+static int
+get_number_planes(struct gbm_dri_device *dri, __DRIimage *image)
+{
+ int num_planes = 0;
+
+ /* Dumb buffers are single-plane only. */
+ if (!image)
+ return 1;
+
+ dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_NUM_PLANES, &num_planes);
+
+ if (num_planes <= 0)
+ num_planes = 1;
+
+ return num_planes;
+}
+
+static int
+gbm_dri_bo_get_planes(struct gbm_bo *_bo)
+{
+ struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
+ struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
+
+ return get_number_planes(dri, bo->image);
+}
+
+static union gbm_bo_handle
+gbm_dri_bo_get_handle_for_plane(struct gbm_bo *_bo, int plane)
+{
+ struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
+ struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
+ union gbm_bo_handle ret;
+ ret.s32 = -1;
+
+ if (!dri->image || dri->image->base.version < 13 || !dri->image->fromPlanar) {
+ errno = ENOSYS;
+ return ret;
+ }
+
+ if (plane >= get_number_planes(dri, bo->image)) {
+ errno = EINVAL;
+ return ret;
+ }
+
+ /* dumb BOs can only utilize non-planar formats */
+ if (!bo->image) {
+ assert(plane == 0);
+ ret.s32 = bo->handle;
+ return ret;
+ }
+
+ __DRIimage *image = dri->image->fromPlanar(bo->image, plane, NULL);
+ if (image) {
+ dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_HANDLE, &ret.s32);
+ dri->image->destroyImage(image);
+ } else {
+ assert(plane == 0);
+ dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE, &ret.s32);
+ }
+
+ return ret;
+}
+
+static uint32_t
+gbm_dri_bo_get_stride(struct gbm_bo *_bo, int plane)
+{
+ struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
+ struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
+ __DRIimage *image;
+ int stride = 0;
+
+ if (!dri->image || dri->image->base.version < 11 || !dri->image->fromPlanar) {
+ /* Preserve legacy behavior if plane is 0 */
+ if (plane == 0)
+ return _bo->stride;
+
+ errno = ENOSYS;
+ return 0;
+ }
+
+ if (plane >= get_number_planes(dri, bo->image)) {
+ errno = EINVAL;
+ return 0;
+ }
+
+ if (bo->image == NULL) {
+ assert(plane == 0);
+ return _bo->stride;
+ }
+
+ image = dri->image->fromPlanar(bo->image, plane, NULL);
+ if (image) {
+ dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
+ dri->image->destroyImage(image);
+ } else {
+ assert(plane == 0);
+ dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE, &stride);
+ }
+
+ return (uint32_t)stride;
+}
+
+static uint32_t
+gbm_dri_bo_get_offset(struct gbm_bo *_bo, int plane)
+{
+ struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
+ struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
+ int offset = 0;
+
+ /* These error cases do not actually return an error code, as the user
+ * will also fail to obtain the handle/FD from the BO. In that case, the
+ * offset is irrelevant, as they have no buffer to offset into, so
+ * returning 0 is harmless.
+ */
+ if (!dri->image || dri->image->base.version < 13 || !dri->image->fromPlanar)
+ return 0;
+
+ if (plane >= get_number_planes(dri, bo->image))
+ return 0;
+
+ /* Dumb images have no offset */
+ if (bo->image == NULL) {
+ assert(plane == 0);
+ return 0;
+ }
+
+ __DRIimage *image = dri->image->fromPlanar(bo->image, plane, NULL);
+ if (image) {
+ dri->image->queryImage(image, __DRI_IMAGE_ATTRIB_OFFSET, &offset);
+ dri->image->destroyImage(image);
+ } else {
+ dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_OFFSET, &offset);
+ }
+
+ return (uint32_t)offset;
+}
+
+static uint64_t
+gbm_dri_bo_get_modifier(struct gbm_bo *_bo)
+{
+ struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
+ struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
+
+ if (!dri->image || dri->image->base.version < 14) {
+ errno = ENOSYS;
+ return DRM_FORMAT_MOD_INVALID;
+ }
+
+ /* Dumb buffers have no modifiers */
+ if (!bo->image)
+ return DRM_FORMAT_MOD_LINEAR;
+
+ uint64_t ret = 0;
+ int mod;
+ if (!dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_MODIFIER_UPPER,
+ &mod))
+ return DRM_FORMAT_MOD_INVALID;
+
+ ret = (uint64_t)mod << 32;
+
+ if (!dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_MODIFIER_LOWER,
+ &mod))
+ return DRM_FORMAT_MOD_INVALID;
+
+ ret |= (uint64_t)(mod & 0xffffffff);
+
+ return ret;
+}
+