Support the URL_FLAG_NONBLOCK semantic and uniform the protocol.
The quick retry loop is already part of retry_transfer_wrapper.

The polling routine is common to the network protocols:
udp, tcp and, once merged, sctp.

Fix the breakage introduced with 9073ca6c

The replacement isn't ready yet.

Signed-off-by: NJanne Grunau <janne-libav@jannau.net>

Fixes build with --disable-muxers --disable-network.

Thanks to Hendrik Leppkes for noticing.

thread_count passed to ff_thread_init() is only used to set AVCodecContext.
thread_count, and can be removed. Instead move it to the legacy implementation
of avcodec_thread_init().

This also fixes the problem that calling avcodec_thread_init() with pthreads
enabled did not set it since ff1efc52.
Signed-off-by: NJanne Grunau <janne-libav@jannau.net>

This reverts commit 36864ac3 since it
breaks LATM decoding in ffplay.

Signed-off-by: NAnton Khirnov <anton@khirnov.net>

Signed-off-by: NAnton Khirnov <anton@khirnov.net>

It's not used anywhere internally.

Salvage its documentation for ffio_read_seek.

It's not used anywhere internally.

Salvage its documentation for ffio_read_pause.

Signed-off-by: NMans Rullgard <mans@mansr.com>

Signed-off-by: NMans Rullgard <mans@mansr.com>

URLContext.filename should be used directly.

URLContext.max_packet_size should be used directly.

The previous commit didn't do this straight away, to keep the
diff slightly simpler.

This avoids issues where EOF at the end of the segment is given
the variant demuxer. Now the demuxers only see one single data
stream (as when using the applehttp protocol handler).

This is a preparation for a restructuring of the demuxer, to
minimize the later diff.

Signed-off-by: NJanne Grunau <janne-libav@jannau.net>

The unbuffered API will be made private and it's not used anywhere
internally.

They're unimplemented and nobody cared to do anything with that for
10 years.

full-bandwidth channels.

This reduces high-frequency artifacts and improves the quality of the lower
frequency audio at low bit rates.

fixes Issue 2674