[Mlt-devel] [mltframework/mlt] 745547: Add filter_swresample. (#305)

[GitHub <no...@gi...>]

  Branch: refs/heads/master
  Home:   https://github.com/mltframework/mlt
  Commit: 7455472f47bc6a1ae38bf6260d1522070e08998f
      https://github.com/mltframework/mlt/commit/7455472f47bc6a1ae38bf6260d1522070e08998f
  Author: Brian Matherly <co...@br...>
  Date:   2018-03-12 (Mon, 12 Mar 2018)

  Changed paths:
    M src/framework/mlt.vers
    M src/framework/mlt_consumer.c
    M src/framework/mlt_consumer.h
    M src/framework/mlt_frame.c
    M src/framework/mlt_frame.h
    M src/framework/mlt_tractor.c
    M src/framework/mlt_transition.c
    M src/framework/mlt_types.h
    M src/modules/avformat/Makefile
    A src/modules/avformat/common.c
    A src/modules/avformat/common.h
    M src/modules/avformat/configure
    M src/modules/avformat/consumer_avformat.c
    M src/modules/avformat/factory.c
    M src/modules/avformat/filter_avfilter.c
    A src/modules/avformat/filter_swresample.c
    M src/modules/avformat/producer_avformat.c
    M src/modules/core/loader.ini

  Log Message:
  -----------
  Add filter_swresample. (#305)

* Add filter_swresample.

Performs channel configuration aware channel count conversion.
Also performs sample format and frequency conversion.
Set this filter as the default channelconvert normalize filter.

* Resolve review comments for filter_swresample.

* Fix applying channel_layout property.

MLT allows specifying channel_layout as a string representing the
channel layout. But avcodec expects channel_layout to be specified
as an integer which represents a channel position bitmap. This change
stops the channel_layout property from being passed to avcodec so that
the value calculated by MLT will be used instead.