This implements the 0x10 frame format for Interplay MVE movies. The
format is a variation on the 0x06 format with some changes. In addition
to the decoding map there's also a skip map. This skip map is used to
determine what 8x8 blocks can change in a particular frame.

This format expects to be able to copy an 8x8 block from before the last
time it was changed. This can be an arbitrary time in the past. In order
to implement this this decoder allocates two additional AVFrames where
actual decoding happens. At the end of a frame decoding changed blocks
are copied to a finished frame based on the skip map.

The skip map's encoding is a little convulted, I'll refer to the code
for details.

Values in the decoding map are the same as in format 0x06.
Signed-off-by: Hein-Pieter van Braam <hp@tmm.cx>

This implements the 0x06 frame format for Interplay MVE movies. The
format is relatively simple. The video data consists of two parts:

16 bits per 8x8 block movement data
a number of 8x8 blocks of pixel data

For each 8x8 block of pixel data the movement data is consulted. There
are 3 possible meanings of the movement data:
* zero     : copy the 8x8 block from the pixel data
* negative : copy the 8x8 block from the previous frame from an offset
             determined by the actual value of the entry -0xC000.
* positive : copy the 8x8 block from the current frame from an offset
             determined by the actual value of the entry -0x4000

Decoding happens in two passes, in the fist pass only new pixeldata is
copied, during the second pass data is copied from the previous and
current frames.

The codec expects that the current frame being decoded to still has the
data from 2 frames ago on it when decoding starts.
Signed-off-by: Hein-Pieter van Braam <hp@tmm.cx>

Interplay MVE can contain up to three different frame formats. They
require different streams of information to render a frame. This patch
changes the IP packet format to prepare for the extra frame formats.
Signed-off-by: Hein-Pieter van Braam <hp@tmm.cx>

Interplay MVE movies have a SEND_BUFFER operation. Only after this
command does the current decoding buffer get displayed. This is required
for the other frame formats. They are fixed-size and can't always encode
a full frame worth of pixeldata.

This code prevents half-finished frames from being emitted.
Signed-off-by: Hein-Pieter van Braam <hp@tmm.cx>

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

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Reviewed-by:vtarca@mobibase.com
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: Ticket5548
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

This is actually internal utvideo format.
Allows to make use of SIMD for median prediction for rgb(a) formats,
thus speeding up decoding.
Simplifies code, eases further developement and maintenance.

Update FATE because of pixel format switch.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

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

Signed-off-by: Kyle Swanson <k@ylo.ph>

Fixes: runtime error: signed integer overflow: 1157259380 + 1157259380 cannot be represented in type 'int'
Fixes: 2365/clusterfuzz-testcase-minimized-6020421927305216

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: runtime error: signed integer overflow: -163654656 * 256 cannot be represented in type 'int'
Fixes: 2367/clusterfuzz-testcase-minimized-4648678897745920

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes assertion failure
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Suggested-by: James Almer <jamrial@gmail.com>

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

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

Also fix undefined left shift of negative variable.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

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

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

~5-15% faster overall with main input without alpha.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

avcodec/hevcdec: Do not check the first ff_init_cabac_decoder() call in hls_decode_entry_wpp() for failure

The result of the call is not used in any testcase but breaks some cases if
its failure is considered.

Fixes regression found by jamrial
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: runtime error: signed integer overflow: 2080374785 + 2080374784 cannot be represented in type 'int'
Fixes: 2351/clusterfuzz-testcase-minimized-5359403240783872

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: runtime error: signed integer overflow: -2147483648 - 1 cannot be represented in type 'int'
Fixes: 2339/clusterfuzz-testcase-minimized-6663164320022528

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

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

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

Add unit test for set_ue_golomb_long.
Signed-off-by: Jun Zhao <jun.zhao@intel.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

add set_ue_golomb_long to support up to 2^32-2.
Reviewed-by: Mark Thompson <sw@jkqxz.net>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Jun Zhao <jun.zhao@intel.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

put_bits64() can write up to 64 bits into a bitstream.
Reviewed-by: Mark Thompson <sw@jkqxz.net>
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Jun Zhao <jun.zhao@intel.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Fixes: runtime error: left shift of 1965559808 by 4 places cannot be represented in type 'int'
Fixes: 2333/clusterfuzz-testcase-minimized-5223935677300736

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegReviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

Its been deprecated for over 3 years.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

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

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

Buffering more than one packet can be a huge performance improvement for
encoding files with small packets (e.g. wav) over SMB/CIFS.
Acked-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Marton Balint <cus@passwd.hu>

If flushing is not disabled, then mux.c will signal the end of the packets with
an AVIO_DATA_MARKER_FLUSH_POINT, and aviobuf will be able to decide to flush or
not based on the preferred minimum packet size set by the used protocol.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Marton Balint <cus@passwd.hu>

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Marton Balint <cus@passwd.hu>