/* 2004.02.01 first released source code for IOMP */ /* * mpeg2_internal.h * Copyright (C) 2000-2002 Michel Lespinasse * Copyright (C) 1999-2000 Aaron Holtzman * * This file is part of mpeg2dec, a free MPEG-2 video stream decoder. * See http://libmpeg2.sourceforge.net/ for updates. * * mpeg2dec is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * mpeg2dec is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* macroblock modes */ #define MACROBLOCK_INTRA 1 #define MACROBLOCK_PATTERN 2 #define MACROBLOCK_MOTION_BACKWARD 4 #define MACROBLOCK_MOTION_FORWARD 8 #define MACROBLOCK_QUANT 16 #define DCT_TYPE_INTERLACED 32 /* motion_type */ #define MOTION_TYPE_MASK (3*64) #define MOTION_TYPE_BASE 64 #define MC_FIELD (1*64) #define MC_FRAME (2*64) #define MC_16X8 (2*64) #define MC_DMV (3*64) /* picture structure */ #define TOP_FIELD 1 #define BOTTOM_FIELD 2 #define FRAME_PICTURE 3 /* picture coding type */ #define I_TYPE 1 #define P_TYPE 2 #define B_TYPE 3 #define D_TYPE 4 typedef struct motion_s { uint8_t * ref[2][3]; uint8_t ** ref2[2]; int pmv[2][2]; int f_code[2]; } motion_t; typedef struct picture_s { /* first, state that carries information from one macroblock to the */ /* next inside a slice, and is never used outside of mpeg2_slice() */ /* DCT coefficients - should be kept aligned ! */ int16_t DCTblock[64]; /* bit parsing stuff */ uint32_t bitstream_buf; /* current 32 bit working set of buffer */ int bitstream_bits; /* used bits in working set */ uint8_t * bitstream_ptr; /* buffer with stream data */ uint8_t * dest[3]; int pitches[3]; int offset; unsigned int limit_x; unsigned int limit_y_16; unsigned int limit_y_8; unsigned int limit_y; /* Motion vectors */ /* The f_ and b_ correspond to the forward and backward motion */ /* predictors */ motion_t b_motion; motion_t f_motion; /* predictor for DC coefficients in intra blocks */ int16_t dc_dct_pred[3]; int quantizer_scale; /* remove */ int current_field; /* remove */ int dmv_offset; /* remove */ unsigned int v_offset; /* remove */ /* now non-slice-specific information */ /* sequence header stuff */ uint8_t intra_quantizer_matrix [64]; uint8_t non_intra_quantizer_matrix [64]; /* The width and height of the picture snapped to macroblock units */ int coded_picture_width; int coded_picture_height; /* picture header stuff */ /* what type of picture this is (I, P, B, D) */ int picture_coding_type; int vbv_delay; int low_delay; /* picture coding extension stuff */ /* quantization factor for intra dc coefficients */ int intra_dc_precision; /* top/bottom/both fields */ int picture_structure; /* bool to indicate all predictions are frame based */ int frame_pred_frame_dct; /* bool to indicate whether intra blocks have motion vectors */ /* (for concealment) */ int concealment_motion_vectors; /* bit to indicate which quantization table to use */ int q_scale_type; /* bool to use different vlc tables */ int intra_vlc_format; /* used for DMV MC */ int top_field_first; /* stuff derived from bitstream */ /* pointer to the zigzag scan we're supposed to be using */ uint8_t * scan; struct vo_frame_s * current_frame; struct vo_frame_s * forward_reference_frame; struct vo_frame_s * backward_reference_frame; int frame_width, frame_height; int second_field; int mpeg1; int skip_non_intra_dct; /* these things are not needed by the decoder */ /* this is a temporary interface, we will build a better one later. */ int aspect_ratio_information; int frame_rate_code; int progressive_sequence; int repeat_first_field; int progressive_frame; uint32_t frame_centre_horizontal_offset; uint32_t frame_centre_vertical_offset; uint32_t video_format; uint32_t colour_description; uint32_t colour_primatives; uint32_t transfer_characteristics; uint32_t matrix_coefficients; uint32_t display_horizontal_size; uint32_t display_vertical_size; uint32_t drop_frame_flag; uint32_t time_code_hours; uint32_t time_code_minutes; uint32_t time_code_seconds; uint32_t time_code_pictures; uint32_t closed_gop; uint32_t broken_link; int bitrate; int frame_rate_ext_n; int frame_rate_ext_d; } picture_t; typedef struct cpu_state_s { #ifdef ARCH_PPC uint8_t regv[12*16]; #endif int dummy; } cpu_state_t; /* cpu_state.c */ void mpeg2_cpu_state_init (uint32_t mm_accel); /* header.c */ void mpeg2_header_state_init (picture_t * picture); int mpeg2_header_picture (picture_t * picture, uint8_t * buffer); int mpeg2_header_sequence (picture_t * picture, uint8_t * buffer, int force_aspec); int mpeg2_header_extension (picture_t * picture, uint8_t * buffer); int mpeg2_header_group_of_pictures (picture_t * picture, uint8_t * buffer); /* idct.c */ void mpeg2_idct_init (uint32_t mm_accel); /* idct_mlib.c */ void mpeg2_idct_add_mlib (int16_t * block, uint8_t * dest, int stride); void mpeg2_idct_copy_mlib_non_ieee (int16_t * block, uint8_t * dest, int stride); void mpeg2_idct_add_mlib_non_ieee (int16_t * block, uint8_t * dest, int stride); /* idct_mmx.c */ void mpeg2_idct_copy_mmxext (int16_t * block, uint8_t * dest, int stride); void mpeg2_idct_add_mmxext (int16_t * block, uint8_t * dest, int stride); void mpeg2_idct_copy_mmx (int16_t * block, uint8_t * dest, int stride); void mpeg2_idct_add_mmx (int16_t * block, uint8_t * dest, int stride); void mpeg2_idct_mmx_init (void); /* idct_altivec.c */ void mpeg2_idct_copy_altivec (int16_t * block, uint8_t * dest, int stride); void mpeg2_idct_add_altivec (int16_t * block, uint8_t * dest, int stride); void mpeg2_idct_altivec_init (void); /* motion_comp.c */ void mpeg2_mc_init (uint32_t mm_accel); typedef struct mpeg2_mc_s { void (* put [8]) (uint8_t * dst, uint8_t *, int32_t, int32_t); void (* avg [8]) (uint8_t * dst, uint8_t *, int32_t, int32_t); } mpeg2_mc_t; #define MPEG2_MC_EXTERN(x) mpeg2_mc_t mpeg2_mc_##x = { \ {MC_put_o_16_##x, MC_put_x_16_##x, MC_put_y_16_##x, MC_put_xy_16_##x, \ MC_put_o_8_##x, MC_put_x_8_##x, MC_put_y_8_##x, MC_put_xy_8_##x}, \ {MC_avg_o_16_##x, MC_avg_x_16_##x, MC_avg_y_16_##x, MC_avg_xy_16_##x, \ MC_avg_o_8_##x, MC_avg_x_8_##x, MC_avg_y_8_##x, MC_avg_xy_8_##x} \ }; extern mpeg2_mc_t mpeg2_mc_c; extern mpeg2_mc_t mpeg2_mc_mmx; extern mpeg2_mc_t mpeg2_mc_mmxext; extern mpeg2_mc_t mpeg2_mc_3dnow; extern mpeg2_mc_t mpeg2_mc_altivec; extern mpeg2_mc_t mpeg2_mc_mlib; /* slice.c */ void mpeg2_slice (picture_t * picture, int code, uint8_t * buffer); /* stats.c */ void mpeg2_stats (int code, uint8_t * buffer);