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Sebastian Dröge authoredSebastian Dröge authored
gstvideoflip.c 40.76 KiB
/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2003> David Schleef <ds@schleef.org>
* Copyright (C) <2010> Sebastian Dröge <sebastian.droege@collabora.co.uk>
* Copyright (C) <2011> Youness Alaoui <youness.alaoui@collabora.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/*
* This file was (probably) generated from gstvideoflip.c,
* gstvideoflip.c,v 1.7 2003/11/08 02:48:59 dschleef Exp
*/
/**
* SECTION:element-videoflip
*
* Flips and rotates video.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch-1.0 videotestsrc ! videoflip method=clockwise ! videoconvert ! ximagesink
* ]| This pipeline flips the test image 90 degrees clockwise.
* </refsect2>
*
* Last reviewed on 2010-04-18 (0.10.22)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstvideoflip.h"
#include <string.h>
#include <gst/gst.h>
#include <gst/video/video.h>
/* GstVideoFlip properties */
enum
{
PROP_0,
PROP_METHOD
/* FILL ME */
};
#define PROP_METHOD_DEFAULT GST_VIDEO_FLIP_METHOD_IDENTITY
GST_DEBUG_CATEGORY_STATIC (video_flip_debug);
#define GST_CAT_DEFAULT video_flip_debug
static GstStaticPadTemplate gst_video_flip_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ AYUV, " "ARGB, BGRA, ABGR, RGBA, Y444, xRGB, RGBx, xBGR, BGRx, "
"RGB, BGR, I420, YV12, IYUV, YUY2, UYVY, YVYU, NV12, NV21, "
"GRAY8, GRAY16_BE, GRAY16_LE }"))
);
static GstStaticPadTemplate gst_video_flip_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ AYUV, "
"ARGB, BGRA, ABGR, RGBA, Y444, xRGB, RGBx, xBGR, BGRx, "
"RGB, BGR, I420, YV12, IYUV, YUY2, UYVY, YVYU, NV12, NV21, "
"GRAY8, GRAY16_BE, GRAY16_LE }"))
);
#define GST_TYPE_VIDEO_FLIP_METHOD (gst_video_flip_method_get_type())
static const GEnumValue video_flip_methods[] = {
{GST_VIDEO_FLIP_METHOD_IDENTITY, "Identity (no rotation)", "none"},
{GST_VIDEO_FLIP_METHOD_90R, "Rotate clockwise 90 degrees", "clockwise"},
{GST_VIDEO_FLIP_METHOD_180, "Rotate 180 degrees", "rotate-180"},
{GST_VIDEO_FLIP_METHOD_90L, "Rotate counter-clockwise 90 degrees",
"counterclockwise"},
{GST_VIDEO_FLIP_METHOD_HORIZ, "Flip horizontally", "horizontal-flip"},
{GST_VIDEO_FLIP_METHOD_VERT, "Flip vertically", "vertical-flip"},
{GST_VIDEO_FLIP_METHOD_TRANS,
"Flip across upper left/lower right diagonal", "upper-left-diagonal"},
{GST_VIDEO_FLIP_METHOD_OTHER,
"Flip across upper right/lower left diagonal", "upper-right-diagonal"},
{0, NULL, NULL},
};
static GType
gst_video_flip_method_get_type (void)
{
static GType video_flip_method_type = 0;
if (!video_flip_method_type) {
video_flip_method_type = g_enum_register_static ("GstVideoFlipMethod",
video_flip_methods);
}
return video_flip_method_type;
}
#define gst_video_flip_parent_class parent_class
G_DEFINE_TYPE (GstVideoFlip, gst_video_flip, GST_TYPE_VIDEO_FILTER);
static GstCaps *
gst_video_flip_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps, GstCaps * filter)
{
GstVideoFlip *videoflip = GST_VIDEO_FLIP (trans);
GstCaps *ret;
gint width, height, i;
ret = gst_caps_copy (caps);
for (i = 0; i < gst_caps_get_size (ret); i++) {
GstStructure *structure = gst_caps_get_structure (ret, i);
gint par_n, par_d;
if (gst_structure_get_int (structure, "width", &width) &&
gst_structure_get_int (structure, "height", &height)) {
switch (videoflip->method) {
case GST_VIDEO_FLIP_METHOD_90R:
case GST_VIDEO_FLIP_METHOD_90L:
case GST_VIDEO_FLIP_METHOD_TRANS:
case GST_VIDEO_FLIP_METHOD_OTHER:
gst_structure_set (structure, "width", G_TYPE_INT, height, "height", G_TYPE_INT, width, NULL);
if (gst_structure_get_fraction (structure, "pixel-aspect-ratio",
&par_n, &par_d)) {
if (par_n != 1 || par_d != 1) {
GValue val = { 0, };
g_value_init (&val, GST_TYPE_FRACTION);
gst_value_set_fraction (&val, par_d, par_n);
gst_structure_set_value (structure, "pixel-aspect-ratio", &val);
g_value_unset (&val);
}
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
case GST_VIDEO_FLIP_METHOD_180:
case GST_VIDEO_FLIP_METHOD_HORIZ:
case GST_VIDEO_FLIP_METHOD_VERT:
gst_structure_set (structure, "width", G_TYPE_INT, width,
"height", G_TYPE_INT, height, NULL);
break;
default:
g_assert_not_reached ();
break;
}
}
}
GST_DEBUG_OBJECT (videoflip, "transformed %" GST_PTR_FORMAT " to %"
GST_PTR_FORMAT, caps, ret);
if (filter) {
GstCaps *intersection;
GST_DEBUG_OBJECT (videoflip, "Using filter caps %" GST_PTR_FORMAT, filter);
intersection =
gst_caps_intersect_full (filter, ret, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (ret);
ret = intersection;
GST_DEBUG_OBJECT (videoflip, "Intersection %" GST_PTR_FORMAT, ret);
}
return ret;
}
static void
gst_video_flip_planar_yuv (GstVideoFlip * videoflip, GstVideoFrame * dest,
const GstVideoFrame * src)
{
gint x, y;
guint8 const *s;
guint8 *d;
gint src_y_stride, src_u_stride, src_v_stride;
gint src_y_height, src_u_height, src_v_height;
gint src_y_width, src_u_width, src_v_width;
gint dest_y_stride, dest_u_stride, dest_v_stride;
gint dest_y_height, dest_u_height, dest_v_height;
gint dest_y_width, dest_u_width, dest_v_width;
src_y_stride = GST_VIDEO_FRAME_PLANE_STRIDE (src, 0);
src_u_stride = GST_VIDEO_FRAME_PLANE_STRIDE (src, 1);
src_v_stride = GST_VIDEO_FRAME_PLANE_STRIDE (src, 2);
dest_y_stride = GST_VIDEO_FRAME_PLANE_STRIDE (dest, 0);
dest_u_stride = GST_VIDEO_FRAME_PLANE_STRIDE (dest, 1);
dest_v_stride = GST_VIDEO_FRAME_PLANE_STRIDE (dest, 2);
src_y_width = GST_VIDEO_FRAME_COMP_WIDTH (src, 0);
src_u_width = GST_VIDEO_FRAME_COMP_WIDTH (src, 1);
src_v_width = GST_VIDEO_FRAME_COMP_WIDTH (src, 2);
dest_y_width = GST_VIDEO_FRAME_COMP_WIDTH (dest, 0);
dest_u_width = GST_VIDEO_FRAME_COMP_WIDTH (dest, 1);
dest_v_width = GST_VIDEO_FRAME_COMP_WIDTH (dest, 2);
src_y_height = GST_VIDEO_FRAME_COMP_HEIGHT (src, 0);
src_u_height = GST_VIDEO_FRAME_COMP_HEIGHT (src, 1);
src_v_height = GST_VIDEO_FRAME_COMP_HEIGHT (src, 2);
dest_y_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 0);
dest_u_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 1);
dest_v_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 2);
switch (videoflip->method) {
case GST_VIDEO_FLIP_METHOD_90R:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - x) * src_y_stride + y];
}
}
/* Flip U */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[(src_u_height - 1 - x) * src_u_stride + y];
}
}
/* Flip V */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 2);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 2);
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[(src_v_height - 1 - x) * src_v_stride + y];
}
}
break;
case GST_VIDEO_FLIP_METHOD_90L:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[x * src_y_stride + (src_y_width - 1 - y)];
}
}
/* Flip U */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[x * src_u_stride + (src_u_width - 1 - y)];
}
}
/* Flip V */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 2);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 2);
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[x * src_v_stride + (src_v_width - 1 - y)];
}
} break;
case GST_VIDEO_FLIP_METHOD_180:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - y) * src_y_stride + (src_y_width - 1 - x)];
}
}
/* Flip U */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[(src_u_height - 1 - y) * src_u_stride + (src_u_width - 1 - x)];
}
}
/* Flip V */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 2);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 2);
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[(src_v_height - 1 - y) * src_v_stride + (src_v_width - 1 - x)];
}
}
break;
case GST_VIDEO_FLIP_METHOD_HORIZ:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[y * src_y_stride + (src_y_width - 1 - x)];
}
}
/* Flip U */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[y * src_u_stride + (src_u_width - 1 - x)];
}
}
/* Flip V */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 2);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 2);
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[y * src_v_stride + (src_v_width - 1 - x)];
}
}
break;
case GST_VIDEO_FLIP_METHOD_VERT:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - y) * src_y_stride + x];
}
}
/* Flip U */ s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[(src_u_height - 1 - y) * src_u_stride + x];
}
}
/* Flip V */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 2);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 2);
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[(src_v_height - 1 - y) * src_v_stride + x];
}
}
break;
case GST_VIDEO_FLIP_METHOD_TRANS:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] = s[x * src_y_stride + y];
}
}
/* Flip U */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] = s[x * src_u_stride + y];
}
}
/* Flip V */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 2);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 2);
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_v_stride + x] = s[x * src_v_stride + y];
}
}
break;
case GST_VIDEO_FLIP_METHOD_OTHER:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - x) * src_y_stride + (src_y_width - 1 - y)];
}
}
/* Flip U */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_u_height; y++) {
for (x = 0; x < dest_u_width; x++) {
d[y * dest_u_stride + x] =
s[(src_u_height - 1 - x) * src_u_stride + (src_u_width - 1 - y)];
}
}
/* Flip V */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 2);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 2);
for (y = 0; y < dest_v_height; y++) {
for (x = 0; x < dest_v_width; x++) {
d[y * dest_v_stride + x] =
s[(src_v_height - 1 - x) * src_v_stride + (src_v_width - 1 - y)]; }
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
g_assert_not_reached ();
break;
default:
g_assert_not_reached ();
break;
}
}
static void
gst_video_flip_semi_planar_yuv (GstVideoFlip * videoflip, GstVideoFrame * dest,
const GstVideoFrame * src)
{
gint x, y;
guint8 const *s;
guint8 *d;
gint s_off, d_off;
gint src_y_stride, src_uv_stride;
gint src_y_height, src_uv_height;
gint src_y_width, src_uv_width;
gint dest_y_stride, dest_uv_stride;
gint dest_y_height, dest_uv_height;
gint dest_y_width, dest_uv_width;
src_y_stride = GST_VIDEO_FRAME_PLANE_STRIDE (src, 0);
src_uv_stride = GST_VIDEO_FRAME_PLANE_STRIDE (src, 1);
dest_y_stride = GST_VIDEO_FRAME_PLANE_STRIDE (dest, 0);
dest_uv_stride = GST_VIDEO_FRAME_PLANE_STRIDE (dest, 1);
src_y_width = GST_VIDEO_FRAME_COMP_WIDTH (src, 0);
src_uv_width = GST_VIDEO_FRAME_COMP_WIDTH (src, 1);
dest_y_width = GST_VIDEO_FRAME_COMP_WIDTH (dest, 0);
dest_uv_width = GST_VIDEO_FRAME_COMP_WIDTH (dest, 1);
src_y_height = GST_VIDEO_FRAME_COMP_HEIGHT (src, 0);
src_uv_height = GST_VIDEO_FRAME_COMP_HEIGHT (src, 1);
dest_y_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 0);
dest_uv_height = GST_VIDEO_FRAME_COMP_HEIGHT (dest, 1);
switch (videoflip->method) {
case GST_VIDEO_FLIP_METHOD_90R:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - x) * src_y_stride + y];
}
}
/* Flip UV */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_uv_height; y++) {
for (x = 0; x < dest_uv_width; x++) {
d_off = y * dest_uv_stride + x * 2;
s_off = (src_uv_height - 1 - x) * src_uv_stride + y * 2;
d[d_off] = s[s_off];
d[d_off + 1] = s[s_off + 1];
}
}
break;
case GST_VIDEO_FLIP_METHOD_90L: /* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[x * src_y_stride + (src_y_width - 1 - y)];
}
}
/* Flip UV */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_uv_height; y++) {
for (x = 0; x < dest_uv_width; x++) {
d_off = y * dest_uv_stride + x * 2;
s_off = x * src_uv_stride + (src_uv_width - 1 - y) * 2;
d[d_off] = s[s_off];
d[d_off + 1] = s[s_off + 1];
}
}
break;
case GST_VIDEO_FLIP_METHOD_180:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - y) * src_y_stride + (src_y_width - 1 - x)];
}
}
/* Flip UV */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_uv_height; y++) {
for (x = 0; x < dest_uv_width; x++) {
d_off = y * dest_uv_stride + x * 2;
s_off = (src_uv_height - 1 - y) * src_uv_stride + (src_uv_width - 1 -
x) * 2;
d[d_off] = s[s_off];
d[d_off + 1] = s[s_off + 1];
}
}
break;
case GST_VIDEO_FLIP_METHOD_HORIZ:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[y * src_y_stride + (src_y_width - 1 - x)];
}
}
/* Flip UV */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_uv_height; y++) {
for (x = 0; x < dest_uv_width; x++) {
d_off = y * dest_uv_stride + x * 2;
s_off = y * src_uv_stride + (src_uv_width - 1 - x) * 2;
d[d_off] = s[s_off];
d[d_off + 1] = s[s_off + 1];
}
}
break;
case GST_VIDEO_FLIP_METHOD_VERT:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0); for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - y) * src_y_stride + x];
}
}
/* Flip UV */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_uv_height; y++) {
for (x = 0; x < dest_uv_width; x++) {
d_off = y * dest_uv_stride + x * 2;
s_off = (src_uv_height - 1 - y) * src_uv_stride + x * 2;
d[d_off] = s[s_off];
d[d_off + 1] = s[s_off + 1];
}
}
break;
case GST_VIDEO_FLIP_METHOD_TRANS:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] = s[x * src_y_stride + y];
}
}
/* Flip UV */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_uv_height; y++) {
for (x = 0; x < dest_uv_width; x++) {
d_off = y * dest_uv_stride + x * 2;
s_off = x * src_uv_stride + y * 2;
d[d_off] = s[s_off];
d[d_off + 1] = s[s_off + 1];
}
}
case GST_VIDEO_FLIP_METHOD_OTHER:
/* Flip Y */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
for (y = 0; y < dest_y_height; y++) {
for (x = 0; x < dest_y_width; x++) {
d[y * dest_y_stride + x] =
s[(src_y_height - 1 - x) * src_y_stride + (src_y_width - 1 - y)];
}
}
/* Flip UV */
s = GST_VIDEO_FRAME_PLANE_DATA (src, 1);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 1);
for (y = 0; y < dest_uv_height; y++) {
for (x = 0; x < dest_uv_width; x++) {
d_off = y * dest_uv_stride + x * 2;
s_off = (src_uv_height - 1 - x) * src_uv_stride + (src_uv_width - 1 -
y) * 2;
d[d_off] = s[s_off];
d[d_off + 1] = s[s_off + 1];
}
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
g_assert_not_reached ();
break;
default:
g_assert_not_reached ();
break;
}
}
static void
gst_video_flip_packed_simple (GstVideoFlip * videoflip, GstVideoFrame * dest,
const GstVideoFrame * src)
{
gint x, y, z;
guint8 const *s;
guint8 *d;
gint sw = GST_VIDEO_FRAME_WIDTH (src);
gint sh = GST_VIDEO_FRAME_HEIGHT (src);
gint dw = GST_VIDEO_FRAME_WIDTH (dest);
gint dh = GST_VIDEO_FRAME_HEIGHT (dest);
gint src_stride, dest_stride;
gint bpp;
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
src_stride = GST_VIDEO_FRAME_PLANE_STRIDE (src, 0);
dest_stride = GST_VIDEO_FRAME_PLANE_STRIDE (dest, 0);
/* This is only true for non-subsampled formats! */
bpp = GST_VIDEO_FRAME_COMP_PSTRIDE (src, 0);
switch (videoflip->method) {
case GST_VIDEO_FLIP_METHOD_90R:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
for (z = 0; z < bpp; z++) {
d[y * dest_stride + x * bpp + z] =
s[(sh - 1 - x) * src_stride + y * bpp + z];
}
}
}
break;
case GST_VIDEO_FLIP_METHOD_90L:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
for (z = 0; z < bpp; z++) {
d[y * dest_stride + x * bpp + z] =
s[x * src_stride + (sw - 1 - y) * bpp + z];
}
}
}
break;
case GST_VIDEO_FLIP_METHOD_180:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
for (z = 0; z < bpp; z++) {
d[y * dest_stride + x * bpp + z] =
s[(sh - 1 - y) * src_stride + (sw - 1 - x) * bpp + z];
}
}
}
break;
case GST_VIDEO_FLIP_METHOD_HORIZ:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
for (z = 0; z < bpp; z++) {
d[y * dest_stride + x * bpp + z] =
s[y * src_stride + (sw - 1 - x) * bpp + z];
}
}
}
break;
case GST_VIDEO_FLIP_METHOD_VERT:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
for (z = 0; z < bpp; z++) {
d[y * dest_stride + x * bpp + z] =
s[(sh - 1 - y) * src_stride + x * bpp + z];
} }
}
break;
case GST_VIDEO_FLIP_METHOD_TRANS:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
for (z = 0; z < bpp; z++) {
d[y * dest_stride + x * bpp + z] = s[x * src_stride + y * bpp + z];
}
}
}
break;
case GST_VIDEO_FLIP_METHOD_OTHER:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x++) {
for (z = 0; z < bpp; z++) {
d[y * dest_stride + x * bpp + z] =
s[(sh - 1 - x) * src_stride + (sw - 1 - y) * bpp + z];
}
}
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
g_assert_not_reached ();
break;
default:
g_assert_not_reached ();
break;
}
}
static void
gst_video_flip_y422 (GstVideoFlip * videoflip, GstVideoFrame * dest,
const GstVideoFrame * src)
{
gint x, y;
guint8 const *s;
guint8 *d;
gint sw = GST_VIDEO_FRAME_WIDTH (src);
gint sh = GST_VIDEO_FRAME_HEIGHT (src);
gint dw = GST_VIDEO_FRAME_WIDTH (dest);
gint dh = GST_VIDEO_FRAME_HEIGHT (dest);
gint src_stride, dest_stride;
gint bpp;
gint y_offset;
gint u_offset;
gint v_offset;
gint y_stride;
s = GST_VIDEO_FRAME_PLANE_DATA (src, 0);
d = GST_VIDEO_FRAME_PLANE_DATA (dest, 0);
src_stride = GST_VIDEO_FRAME_PLANE_STRIDE (src, 0);
dest_stride = GST_VIDEO_FRAME_PLANE_STRIDE (dest, 0);
y_offset = GST_VIDEO_FRAME_COMP_OFFSET (src, 0);
u_offset = GST_VIDEO_FRAME_COMP_OFFSET (src, 1);
v_offset = GST_VIDEO_FRAME_COMP_OFFSET (src, 2);
y_stride = GST_VIDEO_FRAME_COMP_PSTRIDE (src, 0);
bpp = y_stride;
switch (videoflip->method) {
case GST_VIDEO_FLIP_METHOD_90R:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_y = (y & ~1);
u = s[(sh - 1 - x) * src_stride + even_y * bpp + u_offset];
if (x + 1 < dw)
u = (s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + u_offset]
+ u) >> 1;
v = s[(sh - 1 - x) * src_stride + even_y * bpp + v_offset];
if (x + 1 < dw)
v = (s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + v_offset]
+ v) >> 1;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[(sh - 1 - x) * src_stride + y * bpp + y_offset];
if (x + 1 < dw)
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(sh - 1 - (x + 1)) * src_stride + y * bpp + y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_90L:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_y = ((sw - 1 - y) & ~1);
u = s[x * src_stride + even_y * bpp + u_offset];
if (x + 1 < dw)
u = (s[(x + 1) * src_stride + even_y * bpp + u_offset] + u) >> 1;
v = s[x * src_stride + even_y * bpp + v_offset];
if (x + 1 < dw)
v = (s[(x + 1) * src_stride + even_y * bpp + v_offset] + v) >> 1;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[x * src_stride + (sw - 1 - y) * bpp + y_offset];
if (x + 1 < dw)
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(x + 1) * src_stride + (sw - 1 - y) * bpp + y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_180:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_x = ((sw - 1 - x) & ~1);
u = (s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset] +
s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset]) / 2;
v = (s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset] +
s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[(sh - 1 - y) * src_stride + (sw - 1 - x) * bpp + y_offset];
if (x + 1 < dw)
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(sh - 1 - y) * src_stride + (sw - 1 - (x + 1)) * bpp +
y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_HORIZ: for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_x = ((sw - 1 - x) & ~1);
u = (s[y * src_stride + even_x * bpp + u_offset] +
s[y * src_stride + even_x * bpp + u_offset]) / 2;
v = (s[y * src_stride + even_x * bpp + v_offset] +
s[y * src_stride + even_x * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[y * src_stride + (sw - 1 - x) * bpp + y_offset];
if (x + 1 < dw)
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[y * src_stride + (sw - 1 - (x + 1)) * bpp + y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_VERT:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_x = (x & ~1);
u = (s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset] +
s[(sh - 1 - y) * src_stride + even_x * bpp + u_offset]) / 2;
v = (s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset] +
s[(sh - 1 - y) * src_stride + even_x * bpp + v_offset]) / 2;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[(sh - 1 - y) * src_stride + x * bpp + y_offset];
if (x + 1 < dw)
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(sh - 1 - y) * src_stride + (x + 1) * bpp + y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_TRANS:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_y = (y & ~1);
u = s[x * src_stride + even_y * bpp + u_offset];
if (x + 1 < dw)
u = (s[(x + 1) * src_stride + even_y * bpp + u_offset] + u) >> 1;
v = s[x * src_stride + even_y * bpp + v_offset];
if (x + 1 < dw)
v = (s[(x + 1) * src_stride + even_y * bpp + v_offset] + v) >> 1;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[x * src_stride + y * bpp + y_offset];
if (x + 1 < dw)
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(x + 1) * src_stride + y * bpp + y_offset];
}
}
break; case GST_VIDEO_FLIP_METHOD_OTHER:
for (y = 0; y < dh; y++) {
for (x = 0; x < dw; x += 2) {
guint8 u;
guint8 v;
/* u/v must be calculated using the offset of the even column */
gint even_y = ((sw - 1 - y) & ~1);
u = s[(sh - 1 - x) * src_stride + even_y * bpp + u_offset];
if (x + 1 < dw)
u = (s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + u_offset]
+ u) >> 1;
v = s[(sh - 1 - x) * src_stride + even_y * bpp + v_offset];
if (x + 1 < dw)
v = (s[(sh - 1 - (x + 1)) * src_stride + even_y * bpp + v_offset]
+ v) >> 1;
d[y * dest_stride + x * bpp + u_offset] = u;
d[y * dest_stride + x * bpp + v_offset] = v;
d[y * dest_stride + x * bpp + y_offset] =
s[(sh - 1 - x) * src_stride + (sw - 1 - y) * bpp + y_offset];
if (x + 1 < dw)
d[y * dest_stride + (x + 1) * bpp + y_offset] =
s[(sh - 1 - (x + 1)) * src_stride + (sw - 1 - y) * bpp +
y_offset];
}
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
g_assert_not_reached ();
break;
default:
g_assert_not_reached ();
break;
}
}
static gboolean
gst_video_flip_set_info (GstVideoFilter * vfilter, GstCaps * incaps,
GstVideoInfo * in_info, GstCaps * outcaps, GstVideoInfo * out_info)
{
GstVideoFlip *vf = GST_VIDEO_FLIP (vfilter);
gboolean ret = FALSE;
vf->process = NULL;
if (GST_VIDEO_INFO_FORMAT (in_info) != GST_VIDEO_INFO_FORMAT (out_info))
goto invalid_caps;
/* Check that they are correct */
switch (vf->method) {
case GST_VIDEO_FLIP_METHOD_90R:
case GST_VIDEO_FLIP_METHOD_90L:
case GST_VIDEO_FLIP_METHOD_TRANS:
case GST_VIDEO_FLIP_METHOD_OTHER:
if ((in_info->width != out_info->height) ||
(in_info->height != out_info->width)) {
GST_ERROR_OBJECT (vf, "we are inverting width and height but caps "
"are not correct : %dx%d to %dx%d", in_info->width,
in_info->height, out_info->width, out_info->height);
goto beach;
}
break;
case GST_VIDEO_FLIP_METHOD_IDENTITY:
break;
case GST_VIDEO_FLIP_METHOD_180:
case GST_VIDEO_FLIP_METHOD_HORIZ:
case GST_VIDEO_FLIP_METHOD_VERT: if ((in_info->width != out_info->width) ||
(in_info->height != out_info->height)) {
GST_ERROR_OBJECT (vf, "we are keeping width and height but caps "
"are not correct : %dx%d to %dx%d", in_info->width,
in_info->height, out_info->width, out_info->height);
goto beach;
}
break;
default:
g_assert_not_reached ();
break;
}
ret = TRUE;
switch (GST_VIDEO_INFO_FORMAT (in_info)) {
case GST_VIDEO_FORMAT_I420:
case GST_VIDEO_FORMAT_YV12:
case GST_VIDEO_FORMAT_Y444:
vf->process = gst_video_flip_planar_yuv;
break;
case GST_VIDEO_FORMAT_YUY2:
case GST_VIDEO_FORMAT_UYVY:
case GST_VIDEO_FORMAT_YVYU:
vf->process = gst_video_flip_y422;
break;
case GST_VIDEO_FORMAT_AYUV:
case GST_VIDEO_FORMAT_ARGB:
case GST_VIDEO_FORMAT_ABGR:
case GST_VIDEO_FORMAT_RGBA:
case GST_VIDEO_FORMAT_BGRA:
case GST_VIDEO_FORMAT_xRGB:
case GST_VIDEO_FORMAT_xBGR:
case GST_VIDEO_FORMAT_RGBx:
case GST_VIDEO_FORMAT_BGRx:
case GST_VIDEO_FORMAT_RGB:
case GST_VIDEO_FORMAT_BGR:
case GST_VIDEO_FORMAT_GRAY8:
case GST_VIDEO_FORMAT_GRAY16_BE:
case GST_VIDEO_FORMAT_GRAY16_LE:
vf->process = gst_video_flip_packed_simple;
break;
case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_NV21:
vf->process = gst_video_flip_semi_planar_yuv;
break;
default:
break;
}
beach:
return ret && (vf->process != NULL);
invalid_caps:
GST_ERROR_OBJECT (vf, "Invalid caps: %" GST_PTR_FORMAT " -> %" GST_PTR_FORMAT,
incaps, outcaps);
return FALSE;
}
static void
gst_video_flip_before_transform (GstBaseTransform * trans, GstBuffer * in)
{
GstVideoFlip *videoflip = GST_VIDEO_FLIP (trans);
GstClockTime timestamp, stream_time;
timestamp = GST_BUFFER_TIMESTAMP (in);
stream_time =
gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME, timestamp);
GST_DEBUG_OBJECT (videoflip, "sync to %" GST_TIME_FORMAT, GST_TIME_ARGS (timestamp));
if (GST_CLOCK_TIME_IS_VALID (stream_time))
gst_object_sync_values (GST_OBJECT (videoflip), stream_time);
}
static GstFlowReturn
gst_video_flip_transform_frame (GstVideoFilter * vfilter,
GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
GstVideoFlip *videoflip = GST_VIDEO_FLIP (vfilter);
if (G_UNLIKELY (videoflip->process == NULL))
goto not_negotiated;
GST_LOG_OBJECT (videoflip, "videoflip: flipping (%s)",
video_flip_methods[videoflip->method].value_nick);
GST_OBJECT_LOCK (videoflip);
videoflip->process (videoflip, out_frame, in_frame);
GST_OBJECT_UNLOCK (videoflip);
return GST_FLOW_OK;
not_negotiated:
{
GST_ERROR_OBJECT (videoflip, "Not negotiated yet");
return GST_FLOW_NOT_NEGOTIATED;
}
}
static gboolean
gst_video_flip_src_event (GstBaseTransform * trans, GstEvent * event)
{
GstVideoFlip *vf = GST_VIDEO_FLIP (trans);
gdouble new_x, new_y, x, y;
GstStructure *structure;
gboolean ret;
GstVideoInfo *out_info = &GST_VIDEO_FILTER (trans)->out_info;
GST_DEBUG_OBJECT (vf, "handling %s event", GST_EVENT_TYPE_NAME (event));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_NAVIGATION:
event =
GST_EVENT (gst_mini_object_make_writable (GST_MINI_OBJECT (event)));
structure = (GstStructure *) gst_event_get_structure (event);
if (gst_structure_get_double (structure, "pointer_x", &x) &&
gst_structure_get_double (structure, "pointer_y", &y)) {
GST_DEBUG_OBJECT (vf, "converting %fx%f", x, y);
switch (vf->method) {
case GST_VIDEO_FLIP_METHOD_90R:
new_x = y;
new_y = out_info->width - x;
break;
case GST_VIDEO_FLIP_METHOD_90L:
new_x = out_info->height - y;
new_y = x;
break;
case GST_VIDEO_FLIP_METHOD_OTHER:
new_x = out_info->height - y;
new_y = out_info->width - x;
break;
case GST_VIDEO_FLIP_METHOD_TRANS:
new_x = y;
new_y = x;
break;
case GST_VIDEO_FLIP_METHOD_180:
new_x = out_info->width - x; new_y = out_info->height - y;
break;
case GST_VIDEO_FLIP_METHOD_HORIZ:
new_x = out_info->width - x;
new_y = y;
break;
case GST_VIDEO_FLIP_METHOD_VERT:
new_x = x;
new_y = out_info->height - y;
break;
default:
new_x = x;
new_y = y;
break;
}
GST_DEBUG_OBJECT (vf, "to %fx%f", new_x, new_y);
gst_structure_set (structure, "pointer_x", G_TYPE_DOUBLE, new_x,
"pointer_y", G_TYPE_DOUBLE, new_y, NULL);
}
break;
default:
break;
}
ret = GST_BASE_TRANSFORM_CLASS (parent_class)->src_event (trans, event);
return ret;
}
static void
gst_video_flip_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVideoFlip *videoflip = GST_VIDEO_FLIP (object);
switch (prop_id) {
case PROP_METHOD:
{
GstVideoFlipMethod method;
method = g_value_get_enum (value);
GST_OBJECT_LOCK (videoflip);
if (method != videoflip->method) {
GstBaseTransform *btrans = GST_BASE_TRANSFORM (videoflip);
GST_DEBUG_OBJECT (videoflip, "Changing method from %s to %s",
video_flip_methods[videoflip->method].value_nick,
video_flip_methods[method].value_nick);
videoflip->method = method;
GST_OBJECT_UNLOCK (videoflip);
gst_base_transform_set_passthrough (btrans,
method == GST_VIDEO_FLIP_METHOD_IDENTITY);
gst_base_transform_reconfigure_src (btrans);
} else {
GST_OBJECT_UNLOCK (videoflip);
}
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_video_flip_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{ GstVideoFlip *videoflip = GST_VIDEO_FLIP (object);
switch (prop_id) {
case PROP_METHOD:
g_value_set_enum (value, videoflip->method);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_video_flip_class_init (GstVideoFlipClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBaseTransformClass *trans_class = (GstBaseTransformClass *) klass;
GstVideoFilterClass *vfilter_class = (GstVideoFilterClass *) klass;
GST_DEBUG_CATEGORY_INIT (video_flip_debug, "videoflip", 0, "videoflip");
gobject_class->set_property = gst_video_flip_set_property;
gobject_class->get_property = gst_video_flip_get_property;
g_object_class_install_property (gobject_class, PROP_METHOD,
g_param_spec_enum ("method", "method", "method",
GST_TYPE_VIDEO_FLIP_METHOD, PROP_METHOD_DEFAULT,
GST_PARAM_CONTROLLABLE | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
gst_element_class_set_static_metadata (gstelement_class, "Video flipper",
"Filter/Effect/Video",
"Flips and rotates video", "David Schleef <ds@schleef.org>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&gst_video_flip_sink_template));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&gst_video_flip_src_template));
trans_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_video_flip_transform_caps);
trans_class->before_transform =
GST_DEBUG_FUNCPTR (gst_video_flip_before_transform);
trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_flip_src_event);
vfilter_class->set_info = GST_DEBUG_FUNCPTR (gst_video_flip_set_info);
vfilter_class->transform_frame =
GST_DEBUG_FUNCPTR (gst_video_flip_transform_frame);
}
static void
gst_video_flip_init (GstVideoFlip * videoflip)
{
videoflip->method = PROP_METHOD_DEFAULT;
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (videoflip), TRUE);
}