forked from mirrors/gstreamer-rs
145 lines
3.4 KiB
Rust
145 lines
3.4 KiB
Rust
// Copyright (C) 2017 Sebastian Dröge <sebastian@centricular.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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use ffi;
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use glib;
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use glib::StaticType;
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use glib::translate::{from_glib, from_glib_full, from_glib_none};
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use miniobject::*;
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use Buffer;
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use BufferRef;
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pub type BufferList = GstRc<BufferListRef>;
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pub struct BufferListRef(ffi::GstBufferList);
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unsafe impl MiniObject for BufferListRef {
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type GstType = ffi::GstBufferList;
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}
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impl GstRc<BufferListRef> {
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pub fn new() -> Self {
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assert_initialized_main_thread!();
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unsafe { from_glib_full(ffi::gst_buffer_list_new()) }
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}
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pub fn new_sized(size: usize) -> Self {
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assert_initialized_main_thread!();
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unsafe { from_glib_full(ffi::gst_buffer_list_new_sized(size as u32)) }
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}
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}
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impl BufferListRef {
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pub fn insert(&mut self, idx: i32, buffer: Buffer) {
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unsafe {
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ffi::gst_buffer_list_insert(self.as_mut_ptr(), idx, buffer.into_ptr());
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}
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}
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pub fn add(&mut self, buffer: Buffer) {
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self.insert(-1, buffer);
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}
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pub fn copy_deep(&self) -> BufferList {
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unsafe { from_glib_full(ffi::gst_buffer_list_copy_deep(self.as_ptr())) }
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}
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pub fn remove(&mut self, idx: u32, len: u32) {
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unsafe { ffi::gst_buffer_list_remove(self.as_mut_ptr(), idx, len) }
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}
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pub fn get(&self, idx: u32) -> Option<&BufferRef> {
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unsafe {
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let ptr = ffi::gst_buffer_list_get(self.as_mut_ptr(), idx);
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if ptr.is_null() {
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None
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} else {
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Some(BufferRef::from_ptr(ptr))
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}
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}
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}
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pub fn len(&self) -> usize {
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unsafe { ffi::gst_buffer_list_length(self.as_mut_ptr()) as usize }
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}
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pub fn iter<'a>(&'a self) -> Iter<'a> {
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Iter::new(self)
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}
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}
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impl ToOwned for BufferListRef {
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type Owned = GstRc<BufferListRef>;
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fn to_owned(&self) -> GstRc<BufferListRef> {
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unsafe { from_glib_none(self.as_ptr()) }
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}
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}
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impl StaticType for BufferListRef {
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fn static_type() -> glib::Type {
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unsafe { from_glib(ffi::gst_buffer_list_get_type()) }
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}
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}
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unsafe impl Sync for BufferListRef {}
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unsafe impl Send for BufferListRef {}
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pub struct Iter<'a> {
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list: &'a BufferListRef,
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idx: u32,
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size: u32,
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}
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impl<'a> Iter<'a> {
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fn new(list: &'a BufferListRef) -> Iter<'a> {
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Iter {
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list: list,
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idx: 0,
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size: list.len() as u32,
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}
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}
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}
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impl<'a> Iterator for Iter<'a> {
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type Item = &'a BufferRef;
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fn next(&mut self) -> Option<Self::Item> {
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if self.idx >= self.size {
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return None;
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}
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let item = self.list.get(self.idx);
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self.idx += 1;
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item
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}
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fn size_hint(&self) -> (usize, Option<usize>) {
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if self.idx == self.size {
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return (0, Some(0));
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}
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let remaining = (self.size - self.idx) as usize;
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(remaining, Some(remaining))
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}
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}
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impl<'a> DoubleEndedIterator for Iter<'a> {
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fn next_back(&mut self) -> Option<Self::Item> {
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if self.idx == self.size {
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return None;
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}
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self.size -= 1;
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self.list.get(self.size)
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}
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}
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impl<'a> ExactSizeIterator for Iter<'a> {}
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