Subversion Repositories Kolibri OS

Rev

Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
4349 Serge 1 
/*
2 
 * Alpha optimized DSP utils
3 
 * Copyright (c) 2002 Falk Hueffner
4 
 *
5 
 * This file is part of FFmpeg.
6 
 *
7 
 * FFmpeg is free software; you can redistribute it and/or
8 
 * modify it under the terms of the GNU Lesser General Public
9 
 * License as published by the Free Software Foundation; either
10 
 * version 2.1 of the License, or (at your option) any later version.
11 
 *
12 
 * FFmpeg is distributed in the hope that it will be useful,
13 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15 
 * Lesser General Public License for more details.
16 
 *
17 
 * You should have received a copy of the GNU Lesser General Public
18 
 * License along with FFmpeg; if not, write to the Free Software
19 
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 
 */
21 
 
22 
/*
23 
 * These functions are scheduled for pca56. They should work
24 
 * reasonably on ev6, though.
25 
 */
26 
 
27 
#include "regdef.h"
28 
 
29 
        .set noat
30 
        .set noreorder
31 
        .arch pca56
32 
        .text
33 
 
34 
/************************************************************************
35 
 * void put_pixels_clamped_mvi_asm(const int16_t *block, uint8_t *pixels,
36 
 *                                 int line_size)
37 
 */
38 
        .align 6
39 
        .globl put_pixels_clamped_mvi_asm
40 
        .ent put_pixels_clamped_mvi_asm
41 
put_pixels_clamped_mvi_asm:
42 
        .frame sp, 0, ra
43 
        .prologue 0
44 
 
45 
        lda     t8, -1
46 
        lda     t9, 8           # loop counter
47 
        zap     t8, 0xaa, t8    # 00ff00ff00ff00ff
48 
 
49 
        .align 4
50 
1:      ldq     t0,  0(a0)
51 
        ldq     t1,  8(a0)
52 
        ldq     t2, 16(a0)
53 
        ldq     t3, 24(a0)
54 
 
55 
        maxsw4  t0, zero, t0
56 
        subq    t9, 2, t9
57 
        maxsw4  t1, zero, t1
58 
        lda     a0, 32(a0)
59 
 
60 
        maxsw4  t2, zero, t2
61 
        addq    a1, a2, ta
62 
        maxsw4  t3, zero, t3
63 
        minsw4  t0, t8, t0
64 
 
65 
        minsw4  t1, t8, t1
66 
        minsw4  t2, t8, t2
67 
        minsw4  t3, t8, t3
68 
        pkwb    t0, t0
69 
 
70 
        pkwb    t1, t1
71 
        pkwb    t2, t2
72 
        pkwb    t3, t3
73 
        stl     t0, 0(a1)
74 
 
75 
        stl     t1, 4(a1)
76 
        addq    ta, a2, a1
77 
        stl     t2, 0(ta)
78 
        stl     t3, 4(ta)
79 
 
80 
        bne     t9, 1b
81 
        ret
82 
        .end put_pixels_clamped_mvi_asm
83 
 
84 
/************************************************************************
85 
 * void add_pixels_clamped_mvi_asm(const int16_t *block, uint8_t *pixels,
86 
 *                                 int line_size)
87 
 */
88 
        .align 6
89 
        .globl add_pixels_clamped_mvi_asm
90 
        .ent add_pixels_clamped_mvi_asm
91 
add_pixels_clamped_mvi_asm:
92 
        .frame sp, 0, ra
93 
        .prologue 0
94 
 
95 
        lda     t1, -1
96 
        lda     th, 8
97 
        zap     t1, 0x33, tg
98 
        nop
99 
 
100 
        srl     tg, 1, t0
101 
        xor     tg, t0, tg      # 0x8000800080008000
102 
        zap     t1, 0xaa, tf    # 0x00ff00ff00ff00ff
103 
 
104 
        .align 4
105 
1:      ldl     t1, 0(a1)       # pix0 (try to hit cache line soon)
106 
        ldl     t4, 4(a1)       # pix1
107 
        addq    a1, a2, te      # pixels += line_size
108 
        ldq     t0, 0(a0)       # shorts0
109 
 
110 
        ldl     t7, 0(te)       # pix2 (try to hit cache line soon)
111 
        ldl     ta, 4(te)       # pix3
112 
        ldq     t3, 8(a0)       # shorts1
113 
        ldq     t6, 16(a0)      # shorts2
114 
 
115 
        ldq     t9, 24(a0)      # shorts3
116 
        unpkbw  t1, t1          # 0 0 (quarter/op no.)
117 
        and     t0, tg, t2      # 0 1
118 
        unpkbw  t4, t4          # 1 0
119 
 
120 
        bic     t0, tg, t0      # 0 2
121 
        unpkbw  t7, t7          # 2 0
122 
        and     t3, tg, t5      # 1 1
123 
        addq    t0, t1, t0      # 0 3
124 
 
125 
        xor     t0, t2, t0      # 0 4
126 
        unpkbw  ta, ta          # 3 0
127 
        and     t6, tg, t8      # 2 1
128 
        maxsw4  t0, zero, t0    # 0 5
129 
 
130 
        bic     t3, tg, t3      # 1 2
131 
        bic     t6, tg, t6      # 2 2
132 
        minsw4  t0, tf, t0      # 0 6
133 
        addq    t3, t4, t3      # 1 3
134 
 
135 
        pkwb    t0, t0          # 0 7
136 
        xor     t3, t5, t3      # 1 4
137 
        maxsw4  t3, zero, t3    # 1 5
138 
        addq    t6, t7, t6      # 2 3
139 
 
140 
        xor     t6, t8, t6      # 2 4
141 
        and     t9, tg, tb      # 3 1
142 
        minsw4  t3, tf, t3      # 1 6
143 
        bic     t9, tg, t9      # 3 2
144 
 
145 
        maxsw4  t6, zero, t6    # 2 5
146 
        addq    t9, ta, t9      # 3 3
147 
        stl     t0, 0(a1)       # 0 8
148 
        minsw4  t6, tf, t6      # 2 6
149 
 
150 
        xor     t9, tb, t9      # 3 4
151 
        maxsw4  t9, zero, t9    # 3 5
152 
        lda     a0, 32(a0)      # block += 16;
153 
        pkwb    t3, t3          # 1 7
154 
 
155 
        minsw4  t9, tf, t9      # 3 6
156 
        subq    th, 2, th
157 
        pkwb    t6, t6          # 2 7
158 
        pkwb    t9, t9          # 3 7
159 
 
160 
        stl     t3, 4(a1)       # 1 8
161 
        addq    te, a2, a1      # pixels += line_size
162 
        stl     t6, 0(te)       # 2 8
163 
        stl     t9, 4(te)       # 3 8
164 
 
165 
        bne     th, 1b
166 
        ret
167 
        .end add_pixels_clamped_mvi_asm