static int _ccv_read_raw(ccv_dense_matrix_t** x, void* data, int type, int rows, int cols, int scanline)
{
assert(rows > 0 && cols > 0 && scanline > 0);
if (type & CCV_IO_NO_COPY)
{
// there is no conversion that we can apply if it is NO_COPY mode
// NO_COPY mode generate an "unreusable" matrix, which requires you to
// manually release its data block (which is, in fact the same data
// block you passed in)
int ctype = CCV_8U | CCV_C1;
switch (type & 0xFF)
{
case CCV_IO_RGB_RAW:
case CCV_IO_BGR_RAW:
ctype = CCV_8U | CCV_C3;
break;
case CCV_IO_RGBA_RAW:
case CCV_IO_ARGB_RAW:
case CCV_IO_BGRA_RAW:
case CCV_IO_ABGR_RAW:
ctype = CCV_8U | CCV_C4;
break;
case CCV_IO_GRAY_RAW:
default:
/* default one */
break;
}
*x = ccv_dense_matrix_new(rows, cols, ctype | CCV_NO_DATA_ALLOC, data, 0);
(*x)->step = scanline;
} else {
switch (type & 0xFF)
{
case CCV_IO_RGB_RAW:
_ccv_read_rgb_raw(x, data, type, rows, cols, scanline);
break;
case CCV_IO_RGBA_RAW:
_ccv_read_rgba_raw(x, data, type, rows, cols, scanline);
break;
case CCV_IO_ARGB_RAW:
_ccv_read_argb_raw(x, data, type, rows, cols, scanline);
break;
case CCV_IO_BGR_RAW:
_ccv_read_bgr_raw(x, data, type, rows, cols, scanline);
break;
case CCV_IO_BGRA_RAW:
_ccv_read_bgra_raw(x, data, type, rows, cols, scanline);
break;
case CCV_IO_ABGR_RAW:
_ccv_read_abgr_raw(x, data, type, rows, cols, scanline);
break;
case CCV_IO_GRAY_RAW:
_ccv_read_gray_raw(x, data, type, rows, cols, scanline);
break;
}
}
if (*x != 0)
ccv_make_matrix_immutable(*x);
return CCV_IO_FINAL;
}
int ccv_read(const char* in, ccv_dense_matrix_t** x, int type)
{
FILE* fd = 0;
int ctype = (type & 0xF00) ? CCV_8U | ((type & 0xF00) >> 8) : 0;
if (type & CCV_IO_ANY_FILE)
{
fd = fopen(in, "rb");
if (!fd)
return CCV_IO_ERROR;
}
if ((type & 0XFF) == CCV_IO_ANY_FILE)
{
unsigned char sig[8];
(void) fread(sig, 1, 8, fd);
if (memcmp(sig, "\x89\x50\x4e\x47\xd\xa\x1a\xa", 8) == 0)
type = CCV_IO_PNG_FILE;
else if (memcmp(sig, "\xff\xd8\xff", 3) == 0)
type = CCV_IO_JPEG_FILE;
else if (memcmp(sig, "BM", 2) == 0)
type = CCV_IO_BMP_FILE;
else if (memcmp(sig, "CCVBINDM", 8) == 0)
type = CCV_IO_BINARY_FILE;
fseek(fd, 0, SEEK_SET);
}
switch (type & 0XFF)
{
#ifdef HAVE_LIBJPEG
case CCV_IO_JPEG_FILE:
_ccv_read_jpeg_fd(fd, x, ctype);
break;
#endif
#ifdef HAVE_LIBPNG
case CCV_IO_PNG_FILE:
_ccv_read_png_fd(fd, x, ctype);
break;
#endif
case CCV_IO_BMP_FILE:
_ccv_read_bmp_fd(fd, x, ctype);
break;
case CCV_IO_BINARY_FILE:
_ccv_read_binary_fd(fd, x, ctype);
}
if (*x != 0)
ccv_make_matrix_immutable(*x);
if (type & CCV_IO_ANY_FILE)
fclose(fd);
return CCV_IO_FINAL;
}
static int _ccv_read_and_close_fd(FILE* fd, ccv_dense_matrix_t** x, int type)
{
int ctype = (type & 0xF00) ? CCV_8U | ((type & 0xF00) >> 8) : 0;
if ((type & 0XFF) == CCV_IO_ANY_FILE)
{
unsigned char sig[8];
(void) fread(sig, 1, 8, fd);
if (memcmp(sig, "\x89\x50\x4e\x47\xd\xa\x1a\xa", 8) == 0)
type = CCV_IO_PNG_FILE;
else if (memcmp(sig, "\xff\xd8\xff", 3) == 0)
type = CCV_IO_JPEG_FILE;
else if (memcmp(sig, "BM", 2) == 0)
type = CCV_IO_BMP_FILE;
else if (memcmp(sig, "CCVBINDM", 8) == 0)
type = CCV_IO_BINARY_FILE;
else {
printf("Unknown file signature in '%s'\n", sig);
exit(1); // XXX make exit/return gracefull later
};
fseek(fd, 0, SEEK_SET);
}
switch (type & 0XFF)
{
#ifdef HAVE_LIBJPEG
case CCV_IO_JPEG_FILE:
_ccv_read_jpeg_fd(fd, x, ctype);
break;
#endif
#ifdef HAVE_LIBPNG
case CCV_IO_PNG_FILE:
_ccv_read_png_fd(fd, x, ctype);
break;
#endif
case CCV_IO_BMP_FILE:
_ccv_read_bmp_fd(fd, x, ctype);
break;
case CCV_IO_BINARY_FILE:
_ccv_read_binary_fd(fd, x, ctype);
}
if (*x != 0)
ccv_make_matrix_immutable(*x);
if (type & CCV_IO_ANY_FILE)
fclose(fd);
return CCV_IO_FINAL;
}