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