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Original commit message from CVS: Patch by: Bastien Nocera <hadess at hadess dot net>, Hans de Goede <jwrdegoede at fedoraproject dot org> * configure.ac: * sys/v4l2/Makefile.am: * sys/v4l2/gstv4l2src.c: (gst_v4l2src_get_read): * sys/v4l2/v4l2_calls.c: (gst_v4l2_get_capabilities), (gst_v4l2_fill_lists), (gst_v4l2_open), (gst_v4l2_close), (gst_v4l2_get_norm), (gst_v4l2_set_norm), (gst_v4l2_get_frequency), (gst_v4l2_set_frequency), (gst_v4l2_signal_strength), (gst_v4l2_get_attribute), (gst_v4l2_set_attribute), (gst_v4l2_get_input), (gst_v4l2_set_input): * sys/v4l2/v4l2_calls.h: * sys/v4l2/v4l2src_calls.c: (gst_v4l2_buffer_finalize), (gst_v4l2_buffer_new), (gst_v4l2_buffer_pool_finalize), (gst_v4l2_buffer_pool_new), (gst_v4l2_buffer_pool_activate), (gst_v4l2src_fill_format_list), (gst_v4l2src_probe_caps_for_format_and_size), (gst_v4l2src_probe_caps_for_format), (gst_v4l2src_grab_frame), (gst_v4l2src_set_capture), (gst_v4l2src_capture_init), (gst_v4l2src_capture_start), (gst_v4l2src_capture_stop), (gst_v4l2src_get_nearest_size): Optionally use libv4l to access v4l2 devices. Fixes bug #545033.
140 lines
4.8 KiB
C
140 lines
4.8 KiB
C
/* GStreamer
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*
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* Copyright (C) 2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
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* 2006 Edgard Lima <edgard.lima@indt.org.br>
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*
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* v4l2_calls.h - generic V4L2 calls handling
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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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __V4L2_CALLS_H__
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#define __V4L2_CALLS_H__
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#include "gstv4l2object.h"
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#include "gst/gst-i18n-plugin.h"
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#ifdef HAVE_LIBV4L2
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#include <libv4l2.h>
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#else
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#define v4l2_fd_open(fd, flags) (fd)
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#define v4l2_close close
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#define v4l2_dup dup
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#define v4l2_ioctl ioctl
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#define v4l2_read read
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#define v4l2_mmap mmap
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#define v4l2_munmap munmap
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#endif
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/* simple check whether the device is open */
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#define GST_V4L2_IS_OPEN(v4l2object) \
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(v4l2object->video_fd > 0)
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/* check whether the device is 'active' */
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#define GST_V4L2_IS_ACTIVE(v4l2object) \
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(v4l2object->buffer != NULL)
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#define GST_V4L2_IS_OVERLAY(v4l2object) \
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(v4l2object->vcap.capabilities & V4L2_CAP_VIDEO_OVERLAY)
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/* checks whether the current v4lv4l2object has already been open()'ed or not */
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#define GST_V4L2_CHECK_OPEN(v4l2object) \
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if (!GST_V4L2_IS_OPEN(v4l2object)) \
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{ \
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GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS, \
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(_("Device is not open.")), (NULL)); \
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return FALSE; \
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}
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/* checks whether the current v4lv4l2object is close()'ed or whether it is still open */
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#define GST_V4L2_CHECK_NOT_OPEN(v4l2object) \
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if (GST_V4L2_IS_OPEN(v4l2object)) \
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{ \
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GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS, \
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(_("Device is open.")), (NULL)); \
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return FALSE; \
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}
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/* checks whether the current v4lv4l2object does video overlay */
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#define GST_V4L2_CHECK_OVERLAY(v4l2object) \
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if (!GST_V4L2_IS_OVERLAY(v4l2object)) \
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{ \
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GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS, \
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(NULL), ("Device cannot handle overlay")); \
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return FALSE; \
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}
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/* checks whether we're in capture mode or not */
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#define GST_V4L2_CHECK_ACTIVE(v4l2object) \
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if (!GST_V4L2_IS_ACTIVE(v4l2object)) \
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{ \
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GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS, \
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(NULL), ("Device is not in streaming mode")); \
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return FALSE; \
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}
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/* checks whether we're out of capture mode or not */
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#define GST_V4L2_CHECK_NOT_ACTIVE(v4l2object) \
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if (GST_V4L2_IS_ACTIVE(v4l2object)) \
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{ \
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GST_ELEMENT_ERROR (v4l2object->element, RESOURCE, SETTINGS, \
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(NULL), ("Device is in streaming mode")); \
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return FALSE; \
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}
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/* open/close the device */
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gboolean gst_v4l2_open (GstV4l2Object *v4l2object);
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gboolean gst_v4l2_close (GstV4l2Object *v4l2object);
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/* norm/input/output */
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gboolean gst_v4l2_get_norm (GstV4l2Object *v4l2object,
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v4l2_std_id *norm);
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gboolean gst_v4l2_set_norm (GstV4l2Object *v4l2object,
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v4l2_std_id norm);
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gboolean gst_v4l2_get_input (GstV4l2Object * v4l2object,
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gint * input);
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gboolean gst_v4l2_set_input (GstV4l2Object * v4l2object,
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gint input);
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#if 0 /* output not handled by now */
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gboolean gst_v4l2_get_output (GstV4l2Object *v4l2object,
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gint *output);
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gboolean gst_v4l2_set_output (GstV4l2Object *v4l2object,
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gint output);
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#endif /* #if 0 - output not handled by now */
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/* frequency control */
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gboolean gst_v4l2_get_frequency (GstV4l2Object *v4l2object,
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gint tunernum,
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gulong *frequency);
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gboolean gst_v4l2_set_frequency (GstV4l2Object *v4l2object,
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gint tunernum,
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gulong frequency);
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gboolean gst_v4l2_signal_strength (GstV4l2Object *v4l2object,
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gint tunernum,
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gulong *signal);
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/* attribute control */
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gboolean gst_v4l2_get_attribute (GstV4l2Object *v4l2object,
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int attribute,
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int *value);
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gboolean gst_v4l2_set_attribute (GstV4l2Object *v4l2object,
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int attribute,
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const int value);
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gboolean gst_v4l2_get_capabilities (GstV4l2Object * v4l2object);
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#endif /* __V4L2_CALLS_H__ */
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