mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-09-27 06:20:03 +00:00
163 lines
4.9 KiB
Rust
163 lines
4.9 KiB
Rust
// Copyright (C) 2016 Sebastian Dröge <sebastian@centricular.com>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the
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// Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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// Boston, MA 02110-1301, USA.
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use std::u64;
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use std::io::{Read, Seek, SeekFrom};
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use std::fs::File;
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use std::path::PathBuf;
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use url::Url;
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use std::io::Write;
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use utils::*;
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use rssource::*;
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#[derive(Debug)]
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pub struct FileSrc {
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location: Option<PathBuf>,
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file: Option<File>,
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position: u64,
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}
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unsafe impl Sync for FileSrc {}
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unsafe impl Send for FileSrc {}
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impl FileSrc {
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fn new() -> FileSrc {
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FileSrc { location: None, file: None, position: 0 }
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}
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fn new_source() -> Box<Source> {
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Box::new(FileSrc::new())
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}
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pub extern "C" fn new_ptr() -> *mut Box<Source> {
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let instance = Box::new(FileSrc::new_source());
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return Box::into_raw(instance);
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}
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}
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impl Source for FileSrc {
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fn set_uri(&mut self, uri_str: &Option<String>) -> bool {
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match *uri_str {
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None => {
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self.location = None;
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return true;
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},
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Some(ref uri_str) => {
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let uri_parsed = Url::parse(uri_str.as_str());
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match uri_parsed {
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Ok(u) => {
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match u.to_file_path().ok() {
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Some(p) => {
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self.location = Some(p);
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return true;
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},
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None => {
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self.location = None;
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println_err!("Unsupported file URI '{}'", uri_str);
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return false;
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}
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}
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},
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Err(err) => {
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self.location = None;
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println_err!("Failed to parse URI '{}': {}", uri_str, err);
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return false;
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}
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}
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}
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}
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}
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fn get_uri(&self) -> Option<String> {
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self.location.as_ref()
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.map(|l| Url::from_file_path(l).ok())
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.and_then(|i| i) // join()
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.map(|u| u.into_string())
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}
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fn is_seekable(&self) -> bool {
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true
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}
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fn get_size(&self) -> u64 {
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self.file.as_ref()
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.map(|f| f.metadata().ok())
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.and_then(|i| i) // join()
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.map(|m| m.len())
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.unwrap_or(u64::MAX)
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}
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fn start(&mut self) -> bool {
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self.file = None;
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self.position = 0;
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match self.location {
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None => return false,
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Some(ref location) => {
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match File::open(location.as_path()) {
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Ok(file) => {
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self.file = Some(file);
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return true;
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},
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Err(err) => {
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println_err!("Failed to open file '{}': {}", location.to_str().unwrap_or("Non-UTF8 path"), err.to_string());
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return false;
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},
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}
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},
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}
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}
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fn stop(&mut self) -> bool {
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self.file = None;
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self.position = 0;
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true
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}
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fn fill(&mut self, offset: u64, data: &mut [u8]) -> Result<usize, GstFlowReturn> {
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match self.file {
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None => return Err(GstFlowReturn::Error),
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Some(ref mut f) => {
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if self.position != offset {
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match f.seek(SeekFrom::Start(offset)) {
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Ok(_) => {
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self.position = offset;
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},
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Err(err) => {
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println_err!("Failed to seek to {}: {}", offset, err.to_string());
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return Err(GstFlowReturn::Error);
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}
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}
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}
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match f.read(data) {
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Ok(size) => {
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self.position += size as u64;
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return Ok(size)
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},
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Err(err) => {
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println_err!("Failed to read at {}: {}", offset, err.to_string());
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return Err(GstFlowReturn::Error);
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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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