CXX := xcrun clang++
SWIFT := xcrun swiftc
FFMPEG := libavformat libavcodec libavutil libswresample libswscale
FF_CFLAGS := $(shell pkg-config --cflags $(FFMPEG))
FF_LIBS := $(shell pkg-config --libs $(FFMPEG))
ARCH := $(shell uname -m)
CXXFLAGS := -std=c++20 -mmacosx-version-min=15.0 -O2 -g -Wall -Wextra -Wno-unused-parameter $(FF_CFLAGS)
FRAMEWORKS := -framework AppKit -framework AudioToolbox -framework CoreAudio -framework Metal -framework MetalKit -framework QuartzCore
OBJECTS := .build/player.o .build/Output.o
SWIFT_SOURCES := Sources/App/TerebiApp.swift Sources/App/CompactWindow.swift Sources/App/YouTubeResolver.swift
APP := .build/terebi.app

.PHONY: all run check check-fixtures check-audio check-window check-youtube check-network
all: $(APP)/Contents/MacOS/terebi $(APP)/Contents/Info.plist

.build:
	mkdir -p $@

.build/player.o: Sources/Core/player.cpp Sources/Core/player.h Sources/Core/player_macos.h Sources/Core/output.hpp Sources/Core/network_input.hpp Makefile | .build
	$(CXX) $(CXXFLAGS) -c $< -o $@

.build/Output.o: Sources/macOS/Output.mm Sources/Core/output.hpp Makefile | .build
	$(CXX) $(CXXFLAGS) -fobjc-arc -c $< -o $@

$(APP)/Contents/MacOS/terebi: $(SWIFT_SOURCES) $(OBJECTS) Makefile
	mkdir -p $(APP)/Contents/MacOS
	$(SWIFT) -target $(ARCH)-apple-macosx15.0 -swift-version 6 -parse-as-library -O -g -import-objc-header Sources/Core/player_macos.h $(SWIFT_SOURCES) $(OBJECTS) $(FF_LIBS) $(FRAMEWORKS) -lc++ -o $@

$(APP)/Contents/Info.plist: Resources/Info.plist
	mkdir -p $(APP)/Contents
	cp $< $@

run: all
	open $(APP)

.build/playback-check: Checks/playback.mm $(OBJECTS) Makefile
	$(CXX) $(CXXFLAGS) -fobjc-arc $< $(OBJECTS) $(FF_LIBS) $(FRAMEWORKS) -o $@

check: .build/playback-check check-fixtures check-audio check-window check-youtube check-network
	.build/playback-check .build/fixtures

check-fixtures:
	mkdir -p .build/fixtures
	ffmpeg -hide_banner -loglevel error -y -f lavfi -i testsrc2=size=320x180:rate=24 -f lavfi -i sine=frequency=440:sample_rate=44100 -t 4 -c:v mpeg4 -bf 2 -c:a aac .build/fixtures/av.mp4
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/av.mp4 -an -c:v copy .build/fixtures/video.mp4
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/av.mp4 -an -vf setsar=3/2 -c:v mpeg4 .build/fixtures/anamorphic.mp4
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/av.mp4 -vn -c:a pcm_s16le .build/fixtures/audio.wav
	# Literal frame PTS: 0,.1,.2,.3,.4,.65,.9,1.15,1.4,1.5,1.6,1.7; reordered B-frames across short GOPs.
	ffmpeg -hide_banner -loglevel error -y -f lavfi -i testsrc2=size=320x180:rate=10:duration=1.2 -f lavfi -i sine=frequency=440:sample_rate=44100:duration=2 -vf "settb=1/1000,setpts='if(lt(N,5),N*100,if(lt(N,9),400+(N-4)*250,1400+(N-8)*100))'" -fps_mode vfr -enc_time_base:v 1:1000 -c:v mpeg4 -g 4 -bf 2 -video_track_timescale 1000 -c:a aac .build/fixtures/frame-step.mp4
	ffmpeg -hide_banner -loglevel error -y -f lavfi -i testsrc2=size=160x90:rate=12 -t 1 -vf 'format=yuv420p10le,setparams=color_primaries=bt2020:color_trc=smpte2084:colorspace=bt2020nc' -c:v ffv1 .build/fixtures/hdr.mkv

.build/Output-check.o: Sources/macOS/Output.mm Sources/Core/output.hpp Makefile | .build
	$(CXX) $(CXXFLAGS) -fobjc-arc -DPLAYER_AUDIO_CHECK -c $< -o $@

.build/audio-continuity-check: Checks/audio-continuity.cpp .build/player.o .build/Output-check.o Makefile
	$(CXX) $(CXXFLAGS) $< .build/player.o .build/Output-check.o $(FF_LIBS) $(FRAMEWORKS) -o $@

check-audio: .build/audio-continuity-check
	mkdir -p .build/fixtures
	ffmpeg -hide_banner -loglevel error -y -f lavfi -i sine=frequency=440:sample_rate=44100 -t 2 -c:a pcm_s16le .build/fixtures/tone441.wav
	ffmpeg -hide_banner -loglevel error -y -f lavfi -i sine=frequency=440:sample_rate=48000 -t 2 -c:a pcm_s16le .build/fixtures/tone480.wav
	ffmpeg -hide_banner -loglevel error -y -f lavfi -i testsrc2=size=160x90:rate=24:duration=2 -i .build/fixtures/tone480.wav -c:v mpeg4 -g 48 -bf 2 -c:a copy .build/fixtures/tone-step.mov
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/tone441.wav -c:a copy .build/fixtures/tone441.mka
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/tone441.wav -c:a aac .build/fixtures/tone-aac.m4a
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/tone441.wav -af "asetpts='PTS+gte(T,1)*0.25/TB'" -c:a pcm_s16le .build/fixtures/tone-gap.mka
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/tone441.wav -ar 48000 -ac 2 -f f32le .build/fixtures/tone441.wav.f32
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/tone480.wav -ar 48000 -ac 2 -f f32le .build/fixtures/tone480.wav.f32
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/tone441.mka -ar 48000 -ac 2 -f f32le .build/fixtures/tone441.mka.f32
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/tone-aac.m4a -ar 48000 -ac 2 -f f32le .build/fixtures/tone-aac.m4a.f32
	.build/audio-continuity-check .build/fixtures

.build/compact-window-check: Checks/compact-window.swift Sources/App/CompactWindow.swift Makefile | .build
	$(SWIFT) -target $(ARCH)-apple-macosx15.0 -swift-version 6 -parse-as-library -O -g Checks/compact-window.swift Sources/App/CompactWindow.swift -framework AppKit -o $@

check-window: .build/compact-window-check
	.build/compact-window-check

.build/youtube-resolver-check: Checks/youtube-resolver.swift Sources/App/YouTubeResolver.swift Makefile | .build
	$(SWIFT) -target $(ARCH)-apple-macosx15.0 -swift-version 6 -parse-as-library -O -g Checks/youtube-resolver.swift Sources/App/YouTubeResolver.swift -framework Foundation -o $@

check-youtube: .build/youtube-resolver-check
	.build/youtube-resolver-check

.build/network-playback-check: Checks/network-playback.mm $(OBJECTS) Makefile
	$(CXX) $(CXXFLAGS) -fobjc-arc $< $(OBJECTS) $(FF_LIBS) $(FRAMEWORKS) -o $@

check-network: .build/network-playback-check check-fixtures
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/frame-step.mp4 -an -c:v copy .build/fixtures/frame-step-video.mp4
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/frame-step.mp4 -vn -c:a copy .build/fixtures/frame-step-audio.m4a
	ffmpeg -hide_banner -loglevel error -y -f lavfi -i testsrc2=size=320x180:rate=24 -f lavfi -i sine=frequency=440:sample_rate=44100 -t 30 -c:v mpeg4 -q:v 2 -bf 2 -c:a aac -movflags +faststart .build/fixtures/streaming.mp4
	ffmpeg -hide_banner -loglevel error -y -i .build/fixtures/av.mp4 -c:v libx264 -g 24 -keyint_min 24 -sc_threshold 0 -c:a aac -hls_time 1 -hls_playlist_type vod -hls_segment_filename .build/fixtures/network-vod-%d.ts .build/fixtures/network-vod.m3u8
	python3 Checks/streaming.py .build/network-playback-check .build/fixtures