rtmpproto: Track last received timestamp

Some RTMP commands need the most recent timestamp as their parameter, so
keep track of it. This must be the most recent one and not e.g. the max
received timestamp as it can decrease again through seeking.

Signed-off-by: Martin Storsjö <martin@martin.st>
rtmpproto: Add pause support

Signed-off-by: Martin Storsjö <martin@martin.st>
ffplay: remove delays when paused from video and subtitle thread

Once the frame queue is full, we will wait anyway.

Signed-off-by: Marton Balint <cus@passwd.hu>
ffplay: remove manual bug option handling code

It is supported as a codec option, and those are already parsed.

Signed-off-by: Marton Balint <cus@passwd.hu>
ffplay: update documentation

Reviewed-by: Lou Logan <lou@lrcd.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
libavutil: Add CAST128 symmetric block cipher

Only ECB mode is supported at the moment

Signed-off-by: Supraja Meedinti <supraja0493@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
configure: add pkg-config support for libx264

Reviewed-by: Carl Eugen Hoyos <cehoyos@ag.or.at>
Tested-by: Carl Eugen Hoyos <cehoyos@ag.or.at>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'f4cd8b80b9cb2a9a4112d8abb1d3b93cd3b4e467'

* commit 'f4cd8b80b9cb2a9a4112d8abb1d3b93cd3b4e467':
  rtmpproto: Track last received timestamp

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '9bec3ca2b878c83d2337bc6095bd51c3e3f8eef0'

* commit '9bec3ca2b878c83d2337bc6095bd51c3e3f8eef0':
  rtmpproto: Add pause support

Conflicts:
	libavformat/version.h

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Support raw dvdsub palette as stored on normal dvd's

This is how the palette is stored on dvd's. Currently
only xbmc passes the palette information to libavcodec
this way.
Check return value of avio_seek and avoid modifying state if it fails

The code still modifies state if the timestamp is not found. Not
sure exactly how to avoid that.
asf hacks
if av_read_packet returns AVERROR_IO, we are done. ffmpeg's codecs might or might not handle returning any completed demuxed packets correctly
added: Ticket #7187, TV Teletext support for DVB EBU Teletext streams
Don't accept mpegts PMT that isn't current
Don't reparse PMT unless it's version has changed
Read PID timestamps as well as PCR timestamps to find location in mpegts stream
Get stream durations using read_timestamp
changed: allow 4 second skew between streams in mov before attempting to seek
fixed: memleak in mpegts demuxer on some malformed (??) mpegts files with too large pes packets

at-visions sample file brokenStream.mpg