mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-11-14 13:31:09 +00:00
484 lines
15 KiB
Rust
484 lines
15 KiB
Rust
// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.com>
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use muldiv::MulDiv;
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use std::ops;
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use ClockTime;
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use Format;
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#[derive(PartialEq, Eq, Hash, Clone, Copy, Debug)]
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pub enum GenericFormattedValue {
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Undefined(i64),
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Default(Default),
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Bytes(Bytes),
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Time(ClockTime),
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Buffers(Buffers),
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Percent(Option<u32>),
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Other(Format, i64),
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}
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#[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Debug, Default)]
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pub struct Default(pub Option<u64>);
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#[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Debug, Default)]
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pub struct Bytes(pub Option<u64>);
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#[derive(PartialEq, Eq, PartialOrd, Ord, Hash, Clone, Copy, Debug, Default)]
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pub struct Buffers(pub Option<u64>);
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pub type Time = ClockTime;
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pub trait FormattedValue: Copy + Clone + Sized + 'static {
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fn get_default_format() -> Format;
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fn try_from(v: GenericFormattedValue) -> Option<Self>;
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fn get_format(&self) -> Format;
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unsafe fn from_raw(format: Format, value: i64) -> Self;
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unsafe fn to_raw_value(&self) -> i64;
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}
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pub trait SpecificFormattedValue: FormattedValue {}
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impl FormattedValue for GenericFormattedValue {
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fn get_default_format() -> Format {
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Format::Undefined
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}
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fn try_from(v: GenericFormattedValue) -> Option<Self> {
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Some(v)
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}
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fn get_format(&self) -> Format {
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self.get_format()
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}
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unsafe fn from_raw(format: Format, value: i64) -> Self {
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GenericFormattedValue::new(format, value)
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}
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unsafe fn to_raw_value(&self) -> i64 {
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self.get_value()
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}
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}
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impl GenericFormattedValue {
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pub fn new(format: Format, value: i64) -> Self {
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match format {
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Format::Undefined => GenericFormattedValue::Undefined(value),
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Format::Default => GenericFormattedValue::Default(if value == -1 {
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Default(None)
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} else {
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Default(Some(value as u64))
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}),
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Format::Bytes => GenericFormattedValue::Bytes(if value == -1 {
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Bytes(None)
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} else {
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Bytes(Some(value as u64))
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}),
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Format::Time => GenericFormattedValue::Time(if value == -1 {
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ClockTime::none()
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} else {
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ClockTime::from_nseconds(value as u64)
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}),
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Format::Buffers => GenericFormattedValue::Buffers(if value == -1 {
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Buffers(None)
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} else {
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Buffers(Some(value as u64))
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}),
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Format::Percent => GenericFormattedValue::Percent(if value == -1 {
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None
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} else {
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Some(value as u32)
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}),
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Format::__Unknown(_) => GenericFormattedValue::Other(format, value),
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}
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}
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pub fn from_undefined(v: i64) -> Self {
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GenericFormattedValue::Undefined(v)
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}
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pub fn from_default<V: Into<Default>>(v: V) -> Self {
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GenericFormattedValue::Default(v.into())
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}
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pub fn from_bytes<V: Into<Bytes>>(v: V) -> Self {
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GenericFormattedValue::Bytes(v.into())
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}
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pub fn from_time<V: Into<ClockTime>>(v: V) -> Self {
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GenericFormattedValue::Time(v.into())
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}
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pub fn from_buffers<V: Into<Buffers>>(v: V) -> Self {
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GenericFormattedValue::Buffers(v.into())
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}
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pub fn from_percent<V: Into<Option<u32>>>(v: V) -> Self {
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GenericFormattedValue::Percent(v.into())
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}
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pub fn from_other(format: Format, v: i64) -> Self {
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GenericFormattedValue::Other(format, v)
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}
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pub fn get_format(&self) -> Format {
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match *self {
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GenericFormattedValue::Undefined(_) => Format::Undefined,
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GenericFormattedValue::Default(_) => Format::Default,
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GenericFormattedValue::Bytes(_) => Format::Bytes,
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GenericFormattedValue::Time(_) => Format::Time,
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GenericFormattedValue::Buffers(_) => Format::Buffers,
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GenericFormattedValue::Percent(_) => Format::Percent,
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GenericFormattedValue::Other(f, _) => f,
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}
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}
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pub fn get_value(&self) -> i64 {
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match *self {
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GenericFormattedValue::Undefined(v) => v,
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GenericFormattedValue::Default(v) => v.map(|v| v as i64).unwrap_or(-1),
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GenericFormattedValue::Bytes(v) => v.map(|v| v as i64).unwrap_or(-1),
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GenericFormattedValue::Time(v) => v.map(|v| v as i64).unwrap_or(-1),
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GenericFormattedValue::Buffers(v) => v.map(|v| v as i64).unwrap_or(-1),
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GenericFormattedValue::Percent(v) => v.map(i64::from).unwrap_or(-1),
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GenericFormattedValue::Other(_, v) => v,
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}
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}
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pub fn try_into<F: FormattedValue>(self) -> Result<F, Self> {
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if F::get_default_format() == self.get_format()
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|| F::get_default_format() == Format::Undefined
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{
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Ok(unsafe { F::from_raw(self.get_format(), self.to_raw_value()) })
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} else {
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Err(self)
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}
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}
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pub fn try_into_undefined(self) -> Result<i64, Self> {
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if let GenericFormattedValue::Undefined(v) = self {
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Ok(v)
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} else {
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Err(self)
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}
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}
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pub fn try_into_default(self) -> Result<Default, Self> {
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if let GenericFormattedValue::Default(v) = self {
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Ok(v)
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} else {
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Err(self)
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}
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}
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pub fn try_into_bytes(self) -> Result<Bytes, Self> {
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if let GenericFormattedValue::Bytes(v) = self {
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Ok(v)
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} else {
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Err(self)
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}
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}
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pub fn try_into_time(self) -> Result<ClockTime, Self> {
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if let GenericFormattedValue::Time(v) = self {
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Ok(v)
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} else {
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Err(self)
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}
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}
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pub fn try_into_buffers(self) -> Result<Buffers, Self> {
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if let GenericFormattedValue::Buffers(v) = self {
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Ok(v)
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} else {
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Err(self)
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}
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}
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pub fn try_into_percent(self) -> Result<Option<u32>, Self> {
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if let GenericFormattedValue::Percent(v) = self {
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Ok(v)
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} else {
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Err(self)
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}
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}
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pub fn try_into_other(self) -> Result<(Format, i64), Self> {
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if let GenericFormattedValue::Other(f, v) = self {
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Ok((f, v))
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} else {
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Err(self)
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}
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}
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}
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macro_rules! impl_op_same(
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($name:ident, $op:ident, $op_name:ident, $op_assign:ident, $op_assign_name:ident, $e:expr) => {
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impl ops::$op<$name> for $name {
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type Output = $name;
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fn $op_name(self, other: $name) -> $name {
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match (self.0, other.0) {
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(Some(a), Some(b)) => $name(Some($e(a, b))),
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_ => $name(None),
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}
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}
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}
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impl<'a> ops::$op<&'a $name> for $name {
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type Output = $name;
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fn $op_name(self, other: &'a $name) -> $name {
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self.$op_name(*other)
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}
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}
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impl ops::$op_assign<$name> for $name {
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fn $op_assign_name(&mut self, other: $name) {
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match (self.0, other.0) {
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(Some(a), Some(b)) => self.0 = Some($e(a, b)),
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_ => self.0 = None,
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}
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}
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}
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impl<'a> ops::$op_assign<&'a $name> for $name {
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fn $op_assign_name(&mut self, other: &'a $name) {
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self.$op_assign_name(*other)
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}
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}
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};
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);
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macro_rules! impl_op_u64(
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($name:ident, $op:ident, $op_name:ident, $op_assign:ident, $op_assign_name:ident, $e:expr) => {
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impl ops::$op<u64> for $name {
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type Output = $name;
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fn $op_name(self, other: u64) -> $name {
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match self.0 {
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Some(a) => $name(Some($e(a, other))),
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_ => $name(None),
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}
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}
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}
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impl<'a> ops::$op<&'a u64> for $name {
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type Output = $name;
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fn $op_name(self, other: &'a u64) -> $name {
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self.$op_name(*other)
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}
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}
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impl ops::$op_assign<u64> for $name {
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fn $op_assign_name(&mut self, other: u64) {
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match self.0 {
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Some(a) => self.0 = Some($e(a, other)),
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_ => self.0 = None,
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}
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}
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}
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impl<'a> ops::$op_assign<&'a u64> for $name {
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fn $op_assign_name(&mut self, other: &'a u64) {
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self.$op_assign_name(*other)
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}
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}
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};
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);
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macro_rules! impl_format_value_traits(
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($name:ident, $format:ident, $format_value:ident) => {
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impl From<$name> for GenericFormattedValue {
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fn from(v: $name) -> GenericFormattedValue {
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GenericFormattedValue::$format_value(v)
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}
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}
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impl FormattedValue for $name {
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fn get_default_format() -> Format {
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Format::$format
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}
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fn try_from(v: GenericFormattedValue) -> Option<Self> {
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if let GenericFormattedValue::$format_value(v) = v {
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Some(v)
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} else {
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None
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}
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}
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fn get_format(&self) -> Format {
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Format::$format
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}
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unsafe fn from_raw(format: Format, value: i64) -> Self {
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debug_assert_eq!(format, Format::$format);
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if value == -1 {
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$name(None)
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} else {
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$name(Some(value as u64))
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}
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}
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unsafe fn to_raw_value(&self) -> i64 {
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self.0.map(|v| v as i64).unwrap_or(-1)
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}
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}
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impl SpecificFormattedValue for $name { }
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impl From<u64> for $name {
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fn from(v: u64) -> $name {
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$name(Some(v))
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}
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}
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impl From<Option<u64>> for $name {
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fn from(v: Option<u64>) -> $name {
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$name(v)
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}
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}
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impl Into<Option<u64>> for $name {
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fn into(self) -> Option<u64> {
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self.0
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}
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}
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impl ops::Deref for $name {
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type Target = Option<u64>;
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fn deref(&self) -> &Option<u64> {
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&self.0
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}
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}
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impl ops::DerefMut for $name {
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fn deref_mut(&mut self) -> &mut Option<u64> {
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&mut self.0
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}
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}
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impl AsRef<Option<u64>> for $name {
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fn as_ref(&self) -> &Option<u64> {
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&self.0
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}
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}
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impl AsMut<Option<u64>> for $name {
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fn as_mut(&mut self) -> &mut Option<u64> {
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&mut self.0
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}
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}
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impl_op_same!($name, Add, add, AddAssign, add_assign, |a, b| a + b);
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impl_op_same!($name, Sub, sub, SubAssign, sub_assign, |a, b| a - b);
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impl_op_same!($name, Mul, mul, MulAssign, mul_assign, |a, b| a * b);
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impl_op_same!($name, Div, div, DivAssign, div_assign, |a, b| a / b);
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impl_op_same!($name, Rem, rem, RemAssign, rem_assign, |a, b| a % b);
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impl_op_u64!($name, Mul, mul, MulAssign, mul_assign, |a, b| a * b);
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impl_op_u64!($name, Div, div, DivAssign, div_assign, |a, b| a / b);
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impl_op_u64!($name, Rem, rem, RemAssign, rem_assign, |a, b| a % b);
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impl ops::Mul<$name> for u64 {
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type Output = $name;
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fn mul(self, other: $name) -> $name {
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other.mul(self)
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}
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}
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impl<'a> ops::Mul<&'a $name> for u64 {
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type Output = $name;
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fn mul(self, other: &'a $name) -> $name {
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other.mul(self)
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}
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}
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impl MulDiv<$name> for $name {
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type Output = $name;
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fn mul_div_floor(self, num: $name, denom: $name) -> Option<Self::Output> {
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match (self.0, num.0, denom.0) {
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(Some(s), Some(n), Some(d)) => s.mul_div_floor(n, d).map(|v| $name(Some(v))),
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_ => Some($name(None)),
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}
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}
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fn mul_div_round(self, num: $name, denom: $name) -> Option<Self::Output> {
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match (self.0, num.0, denom.0) {
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(Some(s), Some(n), Some(d)) => s.mul_div_round(n, d).map(|v| $name(Some(v))),
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_ => Some($name(None)),
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}
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}
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fn mul_div_ceil(self, num: $name, denom: $name) -> Option<Self::Output> {
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match (self.0, num.0, denom.0) {
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(Some(s), Some(n), Some(d)) => s.mul_div_ceil(n, d).map(|v| $name(Some(v))),
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_ => Some($name(None)),
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}
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}
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}
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impl<'a> MulDiv<&'a $name> for $name {
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type Output = $name;
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fn mul_div_floor(self, num: &$name, denom: &$name) -> Option<Self::Output> {
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self.mul_div_floor(*num, *denom)
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}
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fn mul_div_round(self, num: &$name, denom: &$name) -> Option<Self::Output> {
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self.mul_div_round(*num, *denom)
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}
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fn mul_div_ceil(self, num: &$name, denom: &$name) -> Option<Self::Output> {
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self.mul_div_ceil(*num, *denom)
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}
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}
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impl<'a> MulDiv<u64> for $name {
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type Output = $name;
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fn mul_div_floor(self, num: u64, denom: u64) -> Option<Self::Output> {
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self.mul_div_floor($name(Some(num)), $name(Some(denom)))
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}
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fn mul_div_round(self, num: u64, denom: u64) -> Option<Self::Output> {
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self.mul_div_round($name(Some(num)), $name(Some(denom)))
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}
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fn mul_div_ceil(self, num: u64, denom: u64) -> Option<Self::Output> {
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self.mul_div_ceil($name(Some(num)), $name(Some(denom)))
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}
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}
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impl<'a> MulDiv<&'a u64> for $name {
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type Output = $name;
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fn mul_div_floor(self, num: &u64, denom: &u64) -> Option<Self::Output> {
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self.mul_div_floor(*num, *denom)
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}
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fn mul_div_round(self, num: &u64, denom: &u64) -> Option<Self::Output> {
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self.mul_div_round(*num, *denom)
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}
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fn mul_div_ceil(self, num: &u64, denom: &u64) -> Option<Self::Output> {
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self.mul_div_ceil(*num, *denom)
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}
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}
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};
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);
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impl_format_value_traits!(Default, Default, Default);
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impl_format_value_traits!(Bytes, Bytes, Bytes);
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impl_format_value_traits!(ClockTime, Time, Time);
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impl_format_value_traits!(Buffers, Buffers, Buffers);
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