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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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "gstopencvutils.h"
static gboolean
gst_opencv_get_ipl_depth_and_channels (GstStructure * structure,
gint * ipldepth, gint * channels, GError ** err)
{
gint depth, bpp;
if (!gst_structure_get_int (structure, "depth", &depth) ||
!gst_structure_get_int (structure, "bpp", &bpp)) {
g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
"No depth/bpp in caps");
return FALSE;
}
if (depth != bpp) {
g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
"Depth and bpp should be equal");
return FALSE;
}
if (gst_structure_has_name (structure, "video/x-raw-rgb")) {
*channels = 3;
} else if (gst_structure_has_name (structure, "video/x-raw-gray")) {
*channels = 1;
} else {
g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
"Unsupported caps %s", gst_structure_get_name (structure));
return FALSE;
}
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;
}
gboolean
gst_opencv_parse_iplimage_params_from_structure (GstStructure * structure,
gint * width, gint * height, gint * ipldepth, gint * channels,
GError ** err)
{
if (!gst_opencv_get_ipl_depth_and_channels (structure, ipldepth, channels,
err)) {
return FALSE;
}
if (!gst_structure_get_int (structure, "width", width) ||
!gst_structure_get_int (structure, "height", height)) {
g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
"No width/height in caps");
return FALSE;
}
return TRUE;
}
gboolean
gst_opencv_parse_iplimage_params_from_caps (GstCaps * caps, gint * width,
gint * height, gint * ipldepth, gint * channels, GError ** err)
{
return
gst_opencv_parse_iplimage_params_from_structure (gst_caps_get_structure
(caps, 0), width, height, ipldepth, channels, err);
}
GstCaps *
gst_opencv_caps_from_cv_image_type (int cv_type)
{
GstCaps *caps = gst_caps_new_empty ();
switch (cv_type) {
case CV_8UC1:
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_GRAY8));
break;
case CV_8UC3:
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_RGB));
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_BGR));
break;
case CV_8UC4:
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_RGBx));
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_xRGB));
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_BGRx));
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_xBGR));
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_RGBA));
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_ARGB));
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_BGRA));
gst_caps_append (caps, gst_caps_from_string (GST_VIDEO_CAPS_ABGR));
break;
case CV_16UC1:
gst_caps_append (caps,
gst_caps_from_string (GST_VIDEO_CAPS_GRAY16 ("1234")));
gst_caps_append (caps,
gst_caps_from_string (GST_VIDEO_CAPS_GRAY16 ("4321")));
break;
}
return caps;
}
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