mirror of https://git.ffmpeg.org/ffmpeg.git
new motion estimation (epzs) not complete yet but allready pretty good :)
unlimited mv search range minor bugfix in the mpeg4 header parser reset picture in gop counter if scene change is detected Originally committed as revision 344 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
parent
daa5764137
commit
45870f5718
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@ -57,6 +57,8 @@ extern int motion_estimation_method;
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#define ME_FULL 1
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#define ME_LOG 2
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#define ME_PHODS 3
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#define ME_EPZS 4
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#define ME_X1 5
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/* encoding support */
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@ -128,6 +128,7 @@ void init_get_bits(GetBitContext *s,
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s->bit_cnt += 8;
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}
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#endif
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s->size= buffer_size;
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}
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#ifndef ALT_BITSTREAM_READER
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@ -197,6 +197,7 @@ typedef struct GetBitContext {
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int bit_cnt;
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UINT8 *buf, *buf_ptr, *buf_end;
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#endif
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int size;
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} GetBitContext;
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typedef struct VLC {
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@ -787,6 +788,24 @@ static inline int av_log2(unsigned int v)
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return n;
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}
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/* median of 3 */
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static inline int mid_pred(int a, int b, int c)
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{
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int vmin, vmax;
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vmax = vmin = a;
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if (b < vmin)
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vmin = b;
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else
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vmax = b;
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if (c < vmin)
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vmin = c;
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else if (c > vmax)
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vmax = c;
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return a + b + c - vmin - vmax;
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}
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/* memory */
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void *av_mallocz(int size);
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@ -17,6 +17,8 @@
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* ac prediction encoding by Michael Niedermayer <michaelni@gmx.at>
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*/
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#include "common.h"
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#include "dsputil.h"
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@ -45,9 +47,11 @@ static int mpeg4_decode_block(MpegEncContext * s, DCTELEM * block,
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static inline int mpeg4_pred_dc(MpegEncContext * s, int n, UINT16 **dc_val_ptr, int *dir_ptr);
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static void mpeg4_inv_pred_ac(MpegEncContext * s, INT16 *block, int n,
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int dir);
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extern UINT32 inverse[256];
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static UINT16 mv_penalty[MAX_FCODE][MAX_MV*2+1];
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static UINT8 fcode_tab[MAX_MV*2+1];
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int h263_get_picture_format(int width, int height)
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{
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int format;
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@ -524,24 +528,6 @@ void h263_pred_acdc(MpegEncContext * s, INT16 *block, int n)
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ac_val1[8 + i] = block[block_permute_op(i)];
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}
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static inline int mid_pred(int a, int b, int c)
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{
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int vmin, vmax;
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vmax = vmin = a;
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if (b < vmin)
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vmin = b;
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else
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vmax = b;
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if (c < vmin)
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vmin = c;
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else if (c > vmax)
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vmax = c;
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return a + b + c - vmin - vmax;
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}
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INT16 *h263_pred_motion(MpegEncContext * s, int block,
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int *px, int *py)
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{
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@ -648,7 +634,46 @@ static void h263p_encode_umotion(MpegEncContext * s, int val)
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}
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}
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void h263_encode_init_vlc(MpegEncContext *s)
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static void init_mv_penalty_and_fcode(MpegEncContext *s)
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{
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int f_code;
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int mv;
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for(f_code=1; f_code<=MAX_FCODE; f_code++){
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for(mv=-MAX_MV; mv<=MAX_MV; mv++){
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int len;
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if(mv==0) len= mvtab[0][1];
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else{
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int val, bit_size, range, code;
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bit_size = s->f_code - 1;
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range = 1 << bit_size;
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val=mv;
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if (val < 0)
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val = -val;
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val--;
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code = (val >> bit_size) + 1;
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if(code<33){
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len= mvtab[code][1] + 1 + bit_size;
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}else{
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len= mvtab[32][1] + 2 + bit_size;
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}
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}
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mv_penalty[f_code][mv+MAX_MV]= len;
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}
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}
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for(f_code=MAX_FCODE; f_code>0; f_code--){
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for(mv=-(16<<f_code); mv<(16<<f_code); mv++){
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fcode_tab[mv+MAX_MV]= f_code;
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}
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}
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}
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void h263_encode_init(MpegEncContext *s)
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{
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static int done = 0;
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@ -656,7 +681,13 @@ void h263_encode_init_vlc(MpegEncContext *s)
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done = 1;
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init_rl(&rl_inter);
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init_rl(&rl_intra);
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init_mv_penalty_and_fcode(s);
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}
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s->mv_penalty= mv_penalty;
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// use fcodes >1 only for mpeg4 FIXME
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if(!s->h263_msmpeg4 && s->h263_pred) s->fcode_tab= fcode_tab;
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}
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static void h263_encode_block(MpegEncContext * s, DCTELEM * block, int n)
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@ -2094,9 +2125,8 @@ int mpeg4_decode_picture_header(MpegEncContext * s)
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break;
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}
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state = ((state << 8) | v) & 0xffffff;
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/* XXX: really detect end of frame */
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if (state == 0){
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printf("illegal zero code found\n");
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if( get_bits_count(&s->gb) > s->gb.size*8){
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printf("no VOP startcode found\n");
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return -1;
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}
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}
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@ -2152,6 +2182,7 @@ int mpeg4_decode_picture_header(MpegEncContext * s)
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if(width && height){ /* they should be non zero but who knows ... */
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s->width = width;
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s->height = height;
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// printf("%d %d\n", width, height);
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}
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}
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@ -16,6 +16,8 @@
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* new Motion Estimation (X1/EPZS) by Michael Niedermayer <michaelni@gmx.at>
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*/
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#include <stdlib.h>
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#include <stdio.h>
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@ -25,7 +27,8 @@
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static void halfpel_motion_search(MpegEncContext * s,
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int *mx_ptr, int *my_ptr, int dmin,
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int xmin, int ymin, int xmax, int ymax);
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int xmin, int ymin, int xmax, int ymax,
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int pred_x, int pred_y);
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/* config it to test motion vector encoding (send random vectors) */
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//#define CONFIG_TEST_MV_ENCODE
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@ -328,67 +331,209 @@ static int phods_motion_search(MpegEncContext * s,
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return dminy;
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}
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#define Z_THRESHOLD 256
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#define CHECK_MV(x,y)\
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d = pix_abs16x16(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride, 16);\
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d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;\
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if(d<dmin){\
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best[0]=x;\
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best[1]=y;\
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dmin=d;\
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}
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#define CHECK_MV_DIR(x,y,new_dir)\
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{\
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d = pix_abs16x16(new_pic, old_pic + (x) + (y)*pic_stride, pic_stride, 16);\
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d += (mv_penalty[((x)<<shift)-pred_x] + mv_penalty[((y)<<shift)-pred_y])*quant;\
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if(d<dmin){\
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best[0]=x;\
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best[1]=y;\
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dmin=d;\
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next_dir= new_dir;\
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}\
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}
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static inline int small_diamond_search(MpegEncContext * s, int *best, int dmin,
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UINT8 *new_pic, UINT8 *old_pic, int pic_stride,
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int pred_x, int pred_y, UINT16 *mv_penalty, int quant,
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int xmin, int ymin, int xmax, int ymax, int shift)
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{
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int next_dir=-1;
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for(;;){
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int d;
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const int dir= next_dir;
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const int x= best[0];
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const int y= best[1];
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next_dir=-1;
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//printf("%d", dir);
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if(dir!=2 && x-1>=xmin) CHECK_MV_DIR(x-1, y , 0)
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if(dir!=3 && y-1>=ymin) CHECK_MV_DIR(x , y-1, 1)
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if(dir!=0 && x+1<=xmax) CHECK_MV_DIR(x+1, y , 2)
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if(dir!=1 && y+1<=ymax) CHECK_MV_DIR(x , y+1, 3)
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if(next_dir==-1){
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return dmin;
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}
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}
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}
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static int epzs_motion_search(MpegEncContext * s,
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int *mx_ptr, int *my_ptr,
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int *px_ptr, int *py_ptr,
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int xmin, int ymin, int xmax, int ymax)
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{
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INT16 P_left[2], P_top[2], P_topright[2], P_last[2];
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static const int off[4]= {2, 1, 1, -1};
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int best[2]={0, 0};
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int d, dmin;
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UINT8 *new_pic, *old_pic;
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const int pic_stride= s->linesize;
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const int pic_xy= (s->mb_y*pic_stride + s->mb_x)*16;
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const int mot_stride = s->block_wrap[0];
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const int mot_xy = s->block_index[0];
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UINT16 *mv_penalty= s->mv_penalty[s->f_code] + MAX_MV; // f_code of the prev frame
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int quant= s->qscale; // qscale of the prev frame
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int pred_x, pred_y;
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const int shift= 1+s->quarter_sample;
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new_pic = s->new_picture[0] + pic_xy;
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old_pic = s->last_picture[0] + pic_xy;
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xmin-=s->mb_x*16;
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xmax-=s->mb_x*16;
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ymin-=s->mb_y*16;
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ymax-=s->mb_y*16;
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dmin = pix_abs16x16(new_pic, old_pic, pic_stride, 16);
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if(dmin<Z_THRESHOLD){
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*mx_ptr= 0;
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*my_ptr= 0;
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//printf("Z");
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return dmin;
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}
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P_last[0] = s->motion_val[mot_xy ][0];
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P_last[1] = s->motion_val[mot_xy ][1];
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P_left[0] = s->motion_val[mot_xy - 1][0];
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P_left[1] = s->motion_val[mot_xy - 1][1];
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if(P_left[0] > (xmax<<shift)) P_left[0]= (xmax<<shift);
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/* special case for first line */
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if ((s->mb_y == 0 || s->first_slice_line || s->first_gob_line)) {
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*px_ptr= pred_x = P_left[0];
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*py_ptr= pred_y = P_left[1];
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CHECK_MV(pred_x>>shift, pred_y>>shift)
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if(dmin<Z_THRESHOLD){
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*mx_ptr= pred_x>>shift;
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*my_ptr= pred_y>>shift;
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//printf("M");
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return dmin;
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}
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} else {
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P_top [0] = s->motion_val[mot_xy - mot_stride ][0];
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P_top [1] = s->motion_val[mot_xy - mot_stride ][1];
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P_topright[0] = s->motion_val[mot_xy - mot_stride + off[0] ][0];
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P_topright[1] = s->motion_val[mot_xy - mot_stride + off[0] ][1];
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if(P_top [1] > (ymax<<shift)) P_top [1]= (ymax<<shift);
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if(P_topright[0] < (xmin<<shift)) P_topright[0]= (xmin<<shift);
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if(P_topright[1] > (ymax<<shift)) P_topright[1]= (ymax<<shift);
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*px_ptr= pred_x = mid_pred(P_left[0], P_top[0], P_topright[0]);
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*py_ptr= pred_y = mid_pred(P_left[1], P_top[1], P_topright[1]);
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CHECK_MV(pred_x>>shift, pred_y>>shift)
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if(dmin<Z_THRESHOLD){
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*mx_ptr= pred_x>>shift;
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*my_ptr= pred_y>>shift;
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//printf("M");
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return dmin;
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}
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CHECK_MV(P_left [0]>>shift, P_left [1]>>shift)
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CHECK_MV(P_top [0]>>shift, P_top [1]>>shift)
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CHECK_MV(P_topright[0]>>shift, P_topright[1]>>shift)
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CHECK_MV(P_last [0]>>shift, P_last [1]>>shift)
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}
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dmin= small_diamond_search(s, best, dmin, new_pic, old_pic, pic_stride,
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pred_x, pred_y, mv_penalty, quant, xmin, ymin, xmax, ymax, shift);
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*mx_ptr= best[0];
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*my_ptr= best[1];
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// printf("%d %d %d \n", best[0], best[1], dmin);
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return dmin;
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}
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#define CHECK_HALF_MV(suffix, x, y) \
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d= pix_abs16x16_ ## suffix(pix, ptr+((x)>>1), s->linesize, 16);\
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d += (mv_penalty[pen_x + x] + mv_penalty[pen_y + y])*quant;\
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if(d<dminh){\
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dminh= d;\
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mx= mx1 + x;\
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my= my1 + y;\
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}
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/* The idea would be to make half pel ME after Inter/Intra decision to
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save time. */
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static void halfpel_motion_search(MpegEncContext * s,
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static inline void halfpel_motion_search(MpegEncContext * s,
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int *mx_ptr, int *my_ptr, int dmin,
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int xmin, int ymin, int xmax, int ymax)
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int xmin, int ymin, int xmax, int ymax,
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int pred_x, int pred_y)
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{
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UINT16 *mv_penalty= s->mv_penalty[s->f_code] + MAX_MV; // f_code of the prev frame
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const int quant= s->qscale;
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int pen_x, pen_y;
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int mx, my, mx1, my1, d, xx, yy, dminh;
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UINT8 *pix;
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UINT8 *pix, *ptr;
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mx = *mx_ptr << 1;
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my = *my_ptr << 1;
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mx = *mx_ptr;
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my = *my_ptr;
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ptr = s->last_picture[0] + (my * s->linesize) + mx;
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xx = 16 * s->mb_x;
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yy = 16 * s->mb_y;
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pix = s->new_picture[0] + (yy * s->linesize) + xx;
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dminh = dmin;
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/* Half pixel search */
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mx1 = mx;
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my1 = my;
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if (mx > xmin && mx < xmax &&
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my > ymin && my < ymax) {
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pix = s->new_picture[0] + (yy * s->linesize) + xx;
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if ((mx > (xmin << 1)) && mx < (xmax << 1) &&
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(my > (ymin << 1)) && my < (ymax << 1)) {
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int dx, dy, px, py;
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UINT8 *ptr;
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for (dy = -1; dy <= 1; dy++) {
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for (dx = -1; dx <= 1; dx++) {
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if (dx != 0 || dy != 0) {
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px = mx1 + dx;
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py = my1 + dy;
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ptr = s->last_picture[0] + ((py >> 1) * s->linesize) + (px >> 1);
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switch (((py & 1) << 1) | (px & 1)) {
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default:
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case 0:
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d = pix_abs16x16(pix, ptr, s->linesize, 16);
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break;
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case 1:
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d = pix_abs16x16_x2(pix, ptr, s->linesize, 16);
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break;
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case 2:
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d = pix_abs16x16_y2(pix, ptr, s->linesize, 16);
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break;
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case 3:
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d = pix_abs16x16_xy2(pix, ptr, s->linesize, 16);
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break;
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}
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if (d < dminh) {
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dminh = d;
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mx = px;
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my = py;
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}
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}
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}
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mx= mx1= 2*(mx - xx);
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my= my1= 2*(my - yy);
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if(dmin < Z_THRESHOLD && mx==0 && my==0){
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*mx_ptr = 0;
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*my_ptr = 0;
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return;
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}
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pen_x= pred_x + mx;
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pen_y= pred_y + my;
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ptr-= s->linesize;
|
||||
CHECK_HALF_MV(xy2, -1, -1)
|
||||
CHECK_HALF_MV(y2 , 0, -1)
|
||||
CHECK_HALF_MV(xy2, +1, -1)
|
||||
|
||||
ptr+= s->linesize;
|
||||
CHECK_HALF_MV(x2 , -1, 0)
|
||||
CHECK_HALF_MV(x2 , +1, 0)
|
||||
CHECK_HALF_MV(xy2, -1, +1)
|
||||
CHECK_HALF_MV(y2 , 0, +1)
|
||||
CHECK_HALF_MV(xy2, +1, +1)
|
||||
}else{
|
||||
mx= 2*(mx - xx);
|
||||
my= 2*(my - yy);
|
||||
}
|
||||
|
||||
*mx_ptr = mx - (xx << 1);
|
||||
*my_ptr = my - (yy << 1);
|
||||
//fprintf(stderr,"half - MX: %d\tMY: %d\n",*mx_ptr ,*my_ptr);
|
||||
*mx_ptr = mx;
|
||||
*my_ptr = my;
|
||||
}
|
||||
|
||||
#ifndef CONFIG_TEST_MV_ENCODE
|
||||
|
|
@ -400,6 +545,7 @@ int estimate_motion(MpegEncContext * s,
|
|||
UINT8 *pix, *ppix;
|
||||
int sum, varc, vard, mx, my, range, dmin, xx, yy;
|
||||
int xmin, ymin, xmax, ymax;
|
||||
int pred_x=0, pred_y=0;
|
||||
|
||||
range = 8 * (1 << (s->f_code - 1));
|
||||
/* XXX: temporary kludge to avoid overflow for msmpeg4 */
|
||||
|
|
@ -426,7 +572,6 @@ int estimate_motion(MpegEncContext * s,
|
|||
xmax = s->mb_width*16 - 16;
|
||||
ymax = s->mb_height*16 - 16;
|
||||
}
|
||||
|
||||
switch(s->full_search) {
|
||||
case ME_ZERO:
|
||||
default:
|
||||
|
|
@ -442,8 +587,13 @@ int estimate_motion(MpegEncContext * s,
|
|||
case ME_PHODS:
|
||||
dmin = phods_motion_search(s, &mx, &my, range / 2, xmin, ymin, xmax, ymax);
|
||||
break;
|
||||
case ME_X1: // just reserving some space for experiments ...
|
||||
case ME_EPZS:
|
||||
dmin = epzs_motion_search(s, &mx, &my, &pred_x, &pred_y, xmin, ymin, xmax, ymax);
|
||||
mx+= s->mb_x*16;
|
||||
my+= s->mb_y*16;
|
||||
break;
|
||||
}
|
||||
emms_c();
|
||||
|
||||
/* intra / predictive decision */
|
||||
xx = mb_x * 16;
|
||||
|
|
@ -470,7 +620,7 @@ int estimate_motion(MpegEncContext * s,
|
|||
#endif
|
||||
if (vard <= 64 || vard < varc) {
|
||||
if (s->full_search != ME_ZERO) {
|
||||
halfpel_motion_search(s, &mx, &my, dmin, xmin, ymin, xmax, ymax);
|
||||
halfpel_motion_search(s, &mx, &my, dmin, xmin, ymin, xmax, ymax, pred_x, pred_y);
|
||||
} else {
|
||||
mx -= 16 * s->mb_x;
|
||||
my -= 16 * s->mb_y;
|
||||
|
|
|
|||
|
|
@ -66,7 +66,7 @@ static void mpeg1_encode_sequence_header(MpegEncContext *s)
|
|||
int n;
|
||||
UINT64 time_code;
|
||||
|
||||
if ((s->picture_number % s->gop_size) == 0) {
|
||||
if (s->picture_in_gop_number == 0) {
|
||||
/* mpeg1 header repeated every gop */
|
||||
put_header(s, SEQ_START_CODE);
|
||||
|
||||
|
|
|
|||
|
|
@ -67,6 +67,9 @@ static UINT8 h263_chroma_roundtab[16] = {
|
|||
0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2,
|
||||
};
|
||||
|
||||
static UINT16 default_mv_penalty[MAX_FCODE][MAX_MV*2+1];
|
||||
static UINT8 default_fcode_tab[MAX_MV*2+1];
|
||||
|
||||
/* default motion estimation */
|
||||
int motion_estimation_method = ME_LOG;
|
||||
|
||||
|
|
@ -356,8 +359,24 @@ int MPV_encode_init(AVCodecContext *avctx)
|
|||
return -1;
|
||||
}
|
||||
|
||||
{ /* set up some save defaults, some codecs might override them later */
|
||||
static int done=0;
|
||||
if(!done){
|
||||
int i;
|
||||
done=1;
|
||||
memset(default_mv_penalty, 0, sizeof(UINT16)*MAX_FCODE*(2*MAX_MV+1));
|
||||
memset(default_fcode_tab , 0, sizeof(UINT8)*(2*MAX_MV+1));
|
||||
|
||||
for(i=-16; i<16; i++){
|
||||
default_fcode_tab[i + MAX_MV]= 1;
|
||||
}
|
||||
}
|
||||
}
|
||||
s->mv_penalty= default_mv_penalty;
|
||||
s->fcode_tab= default_fcode_tab;
|
||||
|
||||
if (s->out_format == FMT_H263)
|
||||
h263_encode_init_vlc(s);
|
||||
h263_encode_init(s);
|
||||
|
||||
s->encoding = 1;
|
||||
|
||||
|
|
@ -375,6 +394,7 @@ int MPV_encode_init(AVCodecContext *avctx)
|
|||
rate_control_init(s);
|
||||
|
||||
s->picture_number = 0;
|
||||
s->picture_in_gop_number = 0;
|
||||
s->fake_picture_number = 0;
|
||||
/* motion detector init */
|
||||
s->f_code = 1;
|
||||
|
|
@ -480,9 +500,10 @@ int MPV_encode_picture(AVCodecContext *avctx,
|
|||
|
||||
if (!s->intra_only) {
|
||||
/* first picture of GOP is intra */
|
||||
if ((s->picture_number % s->gop_size) == 0)
|
||||
if (s->picture_in_gop_number >= s->gop_size){
|
||||
s->picture_in_gop_number=0;
|
||||
s->pict_type = I_TYPE;
|
||||
else
|
||||
}else
|
||||
s->pict_type = P_TYPE;
|
||||
} else {
|
||||
s->pict_type = I_TYPE;
|
||||
|
|
@ -521,6 +542,7 @@ int MPV_encode_picture(AVCodecContext *avctx,
|
|||
|
||||
MPV_frame_end(s);
|
||||
s->picture_number++;
|
||||
s->picture_in_gop_number++;
|
||||
|
||||
if (s->out_format == FMT_MJPEG)
|
||||
mjpeg_picture_trailer(s);
|
||||
|
|
@ -1077,17 +1099,66 @@ static void encode_picture(MpegEncContext *s, int picture_number)
|
|||
s->mv_table[1][xy] = motion_y;
|
||||
}
|
||||
}
|
||||
emms_c();
|
||||
|
||||
if(s->avg_mb_var < s->mc_mb_var && s->pict_type != B_TYPE){ //FIXME subtract MV bits
|
||||
int i;
|
||||
s->pict_type= I_TYPE;
|
||||
for(i=0; i<s->mb_height*s->mb_width; i++){
|
||||
s->mb_type[i] = I_TYPE;
|
||||
s->picture_in_gop_number=0;
|
||||
for(i=0; i<s->mb_num; i++){
|
||||
s->mb_type[i] = 1;
|
||||
s->mv_table[0][i] = 0;
|
||||
s->mv_table[1][i] = 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* find best f_code */
|
||||
if(s->pict_type==P_TYPE){
|
||||
int mv_num[8];
|
||||
int i;
|
||||
int loose=0;
|
||||
UINT8 * fcode_tab= s->fcode_tab;
|
||||
|
||||
for(i=0; i<8; i++) mv_num[i]=0;
|
||||
|
||||
for(i=0; i<s->mb_num; i++){
|
||||
if(s->mb_type[i] == 0){
|
||||
mv_num[ fcode_tab[s->mv_table[0][i] + MAX_MV] ]++;
|
||||
mv_num[ fcode_tab[s->mv_table[1][i] + MAX_MV] ]++;
|
||||
//printf("%d %d %d\n", s->mv_table[0][i], fcode_tab[s->mv_table[0][i] + MAX_MV], i);
|
||||
}
|
||||
//else printf("I");
|
||||
}
|
||||
|
||||
for(i=MAX_FCODE; i>1; i--){
|
||||
loose+= mv_num[i];
|
||||
if(loose > 4) break;
|
||||
}
|
||||
s->f_code= i;
|
||||
}else{
|
||||
s->f_code= 1;
|
||||
}
|
||||
//printf("f_code %d ///\n", s->f_code);
|
||||
/* convert MBs with too long MVs to I-Blocks */
|
||||
if(s->pict_type==P_TYPE){
|
||||
int i;
|
||||
const int f_code= s->f_code;
|
||||
UINT8 * fcode_tab= s->fcode_tab;
|
||||
|
||||
for(i=0; i<s->mb_num; i++){
|
||||
if(s->mb_type[i] == 0){
|
||||
if( fcode_tab[s->mv_table[0][i] + MAX_MV] > f_code
|
||||
|| fcode_tab[s->mv_table[0][i] + MAX_MV] == 0
|
||||
|| fcode_tab[s->mv_table[1][i] + MAX_MV] > f_code
|
||||
|| fcode_tab[s->mv_table[1][i] + MAX_MV] == 0 ){
|
||||
s->mb_type[i] = 1;
|
||||
s->mv_table[0][i] = 0;
|
||||
s->mv_table[1][i] = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// printf("%d %d\n", s->avg_mb_var, s->mc_mb_var);
|
||||
|
||||
if (!s->fixed_qscale)
|
||||
|
|
|
|||
|
|
@ -34,6 +34,9 @@ enum OutputFormat {
|
|||
#define QMAT_SHIFT_MMX 19
|
||||
#define QMAT_SHIFT 25
|
||||
|
||||
#define MAX_FCODE 7
|
||||
#define MAX_MV 2048
|
||||
|
||||
typedef struct Predictor{
|
||||
double coeff;
|
||||
double count;
|
||||
|
|
@ -71,7 +74,8 @@ typedef struct MpegEncContext {
|
|||
int context_initialized;
|
||||
int picture_number;
|
||||
int fake_picture_number; /* picture number at the bitstream frame rate */
|
||||
int gop_picture_number; /* index of the first picture of a GOP */
|
||||
int gop_picture_number; /* index of the first picture of a GOP based on fake_pic_num & mpeg1 specific */
|
||||
int picture_in_gop_number; /* 0-> first pic in gop, ... */
|
||||
int mb_width, mb_height;
|
||||
int mb_num; /* number of MBs of a picture */
|
||||
int linesize; /* line size, in bytes, may be different from width */
|
||||
|
|
@ -114,7 +118,7 @@ typedef struct MpegEncContext {
|
|||
#define MV_DIRECT 4 // bidirectional mode where the difference equals the MV of the last P/S/I-Frame (mpeg4)
|
||||
int mv_type;
|
||||
#define MV_TYPE_16X16 0 /* 1 vector for the whole mb */
|
||||
#define MV_TYPE_8X8 1 /* 4 vectors (h263) */
|
||||
#define MV_TYPE_8X8 1 /* 4 vectors (h263, mpeg4 4MV) */
|
||||
#define MV_TYPE_16X8 2 /* 2 vectors, one per 16x8 block */
|
||||
#define MV_TYPE_FIELD 3 /* 2 vectors, one per field */
|
||||
#define MV_TYPE_DMV 4 /* 2 vectors, special mpeg2 Dual Prime Vectors */
|
||||
|
|
@ -126,6 +130,8 @@ typedef struct MpegEncContext {
|
|||
int mv[2][4][2];
|
||||
int field_select[2][2];
|
||||
int last_mv[2][2][2];
|
||||
UINT16 (*mv_penalty)[MAX_MV*2+1]; /* amount of bits needed to encode a MV, used for ME */
|
||||
UINT8 *fcode_tab; /* smallest fcode needed for each MV */
|
||||
|
||||
int has_b_frames;
|
||||
int no_rounding; /* apply no rounding to motion estimation (MPEG4) */
|
||||
|
|
@ -350,7 +356,7 @@ INT16 *h263_pred_motion(MpegEncContext * s, int block,
|
|||
void mpeg4_pred_ac(MpegEncContext * s, INT16 *block, int n,
|
||||
int dir);
|
||||
void mpeg4_encode_picture_header(MpegEncContext *s, int picture_number);
|
||||
void h263_encode_init_vlc(MpegEncContext *s);
|
||||
void h263_encode_init(MpegEncContext *s);
|
||||
|
||||
void h263_decode_init_vlc(MpegEncContext *s);
|
||||
int h263_decode_picture_header(MpegEncContext *s);
|
||||
|
|
|
|||
Loading…
Reference in New Issue