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videocrop: Add NV12/NV21 support

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=687964
This commit is contained in:
Nicolas Dufresne 2012-11-09 13:27:16 +01:00 committed by Olivier Crête
parent 8a4a6b770f
commit e111068f7b
2 changed files with 51 additions and 2 deletions

50
gst/videocrop/gstvideocrop.c
View file

@ -80,7 +80,7 @@ enum
#define VIDEO_CROP_CAPS \
GST_VIDEO_CAPS_MAKE ("{ RGBx, xRGB, BGRx, xBGR, " \
"RGBA, ARGB, BGRA, ABGR, RGB, BGR, AYUV, YUY2, " \
"YVYU, UYVY, I420, RGB16, RGB15, GRAY8 }")
"YVYU, UYVY, I420, RGB16, RGB15, GRAY8, NV12, NV21 }")
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
@ -373,6 +373,47 @@ gst_video_crop_transform_planar (GstVideoCrop * vcrop,
}
}
static void
gst_video_crop_transform_semi_planar (GstVideoCrop * vcrop,
GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
gint width, height;
guint8 *y_out, *uv_out;
guint8 *y_in, *uv_in;
guint i, dx;
width = GST_VIDEO_FRAME_WIDTH (out_frame);
height = GST_VIDEO_FRAME_HEIGHT (out_frame);
/* Y plane */
y_in = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0);
y_out = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0);
/* UV plane */
uv_in = GST_VIDEO_FRAME_PLANE_DATA (in_frame, 1);
uv_out = GST_VIDEO_FRAME_PLANE_DATA (out_frame, 1);
y_in += vcrop->crop_top * GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0) +
vcrop->crop_left;
dx = width;
for (i = 0; i < height; ++i) {
memcpy (y_out, y_in, dx);
y_in += GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0);
y_out += GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0);
}
uv_in += (vcrop->crop_top / 2) * GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 1);
uv_in += GST_ROUND_DOWN_2 (vcrop->crop_left);
dx = GST_ROUND_UP_2 (width);
for (i = 0; i < GST_ROUND_UP_2 (height) / 2; i++) {
memcpy (uv_out, uv_in, dx);
uv_in += GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 1);
uv_out += GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 1);
}
}
static GstFlowReturn
gst_video_crop_transform_frame (GstVideoFilter * vfilter,
GstVideoFrame * in_frame, GstVideoFrame * out_frame)
@ -390,6 +431,9 @@ gst_video_crop_transform_frame (GstVideoFilter * vfilter,
case VIDEO_CROP_PIXEL_FORMAT_PLANAR:
gst_video_crop_transform_planar (vcrop, in_frame, out_frame);
break;
case VIDEO_CROP_PIXEL_FORMAT_SEMI_PLANAR:
gst_video_crop_transform_semi_planar (vcrop, in_frame, out_frame);
break;
default:
g_assert_not_reached ();
}
@ -657,6 +701,10 @@ gst_video_crop_set_info (GstVideoFilter * vfilter, GstCaps * in,
case GST_VIDEO_FORMAT_YV12:
crop->packing = VIDEO_CROP_PIXEL_FORMAT_PLANAR;
break;
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_NV21:
crop->packing = VIDEO_CROP_PIXEL_FORMAT_SEMI_PLANAR;
break;
default:
goto unknown_format;
}

3
gst/videocrop/gstvideocrop.h
View file

@ -38,7 +38,8 @@ G_BEGIN_DECLS
typedef enum {
VIDEO_CROP_PIXEL_FORMAT_PACKED_SIMPLE = 0, /* RGBx, AYUV */
VIDEO_CROP_PIXEL_FORMAT_PACKED_COMPLEX, /* UYVY, YVYU */
VIDEO_CROP_PIXEL_FORMAT_PLANAR /* I420, YV12 */
VIDEO_CROP_PIXEL_FORMAT_PLANAR, /* I420, YV12 */
VIDEO_CROP_PIXEL_FORMAT_SEMI_PLANAR /* NV12, NV21 */
} VideoCropPixelFormat;
typedef struct _GstVideoCropImageDetails GstVideoCropImageDetails;