mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-30 13:41:48 +00:00
146 lines
3.9 KiB
C
146 lines
3.9 KiB
C
/*
|
|
* Siren Encoder/Decoder library
|
|
*
|
|
* @author: Youness Alaoui <kakaroto@kakaroto.homelinux.net>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
|
|
#ifndef _SIREN_COMMON_H
|
|
#define _SIREN_COMMON_H
|
|
|
|
typedef struct {
|
|
unsigned int RiffId;
|
|
unsigned int RiffSize;
|
|
} RiffHeader;
|
|
|
|
typedef struct {
|
|
unsigned short Format;
|
|
unsigned short Channels;
|
|
unsigned int SampleRate;
|
|
unsigned int ByteRate;
|
|
unsigned short BlockAlign;
|
|
unsigned short BitsPerSample;
|
|
} FmtChunk;
|
|
|
|
|
|
typedef struct {
|
|
FmtChunk fmt;
|
|
unsigned short ExtraSize;
|
|
unsigned short DctLength;
|
|
} SirenFmtChunk;
|
|
|
|
typedef struct {
|
|
RiffHeader riff;
|
|
unsigned int WaveId;
|
|
|
|
unsigned int FmtId;
|
|
unsigned int FmtSize;
|
|
|
|
SirenFmtChunk fmt;
|
|
|
|
unsigned int FactId;
|
|
unsigned int FactSize;
|
|
unsigned int Samples;
|
|
|
|
unsigned int DataId;
|
|
unsigned int DataSize;
|
|
} SirenWavHeader;
|
|
|
|
typedef struct {
|
|
RiffHeader riff;
|
|
unsigned int WaveId;
|
|
|
|
unsigned int FmtId;
|
|
unsigned int FmtSize;
|
|
|
|
FmtChunk fmt;
|
|
|
|
unsigned int FactId;
|
|
unsigned int FactSize;
|
|
unsigned int Samples;
|
|
|
|
unsigned int DataId;
|
|
unsigned int DataSize;
|
|
} PCMWavHeader;
|
|
|
|
#define RIFF_ID 0x46464952
|
|
#define WAVE_ID 0x45564157
|
|
#define FMT__ID 0x20746d66
|
|
#define DATA_ID 0x61746164
|
|
#define FACT_ID 0x74636166
|
|
|
|
|
|
extern int region_size;
|
|
extern float region_size_inverse;
|
|
extern float standard_deviation[64];
|
|
extern float deviation_inverse[64];
|
|
extern float region_power_table_boundary[63];
|
|
extern int expected_bits_table[8];
|
|
extern int vector_dimension[8];
|
|
extern int number_of_vectors[8];
|
|
extern float dead_zone[8];
|
|
extern int max_bin[8];
|
|
extern float step_size[8];
|
|
extern float step_size_inverse[8];
|
|
|
|
|
|
|
|
extern void siren_init(void);
|
|
extern int categorize_regions(int number_of_regions, int number_of_available_bits, int *absolute_region_power_index, int *power_categories, int *category_balance);
|
|
extern int GetSirenCodecInfo(int flag, int sample_rate, int *number_of_coefs, int *sample_rate_bits, int *rate_control_bits, int *rate_control_possibilities, int *checksum_bits, int *esf_adjustment, int *scale_factor, int *number_of_regions, int *sample_rate_code, int *bits_per_frame );
|
|
|
|
|
|
#ifdef __BIG_ENDIAN__
|
|
|
|
#define POW_2_8 256
|
|
#define POW_2_16 65536
|
|
#define POW_2_24 16777216
|
|
|
|
#define IDX(val, i) ((unsigned int) ((unsigned char *) &val)[i])
|
|
|
|
|
|
|
|
#define ME_FROM_LE16(val) ( (unsigned short) ( IDX(val, 0) + IDX(val, 1) * 256 ))
|
|
#define ME_FROM_LE32(val) ( (unsigned int) (IDX(val, 0) + IDX(val, 1) * 256 + \
|
|
IDX(val, 2) * 65536 + IDX(val, 3) * 16777216))
|
|
|
|
|
|
#define ME_TO_LE16(val) ( (unsigned short) ( \
|
|
(((unsigned short)val % 256) & 0xff) << 8 | \
|
|
((((unsigned short)val / POW_2_8) % 256) & 0xff) ))
|
|
|
|
#define ME_TO_LE32(val) ( (unsigned int) ( \
|
|
((((unsigned int) val ) % 256) & 0xff) << 24 | \
|
|
((((unsigned int) val / POW_2_8 ) % 256) & 0xff) << 16| \
|
|
((((unsigned int) val / POW_2_16) % 256) & 0xff) << 8 | \
|
|
((((unsigned int) val / POW_2_24) % 256) & 0xff) ))
|
|
|
|
#else
|
|
|
|
#define ME_TO_LE16(val) ( (unsigned short) (val))
|
|
#define ME_TO_LE32(val) ( (unsigned int) (val))
|
|
#define ME_FROM_LE16(val) ( (unsigned short) (val))
|
|
#define ME_FROM_LE32(val) ( (unsigned int) (val))
|
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
#endif /* _SIREN_COMMON_H */
|
|
|