Save lossy formats at 90% quality by default

Author: slouken

include/SDL3_image/SDL_image.h

@@ -1853,7 +1853,7 @@ extern SDL_DECLSPEC SDL_Surface * SDLCALL IMG_ReadXPMFromArrayToRGB888(char **xp
  *
  * If the file already exists, it will be overwritten.
  *
- * For formats that accept a quality, a default quality of 75 will be used.
+ * For formats that accept a quality, a default quality of 90 will be used.
  *
  * \param surface the SDL surface to save.
  * \param file path on the filesystem to write new file to.
@@ -1881,7 +1881,7 @@ extern SDL_DECLSPEC bool SDLCALL IMG_Save(SDL_Surface *surface, const char *file
  * If `closeio` is true, `dst` will be closed before returning, whether this
  * function succeeds or not.
  *
- * For formats that accept a quality, a default quality of 75 will be used.
+ * For formats that accept a quality, a default quality of 90 will be used.
  *
  * \param surface the SDL surface to save.
  * \param dst the SDL_IOStream to save the image data to.

src/IMG.c

@@ -386,20 +386,20 @@ bool IMG_SaveTyped_IO(SDL_Surface *surface, SDL_IOStream *dst, bool closeio, con
     }
 
     if (SDL_strcasecmp(type, "avif") == 0) {
-        result = IMG_SaveAVIF_IO(surface, dst, false, 75);
+        result = IMG_SaveAVIF_IO(surface, dst, false, 90);
     } else if (SDL_strcasecmp(type, "bmp") == 0) {
         result = IMG_SaveBMP_IO(surface, dst, false);
     } else if (SDL_strcasecmp(type, "gif") == 0) {
         result = IMG_SaveGIF_IO(surface, dst, false);
     } else if (SDL_strcasecmp(type, "jpg") == 0 ||
                SDL_strcasecmp(type, "jpeg") == 0) {
-        result = IMG_SaveJPG_IO(surface, dst, false, 75);
+        result = IMG_SaveJPG_IO(surface, dst, false, 90);
     } else if (SDL_strcasecmp(type, "png") == 0) {
         result = IMG_SavePNG_IO(surface, dst, false);
     } else if (SDL_strcasecmp(type, "tga") == 0) {
         result = IMG_SaveTGA_IO(surface, dst, false);
     } else if (SDL_strcasecmp(type, "webp") == 0) {
-        result = IMG_SaveWEBP_IO(surface, dst, false, 75.0f);
+        result = IMG_SaveWEBP_IO(surface, dst, false, 90.0f);
     } else {
         result = SDL_SetError("Unsupported image format");
     }