32 #define SPRITE_TRAJ_VLC_BITS 6
34 #define MB_TYPE_B_VLC_BITS 4
57 int16_t *ac_val, *ac_val1;
69 if(s->
mb_x==0 || s->
qscale == qscale_table[xy] || n==1 || n==3){
85 if(s->
mb_y==0 || s->
qscale == qscale_table[xy] || n==2 || n==3){
130 v|= 0x7F >> (7-(bits_count&7));
142 for(len=0; len<32; len++){
162 int d[4][2]={{0,0}, {0,0}, {0,0}, {0,0}};
163 int sprite_ref[4][2];
164 int virtual_ref[2][2];
192 while((1<<alpha)<w) alpha++;
193 while((1<<beta )<h) beta++;
199 sprite_ref[0][0]= a*vop_ref[0][0] + d[0][0];
200 sprite_ref[0][1]= a*vop_ref[0][1] + d[0][1];
201 sprite_ref[1][0]= a*vop_ref[1][0] + d[0][0] + d[1][0];
202 sprite_ref[1][1]= a*vop_ref[1][1] + d[0][1] + d[1][1];
203 sprite_ref[2][0]= a*vop_ref[2][0] + d[0][0] + d[2][0];
204 sprite_ref[2][1]= a*vop_ref[2][1] + d[0][1] + d[2][1];
206 sprite_ref[0][0]= (a>>1)*(2*vop_ref[0][0] + d[0][0]);
207 sprite_ref[0][1]= (a>>1)*(2*vop_ref[0][1] + d[0][1]);
208 sprite_ref[1][0]= (a>>1)*(2*vop_ref[1][0] + d[0][0] + d[1][0]);
209 sprite_ref[1][1]= (a>>1)*(2*vop_ref[1][1] + d[0][1] + d[1][1]);
210 sprite_ref[2][0]= (a>>1)*(2*vop_ref[2][0] + d[0][0] + d[2][0]);
211 sprite_ref[2][1]= (a>>1)*(2*vop_ref[2][1] + d[0][1] + d[2][1]);
220 virtual_ref[0][0]= 16*(vop_ref[0][0] + w2)
221 +
ROUNDED_DIV(((w - w2)*(r*sprite_ref[0][0] - 16*vop_ref[0][0]) + w2*(r*sprite_ref[1][0] - 16*vop_ref[1][0])),w);
222 virtual_ref[0][1]= 16*vop_ref[0][1]
223 +
ROUNDED_DIV(((w - w2)*(r*sprite_ref[0][1] - 16*vop_ref[0][1]) + w2*(r*sprite_ref[1][1] - 16*vop_ref[1][1])),w);
224 virtual_ref[1][0]= 16*vop_ref[0][0]
225 +
ROUNDED_DIV(((h - h2)*(r*sprite_ref[0][0] - 16*vop_ref[0][0]) + h2*(r*sprite_ref[2][0] - 16*vop_ref[2][0])),h);
226 virtual_ref[1][1]= 16*(vop_ref[0][1] + h2)
227 +
ROUNDED_DIV(((h - h2)*(r*sprite_ref[0][1] - 16*vop_ref[0][1]) + h2*(r*sprite_ref[2][1] - 16*vop_ref[2][1])),h);
246 s->
sprite_offset[1][0]= ((sprite_ref[0][0]>>1)|(sprite_ref[0][0]&1)) - a*(vop_ref[0][0]/2);
247 s->
sprite_offset[1][1]= ((sprite_ref[0][1]>>1)|(sprite_ref[0][1]&1)) - a*(vop_ref[0][1]/2);
257 + (-r*sprite_ref[0][0] + virtual_ref[0][0])*(-vop_ref[0][0])
258 + ( r*sprite_ref[0][1] - virtual_ref[0][1])*(-vop_ref[0][1])
259 + (1<<(alpha+rho-1));
261 + (-r*sprite_ref[0][1] + virtual_ref[0][1])*(-vop_ref[0][0])
262 + (-r*sprite_ref[0][0] + virtual_ref[0][0])*(-vop_ref[0][1])
263 + (1<<(alpha+rho-1));
264 s->
sprite_offset[1][0]= ( (-r*sprite_ref[0][0] + virtual_ref[0][0])*(-2*vop_ref[0][0] + 1)
265 +( r*sprite_ref[0][1] - virtual_ref[0][1])*(-2*vop_ref[0][1] + 1)
266 +2*w2*r*sprite_ref[0][0]
268 + (1<<(alpha+rho+1)));
269 s->
sprite_offset[1][1]= ( (-r*sprite_ref[0][1] + virtual_ref[0][1])*(-2*vop_ref[0][0] + 1)
270 +(-r*sprite_ref[0][0] + virtual_ref[0][0])*(-2*vop_ref[0][1] + 1)
271 +2*w2*r*sprite_ref[0][1]
273 + (1<<(alpha+rho+1)));
274 s->
sprite_delta[0][0]= (-r*sprite_ref[0][0] + virtual_ref[0][0]);
275 s->
sprite_delta[0][1]= (+r*sprite_ref[0][1] - virtual_ref[0][1]);
276 s->
sprite_delta[1][0]= (-r*sprite_ref[0][1] + virtual_ref[0][1]);
277 s->
sprite_delta[1][1]= (-r*sprite_ref[0][0] + virtual_ref[0][0]);
283 min_ab=
FFMIN(alpha, beta);
286 s->
sprite_offset[0][0]= (sprite_ref[0][0]<<(alpha+beta+rho-min_ab))
287 + (-r*sprite_ref[0][0] + virtual_ref[0][0])*h3*(-vop_ref[0][0])
288 + (-r*sprite_ref[0][0] + virtual_ref[1][0])*w3*(-vop_ref[0][1])
289 + (1<<(alpha+beta+rho-min_ab-1));
290 s->
sprite_offset[0][1]= (sprite_ref[0][1]<<(alpha+beta+rho-min_ab))
291 + (-r*sprite_ref[0][1] + virtual_ref[0][1])*h3*(-vop_ref[0][0])
292 + (-r*sprite_ref[0][1] + virtual_ref[1][1])*w3*(-vop_ref[0][1])
293 + (1<<(alpha+beta+rho-min_ab-1));
294 s->
sprite_offset[1][0]= (-r*sprite_ref[0][0] + virtual_ref[0][0])*h3*(-2*vop_ref[0][0] + 1)
295 + (-r*sprite_ref[0][0] + virtual_ref[1][0])*w3*(-2*vop_ref[0][1] + 1)
296 + 2*w2*h3*r*sprite_ref[0][0]
298 + (1<<(alpha+beta+rho-min_ab+1));
299 s->
sprite_offset[1][1]= (-r*sprite_ref[0][1] + virtual_ref[0][1])*h3*(-2*vop_ref[0][0] + 1)
300 + (-r*sprite_ref[0][1] + virtual_ref[1][1])*w3*(-2*vop_ref[0][1] + 1)
301 + 2*w2*h3*r*sprite_ref[0][1]
303 + (1<<(alpha+beta+rho-min_ab+1));
304 s->
sprite_delta[0][0]= (-r*sprite_ref[0][0] + virtual_ref[0][0])*h3;
305 s->
sprite_delta[0][1]= (-r*sprite_ref[0][0] + virtual_ref[1][0])*w3;
306 s->
sprite_delta[1][0]= (-r*sprite_ref[0][1] + virtual_ref[0][1])*h3;
307 s->
sprite_delta[1][1]= (-r*sprite_ref[0][1] + virtual_ref[1][1])*w3;
351 int mb_num_bits= av_log2(s->
mb_num - 1) + 1;
352 int header_extension=0, mb_num,
len;
357 for(len=0; len<32; len++){
377 int mb_x = 0, mb_y = 0;
382 if (++mb_x == s->
mb_width) mb_x = 0;
384 if(mb_num >= s->
mb_num)
return -1;
399 if(header_extension){
405 check_marker(&s->
gb,
"before time_increment in video packed header");
407 check_marker(&s->
gb,
"before vop_coding_type in video packed header");
447 int x, y, mb_v, sum, dx, dy, shift;
463 if(n) dy -= 1<<(shift + a + 1);
464 else dx -= 1<<(shift + a + 1);
481 if (sum < -len) sum= -
len;
482 else if (sum >= len) sum= len-1;
501 if (code < 0 || code > 9 ){
513 level =
get_bits(&s->
gb, code-1) + (1<<(code-1));
515 level = -
get_bits(&s->
gb, code-1) - (1<<(code-1));
540 static const int8_t quant_tab[4] = { -1, -2, 1, 2 };
590 if(dc_pred_dir) dir|=1;
594 int mx, my, pred_x, pred_y,
bits;
614 mot_val[0 ]= mot_val[2 ]=
616 mot_val[1 ]= mot_val[3 ]=
639 mot_val[0 ]= mot_val[2 ]=
641 mot_val[1 ]= mot_val[3 ]=
651 if ((cbpc & 16) == 0) {
670 mot_val[0 ]= mot_val[2 ] =
672 mot_val[1 ]= mot_val[3 ]=
705 static const int8_t quant_tab[4] = { -1, -2, 1, 2 };
753 if(dc_pred_dir) dir|=1;
780 if(mb_num >= mb_count)
return 0;
844 int n,
int coded,
int intra,
int rvlc)
850 const uint8_t * scan_table;
885 if (dc_pred_dir == 0)
915 qadd = (s->
qscale - 1) | 1;
953 level= level * qmul + qadd;
966 if (cache&0x80000000) {
967 if (cache&0x40000000) {
993 if (level>0) level= level * qmul + qadd;
994 else level= level * qmul - qadd;
996 if((
unsigned)(level + 2048) > 4095){
998 if(level > 2560 || level<-2560){
1003 level= level<0 ? -2048 : 2047;
1012 i+= run + rl->
max_run[run>>7][level/qmul] +1;
1021 level = level + rl->
max_level[run>>7][(run-1)&63] * qmul;
1038 block[scan_table[i]] =
level;
1042 block[scan_table[i]] =
level;
1123 for (i = 0; i < 6; i++) {
1152 int cbpc, cbpy, i, cbp, pred_x, pred_y, mx, my, dquant;
1154 static int8_t quant_tab[4] = { -1, -2, 1, 2 };
1201 cbp = (cbpc & 3) | (cbpy << 2);
1209 if ((cbpc & 16) == 0) {
1216 s->
mv[0][0][0] = mx;
1217 s->
mv[0][0][1] = my;
1237 s->
mv[0][i][0] = mx;
1238 s->
mv[0][i][1] = my;
1254 s->
mv[0][0][0] = mx;
1255 s->
mv[0][0][1] = my;
1269 s->
mv[0][i][0] = mx;
1270 s->
mv[0][i][1] = my;
1385 s->
last_mv[0][i][0]= s->
mv[0][i][0] = mx;
1386 s->
last_mv[0][i][1]= (s->
mv[0][i][1] = my)*2;
1396 s->
last_mv[1][i][0]= s->
mv[1][i][0] = mx;
1397 s->
last_mv[1][i][1]= (s->
mv[1][i][1] = my)*2;
1438 cbp = (cbpc & 3) | (cbpy << 2);
1451 for (i = 0; i < 6; i++) {
1460 for (i = 0; i < 6; i++) {
1488 int hours, minutes, seconds;
1491 if (time_code & 0x40) {
1492 hours = time_code >> 13;
1493 minutes = time_code >> 7 & 0x3f;
1494 seconds = time_code & 0x3f;
1495 s->
time_base = seconds + 60*(minutes + 60*hours);
1505 int profile_and_level_indication;
1507 profile_and_level_indication =
get_bits(gb, 8);
1509 s->
avctx->
profile = (profile_and_level_indication & 0xf0) >> 4;
1510 s->
avctx->
level = (profile_and_level_indication & 0x0f);
1541 int chroma_format=
get_bits(gb, 2);
1612 if (vo_ver_id == 1) {
1656 for(i=0; i<64; i++){
1670 for(i=0; i<64; i++){
1692 for(i=0; i<64; i++){
1720 int estimation_method=
get_bits(gb, 2);
1721 if(estimation_method<2){
1736 if(!
check_marker(gb,
"in complexity estimation part 1")){
1754 if(!
check_marker(gb,
"in complexity estimation part 2")){
1758 if(estimation_method==1){
1778 if(vo_ver_id != 1) {
1797 int h_sampling_factor_n;
1798 int h_sampling_factor_m;
1799 int v_sampling_factor_n;
1800 int v_sampling_factor_m;
1805 h_sampling_factor_n=
get_bits(gb, 5);
1806 h_sampling_factor_m=
get_bits(gb, 5);
1807 v_sampling_factor_n=
get_bits(gb, 5);
1808 v_sampling_factor_m=
get_bits(gb, 5);
1811 if( h_sampling_factor_n==0 || h_sampling_factor_m==0
1812 || v_sampling_factor_n==0 || v_sampling_factor_m==0){
1834 int ver = 0, build = 0, ver2 = 0, ver3 = 0;
1844 e=sscanf(buf,
"DivX%dBuild%d%c", &ver, &build, &last);
1846 e=sscanf(buf,
"DivX%db%d%c", &ver, &build, &last);
1858 e=sscanf(buf,
"FFmpe%*[^b]b%d", &build)+3;
1860 e=sscanf(buf,
"FFmpeg v%d.%d.%d / libavcodec build: %d", &ver, &ver2, &ver3, &build);
1862 e=sscanf(buf,
"Lavc%d.%d.%d", &ver, &ver2, &ver3)+1;
1864 build= (ver<<16) + (ver2<<8) + ver3;
1867 if(strcmp(buf,
"ffmpeg")==0){
1876 e=sscanf(buf,
"XviD%d", &build);
1885 int time_incr, time_increment;
1906 av_log(s->
avctx,
AV_LOG_ERROR,
"hmm, seems the headers are not complete, trying to guess time_increment_bits\n");
2055 av_log(s->
avctx,
AV_LOG_DEBUG,
"qp:%d fc:%d,%d %s size:%d pro:%d alt:%d top:%d %spel part:%d resync:%d w:%d a:%d rnd:%d vot:%d%s dc:%d ce:%d/%d/%d\n",
2070 if(load_backward_shape){
2080 av_log(s->
avctx,
AV_LOG_WARNING,
"looks like this file was encoded with (divx4/(old)xvid/opendivx) -> forcing low_delay flag\n");
2104 unsigned startcode,
v;
2127 startcode = ((startcode << 8) | v) & 0xffffffff;
2129 if((startcode&0xFFFFFF00) != 0x100)
2164 if(startcode >= 0x120 && startcode <= 0x12F){
2195 static int done = 0;
2274 #if CONFIG_MPEG4_VDPAU_DECODER
2275 AVCodec ff_mpeg4_vdpau_decoder = {
2276 .
name =
"mpeg4_vdpau",