[Mesa-dev] [PATCH v4 7/9] st/va: add headless support, i.e. VA_DISPLAY_DRM

[Christian König]

On 29.10.2015 18:40, Julien Isorce wrote:
> This patch allows to use gallium vaapi without requiring
> a X server running for your second graphic card.
>
> Signed-off-by: Julien Isorce <j.isorce at samsung.com>

Reviewed-by: Christian König <christian.koenig at amd.com>

> ---
>   src/gallium/state_trackers/va/Makefile.am |  9 ++++
>   src/gallium/state_trackers/va/context.c   | 70 ++++++++++++++++++++++++++++---
>   2 files changed, 73 insertions(+), 6 deletions(-)
>
> diff --git a/src/gallium/state_trackers/va/Makefile.am b/src/gallium/state_trackers/va/Makefile.am
> index 2a93a90..348cfe1 100644
> --- a/src/gallium/state_trackers/va/Makefile.am
> +++ b/src/gallium/state_trackers/va/Makefile.am
> @@ -30,6 +30,15 @@ AM_CFLAGS = \
>   	$(VA_CFLAGS) \
>   	-DVA_DRIVER_INIT_FUNC="__vaDriverInit_$(VA_MAJOR)_$(VA_MINOR)"
>   
> +AM_CFLAGS += \
> +	$(GALLIUM_PIPE_LOADER_DEFINES) \
> +	-DPIPE_SEARCH_DIR=\"$(libdir)/gallium-pipe\"
> +
> +if HAVE_GALLIUM_STATIC_TARGETS
> +AM_CFLAGS += \
> +	-DGALLIUM_STATIC_TARGETS=1
> +endif
> +
>   AM_CPPFLAGS = \
>   	-I$(top_srcdir)/include
>   
> diff --git a/src/gallium/state_trackers/va/context.c b/src/gallium/state_trackers/va/context.c
> index a107cc4..bd533c4 100644
> --- a/src/gallium/state_trackers/va/context.c
> +++ b/src/gallium/state_trackers/va/context.c
> @@ -28,7 +28,8 @@
>   
>   #include "pipe/p_screen.h"
>   #include "pipe/p_video_codec.h"
> -
> +#include "pipe-loader/pipe_loader.h"
> +#include "state_tracker/drm_driver.h"
>   #include "util/u_memory.h"
>   #include "util/u_handle_table.h"
>   #include "util/u_video.h"
> @@ -36,6 +37,8 @@
>   
>   #include "va_private.h"
>   
> +#include <va/va_drmcommon.h>
> +
>   static struct VADriverVTable vtable =
>   {
>      &vlVaTerminate,
> @@ -99,6 +102,8 @@ PUBLIC VAStatus
>   VA_DRIVER_INIT_FUNC(VADriverContextP ctx)
>   {
>      vlVaDriver *drv;
> +   int drm_fd;
> +   struct drm_state *drm_info;
>   
>      if (!ctx)
>         return VA_STATUS_ERROR_INVALID_CONTEXT;
> @@ -107,9 +112,56 @@ VA_DRIVER_INIT_FUNC(VADriverContextP ctx)
>      if (!drv)
>         return VA_STATUS_ERROR_ALLOCATION_FAILED;
>   
> -   drv->vscreen = vl_screen_create(ctx->native_dpy, ctx->x11_screen);
> -   if (!drv->vscreen)
> -      goto error_screen;
> +   switch (ctx->display_type) {
> +   case VA_DISPLAY_ANDROID:
> +   case VA_DISPLAY_WAYLAND:
> +      FREE(drv);
> +      return VA_STATUS_ERROR_UNIMPLEMENTED;
> +   case VA_DISPLAY_GLX:
> +   case VA_DISPLAY_X11:
> +      drv->vscreen = vl_screen_create(ctx->native_dpy, ctx->x11_screen);
> +      if (!drv->vscreen)
> +         goto error_screen;
> +      break;
> +   case VA_DISPLAY_DRM:
> +   case VA_DISPLAY_DRM_RENDERNODES: {
> +      drm_info = (struct drm_state *) ctx->drm_state;
> +      if (!drm_info) {
> +         FREE(drv);
> +         return VA_STATUS_ERROR_INVALID_PARAMETER;
> +      }
> +
> +#if GALLIUM_STATIC_TARGETS
> +      drm_fd = drm_info->fd;
> +#else
> +      drm_fd = dup(drm_info->fd);
> +#endif
> +
> +      if (drm_fd < 0) {
> +         FREE(drv);
> +         return VA_STATUS_ERROR_INVALID_PARAMETER;
> +      }
> +
> +      drv->vscreen = CALLOC_STRUCT(vl_screen);
> +      if (!drv->vscreen)
> +         goto error_screen;
> +
> +#if GALLIUM_STATIC_TARGETS
> +      drv->vscreen->pscreen = dd_create_screen(drm_fd);
> +#else
> +      if (pipe_loader_drm_probe_fd(&drv->dev, drm_fd))
> +         drv->vscreen->pscreen = pipe_loader_create_screen(drv->dev, PIPE_SEARCH_DIR);
> +#endif
> +
> +      if (!drv->vscreen->pscreen)
> +         goto error_pipe;
> +
> +      }
> +      break;
> +   default:
> +      FREE(drv);
> +      return VA_STATUS_ERROR_INVALID_DISPLAY;
> +   }
>   
>      drv->pipe = drv->vscreen->pscreen->context_create(drv->vscreen->pscreen,
>                                                        drv->vscreen, 0);
> @@ -145,7 +197,10 @@ error_htab:
>      drv->pipe->destroy(drv->pipe);
>   
>   error_pipe:
> -   vl_screen_destroy(drv->vscreen);
> +   if (ctx->display_type == VA_DISPLAY_GLX || ctx->display_type == VA_DISPLAY_X11)
> +      vl_screen_destroy(drv->vscreen);
> +   else
> +      FREE(drv->vscreen);
>   
>   error_screen:
>      FREE(drv);
> @@ -282,7 +337,10 @@ vlVaTerminate(VADriverContextP ctx)
>      vl_compositor_cleanup_state(&drv->cstate);
>      vl_compositor_cleanup(&drv->compositor);
>      drv->pipe->destroy(drv->pipe);
> -   vl_screen_destroy(drv->vscreen);
> +   if (ctx->display_type == VA_DISPLAY_GLX || ctx->display_type == VA_DISPLAY_X11)
> +      vl_screen_destroy(drv->vscreen);
> +   else
> +      FREE(drv->vscreen);
>      handle_table_destroy(drv->htab);
>      FREE(drv);
>