Samplerate and channel layouts must be set in query_formats.

Before the change, filter_frame() always waited for 2 samples in the
bottom frames queue. This notably fixes commands such as
./ffplay tests/lena.pnm -vf split,blend=c0_mode=addition

This patch improves af_asyncts behavior on streams with bogus PTS, which
are either non-monotonic, or contain PTS jitter, and trigger the
non-monotonicity error. With this patch, af_asyncts is able to correct
these streams and avoid the error.

Firstly, it fixes resample compensation calculation by supplying proper
units to avresample_set_compensation (sample count per second instead
of sample count per some arbitrary frame size). Also, the calculation of
the compensation itself is fixed - delta is proportional to an adjustment
of the compensation, not the compensation itself. Ideally, the compensation
should converge to a value that keeps delta at zero.

To be able to deal with sources with PTS jitter even without resampling,
small PTS errors are adjusted, so the output frames do not overlap.

Finally, one more monotonicity check is added.

The FATE reference changes because now there is 8 less samples of
silence because of the pts jitter.

Signed-off-by: Jindřich Makovička <makovick@gmail.com>

Signed-off-by: Paul B Mahol <onemda@gmail.com>

This should fix compilation on openbsd

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

Inside send_silence(), delta_ts was used inconsistently:
sometimes as the new value, sometimes as the old value.

Consistently use it as the new value, and add an argument
to know the last segment duration.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

It is supposed to be used with mencoder only and does
nothing when used with ffmpeg.

Signed-off-by: Paul B Mahol <onemda@gmail.com>

Vertical shift is log2_chroma_h, not log2_chroma_w.

Number of planes is not always equal to the number of components even
for formats marked with PIX_FMT_PLANAR -- e.g. NV12 has three components
in two planes.

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

Move non-obsolete functions, structures and constants outside
the scope of "#if FF_API_AVFILTERBUFFER".

Add attribute_deprecated to av_buffersink_get_buffer_ref()
and av_buffersink_poll_frame().

Add doxygen for av_buffersink_get_frame_flags().

Introduced in 01649c7, lost in the API change.

It is supposed to be height * linesize, not width * linesize.
Thanks to Hendrik Leppkes for pointing out the bug.

Fixes memleak spotted by FATE.

The functions which actually drive the filter graph by pushing
frames through it need to ensure an aligned stack for SIMD functions.

This fixes a crash in YADIF filter when using a mingw build in a MSVC application.

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

Regression since de3e0ab3.

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

The filter already checks that width (and height) are greater than 3.

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

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

These smaller samples do not need to be unpacked to double words
allowing the code to process more pixels every iteration (still 2 in MMX
but 6 in SSE2).  It also avoids emulating the missing double word
instructions on older instruction sets.

Like with the previous code for 16-bit samples this has been tested on
an Athlon64 and a Core2Quad.

Athlon64:
1809275 decicycles in C,    32718 runs, 50 skips
 911675 decicycles in mmx,  32727 runs, 41 skips, 2.0x faster
 495284 decicycles in sse2, 32747 runs, 21 skips, 3.7x faster

Core2Quad:
 921363 decicycles in C,     32756 runs, 12 skips
 486537 decicycles in mmx,   32764 runs,  4 skips, 1.9x faster
 293296 decicycles in sse2,  32759 runs,  9 skips, 3.1x faster
 284910 decicycles in ssse3, 32759 runs,  9 skips, 3.2x faster

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

This is a fairly dumb copy of the assembly for 8-bit samples but it
works and produces identical output to the C version.  The options have
been tested on an Athlon64 and a Core2Quad.

Athlon64:
1810385 decicycles in C,    32726 runs, 42 skips
1080744 decicycles in mmx,  32744 runs, 24 skips, 1.7x faster
 818315 decicycles in sse2, 32735 runs, 33 skips, 2.2x faster

Core2Quad:
 924025 decicycles in C,     32750 runs, 18 skips
 623995 decicycles in mmx,   32767 runs,  1 skips, 1.5x faster
 406223 decicycles in sse2,  32764 runs,  4 skips, 2.3x faster
 387842 decicycles in ssse3, 32767 runs,  1 skips, 2.4x faster
 307726 decicycles in sse4,  32763 runs,  5 skips, 3.0x faster

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

Since lavfi works natively with AVFrame now, these functions are no longer
necessary and can be removed in a future bump.

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