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#include <stdio.h>
#include <stdlib.h>
#include "config.h"
#ifdef USE_LIBMPEG2
#include "mp_msg.h"
#include "vd_internal.h"
//#undef MPEG12_POSTPROC
static vd_info_t info =
{
"MPEG 1/2 Video decoder libmpeg2-v0.3.1",
"libmpeg2",
"A'rpi & Fabian Franz",
"Aaron & Walken",
"native"
};
LIBVD_EXTERN(libmpeg2)
//#include "libvo/video_out.h" // FIXME!!!
#include "libmpeg2/mpeg2.h"
#include "libmpeg2/mpeg2_internal.h"
//#include "libmpeg2/convert.h"
#include "../cpudetect.h"
// to set/get/query special features/parameters
static int control(sh_video_t *sh,int cmd,void* arg,...){
return CONTROL_UNKNOWN;
}
// init driver
static int init(sh_video_t *sh){
mpeg2dec_t * mpeg2dec;
const mpeg2_info_t * info;
int accel;
accel = 0;
if(gCpuCaps.hasMMX)
accel |= MPEG2_ACCEL_X86_MMX;
if(gCpuCaps.hasMMX2)
accel |= MPEG2_ACCEL_X86_MMXEXT;
if(gCpuCaps.has3DNow)
accel |= MPEG2_ACCEL_X86_3DNOW;
if(gCpuCaps.hasAltiVec)
accel |= MPEG2_ACCEL_PPC_ALTIVEC;
#ifdef HAVE_MLIB
accel |= MPEG2_ACCEL_MLIB;
#endif
mpeg2_accel(accel);
mpeg2dec = mpeg2_init ();
if(!mpeg2dec) return 0;
mpeg2_custom_fbuf(mpeg2dec,1); // enable DR1
sh->context=mpeg2dec;
return 1;
//return mpcodecs_config_vo(sh,sh->disp_w,sh->disp_h,IMGFMT_YV12);
}
// uninit driver
static void uninit(sh_video_t *sh){
mpeg2dec_t * mpeg2dec = sh->context;
mpeg2_close (mpeg2dec);
}
static void draw_slice (void * _sh, uint8_t ** src, unsigned int y){
sh_video_t* sh = (sh_video_t*) _sh;
mpeg2dec_t* mpeg2dec = sh->context;
const mpeg2_info_t * info = mpeg2_info (mpeg2dec);
int stride[3];
// printf("draw_slice() y=%d \n",y);
stride[0]=mpeg2dec->decoder.stride;
stride[1]=stride[2]=mpeg2dec->decoder.uv_stride;
mpcodecs_draw_slice(sh, (uint8_t **)src,
stride, info->sequence->display_width,
(y+16<=info->sequence->display_height) ? 16 :
info->sequence->display_height-y,
0, y);
}
// decode a frame
static mp_image_t* decode(sh_video_t *sh,void* data,int len,int flags){
mpeg2dec_t * mpeg2dec = sh->context;
const mpeg2_info_t * info = mpeg2_info (mpeg2dec);
mp_image_t* mpi=NULL;
int drop_frame, framedrop=flags&3;
if(len<=0) return NULL; // skipped null frame
// append extra 'end of frame' code:
((char*)data+len)[0]=0;
((char*)data+len)[1]=0;
((char*)data+len)[2]=1;
((char*)data+len)[3]=0xff;
len+=4;
mpeg2_buffer (mpeg2dec, data, data+len);
while(1){
int state=mpeg2_parse (mpeg2dec);
switch(state){
case -1:
// parsing of the passed buffer finished, return.
// if(!mpi) printf("\nNO PICTURE!\n");
return mpi;
case STATE_SEQUENCE:
// video parameters inited/changed, (re)init libvo:
if(!mpcodecs_config_vo(sh,
info->sequence->width,
info->sequence->height, IMGFMT_YV12)) return 0;
break;
case STATE_PICTURE: {
int type=info->current_picture->flags&PIC_MASK_CODING_TYPE;
mp_image_t* mpi;
drop_frame = framedrop && (mpeg2dec->decoder.coding_type == B_TYPE);
drop_frame |= framedrop>=2; // hard drop
if (drop_frame) {
mpeg2_skip(mpeg2dec, 1);
//printf("Dropping Frame ...\n");
break;
}
mpeg2_skip(mpeg2dec, 0); //mpeg2skip skips frames until set again to 0
// get_buffer "callback":
mpi=mpcodecs_get_image(sh,MP_IMGTYPE_IPB,
(type==PIC_FLAG_CODING_TYPE_B)
? ((!framedrop && vd_use_slices &&
(info->current_picture->flags&PIC_FLAG_PROGRESSIVE_FRAME)) ?
MP_IMGFLAG_DRAW_CALLBACK:0)
: (MP_IMGFLAG_PRESERVE|MP_IMGFLAG_READABLE),
(info->sequence->picture_width+15)&(~15),
(info->sequence->picture_height+15)&(~15) );
if(!mpi) return 0; // VO ERROR!!!!!!!!
mpeg2_set_buf(mpeg2dec, mpi->planes, mpi);
if (info->current_picture->flags&PIC_FLAG_TOP_FIELD_FIRST)
mpi->fields |= MP_IMGFIELD_TOP_FIRST;
else mpi->fields &= ~MP_IMGFIELD_TOP_FIRST;
if (info->current_picture->flags&PIC_FLAG_REPEAT_FIRST_FIELD)
mpi->fields |= MP_IMGFIELD_REPEAT_FIRST;
else mpi->fields &= ~MP_IMGFIELD_REPEAT_FIRST;
mpi->fields |= MP_IMGFIELD_ORDERED;
#ifdef MPEG12_POSTPROC
if(!mpi->qscale){
mpi->qstride=(info->sequence->picture_width+15)>>4;
mpi->qscale=malloc(mpi->qstride*((info->sequence->picture_height+15)>>4));
}
mpeg2dec->decoder.quant_store=mpi->qscale;
mpeg2dec->decoder.quant_stride=mpi->qstride;
mpi->pict_type=type; // 1->I, 2->P, 3->B
mpi->qscale_type= 1;
#endif
if(mpi->flags&MP_IMGFLAG_DRAW_CALLBACK &&
!(mpi->flags&MP_IMGFLAG_DIRECT)){
// nice, filter/vo likes draw_callback :)
mpeg2dec->decoder.convert=draw_slice;
mpeg2dec->decoder.fbuf_id=sh;
} else
mpeg2dec->decoder.convert=NULL;
break;
}
case STATE_SLICE:
case STATE_END:
// decoding done:
if(mpi) printf("AJAJJJJJJJJ2!\n");
if(info->display_fbuf) mpi=info->display_fbuf->id;
// return mpi;
}
}
}
#endif
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