1 files changed, 106 insertions, 0 deletions
diff --git a/ext/wavpack/gstwavpackstreamreader.c b/ext/wavpack/gstwavpackstreamreader.c
new file mode 100644
index 00000000..9b3c0bfe
--- /dev/null
+++ b/ext/wavpack/gstwavpackstreamreader.c
@@ -0,0 +1,106 @@
+/* GStreamer Wavpack plugin
+ * Copyright (c) 2006 Sebastian Dröge <slomo@circular-chaos.org>
+ *
+ * gstwavpackstreamreader.c: stream reader used for decoding
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * 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.
+ */
+
+#include <string.h>
+#include <math.h>
+#include <gst/gst.h>
+
+#include "gstwavpackstreamreader.h"
+
+static int32_t
+gst_wavpack_stream_reader_read_bytes (void *id, void *data, int32_t bcount)
+{
+  read_id *rid = (read_id *) id;
+  uint32_t left = rid->length - rid->position;
+  uint32_t to_read = MIN (left, bcount);
+
+  if (to_read > 0) {
+    g_memmove (data, rid->buffer + rid->position, to_read);
+    rid->position += to_read;
+    return to_read;
+  } else {
+    return 0;
+  }
+}
+
+static uint32_t
+gst_wavpack_stream_reader_get_pos (void *id)
+{
+  return ((read_id *) id)->position;
+}
+
+static int
+gst_wavpack_stream_reader_set_pos_abs (void *id, uint32_t pos)
+{
+  return -1;
+}
+
+static int
+gst_wavpack_stream_reader_set_pos_rel (void *id, int32_t delta, int mode)
+{
+  return -1;
+}
+
+static int
+gst_wavpack_stream_reader_push_back_byte (void *id, int c)
+{
+  read_id *rid = (read_id *) id;
+
+  rid->position -= 1;
+  if (rid->position < 0)
+    rid->position = 0;
+  return rid->position;
+}
+
+static uint32_t
+gst_wavpack_stream_reader_get_length (void *id)
+{
+  return ((read_id *) id)->length;
+}
+
+static int
+gst_wavpack_stream_reader_can_seek (void *id)
+{
+  return FALSE;
+}
+
+static int32_t
+gst_wavpack_stream_reader_write_bytes (void *id, void *data, int32_t bcount)
+{
+  return 0;
+}
+
+WavpackStreamReader *
+gst_wavpack_stream_reader_new ()
+{
+  WavpackStreamReader *stream_reader =
+      (WavpackStreamReader *) g_malloc0 (sizeof (WavpackStreamReader));
+  stream_reader->read_bytes = gst_wavpack_stream_reader_read_bytes;
+  stream_reader->get_pos = gst_wavpack_stream_reader_get_pos;
+  stream_reader->set_pos_abs = gst_wavpack_stream_reader_set_pos_abs;
+  stream_reader->set_pos_rel = gst_wavpack_stream_reader_set_pos_rel;
+  stream_reader->push_back_byte = gst_wavpack_stream_reader_push_back_byte;
+  stream_reader->get_length = gst_wavpack_stream_reader_get_length;
+  stream_reader->can_seek = gst_wavpack_stream_reader_can_seek;
+  stream_reader->write_bytes = gst_wavpack_stream_reader_write_bytes;
+
+  return stream_reader;
+}