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Bug 737173, part 1: Import the Gingerbread/Ice Cream Sandwich-compatible audio client code. r=cjones (npotb)

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Michael Wu 2012-03-25 02:11:05 -07:00
parent 31dc786f73
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514
media/libsydneyaudio/src/gonk/AudioSystem.h Normal file
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/*
* Copyright (C) 2008 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.
*/
#ifndef ANDROID_AUDIOSYSTEM_H_
#define ANDROID_AUDIOSYSTEM_H_
#include <utils/RefBase.h>
#include <utils/threads.h>
#include "IAudioFlinger.h"
namespace android {
typedef void (*audio_error_callback)(status_t err);
typedef int audio_io_handle_t;
class IAudioPolicyService;
class String8;
class AudioSystem
{
public:
enum stream_type {
DEFAULT =-1,
VOICE_CALL = 0,
SYSTEM = 1,
RING = 2,
MUSIC = 3,
ALARM = 4,
NOTIFICATION = 5,
BLUETOOTH_SCO = 6,
ENFORCED_AUDIBLE = 7, // Sounds that cannot be muted by user and must be routed to speaker
DTMF = 8,
TTS = 9,
NUM_STREAM_TYPES
};
// Audio sub formats (see AudioSystem::audio_format).
enum pcm_sub_format {
PCM_SUB_16_BIT = 0x1, // must be 1 for backward compatibility
PCM_SUB_8_BIT = 0x2, // must be 2 for backward compatibility
};
// MP3 sub format field definition : can use 11 LSBs in the same way as MP3 frame header to specify
// bit rate, stereo mode, version...
enum mp3_sub_format {
//TODO
};
// AMR NB/WB sub format field definition: specify frame block interleaving, bandwidth efficient or octet aligned,
// encoding mode for recording...
enum amr_sub_format {
//TODO
};
// AAC sub format field definition: specify profile or bitrate for recording...
enum aac_sub_format {
//TODO
};
// VORBIS sub format field definition: specify quality for recording...
enum vorbis_sub_format {
//TODO
};
// 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).
enum audio_format {
INVALID_FORMAT = -1,
FORMAT_DEFAULT = 0,
PCM = 0x00000000, // must be 0 for backward compatibility
MP3 = 0x01000000,
AMR_NB = 0x02000000,
AMR_WB = 0x03000000,
AAC = 0x04000000,
HE_AAC_V1 = 0x05000000,
HE_AAC_V2 = 0x06000000,
VORBIS = 0x07000000,
EVRC = 0x08000000,
QCELP = 0x09000000,
VOIP_PCM_INPUT = 0x0A000000,
MAIN_FORMAT_MASK = 0xFF000000,
SUB_FORMAT_MASK = 0x00FFFFFF,
// Aliases
PCM_16_BIT = (PCM|PCM_SUB_16_BIT),
PCM_8_BIT = (PCM|PCM_SUB_8_BIT)
};
// Channel mask definitions must be kept in sync with JAVA values in /media/java/android/media/AudioFormat.java
enum audio_channels {
// output channels
CHANNEL_OUT_FRONT_LEFT = 0x4,
CHANNEL_OUT_FRONT_RIGHT = 0x8,
CHANNEL_OUT_FRONT_CENTER = 0x10,
CHANNEL_OUT_LOW_FREQUENCY = 0x20,
CHANNEL_OUT_BACK_LEFT = 0x40,
CHANNEL_OUT_BACK_RIGHT = 0x80,
CHANNEL_OUT_FRONT_LEFT_OF_CENTER = 0x100,
CHANNEL_OUT_FRONT_RIGHT_OF_CENTER = 0x200,
CHANNEL_OUT_BACK_CENTER = 0x400,
CHANNEL_OUT_MONO = CHANNEL_OUT_FRONT_LEFT,
CHANNEL_OUT_STEREO = (CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT),
CHANNEL_OUT_QUAD = (CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_BACK_LEFT | CHANNEL_OUT_BACK_RIGHT),
CHANNEL_OUT_SURROUND = (CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_FRONT_CENTER | CHANNEL_OUT_BACK_CENTER),
CHANNEL_OUT_5POINT1 = (CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_FRONT_CENTER | CHANNEL_OUT_LOW_FREQUENCY | CHANNEL_OUT_BACK_LEFT | CHANNEL_OUT_BACK_RIGHT),
CHANNEL_OUT_7POINT1 = (CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_FRONT_CENTER | CHANNEL_OUT_LOW_FREQUENCY | CHANNEL_OUT_BACK_LEFT | CHANNEL_OUT_BACK_RIGHT |
CHANNEL_OUT_FRONT_LEFT_OF_CENTER | CHANNEL_OUT_FRONT_RIGHT_OF_CENTER),
CHANNEL_OUT_ALL = (CHANNEL_OUT_FRONT_LEFT | CHANNEL_OUT_FRONT_RIGHT |
CHANNEL_OUT_FRONT_CENTER | CHANNEL_OUT_LOW_FREQUENCY | CHANNEL_OUT_BACK_LEFT | CHANNEL_OUT_BACK_RIGHT |
CHANNEL_OUT_FRONT_LEFT_OF_CENTER | CHANNEL_OUT_FRONT_RIGHT_OF_CENTER | CHANNEL_OUT_BACK_CENTER),
// input channels
CHANNEL_IN_LEFT = 0x4,
CHANNEL_IN_RIGHT = 0x8,
CHANNEL_IN_FRONT = 0x10,
CHANNEL_IN_BACK = 0x20,
CHANNEL_IN_LEFT_PROCESSED = 0x40,
CHANNEL_IN_RIGHT_PROCESSED = 0x80,
CHANNEL_IN_FRONT_PROCESSED = 0x100,
CHANNEL_IN_BACK_PROCESSED = 0x200,
CHANNEL_IN_PRESSURE = 0x400,
CHANNEL_IN_X_AXIS = 0x800,
CHANNEL_IN_Y_AXIS = 0x1000,
CHANNEL_IN_Z_AXIS = 0x2000,
CHANNEL_IN_VOICE_UPLINK = 0x4000,
CHANNEL_IN_VOICE_DNLINK = 0x8000,
CHANNEL_IN_MONO = CHANNEL_IN_FRONT,
CHANNEL_IN_STEREO = (CHANNEL_IN_LEFT | CHANNEL_IN_RIGHT),
CHANNEL_IN_ALL = (CHANNEL_IN_LEFT | CHANNEL_IN_RIGHT | CHANNEL_IN_FRONT | CHANNEL_IN_BACK|
CHANNEL_IN_LEFT_PROCESSED | CHANNEL_IN_RIGHT_PROCESSED | CHANNEL_IN_FRONT_PROCESSED | CHANNEL_IN_BACK_PROCESSED|
CHANNEL_IN_PRESSURE | CHANNEL_IN_X_AXIS | CHANNEL_IN_Y_AXIS | CHANNEL_IN_Z_AXIS |
CHANNEL_IN_VOICE_UPLINK | CHANNEL_IN_VOICE_DNLINK)
};
enum audio_mode {
MODE_INVALID = -2,
MODE_CURRENT = -1,
MODE_NORMAL = 0,
MODE_RINGTONE,
MODE_IN_CALL,
MODE_IN_COMMUNICATION,
NUM_MODES // not a valid entry, denotes end-of-list
};
enum audio_in_acoustics {
AGC_ENABLE = 0x0001,
AGC_DISABLE = 0,
NS_ENABLE = 0x0002,
NS_DISABLE = 0,
TX_IIR_ENABLE = 0x0004,
TX_DISABLE = 0
};
// special audio session values
enum audio_sessions {
SESSION_OUTPUT_STAGE = -1, // session for effects attached to a particular output stream
// (value must be less than 0)
SESSION_OUTPUT_MIX = 0, // session for effects applied to output mix. These effects can
// be moved by audio policy manager to another output stream
// (value must be 0)
};
/* These are static methods to control the system-wide AudioFlinger
* only privileged processes can have access to them
*/
// mute/unmute microphone
static status_t muteMicrophone(bool state);
static status_t isMicrophoneMuted(bool *state);
// set/get master volume
static status_t setMasterVolume(float value);
static status_t getMasterVolume(float* volume);
// mute/unmute audio outputs
static status_t setMasterMute(bool mute);
static status_t getMasterMute(bool* mute);
// set/get stream volume on specified output
static status_t setStreamVolume(int stream, float value, int output);
static status_t getStreamVolume(int stream, float* volume, int output);
// mute/unmute stream
static status_t setStreamMute(int stream, bool mute);
static status_t getStreamMute(int stream, bool* mute);
// set audio mode in audio hardware (see AudioSystem::audio_mode)
static status_t setMode(int mode);
// returns true in *state if tracks are active on the specified stream
static status_t isStreamActive(int stream, bool *state);
// set/get audio hardware parameters. The function accepts a list of parameters
// key value pairs in the form: key1=value1;key2=value2;...
// Some keys are reserved for standard parameters (See AudioParameter class).
static status_t setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs);
static String8 getParameters(audio_io_handle_t ioHandle, const String8& keys);
static void setErrorCallback(audio_error_callback cb);
// helper function to obtain AudioFlinger service handle
static const sp<IAudioFlinger>& get_audio_flinger();
static float linearToLog(int volume);
static int logToLinear(float volume);
static status_t getOutputSamplingRate(int* samplingRate, int stream = DEFAULT);
static status_t getOutputFrameCount(int* frameCount, int stream = DEFAULT);
static status_t getOutputLatency(uint32_t* latency, int stream = DEFAULT);
static bool routedToA2dpOutput(int streamType);
static status_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount,
size_t* buffSize);
static status_t setVoiceVolume(float volume);
// return the number of audio frames written by AudioFlinger to audio HAL and
// audio dsp to DAC since the output on which the specificed stream is playing
// has exited standby.
// returned status (from utils/Errors.h) can be:
// - NO_ERROR: successful operation, halFrames and dspFrames point to valid data
// - INVALID_OPERATION: Not supported on current hardware platform
// - BAD_VALUE: invalid parameter
// NOTE: this feature is not supported on all hardware platforms and it is
// necessary to check returned status before using the returned values.
static status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int stream = DEFAULT);
static unsigned int getInputFramesLost(audio_io_handle_t ioHandle);
static int newAudioSessionId();
//
// AudioPolicyService interface
//
enum audio_devices {
// output devices
DEVICE_OUT_EARPIECE = 0x1,
DEVICE_OUT_SPEAKER = 0x2,
DEVICE_OUT_WIRED_HEADSET = 0x4,
DEVICE_OUT_WIRED_HEADPHONE = 0x8,
DEVICE_OUT_BLUETOOTH_SCO = 0x10,
DEVICE_OUT_BLUETOOTH_SCO_HEADSET = 0x20,
DEVICE_OUT_BLUETOOTH_SCO_CARKIT = 0x40,
DEVICE_OUT_BLUETOOTH_A2DP = 0x80,
DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES = 0x100,
DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER = 0x200,
DEVICE_OUT_AUX_DIGITAL = 0x400,
DEVICE_OUT_DEFAULT = 0x8000,
DEVICE_OUT_ALL = (DEVICE_OUT_EARPIECE | DEVICE_OUT_SPEAKER | DEVICE_OUT_WIRED_HEADSET |
DEVICE_OUT_WIRED_HEADPHONE | DEVICE_OUT_BLUETOOTH_SCO | DEVICE_OUT_BLUETOOTH_SCO_HEADSET |
DEVICE_OUT_BLUETOOTH_SCO_CARKIT | DEVICE_OUT_BLUETOOTH_A2DP | DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER | DEVICE_OUT_AUX_DIGITAL | DEVICE_OUT_DEFAULT),
DEVICE_OUT_ALL_A2DP = (DEVICE_OUT_BLUETOOTH_A2DP | DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER),
// input devices
DEVICE_IN_COMMUNICATION = 0x10000,
DEVICE_IN_AMBIENT = 0x20000,
DEVICE_IN_BUILTIN_MIC = 0x40000,
DEVICE_IN_BLUETOOTH_SCO_HEADSET = 0x80000,
DEVICE_IN_WIRED_HEADSET = 0x100000,
DEVICE_IN_AUX_DIGITAL = 0x200000,
DEVICE_IN_VOICE_CALL = 0x400000,
DEVICE_IN_BACK_MIC = 0x800000,
DEVICE_IN_DEFAULT = 0x80000000,
DEVICE_IN_ALL = (DEVICE_IN_COMMUNICATION | DEVICE_IN_AMBIENT | DEVICE_IN_BUILTIN_MIC |
DEVICE_IN_BLUETOOTH_SCO_HEADSET | DEVICE_IN_WIRED_HEADSET | DEVICE_IN_AUX_DIGITAL |
DEVICE_IN_VOICE_CALL | DEVICE_IN_BACK_MIC | DEVICE_IN_DEFAULT)
};
// device connection states used for setDeviceConnectionState()
enum device_connection_state {
DEVICE_STATE_UNAVAILABLE,
DEVICE_STATE_AVAILABLE,
NUM_DEVICE_STATES
};
// request to open a direct output with getOutput() (by opposition to sharing an output with other AudioTracks)
enum output_flags {
OUTPUT_FLAG_INDIRECT = 0x0,
OUTPUT_FLAG_DIRECT = 0x1
};
// device categories used for setForceUse()
enum forced_config {
FORCE_NONE,
FORCE_SPEAKER,
FORCE_HEADPHONES,
FORCE_BT_SCO,
FORCE_BT_A2DP,
FORCE_WIRED_ACCESSORY,
FORCE_BT_CAR_DOCK,
FORCE_BT_DESK_DOCK,
NUM_FORCE_CONFIG,
FORCE_DEFAULT = FORCE_NONE
};
// usages used for setForceUse()
enum force_use {
FOR_COMMUNICATION,
FOR_MEDIA,
FOR_RECORD,
FOR_DOCK,
NUM_FORCE_USE
};
// types of io configuration change events received with ioConfigChanged()
enum io_config_event {
OUTPUT_OPENED,
OUTPUT_CLOSED,
OUTPUT_CONFIG_CHANGED,
INPUT_OPENED,
INPUT_CLOSED,
INPUT_CONFIG_CHANGED,
STREAM_CONFIG_CHANGED,
NUM_CONFIG_EVENTS
};
// audio output descritor used to cache output configurations in client process to avoid frequent calls
// through IAudioFlinger
class OutputDescriptor {
public:
OutputDescriptor()
: samplingRate(0), format(0), channels(0), frameCount(0), latency(0) {}
uint32_t samplingRate;
int32_t format;
int32_t channels;
size_t frameCount;
uint32_t latency;
};
//
// IAudioPolicyService interface (see AudioPolicyInterface for method descriptions)
//
static status_t setDeviceConnectionState(audio_devices device, device_connection_state state, const char *device_address);
static device_connection_state getDeviceConnectionState(audio_devices device, const char *device_address);
static status_t setPhoneState(int state);
static status_t setRingerMode(uint32_t mode, uint32_t mask);
static status_t setForceUse(force_use usage, forced_config config);
static forced_config getForceUse(force_use usage);
static audio_io_handle_t getOutput(stream_type stream,
uint32_t samplingRate = 0,
uint32_t format = FORMAT_DEFAULT,
uint32_t channels = CHANNEL_OUT_STEREO,
output_flags flags = OUTPUT_FLAG_INDIRECT);
static status_t startOutput(audio_io_handle_t output,
AudioSystem::stream_type stream,
int session = 0);
static status_t stopOutput(audio_io_handle_t output,
AudioSystem::stream_type stream,
int session = 0);
static void releaseOutput(audio_io_handle_t output);
static audio_io_handle_t getInput(int inputSource,
uint32_t samplingRate = 0,
uint32_t format = FORMAT_DEFAULT,
uint32_t channels = CHANNEL_IN_MONO,
audio_in_acoustics acoustics = (audio_in_acoustics)0);
static status_t startInput(audio_io_handle_t input);
static status_t stopInput(audio_io_handle_t input);
static void releaseInput(audio_io_handle_t input);
static status_t initStreamVolume(stream_type stream,
int indexMin,
int indexMax);
static status_t setStreamVolumeIndex(stream_type stream, int index);
static status_t getStreamVolumeIndex(stream_type stream, int *index);
static uint32_t getStrategyForStream(stream_type stream);
static audio_io_handle_t getOutputForEffect(effect_descriptor_t *desc);
static status_t registerEffect(effect_descriptor_t *desc,
audio_io_handle_t output,
uint32_t strategy,
int session,
int id);
static status_t unregisterEffect(int id);
static const sp<IAudioPolicyService>& get_audio_policy_service();
// ----------------------------------------------------------------------------
static uint32_t popCount(uint32_t u);
static bool isOutputDevice(audio_devices device);
static bool isInputDevice(audio_devices device);
static bool isA2dpDevice(audio_devices device);
static bool isBluetoothScoDevice(audio_devices device);
static bool isSeperatedStream(stream_type stream);
static bool isLowVisibility(stream_type stream);
static bool isOutputChannel(uint32_t channel);
static bool isInputChannel(uint32_t channel);
static bool isValidFormat(uint32_t format);
static bool isLinearPCM(uint32_t format);
static bool isModeInCall();
private:
class AudioFlingerClient: public IBinder::DeathRecipient, public BnAudioFlingerClient
{
public:
AudioFlingerClient() {
}
// DeathRecipient
virtual void binderDied(const wp<IBinder>& who);
// IAudioFlingerClient
// indicate a change in the configuration of an output or input: keeps the cached
// values for output/input parameters upto date in client process
virtual void ioConfigChanged(int event, int ioHandle, void *param2);
};
class AudioPolicyServiceClient: public IBinder::DeathRecipient
{
public:
AudioPolicyServiceClient() {
}
// DeathRecipient
virtual void binderDied(const wp<IBinder>& who);
};
static sp<AudioFlingerClient> gAudioFlingerClient;
static sp<AudioPolicyServiceClient> gAudioPolicyServiceClient;
friend class AudioFlingerClient;
friend class AudioPolicyServiceClient;
static Mutex gLock;
static sp<IAudioFlinger> gAudioFlinger;
static audio_error_callback gAudioErrorCallback;
static size_t gInBuffSize;
// previous parameters for recording buffer size queries
static uint32_t gPrevInSamplingRate;
static int gPrevInFormat;
static int gPrevInChannelCount;
static sp<IAudioPolicyService> gAudioPolicyService;
// mapping between stream types and outputs
static DefaultKeyedVector<int, audio_io_handle_t> gStreamOutputMap;
// list of output descritor containing cached parameters (sampling rate, framecount, channel count...)
static DefaultKeyedVector<audio_io_handle_t, OutputDescriptor *> gOutputs;
};
class AudioParameter {
public:
AudioParameter() {}
AudioParameter(const String8& keyValuePairs);
virtual ~AudioParameter();
// reserved parameter keys for changing standard parameters with setParameters() function.
// Using these keys is mandatory for AudioFlinger to properly monitor audio output/input
// configuration changes and act accordingly.
// keyRouting: to change audio routing, value is an int in AudioSystem::audio_devices
// keySamplingRate: to change sampling rate routing, value is an int
// keyFormat: to change audio format, value is an int in AudioSystem::audio_format
// keyChannels: to change audio channel configuration, value is an int in AudioSystem::audio_channels
// keyFrameCount: to change audio output frame count, value is an int
// keyInputSource: to change audio input source, value is an int in audio_source
// (defined in media/mediarecorder.h)
static const char *keyRouting;
static const char *keySamplingRate;
static const char *keyFormat;
static const char *keyChannels;
static const char *keyFrameCount;
static const char *keyInputSource;
String8 toString();
status_t add(const String8& key, const String8& value);
status_t addInt(const String8& key, const int value);
status_t addFloat(const String8& key, const float value);
status_t remove(const String8& key);
status_t get(const String8& key, String8& value);
status_t getInt(const String8& key, int& value);
status_t getFloat(const String8& key, float& value);
status_t getAt(size_t index, String8& key, String8& value);
size_t size() { return mParameters.size(); }
private:
String8 mKeyValuePairs;
KeyedVector <String8, String8> mParameters;
};
}; // namespace android
#endif /*ANDROID_AUDIOSYSTEM_H_*/

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/*
* Copyright (C) 2007 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.
*/
#ifndef ANDROID_AUDIOTRACK_H
#define ANDROID_AUDIOTRACK_H
#include <stdint.h>
#include <sys/types.h>
#include "IAudioFlinger.h"
#include "IAudioTrack.h"
#include "AudioSystem.h"
#include <utils/RefBase.h>
#include <utils/Errors.h>
#include <binder/IInterface.h>
#include <binder/IMemory.h>
#include <utils/threads.h>
namespace android {
// ----------------------------------------------------------------------------
class audio_track_cblk_t;
// ----------------------------------------------------------------------------
class AudioTrack
{
public:
enum channel_index {
MONO = 0,
LEFT = 0,
RIGHT = 1
};
/* Events used by AudioTrack callback function (audio_track_cblk_t).
*/
enum event_type {
EVENT_MORE_DATA = 0, // Request to write more data to PCM buffer.
EVENT_UNDERRUN = 1, // PCM buffer underrun occured.
EVENT_LOOP_END = 2, // Sample loop end was reached; playback restarted from loop start if loop count was not 0.
EVENT_MARKER = 3, // Playback head is at the specified marker position (See setMarkerPosition()).
EVENT_NEW_POS = 4, // Playback head is at a new position (See setPositionUpdatePeriod()).
EVENT_BUFFER_END = 5 // Playback head is at the end of the buffer.
};
/* Create Buffer on the stack and pass it to obtainBuffer()
* and releaseBuffer().
*/
class Buffer
{
public:
enum {
MUTE = 0x00000001
};
uint32_t flags;
int channelCount;
int format;
size_t frameCount;
size_t size;
union {
void* raw;
short* i16;
int8_t* i8;
};
};
/* As a convenience, if a callback is supplied, a handler thread
* is automatically created with the appropriate priority. This thread
* invokes the callback when a new buffer becomes availlable or an underrun condition occurs.
* Parameters:
*
* event: type of event notified (see enum AudioTrack::event_type).
* user: Pointer to context for use by the callback receiver.
* info: Pointer to optional parameter according to event type:
* - EVENT_MORE_DATA: pointer to AudioTrack::Buffer struct. The callback must not write
* more bytes than indicated by 'size' field and update 'size' if less bytes are
* written.
* - EVENT_UNDERRUN: unused.
* - EVENT_LOOP_END: pointer to an int indicating the number of loops remaining.
* - EVENT_MARKER: pointer to an uin32_t containing the marker position in frames.
* - EVENT_NEW_POS: pointer to an uin32_t containing the new position in frames.
* - EVENT_BUFFER_END: unused.
*/
typedef void (*callback_t)(int event, void* user, void *info);
/* Returns the minimum frame count required for the successful creation of
* an AudioTrack object.
* Returned status (from utils/Errors.h) can be:
* - NO_ERROR: successful operation
* - NO_INIT: audio server or audio hardware not initialized
*/
static status_t getMinFrameCount(int* frameCount,
int streamType =-1,
uint32_t sampleRate = 0);
/* Constructs an uninitialized AudioTrack. No connection with
* AudioFlinger takes place.
*/
AudioTrack();
/* Creates an audio track and registers it with AudioFlinger.
* Once created, the track needs to be started before it can be used.
* Unspecified values are set to the audio hardware's current
* values.
*
* Parameters:
*
* streamType: Select the type of audio stream this track is attached to
* (e.g. AudioSystem::MUSIC).
* sampleRate: Track sampling rate in Hz.
* format: Audio format (e.g AudioSystem::PCM_16_BIT for signed
* 16 bits per sample).
* channels: Channel mask: see AudioSystem::audio_channels.
* frameCount: Total size of track PCM buffer in frames. This defines the
* latency of the track.
* flags: Reserved for future use.
* cbf: Callback function. If not null, this function is called periodically
* to request new PCM data.
* notificationFrames: The callback function is called each time notificationFrames PCM
* frames have been comsumed from track input buffer.
* user Context for use by the callback receiver.
*/
AudioTrack( int streamType,
uint32_t sampleRate = 0,
int format = 0,
int channels = 0,
int frameCount = 0,
uint32_t flags = 0,
callback_t cbf = 0,
void* user = 0,
int notificationFrames = 0,
int sessionId = 0);
/* Creates an audio track and registers it with AudioFlinger. With this constructor,
* The PCM data to be rendered by AudioTrack is passed in a shared memory buffer
* identified by the argument sharedBuffer. This prototype is for static buffer playback.
* PCM data must be present into memory before the AudioTrack is started.
* The Write() and Flush() methods are not supported in this case.
* It is recommented to pass a callback function to be notified of playback end by an
* EVENT_UNDERRUN event.
*/
AudioTrack( int streamType,
uint32_t sampleRate = 0,
int format = 0,
int channels = 0,
const sp<IMemory>& sharedBuffer = 0,
uint32_t flags = 0,
callback_t cbf = 0,
void* user = 0,
int notificationFrames = 0,
int sessionId = 0);
/* Terminates the AudioTrack and unregisters it from AudioFlinger.
* Also destroys all resources assotiated with the AudioTrack.
*/
~AudioTrack();
/* Initialize an uninitialized AudioTrack.
* Returned status (from utils/Errors.h) can be:
* - NO_ERROR: successful intialization
* - INVALID_OPERATION: AudioTrack is already intitialized
* - BAD_VALUE: invalid parameter (channels, format, sampleRate...)
* - NO_INIT: audio server or audio hardware not initialized
* */
status_t set(int streamType =-1,
uint32_t sampleRate = 0,
int format = 0,
int channels = 0,
int frameCount = 0,
uint32_t flags = 0,
callback_t cbf = 0,
void* user = 0,
int notificationFrames = 0,
const sp<IMemory>& sharedBuffer = 0,
bool threadCanCallJava = false,
int sessionId = 0);
/* Result of constructing the AudioTrack. This must be checked
* before using any AudioTrack API (except for set()), using
* an uninitialized AudioTrack produces undefined results.
* See set() method above for possible return codes.
*/
status_t initCheck() const;
/* Returns this track's latency in milliseconds.
* This includes the latency due to AudioTrack buffer size, AudioMixer (if any)
* and audio hardware driver.
*/
uint32_t latency() const;
/* getters, see constructor */
int streamType() const;
int format() const;
int channelCount() const;
uint32_t frameCount() const;
int frameSize() const;
sp<IMemory>& sharedBuffer();
/* After it's created the track is not active. Call start() to
* make it active. If set, the callback will start being called.
*/
void start();
/* Stop a track. If set, the callback will cease being called and
* obtainBuffer returns STOPPED. Note that obtainBuffer() still works
* and will fill up buffers until the pool is exhausted.
*/
void stop();
bool stopped() const;
/* flush a stopped track. All pending buffers are discarded.
* This function has no effect if the track is not stoped.
*/
void flush();
/* Pause a track. If set, the callback will cease being called and
* obtainBuffer returns STOPPED. Note that obtainBuffer() still works
* and will fill up buffers until the pool is exhausted.
*/
void pause();
/* mute or unmutes this track.
* While mutted, the callback, if set, is still called.
*/
void mute(bool);
bool muted() const;
/* set volume for this track, mostly used for games' sound effects
* left and right volumes. Levels must be <= 1.0.
*/
status_t setVolume(float left, float right);
void getVolume(float* left, float* right);
/* set the send level for this track. An auxiliary effect should be attached
* to the track with attachEffect(). Level must be <= 1.0.
*/
status_t setAuxEffectSendLevel(float level);
void getAuxEffectSendLevel(float* level);
/* set sample rate for this track, mostly used for games' sound effects
*/
status_t setSampleRate(int sampleRate);
uint32_t getSampleRate();
/* Enables looping and sets the start and end points of looping.
*
* Parameters:
*
* loopStart: loop start expressed as the number of PCM frames played since AudioTrack start.
* loopEnd: loop end expressed as the number of PCM frames played since AudioTrack start.
* loopCount: number of loops to execute. Calling setLoop() with loopCount == 0 cancels any pending or
* active loop. loopCount = -1 means infinite looping.
*
* For proper operation the following condition must be respected:
* (loopEnd-loopStart) <= framecount()
*/
status_t setLoop(uint32_t loopStart, uint32_t loopEnd, int loopCount);
status_t getLoop(uint32_t *loopStart, uint32_t *loopEnd, int *loopCount);
/* Sets marker position. When playback reaches the number of frames specified, a callback with event
* type EVENT_MARKER is called. Calling setMarkerPosition with marker == 0 cancels marker notification
* callback.
* If the AudioTrack has been opened with no callback function associated, the operation will fail.
*
* Parameters:
*
* marker: marker position expressed in frames.
*
* Returned status (from utils/Errors.h) can be:
* - NO_ERROR: successful operation
* - INVALID_OPERATION: the AudioTrack has no callback installed.
*/
status_t setMarkerPosition(uint32_t marker);
status_t getMarkerPosition(uint32_t *marker);
/* Sets position update period. Every time the number of frames specified has been played,
* a callback with event type EVENT_NEW_POS is called.
* Calling setPositionUpdatePeriod with updatePeriod == 0 cancels new position notification
* callback.
* If the AudioTrack has been opened with no callback function associated, the operation will fail.
*
* Parameters:
*
* updatePeriod: position update notification period expressed in frames.
*
* Returned status (from utils/Errors.h) can be:
* - NO_ERROR: successful operation
* - INVALID_OPERATION: the AudioTrack has no callback installed.
*/
status_t setPositionUpdatePeriod(uint32_t updatePeriod);
status_t getPositionUpdatePeriod(uint32_t *updatePeriod);
/* Sets playback head position within AudioTrack buffer. The new position is specified
* in number of frames.
* This method must be called with the AudioTrack in paused or stopped state.
* Note that the actual position set is <position> modulo the AudioTrack buffer size in frames.
* Therefore using this method makes sense only when playing a "static" audio buffer
* as opposed to streaming.
* The getPosition() method on the other hand returns the total number of frames played since
* playback start.
*
* Parameters:
*
* position: New playback head position within AudioTrack buffer.
*
* Returned status (from utils/Errors.h) can be:
* - NO_ERROR: successful operation
* - INVALID_OPERATION: the AudioTrack is not stopped.
* - BAD_VALUE: The specified position is beyond the number of frames present in AudioTrack buffer
*/
status_t setPosition(uint32_t position);
status_t getPosition(uint32_t *position);
/* Forces AudioTrack buffer full condition. When playing a static buffer, this method avoids
* rewriting the buffer before restarting playback after a stop.
* This method must be called with the AudioTrack in paused or stopped state.
*
* Returned status (from utils/Errors.h) can be:
* - NO_ERROR: successful operation
* - INVALID_OPERATION: the AudioTrack is not stopped.
*/
status_t reload();
/* returns a handle on the audio output used by this AudioTrack.
*
* Parameters:
* none.
*
* Returned value:
* handle on audio hardware output
*/
audio_io_handle_t getOutput();
/* returns the unique ID associated to this track.
*
* Parameters:
* none.
*
* Returned value:
* AudioTrack ID.
*/
int getSessionId();
/* Attach track auxiliary output to specified effect. Used effectId = 0
* to detach track from effect.
*
* Parameters:
*
* effectId: effectId obtained from AudioEffect::id().
*
* Returned status (from utils/Errors.h) can be:
* - NO_ERROR: successful operation
* - INVALID_OPERATION: the effect is not an auxiliary effect.
* - BAD_VALUE: The specified effect ID is invalid
*/
status_t attachAuxEffect(int effectId);
/* obtains a buffer of "frameCount" frames. The buffer must be
* filled entirely. If the track is stopped, obtainBuffer() returns
* STOPPED instead of NO_ERROR as long as there are buffers availlable,
* at which point NO_MORE_BUFFERS is returned.
* Buffers will be returned until the pool (buffercount())
* is exhausted, at which point obtainBuffer() will either block
* or return WOULD_BLOCK depending on the value of the "blocking"
* parameter.
*/
enum {
NO_MORE_BUFFERS = 0x80000001,
STOPPED = 1
};
status_t obtainBuffer(Buffer* audioBuffer, int32_t waitCount);
void releaseBuffer(Buffer* audioBuffer);
/* As a convenience we provide a write() interface to the audio buffer.
* This is implemented on top of lockBuffer/unlockBuffer. For best
* performance
*
*/
ssize_t write(const void* buffer, size_t size);
/*
* Dumps the state of an audio track.
*/
status_t dump(int fd, const Vector<String16>& args) const;
private:
/* copying audio tracks is not allowed */
AudioTrack(const AudioTrack& other);
AudioTrack& operator = (const AudioTrack& other);
/* a small internal class to handle the callback */
class AudioTrackThread : public Thread
{
public:
AudioTrackThread(AudioTrack& receiver, bool bCanCallJava = false);
private:
friend class AudioTrack;
virtual bool threadLoop();
virtual status_t readyToRun();
virtual void onFirstRef();
AudioTrack& mReceiver;
Mutex mLock;
};
bool processAudioBuffer(const sp<AudioTrackThread>& thread);
status_t createTrack(int streamType,
uint32_t sampleRate,
int format,
int channelCount,
int frameCount,
uint32_t flags,
const sp<IMemory>& sharedBuffer,
audio_io_handle_t output,
bool enforceFrameCount);
sp<IAudioTrack> mAudioTrack;
sp<IMemory> mCblkMemory;
sp<AudioTrackThread> mAudioTrackThread;
float mVolume[2];
float mSendLevel;
uint32_t mFrameCount;
audio_track_cblk_t* mCblk;
uint8_t mStreamType;
uint8_t mFormat;
uint8_t mChannelCount;
uint8_t mMuted;
uint32_t mChannels;
status_t mStatus;
uint32_t mLatency;
volatile int32_t mActive;
callback_t mCbf;
void* mUserData;
uint32_t mNotificationFramesReq; // requested number of frames between each notification callback
uint32_t mNotificationFramesAct; // actual number of frames between each notification callback
sp<IMemory> mSharedBuffer;
int mLoopCount;
uint32_t mRemainingFrames;
uint32_t mMarkerPosition;
bool mMarkerReached;
uint32_t mNewPosition;
uint32_t mUpdatePeriod;
uint32_t mFlags;
int mSessionId;
int mAuxEffectId;
};
}; // namespace android
#endif // ANDROID_AUDIOTRACK_H

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/*
* Copyright (C) 2010 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.
*/
#ifndef ANDROID_EFFECTAPI_H_
#define ANDROID_EFFECTAPI_H_
#include <errno.h>
#include <stdint.h>
#include <sys/types.h>
#if __cplusplus
extern "C" {
#endif
/////////////////////////////////////////////////
// Effect control interface
/////////////////////////////////////////////////
// The effect control interface is exposed by each effect engine implementation. It consists of
// a set of functions controlling the configuration, activation and process of the engine.
// The functions are grouped in a structure of type effect_interface_s:
// struct effect_interface_s {
// effect_process_t process;
// effect_command_t command;
// };
// effect_interface_t: Effect control interface handle.
// The effect_interface_t serves two purposes regarding the implementation of the effect engine:
// - 1 it is the address of a pointer to an effect_interface_s structure where the functions
// of the effect control API for a particular effect are located.
// - 2 it is the address of the context of a particular effect instance.
// A typical implementation in the effect library would define a structure as follows:
// struct effect_module_s {
// const struct effect_interface_s *itfe;
// effect_config_t config;
// effect_context_t context;
// }
// The implementation of EffectCreate() function would then allocate a structure of this
// type and return its address as effect_interface_t
typedef struct effect_interface_s **effect_interface_t;
// Effect API version 1.0
#define EFFECT_API_VERSION 0x0100 // Format 0xMMmm MM: Major version, mm: minor version
// Maximum length of character strings in structures defines by this API.
#define EFFECT_STRING_LEN_MAX 64
//
//--- Effect descriptor structure effect_descriptor_t
//
// Unique effect ID (can be generated from the following site:
// http://www.itu.int/ITU-T/asn1/uuid.html)
// This format is used for both "type" and "uuid" fields of the effect descriptor structure.
// - When used for effect type and the engine is implementing and effect corresponding to a standard
// OpenSL ES interface, this ID must be the one defined in OpenSLES_IID.h for that interface.
// - When used as uuid, it should be a unique UUID for this particular implementation.
typedef struct effect_uuid_s {
uint32_t timeLow;
uint16_t timeMid;
uint16_t timeHiAndVersion;
uint16_t clockSeq;
uint8_t node[6];
} effect_uuid_t;
// NULL UUID definition (matches SL_IID_NULL_)
#define EFFECT_UUID_INITIALIZER { 0xec7178ec, 0xe5e1, 0x4432, 0xa3f4, \
{ 0x46, 0x57, 0xe6, 0x79, 0x52, 0x10 } }
static const effect_uuid_t EFFECT_UUID_NULL_ = EFFECT_UUID_INITIALIZER;
const effect_uuid_t * const EFFECT_UUID_NULL = &EFFECT_UUID_NULL_;
const char * const EFFECT_UUID_NULL_STR = "ec7178ec-e5e1-4432-a3f4-4657e6795210";
// The effect descriptor contains necessary information to facilitate the enumeration of the effect
// engines present in a library.
typedef struct effect_descriptor_s {
effect_uuid_t type; // UUID of to the OpenSL ES interface implemented by this effect
effect_uuid_t uuid; // UUID for this particular implementation
uint16_t apiVersion; // Version of the effect API implemented: matches EFFECT_API_VERSION
uint32_t flags; // effect engine capabilities/requirements flags (see below)
uint16_t cpuLoad; // CPU load indication (see below)
uint16_t memoryUsage; // Data Memory usage (see below)
char name[EFFECT_STRING_LEN_MAX]; // human readable effect name
char implementor[EFFECT_STRING_LEN_MAX]; // human readable effect implementor name
} effect_descriptor_t;
// CPU load and memory usage indication: each effect implementation must provide an indication of
// its CPU and memory usage for the audio effect framework to limit the number of effects
// instantiated at a given time on a given platform.
// The CPU load is expressed in 0.1 MIPS units as estimated on an ARM9E core (ARMv5TE) with 0 WS.
// The memory usage is expressed in KB and includes only dynamically allocated memory
// Definitions for flags field of effect descriptor.
// +---------------------------+-----------+-----------------------------------
// | description | bits | values
// +---------------------------+-----------+-----------------------------------
// | connection mode | 0..1 | 0 insert: after track process
// | | | 1 auxiliary: connect to track auxiliary
// | | | output and use send level
// | | | 2 replace: replaces track process function;
// | | | must implement SRC, volume and mono to stereo.
// | | | 3 reserved
// +---------------------------+-----------+-----------------------------------
// | insertion preference | 2..4 | 0 none
// | | | 1 first of the chain
// | | | 2 last of the chain
// | | | 3 exclusive (only effect in the insert chain)
// | | | 4..7 reserved
// +---------------------------+-----------+-----------------------------------
// | Volume management | 5..6 | 0 none
// | | | 1 implements volume control
// | | | 2 requires volume indication
// | | | 3 reserved
// +---------------------------+-----------+-----------------------------------
// | Device indication | 7..8 | 0 none
// | | | 1 requires device updates
// | | | 2..3 reserved
// +---------------------------+-----------+-----------------------------------
// | Sample input mode | 9..10 | 0 direct: process() function or EFFECT_CMD_CONFIGURE
// | | | command must specify a buffer descriptor
// | | | 1 provider: process() function uses the
// | | | bufferProvider indicated by the
// | | | EFFECT_CMD_CONFIGURE command to request input.
// | | | buffers.
// | | | 2 both: both input modes are supported
// | | | 3 reserved
// +---------------------------+-----------+-----------------------------------
// | Sample output mode | 11..12 | 0 direct: process() function or EFFECT_CMD_CONFIGURE
// | | | command must specify a buffer descriptor
// | | | 1 provider: process() function uses the
// | | | bufferProvider indicated by the
// | | | EFFECT_CMD_CONFIGURE command to request output
// | | | buffers.
// | | | 2 both: both output modes are supported
// | | | 3 reserved
// +---------------------------+-----------+-----------------------------------
// | Hardware acceleration | 13..15 | 0 No hardware acceleration
// | | | 1 non tunneled hw acceleration: the process() function
// | | | reads the samples, send them to HW accelerated
// | | | effect processor, reads back the processed samples
// | | | and returns them to the output buffer.
// | | | 2 tunneled hw acceleration: the process() function is
// | | | transparent. The effect interface is only used to
// | | | control the effect engine. This mode is relevant for
// | | | global effects actually applied by the audio
// | | | hardware on the output stream.
// +---------------------------+-----------+-----------------------------------
// | Audio Mode indication | 16..17 | 0 none
// | | | 1 requires audio mode updates
// | | | 2..3 reserved
// +---------------------------+-----------+-----------------------------------
// Insert mode
#define EFFECT_FLAG_TYPE_MASK 0x00000003
#define EFFECT_FLAG_TYPE_INSERT 0x00000000
#define EFFECT_FLAG_TYPE_AUXILIARY 0x00000001
#define EFFECT_FLAG_TYPE_REPLACE 0x00000002
// Insert preference
#define EFFECT_FLAG_INSERT_MASK 0x0000001C
#define EFFECT_FLAG_INSERT_ANY 0x00000000
#define EFFECT_FLAG_INSERT_FIRST 0x00000004
#define EFFECT_FLAG_INSERT_LAST 0x00000008
#define EFFECT_FLAG_INSERT_EXCLUSIVE 0x0000000C
// Volume control
#define EFFECT_FLAG_VOLUME_MASK 0x00000060
#define EFFECT_FLAG_VOLUME_CTRL 0x00000020
#define EFFECT_FLAG_VOLUME_IND 0x00000040
#define EFFECT_FLAG_VOLUME_NONE 0x00000000
// Device indication
#define EFFECT_FLAG_DEVICE_MASK 0x00000180
#define EFFECT_FLAG_DEVICE_IND 0x00000080
#define EFFECT_FLAG_DEVICE_NONE 0x00000000
// Sample input modes
#define EFFECT_FLAG_INPUT_MASK 0x00000600
#define EFFECT_FLAG_INPUT_DIRECT 0x00000000
#define EFFECT_FLAG_INPUT_PROVIDER 0x00000200
#define EFFECT_FLAG_INPUT_BOTH 0x00000400
// Sample output modes
#define EFFECT_FLAG_OUTPUT_MASK 0x00001800
#define EFFECT_FLAG_OUTPUT_DIRECT 0x00000000
#define EFFECT_FLAG_OUTPUT_PROVIDER 0x00000800
#define EFFECT_FLAG_OUTPUT_BOTH 0x00001000
// Hardware acceleration mode
#define EFFECT_FLAG_HW_ACC_MASK 0x00006000
#define EFFECT_FLAG_HW_ACC_SIMPLE 0x00002000
#define EFFECT_FLAG_HW_ACC_TUNNEL 0x00004000
// Audio mode indication
#define EFFECT_FLAG_AUDIO_MODE_MASK 0x00018000
#define EFFECT_FLAG_AUDIO_MODE_IND 0x00008000
#define EFFECT_FLAG_AUDIO_MODE_NONE 0x00000000
// Forward definition of type audio_buffer_t
typedef struct audio_buffer_s audio_buffer_t;
////////////////////////////////////////////////////////////////////////////////
//
// Function: process
//
// Description: Effect process function. Takes input samples as specified
// (count and location) in input buffer descriptor and output processed
// samples as specified in output buffer descriptor. If the buffer descriptor
// is not specified the function must use either the buffer or the
// buffer provider function installed by the EFFECT_CMD_CONFIGURE command.
// The effect framework will call the process() function after the EFFECT_CMD_ENABLE
// command is received and until the EFFECT_CMD_DISABLE is received. When the engine
// receives the EFFECT_CMD_DISABLE command it should turn off the effect gracefully
// and when done indicate that it is OK to stop calling the process() function by
// returning the -ENODATA status.
//
// NOTE: the process() function implementation should be "real-time safe" that is
// it should not perform blocking calls: malloc/free, sleep, read/write/open/close,
// pthread_cond_wait/pthread_mutex_lock...
//
// Input:
// effect_interface_t: handle to the effect interface this function
// is called on.
// inBuffer: buffer descriptor indicating where to read samples to process.
// If NULL, use the configuration passed by EFFECT_CMD_CONFIGURE command.
//
// inBuffer: buffer descriptor indicating where to write processed samples.
// If NULL, use the configuration passed by EFFECT_CMD_CONFIGURE command.
//
// Output:
// returned value: 0 successful operation
// -ENODATA the engine has finished the disable phase and the framework
// can stop calling process()
// -EINVAL invalid interface handle or
// invalid input/output buffer description
////////////////////////////////////////////////////////////////////////////////
typedef int32_t (*effect_process_t)(effect_interface_t self,
audio_buffer_t *inBuffer,
audio_buffer_t *outBuffer);
////////////////////////////////////////////////////////////////////////////////
//
// Function: command
//
// Description: Send a command and receive a response to/from effect engine.
//
// Input:
// effect_interface_t: handle to the effect interface this function
// is called on.
// cmdCode: command code: the command can be a standardized command defined in
// effect_command_e (see below) or a proprietary command.
// cmdSize: size of command in bytes
// pCmdData: pointer to command data
// pReplyData: pointer to reply data
//
// Input/Output:
// replySize: maximum size of reply data as input
// actual size of reply data as output
//
// Output:
// returned value: 0 successful operation
// -EINVAL invalid interface handle or
// invalid command/reply size or format according to command code
// The return code should be restricted to indicate problems related to the this
// API specification. Status related to the execution of a particular command should be
// indicated as part of the reply field.
//
// *pReplyData updated with command response
//
////////////////////////////////////////////////////////////////////////////////
typedef int32_t (*effect_command_t)(effect_interface_t self,
uint32_t cmdCode,
uint32_t cmdSize,
void *pCmdData,
uint32_t *replySize,
void *pReplyData);
// Effect control interface definition
struct effect_interface_s {
effect_process_t process;
effect_command_t command;
};
//
//--- Standardized command codes for command() function
//
enum effect_command_e {
EFFECT_CMD_INIT, // initialize effect engine
EFFECT_CMD_CONFIGURE, // configure effect engine (see effect_config_t)
EFFECT_CMD_RESET, // reset effect engine
EFFECT_CMD_ENABLE, // enable effect process
EFFECT_CMD_DISABLE, // disable effect process
EFFECT_CMD_SET_PARAM, // set parameter immediately (see effect_param_t)
EFFECT_CMD_SET_PARAM_DEFERRED, // set parameter deferred
EFFECT_CMD_SET_PARAM_COMMIT, // commit previous set parameter deferred
EFFECT_CMD_GET_PARAM, // get parameter
EFFECT_CMD_SET_DEVICE, // set audio device (see audio_device_e)
EFFECT_CMD_SET_VOLUME, // set volume
EFFECT_CMD_SET_AUDIO_MODE, // set the audio mode (normal, ring, ...)
EFFECT_CMD_FIRST_PROPRIETARY = 0x10000 // first proprietary command code
};
//==================================================================================================
// command: EFFECT_CMD_INIT
//--------------------------------------------------------------------------------------------------
// description:
// Initialize effect engine: All configurations return to default
//--------------------------------------------------------------------------------------------------
// command format:
// size: 0
// data: N/A
//--------------------------------------------------------------------------------------------------
// reply format:
// size: sizeof(int)
// data: status
//==================================================================================================
// command: EFFECT_CMD_CONFIGURE
//--------------------------------------------------------------------------------------------------
// description:
// Apply new audio parameters configurations for input and output buffers
//--------------------------------------------------------------------------------------------------
// command format:
// size: sizeof(effect_config_t)
// data: effect_config_t
//--------------------------------------------------------------------------------------------------
// reply format:
// size: sizeof(int)
// data: status
//==================================================================================================
// command: EFFECT_CMD_RESET
//--------------------------------------------------------------------------------------------------
// description:
// Reset the effect engine. Keep configuration but resets state and buffer content
//--------------------------------------------------------------------------------------------------
// command format:
// size: 0
// data: N/A
//--------------------------------------------------------------------------------------------------
// reply format:
// size: 0
// data: N/A
//==================================================================================================
// command: EFFECT_CMD_ENABLE
//--------------------------------------------------------------------------------------------------
// description:
// Enable the process. Called by the framework before the first call to process()
//--------------------------------------------------------------------------------------------------
// command format:
// size: 0
// data: N/A
//--------------------------------------------------------------------------------------------------
// reply format:
// size: sizeof(int)
// data: status
//==================================================================================================
// command: EFFECT_CMD_DISABLE
//--------------------------------------------------------------------------------------------------
// description:
// Disable the process. Called by the framework after the last call to process()
//--------------------------------------------------------------------------------------------------
// command format:
// size: 0
// data: N/A
//--------------------------------------------------------------------------------------------------
// reply format:
// size: sizeof(int)
// data: status
//==================================================================================================
// command: EFFECT_CMD_SET_PARAM
//--------------------------------------------------------------------------------------------------
// description:
// Set a parameter and apply it immediately
//--------------------------------------------------------------------------------------------------
// command format:
// size: sizeof(effect_param_t) + size of param and value
// data: effect_param_t + param + value. See effect_param_t definition below for value offset
//--------------------------------------------------------------------------------------------------
// reply format:
// size: sizeof(int)
// data: status
//==================================================================================================
// command: EFFECT_CMD_SET_PARAM_DEFERRED
//--------------------------------------------------------------------------------------------------
// description:
// Set a parameter but apply it only when receiving EFFECT_CMD_SET_PARAM_COMMIT command
//--------------------------------------------------------------------------------------------------
// command format:
// size: sizeof(effect_param_t) + size of param and value
// data: effect_param_t + param + value. See effect_param_t definition below for value offset
//--------------------------------------------------------------------------------------------------
// reply format:
// size: 0
// data: N/A
//==================================================================================================
// command: EFFECT_CMD_SET_PARAM_COMMIT
//--------------------------------------------------------------------------------------------------
// description:
// Apply all previously received EFFECT_CMD_SET_PARAM_DEFERRED commands
//--------------------------------------------------------------------------------------------------
// command format:
// size: 0
// data: N/A
//--------------------------------------------------------------------------------------------------
// reply format:
// size: sizeof(int)
// data: status
//==================================================================================================
// command: EFFECT_CMD_GET_PARAM
//--------------------------------------------------------------------------------------------------
// description:
// Get a parameter value
//--------------------------------------------------------------------------------------------------
// command format:
// size: sizeof(effect_param_t) + size of param
// data: effect_param_t + param
//--------------------------------------------------------------------------------------------------
// reply format:
// size: sizeof(effect_param_t) + size of param and value
// data: effect_param_t + param + value. See effect_param_t definition below for value offset
//==================================================================================================
// command: EFFECT_CMD_SET_DEVICE
//--------------------------------------------------------------------------------------------------
// description:
// Set the rendering device the audio output path is connected to. See audio_device_e for device
// values.
// The effect implementation must set EFFECT_FLAG_DEVICE_IND flag in its descriptor to receive this
// command when the device changes
//--------------------------------------------------------------------------------------------------
// command format:
// size: sizeof(uint32_t)
// data: audio_device_e
//--------------------------------------------------------------------------------------------------
// reply format:
// size: 0
// data: N/A
//==================================================================================================
// command: EFFECT_CMD_SET_VOLUME
//--------------------------------------------------------------------------------------------------
// description:
// Set and get volume. Used by audio framework to delegate volume control to effect engine.
// The effect implementation must set EFFECT_FLAG_VOLUME_IND or EFFECT_FLAG_VOLUME_CTRL flag in
// its descriptor to receive this command before every call to process() function
// If EFFECT_FLAG_VOLUME_CTRL flag is set in the effect descriptor, the effect engine must return
// the volume that should be applied before the effect is processed. The overall volume (the volume
// actually applied by the effect engine multiplied by the returned value) should match the value
// indicated in the command.
//--------------------------------------------------------------------------------------------------
// command format:
// size: n * sizeof(uint32_t)
// data: volume for each channel defined in effect_config_t for output buffer expressed in
// 8.24 fixed point format
//--------------------------------------------------------------------------------------------------
// reply format:
// size: n * sizeof(uint32_t) / 0
// data: - if EFFECT_FLAG_VOLUME_CTRL is set in effect descriptor:
// volume for each channel defined in effect_config_t for output buffer expressed in
// 8.24 fixed point format
// - if EFFECT_FLAG_VOLUME_CTRL is not set in effect descriptor:
// N/A
// It is legal to receive a null pointer as pReplyData in which case the effect framework has
// delegated volume control to another effect
//==================================================================================================
// command: EFFECT_CMD_SET_AUDIO_MODE
//--------------------------------------------------------------------------------------------------
// description:
// Set the audio mode. The effect implementation must set EFFECT_FLAG_AUDIO_MODE_IND flag in its
// descriptor to receive this command when the audio mode changes.
//--------------------------------------------------------------------------------------------------
// command format:
// size: sizeof(uint32_t)
// data: audio_mode_e
//--------------------------------------------------------------------------------------------------
// reply format:
// size: 0
// data: N/A
//==================================================================================================
// command: EFFECT_CMD_FIRST_PROPRIETARY
//--------------------------------------------------------------------------------------------------
// description:
// All proprietary effect commands must use command codes above this value. The size and format of
// command and response fields is free in this case
//==================================================================================================
// Audio buffer descriptor used by process(), bufferProvider() functions and buffer_config_t
// structure. Multi-channel audio is always interleaved. The channel order is from LSB to MSB with
// regard to the channel mask definition in audio_channels_e e.g :
// Stereo: left, right
// 5 point 1: front left, front right, front center, low frequency, back left, back right
// The buffer size is expressed in frame count, a frame being composed of samples for all
// channels at a given time. Frame size for unspecified format (AUDIO_FORMAT_OTHER) is 8 bit by
// definition
struct audio_buffer_s {
size_t frameCount; // number of frames in buffer
union {
void* raw; // raw pointer to start of buffer
int32_t* s32; // pointer to signed 32 bit data at start of buffer
int16_t* s16; // pointer to signed 16 bit data at start of buffer
uint8_t* u8; // pointer to unsigned 8 bit data at start of buffer
};
};
// The buffer_provider_s structure contains functions that can be used
// by the effect engine process() function to query and release input
// or output audio buffer.
// The getBuffer() function is called to retrieve a buffer where data
// should read from or written to by process() function.
// The releaseBuffer() function MUST be called when the buffer retrieved
// with getBuffer() is not needed anymore.
// The process function should use the buffer provider mechanism to retrieve
// input or output buffer if the inBuffer or outBuffer passed as argument is NULL
// and the buffer configuration (buffer_config_t) given by the EFFECT_CMD_CONFIGURE
// command did not specify an audio buffer.
typedef int32_t (* buffer_function_t)(void *cookie, audio_buffer_t *buffer);
typedef struct buffer_provider_s {
buffer_function_t getBuffer; // retrieve next buffer
buffer_function_t releaseBuffer; // release used buffer
void *cookie; // for use by client of buffer provider functions
} buffer_provider_t;
// The buffer_config_s structure specifies the input or output audio format
// to be used by the effect engine. It is part of the effect_config_t
// structure that defines both input and output buffer configurations and is
// passed by the EFFECT_CMD_CONFIGURE command.
typedef struct buffer_config_s {
audio_buffer_t buffer; // buffer for use by process() function if not passed explicitly
uint32_t samplingRate; // sampling rate
uint32_t channels; // channel mask (see audio_channels_e)
buffer_provider_t bufferProvider; // buffer provider
uint8_t format; // Audio format (see audio_format_e)
uint8_t accessMode; // read/write or accumulate in buffer (effect_buffer_access_e)
uint16_t mask; // indicates which of the above fields is valid
} buffer_config_t;
// Sample format
enum audio_format_e {
SAMPLE_FORMAT_PCM_S15, // PCM signed 16 bits
SAMPLE_FORMAT_PCM_U8, // PCM unsigned 8 bits
SAMPLE_FORMAT_PCM_S7_24, // PCM signed 7.24 fixed point representation
SAMPLE_FORMAT_OTHER // other format (e.g. compressed)
};
// Channel mask
enum audio_channels_e {
CHANNEL_FRONT_LEFT = 0x1, // front left channel
CHANNEL_FRONT_RIGHT = 0x2, // front right channel
CHANNEL_FRONT_CENTER = 0x4, // front center channel
CHANNEL_LOW_FREQUENCY = 0x8, // low frequency channel
CHANNEL_BACK_LEFT = 0x10, // back left channel
CHANNEL_BACK_RIGHT = 0x20, // back right channel
CHANNEL_FRONT_LEFT_OF_CENTER = 0x40, // front left of center channel
CHANNEL_FRONT_RIGHT_OF_CENTER = 0x80, // front right of center channel
CHANNEL_BACK_CENTER = 0x100, // back center channel
CHANNEL_MONO = CHANNEL_FRONT_LEFT,
CHANNEL_STEREO = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT),
CHANNEL_QUAD = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT |
CHANNEL_BACK_LEFT | CHANNEL_BACK_RIGHT),
CHANNEL_SURROUND = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT |
CHANNEL_FRONT_CENTER | CHANNEL_BACK_CENTER),
CHANNEL_5POINT1 = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT |
CHANNEL_FRONT_CENTER | CHANNEL_LOW_FREQUENCY | CHANNEL_BACK_LEFT | CHANNEL_BACK_RIGHT),
CHANNEL_7POINT1 = (CHANNEL_FRONT_LEFT | CHANNEL_FRONT_RIGHT |
CHANNEL_FRONT_CENTER | CHANNEL_LOW_FREQUENCY | CHANNEL_BACK_LEFT | CHANNEL_BACK_RIGHT |
CHANNEL_FRONT_LEFT_OF_CENTER | CHANNEL_FRONT_RIGHT_OF_CENTER),
};
// Render device
enum audio_device_e {
DEVICE_EARPIECE = 0x1, // earpiece
DEVICE_SPEAKER = 0x2, // speaker
DEVICE_WIRED_HEADSET = 0x4, // wired headset, with microphone
DEVICE_WIRED_HEADPHONE = 0x8, // wired headphone, without microphone
DEVICE_BLUETOOTH_SCO = 0x10, // generic bluetooth SCO
DEVICE_BLUETOOTH_SCO_HEADSET = 0x20, // bluetooth SCO headset
DEVICE_BLUETOOTH_SCO_CARKIT = 0x40, // bluetooth SCO car kit
DEVICE_BLUETOOTH_A2DP = 0x80, // generic bluetooth A2DP
DEVICE_BLUETOOTH_A2DP_HEADPHONES = 0x100, // bluetooth A2DP headphones
DEVICE_BLUETOOTH_A2DP_SPEAKER = 0x200, // bluetooth A2DP speakers
DEVICE_AUX_DIGITAL = 0x400, // digital output
DEVICE_EXTERNAL_SPEAKER = 0x800 // external speaker (stereo and High quality)
};
// Audio mode
enum audio_mode_e {
AUDIO_MODE_NORMAL, // device idle
AUDIO_MODE_RINGTONE, // device ringing
AUDIO_MODE_IN_CALL // audio call connected (VoIP or telephony)
};
// Values for "accessMode" field of buffer_config_t:
// overwrite, read only, accumulate (read/modify/write)
enum effect_buffer_access_e {
EFFECT_BUFFER_ACCESS_WRITE,
EFFECT_BUFFER_ACCESS_READ,
EFFECT_BUFFER_ACCESS_ACCUMULATE
};
// Values for bit field "mask" in buffer_config_t. If a bit is set, the corresponding field
// in buffer_config_t must be taken into account when executing the EFFECT_CMD_CONFIGURE command
#define EFFECT_CONFIG_BUFFER 0x0001 // buffer field must be taken into account
#define EFFECT_CONFIG_SMP_RATE 0x0002 // samplingRate field must be taken into account
#define EFFECT_CONFIG_CHANNELS 0x0004 // channels field must be taken into account
#define EFFECT_CONFIG_FORMAT 0x0008 // format field must be taken into account
#define EFFECT_CONFIG_ACC_MODE 0x0010 // accessMode field must be taken into account
#define EFFECT_CONFIG_PROVIDER 0x0020 // bufferProvider field must be taken into account
#define EFFECT_CONFIG_ALL (EFFECT_CONFIG_BUFFER | EFFECT_CONFIG_SMP_RATE | \
EFFECT_CONFIG_CHANNELS | EFFECT_CONFIG_FORMAT | \
EFFECT_CONFIG_ACC_MODE | EFFECT_CONFIG_PROVIDER)
// effect_config_s structure describes the format of the pCmdData argument of EFFECT_CMD_CONFIGURE
// command to configure audio parameters and buffers for effect engine input and output.
typedef struct effect_config_s {
buffer_config_t inputCfg;
buffer_config_t outputCfg;;
} effect_config_t;
// effect_param_s structure describes the format of the pCmdData argument of EFFECT_CMD_SET_PARAM
// command and pCmdData and pReplyData of EFFECT_CMD_GET_PARAM command.
// psize and vsize represent the actual size of parameter and value.
//
// NOTE: the start of value field inside the data field is always on a 32 bit boundary:
//
// +-----------+
// | status | sizeof(int)
// +-----------+
// | psize | sizeof(int)
// +-----------+
// | vsize | sizeof(int)
// +-----------+
// | | | |
// ~ parameter ~ > psize |
// | | | > ((psize - 1)/sizeof(int) + 1) * sizeof(int)
// +-----------+ |
// | padding | |
// +-----------+
// | | |
// ~ value ~ > vsize
// | | |
// +-----------+
typedef struct effect_param_s {
int32_t status; // Transaction status (unused for command, used for reply)
uint32_t psize; // Parameter size
uint32_t vsize; // Value size
char data[]; // Start of Parameter + Value data
} effect_param_t;
/////////////////////////////////////////////////
// Effect library interface
/////////////////////////////////////////////////
// An effect library is required to implement and expose the following functions
// to enable effect enumeration and instantiation. The name of these functions must be as
// specified here as the effect framework will get the function address with dlsym():
//
// - effect_QueryNumberEffects_t EffectQueryNumberEffects;
// - effect_QueryEffect_t EffectQueryEffect;
// - effect_CreateEffect_t EffectCreate;
// - effect_ReleaseEffect_t EffectRelease;
////////////////////////////////////////////////////////////////////////////////
//
// Function: EffectQueryNumberEffects
//
// Description: Returns the number of different effects exposed by the
// library. Each effect must have a unique effect uuid (see
// effect_descriptor_t). This function together with EffectQueryEffect()
// is used to enumerate all effects present in the library.
//
// Input/Output:
// pNumEffects: address where the number of effects should be returned.
//
// Output:
// returned value: 0 successful operation.
// -ENODEV library failed to initialize
// -EINVAL invalid pNumEffects
// *pNumEffects: updated with number of effects in library
//
////////////////////////////////////////////////////////////////////////////////
typedef int32_t (*effect_QueryNumberEffects_t)(uint32_t *pNumEffects);
////////////////////////////////////////////////////////////////////////////////
//
// Function: EffectQueryEffect
//
// Description: Returns the descriptor of the effect engine which index is
// given as first argument.
// See effect_descriptor_t for details on effect descriptors.
// This function together with EffectQueryNumberEffects() is used to enumerate all
// effects present in the library. The enumeration sequence is:
// EffectQueryNumberEffects(&num_effects);
// for (i = 0; i < num_effects; i++)
// EffectQueryEffect(i,...);
//
// Input/Output:
// index: index of the effect
// pDescriptor: address where to return the effect descriptor.
//
// Output:
// returned value: 0 successful operation.
// -ENODEV library failed to initialize
// -EINVAL invalid pDescriptor or index
// -ENOSYS effect list has changed since last execution of
// EffectQueryNumberEffects()
// -ENOENT no more effect available
// *pDescriptor: updated with the effect descriptor.
//
////////////////////////////////////////////////////////////////////////////////
typedef int32_t (*effect_QueryEffect_t)(uint32_t index,
effect_descriptor_t *pDescriptor);
////////////////////////////////////////////////////////////////////////////////
//
// Function: EffectCreate
//
// Description: Creates an effect engine of the specified type and returns an
// effect control interface on this engine. The function will allocate the
// resources for an instance of the requested effect engine and return
// a handle on the effect control interface.
//
// Input:
// uuid: pointer to the effect uuid.
// sessionId: audio session to which this effect instance will be attached. All effects
// created with the same session ID are connected in series and process the same signal
// stream. Knowing that two effects are part of the same effect chain can help the
// library implement some kind of optimizations.
// ioId: identifies the output or input stream this effect is directed to at audio HAL.
// For future use especially with tunneled HW accelerated effects
//
// Input/Output:
// pInterface: address where to return the effect interface.
//
// Output:
// returned value: 0 successful operation.
// -ENODEV library failed to initialize
// -EINVAL invalid pEffectUuid or pInterface
// -ENOENT no effect with this uuid found
// *pInterface: updated with the effect interface handle.
//
////////////////////////////////////////////////////////////////////////////////
typedef int32_t (*effect_CreateEffect_t)(effect_uuid_t *uuid,
int32_t sessionId,
int32_t ioId,
effect_interface_t *pInterface);
////////////////////////////////////////////////////////////////////////////////
//
// Function: EffectRelease
//
// Description: Releases the effect engine whose handle is given as argument.
// All resources allocated to this particular instance of the effect are
// released.
//
// Input:
// interface: handle on the effect interface to be released.
//
// Output:
// returned value: 0 successful operation.
// -ENODEV library failed to initialize
// -EINVAL invalid interface handle
//
////////////////////////////////////////////////////////////////////////////////
typedef int32_t (*effect_ReleaseEffect_t)(effect_interface_t interface);
#if __cplusplus
} // extern "C"
#endif
#endif /*ANDROID_EFFECTAPI_H_*/

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/*
* Copyright (C) 2007 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.
*/
#ifndef ANDROID_IAUDIOFLINGER_H
#define ANDROID_IAUDIOFLINGER_H
#include <stdint.h>
#include <sys/types.h>
#include <unistd.h>
#include <utils/RefBase.h>
#include <utils/Errors.h>
#include <binder/IInterface.h>
#include "IAudioTrack.h"
#include "IAudioRecord.h"
#include "IAudioFlingerClient.h"
#include "EffectApi.h"
#include "IEffect.h"
#include "IEffectClient.h"
#include <utils/String8.h>
namespace android {
// ----------------------------------------------------------------------------
class IAudioFlinger : public IInterface
{
public:
DECLARE_META_INTERFACE(AudioFlinger);
/* create an audio track and registers it with AudioFlinger.
* return null if the track cannot be created.
*/
virtual sp<IAudioTrack> createTrack(
pid_t pid,
int streamType,
uint32_t sampleRate,
int format,
int channelCount,
int frameCount,
uint32_t flags,
const sp<IMemory>& sharedBuffer,
int output,
int *sessionId,
status_t *status) = 0;
virtual sp<IAudioRecord> openRecord(
pid_t pid,
int input,
uint32_t sampleRate,
int format,
int channelCount,
int frameCount,
uint32_t flags,
int *sessionId,
status_t *status) = 0;
/* query the audio hardware state. This state never changes,
* and therefore can be cached.
*/
virtual uint32_t sampleRate(int output) const = 0;
virtual int channelCount(int output) const = 0;
virtual int format(int output) const = 0;
virtual size_t frameCount(int output) const = 0;
virtual uint32_t latency(int output) const = 0;
/* set/get the audio hardware state. This will probably be used by
* the preference panel, mostly.
*/
virtual status_t setMasterVolume(float value) = 0;
virtual status_t setMasterMute(bool muted) = 0;
virtual float masterVolume() const = 0;
virtual bool masterMute() const = 0;
/* set/get stream type state. This will probably be used by
* the preference panel, mostly.
*/
virtual status_t setStreamVolume(int stream, float value, int output) = 0;
virtual status_t setStreamMute(int stream, bool muted) = 0;
virtual float streamVolume(int stream, int output) const = 0;
virtual bool streamMute(int stream) const = 0;
// set audio mode
virtual status_t setMode(int mode) = 0;
// mic mute/state
virtual status_t setMicMute(bool state) = 0;
virtual bool getMicMute() const = 0;
// is any track active on this stream?
virtual bool isStreamActive(int stream) const = 0;
virtual status_t setParameters(int ioHandle, const String8& keyValuePairs) = 0;
virtual String8 getParameters(int ioHandle, const String8& keys) = 0;
// register a current process for audio output change notifications
virtual void registerClient(const sp<IAudioFlingerClient>& client) = 0;
// retrieve the audio recording buffer size
virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount) = 0;
virtual int openOutput(uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t *pLatencyMs,
uint32_t flags) = 0;
virtual int openDuplicateOutput(int output1, int output2) = 0;
virtual status_t closeOutput(int output) = 0;
virtual status_t suspendOutput(int output) = 0;
virtual status_t restoreOutput(int output) = 0;
virtual int openInput(uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t acoustics) = 0;
virtual status_t closeInput(int input) = 0;
virtual status_t setStreamOutput(uint32_t stream, int output) = 0;
virtual status_t setVoiceVolume(float volume) = 0;
virtual status_t getRenderPosition(uint32_t *halFrames, uint32_t *dspFrames, int output) = 0;
virtual unsigned int getInputFramesLost(int ioHandle) = 0;
virtual int newAudioSessionId() = 0;
virtual status_t loadEffectLibrary(const char *libPath, int *handle) = 0;
virtual status_t unloadEffectLibrary(int handle) = 0;
virtual status_t queryNumberEffects(uint32_t *numEffects) = 0;
virtual status_t queryEffect(uint32_t index, effect_descriptor_t *pDescriptor) = 0;
virtual status_t getEffectDescriptor(effect_uuid_t *pEffectUUID, effect_descriptor_t *pDescriptor) = 0;
virtual sp<IEffect> createEffect(pid_t pid,
effect_descriptor_t *pDesc,
const sp<IEffectClient>& client,
int32_t priority,
int output,
int sessionId,
status_t *status,
int *id,
int *enabled) = 0;
virtual status_t moveEffects(int session, int srcOutput, int dstOutput) = 0;
};
// ----------------------------------------------------------------------------
class BnAudioFlinger : public BnInterface<IAudioFlinger>
{
public:
virtual status_t onTransact( uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_IAUDIOFLINGER_H

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/*
* Copyright (C) 2009 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.
*/
#ifndef ANDROID_IAUDIOFLINGERCLIENT_H
#define ANDROID_IAUDIOFLINGERCLIENT_H
#include <utils/RefBase.h>
#include <binder/IInterface.h>
#include <utils/KeyedVector.h>
namespace android {
// ----------------------------------------------------------------------------
class IAudioFlingerClient : public IInterface
{
public:
DECLARE_META_INTERFACE(AudioFlingerClient);
// Notifies a change of audio input/output configuration.
virtual void ioConfigChanged(int event, int ioHandle, void *param2) = 0;
};
// ----------------------------------------------------------------------------
class BnAudioFlingerClient : public BnInterface<IAudioFlingerClient>
{
public:
virtual status_t onTransact( uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_IAUDIOFLINGERCLIENT_H

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/*
* Copyright (C) 2007 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.
*/
#ifndef IAUDIORECORD_H_
#define IAUDIORECORD_H_
#include <stdint.h>
#include <sys/types.h>
#include <utils/RefBase.h>
#include <utils/Errors.h>
#include <binder/IInterface.h>
#include <binder/IMemory.h>
namespace android {
// ----------------------------------------------------------------------------
class IAudioRecord : public IInterface
{
public:
DECLARE_META_INTERFACE(AudioRecord);
/* After it's created the track is not active. Call start() to
* make it active. If set, the callback will start being called.
*/
virtual status_t start() = 0;
/* Stop a track. If set, the callback will cease being called and
* obtainBuffer will return an error. Buffers that are already released
* will be processed, unless flush() is called.
*/
virtual void stop() = 0;
/* get this tracks control block */
virtual sp<IMemory> getCblk() const = 0;
};
// ----------------------------------------------------------------------------
class BnAudioRecord : public BnInterface<IAudioRecord>
{
public:
virtual status_t onTransact( uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif /*IAUDIORECORD_H_*/

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/*
* Copyright (C) 2007 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.
*/
#ifndef ANDROID_IAUDIOTRACK_H
#define ANDROID_IAUDIOTRACK_H
#include <stdint.h>
#include <sys/types.h>
#include <utils/RefBase.h>
#include <utils/Errors.h>
#include <binder/IInterface.h>
#include <binder/IMemory.h>
namespace android {
// ----------------------------------------------------------------------------
class IAudioTrack : public IInterface
{
public:
DECLARE_META_INTERFACE(AudioTrack);
/* After it's created the track is not active. Call start() to
* make it active. If set, the callback will start being called.
*/
virtual status_t start() = 0;
/* Stop a track. If set, the callback will cease being called and
* obtainBuffer will return an error. Buffers that are already released
* will be processed, unless flush() is called.
*/
virtual void stop() = 0;
/* flush a stopped track. All pending buffers are discarded.
* This function has no effect if the track is not stoped.
*/
virtual void flush() = 0;
/* mute or unmutes this track.
* While mutted, the callback, if set, is still called.
*/
virtual void mute(bool) = 0;
/* Pause a track. If set, the callback will cease being called and
* obtainBuffer will return an error. Buffers that are already released
* will be processed, unless flush() is called.
*/
virtual void pause() = 0;
/* Attach track auxiliary output to specified effect. Use effectId = 0
* to detach track from effect.
*/
virtual status_t attachAuxEffect(int effectId) = 0;
/* get this tracks control block */
virtual sp<IMemory> getCblk() const = 0;
};
// ----------------------------------------------------------------------------
class BnAudioTrack : public BnInterface<IAudioTrack>
{
public:
virtual status_t onTransact( uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_IAUDIOTRACK_H

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/*
* Copyright (C) 2010 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.
*/
#ifndef ANDROID_IEFFECT_H
#define ANDROID_IEFFECT_H
#include <utils/RefBase.h>
#include <binder/IInterface.h>
#include <binder/Parcel.h>
#include <binder/IMemory.h>
namespace android {
class IEffect: public IInterface
{
public:
DECLARE_META_INTERFACE(Effect);
virtual status_t enable() = 0;
virtual status_t disable() = 0;
virtual status_t command(uint32_t cmdCode,
uint32_t cmdSize,
void *pCmdData,
uint32_t *pReplySize,
void *pReplyData) = 0;
virtual void disconnect() = 0;
virtual sp<IMemory> getCblk() const = 0;
};
// ----------------------------------------------------------------------------
class BnEffect: public BnInterface<IEffect>
{
public:
virtual status_t onTransact( uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
}; // namespace android
#endif // ANDROID_IEFFECT_H

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/*
* Copyright (C) 2010 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.
*/
#ifndef ANDROID_IEFFECTCLIENT_H
#define ANDROID_IEFFECTCLIENT_H
#include <utils/RefBase.h>
#include <binder/IInterface.h>
#include <binder/Parcel.h>
#include <binder/IMemory.h>
namespace android {
class IEffectClient: public IInterface
{
public:
DECLARE_META_INTERFACE(EffectClient);
virtual void controlStatusChanged(bool controlGranted) = 0;
virtual void enableStatusChanged(bool enabled) = 0;
virtual void commandExecuted(uint32_t cmdCode,
uint32_t cmdSize,
void *pCmdData,
uint32_t replySize,
void *pReplyData) = 0;
};
// ----------------------------------------------------------------------------
class BnEffectClient: public BnInterface<IEffectClient>
{
public:
virtual status_t onTransact( uint32_t code,
const Parcel& data,
Parcel* reply,
uint32_t flags = 0);
};
}; // namespace android
#endif // ANDROID_IEFFECTCLIENT_H