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Add a few makefiles for various operations.

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This commit is contained in:
Philippe Pittoli 2025-01-30 05:25:22 +01:00
parent 988307e09e
commit 2114d03c4c
3 changed files with 76 additions and 0 deletions

24
mk/audio.mk Normal file
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# -prf "asendcmd=0.0 afftdn sn start,asendcmd=2 afftdn sn stop,afftdn=nr=10:nf=-40" \
SRC ?= tmp.opus
record-audio:
record-audio.sh $(SRC)
record-video:
record-video.sh $(SRC)
OUTPUT ?= tmp.opus
extract-audio:
ffmpeg -i $(SRC) $(OUTPUT)
normalize:
@# f: force overriding previous files
@# koa: keep original audio
@# pr: progress
@# -nt {ebu,rms,peak}: normalization type (default is "ebu", which is what we want)
@# -t TARGET_LEVEL: target db/LUFS level (default is "-23")
@# (for EBU) -lrt LOUDNESS_RANGE_TARGET: max audio range (default is "7")
@#
@# ffmpeg options
@# -c:a AUDIO_CODEC
ffmpeg-normalize -f -koa -pr -c:a libopus $(SRC)

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mk/random.mk Normal file
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APP ?= my-app
strace-pid:
@# strace an already running application
sudo strace -p $$(pidof $(APP))
strace:
@# --decode-fds = get file names
sudo strace --decode-fds -e desc,network $(APP)

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mk/zram.mk Normal file
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PDNSDIR ?= /tmp/zram
# Currently not working with alpine linux.
zram: mkdir zram-module zram-create zram-format zram-mount
unzram: zram-umount zram-free
btrzram: mkdir zram-module zram-create btrzram-format zram-mount
mkdir:; -mkdir $(PDNSDIR) 2>/dev/null
zram-module:; modprobe zram
zram-create:; zramctl --find --size 50000M -a zstd
# -b 2048 block size, cannot be used (mkfs.ext4 wants 4k blocks minimum)
# -N xxx nb of inodes
# -i xxx higher inode ratio
zram-format:; mkfs.ext4 -N 50000000 /dev/zram0
zram-mount:; mount /dev/zram0 $(PDNSDIR)
zram-umount:; -umount $(PDNSDIR)
zram-free:; -zramctl -r /dev/zram0
BTRFS_DIR ?= /tmp/btrfs
BTRFS_IMG ?= /tmp/btrfs.img
BTRFS_SIZ ?= 5000
BTRFS_SECTOR_SIZE ?= 4096
BTRFS_NODE_SIZE ?= 4096 # Minimal accepted value.
BTRFS_LOOP ?= /dev/loop100
BTRFS_COMP ?= zstd:8
# apt install btrfs-progs
btrfs: btrfs-mkdir btrfs-create btrfs-loop btrfs-format btrfs-mount btrfs-chown
btrfs-mkdir:; [ ! -d $(BTRFS_DIR) ] && mkdir $(BTRFS_DIR) 2>/dev/null || :
btrfs-create:
[ ! -f $(BTRFS_IMG) ] && su karchnu -c "dd if=/dev/zero of=$(BTRFS_IMG) bs=1M count=$(BTRFS_SIZ)" || :
btrfs-loop:; losetup --sector-size $(BTRFS_SECTOR_SIZE) $(BTRFS_LOOP) $(BTRFS_IMG)
btrfs-format:; mkfs.btrfs -s $(BTRFS_SECTOR_SIZE) -n $(BTRFS_NODE_SIZE) -L BTRDATA $(BTRFS_LOOP)
btrfs-mount:; mount -o compress=$(BTRFS_COMP) $(BTRFS_LOOP) $(BTRFS_DIR)
btrfs-chown:; chown karchnu $(BTRFS_DIR)
unbtrfs: btrfs-umount btrfs-unloop btrfs-rm
btrfs-unloop:; [ -b $(BTRFS_LOOP) ] && losetup -d $(BTRFS_LOOP) || :
btrfs-umount:; umount $(BTRFS_DIR)
btrfs-rm:; rm $(BTRFS_IMG)