git.sesse.net Git - vlc/blob - 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 1.3 2001/08/22 17:21:45 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     dctelem_t               pi_block[64];                           /* block */
  31     void                ( * pf_idct )   ( void *, dctelem_t*, int );
  32                                                      /* sparse IDCT or not ? */
  33     int                     i_sparse_pos;                  /* position of the
  34                                                             * non-NULL coeff */
  35     yuv_data_t *            p_dct_data;              /* pointer to the position
  36                                                       * in the final picture */
  37 } idct_inner_t;
  38
  39 typedef struct motion_inner_s
  40 {
  41     boolean_t               b_average;                          /* 0 == copy */
  42     int                     i_x_pred, i_y_pred;            /* motion vectors */
  43     yuv_data_t *            pp_source[3];
  44     int                     i_dest_offset, i_src_offset;
  45     int                     i_stride, i_height;
  46     boolean_t               b_second_half;
  47 } motion_inner_t;
  48
  49 typedef struct macroblock_s
  50 {
  51     int                     i_mb_modes;
  52
  53     /* IDCT information */
  54     idct_inner_t            p_idcts[6];
  55     int                     i_coded_block_pattern;
  56                                                  /* which blocks are coded ? */
  57     int                     i_lum_dct_stride, i_chrom_dct_stride;
  58                                  /* nb of coeffs to jump when changing lines */
  59
  60     /* Motion compensation information */
  61     motion_inner_t          p_motions[8];
  62     int                     i_nb_motions;
  63     yuv_data_t *            pp_dest[3];
  64 } macroblock_t;
  65
  66 /* Macroblock Modes */
  67 #define MB_INTRA                        1
  68 #define MB_PATTERN                      2
  69 #define MB_MOTION_BACKWARD              4
  70 #define MB_MOTION_FORWARD               8
  71 #define MB_QUANT                        16
  72 #define DCT_TYPE_INTERLACED             32
  73
  74 /*****************************************************************************
  75  * vdec_thread_t: video decoder thread descriptor
  76  *****************************************************************************/
  77 typedef struct vdec_thread_s
  78 {
  79     vlc_thread_t        thread_id;                /* id for thread functions */
  80     boolean_t           b_die;
  81
  82     /* IDCT iformations */
  83     void *              p_idct_data;
  84
  85     /* Input properties */
  86     struct vdec_pool_s * p_pool;
  87 } vdec_thread_t;
  88