tools/: Add gen-rc tool for generating Windows resource files

Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

tools/gen-rc

+#!/bin/sh
+#
+# Copyright (c) 2012 James Almer
+# Copyright (c) 2013 Tiancheng "Timothy" Gu
+#
+# This file is part of FFmpeg.
+#
+# FFmpeg 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 2.1 of the License, or (at your option) any later version.
+#
+# FFmpeg 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 FFmpeg; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+
+## Help
+die() {
+    cat <<EOF >&2
+This script is used to generate Windows resources file for the FFmpeg libraries.
+The output .rc file is to be compiled by windres(1). It is mainly useful for
+FFmpeg developers to tweak and regenerate all resources files at once.
+
+Usage: $0 <libname> <comment>
+
+The script will output the file to '<libname>/<libname-without-lib>res.rc'.
+
+Example: $0 libavcodec 'FFmpeg codecs library'
+EOF
+    exit 1
+}
+
+# Script to generate all:
+# (to remove prefix '# ' and add 'tools/' as prefix: sed -r 's/^.{2}/tools\//')
+# gen-rc libavutil     "FFmpeg utility library"
+# gen-rc libavcodec    "FFmpeg codec library"
+# gen-rc libavformat   "FFmpeg container format library"
+# gen-rc libavdevice   "FFmpeg device handling library"
+# gen-rc libavfilter   "FFmpeg audio/video filtering library"
+# gen-rc libpostproc   "FFmpeg postprocessing library"
+# gen-rc libavresample "Libav audio resampling library"
+# gen-rc libswscale    "FFmpeg image rescaling library"
+# gen-rc libswresample "FFmpeg audio resampling library"
+
+## Sanity checks and argument parsing
+if test $# -lt 2 || test $# -gt 3; then
+    die
+fi
+
+name=$1
+shortname=${name#lib}
+comment=$2
+capname=`echo $name | awk '{print toupper($0)}'`
+version=${capname}_VERSION
+
+mkdir -p "$name"
+output="$name/${shortname}res.rc"
+
+## REAL magic
+cat <<EOF > $output
+/*
+ * Windows resource file for $name
+ *
+ * Copyright (C) 2012 James Almer
+ * Copyright (C) 2013 Tiancheng "Timothy" Gu
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <windows.h>
+#include "$name/version.h"
+#include "libavutil/ffversion.h"
+#include "config.h"
+
+1 VERSIONINFO
+FILEVERSION     ${version}_MAJOR, ${version}_MINOR, ${version}_MICRO, 0
+PRODUCTVERSION  ${version}_MAJOR, ${version}_MINOR, ${version}_MICRO, 0
+FILEFLAGSMASK   VS_FFI_FILEFLAGSMASK
+FILEOS          VOS_NT_WINDOWS32
+FILETYPE        VFT_DLL
+{
+    BLOCK "StringFileInfo"
+    {
+        BLOCK "040904B0"
+        {
+            VALUE "CompanyName",      "FFmpeg Project"
+            VALUE "FileDescription",  "$comment"
+            VALUE "FileVersion",      AV_STRINGIFY($version)
+            VALUE "InternalName",     "$name"
+            VALUE "LegalCopyright",   "Copyright (C) 2000-" AV_STRINGIFY(CONFIG_THIS_YEAR) " FFmpeg Project"
+            VALUE "OriginalFilename", "$shortname" BUILDSUF "-" AV_STRINGIFY(${version}_MAJOR) SLIBSUF
+            VALUE "ProductName",      "FFmpeg"
+            VALUE "ProductVersion",   FFMPEG_VERSION
+        }
+    }
+
+    BLOCK "VarFileInfo"
+    {
+        VALUE "Translation", 0x0409, 0x04B0
+    }
+}
+EOF