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/* putseq.c, sequence level routines */
/* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */
/*
* Disclaimer of Warranty
*
* These software programs are available to the user without any license fee or
* royalty on an "as is" basis. The MPEG Software Simulation Group disclaims
* any and all warranties, whether express, implied, or statuary, including any
* implied warranties or merchantability or of fitness for a particular
* purpose. In no event shall the copyright-holder be liable for any
* incidental, punitive, or consequential damages of any kind whatsoever
* arising from the use of these programs.
*
* This disclaimer of warranty extends to the user of these programs and user's
* customers, employees, agents, transferees, successors, and assigns.
*
* The MPEG Software Simulation Group does not represent or warrant that the
* programs furnished hereunder are free of infringement of any third-party
* patents.
*
* Commercial implementations of MPEG-1 and MPEG-2 video, including shareware,
* are subject to royalty fees to patent holders. Many of these patents are
* general enough such that they are unavoidable regardless of implementation
* design.
*
*/
#include <stdio.h>
#include <string.h>
#include "mpeg2enc_config.h"
#include "mpeg2enc_global.h"
static void MPEG2_evaluate_frame_info(int cframe, int* f0, int* realframe, unsigned char* neworg[], unsigned char* newref[], int* sxf, int* syf, int* sxb, int* syb,struct MPEG2_structure *mpeg2_struct)
{
int j, n, np, nb;
/* f0: lowest frame number in current GOP
*
* first GOP contains N-(M-1) frames,
* all other GOPs contain N frames
*/
*f0 = mpeg2_struct->N_val*((cframe+(mpeg2_struct->M_val-1))/mpeg2_struct->N_val) - (mpeg2_struct->M_val-1);
if (*f0<0)
*f0=0;
if (cframe==0 || (cframe-1)%mpeg2_struct->M_val==0)
{
/* I or P frame */
for (j=0; j<3; j++)
{
/* shuffle reference frames */
neworg[j] = mpeg2_struct->oldorgframe[j];
newref[j] = mpeg2_struct->oldrefframe[j];
mpeg2_struct->oldorgframe[j] = mpeg2_struct->neworgframe[j];
mpeg2_struct->oldrefframe[j] = mpeg2_struct->newrefframe[j];
mpeg2_struct->neworgframe[j] = neworg[j];
mpeg2_struct->newrefframe[j] = newref[j];
}
/* f: frame number in display order */
*realframe = (cframe==0) ? 0 : cframe+mpeg2_struct->M_val-1;
if (*realframe>=mpeg2_struct->nframes)
*realframe = mpeg2_struct->nframes - 1;
if (cframe==*f0) /* first displayed frame in GOP is I */
{
/* I frame */
mpeg2_struct->pict_type = I_TYPE;
mpeg2_struct->forw_hor_f_code = mpeg2_struct->forw_vert_f_code = 15;
mpeg2_struct->back_hor_f_code = mpeg2_struct->back_vert_f_code = 15;
/* n: number of frames in current GOP
*
* first GOP contains (M-1) less (B) frames
*/
n = (cframe==0) ? mpeg2_struct->N_val-(mpeg2_struct->M_val-1) : mpeg2_struct->N_val;
/* last GOP may contain less frames */
if (n > mpeg2_struct->nframes-*f0)
n = mpeg2_struct->nframes-*f0;
/* number of P frames */
if (cframe==0)
np = (n + 2*(mpeg2_struct->M_val-1))/mpeg2_struct->M_val - 1; /* first GOP */
else
np = (n + (mpeg2_struct->M_val-1))/mpeg2_struct->M_val - 1;
/* number of B frames */
nb = n - np - 1;
MPEG2_rc_init_GOP(np,nb,mpeg2_struct);
MPEG2_putgophdr(*f0,cframe==0,mpeg2_struct); /* set closed_GOP in first GOP only */
}
else
{
/* P frame */
mpeg2_struct->pict_type = P_TYPE;
mpeg2_struct->forw_hor_f_code = mpeg2_struct->motion_data[0].forw_hor_f_code;
mpeg2_struct->forw_vert_f_code = mpeg2_struct->motion_data[0].forw_vert_f_code;
mpeg2_struct->back_hor_f_code = mpeg2_struct->back_vert_f_code = 15;
*sxf = mpeg2_struct->motion_data[0].sxf;
*syf = mpeg2_struct->motion_data[0].syf;
}
}
else
{
/* B frame */
for (j=0; j<3; j++)
{
neworg[j] = mpeg2_struct->auxorgframe[j];
newref[j] = mpeg2_struct->auxframe[j];
}
/* f: frame number in display order */
*realframe = cframe - 1;
mpeg2_struct->pict_type = B_TYPE;
n = (cframe-2)%mpeg2_struct->M_val + 1; /* first B: n=1, second B: n=2, ... */
mpeg2_struct->forw_hor_f_code = mpeg2_struct->motion_data[n].forw_hor_f_code;
mpeg2_struct->forw_vert_f_code = mpeg2_struct->motion_data[n].forw_vert_f_code;
mpeg2_struct->back_hor_f_code = mpeg2_struct->motion_data[n].back_hor_f_code;
mpeg2_struct->back_vert_f_code = mpeg2_struct->motion_data[n].back_vert_f_code;
*sxf = mpeg2_struct->motion_data[n].sxf;
*syf = mpeg2_struct->motion_data[n].syf;
*sxb = mpeg2_struct->motion_data[n].sxb;
*syb = mpeg2_struct->motion_data[n].syb;
}
}
VTK_MPEG2ENC_EXPORT int MPEG2_putseq_one(int cframe, int max,struct MPEG2_structure *mpeg2_struct)
{
int j, k, realframe, f0, sxf, syf, sxb, syb;
int ipflag;
char name[256];
unsigned char *neworg[3], *newref[3];
static char ipb[5] = {' ','I','P','B','D'};
if (!mpeg2_struct->quiet)
{
fprintf(stderr,"Encoding frame %d ",cframe);
fflush(stderr);
}
MPEG2_evaluate_frame_info(cframe, &f0, &realframe, neworg, newref,
&sxf, &syf, &sxb, &syb,mpeg2_struct);
if ( realframe > max )
{
return -1;
}
mpeg2_struct->temp_ref = realframe - f0;
mpeg2_struct->frame_pred_dct = mpeg2_struct->frame_pred_dct_tab[mpeg2_struct->pict_type-1];
mpeg2_struct->q_scale_type = mpeg2_struct->qscale_tab[mpeg2_struct->pict_type-1];
mpeg2_struct->intravlc = mpeg2_struct->intravlc_tab[mpeg2_struct->pict_type-1];
mpeg2_struct->altscan = mpeg2_struct->altscan_tab[mpeg2_struct->pict_type-1];
if ( mpeg2_struct->statfile )
{
fprintf(mpeg2_struct->statfile,"\nFrame %d (#%d in display order):\n",cframe,realframe);
fprintf(mpeg2_struct->statfile," picture_type=%c\n",ipb[mpeg2_struct->pict_type]);
fprintf(mpeg2_struct->statfile," temporal_reference=%d\n",mpeg2_struct->temp_ref);
fprintf(mpeg2_struct->statfile," frame_pred_frame_dct=%d\n",mpeg2_struct->frame_pred_dct);
fprintf(mpeg2_struct->statfile," q_scale_type=%d\n",mpeg2_struct->q_scale_type);
fprintf(mpeg2_struct->statfile," intra_vlc_format=%d\n",mpeg2_struct->intravlc);
fprintf(mpeg2_struct->statfile," alternate_scan=%d\n",mpeg2_struct->altscan);
if (mpeg2_struct->pict_type!=I_TYPE)
{
fprintf(mpeg2_struct->statfile," forward search window: %d...%d / %d...%d\n",
-sxf,sxf,-syf,syf);
fprintf(mpeg2_struct->statfile," forward vector range: %d...%d.5 / %d...%d.5\n",
-(4<<mpeg2_struct->forw_hor_f_code),(4<<mpeg2_struct->forw_hor_f_code)-1,
-(4<<mpeg2_struct->forw_vert_f_code),(4<<mpeg2_struct->forw_vert_f_code)-1);
}
if (mpeg2_struct->pict_type==B_TYPE)
{
fprintf(mpeg2_struct->statfile," backward search window: %d...%d / %d...%d\n",
-sxb,sxb,-syb,syb);
fprintf(mpeg2_struct->statfile," backward vector range: %d...%d.5 / %d...%d.5\n",
-(4<<mpeg2_struct->back_hor_f_code),(4<<mpeg2_struct->back_hor_f_code)-1,
-(4<<mpeg2_struct->back_vert_f_code),(4<<mpeg2_struct->back_vert_f_code)-1);
}
}
sprintf(name,mpeg2_struct->tplorg,realframe+mpeg2_struct->frame0);
MPEG2_readframe(name,neworg,mpeg2_struct);
if (mpeg2_struct->fieldpic)
{
if (!mpeg2_struct->quiet)
{
fprintf(stderr,"\nfirst field (%s) ",mpeg2_struct->topfirst ? "top" : "bot");
fflush(stderr);
}
mpeg2_struct->pict_struct = mpeg2_struct->topfirst ? TOP_FIELD : BOTTOM_FIELD;
MPEG2_motion_estimation(mpeg2_struct->oldorgframe[0],mpeg2_struct->neworgframe[0],
mpeg2_struct->oldrefframe[0],mpeg2_struct->newrefframe[0],
neworg[0],newref[0],
sxf,syf,sxb,syb,mpeg2_struct->mbinfo,0,0,mpeg2_struct);
MPEG2_predict(mpeg2_struct->oldrefframe,mpeg2_struct->newrefframe,mpeg2_struct->predframe,0,mpeg2_struct->mbinfo,mpeg2_struct);
MPEG2_dct_type_estimation(mpeg2_struct->predframe[0],neworg[0],mpeg2_struct->mbinfo,mpeg2_struct);
MPEG2_transform(mpeg2_struct->predframe,neworg,mpeg2_struct->mbinfo,mpeg2_struct->blocks,mpeg2_struct);
MPEG2_putpict(neworg[0],mpeg2_struct);
for (k=0; k<mpeg2_struct->mb_height2*mpeg2_struct->mb_width; k++)
{
if (mpeg2_struct->mbinfo[k].mb_type & MB_INTRA)
for (j=0; j<mpeg2_struct->block_count; j++)
MPEG2_iquant_intra(mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],
mpeg2_struct->dc_prec,mpeg2_struct->intra_q,mpeg2_struct->mbinfo[k].mquant,mpeg2_struct);
else
for (j=0;j<mpeg2_struct->block_count;j++)
MPEG2_iquant_non_intra(mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],
mpeg2_struct->inter_q,mpeg2_struct->mbinfo[k].mquant,mpeg2_struct);
}
MPEG2_itransform(mpeg2_struct->predframe,newref,mpeg2_struct->mbinfo,mpeg2_struct->blocks,mpeg2_struct);
MPEG2_calcSNR(neworg,newref,mpeg2_struct);
MPEG2_stats(mpeg2_struct);
if (!mpeg2_struct->quiet)
{
fprintf(stderr,"second field (%s) ",mpeg2_struct->topfirst ? "bot" : "top");
fflush(stderr);
}
mpeg2_struct->pict_struct = mpeg2_struct->topfirst ? BOTTOM_FIELD : TOP_FIELD;
ipflag = (mpeg2_struct->pict_type==I_TYPE);
if (ipflag)
{
/* first field = I, second field = P */
mpeg2_struct->pict_type = P_TYPE;
mpeg2_struct->forw_hor_f_code = mpeg2_struct->motion_data[0].forw_hor_f_code;
mpeg2_struct->forw_vert_f_code = mpeg2_struct->motion_data[0].forw_vert_f_code;
mpeg2_struct->back_hor_f_code = mpeg2_struct->back_vert_f_code = 15;
sxf = mpeg2_struct->motion_data[0].sxf;
syf = mpeg2_struct->motion_data[0].syf;
}
MPEG2_motion_estimation(mpeg2_struct->oldorgframe[0],mpeg2_struct->neworgframe[0],
mpeg2_struct->oldrefframe[0],mpeg2_struct->newrefframe[0],
neworg[0],newref[0],
sxf,syf,sxb,syb,mpeg2_struct->mbinfo,1,ipflag,mpeg2_struct);
MPEG2_predict(mpeg2_struct->oldrefframe,mpeg2_struct->newrefframe,mpeg2_struct->predframe,1,mpeg2_struct->mbinfo,mpeg2_struct);
MPEG2_dct_type_estimation(mpeg2_struct->predframe[0],neworg[0],mpeg2_struct->mbinfo,mpeg2_struct);
MPEG2_transform(mpeg2_struct->predframe,neworg,mpeg2_struct->mbinfo,mpeg2_struct->blocks,mpeg2_struct);
MPEG2_putpict(neworg[0],mpeg2_struct);
for (k=0; k<mpeg2_struct->mb_height2*mpeg2_struct->mb_width; k++)
{
if (mpeg2_struct->mbinfo[k].mb_type & MB_INTRA)
for (j=0; j<mpeg2_struct->block_count; j++)
MPEG2_iquant_intra(mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],
mpeg2_struct->dc_prec,mpeg2_struct->intra_q,mpeg2_struct->mbinfo[k].mquant,mpeg2_struct);
else
for (j=0;j<mpeg2_struct->block_count;j++)
MPEG2_iquant_non_intra(mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],
mpeg2_struct->inter_q,mpeg2_struct->mbinfo[k].mquant,mpeg2_struct);
}
MPEG2_itransform(mpeg2_struct->predframe,newref,mpeg2_struct->mbinfo,mpeg2_struct->blocks,mpeg2_struct);
MPEG2_calcSNR(neworg,newref,mpeg2_struct);
MPEG2_stats(mpeg2_struct);
}
else
{
mpeg2_struct->pict_struct = FRAME_PICTURE;
/* do MPEG2_motion_estimation
*
* uses source frames (...orgframe) for full pel search
* and reconstructed frames (...refframe) for half pel search
*/
MPEG2_motion_estimation(mpeg2_struct->oldorgframe[0],mpeg2_struct->neworgframe[0],
mpeg2_struct->oldrefframe[0],mpeg2_struct->newrefframe[0],
neworg[0],newref[0],
sxf,syf,sxb,syb,mpeg2_struct->mbinfo,0,0,mpeg2_struct);
MPEG2_predict(mpeg2_struct->oldrefframe,mpeg2_struct->newrefframe,mpeg2_struct->predframe,0,mpeg2_struct->mbinfo,mpeg2_struct);
MPEG2_dct_type_estimation(mpeg2_struct->predframe[0],neworg[0],mpeg2_struct->mbinfo,mpeg2_struct);
MPEG2_transform(mpeg2_struct->predframe,neworg,mpeg2_struct->mbinfo,mpeg2_struct->blocks,mpeg2_struct);
MPEG2_putpict(neworg[0],mpeg2_struct);
for (k=0; k<mpeg2_struct->mb_height*mpeg2_struct->mb_width; k++)
{
if (mpeg2_struct->mbinfo[k].mb_type & MB_INTRA)
for (j=0; j<mpeg2_struct->block_count; j++)
MPEG2_iquant_intra(mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],
mpeg2_struct->dc_prec,mpeg2_struct->intra_q,mpeg2_struct->mbinfo[k].mquant,mpeg2_struct);
else
for (j=0;j<mpeg2_struct->block_count;j++)
MPEG2_iquant_non_intra(mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],mpeg2_struct->blocks[k*mpeg2_struct->block_count+j],
mpeg2_struct->inter_q,mpeg2_struct->mbinfo[k].mquant,mpeg2_struct);
}
MPEG2_itransform(mpeg2_struct->predframe,newref,mpeg2_struct->mbinfo,mpeg2_struct->blocks,mpeg2_struct);
MPEG2_calcSNR(neworg,newref,mpeg2_struct);
MPEG2_stats(mpeg2_struct);
}
sprintf(name,mpeg2_struct->tplref,realframe+mpeg2_struct->frame0);
MPEG2_writeframe(name,newref,mpeg2_struct);
return realframe;
}
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