X-Git-Url: http://git.xonotic.org/?a=blobdiff_plain;f=jpeg.c;h=44e53e4216074c20d62bd08952205923fc0a8343;hb=212a93f6f5c06d50d331d61e1792d12f11ca1595;hp=2220ccb32191742082c5f404bb349698226fd471;hpb=447d530cf6c1bce63662cd1d0705e9636cb1cdb1;p=xonotic%2Fdarkplaces.git

diff --git a/jpeg.c b/jpeg.c
index 2220ccb3..44e53e42 100644
--- a/jpeg.c
+++ b/jpeg.c
@@ -28,6 +28,7 @@
 #include "image_png.h"
 
 cvar_t sv_writepicture_quality = {CVAR_SAVE, "sv_writepicture_quality", "10", "WritePicture quality offset (higher means better quality, but slower)"};
+cvar_t r_texture_jpeg_fastpicmip = {CVAR_SAVE, "r_texture_jpeg_fastpicmip", "1", "perform gl_picmip during decompression for JPEG files (faster)"};
 
 // jboolean is unsigned char instead of int on Win32
 #ifdef WIN32
@@ -514,6 +515,12 @@ qboolean JPEG_OpenLibrary (void)
 
 	jpeg_tried_loading = true;
 
+#ifdef __ANDROID__
+	// loading the native Android libjpeg.so causes crashes
+	Con_Printf("Not opening libjpeg.so dynamically on Android - use LINK_TO_LIBJPEG instead if it is needed.\n");
+	return false;
+#endif
+
 	// Load the DLL
 	return Sys_LoadLibrary (dllnames, &jpeg_dll, jpegfuncs);
 #endif
@@ -595,17 +602,21 @@ JPEG_LoadImage
 Load a JPEG image into a BGRA buffer
 ====================
 */
-unsigned char* JPEG_LoadImage_BGRA (const unsigned char *f, int filesize)
+unsigned char* JPEG_LoadImage_BGRA (const unsigned char *f, int filesize, int *miplevel)
 {
 	struct jpeg_decompress_struct cinfo;
 	struct jpeg_error_mgr jerr;
 	unsigned char *image_buffer = NULL, *scanline = NULL;
 	unsigned int line;
+	int submip = 0;
 
 	// No DLL = no JPEGs
 	if (!jpeg_dll)
 		return NULL;
 
+	if(miplevel && r_texture_jpeg_fastpicmip.integer)
+		submip = bound(0, *miplevel, 3);
+
 	cinfo.err = qjpeg_std_error (&jerr);
 	qjpeg_create_decompress (&cinfo);
 	if(setjmp(error_in_jpeg))
@@ -614,12 +625,14 @@ unsigned char* JPEG_LoadImage_BGRA (const unsigned char *f, int filesize)
 	cinfo.err->error_exit = JPEG_ErrorExit;
 	JPEG_MemSrc (&cinfo, f, filesize);
 	qjpeg_read_header (&cinfo, TRUE);
+	cinfo.scale_num = 1;
+	cinfo.scale_denom = (1 << submip);
 	qjpeg_start_decompress (&cinfo);
 
-	image_width = cinfo.image_width;
-	image_height = cinfo.image_height;
+	image_width = cinfo.output_width;
+	image_height = cinfo.output_height;
 
-	if (image_width > 4096 || image_height > 4096 || image_width <= 0 || image_height <= 0)
+	if (image_width > 32768 || image_height > 32768 || image_width <= 0 || image_height <= 0)
 	{
 		Con_Printf("JPEG_LoadImage: invalid image size %ix%i\n", image_width, image_height);
 		return NULL;
@@ -679,11 +692,14 @@ unsigned char* JPEG_LoadImage_BGRA (const unsigned char *f, int filesize)
 
 		line++;
 	}
-	Mem_Free (scanline);
+	Mem_Free (scanline); scanline = NULL;
 
 	qjpeg_finish_decompress (&cinfo);
 	qjpeg_destroy_decompress (&cinfo);
 
+	if(miplevel)
+		*miplevel -= submip;
+
 	return image_buffer;
 
 error_caught:
@@ -954,8 +970,8 @@ size_t JPEG_SaveImage_to_Buffer (char *jpegbuf, size_t jpegsize, int width, int
 	}
 #endif
 
-	//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 = (int)((100 * jpegsize - 41000) / (width*height) + 2); // fits random data
+	quality_guess   = (int)((256 * jpegsize - 81920) / (width*height) - 8); // fits Nexuiz's/Xonotic's map pictures
 
 	quality_guess = bound(0, quality_guess, 100);
 	quality = bound(0, quality_guess + sv_writepicture_quality.integer, 100); // assume it can do 10 failed attempts
@@ -993,7 +1009,8 @@ static CompressedImageCacheItem *CompressedImageCache[COMPRESSEDIMAGECACHE_SIZE]
 
 static void CompressedImageCache_Add(const char *imagename, size_t maxsize, void *compressed, size_t compressed_size)
 {
-	const char *hashkey = va("%s:%d", imagename, (int) maxsize);
+	char vabuf[1024];
+	const char *hashkey = va(vabuf, sizeof(vabuf), "%s:%d", imagename, (int) maxsize);
 	int hashindex = CRC_Block((unsigned char *) hashkey, strlen(hashkey)) % COMPRESSEDIMAGECACHE_SIZE;
 	CompressedImageCacheItem *i;
 
@@ -1011,7 +1028,8 @@ static void CompressedImageCache_Add(const char *imagename, size_t maxsize, void
 
 static CompressedImageCacheItem *CompressedImageCache_Find(const char *imagename, size_t maxsize)
 {
-	const char *hashkey = va("%s:%d", imagename, (int) maxsize);
+	char vabuf[1024];
+	const char *hashkey = va(vabuf, sizeof(vabuf), "%s:%d", imagename, (int) maxsize);
 	int hashindex = CRC_Block((unsigned char *) hashkey, strlen(hashkey)) % COMPRESSEDIMAGECACHE_SIZE;
 	CompressedImageCacheItem *i = CompressedImageCache[hashindex];
 
@@ -1050,7 +1068,7 @@ qboolean Image_Compress(const char *imagename, size_t maxsize, void **buf, size_
 	}
 
 	// load the image
-	imagedata = loadimagepixelsbgra(imagename, true, false, false);
+	imagedata = loadimagepixelsbgra(imagename, true, false, false, NULL);
 	if(!imagedata)
 		return false;