From: Kostya Shishkov Date: Tue, 4 Sep 2018 12:13:11 +0000 (+0200) Subject: rmdec: parse audio information X-Git-Url: https://git.nihav.org/?a=commitdiff_plain;h=c19ce782830be53272ad3bade03d975fe377c8d0;p=nihav.git rmdec: parse audio information --- diff --git a/src/demuxers/realmedia.rs b/src/demuxers/realmedia.rs index dabb473..d4cd309 100644 --- a/src/demuxers/realmedia.rs +++ b/src/demuxers/realmedia.rs @@ -72,6 +72,7 @@ impl RMVideoStream { #[derive(Clone,Copy,PartialEq)] enum Deinterleaver { None, + RA28_8, Generic, Sipro, VBR, @@ -80,11 +81,31 @@ enum Deinterleaver { #[allow(dead_code)] struct RMAudioStream { deint: Deinterleaver, + iinfo: Option, } +const RM_ILEAVE_INT0: u32 = mktag!(b"Int0"); +const RM_ILEAVE_INT4: u32 = mktag!(b"Int4"); +const RM_ILEAVE_GENR: u32 = mktag!(b"genr"); +const RM_ILEAVE_SIPR: u32 = mktag!(b"sipr"); +const RM_ILEAVE_VBRS: u32 = mktag!(b"vbrs"); + impl RMAudioStream { - fn new(deint: Deinterleaver) -> Self { - RMAudioStream { deint: deint } + fn new(iinfo: Option) -> Self { + let deint; + if let Some(info) = iinfo { + deint = match info.id { + RM_ILEAVE_INT0 => Deinterleaver::None, + RM_ILEAVE_INT4 => Deinterleaver::RA28_8, + RM_ILEAVE_GENR => Deinterleaver::Generic, + RM_ILEAVE_SIPR => Deinterleaver::Sipro, + RM_ILEAVE_VBRS => Deinterleaver::VBR, + _ => {println!("unknown deint {:X}", info.id); Deinterleaver::None }, + }; + } else { + deint = Deinterleaver::None; + } + RMAudioStream { deint: deint, iinfo: iinfo } } } @@ -317,6 +338,172 @@ if id == 0 { return Ok((0, 0, 0)); } Ok((id, size, ver)) } +#[derive(Clone,Copy,Debug)] +struct InterleaveInfo { + id: u32, + factor: u16, + block_size: u16, + frame_size: u16, +} + +#[derive(Clone,Copy,Debug)] +struct RealAudioInfo { + fcc: u32, + sample_rate: u32, + sample_size: u16, + channels: u16, + channel_mask: u32, + granularity: u32, + bytes_per_minute: u32, + total_bytes: u32, + edata_size: u32, + ileave_info: Option +} + +fn skip_ra_metadata(src: &mut ByteReader) -> DemuxerResult<()> { + let title_len = src.read_byte()? as usize; + src.read_skip(title_len)?; + let author_len = src.read_byte()? as usize; + src.read_skip(author_len)?; + let copywrong_len = src.read_byte()? as usize; + src.read_skip(copywrong_len)?; + let comment_len = src.read_byte()? as usize; + src.read_skip(comment_len)?; + Ok(()) +} + +#[allow(unused_variables)] +fn parse_aformat3(src: &mut ByteReader) -> DemuxerResult { + let start = src.tell(); + let header_len = src.read_u16be()?; + validate!(header_len >= 24); + let flavor = src.read_u16be()?; + let granularity = src.read_u32be()?; + let bytes_per_minute = src.read_u32be()?; + let total_bytes = src.read_u32be()?; + + skip_ra_metadata(src)?; + + let _can_copy = src.read_byte()?; + let fcc_len = src.read_byte()?; + validate!(fcc_len == 4); + let fcc = src.read_u32be()?; + + let end = src.tell(); + validate!(end - start <= (header_len as u64) + 2); + + Ok(RealAudioInfo { + fcc: fcc, sample_rate: 8000, sample_size: 16, channels: 1, channel_mask: 0, + granularity: granularity, bytes_per_minute: bytes_per_minute, + total_bytes: total_bytes, edata_size: 0, + ileave_info: None, + }) +} + +#[allow(unused_variables)] +fn parse_aformat4(src: &mut ByteReader) -> DemuxerResult { + let start = src.tell(); + src.read_skip(2)?; // zeroes + let id = src.read_u32be()?; + validate!(id == mktag!(b".ra4")); + let data_size = src.read_u32be()?; + let _ver4 = src.read_u16be()?; // should be 4 + let header_size = src.read_u32be()?; + let _flavor = src.read_u16be()?; + let granularity = src.read_u32be()?; + let total_bytes = src.read_u32be()?; + let bytes_per_minute = src.read_u32be()?; + let _bytes_per_minute2 = src.read_u32be()?; + let ileave_factor = src.read_u16be()?; + let ileave_block_size = src.read_u16be()?; + let _user_data = src.read_u16be()?; + let sample_rate = src.read_u32be()?; + let sample_size = src.read_u32be()?; + let channels = src.read_u16be()?; + let interleaver_id_len = src.read_byte()?; + validate!(interleaver_id_len == 4); + let interleaver_id = src.read_u32be()?; + let fcc_len = src.read_byte()?; + validate!(fcc_len == 4); + let fcc = src.read_u32be()?; + let is_interleaved = src.read_byte()?; + let _can_copy = src.read_byte()?; + let _stream_type = src.read_byte()?; + + skip_ra_metadata(src)?; + + let end = src.tell(); + validate!(end - start <= (header_size as u64) + 10); + + let ileave_info = if is_interleaved != 0 { + Some(InterleaveInfo { + id: interleaver_id, factor: ileave_factor, block_size: ileave_block_size, frame_size: 0, + }) + } else { + None + }; + + Ok(RealAudioInfo { + fcc: fcc, sample_rate: sample_rate, sample_size: sample_size as u16, channels: channels, channel_mask: 0, + granularity: granularity, bytes_per_minute: bytes_per_minute, + total_bytes: total_bytes & 0xFFFFFF, edata_size: 0, + ileave_info: ileave_info, + }) +} + +#[allow(unused_variables)] +fn parse_aformat5(src: &mut ByteReader) -> DemuxerResult { + let start = src.tell(); + src.read_skip(2)?; // zeroes + let id = src.read_u32be()?; + validate!(id == mktag!(b".ra5")); + let data_size = src.read_u32be()?; + let _ver5 = src.read_u16be()?; // should be 5 + let header_size = src.read_u32be()?; + let _flavor = src.read_u16be()?; + let granularity = src.read_u32be()?; + let total_bytes = src.read_u32be()?; + let bytes_per_minute = src.read_u32be()?; + let _bytes_per_minute2 = src.read_u32be()?; + let ileave_factor = src.read_u16be()?; + let ileave_block_size = src.read_u16be()?; + let frame_size = src.read_u16be()?; + let user_data = src.read_u32be()?; + let _sample_rate1 = src.read_u16be()?; + let sample_rate = src.read_u32be()?; + let sample_size = src.read_u32be()?; + let channels = src.read_u16be()?; + let interleaver_id = src.read_u32be()?; + let fcc = src.read_u32be()?; + let is_interleaved = src.read_byte()?; + let _can_copy = src.read_byte()?; + let _stream_type = src.read_byte()?; + let has_ileave_pattern = src.read_byte()?; + if has_ileave_pattern != 0 { +unimplemented!("ra5 interleave pattern"); + } + let edata_size = src.read_u32be()?; + + let end = src.tell(); + validate!(end - start <= (header_size as u64) + 10); + src.read_skip((end as usize) - (header_size as usize))?; + + let ileave_info = if is_interleaved != 0 { + Some(InterleaveInfo { + id: interleaver_id, factor: ileave_factor, block_size: ileave_block_size, frame_size: frame_size, + }) + } else { + None + }; + + Ok(RealAudioInfo { + fcc: fcc, sample_rate: sample_rate, sample_size: sample_size as u16, channels: channels, channel_mask: 0, + granularity: granularity, bytes_per_minute: bytes_per_minute, + total_bytes: total_bytes & 0xFFFFFF, edata_size: edata_size, + ileave_info: ileave_info, + }) +} + const RMVB_HDR_SIZE: u32 = 18; const RMVB_PROP_SIZE: u32 = 50; const KEYFRAME_FLAG: u8 = 0x02; @@ -450,16 +637,38 @@ impl<'a> RealMediaDemuxer<'a> { let tag2 = src.peek_u32be()?; //println!("tag1 {:X} tag2 {:X}", tag, tag2); if tag == mktag!('.', 'r', 'a', 0xFD) { - //todo audio - let cname = "unknown";//find_codec_name(RM_AUDIO_CODEC_REGISTER, fcc); - let soniton = NASoniton::new(16, SONITON_FLAG_SIGNED); - let ahdr = NAAudioInfo::new(44100, 2, soniton, 1/*block_align as usize*/); - let extradata = None; - let ainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), extradata); - let res = strmgr.add_stream(NAStream::new(StreamType::Audio, stream_no as u32, ainfo, 1, 44100)); + let ver = src.read_u16be()?; + let ainfo = match ver { + 3 => { + parse_aformat3(&mut src)? + }, + 4 => { + parse_aformat4(&mut src)? + }, + 5 => { + parse_aformat5(&mut src)? + }, + _ => { + println!("unknown version {}", ver); + return Err(DemuxerError::InvalidData); + }, + }; +println!(" got ainfo {:?}", ainfo); + let cname = find_codec_name(RM_AUDIO_CODEC_REGISTER, ainfo.fcc); + let srate = ainfo.sample_rate; + let soniton = NASoniton::new(ainfo.sample_size as u8, SONITON_FLAG_SIGNED); + let ahdr = NAAudioInfo::new(srate, ainfo.channels as u8, soniton, 1); + let extradata = if ainfo.edata_size == 0 { + None + } else { + let eslice = &edata_[(src.tell() as usize)..]; + Some(eslice.to_vec()) + }; + let nainfo = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), extradata); + let res = strmgr.add_stream(NAStream::new(StreamType::Audio, stream_no as u32, nainfo, 1, srate)); if res.is_none() { return Err(MemoryError); } - let astr = RMAudioStream::new(Deinterleaver::None); + let astr = RMAudioStream::new(ainfo.ileave_info); self.streams.push(RMStreamType::Audio(astr)); } else if ((tag2 == mktag!('V', 'I', 'D', 'O')) || (tag2 == mktag!('I', 'M', 'A', 'G'))) && ((tag as usize) <= edata_size) { src.read_skip(4)?; @@ -491,6 +700,22 @@ impl<'a> RealMediaDemuxer<'a> { let vstr = RMVideoStream::new(); self.streams.push(RMStreamType::Video(vstr)); + } else if tag == mktag!(b"LSD:") { + let extradata = Some(edata_.to_vec()); + + src.read_skip(4)?; //version + let channels = src.read_u16be()?; + let samp_size = src.read_u16be()?; + let sample_rate = src.read_u32be()?; + + println!("LSD sr {}, {} ch", sample_rate, channels); + let soniton = NASoniton::new(samp_size as u8, SONITON_FLAG_SIGNED); + let ahdr = NAAudioInfo::new(sample_rate, channels as u8, soniton, 1); + let nainfo = NACodecInfo::new("ralf", NACodecTypeInfo::Audio(ahdr), extradata); + let res = strmgr.add_stream(NAStream::new(StreamType::Audio, stream_no as u32, nainfo, 1, sample_rate)); + if res.is_none() { return Err(MemoryError); } + let astr = RMAudioStream::new(None); + self.streams.push(RMStreamType::Audio(astr)); } else { self.streams.push(RMStreamType::Logical); }