gstreamer/gst/codecalpha/gstalphadecodebin.h
Nicolas Dufresne ba4053a2b9 alphadecodebin: Add wrappers to decode VP8/VP9 alpha
This includes base class with wrappers bin that will create a static
pipeline capable of handling the VP8/VP9 alpha channel decoding
using two instances of vp8/vp9dec element each.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/2199>
2021-05-11 16:06:56 -04:00

48 lines
1.6 KiB
C

/* GStreamer
* Copyright (C) <2021> Collabora Ltd.
* Author: Nicolas Dufresne <nicolas.dufresne@collabora.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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_ALPHA_DECODE_BIN_H__
#define __GST_ALPHA_DECODE_BIN_H__
#include <gst/gst.h>
/* When wrapping, use the original rank plus this offset. The ad-hoc rules is
* that hardware implementation will use PRIMARY+1 or +2 to override the
* software decoder, so the offset must be large enough to jump over those.
* This should also be small enough so that a marginal (64) or secondary
* wrapper does not cross the PRIMARY line.
*/
#define GST_ALPHA_DECODE_BIN_RANK_OFFSET 10
G_BEGIN_DECLS
#define GST_TYPE_ALPHA_DECODE_BIN (gst_alpha_decode_bin_get_type())
G_DECLARE_DERIVABLE_TYPE (GstAlphaDecodeBin,
gst_alpha_decode_bin, GST, ALPHA_DECODE_BIN, GstBin);
struct _GstAlphaDecodeBinClass
{
GstBinClass parent_class;
const gchar *decoder_name;
};
G_END_DECLS
#endif