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 1.4 2001/09/05 16:07:49 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 )   ( dctelem_t *, yuv_data_t *, int,
  32                                           void *, int );
  33                                         /* sparse IDCT or not, add or copy ? */
  34     int                     i_sparse_pos;                  /* position of the
  35                                                             * non-NULL coeff */
  36     yuv_data_t *            p_dct_data;              /* pointer to the position
  37                                                       * in the final picture */
  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[6];
  56     int                     i_coded_block_pattern;
  57                                                  /* which blocks are coded ? */
  58     int                     i_lum_dct_stride, i_chrom_dct_stride;
  59                                  /* nb of coeffs to jump when changing lines */
  60
  61     /* Motion compensation information */
  62     motion_inner_t          p_motions[8];
  63     int                     i_nb_motions;
  64     yuv_data_t *            pp_dest[3];
  65 } macroblock_t;
  66
  67 /* Macroblock Modes */
  68 #define MB_INTRA                        1
  69 #define MB_PATTERN                      2
  70 #define MB_MOTION_BACKWARD              4
  71 #define MB_MOTION_FORWARD               8
  72 #define MB_QUANT                        16
  73 #define DCT_TYPE_INTERLACED             32
  74
  75 /*****************************************************************************
  76  * vdec_thread_t: video decoder thread descriptor
  77  *****************************************************************************/
  78 typedef struct vdec_thread_s
  79 {
  80     vlc_thread_t        thread_id;                /* id for thread functions */
  81     boolean_t           b_die;
  82
  83     /* IDCT iformations */
  84     void *              p_idct_data;
  85
  86     /* Input properties */
  87     struct vdec_pool_s * p_pool;
  88 } vdec_thread_t;
  89