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comparison decoders/mpglib/layer3.c @ 279:52b9f37998db

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Removed global state variable; should be thread safe now.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 14 Mar 2002 16:38:59 +0000
parents 9e7f9e09ea0e
children ad4c8f34136a
comparison
equal deleted inserted replaced
278:dfe4a46f88f7 279:52b9f37998db
14 14
15 #include "mpg123_sdlsound.h" 15 #include "mpg123_sdlsound.h"
16 #include "mpglib_sdlsound.h" 16 #include "mpglib_sdlsound.h"
17 #include "huffman.h" 17 #include "huffman.h"
18 18
19 extern struct mpstr *gmp;
20
21 #define MPEG1 19 #define MPEG1
22
23 20
24 static real ispow[8207]; 21 static real ispow[8207];
25 static real aa_ca[8],aa_cs[8]; 22 static real aa_ca[8],aa_cs[8];
26 static real COS1[12][6]; 23 static real COS1[12][6];
27 static real win[4][36]; 24 static real win[4][36];
1817 1814
1818 /* 1815 /*
1819 * III_hybrid 1816 * III_hybrid
1820 */ 1817 */
1821 static void III_hybrid(real fsIn[SBLIMIT][SSLIMIT],real tsOut[SSLIMIT][SBLIMIT], 1818 static void III_hybrid(real fsIn[SBLIMIT][SSLIMIT],real tsOut[SSLIMIT][SBLIMIT],
1822 int ch,struct gr_info_s *gr_info) 1819 int ch,struct gr_info_s *gr_info,struct mpstr *mp)
1823 { 1820 {
1824 real *tspnt = (real *) tsOut; 1821 real *tspnt = (real *) tsOut;
1825 real (*block)[2][SBLIMIT*SSLIMIT] = gmp->hybrid_block; 1822 real (*block)[2][SBLIMIT*SSLIMIT] = mp->hybrid_block;
1826 int *blc = gmp->hybrid_blc; 1823 int *blc = mp->hybrid_blc;
1827 real *rawout1,*rawout2; 1824 real *rawout1,*rawout2;
1828 int bt; 1825 int bt;
1829 int sb = 0; 1826 int sb = 0;
1830 1827
1831 { 1828 {
1868 } 1865 }
1869 1866
1870 /* 1867 /*
1871 * main layer3 handler 1868 * main layer3 handler
1872 */ 1869 */
1873 int do_layer3(struct frame *fr,unsigned char *pcm_sample,int *pcm_point) 1870 int do_layer3(struct frame *fr,unsigned char *pcm_sample,int *pcm_point,struct mpstr *mp)
1874 { 1871 {
1875 int gr, ch, ss,clip=0; 1872 int gr, ch, ss,clip=0;
1876 int scalefacs[2][39]; /* max 39 for short[13][3] mode, mixed: 38, long: 22 */ 1873 int scalefacs[2][39]; /* max 39 for short[13][3] mode, mixed: 38, long: 22 */
1877 struct III_sideinfo sideinfo; 1874 struct III_sideinfo sideinfo;
1878 int stereo = fr->stereo; 1875 int stereo = fr->stereo;
1910 #else 1907 #else
1911 Sound_SetError("MPGLIB: Not supported!"); 1908 Sound_SetError("MPGLIB: Not supported!");
1912 #endif 1909 #endif
1913 } 1910 }
1914 1911
1915 if(set_pointer(sideinfo.main_data_begin) == MP3_ERR) 1912 if(set_pointer(sideinfo.main_data_begin,mp) == MP3_ERR)
1916 return -1; 1913 return -1;
1917 1914
1918 for (gr=0;gr<granules;gr++) 1915 for (gr=0;gr<granules;gr++)
1919 { 1916 {
1920 real hybridIn[2][SBLIMIT][SSLIMIT]; 1917 real hybridIn[2][SBLIMIT][SSLIMIT];
1927 part2bits = III_get_scale_factors_2(scalefacs[0],gr_info,0); 1924 part2bits = III_get_scale_factors_2(scalefacs[0],gr_info,0);
1928 else { 1925 else {
1929 #ifdef MPEG1 1926 #ifdef MPEG1
1930 part2bits = III_get_scale_factors_1(scalefacs[0],gr_info); 1927 part2bits = III_get_scale_factors_1(scalefacs[0],gr_info);
1931 #else 1928 #else
1932 Sound_SetError("MPGLIB: Not supported!"); 1929 Sound_SetError("MPGLIB: Not supported!");
1933 #endif 1930 #endif
1934 } 1931 }
1935 if(III_dequantize_sample(hybridIn[0], scalefacs[0],gr_info,sfreq,part2bits)) 1932 if(III_dequantize_sample(hybridIn[0], scalefacs[0],gr_info,sfreq,part2bits))
1936 return clip; 1933 return clip;
1937 } 1934 }
1942 part2bits = III_get_scale_factors_2(scalefacs[1],gr_info,i_stereo); 1939 part2bits = III_get_scale_factors_2(scalefacs[1],gr_info,i_stereo);
1943 else { 1940 else {
1944 #ifdef MPEG1 1941 #ifdef MPEG1
1945 part2bits = III_get_scale_factors_1(scalefacs[1],gr_info); 1942 part2bits = III_get_scale_factors_1(scalefacs[1],gr_info);
1946 #else 1943 #else
1947 Sound_SetError("MPGLIB: Not supported!"); 1944 Sound_SetError("MPGLIB: Not supported!");
1948 #endif 1945 #endif
1949 } 1946 }
1950 1947
1951 if(III_dequantize_sample(hybridIn[1],scalefacs[1],gr_info,sfreq,part2bits)) 1948 if(III_dequantize_sample(hybridIn[1],scalefacs[1],gr_info,sfreq,part2bits))
1952 return clip; 1949 return clip;
1993 } 1990 }
1994 1991
1995 for(ch=0;ch<stereo1;ch++) { 1992 for(ch=0;ch<stereo1;ch++) {
1996 struct gr_info_s *gr_info = &(sideinfo.ch[ch].gr[gr]); 1993 struct gr_info_s *gr_info = &(sideinfo.ch[ch].gr[gr]);
1997 III_antialias(hybridIn[ch],gr_info); 1994 III_antialias(hybridIn[ch],gr_info);
1998 III_hybrid(hybridIn[ch], hybridOut[ch], ch,gr_info); 1995 III_hybrid(hybridIn[ch], hybridOut[ch], ch,gr_info,mp);
1999 } 1996 }
2000 1997
2001 for(ss=0;ss<SSLIMIT;ss++) { 1998 for(ss=0;ss<SSLIMIT;ss++) {
2002 if(single >= 0) { 1999 if(single >= 0) {
2003 clip += synth_1to1_mono(hybridOut[0][ss],pcm_sample,pcm_point); 2000 clip += synth_1to1_mono(hybridOut[0][ss],pcm_sample,pcm_point,mp);
2004 } 2001 }
2005 else { 2002 else {
2006 int p1 = *pcm_point; 2003 int p1 = *pcm_point;
2007 clip += synth_1to1(hybridOut[0][ss],0,pcm_sample,&p1); 2004 clip += synth_1to1(hybridOut[0][ss],0,pcm_sample,&p1,mp);
2008 clip += synth_1to1(hybridOut[1][ss],1,pcm_sample,pcm_point); 2005 clip += synth_1to1(hybridOut[1][ss],1,pcm_sample,pcm_point,mp);
2009 } 2006 }
2010 } 2007 }
2011 } 2008 }
2012 2009
2013 return clip; 2010 return clip;