*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
- * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
*/
#ifndef __GST_EBML_READ_H__
#define __GST_EBML_READ_H__
-#include <glib.h>
#include <gst/gst.h>
-#include <gst/bytestream/bytestream.h>
+#include <gst/base/gstbytereader.h>
G_BEGIN_DECLS
+
#define GST_TYPE_EBML_READ \
(gst_ebml_read_get_type ())
#define GST_EBML_READ(obj) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_EBML_READ, GstEbmlReadClass))
#define GST_IS_EBML_READ(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_EBML_READ))
-#define GST_IS_EBML_READ_CLASS(obj) \
+#define GST_IS_EBML_READ_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_EBML_READ))
#define GST_EBML_READ_GET_CLASS(obj) \
(G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_EBML_READ, GstEbmlReadClass))
- typedef struct _GstEbmlLevel
+
+GST_DEBUG_CATEGORY_EXTERN (ebmlread_debug);
+
+/* custom flow return code */
+#define GST_FLOW_PARSE GST_FLOW_CUSTOM_ERROR
+
+typedef struct _GstEbmlMaster {
+ guint64 offset;
+ GstByteReader br;
+} GstEbmlMaster;
+
+typedef struct _GstEbmlRead {
+ GstElement *el;
+
+ GstBuffer *buf;
+ guint64 offset;
+ GstMapInfo map;
+
+ GArray *readers;
+} GstEbmlRead;
+
+typedef GstFlowReturn (*GstPeekData) (gpointer * context, guint peek, const guint8 ** data);
+
+/* returns UNEXPECTED if not enough data */
+GstFlowReturn gst_ebml_peek_id_length (guint32 * _id, guint64 * _length,
+ guint * _needed,
+ GstPeekData peek, gpointer * ctx,
+ GstElement * el, guint64 offset);
+
+void gst_ebml_read_init (GstEbmlRead * ebml,
+ GstElement * el, GstBuffer * buf,
+ guint64 offset);
+
+void gst_ebml_read_clear (GstEbmlRead * ebml);
+
+GstFlowReturn gst_ebml_peek_id (GstEbmlRead * ebml, guint32 * id);
+
+/* return _PARSE if not enough data to read what is needed, _ERROR or _OK */
+GstFlowReturn gst_ebml_read_skip (GstEbmlRead *ebml);
+
+GstFlowReturn gst_ebml_read_buffer (GstEbmlRead *ebml,
+ guint32 *id,
+ GstBuffer **buf);
+
+GstFlowReturn gst_ebml_read_uint (GstEbmlRead *ebml,
+ guint32 *id,
+ guint64 *num);
+
+GstFlowReturn gst_ebml_read_sint (GstEbmlRead *ebml,
+ guint32 *id,
+ gint64 *num);
+
+GstFlowReturn gst_ebml_read_float (GstEbmlRead *ebml,
+ guint32 *id,
+ gdouble *num);
+
+GstFlowReturn gst_ebml_read_ascii (GstEbmlRead *ebml,
+ guint32 *id,
+ gchar **str);
+
+GstFlowReturn gst_ebml_read_utf8 (GstEbmlRead *ebml,
+ guint32 *id,
+ gchar **str);
+
+GstFlowReturn gst_ebml_read_date (GstEbmlRead *ebml,
+ guint32 *id,
+ gint64 *date);
+
+GstFlowReturn gst_ebml_read_master (GstEbmlRead *ebml,
+ guint32 *id);
+
+GstFlowReturn gst_ebml_read_pop_master (GstEbmlRead *ebml);
+
+GstFlowReturn gst_ebml_read_binary (GstEbmlRead *ebml,
+ guint32 *id,
+ guint8 **binary,
+ guint64 *length);
+
+GstFlowReturn gst_ebml_read_header (GstEbmlRead *read,
+ gchar **doctype,
+ guint *version);
+
+/* Returns current (absolute) position of Ebml parser,
+ * i.e. taking into account offset provided at init */
+static inline guint64
+gst_ebml_read_get_pos (GstEbmlRead * ebml)
{
- guint64 start, length;
-} GstEbmlLevel;
+ GstEbmlMaster *m;
+
+ g_return_val_if_fail (ebml->readers, 0);
+ g_return_val_if_fail (ebml->readers->len, 0);
-typedef struct _GstEbmlRead
+ m = &(g_array_index (ebml->readers, GstEbmlMaster, ebml->readers->len - 1));
+ return m->offset + gst_byte_reader_get_pos (&m->br);
+}
+
+/* Returns starting offset of Ebml parser */
+static inline guint64
+gst_ebml_read_get_offset (GstEbmlRead * ebml)
{
- GstElement parent;
+ return ebml->offset;
+}
- GstPad *sinkpad;
- GstByteStream *bs;
+static inline GstByteReader *
+gst_ebml_read_br (GstEbmlRead * ebml)
+{
+ g_return_val_if_fail (ebml->readers, NULL);
+ g_return_val_if_fail (ebml->readers->len, NULL);
- GList *level;
-} GstEbmlRead;
+ return &(g_array_index (ebml->readers,
+ GstEbmlMaster, ebml->readers->len - 1).br);
+}
-typedef struct _GstEbmlReadClass
+static inline gboolean
+gst_ebml_read_has_remaining (GstEbmlRead * ebml, guint64 bytes_needed,
+ gboolean auto_pop)
{
- GstElementClass parent;
-} GstEbmlReadClass;
-
-GType gst_ebml_read_get_type (void);
-
-guint32 gst_ebml_peek_id (GstEbmlRead * ebml, guint * level_up);
-GstEvent *gst_ebml_read_seek (GstEbmlRead * ebml, guint64 offset);
-gboolean gst_ebml_read_skip (GstEbmlRead * ebml);
-gboolean gst_ebml_read_buffer (GstEbmlRead * ebml,
- guint32 * id, GstBuffer ** buf);
-gboolean gst_ebml_read_uint (GstEbmlRead * ebml, guint32 * id, guint64 * num);
-gboolean gst_ebml_read_sint (GstEbmlRead * ebml, guint32 * id, gint64 * num);
-gboolean gst_ebml_read_float (GstEbmlRead * ebml, guint32 * id, gdouble * num);
-gboolean gst_ebml_read_ascii (GstEbmlRead * ebml, guint32 * id, gchar ** str);
-gboolean gst_ebml_read_utf8 (GstEbmlRead * ebml, guint32 * id, gchar ** str);
-gboolean gst_ebml_read_date (GstEbmlRead * ebml, guint32 * id, gint64 * date);
-gboolean gst_ebml_read_master (GstEbmlRead * ebml, guint32 * id);
-gboolean gst_ebml_read_binary (GstEbmlRead * ebml,
- guint32 * id, guint8 ** binary, guint64 * length);
-gboolean gst_ebml_read_header (GstEbmlRead * read,
- gchar ** doctype, guint * version);
+ gboolean res;
+
+ res = (gst_byte_reader_get_remaining (gst_ebml_read_br (ebml)) >= bytes_needed);
+ if (G_LIKELY (!res && auto_pop)) {
+ gst_ebml_read_pop_master (ebml);
+ }
+
+ return G_LIKELY (res);
+}
G_END_DECLS
+
#endif /* __GST_EBML_READ_H__ */
projects / platform / upstream / gst-plugins-good.git / blobdiff