This fixes at least issues with empty lines, and also allows CRLF lines
(in case a user makes its own preset on a MS plateform).

This allows the following usages:
FFMPEG_DATADIR=presets ./ffmpeg -f lavfi -i testsrc=d=5 -vcodec libx264 -vpre ipod640 -f null -
FFMPEG_DATADIR=presets ./ffmpeg -f lavfi -i testsrc=d=5 -vpre libx264-ipod640 -f null -

The second example was broken even if documented.

They are now replaced with presets/ directory. WIN32 still seems to use
a ffpresets/ directory, but it doesn't look like to be deployed at
install time.

This adds support for png image2pipe streaming

Update to latest git by: Eugene Ware <eugene@noblesamurai.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

code based on the solution in vorbis
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Fixes crash in bug #1219.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

* https://github.com/mjbshaw/FFmpeg-OpenJPEG-J2K-Encoder:
  libopenjpegdec: respect JP2 color space, fix ticket 1179
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Bradshaw <mbradshaw@sorensonmedia.com>

* qatar/master:
  mpeg12: fixed parsing in some mpeg2 streams
  Add SMPTE240M transfer characteristics flag.
  mpegts: Some additional HDMV types and reg descriptors for mpegts
  motionpixels: Clip YUV values after applying a gradient.
  jpeg: handle progressive in second field of interlaced.
  ituh263dec: Implement enough of Annex O (scalability) to fix a FPE.
  h263: more strictly forbid frame size changes with frame-mt.
  h264: additional protection against unsupported size/bitdepth changes.
  tta: prevents overflows for 32bit integers in header.
  configure: remove malloc_aligned.
  vp8: update frame size changes on thread context switches.
  snowdsp: explicitily state instruction size.
  wmall: fix reconstructing audio with uncoded channels
  WMAL cosmetics: fix indentation
  gitignore: add Win32 library suffixes

Conflicts:
	configure
	libavcodec/h263dec.c
	libavcodec/h264.c
	libavcodec/ituh263dec.c
	libavcodec/mjpegdec.c
	libavcodec/wmalosslessdec.c
	libavcodec/x86/snowdsp_mmx.c
	libavformat/mpegts.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Implement it using av_buffersrc_add_ref.

This will make merging with the audio part easier.

This will make merging the check with the audio part easier.

This function merges the features of
av_vsrc_buffer_add_video_buffer_ref() and
av_buffersrc_buffer().

Compared to av_opt_ptr, accessors bring:

- better performance (negligible);
- compile-time type check;
- link-time existence check
  (or at worst, a dynamic linker error instead of a NULL dereference).

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>