32 |
* |
* |
33 |
* History: |
* History: |
34 |
* |
* |
35 |
|
* 15.07.2002 fix a bug in B-frame decode at DIRECT mode |
36 |
|
* MinChen <chenm001@163.com> |
37 |
|
* 10.07.2002 added BFRAMES_DEC_DEBUG support |
38 |
|
* Fix a little bug for low_delay flage |
39 |
|
* MinChen <chenm001@163.com> |
40 |
* 28.06.2002 added basic resync support to iframe/pframe_decode() |
* 28.06.2002 added basic resync support to iframe/pframe_decode() |
41 |
* 22.06.2002 added primative N_VOP support |
* 22.06.2002 added primative N_VOP support |
42 |
* #define BFRAMES_DEC now enables Minchenm's bframe decoder |
* #define BFRAMES_DEC now enables Minchen's bframe decoder |
43 |
* 08.05.2002 add low_delay support for B_VOP decode |
* 08.05.2002 add low_delay support for B_VOP decode |
44 |
* MinChen <chenm001@163.com> |
* MinChen <chenm001@163.com> |
45 |
* 05.05.2002 fix some B-frame decode problem |
* 05.05.2002 fix some B-frame decode problem |
55 |
* 22.12.2001 lock based interpolation |
* 22.12.2001 lock based interpolation |
56 |
* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
* 01.12.2001 inital version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
57 |
* |
* |
58 |
* $Id: decoder.c,v 1.26 2002-07-09 01:37:22 chenm001 Exp $ |
* $Id: decoder.c,v 1.32 2002-07-19 11:15:21 albeu Exp $ |
59 |
* |
* |
60 |
*************************************************************************/ |
*************************************************************************/ |
61 |
|
|
62 |
#include <stdlib.h> |
#include <stdlib.h> |
63 |
#include <string.h> |
#include <string.h> |
64 |
|
|
65 |
|
#ifdef BFRAMES_DEC_DEBUG |
66 |
|
#define BFRAMES_DEC |
67 |
|
#endif |
68 |
|
|
69 |
#include "xvid.h" |
#include "xvid.h" |
70 |
#include "portab.h" |
#include "portab.h" |
71 |
|
|
480 |
} |
} |
481 |
} |
} |
482 |
mb->quant = quant; |
mb->quant = quant; |
483 |
|
mb->mvs[0].x = mb->mvs[0].y = |
484 |
|
mb->mvs[1].x = mb->mvs[1].y = |
485 |
|
mb->mvs[2].x = mb->mvs[2].y = |
486 |
|
mb->mvs[3].x = mb->mvs[3].y =0; |
487 |
|
|
488 |
if (dec->interlacing) { |
if (dec->interlacing) { |
489 |
mb->field_dct = BitstreamGetBit(bs); |
mb->field_dct = BitstreamGetBit(bs); |
493 |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
decoder_mbintra(dec, mb, x, y, acpred_flag, cbp, bs, quant, |
494 |
intra_dc_threshold, bound); |
intra_dc_threshold, bound); |
495 |
} |
} |
496 |
|
if(dec->out_frm) |
497 |
|
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,0,y,dec->mb_width); |
498 |
|
|
499 |
} |
} |
500 |
|
|
501 |
} |
} |
559 |
|
|
560 |
uint32_t x, y; |
uint32_t x, y; |
561 |
uint32_t bound; |
uint32_t bound; |
562 |
|
int cp_mb, st_mb; |
563 |
|
|
564 |
start_timer(); |
start_timer(); |
565 |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
569 |
bound = 0; |
bound = 0; |
570 |
|
|
571 |
for (y = 0; y < dec->mb_height; y++) { |
for (y = 0; y < dec->mb_height; y++) { |
572 |
|
cp_mb = st_mb = 0; |
573 |
for (x = 0; x < dec->mb_width; x++) { |
for (x = 0; x < dec->mb_width; x++) { |
574 |
MACROBLOCK *mb; |
MACROBLOCK *mb; |
575 |
|
|
597 |
uint32_t cbp; |
uint32_t cbp; |
598 |
uint32_t intra; |
uint32_t intra; |
599 |
|
|
600 |
|
cp_mb++; |
601 |
mcbpc = get_mcbpc_inter(bs); |
mcbpc = get_mcbpc_inter(bs); |
602 |
mb->mode = mcbpc & 7; |
mb->mode = mcbpc & 7; |
603 |
cbpc = (mcbpc >> 4); |
cbpc = (mcbpc >> 4); |
724 |
dec->refn[0].v + |
dec->refn[0].v + |
725 |
(8 * y) * dec->edged_width / 2 + (8 * x), |
(8 * y) * dec->edged_width / 2 + (8 * x), |
726 |
dec->edged_width / 2); |
dec->edged_width / 2); |
|
|
|
727 |
stop_transfer_timer(); |
stop_transfer_timer(); |
728 |
|
if(dec->out_frm && cp_mb > 0) { |
729 |
|
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
730 |
|
cp_mb = 0; |
731 |
} |
} |
732 |
|
st_mb = x+1; |
733 |
} |
} |
734 |
} |
} |
735 |
|
if(dec->out_frm && cp_mb > 0) |
736 |
|
output_slice(&dec->cur, dec->edged_width,dec->width,dec->out_frm,st_mb,y,cp_mb); |
737 |
|
} |
738 |
} |
} |
739 |
|
|
740 |
|
|
811 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
812 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
813 |
|
|
814 |
|
|
815 |
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
if (!(pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
816 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
817 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
905 |
const MACROBLOCK * pMB, |
const MACROBLOCK * pMB, |
906 |
const uint32_t x_pos, |
const uint32_t x_pos, |
907 |
const uint32_t y_pos, |
const uint32_t y_pos, |
|
const uint32_t cbp, |
|
908 |
Bitstream * bs) |
Bitstream * bs) |
909 |
{ |
{ |
910 |
|
|
919 |
int b_uv_dx, b_uv_dy; |
int b_uv_dx, b_uv_dy; |
920 |
uint32_t i; |
uint32_t i; |
921 |
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
uint8_t *pY_Cur, *pU_Cur, *pV_Cur; |
922 |
|
const uint32_t cbp = pMB->cbp; |
923 |
|
|
924 |
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); |
925 |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); |
926 |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); |
927 |
|
|
928 |
|
|
929 |
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
if ((pMB->mode == MODE_INTER || pMB->mode == MODE_INTER_Q)) { |
930 |
uv_dx = pMB->mvs[0].x; |
uv_dx = pMB->mvs[0].x; |
931 |
uv_dy = pMB->mvs[0].y; |
uv_dy = pMB->mvs[0].y; |
1015 |
stride2); |
stride2); |
1016 |
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
interpolate8x8_c(dec->cur.v, dec->refn[2].v, 8 * x_pos, 8 * y_pos, |
1017 |
stride2); |
stride2); |
|
|
|
1018 |
stop_comp_timer(); |
stop_comp_timer(); |
1019 |
|
|
1020 |
for (i = 0; i < 6; i++) { |
for (i = 0; i < 6; i++) { |
1105 |
int fcode_forward, |
int fcode_forward, |
1106 |
int fcode_backward) |
int fcode_backward) |
1107 |
{ |
{ |
|
|
|
1108 |
uint32_t x, y; |
uint32_t x, y; |
1109 |
VECTOR mv, zeromv; |
VECTOR mv; |
1110 |
|
const VECTOR zeromv = {0,0}; |
1111 |
|
#ifdef BFRAMES_DEC_DEBUG |
1112 |
|
FILE *fp; |
1113 |
|
static char first=0; |
1114 |
|
#define BFRAME_DEBUG if (!first && fp){ \ |
1115 |
|
fprintf(fp,"Y=%3d X=%3d MB=%2d CBP=%02X\n",y,x,mb->mb_type,mb->cbp); \ |
1116 |
|
} |
1117 |
|
#endif |
1118 |
|
|
1119 |
start_timer(); |
start_timer(); |
1120 |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
image_setedges(&dec->refn[0], dec->edged_width, dec->edged_height, |
1121 |
dec->width, dec->height, dec->interlacing); |
dec->width, dec->height, dec->interlacing); |
1122 |
//image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, dec->width, dec->height, dec->interlacing); |
image_setedges(&dec->refn[1], dec->edged_width, dec->edged_height, |
1123 |
|
dec->width, dec->height, dec->interlacing); |
1124 |
stop_edges_timer(); |
stop_edges_timer(); |
1125 |
|
|
1126 |
|
#ifdef BFRAMES_DEC_DEBUG |
1127 |
|
if (!first){ |
1128 |
|
fp=fopen("C:\\XVIDDBG.TXT","w"); |
1129 |
|
} |
1130 |
|
#endif |
1131 |
|
|
1132 |
for (y = 0; y < dec->mb_height; y++) { |
for (y = 0; y < dec->mb_height; y++) { |
1133 |
// Initialize Pred Motion Vector |
// Initialize Pred Motion Vector |
1134 |
dec->p_fmv.x = dec->p_fmv.y = dec->p_bmv.x = dec->p_bmv.y = 0; |
dec->p_fmv = dec->p_bmv = zeromv; |
1135 |
for (x = 0; x < dec->mb_width; x++) { |
for (x = 0; x < dec->mb_width; x++) { |
1136 |
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
MACROBLOCK *mb = &dec->mbs[y * dec->mb_width + x]; |
1137 |
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
MACROBLOCK *last_mb = &dec->last_mbs[y * dec->mb_width + x]; |
1138 |
|
|
1139 |
mb->mvs[0].x = mb->mvs[0].y = zeromv.x = zeromv.y = mv.x = mv.y = |
mv = |
1140 |
0; |
mb->b_mvs[0] = mb->b_mvs[1] = mb->b_mvs[2] = mb->b_mvs[3] = |
1141 |
|
mb->mvs[0] = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = zeromv; |
1142 |
|
|
1143 |
// the last P_VOP is skip macroblock ? |
// the last P_VOP is skip macroblock ? |
1144 |
if (last_mb->mode == MODE_NOT_CODED) { |
if (last_mb->mode == MODE_NOT_CODED) { |
1145 |
//DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); |
//DEBUG2("Skip MB in B-frame at (X,Y)=!",x,y); |
|
mb->mb_type = MODE_FORWARD; |
|
1146 |
mb->cbp = 0; |
mb->cbp = 0; |
1147 |
mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
#ifdef BFRAMES_DEC_DEBUG |
1148 |
mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
mb->mb_type = MODE_NOT_CODED; |
1149 |
mb->quant = 8; |
BFRAME_DEBUG |
1150 |
|
#endif |
1151 |
|
mb->mb_type = MODE_FORWARD; |
1152 |
|
mb->quant = last_mb->quant; |
1153 |
|
//mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = mb->mvs[0].x; |
1154 |
|
//mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = mb->mvs[0].y; |
1155 |
|
|
1156 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, mb->quant, 1); |
1157 |
continue; |
continue; |
1158 |
} |
} |
|
//t=BitstreamShowBits(bs,32); |
|
1159 |
|
|
1160 |
if (!BitstreamGetBit(bs)) { // modb=='0' |
if (!BitstreamGetBit(bs)) { // modb=='0' |
1161 |
const uint8_t modb2 = BitstreamGetBit(bs); |
const uint8_t modb2 = BitstreamGetBit(bs); |
1175 |
} else if (quant < 1) { |
} else if (quant < 1) { |
1176 |
quant = 1; |
quant = 1; |
1177 |
} |
} |
|
} else { |
|
|
quant = 8; |
|
1178 |
} |
} |
|
mb->quant = quant; |
|
1179 |
} else { |
} else { |
1180 |
mb->mb_type = MODE_DIRECT_NONE_MV; |
mb->mb_type = MODE_DIRECT_NONE_MV; |
1181 |
mb->cbp = 0; |
mb->cbp = 0; |
1182 |
} |
} |
1183 |
|
|
1184 |
mb->mode = MODE_INTER; |
mb->quant = quant; |
1185 |
|
mb->mode = MODE_INTER4V; |
1186 |
//DEBUG1("Switch bm_type=",mb->mb_type); |
//DEBUG1("Switch bm_type=",mb->mb_type); |
1187 |
|
|
1188 |
|
#ifdef BFRAMES_DEC_DEBUG |
1189 |
|
BFRAME_DEBUG |
1190 |
|
#endif |
1191 |
switch (mb->mb_type) { |
switch (mb->mb_type) { |
1192 |
case MODE_DIRECT: |
case MODE_DIRECT: |
1193 |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], 1, zeromv); |
get_b_motion_vector(dec, bs, x, y, &mv, 1, zeromv); |
1194 |
|
|
1195 |
case MODE_DIRECT_NONE_MV: |
case MODE_DIRECT_NONE_MV: |
1196 |
{ // Because this file is a C file not C++ so I use '{' to define var |
{ // Because this file is a C file not C++ so I use '{' to define var |
1197 |
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = |
const int64_t TRB = dec->time_pp - dec->time_bp, TRD = dec->time_pp; |
|
dec->time_pp; |
|
1198 |
int i; |
int i; |
1199 |
|
|
1200 |
for (i = 0; i < 4; i++) { |
for (i = 0; i < 4; i++) { |
1201 |
mb->mvs[i].x = |
mb->mvs[i].x = (int32_t) ((TRB * last_mb->mvs[i].x) |
1202 |
(int32_t) ((TRB * last_mb->mvs[i].x) / TRD + |
/ TRD + mv.x); |
1203 |
mb->mvs[0].x); |
mb->b_mvs[i].x = (int32_t) ((mv.x == 0) |
1204 |
mb->b_mvs[i].x = |
? ((TRB - TRD) * last_mb->mvs[i].x) |
1205 |
(int32_t) ((mb->mvs[0].x == |
/ TRD |
1206 |
0) ? ((TRB - |
: mb->mvs[i].x - last_mb->mvs[i].x); |
1207 |
TRD) * last_mb->mvs[i].x) / |
mb->mvs[i].y = (int32_t) ((TRB * last_mb->mvs[i].y) |
1208 |
TRD : mb->mvs[i].x - last_mb->mvs[i].x); |
/ TRD + mv.y); |
1209 |
mb->mvs[i].y = |
mb->b_mvs[i].y = (int32_t) ((mv.y == 0) |
1210 |
(int32_t) ((TRB * last_mb->mvs[i].y) / TRD + |
? ((TRB - TRD) * last_mb->mvs[i].y) |
1211 |
mb->mvs[0].y); |
/ TRD |
1212 |
mb->b_mvs[i].y = |
: mb->mvs[i].y - last_mb->mvs[i].y); |
|
(int32_t) ((mb->mvs[0].y == |
|
|
0) ? ((TRB - |
|
|
TRD) * last_mb->mvs[i].y) / |
|
|
TRD : mb->mvs[i].y - last_mb->mvs[i].y); |
|
1213 |
} |
} |
1214 |
//DEBUG("B-frame Direct!\n"); |
//DEBUG("B-frame Direct!\n"); |
1215 |
} |
} |
|
mb->mode = MODE_INTER4V; |
|
1216 |
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1217 |
mb, x, y, mb->cbp, bs); |
mb, x, y, bs); |
1218 |
break; |
break; |
1219 |
|
|
1220 |
case MODE_INTERPOLATE: |
case MODE_INTERPOLATE: |
1221 |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1222 |
dec->p_fmv); |
dec->p_fmv); |
1223 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
|
mb->mvs[0].x; |
|
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
|
|
mb->mvs[0].y; |
|
1224 |
|
|
1225 |
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
get_b_motion_vector(dec, bs, x, y, &mb->b_mvs[0], |
1226 |
fcode_backward, dec->p_bmv); |
fcode_backward, dec->p_bmv); |
1227 |
dec->p_bmv.x = mb->b_mvs[1].x = mb->b_mvs[2].x = |
dec->p_bmv = mb->b_mvs[1] = mb->b_mvs[2] = |
1228 |
mb->b_mvs[3].x = mb->b_mvs[0].x; |
mb->b_mvs[3] = mb->b_mvs[0]; |
|
dec->p_bmv.y = mb->b_mvs[1].y = mb->b_mvs[2].y = |
|
|
mb->b_mvs[3].y = mb->b_mvs[0].y; |
|
1229 |
|
|
1230 |
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
decoder_bf_interpolate_mbinter(dec, dec->refn[1], dec->refn[0], |
1231 |
mb, x, y, mb->cbp, bs); |
mb, x, y, bs); |
1232 |
//DEBUG("B-frame Bidir!\n"); |
//DEBUG("B-frame Bidir!\n"); |
1233 |
break; |
break; |
1234 |
|
|
1235 |
case MODE_BACKWARD: |
case MODE_BACKWARD: |
1236 |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_backward, |
1237 |
dec->p_bmv); |
dec->p_bmv); |
1238 |
dec->p_bmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
dec->p_bmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
|
mb->mvs[0].x; |
|
|
dec->p_bmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
|
|
mb->mvs[0].y; |
|
1239 |
|
|
1240 |
|
mb->mode = MODE_INTER; |
1241 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 0); |
1242 |
//DEBUG("B-frame Backward!\n"); |
//DEBUG("B-frame Backward!\n"); |
1243 |
break; |
break; |
1245 |
case MODE_FORWARD: |
case MODE_FORWARD: |
1246 |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
get_b_motion_vector(dec, bs, x, y, &mb->mvs[0], fcode_forward, |
1247 |
dec->p_fmv); |
dec->p_fmv); |
1248 |
dec->p_fmv.x = mb->mvs[1].x = mb->mvs[2].x = mb->mvs[3].x = |
dec->p_fmv = mb->mvs[1] = mb->mvs[2] = mb->mvs[3] = mb->mvs[0]; |
|
mb->mvs[0].x; |
|
|
dec->p_fmv.y = mb->mvs[1].y = mb->mvs[2].y = mb->mvs[3].y = |
|
|
mb->mvs[0].y; |
|
1249 |
|
|
1250 |
|
mb->mode = MODE_INTER; |
1251 |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
decoder_bf_mbinter(dec, mb, x, y, mb->cbp, bs, quant, 1); |
1252 |
//DEBUG("B-frame Forward!\n"); |
//DEBUG("B-frame Forward!\n"); |
1253 |
break; |
break; |
1254 |
|
|
1255 |
default: |
default: |
1256 |
DEBUG1("Not support B-frame mb_type =", mb->mb_type); |
//DEBUG1("Not support B-frame mb_type =", mb->mb_type); |
1257 |
|
; |
1258 |
} |
} |
1259 |
|
|
1260 |
} // end of FOR |
} // end of FOR |
1261 |
} |
} |
1262 |
|
#ifdef BFRAMES_DEC_DEBUG |
1263 |
|
if (!first){ |
1264 |
|
first=1; |
1265 |
|
if (fp) |
1266 |
|
fclose(fp); |
1267 |
|
} |
1268 |
|
#endif |
1269 |
} |
} |
1270 |
|
|
1271 |
// swap two MACROBLOCK array |
// swap two MACROBLOCK array |
1294 |
|
|
1295 |
start_global_timer(); |
start_global_timer(); |
1296 |
|
|
1297 |
|
dec->out_frm = (frame->colorspace == XVID_CSP_EXTERN) ? frame->image : NULL; |
1298 |
|
|
1299 |
BitstreamInit(&bs, frame->bitstream, frame->length); |
BitstreamInit(&bs, frame->bitstream, frame->length); |
1300 |
|
|
1301 |
// add by chenm001 <chenm001@163.com> |
// add by chenm001 <chenm001@163.com> |
1345 |
return XVID_ERR_FAIL; |
return XVID_ERR_FAIL; |
1346 |
} |
} |
1347 |
|
|
1348 |
|
#ifdef BFRAMES_DEC_DEBUG |
1349 |
|
if (frame->length != BitstreamPos(&bs) / 8){ |
1350 |
|
DEBUG2("InLen/UseLen",frame->length, BitstreamPos(&bs) / 8); |
1351 |
|
} |
1352 |
|
#endif |
1353 |
frame->length = BitstreamPos(&bs) / 8; |
frame->length = BitstreamPos(&bs) / 8; |
1354 |
|
|
1355 |
|
|
1356 |
#ifdef BFRAMES_DEC |
#ifdef BFRAMES_DEC |
1357 |
// test if no B_VOP |
// test if no B_VOP |
1358 |
if (dec->low_delay) { |
if (dec->low_delay) { |
1359 |
#endif |
#endif |
1360 |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
image_output(&dec->cur, dec->width, dec->height, dec->edged_width, |
1361 |
frame->image, frame->stride, frame->colorspace); |
frame->image, frame->stride, frame->colorspace); |
1362 |
|
|
1363 |
#ifdef BFRAMES_DEC |
#ifdef BFRAMES_DEC |
1364 |
} else { |
} else { |
1365 |
if (dec->frames >= 1) { |
if (dec->frames >= 0) { |
1366 |
start_timer(); |
start_timer(); |
1367 |
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
if ((vop_type == I_VOP || vop_type == P_VOP)) { |
1368 |
image_output(&dec->refn[0], dec->width, dec->height, |
image_output(&dec->refn[0], dec->width, dec->height, |
1381 |
if (vop_type == I_VOP || vop_type == P_VOP) { |
if (vop_type == I_VOP || vop_type == P_VOP) { |
1382 |
image_swap(&dec->refn[0], &dec->refn[1]); |
image_swap(&dec->refn[0], &dec->refn[1]); |
1383 |
image_swap(&dec->cur, &dec->refn[0]); |
image_swap(&dec->cur, &dec->refn[0]); |
1384 |
|
|
1385 |
// swap MACROBLOCK |
// swap MACROBLOCK |
1386 |
if (dec->low_delay && vop_type == P_VOP) |
// the Divx will not set the low_delay flage some times |
1387 |
|
// so follow code will wrong to not swap at that time |
1388 |
|
// this will broken bitstream! so I'm change it, |
1389 |
|
// But that is not the best way! can anyone tell me how |
1390 |
|
// to do another way? |
1391 |
|
// 18-07-2002 MinChen<chenm001@163.com> |
1392 |
|
//if (!dec->low_delay && vop_type == P_VOP) |
1393 |
|
if (vop_type == P_VOP) |
1394 |
mb_swap(&dec->mbs, &dec->last_mbs); |
mb_swap(&dec->mbs, &dec->last_mbs); |
1395 |
} |
} |
1396 |
|
|