vldXvMC.h revision a2760a4d593af57a19ec32cdfd1723b68495df8c
/*****************************************************************************
* 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,
* 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
/*
* 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 */
/*
* 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.
*/
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 {
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.
*/
const XvMCQMatrix *qmx);
/*
* Put a slice to the decoder. The hardware will start processing it
* immediately.
*/
/*
* 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]);
*/
#endif