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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-29 13:11:06 +00:00
I think this makes a little more sense
Original commit message from CVS: I think this makes a little more sense
This commit is contained in:
Wim Taymans
parent
e720f95202
commit
2ef7c8b385
4 changed files with 81 additions and 43 deletions
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@ -39,6 +39,8 @@ enum {
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static void gst_index_class_init (GstIndexClass *klass);
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static void gst_index_init (GstIndex *index);
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static gboolean gst_index_default_path_resolver (GstIndex *index, GstObject *writer,
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gchar **writer_string, gpointer data);
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static GstObject *parent_class = NULL;
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static guint gst_index_signals[LAST_SIGNAL] = { 0 };
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@ -108,6 +110,8 @@ gst_index_init (GstIndex *index)
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index->writers = g_hash_table_new (NULL, NULL);
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index->last_id = 0;
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gst_index_set_resolver (index, gst_index_default_path_resolver, NULL);
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GST_FLAG_SET (index, GST_INDEX_WRITABLE);
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GST_FLAG_SET (index, GST_INDEX_READABLE);
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@ -320,7 +324,7 @@ gst_index_add_format (GstIndex *index, gint id, GstFormat format)
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g_return_val_if_fail (GST_IS_INDEX (index), NULL);
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g_return_val_if_fail (format != 0, NULL);
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if (!GST_INDEX_IS_WRITABLE (index))
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if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
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return NULL;
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entry = g_new0 (GstIndexEntry, 1);
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@ -360,7 +364,7 @@ gst_index_add_id (GstIndex *index, gint id, gchar *description)
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g_return_val_if_fail (GST_IS_INDEX (index), NULL);
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g_return_val_if_fail (description != NULL, NULL);
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if (!GST_INDEX_IS_WRITABLE (index))
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if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
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return NULL;
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entry = g_new0 (GstIndexEntry, 1);
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@ -378,6 +382,15 @@ gst_index_add_id (GstIndex *index, gint id, gchar *description)
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return entry;
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}
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static gboolean
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gst_index_default_path_resolver (GstIndex *index, GstObject *writer,
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gchar **writer_string, gpointer data)
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{
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*writer_string = gst_object_get_path_string (writer);
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return TRUE;
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}
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/**
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* gst_index_get_writer_id:
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* @index: the index to get a unique write id for
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@ -388,8 +401,9 @@ gst_index_add_id (GstIndex *index, gint id, gchar *description)
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* should obtain a unique id. The methods to add new entries
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* to the index require this id as an argument.
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*
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* The application or a GstIndex subclass can implement
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* custom functions to map the writer object to an id.
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* The application can implement a custom function to map the writer object
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* to a string. That string will be used to register or look up an id
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* in the index.
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*
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* Returns: TRUE if the writer would be mapped to an id.
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*/
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@ -397,9 +411,9 @@ gboolean
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gst_index_get_writer_id (GstIndex *index, GstObject *writer, gint *id)
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{
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gchar *writer_string = NULL;
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gboolean success = FALSE;
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GstIndexEntry *entry;
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GstIndexClass *iclass;
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gboolean success = FALSE;
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g_return_val_if_fail (GST_IS_INDEX (index), FALSE);
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g_return_val_if_fail (GST_IS_OBJECT (writer), FALSE);
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@ -407,28 +421,50 @@ gst_index_get_writer_id (GstIndex *index, GstObject *writer, gint *id)
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*id = -1;
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/* first try to get a previously cached id */
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entry = g_hash_table_lookup (index->writers, writer);
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if (entry == NULL) {
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*id = index->last_id;
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writer_string = gst_object_get_path_string (writer);
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gst_index_add_id (index, *id, writer_string);
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index->last_id++;
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iclass = GST_INDEX_GET_CLASS (index);
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/* let the app make a string */
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if (index->resolver) {
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gboolean res;
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res = index->resolver (index, writer, &writer_string, index->resolver_user_data);
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if (!res)
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return FALSE;
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}
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else {
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g_warning ("no resolver found");
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return FALSE;
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}
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/* if the index has a resolver, make it map this string to an id */
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if (iclass->get_writer_id) {
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success = iclass->get_writer_id (index, id, writer_string);
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}
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/* if the index could not resolve, we allocate one ourselves */
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if (!success) {
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*id = index->last_id++;
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}
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entry = gst_index_add_id (index, *id, writer_string);
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if (!entry) {
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/* index is probably not writable, make an entry anyway
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* to keep it in our cache */
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entry = g_new0 (GstIndexEntry, 1);
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entry->type = GST_INDEX_ENTRY_ID;
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entry->id = *id;
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entry->data.id.description = writer_string;
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}
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g_hash_table_insert (index->writers, writer, entry);
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}
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iclass = GST_INDEX_GET_CLASS (index);
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if (index->resolver) {
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success = index->resolver (index, writer, id, &writer_string, index->resolver_user_data);
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else {
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*id = entry->id;
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}
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if (iclass->resolve_writer) {
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success = iclass->resolve_writer (index, writer, id, &writer_string);
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}
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return success;
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return TRUE;
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}
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/**
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@ -462,7 +498,7 @@ gst_index_add_association (GstIndex *index, gint id, GstAssocFlags flags,
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g_return_val_if_fail (GST_IS_INDEX (index), NULL);
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g_return_val_if_fail (format != 0, NULL);
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if (!GST_INDEX_IS_WRITABLE (index))
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if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
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return NULL;
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va_start (args, value);
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@ -528,7 +564,7 @@ GstIndexEntry*
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gst_index_add_object (GstIndex *index, gint id, gchar *key,
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GType type, gpointer object)
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{
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if (!GST_INDEX_IS_WRITABLE (index))
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if (!GST_INDEX_IS_WRITABLE (index) || id == -1)
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return NULL;
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return NULL;
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@ -563,6 +599,9 @@ gst_index_get_assoc_entry (GstIndex *index, gint id,
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{
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g_return_val_if_fail (GST_IS_INDEX (index), NULL);
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if (id == -1)
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return NULL;
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return gst_index_get_assoc_entry_full (index, id, method, flags, format, value,
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gst_index_compare_func, NULL);
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}
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@ -595,6 +634,9 @@ gst_index_get_assoc_entry_full (GstIndex *index, gint id,
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g_return_val_if_fail (GST_IS_INDEX (index), NULL);
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if (id == -1)
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return NULL;
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iclass = GST_INDEX_GET_CLASS (index);
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if (iclass->get_assoc_entry)
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@ -84,6 +84,8 @@ typedef enum {
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#define GST_INDEX_FORMAT_FORMAT(entry) ((entry)->data.format.format)
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#define GST_INDEX_FORMAT_KEY(entry) ((entry)->data.format.key)
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#define GST_INDEX_ID_INVALID (-1)
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#define GST_INDEX_ID_DESCRIPTION(entry) ((entry)->data.id.description)
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struct _GstIndexEntry {
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@ -131,7 +133,6 @@ typedef gboolean (*GstIndexFilter) (GstIndex *index,
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typedef gboolean (*GstIndexResolver) (GstIndex *index,
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GstObject *writer,
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gint *writer_id,
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gchar **writer_string,
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gpointer user_data);
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typedef enum {
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@ -166,8 +167,7 @@ struct _GstIndex {
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struct _GstIndexClass {
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GstObjectClass parent_class;
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gboolean (*resolve_writer) (GstIndex *index, GstObject *writer,
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gint *writer_id, gchar **writer_string);
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gboolean (*get_writer_id) (GstIndex *index, gint *writer_id, gchar *writer_string);
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void (*commit) (GstIndex *index, gint id);
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@ -126,8 +126,7 @@ gst_file_index_get_property (GObject *object,
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GParamSpec *pspec);
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static gboolean
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gst_file_index_resolve_writer (GstIndex *_index, GstObject *writer,
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gint *id, gchar **writer_string);
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gst_file_index_get_writer_id (GstIndex *_index, gint *id, gchar *writer_string);
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static void gst_file_index_commit (GstIndex *index, gint writer_id);
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static void gst_file_index_add_entry (GstIndex *index, GstIndexEntry *entry);
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@ -182,7 +181,7 @@ gst_file_index_class_init (GstFileIndexClass *klass)
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gstindex_class->add_entry = gst_file_index_add_entry;
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gstindex_class->get_assoc_entry = gst_file_index_get_assoc_entry;
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gstindex_class->commit = gst_file_index_commit;
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gstindex_class->resolve_writer = gst_file_index_resolve_writer;
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gstindex_class->get_writer_id = gst_file_index_get_writer_id ;
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g_object_class_install_property (gobject_class, ARG_LOCATION,
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g_param_spec_string ("location", "File Location",
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@ -212,8 +211,8 @@ gst_file_index_dispose (GObject *object)
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}
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static gboolean
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gst_file_index_resolve_writer (GstIndex *_index, GstObject *writer,
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gint *id, gchar **writer_string)
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gst_file_index_get_writer_id (GstIndex *_index,
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gint *id, gchar *writer_string)
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{
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GstFileIndex *index = GST_FILE_INDEX (_index);
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GSList *pending = index->unresolved;
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@ -225,23 +224,22 @@ gst_file_index_resolve_writer (GstIndex *_index, GstObject *writer,
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g_return_val_if_fail (id, FALSE);
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g_return_val_if_fail (writer_string, FALSE);
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g_return_val_if_fail (*writer_string, FALSE);
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index->unresolved = NULL;
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for (elem = pending; elem; elem = g_slist_next (elem)) {
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GstFileIndexId *ii = elem->data;
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if (strcmp (ii->id_desc, *writer_string) != 0) {
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if (strcmp (ii->id_desc, writer_string) != 0) {
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index->unresolved = g_slist_prepend (index->unresolved, ii);
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continue;
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}
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if (match) {
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g_warning ("Duplicate matches for writer '%s'", *writer_string);
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g_warning ("Duplicate matches for writer '%s'", writer_string);
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continue;
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}
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//g_warning ("resolve %d %s", *id, *writer_string);
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//g_warning ("resolve %d %s", *id, writer_string);
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ii->id = *id;
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g_hash_table_insert (index->id_index, id, ii);
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match = TRUE;
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@ -126,8 +126,7 @@ gst_file_index_get_property (GObject *object,
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GParamSpec *pspec);
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static gboolean
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gst_file_index_resolve_writer (GstIndex *_index, GstObject *writer,
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gint *id, gchar **writer_string);
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gst_file_index_get_writer_id (GstIndex *_index, gint *id, gchar *writer_string);
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static void gst_file_index_commit (GstIndex *index, gint writer_id);
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static void gst_file_index_add_entry (GstIndex *index, GstIndexEntry *entry);
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@ -182,7 +181,7 @@ gst_file_index_class_init (GstFileIndexClass *klass)
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gstindex_class->add_entry = gst_file_index_add_entry;
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gstindex_class->get_assoc_entry = gst_file_index_get_assoc_entry;
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gstindex_class->commit = gst_file_index_commit;
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gstindex_class->resolve_writer = gst_file_index_resolve_writer;
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gstindex_class->get_writer_id = gst_file_index_get_writer_id ;
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g_object_class_install_property (gobject_class, ARG_LOCATION,
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g_param_spec_string ("location", "File Location",
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@ -212,8 +211,8 @@ gst_file_index_dispose (GObject *object)
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}
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static gboolean
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gst_file_index_resolve_writer (GstIndex *_index, GstObject *writer,
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gint *id, gchar **writer_string)
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gst_file_index_get_writer_id (GstIndex *_index,
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gint *id, gchar *writer_string)
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{
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GstFileIndex *index = GST_FILE_INDEX (_index);
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GSList *pending = index->unresolved;
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@ -225,23 +224,22 @@ gst_file_index_resolve_writer (GstIndex *_index, GstObject *writer,
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g_return_val_if_fail (id, FALSE);
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g_return_val_if_fail (writer_string, FALSE);
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g_return_val_if_fail (*writer_string, FALSE);
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index->unresolved = NULL;
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for (elem = pending; elem; elem = g_slist_next (elem)) {
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GstFileIndexId *ii = elem->data;
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if (strcmp (ii->id_desc, *writer_string) != 0) {
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if (strcmp (ii->id_desc, writer_string) != 0) {
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index->unresolved = g_slist_prepend (index->unresolved, ii);
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continue;
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}
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if (match) {
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g_warning ("Duplicate matches for writer '%s'", *writer_string);
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g_warning ("Duplicate matches for writer '%s'", writer_string);
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continue;
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}
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//g_warning ("resolve %d %s", *id, *writer_string);
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//g_warning ("resolve %d %s", *id, writer_string);
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ii->id = *id;
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g_hash_table_insert (index->id_index, id, ii);
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match = TRUE;
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