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1 /**************************************************************************
2  *
3  * Copyright 2011 Christian König.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the
15  * next paragraph) shall be included in all copies or substantial portions
16  * of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25  *
26  **************************************************************************/
27 
28 #ifndef vl_mpeg12_bitstream_h
29 #define vl_mpeg12_bitstream_h
30 
31 #include "vl_defines.h"
32 #include "vl_vlc.h"
33 
34 struct vl_mpg12_bs
35 {
36    struct pipe_video_codec *decoder;
37 
38    struct pipe_mpeg12_picture_desc *desc;
39    struct dct_coeff *intra_dct_tbl;
40 
41    struct vl_vlc vlc;
42    short pred_dc[3];
43 };
44 
45 void
46 vl_mpg12_bs_init(struct vl_mpg12_bs *bs, struct pipe_video_codec *decoder);
47 
48 void
49 vl_mpg12_bs_decode(struct vl_mpg12_bs *bs,
50                    struct pipe_video_buffer *target,
51                    struct pipe_mpeg12_picture_desc *picture,
52                    unsigned num_buffers,
53                    const void * const *buffers,
54                    const unsigned *sizes);
55 
56 #endif /* vl_mpeg12_bitstream_h */
57