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Diffstat (limited to 'doc/outdevs.texi')
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diff --git a/doc/outdevs.texi b/doc/outdevs.texi index a204f3264a..d2ccef216a 100644 --- a/doc/outdevs.texi +++ b/doc/outdevs.texi @@ -149,6 +149,41 @@ ffmpeg -re -i INPUT -vcodec rawvideo -pix_fmt bgra -f fbdev /dev/fb0 See also @url{http://linux-fbdev.sourceforge.net/}, and fbset(1). +@section opengl +OpenGL output device. + +To enable this output device you need to configure FFmpeg with @code{--enable-opengl}. + +Device allows to render to OpenGL context. +Context may be provided by application or default SDL window is created. + +When device renders to external context, application must implement handlers for following messages: +@code{AV_CTL_MESSAGE_CREATE_WINDOW_BUFFER} - create OpenGL context on current thread. +@code{AV_CTL_MESSAGE_PREPARE_WINDOW_BUFFER} - make OpenGL context current. +@code{AV_CTL_MESSAGE_DISPLAY_WINDOW_BUFFER} - swap buffers. +@code{AV_CTL_MESSAGE_DESTROY_WINDOW_BUFFER} - destroy OpenGL context. +Application is also required to inform a device about current resolution by sending @code{AV_DEVICE_WINDOW_RESIZED} message. + +@subsection Options +@table @option + +@item background +Set background color. Black is a default. +@item no_window +Disables default SDL window when set to non-zero value. +Application must provide OpenGL context and both @code{window_size_cb} and @code{window_swap_buffers_cb} callbacks when set. +@item window_title +Set the SDL window title, if not specified default to the filename specified for the output device. +Ignored when @option{no_window} is set. + +@end table + +@subsection Examples +Play a file on SDL window using OpenGL rendering: +@example +ffmpeg -i INPUT -f opengl "window title" +@end example + @section oss OSS (Open Sound System) output device. |