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Create WritePNGqfs so screenshots can be written as png.

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This commit is contained in:
Bill Currie 2011-12-31 17:23:32 +09:00
parent 718595db45
commit d8dbfa9c24
2 changed files with 112 additions and 81 deletions
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4
include/QF/png.h
View file

@ -35,6 +35,8 @@
#include "QF/quakefs.h"
struct tex_s *LoadPNG (QFile *infile);
void WritePNG (const char *fileName, byte *data, int width, int height);
void WritePNG (const char *fileName, const byte *data, int width, int height);
void WritePNGqfs (const char *fileName, const byte *data,
int width, int height);
#endif//__QF_png_h

73
libs/image/png.c
View file

@ -28,8 +28,7 @@
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] =
"$Id$";
static __attribute__ ((used)) const char rcsid[] = "$Id$";
#ifdef HAVE_PNG
@ -196,10 +195,9 @@ LoadPNG (QFile *infile)
#define WRITEPNG_BIT_DEPTH 8
VISIBLE void
WritePNG (const char *fileName, byte *data, int width, int height)
static int
write_png (QFile *outfile, const byte *data, int width, int height)
{
QFile *outfile;
int i;
png_structp png_ptr;
png_infop info_ptr;
@ -209,25 +207,19 @@ WritePNG (const char *fileName, byte *data, int width, int height)
png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
if (png_ptr == NULL) {
Sys_Printf ("png_Create_write_struct failed\n");
return;
return 0;
}
info_ptr = png_create_info_struct (png_ptr);
if (png_ptr == NULL) {
png_destroy_write_struct (&png_ptr, NULL);
Sys_Printf ("png_create_info_struct failed\n");
return;
return 0;
}
if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_write_struct (&png_ptr, &info_ptr);
return;
}
outfile = Qopen (fileName, "wb");
if (!outfile) {
Sys_Printf ("Couldn't open %s\n", fileName);
return; /* Can't open file */
return 0;
}
png_set_write_fn (png_ptr, outfile, user_write_data, user_flush_data);
@ -235,11 +227,12 @@ WritePNG (const char *fileName, byte *data, int width, int height)
/* Write the header */
if (setjmp(png_jmpbuf(png_ptr))) {
Sys_Printf ("Error writing png header\n");
return;
return 0;
}
png_set_IHDR (png_ptr, info_ptr, width, height, WRITEPNG_BIT_DEPTH,
PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
/* NOTE: Write gamma support? */
/* png_set_gAMA (png_ptr, info_ptr, gamma); */
@ -249,19 +242,21 @@ WritePNG (const char *fileName, byte *data, int width, int height)
png_write_info (png_ptr, info_ptr);
/* Setup row pointers */
if ((row_pointers = (png_bytepp)malloc(height * sizeof(png_bytep))) == NULL) {
row_pointers = (png_bytepp)malloc(height * sizeof(png_bytep));
if (row_pointers == NULL) {
png_destroy_write_struct (&png_ptr, &info_ptr);
return; /* Out of memory */
return 0; /* Out of memory */
}
for (i = 0; i < height; i++) {
row_pointers[height - i - 1] = data + (i * width * 3);
//FIXME stupid png types :P
row_pointers[height - i - 1] = (byte *) data + (i * width * 3);
}
if (setjmp(png_jmpbuf(png_ptr))) {
Sys_Printf ("Error writing PNG image data\n");
return;
return 0;
}
png_write_image (png_ptr, row_pointers);
@ -269,11 +264,41 @@ WritePNG (const char *fileName, byte *data, int width, int height)
/* end write */
if (setjmp(png_jmpbuf(png_ptr))) {
Sys_Printf ("Error writing end of PNG image\n");
return;
return 0;
}
png_write_end (png_ptr, NULL);
return 1;
}
VISIBLE void
WritePNG (const char *fileName, const byte *data, int width, int height)
{
QFile *outfile;
outfile = Qopen (fileName, "wb");
if (!outfile) {
Sys_Printf ("Couldn't open %s\n", fileName);
return; /* Can't open file */
}
if (!write_png (outfile, data, width, height))
Qremove (fileName);
Qclose (outfile);
}
VISIBLE void
WritePNGqfs (const char *fileName, const byte *data, int width, int height)
{
QFile *outfile;
outfile = QFS_Open (fileName, "wb");
if (!outfile) {
Sys_Printf ("Couldn't open %s\n", fileName);
return; /* Can't open file */
}
if (!write_png (outfile, data, width, height))
QFS_Remove (fileName);
Qclose (outfile);
}
@ -291,7 +316,11 @@ LoadPNG (QFile *infile)
VISIBLE void
WritePNG (const char *fileName, byte *data, int width, int height)
{
return;
}
VISIBLE void
WritePNGqfs (const char *fileName, const byte *data, int width, int height)
{
}
#endif