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* [Audio 1/?] Extract Samplebanks and Soundfonts to XML * Remove config.py and use the version yamls for addresses, other suggested changes * Adjust setup-audio * Remove some commented out dead code (MM review)
406 lines
15 KiB
Python
406 lines
15 KiB
Python
# SPDX-FileCopyrightText: © 2024 ZeldaRET
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# SPDX-License-Identifier: CC0-1.0
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#
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# This file implements reading various structures resident to the Audiobank files.
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# Additionally handles:
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# - Linking with finalized samples
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# - Writing xml elements representing these structures in soundfont xmls
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#
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import struct
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from enum import IntEnum
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from .audio_tables import AudioStorageMedium
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from .tuning import rate_from_tuning, pitch_names
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from .util import XMLWriter
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VADPCM_VERSTAMP = 1
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class AudioSampleCodec(IntEnum):
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CODEC_ADPCM = 0
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CODEC_S8 = 1
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CODEC_S16_INMEMORY = 2
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CODEC_SMALL_ADPCM = 3
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CODEC_REVERB = 4
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CODEC_S16 = 5
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class SoundFontSample: # SampleHeader ?
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"""
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typedef struct {
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/* 0x00 */ u32 codec : 4;
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/* 0x00 */ u32 medium : 2; // storage medium determines which of the two sample bank ids to use when relocating sampleAddr
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/* 0x00 */ u32 cached : 1;
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/* 0x00 */ u32 isRelocated : 1;
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/* 0x01 */ u32 size : 24;
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/* 0x04 */ u8* sampleAddr; // offset into the sample bank associated with this soundfont
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/* 0x08 */ AdpcmLoop* loop;
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/* 0x0C */ AdpcmBook* book;
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} SoundFontSample; // size = 0x10
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"""
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SIZE = 0x10
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def __init__(self, data):
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bits, self.sample_addr, self.loop, self.book = struct.unpack(">IIII", data[:0x10])
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self.codec = AudioSampleCodec((bits >> 28) & 0b1111)
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self.medium = AudioStorageMedium((bits >> 26) & 0b11)
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self.cached = bool((bits >> 25) & 1)
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self.is_relocated = bool((bits >> 24) & 1)
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self.size = (bits >> 0) & 0b111111111111111111111111
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assert self.book != 0
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assert self.loop != 0
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assert self.codec in [AudioSampleCodec.CODEC_ADPCM, AudioSampleCodec.CODEC_SMALL_ADPCM]
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assert self.medium == 0
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assert not self.is_relocated # Not relocated in ROM
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def to_xml(self, xml : XMLWriter, name : str, rate_override = None, note_override = None):
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# Example xml output:
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# <Sample Name="SAMPLE_NAME" SampleRate="32000" BaseNote="C4" IsDD="false" Cached="false">
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attrs = { "Name" : name }
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if rate_override is not None:
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attrs["SampleRate"] = rate_override
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if note_override is not None:
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attrs["BaseNote"] = note_override
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if self.medium != 0:
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attrs["IsDD"] = "true"
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if self.cached:
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attrs["Cached"] = str(self.cached).lower()
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xml.write_element("Sample", attrs)
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def __str__(self):
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out = "(SoundFontSample){\n"
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out += f" .codec = {self.codec.name}\n"
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out += f" .medium = {self.medium.name}\n"
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out += f" .cached = {self.cached}\n"
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out += f" .is_relocated = {self.is_relocated}\n"
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out += f" .size = 0x{self.size:X}\n"
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out += f" .sampleAddr = 0x{self.sample_addr:X}\n"
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out += f" .loop = 0x{self.loop:X}\n"
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out += f" .book = 0x{self.book:X}\n"
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out += "}\n"
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return out
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class AdpcmLoop:
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"""
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typedef struct {
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/* 0x00 */ u32 start;
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/* 0x04 */ u32 end;
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/* 0x08 */ u32 count;
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/* 0x0C */ u32 numFrames;
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/* 0x10 */ s16 state[16]; // only exists if count != 0. 8-byte aligned
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} AdpcmLoop; // size = 0x30 (or 0x10)
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"""
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def __init__(self, data):
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self.start, self.end, self.count, self.num_frames = struct.unpack(">IIII", data[:0x10])
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# We expect loops to be either "no loop" or "infinite", as these are all that vadpcm_enc could handle.
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assert self.count in (0,0xFFFFFFFF)
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if self.count != 0:
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self.state = tuple(s[0] for s in struct.iter_unpack(">h", data[0x10:0x30]))
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else:
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# A count of 0 indicates "no loop", but a loop structure is mandatory for all samples so something had to
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# be emitted. Ensure the start is at 0, later we will ensure that the end is at the last frame of the sample
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# once we have the sample data.
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assert self.start == 0
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self.state = tuple([0] * 16)
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assert len(self.state) == 16
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def serialize(self):
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"""
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Creates VADPCMLOOPS section data for aifc files
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"""
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NUM_LOOPS = 1
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return struct.pack(">HHIII16h",
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VADPCM_VERSTAMP, NUM_LOOPS,
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self.start, self.end, self.count,
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*self.state)
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def __eq__(self, other):
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if not isinstance(other, AdpcmLoop):
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return False
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other : AdpcmLoop
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start_matches = self.start == other.start
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end_matches = self.end == other.end
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count_matches = self.count == other.count
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# We don't check num_frames in loop equality since loops in different soundfonts referring to the same
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# sample data may not have this field filled out
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return start_matches and end_matches and count_matches and self.state == other.state
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def __str__(self):
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out = "(AdpcmLoop){\n"
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out += f" .start = {self.start},\n"
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out += f" .end = {self.end},\n"
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out += f" .count = {self.count},\n"
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out += f" .numFrames = {self.num_frames},\n"
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out += f" .state = {self.state},\n"
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out += "}\n"
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return out
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class AdpcmBook:
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"""
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typedef struct {
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/* 0x00 */ s32 order;
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/* 0x04 */ s32 npredictors;
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/* 0x08 */ s16 book[1]; // size 8 * order * npredictors. 8-byte aligned
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} AdpcmBook; // size >= 0x8
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"""
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def __init__(self, data):
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self.order, self.n_predictors = struct.unpack(">ii", data[:8])
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self.book = tuple(s[0] for s in struct.iter_unpack(">h", data[8:][:2 * 8 * self.order * self.n_predictors]))
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assert len(self.book) == 8 * self.order * self.n_predictors , (len(self.book), 8 * self.order * self.n_predictors)
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def serialize(self):
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header = struct.pack(">hhh", VADPCM_VERSTAMP, self.order, self.n_predictors)
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data = b"".join(struct.pack(">h", x) for x in self.book)
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return header + data
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def __eq__(self, other):
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if not isinstance(other, AdpcmBook):
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return False
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other : AdpcmBook
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order_matches = self.order == other.order
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npredictors_matches = self.n_predictors == other.n_predictors
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return order_matches and npredictors_matches and self.book == other.book
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def __str__(self):
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out = "(AdpcmBook){\n"
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out += f" .order = {self.order},\n"
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out += f" .npredictors = {self.n_predictors},\n"
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out += f" .book = {self.book},\n"
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out += "}\n"
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return out
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class SoundFontSound:
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"""
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typedef struct {
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/* 0x00 */ SoundFontSample* sample;
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/* 0x04 */ f32 tuning; // frequency scale factor
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} SoundFontSound; // size = 0x8
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"""
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SIZE = 8
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def __init__(self, index, data):
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self.index = index
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self.sample, self.tuning = struct.unpack(">If", data[:8])
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def finalize(self, sample_lookup_fn):
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from .audiotable import AudioTableSample
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sample = sample_lookup_fn(self.sample)
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if sample is None:
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return
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assert isinstance(sample, AudioTableSample)
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sample : AudioTableSample
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assert self.tuning in sample.tuning_map
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rate,note = sample.tuning_map[self.tuning]
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self.sample_rate = rate
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self.needs_rate_override = self.sample_rate != sample.sample_rate
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self.base_note = note
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self.needs_note_override = self.base_note != sample.base_note
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def __str__(self) -> str:
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out = "(SoundFontSound}{\n"
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out += f" .sample = 0x{self.sample:X}\n"
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out += f" .tuning = {self.tuning:.7f}f\n"
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out += "}\n"
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return out
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def to_xml(self, xml : XMLWriter, name : str, sample_name_func):
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if self.sample == 0 and self.tuning == 0:
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xml.write_element("Effect")
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else:
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attrs = {
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"Name" : name,
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"Sample" : sample_name_func(self.sample),
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}
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if self.needs_rate_override:
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attrs["SampleRate"] = self.sample_rate
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if self.needs_note_override:
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attrs["BaseNote"] = self.base_note
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xml.write_element("Effect", attrs)
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class Drum:
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"""
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typedef struct {
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/* 0x00 */ u8 releaseRate;
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/* 0x01 */ u8 pan;
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/* 0x02 */ u8 isRelocated;
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/* 0x04 */ SoundFontSound sound;
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/* 0x0C */ AdsrEnvelope* envelope;
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} Drum; // size = 0x10
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"""
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SIZE = 0x10
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def __init__(self, data):
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self.release_rate, self.pan, self.is_relocated, self.sample, self.tuning, self.envelope = \
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struct.unpack(">BBBxIfI", data[:0x10])
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assert self.is_relocated == 0
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def group_continuation(self, other):
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"""
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Determine if self is a continuation of the drum group containing other, the last drum added.
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"""
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# If there is no previous drum or the previous drum was an empty entry, always begin a new group
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if other is None:
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return False
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assert isinstance(other, Drum)
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# Check general agreement, if these attributes do not match it is certainly not part of the same group
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if self.sample == other.sample and self.pan == other.pan and self.envelope == other.envelope and \
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self.release_rate == other.release_rate:
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# If there is any intersection in the samplerates, assume these are in the same drum group
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samplerates1 = set(rate for _,rate in rate_from_tuning(self.tuning))
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samplerates2 = set(rate for _,rate in rate_from_tuning(other.tuning))
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return len(samplerates1.intersection(samplerates2)) != 0
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return False
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def __str__(self):
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out = "(Drum){\n"
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out += f" .releaseRate = {self.release_rate},\n"
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out += f" .pan = {self.pan},\n"
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out += f" .isRelocated = {self.is_relocated},\n"
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out += f" .sound.sample = 0x{self.sample:X},\n"
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out += f" .sound.tuning = {self.tuning:.7f}f,\n"
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out += f" .envelope = 0x{self.envelope:X},\n"
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out += "}\n"
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return out
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class Instrument:
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"""
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typedef struct {
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/* 0x00 */ u8 isRelocated;
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/* 0x01 */ u8 normalRangeLo;
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/* 0x02 */ u8 normalRangeHi;
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/* 0x03 */ u8 releaseRate;
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/* 0x04 */ AdsrEnvelope* envelope;
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/* 0x08 */ SoundFontSound lowNotesSound;
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/* 0x10 */ SoundFontSound normalNotesSound;
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/* 0x18 */ SoundFontSound highNotesSound;
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} Instrument; // size = 0x20
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"""
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SIZE = 0x20
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def __init__(self, data):
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self.is_relocated, self.normal_range_lo, self.normal_range_hi, self.release_rate, self.envelope, \
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self.low_notes_sample, self.low_notes_tuning, \
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self.normal_notes_sample, self.normal_notes_tuning, \
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self.high_notes_sample, self.high_notes_tuning = struct.unpack(">BBBBIIfIfIf", data[:0x20])
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self.program_number = None
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self.offset = None
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self.struct_index = None
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self.unused = False
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assert self.is_relocated == 0
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# Sample is either present or the split point is at the start/end
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assert not (self.low_notes_sample == 0 and self.low_notes_tuning == 0.0) or self.normal_range_lo == 0
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assert not (self.high_notes_sample == 0 and self.high_notes_tuning == 0.0) or self.normal_range_hi == 127
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def __str__(self):
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out = "(Instrument){\n"
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out += f" .isRelocated = {self.is_relocated},\n"
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out += f" .normalRangeLo = {self.normal_range_lo},\n"
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out += f" .normalRangeHi = {self.normal_range_hi},\n"
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out += f" .releaseRate = {self.release_rate},\n"
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out += f" .envelope = 0x{self.envelope:X},\n"
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out += f" .lowNotesSound.sample = {self.low_notes_sample},\n"
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out += f" .lowNotesSound.tuning = {self.low_notes_tuning},\n"
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out += f" .normalNotesSound.sample = {self.normal_notes_sample},\n"
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out += f" .normalNotesSound.tuning = {self.normal_notes_tuning},\n"
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out += f" .highNotesSound.sample = {self.high_notes_sample},\n"
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out += f" .highNotesSound.tuning = {self.high_notes_tuning},\n"
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out += "}\n"
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return out
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def finalize(self, sample_lookup_fn):
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from .audiotable import AudioTableSample
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self.sample_rate = [None] * 3
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self.base_note = [None] * 3
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self.needs_rate_override = [False] * 3
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self.needs_note_override = [False] * 3
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sample_offsets = (self.low_notes_sample, self.normal_notes_sample, self.high_notes_sample)
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tunings = (self.low_notes_tuning, self.normal_notes_tuning, self.high_notes_tuning)
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for i,(sample_offset,tuning) in enumerate(zip(sample_offsets, tunings)):
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sample = sample_lookup_fn(sample_offset)
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if sample is None:
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continue
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assert isinstance(sample, AudioTableSample)
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sample : AudioTableSample
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assert tuning in sample.tuning_map
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rate,note = sample.tuning_map[tuning]
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self.sample_rate[i] = rate
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self.needs_rate_override[i] = self.sample_rate[i] != sample.sample_rate
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self.base_note[i] = note
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self.needs_note_override[i] = self.base_note[i] != sample.base_note
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def to_xml(self, xml : XMLWriter, name : str, sample_names_func, envelope_name_func):
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attributes = {}
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if not self.unused:
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attributes["ProgramNumber"] = self.program_number
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attributes["Name"] = name
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# TODO release rate overrides?
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attributes.update({
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"Envelope" : envelope_name_func(self.envelope),
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#"Release" : self.release_rate,
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"Sample" : sample_names_func(self.normal_notes_sample),
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})
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if self.needs_rate_override[1]:
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attributes["SampleRate"] = self.sample_rate[1]
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if self.needs_note_override[1]:
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attributes["BaseNote"] = self.base_note[1]
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if self.normal_range_lo != 0:
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attributes["RangeLo"] = pitch_names[self.normal_range_lo]
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attributes["SampleLo"] = sample_names_func(self.low_notes_sample)
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if self.needs_rate_override[0]:
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attributes["SampleRateLo"] = self.sample_rate[0]
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if self.needs_note_override[0]:
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attributes["BaseNoteLo"] = self.base_note[0]
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if self.normal_range_hi != 127:
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attributes["RangeHi"] = pitch_names[self.normal_range_hi]
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attributes["SampleHi"] = sample_names_func(self.high_notes_sample)
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if self.needs_rate_override[2]:
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attributes["SampleRateHi"] = self.sample_rate[2]
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if self.needs_note_override[2]:
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attributes["BaseNoteHi"] = self.base_note[2]
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xml.write_element("Instrument" if not self.unused else "InstrumentUnused", attributes)
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