author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:16:41 +0100 | |
branch | RCL_3 |
changeset 30 | 7e817e7e631c |
parent 29 | 567bb019e3e3 |
permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) 2003 Benjamin Otte <in7y118@public.uni-hamburg.de> |
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* |
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* gsttypefind.h: typefinding subsystem |
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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_TYPE_FIND_H__ |
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#define __GST_TYPE_FIND_H__ |
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#include <gst/gstcaps.h> |
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#include <gst/gstplugin.h> |
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#include <gst/gstpluginfeature.h> |
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G_BEGIN_DECLS |
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#define GST_TYPE_TYPE_FIND (gst_type_find_get_type()) |
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typedef struct _GstTypeFind GstTypeFind; |
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/** |
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* GstTypeFindFunction: |
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* @find: A #GstTypeFind structure |
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* @data: optionnal data to pass to the function |
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* |
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* A function that will be called by typefinding. |
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*/ |
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typedef void (* GstTypeFindFunction) (GstTypeFind *find, gpointer data); |
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/** |
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* GstTypeFindProbability: |
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* @GST_TYPE_FIND_MINIMUM: unlikely typefind |
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* @GST_TYPE_FIND_POSSIBLE: possible type detected |
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* @GST_TYPE_FIND_LIKELY: likely a type was detected |
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* @GST_TYPE_FIND_NEARLY_CERTAIN: nearly certain that a type was detected |
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* @GST_TYPE_FIND_MAXIMUM: very certain a type was detected. |
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* |
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* The probability of the typefind function. Higher values have more certainty |
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* in doing a reliable typefind. |
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*/ |
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typedef enum { |
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GST_TYPE_FIND_MINIMUM = 1, |
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GST_TYPE_FIND_POSSIBLE = 50, |
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GST_TYPE_FIND_LIKELY = 80, |
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GST_TYPE_FIND_NEARLY_CERTAIN = 99, |
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GST_TYPE_FIND_MAXIMUM = 100 |
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} GstTypeFindProbability; |
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/** |
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* GstTypeFind: |
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* @peek: Method to peek data. |
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* @suggest: Method to suggest #GstCaps with a given probability. |
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* @data: The data used by the caller of the typefinding function. |
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* @get_length: Returns the length of current data. |
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* |
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* Object that stores typefind callbacks. To use with #GstTypeFindFactory. |
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*/ |
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struct _GstTypeFind { |
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/* private to the caller of the typefind function */ |
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guint8 * (* peek) (gpointer data, |
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gint64 offset, |
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guint size); |
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void (* suggest) (gpointer data, |
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guint probability, |
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const GstCaps * caps); |
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gpointer data; |
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/* optional */ |
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guint64 (* get_length) (gpointer data); |
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/* <private> */ |
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gpointer _gst_reserved[GST_PADDING]; |
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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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GType gst_type_find_get_type (void); |
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/* typefind function interface */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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guint8 * gst_type_find_peek (GstTypeFind * find, |
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gint64 offset, |
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guint size); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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void gst_type_find_suggest (GstTypeFind * find, |
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guint probability, |
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const GstCaps * caps); |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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guint64 gst_type_find_get_length (GstTypeFind * find); |
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/* registration interface */ |
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#ifdef __SYMBIAN32__ |
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IMPORT_C |
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#endif |
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gboolean gst_type_find_register (GstPlugin * plugin, |
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const gchar * name, |
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guint rank, |
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GstTypeFindFunction func, |
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gchar ** extensions, |
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const GstCaps * possible_caps, |
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gpointer data, |
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GDestroyNotify data_notify); |
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G_END_DECLS |
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#endif /* __GST_TYPE_FIND_H__ */ |