FCL/sf/mw/gstreamer: comparison gstreamer

equal deleted inserted replaced

-:4b0c6ed43234
+:8e837d1bf446
 * SECTION:gsttaglist
 * @short_description: List of tags and values used to describe media metadata
 *
 * List of tags and values used to describe media metadata.
 *
-* Last reviewed on 2005-11-23 (0.9.5)
+* Strings must be in ASCII or UTF-8 encoding. No other encodings are allowed.
+*
+* Last reviewed on 2009-06-09 (0.10.23)
 */
 #ifdef HAVE_CONFIG_H
 #  include "config.h"
 #endif
 #include "gst-i18n-lib.h"
 #include "gsttaglist.h"
 #include "gstinfo.h"
 #include "gstvalue.h"
 #include "gstbuffer.h"
+#include "gstquark.h"
 #include <gobject/gvaluecollector.h>
 #include <string.h>
 #ifdef __SYMBIAN32__
 GstTagMergeFunc merge_func;   /* functions to merge the values */
 GstTagFlag flag;              /* type of tag */
 }
 GstTagInfo;
-#define TAGLIST "taglist"
-static GQuark gst_tag_list_quark;
 static GMutex *__tag_mutex;
 static GHashTable *__tags;
 #define TAG_LOCK g_mutex_lock (__tag_mutex)
 #define TAG_UNLOCK g_mutex_unlock (__tag_mutex)
 #ifdef __SYMBIAN32__
 EXPORT_C
 #endif
 GType
 gst_tag_list_get_type (void)
 {
 static GType _gst_tag_list_type = 0;
 void
 _gst_tag_initialize (void)
 {
-gst_tag_list_quark = g_quark_from_static_string (TAGLIST);
 __tag_mutex = g_mutex_new ();
 __tags = g_hash_table_new (g_direct_hash, g_direct_equal);
 gst_tag_register (GST_TAG_TITLE, GST_TAG_FLAG_META,
 G_TYPE_STRING,
 _("title"), _("commonly used title"), gst_tag_merge_strings_with_comma);
 _("count of discs inside collection this disc belongs to"),
 gst_tag_merge_use_first);
 gst_tag_register (GST_TAG_LOCATION, GST_TAG_FLAG_META,
 G_TYPE_STRING,
 _("location"),
-_("original location of file as a URI"),
+_
+("Origin of media as a URI (location, where the original of the file or stream is hosted)"),
 gst_tag_merge_strings_with_comma);
-gst_tag_register (GST_TAG_DESCRIPTION, GST_TAG_FLAG_META,
+gst_tag_register (GST_TAG_HOMEPAGE, GST_TAG_FLAG_META,
 G_TYPE_STRING,
-_("description"),
+_("homepage"),
-_("short text describing the content of the data"),
+_
+("Homepage for this media (i.e. artist or movie homepage)"),
 gst_tag_merge_strings_with_comma);
-gst_tag_register (GST_TAG_VERSION, GST_TAG_FLAG_META,
+gst_tag_register (GST_TAG_DESCRIPTION, GST_TAG_FLAG_META, G_TYPE_STRING,
-G_TYPE_STRING, _("version"), _("version of this data"), NULL);
+_("description"), _("short text describing the content of the data"),
-gst_tag_register (GST_TAG_ISRC, GST_TAG_FLAG_META,
+gst_tag_merge_strings_with_comma);
-G_TYPE_STRING,
+gst_tag_register (GST_TAG_VERSION, GST_TAG_FLAG_META, G_TYPE_STRING,
-_("ISRC"),
+_("version"), _("version of this data"), NULL);
+gst_tag_register (GST_TAG_ISRC, GST_TAG_FLAG_META, G_TYPE_STRING, _("ISRC"),
 _
 ("International Standard Recording Code - see http://www.ifpi.org/isrc/"),
 NULL);
 gst_tag_register (GST_TAG_ORGANIZATION, GST_TAG_FLAG_META, G_TYPE_STRING, _("organization"), _("organization"),       /* FIXME */
 gst_tag_merge_strings_with_comma);
 G_TYPE_STRING,
 _("video codec"), _("codec the video data is stored in"), NULL);
 gst_tag_register (GST_TAG_AUDIO_CODEC, GST_TAG_FLAG_ENCODED,
 G_TYPE_STRING,
 _("audio codec"), _("codec the audio data is stored in"), NULL);
+gst_tag_register (GST_TAG_SUBTITLE_CODEC, GST_TAG_FLAG_ENCODED,
+G_TYPE_STRING,
+_("subtitle codec"), _("codec the subtitle data is stored in"), NULL);
+gst_tag_register (GST_TAG_CONTAINER_FORMAT, GST_TAG_FLAG_ENCODED,
+G_TYPE_STRING, _("container format"),
+_("container format the data is stored in"), NULL);
 gst_tag_register (GST_TAG_BITRATE, GST_TAG_FLAG_ENCODED,
 G_TYPE_UINT, _("bitrate"), _("exact or average bitrate in bits/s"), NULL);
 gst_tag_register (GST_TAG_NOMINAL_BITRATE, GST_TAG_FLAG_ENCODED,
 G_TYPE_UINT, _("nominal bitrate"), _("nominal bitrate in bits/s"), NULL);
 gst_tag_register (GST_TAG_MINIMUM_BITRATE, GST_TAG_FLAG_ENCODED,
 _("language code for this stream, conforming to ISO-639-1"), NULL);
 gst_tag_register (GST_TAG_IMAGE, GST_TAG_FLAG_META, GST_TYPE_BUFFER,
 _("image"), _("image related to this stream"), gst_tag_merge_use_first);
 gst_tag_register (GST_TAG_PREVIEW_IMAGE, GST_TAG_FLAG_META, GST_TYPE_BUFFER,
 _("preview image"), _("preview image related to this stream"), NULL);
+gst_tag_register (GST_TAG_ATTACHMENT, GST_TAG_FLAG_META, GST_TYPE_BUFFER,
+_("attachment"), _("file attached to this stream"),
+gst_tag_merge_use_first);
 gst_tag_register (GST_TAG_BEATS_PER_MINUTE, GST_TAG_FLAG_META, G_TYPE_DOUBLE,
 _("beats per minute"), _("number of beats per minute in audio"), NULL);
+gst_tag_register (GST_TAG_KEYWORDS, GST_TAG_FLAG_META, G_TYPE_STRING,
+_("keywords"), _("comma separated keywords describing the content"),
+gst_tag_merge_strings_with_comma);
+gst_tag_register (GST_TAG_GEO_LOCATION_NAME, GST_TAG_FLAG_META, G_TYPE_STRING,
+_("geo location name"),
+_
+("human readable descriptive location of where the media has been recorded or produced"),
+NULL);
+gst_tag_register (GST_TAG_GEO_LOCATION_LATITUDE, GST_TAG_FLAG_META,
+G_TYPE_DOUBLE, _("geo location latitude"),
+_
+("geo latitude location of where the media has been recorded or produced in degrees according to WGS84 (zero at the equator, negative values for southern latitudes)"),
+NULL);
+gst_tag_register (GST_TAG_GEO_LOCATION_LONGITUDE, GST_TAG_FLAG_META,
+G_TYPE_DOUBLE, _("geo location longitude"),
+_
+("geo longitude location of where the media has been recorded or produced in degrees according to WGS84 (zero at the prime meridian in Greenwich/UK,  negative values for western longitudes)"),
+NULL);
+gst_tag_register (GST_TAG_GEO_LOCATION_ELEVATION, GST_TAG_FLAG_META,
+G_TYPE_DOUBLE, _("geo location elevation"),
+_
+("geo elevation of where the media has been recorded or produced in meters according to WGS84 (zero is average sea level)"),
+NULL);
 }
 /**
 * gst_tag_merge_use_first:
 * @dest: uninitialized GValue to store result in
 void
 gst_tag_merge_strings_with_comma (GValue * dest, const GValue * src)
 {
 GString *str;
 gint i, count;
 count = gst_value_list_get_size (src);
 str = g_string_new (g_value_get_string (gst_value_list_get_value (src, 0)));
 for (i = 1; i < count; i++) {
 g_string_append (str, g_value_get_string (gst_value_list_get_value (src,
 1)));
 }
 g_value_init (dest, G_TYPE_STRING);
-g_value_set_string_take_ownership (dest, str->str);
+g_value_take_string (dest, str->str);
 g_string_free (str, FALSE);
 }
 static GstTagInfo *
 gst_tag_lookup (GQuark entry)
 {
 GstTagInfo *ret;
 void
 gst_tag_register (const gchar * name, GstTagFlag flag, GType type,
 const gchar * nick, const gchar * blurb, GstTagMergeFunc func)
 {
 GQuark key;
 GstTagInfo *info;
 g_return_if_fail (name != NULL);
 g_return_if_fail (nick != NULL);
 g_return_if_fail (blurb != NULL);
 #endif
 GstTagList *
 gst_tag_list_new (void)
 {
-return GST_TAG_LIST (gst_structure_new (TAGLIST, NULL));
+return GST_TAG_LIST (gst_structure_id_empty_new (GST_QUARK (TAGLIST)));
+}
+/**
+* gst_tag_list_new_full:
+* @tag: tag
+* @...: NULL-terminated list of values to set
+*
+* Creates a new taglist and appends the values for the given tags. It expects
+* tag-value pairs like gst_tag_list_add(), and a NULL terminator after the
+* last pair. The type of the values is implicit and is documented in the API
+* reference, but can also be queried at runtime with gst_tag_get_type(). It
+* is an error to pass a value of a type not matching the tag type into this
+* function. The tag list will make copies of any arguments passed
+* (e.g. strings, buffers).
+*
+* Returns: a new #GstTagList. Free with gst_tag_list_free() when no longer
+*     needed.
+*
+* Since: 0.10.24
+*/
+/* FIXME 0.11: rename gst_tag_list_new_full to _new and _new to _new_empty */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+GstTagList *
+gst_tag_list_new_full (const gchar * tag, ...)
+{
+GstTagList *list;
+va_list args;
+g_return_val_if_fail (tag != NULL, NULL);
+list = gst_tag_list_new ();
+va_start (args, tag);
+gst_tag_list_add_valist (list, GST_TAG_MERGE_APPEND, tag, args);
+va_end (args);
+return list;
+}
+/**
+* gst_tag_list_new_full_valist:
+* @var_args: tag / value pairs to set
+*
+* Just like gst_tag_list_new_full(), only that it takes a va_list argument.
+* Useful mostly for language bindings.
+*
+* Returns: a new #GstTagList. Free with gst_tag_list_free() when no longer
+*     needed.
+*
+* Since: 0.10.24
+*/
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+GstTagList *
+gst_tag_list_new_full_valist (va_list var_args)
+{
+GstTagList *list;
+const gchar *tag;
+list = gst_tag_list_new ();
+tag = va_arg (var_args, gchar *);
+gst_tag_list_add_valist (list, GST_TAG_MERGE_APPEND, tag, var_args);
+return list;
 }
 /**
 * gst_tag_list_is_empty:
 * @list: A #GstTagList.
 {
 GstStructure *s = (GstStructure *) p;
 g_return_val_if_fail (p != NULL, FALSE);
-return (GST_IS_STRUCTURE (s) && s->name == gst_tag_list_quark);
+return (GST_IS_STRUCTURE (s) && s->name == GST_QUARK (TAGLIST));
 }
 typedef struct
 {
 GstStructure *list;
 GstTagMergeMode mode;
 }
 GstTagCopyData;
 static void
 gst_tag_list_add_value_internal (GstStructure * list, GstTagMergeMode mode,
 GQuark tag, const GValue * value)
 {
 GstTagInfo *info = gst_tag_lookup (tag);
 const GValue *value2;
 g_assert (info != NULL);
 if (info->merge_func
 g_assert_not_reached ();
 break;
 }
 }
 }
 static gboolean
 gst_tag_list_copy_foreach (GQuark tag, const GValue * value, gpointer user_data)
 {
 GstTagCopyData *copy = (GstTagCopyData *) user_data;
 * gst_tag_list_insert:
 * @into: list to merge into
 * @from: list to merge from
 * @mode: the mode to use
 *
-* Inserts the tags of the second list into the first list using the given mode.
+* Inserts the tags of the @from list into the first list using the given mode.
 */
 #ifdef __SYMBIAN32__
 EXPORT_C
 #endif
 GstTagList *
 gst_tag_list_merge (const GstTagList * list1, const GstTagList * list2,
 GstTagMergeMode mode)
 {
+GstTagList *list1_cp;
+const GstTagList *list2_cp;
 g_return_val_if_fail (list1 == NULL || GST_IS_TAG_LIST (list1), NULL);
 g_return_val_if_fail (list2 == NULL || GST_IS_TAG_LIST (list2), NULL);
 g_return_val_if_fail (GST_TAG_MODE_IS_VALID (mode), NULL);
+/* nothing to merge */
 if (!list1 && !list2) {
 return NULL;
-} else if (!list1) {
-return gst_tag_list_copy (list2);
-} else if (!list2) {
-return gst_tag_list_copy (list1);
-} else {
-GstTagList *ret;
-ret = gst_tag_list_copy (list1);
-gst_tag_list_insert (ret, list2, mode);
-return ret;
 }
+/* create empty list, we need to do this to correctly handling merge modes */
+list1_cp = (list1) ? gst_tag_list_copy (list1) : gst_tag_list_new ();
+list2_cp = (list2) ? list2 : gst_tag_list_new ();
+gst_tag_list_insert (list1_cp, list2_cp, mode);
+if (!list2)
+gst_tag_list_free ((GstTagList *) list2_cp);
+return list1_cp;
 }
 /**
 * gst_tag_list_free:
 * @list: the list to free
 gchar *error = NULL;
 g_return_if_fail (GST_IS_TAG_LIST (list));
 g_return_if_fail (GST_TAG_MODE_IS_VALID (mode));
 g_return_if_fail (tag != NULL);
+if (mode == GST_TAG_MERGE_REPLACE_ALL) {
+gst_structure_remove_all_fields (list);
+}
 while (tag != NULL) {
 GValue value = { 0, };
 quark = g_quark_from_string (tag);
 void
 gst_tag_list_add_valist_values (GstTagList * list, GstTagMergeMode mode,
 const gchar * tag, va_list var_args)
 {
-GstTagInfo *info;
 GQuark quark;
 g_return_if_fail (GST_IS_TAG_LIST (list));
 g_return_if_fail (GST_TAG_MODE_IS_VALID (mode));
 g_return_if_fail (tag != NULL);
+if (mode == GST_TAG_MERGE_REPLACE_ALL) {
+gst_structure_remove_all_fields (list);
+}
 while (tag != NULL) {
 quark = g_quark_from_string (tag);
-info = gst_tag_lookup (quark);
+g_return_if_fail (gst_tag_lookup (quark) != NULL);
-g_return_if_fail (info != NULL);
 gst_tag_list_add_value_internal (list, mode, quark, va_arg (var_args,
 GValue *));
 tag = va_arg (var_args, gchar *);
 }
 }
 /**
+* gst_tag_list_add_value:
+* @list: list to set tags in
+* @mode: the mode to use
+* @tag: tag
+* @value: GValue for this tag
+*
+* Sets the GValue for a given tag using the specified mode.
+*
+* Since: 0.10.24
+*/
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+void
+gst_tag_list_add_value (GstTagList * list, GstTagMergeMode mode,
+const gchar * tag, const GValue * value)
+{
+g_return_if_fail (GST_IS_TAG_LIST (list));
+g_return_if_fail (GST_TAG_MODE_IS_VALID (mode));
+g_return_if_fail (tag != NULL);
+gst_tag_list_add_value_internal (list, mode, g_quark_from_string (tag),
+value);
+}
+/**
 * gst_tag_list_remove_tag:
 * @list: list to remove tag from
 * @tag: tag to remove
 *
 * Removes the given tag from the taglist.
 g_return_if_fail (GST_IS_TAG_LIST (list));
 g_return_if_fail (tag != NULL);
 gst_structure_remove_field ((GstStructure *) list, tag);
 }
 typedef struct
 {
 GstTagForeachFunc func;
 const GstTagList *tag_list;
 gpointer data;
 }
 TagForeachData;
 static int
 structure_foreach_wrapper (GQuark field_id, const GValue * value,
 gpointer user_data)
 {
 TagForeachData *data = (TagForeachData *) user_data;
 return FALSE;
 if (G_VALUE_TYPE (src) == GST_TYPE_LIST) {
 GstTagInfo *info = gst_tag_lookup (g_quark_from_string (tag));
+if (!info)
+return FALSE;
 /* must be there or lists aren't allowed */
 g_assert (info->merge_func);
 info->merge_func (dest, src);
 } else {
 g_value_init (dest, G_VALUE_TYPE (src));
 * (unless someone can actually think of real use cases where the merge
 * function is not 'use first' for non-strings and merge for strings) */
 /***** evil macros to get all the gst_tag_list_get_*() functions right *****/
-#define TAG_MERGE_FUNCS(name,type)                                      \
+#define TAG_MERGE_FUNCS(name,type,ret)                                  \
 gboolean                                                                \
 __declspec(dllexport)	gst_tag_list_get_ ## name (const GstTagList *list, const gchar *tag,    \
 type *value)                                 \
 {                                                                       \
 GValue v = { 0, };                                                    \
 \
 if (!gst_tag_list_copy_value (&v, list, tag))                         \
 return FALSE;                                                     \
 *value = COPY_FUNC (g_value_get_ ## name (&v));                       \
 g_value_unset (&v);                                                   \
-return TRUE;                                                          \
+return ret;                                                           \
 }                                                                       \
 \
 __declspec(dllexport)	gboolean                                                                \
 gst_tag_list_get_ ## name ## _index (const GstTagList *list,            \
 const gchar *tag,                  \
 g_return_val_if_fail (value != NULL, FALSE);                          \
 \
 if ((v = gst_tag_list_get_value_index (list, tag, index)) == NULL)    \
 return FALSE;                                                     \
 *value = COPY_FUNC (g_value_get_ ## name (v));                        \
-return TRUE;                                                          \
+return ret;                                                           \
 }
 /* FIXME 0.11: maybe get rid of _get_char*(), _get_uchar*(), _get_long*(),
 * _get_ulong*() and _get_pointer*()? - they are not really useful/common
 * enough to warrant convenience accessor functions */
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (char, gchar)
+TAG_MERGE_FUNCS (char, gchar, TRUE)
 /**
 * gst_tag_list_get_uchar:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (uchar, guchar)
+TAG_MERGE_FUNCS (uchar, guchar, TRUE)
 /**
 * gst_tag_list_get_boolean:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (boolean, gboolean)
+TAG_MERGE_FUNCS (boolean, gboolean, TRUE)
 /**
 * gst_tag_list_get_int:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (int, gint)
+TAG_MERGE_FUNCS (int, gint, TRUE)
 /**
 * gst_tag_list_get_uint:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (uint, guint)
+TAG_MERGE_FUNCS (uint, guint, TRUE)
 /**
 * gst_tag_list_get_long:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (long, glong)
+TAG_MERGE_FUNCS (long, glong, TRUE)
 /**
 * gst_tag_list_get_ulong:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (ulong, gulong)
+TAG_MERGE_FUNCS (ulong, gulong, TRUE)
 /**
 * gst_tag_list_get_int64:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (int64, gint64)
+TAG_MERGE_FUNCS (int64, gint64, TRUE)
 /**
 * gst_tag_list_get_uint64:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (uint64, guint64)
+TAG_MERGE_FUNCS (uint64, guint64, TRUE)
 /**
 * gst_tag_list_get_float:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (float, gfloat)
+TAG_MERGE_FUNCS (float, gfloat, TRUE)
 /**
 * gst_tag_list_get_double:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (double, gdouble)
+TAG_MERGE_FUNCS (double, gdouble, TRUE)
 /**
 * gst_tag_list_get_pointer:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @value: location for the result
 * list.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
-TAG_MERGE_FUNCS (pointer, gpointer)
+TAG_MERGE_FUNCS (pointer, gpointer, (*value != NULL))
 #undef COPY_FUNC
 #define COPY_FUNC g_strdup
 /**
 * gst_tag_list_get_string:
 * @list: a #GstTagList to get the tag from
 *
 * Use gst_tag_list_get_string_index (list, tag, 0, value) if you want
 * to retrieve the first string associated with this tag unmodified.
 *
 * The resulting string in @value will be in UTF-8 encoding and should be
-* freed by the caller using g_free when no longer needed.
+* freed by the caller using g_free when no longer needed. Since 0.10.24 the
+* returned string is also guaranteed to be non-NULL and non-empty.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list.
 */
 /**
 *
 * Gets the value that is at the given index for the given tag in the given
 * list.
 *
 * The resulting string in @value will be in UTF-8 encoding and should be
-* freed by the caller using g_free when no longer needed.
+* freed by the caller using g_free when no longer needed. Since 0.10.24 the
-*
+* returned string is also guaranteed to be non-NULL and non-empty.
-* Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
+*
-*              given list.
+* Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
-*/
+*              given list.
-TAG_MERGE_FUNCS (string, gchar *)
+*/
+TAG_MERGE_FUNCS (string, gchar *, (*value != NULL && **value != '\0'))
 /**
 * gst_tag_list_get_date:
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
-* @value: location for the result
+* @value: address of a GDate pointer variable to store the result into
 *
-* Copies the contents for the given tag into the value, merging multiple values
+* Copies the first date for the given tag in the taglist into the variable
-* into one if multiple values are associated with the tag.
+* pointed to by @value. Free the date with g_date_free() when it is no longer
-*
+* needed.
-* Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
+*
+* Returns: TRUE, if a date was copied, FALSE if the tag didn't exist in the
 *              given list or if it was #NULL.
 */
 #ifdef __SYMBIAN32__
 EXPORT_C
 #endif
 * @list: a #GstTagList to get the tag from
 * @tag: tag to read out
 * @index: number of entry to read out
 * @value: location for the result
 *
-* Gets the value that is at the given index for the given tag in the given
+* Gets the date that is at the given index for the given tag in the given
-* list.
+* list and copies it into the variable pointed to by @value. Free the date
+* with g_date_free() when it is no longer needed.
 *
 * Returns: TRUE, if a value was copied, FALSE if the tag didn't exist in the
 *              given list or if it was #NULL.
 */
 #ifdef __SYMBIAN32__
 if ((v = gst_tag_list_get_value_index (list, tag, index)) == NULL)
 return FALSE;
 *value = (GDate *) g_value_dup_boxed (v);
 return (*value != NULL);
 }
+/**
+* gst_tag_list_get_buffer:
+* @list: a #GstTagList to get the tag from
+* @tag: tag to read out
+* @value: address of a GstBuffer pointer variable to store the result into
+*
+* Copies the first buffer for the given tag in the taglist into the variable
+* pointed to by @value. Free the buffer with gst_buffer_unref() when it is
+* no longer needed.
+*
+* Returns: TRUE, if a buffer was copied, FALSE if the tag didn't exist in the
+*              given list or if it was #NULL.
+*
+* Since: 0.10.23
+*/
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+gboolean
+gst_tag_list_get_buffer (const GstTagList * list, const gchar * tag,
+GstBuffer ** value)
+{
+GValue v = { 0, };
+g_return_val_if_fail (GST_IS_TAG_LIST (list), FALSE);
+g_return_val_if_fail (tag != NULL, FALSE);
+g_return_val_if_fail (value != NULL, FALSE);
+if (!gst_tag_list_copy_value (&v, list, tag))
+return FALSE;
+*value = (GstBuffer *) gst_value_dup_mini_object (&v);
+g_value_unset (&v);
+return (*value != NULL);
+}
+/**
+* gst_tag_list_get_buffer_index:
+* @list: a #GstTagList to get the tag from
+* @tag: tag to read out
+* @index: number of entry to read out
+* @value: address of a GstBuffer pointer variable to store the result into
+*
+* Gets the buffer that is at the given index for the given tag in the given
+* list and copies it into the variable pointed to by @value. Free the buffer
+* with gst_buffer_unref() when it is no longer needed.
+*
+* Returns: TRUE, if a buffer was copied, FALSE if the tag didn't exist in the
+*              given list or if it was #NULL.
+*
+* Since: 0.10.23
+*/
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+gboolean
+gst_tag_list_get_buffer_index (const GstTagList * list,
+const gchar * tag, guint index, GstBuffer ** value)
+{
+const GValue *v;
+g_return_val_if_fail (GST_IS_TAG_LIST (list), FALSE);
+g_return_val_if_fail (tag != NULL, FALSE);
+g_return_val_if_fail (value != NULL, FALSE);
+if ((v = gst_tag_list_get_value_index (list, tag, index)) == NULL)
+return FALSE;
+*value = (GstBuffer *) gst_value_dup_mini_object (v);
+return (*value != NULL);
+}

changeset 16	8e837d1bf446
parent 0	0e761a78d257
child 30	7e817e7e631c