mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-26 18:06:18 +03:00
81 lines
1.4 KiB
C
81 lines
1.4 KiB
C
/*
|
|
* The Python Imaging Library.
|
|
* $Id$
|
|
*
|
|
* encoder for EPS hex data
|
|
*
|
|
* history:
|
|
* 96-04-19 fl created
|
|
* 96-06-27 fl don't drop last block of encoded data
|
|
*
|
|
* notes:
|
|
* FIXME: rename to HexEncode.c ??
|
|
*
|
|
* Copyright (c) Fredrik Lundh 1996.
|
|
* Copyright (c) Secret Labs AB 1997.
|
|
*
|
|
* See the README file for information on usage and redistribution.
|
|
*/
|
|
|
|
|
|
#include "Imaging.h"
|
|
|
|
|
|
int
|
|
ImagingEpsEncode(Imaging im, ImagingCodecState state, UINT8* buf, int bytes)
|
|
{
|
|
enum { HEXBYTE=1, NEWLINE };
|
|
const char *hex = "0123456789abcdef";
|
|
|
|
UINT8* ptr = buf;
|
|
UINT8* in, i;
|
|
|
|
if (!state->state) {
|
|
state->state = HEXBYTE;
|
|
state->xsize *= im->pixelsize; /* Hack! */
|
|
}
|
|
|
|
in = (UINT8*) im->image[state->y];
|
|
|
|
for (;;) {
|
|
|
|
if (state->state == NEWLINE) {
|
|
if (bytes < 1)
|
|
break;
|
|
*ptr++ = '\n';
|
|
bytes--;
|
|
state->state = HEXBYTE;
|
|
}
|
|
|
|
if (bytes < 2)
|
|
break;
|
|
|
|
i = in[state->x++];
|
|
*ptr++ = hex[(i>>4)&15];
|
|
*ptr++ = hex[i&15];
|
|
bytes -= 2;
|
|
|
|
/* Skip junk bytes */
|
|
if (im->bands == 3 && (state->x & 3) == 3)
|
|
state->x++;
|
|
|
|
if (++state->count >= 79/2) {
|
|
state->state = NEWLINE;
|
|
state->count = 0;
|
|
}
|
|
|
|
if (state->x >= state->xsize) {
|
|
state->x = 0;
|
|
if (++state->y >= state->ysize) {
|
|
state->errcode = IMAGING_CODEC_END;
|
|
break;
|
|
}
|
|
in = (UINT8*) im->image[state->y];
|
|
}
|
|
|
|
}
|
|
|
|
return ptr - buf;
|
|
|
|
}
|