1 use nihav_core::frame::*;
2 use nihav_core::soundcvt::*;
13 impl<T:Clone+Copy+From<u8>> AudioQueue<T> {
14 fn new(channels: usize, rec_size: usize, ileaved: bool) -> Self {
18 stride: if ileaved { rec_size * channels } else { rec_size },
21 data: vec![0.into(); rec_size * channels],
24 fn get_cur_size(&self) -> usize {
25 let size = self.end - self.start;
32 fn get_cur_avail(&self) -> usize { self.stride - self.end }
33 fn get_potentially_avail(&self) -> usize { self.stride - self.get_cur_size() }
34 fn read(&mut self, src: &NAAudioBuffer<T>) {
35 let mut to_copy = src.get_length();
37 to_copy *= self.channels;
39 if self.get_cur_avail() < to_copy {
40 if self.get_potentially_avail() >= to_copy {
43 let new_len = (self.stride * 2).max(self.get_cur_size() + src.get_length());
44 let mut new_buf = vec![0.into(); new_len * self.channels];
45 let new_stride = if !self.ileaved { new_len } else { new_len * self.channels };
47 let old_len = self.get_cur_size();
48 let new_len = src.get_length();
50 for (dst, (old, new)) in new_buf.chunks_exact_mut(new_stride).zip(
51 self.data.chunks_exact(self.stride).zip(
52 src.get_data().chunks(src.get_stride()))) {
53 dst[..old_len].copy_from_slice(&old[self.start..self.end]);
54 dst[old_len..][..new_len].copy_from_slice(&new[..new_len]);
57 for (dst, new) in new_buf.chunks_exact_mut(new_stride).zip(
58 src.get_data().chunks(src.get_stride())) {
59 dst[..new_len].copy_from_slice(&new[..new_len]);
63 self.stride = new_stride;
65 self.end = old_len + new_len;
69 match (src.get_step() != 1, self.ileaved) {
71 for (dst, src) in self.data.chunks_exact_mut(self.stride).zip(src.get_data().chunks_exact(src.get_stride())) {
72 dst[self.end..][..to_copy].copy_from_slice(&src[..to_copy]);
76 for (i, chunk) in src.get_data().chunks_exact(src.get_step()).enumerate() {
77 for (ch, &samp) in chunk.iter().enumerate() {
78 self.data[self.stride * ch + self.end + i] = samp;
83 let sdata = src.get_data();
84 self.data[self.end..][..to_copy].copy_from_slice(&sdata[..to_copy]);
86 _ => unimplemented!(),
90 fn write(&mut self, dbuf: &mut NAAudioBuffer<T>) {
91 let mut dst_len = dbuf.get_length();
92 let dst_stride = dbuf.get_stride();
93 let dst_step = dbuf.get_step();
94 let dst = dbuf.get_data_mut().unwrap();
96 match (self.ileaved, dst_step != 1) {
98 for (dst, src) in dst.chunks_mut(dst_stride).zip(self.data.chunks_exact(self.stride)) {
99 dst[..dst_len].copy_from_slice(&src[self.start..][..dst_len]);
103 dst_len *= self.channels;
104 dst[..dst_len].copy_from_slice(&self.data[self.start..][..dst_len]);
106 _ => unimplemented!(),
108 self.start += dst_len;
110 fn renorm(&mut self) {
115 let move_size = self.end - self.start;
117 for chan in self.data.chunks_exact_mut(self.stride) {
118 for i in 0..move_size {
119 chan[i] = chan[self.start + i];
123 self.end -= self.start;
130 I16(AudioQueue<i16>),
131 I32(AudioQueue<i32>),
132 F32(AudioQueue<f32>),
133 Packed(AudioQueue<u8>),
137 fn get_length(&self) -> usize {
139 AudioDataType::U8(ref queue) => queue.get_cur_size(),
140 AudioDataType::I16(ref queue) => queue.get_cur_size(),
141 AudioDataType::I32(ref queue) => queue.get_cur_size(),
142 AudioDataType::F32(ref queue) => queue.get_cur_size(),
143 AudioDataType::Packed(ref queue) => queue.get_cur_size(),
148 pub struct AudioConverter {
149 queue: AudioDataType,
150 dst_fmt: NAAudioInfo,
151 dst_chmap: NAChannelMap,
153 resampler: NAResample,
156 impl AudioConverter {
157 pub fn new(sinfo: &NAAudioInfo, dinfo: &NAAudioInfo, dst_chmap: NAChannelMap) -> Self {
158 let ch = usize::from(dinfo.channels);
159 let size = dinfo.block_len * 2;
160 let il = !dinfo.format.planar;
161 let queue = match (dinfo.format.bits, dinfo.format.float, dinfo.format.signed) {
162 ( 8, false, false) => AudioDataType::U8(AudioQueue::new(ch, size, il)),
163 (16, false, true) => AudioDataType::I16(AudioQueue::new(ch, size, il)),
164 (32, false, true) => AudioDataType::I32(AudioQueue::new(ch, size, il)),
165 (32, true, _) => AudioDataType::F32(AudioQueue::new(ch, size, il)),
166 _ => AudioDataType::Packed(AudioQueue::new(ch, size, il)),
168 const RESAMPLE_FILTER_ORDER: usize = 16;
169 let resampler = NAResample::new(sinfo.sample_rate, dinfo, &dst_chmap, RESAMPLE_FILTER_ORDER);
178 pub fn queue_frame(&mut self, buf: NABufferType, tinfo: NATimeInfo) -> bool {
179 let ret = self.resampler.convert_audio_frame(&buf);
180 if let Ok(dbuf) = ret {
181 if self.apts.is_none() && tinfo.get_pts().is_some() {
182 self.apts = tinfo.get_pts();
184 match (&mut self.queue, dbuf) {
185 (AudioDataType::U8(ref mut queue), NABufferType::AudioU8(ref buf)) => queue.read(buf),
186 (AudioDataType::I16(ref mut queue), NABufferType::AudioI16(ref buf)) => queue.read(buf),
187 (AudioDataType::I32(ref mut queue), NABufferType::AudioI32(ref buf)) => queue.read(buf),
188 (AudioDataType::F32(ref mut queue), NABufferType::AudioF32(ref buf)) => queue.read(buf),
189 (AudioDataType::Packed(ref mut queue), NABufferType::AudioPacked(ref buf)) => queue.read(buf),
190 _ => unimplemented!(),
197 pub fn get_frame(&mut self, info: NACodecInfoRef) -> Option<NAFrame> {
198 if self.queue.get_length() >= self.dst_fmt.block_len {
199 if let Ok(mut abuf) = alloc_audio_buffer(self.dst_fmt, self.dst_fmt.block_len, self.dst_chmap.clone()) {
200 match (&mut self.queue, &mut abuf) {
201 (AudioDataType::U8(ref mut queue), NABufferType::AudioU8(ref mut buf)) => queue.write(buf),
202 (AudioDataType::I16(ref mut queue), NABufferType::AudioI16(ref mut buf)) => queue.write(buf),
203 (AudioDataType::I32(ref mut queue), NABufferType::AudioI32(ref mut buf)) => queue.write(buf),
204 (AudioDataType::F32(ref mut queue), NABufferType::AudioF32(ref mut buf)) => queue.write(buf),
205 (AudioDataType::Packed(ref mut queue), NABufferType::AudioPacked(ref mut buf)) => queue.write(buf),
206 _ => unimplemented!(),
208 let tinfo = NATimeInfo::new(self.apts, None, Some(self.dst_fmt.block_len as u64), 1, self.dst_fmt.sample_rate);
209 if let Some(ref mut val) = self.apts {
210 *val += self.dst_fmt.block_len as u64;
212 Some(NAFrame::new(tinfo, FrameType::I, true, info, abuf))
214 println!(" failed to allocate audio frame");