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JoshDB
Joined: 05 Oct 2005
Posts: 87
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 Posted: Mon Jan 02, 2006 2:07 am Post subject: Loading JPEG code not working [fixed] |
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Hey guys, I've installed the JPEG lib from the svn and also pulled down a sample bit of code that loads JPEGs. Can you tell me what's wrong with this picture?
When I try to compile this, it gives me the error:
| Quote: | graphics.c: In function 'loadImageJPEG':
graphics.c:533: error: 'for' loop initial declaration used outside C99 mode
graphics.c:543: error: 'for' loop initial declaration used outside C99 mode
make: *** [graphics.o] Error 1 |
| Code: | #include <stdlib.h>
#include <malloc.h>
#include <pspdisplay.h>
#include <psputils.h>
#include <png.h>
#include <pspgu.h>
#include <jpeglib.h>
#include <jerror.h>
#include "graphics.h"
#include "framebuffer.h"
// Other code, none related...
Image* loadImageJPEG(const char* filename)
{
struct jpeg_decompress_struct dinfo;
struct jpeg_error_mgr jerr;
dinfo.err = jpeg_std_error(&jerr);
jpeg_create_decompress(&dinfo);
FILE* inFile = fopen(filename, "rb");
if (!inFile) {
jpeg_destroy_decompress(&dinfo);
return NULL;
}
jpeg_stdio_src(&dinfo, inFile);
jpeg_read_header(&dinfo, TRUE);
int width = dinfo.image_width;
int height = dinfo.image_height;
jpeg_start_decompress(&dinfo);
Image* image = (Image*) malloc(sizeof(Image));
if (!image) {
jpeg_destroy_decompress(&dinfo);
return NULL;
}
image->imageWidth = width;
image->imageHeight = height;
image->textureWidth = getNextPower2(width);
image->textureHeight = getNextPower2(height);
image->data = (Color*) memalign(16, image->textureWidth * image->textureHeight * sizeof(Color));
u8* line = (u8*) malloc(width * 3);
if (!line) {
jpeg_destroy_decompress(&dinfo);
return NULL;
}
if (dinfo.jpeg_color_space == JCS_GRAYSCALE) {
while (dinfo.output_scanline < dinfo.output_height) {
int y = dinfo.output_scanline;
jpeg_read_scanlines(&dinfo, &line, 1);
for (int x = 0; x < width; x++) { // <-- Line 533
Color c = line[x];
image->data[x + image->textureWidth * y] = c | (c << 8) | (c << 16) | 0xff000000;;
}
}
} else {
while (dinfo.output_scanline < dinfo.output_height) {
int y = dinfo.output_scanline;
jpeg_read_scanlines(&dinfo, &line, 1);
u8* linePointer = line;
for (int x = 0; x < width; x++) { // <-- Line 543
Color c = *(linePointer++);
c |= (*(linePointer++)) << 8;
c |= (*(linePointer++)) << 16;
image->data[x + image->textureWidth * y] = c | 0xff000000;
}
}
}
jpeg_finish_decompress(&dinfo);
jpeg_destroy_decompress(&dinfo);
free(line);
return image;
} |
Last edited by JoshDB on Mon Jan 02, 2006 6:52 am; edited 1 time in total |
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AnonymousTipster
Joined: 01 Jul 2005
Posts: 197
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| Posted: Mon Jan 02, 2006 2:20 am Post subject: |
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Where you have
for(int x =0; ....)
Change it to
int x=0;
for(x=0;......
You can't declare a variable inside a for() clause with GCC. |
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JoshDB
Joined: 05 Oct 2005
Posts: 87
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| Posted: Mon Jan 02, 2006 2:31 am Post subject: |
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Wow, thanks, it worked. Really fast response, just went to go search for 'loading JPEGs' and you responded ( :
However, although that error is gone, now I get a few others:
I'm guessing these errors have something to do with the included files from the JPEG library?
Edit: Actually, could it be something in the Makefile? Perhaps not referencing the lib? |
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JoshDB
Joined: 05 Oct 2005
Posts: 87
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| Posted: Mon Jan 02, 2006 2:46 am Post subject: |
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Woot!
Alright, I added
| Quote: | | LIBS = -lpspgu -lpng -lz -lm -ljpeg |
To the Makefile, and it works. |
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