• Zhong Li's avatar
    lavf/qsv_scale: add scaling modes support · dd662bbd
    Zhong Li authored
    low_power mode will use a fixed HW engine (SFC), thus can offload EU usage.
    high quality mode will take EU usage (AVS sampler).
    
    Performance and EU usage (Render usage) comparsion on Intel(R) Xeon(R) CPU E3-1225 v5 @ 3.30GHz:
    
    High quality mode : ffmpeg -hwaccel qsv -c:v h264_qsv -i bbb_sunflower_1080p_30fps_normal_2000frames.h264 \
    -vf scale_qsv=w=1280:h=736:mode=hq -f null -
    fps=389
    RENDER usage: 28.10 (provided by MSDK metrics_monitor)
    
    Low Power mode: ffmpeg -hwaccel qsv -c:v h264_qsv -i ~/bbb_sunflower_1080p_30fps_normal_2000frames.h264 \
    -vf scale_qsv=w=1280:h=736:mode=low_power -f null -
    fps=343
    RENDER usage: 0.00
    
    Low power mode (SFC) may be disabled if not supported by
    MSDK/Driver/HW, and replaced by AVS mode interanlly.
    Signed-off-by: 's avatarZhong Li <zhong.li@intel.com>
    dd662bbd
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