# ##############################################################################
# Copyright (C) Intel Corporation
#
# SPDX-License-Identifier: MIT
# ##############################################################################
cmake_minimum_required(VERSION 3.13.0)
project(hello-vpp)

# Default install places 64 bit runtimes in the environment, so we want to do a
# 64 bit build by default.
if(WIN32 AND CMAKE_SIZEOF_VOID_P EQUAL 4)
  set(CMAKE_LIBRARY_ARCHITECTURE x86)
endif()

if(WIN32)
  if(NOT DEFINED CMAKE_GENERATOR_PLATFORM)
    set(CMAKE_GENERATOR_PLATFORM
        x64
        CACHE STRING "")
    message(STATUS "Generator Platform set to ${CMAKE_GENERATOR_PLATFORM}")
  endif()
endif()

set(TARGET hello-vpp)
set(SOURCES src/hello-vpp.cpp)
set(CONTENTPATH ${CMAKE_CURRENT_SOURCE_DIR}/../../content)
set(RUNARGS
    -sw
    -i
    ${CONTENTPATH}/cars_320x240.i420
    -w
    320
    -h
    240)

# Set default build type to RelWithDebInfo if not specified
if(NOT CMAKE_BUILD_TYPE)
  message(
    STATUS "Default CMAKE_BUILD_TYPE not set using Release with Debug Info")
  set(CMAKE_BUILD_TYPE
      "RelWithDebInfo"
      CACHE
        STRING
        "Choose build type from: None Debug Release RelWithDebInfo MinSizeRel"
        FORCE)
endif()

add_executable(${TARGET} ${SOURCES})

if(MSVC)
  add_definitions(-D_CRT_SECURE_NO_WARNINGS)
  if(NOT DEFINED ENV{VSCMD_VER})
    set(CMAKE_MSVCIDE_RUN_PATH $ENV{PATH})
  endif()
endif()

find_package(VPL REQUIRED)
target_link_libraries(${TARGET} VPL::dispatcher)

if(UNIX)
  set(LIBVA_SUPPORT
      ON
      CACHE BOOL "Enable hardware support.")
  if(LIBVA_SUPPORT)
    find_package(PkgConfig REQUIRED)
    # note: pkg-config version for libva is *API* version
    pkg_check_modules(PKG_LIBVA IMPORTED_TARGET libva>=1.2)
    pkg_check_modules(PKG_LIBVA_DRM IMPORTED_TARGET libva-drm>=1.2)
    if(PKG_LIBVA_FOUND)
      target_compile_definitions(${TARGET} PUBLIC -DLIBVA_SUPPORT)
      set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
      set(THREADS_PREFER_PTHREAD_FLAG TRUE)
      find_package(Threads REQUIRED)
      target_link_libraries(${TARGET} PkgConfig::PKG_LIBVA
                            PkgConfig::PKG_LIBVA_DRM Threads::Threads)
      target_include_directories(${TARGET} PUBLIC ${PKG_LIBVA_INCLUDE_DIRS})
    else()
      message(
        SEND_ERROR
          "libva not found: set LIBVA_SUPPORT=OFF to build ${TARGET} without libva support"
      )
    endif()
  else()
    message(STATUS "Building ${TARGET} without hardware support")
  endif()
endif()

get_directory_property(has_parent PARENT_DIRECTORY)
if(NOT has_parent)
  # only make run target available for stand-alone build
  add_custom_target(run ${TARGET} ${RUNARGS})
endif()

# copy dependent dlls to target location
if(WIN32)
  if(${CMAKE_VERSION} VERSION_LESS "3.26")
    message(
      STATUS
        "CMake Version less than 3.26, unable to copy dependent DLLs to target location"
    )
  else()
    add_custom_command(
      TARGET ${TARGET}
      POST_BUILD
      COMMAND ${CMAKE_COMMAND} -E copy -t $<TARGET_FILE_DIR:${TARGET}>
              $<TARGET_RUNTIME_DLLS:${TARGET}>
      COMMAND_EXPAND_LISTS)
  endif()
endif()

include(CTest)
set(VPL_CONTENT_DIR
    ${CMAKE_CURRENT_SOURCE_DIR}/../../content
    CACHE PATH "Path to content.")
if(IMPL_ARG EQUAL -hw)
  set(content_file cars_320x240.nv12)
else()
  set(content_file cars_320x240.i420)
endif()
add_test(NAME ${TARGET}-test
         COMMAND ${TARGET} -i "${VPL_CONTENT_DIR}/${content_file}" -w 320 -h
                 240)