/*
* H263/MPEG4 backend for ffmpeg encoder and decoder
- * Copyright (c) 2000,2001 Gerard Lantau.
+ * Copyright (c) 2000,2001 Fabrice Bellard.
* H263+ support.
* Copyright (c) 2001 Juan J. Sierralta P.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
+ * This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * ac prediction encoding, b-frame support, error resilience, optimizations,
+ * qpel decoding, gmc decoding, interlaced decoding,
+ * by Michael Niedermayer <michaelni@gmx.at>
*/
+
+//#define DEBUG
#include "common.h"
#include "dsputil.h"
#include "avcodec.h"
#include "h263data.h"
#include "mpeg4data.h"
+//#undef NDEBUG
+//#include <assert.h>
+
//rounded divison & shift
-#define RDIV(a,b) ((a) > 0 ? ((a)+((b)>>1))/(b) : ((a)-((b)>>1))/(b))
#define RSHIFT(a,b) ((a) > 0 ? ((a) + (1<<((b)-1)))>>(b) : ((a) + (1<<((b)-1))-1)>>(b))
-#define ABS(a) (((a)>=0)?(a):(-(a)))
+
+#if 1
+#define PRINT_MB_TYPE(a) {}
+#else
+#define PRINT_MB_TYPE(a) printf(a)
+#endif
+
+#define INTRA_MCBPC_VLC_BITS 6
+#define INTER_MCBPC_VLC_BITS 6
+#define CBPY_VLC_BITS 6
+#define MV_VLC_BITS 9
+#define DC_VLC_BITS 9
+#define SPRITE_TRAJ_VLC_BITS 6
+#define MB_TYPE_B_VLC_BITS 4
+#define TEX_VLC_BITS 9
static void h263_encode_block(MpegEncContext * s, DCTELEM * block,
int n);
-static void h263_encode_motion(MpegEncContext * s, int val);
+static void h263_encode_motion(MpegEncContext * s, int val, int fcode);
static void h263p_encode_umotion(MpegEncContext * s, int val);
-static void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block,
- int n, int dc, UINT8 *scan_table);
+static inline void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block,
+ int n, int dc, UINT8 *scan_table,
+ PutBitContext *dc_pb, PutBitContext *ac_pb);
static int h263_decode_motion(MpegEncContext * s, int pred, int fcode);
static int h263p_decode_umotion(MpegEncContext * s, int pred);
static int h263_decode_block(MpegEncContext * s, DCTELEM * block,
int n, int coded);
-static int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
- int n, int coded);
-static inline int mpeg4_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr, int *dir_ptr);
+static inline int mpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr);
+static inline int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
+ int n, int coded, int intra);
+static int h263_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr);
static void mpeg4_inv_pred_ac(MpegEncContext * s, INT16 *block, int n,
int dir);
+static void mpeg4_decode_sprite_trajectory(MpegEncContext * s);
extern UINT32 inverse[256];
+static UINT16 mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
+static UINT8 fcode_tab[MAX_MV*2+1];
+static UINT8 umv_fcode_tab[MAX_MV*2+1];
+
+static UINT16 uni_DCtab_lum [512][2];
+static UINT16 uni_DCtab_chrom[512][2];
+static UINT32 uni_mpeg4_intra_rl_bits[64*64*2*2];
+static UINT8 uni_mpeg4_intra_rl_len [64*64*2*2];
+static UINT32 uni_mpeg4_inter_rl_bits[64*64*2*2];
+static UINT8 uni_mpeg4_inter_rl_len [64*64*2*2];
+#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128 + (run)*256 + (level))
+//#define UNI_MPEG4_ENC_INDEX(last,run,level) ((last)*128*64 + (run) + (level)*64)
+
+/* mpeg4
+inter
+max level: 24/6
+max run: 53/63
+
+intra
+max level: 53/16
+max run: 29/41
+*/
+
int h263_get_picture_format(int width, int height)
{
int format;
if (width == 128 && height == 96)
- format = 1;
+ format = 1;
else if (width == 176 && height == 144)
- format = 2;
+ format = 2;
else if (width == 352 && height == 288)
- format = 3;
+ format = 3;
else if (width == 704 && height == 576)
- format = 4;
+ format = 4;
else if (width == 1408 && height == 1152)
- format = 5;
+ format = 5;
else
format = 7;
return format;
put_bits(&s->pb, 1, s->umvplus); /* Unrestricted Motion Vector */
put_bits(&s->pb,1,0); /* SAC: off */
put_bits(&s->pb,1,0); /* Advanced Prediction Mode: off */
- put_bits(&s->pb,1,0); /* Advanced Intra Coding: off */
+ put_bits(&s->pb,1,s->h263_aic); /* Advanced Intra Coding */
put_bits(&s->pb,1,0); /* Deblocking Filter: off */
put_bits(&s->pb,1,0); /* Slice Structured: off */
put_bits(&s->pb,1,0); /* Reference Picture Selection: off */
put_bits(&s->pb,1,0); /* Reference Picture Resampling: off */
put_bits(&s->pb,1,0); /* Reduced-Resolution Update: off */
- put_bits(&s->pb,1,0); /* Rounding Type */
+ if (s->pict_type == I_TYPE)
+ s->no_rounding = 0;
+ else
+ s->no_rounding ^= 1;
+ put_bits(&s->pb,1,s->no_rounding); /* Rounding Type */
put_bits(&s->pb,2,0); /* Reserved */
put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */
if (format == 7) {
/* Custom Picture Format (CPFMT) */
- put_bits(&s->pb,4,2); /* Aspect ratio: CIF 12:11 (4:3) picture */
+ if (s->aspect_ratio_info)
+ put_bits(&s->pb,4,s->aspect_ratio_info);
+ else
+ put_bits(&s->pb,4,2); /* Aspect ratio: CIF 12:11 (4:3) picture */
put_bits(&s->pb,9,(s->width >> 2) - 1);
put_bits(&s->pb,1,1); /* "1" to prevent start code emulation */
put_bits(&s->pb,9,(s->height >> 2));
+ if (s->aspect_ratio_info == FF_ASPECT_EXTENDED)
+ {
+ put_bits(&s->pb, 8, s->aspected_width);
+ put_bits(&s->pb, 8, s->aspected_height);
+ }
}
/* Unlimited Unrestricted Motion Vectors Indicator (UUI) */
}
put_bits(&s->pb, 1, 0); /* no PEI */
+
+ if(s->h263_aic){
+ s->y_dc_scale_table=
+ s->c_dc_scale_table= h263_aic_dc_scale_table;
+ }else{
+ s->y_dc_scale_table=
+ s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
+ }
}
int h263_encode_gob_header(MpegEncContext * s, int mb_line)
ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
ac_val1= ac_val;
if(dir[n]){
+ const int xy= s->mb_x + s->mb_y*s->mb_width - s->mb_width;
+ /* top prediction */
ac_val-= s->block_wrap[n]*16;
- for(i=1; i<8; i++){
- const int level= block[n][block_permute_op(i )];
- score0+= ABS(level);
- score1+= ABS(level - ac_val[i+8]);
- ac_val1[i ]= block[n][block_permute_op(i<<3)];
- ac_val1[i+8]= level;
+ if(s->mb_y==0 || s->qscale == s->qscale_table[xy] || n==2 || n==3){
+ /* same qscale */
+ for(i=1; i<8; i++){
+ const int level= block[n][block_permute_op(i )];
+ score0+= ABS(level);
+ score1+= ABS(level - ac_val[i+8]);
+ ac_val1[i ]= block[n][block_permute_op(i<<3)];
+ ac_val1[i+8]= level;
+ }
+ }else{
+ /* different qscale, we must rescale */
+ for(i=1; i<8; i++){
+ const int level= block[n][block_permute_op(i )];
+ score0+= ABS(level);
+ score1+= ABS(level - ROUNDED_DIV(ac_val[i + 8]*s->qscale_table[xy], s->qscale));
+ ac_val1[i ]= block[n][block_permute_op(i<<3)];
+ ac_val1[i+8]= level;
+ }
}
}else{
+ const int xy= s->mb_x-1 + s->mb_y*s->mb_width;
+ /* left prediction */
ac_val-= 16;
- for(i=1; i<8; i++){
- const int level= block[n][block_permute_op(i<<3)];
- score0+= ABS(level);
- score1+= ABS(level - ac_val[i]);
- ac_val1[i ]= level;
- ac_val1[i+8]= block[n][block_permute_op(i )];
+ if(s->mb_x==0 || s->qscale == s->qscale_table[xy] || n==1 || n==3){
+ /* same qscale */
+ for(i=1; i<8; i++){
+ const int level= block[n][block_permute_op(i<<3)];
+ score0+= ABS(level);
+ score1+= ABS(level - ac_val[i]);
+ ac_val1[i ]= level;
+ ac_val1[i+8]= block[n][block_permute_op(i )];
+ }
+ }else{
+ /* different qscale, we must rescale */
+ for(i=1; i<8; i++){
+ const int level= block[n][block_permute_op(i<<3)];
+ score0+= ABS(level);
+ score1+= ABS(level - ROUNDED_DIV(ac_val[i]*s->qscale_table[xy], s->qscale));
+ ac_val1[i ]= level;
+ ac_val1[i+8]= block[n][block_permute_op(i )];
+ }
}
}
}
return score0 > score1 ? 1 : 0;
}
+void ff_clean_h263_qscales(MpegEncContext *s){
+ int i;
+
+ for(i=1; i<s->mb_num; i++){
+ if(s->qscale_table[i] - s->qscale_table[i-1] >2)
+ s->qscale_table[i]= s->qscale_table[i-1]+2;
+ }
+ for(i=s->mb_num-2; i>=0; i--){
+ if(s->qscale_table[i] - s->qscale_table[i+1] >2)
+ s->qscale_table[i]= s->qscale_table[i+1]+2;
+ }
+}
+
+void ff_clean_mpeg4_qscales(MpegEncContext *s){
+ int i;
+
+ ff_clean_h263_qscales(s);
+
+ for(i=1; i<s->mb_num; i++){
+ if(s->qscale_table[i] != s->qscale_table[i-1] && (s->mb_type[i]&MB_TYPE_INTER4V)){
+ s->mb_type[i]&= ~MB_TYPE_INTER4V;
+ s->mb_type[i]|= MB_TYPE_INTER;
+ }
+ }
+
+ if(s->pict_type== B_TYPE){
+ int odd=0;
+ /* ok, come on, this isnt funny anymore, theres more code for handling this mpeg4 mess than
+ for the actual adaptive quantization */
+
+ for(i=0; i<s->mb_num; i++){
+ odd += s->qscale_table[i]&1;
+ }
+
+ if(2*odd > s->mb_num) odd=1;
+ else odd=0;
+
+ for(i=0; i<s->mb_num; i++){
+ if((s->qscale_table[i]&1) != odd)
+ s->qscale_table[i]++;
+ if(s->qscale_table[i] > 31)
+ s->qscale_table[i]= 31;
+ }
+
+ for(i=1; i<s->mb_num; i++){
+ if(s->qscale_table[i] != s->qscale_table[i-1] && (s->mb_type[i]&MB_TYPE_DIRECT)){
+ s->mb_type[i]&= ~MB_TYPE_DIRECT;
+ s->mb_type[i]|= MB_TYPE_BIDIR;
+ }
+ }
+ }
+}
+
void mpeg4_encode_mb(MpegEncContext * s,
DCTELEM block[6][64],
int motion_x, int motion_y)
{
- int cbpc, cbpy, i, cbp, pred_x, pred_y;
+ int cbpc, cbpy, i, pred_x, pred_y;
+ int bits;
+ PutBitContext * const pb2 = s->data_partitioning ? &s->pb2 : &s->pb;
+ PutBitContext * const tex_pb = s->data_partitioning && s->pict_type!=B_TYPE ? &s->tex_pb : &s->pb;
+ PutBitContext * const dc_pb = s->data_partitioning && s->pict_type!=I_TYPE ? &s->pb2 : &s->pb;
+ const int interleaved_stats= (s->flags&CODEC_FLAG_PASS1) && !s->data_partitioning ? 1 : 0;
+ const int dquant_code[5]= {1,0,9,2,3};
// printf("**mb x=%d y=%d\n", s->mb_x, s->mb_y);
if (!s->mb_intra) {
/* compute cbp */
- cbp = 0;
+ int cbp = 0;
for (i = 0; i < 6; i++) {
- if (s->block_last_index[i] >= 0)
- cbp |= 1 << (5 - i);
- }
- if ((cbp | motion_x | motion_y) == 0) {
- /* skip macroblock */
- put_bits(&s->pb, 1, 1);
- return;
+ if (s->block_last_index[i] >= 0)
+ cbp |= 1 << (5 - i);
}
- put_bits(&s->pb, 1, 0); /* mb coded */
- cbpc = cbp & 3;
- put_bits(&s->pb,
- inter_MCBPC_bits[cbpc],
- inter_MCBPC_code[cbpc]);
- cbpy = cbp >> 2;
- cbpy ^= 0xf;
- put_bits(&s->pb, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
- /* motion vectors: 16x16 mode only now */
- h263_pred_motion(s, 0, &pred_x, &pred_y);
-
- h263_encode_motion(s, motion_x - pred_x);
- h263_encode_motion(s, motion_y - pred_y);
+ if(s->pict_type==B_TYPE){
+ static const int mb_type_table[8]= {-1, 2, 3, 1,-1,-1,-1, 0}; /* convert from mv_dir to type */
+ int mb_type= mb_type_table[s->mv_dir];
+
+ if(s->mb_x==0){
+ s->last_mv[0][0][0]=
+ s->last_mv[0][0][1]=
+ s->last_mv[1][0][0]=
+ s->last_mv[1][0][1]= 0;
+ }
+
+ assert(s->dquant>=-2 && s->dquant<=2);
+ assert((s->dquant&1)==0);
+ assert(mb_type>=0);
+
+ /* nothing to do if this MB was skiped in the next P Frame */
+ if(s->mbskip_table[s->mb_y * s->mb_width + s->mb_x]){ //FIXME avoid DCT & ...
+ s->skip_count++;
+ s->mv[0][0][0]=
+ s->mv[0][0][1]=
+ s->mv[1][0][0]=
+ s->mv[1][0][1]= 0;
+ s->mv_dir= MV_DIR_FORWARD; //doesnt matter
+ s->qscale -= s->dquant;
+ return;
+ }
- /* encode each block */
- for (i = 0; i < 6; i++) {
- mpeg4_encode_block(s, block[i], i, 0, zigzag_direct);
+ if ((cbp | motion_x | motion_y | mb_type) ==0) {
+ /* direct MB with MV={0,0} */
+ assert(s->dquant==0);
+
+ put_bits(&s->pb, 1, 1); /* mb not coded modb1=1 */
+
+ if(interleaved_stats){
+ s->misc_bits++;
+ s->last_bits++;
+ }
+ s->skip_count++;
+ return;
+ }
+ put_bits(&s->pb, 1, 0); /* mb coded modb1=0 */
+ put_bits(&s->pb, 1, cbp ? 0 : 1); /* modb2 */ //FIXME merge
+ put_bits(&s->pb, mb_type+1, 1); // this table is so simple that we dont need it :)
+ if(cbp) put_bits(&s->pb, 6, cbp);
+
+ if(cbp && mb_type){
+ if(s->dquant)
+ put_bits(&s->pb, 2, (s->dquant>>2)+3);
+ else
+ put_bits(&s->pb, 1, 0);
+ }else
+ s->qscale -= s->dquant;
+
+ if(!s->progressive_sequence){
+ if(cbp)
+ put_bits(&s->pb, 1, s->interlaced_dct);
+ if(mb_type) // not diect mode
+ put_bits(&s->pb, 1, 0); // no interlaced ME yet
+ }
+
+ if(interleaved_stats){
+ bits= get_bit_count(&s->pb);
+ s->misc_bits+= bits - s->last_bits;
+ s->last_bits=bits;
+ }
+
+ switch(mb_type)
+ {
+ case 0: /* direct */
+ h263_encode_motion(s, motion_x, 1);
+ h263_encode_motion(s, motion_y, 1);
+ s->b_count++;
+ s->f_count++;
+ break;
+ case 1: /* bidir */
+ h263_encode_motion(s, s->mv[0][0][0] - s->last_mv[0][0][0], s->f_code);
+ h263_encode_motion(s, s->mv[0][0][1] - s->last_mv[0][0][1], s->f_code);
+ h263_encode_motion(s, s->mv[1][0][0] - s->last_mv[1][0][0], s->b_code);
+ h263_encode_motion(s, s->mv[1][0][1] - s->last_mv[1][0][1], s->b_code);
+ s->last_mv[0][0][0]= s->mv[0][0][0];
+ s->last_mv[0][0][1]= s->mv[0][0][1];
+ s->last_mv[1][0][0]= s->mv[1][0][0];
+ s->last_mv[1][0][1]= s->mv[1][0][1];
+ s->b_count++;
+ s->f_count++;
+ break;
+ case 2: /* backward */
+ h263_encode_motion(s, motion_x - s->last_mv[1][0][0], s->b_code);
+ h263_encode_motion(s, motion_y - s->last_mv[1][0][1], s->b_code);
+ s->last_mv[1][0][0]= motion_x;
+ s->last_mv[1][0][1]= motion_y;
+ s->b_count++;
+ break;
+ case 3: /* forward */
+ h263_encode_motion(s, motion_x - s->last_mv[0][0][0], s->f_code);
+ h263_encode_motion(s, motion_y - s->last_mv[0][0][1], s->f_code);
+ s->last_mv[0][0][0]= motion_x;
+ s->last_mv[0][0][1]= motion_y;
+ s->f_count++;
+ break;
+ default:
+ printf("unknown mb type\n");
+ return;
+ }
+
+ if(interleaved_stats){
+ bits= get_bit_count(&s->pb);
+ s->mv_bits+= bits - s->last_bits;
+ s->last_bits=bits;
+ }
+
+ /* encode each block */
+ for (i = 0; i < 6; i++) {
+ mpeg4_encode_block(s, block[i], i, 0, zigzag_direct, NULL, &s->pb);
+ }
+
+ if(interleaved_stats){
+ bits= get_bit_count(&s->pb);
+ s->p_tex_bits+= bits - s->last_bits;
+ s->last_bits=bits;
+ }
+ }else{ /* s->pict_type==B_TYPE */
+ if ((cbp | motion_x | motion_y | s->dquant) == 0 && s->mv_type==MV_TYPE_16X16) {
+ /* check if the B frames can skip it too, as we must skip it if we skip here
+ why didnt they just compress the skip-mb bits instead of reusing them ?! */
+ if(s->max_b_frames>0){
+ int i;
+ int x,y, offset;
+ uint8_t *p_pic;
+
+ x= s->mb_x*16;
+ y= s->mb_y*16;
+ if(x+16 > s->width) x= s->width-16;
+ if(y+16 > s->height) y= s->height-16;
+
+ offset= x + y*s->linesize;
+ p_pic= s->new_picture[0] + offset;
+
+ s->mb_skiped=1;
+ for(i=0; i<s->max_b_frames; i++){
+ uint8_t *b_pic;
+ int diff;
+
+ if(s->coded_order[i+1].pict_type!=B_TYPE) break;
+
+ b_pic= s->coded_order[i+1].picture[0] + offset;
+ diff= pix_abs16x16(p_pic, b_pic, s->linesize);
+ if(diff>s->qscale*70){ //FIXME check that 70 is optimal
+ s->mb_skiped=0;
+ break;
+ }
+ }
+ }else
+ s->mb_skiped=1;
+
+ if(s->mb_skiped==1){
+ /* skip macroblock */
+ put_bits(&s->pb, 1, 1);
+
+ if(interleaved_stats){
+ s->misc_bits++;
+ s->last_bits++;
+ }
+ s->skip_count++;
+ return;
+ }
+ }
+
+ put_bits(&s->pb, 1, 0); /* mb coded */
+ if(s->mv_type==MV_TYPE_16X16){
+ cbpc = cbp & 3;
+ if(s->dquant) cbpc+= 8;
+ put_bits(&s->pb,
+ inter_MCBPC_bits[cbpc],
+ inter_MCBPC_code[cbpc]);
+
+ cbpy = cbp >> 2;
+ cbpy ^= 0xf;
+ put_bits(pb2, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
+ if(s->dquant)
+ put_bits(pb2, 2, dquant_code[s->dquant+2]);
+
+ if(!s->progressive_sequence){
+ if(cbp)
+ put_bits(pb2, 1, s->interlaced_dct);
+ put_bits(pb2, 1, 0); // no interlaced ME yet
+ }
+
+ if(interleaved_stats){
+ bits= get_bit_count(&s->pb);
+ s->misc_bits+= bits - s->last_bits;
+ s->last_bits=bits;
+ }
+
+ /* motion vectors: 16x16 mode */
+ h263_pred_motion(s, 0, &pred_x, &pred_y);
+
+ h263_encode_motion(s, motion_x - pred_x, s->f_code);
+ h263_encode_motion(s, motion_y - pred_y, s->f_code);
+ }else{
+ cbpc = (cbp & 3)+16;
+ put_bits(&s->pb,
+ inter_MCBPC_bits[cbpc],
+ inter_MCBPC_code[cbpc]);
+ cbpy = cbp >> 2;
+ cbpy ^= 0xf;
+ put_bits(pb2, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
+
+ if(interleaved_stats){
+ bits= get_bit_count(&s->pb);
+ s->misc_bits+= bits - s->last_bits;
+ s->last_bits=bits;
+ }
+
+ for(i=0; i<4; i++){
+ /* motion vectors: 8x8 mode*/
+ h263_pred_motion(s, i, &pred_x, &pred_y);
+
+ h263_encode_motion(s, s->motion_val[ s->block_index[i] ][0] - pred_x, s->f_code);
+ h263_encode_motion(s, s->motion_val[ s->block_index[i] ][1] - pred_y, s->f_code);
+ }
+ }
+
+ if(interleaved_stats){
+ bits= get_bit_count(&s->pb);
+ s->mv_bits+= bits - s->last_bits;
+ s->last_bits=bits;
+ }
+
+ /* encode each block */
+ for (i = 0; i < 6; i++) {
+ mpeg4_encode_block(s, block[i], i, 0, zigzag_direct, NULL, tex_pb);
+ }
+
+ if(interleaved_stats){
+ bits= get_bit_count(&s->pb);
+ s->p_tex_bits+= bits - s->last_bits;
+ s->last_bits=bits;
+ }
+ s->f_count++;
}
} else {
+ int cbp;
int dc_diff[6]; //dc values with the dc prediction subtracted
int dir[6]; //prediction direction
int zigzag_last_index[6];
const int level= block[i][0];
UINT16 *dc_ptr;
- dc_diff[i]= level - mpeg4_pred_dc(s, i, &dc_ptr, &dir[i]);
+ dc_diff[i]= level - ff_mpeg4_pred_dc(s, i, &dc_ptr, &dir[i]);
if (i < 4) {
*dc_ptr = level * s->y_dc_scale;
} else {
cbpc = cbp & 3;
if (s->pict_type == I_TYPE) {
+ if(s->dquant) cbpc+=4;
put_bits(&s->pb,
intra_MCBPC_bits[cbpc],
intra_MCBPC_code[cbpc]);
} else {
+ if(s->dquant) cbpc+=8;
put_bits(&s->pb, 1, 0); /* mb coded */
put_bits(&s->pb,
inter_MCBPC_bits[cbpc + 4],
inter_MCBPC_code[cbpc + 4]);
}
- put_bits(&s->pb, 1, s->ac_pred);
+ put_bits(pb2, 1, s->ac_pred);
cbpy = cbp >> 2;
- put_bits(&s->pb, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
+ put_bits(pb2, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
+ if(s->dquant)
+ put_bits(dc_pb, 2, dquant_code[s->dquant+2]);
+
+ if(!s->progressive_sequence){
+ put_bits(dc_pb, 1, s->interlaced_dct);
+ }
+
+ if(interleaved_stats){
+ bits= get_bit_count(&s->pb);
+ s->misc_bits+= bits - s->last_bits;
+ s->last_bits=bits;
+ }
/* encode each block */
for (i = 0; i < 6; i++) {
- mpeg4_encode_block(s, block[i], i, dc_diff[i], scan_table[i]);
+ mpeg4_encode_block(s, block[i], i, dc_diff[i], scan_table[i], dc_pb, tex_pb);
}
+ if(interleaved_stats){
+ bits= get_bit_count(&s->pb);
+ s->i_tex_bits+= bits - s->last_bits;
+ s->last_bits=bits;
+ }
+ s->i_count++;
+
/* restore ac coeffs & last_index stuff if we messed them up with the prediction */
if(s->ac_pred){
for(i=0; i<6; i++){
int motion_x, int motion_y)
{
int cbpc, cbpy, i, cbp, pred_x, pred_y;
-
- // printf("**mb x=%d y=%d\n", s->mb_x, s->mb_y);
- if (!s->mb_intra) {
- /* compute cbp */
- cbp = 0;
- for (i = 0; i < 6; i++) {
- if (s->block_last_index[i] >= 0)
- cbp |= 1 << (5 - i);
- }
- if ((cbp | motion_x | motion_y) == 0) {
- /* skip macroblock */
- put_bits(&s->pb, 1, 1);
- return;
- }
- put_bits(&s->pb, 1, 0); /* mb coded */
- cbpc = cbp & 3;
- put_bits(&s->pb,
- inter_MCBPC_bits[cbpc],
- inter_MCBPC_code[cbpc]);
- cbpy = cbp >> 2;
- cbpy ^= 0xf;
- put_bits(&s->pb, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
-
- /* motion vectors: 16x16 mode only now */
- h263_pred_motion(s, 0, &pred_x, &pred_y);
+ INT16 pred_dc;
+ INT16 rec_intradc[6];
+ UINT16 *dc_ptr[6];
+ const int dquant_code[5]= {1,0,9,2,3};
+
+ //printf("**mb x=%d y=%d\n", s->mb_x, s->mb_y);
+ if (!s->mb_intra) {
+ /* compute cbp */
+ cbp = 0;
+ for (i = 0; i < 6; i++) {
+ if (s->block_last_index[i] >= 0)
+ cbp |= 1 << (5 - i);
+ }
+ if ((cbp | motion_x | motion_y | s->dquant) == 0) {
+ /* skip macroblock */
+ put_bits(&s->pb, 1, 1);
+ return;
+ }
+ put_bits(&s->pb, 1, 0); /* mb coded */
+ cbpc = cbp & 3;
+ if(s->dquant) cbpc+= 8;
+ put_bits(&s->pb,
+ inter_MCBPC_bits[cbpc],
+ inter_MCBPC_code[cbpc]);
+ cbpy = cbp >> 2;
+ cbpy ^= 0xf;
+ put_bits(&s->pb, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
+ if(s->dquant)
+ put_bits(&s->pb, 2, dquant_code[s->dquant+2]);
+
+ /* motion vectors: 16x16 mode only now */
+ h263_pred_motion(s, 0, &pred_x, &pred_y);
- if (!s->umvplus) {
- h263_encode_motion(s, motion_x - pred_x);
- h263_encode_motion(s, motion_y - pred_y);
- }
- else {
- h263p_encode_umotion(s, motion_x - pred_x);
- h263p_encode_umotion(s, motion_y - pred_y);
- if (((motion_x - pred_x) == 1) && ((motion_y - pred_y) == 1))
- /* To prevent Start Code emulation */
- put_bits(&s->pb,1,1);
- }
- } else {
- /* compute cbp */
- cbp = 0;
- for (i = 0; i < 6; i++) {
- if (s->block_last_index[i] >= 1)
- cbp |= 1 << (5 - i);
- }
+ if (!s->umvplus) {
+ h263_encode_motion(s, motion_x - pred_x, s->f_code);
+ h263_encode_motion(s, motion_y - pred_y, s->f_code);
+ }
+ else {
+ h263p_encode_umotion(s, motion_x - pred_x);
+ h263p_encode_umotion(s, motion_y - pred_y);
+ if (((motion_x - pred_x) == 1) && ((motion_y - pred_y) == 1))
+ /* To prevent Start Code emulation */
+ put_bits(&s->pb,1,1);
+ }
+ } else {
+ int li = s->h263_aic ? 0 : 1;
+
+ cbp = 0;
+ for(i=0; i<6; i++) {
+ /* Predict DC */
+ if (s->h263_aic && s->mb_intra) {
+ INT16 level = block[i][0];
+
+ pred_dc = h263_pred_dc(s, i, &dc_ptr[i]);
+ level -= pred_dc;
+ /* Quant */
+ if (level < 0)
+ level = (level + (s->qscale >> 1))/(s->y_dc_scale);
+ else
+ level = (level - (s->qscale >> 1))/(s->y_dc_scale);
+
+ /* AIC can change CBP */
+ if (level == 0 && s->block_last_index[i] == 0)
+ s->block_last_index[i] = -1;
+ else if (level < -127)
+ level = -127;
+ else if (level > 127)
+ level = 127;
+
+ block[i][0] = level;
+ /* Reconstruction */
+ rec_intradc[i] = (s->y_dc_scale*level) + pred_dc;
+ /* Oddify */
+ rec_intradc[i] |= 1;
+ //if ((rec_intradc[i] % 2) == 0)
+ // rec_intradc[i]++;
+ /* Clipping */
+ if (rec_intradc[i] < 0)
+ rec_intradc[i] = 0;
+ else if (rec_intradc[i] > 2047)
+ rec_intradc[i] = 2047;
+
+ /* Update AC/DC tables */
+ *dc_ptr[i] = rec_intradc[i];
+ }
+ /* compute cbp */
+ if (s->block_last_index[i] >= li)
+ cbp |= 1 << (5 - i);
+ }
- cbpc = cbp & 3;
- if (s->pict_type == I_TYPE) {
- put_bits(&s->pb,
- intra_MCBPC_bits[cbpc],
- intra_MCBPC_code[cbpc]);
- } else {
- put_bits(&s->pb, 1, 0); /* mb coded */
- put_bits(&s->pb,
- inter_MCBPC_bits[cbpc + 4],
- inter_MCBPC_code[cbpc + 4]);
- }
- if (s->h263_pred) {
- /* XXX: currently, we do not try to use ac prediction */
- put_bits(&s->pb, 1, 0); /* no ac prediction */
- }
- cbpy = cbp >> 2;
- put_bits(&s->pb, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
+ cbpc = cbp & 3;
+ if (s->pict_type == I_TYPE) {
+ if(s->dquant) cbpc+=4;
+ put_bits(&s->pb,
+ intra_MCBPC_bits[cbpc],
+ intra_MCBPC_code[cbpc]);
+ } else {
+ if(s->dquant) cbpc+=8;
+ put_bits(&s->pb, 1, 0); /* mb coded */
+ put_bits(&s->pb,
+ inter_MCBPC_bits[cbpc + 4],
+ inter_MCBPC_code[cbpc + 4]);
+ }
+ if (s->h263_aic) {
+ /* XXX: currently, we do not try to use ac prediction */
+ put_bits(&s->pb, 1, 0); /* no AC prediction */
+ }
+ cbpy = cbp >> 2;
+ put_bits(&s->pb, cbpy_tab[cbpy][1], cbpy_tab[cbpy][0]);
+ if(s->dquant)
+ put_bits(&s->pb, 2, dquant_code[s->dquant+2]);
}
- /* encode each block */
- if (s->h263_pred) {
- for (i = 0; i < 6; i++) {
-// mpeg4_encode_block(s, block[i], i);
- }
+ for(i=0; i<6; i++) {
+ /* encode each block */
+ h263_encode_block(s, block[i], i);
+
+ /* Update INTRADC for decoding */
+ if (s->h263_aic && s->mb_intra) {
+ block[i][0] = rec_intradc[i];
+
+ }
+ }
+}
+
+static int h263_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr)
+{
+ int x, y, wrap, a, c, pred_dc, scale;
+ INT16 *dc_val, *ac_val;
+
+ /* find prediction */
+ if (n < 4) {
+ x = 2 * s->mb_x + 1 + (n & 1);
+ y = 2 * s->mb_y + 1 + ((n & 2) >> 1);
+ wrap = s->mb_width * 2 + 2;
+ dc_val = s->dc_val[0];
+ ac_val = s->ac_val[0][0];
+ scale = s->y_dc_scale;
} else {
- for (i = 0; i < 6; i++) {
- h263_encode_block(s, block[i], i);
- }
+ x = s->mb_x + 1;
+ y = s->mb_y + 1;
+ wrap = s->mb_width + 2;
+ dc_val = s->dc_val[n - 4 + 1];
+ ac_val = s->ac_val[n - 4 + 1][0];
+ scale = s->c_dc_scale;
}
+ /* B C
+ * A X
+ */
+ a = dc_val[(x - 1) + (y) * wrap];
+ c = dc_val[(x) + (y - 1) * wrap];
+
+ /* No prediction outside GOB boundary */
+ if (s->first_slice_line && ((n < 2) || (n > 3)))
+ c = 1024;
+ pred_dc = 1024;
+ /* just DC prediction */
+ if (a != 1024 && c != 1024)
+ pred_dc = (a + c) >> 1;
+ else if (a != 1024)
+ pred_dc = a;
+ else
+ pred_dc = c;
+
+ /* we assume pred is positive */
+ //pred_dc = (pred_dc + (scale >> 1)) / scale;
+ *dc_val_ptr = &dc_val[x + y * wrap];
+ return pred_dc;
}
+
void h263_pred_acdc(MpegEncContext * s, INT16 *block, int n)
{
int x, y, wrap, a, c, pred_dc, scale, i;
a = dc_val[(x - 1) + (y) * wrap];
c = dc_val[(x) + (y - 1) * wrap];
+ /* No prediction outside GOB boundary */
+ if (s->first_slice_line && ((n < 2) || (n > 3)))
+ c = 1024;
pred_dc = 1024;
if (s->ac_pred) {
if (s->h263_aic_dir) {
ac_val1[8 + i] = block[block_permute_op(i)];
}
-
-static inline int mid_pred(int a, int b, int c)
-{
- int vmin, vmax;
- vmax = vmin = a;
- if (b < vmin)
- vmin = b;
- else
- vmax = b;
-
- if (c < vmin)
- vmin = c;
- else if (c > vmax)
- vmax = c;
-
- return a + b + c - vmin - vmax;
-}
-
INT16 *h263_pred_motion(MpegEncContext * s, int block,
int *px, int *py)
{
mot_val = s->motion_val[xy];
- /* special case for first line */
- if ((s->mb_y == 0 || s->first_slice_line || s->first_gob_line) && block<2) {
- A = s->motion_val[xy - 1];
- *px = A[0];
- *py = A[1];
+ A = s->motion_val[xy - 1];
+ /* special case for first (slice) line */
+ if ((s->mb_y == 0 || s->first_slice_line) && block<3) {
+ // we cant just change some MVs to simulate that as we need them for the B frames (and ME)
+ // and if we ever support non rectangular objects than we need to do a few ifs here anyway :(
+ if(block==0){ //most common case
+ if(s->mb_x == s->resync_mb_x){ //rare
+ *px= *py = 0;
+ }else if(s->mb_x + 1 == s->resync_mb_x){ //rare
+ C = s->motion_val[xy + off[block] - wrap];
+ if(s->mb_x==0){
+ *px = C[0];
+ *py = C[1];
+ }else{
+ *px = mid_pred(A[0], 0, C[0]);
+ *py = mid_pred(A[1], 0, C[1]);
+ }
+ }else{
+ *px = A[0];
+ *py = A[1];
+ }
+ }else if(block==1){
+ if(s->mb_x + 1 == s->resync_mb_x){ //rare
+ C = s->motion_val[xy + off[block] - wrap];
+ *px = mid_pred(A[0], 0, C[0]);
+ *py = mid_pred(A[1], 0, C[1]);
+ }else{
+ *px = A[0];
+ *py = A[1];
+ }
+ }else{ /* block==2*/
+ B = s->motion_val[xy - wrap];
+ C = s->motion_val[xy + off[block] - wrap];
+ if(s->mb_x == s->resync_mb_x) //rare
+ A[0]=A[1]=0;
+
+ *px = mid_pred(A[0], B[0], C[0]);
+ *py = mid_pred(A[1], B[1], C[1]);
+ }
} else {
- A = s->motion_val[xy - 1];
B = s->motion_val[xy - wrap];
C = s->motion_val[xy + off[block] - wrap];
*px = mid_pred(A[0], B[0], C[0]);
return mot_val;
}
-static void h263_encode_motion(MpegEncContext * s, int val)
+static void h263_encode_motion(MpegEncContext * s, int val, int f_code)
{
int range, l, m, bit_size, sign, code, bits;
code = 0;
put_bits(&s->pb, mvtab[code][1], mvtab[code][0]);
} else {
- bit_size = s->f_code - 1;
+ bit_size = f_code - 1;
range = 1 << bit_size;
/* modulo encoding */
l = range * 32;
} else if (val >= l) {
val -= m;
}
+ assert(val>=-l && val<l);
if (val >= 0) {
- val--;
- code = (val >> bit_size) + 1;
- bits = val & (range - 1);
sign = 0;
} else {
val = -val;
- val--;
- code = (val >> bit_size) + 1;
- bits = val & (range - 1);
sign = 1;
}
+ val--;
+ code = (val >> bit_size) + 1;
+ bits = val & (range - 1);
put_bits(&s->pb, mvtab[code][1] + 1, (mvtab[code][0] << 1) | sign);
if (bit_size > 0) {
}
}
-void h263_encode_init_vlc(MpegEncContext *s)
+static void init_mv_penalty_and_fcode(MpegEncContext *s)
{
- static int done = 0;
+ int f_code;
+ int mv;
+ for(f_code=1; f_code<=MAX_FCODE; f_code++){
+ for(mv=-MAX_MV; mv<=MAX_MV; mv++){
+ int len;
- if (!done) {
- done = 1;
- init_rl(&rl_inter);
- init_rl(&rl_intra);
+ if(mv==0) len= mvtab[0][1];
+ else{
+ int val, bit_size, range, code;
+
+ bit_size = s->f_code - 1;
+ range = 1 << bit_size;
+
+ val=mv;
+ if (val < 0)
+ val = -val;
+ val--;
+ code = (val >> bit_size) + 1;
+ if(code<33){
+ len= mvtab[code][1] + 1 + bit_size;
+ }else{
+ len= mvtab[32][1] + 2 + bit_size;
+ }
+ }
+
+ mv_penalty[f_code][mv+MAX_MV]= len;
+ }
+ }
+
+ for(f_code=MAX_FCODE; f_code>0; f_code--){
+ for(mv=-(16<<f_code); mv<(16<<f_code); mv++){
+ fcode_tab[mv+MAX_MV]= f_code;
+ }
+ }
+
+ for(mv=0; mv<MAX_MV*2+1; mv++){
+ umv_fcode_tab[mv]= 1;
}
}
-static void h263_encode_block(MpegEncContext * s, DCTELEM * block, int n)
+static void init_uni_dc_tab(void)
{
- int level, run, last, i, j, last_index, last_non_zero, sign, slevel;
- int code;
- RLTable *rl = &rl_inter;
-
- if (s->mb_intra) {
- /* DC coef */
- level = block[0];
- /* 255 cannot be represented, so we clamp */
- if (level > 254) {
- level = 254;
- block[0] = 254;
+ int level, uni_code, uni_len;
+
+ for(level=-256; level<256; level++){
+ int size, v, l;
+ /* find number of bits */
+ size = 0;
+ v = abs(level);
+ while (v) {
+ v >>= 1;
+ size++;
}
- /* 0 cannot be represented also */
- else if (!level) {
- level = 1;
- block[0] = 1;
+
+ if (level < 0)
+ l= (-level) ^ ((1 << size) - 1);
+ else
+ l= level;
+
+ /* luminance */
+ uni_code= DCtab_lum[size][0];
+ uni_len = DCtab_lum[size][1];
+
+ if (size > 0) {
+ uni_code<<=size; uni_code|=l;
+ uni_len+=size;
+ if (size > 8){
+ uni_code<<=1; uni_code|=1;
+ uni_len++;
+ }
}
- if (level == 128)
+ uni_DCtab_lum[level+256][0]= uni_code;
+ uni_DCtab_lum[level+256][1]= uni_len;
+
+ /* chrominance */
+ uni_code= DCtab_chrom[size][0];
+ uni_len = DCtab_chrom[size][1];
+
+ if (size > 0) {
+ uni_code<<=size; uni_code|=l;
+ uni_len+=size;
+ if (size > 8){
+ uni_code<<=1; uni_code|=1;
+ uni_len++;
+ }
+ }
+ uni_DCtab_chrom[level+256][0]= uni_code;
+ uni_DCtab_chrom[level+256][1]= uni_len;
+
+ }
+}
+
+static void init_uni_mpeg4_rl_tab(RLTable *rl, UINT32 *bits_tab, UINT8 *len_tab){
+ int slevel, run, last;
+
+ assert(MAX_LEVEL >= 64);
+ assert(MAX_RUN >= 63);
+
+ for(slevel=-64; slevel<64; slevel++){
+ if(slevel==0) continue;
+ for(run=0; run<64; run++){
+ for(last=0; last<=1; last++){
+ const int index= UNI_MPEG4_ENC_INDEX(last, run, slevel+64);
+ int level= slevel < 0 ? -slevel : slevel;
+ int sign= slevel < 0 ? 1 : 0;
+ int bits, len, code;
+ int level1, run1;
+
+ len_tab[index]= 100;
+
+ /* ESC0 */
+ code= get_rl_index(rl, last, run, level);
+ bits= rl->table_vlc[code][0];
+ len= rl->table_vlc[code][1];
+ bits=bits*2+sign; len++;
+
+ if(code!=rl->n && len < len_tab[index]){
+ bits_tab[index]= bits;
+ len_tab [index]= len;
+ }
+#if 1
+ /* ESC1 */
+ bits= rl->table_vlc[rl->n][0];
+ len= rl->table_vlc[rl->n][1];
+ bits=bits*2; len++; //esc1
+ level1= level - rl->max_level[last][run];
+ if(level1>0){
+ code= get_rl_index(rl, last, run, level1);
+ bits<<= rl->table_vlc[code][1];
+ len += rl->table_vlc[code][1];
+ bits += rl->table_vlc[code][0];
+ bits=bits*2+sign; len++;
+
+ if(code!=rl->n && len < len_tab[index]){
+ bits_tab[index]= bits;
+ len_tab [index]= len;
+ }
+ }
+#endif
+#if 1
+ /* ESC2 */
+ bits= rl->table_vlc[rl->n][0];
+ len= rl->table_vlc[rl->n][1];
+ bits=bits*4+2; len+=2; //esc2
+ run1 = run - rl->max_run[last][level] - 1;
+ if(run1>=0){
+ code= get_rl_index(rl, last, run1, level);
+ bits<<= rl->table_vlc[code][1];
+ len += rl->table_vlc[code][1];
+ bits += rl->table_vlc[code][0];
+ bits=bits*2+sign; len++;
+
+ if(code!=rl->n && len < len_tab[index]){
+ bits_tab[index]= bits;
+ len_tab [index]= len;
+ }
+ }
+#endif
+ /* ESC3 */
+ bits= rl->table_vlc[rl->n][0];
+ len = rl->table_vlc[rl->n][1];
+ bits=bits*4+3; len+=2; //esc3
+ bits=bits*2+last; len++;
+ bits=bits*64+run; len+=6;
+ bits=bits*2+1; len++; //marker
+ bits=bits*4096+(slevel&0xfff); len+=12;
+ bits=bits*2+1; len++; //marker
+
+ if(len < len_tab[index]){
+ bits_tab[index]= bits;
+ len_tab [index]= len;
+ }
+ }
+ }
+ }
+}
+
+void h263_encode_init(MpegEncContext *s)
+{
+ static int done = 0;
+
+ if (!done) {
+ done = 1;
+
+ init_uni_dc_tab();
+
+ init_rl(&rl_inter);
+ init_rl(&rl_intra);
+ init_rl(&rl_intra_aic);
+
+ init_uni_mpeg4_rl_tab(&rl_intra, uni_mpeg4_intra_rl_bits, uni_mpeg4_intra_rl_len);
+ init_uni_mpeg4_rl_tab(&rl_inter, uni_mpeg4_inter_rl_bits, uni_mpeg4_inter_rl_len);
+
+ init_mv_penalty_and_fcode(s);
+ }
+ s->mv_penalty= mv_penalty; //FIXME exact table for msmpeg4 & h263p
+
+ // use fcodes >1 only for mpeg4 & h263 & h263p FIXME
+ switch(s->codec_id){
+ case CODEC_ID_MPEG4:
+ s->fcode_tab= fcode_tab;
+ s->min_qcoeff= -2048;
+ s->max_qcoeff= 2047;
+ break;
+ case CODEC_ID_H263P:
+ s->fcode_tab= umv_fcode_tab;
+ s->min_qcoeff= -128;
+ s->max_qcoeff= 127;
+ break;
+ //Note for mpeg4 & h263 the dc-scale table will be set per frame as needed later
+ default: //nothing needed default table allready set in mpegvideo.c
+ s->min_qcoeff= -128;
+ s->max_qcoeff= 127;
+ s->y_dc_scale_table=
+ s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
+ }
+
+ if(s->mpeg_quant){
+ s->intra_quant_bias= 3<<(QUANT_BIAS_SHIFT-3); //(a + x*3/8)/x
+ s->inter_quant_bias= 0;
+ }else{
+ s->intra_quant_bias=0;
+ s->inter_quant_bias=-(1<<(QUANT_BIAS_SHIFT-2)); //(a - x/4)/x
+ }
+}
+
+static void h263_encode_block(MpegEncContext * s, DCTELEM * block, int n)
+{
+ int level, run, last, i, j, last_index, last_non_zero, sign, slevel, code;
+ RLTable *rl;
+
+ rl = &rl_inter;
+ if (s->mb_intra && !s->h263_aic) {
+ /* DC coef */
+ level = block[0];
+ /* 255 cannot be represented, so we clamp */
+ if (level > 254) {
+ level = 254;
+ block[0] = 254;
+ }
+ /* 0 cannot be represented also */
+ else if (!level) {
+ level = 1;
+ block[0] = 1;
+ }
+ if (level == 128)
put_bits(&s->pb, 8, 0xff);
else
put_bits(&s->pb, 8, level & 0xff);
i = 1;
} else {
i = 0;
+ if (s->h263_aic && s->mb_intra)
+ rl = &rl_intra_aic;
}
-
+
/* AC coefs */
last_index = s->block_last_index[n];
last_non_zero = i - 1;
for (; i <= last_index; i++) {
- j = zigzag_direct[i];
- level = block[j];
- if (level) {
- run = i - last_non_zero - 1;
- last = (i == last_index);
- sign = 0;
- slevel = level;
- if (level < 0) {
- sign = 1;
- level = -level;
- }
+ j = zigzag_direct[i];
+ level = block[j];
+ if (level) {
+ run = i - last_non_zero - 1;
+ last = (i == last_index);
+ sign = 0;
+ slevel = level;
+ if (level < 0) {
+ sign = 1;
+ level = -level;
+ }
code = get_rl_index(rl, last, run, level);
put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
if (code == rl->n) {
} else {
put_bits(&s->pb, 1, sign);
}
- last_non_zero = i;
- }
+ last_non_zero = i;
+ }
}
}
/***************************************************/
-static void mpeg4_stuffing(PutBitContext * pbc)
+void ff_mpeg4_stuffing(PutBitContext * pbc)
{
int length;
put_bits(pbc, 1, 0);
length= (-get_bit_count(pbc))&7;
- put_bits(pbc, length, (1<<length)-1);
+ if(length) put_bits(pbc, length, (1<<length)-1);
}
-static void put_string(PutBitContext * pbc, char *s)
-{
- while(*s){
- put_bits(pbc, 8, *s);
- s++;
+/* must be called before writing the header */
+void ff_set_mpeg4_time(MpegEncContext * s, int picture_number){
+ int time_div, time_mod;
+
+ if(s->pict_type==I_TYPE){ //we will encode a vol header
+ s->time_increment_resolution= s->frame_rate/ff_gcd(s->frame_rate, FRAME_RATE_BASE);
+ if(s->time_increment_resolution>=256*256) s->time_increment_resolution= 256*128;
+
+ s->time_increment_bits = av_log2(s->time_increment_resolution - 1) + 1;
+ }
+
+ if(s->avctx->pts)
+ s->time= (s->avctx->pts*s->time_increment_resolution + 500*1000)/(1000*1000);
+ else
+ s->time= picture_number*(INT64)FRAME_RATE_BASE*s->time_increment_resolution/s->frame_rate;
+ time_div= s->time/s->time_increment_resolution;
+ time_mod= s->time%s->time_increment_resolution;
+
+ if(s->pict_type==B_TYPE){
+ s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
+ }else{
+ s->last_time_base= s->time_base;
+ s->time_base= time_div;
+ s->pp_time= s->time - s->last_non_b_time;
+ s->last_non_b_time= s->time;
}
- put_bits(pbc, 8, 0);
}
static void mpeg4_encode_vol_header(MpegEncContext * s)
{
int vo_ver_id=1; //must be 2 if we want GMC or q-pel
+ char buf[255];
+
+ s->vo_type= s->has_b_frames ? CORE_VO_TYPE : SIMPLE_VO_TYPE;
- if(get_bit_count(&s->pb)!=0) mpeg4_stuffing(&s->pb);
put_bits(&s->pb, 16, 0);
put_bits(&s->pb, 16, 0x100); /* video obj */
put_bits(&s->pb, 16, 0);
put_bits(&s->pb, 16, 0x120); /* video obj layer */
put_bits(&s->pb, 1, 0); /* random access vol */
- put_bits(&s->pb, 8, 1); /* video obj type indication= simple obj */
+ put_bits(&s->pb, 8, s->vo_type); /* video obj type indication */
put_bits(&s->pb, 1, 1); /* is obj layer id= yes */
put_bits(&s->pb, 4, vo_ver_id); /* is obj layer ver id */
put_bits(&s->pb, 3, 1); /* is obj layer priority */
- put_bits(&s->pb, 4, 1); /* aspect ratio info= sqare pixel */ //FIXME real aspect
- put_bits(&s->pb, 1, 0); /* vol control parameters= no */
+ if(s->aspect_ratio_info)
+ put_bits(&s->pb, 4, s->aspect_ratio_info);/* aspect ratio info */
+ else
+ put_bits(&s->pb, 4, 1); /* aspect ratio info= sqare pixel */
+ if (s->aspect_ratio_info == FF_ASPECT_EXTENDED)
+ {
+ put_bits(&s->pb, 8, s->aspected_width);
+ put_bits(&s->pb, 8, s->aspected_height);
+ }
+
+ if(s->low_delay){
+ put_bits(&s->pb, 1, 1); /* vol control parameters= yes */
+ put_bits(&s->pb, 2, 1); /* chroma format YUV 420/YV12 */
+ put_bits(&s->pb, 1, s->low_delay);
+ put_bits(&s->pb, 1, 0); /* vbv parameters= no */
+ }else{
+ put_bits(&s->pb, 1, 0); /* vol control parameters= no */
+ }
+
put_bits(&s->pb, 2, RECT_SHAPE); /* vol shape= rectangle */
put_bits(&s->pb, 1, 1); /* marker bit */
- put_bits(&s->pb, 16, s->time_increment_resolution=30000);
- s->time_increment_bits = av_log2(s->time_increment_resolution - 1) + 1;
+
+ put_bits(&s->pb, 16, s->time_increment_resolution);
if (s->time_increment_bits < 1)
s->time_increment_bits = 1;
put_bits(&s->pb, 1, 1); /* marker bit */
put_bits(&s->pb, 1, 1); /* marker bit */
put_bits(&s->pb, 13, s->height); /* vol height */
put_bits(&s->pb, 1, 1); /* marker bit */
- put_bits(&s->pb, 1, 0); /* interlace */
+ put_bits(&s->pb, 1, s->progressive_sequence ? 0 : 1);
put_bits(&s->pb, 1, 1); /* obmc disable */
if (vo_ver_id == 1) {
put_bits(&s->pb, 1, s->vol_sprite_usage=0); /* sprite enable */
put_bits(&s->pb, 2, s->vol_sprite_usage=0); /* sprite enable */
}
put_bits(&s->pb, 1, 0); /* not 8 bit */
- put_bits(&s->pb, 1, 0); /* quant type= h263 style*/
+ put_bits(&s->pb, 1, s->mpeg_quant); /* quant type= (0=h263 style)*/
+ if(s->mpeg_quant) put_bits(&s->pb, 2, 0); /* no custom matrixes */
+
if (vo_ver_id != 1)
put_bits(&s->pb, 1, s->quarter_sample=0);
put_bits(&s->pb, 1, 1); /* complexity estimation disable */
- put_bits(&s->pb, 1, 1); /* resync marker disable */
- put_bits(&s->pb, 1, 0); /* data partitioned */
+ s->resync_marker= s->rtp_mode;
+ put_bits(&s->pb, 1, s->resync_marker ? 0 : 1);/* resync marker disable */
+ put_bits(&s->pb, 1, s->data_partitioning ? 1 : 0);
+ if(s->data_partitioning){
+ put_bits(&s->pb, 1, 0); /* no rvlc */
+ }
+
if (vo_ver_id != 1){
put_bits(&s->pb, 1, 0); /* newpred */
put_bits(&s->pb, 1, 0); /* reduced res vop */
}
put_bits(&s->pb, 1, 0); /* scalability */
-
- mpeg4_stuffing(&s->pb);
- put_bits(&s->pb, 16, 0);
- put_bits(&s->pb, 16, 0x1B2); /* user_data */
- put_string(&s->pb, "ffmpeg"); //FIXME append some version ...
-
- s->no_rounding = 0;
+
+ ff_mpeg4_stuffing(&s->pb);
+
+ /* user data */
+ if(!ff_bit_exact){
+ put_bits(&s->pb, 16, 0);
+ put_bits(&s->pb, 16, 0x1B2); /* user_data */
+ sprintf(buf, "FFmpeg%sb%s", FFMPEG_VERSION, LIBAVCODEC_BUILD_STR);
+ put_string(&s->pb, buf);
+ ff_mpeg4_stuffing(&s->pb);
+ }
}
/* write mpeg4 VOP header */
void mpeg4_encode_picture_header(MpegEncContext * s, int picture_number)
{
- if(s->pict_type==I_TYPE) mpeg4_encode_vol_header(s);
-
- if(get_bit_count(&s->pb)!=0) mpeg4_stuffing(&s->pb);
+ int time_incr;
+ int time_div, time_mod;
+
+ if(s->pict_type==I_TYPE){
+ s->no_rounding=0;
+ if(picture_number==0 || !s->strict_std_compliance)
+ mpeg4_encode_vol_header(s);
+ }
+
+//printf("num:%d rate:%d base:%d\n", s->picture_number, s->frame_rate, FRAME_RATE_BASE);
+
put_bits(&s->pb, 16, 0); /* vop header */
put_bits(&s->pb, 16, 0x1B6); /* vop header */
put_bits(&s->pb, 2, s->pict_type - 1); /* pict type: I = 0 , P = 1 */
- /* XXX: time base + 1 not always correct */
- put_bits(&s->pb, 1, 1);
+
+ time_div= s->time/s->time_increment_resolution;
+ time_mod= s->time%s->time_increment_resolution;
+ time_incr= time_div - s->last_time_base;
+ while(time_incr--)
+ put_bits(&s->pb, 1, 1);
+
put_bits(&s->pb, 1, 0);
put_bits(&s->pb, 1, 1); /* marker */
- put_bits(&s->pb, s->time_increment_bits, 1); /* XXX: correct time increment */
+ put_bits(&s->pb, s->time_increment_bits, time_mod); /* time increment */
put_bits(&s->pb, 1, 1); /* marker */
put_bits(&s->pb, 1, 1); /* vop coded */
if ( s->pict_type == P_TYPE
put_bits(&s->pb, 1, s->no_rounding); /* rounding type */
}
put_bits(&s->pb, 3, 0); /* intra dc VLC threshold */
+ if(!s->progressive_sequence){
+ put_bits(&s->pb, 1, s->top_field_first);
+ put_bits(&s->pb, 1, s->alternate_scan);
+ }
//FIXME sprite stuff
put_bits(&s->pb, 5, s->qscale);
if (s->pict_type == B_TYPE)
put_bits(&s->pb, 3, s->b_code); /* fcode_back */
// printf("****frame %d\n", picture_number);
+
+ s->y_dc_scale_table= ff_mpeg4_y_dc_scale_table; //FIXME add short header support
+ s->c_dc_scale_table= ff_mpeg4_c_dc_scale_table;
+ s->h_edge_pos= s->width;
+ s->v_edge_pos= s->height;
}
-void h263_dc_scale(MpegEncContext * s)
+static void change_qscale(MpegEncContext * s, int dquant)
{
-#if 1
- const static UINT8 y_tab[32]={
- // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
- 0, 8, 8, 8, 8,10,12,14,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,34,36,38,40,42,44,46
- };
- const static UINT8 c_tab[32]={
- // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
- 0, 8, 8, 8, 8, 9, 9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,19,20,21,22,23,24,25
- };
- s->y_dc_scale = y_tab[s->qscale];
- s->c_dc_scale = c_tab[s->qscale];
-#else
- int quant;
- quant = s->qscale;
- /* luminance */
- if (quant < 5)
- s->y_dc_scale = 8;
- else if (quant > 4 && quant < 9)
- s->y_dc_scale = (2 * quant);
- else if (quant > 8 && quant < 25)
- s->y_dc_scale = (quant + 8);
- else
- s->y_dc_scale = (2 * quant - 16);
- /* chrominance */
- if (quant < 5)
- s->c_dc_scale = 8;
- else if (quant > 4 && quant < 25)
- s->c_dc_scale = ((quant + 13) / 2);
- else
- s->c_dc_scale = (quant - 6);
-#endif
+ s->qscale += dquant;
+
+ if (s->qscale < 1)
+ s->qscale = 1;
+ else if (s->qscale > 31)
+ s->qscale = 31;
+
+ s->y_dc_scale= s->y_dc_scale_table[ s->qscale ];
+ s->c_dc_scale= s->c_dc_scale_table[ s->qscale ];
}
-static inline int mpeg4_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr, int *dir_ptr)
+inline int ff_mpeg4_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr, int *dir_ptr)
{
int a, b, c, wrap, pred, scale;
UINT16 *dc_val;
ac_val1 = ac_val;
if (s->ac_pred) {
if (dir == 0) {
+ const int xy= s->mb_x-1 + s->mb_y*s->mb_width;
/* left prediction */
ac_val -= 16;
- for(i=1;i<8;i++) {
- block[block_permute_op(i*8)] += ac_val[i];
+
+ if(s->mb_x==0 || s->qscale == s->qscale_table[xy] || n==1 || n==3){
+ /* same qscale */
+ for(i=1;i<8;i++) {
+ block[block_permute_op(i*8)] += ac_val[i];
+ }
+ }else{
+ /* different qscale, we must rescale */
+ for(i=1;i<8;i++) {
+ block[block_permute_op(i*8)] += ROUNDED_DIV(ac_val[i]*s->qscale_table[xy], s->qscale);
+ }
}
} else {
+ const int xy= s->mb_x + s->mb_y*s->mb_width - s->mb_width;
/* top prediction */
ac_val -= 16 * s->block_wrap[n];
- for(i=1;i<8;i++) {
- block[block_permute_op(i)] += ac_val[i + 8];
+
+ if(s->mb_y==0 || s->qscale == s->qscale_table[xy] || n==2 || n==3){
+ /* same qscale */
+ for(i=1;i<8;i++) {
+ block[block_permute_op(i)] += ac_val[i + 8];
+ }
+ }else{
+ /* different qscale, we must rescale */
+ for(i=1;i<8;i++) {
+ block[block_permute_op(i)] += ROUNDED_DIV(ac_val[i + 8]*s->qscale_table[xy], s->qscale);
+ }
}
}
}
/* left copy */
for(i=1;i<8;i++)
ac_val1[i] = block[block_permute_op(i * 8)];
+
/* top copy */
for(i=1;i<8;i++)
ac_val1[8 + i] = block[block_permute_op(i)];
+
}
static void mpeg4_inv_pred_ac(MpegEncContext * s, INT16 *block, int n,
ac_val = s->ac_val[0][0] + s->block_index[n] * 16;
if (dir == 0) {
+ const int xy= s->mb_x-1 + s->mb_y*s->mb_width;
/* left prediction */
ac_val -= 16;
- for(i=1;i<8;i++) {
- block[block_permute_op(i*8)] -= ac_val[i];
+ if(s->mb_x==0 || s->qscale == s->qscale_table[xy] || n==1 || n==3){
+ /* same qscale */
+ for(i=1;i<8;i++) {
+ block[block_permute_op(i*8)] -= ac_val[i];
+ }
+ }else{
+ /* different qscale, we must rescale */
+ for(i=1;i<8;i++) {
+ block[block_permute_op(i*8)] -= ROUNDED_DIV(ac_val[i]*s->qscale_table[xy], s->qscale);
+ }
}
} else {
+ const int xy= s->mb_x + s->mb_y*s->mb_width - s->mb_width;
/* top prediction */
ac_val -= 16 * s->block_wrap[n];
- for(i=1;i<8;i++) {
- block[block_permute_op(i)] -= ac_val[i + 8];
+ if(s->mb_y==0 || s->qscale == s->qscale_table[xy] || n==2 || n==3){
+ /* same qscale */
+ for(i=1;i<8;i++) {
+ block[block_permute_op(i)] -= ac_val[i + 8];
+ }
+ }else{
+ /* different qscale, we must rescale */
+ for(i=1;i<8;i++) {
+ block[block_permute_op(i)] -= ROUNDED_DIV(ac_val[i + 8]*s->qscale_table[xy], s->qscale);
+ }
}
}
}
-
-static inline void mpeg4_encode_dc(MpegEncContext * s, int level, int n)
+static inline void mpeg4_encode_dc(PutBitContext * s, int level, int n)
{
+#if 1
+// if(level<-255 || level>255) printf("dc overflow\n");
+ level+=256;
+ if (n < 4) {
+ /* luminance */
+ put_bits(s, uni_DCtab_lum[level][1], uni_DCtab_lum[level][0]);
+ } else {
+ /* chrominance */
+ put_bits(s, uni_DCtab_chrom[level][1], uni_DCtab_chrom[level][0]);
+ }
+#else
int size, v;
/* find number of bits */
size = 0;
if (size > 8)
put_bits(&s->pb, 1, 1);
}
+#endif
}
-static void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n, int intra_dc, UINT8 *scan_table)
+static inline void mpeg4_encode_block(MpegEncContext * s, DCTELEM * block, int n, int intra_dc,
+ UINT8 *scan_table, PutBitContext *dc_pb, PutBitContext *ac_pb)
{
- int level, run, last, i, j, last_index, last_non_zero, sign, slevel;
+ int last, i, last_non_zero, sign;
int code;
const RLTable *rl;
+ UINT32 *bits_tab;
+ UINT8 *len_tab;
+ const int last_index = s->block_last_index[n];
- if (s->mb_intra) {
+ if (s->mb_intra) { //Note gcc (3.2.1 at least) will optimize this away
/* mpeg4 based DC predictor */
- mpeg4_encode_dc(s, intra_dc, n);
+ mpeg4_encode_dc(dc_pb, intra_dc, n);
+ if(last_index<1) return;
i = 1;
rl = &rl_intra;
+ bits_tab= uni_mpeg4_intra_rl_bits;
+ len_tab = uni_mpeg4_intra_rl_len;
} else {
+ if(last_index<0) return;
i = 0;
rl = &rl_inter;
+ bits_tab= uni_mpeg4_inter_rl_bits;
+ len_tab = uni_mpeg4_inter_rl_len;
}
/* AC coefs */
- last_index = s->block_last_index[n];
last_non_zero = i - 1;
- for (; i <= last_index; i++) {
- j = scan_table[i];
- level = block[j];
+#if 1
+ for (; i < last_index; i++) {
+ int level = block[ scan_table[i] ];
if (level) {
- run = i - last_non_zero - 1;
+ int run = i - last_non_zero - 1;
+ level+=64;
+ if((level&(~127)) == 0){
+ const int index= UNI_MPEG4_ENC_INDEX(0, run, level);
+ put_bits(ac_pb, len_tab[index], bits_tab[index]);
+ }else{ //ESC3
+ put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(0<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1);
+ }
+ last_non_zero = i;
+ }
+ }
+ /*if(i<=last_index)*/{
+ int level = block[ scan_table[i] ];
+ int run = i - last_non_zero - 1;
+ level+=64;
+ if((level&(~127)) == 0){
+ const int index= UNI_MPEG4_ENC_INDEX(1, run, level);
+ put_bits(ac_pb, len_tab[index], bits_tab[index]);
+ }else{ //ESC3
+ put_bits(ac_pb, 7+2+1+6+1+12+1, (3<<23)+(3<<21)+(1<<20)+(run<<14)+(1<<13)+(((level-64)&0xfff)<<1)+1);
+ }
+ }
+#else
+ for (; i <= last_index; i++) {
+ const int slevel = block[ scan_table[i] ];
+ if (slevel) {
+ int level;
+ int run = i - last_non_zero - 1;
last = (i == last_index);
sign = 0;
- slevel = level;
+ level = slevel;
if (level < 0) {
sign = 1;
level = -level;
}
code = get_rl_index(rl, last, run, level);
- put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
+ put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
if (code == rl->n) {
int level1, run1;
level1 = level - rl->max_level[last][run];
code = get_rl_index(rl, last, run, level1);
if (code == rl->n) {
esc2:
- put_bits(&s->pb, 1, 1);
+ put_bits(ac_pb, 1, 1);
if (level > MAX_LEVEL)
goto esc3;
run1 = run - rl->max_run[last][level] - 1;
if (code == rl->n) {
esc3:
/* third escape */
- put_bits(&s->pb, 1, 1);
- put_bits(&s->pb, 1, last);
- put_bits(&s->pb, 6, run);
- put_bits(&s->pb, 1, 1);
- put_bits(&s->pb, 12, slevel & 0xfff);
- put_bits(&s->pb, 1, 1);
+ put_bits(ac_pb, 1, 1);
+ put_bits(ac_pb, 1, last);
+ put_bits(ac_pb, 6, run);
+ put_bits(ac_pb, 1, 1);
+ put_bits(ac_pb, 12, slevel & 0xfff);
+ put_bits(ac_pb, 1, 1);
} else {
/* second escape */
- put_bits(&s->pb, 1, 0);
- put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
- put_bits(&s->pb, 1, sign);
+ put_bits(ac_pb, 1, 0);
+ put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
+ put_bits(ac_pb, 1, sign);
}
} else {
/* first escape */
- put_bits(&s->pb, 1, 0);
- put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
- put_bits(&s->pb, 1, sign);
+ put_bits(ac_pb, 1, 0);
+ put_bits(ac_pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
+ put_bits(ac_pb, 1, sign);
}
} else {
- put_bits(&s->pb, 1, sign);
+ put_bits(ac_pb, 1, sign);
}
last_non_zero = i;
}
}
+#endif
}
if (run > max_run[level])
max_run[level] = run;
}
- rl->max_level[last] = malloc(MAX_RUN + 1);
+ rl->max_level[last] = av_malloc(MAX_RUN + 1);
memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
- rl->max_run[last] = malloc(MAX_LEVEL + 1);
+ rl->max_run[last] = av_malloc(MAX_LEVEL + 1);
memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
- rl->index_run[last] = malloc(MAX_RUN + 1);
+ rl->index_run[last] = av_malloc(MAX_RUN + 1);
memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
}
}
void init_vlc_rl(RLTable *rl)
{
+ int i, q;
+
init_vlc(&rl->vlc, 9, rl->n + 1,
&rl->table_vlc[0][1], 4, 2,
&rl->table_vlc[0][0], 4, 2);
+
+
+ for(q=0; q<32; q++){
+ int qmul= q*2;
+ int qadd= (q-1)|1;
+
+ if(q==0){
+ qmul=1;
+ qadd=0;
+ }
+
+ rl->rl_vlc[q]= av_malloc(rl->vlc.table_size*sizeof(RL_VLC_ELEM));
+ for(i=0; i<rl->vlc.table_size; i++){
+ int code= rl->vlc.table[i][0];
+ int len = rl->vlc.table[i][1];
+ int level, run;
+
+ if(len==0){ // illegal code
+ run= 66;
+ level= MAX_LEVEL;
+ }else if(len<0){ //more bits needed
+ run= 0;
+ level= code;
+ }else{
+ if(code==rl->n){ //esc
+ run= 66;
+ level= 0;
+ }else{
+ run= rl->table_run [code] + 1;
+ level= rl->table_level[code] * qmul + qadd;
+ if(code >= rl->last) run+=192;
+ }
+ }
+ rl->rl_vlc[q][i].len= len;
+ rl->rl_vlc[q][i].level= level;
+ rl->rl_vlc[q][i].run= run;
+ }
+ }
}
/* init vlcs */
if (!done) {
done = 1;
- init_vlc(&intra_MCBPC_vlc, 6, 8,
+ init_vlc(&intra_MCBPC_vlc, INTRA_MCBPC_VLC_BITS, 8,
intra_MCBPC_bits, 1, 1,
intra_MCBPC_code, 1, 1);
- init_vlc(&inter_MCBPC_vlc, 9, 25,
+ init_vlc(&inter_MCBPC_vlc, INTER_MCBPC_VLC_BITS, 25,
inter_MCBPC_bits, 1, 1,
inter_MCBPC_code, 1, 1);
- init_vlc(&cbpy_vlc, 6, 16,
+ init_vlc(&cbpy_vlc, CBPY_VLC_BITS, 16,
&cbpy_tab[0][1], 2, 1,
&cbpy_tab[0][0], 2, 1);
- init_vlc(&mv_vlc, 9, 33,
+ init_vlc(&mv_vlc, MV_VLC_BITS, 33,
&mvtab[0][1], 2, 1,
&mvtab[0][0], 2, 1);
init_rl(&rl_inter);
init_vlc_rl(&rl_inter);
init_vlc_rl(&rl_intra);
init_vlc_rl(&rl_intra_aic);
- init_vlc(&dc_lum, 9, 13,
+ init_vlc(&dc_lum, DC_VLC_BITS, 10 /* 13 */,
&DCtab_lum[0][1], 2, 1,
&DCtab_lum[0][0], 2, 1);
- init_vlc(&dc_chrom, 9, 13,
+ init_vlc(&dc_chrom, DC_VLC_BITS, 10 /* 13 */,
&DCtab_chrom[0][1], 2, 1,
&DCtab_chrom[0][0], 2, 1);
- init_vlc(&sprite_trajectory, 9, 15,
+ init_vlc(&sprite_trajectory, SPRITE_TRAJ_VLC_BITS, 15,
&sprite_trajectory_tab[0][1], 4, 2,
&sprite_trajectory_tab[0][0], 4, 2);
- init_vlc(&mb_type_b_vlc, 4, 4,
+ init_vlc(&mb_type_b_vlc, MB_TYPE_B_VLC_BITS, 4,
&mb_type_b_tab[0][1], 2, 1,
&mb_type_b_tab[0][0], 2, 1);
}
+
+ s->progressive_sequence=1; // set to most likely for the case of incomplete headers
}
int h263_decode_gob_header(MpegEncContext *s)
}
+static inline void memsetw(short *tab, int val, int n)
+{
+ int i;
+ for(i=0;i<n;i++)
+ tab[i] = val;
+}
+
+void ff_mpeg4_init_partitions(MpegEncContext *s)
+{
+ init_put_bits(&s->tex_pb, s->tex_pb_buffer, PB_BUFFER_SIZE, NULL, NULL);
+ init_put_bits(&s->pb2 , s->pb2_buffer , PB_BUFFER_SIZE, NULL, NULL);
+}
+
+void ff_mpeg4_merge_partitions(MpegEncContext *s)
+{
+ const int pb2_len = get_bit_count(&s->pb2 );
+ const int tex_pb_len= get_bit_count(&s->tex_pb);
+ const int bits= get_bit_count(&s->pb);
+
+ if(s->pict_type==I_TYPE){
+ put_bits(&s->pb, 19, DC_MARKER);
+ s->misc_bits+=19 + pb2_len + bits - s->last_bits;
+ s->i_tex_bits+= tex_pb_len;
+ }else{
+ put_bits(&s->pb, 17, MOTION_MARKER);
+ s->misc_bits+=17 + pb2_len;;
+ s->mv_bits+= bits - s->last_bits;
+ s->p_tex_bits+= tex_pb_len;
+ }
+
+ flush_put_bits(&s->pb2);
+ flush_put_bits(&s->tex_pb);
+
+ ff_copy_bits(&s->pb, s->pb2_buffer , pb2_len);
+ ff_copy_bits(&s->pb, s->tex_pb_buffer, tex_pb_len);
+ s->last_bits= get_bit_count(&s->pb);
+}
+
+void ff_mpeg4_encode_video_packet_header(MpegEncContext *s)
+{
+ int mb_num_bits= av_log2(s->mb_num - 1) + 1;
+
+ ff_mpeg4_stuffing(&s->pb);
+ if(s->pict_type==I_TYPE)
+ put_bits(&s->pb, 16, 0);
+ else if(s->pict_type==B_TYPE)
+ put_bits(&s->pb, MAX(MAX(s->f_code, s->b_code)+15, 17), 0);
+ else /* S/P_TYPE */
+ put_bits(&s->pb, s->f_code+15, 0);
+ put_bits(&s->pb, 1, 1);
+
+ put_bits(&s->pb, mb_num_bits, s->mb_x + s->mb_y*s->mb_width);
+ put_bits(&s->pb, 5, s->qscale);
+ put_bits(&s->pb, 1, 0); /* no HEC */
+}
+
+/**
+ * decodes the next video packet and sets s->next_qscale
+ * returns mb_num of the next packet or <0 if something went wrong
+ */
+static int decode_video_packet_header(MpegEncContext *s, GetBitContext *gb)
+{
+ int bits;
+ int mb_num_bits= av_log2(s->mb_num - 1) + 1;
+ int header_extension=0, mb_num;
+//printf("%X\n", show_bits(&gb, 24));
+//printf("parse_video_packet_header\n");
+// if(show_aligned_bits(gb, 1, 16) != 0) return -1;
+
+ /* is there enough space left for a video packet + header */
+ if( get_bits_count(gb) > gb->size*8-20) return -1;
+
+//printf("resync at %d %d\n", s->mb_x, s->mb_y);
+// skip_bits(gb, 1);
+// align_get_bits(gb);
+ if(get_bits(gb, 16)!=0){
+ printf("internal error while decoding video packet header\n");
+ }
+
+//printf("%X\n", show_bits(gb, 24));
+ bits=0;
+ while(!get_bits1(gb) && bits<30) bits++;
+ if((s->pict_type == P_TYPE || s->pict_type == S_TYPE) && bits != s->f_code-1){
+ printf("marker does not match f_code (is: %d should be: %d pos: %d end %d x: %d y: %d)\n",
+ bits+1, s->f_code, get_bits_count(gb), gb->size*8, s->mb_x, s->mb_y);
+ return -1;
+ }else if(s->pict_type == I_TYPE && bits != 0){
+ printf("marker too long\n");
+ return -1;
+ }else if(s->pict_type == B_TYPE && bits != MAX(MAX(s->f_code, s->b_code)-1, 1)){
+ printf("marker does not match f/b_code\n");
+ return -1;
+ }
+//printf("%X\n", show_bits(gb, 24));
+
+ if(s->shape != RECT_SHAPE){
+ header_extension= get_bits1(gb);
+ //FIXME more stuff here
+ }
+
+ mb_num= get_bits(gb, mb_num_bits);
+ if(mb_num < s->mb_x + s->mb_y*s->mb_width || mb_num>=s->mb_num){
+ fprintf(stderr, "illegal mb_num in video packet (%d %d) \n", mb_num, s->mb_x + s->mb_y*s->mb_width);
+ return -1;
+ }
+
+ if(s->shape != BIN_ONLY_SHAPE){
+ s->next_resync_qscale= get_bits(gb, 5);
+ if(s->next_resync_qscale==0)
+ s->next_resync_qscale= s->qscale;
+ if(s->next_resync_qscale==0){
+ fprintf(stderr, "qscale==0\n");
+ return -1;
+ }
+ }
+
+ if(s->shape == RECT_SHAPE){
+ header_extension= get_bits1(gb);
+ }
+ if(header_extension){
+ int time_increment;
+ int time_incr=0;
+
+ while (get_bits1(gb) != 0)
+ time_incr++;
+
+ check_marker(gb, "before time_increment in video packed header");
+ time_increment= get_bits(gb, s->time_increment_bits);
+ check_marker(gb, "before vop_coding_type in video packed header");
+
+ skip_bits(gb, 2); /* vop coding type */
+ //FIXME not rect stuff here
+
+ if(s->shape != BIN_ONLY_SHAPE){
+ skip_bits(gb, 3); /* intra dc vlc threshold */
+
+ if(s->pict_type == S_TYPE && s->vol_sprite_usage==GMC_SPRITE && s->num_sprite_warping_points){
+ mpeg4_decode_sprite_trajectory(s);
+ fprintf(stderr, "untested\n");
+ }
+
+ //FIXME reduced res stuff here
+
+ if (s->pict_type != I_TYPE) {
+ int f_code = get_bits(gb, 3); /* fcode_for */
+ if(f_code==0){
+ printf("Error, video packet header damaged (f_code=0)\n");
+ }
+ }
+ if (s->pict_type == B_TYPE) {
+ int b_code = get_bits(gb, 3);
+ if(b_code==0){
+ printf("Error, video packet header damaged (b_code=0)\n");
+ }
+ }
+ }
+ }
+ //FIXME new-pred stuff
+
+//printf("parse ok %d %d %d %d\n", mb_num, s->mb_x + s->mb_y*s->mb_width, get_bits_count(gb), get_bits_count(&s->gb));
+
+ return mb_num;
+}
+
+void ff_mpeg4_clean_buffers(MpegEncContext *s)
+{
+ int c_wrap, c_xy, l_wrap, l_xy;
+
+ l_wrap= s->block_wrap[0];
+ l_xy= s->mb_y*l_wrap*2 + s->mb_x*2;
+ c_wrap= s->block_wrap[4];
+ c_xy= s->mb_y*c_wrap + s->mb_x;
+
+ /* clean DC */
+ memsetw(s->dc_val[0] + l_xy, 1024, l_wrap*2+1);
+ memsetw(s->dc_val[1] + c_xy, 1024, c_wrap+1);
+ memsetw(s->dc_val[2] + c_xy, 1024, c_wrap+1);
+
+ /* clean AC */
+ memset(s->ac_val[0] + l_xy, 0, (l_wrap*2+1)*16*sizeof(INT16));
+ memset(s->ac_val[1] + c_xy, 0, (c_wrap +1)*16*sizeof(INT16));
+ memset(s->ac_val[2] + c_xy, 0, (c_wrap +1)*16*sizeof(INT16));
+
+ /* clean MV */
+ // we cant clear the MVs as they might be needed by a b frame
+// memset(s->motion_val + l_xy, 0, (l_wrap*2+1)*2*sizeof(INT16));
+// memset(s->motion_val, 0, 2*sizeof(INT16)*(2 + s->mb_width*2)*(2 + s->mb_height*2));
+ s->last_mv[0][0][0]=
+ s->last_mv[0][0][1]=
+ s->last_mv[1][0][0]=
+ s->last_mv[1][0][1]= 0;
+}
+
+/* searches for the next resync marker clears ac,dc,mc, and sets s->next_resync_gb, s->mb_num_left */
+int ff_mpeg4_resync(MpegEncContext *s)
+{
+ GetBitContext gb;
+
+ /* search & parse next resync marker */
+
+ gb= s->next_resync_gb;
+ align_get_bits(&gb);
+//printf("mpeg4_resync %d next:%d \n", get_bits_count(&gb), get_bits_count(&s->next_resync_gb));
+ for(;;) {
+ int v= show_bits(&gb, 24);
+ if( get_bits_count(&gb) >= gb.size*8-24 || v == 1 /* start-code */){
+ s->mb_num_left= s->mb_num - s->mb_x - s->mb_y*s->mb_width;
+//printf("mpeg4_resync end\n");
+ s->gb= s->next_resync_gb; //continue at the next resync marker
+ return -1;
+ }else if(v>>8 == 0){
+ int next;
+ s->next_resync_pos= get_bits_count(&gb);
+
+ next= decode_video_packet_header(s, &gb);
+ if(next >= 0){
+ s->mb_num_left= next - s->mb_x - s->mb_y*s->mb_width;
+ break;
+ }
+
+ align_get_bits(&gb);
+ }
+ skip_bits(&gb, 8);
+ }
+ s->next_resync_gb=gb;
+
+ return 0;
+}
+
+static inline void init_block_index(MpegEncContext *s)
+{
+ s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1 + s->mb_x*2;
+ s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1) + s->mb_x*2;
+ s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1 + s->mb_x*2;
+ s->block_index[3]= s->block_wrap[0]*(s->mb_y*2 + 2) + s->mb_x*2;
+ s->block_index[4]= s->block_wrap[4]*(s->mb_y + 1) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
+ s->block_index[5]= s->block_wrap[4]*(s->mb_y + 1 + s->mb_height + 2) + s->block_wrap[0]*(s->mb_height*2 + 2) + s->mb_x;
+}
+
+static inline void update_block_index(MpegEncContext *s)
+{
+ s->block_index[0]+=2;
+ s->block_index[1]+=2;
+ s->block_index[2]+=2;
+ s->block_index[3]+=2;
+ s->block_index[4]++;
+ s->block_index[5]++;
+}
+
+/**
+ * decodes the first & second partition
+ * returns error type or 0 if no error
+ */
+int ff_mpeg4_decode_partitions(MpegEncContext *s)
+{
+ static const INT8 quant_tab[4] = { -1, -2, 1, 2 };
+ int mb_num;
+
+ /* decode first partition */
+ mb_num=0;
+ s->first_slice_line=1;
+ s->mb_x= s->resync_mb_x;
+ for(s->mb_y= s->resync_mb_y; mb_num < s->mb_num_left; s->mb_y++){
+ init_block_index(s);
+ for(; mb_num < s->mb_num_left && s->mb_x<s->mb_width; s->mb_x++){
+ const int xy= s->mb_x + s->mb_y*s->mb_width;
+ int cbpc;
+ int dir=0;
+
+ mb_num++;
+ update_block_index(s);
+ if(s->mb_x == s->resync_mb_x && s->mb_y == s->resync_mb_y+1)
+ s->first_slice_line=0;
+
+ if(s->mb_x==0) PRINT_MB_TYPE("\n");
+
+ if(s->pict_type==I_TYPE){
+ int i;
+
+ PRINT_MB_TYPE("I");
+ cbpc = get_vlc2(&s->gb, intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 1);
+ if (cbpc < 0){
+ fprintf(stderr, "cbpc corrupted at %d %d\n", s->mb_x, s->mb_y);
+ return DECODING_DESYNC;
+ }
+ s->cbp_table[xy]= cbpc & 3;
+ s->mb_type[xy]= MB_TYPE_INTRA;
+ s->mb_intra = 1;
+
+ if(cbpc & 4) {
+ change_qscale(s, quant_tab[get_bits(&s->gb, 2)]);
+ }
+ s->qscale_table[xy]= s->qscale;
+
+ s->mbintra_table[xy]= 1;
+ for(i=0; i<6; i++){
+ int dc_pred_dir;
+ int dc= mpeg4_decode_dc(s, i, &dc_pred_dir);
+ if(dc < 0){
+ fprintf(stderr, "DC corrupted at %d %d\n", s->mb_x, s->mb_y);
+ return DECODING_DESYNC;
+ }
+ dir<<=1;
+ if(dc_pred_dir) dir|=1;
+ }
+ s->pred_dir_table[xy]= dir;
+ }else{ /* P/S_TYPE */
+ int mx, my, pred_x, pred_y;
+ INT16 * const mot_val= s->motion_val[s->block_index[0]];
+ const int stride= s->block_wrap[0]*2;
+
+ if(get_bits1(&s->gb)){
+ /* skip mb */
+ s->mb_type[xy]= MB_TYPE_SKIPED;
+ if(s->pict_type==S_TYPE && s->vol_sprite_usage==GMC_SPRITE){
+ const int a= s->sprite_warping_accuracy;
+ PRINT_MB_TYPE("G");
+ if(s->divx_version==500 && s->divx_build==413){
+ mx = s->sprite_offset[0][0] / (1<<(a-s->quarter_sample));
+ my = s->sprite_offset[0][1] / (1<<(a-s->quarter_sample));
+ }else{
+ mx = RSHIFT(s->sprite_offset[0][0], a-s->quarter_sample);
+ my = RSHIFT(s->sprite_offset[0][1], a-s->quarter_sample);
+ s->mb_type[xy]= MB_TYPE_GMC | MB_TYPE_SKIPED;
+ }
+ }else{
+ PRINT_MB_TYPE("S");
+ mx = 0;
+ my = 0;
+ }
+ mot_val[0 ]= mot_val[2 ]=
+ mot_val[0+stride]= mot_val[2+stride]= mx;
+ mot_val[1 ]= mot_val[3 ]=
+ mot_val[1+stride]= mot_val[3+stride]= my;
+
+ if(s->mbintra_table[xy])
+ ff_clean_intra_table_entries(s);
+
+ continue;
+ }
+ cbpc = get_vlc2(&s->gb, inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2);
+ if (cbpc < 0){
+ fprintf(stderr, "cbpc corrupted at %d %d\n", s->mb_x, s->mb_y);
+ return DECODING_DESYNC;
+ }
+ if (cbpc > 20)
+ cbpc+=3;
+ else if (cbpc == 20)
+ fprintf(stderr, "Stuffing !");
+ s->cbp_table[xy]= cbpc&(8+3); //8 is dquant
+
+ s->mb_intra = ((cbpc & 4) != 0);
+
+ if(s->mb_intra){
+ PRINT_MB_TYPE("I");
+ s->mbintra_table[xy]= 1;
+ s->mb_type[xy]= MB_TYPE_INTRA;
+ mot_val[0 ]= mot_val[2 ]=
+ mot_val[0+stride]= mot_val[2+stride]= 0;
+ mot_val[1 ]= mot_val[3 ]=
+ mot_val[1+stride]= mot_val[3+stride]= 0;
+ }else{
+ if(s->mbintra_table[xy])
+ ff_clean_intra_table_entries(s);
+
+ if(s->pict_type==S_TYPE && s->vol_sprite_usage==GMC_SPRITE && (cbpc & 16) == 0)
+ s->mcsel= get_bits1(&s->gb);
+ else s->mcsel= 0;
+
+ if ((cbpc & 16) == 0) {
+ PRINT_MB_TYPE("P");
+ /* 16x16 motion prediction */
+ s->mb_type[xy]= MB_TYPE_INTER;
+
+ h263_pred_motion(s, 0, &pred_x, &pred_y);
+ if(!s->mcsel)
+ mx = h263_decode_motion(s, pred_x, s->f_code);
+ else {
+ const int a= s->sprite_warping_accuracy;
+ if(s->divx_version==500 && s->divx_build==413){
+ mx = s->sprite_offset[0][0] / (1<<(a-s->quarter_sample));
+ }else{
+ mx = RSHIFT(s->sprite_offset[0][0], a-s->quarter_sample);
+ }
+ }
+ if (mx >= 0xffff)
+ return DECODING_DESYNC;
+
+ if(!s->mcsel)
+ my = h263_decode_motion(s, pred_y, s->f_code);
+ else{
+ const int a= s->sprite_warping_accuracy;
+ if(s->divx_version==500 && s->divx_build==413){
+ my = s->sprite_offset[0][1] / (1<<(a-s->quarter_sample));
+ }else{
+ my = RSHIFT(s->sprite_offset[0][1], a-s->quarter_sample);
+ }
+ }
+ if (my >= 0xffff)
+ return DECODING_DESYNC;
+ mot_val[0 ]= mot_val[2 ] =
+ mot_val[0+stride]= mot_val[2+stride]= mx;
+ mot_val[1 ]= mot_val[3 ]=
+ mot_val[1+stride]= mot_val[3+stride]= my;
+ } else {
+ int i;
+ PRINT_MB_TYPE("4");
+ s->mb_type[xy]= MB_TYPE_INTER4V;
+ for(i=0;i<4;i++) {
+ INT16 *mot_val= h263_pred_motion(s, i, &pred_x, &pred_y);
+ mx = h263_decode_motion(s, pred_x, s->f_code);
+ if (mx >= 0xffff)
+ return DECODING_DESYNC;
+
+ my = h263_decode_motion(s, pred_y, s->f_code);
+ if (my >= 0xffff)
+ return DECODING_DESYNC;
+ mot_val[0] = mx;
+ mot_val[1] = my;
+ }
+ }
+ }
+ }
+ }
+ s->mb_x= 0;
+ }
+
+ if (s->pict_type==I_TYPE && get_bits(&s->gb, 19)!=DC_MARKER ) s->decoding_error= DECODING_DESYNC;
+ else if(s->pict_type!=I_TYPE && get_bits(&s->gb, 17)!=MOTION_MARKER) s->decoding_error= DECODING_DESYNC;
+ if(s->decoding_error== DECODING_DESYNC){
+ fprintf(stderr, "marker missing after first partition at %d %d\n", s->mb_x, s->mb_y);
+ return DECODING_DESYNC;
+ }
+
+ /* decode second partition */
+ mb_num=0;
+ s->mb_x= s->resync_mb_x;
+ for(s->mb_y= s->resync_mb_y; mb_num < s->mb_num_left; s->mb_y++){
+ init_block_index(s);
+ for(; mb_num < s->mb_num_left && s->mb_x<s->mb_width; s->mb_x++){
+ const int xy= s->mb_x + s->mb_y*s->mb_width;
+
+ mb_num++;
+ update_block_index(s);
+
+ if(s->pict_type==I_TYPE){
+ int ac_pred= get_bits1(&s->gb);
+ int cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1);
+ if(cbpy<0){
+ fprintf(stderr, "cbpy corrupted at %d %d\n", s->mb_x, s->mb_y);
+ return DECODING_AC_LOST;
+ }
+
+ s->cbp_table[xy]|= cbpy<<2;
+ s->pred_dir_table[xy]|= ac_pred<<7;
+ }else{ /* P || S_TYPE */
+ if(s->mb_type[xy]&MB_TYPE_INTRA){
+ int dir=0,i;
+ int ac_pred = get_bits1(&s->gb);
+ int cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1);
+
+ if(cbpy<0){
+ fprintf(stderr, "I cbpy corrupted at %d %d\n", s->mb_x, s->mb_y);
+ return DECODING_ACDC_LOST;
+ }
+
+ if(s->cbp_table[xy] & 8) {
+ change_qscale(s, quant_tab[get_bits(&s->gb, 2)]);
+ }
+ s->qscale_table[xy]= s->qscale;
+
+ for(i=0; i<6; i++){
+ int dc_pred_dir;
+ int dc= mpeg4_decode_dc(s, i, &dc_pred_dir);
+ if(dc < 0){
+ fprintf(stderr, "DC corrupted at %d %d\n", s->mb_x, s->mb_y);
+ return DECODING_ACDC_LOST;
+ }
+ dir<<=1;
+ if(dc_pred_dir) dir|=1;
+ }
+ s->cbp_table[xy]&= 3; //remove dquant
+ s->cbp_table[xy]|= cbpy<<2;
+ s->pred_dir_table[xy]= dir | (ac_pred<<7);
+ }else if(s->mb_type[xy]&MB_TYPE_SKIPED){
+ s->qscale_table[xy]= s->qscale;
+ s->cbp_table[xy]= 0;
+ }else{
+ int cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1);
+
+ if(cbpy<0){
+ fprintf(stderr, "P cbpy corrupted at %d %d\n", s->mb_x, s->mb_y);
+ return DECODING_ACDC_LOST;
+ }
+
+ if(s->cbp_table[xy] & 8) {
+ change_qscale(s, quant_tab[get_bits(&s->gb, 2)]);
+ }
+ s->qscale_table[xy]= s->qscale;
+
+ s->cbp_table[xy]&= 3; //remove dquant
+ s->cbp_table[xy]|= (cbpy^0xf)<<2;
+ }
+ }
+ }
+ s->mb_x= 0;
+ }
+
+
+ return 0;
+}
+
+static int mpeg4_decode_partitioned_mb(MpegEncContext *s,
+ DCTELEM block[6][64])
+{
+ int cbp, mb_type;
+ const int xy= s->mb_x + s->mb_y*s->mb_width;
+
+ if(s->mb_x==s->resync_mb_x && s->mb_y==s->resync_mb_y){ //Note resync_mb_{x,y}==0 at the start
+ int i;
+ int block_index_backup[6];
+ int qscale= s->qscale;
+
+ for(i=0; i<6; i++) block_index_backup[i]= s->block_index[i];
+
+ s->decoding_error= ff_mpeg4_decode_partitions(s);
+
+ for(i=0; i<6; i++) s->block_index[i]= block_index_backup[i];
+ s->first_slice_line=1;
+ s->mb_x= s->resync_mb_x;
+ s->mb_y= s->resync_mb_y;
+ s->qscale= qscale;
+ s->y_dc_scale= s->y_dc_scale_table[ s->qscale ];
+ s->c_dc_scale= s->c_dc_scale_table[ s->qscale ];
+
+ if(s->decoding_error==DECODING_DESYNC) return -1;
+ }
+
+ mb_type= s->mb_type[xy];
+ if(s->decoding_error)
+ cbp=0;
+ else
+ cbp = s->cbp_table[xy];
+
+ if(s->decoding_error!=DECODING_ACDC_LOST && s->qscale_table[xy] != s->qscale){
+ s->qscale= s->qscale_table[xy];
+ s->y_dc_scale= s->y_dc_scale_table[ s->qscale ];
+ s->c_dc_scale= s->c_dc_scale_table[ s->qscale ];
+ }
+
+ if (s->pict_type == P_TYPE || s->pict_type==S_TYPE) {
+ int i;
+ for(i=0; i<4; i++){
+ s->mv[0][i][0] = s->motion_val[ s->block_index[i] ][0];
+ s->mv[0][i][1] = s->motion_val[ s->block_index[i] ][1];
+ }
+ s->mb_intra = mb_type&MB_TYPE_INTRA;
+
+ if (mb_type&MB_TYPE_SKIPED) {
+ /* skip mb */
+ for(i=0;i<6;i++)
+ s->block_last_index[i] = -1;
+ s->mv_dir = MV_DIR_FORWARD;
+ s->mv_type = MV_TYPE_16X16;
+ if(s->pict_type==S_TYPE && s->vol_sprite_usage==GMC_SPRITE){
+ s->mcsel=1;
+ s->mb_skiped = 0;
+ }else{
+ s->mcsel=0;
+ s->mb_skiped = 1;
+ }
+ return 0;
+ }else if(s->mb_intra && s->decoding_error!=DECODING_ACDC_LOST){
+ s->ac_pred = s->pred_dir_table[xy]>>7;
+
+ /* decode each block */
+ for (i = 0; i < 6; i++) {
+ int ret= mpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, 1);
+ if(ret==DECODING_AC_LOST){
+ fprintf(stderr, "texture corrupted at %d %d (trying to continue with mc/dc only)\n", s->mb_x, s->mb_y);
+ s->decoding_error=DECODING_AC_LOST;
+ cbp=0;
+ }else if(ret==DECODING_ACDC_LOST){
+ fprintf(stderr, "dc corrupted at %d %d (trying to continue with mc only)\n", s->mb_x, s->mb_y);
+ s->decoding_error=DECODING_ACDC_LOST;
+ break;
+ }
+ }
+ }else if(!s->mb_intra){
+// s->mcsel= 0; //FIXME do we need to init that
+
+ s->mv_dir = MV_DIR_FORWARD;
+ if (mb_type&MB_TYPE_INTER4V) {
+ s->mv_type = MV_TYPE_8X8;
+ } else {
+ s->mv_type = MV_TYPE_16X16;
+ }
+ if(s->decoding_error==0 && cbp){
+ /* decode each block */
+ for (i = 0; i < 6; i++) {
+ int ret= mpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, 0);
+ if(ret==DECODING_AC_LOST){
+ fprintf(stderr, "texture corrupted at %d %d (trying to continue with mc/dc only)\n", s->mb_x, s->mb_y);
+ s->decoding_error=DECODING_AC_LOST;
+ break;
+ }
+ }
+ }
+ }
+ } else { /* I-Frame */
+ int i;
+ s->mb_intra = 1;
+ s->ac_pred = s->pred_dir_table[xy]>>7;
+
+ /* decode each block */
+ for (i = 0; i < 6; i++) {
+ int ret= mpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, 1);
+ if(ret==DECODING_AC_LOST){
+ fprintf(stderr, "texture corrupted at %d %d (trying to continue with dc only)\n", s->mb_x, s->mb_y);
+ s->decoding_error=DECODING_AC_LOST;
+ cbp=0;
+ }else if(ret==DECODING_ACDC_LOST){
+ fprintf(stderr, "dc corrupted at %d %d\n", s->mb_x, s->mb_y);
+ return -1;
+ }
+ }
+ }
+
+ return 0;
+}
+#if 0
+static inline void decode_interlaced_info(MpegEncContext *s, int cbp, int mb_type){
+ s->mv_type= 0;
+ if(!s->progressive_sequence){
+ if(cbp || s->mb_intra)
+ s->interlaced_dct= get_bits1(&s->gb);
+
+ if(!s->mb_intra){
+ if( s->pict_type==P_TYPE //FIXME check that 4MV is forbidden
+ || (s->pict_type==S_TYPE && s->vol_sprite_usage==GMC_SPRITE && !s->mcsel)
+ || (s->pict_type==B_TYPE && mb_type!=0) ){
+
+ if(get_bits1(&s->gb)){
+ s->mv_type= MV_TYPE_FIELD;
+
+ if( s->pict_type==P_TYPE
+ || (s->pict_type==B_TYPE && mb_type!=2)){
+ s->field_select[0][0]= get_bits1(&s->gb);
+ s->field_select[0][1]= get_bits1(&s->gb);
+ }
+ if(s->pict_type==B_TYPE && mb_type!=3){
+ s->field_select[1][0]= get_bits1(&s->gb);
+ s->field_select[1][1]= get_bits1(&s->gb);
+ }
+ }else
+ s->mv_type= 0;
+ }
+ }
+ }
+}
+#endif
+
int h263_decode_mb(MpegEncContext *s,
DCTELEM block[6][64])
{
INT16 *mot_val;
static INT8 quant_tab[4] = { -1, -2, 1, 2 };
+ if(s->mb_x==0) PRINT_MB_TYPE("\n");
+
+ if(s->resync_marker){
+ if(s->resync_mb_x == s->mb_x && s->resync_mb_y+1 == s->mb_y){
+ s->first_slice_line=0;
+ }
+ }
+
+ if(s->data_partitioning && s->pict_type!=B_TYPE)
+ return mpeg4_decode_partitioned_mb(s, block);
+
if (s->pict_type == P_TYPE || s->pict_type==S_TYPE) {
if (get_bits1(&s->gb)) {
/* skip mb */
if(s->pict_type==S_TYPE && s->vol_sprite_usage==GMC_SPRITE){
const int a= s->sprite_warping_accuracy;
// int l = (1 << (s->f_code - 1)) * 32;
-
+ PRINT_MB_TYPE("G");
s->mcsel=1;
- s->mv[0][0][0] = RSHIFT(s->sprite_offset[0][0], a-s->quarter_sample);
- s->mv[0][0][1] = RSHIFT(s->sprite_offset[0][1], a-s->quarter_sample);
+ if(s->divx_version==500 && s->divx_build==413){
+ s->mv[0][0][0] = s->sprite_offset[0][0] / (1<<(a-s->quarter_sample));
+ s->mv[0][0][1] = s->sprite_offset[0][1] / (1<<(a-s->quarter_sample));
+ }else{
+ s->mv[0][0][0] = RSHIFT(s->sprite_offset[0][0], a-s->quarter_sample);
+ s->mv[0][0][1] = RSHIFT(s->sprite_offset[0][1], a-s->quarter_sample);
+ }
/* if (s->mv[0][0][0] < -l) s->mv[0][0][0]= -l;
else if (s->mv[0][0][0] >= l) s->mv[0][0][0]= l-1;
if (s->mv[0][0][1] < -l) s->mv[0][0][1]= -l;
s->mb_skiped = 0;
}else{
+ PRINT_MB_TYPE("S");
s->mcsel=0;
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
}
return 0;
}
- cbpc = get_vlc(&s->gb, &inter_MCBPC_vlc);
+ cbpc = get_vlc2(&s->gb, inter_MCBPC_vlc.table, INTER_MCBPC_VLC_BITS, 2);
//fprintf(stderr, "\tCBPC: %d", cbpc);
if (cbpc < 0)
return -1;
if(s->pict_type==S_TYPE && s->vol_sprite_usage==GMC_SPRITE && (cbpc & 16) == 0)
s->mcsel= get_bits1(&s->gb);
else s->mcsel= 0;
- cbpy = get_vlc(&s->gb, &cbpy_vlc);
+ cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1);
cbp = (cbpc & 3) | ((cbpy ^ 0xf) << 2);
if (dquant) {
- s->qscale += quant_tab[get_bits(&s->gb, 2)];
- if (s->qscale < 1)
- s->qscale = 1;
- else if (s->qscale > 31)
- s->qscale = 31;
+ change_qscale(s, quant_tab[get_bits(&s->gb, 2)]);
}
+ if((!s->progressive_sequence) && (cbp || s->workaround_bugs==2))
+ s->interlaced_dct= get_bits1(&s->gb);
+
s->mv_dir = MV_DIR_FORWARD;
if ((cbpc & 16) == 0) {
- /* 16x16 motion prediction */
- s->mv_type = MV_TYPE_16X16;
- h263_pred_motion(s, 0, &pred_x, &pred_y);
- if (s->umvplus_dec)
- mx = h263p_decode_umotion(s, pred_x);
- else if(!s->mcsel)
- mx = h263_decode_motion(s, pred_x, s->f_code);
- else {
- const int a= s->sprite_warping_accuracy;
+ if(s->mcsel){
+ const int a= s->sprite_warping_accuracy;
+ PRINT_MB_TYPE("G");
+ /* 16x16 global motion prediction */
+ s->mv_type = MV_TYPE_16X16;
// int l = (1 << (s->f_code - 1)) * 32;
- mx= RSHIFT(s->sprite_offset[0][0], a-s->quarter_sample);
-// if (mx < -l) mx= -l;
-// else if (mx >= l) mx= l-1;
- }
- if (mx >= 0xffff)
- return -1;
-
- if (s->umvplus_dec)
- my = h263p_decode_umotion(s, pred_y);
- else if(!s->mcsel)
- my = h263_decode_motion(s, pred_y, s->f_code);
- else{
- const int a= s->sprite_warping_accuracy;
+ if(s->divx_version==500 && s->divx_build==413){
+ mx = s->sprite_offset[0][0] / (1<<(a-s->quarter_sample));
+ my = s->sprite_offset[0][1] / (1<<(a-s->quarter_sample));
+ }else{
+ mx = RSHIFT(s->sprite_offset[0][0], a-s->quarter_sample);
+ my = RSHIFT(s->sprite_offset[0][1], a-s->quarter_sample);
+ }
// int l = (1 << (s->f_code - 1)) * 32;
- my= RSHIFT(s->sprite_offset[0][1], a-s->quarter_sample);
-// if (my < -l) my= -l;
-// else if (my >= l) my= l-1;
+ s->mv[0][0][0] = mx;
+ s->mv[0][0][1] = my;
+ }else if((!s->progressive_sequence) && get_bits1(&s->gb)){
+ PRINT_MB_TYPE("f");
+ /* 16x8 field motion prediction */
+ s->mv_type= MV_TYPE_FIELD;
+
+ s->field_select[0][0]= get_bits1(&s->gb);
+ s->field_select[0][1]= get_bits1(&s->gb);
+
+ h263_pred_motion(s, 0, &pred_x, &pred_y);
+
+ for(i=0; i<2; i++){
+ mx = h263_decode_motion(s, pred_x, s->f_code);
+ if (mx >= 0xffff)
+ return -1;
+
+ my = h263_decode_motion(s, pred_y/2, s->f_code);
+ if (my >= 0xffff)
+ return -1;
+
+ s->mv[0][i][0] = mx;
+ s->mv[0][i][1] = my;
+ }
+ }else{
+ PRINT_MB_TYPE("P");
+ /* 16x16 motion prediction */
+ s->mv_type = MV_TYPE_16X16;
+ h263_pred_motion(s, 0, &pred_x, &pred_y);
+ if (s->umvplus_dec)
+ mx = h263p_decode_umotion(s, pred_x);
+ else
+ mx = h263_decode_motion(s, pred_x, s->f_code);
+
+ if (mx >= 0xffff)
+ return -1;
+
+ if (s->umvplus_dec)
+ my = h263p_decode_umotion(s, pred_y);
+ else
+ my = h263_decode_motion(s, pred_y, s->f_code);
+
+ if (my >= 0xffff)
+ return -1;
+ s->mv[0][0][0] = mx;
+ s->mv[0][0][1] = my;
+
+ if (s->umvplus_dec && (mx - pred_x) == 1 && (my - pred_y) == 1)
+ skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
}
- if (my >= 0xffff)
- return -1;
- s->mv[0][0][0] = mx;
- s->mv[0][0][1] = my;
- /*fprintf(stderr, "\n MB %d", (s->mb_y * s->mb_width) + s->mb_x);
- fprintf(stderr, "\n\tmvx: %d\t\tpredx: %d", mx, pred_x);
- fprintf(stderr, "\n\tmvy: %d\t\tpredy: %d", my, pred_y);*/
- if (s->umvplus_dec && (mx - pred_x) == 1 && (my - pred_y) == 1)
- skip_bits1(&s->gb); /* Bit stuffing to prevent PSC */
-
} else {
+ PRINT_MB_TYPE("4");
s->mv_type = MV_TYPE_8X8;
for(i=0;i<4;i++) {
mot_val = h263_pred_motion(s, i, &pred_x, &pred_y);
int modb1; // first bit of modb
int modb2; // second bit of modb
int mb_type;
- int time_pp;
- int time_pb;
+ uint16_t time_pp;
+ uint16_t time_pb;
int xy;
s->mb_intra = 0; //B-frames never contain intra blocks
s->mcsel=0; // ... true gmc blocks
if(s->mb_x==0){
- s->last_mv[0][0][0]=
- s->last_mv[0][0][1]=
- s->last_mv[1][0][0]=
- s->last_mv[1][0][1]= 0;
+ for(i=0; i<2; i++){
+ s->last_mv[i][0][0]=
+ s->last_mv[i][0][1]=
+ s->last_mv[i][1][0]=
+ s->last_mv[i][1][1]= 0;
+ }
}
/* if we skipped it in the future P Frame than skip it now too */
s->mv[0][0][1] = 0;
s->mv[1][0][0] = 0;
s->mv[1][0][1] = 0;
- s->last_mv[0][0][0]=
- s->last_mv[0][0][1]=
- s->last_mv[1][0][0]=
- s->last_mv[1][0][1]= 0;
- s->mb_skiped = 1;
+ PRINT_MB_TYPE("s");
return 0;
}
- modb1= get_bits1(&s->gb);
- if(modb1==0){
+ modb1= get_bits1(&s->gb);
+ if(modb1){
+ mb_type=4; //like MB_TYPE_B_DIRECT but no vectors coded
+ cbp=0;
+ }else{
+ int field_mv;
+
modb2= get_bits1(&s->gb);
- mb_type= get_vlc(&s->gb, &mb_type_b_vlc);
- if(modb2==0) cbp= get_bits(&s->gb, 6);
- else cbp=0;
- if (mb_type && cbp) {
+ mb_type= get_vlc2(&s->gb, mb_type_b_vlc.table, MB_TYPE_B_VLC_BITS, 1);
+ if(modb2) cbp= 0;
+ else cbp= get_bits(&s->gb, 6);
+
+ if (mb_type!=MB_TYPE_B_DIRECT && cbp) {
if(get_bits1(&s->gb)){
- s->qscale +=get_bits1(&s->gb)*4 - 2;
- if (s->qscale < 1)
- s->qscale = 1;
- else if (s->qscale > 31)
- s->qscale = 31;
+ change_qscale(s, get_bits1(&s->gb)*4 - 2);
}
}
- }else{
- mb_type=4; //like 0 but no vectors coded
- cbp=0;
+ field_mv=0;
+
+ if(!s->progressive_sequence){
+ if(cbp)
+ s->interlaced_dct= get_bits1(&s->gb);
+
+ if(mb_type!=MB_TYPE_B_DIRECT && get_bits1(&s->gb)){
+ field_mv=1;
+
+ if(mb_type!=MB_TYPE_B_BACKW){
+ s->field_select[0][0]= get_bits1(&s->gb);
+ s->field_select[0][1]= get_bits1(&s->gb);
+ }
+ if(mb_type!=MB_TYPE_B_FORW){
+ s->field_select[1][0]= get_bits1(&s->gb);
+ s->field_select[1][1]= get_bits1(&s->gb);
+ }
+ }
+ }
+
+ s->mv_dir = 0;
+ if(mb_type!=MB_TYPE_B_DIRECT && !field_mv){
+ s->mv_type= MV_TYPE_16X16;
+ if(mb_type!=MB_TYPE_B_BACKW){
+ s->mv_dir = MV_DIR_FORWARD;
+
+ mx = h263_decode_motion(s, s->last_mv[0][0][0], s->f_code);
+ my = h263_decode_motion(s, s->last_mv[0][0][1], s->f_code);
+ s->last_mv[0][1][0]= s->last_mv[0][0][0]= s->mv[0][0][0] = mx;
+ s->last_mv[0][1][1]= s->last_mv[0][0][1]= s->mv[0][0][1] = my;
+ }
+
+ if(mb_type!=MB_TYPE_B_FORW){
+ s->mv_dir |= MV_DIR_BACKWARD;
+
+ mx = h263_decode_motion(s, s->last_mv[1][0][0], s->b_code);
+ my = h263_decode_motion(s, s->last_mv[1][0][1], s->b_code);
+ s->last_mv[1][1][0]= s->last_mv[1][0][0]= s->mv[1][0][0] = mx;
+ s->last_mv[1][1][1]= s->last_mv[1][0][1]= s->mv[1][0][1] = my;
+ }
+ if(mb_type!=MB_TYPE_B_DIRECT)
+ PRINT_MB_TYPE(mb_type==MB_TYPE_B_FORW ? "F" : (mb_type==MB_TYPE_B_BACKW ? "B" : "T"));
+ }else if(mb_type!=MB_TYPE_B_DIRECT){
+ s->mv_type= MV_TYPE_FIELD;
+
+ if(mb_type!=MB_TYPE_B_BACKW){
+ s->mv_dir = MV_DIR_FORWARD;
+
+ for(i=0; i<2; i++){
+ mx = h263_decode_motion(s, s->last_mv[0][i][0] , s->f_code);
+ my = h263_decode_motion(s, s->last_mv[0][i][1]/2, s->f_code);
+ s->last_mv[0][i][0]= s->mv[0][i][0] = mx;
+ s->last_mv[0][i][1]= (s->mv[0][i][1] = my)*2;
+ }
+ }
+
+ if(mb_type!=MB_TYPE_B_FORW){
+ s->mv_dir |= MV_DIR_BACKWARD;
+
+ for(i=0; i<2; i++){
+ mx = h263_decode_motion(s, s->last_mv[1][i][0] , s->b_code);
+ my = h263_decode_motion(s, s->last_mv[1][i][1]/2, s->b_code);
+ s->last_mv[1][i][0]= s->mv[1][i][0] = mx;
+ s->last_mv[1][i][1]= (s->mv[1][i][1] = my)*2;
+ }
+ }
+ if(mb_type!=MB_TYPE_B_DIRECT)
+ PRINT_MB_TYPE(mb_type==MB_TYPE_B_FORW ? "f" : (mb_type==MB_TYPE_B_BACKW ? "b" : "t"));
+ }
}
- s->mv_type = MV_TYPE_16X16; // we'll switch to 8x8 only if the last P frame had 8x8 for this MB and mb_type=0 here
- mx=my=0; //for case 4, we could put this to the mb_type=4 but than gcc compains about uninitalized mx/my
- switch(mb_type)
- {
- case 0:
- mx = h263_decode_motion(s, 0, 1);
- my = h263_decode_motion(s, 0, 1);
- case 4:
+
+ if(mb_type==4 || mb_type==MB_TYPE_B_DIRECT){
+ int mb_index= s->mb_x + s->mb_y*s->mb_width;
+ int i;
+
+ if(mb_type==4)
+ mx=my=0;
+ else{
+ mx = h263_decode_motion(s, 0, 1);
+ my = h263_decode_motion(s, 0, 1);
+ }
+
s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD | MV_DIRECT;
xy= s->block_index[0];
- time_pp= s->last_non_b_time[0] - s->last_non_b_time[1];
- time_pb= s->time - s->last_non_b_time[1];
-//if(time_pp>3000 )printf("%d %d ", time_pp, time_pb);
- //FIXME 4MV
+ time_pp= s->pp_time;
+ time_pb= s->pb_time;
+
//FIXME avoid divides
- s->mv[0][0][0] = s->motion_val[xy][0]*time_pb/time_pp + mx;
- s->mv[0][0][1] = s->motion_val[xy][1]*time_pb/time_pp + my;
- s->mv[1][0][0] = mx ? s->mv[0][0][0] - s->motion_val[xy][0]
- : s->motion_val[xy][0]*(time_pb - time_pp)/time_pp + mx;
- s->mv[1][0][1] = my ? s->mv[0][0][1] - s->motion_val[xy][1]
- : s->motion_val[xy][1]*(time_pb - time_pp)/time_pp + my;
-/* s->mv[0][0][0] =
- s->mv[0][0][1] =
- s->mv[1][0][0] =
- s->mv[1][0][1] = 1000;*/
- break;
- case 1:
- s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
- mx = h263_decode_motion(s, s->last_mv[0][0][0], s->f_code);
- my = h263_decode_motion(s, s->last_mv[0][0][1], s->f_code);
- s->last_mv[0][0][0]= s->mv[0][0][0] = mx;
- s->last_mv[0][0][1]= s->mv[0][0][1] = my;
-
- mx = h263_decode_motion(s, s->last_mv[1][0][0], s->b_code);
- my = h263_decode_motion(s, s->last_mv[1][0][1], s->b_code);
- s->last_mv[1][0][0]= s->mv[1][0][0] = mx;
- s->last_mv[1][0][1]= s->mv[1][0][1] = my;
- break;
- case 2:
- s->mv_dir = MV_DIR_BACKWARD;
- mx = h263_decode_motion(s, s->last_mv[1][0][0], s->b_code);
- my = h263_decode_motion(s, s->last_mv[1][0][1], s->b_code);
- s->last_mv[1][0][0]= s->mv[1][0][0] = mx;
- s->last_mv[1][0][1]= s->mv[1][0][1] = my;
- break;
- case 3:
- s->mv_dir = MV_DIR_FORWARD;
- mx = h263_decode_motion(s, s->last_mv[0][0][0], s->f_code);
- my = h263_decode_motion(s, s->last_mv[0][0][1], s->f_code);
- s->last_mv[0][0][0]= s->mv[0][0][0] = mx;
- s->last_mv[0][0][1]= s->mv[0][0][1] = my;
- break;
- default: return -1;
+ switch(s->co_located_type_table[mb_index]){
+ case 0:
+ s->mv_type= MV_TYPE_16X16;
+ s->mv[0][0][0] = s->motion_val[xy][0]*time_pb/time_pp + mx;
+ s->mv[0][0][1] = s->motion_val[xy][1]*time_pb/time_pp + my;
+ s->mv[1][0][0] = mx ? s->mv[0][0][0] - s->motion_val[xy][0]
+ : s->motion_val[xy][0]*(time_pb - time_pp)/time_pp;
+ s->mv[1][0][1] = my ? s->mv[0][0][1] - s->motion_val[xy][1]
+ : s->motion_val[xy][1]*(time_pb - time_pp)/time_pp;
+ PRINT_MB_TYPE(mb_type==4 ? "D" : "S");
+ break;
+ case CO_LOCATED_TYPE_4MV:
+ s->mv_type = MV_TYPE_8X8;
+ for(i=0; i<4; i++){
+ xy= s->block_index[i];
+ s->mv[0][i][0] = s->motion_val[xy][0]*time_pb/time_pp + mx;
+ s->mv[0][i][1] = s->motion_val[xy][1]*time_pb/time_pp + my;
+ s->mv[1][i][0] = mx ? s->mv[0][i][0] - s->motion_val[xy][0]
+ : s->motion_val[xy][0]*(time_pb - time_pp)/time_pp;
+ s->mv[1][i][1] = my ? s->mv[0][i][1] - s->motion_val[xy][1]
+ : s->motion_val[xy][1]*(time_pb - time_pp)/time_pp;
+ }
+ PRINT_MB_TYPE("4");
+ break;
+ case CO_LOCATED_TYPE_FIELDMV:
+ s->mv_type = MV_TYPE_FIELD;
+ for(i=0; i<2; i++){
+ if(s->top_field_first){
+ time_pp= s->pp_field_time - s->field_select_table[mb_index][i] + i;
+ time_pb= s->pb_field_time - s->field_select_table[mb_index][i] + i;
+ }else{
+ time_pp= s->pp_field_time + s->field_select_table[mb_index][i] - i;
+ time_pb= s->pb_field_time + s->field_select_table[mb_index][i] - i;
+ }
+ s->mv[0][i][0] = s->field_mv_table[mb_index][i][0]*time_pb/time_pp + mx;
+ s->mv[0][i][1] = s->field_mv_table[mb_index][i][1]*time_pb/time_pp + my;
+ s->mv[1][i][0] = mx ? s->mv[0][i][0] - s->field_mv_table[mb_index][i][0]
+ : s->field_mv_table[mb_index][i][0]*(time_pb - time_pp)/time_pp;
+ s->mv[1][i][1] = my ? s->mv[0][i][1] - s->field_mv_table[mb_index][i][1]
+ : s->field_mv_table[mb_index][i][1]*(time_pb - time_pp)/time_pp;
+ }
+ PRINT_MB_TYPE("=");
+ break;
+ }
+ }
+
+ if(mb_type<0 || mb_type>4){
+ printf("illegal MB_type\n");
+ return -1;
}
} else { /* I-Frame */
- cbpc = get_vlc(&s->gb, &intra_MCBPC_vlc);
+ cbpc = get_vlc2(&s->gb, intra_MCBPC_vlc.table, INTRA_MCBPC_VLC_BITS, 1);
if (cbpc < 0)
return -1;
dquant = cbpc & 4;
if (s->ac_pred && s->h263_aic)
s->h263_aic_dir = get_bits1(&s->gb);
}
- if (s->h263_aic) {
- s->y_dc_scale = 2 * s->qscale;
- s->c_dc_scale = 2 * s->qscale;
- }
- cbpy = get_vlc(&s->gb, &cbpy_vlc);
+ PRINT_MB_TYPE(s->ac_pred ? "A" : "I");
+
+ cbpy = get_vlc2(&s->gb, cbpy_vlc.table, CBPY_VLC_BITS, 1);
+ if(cbpy<0) return -1;
cbp = (cbpc & 3) | (cbpy << 2);
if (dquant) {
- s->qscale += quant_tab[get_bits(&s->gb, 2)];
- if (s->qscale < 1)
- s->qscale = 1;
- else if (s->qscale > 31)
- s->qscale = 31;
+ change_qscale(s, quant_tab[get_bits(&s->gb, 2)]);
+ }
+ if(!s->progressive_sequence)
+ s->interlaced_dct= get_bits1(&s->gb);
+
+ /* decode each block */
+ if (s->h263_pred) {
+ for (i = 0; i < 6; i++) {
+ if (mpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, 1) < 0)
+ return -1;
+ }
+ } else {
+ for (i = 0; i < 6; i++) {
+ if (h263_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1) < 0)
+ return -1;
+ }
}
+ return 0;
}
/* decode each block */
if (s->h263_pred) {
- for (i = 0; i < 6; i++) {
- if (mpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1) < 0)
+ for (i = 0; i < 6; i++) {
+ if (mpeg4_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1, 0) < 0)
return -1;
- }
+ }
} else {
- for (i = 0; i < 6; i++) {
- if (h263_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1) < 0)
+ for (i = 0; i < 6; i++) {
+ if (h263_decode_block(s, block[i], i, (cbp >> (5 - i)) & 1) < 0)
return -1;
- }
+ }
}
return 0;
}
static int h263_decode_motion(MpegEncContext * s, int pred, int f_code)
{
- int code, val, sign, shift, l, m;
+ int code, val, sign, shift, l;
- code = get_vlc(&s->gb, &mv_vlc);
+ code = get_vlc2(&s->gb, mv_vlc.table, MV_VLC_BITS, 2);
if (code < 0)
return 0xffff;
if (sign)
val = -val;
val += pred;
-
+
/* modulo decoding */
if (!s->h263_long_vectors) {
l = (1 << (f_code - 1)) * 32;
- m = 2 * l;
if (val < -l) {
- val += m;
+ val += l<<1;
} else if (val >= l) {
- val -= m;
+ val -= l<<1;
}
} else {
/* horrible h263 long vector mode */
}
for(;;) {
- code = get_vlc(&s->gb, &rl->vlc);
+ code = get_vlc2(&s->gb, rl->vlc.table, TEX_VLC_BITS, 2);
if (code < 0)
return -1;
if (code == rl->n) {
if (s->h263_rv10 && level == -128) {
/* XXX: should patch encoder too */
level = get_bits(&s->gb, 12);
- level = (level << 20) >> 20;
+ level= (level + ((-1)<<11)) ^ ((-1)<<11); //sign extension
}
} else {
run = rl->table_run[code];
return 0;
}
-static int mpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr)
+static inline int mpeg4_decode_dc(MpegEncContext * s, int n, int *dir_ptr)
{
int level, pred, code;
UINT16 *dc_val;
if (n < 4)
- code = get_vlc(&s->gb, &dc_lum);
+ code = get_vlc2(&s->gb, dc_lum.table, DC_VLC_BITS, 1);
else
- code = get_vlc(&s->gb, &dc_chrom);
- if (code < 0)
+ code = get_vlc2(&s->gb, dc_chrom.table, DC_VLC_BITS, 1);
+ if (code < 0 || code > 9 /* && s->nbit<9 */){
+ fprintf(stderr, "illegal dc vlc\n");
return -1;
+ }
if (code == 0) {
level = 0;
} else {
level = get_bits(&s->gb, code);
if ((level >> (code - 1)) == 0) /* if MSB not set it is negative*/
level = - (level ^ ((1 << code) - 1));
- if (code > 8)
- skip_bits1(&s->gb); /* marker */
+ if (code > 8){
+ if(get_bits1(&s->gb)==0){ /* marker */
+ fprintf(stderr, "dc marker bit missing\n");
+ return -1;
+ }
+ }
}
- pred = mpeg4_pred_dc(s, n, &dc_val, dir_ptr);
+ pred = ff_mpeg4_pred_dc(s, n, &dc_val, dir_ptr);
level += pred;
if (level < 0)
level = 0;
return level;
}
-static int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
- int n, int coded)
+/**
+ * decode a block
+ * returns 0 if everything went ok
+ * returns DECODING_AC_LOST if an error was detected during AC decoding
+ * returns DECODING_ACDC_LOST if an error was detected during DC decoding
+ */
+static inline int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
+ int n, int coded, int intra)
{
- int code, level, i, j, last, run;
+ int level, i, last, run;
int dc_pred_dir;
- RLTable *rl;
- const UINT8 *scan_table;
+ RLTable * rl;
+ RL_VLC_ELEM * rl_vlc;
+ const UINT8 * scan_table;
+ int qmul, qadd;
- if (s->mb_intra) {
+ if(intra) {
/* DC coef */
- level = mpeg4_decode_dc(s, n, &dc_pred_dir);
- if (level < 0)
- return -1;
+ if(s->data_partitioning && s->pict_type!=B_TYPE){
+ level = s->dc_val[0][ s->block_index[n] ];
+ if(n<4) level= (level + (s->y_dc_scale>>1))/s->y_dc_scale; //FIXME optimizs
+ else level= (level + (s->c_dc_scale>>1))/s->c_dc_scale;
+ dc_pred_dir= (s->pred_dir_table[s->mb_x + s->mb_y*s->mb_width]<<n)&32;
+ }else{
+ level = mpeg4_decode_dc(s, n, &dc_pred_dir);
+ if (level < 0)
+ return DECODING_ACDC_LOST;
+ }
block[0] = level;
- i = 1;
+ i = 0;
if (!coded)
goto not_coded;
rl = &rl_intra;
- if (s->ac_pred) {
+ rl_vlc = rl_intra.rl_vlc[0];
+ if(s->alternate_scan)
+ scan_table = ff_alternate_vertical_scan; /* left */
+ else if (s->ac_pred) {
if (dc_pred_dir == 0)
scan_table = ff_alternate_vertical_scan; /* left */
else
} else {
scan_table = zigzag_direct;
}
+ qmul=1;
+ qadd=0;
} else {
- i = 0;
+ i = -1;
if (!coded) {
- s->block_last_index[n] = i - 1;
+ s->block_last_index[n] = i;
return 0;
}
rl = &rl_inter;
- scan_table = zigzag_direct;
- }
+
+ if(s->alternate_scan)
+ scan_table = ff_alternate_vertical_scan; /* left */
+ else
+ scan_table = zigzag_direct;
+ if(s->mpeg_quant){
+ qmul=1;
+ qadd=0;
+ rl_vlc = rl_inter.rl_vlc[0];
+ }else{
+ qmul = s->qscale << 1;
+ qadd = (s->qscale - 1) | 1;
+ rl_vlc = rl_inter.rl_vlc[s->qscale];
+ }
+ }
+ {
+ OPEN_READER(re, &s->gb);
for(;;) {
- code = get_vlc(&s->gb, &rl->vlc);
- if (code < 0)
- return -1;
- if (code == rl->n) {
+ UPDATE_CACHE(re, &s->gb);
+ GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2);
+ if (level==0) {
+ int cache;
+ cache= GET_CACHE(re, &s->gb);
/* escape */
- if (get_bits1(&s->gb) != 0) {
- if (get_bits1(&s->gb) != 0) {
+ if (cache&0x80000000) {
+ if (cache&0x40000000) {
/* third escape */
- last = get_bits1(&s->gb);
- run = get_bits(&s->gb, 6);
- get_bits1(&s->gb); /* marker */
- level = get_bits(&s->gb, 12);
- level = (level << 20) >> 20; /* sign extend */
- skip_bits1(&s->gb); /* marker */
+ SKIP_CACHE(re, &s->gb, 2);
+ last= SHOW_UBITS(re, &s->gb, 1); SKIP_CACHE(re, &s->gb, 1);
+ run= SHOW_UBITS(re, &s->gb, 6); LAST_SKIP_CACHE(re, &s->gb, 6);
+ SKIP_COUNTER(re, &s->gb, 2+1+6);
+ UPDATE_CACHE(re, &s->gb);
+
+ if(SHOW_UBITS(re, &s->gb, 1)==0){
+ fprintf(stderr, "1. marker bit missing in 3. esc\n");
+ return DECODING_AC_LOST;
+ }; SKIP_CACHE(re, &s->gb, 1);
+
+ level= SHOW_SBITS(re, &s->gb, 12); SKIP_CACHE(re, &s->gb, 12);
+
+ if(SHOW_UBITS(re, &s->gb, 1)==0){
+ fprintf(stderr, "2. marker bit missing in 3. esc\n");
+ return DECODING_AC_LOST;
+ }; LAST_SKIP_CACHE(re, &s->gb, 1);
+
+ SKIP_COUNTER(re, &s->gb, 1+12+1);
+
+ if(level*s->qscale>1024 || level*s->qscale<-1024){
+ fprintf(stderr, "|level| overflow in 3. esc, qp=%d\n", s->qscale);
+ return DECODING_AC_LOST;
+ }
+#if 1
+ {
+ const int abs_level= ABS(level);
+ if(abs_level<=MAX_LEVEL && run<=MAX_RUN && s->error_resilience>=0){
+ const int run1= run - rl->max_run[last][abs_level] - 1;
+ if(abs_level <= rl->max_level[last][run]){
+ fprintf(stderr, "illegal 3. esc, vlc encoding possible\n");
+ return DECODING_AC_LOST;
+ }
+ if(abs_level <= rl->max_level[last][run]*2){
+ fprintf(stderr, "illegal 3. esc, esc 1 encoding possible\n");
+ return DECODING_AC_LOST;
+ }
+ if(run1 >= 0 && abs_level <= rl->max_level[last][run1]){
+ fprintf(stderr, "illegal 3. esc, esc 2 encoding possible\n");
+ return DECODING_AC_LOST;
+ }
+ }
+ }
+#endif
+ if (level>0) level= level * qmul + qadd;
+ else level= level * qmul - qadd;
+
+ i+= run + 1;
+ if(last) i+=192;
} else {
/* second escape */
- code = get_vlc(&s->gb, &rl->vlc);
- if (code < 0 || code >= rl->n)
- return -1;
- run = rl->table_run[code];
- level = rl->table_level[code];
- last = code >= rl->last;
- run += rl->max_run[last][level] + 1;
- if (get_bits1(&s->gb))
- level = -level;
+#if MIN_CACHE_BITS < 20
+ LAST_SKIP_BITS(re, &s->gb, 2);
+ UPDATE_CACHE(re, &s->gb);
+#else
+ SKIP_BITS(re, &s->gb, 2);
+#endif
+ GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2);
+ i+= run + rl->max_run[run>>7][level/qmul] +1; //FIXME opt indexing
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ LAST_SKIP_BITS(re, &s->gb, 1);
}
} else {
/* first escape */
- code = get_vlc(&s->gb, &rl->vlc);
- if (code < 0 || code >= rl->n)
- return -1;
- run = rl->table_run[code];
- level = rl->table_level[code];
- last = code >= rl->last;
- level += rl->max_level[last][run];
- if (get_bits1(&s->gb))
- level = -level;
+#if MIN_CACHE_BITS < 19
+ LAST_SKIP_BITS(re, &s->gb, 1);
+ UPDATE_CACHE(re, &s->gb);
+#else
+ SKIP_BITS(re, &s->gb, 1);
+#endif
+ GET_RL_VLC(level, run, re, &s->gb, rl_vlc, TEX_VLC_BITS, 2);
+ i+= run;
+ level = level + rl->max_level[run>>7][(run-1)&63] * qmul;//FIXME opt indexing
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ LAST_SKIP_BITS(re, &s->gb, 1);
}
} else {
- run = rl->table_run[code];
- level = rl->table_level[code];
- last = code >= rl->last;
- if (get_bits1(&s->gb))
- level = -level;
+ i+= run;
+ level = (level ^ SHOW_SBITS(re, &s->gb, 1)) - SHOW_SBITS(re, &s->gb, 1);
+ LAST_SKIP_BITS(re, &s->gb, 1);
}
- i += run;
- if (i >= 64)
- return -1;
- j = scan_table[i];
- block[j] = level;
- i++;
- if (last)
+ if (i > 62){
+ i-= 192;
+ if(i&(~63)){
+ fprintf(stderr, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y);
+ return DECODING_AC_LOST;
+ }
+
+ block[scan_table[i]] = level;
break;
+ }
+
+ block[scan_table[i]] = level;
}
+ CLOSE_READER(re, &s->gb);
+ }
not_coded:
if (s->mb_intra) {
mpeg4_pred_ac(s, block, n, dc_pred_dir);
if (s->ac_pred) {
- i = 64; /* XXX: not optimal */
+ i = 63; /* XXX: not optimal */
}
}
- s->block_last_index[n] = i - 1;
+ s->block_last_index[n] = i;
return 0;
}
{
int format, width, height;
- /* picture header */
- if (get_bits(&s->gb, 22) != 0x20)
+ /* picture start code */
+ if (get_bits(&s->gb, 22) != 0x20) {
+ fprintf(stderr, "Bad picture start code\n");
return -1;
+ }
+ /* temporal reference */
s->picture_number = get_bits(&s->gb, 8); /* picture timestamp */
-
- if (get_bits1(&s->gb) != 1)
- return -1; /* marker */
- if (get_bits1(&s->gb) != 0)
+
+ /* PTYPE starts here */
+ if (get_bits1(&s->gb) != 1) {
+ /* marker */
+ fprintf(stderr, "Bad marker\n");
+ return -1;
+ }
+ if (get_bits1(&s->gb) != 0) {
+ fprintf(stderr, "Bad H263 id\n");
return -1; /* h263 id */
+ }
skip_bits1(&s->gb); /* split screen off */
skip_bits1(&s->gb); /* camera off */
skip_bits1(&s->gb); /* freeze picture release off */
s->gob_number = 0;
format = get_bits(&s->gb, 3);
+ /*
+ 0 forbidden
+ 1 sub-QCIF
+ 10 QCIF
+ 7 extended PTYPE (PLUSPTYPE)
+ */
if (format != 7 && format != 6) {
s->h263_plus = 0;
s->unrestricted_mv = get_bits1(&s->gb);
s->h263_long_vectors = s->unrestricted_mv;
- if (get_bits1(&s->gb) != 0)
+ if (get_bits1(&s->gb) != 0) {
+ fprintf(stderr, "H263 SAC not supported\n");
return -1; /* SAC: off */
+ }
if (get_bits1(&s->gb) != 0) {
s->mv_type = MV_TYPE_8X8; /* Advanced prediction mode */
}
- if (get_bits1(&s->gb) != 0)
+ if (get_bits1(&s->gb) != 0) {
+ fprintf(stderr, "H263 PB frame not supported\n");
return -1; /* not PB frame */
-
+ }
s->qscale = get_bits(&s->gb, 5);
skip_bits1(&s->gb); /* Continuous Presence Multipoint mode: off */
} else {
/* H.263v2 */
s->h263_plus = 1;
ufep = get_bits(&s->gb, 3); /* Update Full Extended PTYPE */
-
+
+ /* ufep other than 0 and 1 are reserved */
if (ufep == 1) {
/* OPPTYPE */
format = get_bits(&s->gb, 3);
+ dprintf("ufep=1, format: %d\n", format);
skip_bits(&s->gb,1); /* Custom PCF */
s->umvplus_dec = get_bits(&s->gb, 1); /* Unrestricted Motion Vector */
skip_bits1(&s->gb); /* Syntax-based Arithmetic Coding (SAC) */
if (get_bits1(&s->gb) != 0) { /* Advanced Intra Coding (AIC) */
s->h263_aic = 1;
}
+
skip_bits(&s->gb, 7);
+ /* these are the 7 bits: (in order of appearence */
+ /* Deblocking Filter */
+ /* Slice Structured */
+ /* Reference Picture Selection */
+ /* Independent Segment Decoding */
+ /* Alternative Inter VLC */
+ /* Modified Quantization */
+ /* Prevent start code emulation */
+
skip_bits(&s->gb, 3); /* Reserved */
- } else if (ufep != 0)
+ } else if (ufep != 0) {
+ fprintf(stderr, "Bad UFEP type (%d)\n", ufep);
return -1;
+ }
/* MPPTYPE */
- s->pict_type = get_bits(&s->gb, 3) + 1;
+ s->pict_type = get_bits(&s->gb, 3) + I_TYPE;
+ dprintf("pict_type: %d\n", s->pict_type);
if (s->pict_type != I_TYPE &&
s->pict_type != P_TYPE)
return -1;
skip_bits(&s->gb, 2);
s->no_rounding = get_bits1(&s->gb);
- //fprintf(stderr, "\nRTYPE: %d", s->no_rounding);
+ dprintf("RTYPE: %d\n", s->no_rounding);
skip_bits(&s->gb, 4);
/* Get the picture dimensions */
if (ufep) {
if (format == 6) {
/* Custom Picture Format (CPFMT) */
- skip_bits(&s->gb, 4); /* aspect ratio */
+ s->aspect_ratio_info = get_bits(&s->gb, 4);
+ dprintf("aspect: %d\n", s->aspect_ratio_info);
+ /* aspect ratios:
+ 0 - forbidden
+ 1 - 1:1
+ 2 - 12:11 (CIF 4:3)
+ 3 - 10:11 (525-type 4:3)
+ 4 - 16:11 (CIF 16:9)
+ 5 - 40:33 (525-type 16:9)
+ 6-14 - reserved
+ */
width = (get_bits(&s->gb, 9) + 1) * 4;
skip_bits1(&s->gb);
height = get_bits(&s->gb, 9) * 4;
-#ifdef DEBUG
- fprintf(stderr,"\nH.263+ Custom picture: %dx%d\n",width,height);
-#endif
- }
- else {
+ dprintf("\nH.263+ Custom picture: %dx%d\n",width,height);
+ if (s->aspect_ratio_info == FF_ASPECT_EXTENDED) {
+ /* aspected dimensions */
+ s->aspected_width = get_bits(&s->gb, 8);
+ s->aspected_height = get_bits(&s->gb, 8);
+ }
+ } else {
width = h263_format[format][0];
height = h263_format[format][1];
}
skip_bits(&s->gb, 8);
}
s->f_code = 1;
+
+ if(s->h263_aic){
+ s->y_dc_scale_table=
+ s->c_dc_scale_table= h263_aic_dc_scale_table;
+ }else{
+ s->y_dc_scale_table=
+ s->c_dc_scale_table= ff_mpeg1_dc_scale_table;
+ }
+
return 0;
}
// the idea behind this virtual_ref mess is to be able to use shifts later per pixel instead of divides
// so the distance between points is converted from w&h based to w2&h2 based which are of the 2^x form
virtual_ref[0][0]= 16*(vop_ref[0][0] + w2)
- + RDIV(((w - w2)*(r*sprite_ref[0][0] - 16*vop_ref[0][0]) + w2*(r*sprite_ref[1][0] - 16*vop_ref[1][0])),w);
+ + 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);
virtual_ref[0][1]= 16*vop_ref[0][1]
- + RDIV(((w - w2)*(r*sprite_ref[0][1] - 16*vop_ref[0][1]) + w2*(r*sprite_ref[1][1] - 16*vop_ref[1][1])),w);
+ + 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);
virtual_ref[1][0]= 16*vop_ref[0][0]
- + RDIV(((h - h2)*(r*sprite_ref[0][0] - 16*vop_ref[0][0]) + h2*(r*sprite_ref[2][0] - 16*vop_ref[2][0])),h);
+ + 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);
virtual_ref[1][1]= 16*(vop_ref[0][1] + h2)
- + RDIV(((h - h2)*(r*sprite_ref[0][1] - 16*vop_ref[0][1]) + h2*(r*sprite_ref[2][1] - 16*vop_ref[2][1])),h);
+ + 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);
switch(s->num_sprite_warping_points)
{
else
s->real_sprite_warping_points= s->num_sprite_warping_points;
+//printf("%d %d %d %d\n", d[0][0], d[0][1], s->sprite_offset[0][0], s->sprite_offset[0][1]);
}
/* decode mpeg4 VOP header */
int mpeg4_decode_picture_header(MpegEncContext * s)
{
int time_incr, startcode, state, v;
+ int time_increment;
redo:
/* search next start code */
break;
}
state = ((state << 8) | v) & 0xffffff;
- /* XXX: really detect end of frame */
- if (state == 0){
- printf("illegal zero code found\n");
- return -1;
+ if( get_bits_count(&s->gb) > s->gb.size*8-32){
+ if(s->gb.size>50){
+ printf("no VOP startcode found, frame size was=%d\n", s->gb.size);
+ return -1;
+ }else{
+ printf("frame skip\n");
+ return FRAME_SKIPED;
+ }
}
}
//printf("startcode %X %d\n", startcode, get_bits_count(&s->gb));
/* vol header */
skip_bits(&s->gb, 1); /* random access */
- skip_bits(&s->gb, 8); /* vo_type */
+ s->vo_type= get_bits(&s->gb, 8);
if (get_bits1(&s->gb) != 0) { /* is_ol_id */
vo_ver_id = get_bits(&s->gb, 4); /* vo_ver_id */
skip_bits(&s->gb, 3); /* vo_priority */
} else {
vo_ver_id = 1;
}
-
+//printf("vo type:%d\n",s->vo_type);
s->aspect_ratio_info= get_bits(&s->gb, 4);
- if(s->aspect_ratio_info == EXTENDET_PAR){
- skip_bits(&s->gb, 8); //par_width
- skip_bits(&s->gb, 8); // par_height
+ if(s->aspect_ratio_info == FF_ASPECT_EXTENDED){
+ s->aspected_width = get_bits(&s->gb, 8); // par_width
+ s->aspected_height = get_bits(&s->gb, 8); // par_height
}
- if(get_bits1(&s->gb)){ /* vol control parameter */
- printf("vol control parameter not supported\n");
- return -1;
+
+ if ((s->vol_control_parameters=get_bits1(&s->gb))) { /* vol control parameter */
+ int chroma_format= get_bits(&s->gb, 2);
+ if(chroma_format!=1){
+ printf("illegal chroma format\n");
+ }
+ s->low_delay= get_bits1(&s->gb);
+ if(get_bits1(&s->gb)){ /* vbv parameters */
+ get_bits(&s->gb, 15); /* first_half_bitrate */
+ skip_bits1(&s->gb); /* marker */
+ get_bits(&s->gb, 15); /* latter_half_bitrate */
+ skip_bits1(&s->gb); /* marker */
+ get_bits(&s->gb, 15); /* first_half_vbv_buffer_size */
+ skip_bits1(&s->gb); /* marker */
+ get_bits(&s->gb, 3); /* latter_half_vbv_buffer_size */
+ get_bits(&s->gb, 11); /* first_half_vbv_occupancy */
+ skip_bits1(&s->gb); /* marker */
+ get_bits(&s->gb, 15); /* latter_half_vbv_occupancy */
+ skip_bits1(&s->gb); /* marker */
+ }
+ }else{
+ // set low delay flag only once so the smart? low delay detection wont be overriden
+ if(s->picture_number==0)
+ s->low_delay=0;
}
+
s->shape = get_bits(&s->gb, 2); /* vol shape */
if(s->shape != RECT_SHAPE) printf("only rectangular vol supported\n");
if(s->shape == GRAY_SHAPE && vo_ver_id != 1){
skip_bits1(&s->gb); /* marker */
s->time_increment_resolution = get_bits(&s->gb, 16);
+
s->time_increment_bits = av_log2(s->time_increment_resolution - 1) + 1;
if (s->time_increment_bits < 1)
s->time_increment_bits = 1;
skip_bits1(&s->gb); /* marker */
height = get_bits(&s->gb, 13);
skip_bits1(&s->gb); /* marker */
+ if(width && height){ /* they should be non zero but who knows ... */
+ s->width = width;
+ s->height = height;
+// printf("width/height: %d %d\n", width, height);
+ }
}
- if(get_bits1(&s->gb)) printf("interlaced not supported\n"); /* interlaced */
- if(!get_bits1(&s->gb)) printf("OBMC not supported\n"); /* OBMC Disable */
+ s->progressive_sequence= get_bits1(&s->gb)^1;
+ if(!get_bits1(&s->gb)) printf("OBMC not supported (very likely buggy encoder)\n"); /* OBMC Disable */
if (vo_ver_id == 1) {
s->vol_sprite_usage = get_bits1(&s->gb); /* vol_sprite_usage */
} else {
if (get_bits1(&s->gb) == 1) { /* not_8_bit */
s->quant_precision = get_bits(&s->gb, 4); /* quant_precision */
if(get_bits(&s->gb, 4)!=8) printf("N-bit not supported\n"); /* bits_per_pixel */
+ if(s->quant_precision!=5) printf("quant precission %d\n", s->quant_precision);
} else {
s->quant_precision = 5;
}
// FIXME a bunch of grayscale shape things
- if(get_bits1(&s->gb)) printf("Quant-Type not supported\n"); /* vol_quant_type */ //FIXME
+
+ if((s->mpeg_quant=get_bits1(&s->gb))){ /* vol_quant_type */
+ int i, j, v;
+
+ /* load default matrixes */
+ for(i=0; i<64; i++){
+ v= ff_mpeg4_default_intra_matrix[i];
+ s->intra_matrix[i]= v;
+ s->chroma_intra_matrix[i]= v;
+
+ v= ff_mpeg4_default_non_intra_matrix[i];
+ s->inter_matrix[i]= v;
+ s->chroma_inter_matrix[i]= v;
+ }
+
+ /* load custom intra matrix */
+ if(get_bits1(&s->gb)){
+ for(i=0; i<64; i++){
+ v= get_bits(&s->gb, 8);
+ if(v==0) break;
+
+ j= zigzag_direct[i];
+ s->intra_matrix[j]= v;
+ s->chroma_intra_matrix[j]= v;
+ }
+ }
+
+ /* load custom non intra matrix */
+ if(get_bits1(&s->gb)){
+ for(i=0; i<64; i++){
+ v= get_bits(&s->gb, 8);
+ if(v==0) break;
+
+ j= zigzag_direct[i];
+ s->inter_matrix[j]= v;
+ s->chroma_inter_matrix[j]= v;
+ }
+
+ /* replicate last value */
+ for(; i<64; i++){
+ j= zigzag_direct[i];
+ s->inter_matrix[j]= v;
+ s->chroma_inter_matrix[j]= v;
+ }
+ }
+
+ // FIXME a bunch of grayscale shape things
+ }
+
if(vo_ver_id != 1)
s->quarter_sample= get_bits1(&s->gb);
else s->quarter_sample=0;
if(!get_bits1(&s->gb)) printf("Complexity estimation not supported\n");
-#if 0
- if(get_bits1(&s->gb)) printf("resync disable\n");
-#else
- skip_bits1(&s->gb); /* resync_marker_disabled */
-#endif
- s->data_partioning= get_bits1(&s->gb);
- if(s->data_partioning){
- printf("data partitioning not supported\n");
- skip_bits1(&s->gb); // reversible vlc
+
+ s->resync_marker= !get_bits1(&s->gb); /* resync_marker_disabled */
+
+ s->data_partitioning= get_bits1(&s->gb);
+ if(s->data_partitioning){
+ s->rvlc= get_bits1(&s->gb);
+ if(s->rvlc){
+ printf("reversible vlc not supported\n");
+ }
}
if(vo_ver_id != 1) {
}
s->scalability= get_bits1(&s->gb);
+ if(s->workaround_bugs==1) s->scalability=0;
if (s->scalability) {
- printf("bad scalability!!!\n");
- return -1;
+ int dummy= s->hierachy_type= get_bits1(&s->gb);
+ int ref_layer_id= get_bits(&s->gb, 4);
+ int ref_layer_sampling_dir= get_bits1(&s->gb);
+ int h_sampling_factor_n= get_bits(&s->gb, 5);
+ int h_sampling_factor_m= get_bits(&s->gb, 5);
+ int v_sampling_factor_n= get_bits(&s->gb, 5);
+ int v_sampling_factor_m= get_bits(&s->gb, 5);
+ s->enhancement_type= get_bits1(&s->gb);
+ // bin shape stuff FIXME
+ printf("scalability not supported\n");
}
}
//printf("end Data %X %d\n", show_bits(&s->gb, 32), get_bits_count(&s->gb)&0x7);
}
buf[255]=0;
e=sscanf(buf, "DivX%dBuild%d", &ver, &build);
+ if(e!=2)
+ e=sscanf(buf, "DivX%db%d", &ver, &build);
if(e==2){
s->divx_version= ver;
s->divx_build= build;
if(s->picture_number==0){
printf("This file was encoded with DivX%d Build%d\n", ver, build);
- if(ver==500 && build==413){ //most likely all version are indeed totally buggy but i dunno for sure ...
+ if(ver==500 && build==413){
printf("WARNING: this version of DivX is not MPEG4 compatible, trying to workaround these bugs...\n");
- }else{
- printf("hmm, i havnt seen that version of divx yet, lets assume they fixed these bugs ...\n"
- "using mpeg4 decoder, if it fails contact the developers (of ffmpeg)\n");
}
}
}
goto redo;
}
- s->pict_type = get_bits(&s->gb, 2) + 1; /* pict type: I = 0 , P = 1 */
-//printf("pic: %d\n", s->pict_type);
+ s->pict_type = get_bits(&s->gb, 2) + I_TYPE; /* pict type: I = 0 , P = 1 */
+//if(s->pict_type!=I_TYPE) return FRAME_SKIPED;
+ if(s->pict_type==B_TYPE && s->low_delay && s->vol_control_parameters==0){
+ printf("low_delay flag set, but shouldnt, clearing it\n");
+ s->low_delay=0;
+ }
+// printf("pic: %d, qpel:%d part:%d resync:%d\n", s->pict_type, s->quarter_sample, s->data_partitioning, s->resync_marker);
+
+ if(s->time_increment_resolution==0){
+ s->time_increment_resolution=1;
+// fprintf(stderr, "time_increment_resolution is illegal\n");
+ }
time_incr=0;
while (get_bits1(&s->gb) != 0)
time_incr++;
check_marker(&s->gb, "before time_increment");
- s->time_increment= get_bits(&s->gb, s->time_increment_bits);
+ time_increment= get_bits(&s->gb, s->time_increment_bits);
+//printf(" type:%d modulo_time_base:%d increment:%d\n", s->pict_type, time_incr, time_increment);
if(s->pict_type!=B_TYPE){
+ s->last_time_base= s->time_base;
s->time_base+= time_incr;
- s->last_non_b_time[1]= s->last_non_b_time[0];
- s->last_non_b_time[0]= s->time_base*s->time_increment_resolution + s->time_increment;
+ s->time= s->time_base*s->time_increment_resolution + time_increment;
+ if(s->time < s->last_non_b_time && s->workaround_bugs==3){
+ fprintf(stderr, "header is not mpeg4 compatible, broken encoder, trying to workaround\n");
+ s->time_base++;
+ s->time+= s->time_increment_resolution;
+ }
+ s->pp_time= s->time - s->last_non_b_time;
+ s->last_non_b_time= s->time;
}else{
- s->time= (s->last_non_b_time[1]/s->time_increment_resolution + time_incr)*s->time_increment_resolution;
- s->time+= s->time_increment;
+ s->time= (s->last_time_base + time_incr)*s->time_increment_resolution + time_increment;
+ s->pb_time= s->pp_time - (s->last_non_b_time - s->time);
+ if(s->pp_time <=s->pb_time || s->pp_time <= s->pp_time - s->pb_time || s->pp_time<=0){
+// printf("messed up order, seeking?, skiping current b frame\n");
+ return FRAME_SKIPED;
+ }
+
+ if(s->t_frame==0) s->t_frame= s->time - s->last_time_base;
+ if(s->t_frame==0) s->t_frame=1; // 1/0 protection
+//printf("%Ld %Ld %d %d\n", s->last_non_b_time, s->time, s->pp_time, s->t_frame); fflush(stdout);
+ s->pp_field_time= ( ROUNDED_DIV(s->last_non_b_time, s->t_frame)
+ - ROUNDED_DIV(s->last_non_b_time - s->pp_time, s->t_frame))*2;
+ s->pb_field_time= ( ROUNDED_DIV(s->time, s->t_frame)
+ - ROUNDED_DIV(s->last_non_b_time - s->pp_time, s->t_frame))*2;
}
-
+
+ s->avctx->pts= s->time*1000LL*1000LL / s->time_increment_resolution;
+
if(check_marker(&s->gb, "before vop_coded")==0 && s->picture_number==0){
printf("hmm, seems the headers arnt complete, trying to guess time_increment_bits\n");
for(s->time_increment_bits++ ;s->time_increment_bits<16; s->time_increment_bits++){
/* vop coded */
if (get_bits1(&s->gb) != 1)
goto redo;
-//printf("time %d %d %d || %d %d %d\n", s->time_increment_bits, s->time_increment, s->time_base,
-//s->time, s->last_non_b_time[0], s->last_non_b_time[1]);
+//printf("time %d %d %d || %Ld %Ld %Ld\n", s->time_increment_bits, s->time_increment_resolution, s->time_base,
+//s->time, s->last_non_b_time, s->last_non_b_time - s->pp_time);
if (s->shape != BIN_ONLY_SHAPE && ( s->pict_type == P_TYPE
|| (s->pict_type == S_TYPE && s->vol_sprite_usage==GMC_SPRITE))) {
/* rounding type for motion estimation */
//FIXME complexity estimation stuff
if (s->shape != BIN_ONLY_SHAPE) {
- skip_bits(&s->gb, 3); /* intra dc VLC threshold */
- //FIXME interlaced specific bits
+ int t;
+ t=get_bits(&s->gb, 3); /* intra dc VLC threshold */
+//printf("threshold %d\n", t);
+ if(!s->progressive_sequence){
+ s->top_field_first= get_bits1(&s->gb);
+ s->alternate_scan= get_bits1(&s->gb);
+ }else
+ s->alternate_scan= 0;
}
if(s->pict_type == S_TYPE && (s->vol_sprite_usage==STATIC_SPRITE || s->vol_sprite_usage==GMC_SPRITE)){
printf("Error, header damaged or not MPEG4 header (f_code=0)\n");
return -1; // makes no sense to continue, as the MV decoding will break very quickly
}
- }
+ }else
+ s->f_code=1;
+
if (s->pict_type == B_TYPE) {
s->b_code = get_bits(&s->gb, 3);
-//printf("b-code %d\n", s->b_code);
- }
-//printf("quant:%d fcode:%d\n", s->qscale, s->f_code);
-
+ }else
+ s->b_code=1;
+#if 0
+printf("qp:%d fc:%d bc:%d type:%s size:%d pro:%d alt:%d top:%d qpel:%d part:%d resync:%d\n",
+ s->qscale, s->f_code, s->b_code,
+ s->pict_type == I_TYPE ? "I" : (s->pict_type == P_TYPE ? "P" : (s->pict_type == B_TYPE ? "B" : "S")),
+ s->gb.size,s->progressive_sequence, s->alternate_scan, s->top_field_first,
+ s->quarter_sample, s->data_partitioning, s->resync_marker);
+#endif
if(!s->scalability){
if (s->shape!=RECT_SHAPE && s->pict_type!=I_TYPE) {
skip_bits1(&s->gb); // vop shape coding type
}
+ }else{
+ if(s->enhancement_type){
+ int load_backward_shape= get_bits1(&s->gb);
+ if(load_backward_shape){
+ printf("load backward shape isnt supported\n");
+ }
+ }
+ skip_bits(&s->gb, 2); //ref_select_code
}
}
+ /* detect buggy encoders which dont set the low_delay flag (divx4/xvid/opendivx)*/
+ // note we cannot detect divx5 without b-frames easyly (allthough its buggy too)
+ if(s->vo_type==0 && s->vol_control_parameters==0 && s->divx_version==0 && s->picture_number==0){
+ printf("looks like this file was encoded with (divx4/(old)xvid/opendivx) -> forcing low_delay flag\n");
+ s->low_delay=1;
+ }
+
s->picture_number++; // better than pic number==0 allways ;)
+
+ s->y_dc_scale_table= ff_mpeg4_y_dc_scale_table; //FIXME add short header support
+ s->c_dc_scale_table= ff_mpeg4_c_dc_scale_table;
+
+ if(s->divx_version==0 || s->divx_version < 500){
+ s->h_edge_pos= s->width;
+ s->v_edge_pos= s->height;
+ }
return 0;
}
int format;
/* picture header */
- if (get_bits(&s->gb, 22) != 0x20)
+ if (get_bits(&s->gb, 22) != 0x20) {
+ fprintf(stderr, "Bad picture start code\n");
return -1;
- skip_bits(&s->gb, 8); /* picture timestamp */
+ }
+ s->picture_number = get_bits(&s->gb, 8); /* picture timestamp */
- if (get_bits1(&s->gb) != 1)
+ if (get_bits1(&s->gb) != 1) {
+ fprintf(stderr, "Bad marker\n");
return -1; /* marker */
- if (get_bits1(&s->gb) != 0)
+ }
+ if (get_bits1(&s->gb) != 0) {
+ fprintf(stderr, "Bad H263 id\n");
return -1; /* h263 id */
+ }
skip_bits1(&s->gb); /* split screen off */
skip_bits1(&s->gb); /* camera off */
skip_bits1(&s->gb); /* freeze picture release off */
format = get_bits(&s->gb, 3);
- if (format != 7)
+ if (format != 7) {
+ fprintf(stderr, "Intel H263 free format not supported\n");
return -1;
-
+ }
s->h263_plus = 0;
s->pict_type = I_TYPE + get_bits1(&s->gb);
s->unrestricted_mv = get_bits1(&s->gb);
s->h263_long_vectors = s->unrestricted_mv;
- if (get_bits1(&s->gb) != 0)
+ if (get_bits1(&s->gb) != 0) {
+ fprintf(stderr, "SAC not supported\n");
return -1; /* SAC: off */
- if (get_bits1(&s->gb) != 0)
+ }
+ if (get_bits1(&s->gb) != 0) {
+ fprintf(stderr, "Advanced Prediction Mode not supported\n");
return -1; /* advanced prediction mode: off */
- if (get_bits1(&s->gb) != 0)
- return -1; /* not PB frame */
+ }
+ if (get_bits1(&s->gb) != 0) {
+ fprintf(stderr, "PB frame mode no supported\n");
+ return -1; /* PB frame mode */
+ }
/* skip unknown header garbage */
skip_bits(&s->gb, 41);
projects / ffmpeg / blobdiff