ALAudioPlayer API¶

Namespace : AL

#include <alproxies/alaudioplayerproxy.h>

Method list¶

As any module, this module inherits methods from ALModule API. It also has the following specific methods:

class ALAudioPlayerProxy¶

Methods¶

float ALAudioPlayerProxy::getCurrentPosition(const int& taskId)¶

Returns the position in seconds in the file currently played. The Id of the playing task will be returned when calling a play method (e.g. ALAudioPlayerProxy::play()) in a non-blocking manner. See below for an example in Python.

# -*- encoding: UTF-8 -*-

import sys
import time
from naoqi import ALProxy

if (len(sys.argv) < 2):
    print "Usage: 'python audioplayer_play.py IP [PORT]'"
    sys.exit(1)

IP = sys.argv[1]
PORT = 9559
if (len(sys.argv) > 2):
    PORT = sys.argv[2]
try:
    aup = ALProxy("ALAudioPlayer", IP, PORT)
except Exception,e:
    print "Could not create proxy to ALAudioPlayer"
    print "Error was: ",e
    sys.exit(1)

#plays a file and get the current position 5 seconds later
fileId = aup.post.playFile("/usr/share/naoqi/wav/random.wav")

time.sleep(5)

#currentPos should be near 5 secs
currentPos = aup.getCurrentPosition(fileId)

Parameters:	taskId – Id of the task handling the currently playing of the file
Returns:	Current position in seconds

float ALAudioPlayerProxy::getFileLength(const int& taskId)¶

Returns the length in second of the file that is currently played.

Parameters:	taskId – Id of the task handling the playing of the file
Returns:	Length of the file in seconds

std::vector<std::string> ALAudioPlayerProxy::getLoadedFilesIds()¶

Returns an array containing the task Ids corresponding to the currently loaded files. File can be loaded using ALAudioPlayerProxy::loadFile().

Returns:	Array of task Ids

std::vector<std::string> ALAudioPlayerProxy::getLoadedFilesNames()¶

Returns an array containing the filenames (absolute paths) of the currently loaded files. File can be loaded using ALAudioPlayerProxy::loadFile().

Returns:	Array of filenames

float ALAudioPlayerProxy::getMasterVolume()¶

Returns the master volume used by ALAudioPlayer for playback. This volume can be set by using ALAudioPlayerProxy::setMasterVolume(). This volume is independent of the system volume that can be set through ALAudioDevice.

Returns:	Volume [0.0 - 1.0]

float ALAudioPlayerProxy::getVolume(const int& taskId)¶

Returns the volume level at which the specified task should be played. This volume is independent of the master volume set with ALAudioPlayerProxy::setMasterVolume(). This task dependent volume can be set by using ALAudioPlayerProxy::setVolume().

Parameters:	taskId – Id of the task handling the playing of the file
Returns:	Volume - [0.0 - 1.0]

void ALAudioPlayerProxy::goTo(const int& taskId, const float& position)¶

Jumps to a given position in second in the specified file.

Parameters:	taskId – Id of the task handling the playing of the file position – Position in the file (in second)

# -*- encoding: UTF-8 -*-

import sys
import time
from naoqi import ALProxy

if (len(sys.argv) < 2):
    print "Usage: 'python audioplayer_goto.py IP [PORT]'"
    sys.exit(1)

IP = sys.argv[1]
PORT = 9559
if (len(sys.argv) > 2):
    PORT = sys.argv[2]
try:
    aup = ALProxy("ALAudioPlayer", IP, PORT)
except Exception,e:
    print "Could not create proxy to ALAudioPlayer"
    print "Error was: ",e
    sys.exit(1)

#Launchs the playing of a file, waits for 2 seconds, and goes to the 5th second
fileId = aup.post.playFile("/usr/share/naoqi/wav/random.wav")
time.sleep(1)
aup.goTo(fileId,2)

int ALAudioPlayerProxy::loadFile(const std::string& fileName)¶

PreLoads a file but does not play it yet. Preloading a file is a way to reduce the time necessary to actually start the playback when a “play” function is called. The playback of a loaded file can be started by calling ALAudioPlayerProxy::play().

Parameters:	fileName – Absolute path of the file to load
Returns:	Id of the task handling the playing of the file

void ALAudioPlayerProxy::pause(const int& taskId)¶

Pause the playback of the specified task. The pause can be resume by calling ALAudioPlayerProxy::play().

Parameters:	taskId – Id of the task handling the playing of the file

void ALAudioPlayerProxy::play(const int& taskId)¶

Starts the playback of the specified task.

Parameters:	taskId – Id of the task handling the playing of the file

# -*- encoding: UTF-8 -*-

import sys
import time
from naoqi import ALProxy

if (len(sys.argv) < 2):
    print "Usage: 'python audioplayer_play.py IP [PORT]'"
    sys.exit(1)

IP = sys.argv[1]
PORT = 9559
if (len(sys.argv) > 2):
    PORT = sys.argv[2]
try:
    aup = ALProxy("ALAudioPlayer", IP, PORT)
except Exception,e:
    print "Could not create proxy to ALAudioPlayer"
    print "Error was: ",e
    sys.exit(1)

#Loads a file and launchs the playing 5 seconds later
fileId = aup.loadFile("/usr/share/naoqi/wav/random.wav")
time.sleep(5)
aup.play(fileId)

void ALAudioPlayerProxy::play(const int& taskId, const float& volume, const float& pan)¶

Starts the playback of the specified task, with a specific volume and stereo panorama. This task has for example been created using ALAudioPlayerProxy::loadFile().

Parameters:	taskId – Id of the task handling the playing of the file volume – Volume of the sound file [0.0 - 1.0] pan – Stereo panorama requested (-1.0 : left / 1.0 : right)

# -*- encoding: UTF-8 -*-

import sys
import time
from naoqi import ALProxy

if (len(sys.argv) < 2):
    print "Usage: 'python audioplayer_play.py IP [PORT]'"
    sys.exit(1)

IP = sys.argv[1]
PORT = 9559
if (len(sys.argv) > 2):
    PORT = sys.argv[2]
try:
    aup = ALProxy("ALAudioPlayer", IP, PORT)
except Exception,e:
    print "Could not create proxy to ALAudioPlayer"
    print "Error was: ",e
    sys.exit(1)

#Loads a file and launchs the playing 5 seconds later
fileId = aup.loadFile("/usr/share/naoqi/wav/random.wav")
time.sleep(5)
aup.play(fileId)

void ALAudioPlayerProxy::playFile(const std::string& fileName)¶

Starts the playback of the specified file. This call is equivalent to calling successively ALAudioPlayerProxy::loadFile() and ALAudioPlayerProxy::play().

Parameters:	fileName – Absolute path of the file

# -*- encoding: UTF-8 -*-

import sys
import time
from naoqi import ALProxy

if (len(sys.argv) < 2):
    print "Usage: 'python audioplayer_playfile.py IP [PORT]'"
    sys.exit(1)

IP = sys.argv[1]
PORT = 9559
if (len(sys.argv) > 2):
    PORT = sys.argv[2]
try:
    aup = ALProxy("ALAudioPlayer", IP, PORT)
except Exception,e:
    print "Could not create proxy to ALAudioPlayer"
    print "Error was: ",e
    sys.exit(1)
    
#Launchs the playing of a file
aup.playFile("/usr/share/naoqi/wav/random.wav")

time.sleep(1.0)

#Launchs the playing of a file on the left speaker to a volume of 50%
aup.playFile("/usr/share/naoqi/wav/random.wav",0.5,-1.0)

void ALAudioPlayerProxy::playFile(const std::string& fileName, const float& volume, const float& pan)¶

Starts the playback of the specified file. This call is equivalent to calling successively ALAudioPlayerProxy::loadFile() and ALAudioPlayerProxy::play() with specific volume and pan.

Parameters:	fileName – Absolute path of the file volume – Volume of the sound file [0.0 - 1.0] pan – Stereo panorama requested (-1.0 : left / 1.0 : right / 0.0 : center)

# -*- encoding: UTF-8 -*-

import sys
import time
from naoqi import ALProxy

if (len(sys.argv) < 2):
    print "Usage: 'python audioplayer_playfile.py IP [PORT]'"
    sys.exit(1)

IP = sys.argv[1]
PORT = 9559
if (len(sys.argv) > 2):
    PORT = sys.argv[2]
try:
    aup = ALProxy("ALAudioPlayer", IP, PORT)
except Exception,e:
    print "Could not create proxy to ALAudioPlayer"
    print "Error was: ",e
    sys.exit(1)
    
#Launchs the playing of a file
aup.playFile("/usr/share/naoqi/wav/random.wav")

time.sleep(1.0)

#Launchs the playing of a file on the left speaker to a volume of 50%
aup.playFile("/usr/share/naoqi/wav/random.wav",0.5,-1.0)

void ALAudioPlayerProxy::playFileFromPosition(const std::string& fileName, const float& position)¶

Starts the playback of the specified file from a given position in second.

Parameters:	fileName – Absolute path of the file position – Position in second where the playing should begin

void ALAudioPlayerProxy::playFileFromPosition(const std::string& fileName, const float& position, const float& volume, const float& pan)¶

Starts the playback of the specified file from a given position in second with a given volume and pan.

Parameters:	fileName – Absolute path of the file position – Position in second where the playing should begin volume – Volume requested [0.0 - 1.0] pan – Stereo panorama requested (-1.0 : left / 1.0 : right / 0.0 : center)

void ALAudioPlayerProxy::playFileInLoop(const std::string& fileName)¶

Starts the playback of the specified file and loop. The playback can then be stopped by calling stop(const int & taskId).

Parameters:	fileName – Absolute path of the file

void ALAudioPlayerProxy::playFileInLoop(const std::string& fileName, const float& volume, const float& pan)¶

Starts the playback of the specified file and loop, with specific volume and pan. The playback can then be stopped by calling stop(const int & taskId).

Parameters:	fileName – Absolute path of the file volume – Volume requested [0.0 - 1.0] pan – Stereo panorama requested (-1.0 : left / 1.0 : right / 0.0 : center)

void ALAudioPlayerProxy::playInLoop(const int& taskId)¶

Starts the playback of the specified task and loop.

Parameters:	taskId – Id of the task handling the playing of the file

void ALAudioPlayerProxy::playInLoop(const int& taskId, const float& volume, const float& pan)¶

Plays a wav or mp3 file in loop, with specific volume and audio balance

Parameters:	taskId – Id of the task handling the playing of the file volume – Volume requested [0.0 - 1.0] pan – Stereo panorama requested (-1.0 : left / 1.0 : right / 0.0 : center)

void ALAudioPlayerProxy::playSine(const int& frequence, const int& gain, const int& pan, const float& duration)¶

Play a sine wave which the specified characteristics.

Parameters:	frequence – Frequence in Hertz gain – Volume between [0 - 100] pan – Stereo Pan set to either {-1,0,+1} duration – Duration of the sine wave in seconds

void ALAudioPlayerProxy::playWebStream(const std::string& streamName, const float& volume, const float& pan)¶

Starts the playback of a web audio stream.

Parameters:	streamName – Path of the web audio stream volume – Volume requested [0.0 - 1.0] pan – Stereo panorama requested (-1.0 : left / 1.0 : right / 0.0 : center)

void ALAudioPlayerProxy::setMasterVolume(const float& volume)¶

Sets the master volume used by ALAudioPlayer for playback. This volume is independent of the system volume that can be set through ALAudioDevice.

Parameters:	volume – Volume [0.0 - 1.0]

void ALAudioPlayerProxy::setPanorama(const float& pan)¶

Sets the stereo panorama for all the playback tasks handled by ALAudioPlayer.

Parameters:	pan – Stereo panorama requested (-1.0 : left / 1.0 : right / 0.0 : center)

void ALAudioPlayerProxy::setVolume(const int& taskId, const float& volume)¶

Sets the volume level at which the specified task should be played. This volume is independent of the master volume set with ALAudioPlayerProxy::setMasterVolume().

Parameters:	taskId – Id of the task handling the playing of the file volume – Volume - [0.0 - 1.0]

void ALAudioPlayerProxy::stopAll()¶: Stops all the files that are currently being played.

void ALAudioPlayerProxy::unloadAllFiles()¶: Unloads all the files already loaded.

void ALAudioPlayerProxy::unloadFile(const int& taskId)¶

Unloads a file previously loaded with ALAudioPlayerProxy::loadFile().

Parameters:	taskId – Id of the task handling the playing of the file

NAO Software 1.14.5 documentation

ALAudioPlayer API¶

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NAO Software 1.14.5 documentation

ALAudioPlayer API¶

Method list¶

Methods¶

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