Shaofei Wang eb6bb8f32f
libavcodec/vp8dec: fix the multi-thread HWAccel decode error ...
Fix the issue: https://github.com/intel/media-driver/issues/317
the root cause is update_dimensions will be called multple times
when decoder thread number is not only 1, but update_dimensions
call get_pixel_format in each decode thread will trigger the
hwaccel_uninit/hwaccel_init more than once. But only one hwaccel
should be shared with all decode threads.
in current context,
there are 3 situations in the update_dimensions():
1. First time calling. No matter single thread or multithread,
get_pixel_format() should be called after dimensions were
set;
2. Dimention changed at the runtime. Dimention need to be
updated when macroblocks_base is already allocated,
get_pixel_format() should be called to recreate new frames
according to updated dimension;
3. Multithread first time calling. After decoder init, the
other threads will call update_dimensions() at first time
to allocate macroblocks_base and set dimensions.
But get_pixel_format() is shouldn't be called due to low
level frames and context are already created.
In this fix, we only call update_dimensions as need.
Signed-off-by: Wang, Shaofei <shaofei.wang@intel.com >
Reviewed-by: Jun, Zhao <jun.zhao@intel.com >
Reviewed-by: Haihao Xiang <haihao.xiang@intel.com >
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com >
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