2
* Intel Indeo 3 (IV31, IV32, etc.) video decoder for ffmpeg
3
* written, produced, and directed by Alan Smithee
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13
* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28
#include "mpegvideo.h"
30
#include "indeo3data.h"
37
unsigned char *the_buf;
38
unsigned int the_buf_size;
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unsigned short y_w, y_h;
40
unsigned short uv_w, uv_h;
43
typedef struct Indeo3DecodeContext {
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AVCodecContext *avctx;
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unsigned char *ModPred;
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unsigned short *corrector_type;
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} Indeo3DecodeContext;
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static int corrector_type_0[24] = {
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195, 159, 133, 115, 101, 93, 87, 77,
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195, 159, 133, 115, 101, 93, 87, 77,
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128, 79, 79, 79, 79, 79, 79, 79
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static int corrector_type_2[8] = { 9, 7, 6, 8, 5, 4, 3, 2 };
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static void build_modpred(Indeo3DecodeContext *s)
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s->ModPred = (unsigned char *) av_malloc (8 * 128);
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for (i=0; i < 128; ++i) {
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s->ModPred[i+0*128] = (i > 126) ? 254 : 2*((i + 1) - ((i + 1) % 2));
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s->ModPred[i+1*128] = (i == 7) ? 20 : ((i == 119 || i == 120)
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? 236 : 2*((i + 2) - ((i + 1) % 3)));
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s->ModPred[i+2*128] = (i > 125) ? 248 : 2*((i + 2) - ((i + 2) % 4));
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s->ModPred[i+3*128] = 2*((i + 1) - ((i - 3) % 5));
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s->ModPred[i+4*128] = (i == 8) ? 20 : 2*((i + 1) - ((i - 3) % 6));
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s->ModPred[i+5*128] = 2*((i + 4) - ((i + 3) % 7));
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s->ModPred[i+6*128] = (i > 123) ? 240 : 2*((i + 4) - ((i + 4) % 8));
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s->ModPred[i+7*128] = 2*((i + 5) - ((i + 4) % 9));
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s->corrector_type = (unsigned short *) av_malloc (24 * 256 * sizeof(unsigned short));
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for (i=0; i < 24; ++i) {
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for (j=0; j < 256; ++j) {
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s->corrector_type[i*256+j] = (j < corrector_type_0[i])
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? 1 : ((j < 248 || (i == 16 && j == 248))
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? 0 : corrector_type_2[j - 248]);
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static void iv_Decode_Chunk(Indeo3DecodeContext *s, unsigned char *cur,
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unsigned char *ref, int width, int height, unsigned char *buf1,
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long fflags2, unsigned char *hdr,
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unsigned char *buf2, int min_width_160);
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#define min(a,b) ((a) < (b) ? (a) : (b))
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/* ---------------------------------------------------------------------- */
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static void iv_alloc_frames(Indeo3DecodeContext *s)
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int luma_width, luma_height, luma_pixels, chroma_width, chroma_height,
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chroma_pixels, bufsize, i;
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luma_width = (s->width + 3) & (~3);
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luma_height = (s->height + 3) & (~3);
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s->iv_frame[0].y_w = s->iv_frame[0].y_h =
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s->iv_frame[0].the_buf_size = 0;
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s->iv_frame[1].y_w = s->iv_frame[1].y_h =
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s->iv_frame[1].the_buf_size = 0;
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s->iv_frame[1].the_buf = NULL;
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chroma_width = ((luma_width >> 2) + 3) & (~3);
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chroma_height = ((luma_height>> 2) + 3) & (~3);
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luma_pixels = luma_width * luma_height;
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chroma_pixels = chroma_width * chroma_height;
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bufsize = luma_pixels * 2 + luma_width * 3 +
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(chroma_pixels + chroma_width) * 4;
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if((s->iv_frame[0].the_buf =
124
(s->iv_frame[0].the_buf_size == 0 ? av_malloc(bufsize) :
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av_realloc(s->iv_frame[0].the_buf, bufsize))) == NULL)
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s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width;
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s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height;
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s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width;
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s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height;
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s->iv_frame[0].the_buf_size = bufsize;
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s->iv_frame[0].Ybuf = s->iv_frame[0].the_buf + luma_width;
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i = luma_pixels + luma_width * 2;
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s->iv_frame[1].Ybuf = s->iv_frame[0].the_buf + i;
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i += (luma_pixels + luma_width);
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s->iv_frame[0].Ubuf = s->iv_frame[0].the_buf + i;
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i += (chroma_pixels + chroma_width);
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s->iv_frame[1].Ubuf = s->iv_frame[0].the_buf + i;
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i += (chroma_pixels + chroma_width);
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s->iv_frame[0].Vbuf = s->iv_frame[0].the_buf + i;
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i += (chroma_pixels + chroma_width);
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s->iv_frame[1].Vbuf = s->iv_frame[0].the_buf + i;
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for(i = 1; i <= luma_width; i++)
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s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] =
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s->iv_frame[0].Ubuf[-i] = 0x80;
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for(i = 1; i <= chroma_width; i++) {
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s->iv_frame[1].Ubuf[-i] = 0x80;
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s->iv_frame[0].Vbuf[-i] = 0x80;
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s->iv_frame[1].Vbuf[-i] = 0x80;
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s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80;
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/* ---------------------------------------------------------------------- */
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static void iv_free_func(Indeo3DecodeContext *s)
162
for(i = 0 ; i < 2 ; i++) {
163
if(s->iv_frame[i].the_buf != NULL)
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av_free(s->iv_frame[i].the_buf);
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s->iv_frame[i].Ybuf = s->iv_frame[i].Ubuf =
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s->iv_frame[i].Vbuf = NULL;
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s->iv_frame[i].the_buf = NULL;
168
s->iv_frame[i].the_buf_size = 0;
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s->iv_frame[i].y_w = s->iv_frame[i].y_h = 0;
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s->iv_frame[i].uv_w = s->iv_frame[i].uv_h = 0;
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av_free(s->corrector_type);
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/* ---------------------------------------------------------------------- */
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static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
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unsigned char *buf, int buf_size)
181
unsigned int hdr_width, hdr_height,
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chroma_width, chroma_height;
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unsigned long fflags1, fflags2, fflags3, offs1, offs2, offs3, offs;
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unsigned char *hdr_pos, *buf_pos;
189
fflags1 = le2me_16(*(uint16_t *)buf_pos);
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fflags3 = le2me_32(*(uint32_t *)buf_pos);
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fflags2 = *buf_pos++;
195
hdr_height = le2me_16(*(uint16_t *)buf_pos);
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hdr_width = le2me_16(*(uint16_t *)buf_pos);
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chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
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chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;
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offs1 = le2me_32(*(uint32_t *)buf_pos);
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offs2 = le2me_32(*(uint32_t *)buf_pos);
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offs3 = le2me_32(*(uint32_t *)buf_pos);
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if(fflags3 == 0x80) return 4;
210
if(fflags1 & 0x200) {
211
s->cur_frame = s->iv_frame + 1;
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s->ref_frame = s->iv_frame;
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s->cur_frame = s->iv_frame;
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s->ref_frame = s->iv_frame + 1;
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buf_pos = buf + 16 + offs1;
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offs = le2me_32(*(uint32_t *)buf_pos);
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iv_Decode_Chunk(s, s->cur_frame->Ybuf, s->ref_frame->Ybuf, hdr_width,
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hdr_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
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min(hdr_width, 160));
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buf_pos = buf + 16 + offs2;
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offs = le2me_32(*(uint32_t *)buf_pos);
230
iv_Decode_Chunk(s, s->cur_frame->Vbuf, s->ref_frame->Vbuf, chroma_width,
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chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
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min(chroma_width, 40));
234
buf_pos = buf + 16 + offs3;
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offs = le2me_32(*(uint32_t *)buf_pos);
238
iv_Decode_Chunk(s, s->cur_frame->Ubuf, s->ref_frame->Ubuf, chroma_width,
239
chroma_height, buf_pos + offs * 2, fflags2, hdr_pos, buf_pos,
240
min(chroma_width, 40));
251
long split_direction;
255
/* ---------------------------------------------------------------------- */
257
#define LV1_CHECK(buf1,rle_v3,lv1,lp2) \
258
if((lv1 & 0x80) != 0) { \
269
#define RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3) \
282
#define LP2_CHECK(buf1,rle_v3,lp2) \
283
if(lp2 == 0 && rle_v3 != 0) \
291
#define RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2) \
299
static void iv_Decode_Chunk(Indeo3DecodeContext *s,
300
unsigned char *cur, unsigned char *ref, int width, int height,
301
unsigned char *buf1, long fflags2, unsigned char *hdr,
302
unsigned char *buf2, int min_width_160)
304
unsigned char bit_buf;
305
unsigned long bit_pos, lv, lv1, lv2;
306
long *width_tbl, width_tbl_arr[10];
308
unsigned char *cur_frm_pos, *ref_frm_pos, *cp, *cp2;
309
uint32_t *cur_lp, *ref_lp;
310
const uint32_t *correction_lp[2], *correctionloworder_lp[2], *correctionhighorder_lp[2];
311
unsigned short *correction_type_sp[2];
312
ustr_t strip_tbl[20], *strip;
313
int i, j, k, lp1, lp2, flag1, cmd, blks_width, blks_height, region_160_width,
314
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 = 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 = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
453
((unsigned short *)cur_lp)[0] = ((((unsigned short *)(ref_lp))[0] >> 1)
454
+ correction_lp[lp2 & 0x01][*buf1++]) << 1;
455
((unsigned short *)cur_lp)[1] = ((((unsigned short *)(ref_lp))[1] >> 1)
456
+ correction_lp[lp2 & 0x01][k]) << 1;
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]] = ((*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] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
560
((unsigned short *)cur_lp)[width_tbl[2]] =
561
((((unsigned short *)ref_lp)[0] >> 1) + correction_lp[lp2 & 0x01][*buf1++]) << 1;
562
((unsigned short *)cur_lp)[width_tbl[2]+1] =
563
((((unsigned short *)ref_lp)[1] >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
564
if(lp2 > 0 || flag1 == 0 || strip->ypos != 0)
565
cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
567
cur_lp[0] = cur_lp[width_tbl[1]];
573
for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
581
for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
603
RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
606
for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
607
cur_lp[j] = ref_lp[j];
610
RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
613
rle_v2 = (*buf1) - 1;
617
LP2_CHECK(buf1,rle_v3,lp2)
619
for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
625
fprintf(stderr, "UNTESTED.\n");
627
lv = (lv1 & 0x7F) << 1;
631
for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
634
LV1_CHECK(buf1,rle_v3,lv1,lp2)
645
cur_frm_pos += (((width * 2) - blks_width) * 4);
650
case 10: /********** CASE 10 **********/
651
if(ref_vectors == NULL) {
654
for( ; blks_height > 0; blks_height -= 8) {
655
for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
656
for(lp2 = 0; lp2 < 4; ) {
658
cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
659
ref_lp = ((uint32_t *)cur_frm_pos) + width_tbl[(lp2 * 2) - 1];
662
if(lp2 == 0 && flag1 != 0) {
663
lv1 = lv1 & 0x00FF00FF;
664
lv1 = (lv1 << 8) | lv1;
665
lv2 = lv2 & 0x00FF00FF;
666
lv2 = (lv2 << 8) | lv2;
669
switch(correction_type_sp[lp2 & 0x01][k]) {
671
cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1;
672
cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionhighorder_lp[lp2 & 0x01][k]) << 1;
673
if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
674
cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
675
cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
677
cur_lp[0] = cur_lp[width_tbl[1]];
678
cur_lp[1] = cur_lp[width_tbl[1]+1];
684
cur_lp[width_tbl[1]] = ((lv1 >> 1) + correctionloworder_lp[lp2 & 0x01][*buf1++]) << 1;
685
cur_lp[width_tbl[1]+1] = ((lv2 >> 1) + correctionloworder_lp[lp2 & 0x01][k]) << 1;
686
if(lp2 > 0 || strip->ypos != 0 || flag1 == 0) {
687
cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
688
cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
690
cur_lp[0] = cur_lp[width_tbl[1]];
691
cur_lp[1] = cur_lp[width_tbl[1]+1];
699
for(i = 0, j = width_tbl[1]; i < 3; i++, j += width_tbl[1]) {
703
cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
704
cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
706
for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
717
if(lp2 == 0 && flag1 != 0) {
718
for(i = 0, j = width_tbl[1]; i < 5; i++, j += width_tbl[1]) {
722
cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
723
cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
725
for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
736
RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
739
for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
743
cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
744
cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
746
for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
752
RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
756
rle_v2 = (*buf1) - 1;
759
LP2_CHECK(buf1,rle_v3,lp2)
761
if(lp2 == 0 && flag1 != 0) {
762
for(i = 0, j = width_tbl[1]; i < 7; i++, j += width_tbl[1]) {
766
cur_lp[0] = ((cur_lp[-width_tbl[1]] >> 1) + (cur_lp[width_tbl[1]] >> 1)) & 0xFEFEFEFE;
767
cur_lp[1] = ((cur_lp[-width_tbl[1]+1] >> 1) + (cur_lp[width_tbl[1]+1] >> 1)) & 0xFEFEFEFE;
769
for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
794
fprintf(stderr, "UNTESTED.\n");
796
lv = (lv1 & 0x7F) << 1;
799
for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
801
LV1_CHECK(buf1,rle_v3,lv1,lp2)
812
cur_frm_pos += (((width * 2) - blks_width) * 4);
816
for( ; blks_height > 0; blks_height -= 8) {
817
for(lp1 = 0; lp1 < blks_width; lp1 += 2) {
818
for(lp2 = 0; lp2 < 4; ) {
820
cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
821
ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
823
switch(correction_type_sp[lp2 & 0x01][k]) {
825
lv1 = correctionloworder_lp[lp2 & 0x01][k];
826
lv2 = correctionhighorder_lp[lp2 & 0x01][k];
827
cur_lp[0] = ((ref_lp[0] >> 1) + lv1) << 1;
828
cur_lp[1] = ((ref_lp[1] >> 1) + lv2) << 1;
829
cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + lv1) << 1;
830
cur_lp[width_tbl[1]+1] = ((ref_lp[width_tbl[1]+1] >> 1) + lv2) << 1;
835
lv1 = correctionloworder_lp[lp2 & 0x01][*buf1++];
836
lv2 = correctionloworder_lp[lp2 & 0x01][k];
837
cur_lp[0] = ((ref_lp[0] >> 1) + lv1) << 1;
838
cur_lp[1] = ((ref_lp[1] >> 1) + lv2) << 1;
839
cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + lv1) << 1;
840
cur_lp[width_tbl[1]+1] = ((ref_lp[width_tbl[1]+1] >> 1) + lv2) << 1;
846
for(i = 0, j = 0; i < 4; i++, j += width_tbl[1]) {
847
cur_lp[j] = ref_lp[j];
848
cur_lp[j+1] = ref_lp[j+1];
856
for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1]) {
857
cur_lp[j] = ref_lp[j];
858
cur_lp[j+1] = ref_lp[j+1];
866
RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
867
for(i = 0, j = 0; i < 8; i++, j += width_tbl[1]) {
868
((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)ref_frm_pos)[j];
869
((uint32_t *)cur_frm_pos)[j+1] = ((uint32_t *)ref_frm_pos)[j+1];
871
RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
875
rle_v2 = (*buf1) - 1;
879
LP2_CHECK(buf1,rle_v3,lp2)
882
for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1]) {
883
cur_lp[j] = ref_lp[j];
884
cur_lp[j+1] = ref_lp[j+1];
890
fprintf(stderr, "UNTESTED.\n");
892
lv = (lv1 & 0x7F) << 1;
895
for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
896
((uint32_t *)cur_frm_pos)[j] = ((uint32_t *)cur_frm_pos)[j+1] = lv;
897
LV1_CHECK(buf1,rle_v3,lv1,lp2)
909
cur_frm_pos += (((width * 2) - blks_width) * 4);
910
ref_frm_pos += (((width * 2) - blks_width) * 4);
915
case 11: /********** CASE 11 **********/
916
if(ref_vectors == NULL)
919
for( ; blks_height > 0; blks_height -= 8) {
920
for(lp1 = 0; lp1 < blks_width; lp1++) {
921
for(lp2 = 0; lp2 < 4; ) {
923
cur_lp = ((uint32_t *)cur_frm_pos) + width_tbl[lp2 * 2];
924
ref_lp = ((uint32_t *)ref_frm_pos) + width_tbl[lp2 * 2];
926
switch(correction_type_sp[lp2 & 0x01][k]) {
928
cur_lp[0] = ((*ref_lp >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
929
cur_lp[width_tbl[1]] = ((ref_lp[width_tbl[1]] >> 1) + correction_lp[lp2 & 0x01][k]) << 1;
934
lv1 = (unsigned short)(correction_lp[lp2 & 0x01][*buf1++]);
935
lv2 = (unsigned short)(correction_lp[lp2 & 0x01][k]);
936
((unsigned short *)cur_lp)[0] = ((((unsigned short *)ref_lp)[0] >> 1) + lv1) << 1;
937
((unsigned short *)cur_lp)[1] = ((((unsigned short *)ref_lp)[1] >> 1) + lv2) << 1;
938
((unsigned short *)cur_lp)[width_tbl[2]] = ((((unsigned short *)ref_lp)[width_tbl[2]] >> 1) + lv1) << 1;
939
((unsigned short *)cur_lp)[width_tbl[2]+1] = ((((unsigned short *)ref_lp)[width_tbl[2]+1] >> 1) + lv2) << 1;
945
for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
946
cur_lp[j] = ref_lp[j];
953
for(i = 0, j = 0; i < 6 - (lp2 * 2); i++, j += width_tbl[1])
954
cur_lp[j] = ref_lp[j];
961
RLE_V3_CHECK(buf1,rle_v1,rle_v2,rle_v3)
963
for(i = 0, j = 0; i < 8; i++, j += width_tbl[1])
964
cur_lp[j] = ref_lp[j];
966
RLE_V2_CHECK(buf1,rle_v2, rle_v3,lp2)
970
rle_v2 = (*buf1) - 1;
974
LP2_CHECK(buf1,rle_v3,lp2)
977
for(i = 0, j = 0; i < 8 - (lp2 * 2); i++, j += width_tbl[1])
978
cur_lp[j] = ref_lp[j];
983
fprintf(stderr, "UNTESTED.\n");
985
lv = (lv1 & 0x7F) << 1;
988
for(i = 0, j = 0; i < 4; i++, j += width_tbl[1])
990
LV1_CHECK(buf1,rle_v3,lv1,lp2)
1002
cur_frm_pos += (((width * 2) - blks_width) * 4);
1003
ref_frm_pos += (((width * 2) - blks_width) * 4);
1012
if(strip < strip_tbl)
1015
for( ; strip >= strip_tbl; strip--) {
1016
if(strip->split_flag != 0) {
1017
strip->split_flag = 0;
1018
strip->usl7 = (strip-1)->usl7;
1020
if(strip->split_direction) {
1021
strip->xpos += strip->width;
1022
strip->width = (strip-1)->width - strip->width;
1023
if(region_160_width <= strip->xpos && width < strip->width + strip->xpos)
1024
strip->width = width - strip->xpos;
1026
strip->ypos += strip->height;
1027
strip->height = (strip-1)->height - strip->height;
1035
static int indeo3_decode_init(AVCodecContext *avctx)
1037
Indeo3DecodeContext *s = avctx->priv_data;
1040
s->width = avctx->width;
1041
s->height = avctx->height;
1042
avctx->pix_fmt = PIX_FMT_YUV410P;
1043
avctx->has_b_frames = 0;
1051
static int indeo3_decode_frame(AVCodecContext *avctx,
1052
void *data, int *data_size,
1053
unsigned char *buf, int buf_size)
1055
Indeo3DecodeContext *s=avctx->priv_data;
1056
unsigned char *src, *dest;
1059
iv_decode_frame(s, buf, buf_size);
1061
if(s->frame.data[0])
1062
avctx->release_buffer(avctx, &s->frame);
1064
s->frame.reference = 0;
1065
if(avctx->get_buffer(avctx, &s->frame) < 0) {
1066
fprintf(stderr, "get_buffer() failed\n");
1070
src = s->cur_frame->Ybuf;
1071
dest = s->frame.data[0];
1072
for (y = 0; y < s->height; y++) {
1073
memcpy(dest, src, s->cur_frame->y_w);
1074
src += s->cur_frame->y_w;
1075
dest += s->frame.linesize[0];
1078
src = s->cur_frame->Ubuf;
1079
dest = s->frame.data[1];
1080
for (y = 0; y < s->height / 4; y++) {
1081
memcpy(dest, src, s->cur_frame->uv_w);
1082
src += s->cur_frame->uv_w;
1083
dest += s->frame.linesize[1];
1086
src = s->cur_frame->Vbuf;
1087
dest = s->frame.data[2];
1088
for (y = 0; y < s->height / 4; y++) {
1089
memcpy(dest, src, s->cur_frame->uv_w);
1090
src += s->cur_frame->uv_w;
1091
dest += s->frame.linesize[2];
1094
*data_size=sizeof(AVFrame);
1095
*(AVFrame*)data= s->frame;
1100
static int indeo3_decode_end(AVCodecContext *avctx)
1102
Indeo3DecodeContext *s = avctx->priv_data;
1109
AVCodec indeo3_decoder = {
1113
sizeof(Indeo3DecodeContext),
1117
indeo3_decode_frame,