X-Git-Url: http://git.asbjorn.biz/?a=blobdiff_plain;f=lib%2Fmodules%2Fswfbits.c;h=f761ae079c5121d8bf58ac5a6bb136ef0792de45;hb=feddb673cf8404df91270489b130a72c65195866;hp=05b21fb671222d62264fa4985f40fd84aac2824d;hpb=fc554a43712b76d16b41ec77dd311b4a78b1ef6b;p=swftools.git

diff --git a/lib/modules/swfbits.c b/lib/modules/swfbits.c
index 05b21fb..f761ae0 100644
--- a/lib/modules/swfbits.c
+++ b/lib/modules/swfbits.c
@@ -1,152 +1,762 @@
-/* swfbits.c
-
-   Bitmap functions (needs libjpeg) 
-
-   Extension module for the rfxswf library.
-   Part of the swftools package.
-
-   Copyright (c) 2000, 2001 Rainer Böhme <rfxswf@reflex-studio.de>
- 
-   This file is distributed under the GPL, see file COPYING for details 
-
-*/
-
-#ifdef _JPEGLIB_INCLUDED_
-#define OUTBUFFER_SIZE 32768
-
-typedef struct _JPEGDESTMGR
-{ struct jpeg_destination_mgr mgr;
-  LPTAG  t;
-  JOCTET * buffer;
-  struct jpeg_compress_struct cinfo;
-  struct jpeg_error_mgr jerr;
-} JPEGDESTMGR, * LPJPEGDESTMGR;
-
-// Destination manager callbacks
-
-void swf_init_destination(j_compress_ptr cinfo) 
-{ LPJPEGDESTMGR dmgr = (LPJPEGDESTMGR)cinfo->dest;
-  dmgr->buffer = (JOCTET*)malloc(OUTBUFFER_SIZE);
-  dmgr->mgr.next_output_byte = dmgr->buffer;
-  dmgr->mgr.free_in_buffer = OUTBUFFER_SIZE;
-}
-
-boolean swf_empty_output_buffer(j_compress_ptr cinfo)
-{ LPJPEGDESTMGR dmgr = (LPJPEGDESTMGR)cinfo->dest;
-  SetBlock(dmgr->t,
-           (U8*)dmgr->buffer,
-           OUTBUFFER_SIZE-dmgr->mgr.free_in_buffer);
-  dmgr->mgr.next_output_byte = dmgr->buffer;
-  dmgr->mgr.free_in_buffer = OUTBUFFER_SIZE;
-}
-
-void swf_term_destination(j_compress_ptr cinfo) 
-{ LPJPEGDESTMGR dmgr = (LPJPEGDESTMGR)cinfo->dest;
-  swf_empty_output_buffer(cinfo);
-  free(dmgr->buffer);
-  dmgr->mgr.free_in_buffer = 0;
-}
-
-LPJPEGBITS SetJPEGBitsStart(LPTAG t,int width,int height,int quality)
-{
-  LPJPEGDESTMGR jpeg;
-        
-  // redirect compression lib output to local SWF Tag structure
-  
-  jpeg = (LPJPEGDESTMGR)malloc(sizeof(JPEGDESTMGR));
-  if (!jpeg) return NULL;
-  
-  memset(jpeg,0x00,sizeof(JPEGDESTMGR));
-  jpeg->cinfo.err = jpeg_std_error(&jpeg->jerr);
-
-  jpeg_create_compress(&jpeg->cinfo);
-
-  jpeg->mgr.init_destination =  swf_init_destination;
-  jpeg->mgr.empty_output_buffer =       swf_empty_output_buffer;
-  jpeg->mgr.term_destination =  swf_term_destination;
-      
-  jpeg->t = t;
-
-  jpeg->cinfo.dest = (struct jpeg_destination_mgr *)jpeg;
-
-  // init compression
-  
-  jpeg->cinfo.image_width  = width;
-  jpeg->cinfo.image_height = height;
-  jpeg->cinfo.input_components = 3;
-  jpeg->cinfo.in_color_space = JCS_RGB;
-
-  jpeg_set_defaults(&jpeg->cinfo);
-  jpeg_set_quality(&jpeg->cinfo,quality,TRUE);
-
-  // write tables to SWF
-  
-  jpeg_write_tables(&jpeg->cinfo);
-
-  // compess image to SWF
-   
-  jpeg_suppress_tables(&jpeg->cinfo, TRUE);
-  jpeg_start_compress(&jpeg->cinfo, FALSE);
-
-  return (LPJPEGBITS)jpeg;
-}
-
-int SetJPEGBitsLines(LPJPEGBITS jpegbits,U8 ** data,int n)
-{ LPJPEGDESTMGR jpeg = (LPJPEGDESTMGR)jpegbits;
-  if (!jpeg) return -1;
-  jpeg_write_scanlines(&jpeg->cinfo,data,n);
-  return 0;
-}
-
-int SetJPEGBitsLine(LPJPEGBITS jpegbits,U8 * data)
-{ return SetJPEGBitsLines(jpegbits,&data,1);
-}
-
-int SetJPEGBitsFinish(LPJPEGBITS jpegbits)
-{ LPJPEGDESTMGR jpeg = (LPJPEGDESTMGR)jpegbits;
-  if (!jpeg) return -1;
-  jpeg_finish_compress(&jpeg->cinfo);
-  free(jpeg);
-  return 0;
-}
-
-int SetJPEGBits(LPTAG t,char * fname,int quality)
-{ struct jpeg_decompress_struct cinfo;
-  struct jpeg_error_mgr jerr;
-  LPJPEGBITS out;
-  FILE * f;
-  U8 * scanline;
-  
-  cinfo.err = jpeg_std_error(&jerr);
-  jpeg_create_decompress(&cinfo); 
-
-  if ((f=fopen(fname,"rb"))==NULL) return -1;
-  
-
-  jpeg_stdio_src(&cinfo,f);
-  jpeg_read_header(&cinfo, TRUE);
-  jpeg_start_decompress(&cinfo);
-
-  out = SetJPEGBitsStart(t,cinfo.output_width,cinfo.output_height,quality);
-  scanline = (U8*)malloc(4*cinfo.output_width);
-  
-  if (scanline)
-  { int y;
-    U8 * js = scanline;
-    for (y=0;y<cinfo.output_height;y++)
-    { jpeg_read_scanlines(&cinfo,&js,1);
-      SetJPEGBitsLines(out,(U8**)&js,1);
-    }
-  }
-
-  SetJPEGBitsFinish(out);
-  jpeg_finish_decompress(&cinfo);
-  fclose(f);
-  
-  return 0;
-}
-
-#undef OUTBUFFER_SIZE
-#endif
-
-// insert zlib/PNG functions here
+/* swfbits.c
+
+   Bitmap functions (needs libjpeg) 
+
+   Extension module for the rfxswf library.
+   Part of the swftools package.
+
+   Copyright (c) 2000, 2001 Rainer Böhme <rfxswf@reflex-studio.de>
+ 
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+#define OUTBUFFER_SIZE 0x8000
+
+#ifdef HAVE_JPEGLIB
+
+typedef struct _JPEGDESTMGR
+{ struct jpeg_destination_mgr mgr;
+  TAG *  t;
+  JOCTET * buffer;
+  struct jpeg_compress_struct cinfo;
+  struct jpeg_error_mgr jerr;
+} JPEGDESTMGR, * LPJPEGDESTMGR;
+
+// Destination manager callbacks
+
+static void RFXSWF_init_destination(j_compress_ptr cinfo) 
+{ JPEGDESTMGR * dmgr = (JPEGDESTMGR *)cinfo->dest;
+  dmgr->buffer = (JOCTET*)rfx_alloc(OUTBUFFER_SIZE);
+  dmgr->mgr.next_output_byte = dmgr->buffer;
+  dmgr->mgr.free_in_buffer = OUTBUFFER_SIZE;
+}
+
+static boolean RFXSWF_empty_output_buffer(j_compress_ptr cinfo)
+{ JPEGDESTMGR * dmgr = (JPEGDESTMGR *)cinfo->dest;
+  swf_SetBlock(dmgr->t,(U8*)dmgr->buffer,OUTBUFFER_SIZE);
+  dmgr->mgr.next_output_byte = dmgr->buffer;
+  dmgr->mgr.free_in_buffer = OUTBUFFER_SIZE;
+  return TRUE;
+}
+
+static void RFXSWF_term_destination(j_compress_ptr cinfo) 
+{ JPEGDESTMGR * dmgr = (JPEGDESTMGR *)cinfo->dest;
+  swf_SetBlock(dmgr->t,(U8*)dmgr->buffer,OUTBUFFER_SIZE-dmgr->mgr.free_in_buffer);
+  rfx_free(dmgr->buffer);
+  dmgr->mgr.free_in_buffer = 0;
+}
+
+JPEGBITS * swf_SetJPEGBitsStart(TAG * t,int width,int height,int quality)
+{
+  JPEGDESTMGR * jpeg;
+        
+  // redirect compression lib output to local SWF Tag structure
+  
+  jpeg = (JPEGDESTMGR *)rfx_calloc(sizeof(JPEGDESTMGR));
+  
+  jpeg->cinfo.err = jpeg_std_error(&jpeg->jerr);
+
+  jpeg_create_compress(&jpeg->cinfo);
+
+  jpeg->mgr.init_destination = RFXSWF_init_destination;
+  jpeg->mgr.empty_output_buffer = RFXSWF_empty_output_buffer;
+  jpeg->mgr.term_destination = RFXSWF_term_destination;
+      
+  jpeg->t = t;
+
+  jpeg->cinfo.dest = (struct jpeg_destination_mgr *)jpeg;
+
+  // init compression
+  
+  jpeg->cinfo.image_width  = width;
+  jpeg->cinfo.image_height = height;
+  jpeg->cinfo.input_components = 3;
+  jpeg->cinfo.in_color_space = JCS_RGB;
+
+  jpeg_set_defaults(&jpeg->cinfo);
+  jpeg_set_quality(&jpeg->cinfo,quality,TRUE);
+
+  // write tables to SWF
+  
+  jpeg_write_tables(&jpeg->cinfo);
+
+  // compess image to SWF
+   
+  jpeg_suppress_tables(&jpeg->cinfo, TRUE);
+  jpeg_start_compress(&jpeg->cinfo, FALSE);
+
+  return (JPEGBITS *)jpeg;
+}
+
+int swf_SetJPEGBitsLines(JPEGBITS * jpegbits,U8 ** data,int n)
+{ JPEGDESTMGR * jpeg = (JPEGDESTMGR *)jpegbits;
+  if (!jpeg) return -1;
+  jpeg_write_scanlines(&jpeg->cinfo,data,n);
+  return 0;
+}
+
+int swf_SetJPEGBitsLine(JPEGBITS * jpegbits,U8 * data)
+{ return swf_SetJPEGBitsLines(jpegbits,&data,1);
+}
+
+int swf_SetJPEGBitsFinish(JPEGBITS * jpegbits)
+{ JPEGDESTMGR * jpeg = (JPEGDESTMGR *)jpegbits;
+  if (!jpeg) return -1;
+  jpeg_finish_compress(&jpeg->cinfo);
+  rfx_free(jpeg);
+  return 0;
+}
+
+void swf_SetJPEGBits2(TAG * tag,U16 width,U16 height,RGBA* bitmap, int quality)
+{
+  JPEGBITS* jpeg;
+  int y;
+  jpeg = swf_SetJPEGBitsStart(tag,width,height,quality);
+  for (y=0;y<height;y++)
+  { U8 scanline[3*width];
+    int x,p = 0;
+    for (x=0;x<width;x++) 
+    { scanline[p++] = bitmap[width*y+x].r;
+      scanline[p++] = bitmap[width*y+x].g;
+      scanline[p++] = bitmap[width*y+x].b;
+    }
+    swf_SetJPEGBitsLine(jpeg,scanline);
+  }
+  swf_SetJPEGBitsFinish(jpeg);
+}
+
+void swf_GetJPEGSize(char * fname, int*width, int*height)
+{ struct jpeg_decompress_struct cinfo;
+  struct jpeg_error_mgr jerr;
+  FILE * fi;
+  *width = 0;
+  *height = 0;
+  cinfo.err = jpeg_std_error(&jerr);
+  jpeg_create_decompress(&cinfo); 
+  if ((fi=fopen(fname,"rb"))==NULL) {
+      fprintf(stderr, "rfxswf: file open error\n");
+      return;
+  }
+  jpeg_stdio_src(&cinfo, fi);
+  jpeg_read_header(&cinfo, TRUE);
+  *width = cinfo.image_width;
+  *height = cinfo.image_height;
+  jpeg_destroy_decompress(&cinfo);
+  fclose(fi);
+}
+
+int swf_SetJPEGBits(TAG * t,char * fname,int quality)
+{ struct jpeg_decompress_struct cinfo;
+  struct jpeg_error_mgr jerr;
+  JPEGBITS * out;
+  FILE * f;
+  U8 * scanline;
+  
+  cinfo.err = jpeg_std_error(&jerr);
+  jpeg_create_decompress(&cinfo); 
+
+  if ((f=fopen(fname,"rb"))==NULL) {
+      fprintf(stderr, "rfxswf: file open error\n");
+      return -1;
+  }
+
+  jpeg_stdio_src(&cinfo,f);
+  jpeg_read_header(&cinfo, TRUE);
+  jpeg_start_decompress(&cinfo);
+
+  out = swf_SetJPEGBitsStart(t,cinfo.output_width,cinfo.output_height,quality);
+  scanline = (U8*)rfx_alloc(4*cinfo.output_width);
+  
+  if (scanline) 
+  { int y;
+    U8 * js = scanline;
+    if(cinfo.out_color_space == JCS_GRAYSCALE) {
+	for (y=0;y<cinfo.output_height;y++)
+	{ int x;
+	  jpeg_read_scanlines(&cinfo,&js,1);
+	  for(x=cinfo.output_width-1;x>=0;x--) {
+	      js[x*3] = js[x*3+1] = js[x*3+2] = js[x];
+	  }
+	  swf_SetJPEGBitsLines(out,(U8**)&js,1);
+	}
+    }
+    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];
+	      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);
+  jpeg_finish_decompress(&cinfo);
+  fclose(f);
+  
+  return 0;
+}
+
+/*  jpeg_source_mgr functions */
+static void tag_init_source(struct jpeg_decompress_struct *cinfo)
+{
+    TAG*tag = (TAG*)cinfo->client_data;
+    swf_SetTagPos(tag, 2);
+    cinfo->src->bytes_in_buffer = 0;
+}
+static boolean tag_fill_input_buffer(struct jpeg_decompress_struct *cinfo)
+{
+    TAG*tag = (TAG*)cinfo->client_data;
+    if(tag->data[tag->pos+0] == 0xff &&
+       tag->data[tag->pos+1] == 0xd9 &&
+       tag->data[tag->pos+2] == 0xff &&
+       tag->data[tag->pos+3] == 0xd8) {
+        tag->pos += 4;
+    }
+    if(tag->pos >= tag->len) {
+        cinfo->src->next_input_byte = 0;
+        cinfo->src->bytes_in_buffer = 0;
+        return 0;
+    }
+    cinfo->src->next_input_byte = &tag->data[tag->pos];
+    cinfo->src->bytes_in_buffer = 1;//tag->len - tag->pos;
+    tag->pos += 1;
+    return 1;
+}
+static void tag_skip_input_data(struct jpeg_decompress_struct *cinfo, long count)
+{
+    TAG*tag = (TAG*)cinfo->client_data;
+    cinfo->src->next_input_byte = 0;
+    cinfo->src->bytes_in_buffer = 0;
+    tag->pos += count;
+}
+static boolean tag_resync_to_restart(struct jpeg_decompress_struct *cinfo, int desired)
+{
+    return jpeg_resync_to_restart(cinfo, desired);
+}
+static void tag_term_source(struct jpeg_decompress_struct *cinfo)
+{
+    TAG*tag = (TAG*)cinfo->client_data;
+}
+RGBA* swf_JPEG2TagToImage(TAG*tag, int*width, int*height)
+{
+    struct jpeg_decompress_struct cinfo;
+    struct jpeg_error_mgr jerr;
+    struct jpeg_source_mgr mgr;
+    RGBA * dest;
+    int y;
+    *width = 0;
+    *height = 0;
+
+    if(tag->id == ST_DEFINEBITSJPEG) {
+        fprintf(stderr, "rfxswf: extracting from definebitsjpeg not yet supported");
+        return 0;
+    }
+    if(tag->id == ST_DEFINEBITSJPEG3) {
+        fprintf(stderr, "rfxswf: extracting from definebitsjpeg3 not yet supported");
+        return 0;
+    }
+
+    cinfo.err = jpeg_std_error(&jerr);
+    jpeg_create_decompress(&cinfo); 
+
+    cinfo.client_data = (void*)tag;
+    cinfo.src = &mgr;
+    cinfo.src->init_source = tag_init_source;
+    cinfo.src->fill_input_buffer = tag_fill_input_buffer;
+    cinfo.src->skip_input_data = tag_skip_input_data;
+    cinfo.src->resync_to_restart = jpeg_resync_to_restart;
+    cinfo.src->term_source = tag_term_source;
+    cinfo.out_color_space = JCS_RGB;
+
+    jpeg_read_header(&cinfo, TRUE);
+    *width = cinfo.image_width;
+    *height = cinfo.image_height;
+    dest = rfx_alloc(sizeof(RGBA)*cinfo.image_width*cinfo.image_height);
+    
+    jpeg_start_decompress(&cinfo);
+    for (y=0;y<cinfo.output_height;y++) {
+        RGBA* line = &dest[y*cinfo.image_width];
+        U8* to = (U8*)line;
+        int x;
+        jpeg_read_scanlines(&cinfo,&to,1);
+        for(x=cinfo.output_width-1;x>=0;--x) {
+            int r = to[x*3+0];
+            int g = to[x*3+1];
+            int b = to[x*3+2];
+            line[x].r = r;
+            line[x].g = g;
+            line[x].b = b;
+            line[x].a = 255;
+        }
+    }
+
+    jpeg_finish_decompress(&cinfo);
+
+    jpeg_destroy_decompress(&cinfo);
+    return dest;
+}
+
+
+#endif // HAVE_JPEGLIB
+
+// Lossless compression texture based on zlib
+
+#ifdef HAVE_ZLIB
+
+int RFXSWF_deflate_wraper(TAG * t,z_stream * zs,boolean finish)
+{ 
+  U8*data=rfx_alloc(OUTBUFFER_SIZE);
+  zs->next_out = data;
+  zs->avail_out = OUTBUFFER_SIZE;
+  while (1)
+  { int status = deflate(zs,Z_NO_FLUSH);
+
+    if (status!=Z_OK)
+    {
+#ifdef DEBUG_RFXSWF
+      fprintf(stderr,"rfxswf: zlib compression error (%i)\n",status);
+#endif
+      rfx_free(data);
+      return status;
+    }
+
+    if (zs->next_out!=data)
+    { swf_SetBlock(t,data,zs->next_out - data);
+      zs->next_out = data;
+      zs->avail_out = OUTBUFFER_SIZE;
+    }
+    
+    if (zs->avail_in==0)
+      break;
+  }
+
+  if(!finish) {
+      rfx_free(data);
+      return 0;
+  }
+
+  while(1) {
+    int status = deflate(zs,Z_FINISH);
+    if (status!=Z_OK && status!=Z_STREAM_END)
+    {
+#ifdef DEBUG_RFXSWF
+      fprintf(stderr,"rfxswf: zlib compression error (%i)\n",status);
+#endif
+      rfx_free(data);
+      return status;
+    }
+
+    if (zs->next_out!=data)
+    { 
+      swf_SetBlock(t,data,zs->next_out - data);
+      zs->next_out = data;
+      zs->avail_out = OUTBUFFER_SIZE;
+    }
+
+    if(status == Z_STREAM_END)
+	break;
+  }
+  rfx_free(data);
+  return 0;
+}
+
+
+int swf_SetLosslessBits(TAG * t,U16 width,U16 height,void * bitmap,U8 bitmap_flags)
+{ int res = 0;
+  int bps;
+  
+  switch (bitmap_flags)
+  { case BMF_8BIT:
+      return swf_SetLosslessBitsIndexed(t,width,height,bitmap,NULL,256);
+    case BMF_16BIT:
+      bps = BYTES_PER_SCANLINE(sizeof(U16)*width);
+      break;
+    case BMF_32BIT:
+      bps = width*4;
+      break;
+    default:
+      fprintf(stderr, "rfxswf: unknown bitmap type %d\n", bitmap_flags);
+      return -1;
+  }
+
+  swf_SetU8(t,bitmap_flags);
+  swf_SetU16(t,width);
+  swf_SetU16(t,height);
+
+  { z_stream zs;
+      
+    memset(&zs,0x00,sizeof(z_stream));
+    zs.zalloc = Z_NULL;
+    zs.zfree  = Z_NULL;
+
+    if (deflateInit(&zs,Z_DEFAULT_COMPRESSION)==Z_OK)
+    { zs.avail_in         = bps*height;
+      zs.next_in          = bitmap;
+
+      if (RFXSWF_deflate_wraper(t,&zs,TRUE)<0) res = -3;
+      deflateEnd(&zs);
+      
+    } else res = -3; // zlib error
+  }
+  return res;
+}
+
+int swf_SetLosslessBitsIndexed(TAG * t,U16 width,U16 height,U8 * bitmap,RGBA * palette,U16 ncolors)
+{ RGBA * pal = palette;
+  int bps = BYTES_PER_SCANLINE(width);
+  int res = 0;
+    
+  if (!pal)     // create default palette for grayscale images
+  { int i;
+    pal = rfx_alloc(256*sizeof(RGBA));
+    for (i=0;i<256;i++) { pal[i].r = pal[i].g = pal[i].b = i; pal[i].a = 0xff;}
+    ncolors = 256;
+  }
+  
+  if ((ncolors<2)||(ncolors>256)||(!t)) {
+      fprintf(stderr, "rfxswf: unsupported number of colors: %d\n", ncolors);
+      return -1; // parameter error
+  }
+
+  swf_SetU8(t,BMF_8BIT);
+  swf_SetU16(t,width);
+  swf_SetU16(t,height);
+  swf_SetU8(t,ncolors-1); // number of pal entries
+
+  { z_stream zs;
+
+    memset(&zs,0x00,sizeof(z_stream));
+    zs.zalloc = Z_NULL;
+    zs.zfree  = Z_NULL;
+
+    if (deflateInit(&zs,Z_DEFAULT_COMPRESSION)==Z_OK)
+    { U8 * zpal;                    // compress palette
+      if ((zpal = rfx_alloc(ncolors*4)))
+      { U8 * pp = zpal;
+        int i;
+
+    /* be careful with ST_DEFINEBITSLOSSLESS2, because
+       the Flash player produces great bugs if you use too many
+       alpha colors in your palette. The only sensible result that
+       can be archeived is setting one color to r=0,b=0,g=0,a=0 to
+       make transparent parts in sprites. That's the cause why alpha
+       handling is implemented in lossless routines of rfxswf.
+
+       Indeed: I haven't understood yet how flash player handles
+       alpha values different from 0 and 0xff in lossless bitmaps...
+    */
+
+        if (swf_GetTagID(t)==ST_DEFINEBITSLOSSLESS2)  // have alpha channel?
+        { for (i=0;i<ncolors;i++)         
+          { pp[0] = pal[i].r;
+            pp[1] = pal[i].g;
+            pp[2] = pal[i].b;
+            pp[3] = pal[i].a;
+            pp+=4; 
+          }
+          zs.avail_in = 4*ncolors;
+        }
+        else
+        { for (i=0;i<ncolors;i++)         // pack RGBA structures to RGB 
+          { pp[0] = pal[i].r;
+            pp[1] = pal[i].g;
+            pp[2] = pal[i].b;
+            pp+=3;
+          }
+          zs.avail_in         = 3*ncolors;
+        }
+
+        zs.next_in          = zpal;
+
+        if (RFXSWF_deflate_wraper(t,&zs,FALSE)<0) res = -3;
+
+                                    // compress bitmap
+        zs.next_in = bitmap;
+        zs.avail_in = (bps*height*sizeof(U8));
+
+        if (RFXSWF_deflate_wraper(t,&zs,TRUE)<0) res = -3;
+
+        deflateEnd(&zs);
+
+        rfx_free(zpal);
+      } else res = -2; // memory error
+    } else res = -3; // zlib error
+  }
+  
+  if (!palette) rfx_free(pal);
+
+  return res;
+}
+
+int swf_SetLosslessBitsGrayscale(TAG * t,U16 width,U16 height,U8 * bitmap)
+{ return swf_SetLosslessBitsIndexed(t,width,height,bitmap,NULL,256);
+}
+
+RGBA* swf_DefineLosslessBitsTagToImage(TAG*tag, int*dwidth, int*dheight)
+{
+    int id,format,height, width, pos;
+    U32 datalen, datalen2;
+    int error;
+    int bpp=1;
+    int cols=0;
+    int pos2=0;
+    char alpha = tag->id == ST_DEFINEBITSLOSSLESS2;
+    int t,x,y;
+    RGBA*palette = 0;
+    U8*data,*data2;
+    RGBA*dest;
+    if(tag->id != ST_DEFINEBITSLOSSLESS &&
+       tag->id != ST_DEFINEBITSLOSSLESS2) {
+	fprintf(stderr, "rfxswf: Object %d is not a PNG picture!\n",GET16(tag->data));
+        return 0;
+    }
+    swf_SetTagPos(tag, 0);
+    id =swf_GetU16(tag);
+    format = swf_GetU8(tag);
+    if(format == 3) bpp = 8;
+    if(format == 4) bpp = 16;
+    if(format == 5) bpp = 32;
+    if(format!=3 && format!=5) {
+	if(format==4)
+	    fprintf(stderr, "rfxswf: Can't handle 16-bit palette images yet (image %d)\n",id);
+	else 
+	    fprintf(stderr, "rfxswf: Unknown image type %d in image %d\n", format, id);
+	return 0;
+    }
+    *dwidth = width = swf_GetU16(tag);
+    *dheight = height = swf_GetU16(tag);
+    
+    dest = rfx_alloc(sizeof(RGBA)*width*height);
+
+    if(format == 3) cols = swf_GetU8(tag) + 1;
+    else            cols = 0;
+
+    data = 0;
+    datalen = (width*height*bpp/8+cols*8);
+    do {
+	if(data)
+	    rfx_free(data);
+	datalen+=4096;
+	data = rfx_alloc(datalen);
+	error = uncompress (data, &datalen, &tag->data[tag->pos], tag->len-tag->pos);
+    } while(error == Z_BUF_ERROR);
+    if(error != Z_OK) {
+	fprintf(stderr, "rfxswf: Zlib error %d (image %d)\n", error, id);
+	return 0;
+    }
+    pos = 0;
+   
+    if(cols) {
+        palette = (RGBA*)rfx_alloc(cols*sizeof(RGBA));
+        for(t=0;t<cols;t++) {
+            palette[t].r = data[pos++];
+            palette[t].g = data[pos++];
+            palette[t].b = data[pos++];
+            if(alpha) {
+                palette[t].a = data[pos++];
+            }
+        }
+    }
+
+    for(y=0;y<height;y++) {
+       int srcwidth = width * (bpp/8);
+       if(bpp==32) {
+           if(!alpha) {
+               // 32 bit to 24 bit "conversion"
+               for(x=0;x<width;x++) {
+                   dest[pos2].r=data[pos+1];
+                   dest[pos2].g=data[pos+2];
+                   dest[pos2].b=data[pos+3];
+                   dest[pos2].a=255;
+                   pos2++;
+                   pos+=4; //ignore padding byte
+               }
+           } else {
+               for(x=0;x<width;x++) {
+                   dest[pos2].r=data[pos+1];
+                   dest[pos2].g=data[pos+2];
+                   dest[pos2].b=data[pos+3];
+                   dest[pos2].a=data[pos+0]; //alpha
+                   pos2++;
+                   pos+=4;
+               }
+           }
+       } else {
+           for(x=0;x<srcwidth;x++) {
+               dest[pos2]=palette[data[pos++]];
+               pos2++;
+           }
+       }
+       pos+=((srcwidth+3)&~3)-srcwidth; //align
+    }
+    if(palette)
+        rfx_free(palette);
+    rfx_free(data);
+    return dest;
+}
+
+#endif // HAVE_ZLIB
+
+#if defined(HAVE_ZLIB) && defined(HAVE_JPEGLIB)
+int swf_SetJPEGBits3(TAG * tag,U16 width,U16 height,RGBA* bitmap, int quality)
+{
+  JPEGBITS* jpeg;
+  int y;
+  int pos;
+  int res = 0;
+  U8 * data;
+  z_stream zs;
+  
+  pos = tag->len;
+  swf_SetU32(tag, 0); //placeholder
+  jpeg = swf_SetJPEGBitsStart(tag,width,height,quality);
+  for (y=0;y<height;y++)
+  { U8 scanline[3*width];
+    int x,p = 0;
+    for (x=0;x<width;x++) 
+    { scanline[p++] = bitmap[width*y+x].r;
+      scanline[p++] = bitmap[width*y+x].g;
+      scanline[p++] = bitmap[width*y+x].b;
+    }
+    swf_SetJPEGBitsLine(jpeg,scanline);
+  }
+  swf_SetJPEGBitsFinish(jpeg);
+  PUT32(&tag->data[pos], tag->len - pos - 4);
+
+  data=rfx_alloc(OUTBUFFER_SIZE);
+  memset(&zs,0x00,sizeof(z_stream));
+
+  if (deflateInit(&zs,Z_DEFAULT_COMPRESSION)!=Z_OK) {
+      fprintf(stderr, "rfxswf: zlib compression failed");
+      return -3;
+  }
+    
+  zs.next_out         = data;
+  zs.avail_out        = OUTBUFFER_SIZE;
+
+  for (y=0;y<height;y++)
+  { U8 scanline[width];
+    int x,p = 0;
+    for (x=0;x<width;x++) {
+      scanline[p++] = bitmap[width*y+x].a;
+    }
+    zs.avail_in         = width;
+    zs.next_in          = scanline;
+
+    while(1) {
+	if(deflate(&zs, Z_NO_FLUSH) != Z_OK) {
+	    fprintf(stderr, "rfxswf: zlib compression failed");
+	    return -4;
+	}
+	if(zs.next_out != data) {
+	    swf_SetBlock(tag, data, zs.next_out - data);
+	    zs.next_out = data;
+	    zs.avail_out = OUTBUFFER_SIZE;
+	}
+	if(!zs.avail_in) {
+	    break;
+	}
+    }
+  }
+
+  while(1) {
+      int ret = deflate(&zs, Z_FINISH);
+      if (ret != Z_OK &&
+	  ret != Z_STREAM_END)  {
+	  fprintf(stderr, "rfxswf: zlib compression failed");
+	  return -5;
+      }
+      if(zs.next_out != data) {
+	  swf_SetBlock(tag, data, zs.next_out - data);
+	  zs.next_out = data;
+	  zs.avail_out = OUTBUFFER_SIZE;
+      }
+      if (ret == Z_STREAM_END) {
+	  break;
+      }
+  }
+
+  deflateEnd(&zs);
+  rfx_free(data);
+  return 0;
+}
+#endif
+
+RGBA* swf_ExtractImage(TAG*tag, int*dwidth, int*dheight)
+{
+    RGBA*img;
+    if(tag->id == ST_DEFINEBITSJPEG ||
+       tag->id == ST_DEFINEBITSJPEG2 ||
+       tag->id == ST_DEFINEBITSJPEG3) {
+#ifdef HAVE_JPEGLIB
+        return swf_JPEG2TagToImage(tag, dwidth, dheight);
+#else
+        fprintf(stderr, "rfxswf: Error: No JPEG library compiled in");
+        return 0;
+#endif
+    }
+    if(tag->id == ST_DEFINEBITSLOSSLESS ||
+       tag->id == ST_DEFINEBITSLOSSLESS2) {
+#ifdef HAVE_ZLIB
+        return swf_DefineLosslessBitsTagToImage(tag, dwidth, dheight);
+#else
+        fprintf(stderr, "rfxswf: Error: No JPEG library compiled in");
+        return 0;
+#endif
+    }
+    fprintf(stderr, "rfxswf: Error: Invalid tag (%d, %s)", tag->id, swf_TagGetName(tag));
+    return 0;
+}
+
+#undef OUTBUFFER_SIZE
+