1 /* 2 * mpeg2_internal.h 3 * Copyright (C) 2000-2003 Michel Lespinasse <walken@zoy.org> 4 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca> 5 * 6 * This file is part of mpeg2dec, a free MPEG-2 video stream decoder. 7 * See http://libmpeg2.sourceforge.net/ for updates. 8 * 9 * mpeg2dec is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * mpeg2dec is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 * Modified for use with MPlayer, see libmpeg2_changes.diff for the exact changes. 24 * detailed changelog at http://svn.mplayerhq.hu/mplayer/trunk/ 25 * $Id: mpeg2_internal.h 31395 2010-06-14 08:55:32Z lu_zero $ 26 */ 27 28 #ifndef LIBMPEG2_MPEG2_INTERNAL_H 29 #define LIBMPEG2_MPEG2_INTERNAL_H 30 31 #define STATE_INTERNAL_NORETURN ((mpeg2_state_t)-1) 32 33 /* macroblock modes */ 34 #define MACROBLOCK_INTRA 1 35 #define MACROBLOCK_PATTERN 2 36 #define MACROBLOCK_MOTION_BACKWARD 4 37 #define MACROBLOCK_MOTION_FORWARD 8 38 #define MACROBLOCK_QUANT 16 39 #define DCT_TYPE_INTERLACED 32 40 /* motion_type */ 41 #define MOTION_TYPE_SHIFT 6 42 #define MC_FIELD 1 43 #define MC_FRAME 2 44 #define MC_16X8 2 45 #define MC_DMV 3 46 47 /* picture structure */ 48 #define TOP_FIELD 1 49 #define BOTTOM_FIELD 2 50 #define FRAME_PICTURE 3 51 52 /* picture coding type */ 53 #define I_TYPE 1 54 #define P_TYPE 2 55 #define B_TYPE 3 56 #define D_TYPE 4 57 58 typedef void mpeg2_mc_fct (uint8_t *, const uint8_t *, int, int); 59 60 typedef struct { 61 uint8_t * ref[2][3]; 62 uint8_t ** ref2[2]; 63 int pmv[2][2]; 64 int f_code[2]; 65 } motion_t; 66 67 typedef void motion_parser_t (mpeg2_decoder_t * decoder, 68 motion_t * motion, 69 mpeg2_mc_fct * const * table); 70 71 struct mpeg2_decoder_s { 72 /* first, state that carries information from one macroblock to the */ 73 /* next inside a slice, and is never used outside of mpeg2_slice() */ 74 75 /* bit parsing stuff */ 76 uint32_t bitstream_buf; /* current 32 bit working set */ 77 int bitstream_bits; /* used bits in working set */ 78 const uint8_t * bitstream_ptr; /* buffer with stream data */ 79 80 uint8_t * dest[3]; 81 82 int offset; 83 int stride; 84 int uv_stride; 85 int slice_stride; 86 int slice_uv_stride; 87 int stride_frame; 88 unsigned int limit_x; 89 unsigned int limit_y_16; 90 unsigned int limit_y_8; 91 unsigned int limit_y; 92 93 /* Motion vectors */ 94 /* The f_ and b_ correspond to the forward and backward motion */ 95 /* predictors */ 96 motion_t b_motion; 97 motion_t f_motion; 98 motion_parser_t * motion_parser[5]; 99 100 /* predictor for DC coefficients in intra blocks */ 101 int16_t dc_dct_pred[3]; 102 103 /* DCT coefficients */ 104 int16_t DCTblock[64] ATTR_ALIGN(64); 105 106 uint8_t * picture_dest[3]; 107 void (* convert) (void * convert_id, uint8_t * const * src, 108 unsigned int v_offset); 109 void * convert_id; 110 111 int dmv_offset; 112 unsigned int v_offset; 113 114 /* now non-slice-specific information */ 115 116 /* sequence header stuff */ 117 uint16_t * quantizer_matrix[4]; 118 uint16_t (* chroma_quantizer[2])[64]; 119 uint16_t quantizer_prescale[4][32][64]; 120 121 /* The width and height of the picture snapped to macroblock units */ 122 int width; 123 int height; 124 int vertical_position_extension; 125 int chroma_format; 126 127 /* picture header stuff */ 128 129 /* what type of picture this is (I, P, B, D) */ 130 int coding_type; 131 132 /* picture coding extension stuff */ 133 134 /* quantization factor for intra dc coefficients */ 135 int intra_dc_precision; 136 /* top/bottom/both fields */ 137 int picture_structure; 138 /* bool to indicate all predictions are frame based */ 139 int frame_pred_frame_dct; 140 /* bool to indicate whether intra blocks have motion vectors */ 141 /* (for concealment) */ 142 int concealment_motion_vectors; 143 /* bool to use different vlc tables */ 144 int intra_vlc_format; 145 /* used for DMV MC */ 146 int top_field_first; 147 148 /* stuff derived from bitstream */ 149 150 /* pointer to the zigzag scan we're supposed to be using */ 151 const uint8_t * scan; 152 153 int second_field; 154 155 int mpeg1; 156 157 /* XXX: stuff due to xine shit */ 158 int8_t q_scale_type; 159 160 int quantizer_scales[32]; 161 int quantizer_scale; 162 char* quant_store; 163 int quant_stride; 164 }; 165 166 typedef struct { 167 mpeg2_fbuf_t fbuf; 168 } fbuf_alloc_t; 169 170 struct mpeg2dec_s { 171 mpeg2_decoder_t decoder; 172 173 mpeg2_info_t info; 174 175 uint32_t shift; 176 int is_display_initialized; 177 mpeg2_state_t (* action) (struct mpeg2dec_s * mpeg2dec); 178 mpeg2_state_t state; 179 uint32_t ext_state; 180 181 /* allocated in init - gcc has problems allocating such big structures */ 182 uint8_t * chunk_buffer; 183 /* pointer to start of the current chunk */ 184 uint8_t * chunk_start; 185 /* pointer to current position in chunk_buffer */ 186 uint8_t * chunk_ptr; 187 /* last start code ? */ 188 uint8_t code; 189 190 /* picture tags */ 191 uint32_t tag_current, tag2_current, tag_previous, tag2_previous; 192 int num_tags; 193 int bytes_since_tag; 194 195 int first; 196 int alloc_index_user; 197 int alloc_index; 198 uint8_t first_decode_slice; 199 uint8_t nb_decode_slices; 200 201 unsigned int user_data_len; 202 203 mpeg2_sequence_t new_sequence; 204 mpeg2_sequence_t sequence; 205 mpeg2_gop_t new_gop; 206 mpeg2_gop_t gop; 207 mpeg2_picture_t new_picture; 208 mpeg2_picture_t pictures[4]; 209 mpeg2_picture_t * picture; 210 /*const*/ mpeg2_fbuf_t * fbuf[3]; /* 0: current fbuf, 1-2: prediction fbufs */ 211 212 fbuf_alloc_t fbuf_alloc[3]; 213 int custom_fbuf; 214 215 uint8_t * yuv_buf[3][3]; 216 int yuv_index; 217 mpeg2_convert_t * convert; 218 void * convert_arg; 219 unsigned int convert_id_size; 220 int convert_stride; 221 void (* convert_start) (void * id, const mpeg2_fbuf_t * fbuf, 222 const mpeg2_picture_t * picture, 223 const mpeg2_gop_t * gop); 224 225 uint8_t * buf_start; 226 uint8_t * buf_end; 227 228 int16_t display_offset_x, display_offset_y; 229 230 int copy_matrix; 231 int8_t scaled[4]; /* XXX: MOVED */ 232 //int8_t q_scale_type, scaled[4]; 233 uint8_t quantizer_matrix[4][64]; 234 uint8_t new_quantizer_matrix[4][64]; 235 }; 236 237 typedef struct { 238 #if ARCH_PPC 239 uint8_t regv[12*16]; 240 #endif 241 int dummy; 242 } cpu_state_t; 243 244 /* cpu_accel.c */ 245 uint32_t mpeg2_detect_accel (uint32_t accel); 246 247 /* cpu_state.c */ 248 void mpeg2_cpu_state_init (uint32_t accel); 249 250 /* decode.c */ 251 mpeg2_state_t mpeg2_seek_header (mpeg2dec_t * mpeg2dec); 252 mpeg2_state_t mpeg2_parse_header (mpeg2dec_t * mpeg2dec); 253 254 /* header.c */ 255 void mpeg2_header_state_init (mpeg2dec_t * mpeg2dec); 256 void mpeg2_reset_info (mpeg2_info_t * info); 257 int mpeg2_header_sequence (mpeg2dec_t * mpeg2dec); 258 int mpeg2_header_gop (mpeg2dec_t * mpeg2dec); 259 mpeg2_state_t mpeg2_header_picture_start (mpeg2dec_t * mpeg2dec); 260 int mpeg2_header_picture (mpeg2dec_t * mpeg2dec); 261 int mpeg2_header_extension (mpeg2dec_t * mpeg2dec); 262 int mpeg2_header_user_data (mpeg2dec_t * mpeg2dec); 263 void mpeg2_header_sequence_finalize (mpeg2dec_t * mpeg2dec); 264 void mpeg2_header_gop_finalize (mpeg2dec_t * mpeg2dec); 265 void mpeg2_header_picture_finalize (mpeg2dec_t * mpeg2dec, uint32_t accels); 266 mpeg2_state_t mpeg2_header_slice_start (mpeg2dec_t * mpeg2dec); 267 mpeg2_state_t mpeg2_header_end (mpeg2dec_t * mpeg2dec); 268 void mpeg2_set_fbuf (mpeg2dec_t * mpeg2dec, int b_type); 269 270 /* idct.c */ 271 extern void mpeg2_idct_init (uint32_t accel); 272 extern uint8_t mpeg2_scan_norm[64]; 273 extern uint8_t mpeg2_scan_alt[64]; 274 275 /* idct_mmx.c */ 276 void mpeg2_idct_copy_sse2 (int16_t * block, uint8_t * dest, int stride); 277 void mpeg2_idct_add_sse2 (int last, int16_t * block, 278 uint8_t * dest, int stride); 279 void mpeg2_idct_copy_mmxext (int16_t * block, uint8_t * dest, int stride); 280 void mpeg2_idct_add_mmxext (int last, int16_t * block, 281 uint8_t * dest, int stride); 282 void mpeg2_idct_copy_mmx (int16_t * block, uint8_t * dest, int stride); 283 void mpeg2_idct_add_mmx (int last, int16_t * block, 284 uint8_t * dest, int stride); 285 void mpeg2_idct_mmx_init (void); 286 287 /* idct_altivec.c */ 288 void mpeg2_idct_copy_altivec (int16_t * block, uint8_t * dest, int stride); 289 void mpeg2_idct_add_altivec (int last, int16_t * block, 290 uint8_t * dest, int stride); 291 void mpeg2_idct_altivec_init (void); 292 293 /* idct_alpha.c */ 294 void mpeg2_idct_copy_mvi (int16_t * block, uint8_t * dest, int stride); 295 void mpeg2_idct_add_mvi (int last, int16_t * block, 296 uint8_t * dest, int stride); 297 void mpeg2_idct_copy_alpha (int16_t * block, uint8_t * dest, int stride); 298 void mpeg2_idct_add_alpha (int last, int16_t * block, 299 uint8_t * dest, int stride); 300 void mpeg2_idct_alpha_init (void); 301 302 /* motion_comp.c */ 303 void mpeg2_mc_init (uint32_t accel); 304 305 typedef struct { 306 mpeg2_mc_fct * put [8]; 307 mpeg2_mc_fct * avg [8]; 308 } mpeg2_mc_t; 309 310 #define MPEG2_MC_EXTERN(x) mpeg2_mc_t mpeg2_mc_##x = { \ 311 {MC_put_o_16_##x, MC_put_x_16_##x, MC_put_y_16_##x, MC_put_xy_16_##x, \ 312 MC_put_o_8_##x, MC_put_x_8_##x, MC_put_y_8_##x, MC_put_xy_8_##x}, \ 313 {MC_avg_o_16_##x, MC_avg_x_16_##x, MC_avg_y_16_##x, MC_avg_xy_16_##x, \ 314 MC_avg_o_8_##x, MC_avg_x_8_##x, MC_avg_y_8_##x, MC_avg_xy_8_##x} \ 315 }; 316 317 extern mpeg2_mc_t mpeg2_mc_c; 318 extern mpeg2_mc_t mpeg2_mc_mmx; 319 extern mpeg2_mc_t mpeg2_mc_mmxext; 320 extern mpeg2_mc_t mpeg2_mc_3dnow; 321 extern mpeg2_mc_t mpeg2_mc_altivec; 322 extern mpeg2_mc_t mpeg2_mc_alpha; 323 extern mpeg2_mc_t mpeg2_mc_vis; 324 extern mpeg2_mc_t mpeg2_mc_arm; 325 326 #endif /* LIBMPEG2_MPEG2_INTERNAL_H */ 327