2
* VC-1 and WMV3 decoder - DSP functions
3
* Copyright (c) 2006 Konstantin Shishkov
5
* This library is free software; you can redistribute it and/or
6
* modify it under the terms of the GNU Lesser General Public
7
* License as published by the Free Software Foundation; either
8
* version 2 of the License, or (at your option) any later version.
10
* This library is distributed in the hope that it will be useful,
11
* but WITHOUT ANY WARRANTY; without even the implied warranty of
12
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13
* Lesser General Public License for more details.
15
* You should have received a copy of the GNU Lesser General Public
16
* License along with this library; if not, write to the Free Software
17
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23
* VC-1 and WMV3 decoder
30
/** Apply overlap transform to vertical edge
32
static void vc1_v_overlap_c(uint8_t* src, int stride, int rnd)
36
for(i = 0; i < 8; i++) {
42
src[-2*stride] = clip_uint8((7*a + d + 4 - rnd) >> 3);
43
src[-stride] = clip_uint8((-a + 7*b + c + d + 3 + rnd) >> 3);
44
src[0] = clip_uint8((a + b + 7*c - d + 4 - rnd) >> 3);
45
src[stride] = clip_uint8((a + 7*d + 3 + rnd) >> 3);
50
/** Apply overlap transform to horizontal edge
52
static void vc1_h_overlap_c(uint8_t* src, int stride, int rnd)
56
for(i = 0; i < 8; i++) {
62
src[-2] = clip_uint8((7*a + d + 4 - rnd) >> 3);
63
src[-1] = clip_uint8((-a + 7*b + c + d + 3 + rnd) >> 3);
64
src[0] = clip_uint8((a + b + 7*c - d + 4 - rnd) >> 3);
65
src[1] = clip_uint8((a + 7*d + 3 + rnd) >> 3);
71
/** Do inverse transform on 8x8 block
73
static void vc1_inv_trans_8x8_c(DCTELEM block[64])
76
register int t1,t2,t3,t4,t5,t6,t7,t8;
81
for(i = 0; i < 8; i++){
82
t1 = 12 * (src[0] + src[4]);
83
t2 = 12 * (src[0] - src[4]);
84
t3 = 16 * src[2] + 6 * src[6];
85
t4 = 6 * src[2] - 16 * src[6];
92
t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
93
t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
94
t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
95
t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
97
dst[0] = (t5 + t1 + 4) >> 3;
98
dst[1] = (t6 + t2 + 4) >> 3;
99
dst[2] = (t7 + t3 + 4) >> 3;
100
dst[3] = (t8 + t4 + 4) >> 3;
101
dst[4] = (t8 - t4 + 4) >> 3;
102
dst[5] = (t7 - t3 + 4) >> 3;
103
dst[6] = (t6 - t2 + 4) >> 3;
104
dst[7] = (t5 - t1 + 4) >> 3;
112
for(i = 0; i < 8; i++){
113
t1 = 12 * (src[ 0] + src[32]);
114
t2 = 12 * (src[ 0] - src[32]);
115
t3 = 16 * src[16] + 6 * src[48];
116
t4 = 6 * src[16] - 16 * src[48];
123
t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
124
t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
125
t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
126
t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
128
dst[ 0] = (t5 + t1 + 64) >> 7;
129
dst[ 8] = (t6 + t2 + 64) >> 7;
130
dst[16] = (t7 + t3 + 64) >> 7;
131
dst[24] = (t8 + t4 + 64) >> 7;
132
dst[32] = (t8 - t4 + 64 + 1) >> 7;
133
dst[40] = (t7 - t3 + 64 + 1) >> 7;
134
dst[48] = (t6 - t2 + 64 + 1) >> 7;
135
dst[56] = (t5 - t1 + 64 + 1) >> 7;
142
/** Do inverse transform on 8x4 part of block
144
static void vc1_inv_trans_8x4_c(DCTELEM block[64], int n)
147
register int t1,t2,t3,t4,t5,t6,t7,t8;
154
for(i = 0; i < 4; i++){
155
t1 = 12 * (src[0] + src[4]);
156
t2 = 12 * (src[0] - src[4]);
157
t3 = 16 * src[2] + 6 * src[6];
158
t4 = 6 * src[2] - 16 * src[6];
165
t1 = 16 * src[1] + 15 * src[3] + 9 * src[5] + 4 * src[7];
166
t2 = 15 * src[1] - 4 * src[3] - 16 * src[5] - 9 * src[7];
167
t3 = 9 * src[1] - 16 * src[3] + 4 * src[5] + 15 * src[7];
168
t4 = 4 * src[1] - 9 * src[3] + 15 * src[5] - 16 * src[7];
170
dst[0] = (t5 + t1 + 4) >> 3;
171
dst[1] = (t6 + t2 + 4) >> 3;
172
dst[2] = (t7 + t3 + 4) >> 3;
173
dst[3] = (t8 + t4 + 4) >> 3;
174
dst[4] = (t8 - t4 + 4) >> 3;
175
dst[5] = (t7 - t3 + 4) >> 3;
176
dst[6] = (t6 - t2 + 4) >> 3;
177
dst[7] = (t5 - t1 + 4) >> 3;
185
for(i = 0; i < 8; i++){
186
t1 = 17 * (src[ 0] + src[16]);
187
t2 = 17 * (src[ 0] - src[16]);
193
dst[ 0] = (t1 + t3 + t6 + 64) >> 7;
194
dst[ 8] = (t2 - t4 + t5 + 64) >> 7;
195
dst[16] = (t2 + t4 - t5 + 64) >> 7;
196
dst[24] = (t1 - t3 - t6 + 64) >> 7;
203
/** Do inverse transform on 4x8 parts of block
205
static void vc1_inv_trans_4x8_c(DCTELEM block[64], int n)
208
register int t1,t2,t3,t4,t5,t6,t7,t8;
215
for(i = 0; i < 8; i++){
216
t1 = 17 * (src[0] + src[2]);
217
t2 = 17 * (src[0] - src[2]);
223
dst[0] = (t1 + t3 + t6 + 4) >> 3;
224
dst[1] = (t2 - t4 + t5 + 4) >> 3;
225
dst[2] = (t2 + t4 - t5 + 4) >> 3;
226
dst[3] = (t1 - t3 - t6 + 4) >> 3;
234
for(i = 0; i < 4; i++){
235
t1 = 12 * (src[ 0] + src[32]);
236
t2 = 12 * (src[ 0] - src[32]);
237
t3 = 16 * src[16] + 6 * src[48];
238
t4 = 6 * src[16] - 16 * src[48];
245
t1 = 16 * src[ 8] + 15 * src[24] + 9 * src[40] + 4 * src[56];
246
t2 = 15 * src[ 8] - 4 * src[24] - 16 * src[40] - 9 * src[56];
247
t3 = 9 * src[ 8] - 16 * src[24] + 4 * src[40] + 15 * src[56];
248
t4 = 4 * src[ 8] - 9 * src[24] + 15 * src[40] - 16 * src[56];
250
dst[ 0] = (t5 + t1 + 64) >> 7;
251
dst[ 8] = (t6 + t2 + 64) >> 7;
252
dst[16] = (t7 + t3 + 64) >> 7;
253
dst[24] = (t8 + t4 + 64) >> 7;
254
dst[32] = (t8 - t4 + 64 + 1) >> 7;
255
dst[40] = (t7 - t3 + 64 + 1) >> 7;
256
dst[48] = (t6 - t2 + 64 + 1) >> 7;
257
dst[56] = (t5 - t1 + 64 + 1) >> 7;
264
/** Do inverse transform on 4x4 part of block
266
static void vc1_inv_trans_4x4_c(DCTELEM block[64], int n)
269
register int t1,t2,t3,t4,t5,t6;
273
off = (n&1) * 4 + (n&2) * 16;
276
for(i = 0; i < 4; i++){
277
t1 = 17 * (src[0] + src[2]);
278
t2 = 17 * (src[0] - src[2]);
284
dst[0] = (t1 + t3 + t6 + 4) >> 3;
285
dst[1] = (t2 - t4 + t5 + 4) >> 3;
286
dst[2] = (t2 + t4 - t5 + 4) >> 3;
287
dst[3] = (t1 - t3 - t6 + 4) >> 3;
295
for(i = 0; i < 4; i++){
296
t1 = 17 * (src[ 0] + src[16]);
297
t2 = 17 * (src[ 0] - src[16]);
303
dst[ 0] = (t1 + t3 + t6 + 64) >> 7;
304
dst[ 8] = (t2 - t4 + t5 + 64) >> 7;
305
dst[16] = (t2 + t4 - t5 + 64) >> 7;
306
dst[24] = (t1 - t3 - t6 + 64) >> 7;
313
/* motion compensation functions */
315
/** Filter used to interpolate fractional pel values
317
static always_inline int vc1_mspel_filter(const uint8_t *src, int stride, int mode, int r)
323
return (-4*src[-stride] + 53*src[0] + 18*src[stride] - 3*src[stride*2] + 32 - r) >> 6;
325
return (-src[-stride] + 9*src[0] + 9*src[stride] - src[stride*2] + 8 - r) >> 4;
327
return (-3*src[-stride] + 18*src[0] + 53*src[stride] - 4*src[stride*2] + 32 - r) >> 6;
329
return 0; //should not occur
332
/** Function used to do motion compensation with bicubic interpolation
334
static void vc1_mspel_mc(uint8_t *dst, const uint8_t *src, int stride, int mode, int rnd)
337
uint8_t tmp[8*11], *tptr;
344
for(j = 0; j < 11; j++) {
345
for(i = 0; i < 8; i++)
346
tptr[i] = clip_uint8(vc1_mspel_filter(src + i, 1, m, r));
354
for(j = 0; j < 8; j++) {
355
for(i = 0; i < 8; i++)
356
dst[i] = clip_uint8(vc1_mspel_filter(tptr + i, 8, m, r));
362
/* pixel functions - really are entry points to vc1_mspel_mc */
364
/* this one is defined in dsputil.c */
365
void ff_put_vc1_mspel_mc00_c(uint8_t *dst, const uint8_t *src, int stride, int rnd);
367
static void ff_put_vc1_mspel_mc10_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
368
vc1_mspel_mc(dst, src, stride, 0x1, rnd);
371
static void ff_put_vc1_mspel_mc20_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
372
vc1_mspel_mc(dst, src, stride, 0x2, rnd);
375
static void ff_put_vc1_mspel_mc30_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
376
vc1_mspel_mc(dst, src, stride, 0x3, rnd);
379
static void ff_put_vc1_mspel_mc01_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
380
vc1_mspel_mc(dst, src, stride, 0x4, rnd);
383
static void ff_put_vc1_mspel_mc11_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
384
vc1_mspel_mc(dst, src, stride, 0x5, rnd);
387
static void ff_put_vc1_mspel_mc21_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
388
vc1_mspel_mc(dst, src, stride, 0x6, rnd);
391
static void ff_put_vc1_mspel_mc31_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
392
vc1_mspel_mc(dst, src, stride, 0x7, rnd);
395
static void ff_put_vc1_mspel_mc02_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
396
vc1_mspel_mc(dst, src, stride, 0x8, rnd);
399
static void ff_put_vc1_mspel_mc12_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
400
vc1_mspel_mc(dst, src, stride, 0x9, rnd);
403
static void ff_put_vc1_mspel_mc22_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
404
vc1_mspel_mc(dst, src, stride, 0xA, rnd);
407
static void ff_put_vc1_mspel_mc32_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
408
vc1_mspel_mc(dst, src, stride, 0xB, rnd);
411
static void ff_put_vc1_mspel_mc03_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
412
vc1_mspel_mc(dst, src, stride, 0xC, rnd);
415
static void ff_put_vc1_mspel_mc13_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
416
vc1_mspel_mc(dst, src, stride, 0xD, rnd);
419
static void ff_put_vc1_mspel_mc23_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
420
vc1_mspel_mc(dst, src, stride, 0xE, rnd);
423
static void ff_put_vc1_mspel_mc33_c(uint8_t *dst, const uint8_t *src, int stride, int rnd) {
424
vc1_mspel_mc(dst, src, stride, 0xF, rnd);
427
void ff_vc1dsp_init(DSPContext* dsp, AVCodecContext *avctx) {
428
dsp->vc1_inv_trans_8x8 = vc1_inv_trans_8x8_c;
429
dsp->vc1_inv_trans_4x8 = vc1_inv_trans_4x8_c;
430
dsp->vc1_inv_trans_8x4 = vc1_inv_trans_8x4_c;
431
dsp->vc1_inv_trans_4x4 = vc1_inv_trans_4x4_c;
432
dsp->vc1_h_overlap = vc1_h_overlap_c;
433
dsp->vc1_v_overlap = vc1_v_overlap_c;
435
dsp->put_vc1_mspel_pixels_tab[ 0] = ff_put_vc1_mspel_mc00_c;
436
dsp->put_vc1_mspel_pixels_tab[ 1] = ff_put_vc1_mspel_mc10_c;
437
dsp->put_vc1_mspel_pixels_tab[ 2] = ff_put_vc1_mspel_mc20_c;
438
dsp->put_vc1_mspel_pixels_tab[ 3] = ff_put_vc1_mspel_mc30_c;
439
dsp->put_vc1_mspel_pixels_tab[ 4] = ff_put_vc1_mspel_mc01_c;
440
dsp->put_vc1_mspel_pixels_tab[ 5] = ff_put_vc1_mspel_mc11_c;
441
dsp->put_vc1_mspel_pixels_tab[ 6] = ff_put_vc1_mspel_mc21_c;
442
dsp->put_vc1_mspel_pixels_tab[ 7] = ff_put_vc1_mspel_mc31_c;
443
dsp->put_vc1_mspel_pixels_tab[ 8] = ff_put_vc1_mspel_mc02_c;
444
dsp->put_vc1_mspel_pixels_tab[ 9] = ff_put_vc1_mspel_mc12_c;
445
dsp->put_vc1_mspel_pixels_tab[10] = ff_put_vc1_mspel_mc22_c;
446
dsp->put_vc1_mspel_pixels_tab[11] = ff_put_vc1_mspel_mc32_c;
447
dsp->put_vc1_mspel_pixels_tab[12] = ff_put_vc1_mspel_mc03_c;
448
dsp->put_vc1_mspel_pixels_tab[13] = ff_put_vc1_mspel_mc13_c;
449
dsp->put_vc1_mspel_pixels_tab[14] = ff_put_vc1_mspel_mc23_c;
450
dsp->put_vc1_mspel_pixels_tab[15] = ff_put_vc1_mspel_mc33_c;