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 "bytestream.h"
31 #include "indeo3data.h"
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;
54 uint8_t *corrector_type;
55 } Indeo3DecodeContext;
57 static const uint8_t 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 const uint8_t corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
65 static av_cold void build_modpred(Indeo3DecodeContext *s)
69 s->ModPred = 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 :
75 i == 120 ? 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 = av_malloc(24 * 256);
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] ? 1 :
89 j < 248 || (i == 16 && j == 248) ? 0 :
90 corrector_type_2[j - 248];
95 static void iv_Decode_Chunk(Indeo3DecodeContext *s, uint8_t *cur,
96 uint8_t *ref, int width, int height, const uint8_t *buf1,
97 long fflags2, const uint8_t *hdr,
98 const uint8_t *buf2, int min_width_160);
100 /* ---------------------------------------------------------------------- */
101 static av_cold 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 = av_malloc(bufsize)))
126 s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
127 s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
128 s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
129 s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
130 s->iv_frame[0].the_buf_size = bufsize;
132 s->iv_frame[0].Ybuf = s->iv_frame[0].the_buf + luma_width;
133 i = luma_pixels + luma_width * 2;
134 s->iv_frame[1].Ybuf = s->iv_frame[0].the_buf + i;
135 i += (luma_pixels + luma_width);
136 s->iv_frame[0].Ubuf = s->iv_frame[0].the_buf + i;
137 i += (chroma_pixels + chroma_width);
138 s->iv_frame[1].Ubuf = s->iv_frame[0].the_buf + i;
139 i += (chroma_pixels + chroma_width);
140 s->iv_frame[0].Vbuf = s->iv_frame[0].the_buf + i;
141 i += (chroma_pixels + chroma_width);
142 s->iv_frame[1].Vbuf = s->iv_frame[0].the_buf + i;
144 for(i = 1; i <= luma_width; i++)
145 s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] =
146 s->iv_frame[0].Ubuf[-i] = 0x80;
148 for(i = 1; i <= chroma_width; i++) {
149 s->iv_frame[1].Ubuf[-i] = 0x80;
150 s->iv_frame[0].Vbuf[-i] = 0x80;
151 s->iv_frame[1].Vbuf[-i] = 0x80;
152 s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
156 /* ---------------------------------------------------------------------- */
157 static av_cold void iv_free_func(Indeo3DecodeContext *s)
161 for(i = 0 ; i < 2 ; i++) {
162 if(s->iv_frame[i].the_buf != NULL)
163 av_free(s->iv_frame[i].the_buf);
164 s->iv_frame[i].Ybuf = s->iv_frame[i].Ubuf =
165 s->iv_frame[i].Vbuf = NULL;
166 s->iv_frame[i].the_buf = NULL;
167 s->iv_frame[i].the_buf_size = 0;
168 s->iv_frame[i].y_w = s->iv_frame[i].y_h = 0;
169 s->iv_frame[i].uv_w = s->iv_frame[i].uv_h = 0;
173 av_free(s->corrector_type);
176 /* ---------------------------------------------------------------------- */
177 static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
178 const uint8_t *buf, int buf_size)
180 unsigned int hdr_width, hdr_height,
181 chroma_width, chroma_height;
182 unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
183 const uint8_t *hdr_pos, *buf_pos;
188 fflags1 = bytestream_get_le16(&buf_pos);
189 fflags3 = bytestream_get_le32(&buf_pos);
190 fflags2 = *buf_pos++;
192 hdr_height = bytestream_get_le16(&buf_pos);
193 hdr_width = bytestream_get_le16(&buf_pos);
195 if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
198 chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
199 chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
200 offs1 = bytestream_get_le32(&buf_pos);
201 offs2 = bytestream_get_le32(&buf_pos);
202 offs3 = bytestream_get_le32(&buf_pos);
205 if(fflags3 == 0x80) return 4;
207 if(fflags1 & 0x200) {
208 s->cur_frame = s->iv_frame + 1;
209 s->ref_frame = s->iv_frame;
211 s->cur_frame = s->iv_frame;
212 s->ref_frame = s->iv_frame + 1;
215 buf_pos = buf + 16 + offs1;
216 offs = bytestream_get_le32(&buf_pos);
218 iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
219 hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
220 FFMIN(hdr_width, 160));
222 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
225 buf_pos = buf + 16 + offs2;
226 offs = bytestream_get_le32(&buf_pos);
228 iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
229 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
230 FFMIN(chroma_width, 40));
232 buf_pos = buf + 16 + offs3;
233 offs = bytestream_get_le32(&buf_pos);
235 iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
236 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
237 FFMIN(chroma_width, 40));
250 long split_direction;
254 /* ---------------------------------------------------------------------- */
256 #define LV1_CHECK(buf1,rle_v3,lv1,lp2) \
257 if((lv1 & 0x80) != 0) { \
268 #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \
281 #define LP2_CHECK(buf1,rle_v3,lp2) \
282 if(lp2 == 0 && rle_v3 != 0) \
290 #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
298 static void iv_Decode_Chunk(Indeo3DecodeContext *s,
299 uint8_t *cur, uint8_t *ref, int width, int height,
300 const uint8_t *buf1, long fflags2, const uint8_t *hdr,
301 const uint8_t *buf2, int min_width_160)
304 unsigned long bit_pos, lv, lv1, lv2;
305 long *width_tbl, width_tbl_arr[10];
306 const signed char *ref_vectors;
307 uint8_t *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
308 uint32_t *cur_lp, *ref_lp;
309 const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
310 uint8_t *correction_type_sp[2];
311 ustr_t strip_tbl[20], *strip;
312 int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
313 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 = (const signed char*)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 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)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++) {
423 if(k == 1 || k == 4) {
424 lv = (hdr[j] & 0xf) + fflags2;
425 correction_type_sp[0] = s->corrector_type + (lv << 8);
426 correction_lp[0] = correction + (lv << 8);
427 lv = (hdr[j] >> 4) + fflags2;
428 correction_lp[1] = correction + (lv << 8);
429 correction_type_sp[1] = s->corrector_type + (lv << 8);
431 correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
432 correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
433 correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
434 correction_lp[0] = correction_lp[1] = correction + (lv << 8);
439 case 0: /********** CASE 0 **********/
440 for( ; blks_height > 0; blks_height -= 4) {
441 for(lp1 = 0; lp1 < blks_width; lp1++) {
442 for(lp2 = 0; lp2 < 4; ) {
444 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
445 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
447 switch(correction_type_sp[0][k]) {
449 *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
453 res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
454 ((unsigned short *)cur_lp)[0] = le2me_16(res);
455 res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
456 ((unsigned short *)cur_lp)[1] = le2me_16(res);
462 for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
463 cur_lp[j] = ref_lp[j];
469 for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
470 cur_lp[j] = ref_lp[j];
476 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
478 if(rle_v1 == 1 || ref_vectors != NULL) {
479 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
480 cur_lp[j] = ref_lp[j];
483 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
490 LP2_CHECK(buf1,rle_v3,lp2)
492 for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
493 cur_lp[j] = ref_lp[j];
505 if(ref_vectors != NULL) {
506 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
507 cur_lp[j] = ref_lp[j];
514 lv = (lv1 & 0x7F) << 1;
517 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
520 LV1_CHECK(buf1,rle_v3,lv1,lp2)
531 cur_frm_pos += ((width - blks_width) * 4);
532 ref_frm_pos += ((width - blks_width) * 4);
537 case 3: /********** CASE 3 **********/
538 if(ref_vectors != NULL)
542 for( ; blks_height > 0; blks_height -= 8) {
543 for(lp1 = 0; lp1 < blks_width; lp1++) {
544 for(lp2 = 0; lp2 < 4; ) {
547 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
548 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
550 switch(correction_type_sp[lp2 & 0x01][k]) {
552 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
553 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
554 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
556 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
561 res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
562 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
563 res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
564 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
566 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
567 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
569 cur_lp[0] = cur_lp[width_tbl[1]];
576 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
584 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
606 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
609 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
610 cur_lp[j] = ref_lp[j];
613 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
616 rle_v2 = (*buf1) - 1;
620 LP2_CHECK(buf1,rle_v3,lp2)
622 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
628 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
630 lv = (lv1 & 0x7F) << 1;
634 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
637 LV1_CHECK(buf1,rle_v3,lv1,lp2)
648 cur_frm_pos += (((width * 2) - blks_width) * 4);
653 case 10: /********** CASE 10 **********/
654 if(ref_vectors == NULL) {
657 for( ; blks_height > 0; blks_height -= 8) {
658 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
659 for(lp2 = 0; lp2 < 4; ) {
661 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
662 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
665 if(lp2 == 0 && flag1 != 0) {
666 #ifdef WORDS_BIGENDIAN
667 lv1 = lv1 & 0xFF00FF00;
668 lv1 = (lv1 >> 8) | lv1;
669 lv2 = lv2 & 0xFF00FF00;
670 lv2 = (lv2 >> 8) | lv2;
672 lv1 = lv1 & 0x00FF00FF;
673 lv1 = (lv1 << 8) | lv1;
674 lv2 = lv2 & 0x00FF00FF;
675 lv2 = (lv2 << 8) | lv2;
679 switch(correction_type_sp[lp2 & 0x01][k]) {
681 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
682 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_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];
694 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
695 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
696 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
697 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
698 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
700 cur_lp[0] = cur_lp[width_tbl[1]];
701 cur_lp[1] = cur_lp[width_tbl[1]+1];
710 for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
714 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
715 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
717 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
728 if(lp2 == 0 && flag1 != 0) {
729 for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
733 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
734 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
736 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
747 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
750 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
754 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
755 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
757 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
763 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
767 rle_v2 = (*buf1) - 1;
770 LP2_CHECK(buf1,rle_v3,lp2)
772 if(lp2 == 0 && flag1 != 0) {
773 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
777 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
778 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
780 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
805 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
807 lv = (lv1 & 0x7F) << 1;
810 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
812 LV1_CHECK(buf1,rle_v3,lv1,lp2)
823 cur_frm_pos += (((width * 2) - blks_width) * 4);
827 for( ; blks_height > 0; blks_height -= 8) {
828 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
829 for(lp2 = 0; lp2 < 4; ) {
831 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
832 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
834 switch(correction_type_sp[lp2 & 0x01][k]) {
836 lv1 = correctionloworder_lp[lp2 & 0x01][k];
837 lv2 = correctionhighorder_lp[lp2 & 0x01][k];
838 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
839 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
840 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
841 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
846 lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
847 lv2 = correctionloworder_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);
857 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
858 cur_lp[j] = ref_lp[j];
859 cur_lp[j+1] = ref_lp[j+1];
867 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
868 cur_lp[j] = ref_lp[j];
869 cur_lp[j+1] = ref_lp[j+1];
877 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
878 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
879 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
880 ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
882 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
886 rle_v2 = (*buf1) - 1;
890 LP2_CHECK(buf1,rle_v3,lp2)
893 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
894 cur_lp[j] = ref_lp[j];
895 cur_lp[j+1] = ref_lp[j+1];
901 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
903 lv = (lv1 & 0x7F) << 1;
906 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
907 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
908 LV1_CHECK(buf1,rle_v3,lv1,lp2)
920 cur_frm_pos += (((width * 2) - blks_width) * 4);
921 ref_frm_pos += (((width * 2) - blks_width) * 4);
926 case 11: /********** CASE 11 **********/
927 if(ref_vectors == NULL)
930 for( ; blks_height > 0; blks_height -= 8) {
931 for(lp1 = 0; lp1 < blks_width; lp1++) {
932 for(lp2 = 0; lp2 < 4; ) {
934 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
935 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
937 switch(correction_type_sp[lp2 & 0x01][k]) {
939 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
940 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
945 lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
946 lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
947 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
948 ((unsigned short *)cur_lp)[0] = le2me_16(res);
949 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
950 ((unsigned short *)cur_lp)[1] = le2me_16(res);
951 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
952 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
953 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
954 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
960 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
961 cur_lp[j] = ref_lp[j];
968 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
969 cur_lp[j] = ref_lp[j];
976 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
978 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
979 cur_lp[j] = ref_lp[j];
981 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
985 rle_v2 = (*buf1) - 1;
989 LP2_CHECK(buf1,rle_v3,lp2)
992 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
993 cur_lp[j] = ref_lp[j];
998 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
1000 lv = (lv1 & 0x7F) << 1;
1003 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
1005 LV1_CHECK(buf1,rle_v3,lv1,lp2)
1017 cur_frm_pos += (((width * 2) - blks_width) * 4);
1018 ref_frm_pos += (((width * 2) - blks_width) * 4);
1027 if(strip < strip_tbl)
1030 for( ; strip >= strip_tbl; strip--) {
1031 if(strip->split_flag != 0) {
1032 strip->split_flag = 0;
1033 strip->usl7 = (strip-1)->usl7;
1035 if(strip->split_direction) {
1036 strip->xpos += strip->width;
1037 strip->width = (strip-1)->width - strip->width;
1038 if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1039 strip->width = width - strip->xpos;
1041 strip->ypos += strip->height;
1042 strip->height = (strip-1)->height - strip->height;
1050 static av_cold int indeo3_decode_init(AVCodecContext *avctx)
1052 Indeo3DecodeContext *s = avctx->priv_data;
1055 s->width = avctx->width;
1056 s->height = avctx->height;
1057 avctx->pix_fmt = PIX_FMT_YUV410P;
1065 static int indeo3_decode_frame(AVCodecContext *avctx,
1066 void *data, int *data_size,
1067 const uint8_t *buf, int buf_size)
1069 Indeo3DecodeContext *s=avctx->priv_data;
1070 uint8_t *src, *dest;
1073 iv_decode_frame(s, buf, buf_size);
1075 if(s->frame.data[0])
1076 avctx->release_buffer(avctx, &s->frame);
1078 s->frame.reference = 0;
1079 if(avctx->get_buffer(avctx, &s->frame) < 0) {
1080 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1084 src = s->cur_frame->Ybuf;
1085 dest = s->frame.data[0];
1086 for (y = 0; y < s->height; y++) {
1087 memcpy(dest, src, s->cur_frame->y_w);
1088 src += s->cur_frame->y_w;
1089 dest += s->frame.linesize[0];
1092 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1094 src = s->cur_frame->Ubuf;
1095 dest = s->frame.data[1];
1096 for (y = 0; y < s->height / 4; y++) {
1097 memcpy(dest, src, s->cur_frame->uv_w);
1098 src += s->cur_frame->uv_w;
1099 dest += s->frame.linesize[1];
1102 src = s->cur_frame->Vbuf;
1103 dest = s->frame.data[2];
1104 for (y = 0; y < s->height / 4; y++) {
1105 memcpy(dest, src, s->cur_frame->uv_w);
1106 src += s->cur_frame->uv_w;
1107 dest += s->frame.linesize[2];
1111 *data_size=sizeof(AVFrame);
1112 *(AVFrame*)data= s->frame;
1117 static av_cold int indeo3_decode_end(AVCodecContext *avctx)
1119 Indeo3DecodeContext *s = avctx->priv_data;
1126 AVCodec indeo3_decoder = {
1130 sizeof(Indeo3DecodeContext),
1134 indeo3_decode_frame,
1137 .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo 3"),