Kieran/ffmpeg-the-third
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examples/avi-to-ppm: reimplement with modern API

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Avoid decoder.decode.
This commit is contained in:
Zhiming Wang 2020-08-08 00:57:44 +08:00
parent e1cabad5c9
commit 93b7f58ebc
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GPG Key ID: 5B58F95EC95965D8
1 changed files with 16 additions and 15 deletions
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31
examples/avi-to-ppm.rs
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@ -31,26 +31,27 @@ fn main() -> Result<(), ffmpeg::Error> {
)?;
let mut frame_index = 0;
for (stream, packet) in ictx.packets() {
if stream.index() != video_stream_index {
continue;
}
let mut frame = Video::empty();
match decoder.decode(&packet, &mut frame) {
Ok(_) => {
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(&frame, &mut rgb_frame)?;
match save_file(&rgb_frame, frame_index) {
Ok(_) => {}
Err(e) => println!("Error occurred during file writing - {}", e),
}
scaler.run(&decoded, &mut rgb_frame)?;
save_file(&rgb_frame, frame_index).unwrap();
frame_index += 1;
}
_ => {
println!("Error occurred while decoding packet.");
}
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(())