diff options
Diffstat (limited to 'kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/waveheader.h')
-rw-r--r-- | kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/waveheader.h | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/waveheader.h b/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/waveheader.h new file mode 100644 index 00000000..6768d8f8 --- /dev/null +++ b/kopete/protocols/jabber/jingle/libjingle/talk/third_party/mediastreamer/waveheader.h @@ -0,0 +1,111 @@ +/* +linphone +Copyright (C) 2000 Simon MORLAT (simon.morlat@free.fr) + +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. +*/ + +/* the following code was taken from a free software utility that I don't remember the name. */ +/* sorry */ + + + +#include <ms.h> +#ifndef waveheader_h +#define waveheader_h + +typedef struct uint16scheme +{ + unsigned char lo_byte; + unsigned char hi_byte; +} uint16scheme_t; + +typedef struct uint32scheme +{ + guint16 lo_int; + guint16 hi_int; +} uint32scheme_t; + + +/* all integer in wav header must be read in least endian order */ +inline guint16 _readuint16(guint16 a) +{ + guint16 res; + uint16scheme_t *tmp1=(uint16scheme_t*)&a; + + ((uint16scheme_t *)(&res))->lo_byte=tmp1->hi_byte; + ((uint16scheme_t *)(&res))->hi_byte=tmp1->lo_byte; + return res; +} + +inline guint32 _readuint32(guint32 a) +{ + guint32 res; + uint32scheme_t *tmp1=(uint32scheme_t*)&a; + + ((uint32scheme_t *)(&res))->lo_int=_readuint16(tmp1->hi_int); + ((uint32scheme_t *)(&res))->hi_int=_readuint16(tmp1->lo_int); + return res; +} + +#ifdef WORDS_BIGENDIAN +#define le_uint32(a) (_readuint32((a))) +#define le_uint16(a) (_readuint16((a))) +#define le_int16(a) ( (gint16) _readuint16((guint16)((a))) ) +#else +#define le_uint32(a) (a) +#define le_uint16(a) (a) +#define le_int16(a) (a) +#endif + +typedef struct _riff_t { + char riff[4] ; /* "RIFF" (ASCII characters) */ + guint32 len ; /* Length of package (binary, little endian) */ + char wave[4] ; /* "WAVE" (ASCII characters) */ +} riff_t; + +/* The FORMAT chunk */ + +typedef struct _format_t { + char fmt[4] ; /* "fmt_" (ASCII characters) */ + guint32 len ; /* length of FORMAT chunk (always 0x10) */ + guint16 que ; /* Always 0x01 */ + guint16 channel ; /* Channel numbers (0x01 = mono, 0x02 = stereo) */ + guint32 rate ; /* Sample rate (binary, in Hz) */ + guint32 bps ; /* Bytes Per Second */ + guint16 bpsmpl ; /* bytes per sample: 1 = 8 bit Mono, + 2 = 8 bit Stereo/16 bit Mono, + 4 = 16 bit Stereo */ + guint16 bitpspl ; /* bits per sample */ +} format_t; + +/* The DATA chunk */ + +typedef struct _data_t { + char data[4] ; /* "data" (ASCII characters) */ + int len ; /* length of data */ +} data_t; + +typedef struct _wave_header_t +{ + riff_t riff_chunk; + format_t format_chunk; + data_t data_chunk; +} wave_header_t; + +#define wave_header_get_rate(header) le_uint32((header)->format_chunk.rate) +#define wave_header_get_channel(header) le_uint16((header)->format_chunk.channel) + +#endif |