From e2de64d6f1beb9e492daf5b886e19933c1fa41dd Mon Sep 17 00:00:00 2001 From: toma Date: Wed, 25 Nov 2009 17:56:58 +0000 Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features. BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da --- mpg123_artsplugin/mpg123/dct64_i486.c | 322 ++++++++++++++++++++++++++++++++++ 1 file changed, 322 insertions(+) create mode 100644 mpg123_artsplugin/mpg123/dct64_i486.c (limited to 'mpg123_artsplugin/mpg123/dct64_i486.c') diff --git a/mpg123_artsplugin/mpg123/dct64_i486.c b/mpg123_artsplugin/mpg123/dct64_i486.c new file mode 100644 index 00000000..b8f5d08b --- /dev/null +++ b/mpg123_artsplugin/mpg123/dct64_i486.c @@ -0,0 +1,322 @@ + +/* Discrete Cosine Tansform (DCT) for subband synthesis. + * + * This code is optimized for 80486. It should be compiled with gcc + * 2.7.2 or higher. + * + * Note: This code does not give the necessary accuracy. Moreover, no + * overflow test are done. + * + * (c) 1998 Fabrice Bellard. + * + * GPL clean + */ + +#include "mpg123.h" + +#define COS_0_0 16403 +#define COS_0_1 16563 +#define COS_0_2 16890 +#define COS_0_3 17401 +#define COS_0_4 18124 +#define COS_0_5 19101 +#define COS_0_6 20398 +#define COS_0_7 22112 +#define COS_0_8 24396 +#define COS_0_9 27503 +#define COS_0_10 31869 +#define COS_0_11 38320 +#define COS_0_12 48633 +#define COS_0_13 67429 +#define COS_0_14 111660 +#define COS_0_15 333906 +#define COS_1_0 16463 +#define COS_1_1 17121 +#define COS_1_2 18577 +#define COS_1_3 21195 +#define COS_1_4 25826 +#define COS_1_5 34756 +#define COS_1_6 56441 +#define COS_1_7 167154 +#define COS_2_0 16704 +#define COS_2_1 19704 +#define COS_2_2 29490 +#define COS_2_3 83981 +#define COS_3_0 17733 +#define COS_3_1 42813 +#define COS_4_0 23170 + +#define SETOUT(out,n,expr) out[FIR_BUFFER_SIZE*(n)]=(expr) +#define MUL(a,b) (((a)*(b)) >> 15) +#define MULL(a,b) (((long long)(a)*(long long)(b)) >> 15) +#ifdef REAL_IS_FIXED +#define TOINT(a) ((a) * 32768 / (int)REAL_FACTOR) +#else +#define TOINT(a) ((int)((a)*32768.0)) +#endif + +void dct64_1_486(int *out0,int *out1,int *b1,int *b2) +{ + b1[0x00] = b2[0x00] + b2[0x1F]; + b1[0x1F] = MUL((b2[0x00] - b2[0x1F]),COS_0_0); + + b1[0x01] = b2[0x01] + b2[0x1E]; + b1[0x1E] = MUL((b2[0x01] - b2[0x1E]),COS_0_1); + + b1[0x02] = b2[0x02] + b2[0x1D]; + b1[0x1D] = MUL((b2[0x02] - b2[0x1D]),COS_0_2); + + b1[0x03] = b2[0x03] + b2[0x1C]; + b1[0x1C] = MUL((b2[0x03] - b2[0x1C]),COS_0_3); + + b1[0x04] = b2[0x04] + b2[0x1B]; + b1[0x1B] = MUL((b2[0x04] - b2[0x1B]),COS_0_4); + + b1[0x05] = b2[0x05] + b2[0x1A]; + b1[0x1A] = MUL((b2[0x05] - b2[0x1A]),COS_0_5); + + b1[0x06] = b2[0x06] + b2[0x19]; + b1[0x19] = MUL((b2[0x06] - b2[0x19]),COS_0_6); + + b1[0x07] = b2[0x07] + b2[0x18]; + b1[0x18] = MUL((b2[0x07] - b2[0x18]),COS_0_7); + + b1[0x08] = b2[0x08] + b2[0x17]; + b1[0x17] = MUL((b2[0x08] - b2[0x17]),COS_0_8); + + b1[0x09] = b2[0x09] + b2[0x16]; + b1[0x16] = MUL((b2[0x09] - b2[0x16]),COS_0_9); + + b1[0x0A] = b2[0x0A] + b2[0x15]; + b1[0x15] = MUL((b2[0x0A] - b2[0x15]),COS_0_10); + + b1[0x0B] = b2[0x0B] + b2[0x14]; + b1[0x14] = MUL((b2[0x0B] - b2[0x14]),COS_0_11); + + b1[0x0C] = b2[0x0C] + b2[0x13]; + b1[0x13] = MUL((b2[0x0C] - b2[0x13]),COS_0_12); + + b1[0x0D] = b2[0x0D] + b2[0x12]; + b1[0x12] = MULL((b2[0x0D] - b2[0x12]),COS_0_13); + + b1[0x0E] = b2[0x0E] + b2[0x11]; + b1[0x11] = MULL((b2[0x0E] - b2[0x11]),COS_0_14); + + b1[0x0F] = b2[0x0F] + b2[0x10]; + b1[0x10] = MULL((b2[0x0F] - b2[0x10]),COS_0_15); + + + b2[0x00] = b1[0x00] + b1[0x0F]; + b2[0x0F] = MUL((b1[0x00] - b1[0x0F]),COS_1_0); + b2[0x01] = b1[0x01] + b1[0x0E]; + b2[0x0E] = MUL((b1[0x01] - b1[0x0E]),COS_1_1); + b2[0x02] = b1[0x02] + b1[0x0D]; + b2[0x0D] = MUL((b1[0x02] - b1[0x0D]),COS_1_2); + b2[0x03] = b1[0x03] + b1[0x0C]; + b2[0x0C] = MUL((b1[0x03] - b1[0x0C]),COS_1_3); + b2[0x04] = b1[0x04] + b1[0x0B]; + b2[0x0B] = MUL((b1[0x04] - b1[0x0B]),COS_1_4); + b2[0x05] = b1[0x05] + b1[0x0A]; + b2[0x0A] = MUL((b1[0x05] - b1[0x0A]),COS_1_5); + b2[0x06] = b1[0x06] + b1[0x09]; + b2[0x09] = MUL((b1[0x06] - b1[0x09]),COS_1_6); + b2[0x07] = b1[0x07] + b1[0x08]; + b2[0x08] = MULL((b1[0x07] - b1[0x08]),COS_1_7); + + b2[0x10] = b1[0x10] + b1[0x1F]; + b2[0x1F] = MUL((b1[0x1F] - b1[0x10]),COS_1_0); + b2[0x11] = b1[0x11] + b1[0x1E]; + b2[0x1E] = MUL((b1[0x1E] - b1[0x11]),COS_1_1); + b2[0x12] = b1[0x12] + b1[0x1D]; + b2[0x1D] = MUL((b1[0x1D] - b1[0x12]),COS_1_2); + b2[0x13] = b1[0x13] + b1[0x1C]; + b2[0x1C] = MUL((b1[0x1C] - b1[0x13]),COS_1_3); + b2[0x14] = b1[0x14] + b1[0x1B]; + b2[0x1B] = MUL((b1[0x1B] - b1[0x14]),COS_1_4); + b2[0x15] = b1[0x15] + b1[0x1A]; + b2[0x1A] = MUL((b1[0x1A] - b1[0x15]),COS_1_5); + b2[0x16] = b1[0x16] + b1[0x19]; + b2[0x19] = MUL((b1[0x19] - b1[0x16]),COS_1_6); + b2[0x17] = b1[0x17] + b1[0x18]; + b2[0x18] = MULL((b1[0x18] - b1[0x17]),COS_1_7); + + + b1[0x00] = b2[0x00] + b2[0x07]; + b1[0x07] = MUL((b2[0x00] - b2[0x07]),COS_2_0); + b1[0x01] = b2[0x01] + b2[0x06]; + b1[0x06] = MUL((b2[0x01] - b2[0x06]),COS_2_1); + b1[0x02] = b2[0x02] + b2[0x05]; + b1[0x05] = MUL((b2[0x02] - b2[0x05]),COS_2_2); + b1[0x03] = b2[0x03] + b2[0x04]; + b1[0x04] = MULL((b2[0x03] - b2[0x04]),COS_2_3); + + b1[0x08] = b2[0x08] + b2[0x0F]; + b1[0x0F] = MUL((b2[0x0F] - b2[0x08]),COS_2_0); + b1[0x09] = b2[0x09] + b2[0x0E]; + b1[0x0E] = MUL((b2[0x0E] - b2[0x09]),COS_2_1); + b1[0x0A] = b2[0x0A] + b2[0x0D]; + b1[0x0D] = MUL((b2[0x0D] - b2[0x0A]),COS_2_2); + b1[0x0B] = b2[0x0B] + b2[0x0C]; + b1[0x0C] = MULL((b2[0x0C] - b2[0x0B]),COS_2_3); + + b1[0x10] = b2[0x10] + b2[0x17]; + b1[0x17] = MUL((b2[0x10] - b2[0x17]),COS_2_0); + b1[0x11] = b2[0x11] + b2[0x16]; + b1[0x16] = MUL((b2[0x11] - b2[0x16]),COS_2_1); + b1[0x12] = b2[0x12] + b2[0x15]; + b1[0x15] = MUL((b2[0x12] - b2[0x15]),COS_2_2); + b1[0x13] = b2[0x13] + b2[0x14]; + b1[0x14] = MULL((b2[0x13] - b2[0x14]),COS_2_3); + + b1[0x18] = b2[0x18] + b2[0x1F]; + b1[0x1F] = MUL((b2[0x1F] - b2[0x18]),COS_2_0); + b1[0x19] = b2[0x19] + b2[0x1E]; + b1[0x1E] = MUL((b2[0x1E] - b2[0x19]),COS_2_1); + b1[0x1A] = b2[0x1A] + b2[0x1D]; + b1[0x1D] = MUL((b2[0x1D] - b2[0x1A]),COS_2_2); + b1[0x1B] = b2[0x1B] + b2[0x1C]; + b1[0x1C] = MULL((b2[0x1C] - b2[0x1B]),COS_2_3); + + + b2[0x00] = b1[0x00] + b1[0x03]; + b2[0x03] = MUL((b1[0x00] - b1[0x03]),COS_3_0); + b2[0x01] = b1[0x01] + b1[0x02]; + b2[0x02] = MUL((b1[0x01] - b1[0x02]),COS_3_1); + + b2[0x04] = b1[0x04] + b1[0x07]; + b2[0x07] = MUL((b1[0x07] - b1[0x04]),COS_3_0); + b2[0x05] = b1[0x05] + b1[0x06]; + b2[0x06] = MUL((b1[0x06] - b1[0x05]),COS_3_1); + + b2[0x08] = b1[0x08] + b1[0x0B]; + b2[0x0B] = MUL((b1[0x08] - b1[0x0B]),COS_3_0); + b2[0x09] = b1[0x09] + b1[0x0A]; + b2[0x0A] = MUL((b1[0x09] - b1[0x0A]),COS_3_1); + + b2[0x0C] = b1[0x0C] + b1[0x0F]; + b2[0x0F] = MUL((b1[0x0F] - b1[0x0C]),COS_3_0); + b2[0x0D] = b1[0x0D] + b1[0x0E]; + b2[0x0E] = MUL((b1[0x0E] - b1[0x0D]),COS_3_1); + + b2[0x10] = b1[0x10] + b1[0x13]; + b2[0x13] = MUL((b1[0x10] - b1[0x13]),COS_3_0); + b2[0x11] = b1[0x11] + b1[0x12]; + b2[0x12] = MUL((b1[0x11] - b1[0x12]),COS_3_1); + + b2[0x14] = b1[0x14] + b1[0x17]; + b2[0x17] = MUL((b1[0x17] - b1[0x14]),COS_3_0); + b2[0x15] = b1[0x15] + b1[0x16]; + b2[0x16] = MUL((b1[0x16] - b1[0x15]),COS_3_1); + + b2[0x18] = b1[0x18] + b1[0x1B]; + b2[0x1B] = MUL((b1[0x18] - b1[0x1B]),COS_3_0); + b2[0x19] = b1[0x19] + b1[0x1A]; + b2[0x1A] = MUL((b1[0x19] - b1[0x1A]),COS_3_1); + + b2[0x1C] = b1[0x1C] + b1[0x1F]; + b2[0x1F] = MUL((b1[0x1F] - b1[0x1C]),COS_3_0); + b2[0x1D] = b1[0x1D] + b1[0x1E]; + b2[0x1E] = MUL((b1[0x1E] - b1[0x1D]),COS_3_1); + + { + int i; + for(i=0;i<32;i+=4) { + b1[i+0x00] = b2[i+0x00] + b2[i+0x01]; + b1[i+0x01] = MUL((b2[i+0x00] - b2[i+0x01]),COS_4_0); + b1[i+0x02] = b2[i+0x02] + b2[i+0x03]; + b1[i+0x03] = MUL((b2[i+0x03] - b2[i+0x02]),COS_4_0); + } + } + + b1[0x02] += b1[0x03]; + b1[0x06] += b1[0x07]; + b1[0x04] += b1[0x06]; + b1[0x06] += b1[0x05]; + b1[0x05] += b1[0x07]; + + b1[0x0A] += b1[0x0B]; + b1[0x0E] += b1[0x0F]; + b1[0x0C] += b1[0x0E]; + b1[0x0E] += b1[0x0D]; + b1[0x0D] += b1[0x0F]; + + b1[0x12] += b1[0x13]; + b1[0x16] += b1[0x17]; + b1[0x14] += b1[0x16]; + b1[0x16] += b1[0x15]; + b1[0x15] += b1[0x17]; + + b1[0x1A] += b1[0x1B]; + b1[0x1E] += b1[0x1F]; + b1[0x1C] += b1[0x1E]; + b1[0x1E] += b1[0x1D]; + b1[0x1D] += b1[0x1F]; + + SETOUT(out0,16,b1[0x00]); + SETOUT(out0,12,b1[0x04]); + SETOUT(out0, 8,b1[0x02]); + SETOUT(out0, 4,b1[0x06]); + SETOUT(out0, 0,b1[0x01]); + SETOUT(out1, 0,b1[0x01]); + SETOUT(out1, 4,b1[0x05]); + SETOUT(out1, 8,b1[0x03]); + SETOUT(out1,12,b1[0x07]); + + b1[0x08] += b1[0x0C]; + SETOUT(out0,14,b1[0x08]); + b1[0x0C] += b1[0x0a]; + SETOUT(out0,10,b1[0x0C]); + b1[0x0A] += b1[0x0E]; + SETOUT(out0, 6,b1[0x0A]); + b1[0x0E] += b1[0x09]; + SETOUT(out0, 2,b1[0x0E]); + b1[0x09] += b1[0x0D]; + SETOUT(out1, 2,b1[0x09]); + b1[0x0D] += b1[0x0B]; + SETOUT(out1, 6,b1[0x0D]); + b1[0x0B] += b1[0x0F]; + SETOUT(out1,10,b1[0x0B]); + SETOUT(out1,14,b1[0x0F]); + + b1[0x18] += b1[0x1C]; + SETOUT(out0,15,b1[0x10] + b1[0x18]); + SETOUT(out0,13,b1[0x18] + b1[0x14]); + b1[0x1C] += b1[0x1a]; + SETOUT(out0,11,b1[0x14] + b1[0x1C]); + SETOUT(out0, 9,b1[0x1C] + b1[0x12]); + b1[0x1A] += b1[0x1E]; + SETOUT(out0, 7,b1[0x12] + b1[0x1A]); + SETOUT(out0, 5,b1[0x1A] + b1[0x16]); + b1[0x1E] += b1[0x19]; + SETOUT(out0, 3,b1[0x16] + b1[0x1E]); + SETOUT(out0, 1,b1[0x1E] + b1[0x11]); + b1[0x19] += b1[0x1D]; + SETOUT(out1, 1,b1[0x11] + b1[0x19]); + SETOUT(out1, 3,b1[0x19] + b1[0x15]); + b1[0x1D] += b1[0x1B]; + SETOUT(out1, 5,b1[0x15] + b1[0x1D]); + SETOUT(out1, 7,b1[0x1D] + b1[0x13]); + b1[0x1B] += b1[0x1F]; + SETOUT(out1, 9,b1[0x13] + b1[0x1B]); + SETOUT(out1,11,b1[0x1B] + b1[0x17]); + SETOUT(out1,13,b1[0x17] + b1[0x1F]); + SETOUT(out1,15,b1[0x1F]); +} + + +/* + * the call via dct64 is a trick to force GCC to use + * (new) registers for the b1,b2 pointer to the bufs[xx] field + */ +void dct64_486(int *a,int *b,real *samples) +{ + int bufs[64]; + int i; + + for(i=0;i<32;i++) { + bufs[i+32]=TOINT(samples[i]); + } + + dct64_1_486(a,b,bufs,bufs+0x20); +} + -- cgit v1.2.1