/* For information on usage and redistribution, and for a DISCLAIMER OF ALL * WARRANTIES, see the file, "LICENSE.txt," in this distribution. iem_mp3 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */ /* sigmp3play.c - Mpeg Layer III Player for PD Version:0.1 05-18-2000 written by Thomas Musil (musil_at_iem.kug.ac.at), Norbert Math (math_at_iem.kug.ac.at) IEM Graz debugged for windows 013-03-2003 This MPEG Player is based on the mpglib 0.2 by Michael Hipp which comes with mpg123-0.59r please see the README file for copyright notices! */ #ifdef _MSC_VER #pragma warning( disable : 4244 ) #pragma warning( disable : 4305 ) #endif #include "m_pd.h" #include "iemlib.h" #include #include #include #include #include #include #include #include #include #ifndef _WIN32 #include #include #endif #define IEM_MPEG1 #ifdef _WIN32 # undef WIN32 # define WIN32 # define M_PI 3.14159265358979323846 # define M_SQRT2 1.41421356237309504880 # define REAL_IS_FLOAT # define NEW_DCT9 # define random rand # define srandom srand #endif #ifdef REAL_IS_FLOAT # define real float #elif defined(REAL_IS_LONG_DOUBLE) # define real long double #else # define real double #endif #ifdef __GNUC__ #define INLINE inline #else #define INLINE #endif /* AUDIOBUFSIZE = n*64 with n=1,2,3 ... */ #define AUDIOBUFSIZE 16384 #define FALSE 0 #define TRUE 1 #define SBLIMIT 32 #define SSLIMIT 18 #define MPG_MD_STEREO 0 #define MPG_MD_JOINT_STEREO 1 #define MPG_MD_DUAL_CHANNEL 2 #define MPG_MD_MONO 3 #define MAXFRAMESIZE 1792 /* Pre Shift fo 16 to 8 bit converter table */ #define AUSHIFT (3) #define BOOL int #define MP3_EX -2 #define MP3_ERR -1 #define MP3_OK 0 #define MP3_NEED_MORE 1 #define WRITE_SAMPLE(samples,sum,clip) \ if( (sum) > 32767.0) { *(samples) = 0x7fff; (clip)++; } \ else if( (sum) < -32768.0) { *(samples) = -0x8000; (clip)++; } \ else { *(samples) = sum; } #define HDRCMPMASK 0xfffffd00 #define MY_MP3_MALLOC_IN_SIZE 16384 #define MY_MP3_MALLOC_IN_SIZE2 8192 #define MY_MP3_MALLOC_OUT_SIZE 65536 #define MY_MP3_MALLOC_FN 400 #define MY_MP3_CHSAMP_PER_FRAME 1152 struct iemmp3_frame { int stereo; int jsbound; int single; int lsf; int mpeg25; int header_change; int lay; int error_protection; int bitrate_index; int sampling_frequency; int padding; int extension; int mode; int mode_ext; int copyright; int original; int emphasis; int framesize; /* computed framesize */ }; struct iemmp3_gr_info_s { int scfsi; unsigned part2_3_length; unsigned big_values; unsigned scalefac_compress; unsigned block_type; unsigned mixed_block_flag; unsigned table_select[3]; unsigned subblock_gain[3]; unsigned maxband[3]; unsigned maxbandl; unsigned maxb; unsigned region1start; unsigned region2start; unsigned preflag; unsigned scalefac_scale; unsigned count1table_select; real *full_gain[3]; real *pow2gain; }; struct iemmp3_III_sideinfo { unsigned main_data_begin; unsigned private_bits; struct { struct iemmp3_gr_info_s gr[2]; } ch[2]; }; struct iemmp3_buf { unsigned char *pnt; long size; long pos; struct iemmp3_buf *next; struct iemmp3_buf *prev; }; struct iemmp3Struct { struct iemmp3_buf *head,*tail; int bsize; int framesize; int fsizeold; struct iemmp3_frame fr; unsigned char bsspace[2][MAXFRAMESIZE+512]; /* MAXFRAMESIZE */ real hybrid_block[2][2][SBLIMIT*SSLIMIT]; int hybrid_blc[2]; unsigned long header; int bsnum; real synth_buffs[2][2][0x110]; int synth_bo; }; struct iemmp3_bandInfoStruct { short longIdx[23]; short longDiff[22]; short shortIdx[14]; short shortDiff[13]; }; struct iemmp3_newHuff { unsigned int linbits; short *table; }; typedef struct _sigmp3play { t_object x_obj; float length_sec; int samp_per_frame; int frame_counter; int time1_bang0_handle; float time_factor; int *begframeseek; int curframeseek; int maxframeseek; char *filename; float offset_sec; int file_is_open; int play_state; int mp3_encode_size; int mp3_out_index; int file_size; int file_block_num; int file_remain; int mp_is_init; int mp3_ch; int mp3_sr; int mp3_byterate; int obj_sr; int obj_n; int down; float scale; FILE *fh; char *mp3inbuf; char *mp3outbuf; struct iemmp3Struct mp; t_clock *x_clock; t_outlet *x_bangout; t_outlet *x_floatout; t_canvas *x_canvas; } t_sigmp3play; static BOOL InitMP3 (struct iemmp3Struct *mp); static BOOL InitAgainMP3(struct iemmp3Struct *mp); static void ExitMP3 (struct iemmp3Struct *mp); static int decodeMP3 (struct iemmp3Struct *mp, char *in, int isize, char *out, int osize, int *done); static void make_decode_tables (long scaleval); static void init_layer3 (int down_sample_sblimit); static int decode_header (struct iemmp3_frame *fr,unsigned long newhead); static int do_layer3(struct iemmp3_frame *fr,unsigned char *pcm_sample,int *pcm_point,int *err); static int set_pointer(long backstep); static int synth_1to1_mono(real *bandPtr,unsigned char *samples,int *pnt); static int synth_1to1(real *bandPtr,int channel,unsigned char *out,int *pnt); static struct iemmp3_buf *addbuf(struct iemmp3Struct *mp,char *buf,int size); static void remove_buf(struct iemmp3Struct *mp); static int read_head(struct iemmp3Struct *mp); static int read_buf_byte(struct iemmp3Struct *mp,int *err); static int III_get_side_info_2(struct iemmp3_III_sideinfo *si,int stereo, int ms_stereo,long sfreq,int single); #ifdef IEM_MPEG1 static int III_get_side_info_1(struct iemmp3_III_sideinfo *si,int stereo,int ms_stereo,long sfreq,int single); static int III_get_scale_factors_1(int *scf,struct iemmp3_gr_info_s *gr_info); #endif static int III_get_scale_factors_2(int *scf,struct iemmp3_gr_info_s *gr_info,int i_stereo); static int III_dequantize_sample(real xr[SBLIMIT][SSLIMIT],int *scf,struct iemmp3_gr_info_s *gr_info,int sfreq,int part2bits); static void III_i_stereo(real xr_buf[2][SBLIMIT][SSLIMIT],int *scalefac,struct iemmp3_gr_info_s *gr_info,int sfreq,int ms_stereo,int lsf); static void III_antialias(real xr[SBLIMIT][SSLIMIT],struct iemmp3_gr_info_s *gr_info); static void III_hybrid(real fsIn[SBLIMIT][SSLIMIT],real tsOut[SSLIMIT][SBLIMIT],int ch,struct iemmp3_gr_info_s *gr_info); static void dct64(real *a,real *b,real *c); static void dct64_1(real *out0,real *out1,real *b1,real *b2,real *samples); static void dct36(real *inbuf,real *o1,real *o2,real *wintab,real *tsbuf); static void dct12(real *in,real *rawout1,real *rawout2,register real *wi,register real *ts); static unsigned int getbits(int number_of_bits); static unsigned int getbits_fast(int number_of_bits); static unsigned int get1bit(void); static void sigmp3play_tick(t_sigmp3play *x); struct iemmp3Struct *iemmp3_gmp; int iemmp3_tabsel_123[2][3][16] = { { {0,32,64,96,128,160,192,224,256,288,320,352,384,416,448,}, {0,32,48,56, 64, 80, 96,112,128,160,192,224,256,320,384,}, {0,32,40,48, 56, 64, 80, 96,112,128,160,192,224,256,320,} }, { {0,32,48,56,64,80,96,112,128,144,160,176,192,224,256,}, {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,}, {0,8,16,24,32,40,48,56,64,80,96,112,128,144,160,} } }; long iemmp3_freqs[9] = { 44100, 48000, 32000, 22050, 24000, 16000 , 11025 , 12000 , 8000 }; int iemmp3_bitindex; unsigned char *iemmp3_wordpointer; static real iemmp3_ispow[8207]; static real iemmp3_aa_ca[8],iemmp3_aa_cs[8]; static real iemmp3_COS1[12][6]; static real iemmp3_win[4][36]; static real iemmp3_win1[4][36]; static real iemmp3_gainpow2[256+118+4]; static real iemmp3_COS9[9]; static real iemmp3_COS6_1,iemmp3_COS6_2; static real iemmp3_tfcos36[9]; static real iemmp3_tfcos12[3]; int iemmp3_longLimit[9][23]; int iemmp3_shortLimit[9][14]; struct iemmp3_bandInfoStruct bandInfo[9] = { /* MPEG 1.0 */ { {0,4,8,12,16,20,24,30,36,44,52,62,74, 90,110,134,162,196,238,288,342,418,576}, {4,4,4,4,4,4,6,6,8, 8,10,12,16,20,24,28,34,42,50,54, 76,158}, {0,4*3,8*3,12*3,16*3,22*3,30*3,40*3,52*3,66*3, 84*3,106*3,136*3,192*3}, {4,4,4,4,6,8,10,12,14,18,22,30,56} } , { {0,4,8,12,16,20,24,30,36,42,50,60,72, 88,106,128,156,190,230,276,330,384,576}, {4,4,4,4,4,4,6,6,6, 8,10,12,16,18,22,28,34,40,46,54, 54,192}, {0,4*3,8*3,12*3,16*3,22*3,28*3,38*3,50*3,64*3, 80*3,100*3,126*3,192*3}, {4,4,4,4,6,6,10,12,14,16,20,26,66} } , { {0,4,8,12,16,20,24,30,36,44,54,66,82,102,126,156,194,240,296,364,448,550,576} , {4,4,4,4,4,4,6,6,8,10,12,16,20,24,30,38,46,56,68,84,102, 26} , {0,4*3,8*3,12*3,16*3,22*3,30*3,42*3,58*3,78*3,104*3,138*3,180*3,192*3} , {4,4,4,4,6,8,12,16,20,26,34,42,12} } , /* MPEG 2.0 */ { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576}, {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 } , {0,4*3,8*3,12*3,18*3,24*3,32*3,42*3,56*3,74*3,100*3,132*3,174*3,192*3} , {4,4,4,6,6,8,10,14,18,26,32,42,18 } } , { {0,6,12,18,24,30,36,44,54,66,80,96,114,136,162,194,232,278,330,394,464,540,576}, {6,6,6,6,6,6,8,10,12,14,16,18,22,26,32,38,46,52,64,70,76,36 } , {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,136*3,180*3,192*3} , {4,4,4,6,8,10,12,14,18,24,32,44,12 } } , { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576}, {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 }, {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,134*3,174*3,192*3}, {4,4,4,6,8,10,12,14,18,24,30,40,18 } } , /* MPEG 2.5 */ { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576} , {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54}, {0,12,24,36,54,78,108,144,186,240,312,402,522,576}, {4,4,4,6,8,10,12,14,18,24,30,40,18} }, { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576} , {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54}, {0,12,24,36,54,78,108,144,186,240,312,402,522,576}, {4,4,4,6,8,10,12,14,18,24,30,40,18} }, { {0,12,24,36,48,60,72,88,108,132,160,192,232,280,336,400,476,566,568,570,572,574,576}, {12,12,12,12,12,12,16,20,24,28,32,40,48,56,64,76,90,2,2,2,2,2}, {0, 24, 48, 72,108,156,216,288,372,480,486,492,498,576}, {8,8,8,12,16,20,24,28,36,2,2,2,26} } , }; static int iemmp3_mapbuf0[9][152]; static int iemmp3_mapbuf1[9][156]; static int iemmp3_mapbuf2[9][44]; static int *iemmp3_map[9][3]; static int *iemmp3_mapend[9][3]; static unsigned int iemmp3_n_slen2[512]; /* MPEG 2.0 slen for 'normal' mode */ static unsigned int iemmp3_slen2[256]; /* MPEG 2.0 slen for intensity stereo */ static real iemmp3_tan1_1[16],iemmp3_tan2_1[16],iemmp3_tan1_2[16],iemmp3_tan2_2[16]; static real iemmp3_pow1_1[2][16],iemmp3_pow2_1[2][16],iemmp3_pow1_2[2][16],iemmp3_pow2_2[2][16]; static int iemmp3_pretab1[22] = {0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,2,2,3,3,3,2,0}; static int iemmp3_pretab2[22] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; real iemmp3_decwin[512+32]; static real iemmp3_cos64[16],iemmp3_cos32[8],iemmp3_cos16[4],iemmp3_cos8[2],iemmp3_cos4[1]; real *iemmp3_pnts[] = { iemmp3_cos64,iemmp3_cos32,iemmp3_cos16,iemmp3_cos8,iemmp3_cos4 }; static long iemmp3_intwinbase[] = { 0, -1, -1, -1, -1, -1, -1, -2, -2, -2, -2, -3, -3, -4, -4, -5, -5, -6, -7, -7, -8, -9, -10, -11, -13, -14, -16, -17, -19, -21, -24, -26, -29, -31, -35, -38, -41, -45, -49, -53, -58, -63, -68, -73, -79, -85, -91, -97, -104, -111, -117, -125, -132, -139, -147, -154, -161, -169, -176, -183, -190, -196, -202, -208, -213, -218, -222, -225, -227, -228, -228, -227, -224, -221, -215, -208, -200, -189, -177, -163, -146, -127, -106, -83, -57, -29, 2, 36, 72, 111, 153, 197, 244, 294, 347, 401, 459, 519, 581, 645, 711, 779, 848, 919, 991, 1064, 1137, 1210, 1283, 1356, 1428, 1498, 1567, 1634, 1698, 1759, 1817, 1870, 1919, 1962, 2001, 2032, 2057, 2075, 2085, 2087, 2080, 2063, 2037, 2000, 1952, 1893, 1822, 1739, 1644, 1535, 1414, 1280, 1131, 970, 794, 605, 402, 185, -45, -288, -545, -814, -1095, -1388, -1692, -2006, -2330, -2663, -3004, -3351, -3705, -4063, -4425, -4788, -5153, -5517, -5879, -6237, -6589, -6935, -7271, -7597, -7910, -8209, -8491, -8755, -8998, -9219, -9416, -9585, -9727, -9838, -9916, -9959, -9966, -9935, -9863, -9750, -9592, -9389, -9139, -8840, -8492, -8092, -7640, -7134, -6574, -5959, -5288, -4561, -3776, -2935, -2037, -1082, -70, 998, 2122, 3300, 4533, 5818, 7154, 8540, 9975, 11455, 12980, 14548, 16155, 17799, 19478, 21189, 22929, 24694, 26482, 28289, 30112, 31947, 33791, 35640, 37489, 39336, 41176, 43006, 44821, 46617, 48390, 50137, 51853, 53534, 55178, 56778, 58333, 59838, 61289, 62684, 64019, 65290, 66494, 67629, 68692, 69679, 70590, 71420, 72169, 72835, 73415, 73908, 74313, 74630, 74856, 74992, 75038 }; static short iemmp3_tab0[] = { 0 }; static short iemmp3_tab1[] = { -5, -3, -1, 17, 1, 16, 0 }; static short iemmp3_tab2[] = { -15, -11, -9, -5, -3, -1, 34, 2, 18, -1, 33, 32, 17, -1, 1, 16, 0 }; static short iemmp3_tab3[] = { -13, -11, -9, -5, -3, -1, 34, 2, 18, -1, 33, 32, 16, 17, -1, 1, 0 }; static short iemmp3_tab5[] = { -29, -25, -23, -15, -7, -5, -3, -1, 51, 35, 50, 49, -3, -1, 19, 3, -1, 48, 34, -3, -1, 18, 33, -1, 2, 32, 17, -1, 1, 16, 0 }; static short iemmp3_tab6[] = { -25, -19, -13, -9, -5, -3, -1, 51, 3, 35, -1, 50, 48, -1, 19, 49, -3, -1, 34, 2, 18, -3, -1, 33, 32, 1, -1, 17, -1, 16, 0 }; static short iemmp3_tab7[] = { -69, -65, -57, -39, -29, -17, -11, -7, -3, -1, 85, 69, -1, 84, 83, -1, 53, 68, -3, -1, 37, 82, 21, -5, -1, 81, -1, 5, 52, -1, 80, -1, 67, 51, -5, -3, -1, 36, 66, 20, -1, 65, 64, -11, -7, -3, -1, 4, 35, -1, 50, 3, -1, 19, 49, -3, -1, 48, 34, 18, -5, -1, 33, -1, 2, 32, 17, -1, 1, 16, 0 }; static short iemmp3_tab8[] = { -65, -63, -59, -45, -31, -19, -13, -7, -5, -3, -1, 85, 84, 69, 83, -3, -1, 53, 68, 37, -3, -1, 82, 5, 21, -5, -1, 81, -1, 52, 67, -3, -1, 80, 51, 36, -5, -3, -1, 66, 20, 65, -3, -1, 4, 64, -1, 35, 50, -9, -7, -3, -1, 19, 49, -1, 3, 48, 34, -1, 2, 32, -1, 18, 33, 17, -3, -1, 1, 16, 0 }; static short iemmp3_tab9[] = { -63, -53, -41, -29, -19, -11, -5, -3, -1, 85, 69, 53, -1, 83, -1, 84, 5, -3, -1, 68, 37, -1, 82, 21, -3, -1, 81, 52, -1, 67, -1, 80, 4, -7, -3, -1, 36, 66, -1, 51, 64, -1, 20, 65, -5, -3, -1, 35, 50, 19, -1, 49, -1, 3, 48, -5, -3, -1, 34, 2, 18, -1, 33, 32, -3, -1, 17, 1, -1, 16, 0 }; static short iemmp3_tab10[] = { -125,-121,-111, -83, -55, -35, -21, -13, -7, -3, -1, 119, 103, -1, 118, 87, -3, -1, 117, 102, 71, -3, -1, 116, 86, -1, 101, 55, -9, -3, -1, 115, 70, -3, -1, 85, 84, 99, -1, 39, 114, -11, -5, -3, -1, 100, 7, 112, -1, 98, -1, 69, 53, -5, -1, 6, -1, 83, 68, 23, -17, -5, -1, 113, -1, 54, 38, -5, -3, -1, 37, 82, 21, -1, 81, -1, 52, 67, -3, -1, 22, 97, -1, 96, -1, 5, 80, -19, -11, -7, -3, -1, 36, 66, -1, 51, 4, -1, 20, 65, -3, -1, 64, 35, -1, 50, 3, -3, -1, 19, 49, -1, 48, 34, -7, -3, -1, 18, 33, -1, 2, 32, 17, -1, 1, 16, 0 }; static short iemmp3_tab11[] = { -121,-113, -89, -59, -43, -27, -17, -7, -3, -1, 119, 103, -1, 118, 117, -3, -1, 102, 71, -1, 116, -1, 87, 85, -5, -3, -1, 86, 101, 55, -1, 115, 70, -9, -7, -3, -1, 69, 84, -1, 53, 83, 39, -1, 114, -1, 100, 7, -5, -1, 113, -1, 23, 112, -3, -1, 54, 99, -1, 96, -1, 68, 37, -13, -7, -5, -3, -1, 82, 5, 21, 98, -3, -1, 38, 6, 22, -5, -1, 97, -1, 81, 52, -5, -1, 80, -1, 67, 51, -1, 36, 66, -15, -11, -7, -3, -1, 20, 65, -1, 4, 64, -1, 35, 50, -1, 19, 49, -5, -3, -1, 3, 48, 34, 33, -5, -1, 18, -1, 2, 32, 17, -3, -1, 1, 16, 0 }; static short iemmp3_tab12[] = { -115, -99, -73, -45, -27, -17, -9, -5, -3, -1, 119, 103, 118, -1, 87, 117, -3, -1, 102, 71, -1, 116, 101, -3, -1, 86, 55, -3, -1, 115, 85, 39, -7, -3, -1, 114, 70, -1, 100, 23, -5, -1, 113, -1, 7, 112, -1, 54, 99, -13, -9, -3, -1, 69, 84, -1, 68, -1, 6, 5, -1, 38, 98, -5, -1, 97, -1, 22, 96, -3, -1, 53, 83, -1, 37, 82, -17, -7, -3, -1, 21, 81, -1, 52, 67, -5, -3, -1, 80, 4, 36, -1, 66, 20, -3, -1, 51, 65, -1, 35, 50, -11, -7, -5, -3, -1, 64, 3, 48, 19, -1, 49, 34, -1, 18, 33, -7, -5, -3, -1, 2, 32, 0, 17, -1, 1, 16 }; static short iemmp3_tab13[] = { -509,-503,-475,-405,-333,-265,-205,-153,-115, -83, -53, -35, -21, -13, -9, -7, -5, -3, -1, 254, 252, 253, 237, 255, -1, 239, 223, -3, -1, 238, 207, -1, 222, 191, -9, -3, -1, 251, 206, -1, 220, -1, 175, 233, -1, 236, 221, -9, -5, -3, -1, 250, 205, 190, -1, 235, 159, -3, -1, 249, 234, -1, 189, 219, -17, -9, -3, -1, 143, 248, -1, 204, -1, 174, 158, -5, -1, 142, -1, 127, 126, 247, -5, -1, 218, -1, 173, 188, -3, -1, 203, 246, 111, -15, -7, -3, -1, 232, 95, -1, 157, 217, -3, -1, 245, 231, -1, 172, 187, -9, -3, -1, 79, 244, -3, -1, 202, 230, 243, -1, 63, -1, 141, 216, -21, -9, -3, -1, 47, 242, -3, -1, 110, 156, 15, -5, -3, -1, 201, 94, 171, -3, -1, 125, 215, 78, -11, -5, -3, -1, 200, 214, 62, -1, 185, -1, 155, 170, -1, 31, 241, -23, -13, -5, -1, 240, -1, 186, 229, -3, -1, 228, 140, -1, 109, 227, -5, -1, 226, -1, 46, 14, -1, 30, 225, -15, -7, -3, -1, 224, 93, -1, 213, 124, -3, -1, 199, 77, -1, 139, 184, -7, -3, -1, 212, 154, -1, 169, 108, -1, 198, 61, -37, -21, -9, -5, -3, -1, 211, 123, 45, -1, 210, 29, -5, -1, 183, -1, 92, 197, -3, -1, 153, 122, 195, -7, -5, -3, -1, 167, 151, 75, 209, -3, -1, 13, 208, -1, 138, 168, -11, -7, -3, -1, 76, 196, -1, 107, 182, -1, 60, 44, -3, -1, 194, 91, -3, -1, 181, 137, 28, -43, -23, -11, -5, -1, 193, -1, 152, 12, -1, 192, -1, 180, 106, -5, -3, -1, 166, 121, 59, -1, 179, -1, 136, 90, -11, -5, -1, 43, -1, 165, 105, -1, 164, -1, 120, 135, -5, -1, 148, -1, 119, 118, 178, -11, -3, -1, 27, 177, -3, -1, 11, 176, -1, 150, 74, -7, -3, -1, 58, 163, -1, 89, 149, -1, 42, 162, -47, -23, -9, -3, -1, 26, 161, -3, -1, 10, 104, 160, -5, -3, -1, 134, 73, 147, -3, -1, 57, 88, -1, 133, 103, -9, -3, -1, 41, 146, -3, -1, 87, 117, 56, -5, -1, 131, -1, 102, 71, -3, -1, 116, 86, -1, 101, 115, -11, -3, -1, 25, 145, -3, -1, 9, 144, -1, 72, 132, -7, -5, -1, 114, -1, 70, 100, 40, -1, 130, 24, -41, -27, -11, -5, -3, -1, 55, 39, 23, -1, 113, -1, 85, 7, -7, -3, -1, 112, 54, -1, 99, 69, -3, -1, 84, 38, -1, 98, 53, -5, -1, 129, -1, 8, 128, -3, -1, 22, 97, -1, 6, 96, -13, -9, -5, -3, -1, 83, 68, 37, -1, 82, 5, -1, 21, 81, -7, -3, -1, 52, 67, -1, 80, 36, -3, -1, 66, 51, 20, -19, -11, -5, -1, 65, -1, 4, 64, -3, -1, 35, 50, 19, -3, -1, 49, 3, -1, 48, 34, -3, -1, 18, 33, -1, 2, 32, -3, -1, 17, 1, 16, 0 }; static short iemmp3_tab15[] = { -495,-445,-355,-263,-183,-115, -77, -43, -27, -13, -7, -3, -1, 255, 239, -1, 254, 223, -1, 238, -1, 253, 207, -7, -3, -1, 252, 222, -1, 237, 191, -1, 251, -1, 206, 236, -7, -3, -1, 221, 175, -1, 250, 190, -3, -1, 235, 205, -1, 220, 159, -15, -7, -3, -1, 249, 234, -1, 189, 219, -3, -1, 143, 248, -1, 204, 158, -7, -3, -1, 233, 127, -1, 247, 173, -3, -1, 218, 188, -1, 111, -1, 174, 15, -19, -11, -3, -1, 203, 246, -3, -1, 142, 232, -1, 95, 157, -3, -1, 245, 126, -1, 231, 172, -9, -3, -1, 202, 187, -3, -1, 217, 141, 79, -3, -1, 244, 63, -1, 243, 216, -33, -17, -9, -3, -1, 230, 47, -1, 242, -1, 110, 240, -3, -1, 31, 241, -1, 156, 201, -7, -3, -1, 94, 171, -1, 186, 229, -3, -1, 125, 215, -1, 78, 228, -15, -7, -3, -1, 140, 200, -1, 62, 109, -3, -1, 214, 227, -1, 155, 185, -7, -3, -1, 46, 170, -1, 226, 30, -5, -1, 225, -1, 14, 224, -1, 93, 213, -45, -25, -13, -7, -3, -1, 124, 199, -1, 77, 139, -1, 212, -1, 184, 154, -7, -3, -1, 169, 108, -1, 198, 61, -1, 211, 210, -9, -5, -3, -1, 45, 13, 29, -1, 123, 183, -5, -1, 209, -1, 92, 208, -1, 197, 138, -17, -7, -3, -1, 168, 76, -1, 196, 107, -5, -1, 182, -1, 153, 12, -1, 60, 195, -9, -3, -1, 122, 167, -1, 166, -1, 192, 11, -1, 194, -1, 44, 91, -55, -29, -15, -7, -3, -1, 181, 28, -1, 137, 152, -3, -1, 193, 75, -1, 180, 106, -5, -3, -1, 59, 121, 179, -3, -1, 151, 136, -1, 43, 90, -11, -5, -1, 178, -1, 165, 27, -1, 177, -1, 176, 105, -7, -3, -1, 150, 74, -1, 164, 120, -3, -1, 135, 58, 163, -17, -7, -3, -1, 89, 149, -1, 42, 162, -3, -1, 26, 161, -3, -1, 10, 160, 104, -7, -3, -1, 134, 73, -1, 148, 57, -5, -1, 147, -1, 119, 9, -1, 88, 133, -53, -29, -13, -7, -3, -1, 41, 103, -1, 118, 146, -1, 145, -1, 25, 144, -7, -3, -1, 72, 132, -1, 87, 117, -3, -1, 56, 131, -1, 102, 71, -7, -3, -1, 40, 130, -1, 24, 129, -7, -3, -1, 116, 8, -1, 128, 86, -3, -1, 101, 55, -1, 115, 70, -17, -7, -3, -1, 39, 114, -1, 100, 23, -3, -1, 85, 113, -3, -1, 7, 112, 54, -7, -3, -1, 99, 69, -1, 84, 38, -3, -1, 98, 22, -3, -1, 6, 96, 53, -33, -19, -9, -5, -1, 97, -1, 83, 68, -1, 37, 82, -3, -1, 21, 81, -3, -1, 5, 80, 52, -7, -3, -1, 67, 36, -1, 66, 51, -1, 65, -1, 20, 4, -9, -3, -1, 35, 50, -3, -1, 64, 3, 19, -3, -1, 49, 48, 34, -9, -7, -3, -1, 18, 33, -1, 2, 32, 17, -3, -1, 1, 16, 0 }; static short iemmp3_tab16[] = { -509,-503,-461,-323,-103, -37, -27, -15, -7, -3, -1, 239, 254, -1, 223, 253, -3, -1, 207, 252, -1, 191, 251, -5, -1, 175, -1, 250, 159, -3, -1, 249, 248, 143, -7, -3, -1, 127, 247, -1, 111, 246, 255, -9, -5, -3, -1, 95, 245, 79, -1, 244, 243, -53, -1, 240, -1, 63, -29, -19, -13, -7, -5, -1, 206, -1, 236, 221, 222, -1, 233, -1, 234, 217, -1, 238, -1, 237, 235, -3, -1, 190, 205, -3, -1, 220, 219, 174, -11, -5, -1, 204, -1, 173, 218, -3, -1, 126, 172, 202, -5, -3, -1, 201, 125, 94, 189, 242, -93, -5, -3, -1, 47, 15, 31, -1, 241, -49, -25, -13, -5, -1, 158, -1, 188, 203, -3, -1, 142, 232, -1, 157, 231, -7, -3, -1, 187, 141, -1, 216, 110, -1, 230, 156, -13, -7, -3, -1, 171, 186, -1, 229, 215, -1, 78, -1, 228, 140, -3, -1, 200, 62, -1, 109, -1, 214, 155, -19, -11, -5, -3, -1, 185, 170, 225, -1, 212, -1, 184, 169, -5, -1, 123, -1, 183, 208, 227, -7, -3, -1, 14, 224, -1, 93, 213, -3, -1, 124, 199, -1, 77, 139, -75, -45, -27, -13, -7, -3, -1, 154, 108, -1, 198, 61, -3, -1, 92, 197, 13, -7, -3, -1, 138, 168, -1, 153, 76, -3, -1, 182, 122, 60, -11, -5, -3, -1, 91, 137, 28, -1, 192, -1, 152, 121, -1, 226, -1, 46, 30, -15, -7, -3, -1, 211, 45, -1, 210, 209, -5, -1, 59, -1, 151, 136, 29, -7, -3, -1, 196, 107, -1, 195, 167, -1, 44, -1, 194, 181, -23, -13, -7, -3, -1, 193, 12, -1, 75, 180, -3, -1, 106, 166, 179, -5, -3, -1, 90, 165, 43, -1, 178, 27, -13, -5, -1, 177, -1, 11, 176, -3, -1, 105, 150, -1, 74, 164, -5, -3, -1, 120, 135, 163, -3, -1, 58, 89, 42, -97, -57, -33, -19, -11, -5, -3, -1, 149, 104, 161, -3, -1, 134, 119, 148, -5, -3, -1, 73, 87, 103, 162, -5, -1, 26, -1, 10, 160, -3, -1, 57, 147, -1, 88, 133, -9, -3, -1, 41, 146, -3, -1, 118, 9, 25, -5, -1, 145, -1, 144, 72, -3, -1, 132, 117, -1, 56, 131, -21, -11, -5, -3, -1, 102, 40, 130, -3, -1, 71, 116, 24, -3, -1, 129, 128, -3, -1, 8, 86, 55, -9, -5, -1, 115, -1, 101, 70, -1, 39, 114, -5, -3, -1, 100, 85, 7, 23, -23, -13, -5, -1, 113, -1, 112, 54, -3, -1, 99, 69, -1, 84, 38, -3, -1, 98, 22, -1, 97, -1, 6, 96, -9, -5, -1, 83, -1, 53, 68, -1, 37, 82, -1, 81, -1, 21, 5, -33, -23, -13, -7, -3, -1, 52, 67, -1, 80, 36, -3, -1, 66, 51, 20, -5, -1, 65, -1, 4, 64, -1, 35, 50, -3, -1, 19, 49, -3, -1, 3, 48, 34, -3, -1, 18, 33, -1, 2, 32, -3, -1, 17, 1, 16, 0 }; static short iemmp3_tab24[] = { -451,-117, -43, -25, -15, -7, -3, -1, 239, 254, -1, 223, 253, -3, -1, 207, 252, -1, 191, 251, -5, -1, 250, -1, 175, 159, -1, 249, 248, -9, -5, -3, -1, 143, 127, 247, -1, 111, 246, -3, -1, 95, 245, -1, 79, 244, -71, -7, -3, -1, 63, 243, -1, 47, 242, -5, -1, 241, -1, 31, 240, -25, -9, -1, 15, -3, -1, 238, 222, -1, 237, 206, -7, -3, -1, 236, 221, -1, 190, 235, -3, -1, 205, 220, -1, 174, 234, -15, -7, -3, -1, 189, 219, -1, 204, 158, -3, -1, 233, 173, -1, 218, 188, -7, -3, -1, 203, 142, -1, 232, 157, -3, -1, 217, 126, -1, 231, 172, 255,-235, -143, -77, -45, -25, -15, -7, -3, -1, 202, 187, -1, 141, 216, -5, -3, -1, 14, 224, 13, 230, -5, -3, -1, 110, 156, 201, -1, 94, 186, -9, -5, -1, 229, -1, 171, 125, -1, 215, 228, -3, -1, 140, 200, -3, -1, 78, 46, 62, -15, -7, -3, -1, 109, 214, -1, 227, 155, -3, -1, 185, 170, -1, 226, 30, -7, -3, -1, 225, 93, -1, 213, 124, -3, -1, 199, 77, -1, 139, 184, -31, -15, -7, -3, -1, 212, 154, -1, 169, 108, -3, -1, 198, 61, -1, 211, 45, -7, -3, -1, 210, 29, -1, 123, 183, -3, -1, 209, 92, -1, 197, 138, -17, -7, -3, -1, 168, 153, -1, 76, 196, -3, -1, 107, 182, -3, -1, 208, 12, 60, -7, -3, -1, 195, 122, -1, 167, 44, -3, -1, 194, 91, -1, 181, 28, -57, -35, -19, -7, -3, -1, 137, 152, -1, 193, 75, -5, -3, -1, 192, 11, 59, -3, -1, 176, 10, 26, -5, -1, 180, -1, 106, 166, -3, -1, 121, 151, -3, -1, 160, 9, 144, -9, -3, -1, 179, 136, -3, -1, 43, 90, 178, -7, -3, -1, 165, 27, -1, 177, 105, -1, 150, 164, -17, -9, -5, -3, -1, 74, 120, 135, -1, 58, 163, -3, -1, 89, 149, -1, 42, 162, -7, -3, -1, 161, 104, -1, 134, 119, -3, -1, 73, 148, -1, 57, 147, -63, -31, -15, -7, -3, -1, 88, 133, -1, 41, 103, -3, -1, 118, 146, -1, 25, 145, -7, -3, -1, 72, 132, -1, 87, 117, -3, -1, 56, 131, -1, 102, 40, -17, -7, -3, -1, 130, 24, -1, 71, 116, -5, -1, 129, -1, 8, 128, -1, 86, 101, -7, -5, -1, 23, -1, 7, 112, 115, -3, -1, 55, 39, 114, -15, -7, -3, -1, 70, 100, -1, 85, 113, -3, -1, 54, 99, -1, 69, 84, -7, -3, -1, 38, 98, -1, 22, 97, -5, -3, -1, 6, 96, 53, -1, 83, 68, -51, -37, -23, -15, -9, -3, -1, 37, 82, -1, 21, -1, 5, 80, -1, 81, -1, 52, 67, -3, -1, 36, 66, -1, 51, 20, -9, -5, -1, 65, -1, 4, 64, -1, 35, 50, -1, 19, 49, -7, -5, -3, -1, 3, 48, 34, 18, -1, 33, -1, 2, 32, -3, -1, 17, 1, -1, 16, 0 }; static short iemmp3_tab_c0[] = { -29, -21, -13, -7, -3, -1, 11, 15, -1, 13, 14, -3, -1, 7, 5, 9, -3, -1, 6, 3, -1, 10, 12, -3, -1, 2, 1, -1, 4, 8, 0 }; static short iemmp3_tab_c1[] = { -15, -7, -3, -1, 15, 14, -1, 13, 12, -3, -1, 11, 10, -1, 9, 8, -7, -3, -1, 7, 6, -1, 5, 4, -3, -1, 3, 2, -1, 1, 0 }; static struct iemmp3_newHuff iemmp3_ht[] = { { /* 0 */ 0 , iemmp3_tab0 } , { /* 2 */ 0 , iemmp3_tab1 } , { /* 3 */ 0 , iemmp3_tab2 } , { /* 3 */ 0 , iemmp3_tab3 } , { /* 0 */ 0 , iemmp3_tab0 } , { /* 4 */ 0 , iemmp3_tab5 } , { /* 4 */ 0 , iemmp3_tab6 } , { /* 6 */ 0 , iemmp3_tab7 } , { /* 6 */ 0 , iemmp3_tab8 } , { /* 6 */ 0 , iemmp3_tab9 } , { /* 8 */ 0 , iemmp3_tab10 } , { /* 8 */ 0 , iemmp3_tab11 } , { /* 8 */ 0 , iemmp3_tab12 } , { /* 16 */ 0 , iemmp3_tab13 } , { /* 0 */ 0 , iemmp3_tab0 } , { /* 16 */ 0 , iemmp3_tab15 } , { /* 16 */ 1 , iemmp3_tab16 } , { /* 16 */ 2 , iemmp3_tab16 } , { /* 16 */ 3 , iemmp3_tab16 } , { /* 16 */ 4 , iemmp3_tab16 } , { /* 16 */ 6 , iemmp3_tab16 } , { /* 16 */ 8 , iemmp3_tab16 } , { /* 16 */ 10, iemmp3_tab16 } , { /* 16 */ 13, iemmp3_tab16 } , { /* 16 */ 4 , iemmp3_tab24 } , { /* 16 */ 5 , iemmp3_tab24 } , { /* 16 */ 6 , iemmp3_tab24 } , { /* 16 */ 7 , iemmp3_tab24 } , { /* 16 */ 8 , iemmp3_tab24 } , { /* 16 */ 9 , iemmp3_tab24 } , { /* 16 */ 11, iemmp3_tab24 } , { /* 16 */ 13, iemmp3_tab24 } }; static struct iemmp3_newHuff iemmp3_htc[] = { { /* 1 , 1 , */ 0 , iemmp3_tab_c0 } , { /* 1 , 1 , */ 0 , iemmp3_tab_c1 } }; static t_class *sigmp3play_class; static BOOL InitMP3(struct iemmp3Struct *mp) { memset(mp,0,sizeof(struct iemmp3Struct)); mp->framesize = 0; mp->fsizeold = -1; mp->bsize = 0; mp->head = mp->tail = NULL; mp->fr.single = -1; mp->bsnum = 0; mp->synth_bo = 1; make_decode_tables(32767); init_layer3(SBLIMIT); return !0; } static BOOL InitAgainMP3(struct iemmp3Struct *mp) { memset(mp,0,sizeof(struct iemmp3Struct)); mp->framesize = 0; mp->fsizeold = -1; mp->bsize = 0; mp->head = mp->tail = NULL; mp->fr.single = -1; mp->bsnum = 0; mp->synth_bo = 1; return !0; } static void ExitMP3(struct iemmp3Struct *mp) { struct iemmp3_buf *b,*bn; b = mp->tail; while(b) { free(b->pnt); bn = b->next; free(b); b = bn; } } static int decodeMP3(struct iemmp3Struct *mp, char *in, int isize, char *out, int osize, int *done) { int len,error=1; iemmp3_gmp = mp; if(osize < 4608) { post("To less out space\n"); return MP3_ERR; } if(in) { if(addbuf(mp,in,isize) == NULL) { return MP3_ERR; } } /* First decode header */ if(mp->framesize == 0) { if(mp->bsize < 4) { return MP3_NEED_MORE; } if(!read_head(mp)) return MP3_EX; if(decode_header(&mp->fr,mp->header) == MP3_EX) return MP3_EX; mp->framesize = mp->fr.framesize; } if(mp->fr.framesize > mp->bsize) return MP3_NEED_MORE; iemmp3_wordpointer = mp->bsspace[mp->bsnum] + 512; mp->bsnum = (mp->bsnum + 1) & 0x1; iemmp3_bitindex = 0; len = 0; while(len < mp->framesize) { int nlen; int blen = mp->tail->size - mp->tail->pos; if( (mp->framesize - len) <= blen) { nlen = mp->framesize-len; } else { nlen = blen; } memcpy(iemmp3_wordpointer+len,mp->tail->pnt+mp->tail->pos,nlen); len += nlen; mp->tail->pos += nlen; mp->bsize -= nlen; if(mp->tail->pos == mp->tail->size) { remove_buf(mp); } } *done = 0; if(mp->fr.error_protection) getbits(16); do_layer3(&mp->fr,(unsigned char *) out,done,&error); if(!error) return MP3_EX; mp->fsizeold = mp->framesize; mp->framesize = 0; return MP3_OK; } static void make_decode_tables(long scaleval) { int i,j,k,kr,divv; real *table,*costab; for(i=0;i<5;i++) { kr=0x10>>i; divv=0x40>>i; costab = iemmp3_pnts[i]; for(k=0;k 0) { if( i & 1 ) p1 = pow(base,(i+1.0)*0.5); else p2 = pow(base,i*0.5); } iemmp3_pow1_1[j][i] = p1; iemmp3_pow2_1[j][i] = p2; iemmp3_pow1_2[j][i] = M_SQRT2 * p1; iemmp3_pow2_2[j][i] = M_SQRT2 * p2; } } for(j=0;j<9;j++) { struct iemmp3_bandInfoStruct *bi = &bandInfo[j]; int *mp; int cb,lwin; short *bdf; mp = iemmp3_map[j][0] = iemmp3_mapbuf0[j]; bdf = bi->longDiff; for(i=0,cb = 0; cb < 8 ; cb++,i+=*bdf++) { *mp++ = (*bdf) >> 1; *mp++ = i; *mp++ = 3; *mp++ = cb; } bdf = bi->shortDiff+3; for(cb=3;cb<13;cb++) { int l = (*bdf++) >> 1; for(lwin=0;lwin<3;lwin++) { *mp++ = l; *mp++ = i + lwin; *mp++ = lwin; *mp++ = cb; } i += 6*l; } iemmp3_mapend[j][0] = mp; mp = iemmp3_map[j][1] = iemmp3_mapbuf1[j]; bdf = bi->shortDiff+0; for(i=0,cb=0;cb<13;cb++) { int l = (*bdf++) >> 1; for(lwin=0;lwin<3;lwin++) { *mp++ = l; *mp++ = i + lwin; *mp++ = lwin; *mp++ = cb; } i += 6*l; } iemmp3_mapend[j][1] = mp; mp = iemmp3_map[j][2] = iemmp3_mapbuf2[j]; bdf = bi->longDiff; for(cb = 0; cb < 22 ; cb++) { *mp++ = (*bdf++) >> 1; *mp++ = cb; } iemmp3_mapend[j][2] = mp; } for(j=0;j<9;j++) { for(i=0;i<23;i++) { iemmp3_longLimit[j][i] = (bandInfo[j].longIdx[i] - 1 + 8) / 18 + 1; if(iemmp3_longLimit[j][i] > (down_sample_sblimit) ) iemmp3_longLimit[j][i] = down_sample_sblimit; } for(i=0;i<14;i++) { iemmp3_shortLimit[j][i] = (bandInfo[j].shortIdx[i] - 1) / 18 + 1; if(iemmp3_shortLimit[j][i] > (down_sample_sblimit) ) iemmp3_shortLimit[j][i] = down_sample_sblimit; } } for(i=0;i<5;i++) { for(j=0;j<6;j++) { for(k=0;k<6;k++) { int n = k + j * 6 + i * 36; iemmp3_slen2[n] = i|(j<<3)|(k<<6)|(3<<12); } } } for(i=0;i<4;i++) { for(j=0;j<4;j++) { for(k=0;k<4;k++) { int n = k + j * 4 + i * 16; iemmp3_slen2[n+180] = i|(j<<3)|(k<<6)|(4<<12); } } } for(i=0;i<4;i++) { for(j=0;j<3;j++) { int n = j + i * 3; iemmp3_slen2[n+244] = i|(j<<3) | (5<<12); iemmp3_n_slen2[n+500] = i|(j<<3) | (2<<12) | (1<<15); } } for(i=0;i<5;i++) { for(j=0;j<5;j++) { for(k=0;k<4;k++) { for(l=0;l<4;l++) { int n = l + k * 4 + j * 16 + i * 80; iemmp3_n_slen2[n] = i|(j<<3)|(k<<6)|(l<<9)|(0<<12); } } } } for(i=0;i<5;i++) { for(j=0;j<5;j++) { for(k=0;k<4;k++) { int n = k + j * 4 + i * 20; iemmp3_n_slen2[n+400] = i|(j<<3)|(k<<6)|(1<<12); } } } } static void remove_buf(struct iemmp3Struct *mp) { struct iemmp3_buf *buf = mp->tail; mp->tail = buf->next; if(mp->tail) mp->tail->prev = NULL; else { mp->tail = mp->head = NULL; } free(buf->pnt); free(buf); } static struct iemmp3_buf *addbuf(struct iemmp3Struct *mp,char *buf,int size) { struct iemmp3_buf *nbuf; nbuf = malloc( sizeof(struct iemmp3_buf) ); if(!nbuf) { post("Out of memory!\n"); return NULL; } nbuf->pnt = malloc(size); if(!nbuf->pnt) { free(nbuf); return NULL; } nbuf->size = size; memcpy(nbuf->pnt,buf,size); nbuf->next = NULL; nbuf->prev = mp->head; nbuf->pos = 0; if(!mp->tail) { mp->tail = nbuf; } else { mp->head->next = nbuf; } mp->head = nbuf; mp->bsize += size; return nbuf; } static int read_buf_byte(struct iemmp3Struct *mp,int *err) { unsigned int b; int pos; pos = mp->tail->pos; while(pos >= mp->tail->size) { remove_buf(mp); pos = mp->tail->pos; if(!mp->tail) { post("Fatal error!\n"); *err = 0; return(0); } } b = mp->tail->pnt[pos]; mp->bsize--; mp->tail->pos++; return(b); } static int read_head(struct iemmp3Struct *mp) { unsigned long head; int error=1; head = read_buf_byte(mp,&error); head <<= 8; head |= read_buf_byte(mp,&error); head <<= 8; head |= read_buf_byte(mp,&error); head <<= 8; head |= read_buf_byte(mp,&error); mp->header = head; return(error); } static int decode_header(struct iemmp3_frame *fr,unsigned long newhead) { if( newhead & (1<<20) ) { fr->lsf = (newhead & (1<<19)) ? 0x0 : 0x1; fr->mpeg25 = 0; } else { fr->lsf = 1; fr->mpeg25 = 1; } fr->lay = 4-((newhead>>17)&3); if( ((newhead>>10)&0x3) == 0x3) { post("Stream error"); return(MP3_EX); } if(fr->mpeg25) { fr->sampling_frequency = 6 + ((newhead>>10)&0x3); } else fr->sampling_frequency = ((newhead>>10)&0x3) + (fr->lsf*3); fr->error_protection = ((newhead>>16)&0x1)^0x1; if(fr->mpeg25) /* allow Bitrate change for 2.5 ... */ fr->bitrate_index = ((newhead>>12)&0xf); fr->bitrate_index = ((newhead>>12)&0xf); fr->padding = ((newhead>>9)&0x1); fr->extension = ((newhead>>8)&0x1); fr->mode = ((newhead>>6)&0x3); fr->mode_ext = ((newhead>>4)&0x3); fr->copyright = ((newhead>>3)&0x1); fr->original = ((newhead>>2)&0x1); fr->emphasis = newhead & 0x3; fr->stereo = (fr->mode == MPG_MD_MONO) ? 1 : 2; if(!fr->bitrate_index) { post("Free format not supported.\n"); return(0); } switch(fr->lay) { case 1: post("Layer I not supported!\n"); break; case 2: post("Layer II not supported!\n"); break; case 3: fr->framesize = (long) iemmp3_tabsel_123[fr->lsf][2][fr->bitrate_index] * 144000; fr->framesize /= iemmp3_freqs[fr->sampling_frequency]<<(fr->lsf); fr->framesize = fr->framesize + fr->padding - 4; //post("Framesize: %d",fr->framesize); break; default: post("Sorry, unknown layer type.\n"); return (0); } return(1); } static unsigned int getbits(int number_of_bits) { unsigned long rval; if(!number_of_bits) return 0; { rval = iemmp3_wordpointer[0]; rval <<= 8; rval |= iemmp3_wordpointer[1]; rval <<= 8; rval |= iemmp3_wordpointer[2]; rval <<= iemmp3_bitindex; rval &= 0xffffff; iemmp3_bitindex += number_of_bits; rval >>= (24-number_of_bits); iemmp3_wordpointer += (iemmp3_bitindex>>3); iemmp3_bitindex &= 7; } return rval; } static unsigned int getbits_fast(int number_of_bits) { unsigned long rval; { rval = iemmp3_wordpointer[0]; rval <<= 8; rval |= iemmp3_wordpointer[1]; rval <<= iemmp3_bitindex; rval &= 0xffff; iemmp3_bitindex += number_of_bits; rval >>= (16-number_of_bits); iemmp3_wordpointer += (iemmp3_bitindex>>3); iemmp3_bitindex &= 7; } return rval; } static unsigned int get1bit(void) { unsigned char rval; rval = *iemmp3_wordpointer << iemmp3_bitindex; iemmp3_bitindex++; iemmp3_wordpointer += (iemmp3_bitindex>>3); iemmp3_bitindex &= 7; return rval>>7; } static int do_layer3(struct iemmp3_frame *fr,unsigned char *pcm_sample,int *pcm_point,int *err) { int gr, ch, ss,clip=0; int scalefacs[39]; /* max 39 for short[13][3] mode, mixed: 38, long: 22 */ struct iemmp3_III_sideinfo sideinfo; int stereo = fr->stereo; int single = fr->single; int ms_stereo,i_stereo; int sfreq = fr->sampling_frequency; int stereo1,granules; if(stereo == 1) { /* stream is mono */ stereo1 = 1; single = 0; } else if(single >= 0) /* stream is stereo, but force to mono */ stereo1 = 1; else stereo1 = 2; if(fr->mode == MPG_MD_JOINT_STEREO) { ms_stereo = fr->mode_ext & 0x2; i_stereo = fr->mode_ext & 0x1; } else ms_stereo = i_stereo = 0; if(fr->lsf) { granules = 1; if(!III_get_side_info_2(&sideinfo,stereo,ms_stereo,sfreq,single)) { *err = 0; return 0; } } else { granules = 2; #ifdef IEM_MPEG1 if(!III_get_side_info_1(&sideinfo,stereo,ms_stereo,sfreq,single)) { *err = 0; return 0; } #else post("Not supported\n"); #endif } if(set_pointer(sideinfo.main_data_begin) == MP3_ERR) return 0; for (gr=0;grlsf) part2bits = III_get_scale_factors_2(scalefacs,gr_info,0); else { #ifdef IEM_MPEG1 part2bits = III_get_scale_factors_1(scalefacs,gr_info); #else post("Not supported\n"); #endif } if(III_dequantize_sample(hybridIn[0], scalefacs,gr_info,sfreq,part2bits)) return clip; } if(stereo == 2) { struct iemmp3_gr_info_s *gr_info = &(sideinfo.ch[1].gr[gr]); long part2bits; if(fr->lsf) part2bits = III_get_scale_factors_2(scalefacs,gr_info,i_stereo); else { #ifdef IEM_MPEG1 part2bits = III_get_scale_factors_1(scalefacs,gr_info); #else post("Not supported\n"); #endif } if(III_dequantize_sample(hybridIn[1],scalefacs,gr_info,sfreq,part2bits)) return clip; if(ms_stereo) { int i; for(i=0;ilsf); if(ms_stereo || i_stereo || (single == 3) ) { if(gr_info->maxb > sideinfo.ch[0].gr[gr].maxb) sideinfo.ch[0].gr[gr].maxb = gr_info->maxb; else gr_info->maxb = sideinfo.ch[0].gr[gr].maxb; } switch(single) { case 3: { register unsigned int i; register real *in0 = (real *) hybridIn[0],*in1 = (real *) hybridIn[1]; for(i=0;imaxb;i++,in0++) *in0 = (*in0 + *in1++); /* *0.5 done by pow-scale */ } break; case 1: { register unsigned int i; register real *in0 = (real *) hybridIn[0],*in1 = (real *) hybridIn[1]; for(i=0;imaxb;i++) *in0++ = *in1++; } break; } } for(ch=0;ch= 0) { clip += synth_1to1_mono(hybridOut[0][ss],pcm_sample,pcm_point); } else { int p1 = *pcm_point; clip += synth_1to1(hybridOut[0][ss],0,pcm_sample,&p1); clip += synth_1to1(hybridOut[1][ss],1,pcm_sample,pcm_point); } } } return clip; } static int III_get_side_info_2(struct iemmp3_III_sideinfo *si,int stereo, int ms_stereo,long sfreq,int single) { int ch; int powdiff = (single == 3) ? 4 : 0; si->main_data_begin = getbits(8); if (stereo == 1) si->private_bits = get1bit(); else si->private_bits = getbits_fast(2); for (ch=0; chch[ch].gr[0]); gr_info->part2_3_length = getbits(12); gr_info->big_values = getbits_fast(9); if(gr_info->big_values > 288) { post("big_values too large!\n"); gr_info->big_values = 288; } gr_info->pow2gain = iemmp3_gainpow2+256 - getbits_fast(8) + powdiff; if(ms_stereo) gr_info->pow2gain += 2; gr_info->scalefac_compress = getbits(9); /* window-switching flag == 1 for block_Type != 0 .. and block-type == 0 -> win-sw-flag = 0 */ if(get1bit()) { int i; gr_info->block_type = getbits_fast(2); gr_info->mixed_block_flag = get1bit(); gr_info->table_select[0] = getbits_fast(5); gr_info->table_select[1] = getbits_fast(5); /* * table_select[2] not needed, because there is no region2, * but to satisfy some verifications tools we set it either. */ gr_info->table_select[2] = 0; for(i=0;i<3;i++) gr_info->full_gain[i] = gr_info->pow2gain + (getbits_fast(3)<<3); if(gr_info->block_type == 0) { post("Blocktype == 0 and window-switching == 1 not allowed.\n"); return(0); } /* region_count/start parameters are implicit in this case. */ /* check this again! */ if(gr_info->block_type == 2) gr_info->region1start = 36>>1; else if(sfreq == 8) /* check this for 2.5 and sfreq=8 */ gr_info->region1start = 108>>1; else gr_info->region1start = 54>>1; gr_info->region2start = 576>>1; } else { int i,r0c,r1c; for (i=0; i<3; i++) gr_info->table_select[i] = getbits_fast(5); r0c = getbits_fast(4); r1c = getbits_fast(3); gr_info->region1start = bandInfo[sfreq].longIdx[r0c+1] >> 1 ; gr_info->region2start = bandInfo[sfreq].longIdx[r0c+1+r1c+1] >> 1; gr_info->block_type = 0; gr_info->mixed_block_flag = 0; } gr_info->scalefac_scale = get1bit(); gr_info->count1table_select = get1bit(); } return(1); } #ifdef IEM_MPEG1 static int III_get_side_info_1(struct iemmp3_III_sideinfo *si,int stereo, int ms_stereo,long sfreq,int single) { int ch, gr; int powdiff = (single == 3) ? 4 : 0; si->main_data_begin = getbits(9); if (stereo == 1) si->private_bits = getbits_fast(5); else si->private_bits = getbits_fast(3); for (ch=0; chch[ch].gr[0].scfsi = -1; si->ch[ch].gr[1].scfsi = getbits_fast(4); } for (gr=0; gr<2; gr++) { for (ch=0; chch[ch].gr[gr]); gr_info->part2_3_length = getbits(12); gr_info->big_values = getbits_fast(9); if(gr_info->big_values > 288) { post("big_values too large!\n"); gr_info->big_values = 288; } gr_info->pow2gain = iemmp3_gainpow2+256 - getbits_fast(8) + powdiff; if(ms_stereo) gr_info->pow2gain += 2; gr_info->scalefac_compress = getbits_fast(4); /* window-switching flag == 1 for block_Type != 0 .. and block-type == 0 -> win-sw-flag = 0 */ if(get1bit()) { int i; gr_info->block_type = getbits_fast(2); gr_info->mixed_block_flag = get1bit(); gr_info->table_select[0] = getbits_fast(5); gr_info->table_select[1] = getbits_fast(5); /* * table_select[2] not needed, because there is no region2, * but to satisfy some verifications tools we set it either. */ gr_info->table_select[2] = 0; for(i=0;i<3;i++) gr_info->full_gain[i] = gr_info->pow2gain + (getbits_fast(3)<<3); if(gr_info->block_type == 0) { post("Blocktype == 0 and window-switching == 1 not allowed.\n"); return(0); } /* region_count/start parameters are implicit in this case. */ gr_info->region1start = 36>>1; gr_info->region2start = 576>>1; } else { int i,r0c,r1c; for (i=0; i<3; i++) gr_info->table_select[i] = getbits_fast(5); r0c = getbits_fast(4); r1c = getbits_fast(3); gr_info->region1start = bandInfo[sfreq].longIdx[r0c+1] >> 1 ; gr_info->region2start = bandInfo[sfreq].longIdx[r0c+1+r1c+1] >> 1; gr_info->block_type = 0; gr_info->mixed_block_flag = 0; } gr_info->preflag = get1bit(); gr_info->scalefac_scale = get1bit(); gr_info->count1table_select = get1bit(); } } return(1); } #endif static int set_pointer(long backstep) { unsigned char *bsbufold; if(iemmp3_gmp->fsizeold < 0 && backstep > 0) { post("Can't step back %ld!\n",backstep); return MP3_ERR; } bsbufold = iemmp3_gmp->bsspace[iemmp3_gmp->bsnum] + 512; iemmp3_wordpointer -= backstep; if (backstep) memcpy(iemmp3_wordpointer,bsbufold+iemmp3_gmp->fsizeold-backstep,backstep); iemmp3_bitindex = 0; return MP3_OK; } #ifdef IEM_MPEG1 static int III_get_scale_factors_1(int *scf,struct iemmp3_gr_info_s *gr_info) { static unsigned char slen[2][16] = { {0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4}, {0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3} }; int numbits; int num0 = slen[0][gr_info->scalefac_compress]; int num1 = slen[1][gr_info->scalefac_compress]; if (gr_info->block_type == 2) { int i=18; numbits = (num0 + num1) * 18; if (gr_info->mixed_block_flag) { for (i=8;i;i--) *scf++ = getbits_fast(num0); i = 9; numbits -= num0; /* num0 * 17 + num1 * 18 */ } for (;i;i--) *scf++ = getbits_fast(num0); for (i = 18; i; i--) *scf++ = getbits_fast(num1); *scf++ = 0; *scf++ = 0; *scf++ = 0; /* short[13][0..2] = 0 */ } else { int i; int scfsi = gr_info->scfsi; if(scfsi < 0) { /* scfsi < 0 => granule == 0 */ for(i=11;i;i--) *scf++ = getbits_fast(num0); for(i=10;i;i--) *scf++ = getbits_fast(num1); numbits = (num0 + num1) * 10 + num0; } else { numbits = 0; if(!(scfsi & 0x8)) { for (i=6;i;i--) *scf++ = getbits_fast(num0); numbits += num0 * 6; } else { *scf++ = 0; *scf++ = 0; *scf++ = 0; /* set to ZERO necessary? */ *scf++ = 0; *scf++ = 0; *scf++ = 0; } if(!(scfsi & 0x4)) { for (i=5;i;i--) *scf++ = getbits_fast(num0); numbits += num0 * 5; } else { *scf++ = 0; *scf++ = 0; *scf++ = 0; /* set to ZERO necessary? */ *scf++ = 0; *scf++ = 0; } if(!(scfsi & 0x2)) { for(i=5;i;i--) *scf++ = getbits_fast(num1); numbits += num1 * 5; } else { *scf++ = 0; *scf++ = 0; *scf++ = 0; /* set to ZERO necessary? */ *scf++ = 0; *scf++ = 0; } if(!(scfsi & 0x1)) { for (i=5;i;i--) *scf++ = getbits_fast(num1); numbits += num1 * 5; } else { *scf++ = 0; *scf++ = 0; *scf++ = 0; /* set to ZERO necessary? */ *scf++ = 0; *scf++ = 0; } } *scf++ = 0; /* no l[21] in original sources */ } return numbits; } #endif static int III_get_scale_factors_2(int *scf,struct iemmp3_gr_info_s *gr_info,int i_stereo) { unsigned char *pnt; int i,j; unsigned int slen; int n = 0; int numbits = 0; static unsigned char stab[3][6][4] = { { { 6, 5, 5,5 } , { 6, 5, 7,3 } , { 11,10,0,0} , { 7, 7, 7,0 } , { 6, 6, 6,3 } , { 8, 8,5,0} } , { { 9, 9, 9,9 } , { 9, 9,12,6 } , { 18,18,0,0} , {12,12,12,0 } , {12, 9, 9,6 } , { 15,12,9,0} } , { { 6, 9, 9,9 } , { 6, 9,12,6 } , { 15,18,0,0} , { 6,15,12,0 } , { 6,12, 9,6 } , { 6,18,9,0} } }; if(i_stereo) /* i_stereo AND second channel -> do_layer3() checks this */ slen = iemmp3_slen2[gr_info->scalefac_compress>>1]; else slen = iemmp3_n_slen2[gr_info->scalefac_compress]; gr_info->preflag = (slen>>15) & 0x1; n = 0; if( gr_info->block_type == 2 ) { n++; if(gr_info->mixed_block_flag) n++; } pnt = stab[n][(slen>>12)&0x7]; for(i=0;i<4;i++) { int num = slen & 0x7; slen >>= 3; if(num) { for(j=0;j<(int)(pnt[i]);j++) *scf++ = getbits_fast(num); numbits += pnt[i] * num; } else { for(j=0;j<(int)(pnt[i]);j++) *scf++ = 0; } } n = (n << 1) + 1; for(i=0;iscalefac_scale; real *xrpnt = (real *) xr; int l[3],l3; int part2remain = gr_info->part2_3_length - part2bits; int *me; { int bv = gr_info->big_values; int region1 = gr_info->region1start; int region2 = gr_info->region2start; l3 = ((576>>1)-bv)>>1; /* * we may lose the 'odd' bit here !! * check this later again */ if(bv <= region1) { l[0] = bv; l[1] = 0; l[2] = 0; } else { l[0] = region1; if(bv <= region2) { l[1] = bv - l[0]; l[2] = 0; } else { l[1] = region2 - l[0]; l[2] = bv - region2; } } } if(gr_info->block_type == 2) { /* * decoding with short or mixed mode BandIndex table */ int i,max[4]; int step=0,lwin=0,cb=0; register real v = 0.0; register int *m,mc; if(gr_info->mixed_block_flag) { max[3] = -1; max[0] = max[1] = max[2] = 2; m = iemmp3_map[sfreq][0]; me = iemmp3_mapend[sfreq][0]; } else { max[0] = max[1] = max[2] = max[3] = -1; /* max[3] not really needed in this case */ m = iemmp3_map[sfreq][1]; me = iemmp3_mapend[sfreq][1]; } mc = 0; for(i=0;i<2;i++) { int lp = l[i]; struct iemmp3_newHuff *h = iemmp3_ht+gr_info->table_select[i]; for(;lp;lp--,mc--) { register int x,y; if( (!mc) ) { mc = *m++; xrpnt = ((real *) xr) + (*m++); lwin = *m++; cb = *m++; if(lwin == 3) { v = gr_info->pow2gain[(*scf++) << shift]; step = 1; } else { v = gr_info->full_gain[lwin][(*scf++) << shift]; step = 3; } } { register short *val = h->table; while((y=*val++)<0) { if (get1bit()) val -= y; part2remain--; } x = y >> 4; y &= 0xf; } if(x == 15) { max[lwin] = cb; part2remain -= h->linbits+1; x += getbits(h->linbits); if(get1bit()) *xrpnt = -iemmp3_ispow[x] * v; else *xrpnt = iemmp3_ispow[x] * v; } else if(x) { max[lwin] = cb; if(get1bit()) *xrpnt = -iemmp3_ispow[x] * v; else *xrpnt = iemmp3_ispow[x] * v; part2remain--; } else *xrpnt = 0.0; xrpnt += step; if(y == 15) { max[lwin] = cb; part2remain -= h->linbits+1; y += getbits(h->linbits); if(get1bit()) *xrpnt = -iemmp3_ispow[y] * v; else *xrpnt = iemmp3_ispow[y] * v; } else if(y) { max[lwin] = cb; if(get1bit()) *xrpnt = -iemmp3_ispow[y] * v; else *xrpnt = iemmp3_ispow[y] * v; part2remain--; } else *xrpnt = 0.0; xrpnt += step; } } for(;l3 && (part2remain > 0);l3--) { struct iemmp3_newHuff *h = iemmp3_htc+gr_info->count1table_select; register short *val = h->table,a; while((a=*val++)<0) { part2remain--; if(part2remain < 0) { part2remain++; a = 0; break; } if (get1bit()) val -= a; } for(i=0;i<4;i++) { if(!(i & 1)) { if(!mc) { mc = *m++; xrpnt = ((real *) xr) + (*m++); lwin = *m++; cb = *m++; if(lwin == 3) { v = gr_info->pow2gain[(*scf++) << shift]; step = 1; } else { v = gr_info->full_gain[lwin][(*scf++) << shift]; step = 3; } } mc--; } if( (a & (0x8>>i)) ) { max[lwin] = cb; part2remain--; if(part2remain < 0) { part2remain++; break; } if(get1bit()) *xrpnt = -v; else *xrpnt = v; } else *xrpnt = 0.0; xrpnt += step; } } while( m < me ) { if(!mc) { mc = *m++; xrpnt = ((real *) xr) + *m++; if( (*m++) == 3) step = 1; else step = 3; m++; /* cb */ } mc--; *xrpnt = 0.0; xrpnt += step; *xrpnt = 0.0; xrpnt += step; /* we could add a little opt. here: * if we finished a band for window 3 or a long band * further bands could copied in a simple loop without a * special 'map' decoding */ } gr_info->maxband[0] = max[0]+1; gr_info->maxband[1] = max[1]+1; gr_info->maxband[2] = max[2]+1; gr_info->maxbandl = max[3]+1; { int rmax = max[0] > max[1] ? max[0] : max[1]; rmax = (rmax > max[2] ? rmax : max[2]) + 1; gr_info->maxb = rmax ? iemmp3_shortLimit[sfreq][rmax] : iemmp3_longLimit[sfreq][max[3]+1]; } } else { /* * decoding with 'long' BandIndex table (block_type != 2) */ int *pretab = gr_info->preflag ? iemmp3_pretab1 : iemmp3_pretab2; int i,max = -1; int cb = 0; register int *m = iemmp3_map[sfreq][2]; register real v = 0.0; register int mc = 0; /* * long hash table values */ for(i=0;i<3;i++) { int lp = l[i]; struct iemmp3_newHuff *h = iemmp3_ht+gr_info->table_select[i]; for(;lp;lp--,mc--) { int x,y; if(!mc) { mc = *m++; v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift]; cb = *m++; } { register short *val = h->table; while((y=*val++)<0) { if (get1bit()) val -= y; part2remain--; } x = y >> 4; y &= 0xf; } if (x == 15) { max = cb; part2remain -= h->linbits+1; x += getbits(h->linbits); if(get1bit()) *xrpnt++ = -iemmp3_ispow[x] * v; else *xrpnt++ = iemmp3_ispow[x] * v; } else if(x) { max = cb; if(get1bit()) *xrpnt++ = -iemmp3_ispow[x] * v; else *xrpnt++ = iemmp3_ispow[x] * v; part2remain--; } else *xrpnt++ = 0.0; if (y == 15) { max = cb; part2remain -= h->linbits+1; y += getbits(h->linbits); if(get1bit()) *xrpnt++ = -iemmp3_ispow[y] * v; else *xrpnt++ = iemmp3_ispow[y] * v; } else if(y) { max = cb; if(get1bit()) *xrpnt++ = -iemmp3_ispow[y] * v; else *xrpnt++ = iemmp3_ispow[y] * v; part2remain--; } else *xrpnt++ = 0.0; } } /* * short (count1table) values */ for(;l3 && (part2remain > 0);l3--) { struct iemmp3_newHuff *h = iemmp3_htc+gr_info->count1table_select; register short *val = h->table,a; while((a=*val++)<0) { part2remain--; if(part2remain < 0) { part2remain++; a = 0; break; } if (get1bit()) val -= a; } for(i=0;i<4;i++) { if(!(i & 1)) { if(!mc) { mc = *m++; cb = *m++; v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift]; } mc--; } if ( (a & (0x8>>i)) ) { max = cb; part2remain--; if(part2remain < 0) { part2remain++; break; } if(get1bit()) *xrpnt++ = -v; else *xrpnt++ = v; } else *xrpnt++ = 0.0; } } /* * zero part */ for(i=(&xr[SBLIMIT][0]-xrpnt)>>1;i;i--) { *xrpnt++ = 0.0; *xrpnt++ = 0.0; } gr_info->maxbandl = max+1; gr_info->maxb = iemmp3_longLimit[sfreq][gr_info->maxbandl]; } while( part2remain > 16 ) { getbits(16); /* Dismiss stuffing Bits */ part2remain -= 16; } if(part2remain > 0) getbits(part2remain); else if(part2remain < 0) { post("mpg123: Can't rewind stream by %d bits!\n",-part2remain); return 1; /* -> error */ } return 0; } static void III_i_stereo(real xr_buf[2][SBLIMIT][SSLIMIT],int *scalefac, struct iemmp3_gr_info_s *gr_info,int sfreq,int ms_stereo,int lsf) { real (*xr)[SBLIMIT*SSLIMIT] = (real (*)[SBLIMIT*SSLIMIT] ) xr_buf; struct iemmp3_bandInfoStruct *bi = &bandInfo[sfreq]; real *tab1,*tab2; if(lsf) { int p = gr_info->scalefac_compress & 0x1; if(ms_stereo) { tab1 = iemmp3_pow1_2[p]; tab2 = iemmp3_pow2_2[p]; } else { tab1 = iemmp3_pow1_1[p]; tab2 = iemmp3_pow2_1[p]; } } else { if(ms_stereo) { tab1 = iemmp3_tan1_2; tab2 = iemmp3_tan2_2; } else { tab1 = iemmp3_tan1_1; tab2 = iemmp3_tan2_1; } } if (gr_info->block_type == 2) { int lwin,do_l = 0; if( gr_info->mixed_block_flag ) do_l = 1; for (lwin=0;lwin<3;lwin++) /* process each window */ { /* get first band with zero values */ int is_p,sb,idx,sfb = gr_info->maxband[lwin]; /* sfb is minimal 3 for mixed mode */ if(sfb > 3) do_l = 0; for(;sfb<12;sfb++) { is_p = scalefac[sfb*3+lwin-gr_info->mixed_block_flag]; /* scale: 0-15 */ if(is_p != 7) { real t1,t2; sb = bi->shortDiff[sfb]; idx = bi->shortIdx[sfb] + lwin; t1 = tab1[is_p]; t2 = tab2[is_p]; for (; sb > 0; sb--,idx+=3) { real v = xr[0][idx]; xr[0][idx] = v * t1; xr[1][idx] = v * t2; } } } #if 1 /* in the original: copy 10 to 11 , here: copy 11 to 12 maybe still wrong??? (copy 12 to 13?) */ is_p = scalefac[11*3+lwin-gr_info->mixed_block_flag]; /* scale: 0-15 */ sb = bi->shortDiff[12]; idx = bi->shortIdx[12] + lwin; #else is_p = scalefac[10*3+lwin-gr_info->mixed_block_flag]; /* scale: 0-15 */ sb = bi->shortDiff[11]; idx = bi->shortIdx[11] + lwin; #endif if(is_p != 7) { real t1,t2; t1 = tab1[is_p]; t2 = tab2[is_p]; for ( ; sb > 0; sb--,idx+=3 ) { real v = xr[0][idx]; xr[0][idx] = v * t1; xr[1][idx] = v * t2; } } } /* end for(lwin; .. ; . ) */ if (do_l) { /* also check l-part, if ALL bands in the three windows are 'empty' * and mode = mixed_mode */ int sfb = gr_info->maxbandl; int idx = bi->longIdx[sfb]; for ( ; sfb<8; sfb++ ) { int sb = bi->longDiff[sfb]; int is_p = scalefac[sfb]; /* scale: 0-15 */ if(is_p != 7) { real t1,t2; t1 = tab1[is_p]; t2 = tab2[is_p]; for ( ; sb > 0; sb--,idx++) { real v = xr[0][idx]; xr[0][idx] = v * t1; xr[1][idx] = v * t2; } } else idx += sb; } } } else /* ((gr_info->block_type != 2)) */ { int sfb = gr_info->maxbandl; int is_p,idx = bi->longIdx[sfb]; for ( ; sfb<21; sfb++) { int sb = bi->longDiff[sfb]; is_p = scalefac[sfb]; /* scale: 0-15 */ if(is_p != 7) { real t1,t2; t1 = tab1[is_p]; t2 = tab2[is_p]; for ( ; sb > 0; sb--,idx++) { real v = xr[0][idx]; xr[0][idx] = v * t1; xr[1][idx] = v * t2; } } else idx += sb; } is_p = scalefac[20]; /* copy l-band 20 to l-band 21 */ if(is_p != 7) { int sb; real t1 = tab1[is_p],t2 = tab2[is_p]; for ( sb = bi->longDiff[21]; sb > 0; sb--,idx++ ) { real v = xr[0][idx]; xr[0][idx] = v * t1; xr[1][idx] = v * t2; } } } /* ... */ } static void III_antialias(real xr[SBLIMIT][SSLIMIT],struct iemmp3_gr_info_s *gr_info) { int sblim; if(gr_info->block_type == 2) { if(!gr_info->mixed_block_flag) return; sblim = 1; } else { sblim = gr_info->maxb-1; } /* 31 alias-reduction operations between each pair of sub-bands */ /* with 8 butterflies between each pair */ { int sb; real *xr1=(real *) xr[1]; for(sb=sblim;sb;sb--,xr1+=10) { int ss; real *cs=iemmp3_aa_cs,*ca=iemmp3_aa_ca; real *xr2 = xr1; for(ss=7;ss>=0;ss--) { /* upper and lower butterfly inputs */ register real bu = *--xr2,bd = *xr1; *xr2 = (bu * (*cs) ) - (bd * (*ca) ); *xr1++ = (bd * (*cs++) ) + (bu * (*ca++) ); } } } } static void III_hybrid(real fsIn[SBLIMIT][SSLIMIT],real tsOut[SSLIMIT][SBLIMIT], int ch,struct iemmp3_gr_info_s *gr_info) { real *tspnt = (real *) tsOut; real (*block)[2][SBLIMIT*SSLIMIT] = iemmp3_gmp->hybrid_block; int *blc = iemmp3_gmp->hybrid_blc; real *rawout1,*rawout2; int bt; unsigned int sb = 0; { int b = blc[ch]; rawout1=block[b][ch]; b=-b+1; rawout2=block[b][ch]; blc[ch] = b; } if(gr_info->mixed_block_flag) { sb = 2; dct36(fsIn[0],rawout1,rawout2,iemmp3_win[0],tspnt); dct36(fsIn[1],rawout1+18,rawout2+18,iemmp3_win1[0],tspnt+1); rawout1 += 36; rawout2 += 36; tspnt += 2; } bt = gr_info->block_type; if(bt == 2) { for (; sbmaxb; sb+=2,tspnt+=2,rawout1+=36,rawout2+=36) { dct12(fsIn[sb],rawout1,rawout2,iemmp3_win[2],tspnt); dct12(fsIn[sb+1],rawout1+18,rawout2+18,iemmp3_win1[2],tspnt+1); } } else { for (; sbmaxb; sb+=2,tspnt+=2,rawout1+=36,rawout2+=36) { dct36(fsIn[sb],rawout1,rawout2,iemmp3_win[bt],tspnt); dct36(fsIn[sb+1],rawout1+18,rawout2+18,iemmp3_win1[bt],tspnt+1); } } for(;sbsynth_bo; if(!channel) { bo--; bo &= 0xf; buf = iemmp3_gmp->synth_buffs[0]; } else { samples++; buf = iemmp3_gmp->synth_buffs[1]; } if(bo & 0x1) { b0 = buf[0]; bo1 = bo; dct64(buf[1]+((bo+1)&0xf),buf[0]+bo,bandPtr); } else { b0 = buf[1]; bo1 = bo+1; dct64(buf[0]+bo,buf[1]+bo+1,bandPtr); } iemmp3_gmp->synth_bo = bo; { register int j; real *window = iemmp3_decwin + 16 - bo1; for (j=16;j;j--,b0+=0x10,window+=0x20,samples+=step) { real sum; sum = window[0x0] * b0[0x0]; sum -= window[0x1] * b0[0x1]; sum += window[0x2] * b0[0x2]; sum -= window[0x3] * b0[0x3]; sum += window[0x4] * b0[0x4]; sum -= window[0x5] * b0[0x5]; sum += window[0x6] * b0[0x6]; sum -= window[0x7] * b0[0x7]; sum += window[0x8] * b0[0x8]; sum -= window[0x9] * b0[0x9]; sum += window[0xA] * b0[0xA]; sum -= window[0xB] * b0[0xB]; sum += window[0xC] * b0[0xC]; sum -= window[0xD] * b0[0xD]; sum += window[0xE] * b0[0xE]; sum -= window[0xF] * b0[0xF]; WRITE_SAMPLE(samples,sum,clip); } { real sum; sum = window[0x0] * b0[0x0]; sum += window[0x2] * b0[0x2]; sum += window[0x4] * b0[0x4]; sum += window[0x6] * b0[0x6]; sum += window[0x8] * b0[0x8]; sum += window[0xA] * b0[0xA]; sum += window[0xC] * b0[0xC]; sum += window[0xE] * b0[0xE]; WRITE_SAMPLE(samples,sum,clip); b0-=0x10,window-=0x20,samples+=step; } window += bo1<<1; for (j=15;j;j--,b0-=0x10,window-=0x20,samples+=step) { real sum; sum = -window[-0x1] * b0[0x0]; sum -= window[-0x2] * b0[0x1]; sum -= window[-0x3] * b0[0x2]; sum -= window[-0x4] * b0[0x3]; sum -= window[-0x5] * b0[0x4]; sum -= window[-0x6] * b0[0x5]; sum -= window[-0x7] * b0[0x6]; sum -= window[-0x8] * b0[0x7]; sum -= window[-0x9] * b0[0x8]; sum -= window[-0xA] * b0[0x9]; sum -= window[-0xB] * b0[0xA]; sum -= window[-0xC] * b0[0xB]; sum -= window[-0xD] * b0[0xC]; sum -= window[-0xE] * b0[0xD]; sum -= window[-0xF] * b0[0xE]; sum -= window[-0x0] * b0[0xF]; WRITE_SAMPLE(samples,sum,clip); } } *pnt += 128; return clip; } static void *sigmp3play_new(void) { char *vec; t_sigmp3play *x = (t_sigmp3play *)pd_new(sigmp3play_class); x->file_is_open = 0; x->play_state = 0; x->mp3_encode_size = 0; x->mp3_out_index = 0; x->file_block_num = 0; x->file_remain = 0; x->file_size = 0; x->mp3_ch = 1; x->mp3_sr = 44100; x->obj_sr = 44100; x->obj_n = 1; x->samp_per_frame = 1152; x->mp3_byterate = 11; x->down = 0; x->scale = 1.0/32768.0; x->offset_sec = 0.0; x->fh = (FILE *)0L; x->mp3inbuf = (char *)getzbytes(MY_MP3_MALLOC_IN_SIZE); x->mp3outbuf = (char *)getzbytes(MY_MP3_MALLOC_OUT_SIZE); x->filename = (char *)getzbytes(MY_MP3_MALLOC_FN); x->begframeseek = (int *)0; x->curframeseek = 0; x->maxframeseek = 0; x->frame_counter = 0; x->time1_bang0_handle = 0; x->time_factor = 0.0; vec = x->filename; *vec = 0; InitMP3(&(x->mp)); x->mp_is_init = 1; x->x_clock = clock_new(x, (t_method)sigmp3play_tick); outlet_new(&x->x_obj, &s_signal); outlet_new(&x->x_obj, &s_signal); x->x_floatout = outlet_new(&x->x_obj, &s_float); x->x_bangout = outlet_new(&x->x_obj, &s_bang); inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("ft1")); x->x_canvas = canvas_getcurrent(); return (x); } static void sigmp3play_cleanup(t_sigmp3play *x) { x->file_is_open = 0; fclose(x->fh); x->play_state = 0; x->mp3_out_index = 0; x->mp_is_init = 0; ExitMP3(&(x->mp)); x->time1_bang0_handle = 0; clock_delay(x->x_clock, 0); } static int sigmp3play_read_frame_length_first(t_sigmp3play *x, int *frsz) { int framesize, lsf, bitrate_index, sampling_frequency, padding, mpeg25, lay, ret=MP3_EX; int version, syncword; unsigned long head; unsigned char chead; *frsz = 0; if((x->file_size) >= 4) { fread(&chead, 1, sizeof(char), x->fh); head = (unsigned int)chead; fread(&chead, 1, sizeof(char), x->fh); head <<= 8; head |= (unsigned int)chead; fread(&chead, 1, sizeof(char), x->fh); head <<= 8; head |= (unsigned int)chead; fread(&chead, 1, sizeof(char), x->fh); head <<= 8; head |= (unsigned int)chead; syncword = (head >> 20) & 0x0fff; version = ((head >> 19) & 0x01) ? 0 : 1; if((syncword & 0x01) == 0) version = 2; if(version == 0) x->samp_per_frame = 1152; else x->samp_per_frame = 576; if(head & (1<<20)) { lsf = (head & (1<<19)) ? 0x0 : 0x1; mpeg25 = 0; } else { lsf = 1; mpeg25 = 1; } lay = 4-((head>>17)&3); if(((head>>10)&0x3) == 0x3) { post("Stream error"); return(MP3_EX); } if(mpeg25) sampling_frequency = 6 + ((head>>10)&0x3); else sampling_frequency = ((head>>10)&0x3) + (lsf*3); x->mp3_sr = (int)iemmp3_freqs[sampling_frequency]; if(mpeg25) bitrate_index = ((head>>12)&0xf); bitrate_index = ((head>>12)&0xf); padding = ((head>>9)&0x1); if(!bitrate_index) { post("Free format not supported.\n"); return(MP3_EX); } switch(lay) { case 1: post("Layer I not supported!\n"); break; case 2: post("Layer II not supported!\n"); break; case 3: framesize = iemmp3_tabsel_123[lsf][2][bitrate_index]*144000; framesize /= (iemmp3_freqs[sampling_frequency] << lsf); framesize += padding; *frsz = framesize; ret = 0; break; default: post("Sorry, unknown layer type.\n"); break; } return(ret); } else { return(1); } } static int sigmp3play_read_frame_length_next(t_sigmp3play *x, int *frsz, int frame_counter) { int framesize, lsf, bitrate_index, sampling_frequency, *begframeseek=x->begframeseek; unsigned long head; unsigned char chead; *frsz = 0; if(begframeseek[frame_counter] < ((x->file_size) - 4)) { fread(&chead, 1, sizeof(char), x->fh); head = (unsigned int)chead; fread(&chead, 1, sizeof(char), x->fh); head <<= 8; head |= (unsigned int)chead; fread(&chead, 1, sizeof(char), x->fh); head <<= 8; head |= (unsigned int)chead; fread(&chead, 1, sizeof(char), x->fh); head <<= 8; head |= (unsigned int)chead; if(head & (1<<20)) { lsf = (head & (1<<19)) ? 0x0 : 0x1; sampling_frequency = ((head>>10)&0x3) + (lsf*3); } else { lsf = 1; sampling_frequency = 6 + ((head>>10)&0x3); } bitrate_index = ((head>>12)&0xf); framesize = iemmp3_tabsel_123[lsf][2][bitrate_index]*144000; framesize /= (iemmp3_freqs[sampling_frequency] << lsf); framesize += ((head>>9)&0x1); *frsz = framesize; return(0); } else return(1); } static int sigmp3play_calc_frames(t_sigmp3play *x) { int *begframeseek=x->begframeseek, i, maxframeseek, framesize, frame_counter; float length; fseek(x->fh,0,SEEK_SET); if(!sigmp3play_read_frame_length_first(x, &framesize)) { if(framesize <= 0) { return(MP3_EX); } i = framesize - 6; maxframeseek = (x->file_size) / i; if(!begframeseek) { x->begframeseek = (int *)getzbytes((maxframeseek)*sizeof(int)); x->maxframeseek = maxframeseek; } else { if(maxframeseek > (x->maxframeseek)) { freebytes(x->begframeseek, (x->maxframeseek)*sizeof(int)); x->begframeseek = (int *)getzbytes((maxframeseek)*sizeof(int)); x->maxframeseek = maxframeseek; } } begframeseek = x->begframeseek; begframeseek[0] = 0; begframeseek[1] = framesize; frame_counter = 1; /*x->curframeseek = maxframeseek;*/ fseek(x->fh, begframeseek[1], SEEK_SET); while(!sigmp3play_read_frame_length_next(x, &framesize, frame_counter)) { begframeseek[frame_counter+1] = begframeseek[frame_counter] + framesize; frame_counter++; fseek(x->fh, begframeseek[frame_counter], SEEK_SET); }; frame_counter--; length = (float)(frame_counter)*(float)(x->samp_per_frame) / (float)(x->mp3_sr); x->length_sec = length; x->time_factor = length / (float)(frame_counter); x->curframeseek = frame_counter; fseek(x->fh,0,SEEK_SET); return(MP3_OK); } else return(MP3_EX); } static void sigmp3play_do_open(t_sigmp3play *x, char *str, int calc_it) { int mp3_sr, obj_sr; int file_size, size, mp3_encode_return=MP3_OK, mp3_read_length, i, j, *begframeseek; static char *modes[4] = { "Stereo", "Joint-Stereo", "Dual-Channel", "Single-Channel" }; static char *layers[4] = { "Unknown" , "I", "II", "III" }; char completefilename[400]; if(x->file_is_open) { post("mp3play-ERROR: file is already open, please stop it first!"); } else if(*str == 0) { post("mp3play-ERROR: there is no filename to open"); } else { if(str[0] == '/') { strcpy(completefilename, str); } else if(((str[0] >= 'A')&&(str[0] <= 'Z')|| (str[0] >= 'a')&&(str[0] <= 'z'))&& (str[1] == ':')&&(str[2] == '/')) { strcpy(completefilename, str); } else { strcpy(completefilename, canvas_getdir(x->x_canvas)->s_name); strcat(completefilename, "/"); strcat(completefilename, str); } if((x->fh = fopen(completefilename, "rb")) == NULL) { post("mp3play-ERROR: cannot open %s", completefilename); } else { strcpy(x->filename, completefilename); fseek(x->fh,0,SEEK_END); file_size = (int)ftell(x->fh); x->file_size = file_size; if(!x->mp_is_init) { InitAgainMP3(&(x->mp)); x->mp_is_init = 1; } if(calc_it) mp3_encode_return = sigmp3play_calc_frames(x); if(mp3_encode_return == MP3_EX) { sigmp3play_cleanup(x); return; } if(x->frame_counter) x->frame_counter = (int)(x->offset_sec / x->time_factor); i = x->frame_counter; if(i > (x->curframeseek - 1)) i = x->curframeseek - 1; begframeseek = x->begframeseek; j = begframeseek[i]; fseek(x->fh,j,SEEK_SET); x->file_block_num = (file_size-j) / MY_MP3_MALLOC_IN_SIZE; x->file_remain = (file_size-j) - (x->file_block_num)*MY_MP3_MALLOC_IN_SIZE; if(x->file_block_num) { mp3_read_length = MY_MP3_MALLOC_IN_SIZE; x->file_block_num--; } else { mp3_read_length = x->file_remain; x->file_remain = 0; } if(mp3_read_length > 0) { fread(x->mp3inbuf, mp3_read_length, sizeof(char), x->fh); mp3_encode_return = decodeMP3(&(x->mp), x->mp3inbuf, mp3_read_length, x->mp3outbuf, MY_MP3_MALLOC_IN_SIZE2, &size); if(mp3_encode_return == MP3_EX) { sigmp3play_cleanup(x); return; } post ("MPEG %s, Layer: %s, Freq: %ld, mode: %s, modext: %d, BPF : %d", x->mp.fr.mpeg25 ? "2.5" : (x->mp.fr.lsf ? "2.0" : "1.0"), layers[x->mp.fr.lay],iemmp3_freqs[x->mp.fr.sampling_frequency], modes[x->mp.fr.mode],x->mp.fr.mode_ext,x->mp.fr.framesize+4); post ("Channels: %d, copyright: %s, original: %s, CRC: %s, emphasis: %d.", x->mp.fr.stereo,x->mp.fr.copyright?"Yes":"No", x->mp.fr.original?"Yes":"No",x->mp.fr.error_protection?"Yes":"No", x->mp.fr.emphasis); post ("Bitrate: %d Kbits/s, Extension value: %d", iemmp3_tabsel_123[x->mp.fr.lsf][x->mp.fr.lay-1] [x->mp.fr.bitrate_index],x->mp.fr.extension); post ("Original Soundfile-Length : %.3f sec.\n",x->length_sec); x->mp3_byterate = 128*iemmp3_tabsel_123[x->mp.fr.lsf][x->mp.fr.lay-1][x->mp.fr.bitrate_index]; /* 1024/8 */ if(x->mp.fr.stereo == 2) x->mp3_ch = 2; else if(x->mp.fr.stereo == 1) x->mp3_ch = 1; else { x->mp3_ch = 1; post("mp3_play~ WARNING: unknown number of channels : %d channels", x->mp.fr.stereo); } mp3_sr = (int)(iemmp3_freqs[x->mp.fr.sampling_frequency]); obj_sr = x->obj_sr; x->mp3_sr = mp3_sr; if(mp3_sr == obj_sr) { x->down = 0; } else if(2*mp3_sr == obj_sr) { x->down = 1; } else if(4*mp3_sr == obj_sr) { x->down = 2; } else if(mp3_sr == 2*obj_sr) { x->down = -1; } else if(mp3_sr == 4*obj_sr) { x->down = -2; } else { post("mp3_play~ WARNING: playing the filesamplerate of %d Hz at %d Hz", mp3_sr,obj_sr); x->down = 0; } if(mp3_encode_return == MP3_OK) { x->file_is_open = 1; x->mp3_encode_size = size * sizeof(char) / sizeof(short); } else { x->file_is_open = 0; x->mp3_out_index = 0; fclose(x->fh); } } else { x->file_is_open = 0; fclose(x->fh); } } x->play_state = 2; x->mp3_out_index = 0; } } static t_int *sigmp3play_perform(t_int *w) { t_sigmp3play *x = (t_sigmp3play *)(w[1]); t_float *out1 = (t_float *)(w[2]); t_float *out2 = (t_float *)(w[3]); int n = (int)(w[4]); short *ivec = (short *)(x->mp3outbuf); int size, mp3_encode_return, mp3_read_length, mp3_ch, down; float scale = x->scale, outa, outb; int mp3_out_index = x->mp3_out_index; if (!x->file_is_open) goto sigmp3play_labelzero; if (x->play_state != 1) goto sigmp3play_labelzero; if(mp3_out_index >= x->mp3_encode_size) { x->frame_counter++; x->time1_bang0_handle = 1; clock_delay(x->x_clock, 0); mp3_out_index = 0; mp3_encode_return = decodeMP3(&(x->mp), NULL, 0, x->mp3outbuf, MY_MP3_MALLOC_IN_SIZE2, &size); if(mp3_encode_return == MP3_OK) x->mp3_encode_size = size * sizeof(char) / sizeof(short); else if(mp3_encode_return == MP3_EX) { sigmp3play_cleanup(x); goto sigmp3play_labelzero; } else { if(x->file_block_num > 0) { mp3_read_length = MY_MP3_MALLOC_IN_SIZE; x->file_block_num--; } else if(x->file_remain > 0) { mp3_read_length = x->file_remain; x->file_remain = 0; } else { sigmp3play_cleanup(x); goto sigmp3play_labelzero; } fread(x->mp3inbuf, mp3_read_length, sizeof(char), x->fh); mp3_encode_return = decodeMP3(&(x->mp), x->mp3inbuf, mp3_read_length, x->mp3outbuf, MY_MP3_MALLOC_IN_SIZE2, &size); x->mp3_encode_size = size * sizeof(char) / sizeof(short); if(mp3_encode_return == MP3_EX) { sigmp3play_cleanup(x); goto sigmp3play_labelzero; } } } mp3_ch = x->mp3_ch; down = x->down; if(mp3_ch == 2) { if(down == 0) { ivec += mp3_out_index; x->mp3_out_index = mp3_out_index + 2*n; while (n--) { *out1++ = scale * (float)(*ivec++); *out2++ = scale * (float)(*ivec++); } } else if(down == 1) { ivec += mp3_out_index; x->mp3_out_index = mp3_out_index + n; n /= 2; while (n--) { outa = scale * (float)(*ivec++); outb = scale * (float)(*ivec++); *out1++ = outa; *out2++ = outb; *out1++ = outa; *out2++ = outb; } } else if(down == 2) { ivec += mp3_out_index; x->mp3_out_index = mp3_out_index + n/2; n /= 4; while (n--) { outa = scale * (float)(*ivec++); outb = scale * (float)(*ivec++); *out1++ = outa; *out2++ = outb; *out1++ = outa; *out2++ = outb; *out1++ = outa; *out2++ = outb; *out1++ = outa; *out2++ = outb; } } else if(down == -1) { ivec += mp3_out_index; x->mp3_out_index = mp3_out_index + 4*n; while (n--) { outa = scale * (float)(*ivec++); outb = scale * (float)(*ivec); ivec += 3; *out1++ = outa; *out2++ = outa; } } else if(down == -2) { ivec += mp3_out_index; x->mp3_out_index = mp3_out_index + 8*n; while (n--) { outa = scale * (float)(*ivec++); outb = scale * (float)(*ivec); ivec += 7; *out1++ = outa; *out2++ = outa; } } } else { if(down == 0) { ivec += mp3_out_index; x->mp3_out_index = mp3_out_index + n; while (n--) { outa = scale * (float)(*ivec++); *out1++ = outa; *out2++ = outa; } } else if(down == 1) { ivec += mp3_out_index; n /= 2; x->mp3_out_index = mp3_out_index + n; while (n--) { outa = scale * (float)(*ivec++); *out1++ = outa; *out2++ = outa; *out1++ = outa; *out2++ = outa; } } else if(down == 2) { ivec += mp3_out_index; n /= 4; x->mp3_out_index = mp3_out_index + n; while (n--) { outa = scale * (float)(*ivec++); *out1++ = outa; *out2++ = outa; *out1++ = outa; *out2++ = outa; *out1++ = outa; *out2++ = outa; *out1++ = outa; *out2++ = outa; } } else if(down == -1) { ivec += mp3_out_index; x->mp3_out_index = mp3_out_index + 2*n; while (n--) { outa = scale * (float)(*ivec); ivec += 2; *out1++ = outa; *out2++ = outa; } } else if(down == -2) { ivec += mp3_out_index; x->mp3_out_index = mp3_out_index + 4*n; while (n--) { outa = scale * (float)(*ivec); ivec += 4; *out1++ = outa; *out2++ = outa; } } } return (w+5); sigmp3play_labelzero: while (n--) { *out1++ = 0; *out2++ = 0; } return (w+5); } static void sigmp3play_dsp(t_sigmp3play *x, t_signal **sp) { x->obj_sr = (int)(sp[0]->s_sr); x->obj_n = (int)(sp[0]->s_n); dsp_add(sigmp3play_perform, 4, x, sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n); } static void sigmp3play_stop(t_sigmp3play *x) { if(x->file_is_open) { x->file_block_num = 0; x->file_remain = 0; } } static void sigmp3play_start(t_sigmp3play *x) { if(x->file_is_open) { x->play_state = 1; } } static void sigmp3play_ft1(t_sigmp3play *x, t_floatarg offset) { if(offset < 0.0) offset = 0.0; x->offset_sec = (float)offset; } static void sigmp3play_pause(t_sigmp3play *x) { if(x->file_is_open) { if(x->play_state == 0) x->play_state = 1; else if(x->play_state == 1) x->play_state = 0; } } static void sigmp3play_open(t_sigmp3play *x, t_symbol *s) { x->frame_counter = 0; sigmp3play_do_open(x, (char *)s->s_name, 1); } static void sigmp3play_open_again(t_sigmp3play *x) { x->frame_counter = 0; sigmp3play_do_open(x, x->filename, 0); } static void sigmp3play_open_at(t_sigmp3play *x, t_symbol *s) { x->frame_counter = 1; sigmp3play_do_open(x, (char *)s->s_name, 1); } static void sigmp3play_open_again_at(t_sigmp3play *x) { x->frame_counter = 1; sigmp3play_do_open(x, x->filename, 0); } static void sigmp3play_tick(t_sigmp3play *x) { if(x->time1_bang0_handle) { outlet_float(x->x_floatout, (float)(x->frame_counter)*(x->time_factor)); } else { outlet_bang(x->x_bangout); } } static void sigmp3play_free(t_sigmp3play *x) { if(x->mp_is_init) ExitMP3(&(x->mp)); if(x->begframeseek) freebytes(x->begframeseek, (x->maxframeseek)*sizeof(int)); freebytes(x->filename, MY_MP3_MALLOC_FN); freebytes(x->mp3outbuf, MY_MP3_MALLOC_OUT_SIZE); freebytes(x->mp3inbuf, MY_MP3_MALLOC_IN_SIZE); clock_free(x->x_clock); } void sigmp3play_setup(void) { sigmp3play_class = class_new(gensym("mp3play~"), (t_newmethod)sigmp3play_new, (t_method)sigmp3play_free, sizeof(t_sigmp3play), 0, 0); class_addmethod(sigmp3play_class, (t_method)sigmp3play_dsp, gensym("dsp"), 0); class_addmethod(sigmp3play_class, (t_method)sigmp3play_start, gensym("start"), 0); class_addmethod(sigmp3play_class, (t_method)sigmp3play_ft1, gensym("ft1"), A_FLOAT, 0); class_addmethod(sigmp3play_class, (t_method)sigmp3play_stop, gensym("stop"), 0); class_addmethod(sigmp3play_class, (t_method)sigmp3play_pause, gensym("pause"), 0); class_addmethod(sigmp3play_class, (t_method)sigmp3play_open_again_at, gensym("open_again_at"), 0); class_addmethod(sigmp3play_class, (t_method)sigmp3play_open, gensym("open"), A_DEFSYM, 0); class_addmethod(sigmp3play_class, (t_method)sigmp3play_open_again, gensym("open_again"), 0); class_addmethod(sigmp3play_class, (t_method)sigmp3play_open_at, gensym("open_at"), A_DEFSYM, 0); class_sethelpsymbol(sigmp3play_class, gensym("iemhelp/help-mp3play~")); /*post("\nmp3play~ written by thomas musil & norbert math\nV 0.1 iem graz austria 05 2000\n");*/ }