vldXvMC.h revision cfcf9057 
1/*****************************************************************************
2 * VLD XvMC Nonstandard extension API.
3 *
4 * Copyright (c) 2004 The Unichrome Project. All rights reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHOR(S) OR COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 *
24 * Author: Thomas Hellström, 2004.
25 */
26
27
28#ifndef _VLDXVMC_H
29#define _VLDXVMC_H
30
31#include <X11/Xlib.h>
32#include <X11/extensions/XvMC.h>
33
34/*
35 * New "Motion compensation type".
36 */
37
38#define XVMC_VLD 0x0020000
39
40/*
41 * Below Flags to be passed in the XvMCMpegControl structure 'flag' field.
42 */
43
44#define XVMC_PROGRESSIVE_SEQUENCE 0x00000010
45
46/*
47 * Zig-Zag Scan / Alternative Scan.
48 */
49
50#define XVMC_ZIG_ZAG_SCAN         0x00000000
51#define XVMC_ALTERNATE_SCAN       0x00000100
52
53/*
54 * Frame DCT and frame prediction are used. /
55 * Field prediction
56 */
57
58#define XVMC_PRED_DCT_FRAME       0x00000040
59#define XVMC_PRED_DCT_FIELD       0x00000000
60
61/*
62 * Top / Bottom field first
63 */
64
65#define XVMC_TOP_FIELD_FIRST      0x00000080
66#define XVMC_BOTTOM_FIELD_FIRST   0x00000000
67
68/*
69 * Motion vectors coded in intra macroblocks
70 */
71
72#define XVMC_CONCEALMENT_MOTION_VECTORS 0x00000200
73
74/*
75 * Which of two mappings between quantiser_scale_code
76 * and quantiser_scale shall apply.
77 */
78
79#define XVMC_Q_SCALE_TYPE         0x00000400
80
81/*
82 * Intra VLC Format: Bit = 0,  Bit = 1
83 * Intra blocks      B-14      B-15
84 * Non-intra blocks  B-14      B-14
85 */
86#define XVMC_INTRA_VLC_FORMAT     0x00000800
87
88/*
89 * Also XVMC_SECOND_FIELD should be set in flags if active.
90 */
91
92#define XVMC_I_PICTURE 1
93#define XVMC_P_PICTURE 2
94#define XVMC_B_PICTURE 3
95
96typedef struct _XvMCMpegControl{
97    unsigned
98        BVMV_range,        /* Backward vertical motion vector range */
99	BHMV_range,        /* Backward horizontal motion vector range */
100	FVMV_range,        /* Forward vertical motion vector range */
101	FHMV_range,        /* Forward horizontal motion vector range */
102	picture_structure, /* XVMC_TOP_FIELD, XVMC_BOTTOM_FIELD,
103			    *  XVMC_FRAME_PICTURE
104			    */
105	intra_dc_precision, /* 0x00 - 0x03 corresponds to 8 to 11 bits prec. */
106	picture_coding_type,/* XVMC_X_PICTURE */
107	mpeg_coding,        /* XVMC_MPEG_2 */
108	flags;              /* See above */
109}XvMCMpegControl;
110
111
112/*
113 * The following function is called BEFORE starting sending slices to the
114 * lib. It grabs the decoder hardware and prepares it for coming slices.
115 * The function XvMCSyncSurface will release the hardware for other contexts
116 * in addition to it's current functionality.
117 */
118
119extern Status XvMCBeginSurface(Display *display,
120			       XvMCContext *context,
121			       XvMCSurface *target_surface,
122			       XvMCSurface *past_surface,
123			       XvMCSurface *future_surface,
124			       const XvMCMpegControl *control);
125
126
127/*
128 * The quantizer matrix structure. This should be filled in by the user and
129 * uploaded whenever a change is needed. The lib initializes with
130 * default matrices and will automatically load the hardware with new matrices
131 * on decoder context switches. To load data, set the corresponding load flag
132 * to true and fill in the values. The VIA MPEG2 engine only uses the
133 * intra_quantiser_matrix and the non_intra_quantiser_matrix.
134 */
135
136typedef struct _XvMCQMatrix {
137    int load_intra_quantiser_matrix;
138    int load_non_intra_quantiser_matrix;
139    int load_chroma_intra_quantiser_matrix;
140    int load_chroma_non_intra_quantiser_matrix;
141    unsigned char intra_quantiser_matrix[64];
142    unsigned char non_intra_quantiser_matrix[64];
143    unsigned char chroma_intra_quantiser_matrix[64];
144    unsigned char chroma_non_intra_quantiser_matrix[64];
145} XvMCQMatrix;
146
147/*
148 * Upload a XvMCQMatrix structure to the clientlib.
149 * The hardware will start using it the next XvMCBeginSurface.
150 */
151
152extern Status XvMCLoadQMatrix(Display *display, XvMCContext *context,
153			      const XvMCQMatrix *qmx);
154
155
156/*
157 * Put a slice to the decoder. The hardware will start processing it
158 * immediately.
159 */
160
161extern Status XvMCPutSlice(Display *display,XvMCContext *context,
162			   char *slice, int nBytes);
163/*
164 * Put a slice without the slice start code to the decoder.
165 * The hardware will start processing it
166 * immediately. This function is for client optimization.
167 * XvMCPutSlice(display,context,slice,nBytes) is equivalent to
168 * XvMCPutSlice2(display,context,slice+4,nBytes-4,slice[3]);
169 */
170
171extern Status XvMCPutSlice2(Display *display,XvMCContext *context,
172			   char *slice, int nBytes, int sliceCode);
173
174#endif
175