This is more portable and avoids warnings with compilers that do not
properly support av_unused.

This avoids an unused variable warning with hardcoded tables.

This avoids a trillion warnings from MSVC.

This reduces inter-library dependencies.

These are the only WMA bits shared with binkaudio. Splitting them off
reduces the binnkaudio dependency on general WMA code.

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

Reset the settings as it is done for x264.

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

Thanks to Pascal Massimino and Michael Militzer for relicensing as LGPL.

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

These function pointers already existed in the ARM code. Adding them globally
allows calls to the function pointers to access arch-optimized versions of the
functions transparently.

The HAVE_ prefix is reserved for macros set by configure.

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

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

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

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

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

Only set a value if _WIN32_WINNT is undefined or smaller than 0x0600. This is
cleaner than unconditional definition and avoids a number of redefinition
warnings. Also only define a value in one of the two dxva2 headers.

This avoids related incompatible pointer type warnings.

Leftover of a4d3c20035.

Even if sps.crop is true, the cropping amount may be zero.
Fixes a sample with a valid but broken container cropping.

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

As written in the comment above, skip must be added only if a
start code is found.

MpegEncContext based decoders are only fully initialized after the first
ff_thread_get_buffer() call. The RV30/40 decoders may fail before a frame
buffer was requested. ff_mpeg_update_thread_context() fails on half
initialized MpegEncContexts. Since this can only happen before a the
first frame was decoded there is no need to call
ff_mpeg_update_thread_context().

Based on patches by John Stebbins and tested by John Stebbins.

CC: libav-stable@libav.org

The asserts check struct members that are not referenced in guess_mv()
and one of them fails to compile.

The packet buffer allocation considers the alpha channel as DCT-coded,
while it is actually run-coded and thus requires a larger buffer.

CC: libav-stable@libav.org

Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The buffer allocation may be incorrect (e.g. with an alpha plane),
and currently causes the buffer to be set to NULL by init_put_bits,
causing a crash later on.

So, detect that situation, and if detected, reallocate the buffer
and ask for a sample that shows the problem.

CC: libav-stable@libav.org

Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

If the allocated size, despite best efforts, is too small, exit
with the appropriate error.

CC: libav-stable@libav.org

Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

The LZMA support is a semi-official extension supported by libtiff 4.0.0
and later.

Signed-off-by: Diego Elio Pettenò <flameeyes@flameeyes.eu>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

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

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

ff_MPV_common_init requires the frame dimensions which get parsed in
h261_decode_picture_header.

ff_MPV_common_init requires the frame dimensions which get parsed in
*_decode_picture_header.

One step in untangling the mpegvideo code and fixing some problems in
the order that initialization is being done in h263dec and h261dec.

Also fix some comment typos.

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