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dedupe code for receiving and writing packets

This commit is contained in:
Vivian Lim 2021-04-24 02:18:06 -07:00
parent d660a9cc94
commit 7920d944d4
1 changed files with 44 additions and 22 deletions
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66
examples/ffmpeg_recorder.rs
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@ -107,6 +107,7 @@ fn audio_filter(
.capabilities()
.contains(ffmpeg::codec::capabilities::Capabilities::VARIABLE_FRAME_SIZE)
{
eprintln!("setting constant frame size {}", audio_encoder.frame_size());
afilter
.get("out")
.unwrap()
@ -136,7 +137,9 @@ impl MyEmulator {
let fps_int = if fps_int == 0 { 60 } else { fps_int };
let detected_vcodec = octx.format().codec(&video_path, media::Type::Video);
let detected_acodec = octx.format().codec(&video_path, media::Type::Audio);
//let detected_acodec = octx.format().codec(&video_path, media::Type::Audio);
let wavname = Path::new("out.wav");
let detected_acodec = octx.format().codec(&wavname, media::Type::Audio);
let vcodec = ffmpeg::encoder::find(detected_vcodec).unwrap().video().unwrap();
let acodec = ffmpeg::encoder::find(detected_acodec).unwrap().audio().unwrap();
@ -186,8 +189,9 @@ static bool ffmpeg_init_config(struct ff_config_param *params,
*/
audio_encoder.set_bit_rate(64000);
audio_encoder.set_rate(44100);
audio_encoder.set_bit_rate(640000);
//audio_encoder.set_rate(44100);
audio_encoder.set_rate(av_info.timing.sample_rate.round() as i32);
audio_encoder.set_format(audio_encoder.codec().unwrap().audio().unwrap().formats().unwrap().nth(0).unwrap());
audio_encoder.set_channels(2);
audio_encoder.set_channel_layout(ChannelLayout::STEREO);
@ -197,10 +201,11 @@ static bool ffmpeg_init_config(struct ff_config_param *params,
let mut audio_encoder = audio_encoder.open_as(acodec).unwrap();
let audio_filter = audio_filter(&audio_encoder, av_info.timing.sample_rate).unwrap();
audio_encoder.set_rate(av_info.timing.sample_rate.round() as i32);
//audio_encoder.set_rate(av_info.timing.sample_rate.round() as i32);
audio_output.set_parameters(&audio_encoder);
octx.write_header().unwrap();
ffmpeg::format::context::output::dump(&octx, 0, None);
let emu = MyEmulator {
retro,
@ -225,6 +230,25 @@ static bool ffmpeg_init_config(struct ff_config_param *params,
pin_emu.set_system_av_info(av_info);
pin_emu
}
fn receive_and_write_packets(&mut self, encoder: EncoderToWriteFrom)
{
let stream_index = match encoder {
EncoderToWriteFrom::Video => 0,
EncoderToWriteFrom::Audio => 1,
};
let mut encoded_packet = ffmpeg::Packet::empty();
while let Ok(..) = match encoder {
EncoderToWriteFrom::Video => self.video_encoder.receive_packet(&mut encoded_packet),
EncoderToWriteFrom::Audio => self.audio_encoder.receive_packet(&mut encoded_packet),
} {
if encoded_packet.size() > 0 {
encoded_packet.set_stream(stream_index);
eprintln!("pk pts {:?} dts {:?}", encoded_packet.pts(), encoded_packet.dts());
encoded_packet.write_interleaved(&mut self.octx).unwrap(); // AAA
}
}
}
pub fn run(&mut self, frame: i64) {
self.frame += 1;
@ -241,18 +265,9 @@ static bool ffmpeg_init_config(struct ff_config_param *params,
filtered_vframe.set_pts(Some(frame));
self.video_encoder.send_frame(&filtered_vframe).unwrap();
let mut encoded_packet = ffmpeg::Packet::empty();
while let Ok(..) = self.video_encoder.receive_packet(&mut encoded_packet) {
if encoded_packet.size() > 0 {
encoded_packet.set_stream(0); // use stream index...
//encoded_packet.rescale_ts(Rational(1, 1), Rational(1, 60));
encoded_packet.write_interleaved(&mut self.octx).unwrap(); // AAA
}
//encoded_packet.write_interleaved(&mut self.octx).unwrap(); // AAA
}
self.receive_and_write_packets(EncoderToWriteFrom::Video);
}
eprintln!("Audio buffer length {}", self.audio_buf.len());
let mut aframe = frame::Audio::new(
format::Sample::I16(format::sample::Type::Packed),
@ -261,8 +276,8 @@ static bool ffmpeg_init_config(struct ff_config_param *params,
);
aframe.set_channels(2);
aframe.set_rate(32040);
aframe.set_pts(Some(frame));
let aplane: &mut [(i16, i16)] = aframe.plane_mut(0);
eprintln!("Audio buffer length {} -> {}", self.audio_buf.len(), aplane.len());
aplane.copy_from_slice(self.audio_buf.as_ref());
//eprintln!("src: {:?}, dest: {:?}", self.audio_buf, aplane);
self.audio_buf.clear();
@ -274,17 +289,15 @@ static bool ffmpeg_init_config(struct ff_config_param *params,
if self.audio_filter.get("in").unwrap().source().failed_requests() > 0 {
println!("🎥 failed to put filter input frame");
}
//let faplane: &[f32] = filtered_aframe.plane(0);
//eprintln!("filtered: {:?}", faplane);
filtered_aframe.set_pts(Some(frame));
eprintln!("f pts {:?}", filtered_aframe.pts());
filtered_aframe.set_pts(Some(frame));
self.audio_encoder.send_frame(&aframe).unwrap();
let mut encoded_packet = ffmpeg::Packet::empty();
while let Ok(..) = self.audio_encoder.receive_packet(&mut encoded_packet) {
if encoded_packet.size() > 0 {
encoded_packet.set_stream(1);
//encoded_packet.rescale_ts(Rational(1, 1), Rational(1, 60));
encoded_packet.write_interleaved(&mut self.octx).unwrap(); // AAA
}
}
self.receive_and_write_packets(EncoderToWriteFrom::Audio);
}
}
@ -306,6 +319,10 @@ static bool ffmpeg_init_config(struct ff_config_param *params,
}
pub fn end(&mut self) {
self.video_encoder.send_eof().unwrap();
self.receive_and_write_packets(EncoderToWriteFrom::Video);
self.audio_encoder.send_eof().unwrap();
self.receive_and_write_packets(EncoderToWriteFrom::Audio);
self.octx.write_trailer().unwrap();
}
}
@ -458,3 +475,8 @@ fn main() -> Fallible<()> {
//octx.write_trailer().unwrap();
Ok(())
}
enum EncoderToWriteFrom {
Video,
Audio,
}