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 =
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 av_cold 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 const uint8_t *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 const uint8_t *hdr_pos, *buf_pos;
190 fflags1 = bytestream_get_le16(&buf_pos);
191 fflags3 = bytestream_get_le32(&buf_pos);
192 fflags2 = *buf_pos++;
194 hdr_height = bytestream_get_le16(&buf_pos);
195 hdr_width = bytestream_get_le16(&buf_pos);
197 if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
200 chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
201 chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
202 offs1 = bytestream_get_le32(&buf_pos);
203 offs2 = bytestream_get_le32(&buf_pos);
204 offs3 = bytestream_get_le32(&buf_pos);
207 if(fflags3 == 0x80) return 4;
209 if(fflags1 & 0x200) {
210 s->cur_frame = s->iv_frame + 1;
211 s->ref_frame = s->iv_frame;
213 s->cur_frame = s->iv_frame;
214 s->ref_frame = s->iv_frame + 1;
217 buf_pos = buf + 16 + offs1;
218 offs = bytestream_get_le32(&buf_pos);
220 iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
221 hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
222 FFMIN(hdr_width, 160));
224 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
227 buf_pos = buf + 16 + offs2;
228 offs = bytestream_get_le32(&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 FFMIN(chroma_width, 40));
234 buf_pos = buf + 16 + offs3;
235 offs = bytestream_get_le32(&buf_pos);
237 iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
238 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
239 FFMIN(chroma_width, 40));
252 long split_direction;
256 /* ---------------------------------------------------------------------- */
258 #define LV1_CHECK(buf1,rle_v3,lv1,lp2) \
259 if((lv1 & 0x80) != 0) { \
270 #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \
283 #define LP2_CHECK(buf1,rle_v3,lp2) \
284 if(lp2 == 0 && rle_v3 != 0) \
292 #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
300 static void iv_Decode_Chunk(Indeo3DecodeContext *s,
301 uint8_t *cur, uint8_t *ref, int width, int height,
302 const uint8_t *buf1, long fflags2, const uint8_t *hdr,
303 const uint8_t *buf2, int min_width_160)
306 unsigned long bit_pos, lv, lv1, lv2;
307 long *width_tbl, width_tbl_arr[10];
308 const signed char *ref_vectors;
309 uint8_t *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
310 uint32_t *cur_lp, *ref_lp;
311 const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
312 uint8_t *correction_type_sp[2];
313 ustr_t strip_tbl[20], *strip;
314 int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
315 rle_v1, rle_v2, rle_v3;
321 width_tbl = width_tbl_arr + 1;
322 i = (width < 0 ? width + 3 : width)/4;
323 for(j = -1; j < 8; j++)
324 width_tbl[j] = i * j;
328 for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
330 strip->ypos = strip->xpos = 0;
331 for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
332 strip->height = height;
333 strip->split_direction = 0;
334 strip->split_flag = 0;
339 rle_v1 = rle_v2 = rle_v3 = 0;
341 while(strip >= strip_tbl) {
348 cmd = (bit_buf >> bit_pos) & 0x03;
352 memcpy(strip, strip-1, sizeof(ustr_t));
353 strip->split_flag = 1;
354 strip->split_direction = 0;
355 strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
357 } else if(cmd == 1) {
359 memcpy(strip, strip-1, sizeof(ustr_t));
360 strip->split_flag = 1;
361 strip->split_direction = 1;
362 strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
364 } else if(cmd == 2) {
365 if(strip->usl7 == 0) {
370 } else if(cmd == 3) {
371 if(strip->usl7 == 0) {
373 ref_vectors = (const signed char*)buf2 + (*buf1 * 2);
379 cur_frm_pos = cur + width * strip->ypos + strip->xpos;
381 if((blks_width = strip->width) < 0)
384 blks_height = strip->height;
386 if(ref_vectors != NULL) {
387 ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
388 ref_vectors[1] + strip->xpos;
390 ref_frm_pos = cur_frm_pos - width_tbl[4];
399 cmd = (bit_buf >> bit_pos) & 0x03;
401 if(cmd == 0 || ref_vectors != NULL) {
402 for(lp1 = 0; lp1 < blks_width; lp1++) {
403 for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
404 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
416 if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
417 cp2 = s->ModPred + ((lv - 8) << 7);
419 for(i = 0; i < blks_width << 2; i++) {
425 if(k == 1 || k == 4) {
426 lv = (hdr[j] & 0xf) + fflags2;
427 correction_type_sp[0] = s->corrector_type + (lv << 8);
428 correction_lp[0] = correction + (lv << 8);
429 lv = (hdr[j] >> 4) + fflags2;
430 correction_lp[1] = correction + (lv << 8);
431 correction_type_sp[1] = s->corrector_type + (lv << 8);
433 correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
434 correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
435 correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
436 correction_lp[0] = correction_lp[1] = correction + (lv << 8);
441 case 0: /********** CASE 0 **********/
442 for( ; blks_height > 0; blks_height -= 4) {
443 for(lp1 = 0; lp1 < blks_width; lp1++) {
444 for(lp2 = 0; lp2 < 4; ) {
446 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
447 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
449 switch(correction_type_sp[0][k]) {
451 *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
455 res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
456 ((unsigned short *)cur_lp)[0] = le2me_16(res);
457 res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
458 ((unsigned short *)cur_lp)[1] = le2me_16(res);
464 for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
465 cur_lp[j] = ref_lp[j];
471 for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
472 cur_lp[j] = ref_lp[j];
478 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
480 if(rle_v1 == 1 || ref_vectors != NULL) {
481 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
482 cur_lp[j] = ref_lp[j];
485 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
492 LP2_CHECK(buf1,rle_v3,lp2)
494 for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
495 cur_lp[j] = ref_lp[j];
507 if(ref_vectors != NULL) {
508 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
509 cur_lp[j] = ref_lp[j];
516 lv = (lv1 & 0x7F) << 1;
519 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
522 LV1_CHECK(buf1,rle_v3,lv1,lp2)
533 cur_frm_pos += ((width - blks_width) * 4);
534 ref_frm_pos += ((width - blks_width) * 4);
539 case 3: /********** CASE 3 **********/
540 if(ref_vectors != NULL)
544 for( ; blks_height > 0; blks_height -= 8) {
545 for(lp1 = 0; lp1 < blks_width; lp1++) {
546 for(lp2 = 0; lp2 < 4; ) {
549 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
550 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
552 switch(correction_type_sp[lp2 & 0x01][k]) {
554 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
555 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
556 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
558 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
563 res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
564 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
565 res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
566 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
568 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
569 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
571 cur_lp[0] = cur_lp[width_tbl[1]];
578 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
586 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
608 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
611 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
612 cur_lp[j] = ref_lp[j];
615 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
618 rle_v2 = (*buf1) - 1;
622 LP2_CHECK(buf1,rle_v3,lp2)
624 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
630 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
632 lv = (lv1 & 0x7F) << 1;
636 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
639 LV1_CHECK(buf1,rle_v3,lv1,lp2)
650 cur_frm_pos += (((width * 2) - blks_width) * 4);
655 case 10: /********** CASE 10 **********/
656 if(ref_vectors == NULL) {
659 for( ; blks_height > 0; blks_height -= 8) {
660 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
661 for(lp2 = 0; lp2 < 4; ) {
663 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
664 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
667 if(lp2 == 0 && flag1 != 0) {
668 #ifdef WORDS_BIGENDIAN
669 lv1 = lv1 & 0xFF00FF00;
670 lv1 = (lv1 >> 8) | lv1;
671 lv2 = lv2 & 0xFF00FF00;
672 lv2 = (lv2 >> 8) | lv2;
674 lv1 = lv1 & 0x00FF00FF;
675 lv1 = (lv1 << 8) | lv1;
676 lv2 = lv2 & 0x00FF00FF;
677 lv2 = (lv2 << 8) | lv2;
681 switch(correction_type_sp[lp2 & 0x01][k]) {
683 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
684 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1);
685 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
686 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
687 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
689 cur_lp[0] = cur_lp[width_tbl[1]];
690 cur_lp[1] = cur_lp[width_tbl[1]+1];
696 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
697 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
698 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
699 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
700 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
702 cur_lp[0] = cur_lp[width_tbl[1]];
703 cur_lp[1] = cur_lp[width_tbl[1]+1];
712 for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
716 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
717 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
719 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
730 if(lp2 == 0 && flag1 != 0) {
731 for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
735 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
736 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
738 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
749 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
752 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
756 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
757 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
759 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
765 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
769 rle_v2 = (*buf1) - 1;
772 LP2_CHECK(buf1,rle_v3,lp2)
774 if(lp2 == 0 && flag1 != 0) {
775 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
779 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
780 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
782 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
807 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
809 lv = (lv1 & 0x7F) << 1;
812 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
814 LV1_CHECK(buf1,rle_v3,lv1,lp2)
825 cur_frm_pos += (((width * 2) - blks_width) * 4);
829 for( ; blks_height > 0; blks_height -= 8) {
830 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
831 for(lp2 = 0; lp2 < 4; ) {
833 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
834 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
836 switch(correction_type_sp[lp2 & 0x01][k]) {
838 lv1 = correctionloworder_lp[lp2 & 0x01][k];
839 lv2 = correctionhighorder_lp[lp2 & 0x01][k];
840 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
841 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
842 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
843 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
848 lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
849 lv2 = correctionloworder_lp[lp2 & 0x01][k];
850 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
851 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
852 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
853 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
859 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
860 cur_lp[j] = ref_lp[j];
861 cur_lp[j+1] = ref_lp[j+1];
869 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
870 cur_lp[j] = ref_lp[j];
871 cur_lp[j+1] = ref_lp[j+1];
879 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
880 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
881 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
882 ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
884 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
888 rle_v2 = (*buf1) - 1;
892 LP2_CHECK(buf1,rle_v3,lp2)
895 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
896 cur_lp[j] = ref_lp[j];
897 cur_lp[j+1] = ref_lp[j+1];
903 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
905 lv = (lv1 & 0x7F) << 1;
908 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
909 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
910 LV1_CHECK(buf1,rle_v3,lv1,lp2)
922 cur_frm_pos += (((width * 2) - blks_width) * 4);
923 ref_frm_pos += (((width * 2) - blks_width) * 4);
928 case 11: /********** CASE 11 **********/
929 if(ref_vectors == NULL)
932 for( ; blks_height > 0; blks_height -= 8) {
933 for(lp1 = 0; lp1 < blks_width; lp1++) {
934 for(lp2 = 0; lp2 < 4; ) {
936 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
937 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
939 switch(correction_type_sp[lp2 & 0x01][k]) {
941 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
942 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
947 lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
948 lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
949 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
950 ((unsigned short *)cur_lp)[0] = le2me_16(res);
951 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
952 ((unsigned short *)cur_lp)[1] = le2me_16(res);
953 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
954 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
955 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
956 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
962 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
963 cur_lp[j] = ref_lp[j];
970 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
971 cur_lp[j] = ref_lp[j];
978 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
980 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
981 cur_lp[j] = ref_lp[j];
983 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
987 rle_v2 = (*buf1) - 1;
991 LP2_CHECK(buf1,rle_v3,lp2)
994 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
995 cur_lp[j] = ref_lp[j];
1000 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
1002 lv = (lv1 & 0x7F) << 1;
1005 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
1007 LV1_CHECK(buf1,rle_v3,lv1,lp2)
1019 cur_frm_pos += (((width * 2) - blks_width) * 4);
1020 ref_frm_pos += (((width * 2) - blks_width) * 4);
1029 if(strip < strip_tbl)
1032 for( ; strip >= strip_tbl; strip--) {
1033 if(strip->split_flag != 0) {
1034 strip->split_flag = 0;
1035 strip->usl7 = (strip-1)->usl7;
1037 if(strip->split_direction) {
1038 strip->xpos += strip->width;
1039 strip->width = (strip-1)->width - strip->width;
1040 if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1041 strip->width = width - strip->xpos;
1043 strip->ypos += strip->height;
1044 strip->height = (strip-1)->height - strip->height;
1052 static av_cold int indeo3_decode_init(AVCodecContext *avctx)
1054 Indeo3DecodeContext *s = avctx->priv_data;
1057 s->width = avctx->width;
1058 s->height = avctx->height;
1059 avctx->pix_fmt = PIX_FMT_YUV410P;
1067 static int indeo3_decode_frame(AVCodecContext *avctx,
1068 void *data, int *data_size,
1069 const uint8_t *buf, int buf_size)
1071 Indeo3DecodeContext *s=avctx->priv_data;
1072 uint8_t *src, *dest;
1075 iv_decode_frame(s, buf, buf_size);
1077 if(s->frame.data[0])
1078 avctx->release_buffer(avctx, &s->frame);
1080 s->frame.reference = 0;
1081 if(avctx->get_buffer(avctx, &s->frame) < 0) {
1082 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1086 src = s->cur_frame->Ybuf;
1087 dest = s->frame.data[0];
1088 for (y = 0; y < s->height; y++) {
1089 memcpy(dest, src, s->cur_frame->y_w);
1090 src += s->cur_frame->y_w;
1091 dest += s->frame.linesize[0];
1094 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1096 src = s->cur_frame->Ubuf;
1097 dest = s->frame.data[1];
1098 for (y = 0; y < s->height / 4; y++) {
1099 memcpy(dest, src, s->cur_frame->uv_w);
1100 src += s->cur_frame->uv_w;
1101 dest += s->frame.linesize[1];
1104 src = s->cur_frame->Vbuf;
1105 dest = s->frame.data[2];
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[2];
1113 *data_size=sizeof(AVFrame);
1114 *(AVFrame*)data= s->frame;
1119 static av_cold int indeo3_decode_end(AVCodecContext *avctx)
1121 Indeo3DecodeContext *s = avctx->priv_data;
1128 AVCodec indeo3_decoder = {
1132 sizeof(Indeo3DecodeContext),
1136 indeo3_decode_frame,
1139 .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo 3"),