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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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20538dadc9
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
102 lines
2.8 KiB
C
102 lines
2.8 KiB
C
/* G-Streamer hardware MJPEG video sink plugin
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* Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net>
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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 __GST_V4LMJPEGSINK_H__
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#define __GST_V4LMJPEGSINK_H__
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#include <gstv4lelement.h>
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#include <sys/time.h>
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#include <videodev_mjpeg.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GST_TYPE_V4LMJPEGSINK \
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(gst_v4lmjpegsink_get_type())
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#define GST_V4LMJPEGSINK(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LMJPEGSINK,GstV4lMjpegSink))
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#define GST_V4LMJPEGSINK_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LMJPEGSINK,GstV4lMjpegSinkClass))
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#define GST_IS_V4LMJPEGSINK(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LMJPEGSINK))
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#define GST_IS_V4LMJPEGSINK_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LMJPEGSINK))
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typedef struct _GstV4lMjpegSink GstV4lMjpegSink;
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typedef struct _GstV4lMjpegSinkClass GstV4lMjpegSinkClass;
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struct _GstV4lMjpegSink {
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GstV4lElement v4lelement;
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/* the sink pas */
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GstPad *sinkpad;
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/* frame properties for common players */
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gint frames_displayed;
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guint64 frame_time;
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/* system clock object */
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GstClock *clock;
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/* buffer/capture info */
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struct mjpeg_sync bsync;
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struct mjpeg_requestbuffers breq;
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/* thread to keep track of synced frames */
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gint8 *isqueued_queued_frames; /* 1 = queued, 0 = unqueued, -1 = error */
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pthread_t thread_queued_frames;
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pthread_mutex_t mutex_queued_frames;
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pthread_cond_t *cond_queued_frames;
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gint current_frame;
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/* something to get our buffers from */
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GstBufferPool *bufferpool;
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/* width/height/norm of the jpeg stream */
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gint width;
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gint height;
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gint norm;
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/* cache values */
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gint x_offset;
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gint y_offset;
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gint numbufs;
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gint bufsize; /* in KB */
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};
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struct _GstV4lMjpegSinkClass {
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GstV4lElementClass parent_class;
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/* signals */
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void (*frame_displayed) (GstElement *element);
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void (*have_size) (GstElement *element, guint width, guint height);
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};
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GType gst_v4lmjpegsink_get_type(void);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_SDLVIDEOSINK_H__ */
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