FFmpeg
ivi_dsp.c
Go to the documentation of this file.
1 /*
2  * DSP functions for Indeo Video Interactive codecs (Indeo4 and Indeo5)
3  *
4  * Copyright (c) 2009-2011 Maxim Poliakovski
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * DSP functions (inverse transforms, motion compensation, wavelet recompositions)
26  * for Indeo Video Interactive codecs.
27  */
28 
29 #include <string.h>
30 #include "libavutil/common.h"
31 #include "ivi.h"
32 #include "ivi_dsp.h"
33 
34 void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst,
35  const ptrdiff_t dst_pitch)
36 {
37  int x, y, indx;
38  int32_t p0, p1, p2, p3, tmp0, tmp1, tmp2;
39  int32_t b0_1, b0_2, b1_1, b1_2, b1_3, b2_1, b2_2, b2_3, b2_4, b2_5, b2_6;
40  int32_t b3_1, b3_2, b3_3, b3_4, b3_5, b3_6, b3_7, b3_8, b3_9;
41  ptrdiff_t pitch, back_pitch;
42  const short *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr;
43  const int num_bands = 4;
44 
45  /* all bands should have the same pitch */
46  pitch = plane->bands[0].pitch;
47 
48  /* pixels at the position "y-1" will be set to pixels at the "y" for the 1st iteration */
49  back_pitch = 0;
50 
51  /* get pointers to the wavelet bands */
52  b0_ptr = plane->bands[0].buf;
53  b1_ptr = plane->bands[1].buf;
54  b2_ptr = plane->bands[2].buf;
55  b3_ptr = plane->bands[3].buf;
56 
57  for (y = 0; y < plane->height; y += 2) {
58 
59  if (y+2 >= plane->height)
60  pitch= 0;
61  /* load storage variables with values */
62  if (num_bands > 0) {
63  b0_1 = b0_ptr[0];
64  b0_2 = b0_ptr[pitch];
65  }
66 
67  if (num_bands > 1) {
68  b1_1 = b1_ptr[back_pitch];
69  b1_2 = b1_ptr[0];
70  b1_3 = b1_1 - b1_2*6 + b1_ptr[pitch];
71  }
72 
73  if (num_bands > 2) {
74  b2_2 = b2_ptr[0]; // b2[x, y ]
75  b2_3 = b2_2; // b2[x+1,y ] = b2[x,y]
76  b2_5 = b2_ptr[pitch]; // b2[x ,y+1]
77  b2_6 = b2_5; // b2[x+1,y+1] = b2[x,y+1]
78  }
79 
80  if (num_bands > 3) {
81  b3_2 = b3_ptr[back_pitch]; // b3[x ,y-1]
82  b3_3 = b3_2; // b3[x+1,y-1] = b3[x ,y-1]
83  b3_5 = b3_ptr[0]; // b3[x ,y ]
84  b3_6 = b3_5; // b3[x+1,y ] = b3[x ,y ]
85  b3_8 = b3_2 - b3_5*6 + b3_ptr[pitch];
86  b3_9 = b3_8;
87  }
88 
89  for (x = 0, indx = 0; x < plane->width; x+=2, indx++) {
90  if (x+2 >= plane->width) {
91  b0_ptr --;
92  b1_ptr --;
93  b2_ptr --;
94  b3_ptr --;
95  }
96 
97  /* some values calculated in the previous iterations can */
98  /* be reused in the next ones, so do appropriate copying */
99  b2_1 = b2_2; // b2[x-1,y ] = b2[x, y ]
100  b2_2 = b2_3; // b2[x ,y ] = b2[x+1,y ]
101  b2_4 = b2_5; // b2[x-1,y+1] = b2[x ,y+1]
102  b2_5 = b2_6; // b2[x ,y+1] = b2[x+1,y+1]
103  b3_1 = b3_2; // b3[x-1,y-1] = b3[x ,y-1]
104  b3_2 = b3_3; // b3[x ,y-1] = b3[x+1,y-1]
105  b3_4 = b3_5; // b3[x-1,y ] = b3[x ,y ]
106  b3_5 = b3_6; // b3[x ,y ] = b3[x+1,y ]
107  b3_7 = b3_8; // vert_HPF(x-1)
108  b3_8 = b3_9; // vert_HPF(x )
109 
110  p0 = p1 = p2 = p3 = 0;
111 
112  /* process the LL-band by applying LPF both vertically and horizontally */
113  if (num_bands > 0) {
114  tmp0 = b0_1;
115  tmp2 = b0_2;
116  b0_1 = b0_ptr[indx+1];
117  b0_2 = b0_ptr[pitch+indx+1];
118  tmp1 = tmp0 + b0_1;
119 
120  p0 = tmp0 * 16;
121  p1 = tmp1 * 8;
122  p2 = (tmp0 + tmp2) * 8;
123  p3 = (tmp1 + tmp2 + b0_2) * 4;
124  }
125 
126  /* process the HL-band by applying HPF vertically and LPF horizontally */
127  if (num_bands > 1) {
128  tmp0 = b1_2;
129  tmp1 = b1_1;
130  b1_2 = b1_ptr[indx+1];
131  b1_1 = b1_ptr[back_pitch+indx+1];
132 
133  tmp2 = tmp1 - tmp0*6 + b1_3;
134  b1_3 = b1_1 - b1_2*6 + b1_ptr[pitch+indx+1];
135 
136  p0 += (tmp0 + tmp1) * 8;
137  p1 += (tmp0 + tmp1 + b1_1 + b1_2) * 4;
138  p2 += tmp2 * 4;
139  p3 += (tmp2 + b1_3) * 2;
140  }
141 
142  /* process the LH-band by applying LPF vertically and HPF horizontally */
143  if (num_bands > 2) {
144  b2_3 = b2_ptr[indx+1];
145  b2_6 = b2_ptr[pitch+indx+1];
146 
147  tmp0 = b2_1 + b2_2;
148  tmp1 = b2_1 - b2_2*6 + b2_3;
149 
150  p0 += tmp0 * 8;
151  p1 += tmp1 * 4;
152  p2 += (tmp0 + b2_4 + b2_5) * 4;
153  p3 += (tmp1 + b2_4 - b2_5*6 + b2_6) * 2;
154  }
155 
156  /* process the HH-band by applying HPF both vertically and horizontally */
157  if (num_bands > 3) {
158  b3_6 = b3_ptr[indx+1]; // b3[x+1,y ]
159  b3_3 = b3_ptr[back_pitch+indx+1]; // b3[x+1,y-1]
160 
161  tmp0 = b3_1 + b3_4;
162  tmp1 = b3_2 + b3_5;
163  tmp2 = b3_3 + b3_6;
164 
165  b3_9 = b3_3 - b3_6*6 + b3_ptr[pitch+indx+1];
166 
167  p0 += (tmp0 + tmp1) * 4;
168  p1 += (tmp0 - tmp1*6 + tmp2) * 2;
169  p2 += (b3_7 + b3_8) * 2;
170  p3 += b3_7 - b3_8*6 + b3_9;
171  }
172 
173  /* output four pixels */
174  dst[x] = av_clip_uint8((p0 >> 6) + 128);
175  dst[x+1] = av_clip_uint8((p1 >> 6) + 128);
176  dst[dst_pitch+x] = av_clip_uint8((p2 >> 6) + 128);
177  dst[dst_pitch+x+1] = av_clip_uint8((p3 >> 6) + 128);
178  }// for x
179 
180  dst += dst_pitch << 1;
181 
182  back_pitch = -pitch;
183 
184  b0_ptr += pitch + 1;
185  b1_ptr += pitch + 1;
186  b2_ptr += pitch + 1;
187  b3_ptr += pitch + 1;
188  }
189 }
190 
191 void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst,
192  const ptrdiff_t dst_pitch)
193 {
194  int x, y, indx, b0, b1, b2, b3, p0, p1, p2, p3;
195  const short *b0_ptr, *b1_ptr, *b2_ptr, *b3_ptr;
196  ptrdiff_t pitch;
197 
198  /* all bands should have the same pitch */
199  pitch = plane->bands[0].pitch;
200 
201  /* get pointers to the wavelet bands */
202  b0_ptr = plane->bands[0].buf;
203  b1_ptr = plane->bands[1].buf;
204  b2_ptr = plane->bands[2].buf;
205  b3_ptr = plane->bands[3].buf;
206 
207  for (y = 0; y < plane->height; y += 2) {
208  for (x = 0, indx = 0; x < plane->width; x += 2, indx++) {
209  /* load coefficients */
210  b0 = b0_ptr[indx]; //should be: b0 = (num_bands > 0) ? b0_ptr[indx] : 0;
211  b1 = b1_ptr[indx]; //should be: b1 = (num_bands > 1) ? b1_ptr[indx] : 0;
212  b2 = b2_ptr[indx]; //should be: b2 = (num_bands > 2) ? b2_ptr[indx] : 0;
213  b3 = b3_ptr[indx]; //should be: b3 = (num_bands > 3) ? b3_ptr[indx] : 0;
214 
215  /* haar wavelet recomposition */
216  p0 = (b0 + b1 + b2 + b3 + 2) >> 2;
217  p1 = (b0 + b1 - b2 - b3 + 2) >> 2;
218  p2 = (b0 - b1 + b2 - b3 + 2) >> 2;
219  p3 = (b0 - b1 - b2 + b3 + 2) >> 2;
220 
221  /* bias, convert and output four pixels */
222  dst[x] = av_clip_uint8(p0 + 128);
223  dst[x + 1] = av_clip_uint8(p1 + 128);
224  dst[dst_pitch + x] = av_clip_uint8(p2 + 128);
225  dst[dst_pitch + x + 1] = av_clip_uint8(p3 + 128);
226  }// for x
227 
228  dst += dst_pitch << 1;
229 
230  b0_ptr += pitch;
231  b1_ptr += pitch;
232  b2_ptr += pitch;
233  b3_ptr += pitch;
234  }// for y
235 }
236 
237 /** butterfly operation for the inverse Haar transform */
238 #define IVI_HAAR_BFLY(s1, s2, o1, o2, t) \
239  t = ((s1) - (s2)) >> 1;\
240  o1 = ((s1) + (s2)) >> 1;\
241  o2 = (t);\
242 
243 /** inverse 8-point Haar transform */
244 #define INV_HAAR8(s1, s5, s3, s7, s2, s4, s6, s8,\
245  d1, d2, d3, d4, d5, d6, d7, d8,\
246  t0, t1, t2, t3, t4, t5, t6, t7, t8) {\
247  t1 = (s1) * 2; t5 = (s5) * 2;\
248  IVI_HAAR_BFLY(t1, t5, t1, t5, t0); IVI_HAAR_BFLY(t1, s3, t1, t3, t0);\
249  IVI_HAAR_BFLY(t5, s7, t5, t7, t0); IVI_HAAR_BFLY(t1, s2, t1, t2, t0);\
250  IVI_HAAR_BFLY(t3, s4, t3, t4, t0); IVI_HAAR_BFLY(t5, s6, t5, t6, t0);\
251  IVI_HAAR_BFLY(t7, s8, t7, t8, t0);\
252  d1 = COMPENSATE(t1);\
253  d2 = COMPENSATE(t2);\
254  d3 = COMPENSATE(t3);\
255  d4 = COMPENSATE(t4);\
256  d5 = COMPENSATE(t5);\
257  d6 = COMPENSATE(t6);\
258  d7 = COMPENSATE(t7);\
259  d8 = COMPENSATE(t8); }
260 
261 /** inverse 4-point Haar transform */
262 #define INV_HAAR4(s1, s3, s5, s7, d1, d2, d3, d4, t0, t1, t2, t3, t4) {\
263  IVI_HAAR_BFLY(s1, s3, t0, t1, t4);\
264  IVI_HAAR_BFLY(t0, s5, t2, t3, t4);\
265  d1 = COMPENSATE(t2);\
266  d2 = COMPENSATE(t3);\
267  IVI_HAAR_BFLY(t1, s7, t2, t3, t4);\
268  d3 = COMPENSATE(t2);\
269  d4 = COMPENSATE(t3); }
270 
271 void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch,
272  const uint8_t *flags)
273 {
274  int i, shift, sp1, sp2, sp3, sp4;
275  const int32_t *src;
276  int32_t *dst;
277  int tmp[64];
278  int t0, t1, t2, t3, t4, t5, t6, t7, t8;
279 
280  /* apply the InvHaar8 to all columns */
281 #define COMPENSATE(x) (x)
282  src = in;
283  dst = tmp;
284  for (i = 0; i < 8; i++) {
285  if (flags[i]) {
286  /* pre-scaling */
287  shift = !(i & 4);
288  sp1 = src[ 0] * (1 << shift);
289  sp2 = src[ 8] * (1 << shift);
290  sp3 = src[16] * (1 << shift);
291  sp4 = src[24] * (1 << shift);
292  INV_HAAR8( sp1, sp2, sp3, sp4,
293  src[32], src[40], src[48], src[56],
294  dst[ 0], dst[ 8], dst[16], dst[24],
295  dst[32], dst[40], dst[48], dst[56],
296  t0, t1, t2, t3, t4, t5, t6, t7, t8);
297  } else
298  dst[ 0] = dst[ 8] = dst[16] = dst[24] =
299  dst[32] = dst[40] = dst[48] = dst[56] = 0;
300 
301  src++;
302  dst++;
303  }
304 #undef COMPENSATE
305 
306  /* apply the InvHaar8 to all rows */
307 #define COMPENSATE(x) (x)
308  src = tmp;
309  for (i = 0; i < 8; i++) {
310  if ( !src[0] && !src[1] && !src[2] && !src[3]
311  && !src[4] && !src[5] && !src[6] && !src[7]) {
312  memset(out, 0, 8 * sizeof(out[0]));
313  } else {
314  INV_HAAR8(src[0], src[1], src[2], src[3],
315  src[4], src[5], src[6], src[7],
316  out[0], out[1], out[2], out[3],
317  out[4], out[5], out[6], out[7],
318  t0, t1, t2, t3, t4, t5, t6, t7, t8);
319  }
320  src += 8;
321  out += pitch;
322  }
323 #undef COMPENSATE
324 }
325 
326 void ff_ivi_row_haar8(const int32_t *in, int16_t *out, ptrdiff_t pitch,
327  const uint8_t *flags)
328 {
329  int i;
330  int t0, t1, t2, t3, t4, t5, t6, t7, t8;
331 
332  /* apply the InvHaar8 to all rows */
333 #define COMPENSATE(x) (x)
334  for (i = 0; i < 8; i++) {
335  if ( !in[0] && !in[1] && !in[2] && !in[3]
336  && !in[4] && !in[5] && !in[6] && !in[7]) {
337  memset(out, 0, 8 * sizeof(out[0]));
338  } else {
339  INV_HAAR8(in[0], in[1], in[2], in[3],
340  in[4], in[5], in[6], in[7],
341  out[0], out[1], out[2], out[3],
342  out[4], out[5], out[6], out[7],
343  t0, t1, t2, t3, t4, t5, t6, t7, t8);
344  }
345  in += 8;
346  out += pitch;
347  }
348 #undef COMPENSATE
349 }
350 
351 void ff_ivi_col_haar8(const int32_t *in, int16_t *out, ptrdiff_t pitch,
352  const uint8_t *flags)
353 {
354  int i;
355  int t0, t1, t2, t3, t4, t5, t6, t7, t8;
356 
357  /* apply the InvHaar8 to all columns */
358 #define COMPENSATE(x) (x)
359  for (i = 0; i < 8; i++) {
360  if (flags[i]) {
361  INV_HAAR8(in[ 0], in[ 8], in[16], in[24],
362  in[32], in[40], in[48], in[56],
363  out[0 * pitch], out[1 * pitch],
364  out[2 * pitch], out[3 * pitch],
365  out[4 * pitch], out[5 * pitch],
366  out[6 * pitch], out[7 * pitch],
367  t0, t1, t2, t3, t4, t5, t6, t7, t8);
368  } else
369  out[0 * pitch] = out[1 * pitch] =
370  out[2 * pitch] = out[3 * pitch] =
371  out[4 * pitch] = out[5 * pitch] =
372  out[6 * pitch] = out[7 * pitch] = 0;
373 
374  in++;
375  out++;
376  }
377 #undef COMPENSATE
378 }
379 
380 void ff_ivi_inverse_haar_4x4(const int32_t *in, int16_t *out, ptrdiff_t pitch,
381  const uint8_t *flags)
382 {
383  int i, shift, sp1, sp2;
384  const int32_t *src;
385  int32_t *dst;
386  int tmp[16];
387  int t0, t1, t2, t3, t4;
388 
389  /* apply the InvHaar4 to all columns */
390 #define COMPENSATE(x) (x)
391  src = in;
392  dst = tmp;
393  for (i = 0; i < 4; i++) {
394  if (flags[i]) {
395  /* pre-scaling */
396  shift = !(i & 2);
397  sp1 = src[0] * (1 << shift);
398  sp2 = src[4] * (1 << shift);
399  INV_HAAR4( sp1, sp2, src[8], src[12],
400  dst[0], dst[4], dst[8], dst[12],
401  t0, t1, t2, t3, t4);
402  } else
403  dst[0] = dst[4] = dst[8] = dst[12] = 0;
404 
405  src++;
406  dst++;
407  }
408 #undef COMPENSATE
409 
410  /* apply the InvHaar8 to all rows */
411 #define COMPENSATE(x) (x)
412  src = tmp;
413  for (i = 0; i < 4; i++) {
414  if (!src[0] && !src[1] && !src[2] && !src[3]) {
415  memset(out, 0, 4 * sizeof(out[0]));
416  } else {
417  INV_HAAR4(src[0], src[1], src[2], src[3],
418  out[0], out[1], out[2], out[3],
419  t0, t1, t2, t3, t4);
420  }
421  src += 4;
422  out += pitch;
423  }
424 #undef COMPENSATE
425 }
426 
427 void ff_ivi_row_haar4(const int32_t *in, int16_t *out, ptrdiff_t pitch,
428  const uint8_t *flags)
429 {
430  int i;
431  int t0, t1, t2, t3, t4;
432 
433  /* apply the InvHaar4 to all rows */
434 #define COMPENSATE(x) (x)
435  for (i = 0; i < 4; i++) {
436  if (!in[0] && !in[1] && !in[2] && !in[3]) {
437  memset(out, 0, 4 * sizeof(out[0]));
438  } else {
439  INV_HAAR4(in[0], in[1], in[2], in[3],
440  out[0], out[1], out[2], out[3],
441  t0, t1, t2, t3, t4);
442  }
443  in += 4;
444  out += pitch;
445  }
446 #undef COMPENSATE
447 }
448 
449 void ff_ivi_col_haar4(const int32_t *in, int16_t *out, ptrdiff_t pitch,
450  const uint8_t *flags)
451 {
452  int i;
453  int t0, t1, t2, t3, t4;
454 
455  /* apply the InvHaar8 to all columns */
456 #define COMPENSATE(x) (x)
457  for (i = 0; i < 4; i++) {
458  if (flags[i]) {
459  INV_HAAR4(in[0], in[4], in[8], in[12],
460  out[0 * pitch], out[1 * pitch],
461  out[2 * pitch], out[3 * pitch],
462  t0, t1, t2, t3, t4);
463  } else
464  out[0 * pitch] = out[1 * pitch] =
465  out[2 * pitch] = out[3 * pitch] = 0;
466 
467  in++;
468  out++;
469  }
470 #undef COMPENSATE
471 }
472 
473 void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, ptrdiff_t pitch,
474  int blk_size)
475 {
476  int x, y;
477  int16_t dc_coeff;
478 
479  dc_coeff = (*in + 0) >> 3;
480 
481  for (y = 0; y < blk_size; out += pitch, y++) {
482  for (x = 0; x < blk_size; x++)
483  out[x] = dc_coeff;
484  }
485 }
486 
487 /** butterfly operation for the inverse slant transform */
488 #define IVI_SLANT_BFLY(s1, s2, o1, o2, t) \
489  t = (s1) - (s2);\
490  o1 = (s1) + (s2);\
491  o2 = (t);\
492 
493 /** This is a reflection a,b = 1/2, 5/4 for the inverse slant transform */
494 #define IVI_IREFLECT(s1, s2, o1, o2, t) \
495  t = (((s1) + (s2)*2 + 2) >> 2) + (s1);\
496  o2 = (((s1)*2 - (s2) + 2) >> 2) - (s2);\
497  o1 = (t);\
498 
499 /** This is a reflection a,b = 1/2, 7/8 for the inverse slant transform */
500 #define IVI_SLANT_PART4(s1, s2, o1, o2, t) \
501  t = (s2) + (((s1)*4 - (s2) + 4) >> 3);\
502  o2 = (s1) + ((-(s1) - (s2)*4 + 4) >> 3);\
503  o1 = (t);\
504 
505 /** inverse slant8 transform */
506 #define IVI_INV_SLANT8(s1, s4, s8, s5, s2, s6, s3, s7,\
507  d1, d2, d3, d4, d5, d6, d7, d8,\
508  t0, t1, t2, t3, t4, t5, t6, t7, t8) {\
509  IVI_SLANT_PART4(s4, s5, t4, t5, t0);\
510 \
511  IVI_SLANT_BFLY(s1, t5, t1, t5, t0); IVI_SLANT_BFLY(s2, s6, t2, t6, t0);\
512  IVI_SLANT_BFLY(s7, s3, t7, t3, t0); IVI_SLANT_BFLY(t4, s8, t4, t8, t0);\
513 \
514  IVI_SLANT_BFLY(t1, t2, t1, t2, t0); IVI_IREFLECT (t4, t3, t4, t3, t0);\
515  IVI_SLANT_BFLY(t5, t6, t5, t6, t0); IVI_IREFLECT (t8, t7, t8, t7, t0);\
516  IVI_SLANT_BFLY(t1, t4, t1, t4, t0); IVI_SLANT_BFLY(t2, t3, t2, t3, t0);\
517  IVI_SLANT_BFLY(t5, t8, t5, t8, t0); IVI_SLANT_BFLY(t6, t7, t6, t7, t0);\
518  d1 = COMPENSATE(t1);\
519  d2 = COMPENSATE(t2);\
520  d3 = COMPENSATE(t3);\
521  d4 = COMPENSATE(t4);\
522  d5 = COMPENSATE(t5);\
523  d6 = COMPENSATE(t6);\
524  d7 = COMPENSATE(t7);\
525  d8 = COMPENSATE(t8);}
526 
527 /** inverse slant4 transform */
528 #define IVI_INV_SLANT4(s1, s4, s2, s3, d1, d2, d3, d4, t0, t1, t2, t3, t4) {\
529  IVI_SLANT_BFLY(s1, s2, t1, t2, t0); IVI_IREFLECT (s4, s3, t4, t3, t0);\
530 \
531  IVI_SLANT_BFLY(t1, t4, t1, t4, t0); IVI_SLANT_BFLY(t2, t3, t2, t3, t0);\
532  d1 = COMPENSATE(t1);\
533  d2 = COMPENSATE(t2);\
534  d3 = COMPENSATE(t3);\
535  d4 = COMPENSATE(t4);}
536 
537 void ff_ivi_inverse_slant_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
538 {
539  int i;
540  const int32_t *src;
541  int32_t *dst;
542  int tmp[64];
543  int t0, t1, t2, t3, t4, t5, t6, t7, t8;
544 
545 #define COMPENSATE(x) (x)
546  src = in;
547  dst = tmp;
548  for (i = 0; i < 8; i++) {
549  if (flags[i]) {
550  IVI_INV_SLANT8(src[0], src[8], src[16], src[24], src[32], src[40], src[48], src[56],
551  dst[0], dst[8], dst[16], dst[24], dst[32], dst[40], dst[48], dst[56],
552  t0, t1, t2, t3, t4, t5, t6, t7, t8);
553  } else
554  dst[0] = dst[8] = dst[16] = dst[24] = dst[32] = dst[40] = dst[48] = dst[56] = 0;
555 
556  src++;
557  dst++;
558  }
559 #undef COMPENSATE
560 
561 #define COMPENSATE(x) (((x) + 1)>>1)
562  src = tmp;
563  for (i = 0; i < 8; i++) {
564  if (!src[0] && !src[1] && !src[2] && !src[3] && !src[4] && !src[5] && !src[6] && !src[7]) {
565  memset(out, 0, 8*sizeof(out[0]));
566  } else {
567  IVI_INV_SLANT8(src[0], src[1], src[2], src[3], src[4], src[5], src[6], src[7],
568  out[0], out[1], out[2], out[3], out[4], out[5], out[6], out[7],
569  t0, t1, t2, t3, t4, t5, t6, t7, t8);
570  }
571  src += 8;
572  out += pitch;
573  }
574 #undef COMPENSATE
575 }
576 
577 void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
578 {
579  int i;
580  const int32_t *src;
581  int32_t *dst;
582  int tmp[16];
583  int t0, t1, t2, t3, t4;
584 
585 #define COMPENSATE(x) (x)
586  src = in;
587  dst = tmp;
588  for (i = 0; i < 4; i++) {
589  if (flags[i]) {
590  IVI_INV_SLANT4(src[0], src[4], src[8], src[12],
591  dst[0], dst[4], dst[8], dst[12],
592  t0, t1, t2, t3, t4);
593  } else
594  dst[0] = dst[4] = dst[8] = dst[12] = 0;
595 
596  src++;
597  dst++;
598  }
599 #undef COMPENSATE
600 
601 #define COMPENSATE(x) (((x) + 1)>>1)
602  src = tmp;
603  for (i = 0; i < 4; i++) {
604  if (!src[0] && !src[1] && !src[2] && !src[3]) {
605  out[0] = out[1] = out[2] = out[3] = 0;
606  } else {
607  IVI_INV_SLANT4(src[0], src[1], src[2], src[3],
608  out[0], out[1], out[2], out[3],
609  t0, t1, t2, t3, t4);
610  }
611  src += 4;
612  out += pitch;
613  }
614 #undef COMPENSATE
615 }
616 
617 void ff_ivi_dc_slant_2d(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
618 {
619  int x, y;
620  int16_t dc_coeff;
621 
622  dc_coeff = (*in + 1) >> 1;
623 
624  for (y = 0; y < blk_size; out += pitch, y++) {
625  for (x = 0; x < blk_size; x++)
626  out[x] = dc_coeff;
627  }
628 }
629 
630 void ff_ivi_row_slant8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
631 {
632  int i;
633  int t0, t1, t2, t3, t4, t5, t6, t7, t8;
634 
635 #define COMPENSATE(x) (((x) + 1)>>1)
636  for (i = 0; i < 8; i++) {
637  if (!in[0] && !in[1] && !in[2] && !in[3] && !in[4] && !in[5] && !in[6] && !in[7]) {
638  memset(out, 0, 8*sizeof(out[0]));
639  } else {
640  IVI_INV_SLANT8( in[0], in[1], in[2], in[3], in[4], in[5], in[6], in[7],
641  out[0], out[1], out[2], out[3], out[4], out[5], out[6], out[7],
642  t0, t1, t2, t3, t4, t5, t6, t7, t8);
643  }
644  in += 8;
645  out += pitch;
646  }
647 #undef COMPENSATE
648 }
649 
650 void ff_ivi_dc_row_slant(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
651 {
652  int x, y;
653  int16_t dc_coeff;
654 
655  dc_coeff = (*in + 1) >> 1;
656 
657  for (x = 0; x < blk_size; x++)
658  out[x] = dc_coeff;
659 
660  out += pitch;
661 
662  for (y = 1; y < blk_size; out += pitch, y++) {
663  for (x = 0; x < blk_size; x++)
664  out[x] = 0;
665  }
666 }
667 
668 void ff_ivi_col_slant8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
669 {
670  int i, row2, row4, row8;
671  int t0, t1, t2, t3, t4, t5, t6, t7, t8;
672 
673  row2 = pitch << 1;
674  row4 = pitch << 2;
675  row8 = pitch << 3;
676 
677 #define COMPENSATE(x) (((x) + 1)>>1)
678  for (i = 0; i < 8; i++) {
679  if (flags[i]) {
680  IVI_INV_SLANT8(in[0], in[8], in[16], in[24], in[32], in[40], in[48], in[56],
681  out[0], out[pitch], out[row2], out[row2 + pitch], out[row4],
682  out[row4 + pitch], out[row4 + row2], out[row8 - pitch],
683  t0, t1, t2, t3, t4, t5, t6, t7, t8);
684  } else {
685  out[0] = out[pitch] = out[row2] = out[row2 + pitch] = out[row4] =
686  out[row4 + pitch] = out[row4 + row2] = out[row8 - pitch] = 0;
687  }
688 
689  in++;
690  out++;
691  }
692 #undef COMPENSATE
693 }
694 
695 void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
696 {
697  int x, y;
698  int16_t dc_coeff;
699 
700  dc_coeff = (*in + 1) >> 1;
701 
702  for (y = 0; y < blk_size; out += pitch, y++) {
703  out[0] = dc_coeff;
704  for (x = 1; x < blk_size; x++)
705  out[x] = 0;
706  }
707 }
708 
709 void ff_ivi_row_slant4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
710 {
711  int i;
712  int t0, t1, t2, t3, t4;
713 
714 #define COMPENSATE(x) (((x) + 1)>>1)
715  for (i = 0; i < 4; i++) {
716  if (!in[0] && !in[1] && !in[2] && !in[3]) {
717  memset(out, 0, 4*sizeof(out[0]));
718  } else {
719  IVI_INV_SLANT4( in[0], in[1], in[2], in[3],
720  out[0], out[1], out[2], out[3],
721  t0, t1, t2, t3, t4);
722  }
723  in += 4;
724  out += pitch;
725  }
726 #undef COMPENSATE
727 }
728 
729 void ff_ivi_col_slant4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
730 {
731  int i, row2;
732  int t0, t1, t2, t3, t4;
733 
734  row2 = pitch << 1;
735 
736 #define COMPENSATE(x) (((x) + 1)>>1)
737  for (i = 0; i < 4; i++) {
738  if (flags[i]) {
739  IVI_INV_SLANT4(in[0], in[4], in[8], in[12],
740  out[0], out[pitch], out[row2], out[row2 + pitch],
741  t0, t1, t2, t3, t4);
742  } else {
743  out[0] = out[pitch] = out[row2] = out[row2 + pitch] = 0;
744  }
745 
746  in++;
747  out++;
748  }
749 #undef COMPENSATE
750 }
751 
752 void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch,
753  const uint8_t *flags)
754 {
755  int x, y;
756 
757  for (y = 0; y < 8; out += pitch, in += 8, y++)
758  for (x = 0; x < 8; x++)
759  out[x] = in[x];
760 }
761 
762 void ff_ivi_put_dc_pixel_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch,
763  int blk_size)
764 {
765  int y;
766 
767  out[0] = in[0];
768  memset(out + 1, 0, 7*sizeof(out[0]));
769  out += pitch;
770 
771  for (y = 1; y < 8; out += pitch, y++)
772  memset(out, 0, 8*sizeof(out[0]));
773 }
774 
775 #define IVI_MC_TEMPLATE(size, suffix, OP) \
776 static void ivi_mc_ ## size ##x## size ## suffix(int16_t *buf, \
777  ptrdiff_t dpitch, \
778  const int16_t *ref_buf, \
779  ptrdiff_t pitch, int mc_type) \
780 { \
781  int i, j; \
782  const int16_t *wptr; \
783 \
784  switch (mc_type) { \
785  case 0: /* fullpel (no interpolation) */ \
786  for (i = 0; i < size; i++, buf += dpitch, ref_buf += pitch) { \
787  for (j = 0; j < size; j++) {\
788  OP(buf[j], ref_buf[j]); \
789  } \
790  } \
791  break; \
792  case 1: /* horizontal halfpel interpolation */ \
793  for (i = 0; i < size; i++, buf += dpitch, ref_buf += pitch) \
794  for (j = 0; j < size; j++) \
795  OP(buf[j], (ref_buf[j] + ref_buf[j+1]) >> 1); \
796  break; \
797  case 2: /* vertical halfpel interpolation */ \
798  wptr = ref_buf + pitch; \
799  for (i = 0; i < size; i++, buf += dpitch, wptr += pitch, ref_buf += pitch) \
800  for (j = 0; j < size; j++) \
801  OP(buf[j], (ref_buf[j] + wptr[j]) >> 1); \
802  break; \
803  case 3: /* vertical and horizontal halfpel interpolation */ \
804  wptr = ref_buf + pitch; \
805  for (i = 0; i < size; i++, buf += dpitch, wptr += pitch, ref_buf += pitch) \
806  for (j = 0; j < size; j++) \
807  OP(buf[j], (ref_buf[j] + ref_buf[j+1] + wptr[j] + wptr[j+1]) >> 2); \
808  break; \
809  } \
810 } \
811 \
812 void ff_ivi_mc_ ## size ##x## size ## suffix(int16_t *buf, const int16_t *ref_buf, \
813  ptrdiff_t pitch, int mc_type) \
814 { \
815  ivi_mc_ ## size ##x## size ## suffix(buf, pitch, ref_buf, pitch, mc_type); \
816 } \
817 
818 #define IVI_MC_AVG_TEMPLATE(size, suffix, OP) \
819 void ff_ivi_mc_avg_ ## size ##x## size ## suffix(int16_t *buf, \
820  const int16_t *ref_buf, \
821  const int16_t *ref_buf2, \
822  ptrdiff_t pitch, \
823  int mc_type, int mc_type2) \
824 { \
825  int16_t tmp[size * size]; \
826  int i, j; \
827 \
828  ivi_mc_ ## size ##x## size ## _no_delta(tmp, size, ref_buf, pitch, mc_type); \
829  ivi_mc_ ## size ##x## size ## _delta(tmp, size, ref_buf2, pitch, mc_type2); \
830  for (i = 0; i < size; i++, buf += pitch) { \
831  for (j = 0; j < size; j++) {\
832  OP(buf[j], tmp[i * size + j] >> 1); \
833  } \
834  } \
835 } \
836 
837 #define OP_PUT(a, b) (a) = (b)
838 #define OP_ADD(a, b) (a) += (b)
839 
840 IVI_MC_TEMPLATE(8, _no_delta, OP_PUT)
841 IVI_MC_TEMPLATE(8, _delta, OP_ADD)
842 IVI_MC_TEMPLATE(4, _no_delta, OP_PUT)
843 IVI_MC_TEMPLATE(4, _delta, OP_ADD)
844 IVI_MC_AVG_TEMPLATE(8, _no_delta, OP_PUT)
845 IVI_MC_AVG_TEMPLATE(8, _delta, OP_ADD)
846 IVI_MC_AVG_TEMPLATE(4, _no_delta, OP_PUT)
847 IVI_MC_AVG_TEMPLATE(4, _delta, OP_ADD)
ff_ivi_inverse_haar_4x4
void ff_ivi_inverse_haar_4x4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse Haar 4x4 transform for Indeo 4
Definition: ivi_dsp.c:380
out
FILE * out
Definition: movenc.c:54
ff_ivi_row_haar4
void ff_ivi_row_haar4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
one-dimensional inverse 4-point Haar transform on rows for Indeo 4
Definition: ivi_dsp.c:427
ff_ivi_col_haar8
void ff_ivi_col_haar8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
one-dimensional inverse 8-point Haar transform on columns for Indeo 4
Definition: ivi_dsp.c:351
ff_ivi_put_pixels_8x8
void ff_ivi_put_pixels_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
Copy the pixels into the frame buffer.
Definition: ivi_dsp.c:752
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:28
t0
#define t0
Definition: regdef.h:28
t1
#define t1
Definition: regdef.h:29
OP_PUT
#define OP_PUT(a, b)
Definition: ivi_dsp.c:837
ff_ivi_col_haar4
void ff_ivi_col_haar4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
one-dimensional inverse 4-point Haar transform on columns for Indeo 4
Definition: ivi_dsp.c:449
ivi_dsp.h
ff_ivi_dc_row_slant
void ff_ivi_dc_row_slant(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only inverse row slant transform.
Definition: ivi_dsp.c:650
ivi.h
b1
static double b1(void *priv, double x, double y)
Definition: vf_xfade.c:1771
IVIPlaneDesc::height
uint16_t height
Definition: ivi.h:196
ff_ivi_col_slant8
void ff_ivi_col_slant8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D column slant transform
Definition: ivi_dsp.c:668
IVI_MC_AVG_TEMPLATE
#define IVI_MC_AVG_TEMPLATE(size, suffix, OP)
Definition: ivi_dsp.c:818
b3
static double b3(void *priv, double x, double y)
Definition: vf_xfade.c:1773
ff_ivi_row_slant8
void ff_ivi_row_slant8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D row slant transform
Definition: ivi_dsp.c:630
t7
#define t7
Definition: regdef.h:35
IVI_INV_SLANT4
#define IVI_INV_SLANT4(s1, s4, s2, s3, d1, d2, d3, d4, t0, t1, t2, t3, t4)
inverse slant4 transform
Definition: ivi_dsp.c:528
ff_ivi_col_slant4
void ff_ivi_col_slant4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D column slant transform
Definition: ivi_dsp.c:729
IVIPlaneDesc
color plane (luma or chroma) information
Definition: ivi.h:194
t5
#define t5
Definition: regdef.h:33
t6
#define t6
Definition: regdef.h:34
ff_ivi_recompose53
void ff_ivi_recompose53(const IVIPlaneDesc *plane, uint8_t *dst, const ptrdiff_t dst_pitch)
5/3 wavelet recomposition filter for Indeo5
Definition: ivi_dsp.c:34
IVI_MC_TEMPLATE
#define IVI_MC_TEMPLATE(size, suffix, OP)
Definition: ivi_dsp.c:775
IVIPlaneDesc::width
uint16_t width
Definition: ivi.h:195
ff_ivi_inverse_haar_8x8
void ff_ivi_inverse_haar_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse Haar 8x8 transform for Indeo 4
Definition: ivi_dsp.c:271
OP_ADD
#define OP_ADD(a, b)
Definition: ivi_dsp.c:838
t8
#define t8
Definition: regdef.h:53
ff_ivi_inverse_slant_8x8
void ff_ivi_inverse_slant_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse slant 8x8 transform
Definition: ivi_dsp.c:537
b2
static double b2(void *priv, double x, double y)
Definition: vf_xfade.c:1772
ff_ivi_row_slant4
void ff_ivi_row_slant4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
inverse 1D row slant transform
Definition: ivi_dsp.c:709
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
t4
#define t4
Definition: regdef.h:32
t3
#define t3
Definition: regdef.h:31
common.h
IVIBandDesc::buf
int16_t * buf
pointer to the output buffer for this band
Definition: ivi.h:152
ff_ivi_dc_slant_2d
void ff_ivi_dc_slant_2d(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only two-dimensional inverse slant transform.
Definition: ivi_dsp.c:617
ff_ivi_put_dc_pixel_8x8
void ff_ivi_put_dc_pixel_8x8(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
Copy the DC coefficient into the first pixel of the block and zero all others.
Definition: ivi_dsp.c:762
ff_ivi_recompose_haar
void ff_ivi_recompose_haar(const IVIPlaneDesc *plane, uint8_t *dst, const ptrdiff_t dst_pitch)
Haar wavelet recomposition filter for Indeo 4.
Definition: ivi_dsp.c:191
INV_HAAR8
#define INV_HAAR8(s1, s5, s3, s7, s2, s4, s6, s8, d1, d2, d3, d4, d5, d6, d7, d8, t0, t1, t2, t3, t4, t5, t6, t7, t8)
inverse 8-point Haar transform
Definition: ivi_dsp.c:244
ff_ivi_dc_haar_2d
void ff_ivi_dc_haar_2d(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only two-dimensional inverse Haar transform for Indeo 4.
Definition: ivi_dsp.c:473
t2
#define t2
Definition: regdef.h:30
av_clip_uint8
#define av_clip_uint8
Definition: common.h:101
IVIPlaneDesc::bands
IVIBandDesc * bands
array of band descriptors
Definition: ivi.h:198
shift
static int shift(int a, int b)
Definition: sonic.c:88
IVI_INV_SLANT8
#define IVI_INV_SLANT8(s1, s4, s8, s5, s2, s6, s3, s7, d1, d2, d3, d4, d5, d6, d7, d8, t0, t1, t2, t3, t4, t5, t6, t7, t8)
inverse slant8 transform
Definition: ivi_dsp.c:506
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
int32_t
int32_t
Definition: audioconvert.c:56
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
ff_ivi_row_haar8
void ff_ivi_row_haar8(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
one-dimensional inverse 8-point Haar transform on rows for Indeo 4
Definition: ivi_dsp.c:326
b0
static double b0(void *priv, double x, double y)
Definition: vf_xfade.c:1770
ff_ivi_dc_col_slant
void ff_ivi_dc_col_slant(const int32_t *in, int16_t *out, ptrdiff_t pitch, int blk_size)
DC-only inverse column slant transform.
Definition: ivi_dsp.c:695
INV_HAAR4
#define INV_HAAR4(s1, s3, s5, s7, d1, d2, d3, d4, t0, t1, t2, t3, t4)
inverse 4-point Haar transform
Definition: ivi_dsp.c:262
IVIBandDesc::pitch
ptrdiff_t pitch
pitch associated with the buffers above
Definition: ivi.h:156
ff_ivi_inverse_slant_4x4
void ff_ivi_inverse_slant_4x4(const int32_t *in, int16_t *out, ptrdiff_t pitch, const uint8_t *flags)
two-dimensional inverse slant 4x4 transform
Definition: ivi_dsp.c:577
Generated on Wed Aug 24 2022 21:41:30 for FFmpeg by   doxygen 1.8.17