forked from mirrors/gstreamer-rs
535 lines
18 KiB
Rust
535 lines
18 KiB
Rust
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// Copyright (C) 2018 François Laignel <fengalin@free.fr>
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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 glib;
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use glib::{StaticType, ToValue};
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use num_rational::Rational32;
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use serde::de;
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use serde::de::{Deserialize, Deserializer, SeqAccess, Visitor};
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use serde::ser;
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use serde::ser::{Serialize, Serializer, SerializeTuple};
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use std::{fmt, mem};
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use DateTime;
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use Sample;
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use value::*;
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pub const ARRAY_TYPE_NAME: &'static str = "Array";
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pub const LIST_TYPE_NAME: &'static str = "List";
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fn get_other_type_id<T: StaticType>() -> usize {
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match T::static_type() {
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glib::Type::Other(type_id) => type_id,
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type_ => panic!("Expecting `Other` variant, found `{}`", type_),
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}
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}
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lazy_static! {
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pub(crate) static ref ARRAY_OTHER_TYPE_ID: usize = get_other_type_id::<Array>();
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pub(crate) static ref BITMASK_OTHER_TYPE_ID: usize = get_other_type_id::<Bitmask>();
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pub(crate) static ref DATE_TIME_OTHER_TYPE_ID: usize = get_other_type_id::<DateTime>();
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pub(crate) static ref FRACTION_OTHER_TYPE_ID: usize = get_other_type_id::<Fraction>();
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pub(crate) static ref FRACTION_RANGE_OTHER_TYPE_ID: usize =
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get_other_type_id::<FractionRange>();
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pub(crate) static ref INT_RANGE_I32_OTHER_TYPE_ID: usize =
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get_other_type_id::<IntRange<i32>>();
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pub(crate) static ref INT_RANGE_I64_OTHER_TYPE_ID: usize =
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get_other_type_id::<IntRange<i64>>();
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pub(crate) static ref LIST_OTHER_TYPE_ID: usize = get_other_type_id::<List>();
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pub(crate) static ref SAMPLE_OTHER_TYPE_ID: usize = get_other_type_id::<Sample>();
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}
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impl<'a> Serialize for Fraction {
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fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
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self.0.serialize(serializer)
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}
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}
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impl<'de> Deserialize<'de> for Fraction {
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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
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Rational32::deserialize(deserializer)
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.and_then(|rational| Ok(Fraction::new(*rational.numer(), *rational.denom())))
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}
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}
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macro_rules! ser_value (
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($value:expr, $t_str:expr, $t:ty, $ser_closure:expr) => (
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{
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let value = $value.get::<$t>().unwrap();
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$ser_closure($t_str, value)
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}
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);
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($value:expr, $ser_closure:expr) => (
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match $value.type_() {
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glib::Type::I8 => ser_value!($value, "i8", i8, $ser_closure),
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glib::Type::U8 => ser_value!($value, "ui8", u8, $ser_closure),
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glib::Type::Bool => ser_value!($value, "bool", bool, $ser_closure),
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glib::Type::I32 => ser_value!($value, "i32", i32, $ser_closure),
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glib::Type::U32 => ser_value!($value, "u32", u32, $ser_closure),
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glib::Type::I64 => ser_value!($value, "i64", i64, $ser_closure),
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glib::Type::U64 => ser_value!($value, "u64", u64, $ser_closure),
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glib::Type::F32 => ser_value!($value, "f32", f32, $ser_closure),
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glib::Type::F64 => ser_value!($value, "f64", f64, $ser_closure),
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glib::Type::String => ser_value!($value, "String", String, $ser_closure),
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glib::Type::Other(type_id) => {
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if *ARRAY_OTHER_TYPE_ID == type_id {
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ser_value!($value, ARRAY_TYPE_NAME, Array, $ser_closure)
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} else if *BITMASK_OTHER_TYPE_ID == type_id {
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ser_value!($value, "Bitmask", Bitmask, $ser_closure)
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} else if *DATE_TIME_OTHER_TYPE_ID == type_id {
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ser_value!($value, "DateTime", DateTime, $ser_closure)
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} else if *FRACTION_OTHER_TYPE_ID == type_id {
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ser_value!($value, "Fraction", Fraction, $ser_closure)
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} else if *FRACTION_RANGE_OTHER_TYPE_ID == type_id {
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ser_value!($value, "FractionRange", FractionRange, $ser_closure)
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} else if *INT_RANGE_I32_OTHER_TYPE_ID == type_id {
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ser_value!($value, "IntRange<i32>", IntRange<i32>, $ser_closure)
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} else if *INT_RANGE_I64_OTHER_TYPE_ID == type_id {
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ser_value!($value, "IntRange<i64>", IntRange<i64>, $ser_closure)
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} else if *LIST_OTHER_TYPE_ID == type_id {
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ser_value!($value, LIST_TYPE_NAME, List, $ser_closure)
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} else if *SAMPLE_OTHER_TYPE_ID == type_id {
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ser_value!($value, "Sample", Sample, $ser_closure)
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} else {
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Err(
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ser::Error::custom(
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format!("unimplemented `Value` serialization for type {}",
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glib::Type::Other(type_id),
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)
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)
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)
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}
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}
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type_ => {
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Err(
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ser::Error::custom(
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format!("unimplemented `Value` serialization for type {}", type_)
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)
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)
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}
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}
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)
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);
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pub(crate) struct SendValue(glib::SendValue);
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impl SendValue {
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pub(crate) fn from(send_value: glib::SendValue) -> Self {
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SendValue(send_value)
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}
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}
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impl From<SendValue> for glib::SendValue {
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fn from(send_value: SendValue) -> Self {
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send_value.0
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}
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}
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impl Serialize for SendValue {
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fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
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ser_value!(self.0, |type_, value| {
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let mut tup = serializer.serialize_tuple(2)?;
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tup.serialize_element(type_)?;
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tup.serialize_element(&value)?;
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tup.end()
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})
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}
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}
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macro_rules! impl_ser_send_value_collection (
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($t:ident) => (
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impl<'a> Serialize for $t<'a> {
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fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
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let send_value_vec = unsafe {
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mem::transmute::<&[glib::SendValue], &[SendValue]>(
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self.as_slice()
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)
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};
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send_value_vec.serialize(serializer)
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}
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}
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);
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);
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impl_ser_send_value_collection!(Array);
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impl_ser_send_value_collection!(List);
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macro_rules! de_value(
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($outer_type:expr, $type_name:expr, $seq:expr, $t:ty) => (
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$seq
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.next_element::<$t>()?
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.ok_or_else(||
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de::Error::custom(format!(
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"Expected a value for `{}` with type {:?}",
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$outer_type,
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$type_name,
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))
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)?
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.to_value()
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);
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);
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macro_rules! de_send_value(
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($type_name:expr, $seq:expr, $t:ty) => (
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SendValue::from(
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de_value!("Value", $type_name, $seq, $t)
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.try_into_send_value::<$t>()
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.map_err(|_|
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de::Error::custom(format!(
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"Failed to convert `Value` with type {:?} to `SendValue`",
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$type_name,
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))
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)?
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)
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);
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($type_name:expr, $seq:expr) => (
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match $type_name.as_str() {
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"i8" => de_send_value!($type_name, $seq, i8),
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"u8" => de_send_value!($type_name, $seq, u8),
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"bool" => de_send_value!($type_name, $seq, bool),
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"i32" => de_send_value!($type_name, $seq, i32),
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"u32" => de_send_value!($type_name, $seq, u32),
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"i64" => de_send_value!($type_name, $seq, i64),
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"u64" => de_send_value!($type_name, $seq, u64),
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"f32" => de_send_value!($type_name, $seq, f32),
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"f64" => de_send_value!($type_name, $seq, f64),
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"String" => de_send_value!($type_name, $seq, String),
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"Array" => de_send_value!($type_name, $seq, Array),
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"Bitmask" => de_send_value!($type_name, $seq, Bitmask),
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"DateTime" => de_send_value!($type_name, $seq, DateTime),
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"Fraction" => de_send_value!($type_name, $seq, Fraction),
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"FractionRange" => de_send_value!($type_name, $seq, FractionRange),
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"IntRange<i32>" => de_send_value!($type_name, $seq, IntRange<i32>),
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"IntRange<i64>" => de_send_value!($type_name, $seq, IntRange<i64>),
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"Sample" => de_send_value!($type_name, $seq, Sample),
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_ => return Err(
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de::Error::custom(
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format!(
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"unimplemented deserialization for `Value` with type `{}`",
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$type_name,
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),
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)
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),
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}
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);
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);
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struct SendValueVisitor;
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impl<'de> Visitor<'de> for SendValueVisitor {
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type Value = SendValue;
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fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
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formatter.write_str("a tuple: (name, value)")
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}
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fn visit_seq<A: SeqAccess<'de>>(self, mut seq: A) -> Result<Self::Value, A::Error> {
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let type_name = seq.next_element::<String>()?
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.ok_or(de::Error::custom("Expected a value for `Value` type"))?;
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Ok(de_send_value!(type_name, seq))
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}
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}
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impl<'de> Deserialize<'de> for SendValue {
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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
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deserializer.deserialize_tuple(2, SendValueVisitor{})
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}
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}
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macro_rules! impl_de_send_value_collection (
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($t:ident) => {
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impl<'a, 'de> Deserialize<'de> for $t<'a> {
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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
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let send_value_vec = Vec::<SendValue>::deserialize(deserializer)?;
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Ok($t::from_owned(unsafe{
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mem::transmute::<Vec<SendValue>, Vec<glib::SendValue>>(send_value_vec)
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}))
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}
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}
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}
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);
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impl_de_send_value_collection!(Array);
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impl_de_send_value_collection!(List);
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#[cfg(test)]
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mod tests {
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extern crate ron;
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extern crate serde_json;
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#[test]
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fn test_serialize_simple() {
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use Fraction;
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use FractionRange;
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use IntRange;
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use Bitmask;
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::init().unwrap();
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let mut pretty_config = ron::ser::PrettyConfig::default();
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pretty_config.new_line = "".to_string();
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// Fraction
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let fraction = Fraction::new(1, 3);
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let res = ron::ser::to_string_pretty(&fraction, pretty_config.clone());
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assert_eq!(Ok("(1, 3)".to_owned()), res);
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let res = serde_json::to_string(&fraction).unwrap();
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assert_eq!("[1,3]".to_owned(), res);
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// FractionRange
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let fraction_range = FractionRange::new(Fraction::new(1, 3), Fraction::new(1, 2));
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let res = ron::ser::to_string_pretty(&fraction_range, pretty_config.clone());
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assert_eq!(
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Ok(
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concat!(
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"(",
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" min: (1, 3),",
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" max: (1, 2),",
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")"
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)
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.to_owned()
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),
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res,
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);
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let res = serde_json::to_string(&fraction_range).unwrap();
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assert_eq!("{\"min\":[1,3],\"max\":[1,2]}".to_owned(), res);
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// IntRange
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let int_range = IntRange::<i32>::new_with_step(0, 42, 21);
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let res = ron::ser::to_string_pretty(&int_range, pretty_config.clone());
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assert_eq!(
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Ok(
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concat!(
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"(",
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" min: 0,",
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" max: 42,",
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" step: 21,",
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")"
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)
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.to_owned()
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),
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res,
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);
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let res = serde_json::to_string(&int_range).unwrap();
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assert_eq!("{\"min\":0,\"max\":42,\"step\":21}".to_owned(), res);
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// Bitmask
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let bitmask = Bitmask::new(1024 + 128 + 32);
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let res = ron::ser::to_string_pretty(&bitmask, pretty_config.clone());
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assert_eq!(Ok("(1184)".to_owned()), res);
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let res = serde_json::to_string(&bitmask).unwrap();
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assert_eq!("1184".to_owned(), res);
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}
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#[test]
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fn test_serialize_collections() {
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use glib::value::ToValue;
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use Array;
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||
|
|
use Fraction;
|
||
|
|
use List;
|
||
|
|
|
||
|
|
::init().unwrap();
|
||
|
|
|
||
|
|
let mut pretty_config = ron::ser::PrettyConfig::default();
|
||
|
|
pretty_config.new_line = "".to_string();
|
||
|
|
|
||
|
|
// Array
|
||
|
|
let value_13 = Fraction::new(1, 3).to_value();
|
||
|
|
let send_value_13 = value_13.try_into_send_value::<Fraction>().unwrap();
|
||
|
|
|
||
|
|
let value_12 = Fraction::new(1, 2).to_value();
|
||
|
|
let send_value_12 = value_12.try_into_send_value::<Fraction>().unwrap();
|
||
|
|
|
||
|
|
let value_str = "test str".to_value();
|
||
|
|
let send_value_str = value_str.try_into_send_value::<String>().unwrap();
|
||
|
|
|
||
|
|
let array = Array::new(&[&send_value_13, &send_value_12, &send_value_str]);
|
||
|
|
|
||
|
|
let res = ron::ser::to_string_pretty(&array, pretty_config.clone());
|
||
|
|
assert_eq!(
|
||
|
|
Ok(
|
||
|
|
concat!(
|
||
|
|
"[",
|
||
|
|
" (\"Fraction\", (1, 3)),",
|
||
|
|
" (\"Fraction\", (1, 2)),",
|
||
|
|
" (\"String\", \"test str\"),",
|
||
|
|
"]"
|
||
|
|
)
|
||
|
|
.to_owned()
|
||
|
|
),
|
||
|
|
res,
|
||
|
|
);
|
||
|
|
|
||
|
|
let res = serde_json::to_string(&array).unwrap();
|
||
|
|
assert_eq!(
|
||
|
|
"[[\"Fraction\",[1,3]],[\"Fraction\",[1,2]],[\"String\",\"test str\"]]"
|
||
|
|
.to_owned(),
|
||
|
|
res
|
||
|
|
);
|
||
|
|
|
||
|
|
// List
|
||
|
|
let value_12 = Fraction::new(1, 2).to_value();
|
||
|
|
let send_value_12 = value_12.try_into_send_value::<Fraction>().unwrap();
|
||
|
|
|
||
|
|
let value_str = "test str".to_value();
|
||
|
|
let send_value_str = value_str.try_into_send_value::<String>().unwrap();
|
||
|
|
|
||
|
|
let list = List::new(&[&send_value_12, &send_value_str]);
|
||
|
|
|
||
|
|
let res = ron::ser::to_string_pretty(&list, pretty_config.clone());
|
||
|
|
assert_eq!(
|
||
|
|
Ok(
|
||
|
|
concat!(
|
||
|
|
"[",
|
||
|
|
" (\"Fraction\", (1, 2)),",
|
||
|
|
" (\"String\", \"test str\"),",
|
||
|
|
"]"
|
||
|
|
)
|
||
|
|
.to_owned()
|
||
|
|
),
|
||
|
|
res,
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
#[cfg(feature = "ser_de")]
|
||
|
|
#[test]
|
||
|
|
fn test_deserialize_simple() {
|
||
|
|
extern crate ron;
|
||
|
|
extern crate serde_json;
|
||
|
|
|
||
|
|
use Fraction;
|
||
|
|
use FractionRange;
|
||
|
|
use IntRange;
|
||
|
|
use Bitmask;
|
||
|
|
|
||
|
|
::init().unwrap();
|
||
|
|
|
||
|
|
// Fraction
|
||
|
|
let fraction_ron = "(1, 3)";
|
||
|
|
let fraction: Fraction = ron::de::from_str(fraction_ron).unwrap();
|
||
|
|
assert_eq!(fraction.0.numer(), &1);
|
||
|
|
assert_eq!(fraction.0.denom(), &3);
|
||
|
|
|
||
|
|
let fraction_json = "[1,3]";
|
||
|
|
let fraction: Fraction = serde_json::from_str(fraction_json).unwrap();
|
||
|
|
assert_eq!(fraction.0.numer(), &1);
|
||
|
|
assert_eq!(fraction.0.denom(), &3);
|
||
|
|
|
||
|
|
// FractionRange
|
||
|
|
let fraction_range_ron = "(min: (1, 3), max: (1, 2))";
|
||
|
|
let fraction_range: FractionRange = ron::de::from_str(fraction_range_ron).unwrap();
|
||
|
|
assert_eq!(fraction_range.min().0.denom(), &3);
|
||
|
|
assert_eq!(fraction_range.max().0.denom(), &2);
|
||
|
|
|
||
|
|
let fraction_range_json = "{\"min\":[1,3],\"max\":[1,2]}";
|
||
|
|
let fraction_range: FractionRange = serde_json::from_str(fraction_range_json).unwrap();
|
||
|
|
assert_eq!(fraction_range.min().0.denom(), &3);
|
||
|
|
assert_eq!(fraction_range.max().0.denom(), &2);
|
||
|
|
|
||
|
|
// IntRange
|
||
|
|
let int_range_ron = "(min: 0, max: 42, step: 21)";
|
||
|
|
let int_range: IntRange<i32> = ron::de::from_str(int_range_ron).unwrap();
|
||
|
|
assert_eq!(int_range.min(), 0);
|
||
|
|
assert_eq!(int_range.max(), 42);
|
||
|
|
assert_eq!(int_range.step(), 21);
|
||
|
|
|
||
|
|
let int_range_json = "{\"min\":0,\"max\":42,\"step\":21}";
|
||
|
|
let int_range: IntRange<i32> = serde_json::from_str(int_range_json).unwrap();
|
||
|
|
assert_eq!(int_range.min(), 0);
|
||
|
|
assert_eq!(int_range.max(), 42);
|
||
|
|
assert_eq!(int_range.step(), 21);
|
||
|
|
|
||
|
|
// Bitmask
|
||
|
|
let bitmask_ref = Bitmask::new(1024 + 128 + 32);
|
||
|
|
|
||
|
|
let bitmask_ron = "(1184)";
|
||
|
|
let bitmask: Bitmask = ron::de::from_str(bitmask_ron).unwrap();
|
||
|
|
assert_eq!(bitmask_ref, bitmask);
|
||
|
|
|
||
|
|
let bitmask_json = "1184";
|
||
|
|
let bitmask: Bitmask = serde_json::from_str(bitmask_json).unwrap();
|
||
|
|
assert_eq!(bitmask_ref, bitmask);
|
||
|
|
}
|
||
|
|
|
||
|
|
#[cfg(feature = "ser_de")]
|
||
|
|
#[test]
|
||
|
|
fn test_deserialize_collections() {
|
||
|
|
extern crate ron;
|
||
|
|
extern crate serde_json;
|
||
|
|
|
||
|
|
use Array;
|
||
|
|
use Fraction;
|
||
|
|
use List;
|
||
|
|
|
||
|
|
::init().unwrap();
|
||
|
|
|
||
|
|
// Array
|
||
|
|
let array_ron =
|
||
|
|
r#"[
|
||
|
|
("Fraction", (1, 3)),
|
||
|
|
("Fraction", (1, 2)),
|
||
|
|
("String", "test str"),
|
||
|
|
]"#;
|
||
|
|
let array: Array = ron::de::from_str(array_ron).unwrap();
|
||
|
|
let slice = array.as_slice();
|
||
|
|
assert_eq!(3, slice.len());
|
||
|
|
|
||
|
|
let fraction = slice[0].get::<Fraction>().unwrap();
|
||
|
|
assert_eq!(fraction.0.numer(), &1);
|
||
|
|
assert_eq!(fraction.0.denom(), &3);
|
||
|
|
|
||
|
|
let fraction = slice[1].get::<Fraction>().unwrap();
|
||
|
|
assert_eq!(fraction.0.numer(), &1);
|
||
|
|
assert_eq!(fraction.0.denom(), &2);
|
||
|
|
|
||
|
|
assert_eq!("test str".to_owned(), slice[2].get::<String>().unwrap());
|
||
|
|
|
||
|
|
let array_json =
|
||
|
|
r#"[["Fraction",[1,3]],["Fraction",[1,2]],["String","test str"]]"#;
|
||
|
|
let array: Array = serde_json::from_str(array_json).unwrap();
|
||
|
|
let slice = array.as_slice();
|
||
|
|
assert_eq!(3, slice.len());
|
||
|
|
|
||
|
|
let fraction = slice[0].get::<Fraction>().unwrap();
|
||
|
|
assert_eq!(fraction.0.numer(), &1);
|
||
|
|
assert_eq!(fraction.0.denom(), &3);
|
||
|
|
|
||
|
|
let fraction = slice[1].get::<Fraction>().unwrap();
|
||
|
|
assert_eq!(fraction.0.numer(), &1);
|
||
|
|
assert_eq!(fraction.0.denom(), &2);
|
||
|
|
|
||
|
|
assert_eq!("test str".to_owned(), slice[2].get::<String>().unwrap());
|
||
|
|
|
||
|
|
// List
|
||
|
|
let list_ron =
|
||
|
|
r#"[
|
||
|
|
("Fraction", (1, 2)),
|
||
|
|
("String", "test str"),
|
||
|
|
]"#;
|
||
|
|
let list: List = ron::de::from_str(list_ron).unwrap();
|
||
|
|
let slice = list.as_slice();
|
||
|
|
assert_eq!(2, slice.len());
|
||
|
|
|
||
|
|
let fraction = slice[0].get::<Fraction>().unwrap();
|
||
|
|
assert_eq!(fraction.0.numer(), &1);
|
||
|
|
assert_eq!(fraction.0.denom(), &2);
|
||
|
|
|
||
|
|
assert_eq!("test str".to_owned(), slice[1].get::<String>().unwrap());
|
||
|
|
}
|
||
|
|
}
|