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rtpmap is case-insensitive, see comment from Luca in "[PATCH] rtsp.c:
[ffmpeg-lucabe.git] / libavcodec / vc1dsp.c
blobab7a9a6722fd73d82a86ef3e98c6f779e09b5250
1 /*
2 * VC-1 and WMV3 decoder - DSP functions
3 * Copyright (c) 2006 Konstantin Shishkov
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 * @file libavcodec/vc1dsp.c
24 * VC-1 and WMV3 decoder
25 *
26 */
27
28 #include "dsputil.h"
29
30
31 /** Apply overlap transform to horizontal edge
32 */
33 static void vc1_v_overlap_c(uint8_t* src, int stride)
34 {
35 int i;
36 int a, b, c, d;
37 int d1, d2;
38 int rnd = 1;
39 for(i = 0; i < 8; i++) {
40 a = src[-2*stride];
41 b = src[-stride];
42 c = src[0];
43 d = src[stride];
44 d1 = (a - d + 3 + rnd) >> 3;
45 d2 = (a - d + b - c + 4 - rnd) >> 3;
46
47 src[-2*stride] = a - d1;
48 src[-stride] = av_clip_uint8(b - d2);
49 src[0] = av_clip_uint8(c + d2);
50 src[stride] = d + d1;
51 src++;
52 rnd = !rnd;
53 }
54 }
55
56 /** Apply overlap transform to vertical edge
57 */
58 static void vc1_h_overlap_c(uint8_t* src, int stride)
59 {
60 int i;
61 int a, b, c, d;
62 int d1, d2;
63 int rnd = 1;
64 for(i = 0; i < 8; i++) {
65 a = src[-2];
66 b = src[-1];
67 c = src[0];
68 d = src[1];
69 d1 = (a - d + 3 + rnd) >> 3;
70 d2 = (a - d + b - c + 4 - rnd) >> 3;
71
72 src[-2] = a - d1;
73 src[-1] = av_clip_uint8(b - d2);
74 src[0] = av_clip_uint8(c + d2);
75 src[1] = d + d1;
76 src += stride;
77 rnd = !rnd;
78 }
79 }
80
81
82 /** Do inverse transform on 8x8 block
83 */
84 static void vc1_inv_trans_8x8_c(DCTELEM block[64])
85 {
86 int i;
87 register int t1,t2,t3,t4,t5,t6,t7,t8;
88 DCTELEM *src, *dst;
89
90 src = block;
91 dst = block;
92 for(i = 0; i < 8; i++){
93 t1 = 12 * (src[0] + src[4]) + 4;
94 t2 = 12 * (src[0] - src[4]) + 4;
95 t3 = 16 * src[2] + 6 * src[6];
96 t4 = 6 * src[2] - 16 * src[6];
97
98 t5 = t1 + t3;
99 t6 = t2 + t4;
100 t7 = t2 - t4;
101 t8 = t1 - t3;
102
103 t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
104 t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
105 t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
106 t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
107
108 dst[0] = (t5 + t1) >> 3;
109 dst[1] = (t6 + t2) >> 3;
110 dst[2] = (t7 + t3) >> 3;
111 dst[3] = (t8 + t4) >> 3;
112 dst[4] = (t8 - t4) >> 3;
113 dst[5] = (t7 - t3) >> 3;
114 dst[6] = (t6 - t2) >> 3;
115 dst[7] = (t5 - t1) >> 3;
116
117 src += 8;
118 dst += 8;
119 }
120
121 src = block;
122 dst = block;
123 for(i = 0; i < 8; i++){
124 t1 = 12 * (src[ 0] + src[32]) + 64;
125 t2 = 12 * (src[ 0] - src[32]) + 64;
126 t3 = 16 * src[16] + 6 * src[48];
127 t4 = 6 * src[16] - 16 * src[48];
128
129 t5 = t1 + t3;
130 t6 = t2 + t4;
131 t7 = t2 - t4;
132 t8 = t1 - t3;
133
134 t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
135 t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
136 t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
137 t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
138
139 dst[ 0] = (t5 + t1) >> 7;
140 dst[ 8] = (t6 + t2) >> 7;
141 dst[16] = (t7 + t3) >> 7;
142 dst[24] = (t8 + t4) >> 7;
143 dst[32] = (t8 - t4 + 1) >> 7;
144 dst[40] = (t7 - t3 + 1) >> 7;
145 dst[48] = (t6 - t2 + 1) >> 7;
146 dst[56] = (t5 - t1 + 1) >> 7;
147
148 src++;
149 dst++;
150 }
151 }
152
153 /** Do inverse transform on 8x4 part of block
154 */
155 static void vc1_inv_trans_8x4_c(uint8_t *dest, int linesize, DCTELEM *block)
156 {
157 int i;
158 register int t1,t2,t3,t4,t5,t6,t7,t8;
159 DCTELEM *src, *dst;
160 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
161
162 src = block;
163 dst = block;
164 for(i = 0; i < 4; i++){
165 t1 = 12 * (src[0] + src[4]) + 4;
166 t2 = 12 * (src[0] - src[4]) + 4;
167 t3 = 16 * src[2] + 6 * src[6];
168 t4 = 6 * src[2] - 16 * src[6];
169
170 t5 = t1 + t3;
171 t6 = t2 + t4;
172 t7 = t2 - t4;
173 t8 = t1 - t3;
174
175 t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
176 t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
177 t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
178 t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
179
180 dst[0] = (t5 + t1) >> 3;
181 dst[1] = (t6 + t2) >> 3;
182 dst[2] = (t7 + t3) >> 3;
183 dst[3] = (t8 + t4) >> 3;
184 dst[4] = (t8 - t4) >> 3;
185 dst[5] = (t7 - t3) >> 3;
186 dst[6] = (t6 - t2) >> 3;
187 dst[7] = (t5 - t1) >> 3;
188
189 src += 8;
190 dst += 8;
191 }
192
193 src = block;
194 for(i = 0; i < 8; i++){
195 t1 = 17 * (src[ 0] + src[16]) + 64;
196 t2 = 17 * (src[ 0] - src[16]) + 64;
197 t3 = 22 * src[ 8] + 10 * src[24];
198 t4 = 22 * src[24] - 10 * src[ 8];
199
200 dest[0*linesize] = cm[dest[0*linesize] + ((t1 + t3) >> 7)];
201 dest[1*linesize] = cm[dest[1*linesize] + ((t2 - t4) >> 7)];
202 dest[2*linesize] = cm[dest[2*linesize] + ((t2 + t4) >> 7)];
203 dest[3*linesize] = cm[dest[3*linesize] + ((t1 - t3) >> 7)];
204
205 src ++;
206 dest++;
207 }
208 }
209
210 /** Do inverse transform on 4x8 parts of block
211 */
212 static void vc1_inv_trans_4x8_c(uint8_t *dest, int linesize, DCTELEM *block)
213 {
214 int i;
215 register int t1,t2,t3,t4,t5,t6,t7,t8;
216 DCTELEM *src, *dst;
217 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
218
219 src = block;
220 dst = block;
221 for(i = 0; i < 8; i++){
222 t1 = 17 * (src[0] + src[2]) + 4;
223 t2 = 17 * (src[0] - src[2]) + 4;
224 t3 = 22 * src[1] + 10 * src[3];
225 t4 = 22 * src[3] - 10 * src[1];
226
227 dst[0] = (t1 + t3) >> 3;
228 dst[1] = (t2 - t4) >> 3;
229 dst[2] = (t2 + t4) >> 3;
230 dst[3] = (t1 - t3) >> 3;
231
232 src += 8;
233 dst += 8;
234 }
235
236 src = block;
237 for(i = 0; i < 4; i++){
238 t1 = 12 * (src[ 0] + src[32]) + 64;
239 t2 = 12 * (src[ 0] - src[32]) + 64;
240 t3 = 16 * src[16] + 6 * src[48];
241 t4 = 6 * src[16] - 16 * src[48];
242
243 t5 = t1 + t3;
244 t6 = t2 + t4;
245 t7 = t2 - t4;
246 t8 = t1 - t3;
247
248 t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
249 t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
250 t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
251 t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
252
253 dest[0*linesize] = cm[dest[0*linesize] + ((t5 + t1) >> 7)];
254 dest[1*linesize] = cm[dest[1*linesize] + ((t6 + t2) >> 7)];
255 dest[2*linesize] = cm[dest[2*linesize] + ((t7 + t3) >> 7)];
256 dest[3*linesize] = cm[dest[3*linesize] + ((t8 + t4) >> 7)];
257 dest[4*linesize] = cm[dest[4*linesize] + ((t8 - t4 + 1) >> 7)];
258 dest[5*linesize] = cm[dest[5*linesize] + ((t7 - t3 + 1) >> 7)];
259 dest[6*linesize] = cm[dest[6*linesize] + ((t6 - t2 + 1) >> 7)];
260 dest[7*linesize] = cm[dest[7*linesize] + ((t5 - t1 + 1) >> 7)];
261
262 src ++;
263 dest++;
264 }
265 }
266
267 /** Do inverse transform on 4x4 part of block
268 */
269 static void vc1_inv_trans_4x4_c(uint8_t *dest, int linesize, DCTELEM *block)
270 {
271 int i;
272 register int t1,t2,t3,t4;
273 DCTELEM *src, *dst;
274 const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
275
276 src = block;
277 dst = block;
278 for(i = 0; i < 4; i++){
279 t1 = 17 * (src[0] + src[2]) + 4;
280 t2 = 17 * (src[0] - src[2]) + 4;
281 t3 = 22 * src[1] + 10 * src[3];
282 t4 = 22 * src[3] - 10 * src[1];
283
284 dst[0] = (t1 + t3) >> 3;
285 dst[1] = (t2 - t4) >> 3;
286 dst[2] = (t2 + t4) >> 3;
287 dst[3] = (t1 - t3) >> 3;
288
289 src += 8;
290 dst += 8;
291 }
292
293 src = block;
294 for(i = 0; i < 4; i++){
295 t1 = 17 * (src[ 0] + src[16]) + 64;
296 t2 = 17 * (src[ 0] - src[16]) + 64;
297 t3 = 22 * src[ 8] + 10 * src[24];
298 t4 = 22 * src[24] - 10 * src[ 8];
299
300 dest[0*linesize] = cm[dest[0*linesize] + ((t1 + t3) >> 7)];
301 dest[1*linesize] = cm[dest[1*linesize] + ((t2 - t4) >> 7)];
302 dest[2*linesize] = cm[dest[2*linesize] + ((t2 + t4) >> 7)];
303 dest[3*linesize] = cm[dest[3*linesize] + ((t1 - t3) >> 7)];
304
305 src ++;
306 dest++;
307 }
308 }
309
310 /* motion compensation functions */
311 /** Filter in case of 2 filters */
312 #define VC1_MSPEL_FILTER_16B(DIR, TYPE) \
313 static av_always_inline int vc1_mspel_ ## DIR ## _filter_16bits(const TYPE *src, int stride, int mode) \
314 { \
315 switch(mode){ \
316 case 0: /* no shift - should not occur */ \
317 return 0; \
318 case 1: /* 1/4 shift */ \
319 return -4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2]; \
320 case 2: /* 1/2 shift */ \
321 return -src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2]; \
322 case 3: /* 3/4 shift */ \
323 return -3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2]; \
324 } \
325 return 0; /* should not occur */ \
326 }
327
328 VC1_MSPEL_FILTER_16B(ver, uint8_t);
329 VC1_MSPEL_FILTER_16B(hor, int16_t);
330
331
332 /** Filter used to interpolate fractional pel values
333 */
334 static av_always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
335 {
336 switch(mode){
337 case 0: //no shift
338 return src[0];
339 case 1: // 1/4 shift
340 return (-4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2] + 32 - r) >> 6;
341 case 2: // 1/2 shift
342 return (-src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2] + 8 - r) >> 4;
343 case 3: // 3/4 shift
344 return (-3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2] + 32 - r) >> 6;
345 }
346 return 0; //should not occur
347 }
348
349 /** Function used to do motion compensation with bicubic interpolation
350 */
351 static void vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int hmode, int vmode, int rnd)
352 {
353 int i, j;
354
355 if (vmode) { /* Horizontal filter to apply */
356 int r;
357
358 if (hmode) { /* Vertical filter to apply, output to tmp */
359 static const int shift_value[] = { 0, 5, 1, 5 };
360 int shift = (shift_value[hmode]+shift_value[vmode])>>1;
361 int16_t tmp[11*8], *tptr = tmp;
362
363 r = (1<<(shift-1)) + rnd-1;
364
365 src -= 1;
366 for(j = 0; j < 8; j++) {
367 for(i = 0; i < 11; i++)
368 tptr[i] = (vc1_mspel_ver_filter_16bits(src + i, stride, vmode)+r)>>shift;
369 src += stride;
370 tptr += 11;
371 }
372
373 r = 64-rnd;
374 tptr = tmp+1;
375 for(j = 0; j < 8; j++) {
376 for(i = 0; i < 8; i++)
377 dst[i] = av_clip_uint8((vc1_mspel_hor_filter_16bits(tptr + i, 1, hmode)+r)>>7);
378 dst += stride;
379 tptr += 11;
380 }
381
382 return;
383 }
384 else { /* No horizontal filter, output 8 lines to dst */
385 r = 1-rnd;
386
387 for(j = 0; j < 8; j++) {
388 for(i = 0; i < 8; i++)
389 dst[i] = av_clip_uint8(vc1_mspel_filter(src + i, stride, vmode, r));
390 src += stride;
391 dst += stride;
392 }
393 return;
394 }
395 }
396
397 /* Horizontal mode with no vertical mode */
398 for(j = 0; j < 8; j++) {
399 for(i = 0; i < 8; i++)
400 dst[i] = av_clip_uint8(vc1_mspel_filter(src + i, 1, hmode, rnd));
401 dst += stride;
402 src += stride;
403 }
404 }
405
406 /* pixel functions - really are entry points to vc1_mspel_mc */
407
408 /* this one is defined in dsputil.c */
409 void ff_put_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd);
410
411 #define PUT_VC1_MSPEL(a, b)\
412 static void put_vc1_mspel_mc ## a ## b ##_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) { \
413 vc1_mspel_mc(dst, src, stride, a, b, rnd); \
414 }
415
416 PUT_VC1_MSPEL(1, 0)
417 PUT_VC1_MSPEL(2, 0)
418 PUT_VC1_MSPEL(3, 0)
419
420 PUT_VC1_MSPEL(0, 1)
421 PUT_VC1_MSPEL(1, 1)
422 PUT_VC1_MSPEL(2, 1)
423 PUT_VC1_MSPEL(3, 1)
424
425 PUT_VC1_MSPEL(0, 2)
426 PUT_VC1_MSPEL(1, 2)
427 PUT_VC1_MSPEL(2, 2)
428 PUT_VC1_MSPEL(3, 2)
429
430 PUT_VC1_MSPEL(0, 3)
431 PUT_VC1_MSPEL(1, 3)
432 PUT_VC1_MSPEL(2, 3)
433 PUT_VC1_MSPEL(3, 3)
434
435 void ff_vc1dsp_init(DSPContext* dsp, AVCodecContext *avctx) {
436 dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;
437 dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;
438 dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;
439 dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;
440 dsp->vc1_h_overlap = vc1_h_overlap_c;
441 dsp->vc1_v_overlap = vc1_v_overlap_c;
442
443 dsp->put_vc1_mspel_pixels_tab[ 0] = ff_put_vc1_mspel_mc00_c;
444 dsp->put_vc1_mspel_pixels_tab[ 1] = put_vc1_mspel_mc10_c;
445 dsp->put_vc1_mspel_pixels_tab[ 2] = put_vc1_mspel_mc20_c;
446 dsp->put_vc1_mspel_pixels_tab[ 3] = put_vc1_mspel_mc30_c;
447 dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_c;
448 dsp->put_vc1_mspel_pixels_tab[ 5] = put_vc1_mspel_mc11_c;
449 dsp->put_vc1_mspel_pixels_tab[ 6] = put_vc1_mspel_mc21_c;
450 dsp->put_vc1_mspel_pixels_tab[ 7] = put_vc1_mspel_mc31_c;
451 dsp->put_vc1_mspel_pixels_tab[ 8] = put_vc1_mspel_mc02_c;
452 dsp->put_vc1_mspel_pixels_tab[ 9] = put_vc1_mspel_mc12_c;
453 dsp->put_vc1_mspel_pixels_tab[10] = put_vc1_mspel_mc22_c;
454 dsp->put_vc1_mspel_pixels_tab[11] = put_vc1_mspel_mc32_c;
455 dsp->put_vc1_mspel_pixels_tab[12] = put_vc1_mspel_mc03_c;
456 dsp->put_vc1_mspel_pixels_tab[13] = put_vc1_mspel_mc13_c;
457 dsp->put_vc1_mspel_pixels_tab[14] = put_vc1_mspel_mc23_c;
458 dsp->put_vc1_mspel_pixels_tab[15] = put_vc1_mspel_mc33_c;
459 }
lucabe's unfinished and experimental patches for ffmpeg