blob: 0af3d8bef8b8a3d74aab40038a8751b0a04122cc
| 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 "me_cmp.h" |
| 29 | #include "mpegvideoencdsp.h" |
| 30 | |
| 31 | static int try_8x8basis_c(int16_t rem[64], int16_t weight[64], |
| 32 | int16_t basis[64], int scale) |
| 33 | { |
| 34 | int i; |
| 35 | unsigned int sum = 0; |
| 36 | |
| 37 | for (i = 0; i < 8 * 8; i++) { |
| 38 | int b = rem[i] + ((basis[i] * scale + |
| 39 | (1 << (BASIS_SHIFT - RECON_SHIFT - 1))) >> |
| 40 | (BASIS_SHIFT - RECON_SHIFT)); |
| 41 | int w = weight[i]; |
| 42 | b >>= RECON_SHIFT; |
| 43 | av_assert2(-512 < b && b < 512); |
| 44 | |
| 45 | sum += (w * b) * (w * b) >> 4; |
| 46 | } |
| 47 | return sum >> 2; |
| 48 | } |
| 49 | |
| 50 | static void add_8x8basis_c(int16_t rem[64], int16_t basis[64], int scale) |
| 51 | { |
| 52 | int i; |
| 53 | |
| 54 | for (i = 0; i < 8 * 8; i++) |
| 55 | rem[i] += (basis[i] * scale + |
| 56 | (1 << (BASIS_SHIFT - RECON_SHIFT - 1))) >> |
| 57 | (BASIS_SHIFT - RECON_SHIFT); |
| 58 | } |
| 59 | |
| 60 | static int pix_sum_c(uint8_t *pix, int line_size) |
| 61 | { |
| 62 | int s = 0, i, j; |
| 63 | |
| 64 | for (i = 0; i < 16; i++) { |
| 65 | for (j = 0; j < 16; j += 8) { |
| 66 | s += pix[0]; |
| 67 | s += pix[1]; |
| 68 | s += pix[2]; |
| 69 | s += pix[3]; |
| 70 | s += pix[4]; |
| 71 | s += pix[5]; |
| 72 | s += pix[6]; |
| 73 | s += pix[7]; |
| 74 | pix += 8; |
| 75 | } |
| 76 | pix += line_size - 16; |
| 77 | } |
| 78 | return s; |
| 79 | } |
| 80 | |
| 81 | static int pix_norm1_c(uint8_t *pix, int line_size) |
| 82 | { |
| 83 | int s = 0, i, j; |
| 84 | uint32_t *sq = ff_square_tab + 256; |
| 85 | |
| 86 | for (i = 0; i < 16; i++) { |
| 87 | for (j = 0; j < 16; j += 8) { |
| 88 | #if HAVE_FAST_64BIT |
| 89 | register uint64_t x = *(uint64_t *) pix; |
| 90 | s += sq[x & 0xff]; |
| 91 | s += sq[(x >> 8) & 0xff]; |
| 92 | s += sq[(x >> 16) & 0xff]; |
| 93 | s += sq[(x >> 24) & 0xff]; |
| 94 | s += sq[(x >> 32) & 0xff]; |
| 95 | s += sq[(x >> 40) & 0xff]; |
| 96 | s += sq[(x >> 48) & 0xff]; |
| 97 | s += sq[(x >> 56) & 0xff]; |
| 98 | #else |
| 99 | register uint32_t x = *(uint32_t *) pix; |
| 100 | s += sq[x & 0xff]; |
| 101 | s += sq[(x >> 8) & 0xff]; |
| 102 | s += sq[(x >> 16) & 0xff]; |
| 103 | s += sq[(x >> 24) & 0xff]; |
| 104 | x = *(uint32_t *) (pix + 4); |
| 105 | s += sq[x & 0xff]; |
| 106 | s += sq[(x >> 8) & 0xff]; |
| 107 | s += sq[(x >> 16) & 0xff]; |
| 108 | s += sq[(x >> 24) & 0xff]; |
| 109 | #endif |
| 110 | pix += 8; |
| 111 | } |
| 112 | pix += line_size - 16; |
| 113 | } |
| 114 | return s; |
| 115 | } |
| 116 | |
| 117 | /* draw the edges of width 'w' of an image of size width, height */ |
| 118 | // FIXME: Check that this is OK for MPEG-4 interlaced. |
| 119 | static void draw_edges_8_c(uint8_t *buf, int wrap, int width, int height, |
| 120 | int w, int h, int sides) |
| 121 | { |
| 122 | uint8_t *ptr = buf, *last_line; |
| 123 | int i; |
| 124 | |
| 125 | /* left and right */ |
| 126 | for (i = 0; i < height; i++) { |
| 127 | memset(ptr - w, ptr[0], w); |
| 128 | memset(ptr + width, ptr[width - 1], w); |
| 129 | ptr += wrap; |
| 130 | } |
| 131 | |
| 132 | /* top and bottom + corners */ |
| 133 | buf -= w; |
| 134 | last_line = buf + (height - 1) * wrap; |
| 135 | if (sides & EDGE_TOP) |
| 136 | for (i = 0; i < h; i++) |
| 137 | // top |
| 138 | memcpy(buf - (i + 1) * wrap, buf, width + w + w); |
| 139 | if (sides & EDGE_BOTTOM) |
| 140 | for (i = 0; i < h; i++) |
| 141 | // bottom |
| 142 | memcpy(last_line + (i + 1) * wrap, last_line, width + w + w); |
| 143 | } |
| 144 | |
| 145 | /* 2x2 -> 1x1 */ |
| 146 | static void shrink22(uint8_t *dst, int dst_wrap, |
| 147 | const uint8_t *src, int src_wrap, |
| 148 | int width, int height) |
| 149 | { |
| 150 | int w; |
| 151 | const uint8_t *s1, *s2; |
| 152 | uint8_t *d; |
| 153 | |
| 154 | for (; height > 0; height--) { |
| 155 | s1 = src; |
| 156 | s2 = s1 + src_wrap; |
| 157 | d = dst; |
| 158 | for (w = width; w >= 4; w -= 4) { |
| 159 | d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2; |
| 160 | d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 2; |
| 161 | d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 2; |
| 162 | d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 2; |
| 163 | s1 += 8; |
| 164 | s2 += 8; |
| 165 | d += 4; |
| 166 | } |
| 167 | for (; w > 0; w--) { |
| 168 | d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 2; |
| 169 | s1 += 2; |
| 170 | s2 += 2; |
| 171 | d++; |
| 172 | } |
| 173 | src += 2 * src_wrap; |
| 174 | dst += dst_wrap; |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | /* 4x4 -> 1x1 */ |
| 179 | static void shrink44(uint8_t *dst, int dst_wrap, |
| 180 | const uint8_t *src, int src_wrap, |
| 181 | int width, int height) |
| 182 | { |
| 183 | int w; |
| 184 | const uint8_t *s1, *s2, *s3, *s4; |
| 185 | uint8_t *d; |
| 186 | |
| 187 | for (; height > 0; height--) { |
| 188 | s1 = src; |
| 189 | s2 = s1 + src_wrap; |
| 190 | s3 = s2 + src_wrap; |
| 191 | s4 = s3 + src_wrap; |
| 192 | d = dst; |
| 193 | for (w = width; w > 0; w--) { |
| 194 | d[0] = (s1[0] + s1[1] + s1[2] + s1[3] + |
| 195 | s2[0] + s2[1] + s2[2] + s2[3] + |
| 196 | s3[0] + s3[1] + s3[2] + s3[3] + |
| 197 | s4[0] + s4[1] + s4[2] + s4[3] + 8) >> 4; |
| 198 | s1 += 4; |
| 199 | s2 += 4; |
| 200 | s3 += 4; |
| 201 | s4 += 4; |
| 202 | d++; |
| 203 | } |
| 204 | src += 4 * src_wrap; |
| 205 | dst += dst_wrap; |
| 206 | } |
| 207 | } |
| 208 | |
| 209 | /* 8x8 -> 1x1 */ |
| 210 | static void shrink88(uint8_t *dst, int dst_wrap, |
| 211 | const uint8_t *src, int src_wrap, |
| 212 | int width, int height) |
| 213 | { |
| 214 | int w, i; |
| 215 | |
| 216 | for (; height > 0; height--) { |
| 217 | for(w = width;w > 0; w--) { |
| 218 | int tmp = 0; |
| 219 | for (i = 0; i < 8; i++) { |
| 220 | tmp += src[0] + src[1] + src[2] + src[3] + |
| 221 | src[4] + src[5] + src[6] + src[7]; |
| 222 | src += src_wrap; |
| 223 | } |
| 224 | *(dst++) = (tmp + 32) >> 6; |
| 225 | src += 8 - 8 * src_wrap; |
| 226 | } |
| 227 | src += 8 * src_wrap - 8 * width; |
| 228 | dst += dst_wrap - width; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | av_cold void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, |
| 233 | AVCodecContext *avctx) |
| 234 | { |
| 235 | c->try_8x8basis = try_8x8basis_c; |
| 236 | c->add_8x8basis = add_8x8basis_c; |
| 237 | |
| 238 | c->shrink[0] = av_image_copy_plane; |
| 239 | c->shrink[1] = shrink22; |
| 240 | c->shrink[2] = shrink44; |
| 241 | c->shrink[3] = shrink88; |
| 242 | |
| 243 | c->pix_sum = pix_sum_c; |
| 244 | c->pix_norm1 = pix_norm1_c; |
| 245 | |
| 246 | c->draw_edges = draw_edges_8_c; |
| 247 | |
| 248 | if (ARCH_ARM) |
| 249 | ff_mpegvideoencdsp_init_arm(c, avctx); |
| 250 | if (ARCH_PPC) |
| 251 | ff_mpegvideoencdsp_init_ppc(c, avctx); |
| 252 | if (ARCH_X86) |
| 253 | ff_mpegvideoencdsp_init_x86(c, avctx); |
| 254 | if (ARCH_MIPS) |
| 255 | ff_mpegvideoencdsp_init_mips(c, avctx); |
| 256 | } |
| 257 |