It will be useful in the upcoming transition to refcounted AVFrames.

Also update some common misspelled words in patcheck
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This is required to fulfill avcodec_decode_video2() promise to return
the number of consumed bytes on success.

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: Janne Grunau <janne-libav@jannau.net>

avcodec_thread_init currently doesn't do anything at all with pthreads enabled.

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

As a side effect of the last commit, avcodec_open() now calls it automatically,
so there is no longer any need for clients to call it.
Instead they should set AVCodecContext.thread_count.

avcodec_thread_free() is deprecated, and will be removed from avcodec.h at the
next MAJOR libavcodec bump.

Rename the functions to ff_thread_init/free, since they are now internal.
Wrappers are provided to maintain API compatibility.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
(cherry picked from commit c0b102ca)

See doc/multithreading.txt for details on use in codecs.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

As a side effect of the last commit, avcodec_open() now calls it automatically,
so there is no longer any need for clients to call it.
Instead they should set AVCodecContext.thread_count.

avcodec_thread_free() is deprecated, and will be removed from avcodec.h at the
next MAJOR libavcodec bump.

Rename the functions to ff_thread_init/free, since they are now internal.
Wrappers are provided to maintain API compatibility.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

See doc/multithreading.txt for details on use in codecs.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>