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From efde8be8052d31a13629160c55f59e3be661a48c Mon Sep 17 00:00:00 2001
From: Kazunori Kobayashi <kkobayas@igel.co.jp>
Date: Fri, 12 Oct 2012 18:33:29 +0900
Subject: [PATCH 20/31] videocrop: set tile boundary offset in caps for T/L
addressing
This change is necessary for cropping the image data that is stored
as tiles in memory. Thease capabilities notify downstream plugins of
the offset to the previous tile boundary.
---
gst/videocrop/gstvideocrop.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/gst/videocrop/gstvideocrop.c b/gst/videocrop/gstvideocrop.c
index da30c1b..dbebcfa 100644
--- a/gst/videocrop/gstvideocrop.c
+++ b/gst/videocrop/gstvideocrop.c
@@ -677,11 +677,23 @@ gst_video_crop_transform_caps (GstBaseTransform * trans,
delta_chroma_offs = 0;
} else if (img_details.packing == VIDEO_CROP_PIXEL_FORMAT_SEMI_PLANAR) {
guint ratio_y_c;
+ GstStructure *structure;
+ gint tile_height;
rowstride = img_details.stride;
/* Y plane / UV plane */
ratio_y_c = img_details.uv_off / (img_details.size - img_details.uv_off);
delta_chroma_offs = rowstride * vcrop->crop_top / ratio_y_c;
+
+ /* set tile boudary for T/L addressing */
+ structure = gst_caps_get_structure (caps, 0);
+ if (gst_structure_get_int (structure, "tile-height", &tile_height)) {
+ gst_structure_set (new_structure, "tile_boundary_y_offset",
+ G_TYPE_INT, vcrop->crop_top % tile_height, NULL);
+
+ gst_structure_set (new_structure, "tile_boundary_c_offset",
+ G_TYPE_INT, vcrop->crop_top / ratio_y_c % tile_height, NULL);
+ }
} else {
rowstride = 0;
delta_chroma_offs = 0;
--
1.7.9.5
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