meta-agl-profile-graphical/recipes-graphics/wayland/weston/0017-compositor-drm-introduce-drm_get_dmafd_from_view.patch

   1 From 020508b35b2bf6c89d62961eb95e2f81d6381ab5 Mon Sep 17 00:00:00 2001
   2 From: Veeresh Kadasani <external.vkadasani@jp.adit-jv.com>
   3 Date: Mon, 29 Jul 2019 17:07:00 +0900
   4 Subject: [PATCH 2/3] compositor-drm: introduce drm_get_dmafd_from_view
   5
   6 This API enables to get dmafd from weston_view
   7
   8 Signed-off-by: Veeresh Kadasani <external.vkadasani@jp.adit-jv.com>
   9 ---
  10  libweston/compositor-drm.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++
  11  libweston/compositor-drm.h |  7 ++++++
  12  2 files changed, 64 insertions(+)
  13
  14 diff --git a/libweston/compositor-drm.c b/libweston/compositor-drm.c
  15 index 26a480c..2b99db5 100644
  16 --- a/libweston/compositor-drm.c
  17 +++ b/libweston/compositor-drm.c
  18 @@ -5420,6 +5420,62 @@ drm_output_set_seat(struct weston_output *base,
  19  }
  20
  21  static int
  22 +drm_get_dma_fd_from_view(struct weston_output *base,
  23 +                          struct weston_view *ev)
  24 +{
  25 +       struct drm_backend *b = to_drm_backend(base->compositor);
  26 +       struct weston_buffer *buffer = ev->surface->buffer_ref.buffer;
  27 +       struct gbm_bo *bo;
  28 +       struct drm_fb *current;
  29 +       struct linux_dmabuf_buffer *dmabuf;
  30 +       bool is_opaque = drm_view_is_opaque(ev);
  31 +       uint32_t format;
  32 +       int fd, ret;
  33 +
  34 +       if(!buffer) {
  35 +               weston_log("buffer is NULL\n");
  36 +               return -1;
  37 +       }
  38 +
  39 +       if(dmabuf = linux_dmabuf_buffer_get(buffer->resource)) {
  40 +               current = drm_fb_get_from_dmabuf(dmabuf, b, is_opaque);
  41 +               if (!current)
  42 +               {
  43 +                       fprintf(stderr, "failed to get drm_fb from dmabuf\n");
  44 +                       return -1;
  45 +               }
  46 +       }
  47 +       else if(ev->surface->buffer_ref.buffer->legacy_buffer) {
  48 +               bo = gbm_bo_import(b->gbm, GBM_BO_IMPORT_WL_BUFFER,
  49 +                                  buffer->resource, GBM_BO_USE_SCANOUT);
  50 +               if (!bo) {
  51 +                       weston_log("failed to get gbm_bo\n");
  52 +                       return -1;
  53 +               }
  54 +               current = drm_fb_get_from_bo(bo, b, is_opaque, BUFFER_CLIENT);
  55 +
  56 +               if (!current) {
  57 +                       weston_log("failed to get drm_fb from bo\n");
  58 +                       return -1;
  59 +               }
  60 +
  61 +       }
  62 +       else {
  63 +               weston_log("Buffer is not supported\n");
  64 +               return -1;
  65 +       }
  66 +
  67 +       ret = drmPrimeHandleToFD(b->drm.fd, current->handles[0],
  68 +                                DRM_CLOEXEC, &fd);
  69 +       free(current);
  70 +       if (ret) {
  71 +               weston_log("failed to create prime fd for front buffer\n");
  72 +               return -1;
  73 +       }
  74 +
  75 +       return fd;
  76 +}
  77 +static int
  78  drm_output_init_gamma_size(struct drm_output *output)
  79  {
  80         struct drm_backend *backend = to_drm_backend(output->base.compositor);
  81 @@ -6696,6 +6752,7 @@ static const struct weston_drm_output_api api = {
  82         drm_output_set_mode,
  83         drm_output_set_gbm_format,
  84         drm_output_set_seat,
  85 +       drm_get_dma_fd_from_view,
  86  };
  87
  88  static struct drm_backend *
  89 diff --git a/libweston/compositor-drm.h b/libweston/compositor-drm.h
  90 index 9c37c15..a82a2a9 100644
  91 --- a/libweston/compositor-drm.h
  92 +++ b/libweston/compositor-drm.h
  93 @@ -78,6 +78,13 @@ struct weston_drm_output_api {
  94          */
  95         void (*set_seat)(struct weston_output *output,
  96                          const char *seat);
  97 +
  98 +        /** Get the dma fd from drm view.
  99 +        *
 100 +         *  The dma fd is got from weston_view.
 101 +        *  Returns fd on success, -1 on failure.
 102 +        */
 103 +       int (*get_dma_fd_from_view)(struct weston_output *output, struct weston_view *view);
 104  };
 105
 106  static inline const struct weston_drm_output_api *
 107 --
 108 2.7.4
 109