1/*
2 * Copyright (c) 2007-2012 Intel Corporation. All Rights Reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sub license, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the
13 * next paragraph) shall be included in all copies or substantial portions
14 * of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
19 * IN NO EVENT SHALL INTEL AND/OR ITS SUPPLIERS BE LIABLE FOR
20 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
21 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
22 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25/**
26 * \file va_dec_jpeg.h
27 * \brief The JPEG decoding API
28 *
29 * This file contains the \ref api_dec_jpeg "JPEG decoding API".
30 */
31
32#ifndef VA_DEC_JPEG_H
33#define VA_DEC_JPEG_H
34
35#ifdef __cplusplus
36extern "C" {
37#endif
38
39#include <va/va.h>
40
41/**
42 * \defgroup api_dec_jpeg JPEG decoding API
43 *
44 * This JPEG decoding API supports Baseline profile only.
45 *
46 * @{
47 */
48
49/**
50 * \brief Picture parameter for JPEG decoding.
51 *
52 * This structure holds information from the frame header, along with
53 * definitions from additional segments.
54 */
55typedef struct _VAPictureParameterBufferJPEGBaseline {
56 /** \brief Picture width in pixels. */
57 uint16_t picture_width;
58 /** \brief Picture height in pixels. */
59 uint16_t picture_height;
60
61 struct {
62 /** \brief Component identifier (Ci). */
63 uint8_t component_id;
64 /** \brief Horizontal sampling factor (Hi). */
65 uint8_t h_sampling_factor;
66 /** \brief Vertical sampling factor (Vi). */
67 uint8_t v_sampling_factor;
68 /* \brief Quantization table selector (Tqi). */
69 uint8_t quantiser_table_selector;
70 } components[255];
71 /** \brief Number of components in frame (Nf). */
72 uint8_t num_components;
73
74 /** \brief Input color space 0: YUV, 1: RGB, 2: BGR, others: reserved */
75 uint8_t color_space;
76 /** \brief Set to VA_ROTATION_* for a single rotation angle reported by VAConfigAttribDecJPEG. */
77 uint32_t rotation;
78 /** \brief Reserved bytes for future use, must be zero */
79 uint32_t va_reserved[VA_PADDING_MEDIUM - 1];
80} VAPictureParameterBufferJPEGBaseline;
81
82/**
83 * \brief Quantization table for JPEG decoding.
84 *
85 * This structure holds the complete quantization tables. This is an
86 * aggregation of all quantization table (DQT) segments maintained by
87 * the application. i.e. up to 4 quantization tables are stored in
88 * there for baseline profile.
89 *
90 * The #load_quantization_table array can be used as a hint to notify
91 * the VA driver implementation about which table(s) actually changed
92 * since the last submission of this buffer.
93 *
94 * The #quantiser_table values are specified in zig-zag scan order.
95 */
96typedef struct _VAIQMatrixBufferJPEGBaseline {
97 /** \brief Specifies which #quantiser_table is valid. */
98 uint8_t load_quantiser_table[4];
99 /** \brief Quanziation tables indexed by table identifier (Tqi). */
100 uint8_t quantiser_table[4][64];
101
102 /** \brief Reserved bytes for future use, must be zero */
103 uint32_t va_reserved[VA_PADDING_LOW];
104} VAIQMatrixBufferJPEGBaseline;
105
106/**
107 * \brief Slice parameter for JPEG decoding.
108 *
109 * This structure holds information from the scan header, along with
110 * definitions from additional segments. The associated slice data
111 * buffer holds all entropy coded segments (ECS) in the scan.
112 */
113typedef struct _VASliceParameterBufferJPEGBaseline {
114 /** @name Codec-independent Slice Parameter Buffer base. */
115 /**@{*/
116 /** \brief Number of bytes in the slice data buffer for this slice. */
117 uint32_t slice_data_size;
118 /** \brief The offset to the first byte of the first MCU. */
119 uint32_t slice_data_offset;
120 /** \brief Slice data buffer flags. See \c VA_SLICE_DATA_FLAG_xxx. */
121 uint32_t slice_data_flag;
122 /**@}*/
123
124 /** \brief Scan horizontal position. */
125 uint32_t slice_horizontal_position;
126 /** \brief Scan vertical position. */
127 uint32_t slice_vertical_position;
128
129 struct {
130 /** \brief Scan component selector (Csj). */
131 uint8_t component_selector;
132 /** \brief DC entropy coding table selector (Tdj). */
133 uint8_t dc_table_selector;
134 /** \brief AC entropy coding table selector (Taj). */
135 uint8_t ac_table_selector;
136 } components[4];
137 /** \brief Number of components in scan (Ns). */
138 uint8_t num_components;
139
140 /** \brief Restart interval definition (Ri). */
141 uint16_t restart_interval;
142 /** \brief Number of MCUs in a scan. */
143 uint32_t num_mcus;
144
145 /** \brief Reserved bytes for future use, must be zero */
146 uint32_t va_reserved[VA_PADDING_LOW];
147} VASliceParameterBufferJPEGBaseline;
148
149/**@}*/
150
151#ifdef __cplusplus
152}
153#endif
154
155#endif /* VA_DEC_JPEG_H */
156

source code of include/va/va_dec_jpeg.h