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1 : | edgomez | 212 | /***************************************************************************** |
2 : | edgomez | 195 | * |
3 : | edgomez | 212 | * XVID MPEG-4 VIDEO CODEC |
4 : | edgomez | 851 | * - 8bit<->16bit transfer - |
5 : | edgomez | 195 | * |
6 : | edgomez | 1382 | * Copyright(C) 2001-2003 Peter Ross <pross@xvid.org> |
7 : | * | ||
8 : | edgomez | 851 | * This program is free software ; you can redistribute it and/or modify |
9 : | * it under the terms of the GNU General Public License as published by | ||
10 : | * the Free Software Foundation ; either version 2 of the License, or | ||
11 : | edgomez | 212 | * (at your option) any later version. |
12 : | edgomez | 195 | * |
13 : | edgomez | 212 | * This program is distributed in the hope that it will be useful, |
14 : | edgomez | 851 | * but WITHOUT ANY WARRANTY ; without even the implied warranty of |
15 : | edgomez | 212 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 : | * GNU General Public License for more details. | ||
17 : | edgomez | 195 | * |
18 : | edgomez | 212 | * You should have received a copy of the GNU General Public License |
19 : | edgomez | 851 | * along with this program ; if not, write to the Free Software |
20 : | edgomez | 212 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
21 : | edgomez | 195 | * |
22 : | Isibaar | 1988 | * $Id$ |
23 : | edgomez | 195 | * |
24 : | edgomez | 212 | ****************************************************************************/ |
25 : | edgomez | 195 | |
26 : | edgomez | 212 | #include "../global.h" |
27 : | #include "mem_transfer.h" | ||
28 : | edgomez | 195 | |
29 : | edgomez | 212 | /* Function pointers - Initialized in the xvid.c module */ |
30 : | |||
31 : | TRANSFER_8TO16COPY_PTR transfer_8to16copy; | ||
32 : | TRANSFER_16TO8COPY_PTR transfer_16to8copy; | ||
33 : | |||
34 : | edgomez | 195 | TRANSFER_8TO16SUB_PTR transfer_8to16sub; |
35 : | edgomez | 851 | TRANSFER_8TO16SUBRO_PTR transfer_8to16subro; |
36 : | edgomez | 195 | TRANSFER_8TO16SUB2_PTR transfer_8to16sub2; |
37 : | syskin | 1583 | TRANSFER_8TO16SUB2RO_PTR transfer_8to16sub2ro; |
38 : | edgomez | 195 | TRANSFER_16TO8ADD_PTR transfer_16to8add; |
39 : | |||
40 : | edgomez | 212 | TRANSFER8X8_COPY_PTR transfer8x8_copy; |
41 : | suxen_drol | 1632 | TRANSFER8X4_COPY_PTR transfer8x4_copy; |
42 : | edgomez | 195 | |
43 : | Skal | 1620 | #define USE_REFERENCE_C |
44 : | edgomez | 212 | |
45 : | edgomez | 195 | /***************************************************************************** |
46 : | * | ||
47 : | edgomez | 212 | * All these functions are used to transfer data from a 8 bit data array |
48 : | edgomez | 195 | * to a 16 bit data array. |
49 : | edgomez | 212 | * |
50 : | edgomez | 195 | * This is typically used during motion compensation, that's why some |
51 : | * functions also do the addition/substraction of another buffer during the | ||
52 : | * so called transfer. | ||
53 : | * | ||
54 : | edgomez | 212 | ****************************************************************************/ |
55 : | |||
56 : | /* | ||
57 : | * SRC - the source buffer | ||
58 : | * DST - the destination buffer | ||
59 : | * | ||
60 : | * Then the function does the 8->16 bit transfer and this serie of operations : | ||
61 : | * | ||
62 : | * SRC (8bit) = SRC | ||
63 : | * DST (16bit) = SRC | ||
64 : | edgomez | 195 | */ |
65 : | edgomez | 212 | void |
66 : | transfer_8to16copy_c(int16_t * const dst, | ||
67 : | const uint8_t * const src, | ||
68 : | uint32_t stride) | ||
69 : | { | ||
70 : | Skal | 1620 | int i, j; |
71 : | edgomez | 212 | for (j = 0; j < 8; j++) { |
72 : | for (i = 0; i < 8; i++) { | ||
73 : | edgomez | 195 | dst[j * 8 + i] = (int16_t) src[j * stride + i]; |
74 : | Isibaar | 1627 | } |
75 : | edgomez | 195 | } |
76 : | } | ||
77 : | |||
78 : | /* | ||
79 : | * SRC - the source buffer | ||
80 : | * DST - the destination buffer | ||
81 : | * | ||
82 : | * Then the function does the 8->16 bit transfer and this serie of operations : | ||
83 : | * | ||
84 : | * SRC (16bit) = SRC | ||
85 : | * DST (8bit) = max(min(SRC, 255), 0) | ||
86 : | */ | ||
87 : | edgomez | 212 | void |
88 : | transfer_16to8copy_c(uint8_t * const dst, | ||
89 : | const int16_t * const src, | ||
90 : | uint32_t stride) | ||
91 : | { | ||
92 : | Skal | 1620 | int i, j; |
93 : | edgomez | 195 | |
94 : | edgomez | 212 | for (j = 0; j < 8; j++) { |
95 : | for (i = 0; i < 8; i++) { | ||
96 : | Skal | 1620 | #ifdef USE_REFERENCE_C |
97 : | edgomez | 195 | int16_t pixel = src[j * 8 + i]; |
98 : | |||
99 : | if (pixel < 0) { | ||
100 : | pixel = 0; | ||
101 : | } else if (pixel > 255) { | ||
102 : | pixel = 255; | ||
103 : | } | ||
104 : | dst[j * stride + i] = (uint8_t) pixel; | ||
105 : | Skal | 1620 | #else |
106 : | const int16_t pixel = src[j * 8 + i]; | ||
107 : | const uint8_t value = (uint8_t)( (pixel&~255) ? (-pixel)>>(8*sizeof(pixel)-1) : pixel ); | ||
108 : | dst[j*stride + i] = value; | ||
109 : | #endif | ||
110 : | } | ||
111 : | edgomez | 195 | } |
112 : | } | ||
113 : | |||
114 : | |||
115 : | |||
116 : | |||
117 : | /* | ||
118 : | * C - the current buffer | ||
119 : | * R - the reference buffer | ||
120 : | * DCT - the dct coefficient buffer | ||
121 : | * | ||
122 : | * Then the function does the 8->16 bit transfer and this serie of operations : | ||
123 : | * | ||
124 : | * R (8bit) = R | ||
125 : | * C (8bit) = R | ||
126 : | * DCT (16bit) = C - R | ||
127 : | edgomez | 212 | */ |
128 : | void | ||
129 : | transfer_8to16sub_c(int16_t * const dct, | ||
130 : | uint8_t * const cur, | ||
131 : | const uint8_t * ref, | ||
132 : | const uint32_t stride) | ||
133 : | { | ||
134 : | Skal | 1620 | int i, j; |
135 : | edgomez | 212 | |
136 : | for (j = 0; j < 8; j++) { | ||
137 : | edgomez | 195 | for (i = 0; i < 8; i++) { |
138 : | Skal | 1620 | const uint8_t c = cur[j * stride + i]; |
139 : | const uint8_t r = ref[j * stride + i]; | ||
140 : | edgomez | 195 | |
141 : | cur[j * stride + i] = r; | ||
142 : | dct[j * 8 + i] = (int16_t) c - (int16_t) r; | ||
143 : | } | ||
144 : | } | ||
145 : | } | ||
146 : | |||
147 : | |||
148 : | edgomez | 851 | void |
149 : | transfer_8to16subro_c(int16_t * const dct, | ||
150 : | const uint8_t * const cur, | ||
151 : | const uint8_t * ref, | ||
152 : | const uint32_t stride) | ||
153 : | { | ||
154 : | Skal | 1620 | int i, j; |
155 : | edgomez | 851 | |
156 : | for (j = 0; j < 8; j++) { | ||
157 : | for (i = 0; i < 8; i++) { | ||
158 : | Skal | 1620 | const uint8_t c = cur[j * stride + i]; |
159 : | const uint8_t r = ref[j * stride + i]; | ||
160 : | edgomez | 851 | dct[j * 8 + i] = (int16_t) c - (int16_t) r; |
161 : | } | ||
162 : | } | ||
163 : | } | ||
164 : | |||
165 : | |||
166 : | |||
167 : | edgomez | 195 | /* |
168 : | * C - the current buffer | ||
169 : | * R1 - the 1st reference buffer | ||
170 : | * R2 - the 2nd reference buffer | ||
171 : | * DCT - the dct coefficient buffer | ||
172 : | * | ||
173 : | * Then the function does the 8->16 bit transfer and this serie of operations : | ||
174 : | * | ||
175 : | * R1 (8bit) = R1 | ||
176 : | * R2 (8bit) = R2 | ||
177 : | edgomez | 1382 | * R (temp) = min((R1 + R2)/2, 255) |
178 : | * DCT (16bit)= C - R | ||
179 : | * C (8bit) = R | ||
180 : | edgomez | 212 | */ |
181 : | void | ||
182 : | transfer_8to16sub2_c(int16_t * const dct, | ||
183 : | uint8_t * const cur, | ||
184 : | const uint8_t * ref1, | ||
185 : | const uint8_t * ref2, | ||
186 : | const uint32_t stride) | ||
187 : | { | ||
188 : | uint32_t i, j; | ||
189 : | |||
190 : | edgomez | 195 | for (j = 0; j < 8; j++) { |
191 : | for (i = 0; i < 8; i++) { | ||
192 : | Skal | 1620 | const uint8_t c = cur[j * stride + i]; |
193 : | const uint8_t r = (ref1[j * stride + i] + ref2[j * stride + i] + 1) >> 1; | ||
194 : | edgomez | 1382 | cur[j * stride + i] = r; |
195 : | edgomez | 195 | dct[j * 8 + i] = (int16_t) c - (int16_t) r; |
196 : | } | ||
197 : | } | ||
198 : | } | ||
199 : | |||
200 : | syskin | 1583 | void |
201 : | transfer_8to16sub2ro_c(int16_t * const dct, | ||
202 : | const uint8_t * const cur, | ||
203 : | const uint8_t * ref1, | ||
204 : | const uint8_t * ref2, | ||
205 : | const uint32_t stride) | ||
206 : | { | ||
207 : | uint32_t i, j; | ||
208 : | edgomez | 195 | |
209 : | syskin | 1583 | for (j = 0; j < 8; j++) { |
210 : | for (i = 0; i < 8; i++) { | ||
211 : | Skal | 1620 | const uint8_t c = cur[j * stride + i]; |
212 : | const uint8_t r = (ref1[j * stride + i] + ref2[j * stride + i] + 1) >> 1; | ||
213 : | syskin | 1583 | dct[j * 8 + i] = (int16_t) c - (int16_t) r; |
214 : | } | ||
215 : | } | ||
216 : | } | ||
217 : | |||
218 : | |||
219 : | edgomez | 195 | /* |
220 : | * SRC - the source buffer | ||
221 : | * DST - the destination buffer | ||
222 : | * | ||
223 : | * Then the function does the 16->8 bit transfer and this serie of operations : | ||
224 : | * | ||
225 : | * SRC (16bit) = SRC | ||
226 : | * DST (8bit) = max(min(DST+SRC, 255), 0) | ||
227 : | */ | ||
228 : | edgomez | 212 | void |
229 : | transfer_16to8add_c(uint8_t * const dst, | ||
230 : | const int16_t * const src, | ||
231 : | uint32_t stride) | ||
232 : | { | ||
233 : | Skal | 1620 | int i, j; |
234 : | edgomez | 212 | |
235 : | for (j = 0; j < 8; j++) { | ||
236 : | for (i = 0; i < 8; i++) { | ||
237 : | Skal | 1620 | #ifdef USE_REFERENCE_C |
238 : | edgomez | 195 | int16_t pixel = (int16_t) dst[j * stride + i] + src[j * 8 + i]; |
239 : | |||
240 : | if (pixel < 0) { | ||
241 : | pixel = 0; | ||
242 : | } else if (pixel > 255) { | ||
243 : | pixel = 255; | ||
244 : | } | ||
245 : | dst[j * stride + i] = (uint8_t) pixel; | ||
246 : | Skal | 1620 | #else |
247 : | const int16_t pixel = (int16_t) dst[j * stride + i] + src[j * 8 + i]; | ||
248 : | const uint8_t value = (uint8_t)( (pixel&~255) ? (-pixel)>>(8*sizeof(pixel)-1) : pixel ); | ||
249 : | dst[j*stride + i] = value; | ||
250 : | #endif | ||
251 : | |||
252 : | edgomez | 195 | } |
253 : | } | ||
254 : | } | ||
255 : | |||
256 : | /* | ||
257 : | * SRC - the source buffer | ||
258 : | * DST - the destination buffer | ||
259 : | * | ||
260 : | * Then the function does the 8->8 bit transfer and this serie of operations : | ||
261 : | * | ||
262 : | * SRC (8bit) = SRC | ||
263 : | * DST (8bit) = SRC | ||
264 : | */ | ||
265 : | edgomez | 212 | void |
266 : | transfer8x8_copy_c(uint8_t * const dst, | ||
267 : | const uint8_t * const src, | ||
268 : | const uint32_t stride) | ||
269 : | { | ||
270 : | Skal | 1620 | int j, i; |
271 : | edgomez | 195 | |
272 : | Isibaar | 1612 | for (j = 0; j < 8; ++j) { |
273 : | uint8_t *d = dst + j*stride; | ||
274 : | const uint8_t *s = src + j*stride; | ||
275 : | |||
276 : | for (i = 0; i < 8; ++i) | ||
277 : | { | ||
278 : | *d++ = *s++; | ||
279 : | } | ||
280 : | edgomez | 195 | } |
281 : | } | ||
282 : | suxen_drol | 1632 | |
283 : | /* | ||
284 : | * SRC - the source buffer | ||
285 : | * DST - the destination buffer | ||
286 : | * | ||
287 : | * Then the function does the 8->8 bit transfer and this serie of operations : | ||
288 : | * | ||
289 : | * SRC (8bit) = SRC | ||
290 : | * DST (8bit) = SRC | ||
291 : | */ | ||
292 : | void | ||
293 : | transfer8x4_copy_c(uint8_t * const dst, | ||
294 : | const uint8_t * const src, | ||
295 : | const uint32_t stride) | ||
296 : | { | ||
297 : | uint32_t j; | ||
298 : | |||
299 : | for (j = 0; j < 4; j++) { | ||
300 : | uint32_t *d= (uint32_t*)(dst + j*stride); | ||
301 : | const uint32_t *s = (const uint32_t*)(src + j*stride); | ||
302 : | *(d+0) = *(s+0); | ||
303 : | *(d+1) = *(s+1); | ||
304 : | } | ||
305 : | } |
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