[FFmpeg-trac] #985(avcodec:new): libutvideo wrapper compilation fails with invalid conversion, initialization errors

[FFmpeg]

#985: libutvideo wrapper compilation fails with invalid conversion,
initialization errors
---------------------------------+--------------------------------------
             Reporter:  qyot27   |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  avcodec  |                  Version:  git-master
             Keywords:           |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
---------------------------------+--------------------------------------
 When attempting to compile FFmpeg, errors were reached when it got to the
 libutvideo wrapper.  The same configure was fine until about a week ago,
 which coincides with some avcodec_open and avcodec_close related commits.
 I first saw it when using MinGW-w64 (i686-w64-mingw32-gcc/-g++ 4.6.1) to
 cross-compile under Ubuntu 11.10, but native compilation (also 4.6.1)
 encounters these initialization conversion errors too.

 (cross-compile):
 ./configure --prefix=$HOME/win32_build --cross-prefix=i686-w64-mingw32-
 --enable-gpl --enable-version3 --disable-w32threads --enable-memalign-hack
 --disable-decoder=utvideo --enable-libutvideo --disable-encoders
 --disable-muxers --disable-debug --disable-network --disable-hwaccels
 --disable-indevs --disable-outdevs --cpu=pentium3 --extra-
 cflags="-march=pentium3 -mtune=pentium3 -DPTW32_STATIC_LIB" --target-
 os=mingw32 --arch=x86

 (native):
 ./configure --prefix=$HOME/win32_build --enable-gpl --enable-version3
 --disable-decoder=utvideo --enable-libutvideo --disable-encoders
 --disable-muxers --disable-debug --disable-network --disable-hwaccels
 --disable-indevs --disable-outdevs --cpu=pentium3 --extra-
 cflags="-march=pentium3 -mtune=pentium3"


 The error received:

 {{{
 CXX     libavcodec/libutvideo.o
 cc1plus: warning: command line option ‘-Wdeclaration-after-statement’ is
 valid for C/ObjC but not for C++ [enabled by default]
 cc1plus: warning: command line option ‘-Wno-format-zero-length’ is valid
 for C/ObjC but not for C++ [enabled by default]
 cc1plus: warning: command line option ‘-Wno-pointer-sign’ is valid for
 C/ObjC but not for C++ [enabled by default]
 cc1plus: warning: command line option ‘-Wmissing-prototypes’ is valid for
 Ada/C/ObjC but not for C++ [enabled by default]
 cc1plus: warning: command line option ‘-Wno-pointer-to-int-cast’ is valid
 for C/ObjC but not for C++ [enabled by default]
 cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for
 Ada/C/ObjC but not for C++ [enabled by default]
 cc1plus: warning: command line option ‘-std=c99’ is valid for C/ObjC but
 not for C++ [enabled by default]
 libavcodec/libutvideo.cpp:72:18: warning: multi-character character
 constant [-Wmultichar]
 libavcodec/libutvideo.cpp:76:18: warning: multi-character character
 constant [-Wmultichar]
 libavcodec/libutvideo.cpp:205:1: error: cannot convert ‘AVMediaType’ to
 ‘const char*’ in initialization
 libavcodec/libutvideo.cpp:205:1: error: cannot convert ‘CodecID’ to
 ‘AVMediaType’ in initialization
 libavcodec/libutvideo.cpp:205:1: error: invalid conversion from ‘unsigned
 int’ to ‘CodecID’ [-fpermissive]
 libavcodec/libutvideo.cpp:205:1: error: invalid conversion from ‘int
 (*)(AVCodecContext*)’ to ‘int’ [-fpermissive]
 libavcodec/libutvideo.cpp:205:1: error: cannot convert ‘int
 (*)(AVCodecContext*)’ to ‘const PixelFormat*’ in initialization
 libavcodec/libutvideo.cpp:205:1: error: cannot convert ‘int
 (*)(AVCodecContext*, void*, int*, AVPacket*)’ to ‘const int*’ in
 initialization
 libavcodec/libutvideo.cpp:205:1: warning: converting to non-pointer type
 ‘uint8_t {aka unsigned char}’ from NULL [-Wconversion-null]
 libavcodec/libutvideo.cpp:205:1: error: invalid conversion from ‘const
 char*’ to ‘int’ [-fpermissive]
 make: *** [libavcodec/libutvideo.o] Error 1
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/985>
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