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Switch to gstreamer-sys crate and port buffer bindings to it

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This commit is contained in:
Sebastian Dröge 2017-04-06 15:07:22 +03:00
parent 98d2175ef5
commit e4ababa98f
5 changed files with 143 additions and 367 deletions
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4
gst-plugin/Cargo.toml
View file

@ -14,6 +14,10 @@ slog = { version = "1.3", features = ["max_level_trace"] }
lazy_static = "0.2"
byteorder = "1.0"
num-rational = { version = "0.1", default-features = false, features = [] }
glib-sys = "0.3"
gobject-sys = "0.3"
gstreamer-sys = { git = "https://github.com/sdroege/gstreamer-sys.git" }
derivative = "1.0"
[build-dependencies]
gcc = "0.3"

2
gst-plugin/build.rs
View file

@ -14,7 +14,7 @@ fn main() {
let gstbase = pkg_config::probe_library("gstreamer-base-1.0").unwrap();
let includes = [gstreamer.include_paths, gstbase.include_paths];
let files = ["src/error.c", "src/buffer.c", "src/log.c", "src/source.c", "src/sink.c", "src/demuxer.c"];
let files = ["src/error.c", "src/log.c", "src/source.c", "src/sink.c", "src/demuxer.c"];
let mut config = gcc::Config::new();
config.include("src");

82
gst-plugin/src/buffer.c
View file

@ -1,82 +0,0 @@
/* Copyright (C) 2016-2017 Sebastian Dröge <sebastian@centricular.com>
*
* 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.
*/
#include <gst/gst.h>
guint64
gst_rs_buffer_get_pts (GstBuffer * buffer)
{
return GST_BUFFER_PTS (buffer);
}
void
gst_rs_buffer_set_pts (GstBuffer * buffer, guint64 pts)
{
GST_BUFFER_PTS (buffer) = pts;
}
guint64
gst_rs_buffer_get_dts (GstBuffer * buffer)
{
return GST_BUFFER_DTS (buffer);
}
void
gst_rs_buffer_set_dts (GstBuffer * buffer, guint64 dts)
{
GST_BUFFER_DTS (buffer) = dts;
}
guint64
gst_rs_buffer_get_duration (GstBuffer * buffer)
{
return GST_BUFFER_DURATION (buffer);
}
void
gst_rs_buffer_set_duration (GstBuffer * buffer, guint64 dts)
{
GST_BUFFER_DURATION (buffer) = dts;
}
guint64
gst_rs_buffer_get_offset (GstBuffer * buffer)
{
return GST_BUFFER_OFFSET (buffer);
}
void
gst_rs_buffer_set_offset (GstBuffer * buffer, guint64 offset)
{
GST_BUFFER_OFFSET (buffer) = offset;
}
guint64
gst_rs_buffer_get_offset_end (GstBuffer * buffer)
{
return GST_BUFFER_OFFSET_END (buffer);
}
void
gst_rs_buffer_set_offset_end (GstBuffer * buffer, guint64 offset_end)
{
GST_BUFFER_OFFSET_END (buffer) = offset_end;
}
GstBufferFlags
gst_rs_buffer_get_flags (GstBuffer * buffer)
{
return GST_MINI_OBJECT_FLAGS (buffer);
}
void
gst_rs_buffer_set_flags (GstBuffer * buffer, GstBufferFlags flags)
{
GST_MINI_OBJECT_FLAGS (buffer) = flags;
}

417
gst-plugin/src/buffer.rs
View file

@ -13,239 +13,191 @@ use std::slice;
use std::u64;
use std::usize;
use utils::*;
use miniobject::*;
#[derive(Debug)]
pub struct Buffer(*mut c_void);
#[repr(C)]
#[derive(Debug)]
struct GstMapInfo {
memory: *mut c_void,
flags: i32,
data: *mut c_void,
size: usize,
maxsize: usize,
user_data: [*mut c_void; 4],
_gst_reserved: [*const c_void; 4],
}
use glib;
use gst;
#[derive(Debug)]
pub struct Buffer(*mut gst::GstBuffer);
#[derive(Derivative)]
#[derivative(Debug)]
pub struct ReadBufferMap<'a> {
buffer: &'a Buffer,
map_info: GstMapInfo,
#[derivative(Debug="ignore")]
map_info: gst::GstMapInfo,
}
#[derive(Debug)]
#[derive(Derivative)]
#[derivative(Debug)]
pub struct ReadWriteBufferMap<'a> {
buffer: &'a Buffer,
map_info: GstMapInfo,
#[derivative(Debug="ignore")]
map_info: gst::GstMapInfo,
}
#[derive(Debug)]
#[derive(Derivative)]
#[derivative(Debug)]
pub struct ReadMappedBuffer {
buffer: GstRc<Buffer>,
map_info: GstMapInfo,
#[derivative(Debug="ignore")]
map_info: gst::GstMapInfo,
}
#[derive(Debug)]
#[derive(Derivative)]
#[derivative(Debug)]
pub struct ReadWriteMappedBuffer {
buffer: GstRc<Buffer>,
map_info: GstMapInfo,
#[derivative(Debug="ignore")]
map_info: gst::GstMapInfo,
}
unsafe impl MiniObject for Buffer {
unsafe fn as_ptr(&self) -> *mut c_void {
self.0
self.0 as *mut c_void
}
unsafe fn replace_ptr(&mut self, ptr: *mut c_void) {
self.0 = ptr
self.0 = ptr as *mut gst::GstBuffer
}
unsafe fn new_from_ptr(ptr: *mut c_void) -> Self {
Buffer(ptr)
Buffer(ptr as *mut gst::GstBuffer)
}
}
impl Buffer {
pub fn new() -> GstRc<Buffer> {
extern "C" {
fn gst_buffer_new() -> *mut c_void;
}
unsafe { GstRc::new_from_owned_ptr(gst_buffer_new()) }
unsafe { GstRc::new_from_owned_ptr(gst::gst_buffer_new() as *mut c_void) }
}
pub fn new_with_size(size: usize) -> Option<GstRc<Buffer>> {
extern "C" {
fn gst_buffer_new_allocate(allocator: *const c_void,
size: usize,
params: *const c_void)
-> *mut c_void;
}
let raw = unsafe { gst_buffer_new_allocate(ptr::null(), size, ptr::null()) };
let raw = unsafe { gst::gst_buffer_new_allocate(ptr::null_mut(), size, ptr::null_mut()) };
if raw.is_null() {
None
} else {
Some(unsafe { GstRc::new_from_owned_ptr(raw) })
Some(unsafe { GstRc::new_from_owned_ptr(raw as *mut c_void) })
}
}
extern "C" fn vec_drop(vec: *mut c_void) {
let vec: Box<Vec<u8>> = unsafe { Box::from_raw(vec as *mut Vec<u8>) };
unsafe extern "C" fn vec_drop(vec: glib::gpointer) {
let vec: Box<Vec<u8>> = Box::from_raw(vec as *mut Vec<u8>);
drop(vec);
}
pub fn new_from_vec(vec: Vec<u8>) -> Option<GstRc<Buffer>> {
extern "C" {
fn gst_buffer_new_wrapped_full(flags: u32,
data: *mut u8,
maxsize: usize,
offset: usize,
size: usize,
user_data: *mut c_void,
destroy_notify: extern "C" fn(*mut c_void))
-> *mut c_void;
}
let raw = unsafe {
let mut vec = Box::new(vec);
let maxsize = vec.capacity();
let size = vec.len();
let data = vec.as_mut_ptr();
let user_data = Box::into_raw(vec);
gst_buffer_new_wrapped_full(0,
data,
maxsize,
0,
size,
user_data as *mut c_void,
Buffer::vec_drop)
gst::gst_buffer_new_wrapped_full(gst::GstMemoryFlags::empty(),
data as glib::gpointer,
maxsize,
0,
size,
user_data as glib::gpointer,
Some(Buffer::vec_drop))
};
if raw.is_null() {
None
} else {
Some(unsafe { GstRc::new_from_owned_ptr(raw) })
Some(unsafe { GstRc::new_from_owned_ptr(raw as *mut c_void) })
}
}
pub fn map_read(&self) -> Option<ReadBufferMap> {
extern "C" {
fn gst_buffer_map(buffer: *mut c_void,
map: *mut GstMapInfo,
flags: MapFlags)
-> GBoolean;
}
let mut map_info: GstMapInfo = unsafe { mem::zeroed() };
let res =
unsafe { gst_buffer_map(self.0, &mut map_info as *mut GstMapInfo, MAP_FLAG_READ) };
if res.to_bool() {
let mut map_info: gst::GstMapInfo = unsafe { mem::zeroed() };
let res = unsafe {
gst::gst_buffer_map(self.0,
&mut map_info as *mut gst::GstMapInfo,
gst::GST_MAP_READ)
};
if res == glib::GTRUE {
Some(ReadBufferMap {
buffer: self,
map_info: map_info,
})
buffer: self,
map_info: map_info,
})
} else {
None
}
}
pub fn map_readwrite(&mut self) -> Option<ReadWriteBufferMap> {
extern "C" {
fn gst_buffer_map(buffer: *mut c_void,
map: *mut GstMapInfo,
flags: MapFlags)
-> GBoolean;
}
let mut map_info: GstMapInfo = unsafe { mem::zeroed() };
let res =
unsafe { gst_buffer_map(self.0, &mut map_info as *mut GstMapInfo, MAP_FLAG_READWRITE) };
if res.to_bool() {
let mut map_info: gst::GstMapInfo = unsafe { mem::zeroed() };
let res = unsafe {
gst::gst_buffer_map(self.0,
&mut map_info as *mut gst::GstMapInfo,
gst::GST_MAP_READWRITE)
};
if res == glib::GTRUE {
Some(ReadWriteBufferMap {
buffer: self,
map_info: map_info,
})
buffer: self,
map_info: map_info,
})
} else {
None
}
}
pub fn into_read_mapped_buffer(buffer: GstRc<Buffer>) -> Option<ReadMappedBuffer> {
extern "C" {
fn gst_buffer_map(buffer: *mut c_void,
map: *mut GstMapInfo,
flags: MapFlags)
-> GBoolean;
}
let mut map_info: GstMapInfo = unsafe { mem::zeroed() };
let res =
unsafe { gst_buffer_map(buffer.0, &mut map_info as *mut GstMapInfo, MAP_FLAG_READ) };
if res.to_bool() {
let mut map_info: gst::GstMapInfo = unsafe { mem::zeroed() };
let res = unsafe {
gst::gst_buffer_map(buffer.0,
&mut map_info as *mut gst::GstMapInfo,
gst::GST_MAP_READ)
};
if res == glib::GTRUE {
Some(ReadMappedBuffer {
buffer: buffer,
map_info: map_info,
})
buffer: buffer,
map_info: map_info,
})
} else {
None
}
}
pub fn into_readwrite_mapped_buffer(buffer: GstRc<Buffer>) -> Option<ReadWriteMappedBuffer> {
extern "C" {
fn gst_buffer_map(buffer: *mut c_void,
map: *mut GstMapInfo,
flags: MapFlags)
-> GBoolean;
}
let mut map_info: GstMapInfo = unsafe { mem::zeroed() };
let mut map_info: gst::GstMapInfo = unsafe { mem::zeroed() };
let res = unsafe {
gst_buffer_map(buffer.0,
&mut map_info as *mut GstMapInfo,
MAP_FLAG_READWRITE)
gst::gst_buffer_map(buffer.0,
&mut map_info as *mut gst::GstMapInfo,
gst::GST_MAP_READWRITE)
};
if res.to_bool() {
if res == glib::GTRUE {
Some(ReadWriteMappedBuffer {
buffer: buffer,
map_info: map_info,
})
buffer: buffer,
map_info: map_info,
})
} else {
None
}
}
pub fn append(buffer: GstRc<Buffer>, other: GstRc<Buffer>) -> GstRc<Buffer> {
extern "C" {
fn gst_buffer_append(buf1: *mut c_void, buf2: *mut c_void) -> *mut c_void;
unsafe {
GstRc::new_from_owned_ptr(gst::gst_buffer_append(buffer.into_ptr() as
*mut gst::GstBuffer,
other.into_ptr() as
*mut gst::GstBuffer) as
*mut c_void)
}
unsafe { GstRc::new_from_owned_ptr(gst_buffer_append(buffer.into_ptr(), other.into_ptr())) }
}
pub fn copy_region(&self, offset: usize, size: Option<usize>) -> Option<GstRc<Buffer>> {
extern "C" {
fn gst_buffer_copy_region(buf: *mut c_void,
flags: BufferCopyFlags,
offset: usize,
size: usize)
-> *mut c_void;
}
let size_real = size.unwrap_or(usize::MAX);
let raw =
unsafe { gst_buffer_copy_region(self.0, BUFFER_COPY_FLAG_ALL, offset, size_real) };
let raw = unsafe {
gst::gst_buffer_copy_region(self.0, gst::GST_BUFFER_COPY_ALL, offset, size_real)
};
if raw.is_null() {
None
} else {
Some(unsafe { GstRc::new_from_owned_ptr(raw) })
Some(unsafe { GstRc::new_from_owned_ptr(raw as *mut c_void) })
}
}
@ -255,17 +207,9 @@ impl Buffer {
assert!(maxsize >= offset && maxsize - offset >= size);
extern "C" {
fn gst_buffer_fill(buffer: *mut c_void,
offset: usize,
src: *const u8,
size: usize)
-> usize;
};
let copied = unsafe {
let src = slice.as_ptr();
gst_buffer_fill(self.0, offset, src, size)
gst::gst_buffer_fill(self.0, offset, src as glib::gconstpointer, size)
};
if copied == size { Ok(()) } else { Err(copied) }
@ -277,67 +221,42 @@ impl Buffer {
assert!(maxsize >= offset && maxsize - offset >= size);
extern "C" {
fn gst_buffer_extract(buffer: *mut c_void,
offset: usize,
src: *mut u8,
size: usize)
-> usize;
};
let copied = unsafe {
let src = slice.as_mut_ptr();
gst_buffer_extract(self.0, offset, src, size)
let dest = slice.as_mut_ptr();
gst::gst_buffer_extract(self.0, offset, dest as glib::gpointer, size)
};
if copied == size { Ok(()) } else { Err(copied) }
}
pub fn get_size(&self) -> usize {
extern "C" {
fn gst_buffer_get_size(obj: *const c_void) -> usize;
}
unsafe { gst_buffer_get_size(self.0) }
unsafe { gst::gst_buffer_get_size(self.0) }
}
pub fn get_maxsize(&self) -> usize {
extern "C" {
fn gst_buffer_get_sizes_range(obj: *const c_void,
idx: u32,
length: i32,
offset: *mut usize,
maxsize: *mut usize)
-> usize;
}
let mut maxsize: usize = 0;
unsafe {
gst_buffer_get_sizes_range(self.0, 0, -1, ptr::null_mut(), &mut maxsize as *mut usize);
gst::gst_buffer_get_sizes_range(self.0,
0,
-1,
ptr::null_mut(),
&mut maxsize as *mut usize);
};
maxsize
}
pub fn set_size(&mut self, size: usize) {
extern "C" {
fn gst_buffer_set_size(obj: *const c_void, size: usize);
}
assert!(self.get_maxsize() >= size);
unsafe {
gst_buffer_set_size(self.0, size);
gst::gst_buffer_set_size(self.0, size as isize);
}
}
pub fn get_offset(&self) -> Option<u64> {
extern "C" {
fn gst_rs_buffer_get_offset(buf: *const c_void) -> u64;
}
let offset = unsafe { gst_rs_buffer_get_offset(self.0) };
let offset = unsafe { (*self.0).offset };
if offset == u64::MAX {
None
@ -347,23 +266,15 @@ impl Buffer {
}
pub fn set_offset(&mut self, offset: Option<u64>) {
extern "C" {
fn gst_rs_buffer_set_offset(buf: *const c_void, offset: u64);
}
let offset = offset.unwrap_or(u64::MAX);
unsafe {
gst_rs_buffer_set_offset(self.0, offset);
(*self.0).offset = offset;
}
}
pub fn get_offset_end(&self) -> Option<u64> {
extern "C" {
fn gst_rs_buffer_get_offset_end(buf: *const c_void) -> u64;
}
let offset_end = unsafe { gst_rs_buffer_get_offset_end(self.0) };
let offset_end = unsafe { (*self.0).offset_end };
if offset_end == u64::MAX {
None
@ -373,67 +284,43 @@ impl Buffer {
}
pub fn set_offset_end(&mut self, offset_end: Option<u64>) {
extern "C" {
fn gst_rs_buffer_set_offset_end(buf: *const c_void, offset_end: u64);
}
let offset_end = offset_end.unwrap_or(u64::MAX);
unsafe {
gst_rs_buffer_set_offset_end(self.0, offset_end);
(*self.0).offset_end = offset_end;
}
}
pub fn get_pts(&self) -> Option<u64> {
extern "C" {
fn gst_rs_buffer_get_pts(buf: *const c_void) -> u64;
}
let pts = unsafe { gst_rs_buffer_get_pts(self.0) };
let pts = unsafe { (*self.0).pts };
if pts == u64::MAX { None } else { Some(pts) }
}
pub fn set_pts(&mut self, pts: Option<u64>) {
extern "C" {
fn gst_rs_buffer_set_pts(buf: *const c_void, pts: u64);
}
let pts = pts.unwrap_or(u64::MAX);
unsafe {
gst_rs_buffer_set_pts(self.0, pts);
(*self.0).pts = pts;
}
}
pub fn get_dts(&self) -> Option<u64> {
extern "C" {
fn gst_rs_buffer_get_dts(buf: *const c_void) -> u64;
}
let dts = unsafe { gst_rs_buffer_get_dts(self.0) };
let dts = unsafe { (*self.0).dts };
if dts == u64::MAX { None } else { Some(dts) }
}
pub fn set_dts(&mut self, dts: Option<u64>) {
extern "C" {
fn gst_rs_buffer_set_dts(buf: *const c_void, dts: u64);
}
let dts = dts.unwrap_or(u64::MAX);
unsafe {
gst_rs_buffer_set_dts(self.0, dts);
(*self.0).dts = dts;
}
}
pub fn get_duration(&self) -> Option<u64> {
extern "C" {
fn gst_rs_buffer_get_duration(buf: *const c_void) -> u64;
}
let duration = unsafe { gst_rs_buffer_get_duration(self.0) };
let duration = unsafe { (*self.0).duration };
if duration == u64::MAX {
None
@ -443,32 +330,20 @@ impl Buffer {
}
pub fn set_duration(&mut self, duration: Option<u64>) {
extern "C" {
fn gst_rs_buffer_set_duration(buf: *const c_void, duration: u64);
}
let duration = duration.unwrap_or(u64::MAX);
unsafe {
gst_rs_buffer_set_duration(self.0, duration);
(*self.0).duration = duration;
}
}
pub fn get_flags(&self) -> BufferFlags {
extern "C" {
fn gst_rs_buffer_get_flags(buf: *const c_void) -> BufferFlags;
}
unsafe { gst_rs_buffer_get_flags(self.0) }
BufferFlags::from_bits_truncate(unsafe { (*self.0).mini_object.flags })
}
pub fn set_flags(&mut self, flags: BufferFlags) {
extern "C" {
fn gst_rs_buffer_set_flags(buf: *const c_void, flags: BufferFlags);
}
unsafe {
gst_rs_buffer_set_flags(self.0, flags);
(*self.0).mini_object.flags = flags.bits();
}
}
}
@ -510,12 +385,8 @@ impl<'a> ReadBufferMap<'a> {
impl<'a> Drop for ReadBufferMap<'a> {
fn drop(&mut self) {
extern "C" {
fn gst_buffer_unmap(buffer: *mut c_void, map: *mut GstMapInfo);
};
unsafe {
gst_buffer_unmap(self.buffer.0, &mut self.map_info as *mut GstMapInfo);
gst::gst_buffer_unmap(self.buffer.0, &mut self.map_info as *mut gst::GstMapInfo);
}
}
}
@ -540,12 +411,8 @@ impl<'a> ReadWriteBufferMap<'a> {
impl<'a> Drop for ReadWriteBufferMap<'a> {
fn drop(&mut self) {
extern "C" {
fn gst_buffer_unmap(buffer: *mut c_void, map: *mut GstMapInfo);
};
unsafe {
gst_buffer_unmap(self.buffer.0, &mut self.map_info as *mut GstMapInfo);
gst::gst_buffer_unmap(self.buffer.0, &mut self.map_info as *mut gst::GstMapInfo);
}
}
}
@ -566,13 +433,9 @@ impl ReadMappedBuffer {
impl Drop for ReadMappedBuffer {
fn drop(&mut self) {
extern "C" {
fn gst_buffer_unmap(buffer: *mut c_void, map: *mut GstMapInfo);
};
if !self.buffer.0.is_null() {
unsafe {
gst_buffer_unmap(self.buffer.0, &mut self.map_info as *mut GstMapInfo);
gst::gst_buffer_unmap(self.buffer.0, &mut self.map_info as *mut gst::GstMapInfo);
}
}
}
@ -601,13 +464,9 @@ impl ReadWriteMappedBuffer {
impl Drop for ReadWriteMappedBuffer {
fn drop(&mut self) {
extern "C" {
fn gst_buffer_unmap(buffer: *mut c_void, map: *mut GstMapInfo);
};
if !self.buffer.0.is_null() {
unsafe {
gst_buffer_unmap(self.buffer.0, &mut self.map_info as *mut GstMapInfo);
gst::gst_buffer_unmap(self.buffer.0, &mut self.map_info as *mut gst::GstMapInfo);
}
}
}
@ -616,16 +475,7 @@ impl Drop for ReadWriteMappedBuffer {
unsafe impl Sync for ReadWriteMappedBuffer {}
unsafe impl Send for ReadWriteMappedBuffer {}
bitflags! {
#[repr(C)]
flags MapFlags: u32 {
const MAP_FLAG_READ = 0b00000001,
const MAP_FLAG_WRITE = 0b00000010,
const MAP_FLAG_READWRITE = MAP_FLAG_READ.bits
| MAP_FLAG_WRITE.bits,
}
}
// FIXME: Duplicate of gst::GstBufferFlags with nicer naming
bitflags! {
#[repr(C)]
pub flags BufferFlags: u32 {
@ -644,39 +494,38 @@ bitflags! {
}
}
bitflags! {
#[repr(C)]
flags BufferCopyFlags: u32 {
const BUFFER_COPY_FLAG_FLAGS = 0b00000001,
const BUFFER_COPY_FLAG_TIMESTAMPS = 0b00000010,
const BUFFER_COPY_FLAG_META = 0b00000100,
const BUFFER_COPY_FLAG_MEMORY = 0b00001000,
const BUFFER_COPY_FLAG_MERGE = 0b00010000,
const BUFFER_COPY_FLAG_DEEP = 0b00100000,
const BUFFER_COPY_FLAG_METADATA = BUFFER_COPY_FLAG_FLAGS.bits
| BUFFER_COPY_FLAG_TIMESTAMPS.bits
| BUFFER_COPY_FLAG_META.bits,
const BUFFER_COPY_FLAG_ALL = BUFFER_COPY_FLAG_METADATA.bits
| BUFFER_COPY_FLAG_MEMORY.bits,
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::ptr;
use std::os::raw::c_void;
fn init() {
extern "C" {
fn gst_init(argc: *mut c_void, argv: *mut c_void);
}
unsafe {
gst_init(ptr::null_mut(), ptr::null_mut());
gst::gst_init(ptr::null_mut(), ptr::null_mut());
}
}
#[test]
fn test_fields() {
init();
let mut buffer = Buffer::new();
{
let buffer = buffer.get_mut().unwrap();
buffer.set_pts(Some(1));
buffer.set_dts(Some(2));
buffer.set_offset(Some(3));
buffer.set_offset_end(Some(4));
buffer.set_duration(Some(5));
}
assert_eq!(buffer.get_pts(), Some(1));
assert_eq!(buffer.get_dts(), Some(2));
assert_eq!(buffer.get_offset(), Some(3));
assert_eq!(buffer.get_offset_end(), Some(4));
assert_eq!(buffer.get_duration(), Some(5));
}
#[test]
fn test_writability() {
init();

5
gst-plugin/src/lib.rs
View file

@ -17,6 +17,11 @@ extern crate slog;
extern crate lazy_static;
extern crate byteorder;
extern crate num_rational;
#[macro_use]
extern crate derivative;
extern crate gobject_sys as gobject;
extern crate glib_sys as glib;
extern crate gstreamer_sys as gst;
#[macro_use]
pub mod utils;