157 lines
3.5 KiB
C
157 lines
3.5 KiB
C
/* DecMPA decoding routines from Lame/HIP (Myers W. Carpenter)
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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For more information look at the file License.txt in this package.
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email: hazard_hd@users.sourceforge.net
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*/
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#ifndef MPG123_H_INCLUDED
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#define MPG123_H_INCLUDED
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#include <stdio.h>
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//#ifdef STDC_HEADERS
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# include <string.h>
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//#else
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/*# ifndef HAVE_STRCHR
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# define strchr index
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# define strrchr rindex
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# endif
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char *strchr (), *strrchr ();
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# ifndef HAVE_MEMCPY
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# define memcpy(d, s, n) bcopy ((s), (d), (n))
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# define memmove(d, s, n) bcopy ((s), (d), (n))
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# endif
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#endif*/
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#include <signal.h>
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#if defined(__riscos__) && defined(FPA10)
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#include "ymath.h"
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#else
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#include <math.h>
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#endif
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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#ifndef M_SQRT2
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#define M_SQRT2 1.41421356237309504880
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#endif
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#ifndef FALSE
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#define FALSE 0
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#endif
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#ifndef TRUE
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#define TRUE 1
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#endif
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#ifdef REAL_IS_FLOAT
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# define real float
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#elif defined(REAL_IS_LONG_DOUBLE)
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# define real long double
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#else
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# define real double
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#endif
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#define FALSE 0
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#define TRUE 1
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#define SBLIMIT 32
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#define SSLIMIT 18
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#define MPG_MD_STEREO 0
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#define MPG_MD_JOINT_STEREO 1
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#define MPG_MD_DUAL_CHANNEL 2
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#define MPG_MD_MONO 3
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#define MAXFRAMESIZE 1792
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/* AF: ADDED FOR LAYER1/LAYER2 */
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#define SCALE_BLOCK 12
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/* Pre Shift fo 16 to 8 bit converter table */
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#define AUSHIFT (3)
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struct frame {
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int stereo;
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int jsbound;
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int single;
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int lsf;
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int mpeg25;
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int header_change;
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int lay;
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int error_protection;
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int bitrate_index;
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int sampling_frequency;
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int padding;
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int extension;
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int mode;
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int mode_ext;
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int copyright;
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int original;
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int emphasis;
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int framesize; /* computed framesize */
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/* AF: ADDED FOR LAYER1/LAYER2 */
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#if defined(USE_LAYER_2) || defined(USE_LAYER_1)
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int II_sblimit;
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struct al_table2 *alloc;
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int down_sample_sblimit;
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int down_sample;
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#endif
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};
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struct gr_info_s {
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int scfsi;
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unsigned part2_3_length;
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unsigned big_values;
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unsigned scalefac_compress;
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unsigned block_type;
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unsigned mixed_block_flag;
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unsigned table_select[3];
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unsigned subblock_gain[3];
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unsigned maxband[3];
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unsigned maxbandl;
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unsigned maxb;
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unsigned region1start;
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unsigned region2start;
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unsigned preflag;
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unsigned scalefac_scale;
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unsigned count1table_select;
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real *full_gain[3];
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real *pow2gain;
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};
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struct III_sideinfo
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{
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unsigned main_data_begin;
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unsigned private_bits;
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struct {
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struct gr_info_s gr[2];
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} ch[2];
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};
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#endif
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