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Add a benchmark using iai, that we can run in CI
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use mpeg2ts_reader::packet_filter_switch; | ||
use mpeg2ts_reader::demux_context; | ||
use mpeg2ts_reader::demultiplex; | ||
use mpeg2ts_reader::pes; | ||
use mpeg2ts_reader::psi; | ||
use std::fs::File; | ||
use std::io::Read; | ||
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packet_filter_switch! { | ||
NullFilterSwitch<NullDemuxContext> { | ||
Pat: demultiplex::PatPacketFilter<NullDemuxContext>, | ||
Pmt: demultiplex::PmtPacketFilter<NullDemuxContext>, | ||
Null: demultiplex::NullPacketFilter<NullDemuxContext>, | ||
NullPes: pes::PesPacketFilter<NullDemuxContext,NullElementaryStreamConsumer>, | ||
} | ||
} | ||
demux_context!(NullDemuxContext, NullFilterSwitch); | ||
impl NullDemuxContext { | ||
fn do_construct(&mut self, req: demultiplex::FilterRequest<'_, '_>) -> NullFilterSwitch { | ||
match req { | ||
demultiplex::FilterRequest::ByPid(psi::pat::PAT_PID) => { | ||
NullFilterSwitch::Pat(demultiplex::PatPacketFilter::default()) | ||
} | ||
demultiplex::FilterRequest::ByPid(_) => { | ||
NullFilterSwitch::Null(demultiplex::NullPacketFilter::default()) | ||
} | ||
demultiplex::FilterRequest::ByStream { | ||
pmt, stream_info, .. | ||
} => NullElementaryStreamConsumer::construct(pmt, stream_info), | ||
demultiplex::FilterRequest::Pmt { | ||
pid, | ||
program_number, | ||
} => NullFilterSwitch::Pmt(demultiplex::PmtPacketFilter::new(pid, program_number)), | ||
demultiplex::FilterRequest::Nit { .. } => { | ||
NullFilterSwitch::Null(demultiplex::NullPacketFilter::default()) | ||
} | ||
} | ||
} | ||
} | ||
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pub struct NullElementaryStreamConsumer {} | ||
impl NullElementaryStreamConsumer { | ||
fn construct( | ||
_pmt_sect: &psi::pmt::PmtSection, | ||
stream_info: &psi::pmt::StreamInfo, | ||
) -> NullFilterSwitch { | ||
println!("stream info: {:?}", stream_info); | ||
let filter = pes::PesPacketFilter::new(NullElementaryStreamConsumer {}); | ||
NullFilterSwitch::NullPes(filter) | ||
} | ||
} | ||
impl<Ctx> pes::ElementaryStreamConsumer<Ctx> for NullElementaryStreamConsumer { | ||
fn start_stream(&mut self, _ctx: &mut Ctx) {} | ||
fn begin_packet(&mut self, _ctx: &mut Ctx, header: pes::PesHeader) { | ||
if let pes::PesContents::Parsed(Some(content)) = header.contents() { | ||
match content.pts_dts() { | ||
Ok(pes::PtsDts::PtsOnly(Ok(ts))) => { | ||
criterion::black_box(ts); | ||
} | ||
Ok(pes::PtsDts::Both { pts: Ok(ts), .. }) => { | ||
criterion::black_box(ts); | ||
} | ||
_ => (), | ||
}; | ||
} | ||
} | ||
fn continue_packet(&mut self, _ctx: &mut Ctx, _data: &[u8]) {} | ||
fn end_packet(&mut self, _ctx: &mut Ctx) {} | ||
fn continuity_error(&mut self, _ctx: &mut Ctx) {} | ||
} | ||
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fn mpeg2ts_reader() { | ||
let mut f = File::open("586000000.ts") | ||
.expect("Test file missing"); | ||
let l = f.metadata().unwrap().len() as usize; | ||
let size = l.min(188 * 200_000); | ||
let mut buf = vec![0; size]; | ||
f.read(&mut buf[..]).unwrap(); | ||
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let mut ctx = NullDemuxContext::new(); | ||
let mut demux = demultiplex::Demultiplex::new(&mut ctx); | ||
demux.push(&mut ctx, &buf[..]); | ||
} | ||
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iai::main!( | ||
mpeg2ts_reader, | ||
); |