TriM-Organization/Musicreater
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直接让MusicSave的函数放在主类里吧，更好用一些

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This commit is contained in:
EillesWan 2024-03-10 18:52:18 +08:00
parent f1ab2373b5
commit c17ff0e53a
2 changed files with 66 additions and 70 deletions
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1
Musicreater/__init__.py
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@ -29,7 +29,6 @@ __all__ = [
# 主要类
"MusicSequence",
"MidiConvert",
"MusicSave",
# 附加类
"SingleNote",
"MineNote",

135
Musicreater/main.py
View File

@ -212,6 +212,72 @@ class MusicSequence:
deviation_value=deviation,
)
@classmethod
def load_decode(
cls,
bytes_buffer_in: bytes,
):
"""从字节码导入音乐序列"""
group_1 = int.from_bytes(bytes_buffer_in[4:6], "big")
music_name_ = bytes_buffer_in[8 : (stt_index := 8 + (group_1 >> 10))].decode(
"utf-8"
)
channels_: MineNoteChannelType = empty_midi_channels(staff=[])
for channel_index in channels_.keys():
for i in range(
int.from_bytes(
bytes_buffer_in[stt_index : (stt_index := stt_index + 4)], "big"
)
):
try:
end_index = stt_index + 14 + (bytes_buffer_in[stt_index] >> 2)
channels_[channel_index].append(
MineNote.decode(bytes_buffer_in[stt_index:end_index])
)
stt_index = end_index
except:
print(channels_)
raise
return cls(
name_of_music=music_name_,
channels_of_notes=channels_,
minimum_volume_of_music=(group_1 & 0b1111111111) / 1000,
deviation_value=int.from_bytes(bytes_buffer_in[6:8], "big", signed=True)
/ 1000,
)
def encode_dump(
self,
) -> bytes:
"""将音乐序列转为二进制字节码"""
# 音乐名称长度 6 位 支持到 63
# 最小音量 minimum_volume 10 位 最大支持 1023 即三位小数
# 共 16 位 合 2 字节
# +++
# 总音调偏移 music_deviation 16 位 最大支持 -32768 ~ 32767 即 三位小数
# 共 16 位 合 2 字节
# +++
# 音乐名称 music_name 长度最多63 支持到 21 个中文字符 或 63 个西文字符
bytes_buffer = (
b"MSQ#"
+ (
(len(r := self.music_name.encode("utf-8")) << 10)
+ round(self.minimum_volume * 1000)
).to_bytes(2, "big")
+ round(self.music_deviation * 1000).to_bytes(2, "big", signed=True)
+ r
)
for channel_index, note_list in self.channels.items():
bytes_buffer += len(note_list).to_bytes(4, "big")
for note_ in note_list:
bytes_buffer += note_.encode()
return bytes_buffer
def set_min_volume(self, volume_value: int):
"""重新设置全曲最小音量"""
if volume_value > 1 or volume_value <= 0:
@ -1132,72 +1198,3 @@ class MidiConvert(MusicSequence):
dst.music_command_list = [i.copy() for i in self.music_command_list]
dst.progress_bar_command = [i.copy() for i in self.progress_bar_command]
return dst
class MusicSave(MusicSequence):
@classmethod
def load_decode(
cls,
bytes_buffer_in: bytes,
):
"""从字节码导入音乐序列"""
group_1 = int.from_bytes(bytes_buffer_in[4:6], "big")
music_name_ = bytes_buffer_in[8 : (stt_index := 8 + (group_1 >> 10))].decode(
"utf-8"
)
channels_: MineNoteChannelType = empty_midi_channels(staff=[])
for channel_index in channels_.keys():
for i in range(
int.from_bytes(
bytes_buffer_in[stt_index : (stt_index := stt_index + 4)], "big"
)
):
try:
end_index = stt_index + 14 + (bytes_buffer_in[stt_index] >> 2)
channels_[channel_index].append(
MineNote.decode(bytes_buffer_in[stt_index:end_index])
)
stt_index = end_index
except:
print(channels_)
raise
return cls(
name_of_music=music_name_,
channels_of_notes=channels_,
minimum_volume_of_music=(group_1 & 0b1111111111) / 1000,
deviation_value=int.from_bytes(bytes_buffer_in[6:8], "big", signed=True)
/ 1000,
)
def encode_dump(
self,
) -> bytes:
"""将音乐序列转为二进制字节码"""
# 音乐名称长度 6 位 支持到 63
# 最小音量 minimum_volume 10 位 最大支持 1023 即三位小数
# 共 16 位 合 2 字节
# +++
# 总音调偏移 music_deviation 16 位 最大支持 -32768 ~ 32767 即 三位小数
# 共 16 位 合 2 字节
# +++
# 音乐名称 music_name 长度最多63 支持到 21 个中文字符 或 63 个西文字符
bytes_buffer = (
b"MSQ#"
+ (
(len(r := self.music_name.encode("utf-8")) << 10)
+ round(self.minimum_volume * 1000)
).to_bytes(2, "big")
+ round(self.music_deviation * 1000).to_bytes(2, "big", signed=True)
+ r
)
for channel_index, note_list in self.channels.items():
bytes_buffer += len(note_list).to_bytes(4, "big")
for note_ in note_list:
bytes_buffer += note_.encode()
return bytes_buffer