diff options
Diffstat (limited to 'src/flac/mod.rs')
| -rw-r--r-- | src/flac/mod.rs | 311 |
1 files changed, 0 insertions, 311 deletions
diff --git a/src/flac/mod.rs b/src/flac/mod.rs deleted file mode 100644 index 7a79e44..0000000 --- a/src/flac/mod.rs +++ /dev/null @@ -1,311 +0,0 @@ -mod decoder; - -use anyhow::{Result, anyhow}; -use flac_bound::{FlacEncoder, WriteWrapper}; -/* use md5::Digest; */ -use metaflac::Tag; -use std::{fs::File, path::Path}; - -use crate::flac::decoder::FlacDecoder; - -pub const CURRENT_VENDOR: &str = "reference libFLAC 1.5.0 20250211"; - -/* type BoxedFormatReader = Box<dyn FormatReader>; -type BoxedAudioDecoder = Box<dyn AudioDecoder + 'static>; */ - -/* pub struct StreamConfig { - channels: u32, - bits_per_sample: Bps, - sample_rate: u32, -} - -pub enum Bps { - _16, - _24, - _32, -} - -impl Bps { - fn new(num: u32) -> Result<Self> { - match num { - 16 => Ok(Bps::_16), - 24 => Ok(Bps::_24), - 32 => Ok(Bps::_32), - _ => Err(anyhow!("Invalid BPS")), - } - } - - fn value(&self) -> u32 { - match self { - Bps::_16 => 16, - Bps::_24 => 24, - Bps::_32 => 32, - } - } -} */ - -/* struct FileEncoder { - filename: PathBuf, - streamdata: StreamConfig, - format: BoxedFormatReader, - decoder: BoxedAudioDecoder, -} - -impl FileEncoder { - fn new(file: impl AsRef<Path>) -> Result<Self> { - let (format, decoder, config) = init_decoder(&file)?; - Ok(FileEncoder { - filename: file.as_ref().to_path_buf(), - streamdata: config, - format, - decoder, - }) - } - - fn temp_name(&self) -> PathBuf { - self.filename.clone().with_extension("tmp") - } - - fn encode(&mut self, mut encoder: FlacEncoder) -> Result<Vec<u8>> { - let mut buffer: Vec<i32> = Vec::new(); - let mut hasher = Md5::new(); - let track_id = self.format.default_track(TrackType::Audio).unwrap().id; - let offset = self.streamdata.bits_per_sample.value(); - - loop { - let packet = match self.format.next_packet() { - Ok(Some(packet)) => packet, - Ok(None) => break, - Err(error) => return Err(error.into()), - }; - - if packet.track_id() != track_id { - continue; - } - - if let GenericAudioBufferRef::S32(buf) = self.decoder.decode(&packet)? { - for sample in buf.iter_interleaved() { - let mut real_sample = sample; - if offset != 32 { - real_sample = sample >> (32 - offset) - } - match offset { - 16 => hasher.update(i16::try_from(real_sample)?.to_le_bytes()), - 24 => hasher - .update(i24::i24::try_from_i32(real_sample).unwrap().to_le_bytes()), - _ => hasher.update(real_sample.to_le_bytes()), - } - buffer.push(real_sample); - } - encoder - .process_interleaved(&buffer, buf.samples_planar() as u32) - .unwrap(); - buffer.clear(); - } else { - return Err(anyhow!("unsupported codec")); - } - } - - if let Err(enc) = encoder.finish() { - return Err(anyhow!("Encoding failed:\t{:?}", enc.state())); - } - - Ok(hasher.finalize().to_vec()) - } - - fn write_tags(&self, hash: Vec<u8>) -> Result<()> { - let tags = Tag::read_from_path(&self.filename)?; - let mut output = Tag::read_from_path(self.temp_name())?; - - let mut streaminfo = tags.get_streaminfo().unwrap().clone(); - - streaminfo.md5 = hash; - output.set_streaminfo(streaminfo); - - for block in tags.blocks() { - match block { - Block::VorbisComment(comment) => { - for (key, val) in comment.comments.clone() { - if key != "ENCODER" { - output.set_vorbis(key, val); - } - } - } - Block::StreamInfo(_) | Block::Padding(_) => {} - _ => output.push_block(block.clone()), - } - } - - output.write_to_path(self.temp_name())?; - Ok(()) - } -} - -fn init_decoder( - filename: impl AsRef<Path>, -) -> Result<(BoxedFormatReader, BoxedAudioDecoder, StreamConfig)> { - let src = std::fs::File::open(filename)?; - let mss = MediaSourceStream::new(Box::new(src), Default::default()); - let mut hint = Hint::new(); - hint.with_extension("flac"); - - let format_opts: FormatOptions = Default::default(); - let metadata_opts: MetadataOptions = Default::default(); - - let format = symphonia::default::get_probe() - .probe(&hint, mss, format_opts, metadata_opts) - .unwrap(); - - let track = format.default_track(TrackType::Audio).unwrap(); - - let decoder = symphonia::default::get_codecs() - .make_audio_decoder( - track.codec_params.as_ref().unwrap().audio().unwrap(), - &Default::default(), - ) - .unwrap(); - - let params = track.codec_params.as_ref().unwrap().audio().unwrap(); - - let config = StreamConfig { - channels: u32::try_from(params.channels.as_ref().unwrap().count()).unwrap(), - bits_per_sample: Bps::new(params.bits_per_sample.unwrap())?, - sample_rate: params.sample_rate.unwrap(), - }; - - Ok((format, decoder, config)) -} */ - -pub fn encode_file(filename: impl AsRef<Path>) -> Result<()> { - /* let mut filencoder = FileEncoder::new(filename)?; - let temp_name = filencoder.temp_name(); - - if temp_name.exists() { - std::fs::remove_file(&temp_name)?; - } - - let mut outf = File::create(temp_name)?; - let mut outw = WriteWrapper(&mut outf); - let enc = FlacEncoder::new() - .unwrap() - .channels(filencoder.streamdata.channels) - .bits_per_sample(filencoder.streamdata.bits_per_sample.value()) - .sample_rate(filencoder.streamdata.sample_rate) - .compression_level(8) - .verify(false) - .init_write(&mut outw) - .unwrap(); - - let hash = filencoder.encode(enc)?; - filencoder.write_tags(hash)?; - std::fs::rename(filencoder.temp_name(), filencoder.filename)?; - Ok(()) */ - - let decoder = FlacDecoder::new(); - let mut buffer: Vec<i32> = Vec::new(); - decoder.init_decode_from_file(&filename, &mut buffer)?; - - let temp_name = filename.as_ref().with_extension("tmp"); - let mut outf = File::create(temp_name)?; - let mut outw = WriteWrapper(&mut outf); - let mut enc = FlacEncoder::new() - .unwrap() - .channels(decoder.get_channels()) - .bits_per_sample(decoder.get_bps()) - .sample_rate(decoder.get_samplerate()) - .compression_level(8) - .verify(false) - .init_write(&mut outw) - .unwrap(); - - while decoder.decode_frame().is_ok() { - enc.process_interleaved(&buffer, buffer.iter().len() as u32 / decoder.get_channels()) - .unwrap(); - buffer.clear(); - } - - todo!() -} - -pub fn get_vendor(file: impl AsRef<Path>) -> Result<String> { - if let Some(vorbis) = Tag::read_from_path(file)?.vorbis_comments() { - Ok(vorbis.vendor_string.to_owned()) - } else { - Err(anyhow!("Vendor string not found")) - } -} - -#[cfg(test)] -mod tests { - use super::*; - use metaflac::Tag; - - #[test] - fn bit16() { - let name = "16bit.flac"; - let tempname = "16bit.flac.temp"; - std::fs::copy(name, tempname).unwrap(); - encode_file(name).unwrap(); - let target_md5 = Tag::read_from_path(tempname) - .unwrap() - .get_streaminfo() - .unwrap() - .md5 - .clone(); - let encoded_md5 = Tag::read_from_path(name) - .unwrap() - .get_streaminfo() - .unwrap() - .md5 - .clone(); - std::fs::remove_file(name).unwrap(); - std::fs::rename(tempname, name).unwrap(); - assert_eq!(target_md5, encoded_md5); - } - - #[test] - fn bit24() { - let name = "24bit.flac"; - let tempname = "24bit.flac.temp"; - std::fs::copy(name, tempname).unwrap(); - encode_file(name).unwrap(); - let target_md5 = Tag::read_from_path(tempname) - .unwrap() - .get_streaminfo() - .unwrap() - .md5 - .clone(); - let encoded_md5 = Tag::read_from_path(name) - .unwrap() - .get_streaminfo() - .unwrap() - .md5 - .clone(); - std::fs::remove_file(name).unwrap(); - std::fs::rename(tempname, name).unwrap(); - assert_eq!(target_md5, encoded_md5); - } - - #[test] - fn bit32() { - let name = "32bit.flac"; - let tempname = "32bit.flac.temp"; - std::fs::copy(name, tempname).unwrap(); - encode_file(name).unwrap(); - let target_md5 = Tag::read_from_path(tempname) - .unwrap() - .get_streaminfo() - .unwrap() - .md5 - .clone(); - let encoded_md5 = Tag::read_from_path(name) - .unwrap() - .get_streaminfo() - .unwrap() - .md5 - .clone(); - std::fs::remove_file(name).unwrap(); - std::fs::rename(tempname, name).unwrap(); - assert_eq!(target_md5, encoded_md5); - } -} |