mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer-rs.git
synced 2024-06-10 18:29:24 +00:00
fe319af598
The trait FormattedValue was only implemented on types which
could implement the full range of values for a Format. In order
to declare a function which could take both the intrinsic type
of any Format (e.g. `ClockTime`) as well the full range of values
(e.g. `Option<ClockTime>`), the argument was declared:
```rust
impl Into<GenericFormattedValue>,
```
This commit implements `FormattedValue` for any type representing
a format. E.g.: both `ClockTime` and `Option<ClockTime>` will now
implement `FormattedValue`. The trait `FormattedValueFullRange`
is implemented on types which can be built from any raw value.
These changes are intended to help for the implementation of a
means to enforce format conformity at compilation time for
functions with multiple formatted value arguments.
The following signatures were found to be incorrect and are fixed:
- `message::StepDone`: forced the type for `amount` and `duration`
to be of the same type, when `duration` is expected to be of the
`Time` format.
- `query::Convert::set`: the two arguments were forced to the same
type, so potentialy the same format, unless a
`GenericFormattedValue` was used.
See https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/merge_requests/1059
138 lines
4.2 KiB
Rust
138 lines
4.2 KiB
Rust
// Take a look at the license at the top of the repository in the LICENSE file.
|
|
|
|
use crate::BaseParse;
|
|
use crate::BaseParseFrame;
|
|
use glib::prelude::*;
|
|
use glib::translate::*;
|
|
use std::mem;
|
|
|
|
pub trait BaseParseExtManual: 'static {
|
|
#[doc(alias = "get_sink_pad")]
|
|
fn sink_pad(&self) -> &gst::Pad;
|
|
#[doc(alias = "get_src_pad")]
|
|
fn src_pad(&self) -> &gst::Pad;
|
|
|
|
#[doc(alias = "gst_base_parse_set_duration")]
|
|
fn set_duration(&self, duration: impl gst::FormattedValue, interval: u32);
|
|
#[doc(alias = "gst_base_parse_set_frame_rate")]
|
|
fn set_frame_rate(&self, fps: gst::Fraction, lead_in: u32, lead_out: u32);
|
|
|
|
#[doc(alias = "gst_base_parse_convert_default")]
|
|
fn convert_default<U: gst::SpecificFormattedValueFullRange>(
|
|
&self,
|
|
src_val: impl gst::FormattedValue,
|
|
) -> Option<U>;
|
|
fn convert_default_generic(
|
|
&self,
|
|
src_val: impl gst::FormattedValue,
|
|
dest_format: gst::Format,
|
|
) -> Option<gst::GenericFormattedValue>;
|
|
|
|
#[doc(alias = "gst_base_parse_finish_frame")]
|
|
fn finish_frame(
|
|
&self,
|
|
frame: BaseParseFrame,
|
|
size: u32,
|
|
) -> Result<gst::FlowSuccess, gst::FlowError>;
|
|
}
|
|
|
|
impl<O: IsA<BaseParse>> BaseParseExtManual for O {
|
|
fn sink_pad(&self) -> &gst::Pad {
|
|
unsafe {
|
|
let elt = &*(self.as_ptr() as *const ffi::GstBaseParse);
|
|
&*(&elt.sinkpad as *const *mut gst::ffi::GstPad as *const gst::Pad)
|
|
}
|
|
}
|
|
|
|
fn src_pad(&self) -> &gst::Pad {
|
|
unsafe {
|
|
let elt = &*(self.as_ptr() as *const ffi::GstBaseParse);
|
|
&*(&elt.srcpad as *const *mut gst::ffi::GstPad as *const gst::Pad)
|
|
}
|
|
}
|
|
|
|
fn set_duration(&self, duration: impl gst::FormattedValue, interval: u32) {
|
|
unsafe {
|
|
ffi::gst_base_parse_set_duration(
|
|
self.as_ref().to_glib_none().0,
|
|
duration.format().into_glib(),
|
|
duration.into_raw_value(),
|
|
interval as i32,
|
|
);
|
|
}
|
|
}
|
|
|
|
fn set_frame_rate(&self, fps: gst::Fraction, lead_in: u32, lead_out: u32) {
|
|
let (fps_num, fps_den) = fps.into();
|
|
unsafe {
|
|
ffi::gst_base_parse_set_frame_rate(
|
|
self.as_ref().to_glib_none().0,
|
|
fps_num as u32,
|
|
fps_den as u32,
|
|
lead_in,
|
|
lead_out,
|
|
);
|
|
}
|
|
}
|
|
|
|
fn convert_default<U: gst::SpecificFormattedValueFullRange>(
|
|
&self,
|
|
src_val: impl gst::FormattedValue,
|
|
) -> Option<U> {
|
|
unsafe {
|
|
let mut dest_val = mem::MaybeUninit::uninit();
|
|
let ret = from_glib(ffi::gst_base_parse_convert_default(
|
|
self.as_ref().to_glib_none().0,
|
|
src_val.format().into_glib(),
|
|
src_val.into_raw_value(),
|
|
U::default_format().into_glib(),
|
|
dest_val.as_mut_ptr(),
|
|
));
|
|
if ret {
|
|
Some(U::from_raw(U::default_format(), dest_val.assume_init()))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
fn convert_default_generic(
|
|
&self,
|
|
src_val: impl gst::FormattedValue,
|
|
dest_format: gst::Format,
|
|
) -> Option<gst::GenericFormattedValue> {
|
|
unsafe {
|
|
let mut dest_val = mem::MaybeUninit::uninit();
|
|
let ret = from_glib(ffi::gst_base_parse_convert_default(
|
|
self.as_ref().to_glib_none().0,
|
|
src_val.format().into_glib(),
|
|
src_val.into_raw_value(),
|
|
dest_format.into_glib(),
|
|
dest_val.as_mut_ptr(),
|
|
));
|
|
if ret {
|
|
Some(gst::GenericFormattedValue::new(
|
|
dest_format,
|
|
dest_val.assume_init(),
|
|
))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
|
|
fn finish_frame(
|
|
&self,
|
|
frame: BaseParseFrame,
|
|
size: u32,
|
|
) -> Result<gst::FlowSuccess, gst::FlowError> {
|
|
unsafe {
|
|
try_from_glib(ffi::gst_base_parse_finish_frame(
|
|
self.as_ref().to_glib_none().0,
|
|
frame.to_glib_none().0,
|
|
i32::try_from(size).expect("size higher than i32::MAX"),
|
|
))
|
|
}
|
|
}
|
|
}
|