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app: Remove signals bindings from appsrc/appsink for the signals that also have callbacks

Browse source 
The callbacks are more flexible and performant.

Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer-rs/-/issues/338
This commit is contained in:
Sebastian Dröge 2021-05-30 20:22:05 +03:00
parent 33484258d1
commit 04e6c1b547
4 changed files with 136 additions and 323 deletions
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54
gstreamer-app/Gir.toml
View file

@ -61,17 +61,35 @@ final_type = true
# Action signal
ignore = true
[[object.property]]
name = "emit-signals"
# Use callbacks instead
ignore = true
[[object.function]]
name = "get_emit_signals"
# Use callbacks instead
ignore = true
[[object.function]]
name = "set_emit_signals"
# Use callbacks instead
ignore = true
[[object.signal]]
name = "new-sample"
concurrency = "send"
# Use callbacks instead
ignore = true
[[object.signal]]
name = "new-preroll"
concurrency = "send"
# Use callbacks instead
ignore = true
[[object.signal]]
name = "eos"
concurrency = "send"
# Use callbacks instead
ignore = true
[[object.function]]
name = "set_caps"
@ -124,6 +142,36 @@ final_type = true
# Action signal
ignore = true
[[object.property]]
name = "emit-signals"
# Use callbacks instead
ignore = true
[[object.function]]
name = "get_emit_signals"
# Use callbacks instead
ignore = true
[[object.function]]
name = "set_emit_signals"
# Use callbacks instead
ignore = true
[[object.signal]]
name = "enough-data"
# Use callbacks instead
ignore = true
[[object.signal]]
name = "need-data"
# Use callbacks instead
ignore = true
[[object.signal]]
name = "seek-data"
# Use callbacks instead
ignore = true
[[object.function]]
name = "set_latency"
# ClockTime

121
gstreamer-app/src/auto/app_sink.rs
View file

@ -45,12 +45,6 @@ impl AppSink {
unsafe { from_glib(ffi::gst_app_sink_get_drop(self.to_glib_none().0)) }
}
#[doc(alias = "gst_app_sink_get_emit_signals")]
#[doc(alias = "get_emit_signals")]
pub fn emits_signals(&self) -> bool {
unsafe { from_glib(ffi::gst_app_sink_get_emit_signals(self.to_glib_none().0)) }
}
#[doc(alias = "gst_app_sink_get_max_buffers")]
#[doc(alias = "get_max_buffers")]
pub fn max_buffers(&self) -> u32 {
@ -115,13 +109,6 @@ impl AppSink {
}
}
#[doc(alias = "gst_app_sink_set_emit_signals")]
pub fn set_emit_signals(&self, emit: bool) {
unsafe {
ffi::gst_app_sink_set_emit_signals(self.to_glib_none().0, emit.into_glib());
}
}
#[doc(alias = "gst_app_sink_set_max_buffers")]
pub fn set_max_buffers(&self, max: u32) {
unsafe {
@ -186,86 +173,6 @@ impl AppSink {
}
}
#[doc(alias = "eos")]
pub fn connect_eos<F: Fn(&Self) + Send + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn eos_trampoline<F: Fn(&AppSink) + Send + 'static>(
this: *mut ffi::GstAppSink,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this))
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"eos\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
eos_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "new-preroll")]
pub fn connect_new_preroll<
F: Fn(&Self) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
>(
&self,
f: F,
) -> SignalHandlerId {
unsafe extern "C" fn new_preroll_trampoline<
F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
>(
this: *mut ffi::GstAppSink,
f: glib::ffi::gpointer,
) -> gst::ffi::GstFlowReturn {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this)).into_glib()
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"new-preroll\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
new_preroll_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "new-sample")]
pub fn connect_new_sample<
F: Fn(&Self) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
>(
&self,
f: F,
) -> SignalHandlerId {
unsafe extern "C" fn new_sample_trampoline<
F: Fn(&AppSink) -> Result<gst::FlowSuccess, gst::FlowError> + Send + 'static,
>(
this: *mut ffi::GstAppSink,
f: glib::ffi::gpointer,
) -> gst::ffi::GstFlowReturn {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this)).into_glib()
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"new-sample\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
new_sample_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "buffer-list")]
pub fn connect_buffer_list_notify<F: Fn(&Self) + Send + Sync + 'static>(
&self,
@ -346,34 +253,6 @@ impl AppSink {
}
}
#[doc(alias = "emit-signals")]
pub fn connect_emit_signals_notify<F: Fn(&Self) + Send + Sync + 'static>(
&self,
f: F,
) -> SignalHandlerId {
unsafe extern "C" fn notify_emit_signals_trampoline<
F: Fn(&AppSink) + Send + Sync + 'static,
>(
this: *mut ffi::GstAppSink,
_param_spec: glib::ffi::gpointer,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this))
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"notify::emit-signals\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
notify_emit_signals_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "eos")]
pub fn connect_eos_notify<F: Fn(&Self) + Send + Sync + 'static>(
&self,

120
gstreamer-app/src/auto/app_src.rs
View file

@ -47,12 +47,6 @@ impl AppSrc {
unsafe { from_glib(ffi::gst_app_src_get_duration(self.to_glib_none().0)) }
}
#[doc(alias = "gst_app_src_get_emit_signals")]
#[doc(alias = "get_emit_signals")]
pub fn emits_signals(&self) -> bool {
unsafe { from_glib(ffi::gst_app_src_get_emit_signals(self.to_glib_none().0)) }
}
#[doc(alias = "gst_app_src_get_max_bytes")]
#[doc(alias = "get_max_bytes")]
pub fn max_bytes(&self) -> u64 {
@ -102,13 +96,6 @@ impl AppSrc {
}
}
#[doc(alias = "gst_app_src_set_emit_signals")]
pub fn set_emit_signals(&self, emit: bool) {
unsafe {
ffi::gst_app_src_set_emit_signals(self.to_glib_none().0, emit.into_glib());
}
}
#[doc(alias = "gst_app_src_set_max_bytes")]
pub fn set_max_bytes(&self, max: u64) {
unsafe {
@ -312,85 +299,6 @@ impl AppSrc {
}
}
#[doc(alias = "enough-data")]
pub fn connect_enough_data<F: Fn(&Self) + Send + Sync + 'static>(
&self,
f: F,
) -> SignalHandlerId {
unsafe extern "C" fn enough_data_trampoline<F: Fn(&AppSrc) + Send + Sync + 'static>(
this: *mut ffi::GstAppSrc,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this))
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"enough-data\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
enough_data_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "need-data")]
pub fn connect_need_data<F: Fn(&Self, u32) + Send + Sync + 'static>(
&self,
f: F,
) -> SignalHandlerId {
unsafe extern "C" fn need_data_trampoline<F: Fn(&AppSrc, u32) + Send + Sync + 'static>(
this: *mut ffi::GstAppSrc,
length: libc::c_uint,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this), length)
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"need-data\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
need_data_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "seek-data")]
pub fn connect_seek_data<F: Fn(&Self, u64) -> bool + Send + Sync + 'static>(
&self,
f: F,
) -> SignalHandlerId {
unsafe extern "C" fn seek_data_trampoline<
F: Fn(&AppSrc, u64) -> bool + Send + Sync + 'static,
>(
this: *mut ffi::GstAppSrc,
offset: u64,
f: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this), offset).into_glib()
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"seek-data\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
seek_data_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "block")]
pub fn connect_block_notify<F: Fn(&Self) + Send + Sync + 'static>(
&self,
@ -499,34 +407,6 @@ impl AppSrc {
}
}
#[doc(alias = "emit-signals")]
pub fn connect_emit_signals_notify<F: Fn(&Self) + Send + Sync + 'static>(
&self,
f: F,
) -> SignalHandlerId {
unsafe extern "C" fn notify_emit_signals_trampoline<
F: Fn(&AppSrc) + Send + Sync + 'static,
>(
this: *mut ffi::GstAppSrc,
_param_spec: glib::ffi::gpointer,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(&from_glib_borrow(this))
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"notify::emit-signals\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
notify_emit_signals_trampoline::<F> as *const (),
)),
Box_::into_raw(f),
)
}
}
#[doc(alias = "format")]
pub fn connect_format_notify<F: Fn(&Self) + Send + Sync + 'static>(
&self,

164
tutorials/src/bin/basic-tutorial-8.rs
View file

@ -136,105 +136,111 @@ fn main() {
let data: Arc<Mutex<CustomData>> = Arc::new(Mutex::new(CustomData::new(&appsrc, &appsink)));
let data_weak = Arc::downgrade(&data);
appsrc.connect_need_data(move |_, _size| {
let data = match data_weak.upgrade() {
Some(data) => data,
None => return,
};
let mut d = data.lock().unwrap();
if d.source_id.is_none() {
println!("start feeding");
let data_weak = Arc::downgrade(&data);
d.source_id = Some(glib::source::idle_add(move || {
let data_weak2 = Arc::downgrade(&data);
appsrc.set_callbacks(
gst_app::AppSrcCallbacks::builder()
.need_data(move |_, _size| {
let data = match data_weak.upgrade() {
Some(data) => data,
None => return glib::Continue(false),
None => return,
};
let mut d = data.lock().unwrap();
let (appsrc, buffer) = {
let mut data = data.lock().unwrap();
let mut buffer = gst::Buffer::with_size(CHUNK_SIZE).unwrap();
let num_samples = CHUNK_SIZE / 2; /* Each sample is 16 bits */
let pts = gst::SECOND
.mul_div_floor(data.num_samples, u64::from(SAMPLE_RATE))
.expect("u64 overflow");
let duration = gst::SECOND
.mul_div_floor(num_samples as u64, u64::from(SAMPLE_RATE))
.expect("u64 overflow");
if d.source_id.is_none() {
println!("start feeding");
{
let buffer = buffer.get_mut().unwrap();
{
let mut samples = buffer.map_writable().unwrap();
let samples = samples.as_mut_slice_of::<i16>().unwrap();
let data_weak = Arc::downgrade(&data);
d.source_id = Some(glib::source::idle_add(move || {
let data = match data_weak.upgrade() {
Some(data) => data,
None => return glib::Continue(false),
};
// Generate some psychodelic waveforms
data.c += data.d;
data.d -= data.c / 1000.0;
let freq = 1100.0 + 1000.0 * data.d;
let (appsrc, buffer) = {
let mut data = data.lock().unwrap();
let mut buffer = gst::Buffer::with_size(CHUNK_SIZE).unwrap();
let num_samples = CHUNK_SIZE / 2; /* Each sample is 16 bits */
let pts = gst::SECOND
.mul_div_floor(data.num_samples, u64::from(SAMPLE_RATE))
.expect("u64 overflow");
let duration = gst::SECOND
.mul_div_floor(num_samples as u64, u64::from(SAMPLE_RATE))
.expect("u64 overflow");
for sample in samples.iter_mut() {
data.a += data.b;
data.b -= data.a / freq;
*sample = 500 * (data.a as i16);
{
let buffer = buffer.get_mut().unwrap();
{
let mut samples = buffer.map_writable().unwrap();
let samples = samples.as_mut_slice_of::<i16>().unwrap();
// Generate some psychodelic waveforms
data.c += data.d;
data.d -= data.c / 1000.0;
let freq = 1100.0 + 1000.0 * data.d;
for sample in samples.iter_mut() {
data.a += data.b;
data.b -= data.a / freq;
*sample = 500 * (data.a as i16);
}
data.num_samples += num_samples as u64;
}
buffer.set_pts(pts);
buffer.set_duration(duration);
}
data.num_samples += num_samples as u64;
}
(data.appsrc.clone(), buffer)
};
buffer.set_pts(pts);
buffer.set_duration(duration);
}
(data.appsrc.clone(), buffer)
glib::Continue(appsrc.push_buffer(buffer).is_ok())
}));
}
})
.enough_data(move |_| {
let data = match data_weak2.upgrade() {
Some(data) => data,
None => return,
};
glib::Continue(appsrc.push_buffer(buffer).is_ok())
}));
}
});
let data_weak = Arc::downgrade(&data);
appsrc.connect_enough_data(move |_| {
let data = match data_weak.upgrade() {
Some(data) => data,
None => return,
};
let mut data = data.lock().unwrap();
if let Some(source) = data.source_id.take() {
println!("stop feeding");
glib::source::source_remove(source);
}
});
let mut data = data.lock().unwrap();
if let Some(source) = data.source_id.take() {
println!("stop feeding");
glib::source::source_remove(source);
}
})
.build(),
);
// configure appsink
appsink.set_emit_signals(true);
appsink.set_caps(Some(&audio_caps));
let data_weak = Arc::downgrade(&data);
appsink.connect_new_sample(move |_| {
let data = match data_weak.upgrade() {
Some(data) => data,
None => return Ok(gst::FlowSuccess::Ok),
};
appsink.set_callbacks(
gst_app::AppSinkCallbacks::builder()
.new_sample(move |_| {
let data = match data_weak.upgrade() {
Some(data) => data,
None => return Ok(gst::FlowSuccess::Ok),
};
let appsink = {
let data = data.lock().unwrap();
data.appsink.clone()
};
let appsink = {
let data = data.lock().unwrap();
data.appsink.clone()
};
if let Ok(_sample) = appsink.pull_sample() {
use std::io::{self, Write};
// The only thing we do in this example is print a * to indicate a received buffer
print!("*");
let _ = io::stdout().flush();
}
if let Ok(_sample) = appsink.pull_sample() {
use std::io::{self, Write};
// The only thing we do in this example is print a * to indicate a received buffer
print!("*");
let _ = io::stdout().flush();
}
Ok(gst::FlowSuccess::Ok)
});
Ok(gst::FlowSuccess::Ok)
})
.build(),
);
let main_loop = glib::MainLoop::new(None, false);
let main_loop_clone = main_loop.clone();