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gstreamer/gst/videofilter/gstvideoflip.c
Jan Schmidt 3ab2eeecb8 videoflip: Forward src pad events upstream. 
Fix passing navigation and other events upstream by actually sending them.

Fixes: #633205
2010-10-27 11:59:07 +01:00

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/* 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>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, 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 videotestsrc ! videoflip method=clockwise ! ffmpegcolorspace ! 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/controller/gstcontroller.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_YUV ("AYUV") ";"
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";"
GST_VIDEO_CAPS_ABGR ";" GST_VIDEO_CAPS_RGBA ";"
GST_VIDEO_CAPS_YUV ("Y444") ";"
GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_RGBx ";"
GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_BGRx ";"
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR ";"
GST_VIDEO_CAPS_YUV ("I420") ";"
GST_VIDEO_CAPS_YUV ("YV12") ";" GST_VIDEO_CAPS_YUV ("IYUV")
)
);
static GstStaticPadTemplate gst_video_flip_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("AYUV") ";"
GST_VIDEO_CAPS_ARGB ";" GST_VIDEO_CAPS_BGRA ";"
GST_VIDEO_CAPS_ABGR ";" GST_VIDEO_CAPS_RGBA ";"
GST_VIDEO_CAPS_YUV ("Y444") ";"
GST_VIDEO_CAPS_xRGB ";" GST_VIDEO_CAPS_RGBx ";"
GST_VIDEO_CAPS_xBGR ";" GST_VIDEO_CAPS_BGRx ";"
GST_VIDEO_CAPS_RGB ";" GST_VIDEO_CAPS_BGR ";"
GST_VIDEO_CAPS_YUV ("I420") ";"
GST_VIDEO_CAPS_YUV ("YV12") ";" GST_VIDEO_CAPS_YUV ("IYUV")
)
);
#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;
}
GST_BOILERPLATE (GstVideoFlip, gst_video_flip, GstVideoFilter,
GST_TYPE_VIDEO_FILTER);
static GstCaps *
gst_video_flip_transform_caps (GstBaseTransform * trans,
GstPadDirection direction, GstCaps * caps)
{
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);
return ret;
}
static gboolean
gst_video_flip_get_unit_size (GstBaseTransform * btrans, GstCaps * caps,
guint * size)
{
GstVideoFormat format;
gint width, height;
if (!gst_video_format_parse_caps (caps, &format, &width, &height))
return FALSE;
*size = gst_video_format_get_size (format, width, height);
GST_DEBUG_OBJECT (btrans, "our frame size is %d bytes (%dx%d)", *size,
width, height);
return TRUE;
}
static void
gst_video_flip_planar_yuv (GstVideoFlip * videoflip, guint8 * dest,
const guint8 * src)
{
gint x, y;
guint8 const *s;
guint8 *d;
GstVideoFormat format = videoflip->format;
gint sw = videoflip->from_width;
gint sh = videoflip->from_height;
gint dw = videoflip->to_width;
gint dh = videoflip->to_height;
gint src_y_stride, src_u_stride, src_v_stride;
gint src_y_offset, src_u_offset, src_v_offset;
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_offset, dest_u_offset, dest_v_offset;
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_format_get_row_stride (format, 0, sw);
src_u_stride = gst_video_format_get_row_stride (format, 1, sw);
src_v_stride = gst_video_format_get_row_stride (format, 2, sw);
dest_y_stride = gst_video_format_get_row_stride (format, 0, dw);
dest_u_stride = gst_video_format_get_row_stride (format, 1, dw);
dest_v_stride = gst_video_format_get_row_stride (format, 2, dw);
src_y_offset = gst_video_format_get_component_offset (format, 0, sw, sh);
src_u_offset = gst_video_format_get_component_offset (format, 1, sw, sh);
src_v_offset = gst_video_format_get_component_offset (format, 2, sw, sh);
dest_y_offset = gst_video_format_get_component_offset (format, 0, dw, dh);
dest_u_offset = gst_video_format_get_component_offset (format, 1, dw, dh);
dest_v_offset = gst_video_format_get_component_offset (format, 2, dw, dh);
src_y_width = gst_video_format_get_component_width (format, 0, sw);
src_u_width = gst_video_format_get_component_width (format, 1, sw);
src_v_width = gst_video_format_get_component_width (format, 2, sw);
dest_y_width = gst_video_format_get_component_width (format, 0, dw);
dest_u_width = gst_video_format_get_component_width (format, 1, dw);
dest_v_width = gst_video_format_get_component_width (format, 2, dw);
src_y_height = gst_video_format_get_component_height (format, 0, sh);
src_u_height = gst_video_format_get_component_height (format, 1, sh);
src_v_height = gst_video_format_get_component_height (format, 2, sh);
dest_y_height = gst_video_format_get_component_height (format, 0, dh);
dest_u_height = gst_video_format_get_component_height (format, 1, dh);
dest_v_height = gst_video_format_get_component_height (format, 2, dh);
switch (videoflip->method) {
case GST_VIDEO_FLIP_METHOD_90R:
/* Flip Y */
s = src + src_y_offset;
d = dest + dest_y_offset;
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 = src + src_u_offset;
d = dest + dest_u_offset;
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 = src + src_v_offset;
d = dest + dest_v_offset;
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 = src + src_y_offset;
d = dest + dest_y_offset;
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 = src + src_u_offset;
d = dest + dest_u_offset;
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 = src + src_v_offset;
d = dest + dest_v_offset;
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 = src + src_y_offset;
d = dest + dest_y_offset;
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 = src + src_u_offset;
d = dest + dest_u_offset;
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 = src + src_v_offset;
d = dest + dest_v_offset;
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 = src + src_y_offset;
d = dest + dest_y_offset;
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 = src + src_u_offset;
d = dest + dest_u_offset;
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 = src + src_v_offset;
d = dest + dest_v_offset;
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 = src + src_y_offset;
d = dest + dest_y_offset;
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 = src + src_u_offset;
d = dest + dest_u_offset;
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 = src + src_v_offset;
d = dest + dest_v_offset;
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 = src + src_y_offset;
d = dest + dest_y_offset;
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 = src + src_u_offset;
d = dest + dest_u_offset;
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 = src + src_v_offset;
d = dest + dest_v_offset;
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 = src + src_y_offset;
d = dest + dest_y_offset;
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 = src + src_u_offset;
d = dest + dest_u_offset;
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 = src + src_v_offset;
d = dest + dest_v_offset;
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_packed_simple (GstVideoFlip * videoflip, guint8 * dest,
const guint8 * src)
{
gint x, y, z;
guint8 const *s = src;
guint8 *d = dest;
GstVideoFormat format = videoflip->format;
gint sw = videoflip->from_width;
gint sh = videoflip->from_height;
gint dw = videoflip->to_width;
gint dh = videoflip->to_height;
gint src_stride, dest_stride;
gint bpp;
src_stride = gst_video_format_get_row_stride (format, 0, sw);
dest_stride = gst_video_format_get_row_stride (format, 0, dw);
/* This is only true for non-subsampled formats! */
bpp = gst_video_format_get_pixel_stride (format, 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 gboolean
gst_video_flip_set_caps (GstBaseTransform * btrans, GstCaps * incaps,
GstCaps * outcaps)
{
GstVideoFlip *vf = GST_VIDEO_FLIP (btrans);
GstVideoFormat in_format, out_format;
gboolean ret = FALSE;
vf->process = NULL;
if (!gst_video_format_parse_caps (incaps, &in_format, &vf->from_width,
&vf->from_height)
|| !gst_video_format_parse_caps (outcaps, &out_format, &vf->to_width,
&vf->to_height))
goto invalid_caps;
if (in_format != out_format)
goto invalid_caps;
vf->format = in_format;
/* 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 ((vf->from_width != vf->to_height) ||
(vf->from_height != vf->to_width)) {
GST_ERROR_OBJECT (vf, "we are inverting width and height but caps "
"are not correct : %dx%d to %dx%d", vf->from_width,
vf->from_height, vf->to_width, vf->to_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 ((vf->from_width != vf->to_width) ||
(vf->from_height != vf->to_height)) {
GST_ERROR_OBJECT (vf, "we are keeping width and height but caps "
"are not correct : %dx%d to %dx%d", vf->from_width,
vf->from_height, vf->to_width, vf->to_height);
goto beach;
}
break;
default:
g_assert_not_reached ();
break;
}
ret = TRUE;
switch (vf->format) {
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_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:
vf->process = gst_video_flip_packed_simple;
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 (G_OBJECT (videoflip), stream_time);
}
static GstFlowReturn
gst_video_flip_transform (GstBaseTransform * trans, GstBuffer * in,
GstBuffer * out)
{
GstVideoFlip *videoflip = GST_VIDEO_FLIP (trans);
guint8 *dest;
const guint8 *src;
if (G_UNLIKELY (videoflip->process == NULL))
goto not_negotiated;
src = GST_BUFFER_DATA (in);
dest = GST_BUFFER_DATA (out);
GST_LOG_OBJECT (videoflip, "videoflip: flipping %dx%d to %dx%d (%s)",
videoflip->from_width, videoflip->from_height, videoflip->to_width,
videoflip->to_height, video_flip_methods[videoflip->method].value_nick);
GST_OBJECT_LOCK (videoflip);
videoflip->process (videoflip, dest, src);
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;
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 = vf->to_width - x;
break;
case GST_VIDEO_FLIP_METHOD_90L:
new_x = vf->to_height - y;
new_y = x;
break;
case GST_VIDEO_FLIP_METHOD_OTHER:
new_x = vf->to_height - y;
new_y = vf->to_width - x;
break;
case GST_VIDEO_FLIP_METHOD_TRANS:
new_x = y;
new_y = x;
break;
case GST_VIDEO_FLIP_METHOD_180:
new_x = vf->to_width - x;
new_y = vf->to_height - y;
break;
case GST_VIDEO_FLIP_METHOD_HORIZ:
new_x = vf->to_width - x;
new_y = y;
break;
case GST_VIDEO_FLIP_METHOD_VERT:
new_x = x;
new_y = vf->to_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 (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_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (element_class, "Video flipper",
"Filter/Effect/Video",
"Flips and rotates video", "David Schleef <ds@schleef.org>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_video_flip_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_video_flip_src_template));
}
static void
gst_video_flip_class_init (GstVideoFlipClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstBaseTransformClass *trans_class = (GstBaseTransformClass *) 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));
trans_class->transform_caps =
GST_DEBUG_FUNCPTR (gst_video_flip_transform_caps);
trans_class->set_caps = GST_DEBUG_FUNCPTR (gst_video_flip_set_caps);
trans_class->get_unit_size = GST_DEBUG_FUNCPTR (gst_video_flip_get_unit_size);
trans_class->transform = GST_DEBUG_FUNCPTR (gst_video_flip_transform);
trans_class->before_transform =
GST_DEBUG_FUNCPTR (gst_video_flip_before_transform);
trans_class->src_event = GST_DEBUG_FUNCPTR (gst_video_flip_src_event);
}
static void
gst_video_flip_init (GstVideoFlip * videoflip, GstVideoFlipClass * klass)
{
videoflip->method = PROP_METHOD_DEFAULT;
gst_base_transform_set_passthrough (GST_BASE_TRANSFORM (videoflip), TRUE);
}
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