impl ChannelOp {
fn is_remix(&self) -> bool {
- match *self {
- ChannelOp::Remix(_) => true,
- ChannelOp::DupMono(_) => true,
- _ => false,
- }
+ matches! (*self, ChannelOp::Remix(_) | ChannelOp::DupMono(_))
}
}
-fn apply_channel_op<T:Copy>(ch_op: &ChannelOp, src: &[T], dst: &mut Vec<T>) {
+fn apply_channel_op<T:Copy>(ch_op: &ChannelOp, src: &[T], dst: &mut [T]) {
match *ch_op {
ChannelOp::Passthrough => {
dst.copy_from_slice(src);
};
}
-fn remix_i32(ch_op: &ChannelOp, src: &[i32], dst: &mut Vec<i32>) {
+fn remix_i32(ch_op: &ChannelOp, src: &[i32], dst: &mut [i32]) {
if let ChannelOp::Remix(ref remix_mat) = ch_op {
let sch = src.len();
for (out, coeffs) in dst.iter_mut().zip(remix_mat.chunks(sch)) {
}
}
-fn remix_f32(ch_op: &ChannelOp, src: &[f32], dst: &mut Vec<f32>) {
+fn remix_f32(ch_op: &ChannelOp, src: &[f32], dst: &mut [f32]) {
if let ChannelOp::Remix(ref remix_mat) = ch_op {
let sch = src.len();
for (out, coeffs) in dst.iter_mut().zip(remix_mat.chunks(sch)) {
fn cvt_from(val: u8) -> u8 { val }
}
impl FromFmt<u8> for i16 {
- fn cvt_from(val: u8) -> i16 { (i16::from(val) - 128).wrapping_mul(0x101) }
+ fn cvt_from(val: u8) -> i16 { u16::from(val ^ 0x80).wrapping_mul(0x101) as i16}
}
impl FromFmt<u8> for i32 {
- fn cvt_from(val: u8) -> i32 { (i32::from(val) - 128).wrapping_mul(0x01010101) }
+ fn cvt_from(val: u8) -> i32 { u32::from(val ^ 0x80).wrapping_mul(0x01010101) as i32 }
}
impl FromFmt<u8> for f32 {
fn cvt_from(val: u8) -> f32 { (f32::from(val) - 128.0) / 128.0 }
fn cvt_from(val: i16) -> i16 { val }
}
impl FromFmt<i16> for i32 {
- fn cvt_from(val: i16) -> i32 { i32::from(val).wrapping_mul(0x10001) }
+ fn cvt_from(val: i16) -> i32 { (i32::from(val) & 0xFFFF) | (i32::from(val) << 16) }
}
impl FromFmt<i16> for f32 {
fn cvt_from(val: i16) -> f32 { f32::from(val) / 32768.0 }
fn cvt_from(val: f32) -> u8 { ((val * 128.0) + 128.0).min(255.0).max(0.0) as u8 }
}
impl FromFmt<f32> for i16 {
- fn cvt_from(val: f32) -> i16 { (val * 32768.0).min(16383.0).max(-16384.0) as i16 }
+ fn cvt_from(val: f32) -> i16 { (val * 32768.0).min(32767.0).max(-32768.0) as i16 }
}
impl FromFmt<f32> for i32 {
- fn cvt_from(val: f32) -> i32 { (val * 31.0f32.exp2()) as i32 }
+ fn cvt_from(val: f32) -> i32 {
+ if val >= 1.0 {
+ std::i32::MAX
+ } else if val <= -1.0 {
+ std::i32::MIN
+ } else {
+ let scale = (1u32 << 31) as f32;
+ (val * scale) as i32
+ }
+ }
}
impl FromFmt<f32> for f32 {
fn cvt_from(val: f32) -> f32 { val }
trait SampleReader {
- fn get_samples_i32(&self, pos: usize, dst: &mut Vec<i32>);
- fn get_samples_f32(&self, pos: usize, dst: &mut Vec<f32>);
+ fn get_samples_i32(&self, pos: usize, dst: &mut [i32]);
+ fn get_samples_f32(&self, pos: usize, dst: &mut [f32]);
}
struct GenericSampleReader<'a, T:Copy> {
}
impl<'a, T:Copy+IntoFmt<i32>+IntoFmt<f32>> SampleReader for GenericSampleReader<'a, T> {
- fn get_samples_i32(&self, pos: usize, dst: &mut Vec<i32>) {
+ fn get_samples_i32(&self, pos: usize, dst: &mut [i32]) {
let mut off = pos;
for el in dst.iter_mut() {
*el = self.data[off].cvt_into();
off += self.stride;
}
}
- fn get_samples_f32(&self, pos: usize, dst: &mut Vec<f32>) {
+ fn get_samples_f32(&self, pos: usize, dst: &mut [f32]) {
let mut off = pos;
for el in dst.iter_mut() {
*el = self.data[off].cvt_into();
}
}
+struct S8SampleReader<'a> {
+ data: &'a [u8],
+ stride: usize,
+}
+
+impl<'a> SampleReader for S8SampleReader<'a> {
+ fn get_samples_i32(&self, pos: usize, dst: &mut [i32]) {
+ let mut off = pos;
+ for el in dst.iter_mut() {
+ *el = (self.data[off] ^ 0x80).cvt_into();
+ off += self.stride;
+ }
+ }
+ fn get_samples_f32(&self, pos: usize, dst: &mut [f32]) {
+ let mut off = pos;
+ for el in dst.iter_mut() {
+ *el = (self.data[off] ^ 0x80).cvt_into();
+ off += self.stride;
+ }
+ }
+}
+
struct PackedSampleReader<'a> {
data: &'a [u8],
fmt: NASoniton,
let bpp = (fmt.bits >> 3) as usize;
Self { data, fmt, bpp }
}
- fn get_samples<T:Copy>(&self, pos: usize, dst: &mut Vec<T>) where u8: IntoFmt<T>, i16: IntoFmt<T>, i32: IntoFmt<T>, f32: IntoFmt<T> {
+ fn get_samples<T:Copy>(&self, pos: usize, dst: &mut [T]) where u8: IntoFmt<T>, i16: IntoFmt<T>, i32: IntoFmt<T>, f32: IntoFmt<T> {
let mut offset = pos * self.bpp * dst.len();
for el in dst.iter_mut() {
let src = &self.data[offset..];
*el = if !self.fmt.float {
match (self.bpp, self.fmt.be) {
- (1, _) => src[0].cvt_into(),
+ (1, _) => if !self.fmt.signed { src[0].cvt_into() } else { (src[0] ^ 0x80).cvt_into() },
(2, true) => (read_u16be(src).unwrap() as i16).cvt_into(),
(2, false) => (read_u16le(src).unwrap() as i16).cvt_into(),
(3, true) => ((read_u24be(src).unwrap() << 8) as i32).cvt_into(),
}
impl SampleReader for PackedSampleReader<'_> {
- fn get_samples_i32(&self, pos: usize, dst: &mut Vec<i32>) {
+ fn get_samples_i32(&self, pos: usize, dst: &mut [i32]) {
self.get_samples(pos, dst);
}
- fn get_samples_f32(&self, pos: usize, dst: &mut Vec<f32>) {
+ fn get_samples_f32(&self, pos: usize, dst: &mut [f32]) {
self.get_samples(pos, dst);
}
}
match (self.bpp, self.fmt.be) {
(1, _) => {
dst[0] = u8::cvt_from(*el);
+ if self.fmt.signed {
+ dst[0] ^= 0x80;
+ }
},
(2, true) => write_u16be(dst, i16::cvt_from(*el) as u16).unwrap(),
(2, false) => write_u16le(dst, i16::cvt_from(*el) as u16).unwrap(),
NABufferType::AudioU8(ref ab) => {
let stride = ab.get_stride();
let data = ab.get_data();
- Box::new(GenericSampleReader { data, stride })
+ if !src_fmt.signed {
+ Box::new(GenericSampleReader { data, stride })
+ } else {
+ Box::new(S8SampleReader { data, stride })
+ }
},
NABufferType::AudioI16(ref ab) => {
let data = ab.get_data();
let l = data[off0];
let r = data[off1];
assert_eq!(l, 7445);
- assert_eq!(r, -19943);
+ assert_eq!(r, -19505);
} else {
panic!("wrong buffer type");
}
projects / nihav.git / blobdiff