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/* audiodevs: Abstraction layer for audio hardware & samples
Copyright (C) 2003-2004 Nemosoft Unv.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
For questions, remarks, patches, etc. for this program, the author can be
reached at camstream@smcc.demon.nl.
*/
#ifndef SOUNDATTRS_H
#define SOUNDATTRS_H
#include <sys/types.h>
#ifdef _WIN32
typedef char int8_t;
typedef unsigned char u_int8_t;
typedef __int16 int16_t;
typedef unsigned short u_int16_t;
typedef long int32_t;
typedef unsigned long u_int32_t;
#endif
struct SoundAttributes
{
/** The various sample formats */
enum Format
{
Unknown,
Signed8,
Signed16,
Signed24,
Signed32,
Unsigned8,
Unsigned16,
Unsigned24,
Unsigned32,
Float,
};
/** Designation per channel */
enum Position
{
NotUsed = -1,
Mono = 32,
Left, ///< Front left
Right, ///< Front right
Center,
LeftRear, ///< 5.1 sound
RightRear, ///< 5.1 sound
LFE, ///< Low Frequency Effects = subwoofer
LeftCenter, ///< 7.1 sound
RightCenter, ///< 7.1 sound
Top, ///< Overhead (does this get used at all?)
MaxPosition = 64
};
/** Some presets */
enum Preset
{
Speech, ///< 8 KHz, mono, 8 bits unsigned
Radio, ///< 22 KHz, mono, 16 bits signed
CD, ///< 44.1 KHz, stereo, 16 bits signed
DAT, ///< 48 KHz, stereo, 16 bits signed
Dolby51, ///< 5.1 surround, left/right/center/lrear/rrear/lfe, 16 bits signed
};
enum Channels
{
MaxChannel = 32
};
unsigned int SampleRate; ///< Frequency at which samples are taken
Format SampleFormat;
unsigned short Channels; ///< 1 to 32; see \ref ChannelPosition
Position ChannelPosition[MaxChannel]; ///< Per channel position info
SoundAttributes();
void Reset();
void SetPreset(Preset);
unsigned int FormatWidth() const;
unsigned int BytesPerSample() const;
bool operator ==(const SoundAttributes &comp) const;
bool operator !=(const SoundAttributes &comp) const;
static SoundAttributes GetFormat(Preset fmt);
};
#endif
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