/* $Id: dequant.c,v 1.2 2001-09-05 14:30:44 bird Exp $ */ /* ** THIS SOFTWARE IS SUBJECT TO COPYRIGHT PROTECTION AND IS OFFERED ONLY ** PURSUANT TO THE 3DFX GLIDE GENERAL PUBLIC LICENSE. THERE IS NO RIGHT ** TO USE THE GLIDE TRADEMARK WITHOUT PRIOR WRITTEN PERMISSION OF 3DFX ** INTERACTIVE, INC. A COPY OF THIS LICENSE MAY BE OBTAINED FROM THE ** DISTRIBUTOR OR BY CONTACTING 3DFX INTERACTIVE INC(info@3dfx.com). ** THIS PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER ** EXPRESSED OR IMPLIED. SEE THE 3DFX GLIDE GENERAL PUBLIC LICENSE FOR A ** FULL TEXT OF THE NON-WARRANTY PROVISIONS. ** ** USE, DUPLICATION OR DISCLOSURE BY THE GOVERNMENT IS SUBJECT TO ** RESTRICTIONS AS SET FORTH IN SUBDIVISION (C)(1)(II) OF THE RIGHTS IN ** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 252.227-7013, ** AND/OR IN SIMILAR OR SUCCESSOR CLAUSES IN THE FAR, DOD OR NASA FAR ** SUPPLEMENT. UNPUBLISHED RIGHTS RESERVED UNDER THE COPYRIGHT LAWS OF ** THE UNITED STATES. ** ** COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED ** ** $Revision: 1.2 $ ** $Date: 2001-09-05 14:30:44 $ */ #include #include #include #include #include "texusint.h" /* * Pn_8 = convert n bits (n <= 6) to 8 bits by replicating the msb's of input * into the lsb's of the output. */ static FxU8 P1_8[] = {0x00,0xff}; static FxU8 P2_8[] = {0x00,0x55,0xaa,0xff}; static FxU8 P3_8[] = {0x00,0x24,0x49,0x6d,0x92,0xb6,0xdb,0xff}; static FxU8 P4_8[] = {0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77, 0x88,0x99,0xaa,0xbb,0xcc,0xdd,0xee,0xff}; static FxU8 P5_8[] = {0x00,0x08,0x10,0x18,0x21,0x29,0x31,0x39, 0x42,0x4a,0x52,0x5a,0x63,0x6b,0x73,0x7b, 0x84,0x8c,0x94,0x9c,0xa5,0xad,0xb5,0xbd, 0xc6,0xce,0xd6,0xde,0xe7,0xef,0xf7,0xff}; static FxU8 P6_8[] = {0x00,0x04,0x08,0x0c,0x10,0x14,0x18,0x1c, 0x20,0x24,0x28,0x2c,0x30,0x34,0x38,0x3c, 0x41,0x45,0x49,0x4d,0x51,0x55,0x59,0x5d, 0x61,0x65,0x69,0x6d,0x71,0x75,0x79,0x7d, 0x82,0x86,0x8a,0x8e,0x92,0x96,0x9a,0x9e, 0xa2,0xa6,0xaa,0xae,0xb2,0xb6,0xba,0xbe, 0xc3,0xc7,0xcb,0xcf,0xd3,0xd7,0xdb,0xdf, 0xe3,0xe7,0xeb,0xef,0xf3,0xf7,0xfb,0xff}; static FxU32 _txPixRgb332to8888 (FxU8 c332) { FxU32 a, r, g, b; a = 0xff; r = P3_8[(c332>>5)&7]; g = P3_8[(c332>>2)&7]; b = P2_8[(c332 )&3]; return (a << 24) | (r << 16) | (g << 8) | b; } /* YIQ treated at the image level */ static FxU32 _txPixA8to8888 (FxU8 a8) { FxU32 p = a8; return (p << 24) | (0xffffff); } static FxU32 _txPixI8to8888 (FxU8 i8) { FxU32 p = i8; return (0xff << 24) | (p << 16) | (p << 8) | p; } static FxU32 _txPixAi44to8888 (FxU8 c44) { FxU32 a, i; a = P4_8[(c44 & 0xF0) >> 4]; i = P4_8[(c44 & 0x0F) ]; return (a << 24) | (i << 16) | (i << 8) | i; } /* P8 treated at the image level */ /* 16 bit pixels */ static FxU32 _txPixArgb8332to8888(FxU16 c8332) { FxU32 a, r, g, b; a = (c8332 >> 8); r = P3_8[(c8332 >> 5) & 0x7]; g = P3_8[(c8332 >> 2) & 0x7]; b = P2_8[(c8332 ) & 0x3]; return (a << 24) | (r << 16) | (g << 8) | b; } /* AYIQ8422 treated at image level */ static FxU32 _txPixRgb565to8888 (FxU16 c565) { FxU32 a, r, g, b; a = 0xFF; r = P5_8[(c565 >> 11) ]; g = P6_8[(c565 >> 5) & 0x3f]; b = P5_8[(c565 ) & 0x1f]; return (a << 24) | (r << 16) | (g << 8) | b; } static FxU32 _txPixArgb1555to8888 (FxU16 c1555) { FxU32 a, r, g, b; a = P1_8[(c1555 >> 15) ]; r = P5_8[(c1555 >> 10) & 0x1f]; g = P5_8[(c1555 >> 5) & 0x1f]; b = P5_8[(c1555 ) & 0x1f]; return (a << 24) | (r << 16) | (g << 8) | b; } static FxU32 _txPixRgba4444to8888 (FxU16 c4444) { FxU32 a, r, g, b; a = P4_8[(c4444 >> 12) & 0xf]; r = P4_8[(c4444 >> 8) & 0xf]; g = P4_8[(c4444 >> 4) & 0xf]; b = P4_8[(c4444 ) & 0xf]; return (a << 24) | (r << 16) | (g << 8) | b; } static FxU32 _txPixAi88to8888(FxU16 c88) { FxU32 a, r, g, b; a = c88 >> 8; r = g = b = (c88 & 0xff); return (a << 24) | (r << 16) | (g << 8) | b; } /******************************************************************************/ static void _txImgDequantizeRGB332(FxU32 *out, FxU8 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = _txPixRgb332to8888(*--in); } static void _txImgDequantizeYIQ422(FxU32 *out, FxU8 *in, int w, int h, const long *yabTable) { int n = w * h; FxU32 pal[256]; txYABtoPal256((long *)pal, (long *)yabTable); out += n; in += n; while (n--) *--out = pal[*--in] | 0xff000000; } static void _txImgDequantizeA8(FxU32 *out, FxU8 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = _txPixA8to8888(*--in); } static void _txImgDequantizeI8(FxU32 *out, FxU8 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = _txPixI8to8888(*--in); } static void _txImgDequantizeAI44(FxU32 *out, FxU8 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = _txPixAi44to8888(*--in); } static void _txImgDequantizeP8(FxU32 *out, FxU8 *in, int w, int h, const FxU32 *pal) { int n = w * h; out += n; in += n; while (n--) *--out = pal[*--in] | 0xff000000; } static void _txImgDequantizeARGB8332(FxU32 *out, FxU16 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = _txPixArgb8332to8888 (*--in); } static void _txImgDequantizeAYIQ8422(FxU32 *out, FxU16 *in, int w, int h, const long *yab) { int n = w * h; long pal[256]; txYABtoPal256(pal, yab); out += n; in += n; while (n--) { in--; *--out = (pal[(*in) & 0xff] & 0x00ffffff) | ((*in & 0xFF00) << 16); } } static void _txImgDequantizeRGB565(FxU32 *out, FxU16 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = _txPixRgb565to8888(*--in); } static void _txImgDequantizeARGB1555(FxU32 *out, FxU16 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = _txPixArgb1555to8888 (*--in); } static void _txImgDequantizeARGB4444(FxU32 *out, FxU16 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = _txPixRgba4444to8888 (*--in); } static void _txImgDequantizeAI88(FxU32 *out, FxU16 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = _txPixAi88to8888(*--in); } static void _txImgDequantizeAP88(FxU32 *out, FxU16 *in, int w, int h, const FxU32 *pal) { int n = w * h; out += n; in += n; while (n--) { in--; *--out = (pal[(*in) & 0xff] & 0x00ffffff) | ((*in & 0xFF00) << 16); } } static void _txImgDequantizeARGB8888(FxU32 *out, FxU32 *in, int w, int h) { int n = w * h; out += n; in += n; while (n--) *--out = *--in; } static void _txImgDequantizeRGB888(FxU32 *out, FxU32 *in_, int w, int h) { int n = w * h; int i; FxU8 *in = ( FxU8 * )in_; for( i = 0; i < n; i++ ) { out[i] = ( ( ( FxU32 )0xff ) << 24 ) | ( ( ( FxU32 )in[i*3] )<< 16 ) | ( ( ( FxU32 )in[i*3+1] )<< 8 ) | ( ( ( FxU32 )in[i*3+2] ) ); } } void txMipDequantize(TxMip *txMip, TxMip *pxMip) { /* Walk through all mipmap levels, and convert to ARGB8888 format */ int i, w, h; if( txVerbose ) { printf("Dequant: (from %s) ..", Format_Name[pxMip->format]); } w = pxMip->width; h = pxMip->height; for (i=0; i< txMip->depth; i++) { void *src, *dst; src = pxMip->data[i]; dst = txMip->data[i]; if( txVerbose ) { printf(" %dx%d", w, h); fflush(stdout); } switch(pxMip->format) { case GR_TEXFMT_RGB_332: _txImgDequantizeRGB332(dst, src, w, h); break; case GR_TEXFMT_YIQ_422: _txImgDequantizeYIQ422(dst, src, w, h, (long *)pxMip->pal); break; case GR_TEXFMT_A_8: _txImgDequantizeA8(dst, src, w, h); break; case GR_TEXFMT_I_8: _txImgDequantizeI8(dst, src, w, h); break; case GR_TEXFMT_AI_44: _txImgDequantizeAI44(dst, src, w, h); break; case GR_TEXFMT_P_8: _txImgDequantizeP8(dst, src, w, h, pxMip->pal); break; case GR_TEXFMT_ARGB_8332: _txImgDequantizeARGB8332(dst, src, w, h); break; case GR_TEXFMT_AYIQ_8422: _txImgDequantizeAYIQ8422(dst, src, w, h, (long *)pxMip->pal); break; case GR_TEXFMT_RGB_565: _txImgDequantizeRGB565(dst, src, w, h); break; case GR_TEXFMT_ARGB_1555: _txImgDequantizeARGB1555(dst, src, w, h); break; case GR_TEXFMT_ARGB_4444: _txImgDequantizeARGB4444(dst, src, w, h); break; case GR_TEXFMT_AI_88: _txImgDequantizeAI88(dst, src, w, h); break; case GR_TEXFMT_AP_88: _txImgDequantizeAP88(dst, src, w, h, pxMip->pal); break; case GR_TEXFMT_ARGB_8888: _txImgDequantizeARGB8888(dst, src, w, h); break; case GR_TEXFMT_RGB_888: _txImgDequantizeRGB888(dst, src, w, h); break; default: break; } if (w > 1) w >>= 1; if (h > 1) h >>= 1; } if( txVerbose ) { printf(".\n"); fflush(stdout); } }