These variables are now in separate scopes and thus do not
need unique names.
Signed-off-by: Mans Rullgard <mans@mansr.com>

This moves declarations without initialisers or with constant
initialisers to the start of a block, and adds do {} while(0)
around some macros, thus allowing declarations within them.
Signed-off-by: Mans Rullgard <mans@mansr.com>

Interlaced content for most codec requires it.
This patch is a stop-gap pending a serious rework to support
codecs with non 16 pixel macroblocks.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

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

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

libavcodec/mpegvideo_enc.c:1209: warning: ISO C90 forbids mixed declarations and code

The encoder depends on the common code, so link against it.

The generic ADPCM codes depends on the ADPCM data tables.

These decoders depend on the mpegaudio DSP code.

Fixes Bug 110.
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

timestamp_len and timestamp_res intialize to zero.

This was an error rebasing 4682a1dc for
commit. The "pes" variable guaranteed to be NULL in that block.

This fixes warnings about assignment from incompatible
pointer type.
Signed-off-by: Martin Storsjö <martin@martin.st>

Trailing bits are likely to be non-zero if the NAL unit is truncated.
Clearing the bits make overreads of the bitstream less likely in this
case. Fixes playback of
http://streams.videolan.org/streams/mp4/Mr_MrsSmith-h264_aac.mp4 which
has a forbidden byte sequence of 0x00 0x00 0x00 in it SPS.

Signed-off-by: Martin Storsjö <martin@martin.st>

Signed-off-by: Martin Storsjö <martin@martin.st>

It holds the size of the current payload.

It behaves similarly to image2 muxer

It should be used to mark codepath that can be reached only through
programming error.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>

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

This reverts commit 87eebb34.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>

Start code emulation prevention is only required in Annex B bytestream
packed NAL units. For other coding formats the size is already known.
Looking for a start code prefix can result in false positives like in
http://streams.videolan.org/streams/mp4/Mr_MrsSmith-h264_aac.mp4
which has a false positive in the SPS.

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Width and height might get passed as 0 and would cause floating point
exceptions in decode_frame.
Fixes bugzilla #149
Signed-off-by: Janne Grunau <janne-libav@jannau.net>

Signed-off-by: Mans Rullgard <mans@mansr.com>

This was intended as an optimisation for skipped blocks in MPEG2
P-frames and never used elsewhere.  Removing this "optimisation"
speeds up MPEG2 decoding by 1-2% (ARM Cortex-A9).
Signed-off-by: Mans Rullgard <mans@mansr.com>

This is unnecessary complication that only prints a message and does not
affect decoding.

Fixes avformat_find_stream_info() on streams with number of frames <
thread count.

This fixes integer multiplication overflows in RGB48 output
(vertical) scaling as detected by IOC. What happens is that for
certain types of filters (lanczos, spline, bicubic), the
intermediate sum of coefficients in the middle of a filter can
be larger than the fixed-point equivalent of 1.0, even if the
final sum is 1.0. This is fine and we support that.

However, at frame edges, initFilter() will merge the coefficients
for the off-screen pixels into the top or bottom pixel, such as
to emulate edge extension. This means that suddenly, a single
coefficient can be larger than the fixed-point equivalent of
1.0, which the vertical scaling routines do not support.

Therefore, remove the merging of coefficients for edges for
the vertical scaling filter, and instead add edge detection
to the scaler itself so that it copies the pointers (not data)
for the edges (i.e. it uses line[0] for line[-1] as well), so
that a single coefficient is never larger than the fixed-point
equivalent of 1.0.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

Previously the decoder only worked if the user had set avctx->pix_fmt
manually. For some reason the libavformat tmv demuxer sets this, so
the problem was not visible in avplay etc.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>