| /* GStreamer |
| * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
| * |
| * 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., 51 Franklin St, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #ifndef __GST_VIDEO_RATE_H__ |
| #define __GST_VIDEO_RATE_H__ |
| |
| #include <gst/gst.h> |
| #include <gst/base/gstbasetransform.h> |
| |
| G_BEGIN_DECLS |
| |
| #define GST_TYPE_VIDEO_RATE \ |
| (gst_video_rate_get_type()) |
| #define GST_VIDEO_RATE(obj) \ |
| (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEO_RATE,GstVideoRate)) |
| #define GST_VIDEO_RATE_CLASS(klass) \ |
| (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEO_RATE,GstVideoRateClass)) |
| #define GST_IS_VIDEO_RATE(obj) \ |
| (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEO_RATE)) |
| #define GST_IS_VIDEO_RATE_CLASS(klass) \ |
| (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEO_RATE)) |
| |
| typedef struct _GstVideoRate GstVideoRate; |
| typedef struct _GstVideoRateClass GstVideoRateClass; |
| |
| /** |
| * GstVideoRate: |
| * |
| * Opaque data structure. |
| */ |
| struct _GstVideoRate |
| { |
| GstBaseTransform parent; |
| |
| /* video state */ |
| gint from_rate_numerator, from_rate_denominator; |
| gint to_rate_numerator, to_rate_denominator; |
| guint64 next_ts; /* Timestamp of next buffer to output */ |
| GstBuffer *prevbuf; |
| guint64 prev_ts; /* Previous buffer timestamp */ |
| guint64 out_frame_count; /* number of frames output since the beginning |
| * of the segment or the last frame rate caps |
| * change, whichever was later */ |
| guint64 base_ts; /* used in next_ts calculation after a |
| * frame rate caps change */ |
| gboolean discont; |
| guint64 last_ts; /* Timestamp of last input buffer */ |
| |
| guint64 average_period; |
| GstClockTimeDiff wanted_diff; /* target average diff */ |
| GstClockTimeDiff average; /* moving average period */ |
| gboolean force_variable_rate; |
| gboolean updating_caps; |
| |
| /* segment handling */ |
| GstSegment segment; |
| |
| /* properties */ |
| guint64 in, out, dup, drop; |
| gboolean silent; |
| gdouble new_pref; |
| gboolean skip_to_first; |
| gboolean drop_only; |
| guint64 average_period_set; |
| |
| volatile int max_rate; |
| }; |
| |
| struct _GstVideoRateClass |
| { |
| GstBaseTransformClass parent_class; |
| }; |
| |
| GType gst_video_rate_get_type (void); |
| |
| G_END_DECLS |
| |
| #endif /* __GST_VIDEO_RATE_H__ */ |