vdpau: extract mpeg2 profile from codec_data

1 files changed, 63 insertions, 0 deletions

diff --git a/sys/vdpau/mpegutil.h b/sys/vdpau/mpegutil.h
new file mode 100644
index 00000000..f0f8aca0
--- /dev/null
+++ b/sys/vdpau/mpegutil.h
@@ -0,0 +1,63 @@
+/* GStreamer
+ * Copyright (C) 2007 Jan Schmidt <thaytan@mad.scientist.com>
+ * Copyright (C) 2009 Carl-Anton Ingmarsson <ca.ingmarsson@gmail.com>
+ *
+ * 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.
+ */
+
+#ifndef __MPEGUTIL_H__
+#define __MPEGUTIL_H__
+
+#include <gst/gst.h>
+
+typedef struct MPEGSeqHdr MPEGSeqHdr;
+
+/* Packet ID codes for different packet types we
+ * care about */
+#define MPEG_PACKET_PICTURE      0x00
+#define MPEG_PACKET_SLICE_MIN    0x01
+#define MPEG_PACKET_SLICE_MAX    0xaf
+#define MPEG_PACKET_SEQUENCE     0xb3
+#define MPEG_PACKET_EXTENSION    0xb5
+#define MPEG_PACKET_SEQUENCE_END 0xb7
+#define MPEG_PACKET_GOP          0xb8
+#define MPEG_PACKET_NONE         0xff
+
+/* Extension codes we care about */
+#define MPEG_PACKET_EXT_SEQUENCE         0x01
+#define MPEG_PACKET_EXT_SEQUENCE_DISPLAY 0x02
+#define MPEG_PACKET_EXT_QUANT_MATRIX     0x03
+
+struct MPEGSeqHdr
+{
+  /* 0 for unknown, else 1 or 2 */
+  guint8 mpeg_version;
+
+  /* Pixel-Aspect Ratio from DAR code via set_par_from_dar */
+  gint par_w, par_h;
+  /* Width and Height of the video */
+  gint width, height;
+  /* Framerate */
+  gint fps_n, fps_d;
+
+  /* mpeg2 decoder profile */
+  gint profile;
+};
+
+gboolean mpeg_util_parse_sequence_hdr (MPEGSeqHdr *hdr, 
+    guint8 *data, guint8 *end);
+
+#endif