guacamole-spice-protocol/protocols/rdp/include/wav_encoder.h
2012-11-01 14:25:34 -07:00

145 lines
3.8 KiB
C

/* ***** 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 libguac-client-rdp.
*
* The Initial Developer of the Original Code is
* Michael Jumper.
* Portions created by the Initial Developer are Copyright (C) 2010
* the Initial Developer. 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_WAV_ENCODER_H
#define __GUAC_WAV_ENCODER_H
#include "audio.h"
typedef struct wav_encoder_riff_header {
/**
* The RIFF chunk header, normally the string "RIFF".
*/
unsigned char chunk_id[4];
/**
* Size of the entire file, not including chunk_id or chunk_size.
*/
unsigned char chunk_size[4];
/**
* The format of this file, normally the string "WAVE".
*/
unsigned char chunk_format[4];
} wav_encoder_riff_header;
typedef struct wav_encoder_fmt_header {
/**
* ID of this subchunk. For the fmt subchunk, this should be "fmt ".
*/
unsigned char subchunk_id[4];
/**
* The size of the rest of this subchunk. For PCM, this will be 16.
*/
unsigned char subchunk_size[4];
/**
* Format of this subchunk. For PCM, this will be 1.
*/
unsigned char subchunk_format[2];
/**
* The number of channels in the PCM data.
*/
unsigned char subchunk_channels[2];
/**
* The sample rate of the PCM data.
*/
unsigned char subchunk_sample_rate[4];
/**
* The sample rate of the PCM data in bytes per second.
*/
unsigned char subchunk_byte_rate[4];
/**
* The number of bytes per sample.
*/
unsigned char subchunk_block_align[2];
/**
* The number of bits per sample.
*/
unsigned char subchunk_bps[2];
} wav_encoder_fmt_header;
typedef struct wav_encoder_state {
/**
* Arbitrary PCM data available for writing when the overall WAV is
* flushed.
*/
unsigned char* data_buffer;
/**
* The number of bytes currently present in the data buffer.
*/
int used;
/**
* The total number of bytes that can be written into the data buffer
* without requiring resizing.
*/
int length;
} wav_encoder_state;
typedef struct wav_encoder_data_header {
/**
* ID of this subchunk. For the data subchunk, this should be "data".
*/
unsigned char subchunk_id[4];
/**
* The number of bytes in the PCM data.
*/
unsigned char subchunk_size[4];
} wav_encoder_data_header;
extern audio_encoder* wav_encoder;
#endif