guacamole-spice-protocol/protocols/vnc/include/pa_handlers.h

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is pa_handlers.
*
* The Initial Developers of the Original Code are
* Craig Hokanson <craig.hokanson@sv.cmu.edu>
* Sion Chaudhuri <sion.chaudhuri@sv.cmu.edu>
* Gio Perez <gio.perez@sv.cmu.edu>
* Portions created by the Initial Developer are Copyright (C) 2013
* the Initial Developers. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef __GUAC_VNC_PA_HANDLERS_H
#define __GUAC_VNC_PA_HANDLERS_H
/**
* The size of each data element in the audio buffer.
*/
#define BUF_DATA_SIZE 1024
/**
* The length of the audio buffer
*/
#define BUF_LENGTH 100
/**
* The number of samples per second of PCM data sent to this stream.
*/
#define SAMPLE_RATE 44100
/**
* The number of audio channels per sample of PCM data. Legal values are
* 1 or 2.
*/
#define CHANNELS 2
/**
* The number of bits per sample per channel for PCM data. Only 16 is supported.
*/
#define BPS 16
/**
* Minimum interval between two audio send instructions
*/
#define SEND_INTERVAL 500
/**
* Arguments for the read and send threads
*/
typedef struct audio_args {
audio_stream* audio;
buffer* audio_buffer;
} audio_args;
/**
* Allocates a new audio buffer that can be shared between the
* read and send threads
*/
buffer* guac_pa_buffer_alloc();
/**
* Frees up allocated resources for reading and sending audio data
* read and send threads
*/
void guac_pa_buffer_free(buffer* audio_buffer);
/**
* Reads audio data from Pulse Audio and inserts it into the
* audio buffer
*
* @param data arguments for the read audio thread
*/
void* guac_pa_read_audio(void* data);
/**
* Gets audio data from the audio buffer and sends it to
* guacamole
*
* @param data arguments for the send audio thread
*/
void* guac_pa_send_audio(void* data);
/**
* Sleep for the given number of milliseconds.
*
* @param millis The number of milliseconds to sleep.
*/
void guac_pa_sleep(int millis);
#endif