pub struct Context { /* private fields */ }
Implementations§
source§impl Context
impl Context
pub unsafe fn as_ptr(&self) -> *const SwsContext
pub unsafe fn as_mut_ptr(&mut self) -> *mut SwsContext
source§impl Context
impl Context
sourcepub fn get(
src_format: Pixel,
src_w: u32,
src_h: u32,
dst_format: Pixel,
dst_w: u32,
dst_h: u32,
flags: Flags
) -> Result<Self, Error>
pub fn get( src_format: Pixel, src_w: u32, src_h: u32, dst_format: Pixel, dst_w: u32, dst_h: u32, flags: Flags ) -> Result<Self, Error>
Examples found in repository?
examples/dump-frames.rs (lines 24-32)
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fn main() -> Result<(), ffmpeg::Error> {
ffmpeg::init().unwrap();
if let Ok(mut ictx) = input(&env::args().nth(1).expect("Cannot open file.")) {
let input = ictx
.streams()
.best(Type::Video)
.ok_or(ffmpeg::Error::StreamNotFound)?;
let video_stream_index = input.index();
let context_decoder = ffmpeg::codec::context::Context::from_parameters(input.parameters())?;
let mut decoder = context_decoder.decoder().video()?;
let mut scaler = Context::get(
decoder.format(),
decoder.width(),
decoder.height(),
Pixel::RGB24,
decoder.width(),
decoder.height(),
Flags::BILINEAR,
)?;
let mut frame_index = 0;
let mut receive_and_process_decoded_frames =
|decoder: &mut ffmpeg::decoder::Video| -> Result<(), ffmpeg::Error> {
let mut decoded = Video::empty();
while decoder.receive_frame(&mut decoded).is_ok() {
let mut rgb_frame = Video::empty();
scaler.run(&decoded, &mut rgb_frame)?;
save_file(&rgb_frame, frame_index).unwrap();
frame_index += 1;
}
Ok(())
};
for (stream, packet) in ictx.packets() {
if stream.index() == video_stream_index {
decoder.send_packet(&packet)?;
receive_and_process_decoded_frames(&mut decoder)?;
}
}
decoder.send_eof()?;
receive_and_process_decoded_frames(&mut decoder)?;
}
Ok(())
}
pub fn cached( &mut self, src_format: Pixel, src_w: u32, src_h: u32, dst_format: Pixel, dst_w: u32, dst_h: u32, flags: Flags )
pub fn input(&self) -> &Definition
pub fn output(&self) -> &Definition
sourcepub fn run(&mut self, input: &Video, output: &mut Video) -> Result<(), Error>
pub fn run(&mut self, input: &Video, output: &mut Video) -> Result<(), Error>
Examples found in repository?
examples/dump-frames.rs (line 41)
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fn main() -> Result<(), ffmpeg::Error> {
ffmpeg::init().unwrap();
if let Ok(mut ictx) = input(&env::args().nth(1).expect("Cannot open file.")) {
let input = ictx
.streams()
.best(Type::Video)
.ok_or(ffmpeg::Error::StreamNotFound)?;
let video_stream_index = input.index();
let context_decoder = ffmpeg::codec::context::Context::from_parameters(input.parameters())?;
let mut decoder = context_decoder.decoder().video()?;
let mut scaler = Context::get(
decoder.format(),
decoder.width(),
decoder.height(),
Pixel::RGB24,
decoder.width(),
decoder.height(),
Flags::BILINEAR,
)?;
let mut frame_index = 0;
let mut receive_and_process_decoded_frames =
|decoder: &mut ffmpeg::decoder::Video| -> Result<(), ffmpeg::Error> {
let mut decoded = Video::empty();
while decoder.receive_frame(&mut decoded).is_ok() {
let mut rgb_frame = Video::empty();
scaler.run(&decoded, &mut rgb_frame)?;
save_file(&rgb_frame, frame_index).unwrap();
frame_index += 1;
}
Ok(())
};
for (stream, packet) in ictx.packets() {
if stream.index() == video_stream_index {
decoder.send_packet(&packet)?;
receive_and_process_decoded_frames(&mut decoder)?;
}
}
decoder.send_eof()?;
receive_and_process_decoded_frames(&mut decoder)?;
}
Ok(())
}