The showspectrum filter gets multiple channel (any count) support.

Signed-off-by: Rudolf Polzer <divverent@xonotic.org>

Only power-of-two FFTs are supported; so to get a full spectrum
(that is, one up to Nyquist), the height must be a power of two.

Therefore, change the default height from 480 to 512.

Signed-off-by: Rudolf Polzer <divverent@xonotic.org>

See git blame of pre split avfilter/vf_hqdn3d.c

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

Reference: 7a1944b907

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

Note: The ret variable was unused.

The value is lost because of avfilter_copy_buffer_ref_props().

Fix trac ticket #2217.

Without that test, ff_bufqueue_add silently discards the
oldest buffer, that leaves in[i].nb_samples inconsistent,
and causes later a segfault.

The total number of implemented filters is already over 128.

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

Adds allpass, bass, bandpass, bandreject, biquad,
equalizer, highpass, lowpass and treble filter.

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

CC:libav-stable@libav.org

CC:libav-stable@libav.org

Found-by: inferno@chromium.org
Reported-by: Dale Curtis <dalecurtis@google.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Add a field to the AVBufferSinkParams for a list of accepted
channel counts.
Change the default value for the lists in AVBufferSinkParams
to NULL, to let lavfi fill them with something useful.
The fail_enomem path is unneeded because filters are uninited
on failure.

Signed-off-by: Vladimir Pantelic <vladoman@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

This is wrong function to check for input parameters.
Function is not needed because query_formats() already
sets supported sample rates.

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

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

outpicref is not always in synch with showwaves->outpicref, which is
changed as a side effect of the call to functions.

Fix regression introduced in 5f634480d1c4ed7711a15d1be07e49177cf351c1,
+10l to me.

Found-by: durandal_1707
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Move the first use of `link' after the null pointer check.

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Reviewed-by: Stefano Sabatini <stefasab@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Correct the time interval between logged data rows to the expected
value of 100 milliseconds by naming a new loop counter variable
to be distinct from loop counters for inner loops that
inadvertently change the outer loop operation.

This suggested patch is 1 of 3 for Ticket #2144 "libavfilter ebur128
loudness inaccuracy, irregular time interval, LFE interference".
This suggested patch supersedes the contribution of January 15, 2013
in the thread “[PATCH] lavfi: EBU R.128 irreg time, ch weights, skip
LFE” which combined multiple fixes in one patch.

Reviewed-by: Clément Bœsch <ubitux@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Remove alpha_pix_fmts[].

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

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

Manually load registers to avoid using 8 registers on x86_32 with
compilers that do not align the stack (e.g. MSVC).

Signed-off-by: Diego Biurrun <diego@biurrun.de>

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

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

If nb_samples divide sample_rate and if nb_samples allow it, aevalsrc
should generate the exact amount of samples according to duration.

Example:
aevalsrc=0::n=480:s=48000:d=5.21 should generate 250080 samples.

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

EAGAIN is used internally in the code; it currently does not make
sense as a return code from the next filter.

Should fix CID966655.

Fix trac ticket #2128.

Signed-off-by: Stefano Sabatini <stefasab@gmail.com>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Unlike the original ff_start_frame code, the incoming reference
may be freed before that point.

Fix CID966654.