lavfi: replace empty input/output lists with null pointers

Signed-off-by: Mans Rullgard <mans@mansr.com>
buffersrc: add const to the AVFrame* argument of av_buffersrc_write_frame()
lavf/id3v2: do not export empty fields.

This also avoids a memleak.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
id3v2: strdup the genre name explicitly.

It would have been done anyway in the av_dict_set() call.

This simplifies the code and avoid a warning because of assigning a
const string from ff_id3v1_genre_str to a non-const variable.

Signed-off-by: Anton Khirnov <anton@khirnov.net>
avconv: don't pass a bogus parameter to avfilter_graph_create_filter().

The buffer sink does not take any parameters.

Fixes an uninitialized variable warning.
lavc: add const to private codec class initialization.

Silences a warning about discarding const.
lavc: replace AVCodecContext.encode with subtitle-specific callback

AVCodecContext.encode is currently used only for subtitles, encode2 is
used for audio and video.
xsubenc: reindent
avfiltergraph: silence an uninitialized variable warning

The warning is:
libavfilter/avfiltergraph.c: In function ‘avfilter_graph_config’:
libavfilter/avfiltergraph.c:528:9: warning: ‘best_idx’ may be used uninitialized in this function [-Wuninitialized]
libavfilter/avfiltergraph.c:479:13: note: ‘best_idx’ was declared here

Initialize it to an invalid value and add an assert that it's properly
set later.
alsdec: check opt_order.

Fixes out of array write in quant_cof.
Also make sure no invalid opt_order stays in the context.

Fixes CVE-2012-2775

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
alsdec: Check k used for rice decoder.

Values that fail this check will cause failure of decode_rice()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
alsdec: Check that quantized parcor coeffs are within range.

ALS spec:
	11.6.3.1.1 Quantization and encoding of parcor coefficients
	...
	In all cases the resulting quantized values ak are restricted to the range [-64,63].

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
alsdec: Fix out of ltp_gain_values read.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
alsdec: fix number of decoded samples in first sub-block in BGMC mode.

Fixes CVE-2012-2790

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
alsdec: check return values.

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
alsdec: fix misplaced parentheses.

Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
configure: include flags in nm variable

This simplifies ensuring proper flags are used when the default
is overridden by the system or on the command line.

Signed-off-by: Mans Rullgard <mans@mansr.com>
get_cabac_inline_x86: workaround clang bug with disabled optimizations

gcc produces binary identical output relative to before this change

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
nsvdec: change 2 commented assert() to av_assert()

they keep showing up if i grep for non av assert()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
swscale: change assert() to av_assert()

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