+ uint32_t format,
+ const uint64_t *modifiers,
+ const unsigned int count);
+#define GBM_BO_IMPORT_WL_BUFFER 0x5501
+#define GBM_BO_IMPORT_EGL_IMAGE 0x5502
+#define GBM_BO_IMPORT_FD 0x5503
+#define GBM_BO_IMPORT_FD_MODIFIER 0x5504
+
+struct gbm_import_fd_data {
+ int fd;
+ uint32_t width;
+ uint32_t height;
+ uint32_t stride;
+ uint32_t format;
+};
+
+struct gbm_import_fd_modifier_data {
+ uint32_t width;
+ uint32_t height;
+ uint32_t format;
+ uint32_t num_fds;
+ int fds[4];
+ int strides[4];
+ int offsets[4];
+ uint64_t modifier;
+};
+
+struct gbm_bo *
+gbm_bo_import(struct gbm_device *gbm, uint32_t type,
+ void *buffer, uint32_t usage);
+
+/**
+ * Flags to indicate the type of mapping for the buffer - these are
+ * passed into gbm_bo_map(). The caller must set the union of all the
+ * flags that are appropriate.
+ *
+ * These flags are independent of the GBM_BO_USE_* creation flags. However,
+ * mapping the buffer may require copying to/from a staging buffer.
+ *
+ * See also: pipe_transfer_usage
+ */
+enum gbm_bo_transfer_flags {
+ /**
+ * Buffer contents read back (or accessed directly) at transfer
+ * create time.
+ */
+ GBM_BO_TRANSFER_READ = (1 << 0),
+ /**
+ * Buffer contents will be written back at unmap time
+ * (or modified as a result of being accessed directly).
+ */
+ GBM_BO_TRANSFER_WRITE = (1 << 1),
+ /**
+ * Read/modify/write
+ */
+ GBM_BO_TRANSFER_READ_WRITE = (GBM_BO_TRANSFER_READ | GBM_BO_TRANSFER_WRITE),
+};
+
+void *
+gbm_bo_map(struct gbm_bo *bo,
+ uint32_t x, uint32_t y, uint32_t width, uint32_t height,
+ uint32_t flags, uint32_t *stride, void **map_data);
+
+void
+gbm_bo_unmap(struct gbm_bo *bo, void *map_data);