avcodec/smc: fix off by 1 error

Fixes out of array access
Fixes: asan_heap-oob_1685bf0_5_asan_heap-oob_1f35116_430_smc.mov

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/svq3: Dont memcpy AVFrame

This avoids out of array accesses

Fixes: asan_heap-uaf_21f42e4_9_asan_heap-uaf_21f42e4_278_gl2.mov

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
sdp: add support for H.261

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/vorbisdec: Fix off by 1 error in ptns_to_read

Fixes read of uninitialized memory
Fixes: asan_heap-uaf_18dac2b_9_asan_heap-uaf_22eb375_208_beta3_test_small.ogg

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/mpegts: Check desc_len / get8() return code

Fixes out of array read
Fixes: signal_sigsegv_844d59_10_signal_sigsegv_a17bb7_366_mpegts_mpeg2video_mp2_dvbsub_topfield.rec

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/mpegts: use a padded buffer in read_sl_header()

Fixes overread
Fixes: asan_heap-oob_84f75d_8_asan_heap-oob_a2a00a_341_mbc.ts

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
configure: Add -lrt dependency to avutil's pc file.

This is needed for clock_gettime.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
fate-vc1_ilaced_twomv: use -flags +bitexact

Also updates the reference since it was generated by the non-bitexact
x86 specific code.
Merge commit '7d97511e13ef30cd99bae0e36400de055b72918d'

* commit '7d97511e13ef30cd99bae0e36400de055b72918d':
  configure: Add -lrt dependency to avutil's pc file.

Conflicts:
	configure

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avformat/assdec: make sure pos is initialized

Fixes use of uninitialized memory
Fixes: signal_sigsegv_504fb0_10_signal_sigsegv_504fb0_343_mewmew_ssa.avi

Found-by: Mateusz j00ru Jurczyk and Gynvael Coldwind
avcodec/h264: Check mode before considering mixed mode intra prediction

Fixes out of array read
Fixes: asan_heap-oob_e476fc_2_asan_heap-oob_1333ec6_61_CAMACI3_Sony_C.jsv

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
lavc/libx264: Fix compilation with libx264 version < 142.
avcodec/hevc: fix chroma transform_add size

Fixes accessing misaligned address
Fixes: signal_sigsegv_1feb99c_10_signal_sigsegv_2d1d35c_79_cov_691940146_EXT_A_ericsson_3.bit

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
x86/hevc: get rid off packusdw for ssse3 compatibility

cherry picked from commit df8ebe304df453f26c28ff8f11d607f49b90a4c2

Fixes out of array access
Fixes: asan_stack-oob_1046454_9_asan_stack-oob_15a9e7c_170_WP_MAIN10_B_Toshiba_3.bit

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '36f3aec3630f27df64f4ff2b52a1c9ced760eb52'

* commit '36f3aec3630f27df64f4ff2b52a1c9ced760eb52':
  fate-vc1_ilaced_twomv: use -flags +bitexact

Conflicts:
	tests/ref/fate/vc1_ilaced_twomv

See: 233d1acb7095b3dc89975cd4598c294cc4c08887
Merged-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/on2avc: Check number of channels

Fixes out of array access
Fixes: asan_heap-oob_4da4f3_7_asan_heap-oob_4da4f3_173_Xmen_avc_500.vp6

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
vc1: Do not assume seek happens after decoding

If a seek is requested before the decoding start there is no
current picture.

CC: libav-stable@libav.org
x11grab: Check for XFixes availability at runtime
x11grab: Check XFixesGetCursorImage return value

It could return NULL if the cursor is outside the screen, the connection
timed out or the system is out of memory.

CC: libav-stable@libav.org
x11grab: Check the XQueryPointer return value

The paint_mouse_pointer() code uses XFixes to retrieve the cursor
coordinates, but XFixes gives no information about which screen the
pointer is on; this results in always drawing the cursor on the
captured screen even if the mouse pointer was on another screen.

For example, when capturing from screen 1 (i.e. -f x11grab -i ":0.1")
the cursor was being drawn in the captured image even when the mouse
pointer was actually on screen 0, which is wrong and visually confusing.

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