mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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added gst_{props,caps}_{from,to}_string to API, see documentation for use, put errors into testsuite/caps/string-conv...
Original commit message from CVS:
added gst_{props,caps}_{from,to}_string to API, see documentation for use, put errors into testsuite/caps/string-conversions.c
This commit is contained in:
Benjamin Otte
parent
75ec036895
commit
f13198c52b
4 changed files with 597 additions and 74 deletions
130
gst/gstcaps.c
130
gst/gstcaps.c
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@ -20,7 +20,6 @@
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* Boston, MA 02111-1307, USA.
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*/
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/* #define GST_DEBUG_ENABLED */
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#include "gst_private.h"
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#include "gstcaps.h"
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@ -39,37 +38,131 @@ static GstMemChunk *_gst_caps_chunk;
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GType _gst_caps_type;
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extern GstProps * __gst_props_from_string_func (gchar *s, gchar **end, gboolean caps);
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extern gboolean __gst_props_parse_string (gchar *r, gchar **end, gchar **next);
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/* transform functions */
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static void gst_caps_transform_to_string (const GValue *src_value, GValue *dest_value);
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static void
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transform_func (const GValue *src_value,
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GValue *dest_value)
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gst_caps_transform_to_string (const GValue *src_value, GValue *dest_value)
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{
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GstCaps *caps = g_value_peek_pointer (src_value);
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GString *result = g_string_new ("");
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dest_value->data[0].v_pointer = gst_caps_to_string (caps);
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}
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/**
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* gst_caps_to_string:
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* caps: the caps to convert to a string
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*
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* Converts a #GstCaps into a readable format. This is mainly intended for
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* debugging purposes. You have to free the string using g_free.
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* A string converted with #gst_caps_to_string can always be converted back to
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* its caps representation using #gst_caps_from_string.
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*
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* Returns: A newly allocated string
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*/
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gchar *
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gst_caps_to_string (GstCaps *caps)
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{
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gchar *ret;
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GString *result;
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g_return_val_if_fail (caps != NULL, NULL);
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result = g_string_new ("");
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g_string_append_printf (result, "(GstCaps *) ");
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while (caps) {
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gchar *props;
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GValue value = { 0, }; /* the important thing is that value.type = 0 */
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g_string_append_printf (result,
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"{ %s; ", gst_caps_get_mime (caps));
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g_string_append_printf (result, "\"%s\"", gst_caps_get_mime (caps));
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g_value_init (&value, GST_TYPE_PROPS);
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g_value_set_boxed (&value, caps->properties);
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props = g_strdup_value_contents (&value);
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if (caps->properties) {
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g_value_init (&value, GST_TYPE_PROPS);
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g_value_set_boxed (&value, caps->properties);
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props = g_strdup_value_contents (&value);
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g_value_unset (&value);
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g_string_append (result, props);
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g_free (props);
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g_value_unset (&value);
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g_string_append (result, ", ");
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g_string_append (result, props);
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g_free (props);
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}
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caps = caps->next;
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g_string_append_printf (result, " }%s", (caps ? ", " : ""));
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if (caps)
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g_string_append (result, "; ");
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}
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dest_value->data[0].v_pointer = result->str;
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ret = result->str;
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g_string_free (result, FALSE);
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return ret;
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}
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static GstCaps *
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gst_caps_from_string_func (gchar *r)
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{
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gchar *mime, *w;
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GstCaps *caps, *append;
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GstProps *props = NULL;
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mime = r;
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if (!__gst_props_parse_string (r, &w, &r)) goto error;
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if (*r == '\0') goto found;
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if (*r++ != ',') goto error;
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while (g_ascii_isspace (*r)) r++;
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props = __gst_props_from_string_func (r, &r, TRUE);
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if (!props) goto error;
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found:
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*w = '\0';
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if (*mime == '\0') {
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gst_props_unref (props);
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goto error;
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}
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caps = gst_caps_new ("parsed caps", mime, props);
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if (*r == '\0')
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return caps;
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while (g_ascii_isspace (*r)) r++;
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if (*r == ';') {
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r++;
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while (g_ascii_isspace (*r)) r++;
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append = gst_caps_from_string_func (r);
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if (!append) {
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gst_caps_unref (caps);
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goto error;
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}
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gst_caps_append (caps, append);
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}
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return caps;
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error:
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return NULL;
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}
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/**
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* gst_caps_from_string:
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* str: the str to convert into caps
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*
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* Tries to convert a string into a #GstCaps. This is mainly intended for
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* debugging purposes. The returned caps are floating.
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*
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* Returns: A floating caps or NULL if the string couldn't be converted
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*/
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GstCaps *
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gst_caps_from_string (gchar *str)
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{
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gchar *s;
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GstCaps *caps;
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g_return_val_if_fail (str != NULL, NULL);
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s = g_strdup (str);
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caps = gst_caps_from_string_func (s);
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g_free (s);
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return caps;
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}
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void
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_gst_caps_initialize (void)
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{
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@ -81,9 +174,8 @@ _gst_caps_initialize (void)
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(GBoxedCopyFunc) gst_caps_ref,
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(GBoxedFreeFunc) gst_caps_unref);
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g_value_register_transform_func (_gst_caps_type,
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G_TYPE_STRING,
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transform_func);
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g_value_register_transform_func (_gst_caps_type, G_TYPE_STRING,
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gst_caps_transform_to_string);
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#ifndef GST_DISABLE_TRACE
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_gst_caps_trace = gst_alloc_trace_register (GST_CAPS_TRACE_NAME);
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@ -192,6 +192,10 @@ xmlNodePtr gst_caps_save_thyself (GstCaps *caps, xmlNodePtr parent);
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GstCaps* gst_caps_load_thyself (xmlNodePtr parent);
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#endif
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/* for debugging purposes */
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gchar * gst_caps_to_string (GstCaps *caps);
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GstCaps * gst_caps_from_string (gchar *str);
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G_END_DECLS
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#endif /* __GST_CAPS_H__ */
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534
gst/gstprops.c
534
gst/gstprops.c
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@ -20,7 +20,6 @@
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* Boston, MA 02111-1307, USA.
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*/
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/* #define GST_DEBUG_ENABLED */
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#include "gst_private.h"
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#include "gstlog.h"
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@ -71,63 +70,490 @@ struct _GstPropsEntry {
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static GstMemChunk *_gst_props_entries_chunk;
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static GstMemChunk *_gst_props_chunk;
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/* transform functions */
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static void gst_props_transform_to_string (const GValue *src_value, GValue *dest_value);
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static gchar * gst_props_entry_to_string (GstPropsEntry *entry);
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gboolean __gst_props_parse_string (gchar *r, gchar **end, gchar **next);
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static gboolean gst_props_entry_check_compatibility (GstPropsEntry *entry1, GstPropsEntry *entry2);
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static GList* gst_props_list_copy (GList *propslist);
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static void
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transform_func (const GValue *src_value,
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GValue *dest_value)
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static GstPropsEntry* gst_props_alloc_entry (void);
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static gchar *
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gst_props_entry_to_string (GstPropsEntry *entry)
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{
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GstProps *props = g_value_peek_pointer (src_value);
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GString *result = g_string_new ("");
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if (props) {
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GList *propslist = props->properties;
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while (propslist) {
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GstPropsEntry *entry = (GstPropsEntry *)propslist->data;
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const gchar *name = g_quark_to_string (entry->propid);
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switch (entry->propstype) {
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case GST_PROPS_INT_TYPE:
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g_string_append_printf (result, "%s=(int) %d", name, entry->data.int_data);
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break;
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case GST_PROPS_FLOAT_TYPE:
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g_string_append_printf (result, "%s=(float) %f", name, entry->data.float_data);
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break;
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case GST_PROPS_FOURCC_TYPE:
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g_string_append_printf (result, "%s=(fourcc) '%4.4s'", name, (gchar *)&entry->data.fourcc_data);
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break;
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case GST_PROPS_BOOLEAN_TYPE:
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g_string_append_printf (result, "%s=(boolean) %s", name,
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(entry->data.bool_data ? "TRUE" : "FALSE"));
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break;
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case GST_PROPS_STRING_TYPE:
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g_string_append_printf (result, "%s=(string) '%s'", name, entry->data.string_data.string);
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break;
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case GST_PROPS_INT_RANGE_TYPE:
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g_string_append_printf (result, "%s=(int range) %d-%d", name,
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entry->data.int_range_data.min, entry->data.int_range_data.max);
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break;
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case GST_PROPS_FLOAT_RANGE_TYPE:
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g_string_append_printf (result, "%s=(float range) %f-%f", name,
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entry->data.float_range_data.min, entry->data.float_range_data.max);
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break;
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case GST_PROPS_LIST_TYPE:
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g_string_append_printf (result, "%s=(list) %p", name, entry->data.list_data.entries);
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break;
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default:
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break;
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}
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propslist = g_list_next (propslist);
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if (propslist) {
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g_string_append (result, "; ");
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switch (entry->propstype) {
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case GST_PROPS_INT_TYPE:
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return g_strdup_printf ("int = %d", entry->data.int_data);
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case GST_PROPS_FLOAT_TYPE:
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return g_strdup_printf ("float = %f", entry->data.float_data);
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break;
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case GST_PROPS_FOURCC_TYPE: {
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gchar fourcc[5] = { GST_FOURCC_ARGS (entry->data.fourcc_data), '\0' }; /* Do all compilers understand that? */
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if (g_ascii_isalnum(fourcc[1]) && g_ascii_isalnum(fourcc[2]) &&
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g_ascii_isalnum(fourcc[3]) && g_ascii_isalnum(fourcc[4])) {
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return g_strdup_printf ("fourcc = %s", fourcc);
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} else {
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return g_strdup_printf ("fourcc = %d", entry->data.fourcc_data);
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}
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}
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case GST_PROPS_BOOLEAN_TYPE:
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return g_strdup_printf ("bool = %s", (entry->data.bool_data ? "TRUE" : "FALSE"));
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case GST_PROPS_STRING_TYPE:
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/* FIXME: Need to escape stuff here */
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return g_strdup_printf ("string = '%s'", entry->data.string_data.string);
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case GST_PROPS_INT_RANGE_TYPE:
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return g_strdup_printf ("int = [%d, %d]", entry->data.int_range_data.min, entry->data.int_range_data.max);
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case GST_PROPS_FLOAT_RANGE_TYPE:
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return g_strdup_printf ("float = [%f, %f]", entry->data.float_range_data.min, entry->data.float_range_data.max);
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case GST_PROPS_LIST_TYPE: {
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GList *walk;
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GString *s;
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gchar *temp;
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s = g_string_new ("list = (");
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walk = entry->data.list_data.entries;
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while (walk) {
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temp = gst_props_entry_to_string ((GstPropsEntry *) walk->data);
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g_string_append (s, temp);
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walk = walk->next;
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if (walk) {
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g_string_append (s, ", ");
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} else {
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g_string_append (s, ")");
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}
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g_free (temp);
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}
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temp = s->str;
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g_string_free (s, FALSE);
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return temp;
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}
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default:
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/* transforms always succeed */
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g_assert_not_reached();
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return NULL;
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}
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dest_value->data[0].v_pointer = result->str;
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g_string_free (result, FALSE);
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}
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/**
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* gst_props_to_string:
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* props: the props to convert to a string
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*
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* Converts a #GstProps into a readable format. This is mainly intended for
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* debugging purposes. You have to free the string using g_free.
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* A string converted with #gst_props_to_string can always be converted back to
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* its props representation using #gst_props_from_string.
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*
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* Returns: A newly allocated string
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*/
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gchar *
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gst_props_to_string (GstProps *props)
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{
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GString *s;
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gchar *temp;
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GList *propslist;
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s = g_string_new ("");
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propslist = props->properties;
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while (propslist) {
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GstPropsEntry *entry = (GstPropsEntry *)propslist->data;
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const gchar *name = g_quark_to_string (entry->propid);
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temp = gst_props_entry_to_string (entry);
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propslist = g_list_next (propslist);
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if (temp) {
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if (propslist) {
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g_string_append_printf (s, "%s:%s, ", name, temp);
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} else {
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g_string_append_printf (s, "%s:%s", name, temp);
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}
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g_free (temp);
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}
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}
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temp = s->str;
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g_string_free (s, FALSE);
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return temp;
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}
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static void
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gst_props_transform_to_string (const GValue *src_value, GValue *dest_value)
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{
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GstProps *props = g_value_peek_pointer (src_value);
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if (props)
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dest_value->data[0].v_pointer = gst_props_to_string (props);
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}
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/**
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* r will still point to the string. if end == next, the string will not be
|
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* null-terminated. In all other cases it will be.
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* end = pointer to char behind end of string, next = pointer to start of
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* unread data.
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* THIS FUNCTION MODIFIES THE STRING AND DETECTS INSIDE A NONTERMINATED STRING
|
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*/
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gboolean
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__gst_props_parse_string (gchar *r, gchar **end, gchar **next)
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{
|
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gchar *w;
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gchar c = '\0';
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w = r;
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if (*r == '\'' || *r == '\"') {
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c = *r;
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r++;
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}
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for (;;r++) {
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if (*r == '\0') {
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if (c) {
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goto error;
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} else {
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goto found;
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}
|
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}
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|
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if (*r == '\\') {
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r++;
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if (*r == '\0')
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goto error;
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*w++ = *r;
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continue;
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}
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|
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if (*r == c) {
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r++;
|
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if (*r == '\0')
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goto found;
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||||
break;
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}
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|
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if (!c) {
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if (g_ascii_isspace (*r))
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break;
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/* this needs to be escaped */
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if (*r == ',' || *r == ')' || *r == ']' || *r == ':' ||
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*r == ';' || *r == '(' || *r == '[')
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break;
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}
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*w++ = *r;
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}
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found:
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while (g_ascii_isspace (*r)) r++;
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if (w != r)
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*w++ = '\0';
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*end = w;
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*next = r;
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return TRUE;
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|
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error:
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return FALSE;
|
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}
|
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static GstPropsEntry *
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gst_props_entry_from_string_no_name (gchar *s, gchar **after, gboolean has_type)
|
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{
|
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GstPropsEntry *entry;
|
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gchar org = '\0';
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gchar *end, *next, *check = s;
|
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GstPropsType type = GST_PROPS_INVALID_TYPE;
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/* [TYPE=]VALUE */
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/**
|
||||
* valid type identifiers case insensitive:
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||||
* INT: "i", "int"
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* FLOAT: "f", "float"
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* FOURCC: "4", "fourcc"
|
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* BOOLEAN: "b", "bool", "boolean"
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* STRING: "s", "str", "string"
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* lists/ranges are identified by the value
|
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*/
|
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if (g_ascii_tolower (s[0]) == 'i') {
|
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type = GST_PROPS_INT_TYPE;
|
||||
if (g_ascii_tolower (s[1]) == 'n' && g_ascii_tolower (s[2]) == 't') {
|
||||
check = s + 3;
|
||||
} else {
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check = s + 1;
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||||
}
|
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} else if (g_ascii_tolower (s[0]) == 'f') {
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type = GST_PROPS_FLOAT_TYPE;
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if (g_ascii_tolower (s[1]) == 'l' && g_ascii_tolower (s[2]) == 'o' &&
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g_ascii_tolower (s[3]) == 'a' && g_ascii_tolower (s[4]) == 't') {
|
||||
check = s + 5;
|
||||
} else if (g_ascii_tolower (s[1]) == 'o' && g_ascii_tolower (s[2]) == 'u' &&
|
||||
g_ascii_tolower (s[3]) == 'r' && g_ascii_tolower (s[4]) == 'c' &&
|
||||
g_ascii_tolower (s[5]) == 'c') {
|
||||
check = s + 6;
|
||||
type = GST_PROPS_FOURCC_TYPE;
|
||||
} else {
|
||||
check = s + 1;
|
||||
}
|
||||
} else if (g_ascii_tolower (s[0]) == '4') {
|
||||
type = GST_PROPS_FOURCC_TYPE;
|
||||
check = s + 1;
|
||||
} else if (g_ascii_tolower (s[0]) == 'b') {
|
||||
type = GST_PROPS_BOOLEAN_TYPE;
|
||||
if (g_ascii_tolower (s[1]) == 'o' && g_ascii_tolower (s[2]) == 'o' &&
|
||||
g_ascii_tolower (s[3]) == 'l') {
|
||||
if (g_ascii_tolower (s[4]) == 'e' && g_ascii_tolower (s[5]) == 'a' &&
|
||||
g_ascii_tolower (s[6]) == 'n') {
|
||||
check = s + 7;
|
||||
} else {
|
||||
check = s + 4;
|
||||
}
|
||||
} else {
|
||||
check = s + 1;
|
||||
}
|
||||
} else if (g_ascii_tolower (s[0]) == 's') {
|
||||
type = GST_PROPS_STRING_TYPE;
|
||||
if (g_ascii_tolower (s[1]) == 't' && g_ascii_tolower (s[2]) == 'r') {
|
||||
if (g_ascii_tolower (s[3]) == 'i' && g_ascii_tolower (s[4]) == 'n' &&
|
||||
g_ascii_tolower (s[5]) == 'g') {
|
||||
check = s + 6;
|
||||
} else {
|
||||
check = s + 3;
|
||||
}
|
||||
} else {
|
||||
check = s + 1;
|
||||
}
|
||||
} else if (g_ascii_tolower (s[0]) == 'l') {
|
||||
type = GST_PROPS_LIST_TYPE;
|
||||
if (g_ascii_tolower (s[1]) == 'i' && g_ascii_tolower (s[2]) == 's' &&
|
||||
g_ascii_tolower (s[3]) == 't') {
|
||||
check = s + 4;
|
||||
} else {
|
||||
check = s + 1;
|
||||
}
|
||||
}
|
||||
while (g_ascii_isspace(*check)) check++;
|
||||
if (*check != '=') {
|
||||
if (has_type) goto error;
|
||||
type = GST_PROPS_INVALID_TYPE;
|
||||
check = s;
|
||||
} else {
|
||||
check++;
|
||||
while (g_ascii_isspace(*check)) check++;
|
||||
}
|
||||
/* ok. Now type is GST_PROPS_INVALID_TYPE for guessing or the selected type.
|
||||
check points to the string containing the contents. s still is the beginning
|
||||
of the string */
|
||||
if (type == GST_PROPS_INVALID_TYPE || type == GST_PROPS_INT_TYPE || type == GST_PROPS_FOURCC_TYPE) {
|
||||
glong l;
|
||||
l = strtol (check, &end, 0);
|
||||
while (g_ascii_isspace (*end)) end++;
|
||||
if (*end == '\0' || *end == ',' || *end == ';' || *end == ')' || *end == ']') {
|
||||
*after = end;
|
||||
entry = gst_props_alloc_entry ();
|
||||
if (type == GST_PROPS_FOURCC_TYPE) {
|
||||
entry->propstype = GST_PROPS_FOURCC_TYPE;
|
||||
entry->data.fourcc_data = l;
|
||||
} else {
|
||||
entry->propstype = GST_PROPS_INT_TYPE;
|
||||
entry->data.int_data = l;
|
||||
}
|
||||
return entry;
|
||||
}
|
||||
}
|
||||
if (type == GST_PROPS_INVALID_TYPE || type == GST_PROPS_FLOAT_TYPE) {
|
||||
gdouble d;
|
||||
d = strtod (check, &end);
|
||||
while (g_ascii_isspace (*end)) end++;
|
||||
if (*end == '\0' || *end == ',' || *end == ';' || *end == ')' || *end == ']') {
|
||||
*after = end;
|
||||
entry = gst_props_alloc_entry ();
|
||||
entry->propstype = GST_PROPS_FLOAT_TYPE;
|
||||
entry->data.float_data = d;
|
||||
return entry;
|
||||
}
|
||||
}
|
||||
if ((type == GST_PROPS_INVALID_TYPE || type == GST_PROPS_FLOAT_TYPE ||
|
||||
type == GST_PROPS_INT_TYPE) && *check == '[') {
|
||||
GstPropsEntry *min, *max;
|
||||
check++;
|
||||
if (g_ascii_isspace (*check)) check++;
|
||||
min = gst_props_entry_from_string_no_name (check, &check, FALSE);
|
||||
if (!min) goto error;
|
||||
if (*check++ != ',') goto error;
|
||||
if (g_ascii_isspace (*check)) check++;
|
||||
max = gst_props_entry_from_string_no_name (check, &check, FALSE);
|
||||
if (!max || *check++ != ']') {
|
||||
gst_props_entry_destroy (min);
|
||||
goto error;
|
||||
}
|
||||
if (g_ascii_isspace (*check)) check++;
|
||||
entry = gst_props_alloc_entry ();
|
||||
entry->propstype = GST_PROPS_FLOAT_RANGE_TYPE;
|
||||
if (min->propstype == GST_PROPS_INT_TYPE && max->propstype == GST_PROPS_INT_TYPE && type != GST_PROPS_FLOAT_TYPE) {
|
||||
entry->propstype = GST_PROPS_INT_RANGE_TYPE;
|
||||
entry->data.int_range_data.min = min->data.int_data;
|
||||
entry->data.int_range_data.max = max->data.int_data;
|
||||
} else if (min->propstype == GST_PROPS_INT_TYPE && max->propstype == GST_PROPS_INT_TYPE && type == GST_PROPS_FLOAT_TYPE) {
|
||||
entry->data.float_range_data.min = min->data.int_data;
|
||||
entry->data.float_range_data.max = max->data.int_data;
|
||||
} else if (min->propstype == GST_PROPS_INT_TYPE && max->propstype == GST_PROPS_FLOAT_TYPE && type != GST_PROPS_INT_TYPE) {
|
||||
entry->data.float_range_data.min = min->data.int_data;
|
||||
entry->data.float_range_data.max = max->data.float_data;
|
||||
} else if (min->propstype == GST_PROPS_FLOAT_TYPE && max->propstype == GST_PROPS_INT_TYPE && type != GST_PROPS_INT_TYPE) {
|
||||
entry->data.float_range_data.min = min->data.float_data;
|
||||
entry->data.float_range_data.max = max->data.int_data;
|
||||
} else if (min->propstype == GST_PROPS_FLOAT_TYPE && max->propstype == GST_PROPS_FLOAT_TYPE && type != GST_PROPS_INT_TYPE) {
|
||||
entry->data.float_range_data.min = min->data.float_data;
|
||||
entry->data.float_range_data.max = max->data.float_data;
|
||||
} else {
|
||||
gst_props_entry_destroy (min);
|
||||
gst_props_entry_destroy (max);
|
||||
gst_props_entry_destroy (entry);
|
||||
goto error;
|
||||
}
|
||||
gst_props_entry_destroy (min);
|
||||
gst_props_entry_destroy (max);
|
||||
*after = check;
|
||||
return entry;
|
||||
}
|
||||
if ((type == GST_PROPS_INVALID_TYPE || type == GST_PROPS_LIST_TYPE) && *check == '(') {
|
||||
GstPropsEntry *next;
|
||||
check++;
|
||||
entry = gst_props_alloc_entry ();
|
||||
entry->propstype = GST_PROPS_LIST_TYPE;
|
||||
entry->data.list_data.entries = NULL;
|
||||
do {
|
||||
while (g_ascii_isspace (*check)) check++;
|
||||
next = gst_props_entry_from_string_no_name (check, &check, FALSE);
|
||||
/* use g_list_append to keep original order */
|
||||
entry->data.list_data.entries = g_list_append (entry->data.list_data.entries, next);
|
||||
if (*check == ')') break;
|
||||
if (*check++ != ',') goto error;
|
||||
} while (TRUE);
|
||||
*check++;
|
||||
while (g_ascii_isspace (*check)) check++;
|
||||
*after = check;
|
||||
return entry;
|
||||
}
|
||||
if (!__gst_props_parse_string (check, &next, &end))
|
||||
goto error;
|
||||
if (next == end) {
|
||||
org = *end;
|
||||
*end = '\0';
|
||||
}
|
||||
if (type == GST_PROPS_INVALID_TYPE || type == GST_PROPS_BOOLEAN_TYPE) {
|
||||
if (!(g_ascii_strcasecmp (check, "true") &&
|
||||
g_ascii_strcasecmp (check, "yes"))) {
|
||||
entry = gst_props_alloc_entry ();
|
||||
entry->propstype = GST_PROPS_BOOLEAN_TYPE;
|
||||
entry->data.bool_data = TRUE;
|
||||
goto string_out;
|
||||
}
|
||||
if (!(g_ascii_strcasecmp (check, "false") &&
|
||||
g_ascii_strcasecmp (check, "no"))) {
|
||||
entry = gst_props_alloc_entry ();
|
||||
entry->propstype = GST_PROPS_BOOLEAN_TYPE;
|
||||
entry->data.bool_data = FALSE;
|
||||
goto string_out;
|
||||
}
|
||||
}
|
||||
if (type == GST_PROPS_FOURCC_TYPE) {
|
||||
gint l = strlen (check);
|
||||
entry = gst_props_alloc_entry ();
|
||||
entry->propstype = GST_PROPS_FOURCC_TYPE;
|
||||
entry->data.fourcc_data = GST_MAKE_FOURCC(l > 0 ? check[0] : ' ',
|
||||
l > 1 ? check[1] : ' ',
|
||||
l > 2 ? check[2] : ' ',
|
||||
l > 3 ? check[3] : ' ');
|
||||
goto string_out;
|
||||
}
|
||||
if (type == GST_PROPS_INVALID_TYPE || type == GST_PROPS_STRING_TYPE) {
|
||||
entry = gst_props_alloc_entry ();
|
||||
entry->propstype = GST_PROPS_STRING_TYPE;
|
||||
entry->data.string_data.string = g_strdup (check);
|
||||
goto string_out;
|
||||
}
|
||||
error:
|
||||
return NULL;
|
||||
|
||||
string_out:
|
||||
*next = org;
|
||||
*after = end;
|
||||
return entry;
|
||||
}
|
||||
static GstPropsEntry *
|
||||
gst_props_entry_from_string (gchar *str, gchar **after)
|
||||
{
|
||||
/* NAME[:TYPE]=VALUE */
|
||||
gchar *name;
|
||||
gchar *s, *del;
|
||||
gboolean has_type = FALSE;
|
||||
GstPropsEntry *entry;
|
||||
|
||||
name = s = str;
|
||||
while (g_ascii_isalnum (*s)) s++;
|
||||
del = s;
|
||||
while (g_ascii_isspace (*s)) s++;
|
||||
if (!(*s == '=' || *s == ':')) return NULL;
|
||||
if (*s == ':') has_type = TRUE;
|
||||
s++;
|
||||
while (g_ascii_isspace (*s)) s++;
|
||||
*del = '\0';
|
||||
|
||||
entry = gst_props_entry_from_string_no_name (s, &s, has_type);
|
||||
if (entry) {
|
||||
entry->propid = g_quark_from_string (name);
|
||||
*after = s;
|
||||
}
|
||||
|
||||
return entry;
|
||||
}
|
||||
GstProps *
|
||||
__gst_props_from_string_func (gchar *s, gchar **end, gboolean caps)
|
||||
{
|
||||
GstProps *props;
|
||||
GstPropsEntry *entry;
|
||||
|
||||
props = gst_props_empty_new ();
|
||||
for (;;) {
|
||||
entry = gst_props_entry_from_string (s, &s);
|
||||
if (!entry) goto error;
|
||||
gst_props_add_entry (props, entry);
|
||||
while (g_ascii_isspace (*s)) s++;
|
||||
if ((*s == '\0') || /* end */
|
||||
(caps && (*s == ';'))) /* another caps */
|
||||
break;
|
||||
if (!(*s == ',')) goto error;
|
||||
s++;
|
||||
while (g_ascii_isspace (*s)) s++;
|
||||
}
|
||||
|
||||
*end = s;
|
||||
return props;
|
||||
error:
|
||||
gst_props_unref (props);
|
||||
return NULL;
|
||||
}
|
||||
/**
|
||||
* gst_props_from_string:
|
||||
* str: the str to convert into props
|
||||
*
|
||||
* Tries to convert a string into a #GstProps. This is mainly intended for
|
||||
* debugging purposes. The returned props are floating.
|
||||
*
|
||||
* Returns: A floating props or NULL if the string couldn't be converted
|
||||
*/
|
||||
GstProps *
|
||||
gst_props_from_string (gchar *str)
|
||||
{
|
||||
/**
|
||||
* format to parse is ENTRY[,ENTRY ...]
|
||||
* ENTRY is NAME[:TYPE]=VALUE
|
||||
* NAME is alphanumeric
|
||||
* TYPE is a list of values
|
||||
* VALUE is evil, see gst_props_entry_to_string
|
||||
*/
|
||||
GstProps *props;
|
||||
gchar *temp, *org;
|
||||
|
||||
g_return_val_if_fail (str != NULL, NULL);
|
||||
|
||||
org = g_strdup (str);
|
||||
props = __gst_props_from_string_func (org, &temp, FALSE);
|
||||
g_free (org);
|
||||
|
||||
return props;
|
||||
}
|
||||
|
||||
void
|
||||
|
|
@ -145,9 +571,8 @@ _gst_props_initialize (void)
|
|||
(GBoxedCopyFunc) gst_props_ref,
|
||||
(GBoxedFreeFunc) gst_props_unref);
|
||||
|
||||
g_value_register_transform_func (_gst_props_type,
|
||||
G_TYPE_STRING,
|
||||
transform_func);
|
||||
g_value_register_transform_func (_gst_props_type, G_TYPE_STRING,
|
||||
gst_props_transform_to_string);
|
||||
|
||||
_gst_props_entry_type = g_boxed_type_register_static ("GstPropsEntry",
|
||||
(GBoxedCopyFunc) gst_props_entry_copy,
|
||||
|
|
@ -2289,4 +2714,3 @@ gst_props_load_thyself (xmlNodePtr parent)
|
|||
return props;
|
||||
}
|
||||
#endif /* GST_DISABLE_LOADSAVE_REGISTRY */
|
||||
|
||||
|
|
|
|||
|
|
@ -189,6 +189,9 @@ gboolean gst_props_entry_get_int_range (const GstPropsEntry *entry, gint *min,
|
|||
gboolean gst_props_entry_get_float_range (const GstPropsEntry *entry, gfloat *min, gfloat *max);
|
||||
gboolean gst_props_entry_get_list (const GstPropsEntry *entry, const GList **val);
|
||||
|
||||
/* for debugging purposes */
|
||||
gchar * gst_props_to_string (GstProps *props);
|
||||
GstProps * gst_props_from_string (gchar *str);
|
||||
|
||||
#ifndef GST_DISABLE_LOADSAVE
|
||||
xmlNodePtr gst_props_save_thyself (GstProps *props, xmlNodePtr parent);
|
||||
|
|
|
|||
Loading…
Reference in a new issue