Move pixel format conversion from uVideoRec to AVWrapper
This has several benefits, being in C-land allows us to better use
libav API and avoid mixing memory allocated from Pascal. Also the C
code for the conversion loop generated by GCC or Clang is probably more
optimized than by Freepascal. Finally it will simplify code in the
future if we are going to enable any other pixel format than yuv420p.
Change the coefficients to improve color accuracy during conversion.
#find package helpers
macro(find_package_or_fail _PKG_NAME)
find_package(${_PKG_NAME})
string(TOUPPER ${_PKG_NAME} _PKG_NAME_UP)
if(NOT ${_PKG_NAME_UP}_FOUND)
message(SEND_ERROR "Missing ${_PKG_NAME}! Please install it and rerun cmake.")
endif(NOT ${_PKG_NAME_UP}_FOUND)
endmacro(find_package_or_fail _PKG_NAME)
macro(find_package_or_disable _PKG_NAME _VAR_NAME)
find_package(${_PKG_NAME})
string(TOUPPER ${_PKG_NAME} _PKG_NAME_UP)
if(NOT ${_PKG_NAME_UP}_FOUND)
message(SEND_ERROR "Missing ${_PKG_NAME}! Rerun cmake with -D${_VAR_NAME}=1 to skip this error.")
endif(NOT ${_PKG_NAME_UP}_FOUND)
endmacro(find_package_or_disable _PKG_NAME _VAR_NAME)
macro(find_package_or_disable_msg _PKG_NAME _VAR_NAME _MSG)
if(NOT ${_VAR_NAME})
find_package_or_disable(${_PKG_NAME} ${_VAR_NAME})
else(NOT ${_VAR_NAME})
message(STATUS "${_PKG_NAME} disabled. ${_MSG}")
string(TOUPPER ${_PKG_NAME} _PKG_NAME_UP)
set(${_PKG_NAME_UP}_FOUND false)
endif(NOT ${_VAR_NAME})
endmacro(find_package_or_disable_msg _PKG_NAME _VAR_NAME _MSG)
#variable manipulation macros
macro(add_flag_append _VAR_NAME _FLAG)
set(${_VAR_NAME} "${${_VAR_NAME}} ${_FLAG}")
endmacro(add_flag_append _VAR_NAME _FLAG)
macro(add_flag_prepend _VAR_NAME _FLAG)
set(${_VAR_NAME} "${_FLAG} ${${_VAR_NAME}}")
endmacro(add_flag_prepend _VAR_NAME _FLAG)
macro(add_linker_flag _FLAG)
list(APPEND haskell_flags "-optl" "-Wl,${_FLAG}")
#executables
add_flag_append(CMAKE_C_LINK_FLAGS "-Wl,${_FLAG}")
add_flag_append(CMAKE_CXX_LINK_FLAGS "-Wl,${_FLAG}")
add_flag_append(CMAKE_Pascal_LINK_FLAGS "-k${_FLAG}")
#libraries
add_flag_append(CMAKE_SHARED_LIBRARY_C_FLAGS "-Wl,${_FLAG}")
add_flag_append(CMAKE_SHARED_LIBRARY_CXX_FLAGS "-Wl,${_FLAG}")
#CMAKE_SHARED_LIBRARY_Pascal_FLAGS is already set by CMAKE_Pascal_LINK_FLAGS
endmacro(add_linker_flag _FLAG)
#TODO: find_package_or_bundle