fix -Wparentheses warnings.

[swftools.git] / lib / modules / swfbits.c

diff --git a/lib/modules/swfbits.c b/lib/modules/swfbits.c
index 1b311f8..cff2c9f 100644 (file)
--- a/lib/modules/swfbits.c
+++ b/lib/modules/swfbits.c
@@ -124,8 +124,6 @@ int swf_SetJPEGBits(TAG * t,char * fname,int quality)
 
   jpeg_stdio_src(&cinfo,f);
   jpeg_read_header(&cinfo, TRUE);
-  if(JPEG_LIB_VERSION>=62) /* jpeglib Version 6b is required for grayscale-> color conversion */
-    cinfo.out_color_space = JCS_RGB; //automatically convert grayscale images
   jpeg_start_decompress(&cinfo);
 
   out = swf_SetJPEGBitsStart(t,cinfo.output_width,cinfo.output_height,quality);
@@ -135,8 +133,6 @@ int swf_SetJPEGBits(TAG * t,char * fname,int quality)
   { int y;
     U8 * js = scanline;
     if(cinfo.out_color_space == JCS_GRAYSCALE) {
-       /* happens only if JPEG_LIB_VERSION above
-          was too small - let's do the conversion ourselves */
        for (y=0;y<cinfo.output_height;y++)
        { int x;
          jpeg_read_scanlines(&cinfo,&js,1);
@@ -146,12 +142,53 @@ int swf_SetJPEGBits(TAG * t,char * fname,int quality)
          swf_SetJPEGBitsLines(out,(U8**)&js,1);
        }
     }
-    else {
+    else if(cinfo.out_color_space == JCS_RGB) 
+    {
        for (y=0;y<cinfo.output_height;y++)
        { jpeg_read_scanlines(&cinfo,&js,1);
          swf_SetJPEGBitsLines(out,(U8**)&js,1);
        }
     }
+    else if(cinfo.out_color_space == JCS_YCCK) 
+    {
+       //FIXME
+       fprintf(stderr, "Error: Can't convert YCCK to RGB.\n");
+       return -1;
+    }
+    else if(cinfo.out_color_space == JCS_YCbCr) 
+    {
+       for (y=0;y<cinfo.output_height;y++) {
+         int x;
+         for(x=0;x<cinfo.output_width;x++) {
+             int y = js[x*3+0];
+             int u = js[x*3+1];
+             int v = js[x*3+1];
+             // untested:
+             js[x*3+0] = y + ((360*(v-128))>>8);
+             js[x*3+1] = y - ((88*(u-128)-183*(v-128))>>8);
+             js[x*3+2] = y + ((455 * (u-128))>>8);
+         }
+       }
+    }
+    else if(cinfo.out_color_space == JCS_CMYK) 
+    { 
+       for (y=0;y<cinfo.output_height;y++)
+       { int x;
+         jpeg_read_scanlines(&cinfo,&js,1);
+         /* This routine seems to work for now-
+            It's a mixture of 3 different
+            CMYK->RGB conversion routines I found in the
+            web. (which all produced garbage)
+            I'm happily accepting suggestions. (mk)*/
+         for(x=0;x<cinfo.output_width;x++) {
+               int white = 255 - js[x*4+3];
+               js[x*3+0] = white - ((js[x*4]*white)>>8);
+               js[x*3+1] = white - ((js[x*4+1]*white)>>8);
+               js[x*3+2] = white - ((js[x*4+2]*white)>>8);
+         }
+         swf_SetJPEGBitsLines(out,(U8**)&js,1);
+       }
+    }
   }
 
   swf_SetJPEGBitsFinish(out);
@@ -215,7 +252,7 @@ int swf_SetLosslessBits(TAG * t,U16 width,U16 height,void * bitmap,U8 bitmap_fla
   swf_SetU16(t,width);
   swf_SetU16(t,height);
 
-  if (data=malloc(OUTBUFFER_SIZE))
+  if ((data=malloc(OUTBUFFER_SIZE)))
   { z_stream zs;
       
     memset(&zs,0x00,sizeof(z_stream));
@@ -261,7 +298,7 @@ int swf_SetLosslessBitsIndexed(TAG * t,U16 width,U16 height,U8 * bitmap,RGBA * p
   swf_SetU16(t,height);
   swf_SetU8(t,ncolors-1); // number of pal entries
 
-  if (data=malloc(OUTBUFFER_SIZE))
+  if ((data=malloc(OUTBUFFER_SIZE)))
   { z_stream zs;
 
     memset(&zs,0x00,sizeof(z_stream));
@@ -270,7 +307,7 @@ int swf_SetLosslessBitsIndexed(TAG * t,U16 width,U16 height,U8 * bitmap,RGBA * p
 
     if (deflateInit(&zs,Z_DEFAULT_COMPRESSION)==Z_OK)
     { U8 * zpal;                    // compress palette
-      if (zpal = malloc(ncolors*4))
+      if ((zpal = malloc(ncolors*4)))
       { U8 * pp = zpal;
         int i;