include/vdec_ext-plugins.h

   1 /*****************************************************************************
   2  * vdec_ext-plugins.h : structures from the video decoder exported to plug-ins
   3  *****************************************************************************
   4  * Copyright (C) 1999, 2000 VideoLAN
   5  * $Id: vdec_ext-plugins.h,v 1.11 2002/04/15 23:04:08 massiot Exp $
   6  *
   7  * Authors: Christophe Massiot <massiot@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  22  *****************************************************************************/
  23
  24 /*****************************************************************************
  25  * macroblock_t : information on a macroblock passed to the video_decoder
  26  *                thread
  27  *****************************************************************************/
  28 typedef struct idct_inner_s
  29 {
  30     /* Should be kept aligned ! */
  31     dctelem_t *             pi_block;                               /* block */
  32     void *                  pi_block_orig;        /* pointer before memalign */
  33     void                ( * pf_idct )   ( dctelem_t *, yuv_data_t *, int,
  34                                           void *, int );
  35                                         /* sparse IDCT or not, add or copy ? */
  36     int                     i_sparse_pos;                  /* position of the
  37                                                             * non-NULL coeff */
  38 } idct_inner_t;
  39
  40 typedef struct motion_inner_s
  41 {
  42     boolean_t               b_average;                          /* 0 == copy */
  43     int                     i_x_pred, i_y_pred;            /* motion vectors */
  44     yuv_data_t *            pp_source[3];
  45     int                     i_dest_offset, i_src_offset;
  46     int                     i_stride, i_height;
  47     boolean_t               b_second_half;
  48 } motion_inner_t;
  49
  50 typedef struct macroblock_s
  51 {
  52     int                     i_mb_modes;
  53
  54     /* IDCT information */
  55     idct_inner_t            p_idcts[12];
  56     u16                     i_coded_block_pattern;
  57                                                  /* which blocks are coded ? */
  58     yuv_data_t *            p_y_data;
  59     yuv_data_t *            p_u_data;
  60     yuv_data_t *            p_v_data;
  61                                                     /* pointers to the position
  62                                                      * in the final picture  */
  63     /* Motion compensation information */
  64     motion_inner_t          p_motions[8];
  65     int                     i_nb_motions;
  66     yuv_data_t *            pp_dest[3];
  67
  68 } macroblock_t;
  69
  70 /* Macroblock Modes */
  71 #define MB_INTRA                        1
  72 #define MB_PATTERN                      2
  73 #define MB_MOTION_BACKWARD              4
  74 #define MB_MOTION_FORWARD               8
  75 #define MB_QUANT                        16
  76 #define DCT_TYPE_INTERLACED             32
  77
  78 /*****************************************************************************
  79  * vdec_thread_t: video decoder thread descriptor
  80  *****************************************************************************/
  81 typedef struct vdec_thread_s
  82 {
  83     vlc_thread_t        thread_id;                /* id for thread functions */
  84     boolean_t           b_die;
  85
  86     /* IDCT iformations */
  87     void *              p_idct_data;
  88
  89     /* Input properties */
  90     struct vdec_pool_s * p_pool;
  91 } vdec_thread_t;
  92