| /* GStreamer |
| * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> |
| * 2000 Wim Taymans <wim.taymans@chello.be> |
| * |
| * gstformat.h: Header for GstFormat types used in queries and |
| * seeking. |
| * |
| * 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_FORMAT_H__ |
| #define __GST_FORMAT_H__ |
| |
| #include <glib.h> |
| |
| G_BEGIN_DECLS |
| |
| typedef enum { |
| GST_FORMAT_UNDEFINED = 0, /* must be first in list */ |
| GST_FORMAT_DEFAULT = 1, /* samples for audio, frames/fields for video */ |
| GST_FORMAT_BYTES = 2, |
| GST_FORMAT_TIME = 3, |
| GST_FORMAT_BUFFERS = 4, |
| GST_FORMAT_PERCENT = 5 |
| } GstFormat; |
| |
| /* a percentage is always relative to 1000000 */ |
| #define GST_FORMAT_PERCENT_MAX G_GINT64_CONSTANT (1000000) |
| #define GST_FORMAT_PERCENT_SCALE G_GINT64_CONSTANT (10000) |
| |
| typedef struct _GstFormatDefinition GstFormatDefinition; |
| |
| struct _GstFormatDefinition |
| { |
| GstFormat value; |
| gchar *nick; |
| gchar *description; |
| }; |
| |
| #ifdef G_HAVE_ISO_VARARGS |
| #define GST_FORMATS_FUNCTION(type, functionname, ...) \ |
| static const GstFormat* \ |
| functionname (type object) \ |
| { \ |
| static const GstFormat formats[] = { \ |
| __VA_ARGS__, \ |
| 0 \ |
| }; \ |
| return formats; \ |
| } |
| #elif defined(G_HAVE_GNUC_VARARGS) |
| #define GST_FORMATS_FUNCTION(type, functionname, a...) \ |
| static const GstFormat* \ |
| functionname (type object) \ |
| { \ |
| static const GstFormat formats[] = { \ |
| a, \ |
| 0 \ |
| }; \ |
| return formats; \ |
| } |
| #endif |
| |
| void _gst_format_initialize (void); |
| |
| /* register a new format */ |
| GstFormat gst_format_register (const gchar *nick, |
| const gchar *description); |
| GstFormat gst_format_get_by_nick (const gchar *nick); |
| |
| /* check if a format is in an array of formats */ |
| gboolean gst_formats_contains (const GstFormat *formats, GstFormat format); |
| |
| /* query for format details */ |
| G_CONST_RETURN GstFormatDefinition* |
| gst_format_get_details (GstFormat format); |
| G_CONST_RETURN GList* |
| gst_format_get_definitions (void); |
| |
| G_END_DECLS |
| |
| #endif /* __GST_FORMAT_H__ */ |