Add intel drmbuf

Signed-off-by: fukubayashi.akio <fukubayashi.akio@genetec.co.jp>

1 files changed, 46 insertions, 0 deletions

diff --git a/waltham-transmitter/waltham-renderer/waltham-renderer.c b/waltham-transmitter/waltham-renderer/waltham-renderer.c
index 12b8d84..47ba9ce 100644
--- a/waltham-transmitter/waltham-renderer/waltham-renderer.c
+++ b/waltham-transmitter/waltham-renderer/waltham-renderer.c
@@ -243,7 +243,53 @@ static void waltham_renderer_repaint_output(struct weston_transmitter_output *ou
 	allocator = gst_dmabuf_allocator_new();
 	mem = gst_dmabuf_allocator_alloc(allocator, output->renderer->dmafd,
 					 stride * output->renderer->surface_height);
+
+#if defined(__x86_64__)
+	/* per-texture constants (Intel X-major tile layout) */
+	uint tileW = 512;	/* 32 * 16B OWord colomns */
+	uint tileH = 8;		/* 8 Rows */
+	uint tilePitch = 8;	/* Pitch = 8tiles */
+	uint tileSize = tileW * tileH;
+	uint widthInTiles = (stride + tileW-1) / tileW;
+
+	/* convert linear format to tile format */
+	GstMapInfo infosrc, infodst;
+	GstMemory *memsrc = gst_memory_copy(mem, 0, stride * output->renderer->surface_height);
+	if (gst_memory_map(memsrc, &infosrc, GST_MAP_READ) == FALSE)
+		return;
+
+	GstMemory *memdst = gst_allocator_alloc(NULL, stride * output->renderer->surface_height, NULL);
+	if (gst_memory_map(memdst, &infodst, GST_MAP_WRITE) == FALSE) {
+		gst_memory_unmap(memsrc, &infosrc);
+		return;
+	}
+
+	int y = 0, x = 0;
+	uint tileX, tileY, inTileX, inTileY, idx;
+	for (y = 0; y < output->renderer->surface_height; y++) {
+		for (x = 0; x < stride; x++) {
+			// actual addressing
+			tileX = x / tileW;
+			tileY = y / tileH;
+			inTileX = x % tileW;
+			inTileY = y % tileH;
+			idx = (tileY * widthInTiles + tileX) * (tileSize)
+			  + (inTileY * tileW) + (inTileX);
+
+			if (idx >= stride * output->renderer->surface_height) {
+				fprintf(stderr, "index not in scope: idx=%d x=%d y=%d \n",idx, x, y);
+				break;
+			}
+			infodst.data[y * stride + x] = infosrc.data[idx];
+		}
+	}
+
+	gst_memory_unmap(memsrc, &infosrc);
+	gst_memory_unmap(memdst, &infodst);
+	gst_buffer_append_memory(gstbuffer, memdst);
+#else
 	gst_buffer_append_memory(gstbuffer, mem);
+#endif
 	gst_buffer_add_video_meta_full(gstbuffer,
 				       GST_VIDEO_FRAME_FLAG_NONE,
 				       GST_VIDEO_FORMAT_BGRx,