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Code Issues Releases Activity

move ABS() to common.h

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print mb_types in nice looking format support

Originally committed as revision 440 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2002-05-04 18:58:07 +00:00
parent 4085d977dd
commit 32cd20de42
2 changed files with 20 additions and 13 deletions
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1
libavcodec/common.h
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@ -159,6 +159,7 @@ inline void dprintf(const char* fmt,...) {}
/* assume b>0 */
#define ROUNDED_DIV(a,b) (((a)>0 ? (a) + ((b)>>1) : (a) - ((b)>>1))/(b))
#define ABS(a) ((a) >= 0 ? (a) : (-(a)))
/* bit output */

32
libavcodec/h263.c
View File

@ -30,12 +30,13 @@
#include "mpeg4data.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)))
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define PRINT_MB_TYPE(a) ;
//#define PRINT_MB_TYPE(a) printf(a);
static void h263_encode_block(MpegEncContext * s, DCTELEM * block,
int n);
static void h263_encode_motion(MpegEncContext * s, int val, int fcode);
@ -1765,6 +1766,8 @@ int h263_decode_mb(MpegEncContext *s,
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_x_pos == s->mb_x+1
|| s->resync_x_pos == s->mb_x){
@ -1797,7 +1800,7 @@ int h263_decode_mb(MpegEncContext *s,
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;
if(s->divx_version==500 && s->divx_build==413){
s->mv[0][0][0] = s->sprite_offset[0][0] / (1<<(a-s->quarter_sample));
@ -1813,6 +1816,7 @@ int h263_decode_mb(MpegEncContext *s,
s->mb_skiped = 0;
}else{
PRINT_MB_TYPE("S");
s->mcsel=0;
s->mv[0][0][0] = 0;
s->mv[0][0][1] = 0;
@ -1848,6 +1852,7 @@ int h263_decode_mb(MpegEncContext *s,
}
s->mv_dir = MV_DIR_FORWARD;
if ((cbpc & 16) == 0) {
PRINT_MB_TYPE("P");
/* 16x16 motion prediction */
s->mv_type = MV_TYPE_16X16;
h263_pred_motion(s, 0, &pred_x, &pred_y);
@ -1895,6 +1900,7 @@ int h263_decode_mb(MpegEncContext *s,
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);
@ -1935,7 +1941,6 @@ int h263_decode_mb(MpegEncContext *s,
s->last_mv[0][0][1]=
s->last_mv[1][0][0]=
s->last_mv[1][0][1]= 0;
// printf("\n");
}
/* if we skipped it in the future P Frame than skip it now too */
@ -1955,7 +1960,7 @@ int h263_decode_mb(MpegEncContext *s,
//FIXME is this correct?
/* s->last_mv[0][0][0]=
s->last_mv[0][0][1]=0;*/
// printf("S");
PRINT_MB_TYPE("s")
return 0;
}
@ -2004,7 +2009,7 @@ int h263_decode_mb(MpegEncContext *s,
s->mv[0][0][1] =
s->mv[1][0][0] =
s->mv[1][0][1] = 1000;*/
// printf("D");
PRINT_MB_TYPE("D");
break;
case 1:
s->mv_dir = MV_DIR_FORWARD | MV_DIR_BACKWARD;
@ -2017,7 +2022,7 @@ int h263_decode_mb(MpegEncContext *s,
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;
// printf("I");
PRINT_MB_TYPE("i");
break;
case 2:
s->mv_dir = MV_DIR_BACKWARD;
@ -2025,7 +2030,7 @@ int h263_decode_mb(MpegEncContext *s,
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;
// printf("B");
PRINT_MB_TYPE("B");
break;
case 3:
s->mv_dir = MV_DIR_FORWARD;
@ -2033,7 +2038,7 @@ int h263_decode_mb(MpegEncContext *s,
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;
// printf("F");
PRINT_MB_TYPE("F");
break;
default: return -1;
}
@ -2044,6 +2049,7 @@ int h263_decode_mb(MpegEncContext *s,
dquant = cbpc & 4;
s->mb_intra = 1;
intra:
PRINT_MB_TYPE("I");
s->ac_pred = 0;
if (s->h263_pred || s->h263_aic) {
s->ac_pred = get_bits1(&s->gb);
@ -2606,13 +2612,13 @@ static void mpeg4_decode_sprite_trajectory(MpegEncContext * s)
// 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)
{