1 /*****************************************************************************
2 * VLD XvMC Nonstandard extension API.
4 * Copyright (c) 2004 The Unichrome Project. All rights reserved.
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 * Author: Thomas Hellström, 2004.
32 #include <X11/extensions/XvMC.h>
35 * New "Motion compensation type".
38 #define XVMC_VLD 0x0020000
41 * Below Flags to be passed in the XvMCMpegControl structure 'flag' field.
44 #define XVMC_PROGRESSIVE_SEQUENCE 0x00000010
47 * Zig-Zag Scan / Alternative Scan.
50 #define XVMC_ZIG_ZAG_SCAN 0x00000000
51 #define XVMC_ALTERNATE_SCAN 0x00000100
54 * Frame DCT and frame prediction are used. /
58 #define XVMC_PRED_DCT_FRAME 0x00000040
59 #define XVMC_PRED_DCT_FIELD 0x00000000
62 * Top / Bottom field first
65 #define XVMC_TOP_FIELD_FIRST 0x00000080
66 #define XVMC_BOTTOM_FIELD_FIRST 0x00000000
69 * Motion vectors coded in intra macroblocks
72 #define XVMC_CONCEALMENT_MOTION_VECTORS 0x00000200
75 * Which of two mappings between quantiser_scale_code
76 * and quantiser_scale shall apply.
79 #define XVMC_Q_SCALE_TYPE 0x00000400
82 * Intra VLC Format: Bit = 0, Bit = 1
83 * Intra blocks B-14 B-15
84 * Non-intra blocks B-14 B-14
86 #define XVMC_INTRA_VLC_FORMAT 0x00000800
89 * Also XVMC_SECOND_FIELD should be set in flags if active.
92 #define XVMC_I_PICTURE 1
93 #define XVMC_P_PICTURE 2
94 #define XVMC_B_PICTURE 3
96 typedef struct _XvMCMpegControl{
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,
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 */
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.
119 extern Status XvMCBeginSurface(Display *display,
120 XvMCContext *context,
121 XvMCSurface *target_surface,
122 XvMCSurface *past_surface,
123 XvMCSurface *future_surface,
124 const XvMCMpegControl *control);
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.
136 typedef 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];
148 * Upload a XvMCQMatrix structure to the clientlib.
149 * The hardware will start using it the next XvMCBeginSurface.
152 extern Status XvMCLoadQMatrix(Display *display, XvMCContext *context,
153 const XvMCQMatrix *qmx);
157 * Put a slice to the decoder. The hardware will start processing it
161 extern Status XvMCPutSlice(Display *display,XvMCContext *context,
162 char *slice, int nBytes);
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]);
171 extern Status XvMCPutSlice2(Display *display,XvMCContext *context,
172 char *slice, int nBytes, int sliceCode);