2 * Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
3 * written, produced, and directed by Alan Smithee
5 * This file is part of FFmpeg.
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.
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.
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
29 #include "mpegvideo.h"
31 #include "indeo3data.h"
38 unsigned char *the_buf;
39 unsigned int the_buf_size;
40 unsigned short y_w, y_h;
41 unsigned short uv_w, uv_h;
44 typedef struct Indeo3DecodeContext {
45 AVCodecContext *avctx;
53 unsigned char *ModPred;
54 unsigned short *corrector_type;
55 } Indeo3DecodeContext;
57 static int corrector_type_0[24] = {
58 195, 159, 133, 115, 101, 93, 87, 77,
59 195, 159, 133, 115, 101, 93, 87, 77,
60 128, 79, 79, 79, 79, 79, 79, 79
63 static int corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
65 static void build_modpred(Indeo3DecodeContext *s)
69 s->ModPred = (unsigned char *) av_malloc (8 * 128);
71 for (i=0; i < 128; ++i) {
72 s->ModPred[i+0*128] = (i > 126) ? 254 : 2*((i + 1) - ((i + 1) % 2));
73 s->ModPred[i+1*128] = (i == 7) ? 20 : ((i == 119 || i == 120)
74 ? 236 : 2*((i + 2) - ((i + 1) % 3)));
75 s->ModPred[i+2*128] = (i > 125) ? 248 : 2*((i + 2) - ((i + 2) % 4));
76 s->ModPred[i+3*128] = 2*((i + 1) - ((i - 3) % 5));
77 s->ModPred[i+4*128] = (i == 8) ? 20 : 2*((i + 1) - ((i - 3) % 6));
78 s->ModPred[i+5*128] = 2*((i + 4) - ((i + 3) % 7));
79 s->ModPred[i+6*128] = (i > 123) ? 240 : 2*((i + 4) - ((i + 4) % 8));
80 s->ModPred[i+7*128] = 2*((i + 5) - ((i + 4) % 9));
83 s->corrector_type = (unsigned short *) av_malloc (24 * 256 * sizeof(unsigned short));
85 for (i=0; i < 24; ++i) {
86 for (j=0; j < 256; ++j) {
87 s->corrector_type[i*256+j] = (j < corrector_type_0[i])
88 ? 1 : ((j < 248 || (i == 16 && j == 248))
89 ? 0 : corrector_type_2[j - 248]);
94 static void iv_Decode_Chunk(Indeo3DecodeContext *s, unsigned char *cur,
95 unsigned char *ref, int width, int height, unsigned char *buf1,
96 long fflags2, unsigned char *hdr,
97 unsigned char *buf2, int min_width_160);
99 /* ---------------------------------------------------------------------- */
100 static void iv_alloc_frames(Indeo3DecodeContext *s)
102 int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,
104 unsigned int bufsize;
106 luma_width = (s->width + 3) & (~3);
107 luma_height = (s->height + 3) & (~3);
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) + 3) & (~3);
116 chroma_height = ((luma_height>> 2) + 3) & (~3);
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 if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
203 chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
204 chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
205 offs1 = le2me_32(*(uint32_t *)buf_pos);
207 offs2 = le2me_32(*(uint32_t *)buf_pos);
209 offs3 = le2me_32(*(uint32_t *)buf_pos);
212 if(fflags3 == 0x80) return 4;
214 if(fflags1 & 0x200) {
215 s->cur_frame = s->iv_frame + 1;
216 s->ref_frame = s->iv_frame;
218 s->cur_frame = s->iv_frame;
219 s->ref_frame = s->iv_frame + 1;
222 buf_pos = buf + 16 + offs1;
223 offs = le2me_32(*(uint32_t *)buf_pos);
226 iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
227 hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
228 FFMIN(hdr_width, 160));
230 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
233 buf_pos = buf + 16 + offs2;
234 offs = le2me_32(*(uint32_t *)buf_pos);
237 iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
238 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
239 FFMIN(chroma_width, 40));
241 buf_pos = buf + 16 + offs3;
242 offs = le2me_32(*(uint32_t *)buf_pos);
245 iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
246 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
247 FFMIN(chroma_width, 40));
260 long split_direction;
264 /* ---------------------------------------------------------------------- */
266 #define LV1_CHECK(buf1,rle_v3,lv1,lp2) \
267 if((lv1 & 0x80) != 0) { \
278 #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \
291 #define LP2_CHECK(buf1,rle_v3,lp2) \
292 if(lp2 == 0 && rle_v3 != 0) \
300 #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
308 static void iv_Decode_Chunk(Indeo3DecodeContext *s,
309 unsigned char *cur, unsigned char *ref, int width, int height,
310 unsigned char *buf1, long fflags2, unsigned char *hdr,
311 unsigned char *buf2, int min_width_160)
313 unsigned char bit_buf;
314 unsigned long bit_pos, lv, lv1, lv2;
315 long *width_tbl, width_tbl_arr[10];
316 signed char *ref_vectors;
317 unsigned char *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
318 uint32_t *cur_lp, *ref_lp;
319 const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
320 unsigned short *correction_type_sp[2];
321 ustr_t strip_tbl[20], *strip;
322 int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
323 rle_v1, rle_v2, rle_v3;
329 width_tbl = width_tbl_arr + 1;
330 i = (width < 0 ? width + 3 : width)/4;
331 for(j = -1; j < 8; j++)
332 width_tbl[j] = i * j;
336 for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
338 strip->ypos = strip->xpos = 0;
339 for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
340 strip->height = height;
341 strip->split_direction = 0;
342 strip->split_flag = 0;
347 rle_v1 = rle_v2 = rle_v3 = 0;
349 while(strip >= strip_tbl) {
356 cmd = (bit_buf >> bit_pos) & 0x03;
360 memcpy(strip, strip-1, sizeof(ustr_t));
361 strip->split_flag = 1;
362 strip->split_direction = 0;
363 strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
365 } else if(cmd == 1) {
367 memcpy(strip, strip-1, sizeof(ustr_t));
368 strip->split_flag = 1;
369 strip->split_direction = 1;
370 strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
372 } else if(cmd == 2) {
373 if(strip->usl7 == 0) {
378 } else if(cmd == 3) {
379 if(strip->usl7 == 0) {
381 ref_vectors = (signed char*)buf2 + (*buf1 * 2);
387 cur_frm_pos = cur + width * strip->ypos + strip->xpos;
389 if((blks_width = strip->width) < 0)
392 blks_height = strip->height;
394 if(ref_vectors != NULL) {
395 ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
396 ref_vectors[1] + strip->xpos;
398 ref_frm_pos = cur_frm_pos - width_tbl[4];
407 cmd = (bit_buf >> bit_pos) & 0x03;
409 if(cmd == 0 || ref_vectors != NULL) {
410 for(lp1 = 0; lp1 < blks_width; lp1++) {
411 for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
412 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
424 if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
425 cp2 = s->ModPred + ((lv - 8) << 7);
427 for(i = 0; i < blks_width << 2; i++) {
433 if(k == 1 || k == 4) {
434 lv = (hdr[j] & 0xf) + fflags2;
435 correction_type_sp[0] = s->corrector_type + (lv << 8);
436 correction_lp[0] = correction + (lv << 8);
437 lv = (hdr[j] >> 4) + fflags2;
438 correction_lp[1] = correction + (lv << 8);
439 correction_type_sp[1] = s->corrector_type + (lv << 8);
441 correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
442 correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
443 correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
444 correction_lp[0] = correction_lp[1] = correction + (lv << 8);
449 case 0: /********** CASE 0 **********/
450 for( ; blks_height > 0; blks_height -= 4) {
451 for(lp1 = 0; lp1 < blks_width; lp1++) {
452 for(lp2 = 0; lp2 < 4; ) {
454 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
455 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
457 switch(correction_type_sp[0][k]) {
459 *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
463 res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
464 ((unsigned short *)cur_lp)[0] = le2me_16(res);
465 res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
466 ((unsigned short *)cur_lp)[1] = le2me_16(res);
472 for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
473 cur_lp[j] = ref_lp[j];
479 for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
480 cur_lp[j] = ref_lp[j];
486 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
488 if(rle_v1 == 1 || ref_vectors != NULL) {
489 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
490 cur_lp[j] = ref_lp[j];
493 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
500 LP2_CHECK(buf1,rle_v3,lp2)
502 for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
503 cur_lp[j] = ref_lp[j];
515 if(ref_vectors != NULL) {
516 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
517 cur_lp[j] = ref_lp[j];
524 lv = (lv1 & 0x7F) << 1;
527 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
530 LV1_CHECK(buf1,rle_v3,lv1,lp2)
541 cur_frm_pos += ((width - blks_width) * 4);
542 ref_frm_pos += ((width - blks_width) * 4);
547 case 3: /********** CASE 3 **********/
548 if(ref_vectors != NULL)
552 for( ; blks_height > 0; blks_height -= 8) {
553 for(lp1 = 0; lp1 < blks_width; lp1++) {
554 for(lp2 = 0; lp2 < 4; ) {
557 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
558 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
560 switch(correction_type_sp[lp2 & 0x01][k]) {
562 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
563 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
564 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
566 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
571 res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
572 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
573 res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
574 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
576 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
577 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
579 cur_lp[0] = cur_lp[width_tbl[1]];
586 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
594 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
616 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
619 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
620 cur_lp[j] = ref_lp[j];
623 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
626 rle_v2 = (*buf1) - 1;
630 LP2_CHECK(buf1,rle_v3,lp2)
632 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
638 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
640 lv = (lv1 & 0x7F) << 1;
644 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
647 LV1_CHECK(buf1,rle_v3,lv1,lp2)
658 cur_frm_pos += (((width * 2) - blks_width) * 4);
663 case 10: /********** CASE 10 **********/
664 if(ref_vectors == NULL) {
667 for( ; blks_height > 0; blks_height -= 8) {
668 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
669 for(lp2 = 0; lp2 < 4; ) {
671 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
672 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
675 if(lp2 == 0 && flag1 != 0) {
676 #ifdef WORDS_BIGENDIAN
677 lv1 = lv1 & 0xFF00FF00;
678 lv1 = (lv1 >> 8) | lv1;
679 lv2 = lv2 & 0xFF00FF00;
680 lv2 = (lv2 >> 8) | lv2;
682 lv1 = lv1 & 0x00FF00FF;
683 lv1 = (lv1 << 8) | lv1;
684 lv2 = lv2 & 0x00FF00FF;
685 lv2 = (lv2 << 8) | lv2;
689 switch(correction_type_sp[lp2 & 0x01][k]) {
691 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
692 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1);
693 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
694 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
695 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
697 cur_lp[0] = cur_lp[width_tbl[1]];
698 cur_lp[1] = cur_lp[width_tbl[1]+1];
704 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
705 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
706 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
707 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
708 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
710 cur_lp[0] = cur_lp[width_tbl[1]];
711 cur_lp[1] = cur_lp[width_tbl[1]+1];
720 for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
724 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
725 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
727 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
738 if(lp2 == 0 && flag1 != 0) {
739 for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
743 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
744 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
746 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
757 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
760 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
764 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
765 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
767 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
773 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
777 rle_v2 = (*buf1) - 1;
780 LP2_CHECK(buf1,rle_v3,lp2)
782 if(lp2 == 0 && flag1 != 0) {
783 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
787 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
788 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
790 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
815 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
817 lv = (lv1 & 0x7F) << 1;
820 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
822 LV1_CHECK(buf1,rle_v3,lv1,lp2)
833 cur_frm_pos += (((width * 2) - blks_width) * 4);
837 for( ; blks_height > 0; blks_height -= 8) {
838 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
839 for(lp2 = 0; lp2 < 4; ) {
841 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
842 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
844 switch(correction_type_sp[lp2 & 0x01][k]) {
846 lv1 = correctionloworder_lp[lp2 & 0x01][k];
847 lv2 = correctionhighorder_lp[lp2 & 0x01][k];
848 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
849 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
850 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
851 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
856 lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
857 lv2 = correctionloworder_lp[lp2 & 0x01][k];
858 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
859 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
860 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
861 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
867 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
868 cur_lp[j] = ref_lp[j];
869 cur_lp[j+1] = ref_lp[j+1];
877 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
878 cur_lp[j] = ref_lp[j];
879 cur_lp[j+1] = ref_lp[j+1];
887 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
888 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
889 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
890 ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
892 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
896 rle_v2 = (*buf1) - 1;
900 LP2_CHECK(buf1,rle_v3,lp2)
903 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
904 cur_lp[j] = ref_lp[j];
905 cur_lp[j+1] = ref_lp[j+1];
911 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
913 lv = (lv1 & 0x7F) << 1;
916 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
917 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
918 LV1_CHECK(buf1,rle_v3,lv1,lp2)
930 cur_frm_pos += (((width * 2) - blks_width) * 4);
931 ref_frm_pos += (((width * 2) - blks_width) * 4);
936 case 11: /********** CASE 11 **********/
937 if(ref_vectors == NULL)
940 for( ; blks_height > 0; blks_height -= 8) {
941 for(lp1 = 0; lp1 < blks_width; lp1++) {
942 for(lp2 = 0; lp2 < 4; ) {
944 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
945 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
947 switch(correction_type_sp[lp2 & 0x01][k]) {
949 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
950 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
955 lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
956 lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
957 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
958 ((unsigned short *)cur_lp)[0] = le2me_16(res);
959 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
960 ((unsigned short *)cur_lp)[1] = le2me_16(res);
961 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
962 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
963 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
964 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
970 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
971 cur_lp[j] = ref_lp[j];
978 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
979 cur_lp[j] = ref_lp[j];
986 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
988 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
989 cur_lp[j] = ref_lp[j];
991 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
995 rle_v2 = (*buf1) - 1;
999 LP2_CHECK(buf1,rle_v3,lp2)
1002 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
1003 cur_lp[j] = ref_lp[j];
1008 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
1010 lv = (lv1 & 0x7F) << 1;
1013 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
1015 LV1_CHECK(buf1,rle_v3,lv1,lp2)
1027 cur_frm_pos += (((width * 2) - blks_width) * 4);
1028 ref_frm_pos += (((width * 2) - blks_width) * 4);
1037 if(strip < strip_tbl)
1040 for( ; strip >= strip_tbl; strip--) {
1041 if(strip->split_flag != 0) {
1042 strip->split_flag = 0;
1043 strip->usl7 = (strip-1)->usl7;
1045 if(strip->split_direction) {
1046 strip->xpos += strip->width;
1047 strip->width = (strip-1)->width - strip->width;
1048 if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1049 strip->width = width - strip->xpos;
1051 strip->ypos += strip->height;
1052 strip->height = (strip-1)->height - strip->height;
1060 static int indeo3_decode_init(AVCodecContext *avctx)
1062 Indeo3DecodeContext *s = avctx->priv_data;
1065 s->width = avctx->width;
1066 s->height = avctx->height;
1067 avctx->pix_fmt = PIX_FMT_YUV410P;
1075 static int indeo3_decode_frame(AVCodecContext *avctx,
1076 void *data, int *data_size,
1077 unsigned char *buf, int buf_size)
1079 Indeo3DecodeContext *s=avctx->priv_data;
1080 unsigned char *src, *dest;
1083 iv_decode_frame(s, buf, buf_size);
1085 if(s->frame.data[0])
1086 avctx->release_buffer(avctx, &s->frame);
1088 s->frame.reference = 0;
1089 if(avctx->get_buffer(avctx, &s->frame) < 0) {
1090 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1094 src = s->cur_frame->Ybuf;
1095 dest = s->frame.data[0];
1096 for (y = 0; y < s->height; y++) {
1097 memcpy(dest, src, s->cur_frame->y_w);
1098 src += s->cur_frame->y_w;
1099 dest += s->frame.linesize[0];
1102 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1104 src = s->cur_frame->Ubuf;
1105 dest = s->frame.data[1];
1106 for (y = 0; y < s->height / 4; y++) {
1107 memcpy(dest, src, s->cur_frame->uv_w);
1108 src += s->cur_frame->uv_w;
1109 dest += s->frame.linesize[1];
1112 src = s->cur_frame->Vbuf;
1113 dest = s->frame.data[2];
1114 for (y = 0; y < s->height / 4; y++) {
1115 memcpy(dest, src, s->cur_frame->uv_w);
1116 src += s->cur_frame->uv_w;
1117 dest += s->frame.linesize[2];
1121 *data_size=sizeof(AVFrame);
1122 *(AVFrame*)data= s->frame;
1127 static int indeo3_decode_end(AVCodecContext *avctx)
1129 Indeo3DecodeContext *s = avctx->priv_data;
1136 AVCodec indeo3_decoder = {
1140 sizeof(Indeo3DecodeContext),
1144 indeo3_decode_frame,