mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-25 03:01:03 +00:00
96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/*
|
|
* Copyright (C) 2014 Collabora Ltd.
|
|
* Author: Nicolas Dufresne <nicolas.dufresne@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.
|
|
*
|
|
*/
|
|
|
|
#ifndef __V4L2_UTILS_H__
|
|
#define __V4L2_UTILS_H__
|
|
|
|
#include <gst/gst.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define GST_V4L2_ERROR_INIT { NULL, NULL }
|
|
#define GST_V4L2_ERROR(v4l2err,domain,code,msg,dbg) \
|
|
{\
|
|
if (v4l2err) { \
|
|
gchar *_msg = _gst_element_error_printf msg; \
|
|
v4l2err->error = g_error_new_literal (GST_##domain##_ERROR, \
|
|
GST_##domain##_ERROR_##code, _msg); \
|
|
g_free (_msg); \
|
|
v4l2err->dbg_message = _gst_element_error_printf dbg; \
|
|
v4l2err->file = __FILE__; \
|
|
v4l2err->func = GST_FUNCTION; \
|
|
v4l2err->line = __LINE__; \
|
|
} \
|
|
}
|
|
|
|
/**
|
|
* GST_V4L2_IS_M2M:
|
|
* @_dcaps: The device capabilities
|
|
*
|
|
* Checks if the device caps represent an M2M device. Note that modern M2M
|
|
* devices uses V4L2_CAP_VIDEO_M2M* flag, but legacy uses to set both CAPTURE
|
|
* and OUTPUT flags instead.
|
|
*
|
|
* Returns: %TRUE if this is a M2M device.
|
|
*/
|
|
#define GST_V4L2_IS_M2M(_dcaps) \
|
|
(((_dcaps) & (V4L2_CAP_VIDEO_M2M | V4L2_CAP_VIDEO_M2M_MPLANE)) ||\
|
|
(((_dcaps) & \
|
|
(V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VIDEO_CAPTURE_MPLANE)) && \
|
|
((_dcaps) & \
|
|
(V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_VIDEO_OUTPUT_MPLANE))))
|
|
|
|
|
|
typedef struct _GstV4l2Iterator GstV4l2Iterator;
|
|
typedef struct _GstV4l2Error GstV4l2Error;
|
|
|
|
struct _GstV4l2Iterator
|
|
{
|
|
const gchar *device_path;
|
|
const gchar *device_name;
|
|
const gchar *sys_path;
|
|
};
|
|
|
|
struct _GstV4l2Error
|
|
{
|
|
GError *error;
|
|
gchar *dbg_message;
|
|
const gchar *file;
|
|
const gchar *func;
|
|
gint line;
|
|
};
|
|
|
|
GstV4l2Iterator * gst_v4l2_iterator_new (void);
|
|
gboolean gst_v4l2_iterator_next (GstV4l2Iterator *it);
|
|
void gst_v4l2_iterator_free (GstV4l2Iterator *it);
|
|
|
|
const gchar * gst_v4l2_iterator_get_device_path (GstV4l2Iterator *it);
|
|
const gchar * gst_v4l2_iterator_get_device_name (GstV4l2Iterator *it);
|
|
const gchar * gst_v4l2_iterator_get_sys_path (GstV4l2Iterator *it);
|
|
|
|
void gst_v4l2_clear_error (GstV4l2Error *error);
|
|
void gst_v4l2_error (gpointer element, GstV4l2Error *error);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __V4L2_UTILS_H__ */
|
|
|
|
|