static int decore_init(int hor_size, int ver_size, unsigned long color_depth)
{
// init global stuff
ld = &base;
coeff_pred = &ac_dc;
initbits ();
// read first vol and vop
mp4_hdr.width = hor_size;
mp4_hdr.height = ver_size;
mp4_hdr.quant_precision = 5;
mp4_hdr.bits_per_pixel = 8;
mp4_hdr.quant_type = 0;
mp4_hdr.time_increment_resolution = 15;
mp4_hdr.complexity_estimation_disable = 1;
mp4_hdr.picnum = 0;
mp4_hdr.mb_xsize = mp4_hdr.width / 16;
mp4_hdr.mb_ysize = mp4_hdr.height / 16;
mp4_hdr.mba_size = mp4_hdr.mb_xsize * mp4_hdr.mb_ysize;
// set picture dimension global vars
{
horizontal_size = mp4_hdr.width;
vertical_size = mp4_hdr.height;
mb_width = horizontal_size / 16;
mb_height = vertical_size / 16;
coded_picture_width = horizontal_size + 64;
coded_picture_height = vertical_size + 64;
chrom_width = coded_picture_width >> 1;
chrom_height = coded_picture_height >> 1;
}
// init decoder
initdecoder();
switch (color_depth)
{
case 32:
convert_yuv = yuv2rgb_32;
break;
case 16:
convert_yuv = yuv2rgb_16;
break;
default:
convert_yuv = yuv2rgb_24;
break;
}
return 1;
}
int DecompressFrame(unsigned char *cdata,int size,unsigned char **outdata,int outsize)
{
static int first=1,framenum=0;
//Initialize output pointers...
yp=NULL;
up=NULL;
vp=NULL;
// Copy to other buffer can be done...
// So that source buffer will be free
cindex=0; // index into the cframe....
csize=size; // size of compressed frame
cframe=cdata; // pointer to compressed frme
//memcpy(cframe,cdata,size);
// Reset the pointers...
initbits();
// Get the frame header
getheader();
// If first time...then call initdecoder....
// This has to be done after calling getheader()
// because getheader() setup some variables using the information
// from header...
if (first)
{
initdecoder();
first = 0;
}
// Decompress the frame and get the picture frame in YUV format
getpicture(&framenum);
framenum++;
if(yp==NULL || up==NULL || vp==NULL)
{
myLog.WriteLog((char*)"DecompressFrame",(char*)"decompression failed...");
return 0;
}
*outdata = yp;
/*
if(yp!=NULL && up!=NULL && vp!=NULL){
FILE *fpyuv;
if (framenum==1)
fpyuv=fopen("/sdcard/video2.yuv","wb");
else
fpyuv=fopen("/sdcard/video2.yuv","ab");
if (fpyuv!=NULL){
char sMsgLog[128];
int iUVSize = (horizontal_size/2) * (vertical_size/2);
fwrite(yp,1,horizontal_size * vertical_size+(iUVSize*2), fpyuv);
fclose(fpyuv);
}
}*/
return 1;
// convert YUV to RGB
// ******* TODO *********
// check if outdata is enough to store rgb data
//
int totalsize=horizontal_size * vertical_size *4;
if(outsize< totalsize || outdata==NULL)
{
myLog.WriteLog((char*)"DecompressFrame",(char*)"Output buffer is not sufficient");
return 0;
}
// ConvertYUVtoRGB32(yp,up,vp,outdata,horizontal_size,vertical_size);
/*FILE *fpyuv;
char sFileName[128];
sprintf(sFileName, "/sdcard/video_%d.rgba", framenum);
fpyuv=fopen(sFileName,"wb");
if (fpyuv!=NULL){
fwrite(outdata,1,horizontal_size * vertical_size*4, fpyuv);
fclose(fpyuv);
}*/
//myLog.WriteLog((char*)"DecompressFrame()",(char*)"Decode SUCCESSFUL :-)");
return 1;
int DecompressFrame(unsigned char *cdata,int size,unsigned char *outdata,int outsize)
{
static int first=1,framenum=0;
//Initialize output pointers...
yp=NULL;
up=NULL;
vp=NULL;
// Copy to other buffer can be done...
// So that source buffer will be free
cindex=0; // index into the cframe....
csize=size; // size of compressed frame
cframe=cdata; // pointer to compressed frme
//memcpy(cframe,cdata,size);
// Reset the pointers...
initbits();
// Get the frame header
getheader();
// If first time...then call initdecoder....
// This has to be done after calling getheader()
// because getheader() setup some variables using the information
// from header...
if (first)
{
initdecoder();
first = 0;
}
// Decompress the frame and get the picture frame in YUV format
getpicture(&framenum);
framenum++;
if(yp==NULL || up==NULL || vp==NULL)
{
if(trace)
fputs("decompression failed...",dlog);
return 0;
}
// convert YUV to RGB
// ******* TODO *********
// check if outdata is enough to store rgb data
//
int totalsize=horizontal_size * vertical_size *3;
if(outsize< totalsize || outdata==NULL)
{
if(dlog)
fputs("Output buffer is not sufficient",dlog);
return 0;
}
ConvertYUV2RGB(yp,up,vp,outdata,horizontal_size,vertical_size);
return 1;
}
