Important: Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct
QT multimedia hardware acceleration on Intel
-
Hi,
we are trying to confirm if hardware acceleration is missing, not enabled, ... on our app stack.Our stack is : Ubuntu 16.04, running QT 5.7.0, compiled for GStreamer 1.0, low end Intel CPU, using NVIDIA NVS510 card, and NVIDIA nvidia-367 driver (apt-get install nvidia-367).
It all runs ok, except high CPU usage.
According to https://wiki.archlinux.org/index.php/GStreamer, GStreamer 1.0 supports hardware acceleration (VDPAU and VAAPI).
See vdpauinfo / vainfo command output below.Our hope was that by compiling QT5.7.0 for GStreamer 1.0 we will get hardware acceleration. Naive :) ?
Question: Can / how hardware acceleration be enabled on our spp stack.
vdpauinfo
display: :0 screen: 0 API version: 1 Information string: NVIDIA VDPAU Driver Shared Library 375.26 Thu Dec 8 18:03:32 PST 2016 Video surface: name width height types ------------------------------------------- 420 4096 4096 NV12 YV12 422 4096 4096 UYVY YUYV Decoder capabilities: name level macbs width height ---------------------------------------------------- MPEG1 0 65536 4032 4048 MPEG2_SIMPLE 3 65536 4032 4048 MPEG2_MAIN 3 65536 4032 4048 H264_BASELINE 41 65536 4032 4080 H264_MAIN 41 65536 4032 4080 H264_HIGH 41 65536 4032 4080 VC1_SIMPLE 1 8190 2048 2048 VC1_MAIN 2 8190 2048 2048 VC1_ADVANCED 4 8190 2048 2048 MPEG4_PART2_SP 3 8192 2048 2048 MPEG4_PART2_ASP 5 8192 2048 2048 DIVX4_QMOBILE 0 8192 2048 2048 DIVX4_MOBILE 0 8192 2048 2048 DIVX4_HOME_THEATER 0 8192 2048 2048 DIVX4_HD_1080P 0 8192 2048 2048 DIVX5_QMOBILE 0 8192 2048 2048 DIVX5_MOBILE 0 8192 2048 2048 DIVX5_HOME_THEATER 0 8192 2048 2048 DIVX5_HD_1080P 0 8192 2048 2048 H264_CONSTRAINED_BASELINE 41 65536 4032 4080 H264_EXTENDED 41 65536 4032 4080 H264_PROGRESSIVE_HIGH 41 65536 4032 4080 H264_CONSTRAINED_HIGH 41 65536 4032 4080 H264_HIGH_444_PREDICTIVE 41 65536 4032 4080 HEVC_MAIN --- not supported --- HEVC_MAIN_10 --- not supported --- HEVC_MAIN_STILL --- not supported --- HEVC_MAIN_12 --- not supported --- HEVC_MAIN_444 --- not supported --- Output surface: name width height nat types ---------------------------------------------------- B8G8R8A8 16384 16384 y Y8U8V8A8 V8U8Y8A8 A4I4 I4A4 A8I8 I8A8 R10G10B10A2 16384 16384 y Y8U8V8A8 V8U8Y8A8 A4I4 I4A4 A8I8 I8A8 Bitmap surface: name width height ------------------------------ B8G8R8A8 16384 16384 R8G8B8A8 16384 16384 R10G10B10A2 16384 16384 B10G10R10A2 16384 16384 A8 16384 16384 Video mixer: feature name sup ------------------------------------ DEINTERLACE_TEMPORAL y DEINTERLACE_TEMPORAL_SPATIAL y INVERSE_TELECINE y NOISE_REDUCTION y SHARPNESS y LUMA_KEY y HIGH QUALITY SCALING - L1 y HIGH QUALITY SCALING - L2 - HIGH QUALITY SCALING - L3 - HIGH QUALITY SCALING - L4 - HIGH QUALITY SCALING - L5 - HIGH QUALITY SCALING - L6 - HIGH QUALITY SCALING - L7 - HIGH QUALITY SCALING - L8 - HIGH QUALITY SCALING - L9 - parameter name sup min max ----------------------------------------------------- VIDEO_SURFACE_WIDTH y 1 4096 VIDEO_SURFACE_HEIGHT y 1 4096 CHROMA_TYPE y LAYERS y 0 4 attribute name sup min max ----------------------------------------------------- BACKGROUND_COLOR y CSC_MATRIX y NOISE_REDUCTION_LEVEL y 0.00 1.00 SHARPNESS_LEVEL y -1.00 1.00 LUMA_KEY_MIN_LUMA y LUMA_KEY_MAX_LUMA yvainfo
vainfo libva info: VA-API version 0.39.0 libva info: va_getDriverName() returns 0 libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/nvidia_drv_video.so libva info: Found init function __vaDriverInit_0_39 libva info: va_openDriver() returns 0 vainfo: VA-API version: 0.39 (libva 1.7.0) vainfo: Driver version: Splitted-Desktop Systems VDPAU backend for VA-API - 0.7.4 vainfo: Supported profile and entrypoints VAProfileMPEG2Simple : VAEntrypointVLD VAProfileMPEG2Main : VAEntrypointVLD VAProfileMPEG4Simple : VAEntrypointVLD VAProfileMPEG4AdvancedSimple : VAEntrypointVLD VAProfileH264Baseline : VAEntrypointVLD VAProfileH264Main : VAEntrypointVLD VAProfileH264High : VAEntrypointVLD VAProfileVC1Simple : VAEntrypointVLD VAProfileVC1Main : VAEntrypointVLD VAProfileVC1Advanced : VAEntrypointVLD
