[FFmpeg-devel] [PATCH] AVFoundation: Add -pixel_format option

Hanspeter Niederstrasser niederstrasser at gmail.com
Wed Jul 9 13:29:47 CEST 2014

This broke compiling on OS X < 10.8 (I am on 10.7)

clang -I. -I/src/ffmpeg/ -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64
-fomit-frame-pointer -fPIC -pthread -I/sw/include -I/sw/include
-I/sw/include/bs2b -I/sw/include -I/sw/include/freetype2 -I/sw/include
-I/sw/include/opus -I/sw/include -I/sw/include
-I/sw/include/schroedinger-1.0 -I/sw/include/liboil-0.3 -I/sw/include
-I/sw/include -I/sw/include -I/sw/include -I/sw/include/SDL
-D_GNU_SOURCE=1 -D_THREAD_SAFE -g -Wdeclaration-after-statement -Wall
-Wdisabled-optimization -Wpointer-arith -Wredundant-decls
-Wwrite-strings -Wtype-limits -Wundef -Wmissing-prototypes
-Wno-pointer-to-int-cast -Wstrict-prototypes -Wempty-body
-Wno-parentheses -Wno-switch -Wno-format-zero-length -Wno-pointer-sign
-O3 -fno-math-errno -fno-signed-zeros -Qunused-arguments
-Werror=implicit-function-declaration -Werror=missing-prototypes
-Werror=return-type  -MMD -MF libavdevice/avfoundation.d -MT
libavdevice/avfoundation.o -c -o libavdevice/avfoundation.o
/src/ffmpeg/libavdevice/avfoundation.m:73:32: error: use of undeclared
identifier 'kCVPixelFormatType_OneComponent8'
    { AV_PIX_FMT_GRAY8,        kCVPixelFormatType_OneComponent8 },
1 error generated.

says that kCVPixelFormatType_OneComponent8 is 10.8+ only.

Possible configure patch (it successfully deactivates the avfoundation
indev on 10.7, but I get lots of general C errors in config.log rather
than just undeclared kCVPixelFormatType_OneComponent8 like I was
expecting) ?:

8< ---- 8< ---- 8< ---- 8< ----

diff --git a/configure b/configure
index e20bf8e..395fb7d 100755
--- a/configure
+++ b/configure
@@ -4695,7 +4695,7 @@ for func in $MATH_FUNCS; do

 # these are off by default, so fail if requested and not available
-enabled avfoundation_indev && { check_header_oc
AVFoundation/AVFoundation.h || disable avfoundation_indev; }
+enabled avfoundation_indev && { check_lib2
AVFoundation/AVFoundation.h kCVPixelFormatType_OneComponent8
-Wl,-framework,AVFoundation || disable avfoundation_indev; }
 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
                                die "ERROR: LoadLibrary/dlopen not
found for avisynth"; }

8< ---- 8< ---- 8< ---- 8< ----
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