# GNU makefile for deriving the various video file versions.

EXRDIR := ../Cosmos_Laundromat_1-2k24p-HDR_P3PQ-exr

EXRS := $(wildcard $(EXRDIR)/*.exr)
PNGS := $(addsuffix .png,$(basename $(notdir $(EXRS))))

all: $(PNGS)

print:
	@echo $(EXRS)
	@echo $(PNGS)

$(PNGDIR)/SHA256SUMS.txt: $(PNGS)
	cd $(PNGDIR) && sha256sum $(PNGS) > $@

%.png: $(EXRDIR)/%.exr
	convert $< $@
	mv $@ $@.tmp
	pngcrush -q -srgb 0 -rem pHYs -rem vpAg \
	  -text b Title 'Cosmos Laudromat' \
	  -text b Author 'Blender Foundation | gooseberry.blender.org' \
	  -text b Date 2017 \
	  $@.tmp $@ && rm $@.tmp
	advdef -q -z4 $@

.PHONEY: all print