int jpeg_type(int *img_type, unsigned char *idata, const int ilen)
{
int ret;
unsigned short marker;
unsigned char *cbufptr, *ebufptr;
cbufptr = idata;
ebufptr = idata + ilen;
/* Get SOI */
if((ret = getc_marker_jpegl(&marker, SOI, &cbufptr, ebufptr)))
return(ret);
/* Get next marker. */
if((ret = getc_marker_jpegl(&marker, ANY, &cbufptr, ebufptr)))
return(ret);
/* While not at Start of Scan (SOS) - */
/* the start of encoded image data ... */
while(marker != SOS){
if(marker == SOF3){
*img_type = JPEGL_IMG;
return(0);
}
else if(marker == SOF0){
*img_type = JPEGB_IMG;
return(0);
}
/* Skip marker segment. */
if((ret = getc_skip_marker_segment(marker, &cbufptr, ebufptr)))
return(ret);
/* Get next marker. */
if((ret = getc_marker_jpegl(&marker, ANY, &cbufptr, ebufptr)))
return(ret);
}
/* JPEG type not found ... */
fprintf(stderr, "ERROR : jpeg_type : Could not determine JPEG type ");
fprintf(stderr, "(ie. baseline or lossless)\n");
*img_type = -1;
return(-2);
}
NISTWSQ_API int __cdecl wsq_get_comments(
byte*** comments_data,
int* comments_count,
byte* wsq_data,
int wsq_data_length)
{
byte* cbufptr = nullptr;
byte* ebufptr = nullptr;
cbufptr = wsq_data;
ebufptr = wsq_data + wsq_data_length;
int ret = 0;
unsigned short marker = 0;
byte** comments = nullptr;
int ccount = 0;
// Get SOI
if(ret = getc_marker_wsq(&marker, SOI_WSQ, &cbufptr, ebufptr))
return ret;
// Get next marker.
if(ret = getc_marker_wsq(&marker, ANY_WSQ, &cbufptr, ebufptr))
return ret;
// While not at Start of Block (SOB)
while(marker != SOB_WSQ)
{
if(marker == COM_WSQ)
{
byte* current_comment;
if(ret = getc_comment(¤t_comment, &cbufptr, ebufptr))
return ret;
ccount++;
byte** array = (byte**)malloc(sizeof(byte*) * ccount);
if (ccount > 1)
{
for (int i = 0; i < ccount - 1; i++)
array[i] = comments[i];
free(comments);
}
array[ccount - 1] = current_comment;
comments = array;
}
else // skip
{
if(ret = getc_skip_marker_segment(marker, &cbufptr, ebufptr))
return ret;
}
// get next marker
if (ret = getc_marker_wsq(&marker, ANY_WSQ, &cbufptr, ebufptr))
return ret;
}
*comments_count = ccount;
*comments_data = comments;
return 0;
}
