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 int build_modpred(Indeo3DecodeContext *s)
69 if (!(s->ModPred = av_malloc(8 * 128)))
70 return AVERROR(ENOMEM);
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 :
76 i == 120 ? 236 : 2*(i + 2 - ((i + 1) % 3));
77 s->ModPred[i+2*128] = i > 125 ? 248 : 2*(i + 2 - ((i + 2) % 4));
78 s->ModPred[i+3*128] = 2*(i + 1 - ((i - 3) % 5));
79 s->ModPred[i+4*128] = i == 8 ? 20 : 2*(i + 1 - ((i - 3) % 6));
80 s->ModPred[i+5*128] = 2*(i + 4 - ((i + 3) % 7));
81 s->ModPred[i+6*128] = i > 123 ? 240 : 2*(i + 4 - ((i + 4) % 8));
82 s->ModPred[i+7*128] = 2*(i + 5 - ((i + 4) % 9));
85 if (!(s->corrector_type = av_malloc(24 * 256)))
86 return AVERROR(ENOMEM);
88 for (i=0; i < 24; ++i) {
89 for (j=0; j < 256; ++j) {
90 s->corrector_type[i*256+j] = j < corrector_type_0[i] ? 1 :
91 j < 248 || (i == 16 && j == 248) ? 0 :
92 corrector_type_2[j - 248];
99 static void iv_Decode_Chunk(Indeo3DecodeContext *s, uint8_t *cur,
100 uint8_t *ref, int width, int height, const uint8_t *buf1,
101 long fflags2, const uint8_t *hdr,
102 const uint8_t *buf2, int min_width_160);
104 /* ---------------------------------------------------------------------- */
105 static av_cold int iv_alloc_frames(Indeo3DecodeContext *s)
107 int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,
109 unsigned int bufsize;
111 luma_width = (s->width + 3) & (~3);
112 luma_height = (s->height + 3) & (~3);
113 chroma_width = ((luma_width >> 2) + 3) & (~3);
114 chroma_height = ((luma_height>> 2) + 3) & (~3);
115 luma_pixels = luma_width * luma_height;
116 chroma_pixels = chroma_width * chroma_height;
118 bufsize = luma_pixels * 2 + luma_width * 3 +
119 (chroma_pixels + chroma_width) * 4;
121 if(!(s->iv_frame[0].the_buf = av_malloc(bufsize)))
122 return AVERROR(ENOMEM);
123 s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
124 s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
125 s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
126 s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
127 s->iv_frame[0].the_buf_size = bufsize;
129 s->iv_frame[0].Ybuf = s->iv_frame[0].the_buf + luma_width;
130 i = luma_pixels + luma_width * 2;
131 s->iv_frame[1].Ybuf = s->iv_frame[0].the_buf + i;
132 i += (luma_pixels + luma_width);
133 s->iv_frame[0].Ubuf = s->iv_frame[0].the_buf + i;
134 i += (chroma_pixels + chroma_width);
135 s->iv_frame[1].Ubuf = s->iv_frame[0].the_buf + i;
136 i += (chroma_pixels + chroma_width);
137 s->iv_frame[0].Vbuf = s->iv_frame[0].the_buf + i;
138 i += (chroma_pixels + chroma_width);
139 s->iv_frame[1].Vbuf = s->iv_frame[0].the_buf + i;
141 for(i = 1; i <= luma_width; i++)
142 s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] =
143 s->iv_frame[0].Ubuf[-i] = 0x80;
145 for(i = 1; i <= chroma_width; i++) {
146 s->iv_frame[1].Ubuf[-i] = 0x80;
147 s->iv_frame[0].Vbuf[-i] = 0x80;
148 s->iv_frame[1].Vbuf[-i] = 0x80;
149 s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
155 /* ---------------------------------------------------------------------- */
156 static av_cold void iv_free_func(Indeo3DecodeContext *s)
160 for(i = 0 ; i < 2 ; i++) {
161 if(s->iv_frame[i].the_buf != NULL)
162 av_free(s->iv_frame[i].the_buf);
163 s->iv_frame[i].Ybuf = s->iv_frame[i].Ubuf =
164 s->iv_frame[i].Vbuf = NULL;
165 s->iv_frame[i].the_buf = NULL;
166 s->iv_frame[i].the_buf_size = 0;
167 s->iv_frame[i].y_w = s->iv_frame[i].y_h = 0;
168 s->iv_frame[i].uv_w = s->iv_frame[i].uv_h = 0;
172 av_free(s->corrector_type);
175 /* ---------------------------------------------------------------------- */
176 static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
177 const uint8_t *buf, int buf_size)
179 unsigned int hdr_width, hdr_height,
180 chroma_width, chroma_height;
181 unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
182 const uint8_t *hdr_pos, *buf_pos;
187 fflags1 = bytestream_get_le16(&buf_pos);
188 fflags3 = bytestream_get_le32(&buf_pos);
189 fflags2 = *buf_pos++;
191 hdr_height = bytestream_get_le16(&buf_pos);
192 hdr_width = bytestream_get_le16(&buf_pos);
194 if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
197 chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
198 chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
199 offs1 = bytestream_get_le32(&buf_pos);
200 offs2 = bytestream_get_le32(&buf_pos);
201 offs3 = bytestream_get_le32(&buf_pos);
204 if(fflags3 == 0x80) return 4;
206 if(fflags1 & 0x200) {
207 s->cur_frame = s->iv_frame + 1;
208 s->ref_frame = s->iv_frame;
210 s->cur_frame = s->iv_frame;
211 s->ref_frame = s->iv_frame + 1;
214 buf_pos = buf + 16 + offs1;
215 offs = bytestream_get_le32(&buf_pos);
217 iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
218 hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
219 FFMIN(hdr_width, 160));
221 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
224 buf_pos = buf + 16 + offs2;
225 offs = bytestream_get_le32(&buf_pos);
227 iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
228 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
229 FFMIN(chroma_width, 40));
231 buf_pos = buf + 16 + offs3;
232 offs = bytestream_get_le32(&buf_pos);
234 iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
235 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
236 FFMIN(chroma_width, 40));
249 long split_direction;
253 /* ---------------------------------------------------------------------- */
255 #define LV1_CHECK(buf1,rle_v3,lv1,lp2) \
256 if((lv1 & 0x80) != 0) { \
267 #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \
280 #define LP2_CHECK(buf1,rle_v3,lp2) \
281 if(lp2 == 0 && rle_v3 != 0) \
289 #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
297 static void iv_Decode_Chunk(Indeo3DecodeContext *s,
298 uint8_t *cur, uint8_t *ref, int width, int height,
299 const uint8_t *buf1, long fflags2, const uint8_t *hdr,
300 const uint8_t *buf2, int min_width_160)
303 unsigned long bit_pos, lv, lv1, lv2;
304 long *width_tbl, width_tbl_arr[10];
305 const signed char *ref_vectors;
306 uint8_t *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
307 uint32_t *cur_lp, *ref_lp;
308 const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
309 uint8_t *correction_type_sp[2];
310 ustr_t strip_tbl[20], *strip;
311 int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
312 rle_v1, rle_v2, rle_v3;
318 width_tbl = width_tbl_arr + 1;
319 i = (width < 0 ? width + 3 : width)/4;
320 for(j = -1; j < 8; j++)
321 width_tbl[j] = i * j;
325 for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
327 strip->ypos = strip->xpos = 0;
328 for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
329 strip->height = height;
330 strip->split_direction = 0;
331 strip->split_flag = 0;
336 rle_v1 = rle_v2 = rle_v3 = 0;
338 while(strip >= strip_tbl) {
345 cmd = (bit_buf >> bit_pos) & 0x03;
349 memcpy(strip, strip-1, sizeof(ustr_t));
350 strip->split_flag = 1;
351 strip->split_direction = 0;
352 strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
354 } else if(cmd == 1) {
356 memcpy(strip, strip-1, sizeof(ustr_t));
357 strip->split_flag = 1;
358 strip->split_direction = 1;
359 strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
361 } else if(cmd == 2) {
362 if(strip->usl7 == 0) {
367 } else if(cmd == 3) {
368 if(strip->usl7 == 0) {
370 ref_vectors = (const signed char*)buf2 + (*buf1 * 2);
376 cur_frm_pos = cur + width * strip->ypos + strip->xpos;
378 if((blks_width = strip->width) < 0)
381 blks_height = strip->height;
383 if(ref_vectors != NULL) {
384 ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
385 ref_vectors[1] + strip->xpos;
387 ref_frm_pos = cur_frm_pos - width_tbl[4];
396 cmd = (bit_buf >> bit_pos) & 0x03;
398 if(cmd == 0 || ref_vectors != NULL) {
399 for(lp1 = 0; lp1 < blks_width; lp1++) {
400 for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
401 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
413 if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
414 cp2 = s->ModPred + ((lv - 8) << 7);
416 for(i = 0; i < blks_width << 2; i++) {
422 if(k == 1 || k == 4) {
423 lv = (hdr[j] & 0xf) + fflags2;
424 correction_type_sp[0] = s->corrector_type + (lv << 8);
425 correction_lp[0] = correction + (lv << 8);
426 lv = (hdr[j] >> 4) + fflags2;
427 correction_lp[1] = correction + (lv << 8);
428 correction_type_sp[1] = s->corrector_type + (lv << 8);
430 correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
431 correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
432 correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
433 correction_lp[0] = correction_lp[1] = correction + (lv << 8);
438 case 0: /********** CASE 0 **********/
439 for( ; blks_height > 0; blks_height -= 4) {
440 for(lp1 = 0; lp1 < blks_width; lp1++) {
441 for(lp2 = 0; lp2 < 4; ) {
443 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
444 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
446 switch(correction_type_sp[0][k]) {
448 *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
452 res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
453 ((unsigned short *)cur_lp)[0] = le2me_16(res);
454 res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
455 ((unsigned short *)cur_lp)[1] = le2me_16(res);
461 for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
462 cur_lp[j] = ref_lp[j];
468 for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
469 cur_lp[j] = ref_lp[j];
475 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
477 if(rle_v1 == 1 || ref_vectors != NULL) {
478 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
479 cur_lp[j] = ref_lp[j];
482 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
489 LP2_CHECK(buf1,rle_v3,lp2)
491 for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
492 cur_lp[j] = ref_lp[j];
504 if(ref_vectors != NULL) {
505 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
506 cur_lp[j] = ref_lp[j];
513 lv = (lv1 & 0x7F) << 1;
516 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
519 LV1_CHECK(buf1,rle_v3,lv1,lp2)
530 cur_frm_pos += ((width - blks_width) * 4);
531 ref_frm_pos += ((width - blks_width) * 4);
536 case 3: /********** CASE 3 **********/
537 if(ref_vectors != NULL)
541 for( ; blks_height > 0; blks_height -= 8) {
542 for(lp1 = 0; lp1 < blks_width; lp1++) {
543 for(lp2 = 0; lp2 < 4; ) {
546 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
547 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
549 switch(correction_type_sp[lp2 & 0x01][k]) {
551 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
552 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
553 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
555 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
560 res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
561 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
562 res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
563 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
565 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
566 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
568 cur_lp[0] = cur_lp[width_tbl[1]];
575 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
583 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
605 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
608 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
609 cur_lp[j] = ref_lp[j];
612 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
615 rle_v2 = (*buf1) - 1;
619 LP2_CHECK(buf1,rle_v3,lp2)
621 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
627 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
629 lv = (lv1 & 0x7F) << 1;
633 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
636 LV1_CHECK(buf1,rle_v3,lv1,lp2)
647 cur_frm_pos += (((width * 2) - blks_width) * 4);
652 case 10: /********** CASE 10 **********/
653 if(ref_vectors == NULL) {
656 for( ; blks_height > 0; blks_height -= 8) {
657 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
658 for(lp2 = 0; lp2 < 4; ) {
660 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
661 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
664 if(lp2 == 0 && flag1 != 0) {
665 #ifdef WORDS_BIGENDIAN
666 lv1 = lv1 & 0xFF00FF00;
667 lv1 = (lv1 >> 8) | lv1;
668 lv2 = lv2 & 0xFF00FF00;
669 lv2 = (lv2 >> 8) | lv2;
671 lv1 = lv1 & 0x00FF00FF;
672 lv1 = (lv1 << 8) | lv1;
673 lv2 = lv2 & 0x00FF00FF;
674 lv2 = (lv2 << 8) | lv2;
678 switch(correction_type_sp[lp2 & 0x01][k]) {
680 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
681 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1);
682 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
683 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
684 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
686 cur_lp[0] = cur_lp[width_tbl[1]];
687 cur_lp[1] = cur_lp[width_tbl[1]+1];
693 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
694 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
695 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
696 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
697 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
699 cur_lp[0] = cur_lp[width_tbl[1]];
700 cur_lp[1] = cur_lp[width_tbl[1]+1];
709 for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
713 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
714 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
716 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
727 if(lp2 == 0 && flag1 != 0) {
728 for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
732 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
733 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
735 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
746 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
749 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
753 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
754 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
756 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
762 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
766 rle_v2 = (*buf1) - 1;
769 LP2_CHECK(buf1,rle_v3,lp2)
771 if(lp2 == 0 && flag1 != 0) {
772 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
776 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
777 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
779 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
804 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
806 lv = (lv1 & 0x7F) << 1;
809 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
811 LV1_CHECK(buf1,rle_v3,lv1,lp2)
822 cur_frm_pos += (((width * 2) - blks_width) * 4);
826 for( ; blks_height > 0; blks_height -= 8) {
827 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
828 for(lp2 = 0; lp2 < 4; ) {
830 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
831 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
833 switch(correction_type_sp[lp2 & 0x01][k]) {
835 lv1 = correctionloworder_lp[lp2 & 0x01][k];
836 lv2 = correctionhighorder_lp[lp2 & 0x01][k];
837 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
838 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
839 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
840 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
845 lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
846 lv2 = correctionloworder_lp[lp2 & 0x01][k];
847 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
848 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
849 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
850 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
856 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
857 cur_lp[j] = ref_lp[j];
858 cur_lp[j+1] = ref_lp[j+1];
866 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
867 cur_lp[j] = ref_lp[j];
868 cur_lp[j+1] = ref_lp[j+1];
876 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
877 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
878 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
879 ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
881 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
885 rle_v2 = (*buf1) - 1;
889 LP2_CHECK(buf1,rle_v3,lp2)
892 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
893 cur_lp[j] = ref_lp[j];
894 cur_lp[j+1] = ref_lp[j+1];
900 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
902 lv = (lv1 & 0x7F) << 1;
905 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
906 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
907 LV1_CHECK(buf1,rle_v3,lv1,lp2)
919 cur_frm_pos += (((width * 2) - blks_width) * 4);
920 ref_frm_pos += (((width * 2) - blks_width) * 4);
925 case 11: /********** CASE 11 **********/
926 if(ref_vectors == NULL)
929 for( ; blks_height > 0; blks_height -= 8) {
930 for(lp1 = 0; lp1 < blks_width; lp1++) {
931 for(lp2 = 0; lp2 < 4; ) {
933 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
934 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
936 switch(correction_type_sp[lp2 & 0x01][k]) {
938 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
939 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
944 lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
945 lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
946 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
947 ((unsigned short *)cur_lp)[0] = le2me_16(res);
948 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
949 ((unsigned short *)cur_lp)[1] = le2me_16(res);
950 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
951 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
952 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
953 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
959 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
960 cur_lp[j] = ref_lp[j];
967 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
968 cur_lp[j] = ref_lp[j];
975 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
977 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
978 cur_lp[j] = ref_lp[j];
980 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
984 rle_v2 = (*buf1) - 1;
988 LP2_CHECK(buf1,rle_v3,lp2)
991 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
992 cur_lp[j] = ref_lp[j];
997 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
999 lv = (lv1 & 0x7F) << 1;
1002 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
1004 LV1_CHECK(buf1,rle_v3,lv1,lp2)
1016 cur_frm_pos += (((width * 2) - blks_width) * 4);
1017 ref_frm_pos += (((width * 2) - blks_width) * 4);
1026 if(strip < strip_tbl)
1029 for( ; strip >= strip_tbl; strip--) {
1030 if(strip->split_flag != 0) {
1031 strip->split_flag = 0;
1032 strip->usl7 = (strip-1)->usl7;
1034 if(strip->split_direction) {
1035 strip->xpos += strip->width;
1036 strip->width = (strip-1)->width - strip->width;
1037 if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1038 strip->width = width - strip->xpos;
1040 strip->ypos += strip->height;
1041 strip->height = (strip-1)->height - strip->height;
1049 static av_cold int indeo3_decode_init(AVCodecContext *avctx)
1051 Indeo3DecodeContext *s = avctx->priv_data;
1055 s->width = avctx->width;
1056 s->height = avctx->height;
1057 avctx->pix_fmt = PIX_FMT_YUV410P;
1059 if (!(ret = build_modpred(s)))
1060 ret = iv_alloc_frames(s);
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"),