t audio_stream_frame_size(struct audio_stream *s)
typedef enum {
AUDIO_FORMAT_INVALID = 0xFFFFFFFFUL,
AUDIO_FORMAT_DEFAULT = 0,
AUDIO_FORMAT_PCM = 0x00000000UL, /* DO NOT CHANGE */
AUDIO_FORMAT_MP3 = 0x01000000UL,
AUDIO_FORMAT_AMR_NB = 0x02000000UL,
AUDIO_FORMAT_AMR_WB = 0x03000000UL,
AUDIO_FORMAT_AAC = 0x04000000UL,
AUDIO_FORMAT_HE_AAC_V1 = 0x05000000UL,
AUDIO_FORMAT_HE_AAC_V2 = 0x06000000UL,
AUDIO_FORMAT_VORBIS = 0x07000000UL,
AUDIO_FORMAT_MAIN_MASK = 0xFF000000UL,
AUDIO_FORMAT_SUB_MASK = 0x00FFFFFFUL,
/* Aliases */
AUDIO_FORMAT_PCM_16_BIT = (AUDIO_FORMAT_PCM |
AUDIO_FORMAT_PCM_SUB_16_BIT),
AUDIO_FORMAT_PCM_8_BIT = (AUDIO_FORMAT_PCM |
AUDIO_FORMAT_PCM_SUB_8_BIT),
} audio_format_t;
/* Channel mask definitions must be kept in sync with JAVA values in
* frameworks/base/media/java/android/media/AudioFormat.java */
typedef enum {
/* output channels */
AUDIO_CHANNEL_OUT_FRONT_LEFT = 0x4,
AUDIO_CHANNEL_OUT_FRONT_RIGHT = 0x8,
AUDIO_CHANNEL_OUT_FRONT_CENTER = 0x10,
AUDIO_CHANNEL_OUT_LOW_FREQUENCY = 0x20,
AUDIO_CHANNEL_OUT_BACK_LEFT = 0x40,
AUDIO_CHANNEL_OUT_BACK_RIGHT = 0x80,
AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER = 0x100,
AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER = 0x200,
AUDIO_CHANNEL_OUT_BACK_CENTER = 0x400,
AUDIO_CHANNEL_OUT_MONO = AUDIO_CHANNEL_OUT_FRONT_LEFT,
AUDIO_CHANNEL_OUT_STEREO = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
AUDIO_CHANNEL_OUT_FRONT_RIGHT),
AUDIO_CHANNEL_OUT_QUAD = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
AUDIO_CHANNEL_OUT_FRONT_RIGHT |
AUDIO_CHANNEL_OUT_BACK_LEFT |
AUDIO_CHANNEL_OUT_BACK_RIGHT),
AUDIO_CHANNEL_OUT_SURROUND = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
AUDIO_CHANNEL_OUT_FRONT_RIGHT |
AUDIO_CHANNEL_OUT_FRONT_CENTER |
AUDIO_CHANNEL_OUT_BACK_CENTER),
AUDIO_CHANNEL_OUT_5POINT1 = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
AUDIO_CHANNEL_OUT_FRONT_RIGHT |
AUDIO_CHANNEL_OUT_FRONT_CENTER |
AUDIO_CHANNEL_OUT_LOW_FREQUENCY |
AUDIO_CHANNEL_OUT_BACK_LEFT |
AUDIO_CHANNEL_OUT_BACK_RIGHT),
AUDIO_CHANNEL_OUT_7POINT1 = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
AUDIO_CHANNEL_OUT_FRONT_RIGHT |
AUDIO_CHANNEL_OUT_FRONT_CENTER |
AUDIO_CHANNEL_OUT_LOW_FREQUENCY |
AUDIO_CHANNEL_OUT_BACK_LEFT |
AUDIO_CHANNEL_OUT_BACK_RIGHT |
AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER |
AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER),
AUDIO_CHANNEL_OUT_ALL = (AUDIO_CHANNEL_OUT_FRONT_LEFT |
AUDIO_CHANNEL_OUT_FRONT_RIGHT |
AUDIO_CHANNEL_OUT_FRONT_CENTER |
AUDIO_CHANNEL_OUT_LOW_FREQUENCY |
AUDIO_CHANNEL_OUT_BACK_LEFT |
AUDIO_CHANNEL_OUT_BACK_RIGHT |
AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER |
AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER |
AUDIO_CHANNEL_OUT_BACK_CENTER),
/* input channels */
AUDIO_CHANNEL_IN_LEFT = 0x4,
AUDIO_CHANNEL_IN_RIGHT = 0x8,
AUDIO_CHANNEL_IN_FRONT = 0x10,
AUDIO_CHANNEL_IN_BACK = 0x20,
AUDIO_CHANNEL_IN_LEFT_PROCESSED = 0x40,
AUDIO_CHANNEL_IN_RIGHT_PROCESSED = 0x80,
AUDIO_CHANNEL_IN_FRONT_PROCESSED = 0x100,
AUDIO_CHANNEL_IN_BACK_PROCESSED = 0x200,
AUDIO_CHANNEL_IN_PRESSURE = 0x400,
AUDIO_CHANNEL_IN_X_AXIS = 0x800,
AUDIO_CHANNEL_IN_Y_AXIS = 0x1000,
AUDIO_CHANNEL_IN_Z_AXIS = 0x2000,
AUDIO_CHANNEL_IN_VOICE_UPLINK = 0x4000,
AUDIO_CHANNEL_IN_VOICE_DNLINK = 0x8000,
AUDIO_CHANNEL_IN_MONO = AUDIO_CHANNEL_IN_FRONT,
AUDIO_CHANNEL_IN_STEREO = (AUDIO_CHANNEL_IN_LEFT | AUDIO_CHANNEL_IN_RIGHT),
AUDIO_CHANNEL_IN_ALL = (AUDIO_CHANNEL_IN_LEFT |
AUDIO_CHANNEL_IN_RIGHT |
AUDIO_CHANNEL_IN_FRONT |
AUDIO_CHANNEL_IN_BACK|
AUDIO_CHANNEL_IN_LEFT_PROCESSED |
AUDIO_CHANNEL_IN_RIGHT_PROCESSED |
AUDIO_CHANNEL_IN_FRONT_PROCESSED |
AUDIO_CHANNEL_IN_BACK_PROCESSED|
AUDIO_CHANNEL_IN_PRESSURE |
AUDIO_CHANNEL_IN_X_AXIS |
AUDIO_CHANNEL_IN_Y_AXIS |
AUDIO_CHANNEL_IN_Z_AXIS |
AUDIO_CHANNEL_IN_VOICE_UPLINK |
AUDIO_CHANNEL_IN_VOICE_DNLINK),
} audio_channels_t;
typedef enum {
AUDIO_MODE_INVALID = -2,
AUDIO_MODE_CURRENT = -1,
AUDIO_MODE_NORMAL = 0,
AUDIO_MODE_RINGTONE = 1,
AUDIO_MODE_IN_CALL = 2,
AUDIO_MODE_IN_COMMUNICATION = 3,
AUDIO_MODE_CNT,
AUDIO_MODE_MAX = AUDIO_MODE_CNT - 1,
} audio_mode_t;
typedef enum {
AUDIO_IN_ACOUSTICS_AGC_ENABLE = 0x0001,
AUDIO_IN_ACOUSTICS_AGC_DISABLE = 0,
AUDIO_IN_ACOUSTICS_NS_ENABLE = 0x0002,
AUDIO_IN_ACOUSTICS_NS_DISABLE = 0,
AUDIO_IN_ACOUSTICS_TX_IIR_ENABLE = 0x0004,
AUDIO_IN_ACOUSTICS_TX_DISABLE = 0,
} audio_in_acoustics_t;
typedef enum {
/* output devices */
AUDIO_DEVICE_OUT_EARPIECE = 0x1,
AUDIO_DEVICE_OUT_SPEAKER = 0x2,
AUDIO_DEVICE_OUT_WIRED_HEADSET = 0x4,
AUDIO_DEVICE_OUT_WIRED_HEADPHONE = 0x8,
AUDIO_DEVICE_OUT_BLUETOOTH_SCO = 0x10,
AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET = 0x20,
AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT = 0x40,
AUDIO_DEVICE_OUT_BLUETOOTH_A2DP = 0x80,
AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES = 0x100,
AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER = 0x200,
AUDIO_DEVICE_OUT_AUX_DIGITAL = 0x400,
AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET = 0x800,
AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET = 0x1000,
AUDIO_DEVICE_OUT_DEFAULT = 0x8000,
AUDIO_DEVICE_OUT_ALL = (AUDIO_DEVICE_OUT_EARPIECE |
AUDIO_DEVICE_OUT_SPEAKER |
AUDIO_DEVICE_OUT_WIRED_HEADSET |
AUDIO_DEVICE_OUT_WIRED_HEADPHONE |
AUDIO_DEVICE_OUT_BLUETOOTH_SCO |
AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET |
AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT |
AUDIO_DEVICE_OUT_BLUETOOTH_A2DP |
AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER |
AUDIO_DEVICE_OUT_AUX_DIGITAL |
AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET |
AUDIO_DEVICE_OUT_DGTL_DOCK_HEADSET |
AUDIO_DEVICE_OUT_DEFAULT),
AUDIO_DEVICE_OUT_ALL_A2DP = (AUDIO_DEVICE_OUT_BLUETOOTH_A2DP |
AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
AUDIO_DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER),
AUDIO_DEVICE_OUT_ALL_SCO = (AUDIO_DEVICE_OUT_BLUETOOTH_SCO |
AUDIO_DEVICE_OUT_BLUETOOTH_SCO_HEADSET |
AUDIO_DEVICE_OUT_BLUETOOTH_SCO_CARKIT),
/* input devices */
AUDIO_DEVICE_IN_COMMUNICATION = 0x10000,
AUDIO_DEVICE_IN_AMBIENT = 0x20000,
AUDIO_DEVICE_IN_BUILTIN_MIC = 0x40000,
AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET = 0x80000,
AUDIO_DEVICE_IN_WIRED_HEADSET = 0x100000,
AUDIO_DEVICE_IN_AUX_DIGITAL = 0x200000,
AUDIO_DEVICE_IN_VOICE_CALL = 0x400000,
AUDIO_DEVICE_IN_BACK_MIC = 0x800000,
AUDIO_DEVICE_IN_DEFAULT = 0x80000000,
AUDIO_DEVICE_IN_ALL = (AUDIO_DEVICE_IN_COMMUNICATION |
AUDIO_DEVICE_IN_AMBIENT |
AUDIO_DEVICE_IN_BUILTIN_MIC |
AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET |
AUDIO_DEVICE_IN_WIRED_HEADSET |
AUDIO_DEVICE_IN_AUX_DIGITAL |
AUDIO_DEVICE_IN_VOICE_CALL |
AUDIO_DEVICE_IN_BACK_MIC |
AUDIO_DEVICE_IN_DEFAULT),
AUDIO_DEVICE_IN_ALL_SCO = AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET,
} audio_devices_t;
static inline bool audio_is_output_device(audio_devices_t device)
{
int chan_samp_sz;
switch (s->get_format(s)) {
case AUDIO_FORMAT_PCM_16_BIT:
chan_samp_sz = sizeof(int16_t);
break;
case AUDIO_FORMAT_PCM_8_BIT:
default:
chan_samp_sz = sizeof(int8_t);
break;
}
return popcount(s->get_channels(s)) * chan_samp_sz;
if ((popcount(device) == 1) && ((device & ~AUDIO_DEVICE_OUT_ALL) == 0))
return true;
else
return false;
}
static inline bool audio_is_input_device(audio_devices_t device)
{
if ((popcount(device) == 1) && ((device & ~AUDIO_DEVICE_IN_ALL) == 0))
return true;
else
return false;
}
/**********************************************************************/
/**
* Every hardware module must have a data structure named HAL_MODULE_INFO_SYM
* and the fields of this data structure must begin with hw_module_t
* followed by module specific information.
*/
struct audio_module {
struct hw_module_t common;
};
struct audio_hw_device {
struct hw_device_t common;
/**
* used by audio flinger to enumerate what devices are supported by
* each audio_hw_device implementation.
*
* Return value is a bitmask of 1 or more values of audio_devices_t
*/
uint32_t (*get_supported_devices)(const struct audio_hw_device *dev);
/**
* check to see if the audio hardware interface has been initialized.
* returns 0 on success, -ENODEV on failure.
*/
int (*init_check)(const struct audio_hw_device *dev);
/** set the audio volume of a voice call. Range is between 0.0 and 1.0 */
int (*set_voice_volume)(struct audio_hw_device *dev, float volume);
/**
* set the audio volume for all audio activities other than voice call.
* Range between 0.0 and 1.0. If any value other than 0 is returned,
* the software mixer will emulate this capability.
*/
int (*set_master_volume)(struct audio_hw_device *dev, float volume);
/**
* setMode is called when the audio mode changes. AUDIO_MODE_NORMAL mode
* is for standard audio playback, AUDIO_MODE_RINGTONE when a ringtone is
* playing, and AUDIO_MODE_IN_CALL when a call is in progress.
*/
int (*set_mode)(struct audio_hw_device *dev, int mode);
static inline bool audio_is_a2dp_device(audio_devices_t device)
{
if ((popcount(device) == 1) && (device & AUDIO_DEVICE_OUT_ALL_A2DP))
return true;
else
return false;
}
/* mic mute */
int (*set_mic_mute)(struct audio_hw_device *dev, bool state);
int (*get_mic_mute)(const struct audio_hw_device *dev, bool *state);
static inline bool audio_is_bluetooth_sco_device(audio_devices_t device)
{
if ((popcount(device) == 1) && (device & (AUDIO_DEVICE_OUT_ALL_SCO |
AUDIO_DEVICE_IN_BLUETOOTH_SCO_HEADSET)))
return true;
else
return false;
}
/* set/get global audio parameters */
int (*set_parameters)(struct audio_hw_device *dev, const char *kv_pairs);
static inline bool audio_is_input_channel(uint32_t channel)
{
if ((channel & ~AUDIO_CHANNEL_IN_ALL) == 0)
return true;
else
return false;
}
/*
* Returns a pointer to a heap allocated string. The caller is responsible
* for freeing the memory for it.
*/
char * (*get_parameters)(const struct audio_hw_device *dev,
const char *keys);
static inline bool audio_is_output_channel(uint32_t channel)
{
if ((channel & ~AUDIO_CHANNEL_OUT_ALL) == 0)
return true;
else
return false;