2004-05-02 Lutz Mueller <lutz@users.sourceforge.net>

	* ycctoppm.[c,h]: New files on request of Micael Haardt.
	* Makefile.am


git-svn-id: https://svn.code.sf.net/p/gphoto/code/trunk/libgphoto2@7194 67ed7778-7388-44ab-90cf-0a291f65f57c

4 files changed, 124 insertions, 1 deletions

diff --git a/camlibs/casio/ChangeLog b/camlibs/casio/ChangeLog
index 2e76f34c9..a37e8d309 100644
--- a/camlibs/casio/ChangeLog
+++ b/camlibs/casio/ChangeLog
@@ -1,3 +1,8 @@
+2004-05-02  Lutz Mueller <lutz@users.sourceforge.net>
+
+	* ycctoppm.[c,h]: New files on request of Micael Haardt.
+	* Makefile.am
+
 2004-04-06  Lutz Mueller <lutz@users.sourceforge.net>
 
 	* cam2jpgtab.h: New.
diff --git a/camlibs/casio/Makefile.am b/camlibs/casio/Makefile.am
index 2b2ac0177..dcbdcd5ab 100644
--- a/camlibs/casio/Makefile.am
+++ b/camlibs/casio/Makefile.am
@@ -9,7 +9,8 @@ libgphoto2_casio_qv_la_SOURCES =		\
 	casio-qv.c				\
 	casio-qv-commands.c casio-qv-commands.h \
 	camtojpeg.c camtojpeg.h			\
-	cam2jpgtab.h jpegtab_f.h
+	cam2jpgtab.h jpegtab_f.h		\
+	ycctoppm.c ycctoppm.h
 
 libgphoto2_casio_qv_la_LDFLAGS = -module -avoid-version
 libgphoto2_casio_qv_la_LIBADD = $(top_builddir)/libgphoto2/libgphoto2.la
diff --git a/camlibs/casio/ycctoppm.c b/camlibs/casio/ycctoppm.c
new file mode 100644
index 000000000..0ba1c2e79
--- /dev/null
+++ b/camlibs/casio/ycctoppm.c
@@ -0,0 +1,90 @@
+/* ycctoppm.c
+ *
+ * Copyright (c) 2004 Michael Haardt
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <gphoto2-library.h>
+
+#include "ycctoppm.h"
+
+#define THUMBNAIL_WIDTH 52
+#define THUMBNAIL_HEIGHT 36
+
+#define RATE_H 2
+
+int QVycctoppm(const unsigned char *ycc, long int yccSize, int width, int height, int ratew, unsigned char **ppm, long int *ppmSize)
+{
+  char header[64];
+  size_t headerSize;
+  unsigned char *dst;
+  int x, y;
+  long cr, cb;
+  long L;
+  long r,g,b;
+  unsigned char *Y;
+  unsigned char *Cr;
+  unsigned char *Cb;
+
+  snprintf(header,sizeof(header),"P6\n%d %d\n255\n",width,height);
+  headerSize=strlen(header);
+
+  *ppm=malloc(*ppmSize=(headerSize+3*width*height));
+
+  dst=*ppm;
+  memcpy(dst,header,headerSize);  dst+=headerSize;
+
+  Y = ycc;
+  Cb = Y + (height * width);
+  Cr = Cb + (height / RATE_H) * (width / ratew);
+
+  for (y=0; y<height; ++y)
+  {
+    for (x=0; x<width; ++x)
+    {
+      L = Y[y * width + x] *  100000; 
+      cb = Cb[(y/RATE_H) * width/ratew + x/ratew];
+      if (cb > 127) cb = cb - 256;
+      cr = Cr[(y/RATE_H) * width/ratew + x/ratew];
+      if (cr > 127) cr = cr - 256;
+
+      r = L + 140200 * cr;
+      g = L - 34414 * cb - 71414 * cr;
+      b = L + 177200 * cb;
+
+      r = r / 100000;
+      g = g / 100000;
+      b = b / 100000;
+
+      if (r<0) r=0; else if (r>255) r=255;
+      if (g<0) g=0; else if (g>255) g=255;
+      if (b<0) b=0; else if (b>255) b=255;
+
+      *dst++ = r;
+      *dst++ = g;
+      *dst++ = b;
+    }
+  }
+
+  return GP_OK;
+}
diff --git a/camlibs/casio/ycctoppm.h b/camlibs/casio/ycctoppm.h
new file mode 100644
index 000000000..8e34ded4c
--- /dev/null
+++ b/camlibs/casio/ycctoppm.h
@@ -0,0 +1,27 @@
+/* ycctoppm.h
+ *
+ * Copyright (c) 2004 Michael Haardt
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifndef __CASIO_QV_YCCTOPPM_H__
+#define __CASIO_QV_YCCTOPPM_H__
+
+int QVycctoppm(const unsigned char *ycc, long int yccSize, int width, int height, int ratew, unsigned char **ppm, long int *ppmSize);
+
+#endif
+