Frame format

[gavv]

• [x] Rework audio::Frame:

  • [x] rename samples() + num_samples() to raw_samples() + num_raw_samples()
  • [x] add bytes() + num_bytes()
  • [x] bytes are always present
  • [x] raw samples may be NULL
  • [x] there is a flag indicating if raw samples are present
  • [x] raw_samples() and num_raw_samples() should panic if called on frame without that flag
  • [x] add duration() and set_duration()
  • [x] duration may be set even if raw_samples() are NULL

• [x] Add SampleFormat enum

• [x] Extend SampleSpec

  • [x] add SampleFormat and PcmFormat fields to SampleSpec
  • [x] add SampleSpec.is_raw() method (returns true if SampleFormat is interleaved PCM with 32-bit native-endian floats, i.e. samples are in "raw" format and raw_samples() is available)
  • [x] add converters between byte size and timestamps (STS and ns)

• [x] Update pipeline components

  • [x] find components that don't really need raw samples and port them to duration()
  • [x] find all components that use Frame::raw_samples(); add a panic to their constructors that SampleSpec::is_raw() is true (to catch bugs with pipeline configuration earlier)
  • [x] remove pcm_format from rtp::Encoding; use PCM format from SampleSpec instead (rtp::Encoding already contains SampleSpec)

• [x] Update printer

  • [x] Frame::print() should include flags and duration

• [x] PCM mapping

  • [x] implement PcmMapperReader (frame reader, maps frames between PCM formats using PcmMapper)
  • [x] implement PcmMapperWriter (frame writer, maps frames between PCM formats using PcmMapper)
  • [x] add PcmMapperReader to receiver pipeline (converts frames from raw format to receiver output format)
  • [x] add PcmMapperWriter to sender pipeline (converts frames from sender input format to raw format)

[dshil]

I'm start wokring on it. FYI @gavv

[dshil]

Unassiged from my self.

[gavv]

Landed.