From 9559c2c8fa6591e52cf582fd94c8897a4c4c1de1 Mon Sep 17 00:00:00 2001 From: Kostya Shishkov Date: Thu, 21 Oct 2021 18:24:06 +0200 Subject: [PATCH] mov: parse v2 audio header --- nihav-commonfmt/src/demuxers/mov.rs | 58 ++++++++++++++++++++--------- 1 file changed, 41 insertions(+), 17 deletions(-) diff --git a/nihav-commonfmt/src/demuxers/mov.rs b/nihav-commonfmt/src/demuxers/mov.rs index 99a3762..4a11758 100644 --- a/nihav-commonfmt/src/demuxers/mov.rs +++ b/nihav-commonfmt/src/demuxers/mov.rs @@ -689,15 +689,19 @@ fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult let sver = br.read_u16be()?; let _revision = br.read_u16le()?; let _vendor = br.read_u32be()?; - let nchannels = br.read_u16be()?; - validate!(nchannels <= 64); + let mut nchannels = br.read_u16be()?; + if sver != 2 { + validate!(nchannels <= 64); + } let sample_size = br.read_u16be()?; validate!(sample_size <= 128); let _compr_id = br.read_u16be()?; let packet_size = br.read_u16be()? as usize; validate!(packet_size == 0); - let sample_rate = br.read_u32be()?; - validate!(sample_rate > (1 << 16)); + let mut sample_rate = br.read_u32be()? >> 16; + if sver != 2 { + validate!(sample_rate > 0); + } let cname = if let Some(name) = find_codec_from_mov_audio_fourcc(&fcc) { name } else if let (true, Some(name)) = ((fcc[0] == b'm' && fcc[1] == b's'), find_codec_from_wav_twocc(u16::from(fcc[2]) * 256 + u16::from(fcc[3]))) { @@ -710,18 +714,38 @@ fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult soniton.signed = false; } let block_align = 1; - if sver == 1 { - let samples_per_packet = br.read_u32be()?; - let _bytes_per_packet = br.read_u32be()?; - let bytes_per_frame = br.read_u32be()?; - let _bytes_per_sample = br.read_u32be()?; - track.bsize = bytes_per_frame as usize; - track.frame_samples = samples_per_packet as usize; - track.tb_num = samples_per_packet; - } else { - track.bsize = (sample_size / 8) as usize; - } - track.tb_den = sample_rate >> 16; + match sver { + 1 => { + let samples_per_packet = br.read_u32be()?; + let _bytes_per_packet = br.read_u32be()?; + let bytes_per_frame = br.read_u32be()?; + let _bytes_per_sample = br.read_u32be()?; + track.bsize = bytes_per_frame as usize; + track.frame_samples = samples_per_packet as usize; + track.tb_num = samples_per_packet; + }, + 2 => { + br.read_u32be()?; // some size + let srate = br.read_f64be()?; + validate!(srate > 1.0); + sample_rate = srate as u32; + let channels = br.read_u32be()?; + validate!(channels > 0 && channels < 255); + nchannels = channels as u16; + br.read_u32be()?; // always 0x7F000000 + let _bits_per_csample = br.read_u32be()?; + let _codec_flags = br.read_u32be()?; + let bytes_per_frame = br.read_u32be()?; + let samples_per_packet = br.read_u32be()?; + track.bsize = bytes_per_frame as usize; + track.frame_samples = samples_per_packet as usize; + track.tb_num = samples_per_packet; + }, + _ => { + track.bsize = (sample_size / 8) as usize; + }, + }; + track.tb_den = sample_rate; track.raw_audio = match &fcc { b"NONE" | b"raw " | b"twos" | b"sowt" | b"in24" | b"in32" | b"fl32" | b"fl64" | @@ -730,7 +754,7 @@ fn read_stsd(track: &mut Track, br: &mut ByteReader, size: u64) -> DemuxerResult b"MAC3" | b"MAC6" => true, _ => false, }; - let ahdr = NAAudioInfo::new(sample_rate >> 16, nchannels as u8, soniton, block_align); + let ahdr = NAAudioInfo::new(sample_rate, nchannels as u8, soniton, block_align); let edata = parse_audio_edata(br, start_pos, size)?; codec_info = NACodecInfo::new(cname, NACodecTypeInfo::Audio(ahdr), edata); track.channels = nchannels as usize; -- 2.30.2