/* mpeg2dec.h, MPEG specific defines */ /* Copyright (C) 1996, MPEG Software Simulation Group. All Rights Reserved. */ /* * Disclaimer of Warranty * * These software programs are available to the user without any license fee or * royalty on an "as is" basis. The MPEG Software Simulation Group disclaims * any and all warranties, whether express, implied, or statuary, including any * implied warranties or merchantability or of fitness for a particular * purpose. In no event shall the copyright-holder be liable for any * incidental, punitive, or consequential damages of any kind whatsoever * arising from the use of these programs. * * This disclaimer of warranty extends to the user of these programs and user's * customers, employees, agents, transferees, successors, and assigns. * * The MPEG Software Simulation Group does not represent or warrant that the * programs furnished hereunder are free of infringement of any third-party * patents. * * Commercial implementations of MPEG-1 and MPEG-2 video, including shareware, * are subject to royalty fees to patent holders. Many of these patents are * general enough such that they are unavoidable regardless of implementation * design. * */ #include typedef int (*MPEG2_Read)(void *buf, int count, void *ctx); typedef void (*MPEG2_Write)(int x, int y, __u32 argb, void *ctx); typedef struct { int Fault_Flag; /* buffers for multiuse purposes */ char Error_Text[256]; unsigned char _Clip[1024]; unsigned char *Clip; /* pointers to generic picture buffers */ unsigned char *backward_reference_frame[3]; unsigned char *forward_reference_frame[3]; unsigned char *auxframe[3]; unsigned char *current_frame[3]; /* non-normative variables derived from normative elements */ int Coded_Picture_Width; int Coded_Picture_Height; int Chroma_Width; int Chroma_Height; int block_count; int Second_Field; int profile, level; /* normative derived variables (as per ISO/IEC 13818-2) */ int horizontal_size; int vertical_size; int mb_width; int mb_height; double bit_rate; double frame_rate; /* headers */ /* ISO/IEC 13818-2 section 6.2.2.1: sequence_header() */ int aspect_ratio_information; int frame_rate_code; int bit_rate_value; int vbv_buffer_size; int constrained_parameters_flag; /* ISO/IEC 13818-2 section 6.2.2.3: sequence_extension() */ int profile_and_level_indication; int progressive_sequence; int chroma_format; int low_delay; int frame_rate_extension_n; int frame_rate_extension_d; /* ISO/IEC 13818-2 section 6.2.2.4: sequence_display_extension() */ int video_format; int color_description; int color_primaries; int transfer_characteristics; int matrix_coefficients; int display_horizontal_size; int display_vertical_size; /* ISO/IEC 13818-2 section 6.2.3: picture_header() */ int temporal_reference; int picture_coding_type; int vbv_delay; int full_pel_forward_vector; int forward_f_code; int full_pel_backward_vector; int backward_f_code; /* ISO/IEC 13818-2 section 6.2.3.1: picture_coding_extension() header */ int f_code[2][2]; int intra_dc_precision; int picture_structure; int top_field_first; int frame_pred_frame_dct; int concealment_motion_vectors; int intra_vlc_format; int repeat_first_field; int chroma_420_type; int progressive_frame; int composite_display_flag; int v_axis; int field_sequence; int sub_carrier; int burst_amplitude; int sub_carrier_phase; /* ISO/IEC 13818-2 section 6.2.3.3: picture_display_extension() header */ int frame_center_horizontal_offset[3]; int frame_center_vertical_offset[3]; /* ISO/IEC 13818-2 section 6.2.3.6: copyright_extension() header */ int copyright_flag; int copyright_identifier; int original_or_copy; int copyright_number_1; int copyright_number_2; int copyright_number_3; /* ISO/IEC 13818-2 section 6.2.2.6: group_of_pictures_header() */ int drop_flag; int hour; int minute; int sec; int frame; int closed_gop; int broken_link; /* bit input */ MPEG2_Read mpeg2_read; void *mpeg2_read_ctx; MPEG2_Write mpeg2_write; void *mpeg2_write_ctx; unsigned char Rdbfr[2048]; unsigned char *Rdptr; unsigned char Inbfr[16]; /* from mpeg2play */ unsigned int Bfr; unsigned char *Rdmax; int Incnt; int Bitcnt; /* sequence header and quant_matrix_extension() */ int intra_quantizer_matrix[64]; int non_intra_quantizer_matrix[64]; int chroma_intra_quantizer_matrix[64]; int chroma_non_intra_quantizer_matrix[64]; int load_intra_quantizer_matrix; int load_non_intra_quantizer_matrix; int load_chroma_intra_quantizer_matrix; int load_chroma_non_intra_quantizer_matrix; int MPEG2_Flag; /* picture coding extension */ int q_scale_type; int alternate_scan; /* slice/macroblock */ int priority_breakpoint; int quantizer_scale; int intra_slice; short block[12][64]; int global_MBA; int global_pic; int True_Framenum; } MPEG2_Decoder; MPEG2_Decoder *MPEG2_Init(MPEG2_Read mpeg2_read, void *read_ctx, int *width, int *height); int MPEG2_Decode(MPEG2_Decoder *dec, MPEG2_Write mpeg2_write, void *write_ctx); void MPEG2_Close(MPEG2_Decoder *dec); #define ERROR (-1) #define PICTURE_START_CODE 0x100 #define SLICE_START_CODE_MIN 0x101 #define SLICE_START_CODE_MAX 0x1AF #define USER_DATA_START_CODE 0x1B2 #define SEQUENCE_HEADER_CODE 0x1B3 #define SEQUENCE_ERROR_CODE 0x1B4 #define EXTENSION_START_CODE 0x1B5 #define SEQUENCE_END_CODE 0x1B7 #define GROUP_START_CODE 0x1B8 #define SYSTEM_START_CODE_MIN 0x1B9 #define SYSTEM_START_CODE_MAX 0x1FF #define ISO_END_CODE 0x1B9 #define PACK_START_CODE 0x1BA #define SYSTEM_START_CODE 0x1BB #define VIDEO_ELEMENTARY_STREAM 0x1e0 /* scalable_mode */ #define SC_NONE 0 #define SC_DP 1 #define SC_SPAT 2 #define SC_SNR 3 #define SC_TEMP 4 /* picture coding type */ #define I_TYPE 1 #define P_TYPE 2 #define B_TYPE 3 #define D_TYPE 4 /* picture structure */ #define TOP_FIELD 1 #define BOTTOM_FIELD 2 #define FRAME_PICTURE 3 /* macroblock type */ #define MACROBLOCK_INTRA 1 #define MACROBLOCK_PATTERN 2 #define MACROBLOCK_MOTION_BACKWARD 4 #define MACROBLOCK_MOTION_FORWARD 8 #define MACROBLOCK_QUANT 16 #define SPATIAL_TEMPORAL_WEIGHT_CODE_FLAG 32 #define PERMITTED_SPATIAL_TEMPORAL_WEIGHT_CLASS 64 /* motion_type */ #define MC_FIELD 1 #define MC_FRAME 2 #define MC_16X8 2 #define MC_DMV 3 /* mv_format */ #define MV_FIELD 0 #define MV_FRAME 1 /* chroma_format */ #define CHROMA420 1 #define CHROMA422 2 #define CHROMA444 3 /* extension start code IDs */ #define SEQUENCE_EXTENSION_ID 1 #define SEQUENCE_DISPLAY_EXTENSION_ID 2 #define QUANT_MATRIX_EXTENSION_ID 3 #define COPYRIGHT_EXTENSION_ID 4 #define SEQUENCE_SCALABLE_EXTENSION_ID 5 #define PICTURE_DISPLAY_EXTENSION_ID 7 #define PICTURE_CODING_EXTENSION_ID 8 #define PICTURE_SPATIAL_SCALABLE_EXTENSION_ID 9 #define PICTURE_TEMPORAL_SCALABLE_EXTENSION_ID 10 #define ZIG_ZAG 0 #define PROFILE_422 (128+5) #define MAIN_LEVEL 8 /* Layers: used by Verbose_Flag, Verifier_Flag, Stats_Flag, and Trace_Flag */ #define NO_LAYER 0 #define SEQUENCE_LAYER 1 #define PICTURE_LAYER 2 #define SLICE_LAYER 3 #define MACROBLOCK_LAYER 4 #define BLOCK_LAYER 5 #define EVENT_LAYER 6 #define ALL_LAYERS 7 #define FILENAME_LENGTH 256 #define MB_WEIGHT 32 #define MB_CLASS4 64