mirror of
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs.git
synced 2024-09-24 13:00:12 +00:00
Refactor huge create() functions into multiple smaller functions
And don't hold any mutexes when unnecessary, especially not while trying to receive a frame.
This commit is contained in:
Sebastian Dröge
parent
cd0726b037
commit
f27c2507c5
2 changed files with 283 additions and 190 deletions
|
|
@ -438,15 +438,20 @@ impl BaseSrcImpl for NdiAudioSrc {
|
|||
_offset: u64,
|
||||
_length: u32,
|
||||
) -> Result<gst::Buffer, gst::FlowError> {
|
||||
// FIXME: Make sure to not have any mutexes locked while wait
|
||||
self.capture(element)
|
||||
}
|
||||
}
|
||||
|
||||
impl NdiAudioSrc {
|
||||
fn capture(&self, element: &gst_base::BaseSrc) -> Result<gst::Buffer, gst::FlowError> {
|
||||
let settings = self.settings.lock().unwrap().clone();
|
||||
let mut state = self.state.lock().unwrap();
|
||||
let receivers = HASHMAP_RECEIVERS.lock().unwrap();
|
||||
|
||||
let receiver = &receivers.get(&state.id_receiver.unwrap()).unwrap();
|
||||
let recv = &receiver.ndi_instance;
|
||||
|
||||
let clock = element.get_clock().unwrap();
|
||||
let recv = {
|
||||
let state = self.state.lock().unwrap();
|
||||
let receivers = HASHMAP_RECEIVERS.lock().unwrap();
|
||||
let receiver = &receivers.get(&state.id_receiver.unwrap()).unwrap();
|
||||
receiver.ndi_instance.clone()
|
||||
};
|
||||
|
||||
let timeout = time::Instant::now();
|
||||
let audio_frame = loop {
|
||||
|
|
@ -478,6 +483,46 @@ impl BaseSrcImpl for NdiAudioSrc {
|
|||
break audio_frame;
|
||||
};
|
||||
|
||||
let pts = self.calculate_timestamp(element, &settings, &audio_frame);
|
||||
let info = self.create_audio_info(element, &audio_frame)?;
|
||||
|
||||
{
|
||||
let mut state = self.state.lock().unwrap();
|
||||
if state.info.as_ref() != Some(&info) {
|
||||
let caps = info.to_caps().unwrap();
|
||||
state.info = Some(info.clone());
|
||||
state.current_latency = gst::SECOND
|
||||
.mul_div_ceil(
|
||||
audio_frame.no_samples() as u64,
|
||||
audio_frame.sample_rate() as u64,
|
||||
)
|
||||
.unwrap_or(gst::CLOCK_TIME_NONE);
|
||||
drop(state);
|
||||
gst_debug!(self.cat, obj: element, "Configuring for caps {}", caps);
|
||||
element
|
||||
.set_caps(&caps)
|
||||
.map_err(|_| gst::FlowError::NotNegotiated)?;
|
||||
|
||||
let _ =
|
||||
element.post_message(&gst::Message::new_latency().src(Some(element)).build());
|
||||
}
|
||||
}
|
||||
|
||||
let buffer = self.create_buffer(element, pts, &info, &audio_frame)?;
|
||||
|
||||
gst_log!(self.cat, obj: element, "Produced buffer {:?}", buffer);
|
||||
|
||||
Ok(buffer)
|
||||
}
|
||||
|
||||
fn calculate_timestamp(
|
||||
&self,
|
||||
element: &gst_base::BaseSrc,
|
||||
settings: &Settings,
|
||||
audio_frame: &AudioFrame,
|
||||
) -> gst::ClockTime {
|
||||
let clock = element.get_clock().unwrap();
|
||||
|
||||
// For now take the current running time as PTS. At a later time we
|
||||
// will want to work with the timestamp given by the NDI SDK if available
|
||||
let now = clock.get_time();
|
||||
|
|
@ -530,34 +575,32 @@ impl BaseSrcImpl for NdiAudioSrc {
|
|||
pts
|
||||
);
|
||||
|
||||
let info = gst_audio::AudioInfo::new(
|
||||
pts
|
||||
}
|
||||
|
||||
fn create_audio_info(
|
||||
&self,
|
||||
_element: &gst_base::BaseSrc,
|
||||
audio_frame: &AudioFrame,
|
||||
) -> Result<gst_audio::AudioInfo, gst::FlowError> {
|
||||
let builder = gst_audio::AudioInfo::new(
|
||||
gst_audio::AUDIO_FORMAT_S16,
|
||||
audio_frame.sample_rate() as u32,
|
||||
audio_frame.no_channels() as u32,
|
||||
)
|
||||
.build()
|
||||
.unwrap();
|
||||
);
|
||||
|
||||
if state.info.as_ref() != Some(&info) {
|
||||
let caps = info.to_caps().unwrap();
|
||||
state.info = Some(info);
|
||||
state.current_latency = gst::SECOND
|
||||
.mul_div_ceil(
|
||||
audio_frame.no_samples() as u64,
|
||||
audio_frame.sample_rate() as u64,
|
||||
)
|
||||
.unwrap_or(gst::CLOCK_TIME_NONE);
|
||||
|
||||
gst_debug!(self.cat, obj: element, "Configuring for caps {}", caps);
|
||||
element
|
||||
.set_caps(&caps)
|
||||
.map_err(|_| gst::FlowError::NotNegotiated)?;
|
||||
|
||||
let _ = element.post_message(&gst::Message::new_latency().src(Some(element)).build());
|
||||
}
|
||||
Ok(builder.build().unwrap())
|
||||
}
|
||||
|
||||
fn create_buffer(
|
||||
&self,
|
||||
_element: &gst_base::BaseSrc,
|
||||
pts: gst::ClockTime,
|
||||
info: &gst_audio::AudioInfo,
|
||||
audio_frame: &AudioFrame,
|
||||
) -> Result<gst::Buffer, gst::FlowError> {
|
||||
// We multiply by 2 because is the size in bytes of an i16 variable
|
||||
let buff_size = (audio_frame.no_samples() * 2 * audio_frame.no_channels()) as usize;
|
||||
let buff_size = (audio_frame.no_samples() as u32 * info.bpf()) as usize;
|
||||
let mut buffer = gst::Buffer::with_size(buff_size).unwrap();
|
||||
{
|
||||
let duration = gst::SECOND
|
||||
|
|
@ -598,8 +641,6 @@ impl BaseSrcImpl for NdiAudioSrc {
|
|||
);
|
||||
}
|
||||
|
||||
gst_log!(self.cat, obj: element, "Produced buffer {:?}", buffer);
|
||||
|
||||
Ok(buffer)
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -484,15 +484,20 @@ impl BaseSrcImpl for NdiVideoSrc {
|
|||
_offset: u64,
|
||||
_length: u32,
|
||||
) -> Result<gst::Buffer, gst::FlowError> {
|
||||
// FIXME: Make sure to not have any mutexes locked while wait
|
||||
self.capture(element)
|
||||
}
|
||||
}
|
||||
|
||||
impl NdiVideoSrc {
|
||||
fn capture(&self, element: &gst_base::BaseSrc) -> Result<gst::Buffer, gst::FlowError> {
|
||||
let settings = self.settings.lock().unwrap().clone();
|
||||
let mut state = self.state.lock().unwrap();
|
||||
let receivers = HASHMAP_RECEIVERS.lock().unwrap();
|
||||
|
||||
let receiver = &receivers.get(&state.id_receiver.unwrap()).unwrap();
|
||||
let recv = &receiver.ndi_instance;
|
||||
|
||||
let clock = element.get_clock().unwrap();
|
||||
let recv = {
|
||||
let state = self.state.lock().unwrap();
|
||||
let receivers = HASHMAP_RECEIVERS.lock().unwrap();
|
||||
let receiver = &receivers.get(&state.id_receiver.unwrap()).unwrap();
|
||||
receiver.ndi_instance.clone()
|
||||
};
|
||||
|
||||
let timeout = time::Instant::now();
|
||||
let video_frame = loop {
|
||||
|
|
@ -524,6 +529,46 @@ impl BaseSrcImpl for NdiVideoSrc {
|
|||
break video_frame;
|
||||
};
|
||||
|
||||
let pts = self.calculate_timestamp(element, &settings, &video_frame);
|
||||
let info = self.create_video_info(element, &video_frame)?;
|
||||
|
||||
{
|
||||
let mut state = self.state.lock().unwrap();
|
||||
if state.info.as_ref() != Some(&info) {
|
||||
let caps = info.to_caps().unwrap();
|
||||
state.info = Some(info.clone());
|
||||
state.current_latency = gst::SECOND
|
||||
.mul_div_ceil(
|
||||
video_frame.frame_rate().1 as u64,
|
||||
video_frame.frame_rate().0 as u64,
|
||||
)
|
||||
.unwrap_or(gst::CLOCK_TIME_NONE);
|
||||
drop(state);
|
||||
gst_debug!(self.cat, obj: element, "Configuring for caps {}", caps);
|
||||
element
|
||||
.set_caps(&caps)
|
||||
.map_err(|_| gst::FlowError::NotNegotiated)?;
|
||||
|
||||
let _ =
|
||||
element.post_message(&gst::Message::new_latency().src(Some(element)).build());
|
||||
}
|
||||
}
|
||||
|
||||
let buffer = self.create_buffer(element, pts, &info, &video_frame)?;
|
||||
|
||||
gst_log!(self.cat, obj: element, "Produced buffer {:?}", buffer);
|
||||
|
||||
Ok(buffer)
|
||||
}
|
||||
|
||||
fn calculate_timestamp(
|
||||
&self,
|
||||
element: &gst_base::BaseSrc,
|
||||
settings: &Settings,
|
||||
video_frame: &VideoFrame,
|
||||
) -> gst::ClockTime {
|
||||
let clock = element.get_clock().unwrap();
|
||||
|
||||
// For now take the current running time as PTS. At a later time we
|
||||
// will want to work with the timestamp given by the NDI SDK if available
|
||||
let now = clock.get_time();
|
||||
|
|
@ -576,6 +621,14 @@ impl BaseSrcImpl for NdiVideoSrc {
|
|||
pts
|
||||
);
|
||||
|
||||
pts
|
||||
}
|
||||
|
||||
fn create_video_info(
|
||||
&self,
|
||||
_element: &gst_base::BaseSrc,
|
||||
video_frame: &VideoFrame,
|
||||
) -> Result<gst_video::VideoInfo, gst::FlowError> {
|
||||
// YV12 and I420 are swapped in the NDI SDK compared to GStreamer
|
||||
let format = match video_frame.fourcc() {
|
||||
ndisys::NDIlib_FourCC_type_e::NDIlib_FourCC_type_UYVY => gst_video::VideoFormat::Uyvy,
|
||||
|
|
@ -593,7 +646,7 @@ impl BaseSrcImpl for NdiVideoSrc {
|
|||
* gst::Fraction::new(video_frame.yres(), video_frame.xres());
|
||||
|
||||
#[cfg(feature = "interlaced-fields")]
|
||||
let info = {
|
||||
{
|
||||
let mut builder = gst_video::VideoInfo::new(
|
||||
format,
|
||||
video_frame.xres() as u32,
|
||||
|
|
@ -618,56 +671,52 @@ impl BaseSrcImpl for NdiVideoSrc {
|
|||
builder = builder.field_order(gst_video::VideoFieldOrder::TopFieldFirst);
|
||||
}
|
||||
|
||||
builder.build().unwrap()
|
||||
};
|
||||
|
||||
#[cfg(not(feature = "interlaced-fields"))]
|
||||
let info = if video_frame.frame_format_type()
|
||||
!= ndisys::NDIlib_frame_format_type_e::NDIlib_frame_format_type_progressive
|
||||
&& video_frame.frame_format_type()
|
||||
!= ndisys::NDIlib_frame_format_type_e::NDIlib_frame_format_type_interleaved
|
||||
{
|
||||
gst_element_error!(
|
||||
element,
|
||||
gst::StreamError::Format,
|
||||
["Separate field interlacing not supported"]
|
||||
);
|
||||
return Err(gst::FlowError::NotNegotiated);
|
||||
} else {
|
||||
gst_video::VideoInfo::new(format, video_frame.xres() as u32, video_frame.yres() as u32)
|
||||
.fps(gst::Fraction::from(video_frame.frame_rate()))
|
||||
.par(par)
|
||||
.interlace_mode(
|
||||
if video_frame.frame_format_type()
|
||||
== ndisys::NDIlib_frame_format_type_e::NDIlib_frame_format_type_progressive
|
||||
{
|
||||
gst_video::VideoInterlaceMode::Progressive
|
||||
} else {
|
||||
gst_video::VideoInterlaceMode::Interleaved
|
||||
},
|
||||
)
|
||||
.build()
|
||||
.unwrap()
|
||||
};
|
||||
|
||||
if state.info.as_ref() != Some(&info) {
|
||||
let caps = info.to_caps().unwrap();
|
||||
state.info = Some(info);
|
||||
state.current_latency = gst::SECOND
|
||||
.mul_div_ceil(
|
||||
video_frame.frame_rate().1 as u64,
|
||||
video_frame.frame_rate().0 as u64,
|
||||
)
|
||||
.unwrap_or(gst::CLOCK_TIME_NONE);
|
||||
gst_debug!(self.cat, obj: element, "Configuring for caps {}", caps);
|
||||
element
|
||||
.set_caps(&caps)
|
||||
.map_err(|_| gst::FlowError::NotNegotiated)?;
|
||||
|
||||
let _ = element.post_message(&gst::Message::new_latency().src(Some(element)).build());
|
||||
Ok(builder.build().unwrap())
|
||||
}
|
||||
|
||||
let mut buffer = gst::Buffer::with_size(state.info.as_ref().unwrap().size()).unwrap();
|
||||
#[cfg(not(feature = "interlaced-fields"))]
|
||||
{
|
||||
if video_frame.frame_format_type()
|
||||
!= ndisys::NDIlib_frame_format_type_e::NDIlib_frame_format_type_progressive
|
||||
&& video_frame.frame_format_type()
|
||||
!= ndisys::NDIlib_frame_format_type_e::NDIlib_frame_format_type_interleaved
|
||||
{
|
||||
gst_element_error!(
|
||||
element,
|
||||
gst::StreamError::Format,
|
||||
["Separate field interlacing not supported"]
|
||||
);
|
||||
return Err(gst::FlowError::NotNegotiated);
|
||||
}
|
||||
|
||||
let builder = gst_video::VideoInfo::new(
|
||||
format,
|
||||
video_frame.xres() as u32,
|
||||
video_frame.yres() as u32,
|
||||
)
|
||||
.fps(gst::Fraction::from(video_frame.frame_rate()))
|
||||
.par(par)
|
||||
.interlace_mode(
|
||||
if video_frame.frame_format_type()
|
||||
== ndisys::NDIlib_frame_format_type_e::NDIlib_frame_format_type_progressive
|
||||
{
|
||||
gst_video::VideoInterlaceMode::Progressive
|
||||
} else {
|
||||
gst_video::VideoInterlaceMode::Interleaved
|
||||
},
|
||||
);
|
||||
Ok(builder.build().unwrap());
|
||||
}
|
||||
}
|
||||
|
||||
fn create_buffer(
|
||||
&self,
|
||||
element: &gst_base::BaseSrc,
|
||||
pts: gst::ClockTime,
|
||||
info: &gst_video::VideoInfo,
|
||||
video_frame: &VideoFrame,
|
||||
) -> Result<gst::Buffer, gst::FlowError> {
|
||||
let mut buffer = gst::Buffer::with_size(info.size()).unwrap();
|
||||
{
|
||||
let duration = gst::SECOND
|
||||
.mul_div_floor(
|
||||
|
|
@ -734,22 +783,47 @@ impl BaseSrcImpl for NdiVideoSrc {
|
|||
}
|
||||
}
|
||||
|
||||
let buffer = {
|
||||
let mut vframe =
|
||||
gst_video::VideoFrame::from_buffer_writable(buffer, &state.info.as_ref().unwrap())
|
||||
.unwrap();
|
||||
self.copy_frame(element, info, buffer, video_frame)
|
||||
}
|
||||
|
||||
match format {
|
||||
gst_video::VideoFormat::Uyvy
|
||||
| gst_video::VideoFormat::Bgra
|
||||
| gst_video::VideoFormat::Bgrx
|
||||
| gst_video::VideoFormat::Rgba
|
||||
| gst_video::VideoFormat::Rgbx => {
|
||||
let line_bytes = if format == gst_video::VideoFormat::Uyvy {
|
||||
2 * vframe.width() as usize
|
||||
} else {
|
||||
4 * vframe.width() as usize
|
||||
};
|
||||
fn copy_frame(
|
||||
&self,
|
||||
_element: &gst_base::BaseSrc,
|
||||
info: &gst_video::VideoInfo,
|
||||
buffer: gst::Buffer,
|
||||
video_frame: &VideoFrame,
|
||||
) -> Result<gst::Buffer, gst::FlowError> {
|
||||
// FIXME: Error handling if frame dimensions don't match
|
||||
let mut vframe = gst_video::VideoFrame::from_buffer_writable(buffer, info).unwrap();
|
||||
|
||||
match info.format() {
|
||||
gst_video::VideoFormat::Uyvy
|
||||
| gst_video::VideoFormat::Bgra
|
||||
| gst_video::VideoFormat::Bgrx
|
||||
| gst_video::VideoFormat::Rgba
|
||||
| gst_video::VideoFormat::Rgbx => {
|
||||
let line_bytes = if info.format() == gst_video::VideoFormat::Uyvy {
|
||||
2 * vframe.width() as usize
|
||||
} else {
|
||||
4 * vframe.width() as usize
|
||||
};
|
||||
let dest_stride = vframe.plane_stride()[0] as usize;
|
||||
let dest = vframe.plane_data_mut(0).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src = video_frame.data();
|
||||
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride))
|
||||
{
|
||||
dest.copy_from_slice(src);
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
gst_video::VideoFormat::Nv12 => {
|
||||
// First plane
|
||||
{
|
||||
let line_bytes = vframe.width() as usize;
|
||||
let dest_stride = vframe.plane_stride()[0] as usize;
|
||||
let dest = vframe.plane_data_mut(0).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
|
|
@ -759,104 +833,82 @@ impl BaseSrcImpl for NdiVideoSrc {
|
|||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride))
|
||||
{
|
||||
dest.copy_from_slice(src);
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
gst_video::VideoFormat::Nv12 => {
|
||||
// First plane
|
||||
|
||||
// Second plane
|
||||
{
|
||||
let line_bytes = vframe.width() as usize;
|
||||
let dest_stride = vframe.plane_stride()[1] as usize;
|
||||
let dest = vframe.plane_data_mut(1).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src = &video_frame.data()[(video_frame.yres() as usize * src_stride)..];
|
||||
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride))
|
||||
{
|
||||
let line_bytes = vframe.width() as usize;
|
||||
let dest_stride = vframe.plane_stride()[0] as usize;
|
||||
let dest = vframe.plane_data_mut(0).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src = video_frame.data();
|
||||
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride))
|
||||
{
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
|
||||
// Second plane
|
||||
{
|
||||
let line_bytes = vframe.width() as usize;
|
||||
let dest_stride = vframe.plane_stride()[1] as usize;
|
||||
let dest = vframe.plane_data_mut(1).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src = &video_frame.data()[(video_frame.yres() as usize * src_stride)..];
|
||||
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride))
|
||||
{
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
gst_video::VideoFormat::Yv12 | gst_video::VideoFormat::I420 => {
|
||||
// First plane
|
||||
{
|
||||
let line_bytes = vframe.width() as usize;
|
||||
let dest_stride = vframe.plane_stride()[0] as usize;
|
||||
let dest = vframe.plane_data_mut(0).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src = video_frame.data();
|
||||
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride))
|
||||
{
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
|
||||
// Second plane
|
||||
{
|
||||
let line_bytes = (vframe.width() as usize + 1) / 2;
|
||||
let dest_stride = vframe.plane_stride()[1] as usize;
|
||||
let dest = vframe.plane_data_mut(1).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src_stride1 = video_frame.line_stride_in_bytes() as usize / 2;
|
||||
let src = &video_frame.data()[(video_frame.yres() as usize * src_stride)..];
|
||||
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride1))
|
||||
{
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
|
||||
// Third plane
|
||||
{
|
||||
let line_bytes = (vframe.width() as usize + 1) / 2;
|
||||
let dest_stride = vframe.plane_stride()[2] as usize;
|
||||
let dest = vframe.plane_data_mut(2).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src_stride1 = video_frame.line_stride_in_bytes() as usize / 2;
|
||||
let src = &video_frame.data()[(video_frame.yres() as usize * src_stride
|
||||
+ (video_frame.yres() as usize + 1) / 2 * src_stride1)..];
|
||||
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride1))
|
||||
{
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
}
|
||||
_ => unreachable!(),
|
||||
}
|
||||
gst_video::VideoFormat::Yv12 | gst_video::VideoFormat::I420 => {
|
||||
// First plane
|
||||
{
|
||||
let line_bytes = vframe.width() as usize;
|
||||
let dest_stride = vframe.plane_stride()[0] as usize;
|
||||
let dest = vframe.plane_data_mut(0).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src = video_frame.data();
|
||||
|
||||
vframe.into_buffer()
|
||||
};
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride))
|
||||
{
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
|
||||
gst_log!(self.cat, obj: element, "Produced buffer {:?}", buffer);
|
||||
// Second plane
|
||||
{
|
||||
let line_bytes = (vframe.width() as usize + 1) / 2;
|
||||
let dest_stride = vframe.plane_stride()[1] as usize;
|
||||
let dest = vframe.plane_data_mut(1).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src_stride1 = video_frame.line_stride_in_bytes() as usize / 2;
|
||||
let src = &video_frame.data()[(video_frame.yres() as usize * src_stride)..];
|
||||
|
||||
Ok(buffer)
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride1))
|
||||
{
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
|
||||
// Third plane
|
||||
{
|
||||
let line_bytes = (vframe.width() as usize + 1) / 2;
|
||||
let dest_stride = vframe.plane_stride()[2] as usize;
|
||||
let dest = vframe.plane_data_mut(2).unwrap();
|
||||
let src_stride = video_frame.line_stride_in_bytes() as usize;
|
||||
let src_stride1 = video_frame.line_stride_in_bytes() as usize / 2;
|
||||
let src = &video_frame.data()[(video_frame.yres() as usize * src_stride
|
||||
+ (video_frame.yres() as usize + 1) / 2 * src_stride1)..];
|
||||
|
||||
for (dest, src) in dest
|
||||
.chunks_exact_mut(dest_stride)
|
||||
.zip(src.chunks_exact(src_stride1))
|
||||
{
|
||||
dest.copy_from_slice(&src[..line_bytes]);
|
||||
}
|
||||
}
|
||||
}
|
||||
_ => unreachable!(),
|
||||
}
|
||||
|
||||
Ok(vframe.into_buffer())
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue