145 lines
3.8 KiB
C
145 lines
3.8 KiB
C
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is libguac.
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*
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* The Initial Developer of the Original Code is
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* Michael Jumper.
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* Portions created by the Initial Developer are Copyright (C) 2010
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef __GUAC_WAV_ENCODER_H
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#define __GUAC_WAV_ENCODER_H
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#include <guacamole/audio.h>
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typedef struct wav_encoder_riff_header {
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/**
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* The RIFF chunk header, normally the string "RIFF".
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*/
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unsigned char chunk_id[4];
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/**
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* Size of the entire file, not including chunk_id or chunk_size.
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*/
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unsigned char chunk_size[4];
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/**
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* The format of this file, normally the string "WAVE".
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*/
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unsigned char chunk_format[4];
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} wav_encoder_riff_header;
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typedef struct wav_encoder_fmt_header {
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/**
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* ID of this subchunk. For the fmt subchunk, this should be "fmt ".
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*/
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unsigned char subchunk_id[4];
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/**
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* The size of the rest of this subchunk. For PCM, this will be 16.
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*/
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unsigned char subchunk_size[4];
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/**
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* Format of this subchunk. For PCM, this will be 1.
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*/
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unsigned char subchunk_format[2];
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/**
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* The number of channels in the PCM data.
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*/
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unsigned char subchunk_channels[2];
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/**
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* The sample rate of the PCM data.
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*/
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unsigned char subchunk_sample_rate[4];
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/**
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* The sample rate of the PCM data in bytes per second.
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*/
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unsigned char subchunk_byte_rate[4];
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/**
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* The number of bytes per sample.
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*/
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unsigned char subchunk_block_align[2];
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/**
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* The number of bits per sample.
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*/
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unsigned char subchunk_bps[2];
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} wav_encoder_fmt_header;
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typedef struct wav_encoder_state {
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/**
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* Arbitrary PCM data available for writing when the overall WAV is
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* flushed.
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*/
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unsigned char* data_buffer;
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/**
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* The number of bytes currently present in the data buffer.
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*/
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int used;
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/**
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* The total number of bytes that can be written into the data buffer
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* without requiring resizing.
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*/
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int length;
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} wav_encoder_state;
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typedef struct wav_encoder_data_header {
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/**
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* ID of this subchunk. For the data subchunk, this should be "data".
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*/
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unsigned char subchunk_id[4];
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/**
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* The number of bytes in the PCM data.
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*/
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unsigned char subchunk_size[4];
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} wav_encoder_data_header;
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extern guac_audio_encoder* wav_encoder;
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#endif
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