1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
|
use nihav_core::muxers::*;
use nihav_registry::register::*;
struct WAVMuxer<'a> {
bw: &'a mut ByteWriter<'a>,
data_pos: u64,
}
impl<'a> WAVMuxer<'a> {
fn new(bw: &'a mut ByteWriter<'a>) -> Self {
Self {
bw,
data_pos: 0,
}
}
}
fn patch_size(bw: &mut ByteWriter, pos: u64) -> MuxerResult<()> {
let size = bw.tell() - pos;
bw.seek(SeekFrom::Current(-((size + 4) as i64)))?;
bw.write_u32le(size as u32)?;
bw.seek(SeekFrom::End(0))?;
Ok(())
}
impl<'a> MuxCore<'a> for WAVMuxer<'a> {
fn create(&mut self, strmgr: &StreamManager) -> MuxerResult<()> {
if strmgr.get_num_streams() != 1 {
return Err(MuxerError::InvalidArgument);
}
let stream = strmgr.get_stream(0).unwrap();
if stream.get_info().get_properties().get_audio_info().is_none() {
return Err(MuxerError::InvalidArgument);
}
let ainfo = stream.get_info().get_properties().get_audio_info().unwrap();
let edata_len = if let Some(ref buf) = stream.get_info().get_extradata() { buf.len() } else { 0 };
if edata_len >= (1 << 16) {
return Err(MuxerError::UnsupportedFormat);
}
let twocc = find_wav_twocc(stream.get_info().get_name());
if twocc.is_none() {
return Err(MuxerError::UnsupportedFormat);
}
let twocc = if stream.get_info().get_name() == "pcm" {
if !ainfo.format.float { 0x0001 } else { 0x0003 }
} else {
twocc.unwrap_or(0)
};
let avg_bytes_per_sec = if stream.get_info().get_name() == "pcm" {
(u32::from(ainfo.channels) * ainfo.sample_rate * u32::from(ainfo.format.bits)) >> 3
} else {
0
};
self.bw.write_buf(b"RIFF\0\0\0\0WAVEfmt ")?;
self.bw.write_u32le(if edata_len == 0 { 16 } else { 18 + edata_len } as u32)?;
self.bw.write_u16le(twocc)?;
self.bw.write_u16le(u16::from(ainfo.channels))?;
self.bw.write_u32le(ainfo.sample_rate)?;
self.bw.write_u32le(avg_bytes_per_sec)?;
self.bw.write_u16le(ainfo.block_len as u16)?;
self.bw.write_u16le(u16::from(ainfo.format.bits))?;
if let Some(ref buf) = stream.get_info().get_extradata() {
self.bw.write_u16le(edata_len as u16)?;
self.bw.write_buf(buf.as_slice())?;
}
self.bw.write_buf(b"data\0\0\0\0")?;
self.data_pos = self.bw.tell();
Ok(())
}
fn mux_frame(&mut self, _strmgr: &StreamManager, pkt: NAPacket) -> MuxerResult<()> {
if self.data_pos == 0 {
return Err(MuxerError::NotCreated);
}
let stream = pkt.get_stream();
if stream.get_num() != 0 {
return Err(MuxerError::UnsupportedFormat);
}
self.bw.write_buf(pkt.get_buffer().as_slice())?;
Ok(())
}
fn flush(&mut self) -> MuxerResult<()> {
Ok(())
}
fn end(&mut self) -> MuxerResult<()> {
patch_size(self.bw, self.data_pos)?;
patch_size(self.bw, 8)?;
// todo patch avg_bytes_per_second if calculated
// todo write fact value if calculated
Ok(())
}
}
impl<'a> NAOptionHandler for WAVMuxer<'a> {
fn get_supported_options(&self) -> &[NAOptionDefinition] { &[] }
fn set_options(&mut self, _options: &[NAOption]) { }
fn query_option_value(&self, _name: &str) -> Option<NAValue> { None }
}
pub struct WAVMuxerCreator {}
impl MuxerCreator for WAVMuxerCreator {
fn new_muxer<'a>(&self, bw: &'a mut ByteWriter<'a>) -> Box<dyn MuxCore<'a> + 'a> {
Box::new(WAVMuxer::new(bw))
}
fn get_name(&self) -> &'static str { "wav" }
fn get_capabilities(&self) -> MuxerCapabilities { MuxerCapabilities::SingleAudio("any") }
}
#[cfg(test)]
mod test {
use nihav_core::codecs::*;
use nihav_core::demuxers::*;
use nihav_core::muxers::*;
use nihav_codec_support::test::enc_video::*;
use crate::*;
#[test]
fn test_wav_muxer() {
let mut dmx_reg = RegisteredDemuxers::new();
generic_register_all_demuxers(&mut dmx_reg);
// sample: https://samples.mplayerhq.hu/V-codecs/RT21/320x240/laser05.avi
let dec_config = DecoderTestParams {
demuxer: "avi",
in_name: "assets/Indeo/laser05.avi",
limit: None,
stream_type: StreamType::None,
dmx_reg, dec_reg: RegisteredDecoders::new(),
};
let mut mux_reg = RegisteredMuxers::new();
generic_register_all_muxers(&mut mux_reg);
/*let enc_config = EncoderTestParams {
muxer: "wav",
enc_name: "",
out_name: "muxed.wav",
mux_reg, enc_reg: RegisteredEncoders::new(),
};
test_remuxing(&dec_config, &enc_config);*/
test_remuxing_md5(&dec_config, "wav", &mux_reg,
[0x1040ebe8, 0xe7a43e84, 0x49fbe234, 0xe870b6b3]);
}
}
|
