configure: fix logic for threads in case of OpenCL is enabled.

Fixes ticket 3004.

Signed-off-by: Thilo Borgmann <thilo.borgmann@mail.de>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit d3a03d90a3d57cdc6f915a05f5f28ee4bb470d00)
avcodec/imgconvert/get_color_type: fix type for PAL8

Fixes Ticket3008

Fate changes as PAL8 gets used instead of BGR8

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 95666b22989b9b9f91a27da01b2bdbf4ee8022d3)
avcodec/parser: reset indexes on realloc failure

Fixes Ticket2982

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit f31011e9abfb2ae75bb32bc44e2c34194c8dc40a)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/ffv1dec: fix format detection

Fixes crash with carefuly designed files.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
(cherry picked from commit a27227d401adf12534dc7a26d72e43e2f35f8944)

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