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1 | /* |
2 | * This file is part of FFmpeg. | |
3 | * | |
4 | * FFmpeg is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU Lesser General Public | |
6 | * License as published by the Free Software Foundation; either | |
7 | * version 2.1 of the License, or (at your option) any later version. | |
8 | * | |
9 | * FFmpeg is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | * Lesser General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU Lesser General Public | |
15 | * License along with FFmpeg; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
17 | */ | |
18 | ||
19 | #include <assert.h> | |
20 | #include <stdint.h> | |
21 | #include <string.h> | |
22 | ||
23 | #include "config.h" | |
24 | #include "libavutil/avassert.h" | |
25 | #include "libavutil/attributes.h" | |
26 | #include "libavutil/imgutils.h" | |
27 | #include "avcodec.h" | |
28 | #include "imgconvert.h" | |
29 | #include "me_cmp.h" | |
30 | #include "mpegvideoencdsp.h" | |
31 | ||
32 | static int try_8x8basis_c(int16_t rem[64], int16_t weight[64], | |
33 | int16_t basis[64], int scale) | |
34 | { | |
35 | int i; | |
36 | unsigned int sum = 0; | |
37 | ||
38 | for (i = 0; i < 8 * 8; i++) { | |
39 | int b = rem[i] + ((basis[i] * scale + | |
40 | (1 << (BASIS_SHIFT - RECON_SHIFT - 1))) >> | |
41 | (BASIS_SHIFT - RECON_SHIFT)); | |
42 | int w = weight[i]; | |
43 | b >>= RECON_SHIFT; | |
44 | av_assert2(-512 < b && b < 512); | |
45 | ||
46 | sum += (w * b) * (w * b) >> 4; | |
47 | } | |
48 | return sum >> 2; | |
49 | } | |
50 | ||
51 | static void add_8x8basis_c(int16_t rem[64], int16_t basis[64], int scale) | |
52 | { | |
53 | int i; | |
54 | ||
55 | for (i = 0; i < 8 * 8; i++) | |
56 | rem[i] += (basis[i] * scale + | |
57 | (1 << (BASIS_SHIFT - RECON_SHIFT - 1))) >> | |
58 | (BASIS_SHIFT - RECON_SHIFT); | |
59 | } | |
60 | ||
61 | static int pix_sum_c(uint8_t *pix, int line_size) | |
62 | { | |
63 | int s = 0, i, j; | |
64 | ||
65 | for (i = 0; i < 16; i++) { | |
66 | for (j = 0; j < 16; j += 8) { | |
67 | s += pix[0]; | |
68 | s += pix[1]; | |
69 | s += pix[2]; | |
70 | s += pix[3]; | |
71 | s += pix[4]; | |
72 | s += pix[5]; | |
73 | s += pix[6]; | |
74 | s += pix[7]; | |
75 | pix += 8; | |
76 | } | |
77 | pix += line_size - 16; | |
78 | } | |
79 | return s; | |
80 | } | |
81 | ||
82 | static int pix_norm1_c(uint8_t *pix, int line_size) | |
83 | { | |
84 | int s = 0, i, j; | |
85 | uint32_t *sq = ff_square_tab + 256; | |
86 | ||
87 | for (i = 0; i < 16; i++) { | |
88 | for (j = 0; j < 16; j += 8) { | |
89 | #if 0 | |
90 | s += sq[pix[0]]; | |
91 | s += sq[pix[1]]; | |
92 | s += sq[pix[2]]; | |
93 | s += sq[pix[3]]; | |
94 | s += sq[pix[4]]; | |
95 | s += sq[pix[5]]; | |
96 | s += sq[pix[6]]; | |
97 | s += sq[pix[7]]; | |
98 | #else | |
99 | #if HAVE_FAST_64BIT | |
100 | register uint64_t x = *(uint64_t *) pix; | |
101 | s += sq[x & 0xff]; | |
102 | s += sq[(x >> 8) & 0xff]; | |
103 | s += sq[(x >> 16) & 0xff]; | |
104 | s += sq[(x >> 24) & 0xff]; | |
105 | s += sq[(x >> 32) & 0xff]; | |
106 | s += sq[(x >> 40) & 0xff]; | |
107 | s += sq[(x >> 48) & 0xff]; | |
108 | s += sq[(x >> 56) & 0xff]; | |
109 | #else | |
110 | register uint32_t x = *(uint32_t *) pix; | |
111 | s += sq[x & 0xff]; | |
112 | s += sq[(x >> 8) & 0xff]; | |
113 | s += sq[(x >> 16) & 0xff]; | |
114 | s += sq[(x >> 24) & 0xff]; | |
115 | x = *(uint32_t *) (pix + 4); | |
116 | s += sq[x & 0xff]; | |
117 | s += sq[(x >> 8) & 0xff]; | |
118 | s += sq[(x >> 16) & 0xff]; | |
119 | s += sq[(x >> 24) & 0xff]; | |
120 | #endif | |
121 | #endif | |
122 | pix += 8; | |
123 | } | |
124 | pix += line_size - 16; | |
125 | } | |
126 | return s; | |
127 | } | |
128 | ||
129 | /* draw the edges of width 'w' of an image of size width, height */ | |
130 | // FIXME: Check that this is OK for MPEG-4 interlaced. | |
131 | static void draw_edges_8_c(uint8_t *buf, int wrap, int width, int height, | |
132 | int w, int h, int sides) | |
133 | { | |
134 | uint8_t *ptr = buf, *last_line; | |
135 | int i; | |
136 | ||
137 | /* left and right */ | |
138 | for (i = 0; i < height; i++) { | |
139 | memset(ptr - w, ptr[0], w); | |
140 | memset(ptr + width, ptr[width - 1], w); | |
141 | ptr += wrap; | |
142 | } | |
143 | ||
144 | /* top and bottom + corners */ | |
145 | buf -= w; | |
146 | last_line = buf + (height - 1) * wrap; | |
147 | if (sides & EDGE_TOP) | |
148 | for (i = 0; i < h; i++) | |
149 | // top | |
150 | memcpy(buf - (i + 1) * wrap, buf, width + w + w); | |
151 | if (sides & EDGE_BOTTOM) | |
152 | for (i = 0; i < h; i++) | |
153 | // bottom | |
154 | memcpy(last_line + (i + 1) * wrap, last_line, width + w + w); | |
155 | } | |
156 | ||
157 | av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, | |
158 | AVCodecContext *avctx) | |
159 | { | |
160 | c->try_8x8basis = try_8x8basis_c; | |
161 | c->add_8x8basis = add_8x8basis_c; | |
162 | ||
163 | c->shrink[0] = av_image_copy_plane; | |
164 | c->shrink[1] = ff_shrink22; | |
165 | c->shrink[2] = ff_shrink44; | |
166 | c->shrink[3] = ff_shrink88; | |
167 | ||
168 | c->pix_sum = pix_sum_c; | |
169 | c->pix_norm1 = pix_norm1_c; | |
170 | ||
171 | c->draw_edges = draw_edges_8_c; | |
172 | ||
173 | if (ARCH_ARM) | |
174 | ff_mpegvideoencdsp_init_arm(c, avctx); | |
175 | if (ARCH_PPC) | |
176 | ff_mpegvideoencdsp_init_ppc(c, avctx); | |
177 | if (ARCH_X86) | |
178 | ff_mpegvideoencdsp_init_x86(c, avctx); | |
179 | } |