#
# Copyright (c) 2021, Alliance for Open Media. All rights reserved
#
# This source code is subject to the terms of the BSD 3-Clause Clear License and
# the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
# License was not distributed with this source code in the LICENSE file, you can
# obtain it at aomedia.org/license/software-license/bsd-3-c-c/.  If the Alliance
# for Open Media Patent License 1.0 was not distributed with this source code in
# the PATENTS file, you can obtain it at aomedia.org/license/patent-license/.
#
if(AOM_AOM_SCALE_AOM_SCALE_CMAKE_)
  return()
endif() # AOM_AOM_SCALE_AOM_SCALE_CMAKE_
set(AOM_AOM_SCALE_AOM_SCALE_CMAKE_ 1)

list(
  APPEND
  AOM_SCALE_SOURCES
  "${AOM_ROOT}/aom_scale/aom_scale.h"
  "${AOM_ROOT}/aom_scale/generic/aom_scale.c"
  "${AOM_ROOT}/aom_scale/generic/gen_scalers.c"
  "${AOM_ROOT}/aom_scale/generic/yv12config.c"
  "${AOM_ROOT}/aom_scale/generic/yv12extend.c"
  "${AOM_ROOT}/aom_scale/yv12config.h")

list(APPEND AOM_SCALE_INTRIN_DSPR2
     "${AOM_ROOT}/aom_scale/mips/dspr2/yv12extend_dspr2.c")

# Creates the aom_scale build target and makes libaom depend on it. The libaom
# target must exist before this function is called.
function(setup_aom_scale_targets)
  add_library(aom_scale OBJECT ${AOM_SCALE_SOURCES})
  target_sources(aom PRIVATE $<TARGET_OBJECTS:aom_scale>)

  if(HAVE_DSPR2)
    add_intrinsics_object_library("" "dspr2" "aom_scale"
                                  "AOM_SCALE_INTRIN_DSPR2")
  endif()

  target_sources(aom PRIVATE $<TARGET_OBJECTS:aom_scale>)
  if(BUILD_SHARED_LIBS)
    target_sources(aom_static PRIVATE $<TARGET_OBJECTS:aom_scale>)
  endif()

  # Pass the new lib targets up to the parent scope instance of
  # $AOM_LIB_TARGETS.
  set(AOM_LIB_TARGETS
      ${AOM_LIB_TARGETS} aom_scale
      PARENT_SCOPE)
endfunction()