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https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
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102 lines
3.3 KiB
Rust
102 lines
3.3 KiB
Rust
// Copyright (C) 2020 Natanael Mojica <neithanmo@gmail.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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//
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// SPDX-License-Identifier: MIT OR Apache-2.0
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use gst::glib;
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use gst::prelude::*;
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mod imp;
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#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Clone, Copy, glib::Enum)]
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#[repr(u32)]
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#[enum_type(name = "GstRsPngCompressionLevel")]
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pub(crate) enum CompressionLevel {
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#[enum_value(name = "Default: Use the default compression level.", nick = "default")]
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Default,
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#[enum_value(name = "Fast: A fast compression algorithm.", nick = "fast")]
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Fast,
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#[enum_value(
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name = "Best: Uses the algorithm with the best results.",
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nick = "best"
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)]
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Best,
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#[enum_value(name = "Huffman: Huffman compression.", nick = "huffman")]
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Huffman,
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#[enum_value(name = "Rle: Rle compression.", nick = "rle")]
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Rle,
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}
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#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Hash, Clone, Copy, glib::Enum)]
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#[repr(u32)]
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#[enum_type(name = "GstRsPngFilterType")]
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pub(crate) enum FilterType {
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#[enum_value(
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name = "NoFilter: No filtering applied to the output.",
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nick = "nofilter"
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)]
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NoFilter,
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#[enum_value(name = "Sub: filter applied to each pixel.", nick = "sub")]
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Sub,
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#[enum_value(name = "Up: Up filter similar to Sub.", nick = "up")]
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Up,
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#[enum_value(
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name = "Avg: The Average filter uses the average of the two neighboring pixels.",
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nick = "avg"
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)]
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Avg,
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#[enum_value(
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name = "Paeth: The Paeth filter computes a simple linear function of the three neighboring pixels.",
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nick = "paeth"
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)]
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Paeth,
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}
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impl From<CompressionLevel> for png::Compression {
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#[allow(deprecated)]
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fn from(value: CompressionLevel) -> Self {
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match value {
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CompressionLevel::Default => png::Compression::Default,
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CompressionLevel::Fast => png::Compression::Fast,
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CompressionLevel::Best => png::Compression::Best,
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CompressionLevel::Huffman => png::Compression::Huffman,
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CompressionLevel::Rle => png::Compression::Rle,
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}
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}
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}
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impl From<FilterType> for png::FilterType {
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fn from(value: FilterType) -> Self {
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match value {
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FilterType::NoFilter => png::FilterType::NoFilter,
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FilterType::Sub => png::FilterType::Sub,
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FilterType::Up => png::FilterType::Up,
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FilterType::Avg => png::FilterType::Avg,
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FilterType::Paeth => png::FilterType::Paeth,
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}
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}
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}
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glib::wrapper! {
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pub struct PngEncoder(ObjectSubclass<imp::PngEncoder>) @extends gst_video::VideoEncoder, gst::Element, gst::Object;
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}
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pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
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#[cfg(feature = "doc")]
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CompressionLevel::static_type().mark_as_plugin_api(gst::PluginAPIFlags::empty());
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#[cfg(feature = "doc")]
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FilterType::static_type().mark_as_plugin_api(gst::PluginAPIFlags::empty());
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gst::Element::register(
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Some(plugin),
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"rspngenc",
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gst::Rank::PRIMARY,
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PngEncoder::static_type(),
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)
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}
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