[Cin] mediacodec and qsv not really hwaccels ?

[Terje J. Hanssen]

Den 23.09.2024 23:53, skrev Andrew Randrianasulu via Cin:
> I tried to trivially add qsv/mediacodec decode to cinelerra-gg, but 
> discovered that I can't use it like vaapi/vdpau/cuda because (?) 
> qsv/mediacodec not listed in
>
> ffmpeg/libavcodec/hwconfig.h
> and (for h264) in
> ffmpeg/libavcodec/h264dec.c
>
> so on decoding I get (in termux, cingg compiled with system ffmpeg)
>
>
> Decoder h264 does not support device type mediacodec.
> HW device init failed, using SW decode. 
> file:/data/data/com.termux/files/home/20210419_055507A.mp4
> err: Operation not permitted

You use a supported Intel (i)gpu?
https://en.wikipedia.org/wiki/Intel_Quick_Sync_Video#Hardware_decoding_and_encoding

>
> yet ffmpeg -hwaccel show
>
> ~/cinelerra/cinelerra-5.1 $ ffmpeg -hwaccels
>  ffmpeg version 6.1.2 Copyright (c) 2000-2024 the FFmpeg developers
> built with Android (12027248, +pgo, +bolt, +lto, +mlgo, based on 
> r522817) clang version 18.0.1 
> (https://android.googlesource.com/toolchain/llvm-project 
> d8003a456d14a3deb8054cdaa529ffbf02d9b262)     configuration: 
> --arch=aarch64 --as=aarch64-linux-android-clang 
> --cc=aarch64-linux-android-clang --cxx=aarch64-linux-android-clang++ 
> --nm=llvm-nm 
> --pkg-config=/home/builder/.termux-build/_cache/android-r27-api-24-v1/bin/pkg-config 
> --strip=llvm-strip --cross-prefix=aarch64-linux-android- 
> --disable-indevs --disable-outdevs --enable-indev=lavfi 
> --disable-static --disable-symver --enable-cross-compile 
> --enable-gnutls --enable-gpl --enable-version3 --enable-jni 
> --enable-lcms2 --enable-libaom --enable-libass --enable-libbluray 
> --enable-libdav1d --enable-libfontconfig --enable-libfreetype 
> --enable-libfribidi --enable-libgme --enable-libharfbuzz 
> --enable-libmp3lame --enable-libopencore-amrnb 
> --enable-libopencore-amrwb --enable-libopenmpt --enable-libopus 
> --enable-librav1e --enable-libsoxr --enable-libsrt --enable-libssh 
> --enable-libsvtav1 --enable-libtheora --enable-libv4l2 
> --enable-libvidstab --enable-libvmaf --enable-libvo-amrwbenc 
> --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 
> --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg 
> --enable-mediacodec --enable-opencl --enable-shared 
> --prefix=/data/data/com.termux/files/usr --target-os=android 
> --extra-libs=-landroid-glob --disable-vulkan --enable-neon 
> --disable-libfdk-aac                   libavutil      58. 29.100 / 58. 
> 29.100
> libavcodec     60. 31.102 / 60. 31.102
> libavformat    60. 16.100 / 60. 16.100
>  libavdevice    60.  3.100 / 60.  3.100
> libavfilter     9. 12.100 /  9. 12.100
> libswscale      7.  5.100 /  7.  5.100
> libswresample   4. 12.100 /  4. 12.100
> libpostproc    57.  3.100 / 57.  3.100
> Hardware acceleration methods:
> opencl                                             mediacodec
>
> ===
>
> is it oversight or some more fundamental limitation?
>