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use ffi;
use glib;
use glib::translate::{from_glib, from_glib_full};
use glib::StaticType;
use std::fmt;
use miniobject::*;
use Buffer;
use BufferRef;
pub type BufferList = GstRc<BufferListRef>;
pub struct BufferListRef(ffi::GstBufferList);
unsafe impl MiniObject for BufferListRef {
type GstType = ffi::GstBufferList;
}
impl GstRc<BufferListRef> {
pub fn new() -> Self {
assert_initialized_main_thread!();
unsafe { from_glib_full(ffi::gst_buffer_list_new()) }
}
pub fn new_sized(size: usize) -> Self {
assert_initialized_main_thread!();
unsafe { from_glib_full(ffi::gst_buffer_list_new_sized(size as u32)) }
}
}
impl BufferListRef {
pub fn insert(&mut self, idx: i32, buffer: Buffer) {
unsafe {
ffi::gst_buffer_list_insert(self.as_mut_ptr(), idx, buffer.into_ptr());
}
}
pub fn add(&mut self, buffer: Buffer) {
self.insert(-1, buffer);
}
pub fn copy_deep(&self) -> BufferList {
unsafe { from_glib_full(ffi::gst_buffer_list_copy_deep(self.as_ptr())) }
}
pub fn remove(&mut self, idx: u32, len: u32) {
unsafe { ffi::gst_buffer_list_remove(self.as_mut_ptr(), idx, len) }
}
pub fn get(&self, idx: u32) -> Option<&BufferRef> {
unsafe {
let ptr = ffi::gst_buffer_list_get(self.as_mut_ptr(), idx);
if ptr.is_null() {
None
} else {
Some(BufferRef::from_ptr(ptr))
}
}
}
#[cfg(any(feature = "v1_14", feature = "dox"))]
pub fn get_writable(&mut self, idx: u32) -> Option<&mut BufferRef> {
unsafe {
let ptr = ffi::gst_buffer_list_get_writable(self.as_mut_ptr(), idx);
if ptr.is_null() {
None
} else {
Some(BufferRef::from_mut_ptr(ptr))
}
}
}
pub fn len(&self) -> usize {
unsafe { ffi::gst_buffer_list_length(self.as_mut_ptr()) as usize }
}
#[cfg(any(feature = "v1_14", feature = "dox"))]
pub fn calculate_size(&self) -> usize {
unsafe { ffi::gst_buffer_list_calculate_size(self.as_mut_ptr()) as usize }
}
pub fn is_empty(&self) -> bool {
self.len() == 0
}
pub fn iter(&self) -> Iter {
Iter::new(self)
}
}
impl Default for GstRc<BufferListRef> {
fn default() -> Self {
Self::new()
}
}
impl ToOwned for BufferListRef {
type Owned = GstRc<BufferListRef>;
fn to_owned(&self) -> GstRc<BufferListRef> {
#[cfg_attr(feature = "cargo-clippy", allow(cast_ptr_alignment))]
unsafe {
from_glib_full(ffi::gst_mini_object_copy(self.as_ptr() as *const _) as *mut _)
}
}
}
impl fmt::Debug for BufferListRef {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let size = self.iter().map(|b| b.get_size()).sum::<usize>();
let (pts, dts) = self
.get(0)
.map(|b| (b.get_pts(), b.get_dts()))
.unwrap_or((::ClockTime::none(), ::ClockTime::none()));
f.debug_struct("BufferList")
.field("ptr", unsafe { &self.as_ptr() })
.field("buffers", &self.len())
.field("pts", &pts.to_string())
.field("dts", &dts.to_string())
.field("size", &size)
.finish()
}
}
impl StaticType for BufferListRef {
fn static_type() -> glib::Type {
unsafe { from_glib(ffi::gst_buffer_list_get_type()) }
}
}
unsafe impl Sync for BufferListRef {}
unsafe impl Send for BufferListRef {}
pub struct Iter<'a> {
list: &'a BufferListRef,
idx: u32,
size: u32,
}
impl<'a> Iter<'a> {
fn new(list: &'a BufferListRef) -> Iter<'a> {
skip_assert_initialized!();
Iter {
list,
idx: 0,
size: list.len() as u32,
}
}
}
impl<'a> Iterator for Iter<'a> {
type Item = &'a BufferRef;
fn next(&mut self) -> Option<Self::Item> {
if self.idx >= self.size {
return None;
}
let item = self.list.get(self.idx);
self.idx += 1;
item
}
fn size_hint(&self) -> (usize, Option<usize>) {
if self.idx == self.size {
return (0, Some(0));
}
let remaining = (self.size - self.idx) as usize;
(remaining, Some(remaining))
}
}
impl<'a> DoubleEndedIterator for Iter<'a> {
fn next_back(&mut self) -> Option<Self::Item> {
if self.idx == self.size {
return None;
}
self.size -= 1;
self.list.get(self.size)
}
}
impl<'a> ExactSizeIterator for Iter<'a> {}