139 lines
4.4 KiB
C++
139 lines
4.4 KiB
C++
/* GStreamer
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* Copyright (C) <2010> Thiago Santos <thiago.sousa.santos@collabora.co.uk>
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*
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* gstopencvutils.c: miscellaneous utility functions
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstopencvutils.h"
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#include <opencv2/core/core_c.h>
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gboolean
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gst_opencv_parse_iplimage_params_from_caps (GstCaps * caps, gint * width,
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gint * height, gint * ipldepth, gint * channels, GError ** err)
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{
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GstVideoInfo info;
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gchar *caps_str;
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if (!gst_video_info_from_caps (&info, caps)) {
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caps_str = gst_caps_to_string (caps);
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GST_ERROR ("Failed to get video info from caps %s", caps_str);
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g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
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"Failed to get video info from caps %s", caps_str);
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g_free (caps_str);
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return FALSE;
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}
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return gst_opencv_iplimage_params_from_video_info (&info, width, height,
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ipldepth, channels, err);
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}
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gboolean
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gst_opencv_iplimage_params_from_video_info (GstVideoInfo * info, gint * width,
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gint * height, gint * ipldepth, gint * channels, GError ** err)
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{
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GstVideoFormat format;
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int cv_type;
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format = GST_VIDEO_INFO_FORMAT (info);
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if (!gst_opencv_cv_image_type_from_video_format (format, &cv_type, err)) {
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return FALSE;
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}
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*width = GST_VIDEO_INFO_WIDTH (info);
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*height = GST_VIDEO_INFO_HEIGHT (info);
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*ipldepth = cvIplDepth (cv_type);
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*channels = CV_MAT_CN (cv_type);
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return TRUE;
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}
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gboolean
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gst_opencv_cv_image_type_from_video_format (GstVideoFormat format,
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int * cv_type, GError ** err)
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{
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const gchar *format_str;
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switch (format) {
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case GST_VIDEO_FORMAT_GRAY8:
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*cv_type = CV_8UC1;
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break;
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case GST_VIDEO_FORMAT_RGB:
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case GST_VIDEO_FORMAT_BGR:
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*cv_type = CV_8UC3;
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break;
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case GST_VIDEO_FORMAT_RGBx:
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case GST_VIDEO_FORMAT_xRGB:
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case GST_VIDEO_FORMAT_BGRx:
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case GST_VIDEO_FORMAT_xBGR:
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case GST_VIDEO_FORMAT_RGBA:
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case GST_VIDEO_FORMAT_ARGB:
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case GST_VIDEO_FORMAT_BGRA:
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case GST_VIDEO_FORMAT_ABGR:
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*cv_type = CV_8UC4;
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break;
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case GST_VIDEO_FORMAT_GRAY16_LE:
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case GST_VIDEO_FORMAT_GRAY16_BE:
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*cv_type = CV_16UC1;
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break;
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default:
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format_str = gst_video_format_to_string (format);
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g_set_error (err, GST_CORE_ERROR, GST_CORE_ERROR_NEGOTIATION,
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"Unsupported video format %s", format_str);
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return FALSE;
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}
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return TRUE;
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}
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GstCaps *
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gst_opencv_caps_from_cv_image_type (int cv_type)
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{
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GstCaps *c = gst_caps_new_empty ();
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switch (cv_type) {
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case CV_8UC1:
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("GRAY8")));
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break;
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case CV_8UC3:
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("RGB")));
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGR")));
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break;
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case CV_8UC4:
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("RGBx")));
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("xRGB")));
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGRx")));
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("xBGR")));
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("RGBA")));
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("ARGB")));
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGRA")));
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gst_caps_append (c, gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("ABGR")));
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break;
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case CV_16UC1:
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gst_caps_append (c,
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gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("GRAY16_LE")));
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gst_caps_append (c,
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gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("GRAY16_BE")));
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break;
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}
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return c;
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}
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