#include "image.h"
#include "jpeg.h"
+cvar_t sv_writepicture_quality = {CVAR_SAVE, "sv_writepicture_quality", "10", "WritePicture quality offset (higher means better quality, but slower)"};
/*
=================================================================
// Handle for JPEG DLL
dllhandle_t jpeg_dll = NULL;
+qboolean jpeg_tried_loading = 0;
static unsigned char jpeg_eoi_marker [2] = {0xFF, JPEG_EOI};
-static qboolean error_in_jpeg;
+static jmp_buf error_in_jpeg;
+static qboolean jpeg_toolarge;
// Our own output manager for JPEG compression
typedef struct
if (jpeg_dll)
return true;
+ if (jpeg_tried_loading) // only try once
+ return false;
+
+ jpeg_tried_loading = true;
+
// Load the DLL
return Sys_LoadLibrary (dllnames, &jpeg_dll, jpegfuncs);
}
void JPEG_CloseLibrary (void)
{
Sys_UnloadLibrary (&jpeg_dll);
+ jpeg_tried_loading = false; // allow retry
}
static void JPEG_ErrorExit (j_common_ptr cinfo)
{
((struct jpeg_decompress_struct*)cinfo)->err->output_message (cinfo);
- error_in_jpeg = true;
+ longjmp(error_in_jpeg, 1);
}
{
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
- unsigned char *image_buffer, *scanline;
+ unsigned char *image_buffer = NULL, *scanline = NULL;
unsigned int line;
// No DLL = no JPEGs
cinfo.err = qjpeg_std_error (&jerr);
qjpeg_create_decompress (&cinfo);
+ if(setjmp(error_in_jpeg))
+ goto error_caught;
+ cinfo.err = qjpeg_std_error (&jerr);
+ cinfo.err->error_exit = JPEG_ErrorExit;
JPEG_MemSrc (&cinfo, f, filesize);
qjpeg_read_header (&cinfo, TRUE);
qjpeg_start_decompress (&cinfo);
qjpeg_destroy_decompress (&cinfo);
return image_buffer;
+
+error_caught:
+ if(scanline)
+ Mem_Free (scanline);
+ if(image_buffer)
+ Mem_Free (image_buffer);
+ qjpeg_destroy_decompress (&cinfo);
+ return NULL;
}
my_dest_ptr dest = (my_dest_ptr)cinfo->dest;
if (FS_Write (dest->outfile, dest->buffer, JPEG_OUTPUT_BUF_SIZE) != (size_t) JPEG_OUTPUT_BUF_SIZE)
- {
- error_in_jpeg = true;
- return false;
- }
+ longjmp(error_in_jpeg, 1);
dest->pub.next_output_byte = dest->buffer;
dest->pub.free_in_buffer = JPEG_OUTPUT_BUF_SIZE;
// Write any data remaining in the buffer
if (datacount > 0)
if (FS_Write (dest->outfile, dest->buffer, datacount) != (fs_offset_t)datacount)
- error_in_jpeg = true;
+ longjmp(error_in_jpeg, 1);
}
static void JPEG_FileDest (j_compress_ptr cinfo, qfile_t* outfile)
static jboolean JPEG_Mem_EmptyOutputBuffer (j_compress_ptr cinfo)
{
- error_in_jpeg = true;
- return false;
+ my_dest_ptr dest = (my_dest_ptr)cinfo->dest;
+ jpeg_toolarge = true;
+ dest->pub.next_output_byte = dest->buffer;
+ dest->pub.free_in_buffer = dest->bufsize;
+ return true;
}
static void JPEG_Mem_TermDestination (j_compress_ptr cinfo)
dest->pub.term_destination = JPEG_Mem_TermDestination;
dest->outfile = NULL;
- dest->buffer = buf;
+ dest->buffer = (unsigned char *) buf;
dest->bufsize = bufsize;
}
}
// Open the file
- file = FS_Open (filename, "wb", true, false);
+ file = FS_OpenRealFile(filename, "wb", true);
if (!file)
return false;
+ if(setjmp(error_in_jpeg))
+ goto error_caught;
cinfo.err = qjpeg_std_error (&jerr);
cinfo.err->error_exit = JPEG_ErrorExit;
- error_in_jpeg = false;
qjpeg_create_compress (&cinfo);
JPEG_FileDest (&cinfo, file);
scanline = &data[offset - cinfo.next_scanline * linesize];
qjpeg_write_scanlines (&cinfo, &scanline, 1);
- if (error_in_jpeg)
- break;
}
qjpeg_finish_compress (&cinfo);
FS_Close (file);
return true;
+
+error_caught:
+ qjpeg_destroy_compress (&cinfo);
+ FS_Close (file);
+ return false;
}
static size_t JPEG_try_SaveImage_to_Buffer (struct jpeg_compress_struct *cinfo, char *jpegbuf, size_t jpegsize, int quality, int width, int height, unsigned char *data)
{
unsigned char *scanline;
unsigned int linesize;
- int offset;
-
- error_in_jpeg = false;
+ jpeg_toolarge = false;
JPEG_MemDest (cinfo, jpegbuf, jpegsize);
// Set the parameters for compression
// Compress each scanline
linesize = width * 3;
- offset = linesize * (cinfo->image_height - 1);
while (cinfo->next_scanline < cinfo->image_height)
{
- scanline = &data[offset - cinfo->next_scanline * linesize];
+ scanline = &data[cinfo->next_scanline * linesize];
qjpeg_write_scanlines (cinfo, &scanline, 1);
- if (error_in_jpeg)
- break;
}
qjpeg_finish_compress (cinfo);
- return error_in_jpeg ? 0 : ((my_dest_ptr) cinfo->dest)->bufsize;
+ if(jpeg_toolarge)
+ return 0;
+
+ return ((my_dest_ptr) cinfo->dest)->bufsize;
}
size_t JPEG_SaveImage_to_Buffer (char *jpegbuf, size_t jpegsize, int width, int height, unsigned char *data)
return false;
}
+ if(setjmp(error_in_jpeg))
+ goto error_caught;
cinfo.err = qjpeg_std_error (&jerr);
cinfo.err->error_exit = JPEG_ErrorExit;
//quality_guess = (100 * jpegsize - 41000) / (width*height) + 2; // fits random data
quality_guess = (256 * jpegsize - 81920) / (width*height) - 8; // fits Nexuiz's map pictures
- quality_guess = bound(0, quality_guess, 90);
- quality = quality_guess + 10; // assume it can do 10 failed attempts
+ quality_guess = bound(0, quality_guess, 100);
+ quality = bound(0, quality_guess + sv_writepicture_quality.integer, 100); // assume it can do 10 failed attempts
while(!(result = JPEG_try_SaveImage_to_Buffer(&cinfo, jpegbuf, jpegsize, quality, width, height, data)))
{
return 0;
}
}
+ qjpeg_destroy_compress (&cinfo);
Con_DPrintf("JPEG_SaveImage_to_Buffer: guessed quality/size %d/%d, actually got %d/%d\n", quality_guess, (int)jpegsize, quality, (int)result);
return result;
+
+error_caught:
+ qjpeg_destroy_compress (&cinfo);
+ return 0;
}
typedef struct CompressedImageCacheItem
if(strlen(imagename) >= MAX_QPATH)
return; // can't add this
- i = Z_Malloc(sizeof(CompressedImageCacheItem));
+ i = (CompressedImageCacheItem*) Z_Malloc(sizeof(CompressedImageCacheItem));
strlcpy(i->imagename, imagename, sizeof(i->imagename));
i->maxsize = maxsize;
i->compressed = compressed;
unsigned char *imagedata, *newimagedata;
int maxPixelCount;
int components[3] = {2, 1, 0};
+ CompressedImageCacheItem *i;
+
+ JPEG_OpenLibrary (); // for now; LH had the idea of replacing this by a better format
// No DLL = no JPEGs
if (!jpeg_dll)
return false;
}
- CompressedImageCacheItem *i = CompressedImageCache_Find(imagename, maxsize);
+ i = CompressedImageCache_Find(imagename, maxsize);
if(i)
{
*size = i->compressed_size;
// find an appropriate size for somewhat okay compression
if(maxsize <= 768)
- maxPixelCount = 64 * 64;
+ maxPixelCount = 32 * 32;
else if(maxsize <= 1024)
- maxPixelCount = 128 * 128;
+ maxPixelCount = 64 * 64;
else if(maxsize <= 4096)
- maxPixelCount = 256 * 256;
+ maxPixelCount = 128 * 128;
else
- maxPixelCount = 512 * 512;
+ maxPixelCount = 256 * 256;
while(image_width * image_height > maxPixelCount)
{
Image_MipReduce32(imagedata, imagedata, &image_width, &image_height, &one, image_width/2, image_height/2, 1);
}
- newimagedata = Mem_Alloc(tempmempool, image_width * image_height * 3);
+ newimagedata = (unsigned char *) Mem_Alloc(tempmempool, image_width * image_height * 3);
// convert the image from BGRA to RGB
Image_CopyMux(newimagedata, imagedata, image_width, image_height, false, false, false, 3, 4, components);
// try to compress it to JPEG
*buf = Z_Malloc(maxsize);
- *size = JPEG_SaveImage_to_Buffer(*buf, maxsize, image_width, image_height, newimagedata);
+ *size = JPEG_SaveImage_to_Buffer((char *) *buf, maxsize, image_width, image_height, newimagedata);
if(!*size)
{
Z_Free(*buf);
projects / xonotic / darkplaces.git / blobdiff