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authorKristian Høgsberg <krh@bitplanet.net>2014-03-28 00:33:54 -0700
committerKristian Høgsberg <krh@bitplanet.net>2014-04-01 12:27:13 -0700
commitf54f5891be24eea2af2d1c9864a3f74c1e7648fc (patch)
treece4d2e4b2f463f51a6f96265f6018c15a34b2234 /src/gbm
parent7c379ebe173b43e6ee76bc37a122aa4642bdf43e (diff)
gbm: Add gbm_bo_get_fd()
Add gbm function to get a DMA-BUF file descriptor for a gbm bo. Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
Diffstat (limited to 'src/gbm')
-rw-r--r--src/gbm/backends/dri/gbm_dri.c16
-rw-r--r--src/gbm/main/gbm.c17
-rw-r--r--src/gbm/main/gbm.h3
-rw-r--r--src/gbm/main/gbmint.h1
4 files changed, 37 insertions, 0 deletions
diff --git a/src/gbm/backends/dri/gbm_dri.c b/src/gbm/backends/dri/gbm_dri.c
index acf6b246af0..a674036bf6f 100644
--- a/src/gbm/backends/dri/gbm_dri.c
+++ b/src/gbm/backends/dri/gbm_dri.c
@@ -361,6 +361,21 @@ gbm_dri_bo_write(struct gbm_bo *_bo, const void *buf, size_t count)
return 0;
}
+static int
+gbm_dri_bo_get_fd(struct gbm_bo *_bo)
+{
+ struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
+ struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
+ int fd;
+
+ if (bo->image == NULL)
+ return -1;
+
+ dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_FD, &fd);
+
+ return fd;
+}
+
static void
gbm_dri_bo_destroy(struct gbm_bo *_bo)
{
@@ -696,6 +711,7 @@ dri_device_create(int fd)
dri->base.base.bo_import = gbm_dri_bo_import;
dri->base.base.is_format_supported = gbm_dri_is_format_supported;
dri->base.base.bo_write = gbm_dri_bo_write;
+ dri->base.base.bo_get_fd = gbm_dri_bo_get_fd;
dri->base.base.bo_destroy = gbm_dri_bo_destroy;
dri->base.base.destroy = dri_destroy;
dri->base.base.surface_create = gbm_dri_surface_create;
diff --git a/src/gbm/main/gbm.c b/src/gbm/main/gbm.c
index 30785a66a4d..ad5208ca136 100644
--- a/src/gbm/main/gbm.c
+++ b/src/gbm/main/gbm.c
@@ -230,6 +230,23 @@ gbm_bo_get_handle(struct gbm_bo *bo)
return bo->handle;
}
+/** Get a DMA-BUF file descriptor for the buffer object
+ *
+ * This function creates a DMA-BUF (also known as PRIME) file descriptor
+ * handle for the buffer object. Eeach call to gbm_bo_get_fd() returns a new
+ * file descriptor and the caller is responsible for closing the file
+ * descriptor.
+
+ * \param bo The buffer object
+ * \return Returns a file descriptor referring to the underlying buffer
+ */
+GBM_EXPORT int
+gbm_bo_get_fd(struct gbm_bo *bo)
+{
+ return bo->gbm->bo_get_fd(bo);
+}
+
+
/** Write data into the buffer object
*
* If the buffer object was created with the GBM_BO_USE_WRITE flag,
diff --git a/src/gbm/main/gbm.h b/src/gbm/main/gbm.h
index 9d2a0308766..9e0c7705ea8 100644
--- a/src/gbm/main/gbm.h
+++ b/src/gbm/main/gbm.h
@@ -256,6 +256,9 @@ union gbm_bo_handle
gbm_bo_get_handle(struct gbm_bo *bo);
int
+gbm_bo_get_fd(struct gbm_bo *bo);
+
+int
gbm_bo_write(struct gbm_bo *bo, const void *buf, size_t count);
void
diff --git a/src/gbm/main/gbmint.h b/src/gbm/main/gbmint.h
index 4baf8e3d3d1..31345e6f6de 100644
--- a/src/gbm/main/gbmint.h
+++ b/src/gbm/main/gbmint.h
@@ -69,6 +69,7 @@ struct gbm_device {
struct gbm_bo *(*bo_import)(struct gbm_device *gbm, uint32_t type,
void *buffer, uint32_t usage);
int (*bo_write)(struct gbm_bo *bo, const void *buf, size_t data);
+ int (*bo_get_fd)(struct gbm_bo *bo);
void (*bo_destroy)(struct gbm_bo *bo);
struct gbm_surface *(*surface_create)(struct gbm_device *gbm,