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"
38 unsigned int the_buf_size;
39 unsigned short y_w, y_h;
40 unsigned short uv_w, uv_h;
43 typedef struct Indeo3DecodeContext {
44 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->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->buf + luma_width;
130 i = luma_pixels + luma_width * 2;
131 s->iv_frame[1].Ybuf = s->buf + i;
132 i += (luma_pixels + luma_width);
133 s->iv_frame[0].Ubuf = s->buf + i;
134 i += (chroma_pixels + chroma_width);
135 s->iv_frame[1].Ubuf = s->buf + i;
136 i += (chroma_pixels + chroma_width);
137 s->iv_frame[0].Vbuf = s->buf + i;
138 i += (chroma_pixels + chroma_width);
139 s->iv_frame[1].Vbuf = s->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 av_free(s->corrector_type);
163 /* ---------------------------------------------------------------------- */
164 static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
165 const uint8_t *buf, int buf_size)
167 unsigned int hdr_width, hdr_height,
168 chroma_width, chroma_height;
169 unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
170 const uint8_t *hdr_pos, *buf_pos;
175 fflags1 = bytestream_get_le16(&buf_pos);
176 fflags3 = bytestream_get_le32(&buf_pos);
177 fflags2 = *buf_pos++;
179 hdr_height = bytestream_get_le16(&buf_pos);
180 hdr_width = bytestream_get_le16(&buf_pos);
182 if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
185 chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
186 chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
187 offs1 = bytestream_get_le32(&buf_pos);
188 offs2 = bytestream_get_le32(&buf_pos);
189 offs3 = bytestream_get_le32(&buf_pos);
192 if(fflags3 == 0x80) return 4;
194 if(fflags1 & 0x200) {
195 s->cur_frame = s->iv_frame + 1;
196 s->ref_frame = s->iv_frame;
198 s->cur_frame = s->iv_frame;
199 s->ref_frame = s->iv_frame + 1;
202 buf_pos = buf + 16 + offs1;
203 offs = bytestream_get_le32(&buf_pos);
205 iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
206 hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
207 FFMIN(hdr_width, 160));
209 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
212 buf_pos = buf + 16 + offs2;
213 offs = bytestream_get_le32(&buf_pos);
215 iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
216 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
217 FFMIN(chroma_width, 40));
219 buf_pos = buf + 16 + offs3;
220 offs = bytestream_get_le32(&buf_pos);
222 iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
223 chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
224 FFMIN(chroma_width, 40));
237 long split_direction;
241 /* ---------------------------------------------------------------------- */
243 #define LV1_CHECK(buf1,rle_v3,lv1,lp2) \
244 if((lv1 & 0x80) != 0) { \
255 #define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \
268 #define LP2_CHECK(buf1,rle_v3,lp2) \
269 if(lp2 == 0 && rle_v3 != 0) \
277 #define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
285 static void iv_Decode_Chunk(Indeo3DecodeContext *s,
286 uint8_t *cur, uint8_t *ref, int width, int height,
287 const uint8_t *buf1, long fflags2, const uint8_t *hdr,
288 const uint8_t *buf2, int min_width_160)
291 unsigned long bit_pos, lv, lv1, lv2;
292 long *width_tbl, width_tbl_arr[10];
293 const signed char *ref_vectors;
294 uint8_t *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
295 uint32_t *cur_lp, *ref_lp;
296 const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
297 uint8_t *correction_type_sp[2];
298 ustr_t strip_tbl[20], *strip;
299 int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
300 rle_v1, rle_v2, rle_v3;
306 width_tbl = width_tbl_arr + 1;
307 i = (width < 0 ? width + 3 : width)/4;
308 for(j = -1; j < 8; j++)
309 width_tbl[j] = i * j;
313 for(region_160_width = 0; region_160_width < (width - min_width_160); region_160_width += min_width_160);
315 strip->ypos = strip->xpos = 0;
316 for(strip->width = min_width_160; width > strip->width; strip->width *= 2);
317 strip->height = height;
318 strip->split_direction = 0;
319 strip->split_flag = 0;
324 rle_v1 = rle_v2 = rle_v3 = 0;
326 while(strip >= strip_tbl) {
333 cmd = (bit_buf >> bit_pos) & 0x03;
337 memcpy(strip, strip-1, sizeof(ustr_t));
338 strip->split_flag = 1;
339 strip->split_direction = 0;
340 strip->height = (strip->height > 8 ? ((strip->height+8)>>4)<<3 : 4);
342 } else if(cmd == 1) {
344 memcpy(strip, strip-1, sizeof(ustr_t));
345 strip->split_flag = 1;
346 strip->split_direction = 1;
347 strip->width = (strip->width > 8 ? ((strip->width+8)>>4)<<3 : 4);
349 } else if(cmd == 2) {
350 if(strip->usl7 == 0) {
355 } else if(cmd == 3) {
356 if(strip->usl7 == 0) {
358 ref_vectors = (const signed char*)buf2 + (*buf1 * 2);
364 cur_frm_pos = cur + width * strip->ypos + strip->xpos;
366 if((blks_width = strip->width) < 0)
369 blks_height = strip->height;
371 if(ref_vectors != NULL) {
372 ref_frm_pos = ref + (ref_vectors[0] + strip->ypos) * width +
373 ref_vectors[1] + strip->xpos;
375 ref_frm_pos = cur_frm_pos - width_tbl[4];
384 cmd = (bit_buf >> bit_pos) & 0x03;
386 if(cmd == 0 || ref_vectors != NULL) {
387 for(lp1 = 0; lp1 < blks_width; lp1++) {
388 for(i = 0, j = 0; i < blks_height; i++, j += width_tbl[1])
389 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
401 if((lv - 8) <= 7 && (k == 0 || k == 3 || k == 10)) {
402 cp2 = s->ModPred + ((lv - 8) << 7);
404 for(i = 0; i < blks_width << 2; i++) {
410 if(k == 1 || k == 4) {
411 lv = (hdr[j] & 0xf) + fflags2;
412 correction_type_sp[0] = s->corrector_type + (lv << 8);
413 correction_lp[0] = correction + (lv << 8);
414 lv = (hdr[j] >> 4) + fflags2;
415 correction_lp[1] = correction + (lv << 8);
416 correction_type_sp[1] = s->corrector_type + (lv << 8);
418 correctionloworder_lp[0] = correctionloworder_lp[1] = correctionloworder + (lv << 8);
419 correctionhighorder_lp[0] = correctionhighorder_lp[1] = correctionhighorder + (lv << 8);
420 correction_type_sp[0] = correction_type_sp[1] = s->corrector_type + (lv << 8);
421 correction_lp[0] = correction_lp[1] = correction + (lv << 8);
426 case 0: /********** CASE 0 **********/
427 for( ; blks_height > 0; blks_height -= 4) {
428 for(lp1 = 0; lp1 < blks_width; lp1++) {
429 for(lp2 = 0; lp2 < 4; ) {
431 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2];
432 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2];
434 switch(correction_type_sp[0][k]) {
436 *cur_lp = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
440 res = ((le2me_16(((unsigned short *)(ref_lp))[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
441 ((unsigned short *)cur_lp)[0] = le2me_16(res);
442 res = ((le2me_16(((unsigned short *)(ref_lp))[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
443 ((unsigned short *)cur_lp)[1] = le2me_16(res);
449 for(i = 0, j = 0; i < 2; i++, j += width_tbl[1])
450 cur_lp[j] = ref_lp[j];
456 for(i = 0, j = 0; i < (3 - lp2); i++, j += width_tbl[1])
457 cur_lp[j] = ref_lp[j];
463 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
465 if(rle_v1 == 1 || ref_vectors != NULL) {
466 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
467 cur_lp[j] = ref_lp[j];
470 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
477 LP2_CHECK(buf1,rle_v3,lp2)
479 for(i = 0, j = 0; i < (4 - lp2); i++, j += width_tbl[1])
480 cur_lp[j] = ref_lp[j];
492 if(ref_vectors != NULL) {
493 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
494 cur_lp[j] = ref_lp[j];
501 lv = (lv1 & 0x7F) << 1;
504 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
507 LV1_CHECK(buf1,rle_v3,lv1,lp2)
518 cur_frm_pos += ((width - blks_width) * 4);
519 ref_frm_pos += ((width - blks_width) * 4);
524 case 3: /********** CASE 3 **********/
525 if(ref_vectors != NULL)
529 for( ; blks_height > 0; blks_height -= 8) {
530 for(lp1 = 0; lp1 < blks_width; lp1++) {
531 for(lp2 = 0; lp2 < 4; ) {
534 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
535 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
537 switch(correction_type_sp[lp2 & 0x01][k]) {
539 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
540 if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
541 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
543 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
548 res = ((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + correction_lp[lp2 & 0x01][*buf1]) << 1;
549 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
550 res = ((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
551 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
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] = cur_lp[width_tbl[1]];
563 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
571 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
593 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
596 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
597 cur_lp[j] = ref_lp[j];
600 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
603 rle_v2 = (*buf1) - 1;
607 LP2_CHECK(buf1,rle_v3,lp2)
609 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
615 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
617 lv = (lv1 & 0x7F) << 1;
621 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
624 LV1_CHECK(buf1,rle_v3,lv1,lp2)
635 cur_frm_pos += (((width * 2) - blks_width) * 4);
640 case 10: /********** CASE 10 **********/
641 if(ref_vectors == NULL) {
644 for( ; blks_height > 0; blks_height -= 8) {
645 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
646 for(lp2 = 0; lp2 < 4; ) {
648 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
649 ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
652 if(lp2 == 0 && flag1 != 0) {
653 #ifdef WORDS_BIGENDIAN
654 lv1 = lv1 & 0xFF00FF00;
655 lv1 = (lv1 >> 8) | lv1;
656 lv2 = lv2 & 0xFF00FF00;
657 lv2 = (lv2 >> 8) | lv2;
659 lv1 = lv1 & 0x00FF00FF;
660 lv1 = (lv1 << 8) | lv1;
661 lv2 = lv2 & 0x00FF00FF;
662 lv2 = (lv2 << 8) | lv2;
666 switch(correction_type_sp[lp2 & 0x01][k]) {
668 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1);
669 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1);
670 if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
671 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
672 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
674 cur_lp[0] = cur_lp[width_tbl[1]];
675 cur_lp[1] = cur_lp[width_tbl[1]+1];
681 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(lv1) >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1]) << 1);
682 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(lv2) >> 1) + correctionloworder_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];
697 for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
701 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
702 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
704 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
715 if(lp2 == 0 && flag1 != 0) {
716 for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
720 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
721 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
723 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
734 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
737 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
741 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
742 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
744 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
750 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
754 rle_v2 = (*buf1) - 1;
757 LP2_CHECK(buf1,rle_v3,lp2)
759 if(lp2 == 0 && flag1 != 0) {
760 for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
764 cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
765 cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
767 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
792 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
794 lv = (lv1 & 0x7F) << 1;
797 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
799 LV1_CHECK(buf1,rle_v3,lv1,lp2)
810 cur_frm_pos += (((width * 2) - blks_width) * 4);
814 for( ; blks_height > 0; blks_height -= 8) {
815 for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
816 for(lp2 = 0; lp2 < 4; ) {
818 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
819 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
821 switch(correction_type_sp[lp2 & 0x01][k]) {
823 lv1 = correctionloworder_lp[lp2 & 0x01][k];
824 lv2 = correctionhighorder_lp[lp2 & 0x01][k];
825 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
826 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
827 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
828 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
833 lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
834 lv2 = correctionloworder_lp[lp2 & 0x01][k];
835 cur_lp[0] = le2me_32(((le2me_32(ref_lp[0]) >> 1) + lv1) << 1);
836 cur_lp[1] = le2me_32(((le2me_32(ref_lp[1]) >> 1) + lv2) << 1);
837 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + lv1) << 1);
838 cur_lp[width_tbl[1]+1] = le2me_32(((le2me_32(ref_lp[width_tbl[1]+1]) >> 1) + lv2) << 1);
844 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
845 cur_lp[j] = ref_lp[j];
846 cur_lp[j+1] = ref_lp[j+1];
854 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
855 cur_lp[j] = ref_lp[j];
856 cur_lp[j+1] = ref_lp[j+1];
864 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
865 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
866 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
867 ((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
869 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
873 rle_v2 = (*buf1) - 1;
877 LP2_CHECK(buf1,rle_v3,lp2)
880 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
881 cur_lp[j] = ref_lp[j];
882 cur_lp[j+1] = ref_lp[j+1];
888 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
890 lv = (lv1 & 0x7F) << 1;
893 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
894 ((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
895 LV1_CHECK(buf1,rle_v3,lv1,lp2)
907 cur_frm_pos += (((width * 2) - blks_width) * 4);
908 ref_frm_pos += (((width * 2) - blks_width) * 4);
913 case 11: /********** CASE 11 **********/
914 if(ref_vectors == NULL)
917 for( ; blks_height > 0; blks_height -= 8) {
918 for(lp1 = 0; lp1 < blks_width; lp1++) {
919 for(lp2 = 0; lp2 < 4; ) {
921 cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
922 ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
924 switch(correction_type_sp[lp2 & 0x01][k]) {
926 cur_lp[0] = le2me_32(((le2me_32(*ref_lp) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
927 cur_lp[width_tbl[1]] = le2me_32(((le2me_32(ref_lp[width_tbl[1]]) >> 1) + correction_lp[lp2 & 0x01][k]) << 1);
932 lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
933 lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
934 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[0]) >> 1) + lv1) << 1);
935 ((unsigned short *)cur_lp)[0] = le2me_16(res);
936 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[1]) >> 1) + lv2) << 1);
937 ((unsigned short *)cur_lp)[1] = le2me_16(res);
938 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]]) >> 1) + lv1) << 1);
939 ((unsigned short *)cur_lp)[width_tbl[2]] = le2me_16(res);
940 res = (unsigned short)(((le2me_16(((unsigned short *)ref_lp)[width_tbl[2]+1]) >> 1) + lv2) << 1);
941 ((unsigned short *)cur_lp)[width_tbl[2]+1] = le2me_16(res);
947 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
948 cur_lp[j] = ref_lp[j];
955 for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
956 cur_lp[j] = ref_lp[j];
963 RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
965 for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
966 cur_lp[j] = ref_lp[j];
968 RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
972 rle_v2 = (*buf1) - 1;
976 LP2_CHECK(buf1,rle_v3,lp2)
979 for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
980 cur_lp[j] = ref_lp[j];
985 av_log(s->avctx, AV_LOG_ERROR, "UNTESTED.\n");
987 lv = (lv1 & 0x7F) << 1;
990 for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
992 LV1_CHECK(buf1,rle_v3,lv1,lp2)
1004 cur_frm_pos += (((width * 2) - blks_width) * 4);
1005 ref_frm_pos += (((width * 2) - blks_width) * 4);
1014 if(strip < strip_tbl)
1017 for( ; strip >= strip_tbl; strip--) {
1018 if(strip->split_flag != 0) {
1019 strip->split_flag = 0;
1020 strip->usl7 = (strip-1)->usl7;
1022 if(strip->split_direction) {
1023 strip->xpos += strip->width;
1024 strip->width = (strip-1)->width - strip->width;
1025 if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1026 strip->width = width - strip->xpos;
1028 strip->ypos += strip->height;
1029 strip->height = (strip-1)->height - strip->height;
1037 static av_cold int indeo3_decode_init(AVCodecContext *avctx)
1039 Indeo3DecodeContext *s = avctx->priv_data;
1043 s->width = avctx->width;
1044 s->height = avctx->height;
1045 avctx->pix_fmt = PIX_FMT_YUV410P;
1047 if (!(ret = build_modpred(s)))
1048 ret = iv_alloc_frames(s);
1055 static int indeo3_decode_frame(AVCodecContext *avctx,
1056 void *data, int *data_size,
1057 const uint8_t *buf, int buf_size)
1059 Indeo3DecodeContext *s=avctx->priv_data;
1060 uint8_t *src, *dest;
1063 iv_decode_frame(s, buf, buf_size);
1065 if(s->frame.data[0])
1066 avctx->release_buffer(avctx, &s->frame);
1068 s->frame.reference = 0;
1069 if(avctx->get_buffer(avctx, &s->frame) < 0) {
1070 av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1074 src = s->cur_frame->Ybuf;
1075 dest = s->frame.data[0];
1076 for (y = 0; y < s->height; y++) {
1077 memcpy(dest, src, s->cur_frame->y_w);
1078 src += s->cur_frame->y_w;
1079 dest += s->frame.linesize[0];
1082 if (!(s->avctx->flags & CODEC_FLAG_GRAY))
1084 src = s->cur_frame->Ubuf;
1085 dest = s->frame.data[1];
1086 for (y = 0; y < s->height / 4; y++) {
1087 memcpy(dest, src, s->cur_frame->uv_w);
1088 src += s->cur_frame->uv_w;
1089 dest += s->frame.linesize[1];
1092 src = s->cur_frame->Vbuf;
1093 dest = s->frame.data[2];
1094 for (y = 0; y < s->height / 4; y++) {
1095 memcpy(dest, src, s->cur_frame->uv_w);
1096 src += s->cur_frame->uv_w;
1097 dest += s->frame.linesize[2];
1101 *data_size=sizeof(AVFrame);
1102 *(AVFrame*)data= s->frame;
1107 static av_cold int indeo3_decode_end(AVCodecContext *avctx)
1109 Indeo3DecodeContext *s = avctx->priv_data;
1116 AVCodec indeo3_decoder = {
1120 sizeof(Indeo3DecodeContext),
1124 indeo3_decode_frame,
1127 .long_name = NULL_IF_CONFIG_SMALL("Intel Indeo 3"),