fix oss audio playback, broken since r7983, pass AVFormatContext filename to audio_open since audio_device when NULL is no more set to default value

Originally committed as revision 8851 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8850 to svn://svn.ffmpeg.org/ffmpeg/trunk

This allows building shared libraries on AMD64 again.
based on a patch by Diego 'Flameeyes' Pettenò and suggestions by Michael
original thread:
Date: Wed, 18 Apr 2007 11:26:12 +0200
Subject: [Ffmpeg-devel] [PATCH] (try 2) Build shared libraries on AMD64 again

Originally committed as revision 8849 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8848 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8847 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8846 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8845 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8844 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8843 to svn://svn.ffmpeg.org/ffmpeg/trunk

related parts (rtp,rtsp,sdp). Currently they are interdependent.

Originally committed as revision 8842 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8841 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8840 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23147 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 8839 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8838 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8837 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8836 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8835 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8834 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8833 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8832 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8831 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8830 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 23140 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Originally committed as revision 8829 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8828 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8827 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Marc Hoffman, mmh pleasantst com

Originally committed as revision 23117 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

Such commit introduced some regressions (see the "Possible bug in reading
PTS/DTS" and "[BUG] no video transcoding" threads on ffmpeg-devel).

Originally committed as revision 8826 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8825 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8824 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Ramiro Polla ramiro lisha ufsc br

Originally committed as revision 8823 to svn://svn.ffmpeg.org/ffmpeg/trunk

patch by Ramiro Polla ramiro lisha ufsc br

Originally committed as revision 8822 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8821 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8820 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8819 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8818 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8817 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8816 to svn://svn.ffmpeg.org/ffmpeg/trunk

Originally committed as revision 8815 to svn://svn.ffmpeg.org/ffmpeg/trunk