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fix: preserve audio sample continuity across timestamp rounding

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This commit is contained in:
Valdemar Høgsvig Lorenzen
2026-10-10 01:26:26 +02:00
parent 8a89d88254
commit df2456f559
5 changed files with 137 additions and 4 deletions
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Makefile
+21 -2
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@@ -9,7 +9,7 @@ FRAMEWORKS := -framework AppKit -framework AudioToolbox -framework CoreAudio -fr
OBJECTS := .build/player.o .build/Output.o
APP := .build/Player.app
.PHONY: all run check
.PHONY: all run check check-audio
all: $(APP)/Contents/MacOS/Player $(APP)/Contents/Info.plist
.build:
@@ -35,10 +35,29 @@ run: all
.build/playback-check: Checks/playback.mm $(OBJECTS) Makefile
$(CXX) $(CXXFLAGS) -fobjc-arc $< $(OBJECTS) $(FF_LIBS) $(FRAMEWORKS) -o $@
check: .build/playback-check
check: .build/playback-check check-audio
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 -vn -c:a pcm_s16le .build/fixtures/audio.wav
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/playback-check .build/fixtures
.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 -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