mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-05-20 17:28:49 +00:00
video: implement webp decoder around libwebp-sys2 crate
Unlike webpdec from -bad, this element inherits from GstElement and can decode animated webp data.
This commit is contained in:
parent
359c07203e
commit
d9e727050c
|
@ -22,6 +22,7 @@ members = [
|
||||||
"video/rav1e",
|
"video/rav1e",
|
||||||
"video/rspng",
|
"video/rspng",
|
||||||
"video/hsv",
|
"video/hsv",
|
||||||
|
"video/webp",
|
||||||
"text/wrap",
|
"text/wrap",
|
||||||
"text/json",
|
"text/json",
|
||||||
"text/regex",
|
"text/regex",
|
||||||
|
|
|
@ -2,7 +2,7 @@ import os
|
||||||
|
|
||||||
DIRS = ['audio', 'generic', 'net', 'text', 'utils', 'video']
|
DIRS = ['audio', 'generic', 'net', 'text', 'utils', 'video']
|
||||||
# Plugins whose name is prefixed by 'rs'
|
# Plugins whose name is prefixed by 'rs'
|
||||||
RS_PREFIXED = ['audiofx', 'closedcaption', 'dav1d', 'file', 'json', 'regex']
|
RS_PREFIXED = ['audiofx', 'closedcaption', 'dav1d', 'file', 'json', 'regex', 'webp']
|
||||||
OVERRIDE = {'wrap': 'rstextwrap', 'flavors': 'rsflv'}
|
OVERRIDE = {'wrap': 'rstextwrap', 'flavors': 'rsflv'}
|
||||||
|
|
||||||
|
|
||||||
|
|
|
@ -50,6 +50,9 @@ plugins_rep = {
|
||||||
'video/hsv': 'libgsthsv',
|
'video/hsv': 'libgsthsv',
|
||||||
'text/json': 'libgstrsjson',
|
'text/json': 'libgstrsjson',
|
||||||
'text/regex': 'libgstrsregex',
|
'text/regex': 'libgstrsregex',
|
||||||
|
# FIXME: libwebp-sys2 will build its bundled version on msvc and apple platforms
|
||||||
|
# https://github.com/qnighy/libwebp-sys2-rs/issues/4
|
||||||
|
'video/webp': 'libgstrswebp',
|
||||||
}
|
}
|
||||||
|
|
||||||
exclude = []
|
exclude = []
|
||||||
|
|
55
video/webp/Cargo.toml
Normal file
55
video/webp/Cargo.toml
Normal file
|
@ -0,0 +1,55 @@
|
||||||
|
[package]
|
||||||
|
name = "gst-plugin-webp"
|
||||||
|
version = "0.6.0"
|
||||||
|
authors = ["Mathieu Duponchelle <mathieu@centricular.com>"]
|
||||||
|
license = "LGPL-2.1-or-later"
|
||||||
|
edition = "2018"
|
||||||
|
description = "WebP Plugin"
|
||||||
|
repository = "https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs"
|
||||||
|
|
||||||
|
[dependencies]
|
||||||
|
glib = { git = "https://github.com/gtk-rs/gtk-rs" }
|
||||||
|
once_cell = "1.0"
|
||||||
|
libwebp-sys2 = { version = "0.1.2", features = ["demux", "0_5"] }
|
||||||
|
|
||||||
|
[dependencies.gst]
|
||||||
|
git = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs"
|
||||||
|
features = ["v1_16"]
|
||||||
|
package="gstreamer"
|
||||||
|
|
||||||
|
[dependencies.gst-video]
|
||||||
|
git = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs"
|
||||||
|
features = ["v1_16"]
|
||||||
|
package="gstreamer-video"
|
||||||
|
|
||||||
|
[dev-dependencies]
|
||||||
|
pretty_assertions = "0.7"
|
||||||
|
|
||||||
|
[dev-dependencies.gst-check]
|
||||||
|
git = "https://gitlab.freedesktop.org/gstreamer/gstreamer-rs"
|
||||||
|
package="gstreamer-check"
|
||||||
|
|
||||||
|
[lib]
|
||||||
|
name = "gstrswebp"
|
||||||
|
crate-type = ["cdylib", "rlib"]
|
||||||
|
path = "src/lib.rs"
|
||||||
|
|
||||||
|
[build-dependencies]
|
||||||
|
gst-plugin-version-helper = { path="../../version-helper" }
|
||||||
|
|
||||||
|
[features]
|
||||||
|
# We already use 1.16 which is new enough for static build
|
||||||
|
static = []
|
||||||
|
|
||||||
|
[package.metadata.capi]
|
||||||
|
min_version = "0.7.0"
|
||||||
|
|
||||||
|
[package.metadata.capi.header]
|
||||||
|
enabled = false
|
||||||
|
|
||||||
|
[package.metadata.capi.library]
|
||||||
|
install_subdir = "gstreamer-1.0"
|
||||||
|
versioning = false
|
||||||
|
|
||||||
|
[package.metadata.capi.pkg_config]
|
||||||
|
requires_private = "gstreamer-1.0, gstreamer-video-1.0, gobject-2.0, glib-2.0, gmodule-2.0"
|
3
video/webp/build.rs
Normal file
3
video/webp/build.rs
Normal file
|
@ -0,0 +1,3 @@
|
||||||
|
fn main() {
|
||||||
|
gst_plugin_version_helper::get_info()
|
||||||
|
}
|
397
video/webp/src/dec/imp.rs
Normal file
397
video/webp/src/dec/imp.rs
Normal file
|
@ -0,0 +1,397 @@
|
||||||
|
// Copyright (C) 2021 Mathieu Duponchelle <mathieu@centricular.com>
|
||||||
|
//
|
||||||
|
// This library is free software; you can redistribute it and/or
|
||||||
|
// modify it under the terms of the GNU Library General Public
|
||||||
|
// License as published by the Free Software Foundation; either
|
||||||
|
// version 2 of the License, or (at your option) any later version.
|
||||||
|
//
|
||||||
|
// This library is distributed in the hope that it will be useful,
|
||||||
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
// Library General Public License for more details.
|
||||||
|
//
|
||||||
|
// You should have received a copy of the GNU Library General Public
|
||||||
|
// License along with this library; if not, write to the
|
||||||
|
// Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
|
||||||
|
// Boston, MA 02110-1335, USA.
|
||||||
|
|
||||||
|
use glib::subclass::prelude::*;
|
||||||
|
use gst::prelude::*;
|
||||||
|
use gst::subclass::prelude::*;
|
||||||
|
use gst::{gst_log, gst_trace};
|
||||||
|
|
||||||
|
use libwebp_sys as ffi;
|
||||||
|
use once_cell::sync::Lazy;
|
||||||
|
|
||||||
|
use std::sync::Mutex;
|
||||||
|
|
||||||
|
use std::marker::PhantomData;
|
||||||
|
|
||||||
|
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
|
||||||
|
gst::DebugCategory::new(
|
||||||
|
"webpdec-rs",
|
||||||
|
gst::DebugColorFlags::empty(),
|
||||||
|
Some("WebP decoder"),
|
||||||
|
)
|
||||||
|
});
|
||||||
|
|
||||||
|
struct State {
|
||||||
|
buffers: Vec<gst::Buffer>,
|
||||||
|
total_size: usize,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Default for State {
|
||||||
|
fn default() -> Self {
|
||||||
|
Self {
|
||||||
|
buffers: vec![],
|
||||||
|
total_size: 0,
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
struct Decoder<'a> {
|
||||||
|
decoder: *mut ffi::WebPAnimDecoder,
|
||||||
|
phantom: PhantomData<&'a [u8]>,
|
||||||
|
}
|
||||||
|
|
||||||
|
struct Frame<'a> {
|
||||||
|
buf: &'a [u8],
|
||||||
|
timestamp: i32,
|
||||||
|
}
|
||||||
|
|
||||||
|
struct Info {
|
||||||
|
width: u32,
|
||||||
|
height: u32,
|
||||||
|
frame_count: u32,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl<'a> Decoder<'_> {
|
||||||
|
fn from_data(data: &'a [u8]) -> Option<Self> {
|
||||||
|
unsafe {
|
||||||
|
let mut options = std::mem::MaybeUninit::zeroed();
|
||||||
|
if ffi::WebPAnimDecoderOptionsInit(options.as_mut_ptr()) == 0 {
|
||||||
|
return None;
|
||||||
|
}
|
||||||
|
let mut options = options.assume_init();
|
||||||
|
|
||||||
|
options.use_threads = 1;
|
||||||
|
// TODO: negotiate this with downstream, bearing in mind that
|
||||||
|
// we should be able to tell whether an image contains alpha
|
||||||
|
// using WebPDemuxGetI
|
||||||
|
options.color_mode = ffi::MODE_RGBA;
|
||||||
|
|
||||||
|
let ptr = ffi::WebPAnimDecoderNew(
|
||||||
|
&ffi::WebPData {
|
||||||
|
bytes: data.as_ptr(),
|
||||||
|
size: data.len(),
|
||||||
|
},
|
||||||
|
&options,
|
||||||
|
);
|
||||||
|
|
||||||
|
Some(Self {
|
||||||
|
decoder: ptr,
|
||||||
|
phantom: PhantomData,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn has_more_frames(&self) -> bool {
|
||||||
|
unsafe { ffi::WebPAnimDecoderHasMoreFrames(self.decoder) != 0 }
|
||||||
|
}
|
||||||
|
|
||||||
|
fn get_info(&self) -> Option<Info> {
|
||||||
|
let mut info = std::mem::MaybeUninit::zeroed();
|
||||||
|
unsafe {
|
||||||
|
if ffi::WebPAnimDecoderGetInfo(self.decoder, info.as_mut_ptr()) == 0 {
|
||||||
|
return None;
|
||||||
|
}
|
||||||
|
let info = info.assume_init();
|
||||||
|
Some(Info {
|
||||||
|
width: info.canvas_width,
|
||||||
|
height: info.canvas_height,
|
||||||
|
frame_count: info.frame_count,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn get_next(&mut self) -> Option<Frame> {
|
||||||
|
let mut buf = std::ptr::null_mut();
|
||||||
|
let buf_ptr: *mut *mut u8 = &mut buf;
|
||||||
|
let mut timestamp: i32 = 0;
|
||||||
|
|
||||||
|
if let Some(info) = self.get_info() {
|
||||||
|
unsafe {
|
||||||
|
if ffi::WebPAnimDecoderGetNext(self.decoder, buf_ptr, &mut timestamp) == 0 {
|
||||||
|
return None;
|
||||||
|
}
|
||||||
|
|
||||||
|
assert!(!buf.is_null());
|
||||||
|
|
||||||
|
Some(Frame {
|
||||||
|
buf: std::slice::from_raw_parts(buf, (info.width * info.height * 4) as usize),
|
||||||
|
timestamp,
|
||||||
|
})
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
None
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl Drop for Decoder<'_> {
|
||||||
|
fn drop(&mut self) {
|
||||||
|
unsafe { ffi::WebPAnimDecoderDelete(self.decoder) }
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
pub struct WebPDec {
|
||||||
|
srcpad: gst::Pad,
|
||||||
|
sinkpad: gst::Pad,
|
||||||
|
state: Mutex<State>,
|
||||||
|
}
|
||||||
|
|
||||||
|
impl WebPDec {
|
||||||
|
#![allow(clippy::unnecessary_wraps)]
|
||||||
|
fn sink_chain(
|
||||||
|
&self,
|
||||||
|
pad: &gst::Pad,
|
||||||
|
_element: &super::WebPDec,
|
||||||
|
buffer: gst::Buffer,
|
||||||
|
) -> Result<gst::FlowSuccess, gst::FlowError> {
|
||||||
|
gst_log!(CAT, obj: pad, "Handling buffer {:?}", buffer);
|
||||||
|
|
||||||
|
let mut state = self.state.lock().unwrap();
|
||||||
|
|
||||||
|
state.total_size += buffer.get_size();
|
||||||
|
state.buffers.push(buffer);
|
||||||
|
|
||||||
|
Ok(gst::FlowSuccess::Ok)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn decode(&self, _element: &super::WebPDec) -> Result<(), gst::ErrorMessage> {
|
||||||
|
let mut prev_timestamp: gst::ClockTime = 0.into();
|
||||||
|
let mut state = self.state.lock().unwrap();
|
||||||
|
|
||||||
|
if state.buffers.is_empty() {
|
||||||
|
return Err(gst::error_msg!(
|
||||||
|
gst::StreamError::Decode,
|
||||||
|
["No valid frames decoded before end of stream"]
|
||||||
|
));
|
||||||
|
}
|
||||||
|
|
||||||
|
let mut buf = Vec::with_capacity(state.total_size);
|
||||||
|
|
||||||
|
for buffer in state.buffers.drain(..) {
|
||||||
|
buf.extend_from_slice(&buffer.map_readable().expect("Failed to map buffer"));
|
||||||
|
}
|
||||||
|
|
||||||
|
drop(state);
|
||||||
|
|
||||||
|
let mut decoder = Decoder::from_data(&buf).ok_or_else(|| {
|
||||||
|
gst::error_msg!(gst::StreamError::Decode, ["Failed to decode picture"])
|
||||||
|
})?;
|
||||||
|
|
||||||
|
let info = decoder.get_info().ok_or_else(|| {
|
||||||
|
gst::error_msg!(gst::StreamError::Decode, ["Failed to get animation info"])
|
||||||
|
})?;
|
||||||
|
|
||||||
|
if info.frame_count == 0 {
|
||||||
|
return Err(gst::error_msg!(
|
||||||
|
gst::StreamError::Decode,
|
||||||
|
["No valid frames decoded before end of stream"]
|
||||||
|
));
|
||||||
|
}
|
||||||
|
|
||||||
|
let caps =
|
||||||
|
gst_video::VideoInfo::builder(gst_video::VideoFormat::Rgba, info.width, info.height)
|
||||||
|
.fps((0, 1))
|
||||||
|
.build()
|
||||||
|
.unwrap()
|
||||||
|
.to_caps()
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
// We push our own time segment, regardless of what the
|
||||||
|
// input Segment may have contained. WebP is self-contained,
|
||||||
|
// and its timestamps are our only time source
|
||||||
|
let segment = gst::FormattedSegment::<gst::ClockTime>::new();
|
||||||
|
|
||||||
|
let _ = self.srcpad.push_event(gst::event::Caps::new(&caps));
|
||||||
|
let _ = self.srcpad.push_event(gst::event::Segment::new(&segment));
|
||||||
|
|
||||||
|
while decoder.has_more_frames() {
|
||||||
|
let frame = decoder.get_next().ok_or_else(|| {
|
||||||
|
gst::error_msg!(gst::StreamError::Decode, ["Failed to get next frame"])
|
||||||
|
})?;
|
||||||
|
|
||||||
|
let timestamp = frame.timestamp as u64 * gst::MSECOND;
|
||||||
|
let duration = timestamp - prev_timestamp;
|
||||||
|
|
||||||
|
let mut out_buf =
|
||||||
|
gst::Buffer::with_size((info.width * info.height * 4) as usize).unwrap();
|
||||||
|
{
|
||||||
|
let out_buf_mut = out_buf.get_mut().unwrap();
|
||||||
|
out_buf_mut.copy_from_slice(0, frame.buf).unwrap();
|
||||||
|
out_buf_mut.set_pts(prev_timestamp);
|
||||||
|
out_buf_mut.set_duration(duration);
|
||||||
|
}
|
||||||
|
|
||||||
|
prev_timestamp = timestamp;
|
||||||
|
|
||||||
|
match self.srcpad.push(out_buf) {
|
||||||
|
Ok(_) => (),
|
||||||
|
Err(gst::FlowError::Flushing) | Err(gst::FlowError::Eos) => break,
|
||||||
|
Err(flow) => {
|
||||||
|
return Err(gst::error_msg!(
|
||||||
|
gst::StreamError::Failed,
|
||||||
|
["Failed to push buffers: {:?}", flow]
|
||||||
|
));
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
fn sink_event(&self, pad: &gst::Pad, element: &super::WebPDec, event: gst::Event) -> bool {
|
||||||
|
use gst::EventView;
|
||||||
|
|
||||||
|
gst_log!(CAT, obj: pad, "Handling event {:?}", event);
|
||||||
|
match event.view() {
|
||||||
|
EventView::FlushStop(..) => {
|
||||||
|
let mut state = self.state.lock().unwrap();
|
||||||
|
*state = State::default();
|
||||||
|
pad.event_default(Some(element), event)
|
||||||
|
}
|
||||||
|
EventView::Eos(..) => {
|
||||||
|
if let Err(err) = self.decode(element) {
|
||||||
|
element.post_error_message(err);
|
||||||
|
}
|
||||||
|
pad.event_default(Some(element), event)
|
||||||
|
}
|
||||||
|
EventView::Segment(..) => true,
|
||||||
|
_ => pad.event_default(Some(element), event),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
fn src_event(&self, pad: &gst::Pad, element: &super::WebPDec, event: gst::Event) -> bool {
|
||||||
|
use gst::EventView;
|
||||||
|
|
||||||
|
gst_log!(CAT, obj: pad, "Handling event {:?}", event);
|
||||||
|
match event.view() {
|
||||||
|
EventView::Seek(..) => false,
|
||||||
|
_ => pad.event_default(Some(element), event),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
#[glib::object_subclass]
|
||||||
|
impl ObjectSubclass for WebPDec {
|
||||||
|
const NAME: &'static str = "RsWebPDec";
|
||||||
|
type Type = super::WebPDec;
|
||||||
|
type ParentType = gst::Element;
|
||||||
|
|
||||||
|
fn with_class(klass: &Self::Class) -> Self {
|
||||||
|
let templ = klass.get_pad_template("sink").unwrap();
|
||||||
|
let sinkpad = gst::Pad::builder_with_template(&templ, Some("sink"))
|
||||||
|
.chain_function(|pad, parent, buffer| {
|
||||||
|
WebPDec::catch_panic_pad_function(
|
||||||
|
parent,
|
||||||
|
|| Err(gst::FlowError::Error),
|
||||||
|
|dec, element| dec.sink_chain(pad, element, buffer),
|
||||||
|
)
|
||||||
|
})
|
||||||
|
.event_function(|pad, parent, event| {
|
||||||
|
WebPDec::catch_panic_pad_function(
|
||||||
|
parent,
|
||||||
|
|| false,
|
||||||
|
|dec, element| dec.sink_event(pad, element, event),
|
||||||
|
)
|
||||||
|
})
|
||||||
|
.build();
|
||||||
|
|
||||||
|
let templ = klass.get_pad_template("src").unwrap();
|
||||||
|
let srcpad = gst::Pad::builder_with_template(&templ, Some("src"))
|
||||||
|
.event_function(|pad, parent, event| {
|
||||||
|
WebPDec::catch_panic_pad_function(
|
||||||
|
parent,
|
||||||
|
|| false,
|
||||||
|
|dec, element| dec.src_event(pad, element, event),
|
||||||
|
)
|
||||||
|
})
|
||||||
|
.build();
|
||||||
|
|
||||||
|
Self {
|
||||||
|
srcpad,
|
||||||
|
sinkpad,
|
||||||
|
state: Mutex::new(State::default()),
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl ObjectImpl for WebPDec {
|
||||||
|
fn constructed(&self, obj: &Self::Type) {
|
||||||
|
self.parent_constructed(obj);
|
||||||
|
|
||||||
|
obj.add_pad(&self.sinkpad).unwrap();
|
||||||
|
obj.add_pad(&self.srcpad).unwrap();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
impl ElementImpl for WebPDec {
|
||||||
|
fn metadata() -> Option<&'static gst::subclass::ElementMetadata> {
|
||||||
|
static ELEMENT_METADATA: Lazy<gst::subclass::ElementMetadata> = Lazy::new(|| {
|
||||||
|
gst::subclass::ElementMetadata::new(
|
||||||
|
"WebP decoder",
|
||||||
|
"Codec/Decoder/Video",
|
||||||
|
"Decodes potentially animated WebP images",
|
||||||
|
"Mathieu Duponchelle <mathieu@centricular.com>",
|
||||||
|
)
|
||||||
|
});
|
||||||
|
|
||||||
|
Some(&*ELEMENT_METADATA)
|
||||||
|
}
|
||||||
|
|
||||||
|
fn pad_templates() -> &'static [gst::PadTemplate] {
|
||||||
|
static PAD_TEMPLATES: Lazy<Vec<gst::PadTemplate>> = Lazy::new(|| {
|
||||||
|
let caps = gst::Caps::builder("image/webp").build();
|
||||||
|
|
||||||
|
let sink_pad_template = gst::PadTemplate::new(
|
||||||
|
"sink",
|
||||||
|
gst::PadDirection::Sink,
|
||||||
|
gst::PadPresence::Always,
|
||||||
|
&caps,
|
||||||
|
)
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
let caps = gst::Caps::builder("video/x-raw")
|
||||||
|
.field("format", &"RGBA")
|
||||||
|
.build();
|
||||||
|
|
||||||
|
let src_pad_template = gst::PadTemplate::new(
|
||||||
|
"src",
|
||||||
|
gst::PadDirection::Src,
|
||||||
|
gst::PadPresence::Always,
|
||||||
|
&caps,
|
||||||
|
)
|
||||||
|
.unwrap();
|
||||||
|
|
||||||
|
vec![src_pad_template, sink_pad_template]
|
||||||
|
});
|
||||||
|
|
||||||
|
PAD_TEMPLATES.as_ref()
|
||||||
|
}
|
||||||
|
|
||||||
|
fn change_state(
|
||||||
|
&self,
|
||||||
|
element: &Self::Type,
|
||||||
|
transition: gst::StateChange,
|
||||||
|
) -> Result<gst::StateChangeSuccess, gst::StateChangeError> {
|
||||||
|
gst_trace!(CAT, obj: element, "Changing state {:?}", transition);
|
||||||
|
|
||||||
|
if transition == gst::StateChange::PausedToReady {
|
||||||
|
*self.state.lock().unwrap() = State::default();
|
||||||
|
}
|
||||||
|
|
||||||
|
self.parent_change_state(element, transition)
|
||||||
|
}
|
||||||
|
}
|
42
video/webp/src/dec/mod.rs
Normal file
42
video/webp/src/dec/mod.rs
Normal file
|
@ -0,0 +1,42 @@
|
||||||
|
// Copyright (C) 2021 Mathieu Duponchelle <mathieu@centricular.com>
|
||||||
|
//
|
||||||
|
// This library is free software; you can redistribute it and/or
|
||||||
|
// modify it under the terms of the GNU Library General Public
|
||||||
|
// License as published by the Free Software Foundation; either
|
||||||
|
// version 2 of the License, or (at your option) any later version.
|
||||||
|
//
|
||||||
|
// This library is distributed in the hope that it will be useful,
|
||||||
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
// Library General Public License for more details.
|
||||||
|
//
|
||||||
|
// You should have received a copy of the GNU Library General Public
|
||||||
|
// License along with this library; if not, write to the
|
||||||
|
// Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
|
||||||
|
// Boston, MA 02110-1335, USA.
|
||||||
|
|
||||||
|
// Example command-line:
|
||||||
|
//
|
||||||
|
// gst-launch-1.0 filesrc location=animated.webp ! webpdec-rs ! videoconvert ! autovideosink
|
||||||
|
|
||||||
|
use glib::prelude::*;
|
||||||
|
|
||||||
|
mod imp;
|
||||||
|
|
||||||
|
glib::wrapper! {
|
||||||
|
pub struct WebPDec(ObjectSubclass<imp::WebPDec>) @extends gst::Element, gst::Object;
|
||||||
|
}
|
||||||
|
|
||||||
|
// GStreamer elements need to be thread-safe. For the private implementation this is automatically
|
||||||
|
// enforced but for the public wrapper type we need to specify this manually.
|
||||||
|
unsafe impl Send for WebPDec {}
|
||||||
|
unsafe impl Sync for WebPDec {}
|
||||||
|
|
||||||
|
pub fn register(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
|
||||||
|
gst::Element::register(
|
||||||
|
Some(plugin),
|
||||||
|
"webpdec-rs",
|
||||||
|
gst::Rank::Primary,
|
||||||
|
WebPDec::static_type(),
|
||||||
|
)
|
||||||
|
}
|
35
video/webp/src/lib.rs
Normal file
35
video/webp/src/lib.rs
Normal file
|
@ -0,0 +1,35 @@
|
||||||
|
// Copyright (C) 2021 Mathieu Duponchelle <mathieu@centricular.com>
|
||||||
|
//
|
||||||
|
// This library is free software; you can redistribute it and/or
|
||||||
|
// modify it under the terms of the GNU Library General Public
|
||||||
|
// License as published by the Free Software Foundation; either
|
||||||
|
// version 2 of the License, or (at your option) any later version.
|
||||||
|
//
|
||||||
|
// This library is distributed in the hope that it will be useful,
|
||||||
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
// Library General Public License for more details.
|
||||||
|
//
|
||||||
|
// You should have received a copy of the GNU Library General Public
|
||||||
|
// License along with this library; if not, write to the
|
||||||
|
// Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
|
||||||
|
// Boston, MA 02110-1335, USA.
|
||||||
|
|
||||||
|
mod dec;
|
||||||
|
|
||||||
|
fn plugin_init(plugin: &gst::Plugin) -> Result<(), glib::BoolError> {
|
||||||
|
dec::register(plugin)?;
|
||||||
|
Ok(())
|
||||||
|
}
|
||||||
|
|
||||||
|
gst::plugin_define!(
|
||||||
|
rswebp,
|
||||||
|
env!("CARGO_PKG_DESCRIPTION"),
|
||||||
|
plugin_init,
|
||||||
|
concat!(env!("CARGO_PKG_VERSION"), "-", env!("COMMIT_ID")),
|
||||||
|
"LGPL",
|
||||||
|
env!("CARGO_PKG_NAME"),
|
||||||
|
env!("CARGO_PKG_NAME"),
|
||||||
|
env!("CARGO_PKG_REPOSITORY"),
|
||||||
|
env!("BUILD_REL_DATE")
|
||||||
|
);
|
BIN
video/webp/tests/animated.webp
Normal file
BIN
video/webp/tests/animated.webp
Normal file
Binary file not shown.
After Width: | Height: | Size: 4.8 KiB |
71
video/webp/tests/webpdec.rs
Normal file
71
video/webp/tests/webpdec.rs
Normal file
|
@ -0,0 +1,71 @@
|
||||||
|
// Copyright (C) 2021 Mathieu Duponchelle <mathieu@centricular.com>
|
||||||
|
//
|
||||||
|
// This library is free software; you can redistribute it and/or
|
||||||
|
// modify it under the terms of the GNU Library General Public
|
||||||
|
// License as published by the Free Software Foundation; either
|
||||||
|
// version 2 of the License, or (at your option) any later version.
|
||||||
|
//
|
||||||
|
// This library is distributed in the hope that it will be useful,
|
||||||
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||||
|
// Library General Public License for more details.
|
||||||
|
//
|
||||||
|
// You should have received a copy of the GNU Library General Public
|
||||||
|
// License along with this library; if not, write to the
|
||||||
|
// Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
|
||||||
|
// Boston, MA 02110-1335, USA.
|
||||||
|
|
||||||
|
use gst::prelude::*;
|
||||||
|
use pretty_assertions::assert_eq;
|
||||||
|
|
||||||
|
fn init() {
|
||||||
|
use std::sync::Once;
|
||||||
|
static INIT: Once = Once::new();
|
||||||
|
|
||||||
|
INIT.call_once(|| {
|
||||||
|
gst::init().unwrap();
|
||||||
|
gstrswebp::plugin_register_static().expect("webpenc-rs test");
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
#[test]
|
||||||
|
fn test_decode() {
|
||||||
|
init();
|
||||||
|
let data = include_bytes!("animated.webp").as_ref();
|
||||||
|
let mut h = gst_check::Harness::new("webpdec-rs");
|
||||||
|
|
||||||
|
h.set_src_caps_str("image/webp");
|
||||||
|
|
||||||
|
let buf = gst::Buffer::from_slice(data);
|
||||||
|
assert_eq!(h.push(buf), Ok(gst::FlowSuccess::Ok));
|
||||||
|
h.push_event(gst::event::Eos::new());
|
||||||
|
|
||||||
|
let mut expected_timestamp: gst::ClockTime = 0.into();
|
||||||
|
let mut count = 0;
|
||||||
|
let expected_duration: gst::ClockTime = 40_000_000.into();
|
||||||
|
|
||||||
|
while let Some(buf) = h.try_pull() {
|
||||||
|
assert_eq!(buf.get_pts(), expected_timestamp);
|
||||||
|
assert_eq!(buf.get_duration(), expected_duration);
|
||||||
|
|
||||||
|
expected_timestamp += expected_duration;
|
||||||
|
count += 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
assert_eq!(count, 10);
|
||||||
|
|
||||||
|
let caps = h
|
||||||
|
.get_sinkpad()
|
||||||
|
.expect("harness has no sinkpad")
|
||||||
|
.get_current_caps()
|
||||||
|
.expect("pad has no caps");
|
||||||
|
assert_eq!(
|
||||||
|
caps,
|
||||||
|
gst_video::VideoInfo::builder(gst_video::VideoFormat::Rgba, 400, 400)
|
||||||
|
.fps((0, 1))
|
||||||
|
.build()
|
||||||
|
.unwrap()
|
||||||
|
.to_caps()
|
||||||
|
.unwrap()
|
||||||
|
);
|
||||||
|
}
|
Loading…
Reference in a new issue