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
30 #include "mpegvideo.h"
32 #include "indeo3data.h"
39 unsigned char *the_buf;
40 unsigned int the_buf_size;
41 unsigned short y_w, y_h;
42 unsigned short uv_w, uv_h;
45 typedef struct Indeo3DecodeContext {
46 AVCodecContext *avctx;
54 unsigned char *ModPred;
55 unsigned short *corrector_type;
56 } Indeo3DecodeContext;
58 static int corrector_type_0[24] = {
59 195, 159, 133, 115, 101, 93, 87, 77,
60 195, 159, 133, 115, 101, 93, 87, 77,
61 128, 79, 79, 79, 79, 79, 79, 79
64 static int corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
66 static void build_modpred(Indeo3DecodeContext *s)
70 s->ModPred = (unsigned char *) av_malloc (8 * 128);
72 for (i=0; i < 128; ++i) {
73 s->ModPred[i+0*128] = (i > 126) ? 254 : 2*((i + 1) - ((i + 1) % 2));
74 s->ModPred[i+1*128] = (i == 7) ? 20 : ((i == 119 || i == 120)
75 ? 236 : 2*((i + 2) - ((i + 1) % 3)));
76 s->ModPred[i+2*128] = (i > 125) ? 248 : 2*((i + 2) - ((i + 2) % 4));
77 s->ModPred[i+3*128] = 2*((i + 1) - ((i - 3) % 5));
78 s->ModPred[i+4*128] = (i == 8) ? 20 : 2*((i + 1) - ((i - 3) % 6));
79 s->ModPred[i+5*128] = 2*((i + 4) - ((i + 3) % 7));
80 s->ModPred[i+6*128] = (i > 123) ? 240 : 2*((i + 4) - ((i + 4) % 8));
81 s->ModPred[i+7*128] = 2*((i + 5) - ((i + 4) % 9));
84 s->corrector_type = (unsigned short *) av_malloc (24 * 256 * sizeof(unsigned short));
86 for (i=0; i < 24; ++i) {
87 for (j=0; j < 256; ++j) {
88 s->corrector_type[i*256+j] = (j < corrector_type_0[i])
89 ? 1 : ((j < 248 || (i == 16 && j == 248))
90 ? 0 : corrector_type_2[j - 248]);
95 static void iv_Decode_Chunk(Indeo3DecodeContext *s, unsigned char *cur,
96 unsigned char *ref, int width, int height, unsigned char *buf1,
97 long fflags2, unsigned char *hdr,
98 unsigned char *buf2, int min_width_160);
100 /* ---------------------------------------------------------------------- */
101 static void iv_alloc_frames(Indeo3DecodeContext *s)
103 int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,
105 unsigned int bufsize;
107 luma_width = (s->width + 3) & (~3);
108 luma_height = (s->height + 3) & (~3);
110 s->iv_frame[0].y_w = s->iv_frame[0].y_h =
111 s->iv_frame[0].the_buf_size = 0;
112 s->iv_frame[1].y_w = s->iv_frame[1].y_h =
113 s->iv_frame[1].the_buf_size = 0;
114 s->iv_frame[1].the_buf = NULL;
116 chroma_width = ((luma_width >> 2) + 3) & (~3);
117 chroma_height = ((luma_height>> 2) + 3) & (~3);
118 luma_pixels = luma_width * luma_height;
119 chroma_pixels = chroma_width * chroma_height;
121 bufsize = luma_pixels * 2 + luma_width * 3 +
122 (chroma_pixels + chroma_width) * 4;
124 if((s->iv_frame[0].the_buf =
125 (s->iv_frame[0].the_buf_size == 0 ? av_malloc(bufsize) :
126 av_realloc(s->iv_frame[0].the_buf, bufsize))) == NULL)
128 s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
129 s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
130 s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
131 s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
132 s->iv_frame[0].the_buf_size = bufsize;
134 s->iv_frame[0].Ybuf = s->iv_frame[0].the_buf + luma_width;
135 i = luma_pixels + luma_width * 2;
136 s->iv_frame[1].Ybuf = s->iv_frame[0].the_buf + i;
137 i += (luma_pixels + luma_width);
138 s->iv_frame[0].Ubuf = s->iv_frame[0].the_buf + i;
139 i += (chroma_pixels + chroma_width);
140 s->iv_frame[1].Ubuf = s->iv_frame[0].the_buf + i;
141 i += (chroma_pixels + chroma_width);
142 s->iv_frame[0].Vbuf = s->iv_frame[0].the_buf + i;
143 i += (chroma_pixels + chroma_width);
144 s->iv_frame[1].Vbuf = s->iv_frame[0].the_buf + i;
146 for(i = 1; i <= luma_width; i++)
147 s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] =
148 s->iv_frame[0].Ubuf[-i] = 0x80;
150 for(i = 1; i <= chroma_width; i++) {
151 s->iv_frame[1].Ubuf[-i] = 0x80;
152 s->iv_frame[0].Vbuf[-i] = 0x80;
153 s->iv_frame[1].Vbuf[-i] = 0x80;
154 s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
158 /* ---------------------------------------------------------------------- */
159 static void iv_free_func(Indeo3DecodeContext *s)
163 for(i = 0 ; i < 2 ; i++) {
164 if(s->iv_frame[i].the_buf != NULL)
165 av_free(s->iv_frame[i].the_buf);
166 s->iv_frame[i].Ybuf = s->iv_frame[i].Ubuf =
167 s->iv_frame[i].Vbuf = NULL;
168 s->iv_frame[i].the_buf = NULL;
169 s->iv_frame[i].the_buf_size = 0;
170 s->iv_frame[i].y_w = s->iv_frame[i].y_h = 0;
171 s->iv_frame[i].uv_w = s->iv_frame[i].uv_h = 0;
175 av_free(s->corrector_type);
178 /* ---------------------------------------------------------------------- */
179 static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
180 unsigned char *buf, int buf_size)
182 unsigned int hdr_width, hdr_height,
183 chroma_width, chroma_height;
184 unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
185 unsigned char *hdr_pos, *buf_pos;
190 fflags1 = le2me_16(*(uint16_t *)buf_pos);
192 fflags3 = le2me_32(*(uint32_t *)buf_pos);
194 fflags2 = *buf_pos++;
196 hdr_height = le2me_16(*(uint16_t *)buf_pos);
198 hdr_width = le2me_16(*(uint16_t *)buf_pos);
200 if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
204 chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
205 chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
206 offs1 = le2me_32(*(uint32_t *)buf_pos);
208 offs2 = le2me_32(*(uint32_t *)buf_pos);
210 offs3 = le2me_32(*(uint32_t *)buf_pos);
213 if(fflags3 == 0x80) return 4;
215 if(fflags1 & 0x200) {
216 s->cur_frame = s->iv_frame + 1;
217 s->ref_frame = s->iv_frame;
219 s->cur_frame = s->iv_frame;
220 s->ref_frame = s->iv_frame + 1;
223 buf_pos = buf + 16 + offs1;
224 offs = le2me_32(*(uint32_t *)buf_pos);
227 iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
228 hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
229 FFMIN(hdr_width, 160));
231 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
234 buf_pos = buf + 16 + offs2;
235 offs = le2me_32(*(uint32_t *)buf_pos);
238 iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
239 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
240 FFMIN(chroma_width, 40));
242 buf_pos = buf + 16 + offs3;
243 offs = le2me_32(*(uint32_t *)buf_pos);
246 iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
247 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
248 FFMIN(chroma_width, 40));
261 long split_direction;
265 /* ---------------------------------------------------------------------- */
267 #define LV1_CHECK(buf1,rle_v3,lv1,lp2) \
268 if((lv1 & 0x80) != 0) { \
279 #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \
292 #define LP2_CHECK(buf1,rle_v3,lp2) \
293 if(lp2 == 0 && rle_v3 != 0) \
301 #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
309 static void iv_Decode_Chunk(Indeo3DecodeContext *s,
310 unsigned char *cur, unsigned char *ref, int width, int height,
311 unsigned char *buf1, long fflags2, unsigned char *hdr,
312 unsigned char *buf2, int min_width_160)
314 unsigned char bit_buf;
315 unsigned long bit_pos, lv, lv1, lv2;
316 long *width_tbl, width_tbl_arr[10];
317 signed char *ref_vectors;
318 unsigned char *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
319 uint32_t *cur_lp, *ref_lp;
320 const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
321 unsigned short *correction_type_sp[2];
322 ustr_t strip_tbl[20], *strip;
323 int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
324 rle_v1, rle_v2, rle_v3;
330 width_tbl = width_tbl_arr + 1;
331 i = (width < 0 ? width + 3 : width)/4;
332 for(j = -1; j < 8; j++)
333 width_tbl[j] = i * j;
337 for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
339 strip->ypos = strip->xpos = 0;
340 for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
341 strip->height = height;
342 strip->split_direction = 0;
343 strip->split_flag = 0;
348 rle_v1 = rle_v2 = rle_v3 = 0;
350 while(strip >= strip_tbl) {
357 cmd = (bit_buf >> bit_pos) & 0x03;
361 memcpy(strip, strip-1, sizeof(ustr_t));
362 strip->split_flag = 1;
363 strip->split_direction = 0;
364 strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
366 } else if(cmd == 1) {
368 memcpy(strip, strip-1, sizeof(ustr_t));
369 strip->split_flag = 1;
370 strip->split_direction = 1;
371 strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
373 } else if(cmd == 2) {
374 if(strip->usl7 == 0) {
379 } else if(cmd == 3) {
380 if(strip->usl7 == 0) {
382 ref_vectors = (signed char*)buf2 + (*buf1 * 2);
388 cur_frm_pos = cur + width * strip->ypos + strip->xpos;
390 if((blks_width = strip->width) < 0)
393 blks_height = strip->height;
395 if(ref_vectors != NULL) {
396 ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
397 ref_vectors[1] + strip->xpos;
399 ref_frm_pos = cur_frm_pos - width_tbl[4];
408 cmd = (bit_buf >> bit_pos) & 0x03;
410 if(cmd == 0 || ref_vectors != NULL) {
411 for(lp1 = 0; lp1 < blks_width; lp1++) {
412 for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
413 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
425 if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
426 cp2 = s->ModPred + ((lv - 8) << 7);
428 for(i = 0; i < blks_width << 2; i++) {
434 if(k == 1 || k == 4) {
435 lv = (hdr[j] & 0xf) + fflags2;
436 correction_type_sp[0] = s->corrector_type + (lv << 8);
437 correction_lp[0] = correction + (lv << 8);
438 lv = (hdr[j] >> 4) + fflags2;
439 correction_lp[1] = correction + (lv << 8);
440 correction_type_sp[1] = s->corrector_type + (lv << 8);
442 correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
443 correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
444 correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
445 correction_lp[0] = correction_lp[1] = correction + (lv << 8);
450 case 0: /********** CASE 0 **********/
451 for( ; blks_height > 0; blks_height -= 4) {
452 for(lp1 = 0; lp1 < blks_width; lp1++) {
453 for(lp2 = 0; lp2 < 4; ) {
455 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
456 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
458 switch(correction_type_sp[0][k]) {
460 *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
464 res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
465 ((unsigned short *)cur_lp)[0] = le2me_16(res);
466 res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
467 ((unsigned short *)cur_lp)[1] = le2me_16(res);
473 for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
474 cur_lp[j] = ref_lp[j];
480 for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
481 cur_lp[j] = ref_lp[j];
487 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
489 if(rle_v1 == 1 || ref_vectors != NULL) {
490 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
491 cur_lp[j] = ref_lp[j];
494 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
501 LP2_CHECK(buf1,rle_v3,lp2)
503 for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
504 cur_lp[j] = ref_lp[j];
516 if(ref_vectors != NULL) {
517 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
518 cur_lp[j] = ref_lp[j];
525 lv = (lv1 & 0x7F) << 1;
528 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
531 LV1_CHECK(buf1,rle_v3,lv1,lp2)
542 cur_frm_pos += ((width - blks_width) * 4);
543 ref_frm_pos += ((width - blks_width) * 4);
548 case 3: /********** CASE 3 **********/
549 if(ref_vectors != NULL)
553 for( ; blks_height > 0; blks_height -= 8) {
554 for(lp1 = 0; lp1 < blks_width; lp1++) {
555 for(lp2 = 0; lp2 < 4; ) {
558 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
559 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
561 switch(correction_type_sp[lp2 & 0x01][k]) {
563 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
564 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
565 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
567 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
572 res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
573 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
574 res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
575 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
577 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
578 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
580 cur_lp[0] = cur_lp[width_tbl[1]];
587 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
595 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
617 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
620 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
621 cur_lp[j] = ref_lp[j];
624 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
627 rle_v2 = (*buf1) - 1;
631 LP2_CHECK(buf1,rle_v3,lp2)
633 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
639 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
641 lv = (lv1 & 0x7F) << 1;
645 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
648 LV1_CHECK(buf1,rle_v3,lv1,lp2)
659 cur_frm_pos += (((width * 2) - blks_width) * 4);
664 case 10: /********** CASE 10 **********/
665 if(ref_vectors == NULL) {
668 for( ; blks_height > 0; blks_height -= 8) {
669 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
670 for(lp2 = 0; lp2 < 4; ) {
672 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
673 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
676 if(lp2 == 0 && flag1 != 0) {
677 #ifdef WORDS_BIGENDIAN
678 lv1 = lv1 & 0xFF00FF00;
679 lv1 = (lv1 >> 8) | lv1;
680 lv2 = lv2 & 0xFF00FF00;
681 lv2 = (lv2 >> 8) | lv2;
683 lv1 = lv1 & 0x00FF00FF;
684 lv1 = (lv1 << 8) | lv1;
685 lv2 = lv2 & 0x00FF00FF;
686 lv2 = (lv2 << 8) | lv2;
690 switch(correction_type_sp[lp2 & 0x01][k]) {
692 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
693 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1);
694 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
695 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
696 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
698 cur_lp[0] = cur_lp[width_tbl[1]];
699 cur_lp[1] = cur_lp[width_tbl[1]+1];
705 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
706 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
707 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
708 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
709 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
711 cur_lp[0] = cur_lp[width_tbl[1]];
712 cur_lp[1] = cur_lp[width_tbl[1]+1];
721 for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
725 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
726 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
728 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
739 if(lp2 == 0 && flag1 != 0) {
740 for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
744 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
745 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
747 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
758 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
761 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
765 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
766 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
768 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
774 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
778 rle_v2 = (*buf1) - 1;
781 LP2_CHECK(buf1,rle_v3,lp2)
783 if(lp2 == 0 && flag1 != 0) {
784 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
788 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
789 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
791 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
816 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
818 lv = (lv1 & 0x7F) << 1;
821 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
823 LV1_CHECK(buf1,rle_v3,lv1,lp2)
834 cur_frm_pos += (((width * 2) - blks_width) * 4);
838 for( ; blks_height > 0; blks_height -= 8) {
839 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
840 for(lp2 = 0; lp2 < 4; ) {
842 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
843 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
845 switch(correction_type_sp[lp2 & 0x01][k]) {
847 lv1 = correctionloworder_lp[lp2 & 0x01][k];
848 lv2 = correctionhighorder_lp[lp2 & 0x01][k];
849 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
850 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
851 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
852 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
857 lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
858 lv2 = correctionloworder_lp[lp2 & 0x01][k];
859 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
860 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
861 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
862 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
868 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
869 cur_lp[j] = ref_lp[j];
870 cur_lp[j+1] = ref_lp[j+1];
878 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
879 cur_lp[j] = ref_lp[j];
880 cur_lp[j+1] = ref_lp[j+1];
888 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
889 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
890 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
891 ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
893 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
897 rle_v2 = (*buf1) - 1;
901 LP2_CHECK(buf1,rle_v3,lp2)
904 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
905 cur_lp[j] = ref_lp[j];
906 cur_lp[j+1] = ref_lp[j+1];
912 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
914 lv = (lv1 & 0x7F) << 1;
917 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
918 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
919 LV1_CHECK(buf1,rle_v3,lv1,lp2)
931 cur_frm_pos += (((width * 2) - blks_width) * 4);
932 ref_frm_pos += (((width * 2) - blks_width) * 4);
937 case 11: /********** CASE 11 **********/
938 if(ref_vectors == NULL)
941 for( ; blks_height > 0; blks_height -= 8) {
942 for(lp1 = 0; lp1 < blks_width; lp1++) {
943 for(lp2 = 0; lp2 < 4; ) {
945 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
946 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
948 switch(correction_type_sp[lp2 & 0x01][k]) {
950 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
951 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
956 lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
957 lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
958 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
959 ((unsigned short *)cur_lp)[0] = le2me_16(res);
960 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
961 ((unsigned short *)cur_lp)[1] = le2me_16(res);
962 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
963 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
964 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
965 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
971 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
972 cur_lp[j] = ref_lp[j];
979 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
980 cur_lp[j] = ref_lp[j];
987 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
989 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
990 cur_lp[j] = ref_lp[j];
992 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
996 rle_v2 = (*buf1) - 1;
1000 LP2_CHECK(buf1,rle_v3,lp2)
1003 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
1004 cur_lp[j] = ref_lp[j];
1009 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
1011 lv = (lv1 & 0x7F) << 1;
1014 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
1016 LV1_CHECK(buf1,rle_v3,lv1,lp2)
1028 cur_frm_pos += (((width * 2) - blks_width) * 4);
1029 ref_frm_pos += (((width * 2) - blks_width) * 4);
1038 if(strip < strip_tbl)
1041 for( ; strip >= strip_tbl; strip--) {
1042 if(strip->split_flag != 0) {
1043 strip->split_flag = 0;
1044 strip->usl7 = (strip-1)->usl7;
1046 if(strip->split_direction) {
1047 strip->xpos += strip->width;
1048 strip->width = (strip-1)->width - strip->width;
1049 if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1050 strip->width = width - strip->xpos;
1052 strip->ypos += strip->height;
1053 strip->height = (strip-1)->height - strip->height;
1061 static int indeo3_decode_init(AVCodecContext *avctx)
1063 Indeo3DecodeContext *s = avctx->priv_data;
1066 s->width = avctx->width;
1067 s->height = avctx->height;
1068 avctx->pix_fmt = PIX_FMT_YUV410P;
1069 avctx->has_b_frames = 0;
1077 static int indeo3_decode_frame(AVCodecContext *avctx,
1078 void *data, int *data_size,
1079 unsigned char *buf, int buf_size)
1081 Indeo3DecodeContext *s=avctx->priv_data;
1082 unsigned char *src, *dest;
1085 iv_decode_frame(s, buf, buf_size);
1087 if(s->frame.data[0])
1088 avctx->release_buffer(avctx, &s->frame);
1090 s->frame.reference = 0;
1091 if(avctx->get_buffer(avctx, &s->frame) < 0) {
1092 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1096 src = s->cur_frame->Ybuf;
1097 dest = s->frame.data[0];
1098 for (y = 0; y < s->height; y++) {
1099 memcpy(dest, src, s->cur_frame->y_w);
1100 src += s->cur_frame->y_w;
1101 dest += s->frame.linesize[0];
1104 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1106 src = s->cur_frame->Ubuf;
1107 dest = s->frame.data[1];
1108 for (y = 0; y < s->height / 4; y++) {
1109 memcpy(dest, src, s->cur_frame->uv_w);
1110 src += s->cur_frame->uv_w;
1111 dest += s->frame.linesize[1];
1114 src = s->cur_frame->Vbuf;
1115 dest = s->frame.data[2];
1116 for (y = 0; y < s->height / 4; y++) {
1117 memcpy(dest, src, s->cur_frame->uv_w);
1118 src += s->cur_frame->uv_w;
1119 dest += s->frame.linesize[2];
1123 *data_size=sizeof(AVFrame);
1124 *(AVFrame*)data= s->frame;
1129 static int indeo3_decode_end(AVCodecContext *avctx)
1131 Indeo3DecodeContext *s = avctx->priv_data;
1138 AVCodec indeo3_decoder = {
1142 sizeof(Indeo3DecodeContext),
1146 indeo3_decode_frame,