[FFmpeg-cvslog] avutil/hwcontext_videotoolbox: Fix build with older SDKs

[Marvin Scholz]

ffmpeg | branch: master | Marvin Scholz <epirat07 at gmail.com> | Tue Jul  9 16:46:47 2024 +0200| [2fc37c42391a38bfe0aea248f2fe75c9033f98e5] | committer: Zhao Zhili

avutil/hwcontext_videotoolbox: Fix build with older SDKs

I've accidentally used API not available on the checked version.
Additionally check for the SDK to be new enough to even have the
CVImageBufferCreateColorSpaceFromAttachments API to not fail
the build.

Signed-off-by: Zhao Zhili <zhilizhao at tencent.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2fc37c42391a38bfe0aea248f2fe75c9033f98e5
---

 libavutil/hwcontext_videotoolbox.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/libavutil/hwcontext_videotoolbox.c b/libavutil/hwcontext_videotoolbox.c
index dd89edfa08..ab7556936d 100644
--- a/libavutil/hwcontext_videotoolbox.c
+++ b/libavutil/hwcontext_videotoolbox.c
@@ -588,13 +588,26 @@ static int vt_pixbuf_set_colorspace(void *log_ctx,
     } else
         CVBufferRemoveAttachment(pixbuf, kCVImageBufferGammaLevelKey);
 
-    if (__builtin_available(macOS 12.0, iOS 15.0, *)) {
-        CFDictionaryRef attachments = CVBufferCopyAttachments(pixbuf, kCVAttachmentMode_ShouldPropagate);
+#if (TARGET_OS_OSX && __MAC_OS_X_VERSION_MAX_ALLOWED >= 100800) || \
+    (TARGET_OS_IOS && __IPHONE_OS_VERSION_MAX_ALLOWED >= 100000)
+    if (__builtin_available(macOS 10.8, iOS 10, *)) {
+        CFDictionaryRef attachments = NULL;
+        if (__builtin_available(macOS 12.0, iOS 15.0, *))
+            attachments = CVBufferCopyAttachments(pixbuf, kCVAttachmentMode_ShouldPropagate);
+#if (TARGET_OS_OSX && __MAC_OS_X_VERSION_MIN_REQUIRED <= 120000) || \
+    (TARGET_OS_IOS && __IPHONE_OS_VERSION_MIN_REQUIRED <= 150000)
+        else {
+            CFDictionaryRef tmp = CVBufferGetAttachments(pixbuf, kCVAttachmentMode_ShouldPropagate);
+            if (tmp)
+                attachments = CFDictionaryCreateCopy(NULL, tmp);
+        }
+#endif
         if (attachments) {
             colorspace = CVImageBufferCreateColorSpaceFromAttachments(attachments);
             CFRelease(attachments);
         }
     }
+#endif
 
     if (colorspace) {
         CVBufferSetAttachment(pixbuf, kCVImageBufferCGColorSpaceKey,