X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=lib%2Fmodules%2Fswfbits.c;h=1d9d4121147f5fa5f366a9ea773a90f94f752ea8;hb=b95b30dd649a5140cc095d085dbe2a23d0a91252;hp=f2a3f9bdc93f814ea87509f03e56c7cc743ffb21;hpb=8451385a196293f2d9ce889040e649c310ee6632;p=swftools.git

diff --git a/lib/modules/swfbits.c b/lib/modules/swfbits.c
index f2a3f9b..1d9d412 100644
--- a/lib/modules/swfbits.c
+++ b/lib/modules/swfbits.c
@@ -400,6 +400,119 @@ int swf_SetJPEGBits(TAG * t, char *fname, int quality)
     return 0;
 }
 
+typedef struct _JPEGFILEMGR {
+    struct jpeg_destination_mgr mgr;
+    JOCTET *buffer;
+    struct jpeg_compress_struct* cinfo;
+    struct jpeg_error_mgr* jerr;
+    FILE*fi;
+} JPEGFILEMGR;
+
+static void file_init_destination(j_compress_ptr cinfo) 
+{ 
+    JPEGFILEMGR*fmgr = (JPEGFILEMGR*)(cinfo->dest);
+    struct jpeg_destination_mgr*dmgr = &fmgr->mgr;
+
+    fmgr->buffer = (JOCTET*)rfx_alloc(OUTBUFFER_SIZE);
+    if(!fmgr->buffer) {
+	perror("malloc");
+	fprintf(stderr, "Out of memory!\n");
+	exit(1);
+    }
+
+    dmgr->next_output_byte = fmgr->buffer;
+    dmgr->free_in_buffer = OUTBUFFER_SIZE;
+}
+
+static boolean file_empty_output_buffer(j_compress_ptr cinfo)
+{ 
+    JPEGFILEMGR*fmgr = (JPEGFILEMGR*)(cinfo->dest);
+    struct jpeg_destination_mgr*dmgr = &fmgr->mgr;
+
+    if(fmgr->fi)
+	fwrite(fmgr->buffer, OUTBUFFER_SIZE, 1, fmgr->fi);
+
+    dmgr->next_output_byte = fmgr->buffer;
+    dmgr->free_in_buffer = OUTBUFFER_SIZE;
+    return 1;
+}
+
+static void file_term_destination(j_compress_ptr cinfo) 
+{ 
+    JPEGFILEMGR*fmgr = (JPEGFILEMGR*)(cinfo->dest);
+    struct jpeg_destination_mgr*dmgr = &fmgr->mgr;
+
+    if(fmgr->fi)
+        fwrite(fmgr->buffer, OUTBUFFER_SIZE-dmgr->free_in_buffer, 1, fmgr->fi);
+
+    rfx_free(fmgr->buffer);
+    fmgr->buffer = 0;
+    dmgr->free_in_buffer = 0;
+    dmgr->next_output_byte = 0;
+}
+
+void swf_SaveJPEG(char*filename, RGBA*pixels, int width, int height, int quality)
+{
+    JPEGFILEMGR fmgr;
+    struct jpeg_compress_struct cinfo;
+    struct jpeg_error_mgr jerr;
+    unsigned char*data2 = 0;
+    int y;
+
+    FILE*fi = fopen(filename, "wb");
+    if(!fi) {
+	char buf[256];
+	sprintf(buf, "rfxswf: Couldn't create %s", filename);
+	perror(buf);
+	return;
+    }
+    data2 = rfx_calloc(width*3);
+
+    memset(&cinfo, 0, sizeof(cinfo));
+    memset(&jerr, 0, sizeof(jerr));
+    memset(&fmgr, 0, sizeof(fmgr));
+    cinfo.err = jpeg_std_error(&jerr);
+    jpeg_create_compress(&cinfo);
+
+    fmgr.mgr.init_destination = file_init_destination;
+    fmgr.mgr.empty_output_buffer = file_empty_output_buffer;
+    fmgr.mgr.term_destination = file_term_destination;
+    fmgr.fi = fi;
+    fmgr.cinfo = &cinfo;
+    fmgr.jerr = &jerr;
+    cinfo.dest = (struct jpeg_destination_mgr*)&fmgr;
+
+    // init compression
+
+    cinfo.image_width  = width;
+    cinfo.image_height = height;
+    cinfo.input_components = 3;
+    cinfo.in_color_space = JCS_RGB;
+    jpeg_set_defaults(&cinfo);
+    cinfo.dct_method = JDCT_IFAST;
+    jpeg_set_quality(&cinfo,quality,TRUE);
+
+    //jpeg_write_tables(&cinfo);
+    //jpeg_suppress_tables(&cinfo, TRUE);
+    jpeg_start_compress(&cinfo, FALSE);
+
+    for(y=0;y<height;y++) {
+	int x;
+	RGBA*src = &pixels[y*width];
+	for(x=0;x<width;x++) {
+	    data2[x*3+0] = src[x].r;
+	    data2[x*3+1] = src[x].g;
+	    data2[x*3+2] = src[x].b;
+	}
+        jpeg_write_scanlines(&cinfo, &data2, 1);
+    }
+    rfx_free(data2);
+    jpeg_finish_compress(&cinfo);
+    jpeg_destroy_compress(&cinfo);
+
+    fclose(fi);
+}
+
 /*  jpeg_source_mgr functions */
 static void tag_init_source(struct jpeg_decompress_struct *cinfo)
 {
@@ -1178,21 +1291,62 @@ static scale_lookup_t**make_scale_lookup(int width, int newwidth)
     lblockx[newwidth] = p_x;
     return lblockx;
 }
+
+static void encodeMonochromeImage(RGBA*data, int width, int height, RGBA*colors)
+{
+    int t;
+    int len = width*height;
+
+    U32* img = (U32*)data;
+    U32 color1 = img[0];
+    U32 color2 = 0;
+    for(t=1;t<len;t++) {
+	if(img[t] != color1) {
+	    color2 = img[t];
+	    break;
+	}
+    }
+    *(U32*)&colors[0] = color1;
+    *(U32*)&colors[1] = color2;
+    for(t=0;t<len;t++) {
+	if(img[t] == color1) {
+	    img[t] = 0;
+	} else {
+	    img[t] = 0xffffffff;
+	}
+    }
+}
+
+static void decodeMonochromeImage(RGBA*data, int width, int height, RGBA*colors)
+{
+    int t;
+    int len = width*height;
+
+    for(t=0;t<len;t++) {
+	U32 m = data[t].r;
+	data[t].r = (colors[0].r * (255-m) + colors[1].r * m) >> 8;
+	data[t].g = (colors[0].g * (255-m) + colors[1].g * m) >> 8;
+	data[t].b = (colors[0].b * (255-m) + colors[1].b * m) >> 8;
+	data[t].a = (colors[0].a * (255-m) + colors[1].a * m) >> 8;
+    }
+}
+
 RGBA* swf_ImageScale(RGBA*data, int width, int height, int newwidth, int newheight)
 {
     int x,y;
     RGBA* newdata; 
     scale_lookup_t *p, **lblockx,**lblocky;
     rgba_int_t*tmpline;
+    int monochrome = 0;
+    RGBA monochrome_colors[2];
     
     if(newwidth<1 || newheight<1)
 	return 0;
 
-    /* this is bad because this scaler doesn't yet handle monochrome
-       images with 2 colors in a way that the final image hasn't more
-       than 256 colors */
-    if(swf_ImageGetNumberOfPaletteEntries2(data, width, height) == 2)
-	fprintf(stderr, "Warning: scaling monochrome image\n");
+    if(swf_ImageGetNumberOfPaletteEntries2(data, width, height) == 2) {
+	monochrome=1;
+	encodeMonochromeImage(data, width, height, monochrome_colors);
+    }
 
     tmpline = (rgba_int_t*)malloc(width*sizeof(rgba_int_t));
     newdata = (RGBA*)malloc(newwidth*newheight*sizeof(RGBA));
@@ -1245,6 +1399,10 @@ RGBA* swf_ImageScale(RGBA*data, int width, int height, int newwidth, int newheig
 	    destline++;
 	}
     }
+
+    if(monochrome)
+	decodeMonochromeImage(newdata, newwidth, newheight, monochrome_colors);
+
     free(tmpline);
     free(*lblockx);
     free(lblockx);
@@ -1253,3 +1411,4 @@ RGBA* swf_ImageScale(RGBA*data, int width, int height, int newwidth, int newheig
     return newdata;
 }
 
+