Refactor sound examples, add new spustream example

1 files changed, 0 insertions, 112 deletions

diff --git a/examples/sound/spustream/convert_stream.py b/examples/sound/spustream/convert_stream.py
deleted file mode 100644
index 1b1696f..0000000
--- a/examples/sound/spustream/convert_stream.py
+++ /dev/null
@@ -1,112 +0,0 @@
-#!/usr/bin/env python3
-# Simple .VAG to STREAM.BIN interleaving tool
-# (C) 2021 spicyjpeg - MPL licensed
-
-import sys
-from warnings  import warn
-from struct    import Struct
-from itertools import zip_longest
-from argparse  import ArgumentParser, FileType
-
-VAG_HEADER  = Struct("> 4s I 4x 2I 12x 16s")
-VAG_MAGIC   = b"VAGp"
-SAMPLE_RATE = 44100
-BUFFER_SIZE = 26624 # (26624 / 16 * 28) / 44100 = 1.05 seconds
-ALIGN_SIZE  = 2048
-
-## Helpers
-
-def align(data, size):
-	chunks = (len(data) + size - 1) // size
-
-	return data.ljust(chunks * size, b"\x00")
-
-def set_loop_flag(data):
-	last_block    = bytearray(data[-16:])
-	last_block[1] = 0x03 # Jump to loop point + sustain
-
-	return data[:-16] + last_block
-
-## .VAG file reader
-
-def read_vag(_file, chunk_size):
-	with _file:
-		header = _file.read(VAG_HEADER.size)
-		(
-			magic,
-			version,
-			size,
-			sample_rate,
-			name
-		) = VAG_HEADER.unpack(header)
-
-		#if magic != VAG_MAGIC:
-			#raise RuntimeError(f"{_file.name} is not a valid .VAG file")
-		if sample_rate != SAMPLE_RATE:
-			warn(RuntimeWarning(f"{_file.name} sample rate is not {SAMPLE_RATE} Hz"))
-
-		for i in range(0, size, chunk_size):
-			chunk   = _file.read(chunk_size)
-
-			if len(chunk) % 16:
-				warn(RuntimeWarning(f"{_file.name} is not 16-byte aligned, trimming"))
-				chunk = chunk[0:len(chunk) // 16 * 16]
-
-			chunk = set_loop_flag(chunk)
-
-			yield chunk.ljust(chunk_size, b"\x00")
-
-## Main
-
-def get_args():
-	parser = ArgumentParser(
-		description = "Generates interleaved stream data from one or more .VAG files."
-	)
-	parser.add_argument(
-		"input_file",
-		nargs = "+",
-		type  = FileType("rb"),
-		help  = f"mono input files for each channel (must be {SAMPLE_RATE} Hz .VAG)"
-	)
-	parser.add_argument(
-		"-o", "--output",
-		type    = FileType("wb"),
-		default = "stream.bin",
-		help    = "where to output converted stream data (stream.bin by default)",
-		metavar = "file"
-	)
-	parser.add_argument(
-		"-b", "--buffer-size",
-		type    = int,
-		default = BUFFER_SIZE,
-		help    = f"size of each interleaved chunk (one per channel, default {BUFFER_SIZE})",
-		metavar = "bytes"
-	)
-	parser.add_argument(
-		"-a", "--align",
-		type    = int,
-		default = ALIGN_SIZE,
-		help    = f"align each group of chunks to N bytes (default {ALIGN_SIZE})",
-		metavar = "bytes"
-	)
-
-	return parser.parse_args()
-
-def main():
-	args = get_args()
-	if args.buffer_size % 16:
-		raise ValueError("buffer size must be a multiple of 16 bytes")
-
-	interleave = zip_longest(
-		*( read_vag(_file, args.buffer_size) for _file in args.input_file ),
-		fillvalue = b"\x00" * args.buffer_size
-	)
-
-	with args.output as _file:
-		for chunks in interleave:
-			data = b"".join(chunks)
-
-			_file.write(align(data, args.align))
-
-if __name__ == "__main__":
-	main()