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418a4940a8
With years the amount of ifdef have grown up and we are not even sure if the old code path compiles. Each time we need to update the v4l2 framework to add the new feature, we break compilation on older kernel. With exception of two controls in the video orientation control, this patch get rid of all ifdef by including the latest version of videodev2.h inside GStreamer. Fixes https://bugzilla.gnome.org/show_bug.cgi?id=723446
309 lines
12 KiB
C
309 lines
12 KiB
C
/* GStreamer
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*
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* Copyright (C) 2001-2002 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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* gstv4l2object.h: base class for V4L2 elements
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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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#ifndef __GST_V4L2_OBJECT_H__
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#define __GST_V4L2_OBJECT_H__
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#include "ext/videodev2.h"
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#include <gst/gst.h>
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#include <gst/base/gstpushsrc.h>
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#include <gst/video/video.h>
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typedef struct _GstV4l2Object GstV4l2Object;
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typedef struct _GstV4l2ObjectClassHelper GstV4l2ObjectClassHelper;
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typedef struct _GstV4l2Xv GstV4l2Xv;
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#include <gstv4l2bufferpool.h>
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/* size of v4l2 buffer pool in streaming case */
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#define GST_V4L2_MAX_BUFFERS 16
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#define GST_V4L2_MIN_BUFFERS 1
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/* max frame width/height */
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#define GST_V4L2_MAX_SIZE (1<<15) /* 2^15 == 32768 */
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G_BEGIN_DECLS
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#define GST_TYPE_V4L2_IO_MODE (gst_v4l2_io_mode_get_type ())
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GType gst_v4l2_io_mode_get_type (void);
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#define GST_V4L2_OBJECT(obj) (GstV4l2Object *)(obj)
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typedef enum {
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GST_V4L2_IO_AUTO = 0,
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GST_V4L2_IO_RW = 1,
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GST_V4L2_IO_MMAP = 2,
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GST_V4L2_IO_USERPTR = 3,
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GST_V4L2_IO_DMABUF = 4
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} GstV4l2IOMode;
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typedef gboolean (*GstV4l2GetInOutFunction) (GstV4l2Object * v4l2object, gint * input);
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typedef gboolean (*GstV4l2SetInOutFunction) (GstV4l2Object * v4l2object, gint input);
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typedef gboolean (*GstV4l2UpdateFpsFunction) (GstV4l2Object * v4l2object);
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#define GST_V4L2_WIDTH(o) (GST_VIDEO_INFO_WIDTH (&(o)->info))
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#define GST_V4L2_HEIGHT(o) (GST_VIDEO_INFO_HEIGHT (&(o)->info))
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#define GST_V4L2_PIXELFORMAT(o) ((o)->fmtdesc->pixelformat)
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#define GST_V4L2_FPS_N(o) (GST_VIDEO_INFO_FPS_N (&(o)->info))
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#define GST_V4L2_FPS_D(o) (GST_VIDEO_INFO_FPS_D (&(o)->info))
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/* simple check whether the device is open */
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#define GST_V4L2_IS_OPEN(o) ((o)->video_fd > 0)
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/* check whether the device is 'active' */
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#define GST_V4L2_IS_ACTIVE(o) ((o)->active)
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#define GST_V4L2_SET_ACTIVE(o) ((o)->active = TRUE)
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#define GST_V4L2_SET_INACTIVE(o) ((o)->active = FALSE)
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struct _GstV4l2Object {
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GstElement * element;
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enum v4l2_buf_type type; /* V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_BUF_TYPE_VIDEO_OUTPUT */
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/* the video device */
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char *videodev;
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/* the video-device's file descriptor */
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gint video_fd;
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GstV4l2IOMode mode;
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GstPoll * poll;
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gboolean can_poll_device;
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gboolean active;
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gboolean streaming;
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/* the current format */
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struct v4l2_fmtdesc *fmtdesc;
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GstVideoInfo info;
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/* only used if the device supports MPLANE
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* nb planes is meaning of v4l2 planes
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* the gstreamer equivalent is gst_buffer_n_memory
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*/
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gint n_v4l2_planes;
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guint32 bytesperline[GST_VIDEO_MAX_PLANES];
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guint32 sizeimage;
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GstClockTime duration;
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/* if the MPLANE device support both contiguous and non contiguous
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* it allows to select which one we want. But we prefered_non_contiguous
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* non contiguous mode.
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*/
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gboolean prefered_non_contiguous;
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/* This will be set if supported in decide_allocation. It can be used to
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* calculate the minimum latency of a m2m decoder. */
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guint32 min_buffers_for_capture;
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/* wanted mode */
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GstV4l2IOMode req_mode;
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/* optional pool */
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GstBufferPool *pool;
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/* the video device's capabilities */
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struct v4l2_capability vcap;
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/* the video device's window properties */
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struct v4l2_window vwin;
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/* some more info about the current input's capabilities */
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struct v4l2_input vinput;
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/* lists... */
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GSList *formats; /* list of available capture formats */
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GstCaps *probed_caps;
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GList *colors;
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GList *norms;
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GList *channels;
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GData *controls;
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/* properties */
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v4l2_std_id tv_norm;
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gchar *channel;
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gulong frequency;
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GstStructure *extra_controls;
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gboolean keep_aspect;
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GValue *par;
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/* X-overlay */
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GstV4l2Xv *xv;
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gulong xwindow_id;
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/* funcs */
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GstV4l2GetInOutFunction get_in_out_func;
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GstV4l2SetInOutFunction set_in_out_func;
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GstV4l2UpdateFpsFunction update_fps_func;
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/* Quirks */
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/* Skips interlacing probes */
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gboolean never_interlaced;
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/* Allow to skip reading initial format through G_FMT. Some devices
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* just fails if you don't call S_FMT first. (ex: M2M decoders) */
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gboolean no_initial_format;
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};
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struct _GstV4l2ObjectClassHelper {
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/* probed devices */
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GList *devices;
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};
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GType gst_v4l2_object_get_type (void);
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#define V4L2_STD_OBJECT_PROPS \
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PROP_DEVICE, \
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PROP_DEVICE_NAME, \
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PROP_DEVICE_FD, \
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PROP_FLAGS, \
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PROP_BRIGHTNESS, \
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PROP_CONTRAST, \
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PROP_SATURATION, \
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PROP_HUE, \
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PROP_TV_NORM, \
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PROP_IO_MODE, \
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PROP_EXTRA_CONTROLS, \
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PROP_PIXEL_ASPECT_RATIO, \
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PROP_FORCE_ASPECT_RATIO
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/* create/destroy */
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GstV4l2Object* gst_v4l2_object_new (GstElement * element,
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enum v4l2_buf_type type,
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const char * default_device,
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GstV4l2GetInOutFunction get_in_out_func,
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GstV4l2SetInOutFunction set_in_out_func,
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GstV4l2UpdateFpsFunction update_fps_func);
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void gst_v4l2_object_destroy (GstV4l2Object * v4l2object);
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/* properties */
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void gst_v4l2_object_install_properties_helper (GObjectClass * gobject_class,
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const char * default_device);
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gboolean gst_v4l2_object_set_property_helper (GstV4l2Object * v4l2object,
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guint prop_id,
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const GValue * value,
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GParamSpec * pspec);
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gboolean gst_v4l2_object_get_property_helper (GstV4l2Object *v4l2object,
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guint prop_id, GValue * value,
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GParamSpec * pspec);
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/* open/close */
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gboolean gst_v4l2_object_open (GstV4l2Object *v4l2object);
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gboolean gst_v4l2_object_open_shared (GstV4l2Object *v4l2object, GstV4l2Object *other);
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gboolean gst_v4l2_object_close (GstV4l2Object *v4l2object);
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/* probing */
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#if 0
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const GList* gst_v4l2_probe_get_properties (GstPropertyProbe * probe);
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void gst_v4l2_probe_probe_property (GstPropertyProbe * probe, guint prop_id,
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const GParamSpec * pspec,
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GList ** klass_devices);
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gboolean gst_v4l2_probe_needs_probe (GstPropertyProbe * probe, guint prop_id,
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const GParamSpec * pspec,
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GList ** klass_devices);
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GValueArray* gst_v4l2_probe_get_values (GstPropertyProbe * probe, guint prop_id,
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const GParamSpec * pspec,
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GList ** klass_devices);
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#endif
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GstCaps* gst_v4l2_object_get_all_caps (void);
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GstCaps* gst_v4l2_object_get_raw_caps (void);
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GstCaps* gst_v4l2_object_get_codec_caps (void);
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gboolean gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps);
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gboolean gst_v4l2_object_caps_equal (GstV4l2Object * v4l2object, GstCaps * caps);
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gboolean gst_v4l2_object_unlock (GstV4l2Object * v4l2object);
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gboolean gst_v4l2_object_unlock_stop (GstV4l2Object * v4l2object);
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gboolean gst_v4l2_object_stop (GstV4l2Object * v4l2object);
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gboolean gst_v4l2_object_copy (GstV4l2Object * v4l2object,
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GstBuffer * dest, GstBuffer * src);
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GstCaps * gst_v4l2_object_get_caps (GstV4l2Object * v4l2object,
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GstCaps * filter);
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gboolean gst_v4l2_object_setup_format (GstV4l2Object * v4l2object,
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GstVideoInfo * info,
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GstVideoAlignment * align);
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gboolean gst_v4l2_object_decide_allocation (GstV4l2Object * v4l2object,
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GstQuery * query);
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GstStructure * gst_v4l2_object_v4l2fourcc_to_structure (guint32 fourcc);
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#define GST_IMPLEMENT_V4L2_PROBE_METHODS(Type_Class, interface_as_function) \
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\
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static void \
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interface_as_function ## _probe_probe_property (GstPropertyProbe * probe, \
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guint prop_id, \
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const GParamSpec * pspec) \
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{ \
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Type_Class *this_class = (Type_Class*) G_OBJECT_GET_CLASS (probe); \
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gst_v4l2_probe_probe_property (probe, prop_id, pspec, \
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&this_class->v4l2_class_devices); \
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} \
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\
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static gboolean \
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interface_as_function ## _probe_needs_probe (GstPropertyProbe * probe, \
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guint prop_id, \
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const GParamSpec * pspec) \
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{ \
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Type_Class *this_class = (Type_Class*) G_OBJECT_GET_CLASS (probe); \
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return gst_v4l2_probe_needs_probe (probe, prop_id, pspec, \
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&this_class->v4l2_class_devices); \
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} \
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\
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static GValueArray * \
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interface_as_function ## _probe_get_values (GstPropertyProbe * probe, \
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guint prop_id, \
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const GParamSpec * pspec) \
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{ \
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Type_Class *this_class = (Type_Class*) G_OBJECT_GET_CLASS (probe); \
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return gst_v4l2_probe_get_values (probe, prop_id, pspec, \
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&this_class->v4l2_class_devices); \
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} \
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\
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static void \
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interface_as_function ## _property_probe_interface_init (GstPropertyProbeInterface * iface) \
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{ \
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iface->get_properties = gst_v4l2_probe_get_properties; \
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iface->probe_property = interface_as_function ## _probe_probe_property; \
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iface->needs_probe = interface_as_function ## _probe_needs_probe; \
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iface->get_values = interface_as_function ## _probe_get_values; \
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}
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G_END_DECLS
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#endif /* __GST_V4L2_OBJECT_H__ */
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