From d34041569e71fc9bd772354e94dc9d16061072a5 Mon Sep 17 00:00:00 2001 From: arpi_esp Date: Sat, 24 Feb 2001 20:28:24 +0000 Subject: Initial revision git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2 b3059339-0415-0410-9bf9-f77b7e298cf2 --- mp3lib/dct64_i386.c | 314 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 314 insertions(+) create mode 100644 mp3lib/dct64_i386.c (limited to 'mp3lib/dct64_i386.c') diff --git a/mp3lib/dct64_i386.c b/mp3lib/dct64_i386.c new file mode 100644 index 0000000000..845502159f --- /dev/null +++ b/mp3lib/dct64_i386.c @@ -0,0 +1,314 @@ + +/* + * Discrete Cosine Tansform (DCT) for subband synthesis + * optimized for machines with no auto-increment. + * The performance is highly compiler dependend. Maybe + * the mpg123_dct64.c version for 'normal' processor may be faster + * even for Intel processors. + */ + +#include "mpg123.h" + +static void mpg123_dct64_1(real * out0, real * out1, real * b1, real * b2, real * samples) +{ + + { + register real *costab = pnts[0]; + + b1[0x00] = samples[0x00] + samples[0x1F]; + b1[0x1F] = (samples[0x00] - samples[0x1F]) * costab[0x0]; + + b1[0x01] = samples[0x01] + samples[0x1E]; + b1[0x1E] = (samples[0x01] - samples[0x1E]) * costab[0x1]; + + b1[0x02] = samples[0x02] + samples[0x1D]; + b1[0x1D] = (samples[0x02] - samples[0x1D]) * costab[0x2]; + + b1[0x03] = samples[0x03] + samples[0x1C]; + b1[0x1C] = (samples[0x03] - samples[0x1C]) * costab[0x3]; + + b1[0x04] = samples[0x04] + samples[0x1B]; + b1[0x1B] = (samples[0x04] - samples[0x1B]) * costab[0x4]; + + b1[0x05] = samples[0x05] + samples[0x1A]; + b1[0x1A] = (samples[0x05] - samples[0x1A]) * costab[0x5]; + + b1[0x06] = samples[0x06] + samples[0x19]; + b1[0x19] = (samples[0x06] - samples[0x19]) * costab[0x6]; + + b1[0x07] = samples[0x07] + samples[0x18]; + b1[0x18] = (samples[0x07] - samples[0x18]) * costab[0x7]; + + b1[0x08] = samples[0x08] + samples[0x17]; + b1[0x17] = (samples[0x08] - samples[0x17]) * costab[0x8]; + + b1[0x09] = samples[0x09] + samples[0x16]; + b1[0x16] = (samples[0x09] - samples[0x16]) * costab[0x9]; + + b1[0x0A] = samples[0x0A] + samples[0x15]; + b1[0x15] = (samples[0x0A] - samples[0x15]) * costab[0xA]; + + b1[0x0B] = samples[0x0B] + samples[0x14]; + b1[0x14] = (samples[0x0B] - samples[0x14]) * costab[0xB]; + + b1[0x0C] = samples[0x0C] + samples[0x13]; + b1[0x13] = (samples[0x0C] - samples[0x13]) * costab[0xC]; + + b1[0x0D] = samples[0x0D] + samples[0x12]; + b1[0x12] = (samples[0x0D] - samples[0x12]) * costab[0xD]; + + b1[0x0E] = samples[0x0E] + samples[0x11]; + b1[0x11] = (samples[0x0E] - samples[0x11]) * costab[0xE]; + + b1[0x0F] = samples[0x0F] + samples[0x10]; + b1[0x10] = (samples[0x0F] - samples[0x10]) * costab[0xF]; + } + + { + register real *costab = pnts[1]; + + b2[0x00] = b1[0x00] + b1[0x0F]; + b2[0x0F] = (b1[0x00] - b1[0x0F]) * costab[0]; + b2[0x01] = b1[0x01] + b1[0x0E]; + b2[0x0E] = (b1[0x01] - b1[0x0E]) * costab[1]; + b2[0x02] = b1[0x02] + b1[0x0D]; + b2[0x0D] = (b1[0x02] - b1[0x0D]) * costab[2]; + b2[0x03] = b1[0x03] + b1[0x0C]; + b2[0x0C] = (b1[0x03] - b1[0x0C]) * costab[3]; + b2[0x04] = b1[0x04] + b1[0x0B]; + b2[0x0B] = (b1[0x04] - b1[0x0B]) * costab[4]; + b2[0x05] = b1[0x05] + b1[0x0A]; + b2[0x0A] = (b1[0x05] - b1[0x0A]) * costab[5]; + b2[0x06] = b1[0x06] + b1[0x09]; + b2[0x09] = (b1[0x06] - b1[0x09]) * costab[6]; + b2[0x07] = b1[0x07] + b1[0x08]; + b2[0x08] = (b1[0x07] - b1[0x08]) * costab[7]; + + b2[0x10] = b1[0x10] + b1[0x1F]; + b2[0x1F] = (b1[0x1F] - b1[0x10]) * costab[0]; + b2[0x11] = b1[0x11] + b1[0x1E]; + b2[0x1E] = (b1[0x1E] - b1[0x11]) * costab[1]; + b2[0x12] = b1[0x12] + b1[0x1D]; + b2[0x1D] = (b1[0x1D] - b1[0x12]) * costab[2]; + b2[0x13] = b1[0x13] + b1[0x1C]; + b2[0x1C] = (b1[0x1C] - b1[0x13]) * costab[3]; + b2[0x14] = b1[0x14] + b1[0x1B]; + b2[0x1B] = (b1[0x1B] - b1[0x14]) * costab[4]; + b2[0x15] = b1[0x15] + b1[0x1A]; + b2[0x1A] = (b1[0x1A] - b1[0x15]) * costab[5]; + b2[0x16] = b1[0x16] + b1[0x19]; + b2[0x19] = (b1[0x19] - b1[0x16]) * costab[6]; + b2[0x17] = b1[0x17] + b1[0x18]; + b2[0x18] = (b1[0x18] - b1[0x17]) * costab[7]; + } + + { + register real *costab = pnts[2]; + + b1[0x00] = b2[0x00] + b2[0x07]; + b1[0x07] = (b2[0x00] - b2[0x07]) * costab[0]; + b1[0x01] = b2[0x01] + b2[0x06]; + b1[0x06] = (b2[0x01] - b2[0x06]) * costab[1]; + b1[0x02] = b2[0x02] + b2[0x05]; + b1[0x05] = (b2[0x02] - b2[0x05]) * costab[2]; + b1[0x03] = b2[0x03] + b2[0x04]; + b1[0x04] = (b2[0x03] - b2[0x04]) * costab[3]; + + b1[0x08] = b2[0x08] + b2[0x0F]; + b1[0x0F] = (b2[0x0F] - b2[0x08]) * costab[0]; + b1[0x09] = b2[0x09] + b2[0x0E]; + b1[0x0E] = (b2[0x0E] - b2[0x09]) * costab[1]; + b1[0x0A] = b2[0x0A] + b2[0x0D]; + b1[0x0D] = (b2[0x0D] - b2[0x0A]) * costab[2]; + b1[0x0B] = b2[0x0B] + b2[0x0C]; + b1[0x0C] = (b2[0x0C] - b2[0x0B]) * costab[3]; + + b1[0x10] = b2[0x10] + b2[0x17]; + b1[0x17] = (b2[0x10] - b2[0x17]) * costab[0]; + b1[0x11] = b2[0x11] + b2[0x16]; + b1[0x16] = (b2[0x11] - b2[0x16]) * costab[1]; + b1[0x12] = b2[0x12] + b2[0x15]; + b1[0x15] = (b2[0x12] - b2[0x15]) * costab[2]; + b1[0x13] = b2[0x13] + b2[0x14]; + b1[0x14] = (b2[0x13] - b2[0x14]) * costab[3]; + + b1[0x18] = b2[0x18] + b2[0x1F]; + b1[0x1F] = (b2[0x1F] - b2[0x18]) * costab[0]; + b1[0x19] = b2[0x19] + b2[0x1E]; + b1[0x1E] = (b2[0x1E] - b2[0x19]) * costab[1]; + b1[0x1A] = b2[0x1A] + b2[0x1D]; + b1[0x1D] = (b2[0x1D] - b2[0x1A]) * costab[2]; + b1[0x1B] = b2[0x1B] + b2[0x1C]; + b1[0x1C] = (b2[0x1C] - b2[0x1B]) * costab[3]; + } + + { + register real const cos0 = pnts[3][0]; + register real const cos1 = pnts[3][1]; + + b2[0x00] = b1[0x00] + b1[0x03]; + b2[0x03] = (b1[0x00] - b1[0x03]) * cos0; + b2[0x01] = b1[0x01] + b1[0x02]; + b2[0x02] = (b1[0x01] - b1[0x02]) * cos1; + + b2[0x04] = b1[0x04] + b1[0x07]; + b2[0x07] = (b1[0x07] - b1[0x04]) * cos0; + b2[0x05] = b1[0x05] + b1[0x06]; + b2[0x06] = (b1[0x06] - b1[0x05]) * cos1; + + b2[0x08] = b1[0x08] + b1[0x0B]; + b2[0x0B] = (b1[0x08] - b1[0x0B]) * cos0; + b2[0x09] = b1[0x09] + b1[0x0A]; + b2[0x0A] = (b1[0x09] - b1[0x0A]) * cos1; + + b2[0x0C] = b1[0x0C] + b1[0x0F]; + b2[0x0F] = (b1[0x0F] - b1[0x0C]) * cos0; + b2[0x0D] = b1[0x0D] + b1[0x0E]; + b2[0x0E] = (b1[0x0E] - b1[0x0D]) * cos1; + + b2[0x10] = b1[0x10] + b1[0x13]; + b2[0x13] = (b1[0x10] - b1[0x13]) * cos0; + b2[0x11] = b1[0x11] + b1[0x12]; + b2[0x12] = (b1[0x11] - b1[0x12]) * cos1; + + b2[0x14] = b1[0x14] + b1[0x17]; + b2[0x17] = (b1[0x17] - b1[0x14]) * cos0; + b2[0x15] = b1[0x15] + b1[0x16]; + b2[0x16] = (b1[0x16] - b1[0x15]) * cos1; + + b2[0x18] = b1[0x18] + b1[0x1B]; + b2[0x1B] = (b1[0x18] - b1[0x1B]) * cos0; + b2[0x19] = b1[0x19] + b1[0x1A]; + b2[0x1A] = (b1[0x19] - b1[0x1A]) * cos1; + + b2[0x1C] = b1[0x1C] + b1[0x1F]; + b2[0x1F] = (b1[0x1F] - b1[0x1C]) * cos0; + b2[0x1D] = b1[0x1D] + b1[0x1E]; + b2[0x1E] = (b1[0x1E] - b1[0x1D]) * cos1; + } + + { + register real const cos0 = pnts[4][0]; + + b1[0x00] = b2[0x00] + b2[0x01]; + b1[0x01] = (b2[0x00] - b2[0x01]) * cos0; + b1[0x02] = b2[0x02] + b2[0x03]; + b1[0x03] = (b2[0x03] - b2[0x02]) * cos0; + b1[0x02] += b1[0x03]; + + b1[0x04] = b2[0x04] + b2[0x05]; + b1[0x05] = (b2[0x04] - b2[0x05]) * cos0; + b1[0x06] = b2[0x06] + b2[0x07]; + b1[0x07] = (b2[0x07] - b2[0x06]) * cos0; + b1[0x06] += b1[0x07]; + b1[0x04] += b1[0x06]; + b1[0x06] += b1[0x05]; + b1[0x05] += b1[0x07]; + + b1[0x08] = b2[0x08] + b2[0x09]; + b1[0x09] = (b2[0x08] - b2[0x09]) * cos0; + b1[0x0A] = b2[0x0A] + b2[0x0B]; + b1[0x0B] = (b2[0x0B] - b2[0x0A]) * cos0; + b1[0x0A] += b1[0x0B]; + + b1[0x0C] = b2[0x0C] + b2[0x0D]; + b1[0x0D] = (b2[0x0C] - b2[0x0D]) * cos0; + b1[0x0E] = b2[0x0E] + b2[0x0F]; + b1[0x0F] = (b2[0x0F] - b2[0x0E]) * cos0; + b1[0x0E] += b1[0x0F]; + b1[0x0C] += b1[0x0E]; + b1[0x0E] += b1[0x0D]; + b1[0x0D] += b1[0x0F]; + + b1[0x10] = b2[0x10] + b2[0x11]; + b1[0x11] = (b2[0x10] - b2[0x11]) * cos0; + b1[0x12] = b2[0x12] + b2[0x13]; + b1[0x13] = (b2[0x13] - b2[0x12]) * cos0; + b1[0x12] += b1[0x13]; + + b1[0x14] = b2[0x14] + b2[0x15]; + b1[0x15] = (b2[0x14] - b2[0x15]) * cos0; + b1[0x16] = b2[0x16] + b2[0x17]; + b1[0x17] = (b2[0x17] - b2[0x16]) * cos0; + b1[0x16] += b1[0x17]; + b1[0x14] += b1[0x16]; + b1[0x16] += b1[0x15]; + b1[0x15] += b1[0x17]; + + b1[0x18] = b2[0x18] + b2[0x19]; + b1[0x19] = (b2[0x18] - b2[0x19]) * cos0; + b1[0x1A] = b2[0x1A] + b2[0x1B]; + b1[0x1B] = (b2[0x1B] - b2[0x1A]) * cos0; + b1[0x1A] += b1[0x1B]; + + b1[0x1C] = b2[0x1C] + b2[0x1D]; + b1[0x1D] = (b2[0x1C] - b2[0x1D]) * cos0; + b1[0x1E] = b2[0x1E] + b2[0x1F]; + b1[0x1F] = (b2[0x1F] - b2[0x1E]) * cos0; + b1[0x1E] += b1[0x1F]; + b1[0x1C] += b1[0x1E]; + b1[0x1E] += b1[0x1D]; + b1[0x1D] += b1[0x1F]; + } + + out0[0x10 * 16] = b1[0x00]; + out0[0x10 * 12] = b1[0x04]; + out0[0x10 * 8] = b1[0x02]; + out0[0x10 * 4] = b1[0x06]; + out0[0x10 * 0] = b1[0x01]; + out1[0x10 * 0] = b1[0x01]; + out1[0x10 * 4] = b1[0x05]; + out1[0x10 * 8] = b1[0x03]; + out1[0x10 * 12] = b1[0x07]; + + b1[0x08] += b1[0x0C]; + out0[0x10 * 14] = b1[0x08]; + b1[0x0C] += b1[0x0a]; + out0[0x10 * 10] = b1[0x0C]; + b1[0x0A] += b1[0x0E]; + out0[0x10 * 6] = b1[0x0A]; + b1[0x0E] += b1[0x09]; + out0[0x10 * 2] = b1[0x0E]; + b1[0x09] += b1[0x0D]; + out1[0x10 * 2] = b1[0x09]; + b1[0x0D] += b1[0x0B]; + out1[0x10 * 6] = b1[0x0D]; + b1[0x0B] += b1[0x0F]; + out1[0x10 * 10] = b1[0x0B]; + out1[0x10 * 14] = b1[0x0F]; + + b1[0x18] += b1[0x1C]; + out0[0x10 * 15] = b1[0x10] + b1[0x18]; + out0[0x10 * 13] = b1[0x18] + b1[0x14]; + b1[0x1C] += b1[0x1a]; + out0[0x10 * 11] = b1[0x14] + b1[0x1C]; + out0[0x10 * 9] = b1[0x1C] + b1[0x12]; + b1[0x1A] += b1[0x1E]; + out0[0x10 * 7] = b1[0x12] + b1[0x1A]; + out0[0x10 * 5] = b1[0x1A] + b1[0x16]; + b1[0x1E] += b1[0x19]; + out0[0x10 * 3] = b1[0x16] + b1[0x1E]; + out0[0x10 * 1] = b1[0x1E] + b1[0x11]; + b1[0x19] += b1[0x1D]; + out1[0x10 * 1] = b1[0x11] + b1[0x19]; + out1[0x10 * 3] = b1[0x19] + b1[0x15]; + b1[0x1D] += b1[0x1B]; + out1[0x10 * 5] = b1[0x15] + b1[0x1D]; + out1[0x10 * 7] = b1[0x1D] + b1[0x13]; + b1[0x1B] += b1[0x1F]; + out1[0x10 * 9] = b1[0x13] + b1[0x1B]; + out1[0x10 * 11] = b1[0x1B] + b1[0x17]; + out1[0x10 * 13] = b1[0x17] + b1[0x1F]; + out1[0x10 * 15] = b1[0x1F]; +} + +/* + * the call via mpg123_dct64 is a trick to force GCC to use + * (new) registers for the b1,b2 pointer to the bufs[xx] field + */ +void mpg123_dct64(real * a, real * b, real * c) +{ + real bufs[0x40]; + + mpg123_dct64_1(a, b, bufs, bufs + 0x20, c); +} -- cgit v1.2.3