[FFmpeg-devel] [PATCH 1/2] osx: detect version of mac os

[Xidorn Quan]

---
 configure          |  2 ++
 libavutil/Makefile |  4 +++
 libavutil/osx.c    | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 libavutil/osx.h    | 34 +++++++++++++++++++++
 4 files changed, 127 insertions(+)
 create mode 100644 libavutil/osx.c
 create mode 100644 libavutil/osx.h

diff --git a/configure b/configure
index 0b95927..16d7b4e 100755
--- a/configure
+++ b/configure
@@ -1234,6 +1234,7 @@ HAVE_LIST="
     cmov
     cpuid
     cpunop
+    CoreFoundation_CoreFoundation_h
     dcbzl
     dev_bktr_ioctl_bt848_h
     dev_bktr_ioctl_meteor_h
@@ -3382,6 +3383,7 @@ check_header vdpau/vdpau_x11.h
 check_header windows.h
 check_header X11/extensions/XvMClib.h
 check_header asm/types.h
+check_header CoreFoundation/CoreFoundation.h
 
 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
diff --git a/libavutil/Makefile b/libavutil/Makefile
index ef1f658..88f1fb1 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -119,6 +119,10 @@ TESTPROGS = adler32                                                     \
             tree                                                        \
             xtea                                                        \
 
+HEADERS-$(HAVE_COREFOUNDATION_COREFOUNDATION_H) += osx.h
+
+OBJS-$(HAVE_COREFOUNDATION_COREFOUNDATION_H) += osx.o
+
 TESTPROGS-$(HAVE_LZO1X_999_COMPRESS) += lzo
 
 TOOLS = ffeval
diff --git a/libavutil/osx.c b/libavutil/osx.c
new file mode 100644
index 0000000..ea85c3c
--- /dev/null
+++ b/libavutil/osx.c
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2012, Xidorn Quan
+ *
+ * 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 <stdio.h>
+#include <CoreFoundation/CoreFoundation.h>
+
+#include "osx.h"
+#include "mem.h"
+
+int av_get_osx_version(int *major, int *minor, int *bugfix)
+{
+    static int s_major = 0, s_minor = 0, s_bugfix = 0;
+    CFURLRef versionPath;
+    CFDataRef data;
+    SInt32 errorCode;
+    CFDictionaryRef dict;
+    CFStringRef versionStr;
+    CFIndex length;
+    char *version;
+
+    if (s_major) {
+        *major = s_major;
+        *minor = s_minor;
+        *bugfix = s_bugfix;
+        return 0;
+    }
+
+    versionPath = CFURLCreateWithFileSystemPath(NULL,
+            CFSTR("/System/Library/CoreServices/SystemVersion.plist"),
+            kCFURLPOSIXPathStyle, false);
+    if (!CFURLCreateDataAndPropertiesFromResource(
+                NULL, versionPath, &data, NULL, NULL, &errorCode))
+        goto release_path;
+
+    dict = CFPropertyListCreateWithData(
+            NULL, data, kCFPropertyListImmutable, NULL, NULL);
+    if (!dict)
+        goto release_data;
+
+    versionStr = CFDictionaryGetValue(dict, CFSTR("ProductVersion"));
+    if (!versionStr)
+        goto release_dict;
+
+    length = CFStringGetLength(versionStr) + 1;
+    version = av_malloc(length);
+    if (!version)
+        goto release_dict;
+
+    if (!CFStringGetCString(versionStr,
+            version, length, kCFStringEncodingUTF8))
+        goto release_version;
+
+    sscanf(version, "%d.%d.%d", &s_major, &s_minor, &s_bugfix);
+    *major = s_major;
+    *minor = s_minor;
+    *bugfix = s_bugfix;
+    
+release_version:
+    av_free(version);
+
+release_dict:
+    CFRelease(dict);
+
+release_data:
+    CFRelease(data);
+
+release_path:
+    CFRelease(versionPath);
+    return s_major ? 0 : -1;
+}
diff --git a/libavutil/osx.h b/libavutil/osx.h
new file mode 100644
index 0000000..afd6c4e
--- /dev/null
+++ b/libavutil/osx.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2012, Xidorn Quan
+ *
+ * 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
+ */
+
+#ifndef AVUTIL_OSX_H
+#define AVUTIL_OSX_H
+
+/**
+ * Get version of Mac OS X
+ *
+ * @param major  pointer to store major version
+ * @param minor  pointer to store minor version
+ * @param bugfix pointer to store bugfix version
+ * @return       zero if succeed, -1 otherwise
+ */
+int av_get_osx_version(int *major, int *minor, int *bugfix);
+
+#endif /* AVUTIL_OSX_H */
-- 
1.7.11.4