GTEST_DIR ?= /usr/src/gtest

prefix = @prefix@
exec_prefix = @exec_prefix@
includedir = @includedir@
libdir = @libdir@
datarootdir = @datarootdir@
datadir = @datadir@
top_builddir = @top_builddir@
with_demo_app = @with_demo_app@

CC=@CC@
CXX=@CXX@
CXXFLAGS=-Wall @CXXFLAGS@ -I$(GTEST_DIR)/include @Eigen3_CFLAGS@ @GLEW_CFLAGS@
LDFLAGS=@GLEW_LIBS@ @SDL_LIBS@ -lpthread
DEMO_LDFLAGS=@SDL_image_LIBS@ -lrt -lpthread @libpng_LIBS@
LIBTOOL=@LIBTOOL@
RANLIB=ranlib
INSTALL=install
MKDIR=mkdir

ifeq ($(COVERAGE),1)
CXXFLAGS += -fprofile-arcs -ftest-coverage --coverage
LDFLAGS += -fprofile-arcs -ftest-coverage
LDLIBS += -lgcov
endif

DEMO_OBJS=demo.o

# Inputs.
TESTED_INPUTS = flat_input
TESTED_INPUTS += ycbcr_input

INPUTS = $(TESTED_INPUTS) $(UNTESTED_INPUTS)

# Effects.
TESTED_EFFECTS = lift_gamma_gain_effect
TESTED_EFFECTS += white_balance_effect
TESTED_EFFECTS += gamma_expansion_effect
TESTED_EFFECTS += gamma_compression_effect
TESTED_EFFECTS += colorspace_conversion_effect
TESTED_EFFECTS += alpha_multiplication_effect
TESTED_EFFECTS += alpha_division_effect
TESTED_EFFECTS += saturation_effect
TESTED_EFFECTS += blur_effect
TESTED_EFFECTS += diffusion_effect
TESTED_EFFECTS += glow_effect
TESTED_EFFECTS += unsharp_mask_effect
TESTED_EFFECTS += mix_effect
TESTED_EFFECTS += overlay_effect
TESTED_EFFECTS += padding_effect
TESTED_EFFECTS += resample_effect
TESTED_EFFECTS += dither_effect
TESTED_EFFECTS += deconvolution_sharpen_effect
TESTED_EFFECTS += fft_pass_effect

UNTESTED_EFFECTS = sandbox_effect
UNTESTED_EFFECTS += mirror_effect
UNTESTED_EFFECTS += resize_effect
UNTESTED_EFFECTS += vignette_effect
UNTESTED_EFFECTS += multiply_effect

EFFECTS = $(TESTED_EFFECTS) $(UNTESTED_EFFECTS)

# Unit tests.
TESTS=effect_chain_test $(TESTED_INPUTS:=_test) $(TESTED_EFFECTS:=_test)

LIB_OBJS=effect_util.o util.o widgets.o effect.o effect_chain.o init.o resource_pool.o $(INPUTS:=.o) $(EFFECTS:=.o)

# Default target:
all: libmovit.la $(TESTS)

ifeq ($(with_demo_app),yes)
all: demo
endif

# Google Test and other test library functions.
TEST_OBJS = gtest-all.o gtest_sdl_main.o test_util.o

gtest-all.o: $(GTEST_DIR)/src/gtest-all.cc
	$(CXX) -MMD $(CPPFLAGS) -I$(GTEST_DIR) $(CXXFLAGS) -c $< -o $@
gtest_sdl_main.o: gtest_sdl_main.cpp
	$(CXX) -MMD $(CPPFLAGS) -I$(GTEST_DIR) $(CXXFLAGS) -c $< -o $@

# Unit tests.
$(TESTS): %: %.o $(TEST_OBJS) libmovit.la
	$(LIBTOOL) --mode=link $(CXX) $(LDFLAGS) -o $@ $^ $(LDLIBS)

OBJS=$(DEMO_OBJS) $(LIB_OBJS) $(TEST_OBJS) $(TESTS:=.o)

# A small demo program.
demo: libmovit.la $(DEMO_OBJS)
	$(LIBTOOL) --mode=link $(CXX) $(LDFLAGS) -o demo $(DEMO_OBJS) libmovit.la $(LDLIBS) $(DEMO_LDLIBS)

# The library itself.
libmovit.la: $(LIB_OBJS:.o=.lo)
	$(LIBTOOL) --mode=link $(CXX) $(LDFLAGS) -rpath $(libdir) -o $@ $^ $(LDLIBS)

%.lo: %.cpp
	$(LIBTOOL) --mode=compile $(CXX) -MMD -MP $(CPPFLAGS) $(CXXFLAGS) -o $@ -c $<
%.o: %.cpp
	$(CXX) -MMD -MP $(CPPFLAGS) $(CXXFLAGS) -o $@ -c $<

DEPS=$(OBJS:.o=.d)
-include $(DEPS)

clean:
	$(LIBTOOL) --mode=clean $(RM) demo $(TESTS) libmovit.la $(OBJS) $(OBJS:.o=.lo)
	$(RM) $(OBJS:.o=.gcno) $(OBJS:.o=.gcda) $(DEPS) step*.dot chain*.frag
	$(RM) -r movit.info coverage/ .libs/

distclean: clean
	$(RM) Makefile movit.pc config.status config.log

check: $(TESTS)
	FAILED_TESTS=""; \
	for TEST in $(TESTS); do \
		./$$TEST || FAILED_TESTS="$$TEST $$FAILED_TESTS"; \
	done; \
	if [ "$$FAILED_TESTS" ]; then \
		echo Failed tests: $$FAILED_TESTS; \
		exit 1; \
	fi

# You need to build with COVERAGE=1 to use this target.
coverage: check
	lcov -d . -c -o movit.info
	lcov --remove movit.info '*_test.cpp' '*/test_util.{cpp,h}' -o movit.info
	genhtml -o coverage movit.info

HDRS = effect_chain.h effect_util.h effect.h input.h image_format.h init.h util.h defs.h resource_pool.h
HDRS += $(INPUTS:=.h)
HDRS += $(EFFECTS:=.h)

SHADERS = vs.vert header.frag footer.frag
SHADERS += $(INPUTS:=.frag)
SHADERS += $(EFFECTS:=.frag)
SHADERS += highlight_cutoff_effect.frag
SHADERS += overlay_matte_effect.frag

# These purposefully do not exist.
MISSING_SHADERS = diffusion_effect.frag glow_effect.frag unsharp_mask_effect.frag resize_effect.frag
SHADERS := $(filter-out $(MISSING_SHADERS),$(SHADERS))

install: libmovit.la
	$(LIBTOOL) --mode=install $(INSTALL) -m 0644 libmovit.la $(libdir)/
	$(MKDIR) -p $(includedir)/movit/
	$(INSTALL) -m 0644 $(HDRS) $(includedir)/movit/
	$(MKDIR) -p $(datadir)/movit/
	$(INSTALL) -m 0644 $(SHADERS) $(datadir)/movit/
	$(MKDIR) -p $(libdir)/pkgconfig/
	$(INSTALL) -m 644 movit.pc $(libdir)/pkgconfig/

.PHONY: coverage clean distclean check all install