IABSD.fr/xenocara/proto/videoproto/vldXvMC.h

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• Author : matthieu
  Date : 2013-09-22 13:07:30
  Hash : 94ac41a2
  Message : Update to videoproto 2.3.2

• proto/videoproto/vldXvMC.h

• /*****************************************************************************
   * VLD XvMC Nonstandard extension API.
   *
   * Copyright (c) 2004 The Unichrome Project. All rights reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHOR(S) OR COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   * DEALINGS IN THE SOFTWARE.
   *
   * Author: Thomas Hellström, 2004.
   */
  
  
  #ifndef _VLDXVMC_H
  #define _VLDXVMC_H
  
  #include <X11/Xlib.h>
  #include <X11/extensions/XvMC.h>
  
  /*
   * New "Motion compensation type".
   */
  
  #define XVMC_VLD 0x0020000
  
  /*
   * Below Flags to be passed in the XvMCMpegControl structure 'flag' field.
   */
  
  #define XVMC_PROGRESSIVE_SEQUENCE 0x00000010
  
  /*
   * Zig-Zag Scan / Alternative Scan.
   */
  
  #define XVMC_ZIG_ZAG_SCAN         0x00000000
  #define XVMC_ALTERNATE_SCAN       0x00000100
  
  /*
   * Frame DCT and frame prediction are used. /
   * Field prediction
   */
  
  #define XVMC_PRED_DCT_FRAME       0x00000040
  #define XVMC_PRED_DCT_FIELD       0x00000000
  
  /*
   * Top / Bottom field first
   */
  
  #define XVMC_TOP_FIELD_FIRST      0x00000080
  #define XVMC_BOTTOM_FIELD_FIRST   0x00000000
  
  /*
   * Motion vectors coded in intra macroblocks
   */
  
  #define XVMC_CONCEALMENT_MOTION_VECTORS 0x00000200
  
  /*
   * Which of two mappings between quantiser_scale_code
   * and quantiser_scale shall apply.
   */
  
  #define XVMC_Q_SCALE_TYPE         0x00000400
  
  /*
   * Intra VLC Format: Bit = 0,  Bit = 1
   * Intra blocks      B-14      B-15
   * Non-intra blocks  B-14      B-14
   */
  #define XVMC_INTRA_VLC_FORMAT     0x00000800
  
  /*
   * Also XVMC_SECOND_FIELD should be set in flags if active.
   */
  
  #define XVMC_I_PICTURE 1
  #define XVMC_P_PICTURE 2
  #define XVMC_B_PICTURE 3
  
  typedef struct _XvMCMpegControl{
      unsigned
          BVMV_range,        /* Backward vertical motion vector range */
  	BHMV_range,        /* Backward horizontal motion vector range */
  	FVMV_range,        /* Forward vertical motion vector range */
  	FHMV_range,        /* Forward horizontal motion vector range */
  	picture_structure, /* XVMC_TOP_FIELD, XVMC_BOTTOM_FIELD,
  			    *  XVMC_FRAME_PICTURE
  			    */
  	intra_dc_precision, /* 0x00 - 0x03 corresponds to 8 to 11 bits prec. */
  	picture_coding_type,/* XVMC_X_PICTURE */
  	mpeg_coding,        /* XVMC_MPEG_2 */
  	flags;              /* See above */
  }XvMCMpegControl;
  
  
  /*
   * The following function is called BEFORE starting sending slices to the
   * lib. It grabs the decoder hardware and prepares it for coming slices.
   * The function XvMCSyncSurface will release the hardware for other contexts
   * in addition to it's current functionality.
   */
  
  extern Status XvMCBeginSurface(Display *display,
  			       XvMCContext *context,
  			       XvMCSurface *target_surface,
  			       XvMCSurface *past_surface,
  			       XvMCSurface *future_surface,
  			       const XvMCMpegControl *control);
  
  
  /*
   * The quantizer matrix structure. This should be filled in by the user and
   * uploaded whenever a change is needed. The lib initializes with
   * default matrices and will automatically load the hardware with new matrices
   * on decoder context switches. To load data, set the corresponding load flag
   * to true and fill in the values. The VIA MPEG2 engine only uses the
   * intra_quantiser_matrix and the non_intra_quantiser_matrix.
   */
  
  typedef struct _XvMCQMatrix {
      int load_intra_quantiser_matrix;
      int load_non_intra_quantiser_matrix;
      int load_chroma_intra_quantiser_matrix;
      int load_chroma_non_intra_quantiser_matrix;
      unsigned char intra_quantiser_matrix[64];
      unsigned char non_intra_quantiser_matrix[64];
      unsigned char chroma_intra_quantiser_matrix[64];
      unsigned char chroma_non_intra_quantiser_matrix[64];
  } XvMCQMatrix;
  
  /*
   * Upload a XvMCQMatrix structure to the clientlib.
   * The hardware will start using it the next XvMCBeginSurface.
   */
  
  extern Status XvMCLoadQMatrix(Display *display, XvMCContext *context,
  			      const XvMCQMatrix *qmx);
  
  
  /*
   * Put a slice to the decoder. The hardware will start processing it
   * immediately.
   */
  
  extern Status XvMCPutSlice(Display *display,XvMCContext *context,
  			   char *slice, int nBytes);
  /*
   * Put a slice without the slice start code to the decoder.
   * The hardware will start processing it
   * immediately. This function is for client optimization.
   * XvMCPutSlice(display,context,slice,nBytes) is equivalent to
   * XvMCPutSlice2(display,context,slice+4,nBytes-4,slice[3]);
   */
  
  extern Status XvMCPutSlice2(Display *display,XvMCContext *context,
  			   char *slice, int nBytes, int sliceCode);
  
  #endif