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Don't derive Debug impls for generic types where the type parameters don't have to impl Debug themselves

Browse source 
This allows to use MappedBuffer and similar types to be properly
debug-printed.

Also change VideoFrame/VideoFrameRef/RTPBuffer from a tuple struct to a
struct with proper field names to make the code easier to understand.
This commit is contained in:
Sebastian Dröge 2020-01-22 19:08:27 +02:00
parent 280fe38fe4
commit d3c77f400d
5 changed files with 233 additions and 73 deletions
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44
gstreamer-rtp/src/rtp_buffer.rs
View file

@ -1,4 +1,5 @@
use glib::translate::{from_glib, FromGlibPtrFull};
use std::fmt;
use std::marker::PhantomData;
use std::mem;
@ -8,12 +9,25 @@ use gst_rtp_sys;
pub enum Readable {}
pub enum Writable {}
#[repr(C)]
pub struct RTPBuffer<'a, T>(gst_rtp_sys::GstRTPBuffer, &'a gst::Buffer, PhantomData<T>);
pub struct RTPBuffer<'a, T> {
rtp_buffer: gst_rtp_sys::GstRTPBuffer,
buffer: &'a gst::Buffer,
phantom: PhantomData<T>,
}
unsafe impl<'a, T> Send for RTPBuffer<'a, T> {}
unsafe impl<'a, T> Sync for RTPBuffer<'a, T> {}
impl<'a, T> fmt::Debug for RTPBuffer<'a, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("RTPBuffer")
.field("rtp_buffer", &self.rtp_buffer)
.field("buffer", &self.buffer)
.field("phantom", &self.phantom)
.finish()
}
}
impl<'a> RTPBuffer<'a, Readable> {
pub fn from_buffer_readable(
buffer: &gst::Buffer,
@ -27,7 +41,11 @@ impl<'a> RTPBuffer<'a, Readable> {
));
if res {
Ok(RTPBuffer(rtp_buffer.assume_init(), buffer, PhantomData))
Ok(RTPBuffer {
rtp_buffer: rtp_buffer.assume_init(),
buffer,
phantom: PhantomData,
})
} else {
Err(glib_bool_error!("Failed to map RTP buffer readable"))
}
@ -48,7 +66,11 @@ impl<'a> RTPBuffer<'a, Writable> {
));
if res {
Ok(RTPBuffer(rtp_buffer.assume_init(), buffer, PhantomData))
Ok(RTPBuffer {
rtp_buffer: rtp_buffer.assume_init(),
buffer,
phantom: PhantomData,
})
} else {
Err(glib_bool_error!("Failed to map RTP buffer writable"))
}
@ -57,41 +79,41 @@ impl<'a> RTPBuffer<'a, Writable> {
pub fn set_seq(&mut self, seq: u16) {
unsafe {
gst_rtp_sys::gst_rtp_buffer_set_seq(&mut self.0, seq);
gst_rtp_sys::gst_rtp_buffer_set_seq(&mut self.rtp_buffer, seq);
}
}
pub fn set_payload_type(&mut self, pt: u8) {
unsafe {
gst_rtp_sys::gst_rtp_buffer_set_payload_type(&mut self.0, pt);
gst_rtp_sys::gst_rtp_buffer_set_payload_type(&mut self.rtp_buffer, pt);
}
}
pub fn set_timestamp(&mut self, rtptime: u32) {
unsafe {
gst_rtp_sys::gst_rtp_buffer_set_timestamp(&mut self.0, rtptime);
gst_rtp_sys::gst_rtp_buffer_set_timestamp(&mut self.rtp_buffer, rtptime);
}
}
}
impl<'a, T> RTPBuffer<'a, T> {
pub fn get_seq(&mut self) -> u16 {
unsafe { gst_rtp_sys::gst_rtp_buffer_get_seq(&mut self.0) }
unsafe { gst_rtp_sys::gst_rtp_buffer_get_seq(&mut self.rtp_buffer) }
}
pub fn get_payload_type(&mut self) -> u8 {
unsafe { gst_rtp_sys::gst_rtp_buffer_get_payload_type(&mut self.0) }
unsafe { gst_rtp_sys::gst_rtp_buffer_get_payload_type(&mut self.rtp_buffer) }
}
pub fn get_timestamp(&mut self) -> u32 {
unsafe { gst_rtp_sys::gst_rtp_buffer_get_timestamp(&mut self.0) }
unsafe { gst_rtp_sys::gst_rtp_buffer_get_timestamp(&mut self.rtp_buffer) }
}
}
impl<'a, T> Drop for RTPBuffer<'a, T> {
fn drop(&mut self) {
unsafe {
gst_rtp_sys::gst_rtp_buffer_unmap(&mut self.0);
gst_rtp_sys::gst_rtp_buffer_unmap(&mut self.rtp_buffer);
}
}
}

207
gstreamer-video/src/video_frame.rs
View file

@ -14,6 +14,7 @@ use glib::translate::{from_glib, ToGlibPtr};
use gst;
use gst::miniobject::MiniObject;
use std::fmt;
use std::marker::PhantomData;
use std::mem;
use std::ops;
@ -23,37 +24,50 @@ use std::slice;
pub enum Readable {}
pub enum Writable {}
#[derive(Debug)]
pub struct VideoFrame<T>(
gst_video_sys::GstVideoFrame,
Option<gst::Buffer>,
::VideoInfo,
PhantomData<T>,
);
pub struct VideoFrame<T> {
frame: gst_video_sys::GstVideoFrame,
buffer: Option<gst::Buffer>,
info: ::VideoInfo,
phantom: PhantomData<T>,
}
unsafe impl<T> Send for VideoFrame<T> {}
unsafe impl<T> Sync for VideoFrame<T> {}
impl<T> fmt::Debug for VideoFrame<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("VideoFrame")
.field("frame", &self.frame)
.field("buffer", &self.buffer)
.field("info", &self.info)
.field("phantom", &self.phantom)
.finish()
}
}
impl<T> VideoFrame<T> {
pub fn info(&self) -> &::VideoInfo {
&self.2
&self.info
}
pub fn flags(&self) -> ::VideoFrameFlags {
from_glib(self.0.flags)
from_glib(self.frame.flags)
}
pub fn id(&self) -> i32 {
self.0.id
self.frame.id
}
pub fn into_buffer(mut self) -> gst::Buffer {
self.1.take().unwrap()
self.buffer.take().unwrap()
}
pub fn copy(&self, dest: &mut VideoFrame<Writable>) -> Result<(), glib::BoolError> {
unsafe {
let res: bool = from_glib(gst_video_sys::gst_video_frame_copy(&mut dest.0, &self.0));
let res: bool = from_glib(gst_video_sys::gst_video_frame_copy(
&mut dest.frame,
&self.frame,
));
if res {
Ok(())
} else {
@ -71,8 +85,8 @@ impl<T> VideoFrame<T> {
unsafe {
let res: bool = from_glib(gst_video_sys::gst_video_frame_copy_plane(
&mut dest.0,
&self.0,
&mut dest.frame,
&self.frame,
plane,
));
if res {
@ -136,7 +150,7 @@ impl<T> VideoFrame<T> {
}
pub fn buffer(&self) -> &gst::BufferRef {
unsafe { gst::BufferRef::from_ptr(self.0.buffer) }
unsafe { gst::BufferRef::from_ptr(self.frame.buffer) }
}
pub fn plane_data(&self, plane: u32) -> Result<&[u8], glib::BoolError> {
@ -149,7 +163,10 @@ impl<T> VideoFrame<T> {
// Just get the palette
if format_info.has_palette() && plane == 1 {
unsafe {
return Ok(slice::from_raw_parts(self.0.data[1] as *const u8, 256 * 4));
return Ok(slice::from_raw_parts(
self.frame.data[1] as *const u8,
256 * 4,
));
}
}
@ -160,7 +177,7 @@ impl<T> VideoFrame<T> {
unsafe {
Ok(slice::from_raw_parts(
self.0.data[plane as usize] as *const u8,
self.frame.data[plane as usize] as *const u8,
(w * h) as usize,
))
}
@ -169,14 +186,19 @@ impl<T> VideoFrame<T> {
pub unsafe fn from_glib_full(frame: gst_video_sys::GstVideoFrame) -> Self {
let info = ::VideoInfo(ptr::read(&frame.info));
let buffer = gst::Buffer::from_glib_none(frame.buffer);
VideoFrame(frame, Some(buffer), info, PhantomData)
VideoFrame {
frame,
buffer: Some(buffer),
info,
phantom: PhantomData,
}
}
}
impl<T> Drop for VideoFrame<T> {
fn drop(&mut self) {
unsafe {
gst_video_sys::gst_video_frame_unmap(&mut self.0);
gst_video_sys::gst_video_frame_unmap(&mut self.frame);
}
}
}
@ -202,7 +224,12 @@ impl VideoFrame<Readable> {
} else {
let frame = frame.assume_init();
let info = ::VideoInfo(ptr::read(&frame.info));
Ok(VideoFrame(frame, Some(buffer), info, PhantomData))
Ok(VideoFrame {
frame,
buffer: Some(buffer),
info,
phantom: PhantomData,
})
}
}
}
@ -229,19 +256,29 @@ impl VideoFrame<Readable> {
} else {
let frame = frame.assume_init();
let info = ::VideoInfo(ptr::read(&frame.info));
Ok(VideoFrame(frame, Some(buffer), info, PhantomData))
Ok(VideoFrame {
frame,
buffer: Some(buffer),
info,
phantom: PhantomData,
})
}
}
}
pub fn as_video_frame_ref(&self) -> VideoFrameRef<&gst::BufferRef> {
let vframe = unsafe { ptr::read(&self.0) };
let info = self.2.clone();
VideoFrameRef(vframe, Some(self.buffer()), info, true)
let frame = unsafe { ptr::read(&self.frame) };
let info = self.info.clone();
VideoFrameRef {
frame,
buffer: Some(self.buffer()),
info,
borrowed: true,
}
}
pub fn as_ptr(&self) -> *const gst_video_sys::GstVideoFrame {
&self.0
&self.frame
}
}
@ -268,7 +305,12 @@ impl VideoFrame<Writable> {
} else {
let frame = frame.assume_init();
let info = ::VideoInfo(ptr::read(&frame.info));
Ok(VideoFrame(frame, Some(buffer), info, PhantomData))
Ok(VideoFrame {
frame,
buffer: Some(buffer),
info,
phantom: PhantomData,
})
}
}
}
@ -297,13 +339,18 @@ impl VideoFrame<Writable> {
} else {
let frame = frame.assume_init();
let info = ::VideoInfo(ptr::read(&frame.info));
Ok(VideoFrame(frame, Some(buffer), info, PhantomData))
Ok(VideoFrame {
frame,
buffer: Some(buffer),
info,
phantom: PhantomData,
})
}
}
}
pub fn buffer_mut(&mut self) -> &mut gst::BufferRef {
unsafe { gst::BufferRef::from_mut_ptr(self.0.buffer) }
unsafe { gst::BufferRef::from_mut_ptr(self.frame.buffer) }
}
pub fn plane_data_mut(&mut self, plane: u32) -> Result<&mut [u8], glib::BoolError> {
@ -317,7 +364,7 @@ impl VideoFrame<Writable> {
if format_info.has_palette() && plane == 1 {
unsafe {
return Ok(slice::from_raw_parts_mut(
self.0.data[1] as *mut u8,
self.frame.data[1] as *mut u8,
256 * 4,
));
}
@ -330,29 +377,39 @@ impl VideoFrame<Writable> {
unsafe {
Ok(slice::from_raw_parts_mut(
self.0.data[plane as usize] as *mut u8,
self.frame.data[plane as usize] as *mut u8,
(w * h) as usize,
))
}
}
pub fn as_mut_video_frame_ref(&mut self) -> VideoFrameRef<&mut gst::BufferRef> {
let vframe = unsafe { ptr::read(&self.0) };
let info = self.2.clone();
VideoFrameRef(vframe, Some(self.buffer_mut()), info, true)
let frame = unsafe { ptr::read(&self.frame) };
let info = self.info.clone();
VideoFrameRef {
frame,
buffer: Some(self.buffer_mut()),
info,
borrowed: true,
}
}
pub fn as_mut_ptr(&mut self) -> *mut gst_video_sys::GstVideoFrame {
&mut self.0
&mut self.frame
}
}
#[derive(Debug)]
pub struct VideoFrameRef<T>(gst_video_sys::GstVideoFrame, Option<T>, ::VideoInfo, bool);
pub struct VideoFrameRef<T> {
frame: gst_video_sys::GstVideoFrame,
buffer: Option<T>,
info: ::VideoInfo,
borrowed: bool,
}
impl<'a> VideoFrameRef<&'a gst::BufferRef> {
pub fn as_ptr(&self) -> *const gst_video_sys::GstVideoFrame {
&self.0
&self.frame
}
pub unsafe fn from_glib_borrow(frame: *const gst_video_sys::GstVideoFrame) -> Self {
@ -361,7 +418,12 @@ impl<'a> VideoFrameRef<&'a gst::BufferRef> {
let frame = ptr::read(frame);
let info = ::VideoInfo(ptr::read(&frame.info));
let buffer = gst::BufferRef::from_ptr(frame.buffer);
VideoFrameRef(frame, Some(buffer), info, false)
VideoFrameRef {
frame,
buffer: Some(buffer),
info,
borrowed: false,
}
}
pub fn from_buffer_ref_readable<'b>(
@ -384,7 +446,12 @@ impl<'a> VideoFrameRef<&'a gst::BufferRef> {
} else {
let frame = frame.assume_init();
let info = ::VideoInfo(ptr::read(&frame.info));
Ok(VideoFrameRef(frame, Some(buffer), info, false))
Ok(VideoFrameRef {
frame,
buffer: Some(buffer),
info,
borrowed: false,
})
}
}
}
@ -411,21 +478,26 @@ impl<'a> VideoFrameRef<&'a gst::BufferRef> {
} else {
let frame = frame.assume_init();
let info = ::VideoInfo(ptr::read(&frame.info));
Ok(VideoFrameRef(frame, Some(buffer), info, false))
Ok(VideoFrameRef {
frame,
buffer: Some(buffer),
info,
borrowed: false,
})
}
}
}
pub fn info(&self) -> &::VideoInfo {
&self.2
&self.info
}
pub fn flags(&self) -> ::VideoFrameFlags {
from_glib(self.0.flags)
from_glib(self.frame.flags)
}
pub fn id(&self) -> i32 {
self.0.id
self.frame.id
}
pub fn copy(
@ -433,7 +505,10 @@ impl<'a> VideoFrameRef<&'a gst::BufferRef> {
dest: &mut VideoFrameRef<&mut gst::BufferRef>,
) -> Result<(), glib::BoolError> {
unsafe {
let res: bool = from_glib(gst_video_sys::gst_video_frame_copy(&mut dest.0, &self.0));
let res: bool = from_glib(gst_video_sys::gst_video_frame_copy(
&mut dest.frame,
&self.frame,
));
if res {
Ok(())
} else {
@ -451,8 +526,8 @@ impl<'a> VideoFrameRef<&'a gst::BufferRef> {
unsafe {
let res: bool = from_glib(gst_video_sys::gst_video_frame_copy_plane(
&mut dest.0,
&self.0,
&mut dest.frame,
&self.frame,
plane,
));
if res {
@ -516,7 +591,7 @@ impl<'a> VideoFrameRef<&'a gst::BufferRef> {
}
pub fn buffer(&self) -> &gst::BufferRef {
self.1.as_ref().unwrap()
self.buffer.as_ref().unwrap()
}
pub fn plane_data(&self, plane: u32) -> Result<&[u8], glib::BoolError> {
@ -529,7 +604,10 @@ impl<'a> VideoFrameRef<&'a gst::BufferRef> {
// Just get the palette
if format_info.has_palette() && plane == 1 {
unsafe {
return Ok(slice::from_raw_parts(self.0.data[1] as *const u8, 256 * 4));
return Ok(slice::from_raw_parts(
self.frame.data[1] as *const u8,
256 * 4,
));
}
}
@ -540,7 +618,7 @@ impl<'a> VideoFrameRef<&'a gst::BufferRef> {
unsafe {
Ok(slice::from_raw_parts(
self.0.data[plane as usize] as *const u8,
self.frame.data[plane as usize] as *const u8,
(w * h) as usize,
))
}
@ -554,7 +632,12 @@ impl<'a> VideoFrameRef<&'a mut gst::BufferRef> {
let frame = ptr::read(frame);
let info = ::VideoInfo(ptr::read(&frame.info));
let buffer = gst::BufferRef::from_mut_ptr(frame.buffer);
VideoFrameRef(frame, Some(buffer), info, false)
VideoFrameRef {
frame,
buffer: Some(buffer),
info,
borrowed: false,
}
}
pub fn from_buffer_ref_writable<'b>(
@ -579,7 +662,12 @@ impl<'a> VideoFrameRef<&'a mut gst::BufferRef> {
} else {
let frame = frame.assume_init();
let info = ::VideoInfo(ptr::read(&frame.info));
Ok(VideoFrameRef(frame, Some(buffer), info, false))
Ok(VideoFrameRef {
frame,
buffer: Some(buffer),
info,
borrowed: false,
})
}
}
}
@ -608,13 +696,18 @@ impl<'a> VideoFrameRef<&'a mut gst::BufferRef> {
} else {
let frame = frame.assume_init();
let info = ::VideoInfo(ptr::read(&frame.info));
Ok(VideoFrameRef(frame, Some(buffer), info, false))
Ok(VideoFrameRef {
frame,
buffer: Some(buffer),
info,
borrowed: false,
})
}
}
}
pub fn buffer_mut(&mut self) -> &mut gst::BufferRef {
self.1.as_mut().unwrap()
self.buffer.as_mut().unwrap()
}
pub fn plane_data_mut(&mut self, plane: u32) -> Result<&mut [u8], glib::BoolError> {
@ -628,7 +721,7 @@ impl<'a> VideoFrameRef<&'a mut gst::BufferRef> {
if format_info.has_palette() && plane == 1 {
unsafe {
return Ok(slice::from_raw_parts_mut(
self.0.data[1] as *mut u8,
self.frame.data[1] as *mut u8,
256 * 4,
));
}
@ -641,14 +734,14 @@ impl<'a> VideoFrameRef<&'a mut gst::BufferRef> {
unsafe {
Ok(slice::from_raw_parts_mut(
self.0.data[plane as usize] as *mut u8,
self.frame.data[plane as usize] as *mut u8,
(w * h) as usize,
))
}
}
pub fn as_mut_ptr(&mut self) -> *mut gst_video_sys::GstVideoFrame {
&mut self.0
&mut self.frame
}
}
@ -668,9 +761,9 @@ unsafe impl<T> Sync for VideoFrameRef<T> {}
impl<T> Drop for VideoFrameRef<T> {
fn drop(&mut self) {
if !self.3 {
if !self.borrowed {
unsafe {
gst_video_sys::gst_video_frame_unmap(&mut self.0);
gst_video_sys::gst_video_frame_unmap(&mut self.frame);
}
}
}

12
gstreamer/src/buffer.rs
View file

@ -596,7 +596,6 @@ impl BufferRef {
macro_rules! define_iter(
($name:ident, $typ:ty, $mtyp:ty, $prepare_buffer:expr, $from_ptr:expr) => {
#[derive(Debug)]
pub struct $name<'a, T: MetaAPI + 'a> {
buffer: $typ,
state: glib_sys::gpointer,
@ -607,6 +606,17 @@ macro_rules! define_iter(
unsafe impl<'a, T: MetaAPI> Send for $name<'a, T> { }
unsafe impl<'a, T: MetaAPI> Sync for $name<'a, T> { }
impl<'a, T: MetaAPI> fmt::Debug for $name<'a, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct(stringify!($name))
.field("buffer", &self.buffer)
.field("state", &self.state)
.field("meta_api", &self.meta_api)
.field("items", &self.items)
.finish()
}
}
impl<'a, T: MetaAPI> $name<'a, T> {
fn new(buffer: $typ) -> $name<'a, T> {
skip_assert_initialized!();

22
gstreamer/src/caps.rs
View file

@ -536,13 +536,22 @@ impl Eq for CapsRef {}
pub enum NoFeature {}
pub enum HasFeatures {}
#[derive(Debug)]
pub struct Builder<T> {
s: ::Structure,
features: Option<CapsFeatures>,
phantom: PhantomData<T>,
}
impl<T> fmt::Debug for Builder<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("Builder")
.field("s", &self.s)
.field("features", &self.features)
.field("phantom", &self.phantom)
.finish()
}
}
impl Builder<NoFeature> {
fn new(name: &str) -> Builder<NoFeature> {
Builder {
@ -588,13 +597,22 @@ impl<T> Builder<T> {
pub enum AnyFeatures {}
pub enum SomeFeatures {}
#[derive(Debug)]
pub struct BuilderFull<T> {
caps: ::Caps,
features: Option<CapsFeatures>,
phantom: PhantomData<T>,
}
impl<T> fmt::Debug for BuilderFull<T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("Builder")
.field("caps", &self.caps)
.field("features", &self.features)
.field("phantom", &self.phantom)
.finish()
}
}
impl BuilderFull<SomeFeatures> {
fn new() -> Self {
BuilderFull {

21
gstreamer/src/meta.rs
View file

@ -71,7 +71,6 @@ pub unsafe trait MetaAPI: Sync + Send + Sized {
}
}
#[derive(Debug)]
pub struct MetaRef<'a, T: MetaAPI + 'a> {
meta: &'a T,
buffer: &'a BufferRef,
@ -80,13 +79,31 @@ pub struct MetaRef<'a, T: MetaAPI + 'a> {
pub enum Standalone {}
pub enum Iterated {}
#[derive(Debug)]
pub struct MetaRefMut<'a, T: MetaAPI + 'a, U> {
meta: &'a mut T,
buffer: &'a mut BufferRef,
mode: PhantomData<U>,
}
impl<'a, T: MetaAPI + fmt::Debug + 'a> fmt::Debug for MetaRef<'a, T> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("MetaRef")
.field("meta", &self.meta)
.field("buffer", &self.buffer)
.finish()
}
}
impl<'a, T: MetaAPI + fmt::Debug + 'a, U> fmt::Debug for MetaRefMut<'a, T, U> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_struct("MetaRef")
.field("meta", &self.meta)
.field("buffer", &self.buffer)
.field("mode", &self.mode)
.finish()
}
}
impl<'a, T: MetaAPI> ops::Deref for MetaRef<'a, T> {
type Target = T;