// BITS_IN_JSAMPLE is a compile time defined options.
// We need both 8 an 12;
// To avoid renaming *all* the Jpeg functions,
// BITS_IN_JSAMPLE is a compile time defined options.
// We need both 8 an 12;
// To avoid renaming *all* the Jpeg functions,
#define jpeg_read_header jReadHeader
#define jpeg_read_scanlines jReadScanlines
#define jpeg_finish_decompress jFinDecompress
#define jpeg_read_header jReadHeader
#define jpeg_read_scanlines jReadScanlines
#define jpeg_finish_decompress jFinDecompress
/*
* <setjmp.h> is used for the optional error recovery mechanism shown in
* the second part of the example.
/*
* <setjmp.h> is used for the optional error recovery mechanism shown in
* the second part of the example.
- struct jpeg_error_mgr pub; /* "public" fields */
- jmp_buf setjmp_buffer; /* for return to caller */
+ struct jpeg_error_mgr pub; /* "public" fields */
+ jmp_buf setjmp_buffer; /* for return to caller */
-METHODDEF(void)
-my_error_exit (j_common_ptr cinfo) {
- /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */
- my_error_ptr myerr = (my_error_ptr) cinfo->err;
+METHODDEF(void) my_error_exit (j_common_ptr cinfo) {
+ /* cinfo->err really points to a my_error_mgr struct, so coerce pointer */
+ my_error_ptr myerr = (my_error_ptr) cinfo->err;
- /* Always display the message. */
- /* We could postpone this until after returning, if we chose. */
- (*cinfo->err->output_message) (cinfo);
+ /* Always display the message. */
+ /* We could postpone this until after returning, if we chose. */
+ (*cinfo->err->output_message) (cinfo);
- /* Return control to the setjmp point */
- longjmp(myerr->setjmp_buffer, 1);
+ /* Return control to the setjmp point */
+ longjmp(myerr->setjmp_buffer, 1);
/* This struct contains the JPEG decompression parameters and pointers to
* working space (which is allocated as needed by the JPEG library).
*/
/* This struct contains the JPEG decompression parameters and pointers to
* working space (which is allocated as needed by the JPEG library).
*/
struct jpeg_decompress_struct cinfo;
/* -------------- inside, we found :
struct jpeg_decompress_struct cinfo;
/* -------------- inside, we found :
// typedef JSAMPROW *JSAMPARRAY; /* ptr to some rows (a 2-D sample array) */
// typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */
// typedef JSAMPROW *JSAMPARRAY; /* ptr to some rows (a 2-D sample array) */
// typedef JSAMPARRAY *JSAMPIMAGE; /* a 3-D sample array: top index is color */
/* In this example we want to open the input file before doing anything else,
* so that the setjmp() error recovery below can assume the file is open.
/* In this example we want to open the input file before doing anything else,
* so that the setjmp() error recovery below can assume the file is open.
jpeg_create_decompress(&cinfo);
/* Step 2: specify data source (eg, a file) */
jpeg_create_decompress(&cinfo);
/* Step 2: specify data source (eg, a file) */
jpeg_stdio_src(&cinfo, fp);
/* Step 3: read file parameters with jpeg_read_header() */
jpeg_stdio_src(&cinfo, fp);
/* Step 3: read file parameters with jpeg_read_header() */
(void) jpeg_read_header(&cinfo, TRUE);
/* We can ignore the return value from jpeg_read_header since
(void) jpeg_read_header(&cinfo, TRUE);
/* We can ignore the return value from jpeg_read_header since
printf("--------------Header contents :----------------\n");
printf("image_width %d image_height %d\n",
printf("--------------Header contents :----------------\n");
printf("image_width %d image_height %d\n",
/* In this example, we don't need to change any of the defaults set by
* jpeg_read_header(), so we do nothing here.
*/
/* Step 5: Start decompressor */
/* In this example, we don't need to change any of the defaults set by
* jpeg_read_header(), so we do nothing here.
*/
/* Step 5: Start decompressor */
(void) jpeg_start_decompress(&cinfo);
/* We can ignore the return value since suspension is not possible
(void) jpeg_start_decompress(&cinfo);
/* We can ignore the return value since suspension is not possible
printf ("cinfo.output_width %d cinfo.output_components %d row_stride %d\n",
cinfo.output_width, cinfo.output_components,row_stride);
printf ("cinfo.output_width %d cinfo.output_components %d row_stride %d\n",
cinfo.output_width, cinfo.output_components,row_stride);
/* Make a one-row-high sample array that will go away when done with image */
buffer = (*cinfo.mem->alloc_sarray)
/* Make a one-row-high sample array that will go away when done with image */
buffer = (*cinfo.mem->alloc_sarray)
- ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
+ ((j_common_ptr) &cinfo, JPOOL_IMAGE, row_stride, 1);
- if (DEBUG) printf ("cinfo.output_height %d cinfo.output_width %d\n",
- cinfo.output_height,cinfo.output_width);
+#ifdef GDCM_jpr_DEBUG
+ printf ("cinfo.output_height %d cinfo.output_width %d\n",
+ cinfo.output_height,cinfo.output_width);
+#endif //GDCM_jpr_DEBUG
/* We can ignore the return value since suspension is not possible
* with the stdio data source.
*/
/* Step 8: Release JPEG decompression object */
/* We can ignore the return value since suspension is not possible
* with the stdio data source.
*/
/* Step 8: Release JPEG decompression object */
/* This is an important step since it will release a good deal of memory. */
jpeg_destroy_decompress(&cinfo);
/* This is an important step since it will release a good deal of memory. */
jpeg_destroy_decompress(&cinfo);