author | hgs |
Fri, 14 May 2010 18:43:44 -0500 | |
changeset 20 | 7e3786c5ed27 |
parent 16 | 8e837d1bf446 |
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permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> |
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* 2000 Wim Taymans <wim.taymans@chello.be> |
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* |
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* gstformat.h: Header for GstFormat types used in queries and |
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* seeking. |
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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_FORMAT_H__ |
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#define __GST_FORMAT_H__ |
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#include <glib.h> |
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#include <gst/gstiterator.h> |
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G_BEGIN_DECLS |
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/** |
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* GstFormat: |
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* @GST_FORMAT_UNDEFINED: undefined format |
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* @GST_FORMAT_DEFAULT: the default format of the pad/element. This can be |
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* samples for raw audio, frames/fields for raw video (some, but not all, |
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* elements support this; use @GST_FORMAT_TIME if you don't have a good |
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* reason to query for samples/frames) |
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* @GST_FORMAT_BYTES: bytes |
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* @GST_FORMAT_TIME: time in nanoseconds |
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* @GST_FORMAT_BUFFERS: buffers (few, if any, elements implement this as of |
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* May 2009) |
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* @GST_FORMAT_PERCENT: percentage of stream (few, if any, elements implement |
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* this as of May 2009) |
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* |
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* Standard predefined formats |
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*/ |
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/* NOTE: don't forget to update the table in gstformat.c when changing |
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* this enum */ |
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typedef enum { |
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GST_FORMAT_UNDEFINED = 0, /* must be first in list */ |
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GST_FORMAT_DEFAULT = 1, |
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GST_FORMAT_BYTES = 2, |
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GST_FORMAT_TIME = 3, |
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GST_FORMAT_BUFFERS = 4, |
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GST_FORMAT_PERCENT = 5 |
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} GstFormat; |
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/* a percentage is always relative to 1000000 */ |
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/** |
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* GST_FORMAT_PERCENT_MAX: |
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* |
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* The PERCENT format is between 0 and this value |
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*/ |
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#define GST_FORMAT_PERCENT_MAX G_GINT64_CONSTANT (1000000) |
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/** |
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* GST_FORMAT_PERCENT_SCALE: |
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* |
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* The value used to scale down the reported PERCENT format value to |
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* its real value. |
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*/ |
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#define GST_FORMAT_PERCENT_SCALE G_GINT64_CONSTANT (10000) |
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typedef struct _GstFormatDefinition GstFormatDefinition; |
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/** |
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* GstFormatDefinition: |
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* @value: The unique id of this format |
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* @nick: A short nick of the format |
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* @description: A longer description of the format |
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* @quark: A quark for the nick |
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* |
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* A format definition |
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*/ |
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struct _GstFormatDefinition |
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{ |
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GstFormat value; |
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gchar *nick; |
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gchar *description; |
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GQuark quark; |
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}; |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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const gchar* gst_format_get_name (GstFormat format); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GQuark gst_format_to_quark (GstFormat format); |
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/* register a new format */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstFormat gst_format_register (const gchar *nick, |
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const gchar *description); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstFormat gst_format_get_by_nick (const gchar *nick); |
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/* check if a format is in an array of formats */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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gboolean gst_formats_contains (const GstFormat *formats, GstFormat format); |
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/* query for format details */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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G_CONST_RETURN GstFormatDefinition* |
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gst_format_get_details (GstFormat format); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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GstIterator* gst_format_iterate_definitions (void); |
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G_END_DECLS |
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#endif /* __GST_FORMAT_H__ */ |