If max in clean_index is set to a negative ast->sample_size, the
following loop never ends:
        while (max < 1024)
            max += max;

Thus set ast->sample_size to 0 if it would otherwise be negative.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Ronald S. Bultje <rsbultje@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>

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

If bit_rate is negative, it can trigger an av_assert2 in av_rescale_rnd.

Since av_rescale returns int64_t, but st->codec_bit_rate is int, it can
also overflow into a negative value.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

* cehoyos/master:
  lavfi/cropdetect: Fix cropdetect for > 8 bit input.
  lavf/apngenc: Fix png remuxing by using default extension apng.
  lavf/mxfenc: Write correct interlaced flag when muxing dnxhd.
Merged-by: Michael Niedermayer <michaelni@gmx.at>

Reported and early patch version tested by forum user gridtank.
Reviewed-by: Tomas Härdin

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

The later is not correct
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This fixes a segmentation fault.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.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>

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

index_scale is set to matroska->time_scale of type uint64_t.

When index_scale is int, the assignment can overflow and e.g. result
in index_scale = 0. This causes a floating point exception due to the
division by index_scale.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This unifies the rotation extraction code between ffplay and ffmpeg
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

Signed-off-by: Anshul Maheshwari <er.anshul.maheshwari@gmail.com>
Reviewed-by: Clément Bœsch <u@pkh.me>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

AV_PIX_FMT_MONOBLACK has the AV_PIX_FMT_FLAG_BITSTREAM flag, i.e.
linesize can be smaller than width.

Since x_offset is only check against the width, this can lead to
x_offset * bpp >= image_linesize.

In this case ptr could be set to a position outside the image_buf in
png_handle_row, leading to memory corruption and thus crashes.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

During the loop ret can get changed. Since it is not set on all failure
paths, decode_frame_common can return 0 even though an error occurred.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

This check was removed in commit 08aec6f6, but
s->last_picture.f->data[0] is still used in handle_p_frame_apng
unconditionally.

This fixes a segmentation fault.
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

avcodec/wavpack: Check L/R values before use to avoid harmless integer overflow and undefined behavior in fate
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

benchmark (on intel core2 duo, gcc 4.9.1)
input samples duration 00:03:39.59
command: time -p ffmpeg -f f32le -ac 2 -ar 44100 -i input.pcm \
         -filter_complex showcqt=fullhd=0:gamma=$gamma \
         -f rawvideo -y /dev/null
gamma  previous  modified
  1    48.49 s   45.38 s
  2    49.33 s   48.11 s
  3    80.86 s   59.80 s
  4    80.84 s   51.25 s
  5    80.75 s   61.06 s
  6    80.93 s   61.80 s
  7    80.03 s   61.56 s
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Reviewed-by: Timo Rothenpieler <timo@rothenpieler.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

Since version 4, plane_index for the alpha plane is 1 in the case chroma_planes is 0.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

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

* commit '3edeb774':
  configure: Allow log2 with MSVC 2013 onwards.

Conflicts:
	configure

See: 4d93e758Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '863ee068':
  configure: Use the right local variable in the MSVC and ICL probes

Conflicts:
	configure
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '709e1c91':
  avprobe: Print the display matrix from per-stream sidedata

Conflicts:
	avprobe.c

See: 08152f2dMerged-by: Michael Niedermayer <michaelni@gmx.at>

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

Idea from 709e1c91 by Martin Storsjö
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '3080b049':
  avprobe: Support writing arrays of integers without keys

Conflicts:
	avprobe.c

Not merged
Merged-by: Michael Niedermayer <michaelni@gmx.at>

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

* commit '16302246':
  avconv: Add an option for automatically rotating video according to display matrix

Conflicts:
	Changelog
	ffmpeg_opt.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit 'e2d50fc2':
  avplay: Add support for rotated video

Conflicts:
	configure
	doc/ffplay.texi
	ffplay.c

See: 08c51e12Merged-by: Michael Niedermayer <michaelni@gmx.at>

* commit '21180b73':
  avplay: Factorize code for adding filters to the filter pipeline

Conflicts:
	ffplay.c

See: 08c51e12Merged-by: Michael Niedermayer <michaelni@gmx.at>