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[libav.git] / libavcodec / ps2 / dsputil_mmi.c
1 /*
2 * MMI optimized DSP utils
3 * Copyright (c) 2000, 2001 Fabrice Bellard.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 * MMI optimization by Leon van Stuivenberg
20 * clear_blocks_mmi() by BroadQ
21 */
22
23 #include "../dsputil.h"
24 #include "mmi.h"
25
26 void ff_mmi_idct_put(uint8_t *dest, int line_size, DCTELEM *block);
27 void ff_mmi_idct_add(uint8_t *dest, int line_size, DCTELEM *block);
28 void ff_mmi_idct(DCTELEM *block);
29
30 static void clear_blocks_mmi(DCTELEM * blocks)
31 {
32 asm volatile(
33 ".set noreorder \n"
34 "addiu $9, %0, 768 \n"
35 "nop \n"
36 "1: \n"
37 "sq $0, 0(%0) \n"
38 "move $8, %0 \n"
39 "addi %0, %0, 64 \n"
40 "sq $0, 16($8) \n"
41 "slt $10, %0, $9 \n"
42 "sq $0, 32($8) \n"
43 "bnez $10, 1b \n"
44 "sq $0, 48($8) \n"
45 ".set reorder \n"
46 : "+r" (blocks) :: "$8", "$9", "memory" );
47 }
48
49
50 static void get_pixels_mmi(DCTELEM *block, const uint8_t *pixels, int line_size)
51 {
52 asm volatile(
53 ".set push \n\t"
54 ".set mips3 \n\t"
55 "ld $8, 0(%0) \n\t"
56 "add %0, %0, %2 \n\t"
57 "ld $9, 0(%0) \n\t"
58 "add %0, %0, %2 \n\t"
59 "ld $10, 0(%0) \n\t"
60 "pextlb $8, $0, $8 \n\t"
61 "sq $8, 0(%1) \n\t"
62 "add %0, %0, %2 \n\t"
63 "ld $8, 0(%0) \n\t"
64 "pextlb $9, $0, $9 \n\t"
65 "sq $9, 16(%1) \n\t"
66 "add %0, %0, %2 \n\t"
67 "ld $9, 0(%0) \n\t"
68 "pextlb $10, $0, $10 \n\t"
69 "sq $10, 32(%1) \n\t"
70 "add %0, %0, %2 \n\t"
71 "ld $10, 0(%0) \n\t"
72 "pextlb $8, $0, $8 \n\t"
73 "sq $8, 48(%1) \n\t"
74 "add %0, %0, %2 \n\t"
75 "ld $8, 0(%0) \n\t"
76 "pextlb $9, $0, $9 \n\t"
77 "sq $9, 64(%1) \n\t"
78 "add %0, %0, %2 \n\t"
79 "ld $9, 0(%0) \n\t"
80 "pextlb $10, $0, $10 \n\t"
81 "sq $10, 80(%1) \n\t"
82 "pextlb $8, $0, $8 \n\t"
83 "sq $8, 96(%1) \n\t"
84 "pextlb $9, $0, $9 \n\t"
85 "sq $9, 112(%1) \n\t"
86 ".set pop \n\t"
87 : "+r" (pixels) : "r" (block), "r" (line_size) : "$8", "$9", "$10", "memory" );
88 }
89
90
91 static void put_pixels8_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h)
92 {
93 asm volatile(
94 ".set push \n\t"
95 ".set mips3 \n\t"
96 "1: \n\t"
97 "ldr $8, 0(%1) \n\t"
98 "addiu %2, %2, -1 \n\t"
99 "ldl $8, 7(%1) \n\t"
100 "add %1, %1, %3 \n\t"
101 "sd $8, 0(%0) \n\t"
102 "add %0, %0, %3 \n\t"
103 "bgtz %2, 1b \n\t"
104 ".set pop \n\t"
105 : "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size)
106 : "$8", "memory" );
107 }
108
109
110 static void put_pixels16_mmi(uint8_t *block, const uint8_t *pixels, int line_size, int h)
111 {
112 asm volatile (
113 ".set push \n\t"
114 ".set mips3 \n\t"
115 "1: \n\t"
116 "ldr $8, 0(%1) \n\t"
117 "add $11, %1, %3 \n\t"
118 "ldl $8, 7(%1) \n\t"
119 "add $10, %0, %3 \n\t"
120 "ldr $9, 8(%1) \n\t"
121 "ldl $9, 15(%1) \n\t"
122 "ldr $12, 0($11) \n\t"
123 "add %1, $11, %3 \n\t"
124 "ldl $12, 7($11) \n\t"
125 "pcpyld $8, $9, $8 \n\t"
126 "sq $8, 0(%0) \n\t"
127 "ldr $13, 8($11) \n\t"
128 "addiu %2, %2, -2 \n\t"
129 "ldl $13, 15($11) \n\t"
130 "add %0, $10, %3 \n\t"
131 "pcpyld $12, $13, $12 \n\t"
132 "sq $12, 0($10) \n\t"
133 "bgtz %2, 1b \n\t"
134 ".set pop \n\t"
135 : "+r" (block), "+r" (pixels), "+r" (h) : "r" (line_size)
136 : "$8", "$9", "$10", "$11", "$12", "$13", "memory" );
137 }
138
139
140 void dsputil_init_mmi(DSPContext* c, AVCodecContext *avctx)
141 {
142 const int idct_algo= avctx->idct_algo;
143
144 c->clear_blocks = clear_blocks_mmi;
145
146 c->put_pixels_tab[1][0] = put_pixels8_mmi;
147 c->put_no_rnd_pixels_tab[1][0] = put_pixels8_mmi;
148
149 c->put_pixels_tab[0][0] = put_pixels16_mmi;
150 c->put_no_rnd_pixels_tab[0][0] = put_pixels16_mmi;
151
152 c->get_pixels = get_pixels_mmi;
153
154 if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_PS2){
155 c->idct_put= ff_mmi_idct_put;
156 c->idct_add= ff_mmi_idct_add;
157 c->idct = ff_mmi_idct;
158 c->idct_permutation_type= FF_LIBMPEG2_IDCT_PERM;
159 }
160 }
161