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https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
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305 lines
11 KiB
Rust
305 lines
11 KiB
Rust
// 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 serde::de;
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use serde::de::{Deserialize, Deserializer};
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use serde::ser::{Serialize, Serializer};
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use Format;
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use FormattedSegment;
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use FormattedValue;
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use GenericFormattedValue;
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use Segment;
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use SegmentFlags;
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use SpecificFormattedValue;
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#[derive(Serialize, Deserialize)]
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struct FormattedSegmentSerde {
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flags: SegmentFlags,
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rate: f64,
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applied_rate: f64,
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format: Format,
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base: i64,
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offset: i64,
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start: i64,
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stop: i64,
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time: i64,
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position: i64,
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duration: i64,
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}
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impl<T: FormattedValue> Serialize for FormattedSegment<T> {
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fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error> {
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let fmt_seg = unsafe {
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FormattedSegmentSerde {
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flags: self.get_flags(),
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rate: self.get_rate(),
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applied_rate: self.get_applied_rate(),
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format: self.get_format(),
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base: self.get_base().to_raw_value(),
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offset: self.get_offset().to_raw_value(),
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start: self.get_start().to_raw_value(),
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stop: self.get_stop().to_raw_value(),
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time: self.get_time().to_raw_value(),
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position: self.get_position().to_raw_value(),
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duration: self.get_duration().to_raw_value(),
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}
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};
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fmt_seg.serialize(serializer)
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}
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}
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impl<'de> Deserialize<'de> for Segment {
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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
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skip_assert_initialized!();
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FormattedSegmentSerde::deserialize(deserializer).map(|fmt_seg_de| {
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let mut segment = Self::new();
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segment.set_flags(fmt_seg_de.flags);
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segment.set_rate(fmt_seg_de.rate);
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segment.set_applied_rate(fmt_seg_de.applied_rate);
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segment.set_format(fmt_seg_de.format);
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segment.set_base(GenericFormattedValue::new(
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fmt_seg_de.format,
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fmt_seg_de.base,
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));
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segment.set_offset(GenericFormattedValue::new(
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fmt_seg_de.format,
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fmt_seg_de.offset,
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));
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segment.set_start(GenericFormattedValue::new(
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fmt_seg_de.format,
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fmt_seg_de.start,
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));
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segment.set_stop(GenericFormattedValue::new(
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fmt_seg_de.format,
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fmt_seg_de.stop,
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));
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segment.set_time(GenericFormattedValue::new(
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fmt_seg_de.format,
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fmt_seg_de.time,
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));
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segment.set_position(GenericFormattedValue::new(
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fmt_seg_de.format,
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fmt_seg_de.position,
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));
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segment.set_duration(GenericFormattedValue::new(
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fmt_seg_de.format,
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fmt_seg_de.duration,
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));
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segment
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})
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}
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}
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impl<'de, T: FormattedValue + SpecificFormattedValue> Deserialize<'de> for FormattedSegment<T> {
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fn deserialize<D: Deserializer<'de>>(deserializer: D) -> Result<Self, D::Error> {
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skip_assert_initialized!();
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Segment::deserialize(deserializer).and_then(|segment| {
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segment.downcast::<T>().map_err(|segment| {
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de::Error::custom(format!(
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"failed to convert segment with format {:?} to {:?}",
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segment.get_format(),
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T::get_default_format(),
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))
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})
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})
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}
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}
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#[cfg(test)]
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mod tests {
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extern crate ron;
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use ClockTime;
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use Format;
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use GenericFormattedValue;
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use Segment;
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use SegmentFlags;
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#[test]
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fn test_serialize() {
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::init().unwrap();
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let mut segment = Segment::new();
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segment.set_flags(SegmentFlags::RESET | SegmentFlags::SEGMENT);
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segment.set_rate(1f64);
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segment.set_applied_rate(0.9f64);
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segment.set_format(Format::Time);
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segment.set_base(GenericFormattedValue::Time(ClockTime::from_nseconds(123)));
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segment.set_offset(GenericFormattedValue::Time(ClockTime::from_nseconds(42)));
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segment.set_start(GenericFormattedValue::Time(ClockTime::from_nseconds(1024)));
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segment.set_stop(GenericFormattedValue::Time(ClockTime::from_nseconds(2048)));
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segment.set_time(GenericFormattedValue::Time(ClockTime::from_nseconds(1042)));
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segment.set_position(GenericFormattedValue::Time(ClockTime::from_nseconds(256)));
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segment.set_duration(GenericFormattedValue::Time(ClockTime::none()));
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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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let res = ron::ser::to_string_pretty(&segment, pretty_config);
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assert_eq!(
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Ok(concat!(
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"(",
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" flags: (",
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" bits: 9,",
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" ),",
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" rate: 1,",
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" applied_rate: 0.9,",
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" format: Time,",
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" base: 123,",
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" offset: 42,",
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" start: 1024,",
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" stop: 2048,",
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" time: 1042,",
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" position: 256,",
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" duration: -1,",
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")"
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)
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.to_owned()),
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res,
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);
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}
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#[test]
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fn test_deserialize_segment() {
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::init().unwrap();
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let segment_ron = r#"
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(
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flags: (
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bits: 9,
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),
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rate: 1,
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applied_rate: 0.9,
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format: Time,
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base: 123,
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offset: 42,
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start: 1024,
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stop: 2048,
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time: 1042,
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position: 256,
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duration: -1,
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)
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"#;
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let segment: Segment = ron::de::from_str(segment_ron).unwrap();
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assert_eq!(
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segment.get_flags(),
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SegmentFlags::RESET | SegmentFlags::SEGMENT
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);
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assert!((segment.get_rate() - 1f64).abs() < std::f64::EPSILON);
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assert!((segment.get_applied_rate() - 0.9f64).abs() < std::f64::EPSILON);
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assert_eq!(segment.get_format(), Format::Time);
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assert_eq!(
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segment.get_base(),
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GenericFormattedValue::Time(ClockTime::from_nseconds(123))
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);
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assert_eq!(
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segment.get_offset(),
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GenericFormattedValue::Time(ClockTime::from_nseconds(42))
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);
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assert_eq!(
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segment.get_start(),
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GenericFormattedValue::Time(ClockTime::from_nseconds(1024))
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);
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assert_eq!(
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segment.get_stop(),
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GenericFormattedValue::Time(ClockTime::from_nseconds(2048))
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);
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assert_eq!(
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segment.get_time(),
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GenericFormattedValue::Time(ClockTime::from_nseconds(1042))
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);
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assert_eq!(
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segment.get_position(),
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GenericFormattedValue::Time(ClockTime::from_nseconds(256))
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);
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assert_eq!(
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segment.get_duration(),
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GenericFormattedValue::Time(ClockTime::none())
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);
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}
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#[test]
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fn test_deserialize_formatted() {
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use format::Time;
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use FormattedSegment;
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::init().unwrap();
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let segment_ron = r#"
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(
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flags: (
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bits: 9,
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),
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rate: 1,
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applied_rate: 0.9,
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format: Time,
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base: 123,
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offset: 42,
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start: 1024,
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stop: 2048,
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time: 1042,
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position: 256,
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duration: -1,
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)
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"#;
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let fmt_seg: FormattedSegment<Time> = ron::de::from_str(segment_ron).unwrap();
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assert_eq!(
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fmt_seg.get_flags(),
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SegmentFlags::RESET | SegmentFlags::SEGMENT
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);
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assert!((fmt_seg.get_rate() - 1f64).abs() < std::f64::EPSILON);
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assert!((fmt_seg.get_applied_rate() - 0.9f64).abs() < std::f64::EPSILON);
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assert_eq!(fmt_seg.get_format(), Format::Time);
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assert_eq!(fmt_seg.get_base(), ClockTime::from_nseconds(123));
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assert_eq!(fmt_seg.get_offset(), ClockTime::from_nseconds(42));
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assert_eq!(fmt_seg.get_start(), ClockTime::from_nseconds(1024));
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assert_eq!(fmt_seg.get_stop(), ClockTime::from_nseconds(2048));
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assert_eq!(fmt_seg.get_time(), ClockTime::from_nseconds(1042));
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assert_eq!(fmt_seg.get_position(), ClockTime::from_nseconds(256));
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assert_eq!(fmt_seg.get_duration(), ClockTime::none());
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}
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#[test]
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fn test_serde_roundtrip() {
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::init().unwrap();
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let mut segment = Segment::new();
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segment.set_flags(SegmentFlags::RESET | SegmentFlags::SEGMENT);
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segment.set_rate(1f64);
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segment.set_applied_rate(0.9f64);
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segment.set_format(Format::Time);
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segment.set_base(GenericFormattedValue::Time(ClockTime::from_nseconds(123)));
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segment.set_offset(GenericFormattedValue::Time(ClockTime::from_nseconds(42)));
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segment.set_start(GenericFormattedValue::Time(ClockTime::from_nseconds(1024)));
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segment.set_stop(GenericFormattedValue::Time(ClockTime::from_nseconds(2048)));
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segment.set_time(GenericFormattedValue::Time(ClockTime::from_nseconds(1042)));
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segment.set_position(GenericFormattedValue::Time(ClockTime::from_nseconds(256)));
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segment.set_duration(GenericFormattedValue::Time(ClockTime::none()));
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let segment_se = ron::ser::to_string(&segment).unwrap();
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let segment_de: Segment = ron::de::from_str(segment_se.as_str()).unwrap();
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assert_eq!(segment_de.get_flags(), segment.get_flags());
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assert!((segment_de.get_rate() - segment.get_rate()).abs() < std::f64::EPSILON);
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assert!(
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(segment_de.get_applied_rate() - segment.get_applied_rate()).abs() < std::f64::EPSILON
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);
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assert_eq!(segment_de.get_format(), segment.get_format());
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assert_eq!(segment_de.get_base(), segment.get_base());
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assert_eq!(segment_de.get_offset(), segment.get_offset());
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assert_eq!(segment_de.get_start(), segment.get_start());
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assert_eq!(segment_de.get_stop(), segment.get_stop());
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assert_eq!(segment_de.get_time(), segment.get_time());
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assert_eq!(segment_de.get_position(), segment.get_position());
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assert_eq!(segment_de.get_duration(), segment.get_duration());
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}
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}
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