1 files changed, 112 insertions, 0 deletions
diff --git a/ext/mplex/gstmplexibitstream.cc b/ext/mplex/gstmplexibitstream.cc
new file mode 100644
index 00000000..59f913a6
--- /dev/null
+++ b/ext/mplex/gstmplexibitstream.cc
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+/* GStreamer mplex (mjpegtools) wrapper
+ * (c) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
+ *
+ * gstmplexibitstream.hh: gstreamer/mplex input bitstream wrapper
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include "gstmplexibitstream.hh"
+
+/*
+ * Class init/exit functions.
+ */
+
+GstMplexIBitStream::GstMplexIBitStream (GstPad *_pad,
+					guint   buf_size) :
+  IBitStream ()
+{
+  guint8 *data;
+
+  pad = _pad;
+  bs = gst_bytestream_new (pad);
+  eos = FALSE;
+
+  streamname = g_strdup (gst_pad_get_name (_pad));
+
+  SetBufSize (buf_size);
+  eobs = false;
+  byteidx = 0;
+
+  /* we peek 1 byte (not even caring about the return value) so we
+   * are sure that we have data and thus capsnego must be completed
+   * when we return. */
+  gst_bytestream_peek_bytes (bs, &data, 1);
+
+  if (!ReadIntoBuffer () && buffered == 0) {
+    gst_element_error (gst_pad_get_parent (_pad),
+		       "Failed to read from input stream %s",
+		       gst_pad_get_name (pad));
+  }
+}
+
+GstMplexIBitStream::~GstMplexIBitStream (void)
+{
+  gst_bytestream_destroy (bs);
+}
+
+/*
+ * Read data.
+ */
+
+size_t
+GstMplexIBitStream::ReadStreamBytes (uint8_t *buf,
+				     size_t   size)
+{
+  guint8 *data;
+  guint read;
+
+  if (eos)
+    return 0;
+
+  if ((read = gst_bytestream_peek_bytes (bs, &data, size)) != size) {
+    GstEvent *event;
+    guint pending;
+
+    gst_bytestream_get_status (bs, &pending, &event);
+    if (event) {
+      switch (GST_EVENT_TYPE (event)) {
+        case GST_EVENT_EOS:
+          eos = TRUE;
+          break;
+        default:
+          break;
+      }
+      gst_event_unref (event);
+    }
+  }
+
+  memcpy (buf, data, read);
+  gst_bytestream_flush_fast (bs, read);
+
+  return read;
+}
+
+/*
+ * Are we at EOS?
+ */
+
+bool
+GstMplexIBitStream::EndOfStream (void)
+{
+  return eos;
+}