From: pabs3 <pabs3@1f10aa63-cdf2-0310-b900-c93c546f37ac>
Date: Sat, 16 Aug 2008 02:02:21 +0000 (+0000)
Subject: Apply 2036627, fix Debian 487639: for mod_libav, allow the use of libswscale instead... 
X-Git-Url: https://git.pterodactylus.net/?a=commitdiff_plain;h=a46bd51d2a00f57d4e5335b77181d93e6b796ee9;p=synfig.git

Apply 2036627, fix Debian 487639: for mod_libav, allow the use of libswscale instead of the depreciated img_convert function. Patch by Gerco

git-svn-id: https://synfig.svn.sourceforge.net/svnroot/synfig@2031 1f10aa63-cdf2-0310-b900-c93c546f37ac
---

diff --git a/synfig-core/trunk/AUTHORS b/synfig-core/trunk/AUTHORS
index c04d6f4..8ad298b 100644
--- a/synfig-core/trunk/AUTHORS
+++ b/synfig-core/trunk/AUTHORS
@@ -13,6 +13,7 @@ Andreas Jochens
 Chris Moore (dooglus)
 Martin Michlmayr
 Carlos López González (genete)
+Gerco
 
 Translators:
 
diff --git a/synfig-core/trunk/configure.ac b/synfig-core/trunk/configure.ac
index 2e7e7b0..79ea10b 100644
--- a/synfig-core/trunk/configure.ac
+++ b/synfig-core/trunk/configure.ac
@@ -246,6 +246,33 @@ if test $with_libavcodec = "yes" ; then {
 } ; fi
 
 
+if test $with_libavcodec = "yes" ; then {
+	AC_ARG_WITH(libswscale,
+		[AS_HELP_STRING([--without-libswscale],
+			[disable support for libswscale (Default=auto)])],
+		[],
+		[with_libswscale="yes"]
+	)
+
+	if test $with_libswscale != "no" ; then {
+		AC_CHECK_LIB(swscale, sws_getContext, [], [echo no; with_libswscale="no"], [])
+	} ; fi
+
+	if test $with_libswscale = "yes" ; then {
+		LIBAVCODEC_LIBS="$LIBAVCODEC_LIBS -lswscale"
+		AM_CONDITIONAL(HAVE_LIBSWSCALE, true)
+    	} else {
+		AM_CONDITIONAL(HAVE_LIBSWSCALE, false)
+		AC_CHECK_LIB(avcodec, img_convert,
+			[AC_MSG_RESULT([ *** Using deprecated function img_convert.])],
+			[AC_MSG_FAILURE([Neither libswscale nor function img_convert was found.])],
+			[]
+		)
+	} ; fi
+} else {
+	AM_CONDITIONAL(HAVE_LIBSWSCALE, false)
+} ; fi
+
 
 # FREETYPE2 CHECK--------------------
 
@@ -647,6 +674,7 @@ ETL_CFLAGS -----------------------> $ETL_CFLAGS
 FreeType2 ------------------------> $with_freetype
 fontconfig -----------------------> $with_fontconfig
 libavcodec -----------------------> $with_libavcodec
+libswscale -----------------------> $with_libswscale
 vImage ---------------------------> $with_vimage
 ImageMagick ----------------------> $with_imagemagick
 Magick++ -------------------------> $with_magickpp
diff --git a/synfig-core/trunk/src/modules/mod_libavcodec/trgt_av.cpp b/synfig-core/trunk/src/modules/mod_libavcodec/trgt_av.cpp
index f1d9333..e067761 100644
--- a/synfig-core/trunk/src/modules/mod_libavcodec/trgt_av.cpp
+++ b/synfig-core/trunk/src/modules/mod_libavcodec/trgt_av.cpp
@@ -36,6 +36,9 @@
 extern "C"
 {
 #include <avformat.h>
+#ifdef HAVE_LIBSWSCALE
+#	include <ffmpeg/swscale.h>
+#endif
 }
 
 #include <synfig/general.h>
@@ -389,9 +392,23 @@ public:
 		if ( pict && context->pix_fmt != PIX_FMT_RGB24 )
 		{
 			//We're using RGBA at the moment, write custom conversion code later (get less accuracy errors)
+#ifdef HAVE_LIBSWSCALE
+			struct SwsContext* img_convert_ctx =
+				sws_getContext(context->width, context->height, PIX_FMT_RGB24,
+					context->width, context->height, context->pix_fmt,
+					SWS_BICUBIC, NULL, NULL, NULL);
+
+			sws_scale(img_convert_ctx, pict->data, pict->linesize, 
+                               
+				0, context->height, encodable->data,
+				encodable->linesize);
+
+			sws_freeContext (img_convert_ctx);
+#else
 			img_convert((AVPicture *)encodable, context->pix_fmt,
 						(AVPicture *)pict, PIX_FMT_RGB24,
 						context->width, context->height);
+#endif
 
 			pict = encodable;
 		}