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 36 extern "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 */ 55 typedef 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 crop rectangle boundary in pixels */ 79 VARectangle crop_rectangle; 80 /** \brief Reserved bytes for future use, must be zero */ 81 uint32_t va_reserved[VA_PADDING_MEDIUM - 3]; 82 } VAPictureParameterBufferJPEGBaseline; 83 84 /** 85 * \brief Quantization table for JPEG decoding. 86 * 87 * This structure holds the complete quantization tables. This is an 88 * aggregation of all quantization table (DQT) segments maintained by 89 * the application. i.e. up to 4 quantization tables are stored in 90 * there for baseline profile. 91 * 92 * The #load_quantization_table array can be used as a hint to notify 93 * the VA driver implementation about which table(s) actually changed 94 * since the last submission of this buffer. 95 * 96 * The #quantiser_table values are specified in zig-zag scan order. 97 */ 98 typedef struct _VAIQMatrixBufferJPEGBaseline { 99 /** \brief Specifies which #quantiser_table is valid. */ 100 uint8_t load_quantiser_table[4]; 101 /** \brief Quanziation tables indexed by table identifier (Tqi). */ 102 uint8_t quantiser_table[4][64]; 103 104 /** \brief Reserved bytes for future use, must be zero */ 105 uint32_t va_reserved[VA_PADDING_LOW]; 106 } VAIQMatrixBufferJPEGBaseline; 107 108 /** 109 * \brief Slice parameter for JPEG decoding. 110 * 111 * This structure holds information from the scan header, along with 112 * definitions from additional segments. The associated slice data 113 * buffer holds all entropy coded segments (ECS) in the scan. 114 */ 115 typedef struct _VASliceParameterBufferJPEGBaseline { 116 /** @name Codec-independent Slice Parameter Buffer base. */ 117 /**@{*/ 118 /** \brief Number of bytes in the slice data buffer for this slice. */ 119 uint32_t slice_data_size; 120 /** \brief The offset to the first byte of the first MCU. */ 121 uint32_t slice_data_offset; 122 /** \brief Slice data buffer flags. See \c VA_SLICE_DATA_FLAG_xxx. */ 123 uint32_t slice_data_flag; 124 /**@}*/ 125 126 /** \brief Scan horizontal position. */ 127 uint32_t slice_horizontal_position; 128 /** \brief Scan vertical position. */ 129 uint32_t slice_vertical_position; 130 131 struct { 132 /** \brief Scan component selector (Csj). */ 133 uint8_t component_selector; 134 /** \brief DC entropy coding table selector (Tdj). */ 135 uint8_t dc_table_selector; 136 /** \brief AC entropy coding table selector (Taj). */ 137 uint8_t ac_table_selector; 138 } components[4]; 139 /** \brief Number of components in scan (Ns). */ 140 uint8_t num_components; 141 142 /** \brief Restart interval definition (Ri). */ 143 uint16_t restart_interval; 144 /** \brief Number of MCUs in a scan. */ 145 uint32_t num_mcus; 146 147 /** \brief Reserved bytes for future use, must be zero */ 148 uint32_t va_reserved[VA_PADDING_LOW]; 149 } VASliceParameterBufferJPEGBaseline; 150 151 /**@}*/ 152 153 #ifdef __cplusplus 154 } 155 #endif 156 157 #endif /* VA_DEC_JPEG_H */ 158