gstreamer/sys/v4l/gstv4lmjpegsink.h
Ronald S. Bultje 20538dadc9 This patch fixes some issues caused by design issues in video4linux, adds some nicety to video4linux2 plugins and doe...
Original commit message from CVS:
This patch fixes some issues caused by design issues in video4linux, adds
some nicety to video4linux2 plugins and does some more evil stuff:
* video4linux doesn't tell us which formats are supported by a card, so
the only way to know this is by simply trying it out. This patch adds that.
* v4lmjpegsink didnt have a bufferpool yet - is integrated now.
* all copy() bufferpool functions have been removed since they're not needed.
* v4lmjpegsink doesnt have a free() function, because hen playing the frames,
all this is already handled. When the frame is not played, nothing has to
be done. In total, the function is not needed.
* adds a get_caps() function to v4l2src
* some minor crap
2002-09-20 09:28:46 +00:00

102 lines
2.8 KiB
C

/* G-Streamer hardware MJPEG video sink plugin
* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
*
* 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.
*/
#ifndef __GST_V4LMJPEGSINK_H__
#define __GST_V4LMJPEGSINK_H__
#include <gstv4lelement.h>
#include <sys/time.h>
#include <videodev_mjpeg.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_V4LMJPEGSINK \
(gst_v4lmjpegsink_get_type())
#define GST_V4LMJPEGSINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LMJPEGSINK,GstV4lMjpegSink))
#define GST_V4LMJPEGSINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LMJPEGSINK,GstV4lMjpegSinkClass))
#define GST_IS_V4LMJPEGSINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LMJPEGSINK))
#define GST_IS_V4LMJPEGSINK_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LMJPEGSINK))
typedef struct _GstV4lMjpegSink GstV4lMjpegSink;
typedef struct _GstV4lMjpegSinkClass GstV4lMjpegSinkClass;
struct _GstV4lMjpegSink {
GstV4lElement v4lelement;
/* the sink pas */
GstPad *sinkpad;
/* frame properties for common players */
gint frames_displayed;
guint64 frame_time;
/* system clock object */
GstClock *clock;
/* buffer/capture info */
struct mjpeg_sync bsync;
struct mjpeg_requestbuffers breq;
/* thread to keep track of synced frames */
gint8 *isqueued_queued_frames; /* 1 = queued, 0 = unqueued, -1 = error */
pthread_t thread_queued_frames;
pthread_mutex_t mutex_queued_frames;
pthread_cond_t *cond_queued_frames;
gint current_frame;
/* something to get our buffers from */
GstBufferPool *bufferpool;
/* width/height/norm of the jpeg stream */
gint width;
gint height;
gint norm;
/* cache values */
gint x_offset;
gint y_offset;
gint numbufs;
gint bufsize; /* in KB */
};
struct _GstV4lMjpegSinkClass {
GstV4lElementClass parent_class;
/* signals */
void (*frame_displayed) (GstElement *element);
void (*have_size) (GstElement *element, guint width, guint height);
};
GType gst_v4lmjpegsink_get_type(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_SDLVIDEOSINK_H__ */