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/* GStreamer
* Copyright (C) <2010> Thiago Santos <thiago.sousa.santos@collabora.co.uk>
*
* gstopencvutils.c: miscellaneous utility functions
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstopencvutils.h"
#include <opencv2/core/core_c.h>
gboolean
gst_opencv_parse_iplimage_params_from_caps (GstCaps * caps, gint * width,
gint * height, gint * ipldepth, gint * channels, GError ** err)
{
GstVideoInfo info;
if (!gst_video_info_from_caps (&info, caps)) {
GST_ERROR ("Failed to get the videoinfo from caps");
g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
"No width/heighti/depth/channels in caps");
return FALSE;
}
return gst_opencv_iplimage_params_from_video_info (&info, width, height,
ipldepth, channels, err);
}
gboolean
gst_opencv_iplimage_params_from_video_info (GstVideoInfo * info, gint * width,
gint * height, gint * ipldepth, gint * channels, GError ** err)
{
gint depth = 0;
guint i;
*width = GST_VIDEO_INFO_WIDTH (info);
*height = GST_VIDEO_INFO_HEIGHT (info);
if (GST_VIDEO_INFO_IS_RGB (info))
*channels = 3;
else if (GST_VIDEO_INFO_IS_GRAY (info))
*channels = 1;
else {
g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
"Unsupported video format %s",
gst_video_format_to_string (GST_VIDEO_INFO_FORMAT (info)));
return FALSE;
}
for (i = 0; i < GST_VIDEO_INFO_N_COMPONENTS (info); i++)
depth += GST_VIDEO_INFO_COMP_DEPTH (info, i);
if (depth / *channels == 8) {
/* TODO signdness? */
*ipldepth = IPL_DEPTH_8U;
} else if (depth / *channels == 16) {
*ipldepth = IPL_DEPTH_16U;
} else {
g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
"Unsupported depth/channels %d/%d", depth, *channels);
return FALSE;
}
return TRUE;
}
GstCaps *
gst_opencv_caps_from_cv_image_type (int cv_type)
{
GstCaps *c = gst_caps_new_empty ();
switch (cv_type) {
case CV_8UC1:
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("GRAY8")));
break;
case CV_8UC3:
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("RGB")));
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGR")));
break;
case CV_8UC4:
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("RGBx")));
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("xRGB")));
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGRx")));
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("xBGR")));
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("RGBA")));
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("ARGB")));
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGRA")));
gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("ABGR")));
break;
case CV_16UC1:
gst_caps_append (c,
gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("GRAY16_LE")));
gst_caps_append (c,
gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("GRAY16_BE")));
break;
}
return c;
}
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