1 #ifndef _VIDDEC_MPEG2_H 2 #define _VIDDEC_MPEG2_H 3 4 /** 5 * viddec_mpeg2.h 6 * -------------- 7 * This header file contains all the necessary state information and function 8 * prototypes for the MPEG2 parser. This header also defines the debug macros 9 * used by the MPEG2 parser to emit debug messages in host mode. 10 */ 11 12 #include "viddec_fw_debug.h" 13 #include "viddec_parser_ops.h" 14 #include "mpeg2.h" 15 16 /* Debug Print Macros */ 17 #define MPEG2_DEB(x...) DEB("MPEG2_Parser: "x) 18 #define MPEG2_FA_DEB(x...) DEB("MPEG2_Frame_attribute: "x) 19 20 /* Bit masks */ 21 #define MPEG2_BIT_MASK_11 0x7ff /* Used for masking Height and Width */ 22 #define MPEG2_BIT_MASK_8 0xff /* Used fro masking start code byte */ 23 #define MPEG2_BIT_MASK_4 0xf /* Used for masking Level */ 24 #define MPEG2_BIT_MASK_3 0x7 /* Used for masking Profile */ 25 26 /* MPEG2 Start code and prefix size */ 27 #define MPEG2_SC_AND_PREFIX_SIZE 32 28 29 /* Number of DMEM Workload Items */ 30 #define MPEG2_NUM_DMEM_WL_ITEMS 2 31 32 /* Number of Quantization Matrix Workload Items */ 33 #define MPEG2_NUM_QMAT_WL_ITEMS 32 34 35 /* Maximum supported content size */ 36 #define MPEG2_MAX_CONTENT_WIDTH 2048 37 #define MPEG2_MAX_CONTENT_HEIGHT 2048 38 39 /* Others */ 40 #define MPEG2_BITS_EIGHT 8 41 42 43 /* MPEG2 Stream Levels */ 44 typedef enum { 45 MPEG2_LEVEL_SEQ = 0, 46 MPEG2_LEVEL_GOP, 47 MPEG2_LEVEL_PIC 48 } mpeg2_stream_levels; 49 50 /* MPEG2 Headers and Extensions */ 51 typedef enum { 52 MPEG2_HEADER_NONE = 0, 53 MPEG2_HEADER_SEQ = 1 << 0, 54 MPEG2_HEADER_SEQ_EXT = 1 << 1, 55 MPEG2_HEADER_SEQ_DISP_EXT = 1 << 2, 56 MPEG2_HEADER_GOP = 1 << 3, 57 MPEG2_HEADER_PIC = 1 << 4, 58 MPEG2_HEADER_PIC_COD_EXT = 1 << 5, 59 MPEG2_HEADER_PIC_DISP_EXT = 1 << 6, 60 MPEG2_HEADER_SEQ_SCAL_EXT = 1 << 7 61 } mpeg2_headers; 62 63 /* MPEG2 Parser Status Codes */ 64 typedef enum { 65 MPEG2_SUCCESS = 0, /* No error */ 66 MPEG2_FRAME_COMPLETE = 1, /* Frame parsing complete found */ 67 MPEG2_PARSE_ERROR = 2, /* Failure in parsing */ 68 } mpeg2_status; 69 70 /* MPEG2 Current Workload Status Codes */ 71 typedef enum { 72 MPEG2_WL_EMPTY = 0, 73 MPEG2_WL_DMEM_DATA = (1 << 0), 74 MPEG2_WL_REF_INFO = (1 << 1), 75 MPEG2_WL_PARTIAL_SLICE = (1 << 2), 76 MPEG2_WL_DANGLING_FIELD = (1 << 3), 77 MPEG2_WL_COMPLETE = (1 << 4), 78 MPEG2_WL_MISSING_TF = (1 << 5), 79 MPEG2_WL_MISSING_BF = (1 << 6), 80 MPEG2_WL_UNSUPPORTED = (1 << 7), 81 /* Error codes */ 82 MPEG2_WL_CORRUPTED_SEQ_HDR = (1 << 8), 83 MPEG2_WL_CORRUPTED_SEQ_EXT = (1 << 9), 84 MPEG2_WL_CORRUPTED_SEQ_DISP_EXT = (1 << 10), 85 MPEG2_WL_CORRUPTED_GOP_HDR = (1 << 11), 86 MPEG2_WL_CORRUPTED_PIC_HDR = (1 << 12), 87 MPEG2_WL_CORRUPTED_PIC_COD_EXT = (1 << 13), 88 MPEG2_WL_CORRUPTED_PIC_DISP_EXT = (1 << 14), 89 MPEG2_WL_CORRUPTED_QMAT_EXT = (1 << 15), 90 /* Error concealment codes */ 91 MPEG2_WL_CONCEALED_PIC_COD_TYPE = (1 << 16), 92 MPEG2_WL_CONCEALED_PIC_STRUCT = (1 << 17), 93 MPEG2_WL_CONCEALED_CHROMA_FMT = (1 << 18), 94 /* Type of dangling field */ 95 MPEG2_WL_DANGLING_FIELD_TOP = (1 << 24), 96 MPEG2_WL_DANGLING_FIELD_BOTTOM = (1 << 25), 97 MPEG2_WL_REPEAT_FIELD = (1 << 26), 98 } mpeg2_wl_status_codes; 99 100 /* MPEG2 Parser Workload types */ 101 typedef enum 102 { 103 /* MPEG2 Decoder Specific data */ 104 VIDDEC_WORKLOAD_MPEG2_DMEM = VIDDEC_WORKLOAD_DECODER_SPECIFIC, 105 106 /* MPEG2 Quantization Matrix data */ 107 VIDDEC_WORKLOAD_MPEG2_QMAT, 108 109 /* Past reference frame */ 110 VIDDEC_WORKLOAD_MPEG2_REF_PAST = VIDDEC_WORKLOAD_REF_FRAME_SOURCE_0, 111 112 /* Future reference frame */ 113 VIDDEC_WORKLOAD_MPEG2_REF_FUTURE, 114 115 /* Use current frame as reference */ 116 VIDDEC_WORKLOAD_MPEG2_REF_CURRENT_FRAME, 117 118 /* User Data */ 119 VIDDEC_WORKLOAD_MPEG2_USERDATA = VIDDEC_WORKLOAD_USERDATA 120 } viddec_mpeg2_workloads; 121 122 /* MPEG2 Decoder Specific Workitems */ 123 struct mpeg2_workitems 124 { 125 /* Core Sequence Info 1 */ 126 uint32_t csi1; 127 128 /* Core Sequence Info 2 */ 129 uint32_t csi2; 130 131 /* Core Picture Info 1 */ 132 uint32_t cpi1; 133 134 /* Core Picture Coding Extension Info 1 */ 135 uint32_t cpce1; 136 137 /* Quantization Matrices */ 138 /* 0-15: Intra Quantization Matrix */ 139 /* 16-31: Non-Intra Quantization Matrix */ 140 /* 32-47: Chroma Intra Quantization Matrix */ 141 /* 48-63: Chroma Non-Intra Quantization Matrix */ 142 uint32_t qmat[MPEG2_QUANT_MAT_SIZE]; 143 }; 144 145 /* MPEG2 Video Parser Context */ 146 struct viddec_mpeg2_parser 147 { 148 /* MPEG2 Metadata Structure */ 149 struct mpeg2_info info; 150 151 /* MPEG2 Workitems */ 152 struct mpeg2_workitems wi; 153 154 /* Workload Status */ 155 uint32_t mpeg2_wl_status; 156 157 /* Last parsed start code */ 158 int32_t mpeg2_last_parsed_sc; 159 160 /* Last parsed slice start code. Used to start emitting workload items. */ 161 int32_t mpeg2_last_parsed_slice_sc; 162 163 /* Current sequence headers parsed */ 164 uint8_t mpeg2_curr_seq_headers; 165 166 /* Current frame headers parsed */ 167 uint8_t mpeg2_curr_frame_headers; 168 169 /* Flag to indicate a valid sequence header was successfully parsed for */ 170 /* the current stream. */ 171 uint8_t mpeg2_valid_seq_hdr_parsed; 172 173 /* Flag to indicate if quantization matrices are updated */ 174 uint8_t mpeg2_custom_qmat_parsed; 175 176 /* Flag to indicate if reference table is updated with an entry */ 177 uint8_t mpeg2_ref_table_updated; 178 179 /* Flag to indicate if the stream is MPEG2 */ 180 uint8_t mpeg2_stream; 181 182 /* Flag to indicate if the previous picture metadata is parsed */ 183 uint8_t mpeg2_pic_metadata_complete; 184 185 /* Number of active pan scan offsets */ 186 uint8_t mpeg2_num_pan_scan_offsets; 187 188 /* Indicates the current stream level (Sequence/GOP/Picture) */ 189 /* Used for identifying the level for User Data */ 190 uint8_t mpeg2_stream_level; 191 192 /* Flag to indicate if the current picture is interlaced or not */ 193 uint8_t mpeg2_picture_interlaced; 194 195 /* Flag to indicate if the current field for interlaced picture is first */ 196 /* field or not. This flag is used only when mpeg2_picture_interlaced is */ 197 /* set to 1. */ 198 uint8_t mpeg2_first_field; 199 200 /* Flag to indicate if the current parsed data has start of a frame */ 201 uint8_t mpeg2_frame_start; 202 203 /* Temporal reference of the previous picture - Used to detect dangling fields */ 204 uint32_t mpeg2_prev_temp_ref; 205 206 /* Previous picture structure - Used to identify the type of missing field */ 207 uint8_t mpeg2_prev_picture_structure; 208 209 /* Flag to decide whether to use the current or next workload to dump workitems */ 210 uint8_t mpeg2_use_next_workload; 211 uint8_t mpeg2_first_slice_flag; 212 }; 213 214 /* External Function Declarations */ 215 extern void *memset(void *s, int32_t c, uint32_t n); 216 217 /* MPEG2 Parser Function Prototypes */ 218 void viddec_mpeg2_translate_attr (void *parent, void *ctxt); 219 void viddec_mpeg2_emit_workload (void *parent, void *ctxt); 220 void viddec_mpeg2_parse_seq_hdr (void *parent, void *ctxt); 221 void viddec_mpeg2_parse_gop_hdr (void *parent, void *ctxt); 222 void viddec_mpeg2_parse_pic_hdr (void *parent, void *ctxt); 223 void viddec_mpeg2_parse_and_append_user_data(void *parent, void *ctxt); 224 void viddec_mpeg2_parse_and_append_slice_data(void *parent, void *ctxt); 225 void viddec_mpeg2_parse_ext (void *parent, void *ctxt); 226 227 /* MPEG2 wrapper functions for workload operations */ 228 void viddec_mpeg2_append_workitem (void *parent, viddec_workload_item_t *wi, uint8_t flag); 229 void viddec_mpeg2_append_pixeldata (void *parent, uint8_t flag); 230 viddec_workload_t* viddec_mpeg2_get_header (void *parent, uint8_t flag); 231 #endif 232
