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-rw-r--r--common/recipes-multimedia/gstreamer/gst-plugins-good/0021-videocrop-support-cropping-interlaced-images.patch99
1 files changed, 99 insertions, 0 deletions
diff --git a/common/recipes-multimedia/gstreamer/gst-plugins-good/0021-videocrop-support-cropping-interlaced-images.patch b/common/recipes-multimedia/gstreamer/gst-plugins-good/0021-videocrop-support-cropping-interlaced-images.patch
new file mode 100644
index 0000000..7d66fe4
--- /dev/null
+++ b/common/recipes-multimedia/gstreamer/gst-plugins-good/0021-videocrop-support-cropping-interlaced-images.patch
@@ -0,0 +1,99 @@
+From b2975883315542cc9beead18a6bfe3bf1dab06b7 Mon Sep 17 00:00:00 2001
+From: Kazunori Kobayashi <kkobayas@igel.co.jp>
+Date: Tue, 16 Oct 2012 16:42:17 +0900
+Subject: [PATCH 21/31] videocrop: support cropping interlaced images
+
+This patch supports it by adjusting the subbuffer offset and
+chroma_byte_offset in caps.
+---
+ gst/videocrop/gstvideocrop.c | 43 ++++++++++++++++++++++++++++++++++++------
+ gst/videocrop/gstvideocrop.h | 2 ++
+ 2 files changed, 39 insertions(+), 6 deletions(-)
+
+diff --git a/gst/videocrop/gstvideocrop.c b/gst/videocrop/gstvideocrop.c
+index dbebcfa..4d2a027 100644
+--- a/gst/videocrop/gstvideocrop.c
++++ b/gst/videocrop/gstvideocrop.c
+@@ -679,20 +679,44 @@ gst_video_crop_transform_caps (GstBaseTransform * trans,
+ guint ratio_y_c;
+ GstStructure *structure;
+ gint tile_height;
++ gboolean interlaced;
++ const gchar *layout;
++
++ structure = gst_caps_get_structure (caps, 0);
++ if (gst_structure_get_boolean (structure, "interlaced", &interlaced) &&
++ (interlaced == TRUE) &&
++ ((layout =
++ gst_structure_get_string (structure, "field-layout")) != NULL)
++ && (strcmp (layout, "sequential") == 0))
++ vcrop->interlaced = TRUE;
++ else
++ vcrop->interlaced = FALSE;
+
+ 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;
++ if (vcrop->interlaced)
++ delta_chroma_offs = rowstride * vcrop->crop_top / ratio_y_c / 2;
++ else
++ 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)) {
++ gint tile_y_offs, tile_c_offs;
++
++ if (vcrop->interlaced) {
++ tile_y_offs = vcrop->crop_top / 2 % tile_height;
++ tile_c_offs = vcrop->crop_top / ratio_y_c / 2 % tile_height;
++ } else {
++ tile_y_offs = vcrop->crop_top % tile_height;
++ tile_c_offs = vcrop->crop_top / ratio_y_c % tile_height;
++ }
++
+ gst_structure_set (new_structure, "tile_boundary_y_offset",
+- G_TYPE_INT, vcrop->crop_top % tile_height, NULL);
++ G_TYPE_INT, tile_y_offs, NULL);
+
+ gst_structure_set (new_structure, "tile_boundary_c_offset",
+- G_TYPE_INT, vcrop->crop_top / ratio_y_c % tile_height, NULL);
++ G_TYPE_INT, tile_c_offs, NULL);
+ }
+ } else {
+ rowstride = 0;
+@@ -830,8 +854,15 @@ gst_video_crop_prepare_output_buffer (GstBaseTransform * trans,
+ sub_offset = (vcrop->crop_top * vcrop->in.stride) +
+ (ROUND_DOWN_2 (vcrop->crop_left) * vcrop->in.bytes_per_pixel);
+ } else if (vcrop->in.packing == VIDEO_CROP_PIXEL_FORMAT_SEMI_PLANAR) {
+- sub_offset = (vcrop->crop_top * vcrop->in.stride) +
+- ROUND_DOWN_2 (vcrop->crop_left);
++ GstStructure *structure;
++
++ structure = gst_caps_get_structure (caps, 0);
++ if (vcrop->interlaced)
++ sub_offset = (vcrop->crop_top / 2 * vcrop->in.stride) +
++ ROUND_DOWN_2 (vcrop->crop_left);
++ else
++ sub_offset = (vcrop->crop_top * vcrop->in.stride) +
++ ROUND_DOWN_2 (vcrop->crop_left);
+ } else {
+ GST_LOG_OBJECT (vcrop,
+ "can't do zero-copy cropping except for packed format");
+diff --git a/gst/videocrop/gstvideocrop.h b/gst/videocrop/gstvideocrop.h
+index 1534b3d..a72cacb 100644
+--- a/gst/videocrop/gstvideocrop.h
++++ b/gst/videocrop/gstvideocrop.h
+@@ -83,6 +83,8 @@ struct _GstVideoCrop
+
+ /* query for rowstride */
+ GstQueryType query_type_stride;
++
++ gboolean interlaced;
+ };
+
+ struct _GstVideoCropClass
+--
+1.7.9.5
+