-#include "image.h"
+#include "imager.h"
#include <stdio.h>
+#include "iolayer.h"
#ifndef _MSC_VER
#include <unistd.h>
#endif
#include <string.h>
+#include <errno.h>
-#define TRUE 1
-#define FALSE 0
-#define BSIZ 100*BUFSIZ
/*
intrl: interlace flag,
0 = sample interleaving
1 = line interleaving
- 2 = image interleaving
+ 2 = image interleaving (not implemented)
*/
+static
void
-expandchannels(unsigned char *inbuffer,unsigned char *outbuffer,int chunks,int datachannels,int storechannels) {
- int ch,i;
- if (inbuffer==outbuffer) return; /* Check if data is already in expanded format */
- for(ch=0;ch<chunks;ch++) for (i=0;i<storechannels;i++) outbuffer[ch*storechannels+i]=inbuffer[ch*datachannels+i];
+interleave(unsigned char *inbuffer,unsigned char *outbuffer,i_img_dim rowsize,int channels) {
+ i_img_dim ind,i;
+ int ch;
+ i=0;
+ if (inbuffer == outbuffer) return; /* Check if data is already in interleaved format */
+ for (ind=0; ind<rowsize; ind++)
+ for (ch=0; ch<channels; ch++)
+ outbuffer[i++] = inbuffer[rowsize*ch+ind];
+}
+
+static
+void
+expandchannels(unsigned char *inbuffer, unsigned char *outbuffer,
+ i_img_dim xsize, int datachannels, int storechannels) {
+ i_img_dim x;
+ int ch;
+ int copy_chans = storechannels > datachannels ? datachannels : storechannels;
+ if (inbuffer == outbuffer)
+ return; /* Check if data is already in expanded format */
+ for(x = 0; x < xsize; x++) {
+ for (ch = 0; ch < copy_chans; ch++)
+ outbuffer[x*storechannels+ch] = inbuffer[x*datachannels+ch];
+ for (; ch < storechannels; ch++)
+ outbuffer[x*storechannels+ch] = 0;
+ }
}
i_img *
-i_readraw(int fd,int x,int y,int datachannels,int storechannels,int intrl) {
+i_readraw_wiol(io_glue *ig, i_img_dim x, i_img_dim y, int datachannels, int storechannels, int intrl) {
i_img* im;
- int rc,k;
-
+ ssize_t rc;
+ i_img_dim k;
+
unsigned char *inbuffer;
unsigned char *ilbuffer;
unsigned char *exbuffer;
- int inbuflen,ilbuflen,exbuflen;
+ size_t inbuflen,ilbuflen,exbuflen;
- mm_log((1,"readraw(fd %d,x %d,y %d,datachannels %d,storechannels %d,intrl %d)\n",fd,x,y,datachannels,storechannels,intrl));
-
- im=i_img_empty_ch(NULL,x,y,storechannels);
+ i_clear_error();
- inbuflen=im->xsize*datachannels;
- ilbuflen=inbuflen;
- exbuflen=im->xsize*storechannels;
- inbuffer=(unsigned char*)mymalloc(inbuflen);
- mm_log((1,"inbuflen: %d, ilbuflen: %d, exbuflen: %d.\n",inbuflen,ilbuflen,exbuflen));
-
- if (intrl==0) ilbuffer=inbuffer; else ilbuffer=(unsigned char*)mymalloc(inbuflen);
- if (datachannels==storechannels) exbuffer=ilbuffer; else exbuffer=(unsigned char*)mymalloc(exbuflen);
+ mm_log((1, "i_readraw(ig %p,x %" i_DF ",y %" i_DF ",datachannels %d,storechannels %d,intrl %d)\n",
+ ig, i_DFc(x), i_DFc(y), datachannels, storechannels, intrl));
+ if (intrl != 0 && intrl != 1) {
+ i_push_error(0, "raw_interleave must be 0 or 1");
+ return NULL;
+ }
+ if (storechannels < 1 || storechannels > 4) {
+ i_push_error(0, "raw_storechannels must be between 1 and 4");
+ return NULL;
+ }
+
+ im = i_img_empty_ch(NULL,x,y,storechannels);
+ if (!im)
+ return NULL;
+
+ inbuflen = im->xsize*datachannels;
+ ilbuflen = inbuflen;
+ exbuflen = im->xsize*storechannels;
+ inbuffer = (unsigned char*)mymalloc(inbuflen);
+ mm_log((1,"inbuflen: %ld, ilbuflen: %ld, exbuflen: %ld.\n",
+ (long)inbuflen, (long)ilbuflen, (long)exbuflen));
+
+ if (intrl==0) ilbuffer = inbuffer;
+ else ilbuffer=mymalloc(inbuflen);
+
+ if (datachannels==storechannels) exbuffer=ilbuffer;
+ else exbuffer= mymalloc(exbuflen);
+
k=0;
- while(k<im->ysize) {
- rc=myread(fd,inbuffer,inbuflen);
- if (rc!=inbuflen) { fprintf(stderr,"Premature end of file.\n"); exit(2); }
+ while( k<im->ysize ) {
+ rc = i_io_read(ig, inbuffer, inbuflen);
+ if (rc != inbuflen) {
+ if (rc < 0)
+ i_push_error(0, "error reading file");
+ else
+ i_push_error(0, "premature end of file");
+ i_img_destroy(im);
+ myfree(inbuffer);
+ if (intrl != 0) myfree(ilbuffer);
+ if (datachannels != storechannels) myfree(exbuffer);
+ return NULL;
+ }
interleave(inbuffer,ilbuffer,im->xsize,datachannels);
expandchannels(ilbuffer,exbuffer,im->xsize,datachannels,storechannels);
- memcpy(&(im->data[im->xsize*storechannels*k]),exbuffer,exbuflen);
+ /* FIXME: Do we ever want to save to a virtual image? */
+ memcpy(&(im->idata[im->xsize*storechannels*k]),exbuffer,exbuflen);
k++;
}
myfree(inbuffer);
- if (intrl!=0) myfree(ilbuffer);
- if (datachannels!=storechannels) myfree(exbuffer);
+ if (intrl != 0) myfree(ilbuffer);
+ if (datachannels != storechannels) myfree(exbuffer);
+
+ i_tags_add(&im->tags, "i_format", 0, "raw", -1, 0);
+
return im;
}
undef_int
-i_writeraw(i_img* im,int fd) {
- int rc;
- mm_log((1,"writeraw(im 0x%x,fd %d)\n",im,fd));
+i_writeraw_wiol(i_img* im, io_glue *ig) {
+ ssize_t rc;
+
+ i_clear_error();
+ mm_log((1,"writeraw(im %p,ig %p)\n", im, ig));
if (im == NULL) { mm_log((1,"Image is empty\n")); return(0); }
- rc=mywrite(fd,im->data,im->bytes);
- if (rc!=im->bytes) { mm_log((1,"i_writeraw: Couldn't write to file\n")); return(0); }
- return(1);
-}
-
-
-
-
-
-
-
+ if (!im->virtual) {
+ rc = i_io_write(ig,im->idata,im->bytes);
+ if (rc != im->bytes) {
+ i_push_error(errno, "Could not write to file");
+ mm_log((1,"i_writeraw: Couldn't write to file\n"));
+ return(0);
+ }
+ } else {
+ if (im->type == i_direct_type) {
+ /* just save it as 8-bits, maybe support saving higher bit count
+ raw images later */
+ size_t line_size = im->xsize * im->channels;
+ unsigned char *data = mymalloc(line_size);
+
+ i_img_dim y = 0;
+ rc = line_size;
+ while (rc == line_size && y < im->ysize) {
+ i_gsamp(im, 0, im->xsize, y, data, NULL, im->channels);
+ rc = i_io_write(ig, data, line_size);
+ ++y;
+ }
+ if (rc != line_size) {
+ i_push_error(errno, "write error");
+ return 0;
+ }
+ myfree(data);
+ } else {
+ /* paletted image - assumes the caller puts the palette somewhere
+ else
+ */
+ size_t line_size = sizeof(i_palidx) * im->xsize;
+ i_palidx *data = mymalloc(sizeof(i_palidx) * im->xsize);
+
+ i_img_dim y = 0;
+ rc = line_size;
+ while (rc == line_size && y < im->ysize) {
+ i_gpal(im, 0, im->xsize, y, data);
+ rc = i_io_write(ig, data, line_size);
+ ++y;
+ }
+ myfree(data);
+ if (rc != line_size) {
+ i_push_error(errno, "write error");
+ return 0;
+ }
+ }
+ }
+ if (i_io_close(ig))
+ return 0;
+ return(1);
+}
projects / imager.git / blobdiff