📄 resize.cpp
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/* ***** BEGIN LICENSE BLOCK *****
* Version: RCSL 1.0/RPSL 1.0
*
* Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
*
* The contents of this file, and the files included with this file, are
* subject to the current version of the RealNetworks Public Source License
* Version 1.0 (the "RPSL") available at
* http://www.helixcommunity.org/content/rpsl unless you have licensed
* the file under the RealNetworks Community Source License Version 1.0
* (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
* in which case the RCSL will apply. You may also obtain the license terms
* directly from RealNetworks. You may not use this file except in
* compliance with the RPSL or, if you have a valid RCSL with RealNetworks
* applicable to this file, the RCSL. Please see the applicable RPSL or
* RCSL for the rights, obligations and limitations governing use of the
* contents of the file.
*
* This file is part of the Helix DNA Technology. RealNetworks is the
* developer of the Original Code and owns the copyrights in the portions
* it created.
*
* This file, and the files included with this file, is distributed and made
* available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
*
* Technology Compatibility Kit Test Suite(s) Location:
* http://www.helixcommunity.org/content/tck
*
* Contributor(s):
*
* ***** END LICENSE BLOCK ***** */
////////////////////////////////////////////////////////
// include files
////////////////////////////////////////////////////////
#include "hlxclib/stdlib.h"
#include "hlxclib/string.h"
#include "mmx_util.h"
#include "resize.h"
////////////////////////////////////////////////////////
// internal prototypes
////////////////////////////////////////////////////////
static void
interpolate_ii (
unsigned char *dest, int dest_width, int dest_height, int dest_pitch,
unsigned char *src, int src_width, int src_height, int src_pitch);
static void
decimate (
unsigned char *dest, int dest_width, int dest_height, int dest_pitch,
unsigned char *src, int src_width, int src_height, int src_pitch,
RESIZE_BUFF_TYPE *buff);
#ifdef _M_IX86
static void
decimate_half_horiz_MMX (
unsigned char *dest, int dest_width, int dest_height,
unsigned char *src, int src_width, int src_height);
#endif
static void
decimate_half_horiz_accurate(
unsigned char *dest, int dest_width, int dest_height, int dest_pitch,
unsigned char *src, int src_width, int src_height, int src_pitch);
////////////////////////////////////////////////////////
// Select interpolation or decimation
////////////////////////////////////////////////////////
void resize_plane(
unsigned char *dest, int dest_width, int dest_height, int dest_pitch,
unsigned char *src, int src_width, int src_height, int src_pitch,
RESIZE_BUFF_TYPE *buff, int accuracy)
{
if ((dest_width > src_width) || (dest_height > src_height) ||
(accuracy == 0) || (buff == NULL))
{
// interpolation
interpolate_ii (dest,dest_width, dest_height, dest_pitch,
src, src_width, src_height, src_pitch);
}
else
{
// decimation -- check for special case functions
#ifdef _M_IX86
if (((dest_width) == (src_width >> 1)) &&
((dest_height) == (src_height)) &&
((dest_pitch) == (dest_width)) &&
((src_pitch) == (src_width)) &&
(checkMmxAvailablity()&CPU_HAS_MMX) && (accuracy == 0))
{
decimate_half_horiz_MMX (
dest,dest_width, dest_height,
src, src_width, src_height);
}
else
#endif
if (((dest_width) == (src_width >> 1)) &&
((dest_height) == (src_height)))
{
decimate_half_horiz_accurate(
dest,dest_width, dest_height, dest_pitch,
src, src_width, src_height, src_pitch);
}
else
{
decimate (dest,dest_width, dest_height, dest_pitch,
src, src_width, src_height, src_pitch, buff);
}
}
}
#if 1 // simpler filter
#define FULL_PEL_INC 256
#define INT_FILT_SIZE 1025
#define INT_FILT_CENTER 512
static const int int_filt_tab[INT_FILT_SIZE] =
{
0,
-3, -5, -8, -11, -13, -16, -19, -21, -24, -27, -29, -32, -35, -37, -40, -43, -45, -48, -50, -53,
-56, -58, -61, -63, -66, -69, -71, -74, -76, -79, -81, -84, -87, -89, -92, -94, -97, -99, -102, -104,
-107, -109, -111, -114, -116, -119, -121, -124, -126, -128, -131, -133, -135, -138, -140, -142, -144, -147, -149, -151,
-153, -156, -158, -160, -162, -164, -166, -169, -171, -173, -175, -177, -179, -181, -183, -185, -187, -189, -191, -193,
-194, -196, -198, -200, -202, -203, -205, -207, -209, -210, -212, -214, -215, -217, -218, -220, -222, -223, -225, -226,
-227, -229, -230, -232, -233, -234, -235, -237, -238, -239, -240, -242, -243, -244, -245, -246, -247, -248, -249, -250,
-251, -251, -252, -253, -254, -255, -255, -256, -257, -257, -258, -258, -259, -259, -260, -260, -261, -261, -261, -262,
-262, -262, -262, -263, -263, -263, -263, -263, -263, -263, -263, -262, -262, -262, -262, -262, -261, -261, -260, -260,
-260, -259, -258, -258, -257, -257, -256, -255, -254, -253, -253, -252, -251, -250, -249, -248, -246, -245, -244, -243,
-241, -240, -239, -237, -236, -234, -233, -231, -229, -228, -226, -224, -222, -220, -218, -216, -214, -212, -210, -208,
-206, -203, -201, -199, -196, -194, -191, -189, -186, -183, -180, -178, -175, -172, -169, -166, -163, -160, -157, -153,
-150, -147, -143, -140, -137, -133, -129, -126, -122, -118, -114, -111, -107, -103, -99, -94, -90, -86, -82, -78,
-73, -69, -64, -60, -55, -50, -45, -41, -36, -31, -26, -21, -16, -11, -5, 0, 16, 32, 48, 64,
81, 97, 113, 130, 146, 163, 180, 196, 213, 230, 247, 264, 280, 297, 314, 332, 349, 366, 383, 400,
418, 435, 452, 470, 487, 505, 522, 540, 558, 575, 593, 611, 629, 646, 664, 682, 700, 718, 736, 754,
772, 790, 808, 827, 845, 863, 881, 899, 918, 936, 954, 973, 991, 1009, 1028, 1046, 1065, 1083, 1102, 1120,
1139, 1157, 1176, 1194, 1213, 1231, 1250, 1268, 1287, 1306, 1324, 1343, 1362, 1380, 1399, 1418, 1436, 1455, 1473, 1492,
1511, 1529, 1548, 1567, 1585, 1604, 1623, 1641, 1660, 1679, 1697, 1716, 1735, 1753, 1772, 1790, 1809, 1828, 1846, 1865,
1883, 1902, 1920, 1939, 1957, 1976, 1994, 2013, 2031, 2049, 2068, 2086, 2104, 2123, 2141, 2159, 2177, 2195, 2214, 2232,
2250, 2268, 2286, 2304, 2322, 2340, 2358, 2376, 2394, 2411, 2429, 2447, 2465, 2482, 2500, 2518, 2535, 2553, 2570, 2588,
2605, 2622, 2640, 2657, 2674, 2691, 2708, 2725, 2742, 2759, 2776, 2793, 2810, 2827, 2843, 2860, 2877, 2893, 2910, 2926,
2942, 2959, 2975, 2991, 3007, 3023, 3039, 3055, 3071, 3087, 3103, 3119, 3134, 3150, 3165, 3181, 3196, 3211, 3226, 3242,
3257, 3272, 3287, 3301, 3316, 3331, 3345, 3360, 3374, 3389, 3403, 3417, 3432, 3446, 3460, 3473, 3487, 3501, 3515, 3528,
3542, 3555, 3568, 3582, 3595, 3608, 3621, 3633, 3646, 3659, 3671, 3684, 3696, 3708, 3721, 3733, 3745, 3757, 3768, 3780,
3792, 3803, 3814, 3826, 3837, 3848, 3859, 3870, 3880, 3891, 3902, 3912, 3922, 3932, 3943, 3953, 3962, 3972, 3982, 3991,
4001, 4010, 4019, 4028, 4037, 4046, 4054, 4063, 4071, 4080, 4088, 4096, 4088, 4080, 4071, 4063, 4054, 4046, 4037, 4028,
4019, 4010, 4001, 3991, 3982, 3972, 3962, 3953, 3943, 3932, 3922, 3912, 3902, 3891, 3880, 3870, 3859, 3848, 3837, 3826,
3814, 3803, 3792, 3780, 3768, 3757, 3745, 3733, 3721, 3708, 3696, 3684, 3671, 3659, 3646, 3633, 3621, 3608, 3595, 3582,
3568, 3555, 3542, 3528, 3515, 3501, 3487, 3473, 3460, 3446, 3432, 3417, 3403, 3389, 3374, 3360, 3345, 3331, 3316, 3301,
3287, 3272, 3257, 3242, 3226, 3211, 3196, 3181, 3165, 3150, 3134, 3119, 3103, 3087, 3071, 3055, 3039, 3023, 3007, 2991,
2975, 2959, 2942, 2926, 2910, 2893, 2877, 2860, 2843, 2827, 2810, 2793, 2776, 2759, 2742, 2725, 2708, 2691, 2674, 2657,
2640, 2622, 2605, 2588, 2570, 2553, 2535, 2518, 2500, 2482, 2465, 2447, 2429, 2411, 2394, 2376, 2358, 2340, 2322, 2304,
2286, 2268, 2250, 2232, 2214, 2195, 2177, 2159, 2141, 2123, 2104, 2086, 2068, 2049, 2031, 2013, 1994, 1976, 1957, 1939,
1920, 1902, 1883, 1865, 1846, 1828, 1809, 1790, 1772, 1753, 1735, 1716, 1697, 1679, 1660, 1641, 1623, 1604, 1585, 1567,
1548, 1529, 1511, 1492, 1473, 1455, 1436, 1418, 1399, 1380, 1362, 1343, 1324, 1306, 1287, 1268, 1250, 1231, 1213, 1194,
1176, 1157, 1139, 1120, 1102, 1083, 1065, 1046, 1028, 1009, 991, 973, 954, 936, 918, 899, 881, 863, 845, 827,
808, 790, 772, 754, 736, 718, 700, 682, 664, 646, 629, 611, 593, 575, 558, 540, 522, 505, 487, 470,
452, 435, 418, 400, 383, 366, 349, 332, 314, 297, 280, 264, 247, 230, 213, 196, 180, 163, 146, 130,
113, 97, 81, 64, 48, 32, 16, 0, -5, -11, -16, -21, -26, -31, -36, -41, -45, -50, -55, -60,
-64, -69, -73, -78, -82, -86, -90, -94, -99, -103, -107, -111, -114, -118, -122, -126, -129, -133, -137, -140,
-143, -147, -150, -153, -157, -160, -163, -166, -169, -172, -175, -178, -180, -183, -186, -189, -191, -194, -196, -199,
-201, -203, -206, -208, -210, -212, -214, -216, -218, -220, -222, -224, -226, -228, -229, -231, -233, -234, -236, -237,
-239, -240, -241, -243, -244, -245, -246, -248, -249, -250, -251, -252, -253, -253, -254, -255, -256, -257, -257, -258,
-258, -259, -260, -260, -260, -261, -261, -262, -262, -262, -262, -262, -263, -263, -263, -263, -263, -263, -263, -263,
-262, -262, -262, -262, -261, -261, -261, -260, -260, -259, -259, -258, -258, -257, -257, -256, -255, -255, -254, -253,
-252, -251, -251, -250, -249, -248, -247, -246, -245, -244, -243, -242, -240, -239, -238, -237, -235, -234, -233, -232,
-230, -229, -227, -226, -225, -223, -222, -220, -218, -217, -215, -214, -212, -210, -209, -207, -205, -203, -202, -200,
-198, -196, -194, -193, -191, -189, -187, -185, -183, -181, -179, -177, -175, -173, -171, -169, -166, -164, -162, -160,
-158, -156, -153, -151, -149, -147, -144, -142, -140, -138, -135, -133, -131, -128, -126, -124, -121, -119, -116, -114,
-111, -109, -107, -104, -102, -99, -97, -94, -92, -89, -87, -84, -81, -79, -76, -74, -71, -69, -66, -63,
-61, -58, -56, -53, -50, -48, -45, -43, -40, -37, -35, -32, -29, -27, -24, -21, -19, -16, -13, -11,
-8, -5, -3, 0
};
#else // complex filter
#define FULL_PEL_INC 128
#define INT_FILT_SIZE 1025
#define INT_FILT_CENTER 512
static const int int_filt_tab[INT_FILT_SIZE] =
{
0,
0, 0, -1, -1, -1, -1, -2, -2, -2, -2, -2, -3, -3, -3, -3, -4, -4, -4, -4, -4,
-5, -5, -5, -5, -5, -6, -6, -6, -6, -6, -7, -7, -7, -7, -7, -7, -8, -8, -8, -8,
-8, -8, -8, -8, -9, -9, -9, -9, -9, -9, -9, -9, -9, -10, -10, -10, -10, -10, -10, -10,
-10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10,
-10, -9, -9, -9, -9, -9, -9, -9, -9, -9, -8, -8, -8, -8, -8, -8, -8, -7, -7, -7,
-7, -7, -6, -6, -6, -6, -6, -5, -5, -5, -5, -4, -4, -4, -4, -3, -3, -3, -3, -2,
-2, -2, -1, -1, -1, -1, 0, 0, 2, 4, 6, 9, 11, 13, 15, 17, 19, 21, 23, 25,
28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 51, 53, 55, 57, 59, 61, 62, 64,
66, 67, 69, 70, 72, 74, 75, 76, 78, 79, 81, 82, 83, 84, 85, 87, 88, 89, 90, 91,
91, 92, 93, 94, 95, 95, 96, 96, 97, 97, 98, 98, 98, 99, 99, 99, 99, 99, 99, 99,
99, 98, 98, 98, 97, 97, 96, 96, 95, 94, 94, 93, 92, 91, 90, 89, 88, 87, 85, 84,
83, 81, 80, 78, 77, 75, 73, 71, 70, 68, 66, 64, 62, 60, 57, 55, 53, 51, 48, 46,
43, 41, 38, 35, 33, 30, 27, 24, 21, 18, 16, 12, 9, 6, 3, 0, -10, -19, -29, -39,
-48, -58, -68, -78, -87, -97, -107, -117, -126, -136, -146, -155, -165, -175, -184, -194, -203, -212, -222, -231,
-240, -249, -258, -267, -276, -285, -293, -302, -310, -318, -326, -335, -342, -350, -358, -365, -373, -380, -387, -394,
-400, -407, -413, -420, -425, -431, -437, -442, -447, -452, -457, -462, -466, -470, -474, -478, -481, -484, -487, -490,
-492, -495, -496, -498, -500, -501, -501, -502, -502, -502, -502, -501, -500, -499, -498, -496, -494, -491, -488, -485,
-482, -478, -474, -470, -465, -460, -455, -449, -443, -436, -429, -422, -415, -407, -399, -390, -381, -372, -362, -352,
-342, -331, -320, -309, -297, -285, -272, -259, -246, -232, -218, -203, -188, -173, -158, -142, -125, -108, -91, -74,
-56, -38, -19, 0, 32, 65, 98, 131, 165, 198, 233, 267, 302, 338, 373, 409, 445, 481, 518, 555,
592, 629, 667, 705, 743, 781, 820, 858, 897, 936, 975, 1015, 1054, 1094, 1133, 1173, 1213, 1253, 1293, 1333,
1374, 1414, 1454, 1495, 1535, 1575, 1616, 1656, 1697, 1737, 1778, 1818, 1858, 1898, 1939, 1979, 2019, 2059, 2098, 2138,
2178, 2217, 2256, 2295, 2334, 2373, 2412, 2450, 2488, 2526, 2564, 2601, 2639, 2676, 2712, 2749, 2785, 2821, 2857, 2892,
2927, 2961, 2996, 3030, 3063, 3097, 3129, 3162, 3194, 3226, 3257, 3288, 3318, 3348, 3378, 3407, 3436, 3464, 3492, 3519,
3546, 3572, 3598, 3623, 3648, 3672, 3696, 3719, 3742, 3764, 3785, 3806, 3826, 3846, 3865, 3884, 3902, 3919, 3936, 3952,
3968, 3983, 3997, 4011, 4024, 4036, 4048, 4059, 4069, 4079, 4088, 4096, 4088, 4079, 4069, 4059, 4048, 4036, 4024, 4011,
3997, 3983, 3968, 3952, 3936, 3919, 3902, 3884, 3865, 3846, 3826, 3806, 3785, 3764, 3742, 3719, 3696, 3672, 3648, 3623,
3598, 3572, 3546, 3519, 3492, 3464, 3436, 3407, 3378, 3348, 3318, 3288, 3257, 3226, 3194, 3162, 3129, 3097, 3063, 3030,
2996, 2961, 2927, 2892, 2857, 2821, 2785, 2749, 2712, 2676, 2639, 2601, 2564, 2526, 2488, 2450, 2412, 2373, 2334, 2295,
2256, 2217, 2178, 2138, 2098, 2059, 2019, 1979, 1939, 1898, 1858, 1818, 1778, 1737, 1697, 1656, 1616, 1575, 1535, 1495,
1454, 1414, 1374, 1333, 1293, 1253, 1213, 1173, 1133, 1094, 1054, 1015, 975, 936, 897, 858, 820, 781, 743, 705,
667, 629, 592, 555, 518, 481, 445, 409, 373, 338, 302, 267, 233, 198, 165, 131, 98, 65, 32, 0,
-19, -38, -56, -74, -91, -108, -125, -142, -158, -173, -188, -203, -218, -232, -246, -259, -272, -285, -297, -309,
-320, -331, -342, -352, -362, -372, -381, -390, -399, -407, -415, -422, -429, -436, -443, -449, -455, -460, -465, -470,
-474, -478, -482, -485, -488, -491, -494, -496, -498, -499, -500, -501, -502, -502, -502, -502, -501, -501, -500, -498,
-496, -495, -492, -490, -487, -484, -481, -478, -474, -470, -466, -462, -457, -452, -447, -442, -437, -431, -425, -420,
-413, -407, -400, -394, -387, -380, -373, -365, -358, -350, -342, -335, -326, -318, -310, -302, -293, -285, -276, -267,
-258, -249, -240, -231, -222, -212, -203, -194, -184, -175, -165, -155, -146, -136, -126, -117, -107, -97, -87, -78,
-68, -58, -48, -39, -29, -19, -10, 0, 3, 6, 9, 12, 16, 18, 21, 24, 27, 30, 33, 35,
38, 41, 43, 46, 48, 51, 53, 55, 57, 60, 62, 64, 66, 68, 70, 71, 73, 75, 77, 78,
80, 81, 83, 84, 85, 87, 88, 89, 90, 91, 92, 93, 94, 94, 95, 96, 96, 97, 97, 98,
98, 98, 99, 99, 99, 99, 99, 99, 99, 99, 98, 98, 98, 97, 97, 96, 96, 95, 95, 94,
93, 92, 91, 91, 90, 89, 88, 87, 85, 84, 83, 82, 81, 79, 78, 76, 75, 74, 72, 70,
69, 67, 66, 64, 62, 61, 59, 57, 55, 53, 51, 50, 48, 46, 44, 42, 40, 38, 36, 34,
32, 30, 28, 25, 23, 21, 19, 17, 15, 13, 11, 9, 6, 4, 2, 0, 0, -1, -1, -1,
-1, -2, -2, -2, -3, -3, -3, -3, -4, -4, -4, -4, -5, -5, -5, -5, -6, -6, -6, -6,
-6, -7, -7, -7, -7, -7, -8, -8, -8, -8, -8, -8, -8, -9, -9, -9, -9, -9, -9, -9,
-9, -9, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -10,
-10, -10, -10, -10, -10, -10, -10, -10, -10, -10, -9, -9, -9, -9, -9, -9, -9, -9, -9, -8,
-8, -8, -8, -8, -8, -8, -8, -7, -7, -7, -7, -7, -7, -6, -6, -6, -6, -6, -5, -5,
-5, -5, -5, -4, -4, -4, -4, -4, -3, -3, -3, -3, -2, -2, -2, -2, -2, -1, -1, -1,
-1, 0, 0, 0
};
#endif
// Clipping table
#define CLAMP_BIAS 128 // Bias in clamping table
#define CLIP_RANGE (CLAMP_BIAS + 256 + CLAMP_BIAS)
const unsigned char ClampTbl[CLIP_RANGE] = { /* Flawfinder: ignore */
0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x00
,0x00 ,0x01 ,0x02 ,0x03 ,0x04 ,0x05 ,0x06 ,0x07
,0x08 ,0x09 ,0x0a ,0x0b ,0x0c ,0x0d ,0x0e ,0x0f
,0x10 ,0x11 ,0x12 ,0x13 ,0x14 ,0x15 ,0x16 ,0x17
,0x18 ,0x19 ,0x1a ,0x1b ,0x1c ,0x1d ,0x1e ,0x1f
,0x20 ,0x21 ,0x22 ,0x23 ,0x24 ,0x25 ,0x26 ,0x27
,0x28 ,0x29 ,0x2a ,0x2b ,0x2c ,0x2d ,0x2e ,0x2f
,0x30 ,0x31 ,0x32 ,0x33 ,0x34 ,0x35 ,0x36 ,0x37
,0x38 ,0x39 ,0x3a ,0x3b ,0x3c ,0x3d ,0x3e ,0x3f
,0x40 ,0x41 ,0x42 ,0x43 ,0x44 ,0x45 ,0x46 ,0x47
,0x48 ,0x49 ,0x4a ,0x4b ,0x4c ,0x4d ,0x4e ,0x4f
,0x50 ,0x51 ,0x52 ,0x53 ,0x54 ,0x55 ,0x56 ,0x57
,0x58 ,0x59 ,0x5a ,0x5b ,0x5c ,0x5d ,0x5e ,0x5f
,0x60 ,0x61 ,0x62 ,0x63 ,0x64 ,0x65 ,0x66 ,0x67
,0x68 ,0x69 ,0x6a ,0x6b ,0x6c ,0x6d ,0x6e ,0x6f
,0x70 ,0x71 ,0x72 ,0x73 ,0x74 ,0x75 ,0x76 ,0x77
,0x78 ,0x79 ,0x7a ,0x7b ,0x7c ,0x7d ,0x7e ,0x7f
,0x80 ,0x81 ,0x82 ,0x83 ,0x84 ,0x85 ,0x86 ,0x87
,0x88 ,0x89 ,0x8a ,0x8b ,0x8c ,0x8d ,0x8e ,0x8f
,0x90 ,0x91 ,0x92 ,0x93 ,0x94 ,0x95 ,0x96 ,0x97
,0x98 ,0x99 ,0x9a ,0x9b ,0x9c ,0x9d ,0x9e ,0x9f
,0xa0 ,0xa1 ,0xa2 ,0xa3 ,0xa4 ,0xa5 ,0xa6 ,0xa7
,0xa8 ,0xa9 ,0xaa ,0xab ,0xac ,0xad ,0xae ,0xaf
,0xb0 ,0xb1 ,0xb2 ,0xb3 ,0xb4 ,0xb5 ,0xb6 ,0xb7
,0xb8 ,0xb9 ,0xba ,0xbb ,0xbc ,0xbd ,0xbe ,0xbf
,0xc0 ,0xc1 ,0xc2 ,0xc3 ,0xc4 ,0xc5 ,0xc6 ,0xc7
,0xc8 ,0xc9 ,0xca ,0xcb ,0xcc ,0xcd ,0xce ,0xcf
,0xd0 ,0xd1 ,0xd2 ,0xd3 ,0xd4 ,0xd5 ,0xd6 ,0xd7
,0xd8 ,0xd9 ,0xda ,0xdb ,0xdc ,0xdd ,0xde ,0xdf
,0xe0 ,0xe1 ,0xe2 ,0xe3 ,0xe4 ,0xe5 ,0xe6 ,0xe7
,0xe8 ,0xe9 ,0xea ,0xeb ,0xec ,0xed ,0xee ,0xef
,0xf0 ,0xf1 ,0xf2 ,0xf3 ,0xf4 ,0xf5 ,0xf6 ,0xf7
,0xf8 ,0xf9 ,0xfa ,0xfb ,0xfc ,0xfd ,0xfe ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff ,0xff
};
#ifdef CLIP_PEL
#undef CLIP_PEL
#endif
#define CLIP_PEL(p) (ClampTbl[ (p) + CLAMP_BIAS ])
#define POS_SCALE_BITS 16
#define FILT_COEFF_BITS 12
#define FILT_SCALE_BITS 8
#define USE_SOURCE_LEVEL 1
////////////////////////////////////////////////////////
//
// Performs fast half horizontal w/ MMX
// Greg Conklin - 9/21/99
//
////////////////////////////////////////////////////////
#ifdef _M_IX86
static void
decimate_half_horiz_MMX (
unsigned char *dest, int dest_width, int dest_height,
unsigned char *src, int src_width, int src_height)
{
unsigned char word_mask[8] = {0xFF,0x00,0xFF,0x00,0xFF,0x00,0xFF,0x00}; /* Flawfinder: ignore */
int num_itrs;
// must be doing half horizontal resolution
if (((dest_width) != (src_width >> 1)) ||
((dest_height) != (src_height)))
return;
num_itrs = ((dest_height*dest_width) >> 3);
__asm {
mov ecx, num_itrs
mov esi, src // esi -> source frame
mov edi, dest // edi -> destination frame
movq mm7, [word_mask] // mm7 holds the bytes->words mask
ALIGN 16
pel_loop:
movq mm0, [esi]
movq mm1, mm0
psrlw mm1, 8
pand mm0, mm7
paddw mm0, mm1
psrlw mm0, 1
lea esi, [esi+8]
movq mm1, [esi]
movq mm2, mm1
psrlw mm2, 8
pand mm1, mm7
paddw mm1, mm2
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