How to do hardware decoding of video?

[mcerveny]

???

• downloaded and flashed bionic-lxde-rock64-0.7.9-1067-arm64.img
  
• downloaded free movie bbb-1920x1080-cfg06.mkv
  
• test run
  
  Code:

  $ ### alsa/plughw:CARD=I2S,DEV=0 audio output is analog jack $ ### only 3 frames dropped (10 min video played), no errors, smooth video play $ rkmpv --audio-device=alsa/plughw:CARD=I2S,DEV=0 bbb-1920x1080-cfg06.mkv Playing: bbb-1920x1080-cfg06.mkv (+) Video --vid=1 (*) (hevc 1920x1080 60.000fps) (+) Audio --aid=1 (*) (aac 6ch 48000Hz) [vo/gpu] Can't handle VT release - signal already used [vo/gpu/opengl] Failed to set up VT switcher. Terminal switching will be unavailable. [vo/gpu/opengl] Could not choose EGLConfig! mpi: mpp version: Without VCS, under bleeding AO: [alsa] 48000Hz stereo 2ch float H265D_PARSER: No start code is found. Using hardware decoding (rkmpp). VO: [gpu] 1920x1080 drm_prime[nv12] [vo/gpu] Using HW-overlay mode. No GL filtering is performed on the video! AV: 00:10:34 / 00:10:34 (99%) A-V: 0.000 Dropped: 3
• verify video chain during video play
  
  Code:

  $ sudo bash # ### verify rkvdec is active (eg. HW decode) # cat /sys/kernel/debug/pm_genpd/pm_genpd_summary domain status slaves /device runtime status ---------------------------------------------------------------------- pd_vpu off /devices/platform/ff350800.iommu suspended /devices/platform/vpu_combo suspended pd_video on /devices/platform/ff360480.iommu active /devices/platform/ff360000.rkvdec active pd_hevc on /devices/platform/ff330200.iommu suspended /devices/platform/ff340800.iommu suspended /devices/platform/ff330000.h265e unsupported /devices/platform/ff340000.vepu unsupported # ### default clock running without overclocking (not needed for 1080p) # egrep 'armclk |aclk_rkvdec |cabac |vdec_core |ddrc ' /sys/kernel/debug/clk/clk_summary armclk 0 0 408000000 0 0 aclk_rkvdec 3 4 491519999 0 0 sclk_vdec_core 2 3 300000000 0 0 sclk_vdec_cabac 2 3 400000000 0 0 sclk_ddrc 2 2 786000000 0 0 # ### video is rendered to "win1-0" (on foreground, hw scaled from 1080p to monitor resolution), "win0-0" is Xorg with LXDE (on background) # cat /sys/kernel/debug/dri/0/summary VOP [ff370000.vop]: ACTIVE Connector: HDMI-A overlay_mode[0] bus_format[100a] output_mode[f] color_space[0] Display mode: 1280x1024p60 clk[108000] real_clk[108000] type[48] flag[5] H: 1280 1328 1440 1688 V: 1024 1025 1028 1066 win0-0: ACTIVE format: AR24 little-endian (0x34325241) SDR[0] color_space[0] csc: y2r[0] r2r[0] r2y[0] csc mode[0] zpos: 1 src: pos[0x0] rect[1280x1024] dst: pos[0x0] rect[1280x1024] buf[0]: addr: 0x000000000299b000 pitch: 5120 offset: 0 win1-0: ACTIVE format: NV12 little-endian (0x3231564e) SDR[0] color_space[3] csc: y2r[1] r2r[0] r2y[0] csc mode[1] zpos: 0 src: pos[0x0] rect[1920x1080] dst: pos[0x152] rect[1280x720] buf[0]: addr: 0x0000000003b6d000 pitch: 2304 offset: 0 buf[1]: addr: 0x0000000003b6d000 pitch: 2304 offset: 2488320 win2-0: DISABLED post: sdr2hdr[0] hdr2sdr[0] pre : sdr2hdr[0] post CSC: r2y[0] y2r[0] CSC mode[1]