1 /* GStreamer |
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2 * |
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3 * gstv4lmjpegsink.h: hardware MJPEG video sink element |
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4 * |
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5 * Copyright (C) 2001-2002 Ronald Bultje <rbultje@ronald.bitfreak.net> |
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6 * |
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7 * This library is free software; you can redistribute it and/or |
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8 * modify it under the terms of the GNU Library General Public |
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9 * License as published by the Free Software Foundation; either |
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10 * version 2 of the License, or (at your option) any later version. |
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11 * |
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12 * This library is distributed in the hope that it will be useful, |
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13 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 * Library General Public License for more details. |
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16 * |
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17 * You should have received a copy of the GNU Library General Public |
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18 * License along with this library; if not, write to the |
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19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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20 * Boston, MA 02111-1307, USA. |
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21 */ |
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22 |
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23 #ifndef __GST_V4LMJPEGSINK_H__ |
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24 #define __GST_V4LMJPEGSINK_H__ |
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25 |
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26 #include <gstv4lelement.h> |
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27 #include <sys/time.h> |
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28 #include <videodev_mjpeg.h> |
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29 |
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30 |
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31 G_BEGIN_DECLS |
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32 |
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33 |
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34 #define GST_TYPE_V4LMJPEGSINK \ |
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35 (gst_v4lmjpegsink_get_type()) |
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36 #define GST_V4LMJPEGSINK(obj) \ |
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37 (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_V4LMJPEGSINK,GstV4lMjpegSink)) |
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38 #define GST_V4LMJPEGSINK_CLASS(klass) \ |
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39 (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_V4LMJPEGSINK,GstV4lMjpegSinkClass)) |
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40 #define GST_IS_V4LMJPEGSINK(obj) \ |
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41 (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_V4LMJPEGSINK)) |
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42 #define GST_IS_V4LMJPEGSINK_CLASS(klass) \ |
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43 (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_V4LMJPEGSINK)) |
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44 |
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45 typedef struct _GstV4lMjpegSink GstV4lMjpegSink; |
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46 typedef struct _GstV4lMjpegSinkClass GstV4lMjpegSinkClass; |
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47 |
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48 struct _GstV4lMjpegSink { |
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49 GstV4lElement v4lelement; |
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50 |
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51 /* the sink pas */ |
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52 GstPad *sinkpad; |
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53 |
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54 /* frame properties for common players */ |
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55 gint frames_displayed; |
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56 guint64 frame_time; |
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57 |
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58 /* system clock object */ |
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59 GstClock *clock; |
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60 |
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61 /* buffer/capture info */ |
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62 struct mjpeg_sync bsync; |
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63 struct mjpeg_requestbuffers breq; |
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64 |
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65 /* thread to keep track of synced frames */ |
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66 gint8 *isqueued_queued_frames; /* 1 = queued, 0 = unqueued, -1 = error */ |
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67 GThread *thread_queued_frames; |
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68 GMutex *mutex_queued_frames; |
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69 GCond **cond_queued_frames; |
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70 gint current_frame; |
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71 |
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72 /* width/height/norm of the jpeg stream */ |
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73 gint width; |
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74 gint height; |
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75 gint norm; |
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76 |
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77 /* cache values */ |
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78 gint x_offset; |
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79 gint y_offset; |
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80 |
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81 gint numbufs; |
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82 gint bufsize; /* in KB */ |
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83 }; |
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84 |
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85 struct _GstV4lMjpegSinkClass { |
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86 GstV4lElementClass parent_class; |
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87 |
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88 /* signals */ |
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89 void (*frame_displayed) (GstElement *element); |
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90 }; |
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91 |
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92 GType gst_v4lmjpegsink_get_type(void); |
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93 |
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94 |
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95 G_END_DECLS |
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96 |
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97 #endif /* __GST_SDLVIDEOSINK_H__ */ |
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