2 * Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
3 * written, produced, and directed by Alan Smithee
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 #include "mpegvideo.h"
30 #include "indeo3data.h"
37 unsigned char *the_buf;
38 unsigned int the_buf_size;
39 unsigned short y_w, y_h;
40 unsigned short uv_w, uv_h;
43 typedef struct Indeo3DecodeContext {
44 AVCodecContext *avctx;
52 unsigned char *ModPred;
53 unsigned short *corrector_type;
54 } Indeo3DecodeContext;
56 static int corrector_type_0[24] = {
57 195, 159, 133, 115, 101, 93, 87, 77,
58 195, 159, 133, 115, 101, 93, 87, 77,
59 128, 79, 79, 79, 79, 79, 79, 79
62 static int corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
64 static void build_modpred(Indeo3DecodeContext *s)
68 s->ModPred = (unsigned char *) av_malloc (8 * 128);
70 for (i=0; i < 128; ++i) {
71 s->ModPred[i+0*128] = (i > 126) ? 254 : 2*((i + 1) - ((i + 1) % 2));
72 s->ModPred[i+1*128] = (i == 7) ? 20 : ((i == 119 || i == 120)
73 ? 236 : 2*((i + 2) - ((i + 1) % 3)));
74 s->ModPred[i+2*128] = (i > 125) ? 248 : 2*((i + 2) - ((i + 2) % 4));
75 s->ModPred[i+3*128] = 2*((i + 1) - ((i - 3) % 5));
76 s->ModPred[i+4*128] = (i == 8) ? 20 : 2*((i + 1) - ((i - 3) % 6));
77 s->ModPred[i+5*128] = 2*((i + 4) - ((i + 3) % 7));
78 s->ModPred[i+6*128] = (i > 123) ? 240 : 2*((i + 4) - ((i + 4) % 8));
79 s->ModPred[i+7*128] = 2*((i + 5) - ((i + 4) % 9));
82 s->corrector_type = (unsigned short *) av_malloc (24 * 256 * sizeof(unsigned short));
84 for (i=0; i < 24; ++i) {
85 for (j=0; j < 256; ++j) {
86 s->corrector_type[i*256+j] = (j < corrector_type_0[i])
87 ? 1 : ((j < 248 || (i == 16 && j == 248))
88 ? 0 : corrector_type_2[j - 248]);
93 static void iv_Decode_Chunk(Indeo3DecodeContext *s, unsigned char *cur,
94 unsigned char *ref, int width, int height, unsigned char *buf1,
95 long fflags2, unsigned char *hdr,
96 unsigned char *buf2, int min_width_160);
98 #define min(a,b) ((a) < (b) ? (a) : (b))
100 /* ---------------------------------------------------------------------- */
101 static void iv_alloc_frames(Indeo3DecodeContext *s)
103 int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,
104 chroma_pixels, bufsize, i;
106 luma_width = (s->width + 15) & -0x10;
107 luma_height = (s->height + 15) & -0x10;
109 s->iv_frame[0].y_w = s->iv_frame[0].y_h =
110 s->iv_frame[0].the_buf_size = 0;
111 s->iv_frame[1].y_w = s->iv_frame[1].y_h =
112 s->iv_frame[1].the_buf_size = 0;
113 s->iv_frame[1].the_buf = NULL;
115 chroma_width = luma_width >> 2;
116 chroma_height = luma_height >> 2;
117 luma_pixels = luma_width * luma_height;
118 chroma_pixels = chroma_width * chroma_height;
120 bufsize = luma_pixels * 2 + luma_width * 3 +
121 (chroma_pixels + chroma_width) * 4;
123 if((s->iv_frame[0].the_buf =
124 (s->iv_frame[0].the_buf_size == 0 ? av_malloc(bufsize) :
125 av_realloc(s->iv_frame[0].the_buf, bufsize))) == NULL)
127 s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
128 s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
129 s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
130 s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
131 s->iv_frame[0].the_buf_size = bufsize;
133 s->iv_frame[0].Ybuf = s->iv_frame[0].the_buf + luma_width;
134 i = luma_pixels + luma_width * 2;
135 s->iv_frame[1].Ybuf = s->iv_frame[0].the_buf + i;
136 i += (luma_pixels + luma_width);
137 s->iv_frame[0].Ubuf = s->iv_frame[0].the_buf + i;
138 i += (chroma_pixels + chroma_width);
139 s->iv_frame[1].Ubuf = s->iv_frame[0].the_buf + i;
140 i += (chroma_pixels + chroma_width);
141 s->iv_frame[0].Vbuf = s->iv_frame[0].the_buf + i;
142 i += (chroma_pixels + chroma_width);
143 s->iv_frame[1].Vbuf = s->iv_frame[0].the_buf + i;
145 for(i = 1; i <= luma_width; i++)
146 s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] =
147 s->iv_frame[0].Ubuf[-i] = 0x80;
149 for(i = 1; i <= chroma_width; i++) {
150 s->iv_frame[1].Ubuf[-i] = 0x80;
151 s->iv_frame[0].Vbuf[-i] = 0x80;
152 s->iv_frame[1].Vbuf[-i] = 0x80;
153 s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
157 /* ---------------------------------------------------------------------- */
158 static void iv_free_func(Indeo3DecodeContext *s)
162 for(i = 0 ; i < 2 ; i++) {
163 if(s->iv_frame[i].the_buf != NULL)
164 av_free(s->iv_frame[i].the_buf);
165 s->iv_frame[i].Ybuf = s->iv_frame[i].Ubuf =
166 s->iv_frame[i].Vbuf = NULL;
167 s->iv_frame[i].the_buf = NULL;
168 s->iv_frame[i].the_buf_size = 0;
169 s->iv_frame[i].y_w = s->iv_frame[i].y_h = 0;
170 s->iv_frame[i].uv_w = s->iv_frame[i].uv_h = 0;
174 av_free(s->corrector_type);
177 /* ---------------------------------------------------------------------- */
178 static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
179 unsigned char *buf, int buf_size)
181 unsigned int hdr_width, hdr_height,
182 chroma_width, chroma_height;
183 unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
184 unsigned char *hdr_pos, *buf_pos;
189 fflags1 = le2me_16(*(uint16_t *)buf_pos);
191 fflags3 = le2me_32(*(uint32_t *)buf_pos);
193 fflags2 = *buf_pos++;
195 hdr_height = le2me_16(*(uint16_t *)buf_pos);
197 hdr_width = le2me_16(*(uint16_t *)buf_pos);
199 chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
200 chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
201 offs1 = le2me_32(*(uint32_t *)buf_pos);
203 offs2 = le2me_32(*(uint32_t *)buf_pos);
205 offs3 = le2me_32(*(uint32_t *)buf_pos);
208 if(fflags3 == 0x80) return 4;
210 if(fflags1 & 0x200) {
211 s->cur_frame = s->iv_frame + 1;
212 s->ref_frame = s->iv_frame;
214 s->cur_frame = s->iv_frame;
215 s->ref_frame = s->iv_frame + 1;
218 buf_pos = buf + 16 + offs1;
219 offs = le2me_32(*(uint32_t *)buf_pos);
222 iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
223 hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
224 min(hdr_width, 160));
226 buf_pos = buf + 16 + offs2;
227 offs = le2me_32(*(uint32_t *)buf_pos);
230 iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
231 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
232 min(chroma_width, 40));
234 buf_pos = buf + 16 + offs3;
235 offs = le2me_32(*(uint32_t *)buf_pos);
238 iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
239 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
240 min(chroma_width, 40));
251 long split_direction;
255 /* ---------------------------------------------------------------------- */
257 #define LV1_CHECK(buf1,rle_v3,lv1,lp2) \
258 if((lv1 & 0x80) != 0) { \
269 #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \
282 #define LP2_CHECK(buf1,rle_v3,lp2) \
283 if(lp2 == 0 && rle_v3 != 0) \
291 #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
299 static void iv_Decode_Chunk(Indeo3DecodeContext *s,
300 unsigned char *cur, unsigned char *ref, int width, int height,
301 unsigned char *buf1, long fflags2, unsigned char *hdr,
302 unsigned char *buf2, int min_width_160)
304 unsigned char bit_buf;
305 unsigned long bit_pos, lv, lv1, lv2;
306 long *width_tbl, width_tbl_arr[10];
308 unsigned char *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
309 unsigned long *cur_lp, *ref_lp, *correction_lp[2], *correctionloworder_lp[2],
310 *correctionhighorder_lp[2];
311 unsigned short *correction_type_sp[2];
312 ustr_t strip_tbl[20], *strip;
313 int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
314 rle_v1, rle_v2, rle_v3;
319 width_tbl = width_tbl_arr + 1;
320 i = (width < 0 ? width + 3 : width)/4;
321 for(j = -1; j < 8; j++)
322 width_tbl[j] = i * j;
326 for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
328 strip->ypos = strip->xpos = 0;
329 for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
330 strip->height = height;
331 strip->split_direction = 0;
332 strip->split_flag = 0;
337 rle_v1 = rle_v2 = rle_v3 = 0;
339 while(strip >= strip_tbl) {
346 cmd = (bit_buf >> bit_pos) & 0x03;
350 memcpy(strip, strip-1, sizeof(ustr_t));
351 strip->split_flag = 1;
352 strip->split_direction = 0;
353 strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
355 } else if(cmd == 1) {
357 memcpy(strip, strip-1, sizeof(ustr_t));
358 strip->split_flag = 1;
359 strip->split_direction = 1;
360 strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
362 } else if(cmd == 2) {
363 if(strip->usl7 == 0) {
368 } else if(cmd == 3) {
369 if(strip->usl7 == 0) {
371 ref_vectors = buf2 + (*buf1 * 2);
377 cur_frm_pos = cur + width * strip->ypos + strip->xpos;
379 if((blks_width = strip->width) < 0)
382 blks_height = strip->height;
384 if(ref_vectors != NULL) {
385 ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
386 ref_vectors[1] + strip->xpos;
388 ref_frm_pos = cur_frm_pos - width_tbl[4];
397 cmd = (bit_buf >> bit_pos) & 0x03;
399 if(cmd == 0 || ref_vectors != NULL) {
400 for(lp1 = 0; lp1 < blks_width; lp1++) {
401 for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
402 ((unsigned long *)cur_frm_pos)[j] = ((unsigned long *)ref_frm_pos)[j];
414 if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
415 cp2 = s->ModPred + ((lv - 8) << 7);
417 for(i = 0; i < blks_width << 2; i++) { *(cp++) = cp2[*cp >> 1]; }
420 if(k == 1 || k == 4) {
421 lv = (hdr[j] & 0xf) + fflags2;
422 correction_type_sp[0] = s->corrector_type + (lv << 8);
423 correction_lp[0] = correction + (lv << 8);
424 lv = (hdr[j] >> 4) + fflags2;
425 correction_lp[1] = correction + (lv << 8);
426 correction_type_sp[1] = s->corrector_type + (lv << 8);
428 correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
429 correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
430 correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
431 correction_lp[0] = correction_lp[1] = correction + (lv << 8);
436 case 0: /********** CASE 0 **********/
437 for( ; blks_height > 0; blks_height -= 4) {
438 for(lp1 = 0; lp1 < blks_width; lp1++) {
439 for(lp2 = 0; lp2 < 4; ) {
441 cur_lp = ((unsigned long *)cur_frm_pos) + width_tbl[lp2];
442 ref_lp = ((unsigned long *)ref_frm_pos) + width_tbl[lp2];
444 switch(correction_type_sp[0][k]) {
446 *cur_lp = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
450 ((unsigned short *)cur_lp)[0] = ((((unsigned short *)(ref_lp))[0] >> 1)
451 + correction_lp[lp2 & 0x01][*buf1++]) << 1;
452 ((unsigned short *)cur_lp)[1] = ((((unsigned short *)(ref_lp))[1] >> 1)
453 + correction_lp[lp2 & 0x01][k]) << 1;
458 for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
459 cur_lp[j] = ref_lp[j];
465 for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
466 cur_lp[j] = ref_lp[j];
472 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
474 if(rle_v1 == 1 || ref_vectors != NULL) {
475 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
476 cur_lp[j] = ref_lp[j];
479 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
486 LP2_CHECK(buf1,rle_v3,lp2)
488 for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
489 cur_lp[j] = ref_lp[j];
501 if(ref_vectors != NULL) {
502 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
503 cur_lp[j] = ref_lp[j];
510 lv = (lv1 & 0x7F) << 1;
513 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
516 LV1_CHECK(buf1,rle_v3,lv1,lp2)
527 cur_frm_pos += ((width - blks_width) * 4);
528 ref_frm_pos += ((width - blks_width) * 4);
533 case 3: /********** CASE 3 **********/
534 if(ref_vectors != NULL)
538 for( ; blks_height > 0; blks_height -= 8) {
539 for(lp1 = 0; lp1 < blks_width; lp1++) {
540 for(lp2 = 0; lp2 < 4; ) {
543 cur_lp = ((unsigned long *)cur_frm_pos) + width_tbl[lp2 * 2];
544 ref_lp = ((unsigned long *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
546 switch(correction_type_sp[lp2 & 0x01][k]) {
548 cur_lp[width_tbl[1]] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
549 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
550 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
552 cur_lp[0] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
557 ((unsigned short *)cur_lp)[width_tbl[2]] =
558 ((((unsigned short *)ref_lp)[0] >> 1) + correction_lp[lp2 & 0x01][*buf1++]) << 1;
559 ((unsigned short *)cur_lp)[width_tbl[2]+1] =
560 ((((unsigned short *)ref_lp)[1] >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
561 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
562 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
564 cur_lp[0] = cur_lp[width_tbl[1]];
570 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
578 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
600 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
603 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
604 cur_lp[j] = ref_lp[j];
607 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
610 rle_v2 = (*buf1) - 1;
614 LP2_CHECK(buf1,rle_v3,lp2)
616 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
622 fprintf(stderr, "UNTESTED.\n");
624 lv = (lv1 & 0x7F) << 1;
628 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
631 LV1_CHECK(buf1,rle_v3,lv1,lp2)
642 cur_frm_pos += (((width * 2) - blks_width) * 4);
647 case 10: /********** CASE 10 **********/
648 if(ref_vectors == NULL) {
651 for( ; blks_height > 0; blks_height -= 8) {
652 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
653 for(lp2 = 0; lp2 < 4; ) {
655 cur_lp = ((unsigned long *)cur_frm_pos) + width_tbl[lp2 * 2];
656 ref_lp = ((unsigned long *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
659 if(lp2 == 0 && flag1 != 0) {
660 lv1 = lv1 & 0x00FF00FF;
661 lv1 = (lv1 << 8) | lv1;
662 lv2 = lv2 & 0x00FF00FF;
663 lv2 = (lv2 << 8) | lv2;
666 switch(correction_type_sp[lp2 & 0x01][k]) {
668 cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1;
669 cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1;
670 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
671 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
672 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
674 cur_lp[0] = cur_lp[width_tbl[1]];
675 cur_lp[1] = cur_lp[width_tbl[1]+1];
681 cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1++]) << 1;
682 cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1;
683 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
684 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
685 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
687 cur_lp[0] = cur_lp[width_tbl[1]];
688 cur_lp[1] = cur_lp[width_tbl[1]+1];
696 for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
700 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
701 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
703 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
714 if(lp2 == 0 && flag1 != 0) {
715 for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
719 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
720 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
722 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
733 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
736 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
740 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
741 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
743 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
749 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
753 rle_v2 = (*buf1) - 1;
756 LP2_CHECK(buf1,rle_v3,lp2)
758 if(lp2 == 0 && flag1 != 0) {
759 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
763 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
764 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
766 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
791 fprintf(stderr, "UNTESTED.\n");
793 lv = (lv1 & 0x7F) << 1;
796 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
798 LV1_CHECK(buf1,rle_v3,lv1,lp2)
809 cur_frm_pos += (((width * 2) - blks_width) * 4);
813 for( ; blks_height > 0; blks_height -= 8) {
814 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
815 for(lp2 = 0; lp2 < 4; ) {
817 cur_lp = ((unsigned long *)cur_frm_pos) + width_tbl[lp2 * 2];
818 ref_lp = ((unsigned long *)ref_frm_pos) + width_tbl[lp2 * 2];
820 switch(correction_type_sp[lp2 & 0x01][k]) {
822 lv1 = correctionloworder_lp[lp2 & 0x01][k];
823 lv2 = correctionhighorder_lp[lp2 & 0x01][k];
824 cur_lp[0] = ((ref_lp[0] >> 1) + lv1) << 1;
825 cur_lp[1] = ((ref_lp[1] >> 1) + lv2) << 1;
826 cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + lv1) << 1;
827 cur_lp[width_tbl[1]+1] = ((ref_lp[width_tbl[1]+1] >> 1) + lv2) << 1;
832 lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
833 lv2 = correctionloworder_lp[lp2 & 0x01][k];
834 cur_lp[0] = ((ref_lp[0] >> 1) + lv1) << 1;
835 cur_lp[1] = ((ref_lp[1] >> 1) + lv2) << 1;
836 cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + lv1) << 1;
837 cur_lp[width_tbl[1]+1] = ((ref_lp[width_tbl[1]+1] >> 1) + lv2) << 1;
843 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
844 cur_lp[j] = ref_lp[j];
845 cur_lp[j+1] = ref_lp[j+1];
853 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
854 cur_lp[j] = ref_lp[j];
855 cur_lp[j+1] = ref_lp[j+1];
863 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
864 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
865 ((unsigned long *)cur_frm_pos)[j] = ((unsigned long *)ref_frm_pos)[j];
866 ((unsigned long *)cur_frm_pos)[j+1] = ((unsigned long *)ref_frm_pos)[j+1];
868 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
872 rle_v2 = (*buf1) - 1;
876 LP2_CHECK(buf1,rle_v3,lp2)
879 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
880 cur_lp[j] = ref_lp[j];
881 cur_lp[j+1] = ref_lp[j+1];
887 fprintf(stderr, "UNTESTED.\n");
889 lv = (lv1 & 0x7F) << 1;
892 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
893 ((unsigned long *)cur_frm_pos)[j] = ((unsigned long *)cur_frm_pos)[j+1] = lv;
894 LV1_CHECK(buf1,rle_v3,lv1,lp2)
906 cur_frm_pos += (((width * 2) - blks_width) * 4);
907 ref_frm_pos += (((width * 2) - blks_width) * 4);
912 case 11: /********** CASE 11 **********/
913 if(ref_vectors == NULL)
916 for( ; blks_height > 0; blks_height -= 8) {
917 for(lp1 = 0; lp1 < blks_width; lp1++) {
918 for(lp2 = 0; lp2 < 4; ) {
920 cur_lp = ((unsigned long *)cur_frm_pos) + width_tbl[lp2 * 2];
921 ref_lp = ((unsigned long *)ref_frm_pos) + width_tbl[lp2 * 2];
923 switch(correction_type_sp[lp2 & 0x01][k]) {
925 cur_lp[0] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
926 cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
931 lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
932 lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
933 ((unsigned short *)cur_lp)[0] = ((((unsigned short *)ref_lp)[0] >> 1) + lv1) << 1;
934 ((unsigned short *)cur_lp)[1] = ((((unsigned short *)ref_lp)[1] >> 1) + lv2) << 1;
935 ((unsigned short *)cur_lp)[width_tbl[2]] = ((((unsigned short *)ref_lp)[width_tbl[2]] >> 1) + lv1) << 1;
936 ((unsigned short *)cur_lp)[width_tbl[2]+1] = ((((unsigned short *)ref_lp)[width_tbl[2]+1] >> 1) + lv2) << 1;
942 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
943 cur_lp[j] = ref_lp[j];
950 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
951 cur_lp[j] = ref_lp[j];
958 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
960 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
961 cur_lp[j] = ref_lp[j];
963 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
967 rle_v2 = (*buf1) - 1;
971 LP2_CHECK(buf1,rle_v3,lp2)
974 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
975 cur_lp[j] = ref_lp[j];
980 fprintf(stderr, "UNTESTED.\n");
982 lv = (lv1 & 0x7F) << 1;
985 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
987 LV1_CHECK(buf1,rle_v3,lv1,lp2)
999 cur_frm_pos += (((width * 2) - blks_width) * 4);
1000 ref_frm_pos += (((width * 2) - blks_width) * 4);
1009 if(strip < strip_tbl)
1012 for( ; strip >= strip_tbl; strip--) {
1013 if(strip->split_flag != 0) {
1014 strip->split_flag = 0;
1015 strip->usl7 = (strip-1)->usl7;
1017 if(strip->split_direction) {
1018 strip->xpos += strip->width;
1019 strip->width = (strip-1)->width - strip->width;
1020 if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1021 strip->width = width - strip->xpos;
1023 strip->ypos += strip->height;
1024 strip->height = (strip-1)->height - strip->height;
1032 static int indeo3_decode_init(AVCodecContext *avctx)
1034 Indeo3DecodeContext *s = avctx->priv_data;
1037 s->width = avctx->width;
1038 s->height = avctx->height;
1039 avctx->pix_fmt = PIX_FMT_YUV410P;
1040 avctx->has_b_frames = 0;
1048 static int indeo3_decode_frame(AVCodecContext *avctx,
1049 void *data, int *data_size,
1050 unsigned char *buf, int buf_size)
1052 Indeo3DecodeContext *s=avctx->priv_data;
1053 unsigned char *src, *dest;
1056 iv_decode_frame(s, buf, buf_size);
1058 if(s->frame.data[0])
1059 avctx->release_buffer(avctx, &s->frame);
1061 s->frame.reference = 0;
1062 if(avctx->get_buffer(avctx, &s->frame) < 0) {
1063 fprintf(stderr, "get_buffer() failed\n");
1067 src = s->cur_frame->Ybuf;
1068 dest = s->frame.data[0];
1069 for (y = 0; y < s->height; y++) {
1070 memcpy(dest, src, s->cur_frame->y_w);
1071 src += s->cur_frame->y_w;
1072 dest += s->frame.linesize[0];
1075 src = s->cur_frame->Ubuf;
1076 dest = s->frame.data[1];
1077 for (y = 0; y < s->height / 4; y++) {
1078 memcpy(dest, src, s->cur_frame->uv_w);
1079 src += s->cur_frame->uv_w;
1080 dest += s->frame.linesize[1];
1083 src = s->cur_frame->Vbuf;
1084 dest = s->frame.data[2];
1085 for (y = 0; y < s->height / 4; y++) {
1086 memcpy(dest, src, s->cur_frame->uv_w);
1087 src += s->cur_frame->uv_w;
1088 dest += s->frame.linesize[2];
1091 *data_size=sizeof(AVFrame);
1092 *(AVFrame*)data= s->frame;
1097 static int indeo3_decode_end(AVCodecContext *avctx)
1099 Indeo3DecodeContext *s = avctx->priv_data;
1106 AVCodec indeo3_decoder = {
1110 sizeof(Indeo3DecodeContext),
1114 indeo3_decode_frame,