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OMXplayer uses openMAX on the RPi to play videos with hardware acceleration. Compared to using a gstreamer pipe, OMXplayer uses a complete "tunnel-mode", in which the video is piped (after demuxing) into the hardware, all the way down to the display, whereas gstreamer composes the video using the eglgles sink, which uses mem-to-mem copies. So, when playing a locally-stored 1080p video, OMXplayer averages 20% (with peaks up to ~30%, depending on the complexity of the video) CPU, while gstreamer bursts up to 40+% when playing 720p and totally chokes on a 1080p video; all on an non-overclocked RPi-1. Note that we have to depend on rpi-userland. rpi-userland is a GLES/EGL provider, so it can't be selected (as all providers of a virtual package can't). Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> [Thomas: add a depends on BR2_PACKAGE_FFMPEG_ARCH_SUPPORTS.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches