mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-06-12 19:29:24 +00:00
320 lines
9.3 KiB
Rust
320 lines
9.3 KiB
Rust
// Copyright (C) 2016-2017 Sebastian Dröge <sebastian@centricular.com>
|
|
// 2016 Luis de Bethencourt <luisbg@osg.samsung.com>
|
|
// 2018 François Laignel <fengalin@free.fr>
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
use glib::subclass;
|
|
use glib::subclass::prelude::*;
|
|
use gst::prelude::*;
|
|
use gst::subclass::prelude::*;
|
|
use gst::{gst_debug, gst_error, gst_info, gst_trace};
|
|
use gst_base::subclass::prelude::*;
|
|
|
|
use std::fs::File;
|
|
use std::io::Write;
|
|
use std::sync::Mutex;
|
|
|
|
use url::Url;
|
|
|
|
use crate::file_location::FileLocation;
|
|
|
|
const DEFAULT_LOCATION: Option<FileLocation> = None;
|
|
|
|
#[derive(Debug)]
|
|
struct Settings {
|
|
location: Option<FileLocation>,
|
|
}
|
|
|
|
impl Default for Settings {
|
|
fn default() -> Self {
|
|
Settings {
|
|
location: DEFAULT_LOCATION,
|
|
}
|
|
}
|
|
}
|
|
|
|
static PROPERTIES: [subclass::Property; 1] = [subclass::Property("location", |name| {
|
|
glib::ParamSpec::string(
|
|
name,
|
|
"File Location",
|
|
"Location of the file to write",
|
|
None,
|
|
glib::ParamFlags::READWRITE,
|
|
)
|
|
})];
|
|
|
|
enum State {
|
|
Stopped,
|
|
Started { file: File, position: u64 },
|
|
}
|
|
|
|
impl Default for State {
|
|
fn default() -> State {
|
|
State::Stopped
|
|
}
|
|
}
|
|
|
|
pub struct FileSink {
|
|
settings: Mutex<Settings>,
|
|
state: Mutex<State>,
|
|
}
|
|
|
|
use once_cell::sync::Lazy;
|
|
static CAT: Lazy<gst::DebugCategory> = Lazy::new(|| {
|
|
gst::DebugCategory::new(
|
|
"rsfilesink",
|
|
gst::DebugColorFlags::empty(),
|
|
Some("File Sink"),
|
|
)
|
|
});
|
|
|
|
impl FileSink {
|
|
fn set_location(
|
|
&self,
|
|
element: &super::FileSink,
|
|
location: Option<FileLocation>,
|
|
) -> Result<(), glib::Error> {
|
|
let state = self.state.lock().unwrap();
|
|
if let State::Started { .. } = *state {
|
|
return Err(glib::Error::new(
|
|
gst::URIError::BadState,
|
|
"Changing the `location` property on a started `filesink` is not supported",
|
|
));
|
|
}
|
|
|
|
let mut settings = self.settings.lock().unwrap();
|
|
settings.location = match location {
|
|
Some(location) => {
|
|
match settings.location {
|
|
Some(ref location_cur) => {
|
|
gst_info!(
|
|
CAT,
|
|
obj: element,
|
|
"Changing `location` from {:?} to {}",
|
|
location_cur,
|
|
location,
|
|
);
|
|
}
|
|
None => {
|
|
gst_info!(CAT, obj: element, "Setting `location` to {}", location,);
|
|
}
|
|
}
|
|
Some(location)
|
|
}
|
|
None => {
|
|
gst_info!(CAT, obj: element, "Resetting `location` to None",);
|
|
None
|
|
}
|
|
};
|
|
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
impl ObjectSubclass for FileSink {
|
|
const NAME: &'static str = "RsFileSink";
|
|
type Type = super::FileSink;
|
|
type ParentType = gst_base::BaseSink;
|
|
type Instance = gst::subclass::ElementInstanceStruct<Self>;
|
|
type Class = subclass::simple::ClassStruct<Self>;
|
|
|
|
glib::object_subclass!();
|
|
|
|
fn new() -> Self {
|
|
Self {
|
|
settings: Mutex::new(Default::default()),
|
|
state: Mutex::new(Default::default()),
|
|
}
|
|
}
|
|
|
|
fn type_init(type_: &mut subclass::InitializingType<Self>) {
|
|
type_.add_interface::<gst::URIHandler>();
|
|
}
|
|
|
|
fn class_init(klass: &mut Self::Class) {
|
|
klass.set_metadata(
|
|
"File Sink",
|
|
"Sink/File",
|
|
"Write stream to a file",
|
|
"François Laignel <fengalin@free.fr>, Luis de Bethencourt <luisbg@osg.samsung.com>",
|
|
);
|
|
|
|
let caps = gst::Caps::new_any();
|
|
let sink_pad_template = gst::PadTemplate::new(
|
|
"sink",
|
|
gst::PadDirection::Sink,
|
|
gst::PadPresence::Always,
|
|
&caps,
|
|
)
|
|
.unwrap();
|
|
klass.add_pad_template(sink_pad_template);
|
|
|
|
klass.install_properties(&PROPERTIES);
|
|
}
|
|
}
|
|
|
|
impl ObjectImpl for FileSink {
|
|
fn set_property(&self, obj: &Self::Type, id: usize, value: &glib::Value) {
|
|
let prop = &PROPERTIES[id];
|
|
match *prop {
|
|
subclass::Property("location", ..) => {
|
|
let res = match value.get::<String>() {
|
|
Ok(Some(location)) => FileLocation::try_from_path_str(location)
|
|
.and_then(|file_location| self.set_location(obj, Some(file_location))),
|
|
Ok(None) => self.set_location(obj, None),
|
|
Err(_) => unreachable!("type checked upstream"),
|
|
};
|
|
|
|
if let Err(err) = res {
|
|
gst_error!(CAT, obj: obj, "Failed to set property `location`: {}", err);
|
|
}
|
|
}
|
|
_ => unimplemented!(),
|
|
};
|
|
}
|
|
|
|
fn get_property(&self, _obj: &Self::Type, id: usize) -> glib::Value {
|
|
let prop = &PROPERTIES[id];
|
|
match *prop {
|
|
subclass::Property("location", ..) => {
|
|
let settings = self.settings.lock().unwrap();
|
|
let location = settings
|
|
.location
|
|
.as_ref()
|
|
.map(|location| location.to_string());
|
|
|
|
location.to_value()
|
|
}
|
|
_ => unimplemented!(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl ElementImpl for FileSink {}
|
|
|
|
impl BaseSinkImpl for FileSink {
|
|
fn start(&self, element: &Self::Type) -> Result<(), gst::ErrorMessage> {
|
|
let mut state = self.state.lock().unwrap();
|
|
if let State::Started { .. } = *state {
|
|
unreachable!("FileSink already started");
|
|
}
|
|
|
|
let settings = self.settings.lock().unwrap();
|
|
let location = settings.location.as_ref().ok_or_else(|| {
|
|
gst::error_msg!(
|
|
gst::ResourceError::Settings,
|
|
["File location is not defined"]
|
|
)
|
|
})?;
|
|
|
|
let file = File::create(location).map_err(|err| {
|
|
gst::error_msg!(
|
|
gst::ResourceError::OpenWrite,
|
|
[
|
|
"Could not open file {} for writing: {}",
|
|
location,
|
|
err.to_string(),
|
|
]
|
|
)
|
|
})?;
|
|
gst_debug!(CAT, obj: element, "Opened file {:?}", file);
|
|
|
|
*state = State::Started { file, position: 0 };
|
|
gst_info!(CAT, obj: element, "Started");
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn stop(&self, element: &Self::Type) -> Result<(), gst::ErrorMessage> {
|
|
let mut state = self.state.lock().unwrap();
|
|
if let State::Stopped = *state {
|
|
return Err(gst::error_msg!(
|
|
gst::ResourceError::Settings,
|
|
["FileSink not started"]
|
|
));
|
|
}
|
|
|
|
*state = State::Stopped;
|
|
gst_info!(CAT, obj: element, "Stopped");
|
|
|
|
Ok(())
|
|
}
|
|
|
|
// TODO: implement seek in BYTES format
|
|
|
|
fn render(
|
|
&self,
|
|
element: &Self::Type,
|
|
buffer: &gst::Buffer,
|
|
) -> Result<gst::FlowSuccess, gst::FlowError> {
|
|
let mut state = self.state.lock().unwrap();
|
|
let (file, position) = match *state {
|
|
State::Started {
|
|
ref mut file,
|
|
ref mut position,
|
|
} => (file, position),
|
|
State::Stopped => {
|
|
gst::element_error!(element, gst::CoreError::Failed, ["Not started yet"]);
|
|
return Err(gst::FlowError::Error);
|
|
}
|
|
};
|
|
|
|
gst_trace!(CAT, obj: element, "Rendering {:?}", buffer);
|
|
let map = buffer.map_readable().map_err(|_| {
|
|
gst::element_error!(element, gst::CoreError::Failed, ["Failed to map buffer"]);
|
|
gst::FlowError::Error
|
|
})?;
|
|
|
|
file.write_all(map.as_ref()).map_err(|err| {
|
|
gst::element_error!(
|
|
element,
|
|
gst::ResourceError::Write,
|
|
["Failed to write buffer: {}", err]
|
|
);
|
|
gst::FlowError::Error
|
|
})?;
|
|
|
|
*position += map.len() as u64;
|
|
|
|
Ok(gst::FlowSuccess::Ok)
|
|
}
|
|
}
|
|
|
|
impl URIHandlerImpl for FileSink {
|
|
fn get_uri(&self, _element: &Self::Type) -> Option<String> {
|
|
let settings = self.settings.lock().unwrap();
|
|
|
|
// Conversion to Url already checked while building the `FileLocation`
|
|
settings.location.as_ref().map(|location| {
|
|
Url::from_file_path(location)
|
|
.expect("FileSink::get_uri couldn't build `Url` from `location`")
|
|
.into_string()
|
|
})
|
|
}
|
|
|
|
fn set_uri(&self, element: &Self::Type, uri: &str) -> Result<(), glib::Error> {
|
|
// Special case for "file://" as this is used by some applications to test
|
|
// with `gst_element_make_from_uri` if there's an element that supports the URI protocol
|
|
|
|
if uri != "file://" {
|
|
let file_location = FileLocation::try_from_uri_str(uri)?;
|
|
self.set_location(&element, Some(file_location))
|
|
} else {
|
|
Ok(())
|
|
}
|
|
}
|
|
|
|
fn get_uri_type() -> gst::URIType {
|
|
gst::URIType::Sink
|
|
}
|
|
|
|
fn get_protocols() -> Vec<String> {
|
|
vec!["file".to_string()]
|
|
}
|
|
}
|