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use super::streamed_resource::StreamedResource;
use crate::{
object::{Value, parser::FromValue},
unityfs::UnityFS,
};
use anyhow::{Result, anyhow, bail};
use log::info;
use serde::Serialize;
use std::io::{Cursor, Read, Seek};
#[derive(Debug, Serialize)]
pub struct AudioClip {
pub resource: StreamedResource,
pub channels: i32,
pub ambisonic: bool,
pub bits_per_sample: i32,
pub compression_format: AudioCompressionFormat,
pub frequency: i32,
pub is_tracker_format: bool,
pub legacy_3d: bool,
pub length: f32,
pub name: String,
pub subsound_index: i32,
}
impl FromValue for AudioClip {
fn from_value(v: Value) -> Result<Self> {
let mut fields = v.as_class("AudioClip")?;
Ok(AudioClip {
resource: fields.field("m_Resource")?,
ambisonic: fields.field("m_Ambisonic")?,
bits_per_sample: fields.field("m_BitsPerSample")?,
compression_format: fields.field("m_CompressionFormat")?,
channels: fields.field("m_Channels")?,
frequency: fields.field("m_Frequency")?,
is_tracker_format: fields.field("m_IsTrackerFormat")?,
legacy_3d: fields.field("m_Legacy3D")?,
length: fields.field("m_Length")?,
name: fields.field("m_Name")?,
subsound_index: fields.field("m_SubsoundIndex")?,
})
}
}
impl AudioClip {
pub fn read_ogg(&self, fs: &UnityFS<impl Read + Seek>) -> Result<Vec<u8>> {
let data = self.resource.read(&fs)?;
match self.compression_format {
AudioCompressionFormat::Vorbis => {
info!("reading vorbis FMOD sound bank");
let bank = fsbex::Bank::new(Cursor::new(data))?;
assert_eq!(bank.format(), fsbex::AudioFormat::Vorbis);
assert_eq!(u32::from(bank.num_streams()), 1);
let stream = bank.into_iter().next().unwrap();
let mut buf = Cursor::new(Vec::new());
stream.write(&mut buf)?;
Ok(buf.into_inner())
}
x => todo!("audio format {x:?}"),
}
}
}
impl FromValue for AudioCompressionFormat {
fn from_value(v: Value) -> Result<Self> {
let x = v
.as_i32()
.ok_or(anyhow!("expected i32 AudioCompressionFormat"))?;
if x < 10 {
Ok(unsafe { std::mem::transmute(x) })
} else {
bail!("AudioCompressionFormat out of range")
}
}
}
#[allow(non_camel_case_types)]
#[repr(i32)]
#[derive(Debug, Serialize, PartialEq, Clone, Copy)]
pub enum AudioCompressionFormat {
PCM,
Vorbis,
ADPCM,
MP3,
PSMVAG,
HEVAG,
XMA,
AAC,
GCADPCM,
ATRAC9,
}
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