Filters can change the timings, so input files must not
necessarily be read at the same rythm. This patch select
the input file to read based on the timestamp at output
instead of input. With complex filter graphs, finding the
input for a given output is done by making a request and
checking to what buffer source it has been forwarded.

The assert is no longer needed as the buffer is allocated after
the size is known now.
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 from qatar (55c3a4f6)
Author of the code was probably Mohamed or Kostya
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

code from qatar (55c3a4f6)
Author of the code was probably Mohamed or Kostya
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* dwbuiten/master:
  wav: Add check for 'fmt' tag in SMV code
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* qatar/master:
  FATE: fix the asyncts test
  build: Drop gcc-specific warning flag from header compilation rule
  FATE: add a test for the asyncts audio filter.
  matroskadec: return more correct error code on read error.
  buffersrc: check ff_get_audio_buffer() for errors.
  lavfi: check all ff_get_video_buffer() calls for errors.
  lavfi: check all avfilter_ref_buffer() calls for errors.
  vf_select: avoid an unnecessary avfilter_ref_buffer().
  buffersrc: avoid creating unnecessary buffer reference
  lavfi: use avfilter_unref_bufferp() where appropriate.
  vf_fps: add more error checks.
  vf_fps: fix a memleak on malloc failure.
  lavfi: check all ff_start_frame/draw_slice/end_frame calls for errors
  lavfi: add error handling to end_frame().
  lavfi: add error handling to draw_slice().
  lavfi: add error handling to start_frame().

Conflicts:
	Makefile
	ffplay.c
	libavfilter/buffersrc.c
	libavfilter/vf_boxblur.c
	libavfilter/vf_drawtext.c
	libavfilter/vf_fade.c
	libavfilter/vf_frei0r.c
	libavfilter/vf_hflip.c
	libavfilter/vf_overlay.c
	libavfilter/vf_pad.c
	libavfilter/vf_scale.c
	libavfilter/video.c
	libavfilter/vsrc_color.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

If there is a 'SMV0' tag, but no 'fmt' tag, it is possible that
'st' got used as NULL.
Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>

* commit '1470ce21':
  Bump libavcodec and libavformat minor versions for G.723.1 decoder and demuxer
  G.723.1 demuxer and decoder
  Add a shift parameter to celp_lp_synthesis_filter()
  libopenjpeg: K&R formatting cosmetics
  yadif: use emms_c() instead of inline assembly for emms invocations.
  ac3: don't use different names for option tables in the template file.
  lavfi: use const for AVFilterPad declarations in all filters.
  adpcm: don't duplicate identical AVSampleFmt array for each encoder.
  configure: cosmetics: Group test dependencies together
  configure: add more passthrough flags in tms470 filter
  configure: move flag filtering functions out of if/else blocks

Conflicts:
	Changelog
	configure
	doc/general.texi
	libavcodec/Makefile
	libavcodec/ac3enc_fixed.c
	libavcodec/allcodecs.c
	libavcodec/eac3enc.c
	libavcodec/g723_1.c
	libavcodec/g723_1_data.h
	libavcodec/libopenjpegdec.c
	libavcodec/libopenjpegenc.c
	libavcodec/v210dec.h
	libavcodec/version.h
	libavfilter/af_anull.c
	libavfilter/asrc_anullsrc.c
	libavfilter/f_settb.c
	libavfilter/fifo.c
	libavfilter/split.c
	libavfilter/src_movie.c
	libavfilter/vf_aspect.c
	libavfilter/vf_blackframe.c
	libavfilter/vf_boxblur.c
	libavfilter/vf_copy.c
	libavfilter/vf_crop.c
	libavfilter/vf_cropdetect.c
	libavfilter/vf_delogo.c
	libavfilter/vf_drawbox.c
	libavfilter/vf_drawtext.c
	libavfilter/vf_fade.c
	libavfilter/vf_fieldorder.c
	libavfilter/vf_format.c
	libavfilter/vf_frei0r.c
	libavfilter/vf_gradfun.c
	libavfilter/vf_hflip.c
	libavfilter/vf_hqdn3d.c
	libavfilter/vf_libopencv.c
	libavfilter/vf_lut.c
	libavfilter/vf_null.c
	libavfilter/vf_overlay.c
	libavfilter/vf_pad.c
	libavfilter/vf_pixdesctest.c
	libavfilter/vf_scale.c
	libavfilter/vf_select.c
	libavfilter/vf_setpts.c
	libavfilter/vf_showinfo.c
	libavfilter/vf_slicify.c
	libavfilter/vf_transpose.c
	libavfilter/vf_unsharp.c
	libavfilter/vf_vflip.c
	libavfilter/vf_yadif.c
	libavfilter/vsrc_color.c
	libavfilter/vsrc_testsrc.c
	libavformat/Makefile
	libavformat/allformats.c
	libavformat/g723_1.c
	libavformat/version.h
Merged-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>

A reference is kept in the queue and freed after use.

Nellymoser is float, so use oneoff comparison instead of md5.

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

It adds the following header to the HTML files:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
which helps some browsers to display correctly the few non-ASCII
characters in the doc.

The flag was added to avoid excessive warning spam, but nowadays those
warnings no longer occur in such large numbers as to require silencing.
Besides, gcc-specific flags do not belong in the Makefiles.

These filters are designed for storing and transmitting video sequences
with alpha using higher-efficiency codecs such as x264 which don't
natively support an alpha channel. 'alphaextract' takes an input stream
with an alpha channel and returns a video containing just the alpha
component as a grayscale value; 'alphamerge' takes an RGB or YUV stream
and adds an alpha channel recovered from a second grayscale stream.
Signed-off-by: Steven Robertson <steven@strobe.cc>
Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Avoid fastidious creation and immediate destroy of the display in case
one of the dither options fails to be set.

Also add NULL checks in write_trailer(), which are now necessary since
the function can be called when not all the components have been
initialized.

More consistent with libcaca function names. Should not harm since the
device was added less than one day ago.

'mono' came before 'mono16' in the list of colorspace alternatives,
causing files of the latter type to be parsed as the former.