Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

Schroedinger is a fast decoder of the Dirac video codec.  This plugin
is currently the most complete dirac decoder (compared with ffmpeg or
codec/dirac.c) and should ideally be used in preference

- Input data blocks are handed over to schro which eventually free's them
  (avoids memcpy).  Freed by SchroBufferFree()
- Share picture storage between schro and vlc -- avoids memcpy of picture
  data after decoding.  Freed by SchroFrameFree()
- Autodetection of libschroedinger in configure.ac
  May be disabled with --disable-schroedinger
- Bumped decoding priority to 200, to beat libavcodec.c and dirac.c,
  this module does a better job than either of them.

- Remove potential memory leak when allocating pictures
- Always use p_block rather than priv in SchroBufferFree
- Performs pts interpolation for streams that do not have one pts per picture
- Set progressive, top_field_first and nb_fields on picture_t's properly
- Fix copyright date in header
- Reorder picture_pts_t structure for efficiency
- Print 64 bit types correctly with "%"PRId64
- No need to p_buffer->i_buffer=0 before buffer_Release()
- Work around schroedinger's lack of handling multiple parseunits per block
- Work around corrupt data produced by demux/ts.c after discontinuity
- Correctly reset decoder at Dirac END_OF_SEQUENCE
- Split decoding loop into two parts:
   - First, injecting [valid] parse units into the decoder
   - Second, itterating the decoder
Signed-off-by: David Flynn <davidf@woaf.net>
Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

Otherwise, every one would have to check the return value of var_Get ...

(cherry picked from commit 105335dd73917555335c03460aaa67fcdb9d4a55)

When i_size is sufficiently large, we would overflow malloc(), and then
overwrite the heap with stream_Read().

Bug reported by: Alin Rad Pop, Secunia Research.

(cherry-picked from commit 95e2f0ff579a5b987cbde9454aa1fc86080528e2)

(for example, on invalid file ...)

   share/lua/meta/googleimage.lua, function fetch_art(): share/lua/meta/googleimage.lua:43: calling
   'stream' on bad self (string expected, got table)

...so we don't try to vout_Control() it after it's been destroyed.
We cannot yield the video output for real either, as it would prevent
it from being destroyed once it is not needed anymore.

Releasing other thread's references is not a very good idea...

The error message was overriden to "Illegal seek"