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      1 /**************************************************************************
      2  *
      3  * Copyright 2011 Christian Knig.
      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