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https://github.com/python-pillow/Pillow.git
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initial merge of wiredfool/Python-Imaging-Library-G4-Tiff-Support
This commit is contained in:
wiredfool
parent
deca17accd
commit
e782fe721e
63
libImaging/Tiff.h
Normal file
63
libImaging/Tiff.h
Normal file
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@ -0,0 +1,63 @@
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/*
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* The Python Imaging Library.
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* $Id: //modules/pil/libImaging/Tiff.h#1 $
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*
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* declarations for the LibTiff-based Group3 and Group4 decoder
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*
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*/
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#ifndef _TIFFIO_
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#include <tiffio.h>
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#endif
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#ifndef _TIFF_
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#include <tiff.h>
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#endif
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#ifndef min
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#define min(x,y) (( x > y ) ? y : x )
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#define max(x,y) (( x < y ) ? y : x )
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#endif
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#ifndef _PIL_LIBTIFF_
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#define _PIL_LIBTIFF_
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#ifndef Py_ssize_t
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/* Py_ssize_t is not included in py2.4 */
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#define Py_ssize_t int
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#endif
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typedef struct {
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tdata_t data; /* tdata_t == void* */
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toff_t loc; /* toff_t == uint32 */
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tsize_t size; /* tsize_t == int32 */
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int fp;
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TIFF *tiff; /* Used in write */
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toff_t eof;
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int flrealloc; /* may we realloc */
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} TIFFSTATE;
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extern int ImagingLibTiffInit(ImagingCodecState state, int compression, int fp);
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extern int ImagingLibTiffEncodeInit(ImagingCodecState state, char *filename, int fp);
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extern int ImagingLibTiffSetField(ImagingCodecState state, ttag_t tag, ...);
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#if defined(_MSC_VER) && (_MSC_VER == 1310)
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/* VS2003/py2.4 can't use varargs. Skipping trace for now.*/
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#define TRACE(args)
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#else
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/*
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#define VA_ARGS(...) __VA_ARGS__
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#define TRACE(args) fprintf(stderr, VA_ARGS args)
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*/
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#define TRACE(args)
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#endif
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#endif
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424
libImaging/TiffDecode.c
Normal file
424
libImaging/TiffDecode.c
Normal file
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@ -0,0 +1,424 @@
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/*
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* The Python Imaging Library.
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* $Id: //modules/pil/libImaging/TiffDecode.c#1 $
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*
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* LibTiff-based Group3 and Group4 decoder
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*
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*
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* started modding to use non-private tiff functions to port to libtiff 4.x
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* eds 3/12/12
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*
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*/
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#include "Imaging.h"
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#ifdef HAVE_LIBTIFF
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#undef INT32
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#undef UINT32
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#ifndef uint64
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#define uint64 uint64_t
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#endif
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#ifndef uint
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#define uint uint32
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#endif
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#include "Tiff.h"
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void dump_state(const TIFFSTATE *state){
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TRACE(("State: Location %u size %d eof %d data: %p \n", (uint)state->loc,
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(int)state->size, (uint)state->eof, state->data));
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}
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/*
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procs for TIFFOpenClient
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*/
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tsize_t _tiffReadProc(thandle_t hdata, tdata_t buf, tsize_t size) {
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TIFFSTATE *state = (TIFFSTATE *)hdata;
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tsize_t to_read;
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TRACE(("_tiffReadProc: %d \n", (int)size));
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dump_state(state);
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to_read = min(size, min(state->size, (tsize_t)state->eof) - (tsize_t)state->loc);
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TRACE(("to_read: %d\n", (int)to_read));
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_TIFFmemcpy(buf, (UINT8 *)state->data + state->loc, to_read);
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state->loc += (toff_t)to_read;
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TRACE( ("location: %u\n", (uint)state->loc));
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return to_read;
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}
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tsize_t _tiffWriteProc(thandle_t hdata, tdata_t buf, tsize_t size) {
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TIFFSTATE *state = (TIFFSTATE *)hdata;
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tsize_t to_write;
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TRACE(("_tiffWriteProc: %d \n", (int)size));
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dump_state(state);
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to_write = min(size, state->size - (tsize_t)state->loc);
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if (state->flrealloc && size>to_write) {
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tdata_t new;
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tsize_t newsize=state->size;
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while (newsize < (size + state->size)) {
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newsize += 64*1024;
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// newsize*=2; // UNDONE, by 64k chunks?
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}
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TRACE(("Reallocing in write to %d bytes\n", (int)newsize));
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new = realloc(state->data, newsize);
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if (!new) {
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// fail out
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return 0;
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}
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state->data = new;
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state->size = newsize;
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to_write = size;
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}
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TRACE(("to_write: %d\n", (int)to_write));
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_TIFFmemcpy((UINT8 *)state->data + state->loc, buf, to_write);
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state->loc += (toff_t)to_write;
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state->eof = max(state->loc, state->eof);
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dump_state(state);
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return to_write;
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}
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toff_t _tiffSeekProc(thandle_t hdata, toff_t off, int whence) {
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TIFFSTATE *state = (TIFFSTATE *)hdata;
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TRACE(("_tiffSeekProc: off: %u whence: %d \n", (uint)off, whence));
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dump_state(state);
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switch (whence) {
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case 0:
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state->loc = off;
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break;
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case 1:
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state->loc += off;
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break;
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case 2:
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state->loc = state->eof + off;
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break;
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}
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dump_state(state);
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return state->loc;
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}
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int _tiffCloseProc(thandle_t hdata) {
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TIFFSTATE *state = (TIFFSTATE *)hdata;
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TRACE(("_tiffCloseProc \n"));
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dump_state(state);
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return 0;
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}
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toff_t _tiffSizeProc(thandle_t hdata) {
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TIFFSTATE *state = (TIFFSTATE *)hdata;
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TRACE(("_tiffSizeProc \n"));
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dump_state(state);
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return (toff_t)state->size;
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}
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int _tiffMapProc(thandle_t hdata, tdata_t* pbase, toff_t* psize) {
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TIFFSTATE *state = (TIFFSTATE *)hdata;
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TRACE(("_tiffMapProc input size: %u, data: %p\n", (uint)*psize, *pbase));
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dump_state(state);
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*pbase = state->data;
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*psize = state->size;
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TRACE(("_tiffMapProc returning size: %u, data: %p\n", (uint)*psize, *pbase));
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return (1);
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}
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int _tiffNullMapProc(thandle_t hdata, tdata_t* pbase, toff_t* psize) {
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(void) hdata; (void) pbase; (void) psize;
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return (0);
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}
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void _tiffUnmapProc(thandle_t hdata, tdata_t base, toff_t size) {
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TRACE(("_tiffUnMapProc\n"));
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(void) hdata; (void) base; (void) size;
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}
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int ImagingLibTiffInit(ImagingCodecState state, int compression, int fp) {
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TIFFSTATE *clientstate = (TIFFSTATE *)state->context;
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TRACE(("initing libtiff\n"));
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TRACE(("Compression: %d, filepointer: %d \n", compression, fp));
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TRACE(("State: count %d, state %d, x %d, y %d, ystep %d\n", state->count, state->state,
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state->x, state->y, state->ystep));
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TRACE(("State: xsize %d, ysize %d, xoff %d, yoff %d \n", state->xsize, state->ysize,
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state->xoff, state->yoff));
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TRACE(("State: bits %d, bytes %d \n", state->bits, state->bytes));
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TRACE(("State: context %p \n", state->context));
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clientstate->loc = 0;
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clientstate->size = 0;
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clientstate->data = 0;
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clientstate->fp = fp;
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clientstate->eof = 0;
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return 1;
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}
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int ImagingLibTiffDecode(Imaging im, ImagingCodecState state, UINT8* buffer, int bytes) {
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TIFFSTATE *clientstate = (TIFFSTATE *)state->context;
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char *filename = "tempfile.tif";
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char *mode = "r";
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TIFF *tiff;
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int size;
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/* buffer is the encoded file, bytes is the length of the encoded file */
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/* it all ends up in state->buffer, which is a uint8* from Imaging.h */
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TRACE(("in decoder: bytes %d\n", bytes));
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TRACE(("State: count %d, state %d, x %d, y %d, ystep %d\n", state->count, state->state,
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state->x, state->y, state->ystep));
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TRACE(("State: xsize %d, ysize %d, xoff %d, yoff %d \n", state->xsize, state->ysize,
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state->xoff, state->yoff));
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TRACE(("State: bits %d, bytes %d \n", state->bits, state->bytes));
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TRACE(("Buffer: %p: %c%c%c%c\n", buffer, (char)buffer[0], (char)buffer[1],(char)buffer[2], (char)buffer[3]));
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TRACE(("State->Buffer: %c%c%c%c\n", (char)state->buffer[0], (char)state->buffer[1],(char)state->buffer[2], (char)state->buffer[3]));
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TRACE(("Image: mode %s, type %d, bands: %d, xsize %d, ysize %d \n",
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im->mode, im->type, im->bands, im->xsize, im->ysize));
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TRACE(("Image: image8 %p, image32 %p, image %p, block %p \n",
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im->image8, im->image32, im->image, im->block));
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TRACE(("Image: pixelsize: %d, linesize %d \n",
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im->pixelsize, im->linesize));
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dump_state(clientstate);
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clientstate->size = bytes;
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clientstate->eof = clientstate->size;
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clientstate->loc = 0;
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clientstate->data = (tdata_t)buffer;
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clientstate->flrealloc = 0;
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dump_state(clientstate);
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if (clientstate->fp) {
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TRACE(("Opening using fd: %d\n",clientstate->fp));
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tiff = TIFFFdOpen(clientstate->fp, filename, mode);
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} else {
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TRACE(("Opening from string\n"));
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tiff = TIFFClientOpen(filename, mode,
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(thandle_t) clientstate,
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_tiffReadProc, _tiffWriteProc,
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_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
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_tiffMapProc, _tiffUnmapProc);
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}
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if (!tiff){
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TRACE(("Error, didn't get the tiff\n"));
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state->errcode = IMAGING_CODEC_BROKEN;
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return -1;
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}
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size = TIFFScanlineSize(tiff);
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TRACE(("ScanlineSize: %d \n", size));
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if (size > state->bytes) {
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TRACE(("Error, scanline size > buffer size\n"));
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state->errcode = IMAGING_CODEC_BROKEN;
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TIFFClose(tiff);
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return -1;
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}
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// Have to do this row by row and shove stuff into the buffer that way,
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// with shuffle. (or, just alloc a buffer myself, then figure out how to get it
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// back in. Can't use read encoded stripe.
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// This thing pretty much requires that I have the whole image in one shot.
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// Prehaps a stub version would work better???
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while(state->y < state->ysize){
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if (TIFFReadScanline(tiff, (tdata_t)state->buffer, (uint32)state->y, 0) == -1) {
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TRACE(("Decode Error, row %d\n", state->y));
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state->errcode = IMAGING_CODEC_BROKEN;
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TIFFClose(tiff);
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return -1;
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}
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/* TRACE(("Decoded row %d \n", state->y)); */
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state->shuffle((UINT8*) im->image[state->y + state->yoff] +
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state->xoff * im->pixelsize,
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state->buffer,
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state->xsize);
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state->y++;
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}
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TIFFClose(tiff);
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TRACE(("Done Decoding, Returning \n"));
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// Returning -1 here to force ImageFile.load to break, rather than
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// even think about looping back around.
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return -1;
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}
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int ImagingLibTiffEncodeInit(ImagingCodecState state, char *filename, int fp) {
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// Open the FD or the pointer as a tiff file, for writing.
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// We may have to do some monkeying around to make this really work.
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// If we have a fp, then we're good.
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// If we have a memory string, we're probably going to have to malloc, then
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// shuffle bytes into the writescanline process.
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// Going to have to deal with the directory as well.
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TIFFSTATE *clientstate = (TIFFSTATE *)state->context;
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int bufsize = 64*1024;
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char *mode = "w";
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TRACE(("initing libtiff\n"));
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TRACE(("Filename %s, filepointer: %d \n", filename, fp));
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TRACE(("State: count %d, state %d, x %d, y %d, ystep %d\n", state->count, state->state,
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state->x, state->y, state->ystep));
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TRACE(("State: xsize %d, ysize %d, xoff %d, yoff %d \n", state->xsize, state->ysize,
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state->xoff, state->yoff));
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TRACE(("State: bits %d, bytes %d \n", state->bits, state->bytes));
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TRACE(("State: context %p \n", state->context));
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clientstate->loc = 0;
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clientstate->size = 0;
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clientstate->eof =0;
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clientstate->data = 0;
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clientstate->flrealloc = 0;
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clientstate->fp = fp;
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state->state = 0;
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if (fp) {
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TRACE(("Opening using fd: %d for writing \n",clientstate->fp));
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clientstate->tiff = TIFFFdOpen(clientstate->fp, filename, mode);
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} else {
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// malloc a buffer to write the tif, we're going to need to realloc or something if we need bigger.
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TRACE(("Opening a buffer for writing \n"));
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clientstate->data = malloc(bufsize);
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clientstate->size = bufsize;
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clientstate->flrealloc=1;
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if (!clientstate->data) {
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TRACE(("Error, couldn't allocate a buffer of size %d\n", bufsize));
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return 0;
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}
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clientstate->tiff = TIFFClientOpen(filename, mode,
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(thandle_t) clientstate,
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_tiffReadProc, _tiffWriteProc,
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_tiffSeekProc, _tiffCloseProc, _tiffSizeProc,
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_tiffNullMapProc, _tiffUnmapProc); /*force no mmap*/
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}
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if (!clientstate->tiff) {
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TRACE(("Error, couldn't open tiff file\n"));
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return 0;
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}
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return 1;
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}
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int ImagingLibTiffSetField(ImagingCodecState state, ttag_t tag, ...){
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// after tif_dir.c->TIFFSetField.
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TIFFSTATE *clientstate = (TIFFSTATE *)state->context;
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va_list ap;
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int status;
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va_start(ap, tag);
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status = TIFFVSetField(clientstate->tiff, tag, ap);
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va_end(ap);
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return status;
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}
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int ImagingLibTiffEncode(Imaging im, ImagingCodecState state, UINT8* buffer, int bytes) {
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/* One shot encoder. Encode everything to the tiff in the clientstate.
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If we're running off of a FD, then run once, we're good, everything
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ends up in the file, we close and we're done.
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If we're going to memory, then we need to write the whole file into memory, then
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parcel it back out to the pystring buffer bytes at a time.
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*/
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TIFFSTATE *clientstate = (TIFFSTATE *)state->context;
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TIFF *tiff = clientstate->tiff;
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TRACE(("in encoder: bytes %d\n", bytes));
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TRACE(("State: count %d, state %d, x %d, y %d, ystep %d\n", state->count, state->state,
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state->x, state->y, state->ystep));
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TRACE(("State: xsize %d, ysize %d, xoff %d, yoff %d \n", state->xsize, state->ysize,
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state->xoff, state->yoff));
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TRACE(("State: bits %d, bytes %d \n", state->bits, state->bytes));
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TRACE(("Buffer: %p: %c%c%c%c\n", buffer, (char)buffer[0], (char)buffer[1],(char)buffer[2], (char)buffer[3]));
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TRACE(("State->Buffer: %c%c%c%c\n", (char)state->buffer[0], (char)state->buffer[1],(char)state->buffer[2], (char)state->buffer[3]));
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TRACE(("Image: mode %s, type %d, bands: %d, xsize %d, ysize %d \n",
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im->mode, im->type, im->bands, im->xsize, im->ysize));
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TRACE(("Image: image8 %p, image32 %p, image %p, block %p \n",
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im->image8, im->image32, im->image, im->block));
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TRACE(("Image: pixelsize: %d, linesize %d \n",
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im->pixelsize, im->linesize));
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dump_state(clientstate);
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if (state->state == 0) {
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TRACE(("Encoding line bt line"));
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while(state->y < state->ysize){
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state->shuffle(state->buffer,
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(UINT8*) im->image[state->y + state->yoff] +
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state->xoff * im->pixelsize,
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state->xsize);
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|
||||
if (TIFFWriteScanline(tiff, (tdata_t)(state->buffer), (uint32)state->y, 0) == -1) {
|
||||
TRACE(("Encode Error, row %d\n", state->y));
|
||||
state->errcode = IMAGING_CODEC_BROKEN;
|
||||
TIFFClose(tiff);
|
||||
if (!clientstate->fp){
|
||||
free(clientstate->data);
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
state->y++;
|
||||
}
|
||||
|
||||
if (state->y == state->ysize) {
|
||||
state->state=1;
|
||||
|
||||
TRACE(("Flushing \n"));
|
||||
if (!TIFFFlush(tiff)) {
|
||||
TRACE(("Error flushing the tiff"));
|
||||
// likely reason is memory.
|
||||
state->errcode = IMAGING_CODEC_MEMORY;
|
||||
TIFFClose(tiff);
|
||||
if (!clientstate->fp){
|
||||
free(clientstate->data);
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
TRACE(("Closing \n"));
|
||||
TIFFClose(tiff);
|
||||
// reset the clientstate metadata to use it to read out the buffer.
|
||||
clientstate->loc = 0;
|
||||
clientstate->size = clientstate->eof; // redundant?
|
||||
}
|
||||
}
|
||||
|
||||
if (state->state == 1 && !clientstate->fp) {
|
||||
int read = (int)_tiffReadProc(clientstate, (tdata_t)buffer, (tsize_t)bytes);
|
||||
TRACE(("Buffer: %p: %c%c%c%c\n", buffer, (char)buffer[0], (char)buffer[1],(char)buffer[2], (char)buffer[3]));
|
||||
if (clientstate->loc == clientstate->eof) {
|
||||
TRACE(("Hit EOF, calling an end, freeing data"));
|
||||
state->errcode = IMAGING_CODEC_END;
|
||||
free(clientstate->data);
|
||||
}
|
||||
return read;
|
||||
}
|
||||
|
||||
state->errcode = IMAGING_CODEC_END;
|
||||
return 0;
|
||||
}
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user