diff options
Diffstat (limited to 'TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/decoders.cpp')
| -rw-r--r-- | TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/decoders.cpp | 938 |
1 files changed, 938 insertions, 0 deletions
diff --git a/TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/decoders.cpp b/TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/decoders.cpp new file mode 100644 index 00000000000..91585213d1f --- /dev/null +++ b/TAO/orbsvcs/tests/AVStreams/mpeg/source/mpeg_client/decoders.cpp @@ -0,0 +1,938 @@ +/* $Id$ */ + +/* + * Copyright (c) 1992 The Regents of the University of California. + * All rights reserved. + * + * Permission to use, copy, modify, and distribute this software and its + * documentation for any purpose, without fee, and without written agreement is + * hereby granted, provided that the above copyright notice and the following + * two paragraphs appear in all copies of this software. + * + * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR + * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT + * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF + * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES, + * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS + * ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO + * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +/* + * decoders.c + * + * This file contains all the routines for Huffman decoding required in + * MPEG + * + */ + +#include "ace/OS.h" +#include <stdio.h> +#include <assert.h> +#include "decoders.h" +#include "util.h" +#include "video.h" +#include "proto.h" + +ACE_RCSID(mpeg_client, decoders, "$Id$") + +/* Decoding table for macroblock_address_increment */ +mb_addr_inc_entry mb_addr_inc[2048]; + +/* Decoding table for macroblock_type in predictive-coded pictures */ +mb_type_entry mb_type_P[64]; + +/* Decoding table for macroblock_type in bidirectionally-coded pictures */ +mb_type_entry mb_type_B[64]; + +/* Decoding table for motion vectors */ +motion_vectors_entry motion_vectors[2048]; + +/* Decoding table for coded_block_pattern */ + +coded_block_pattern_entry coded_block_pattern[512] = +{ {(unsigned int)ERROR, 0}, {(unsigned int)ERROR, 0}, {39, 9}, {27, 9}, {59, 9}, {55, 9}, {47, 9}, {31, 9}, + {58, 8}, {58, 8}, {54, 8}, {54, 8}, {46, 8}, {46, 8}, {30, 8}, {30, 8}, + {57, 8}, {57, 8}, {53, 8}, {53, 8}, {45, 8}, {45, 8}, {29, 8}, {29, 8}, + {38, 8}, {38, 8}, {26, 8}, {26, 8}, {37, 8}, {37, 8}, {25, 8}, {25, 8}, + {43, 8}, {43, 8}, {23, 8}, {23, 8}, {51, 8}, {51, 8}, {15, 8}, {15, 8}, + {42, 8}, {42, 8}, {22, 8}, {22, 8}, {50, 8}, {50, 8}, {14, 8}, {14, 8}, + {41, 8}, {41, 8}, {21, 8}, {21, 8}, {49, 8}, {49, 8}, {13, 8}, {13, 8}, + {35, 8}, {35, 8}, {19, 8}, {19, 8}, {11, 8}, {11, 8}, {7, 8}, {7, 8}, + {34, 7}, {34, 7}, {34, 7}, {34, 7}, {18, 7}, {18, 7}, {18, 7}, {18, 7}, + {10, 7}, {10, 7}, {10, 7}, {10, 7}, {6, 7}, {6, 7}, {6, 7}, {6, 7}, + {33, 7}, {33, 7}, {33, 7}, {33, 7}, {17, 7}, {17, 7}, {17, 7}, {17, 7}, + {9, 7}, {9, 7}, {9, 7}, {9, 7}, {5, 7}, {5, 7}, {5, 7}, {5, 7}, + {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, + {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, {3, 6}, + {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, + {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, {24, 6}, + {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, + {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, {62, 5}, + {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, + {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, {2, 5}, + {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, + {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, {61, 5}, + {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, + {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, {1, 5}, + {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, + {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, {56, 5}, + {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, + {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, {52, 5}, + {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, + {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, {44, 5}, + {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, + {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, {28, 5}, + {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, + {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, {40, 5}, + {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, + {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, {20, 5}, + {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, + {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, {48, 5}, + {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, + {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, {12, 5}, + {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, + {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, + {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, + {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, {32, 4}, + {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, + {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, + {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, + {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, {16, 4}, + {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, + {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, + {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, + {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, {8, 4}, + {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, + {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, + {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, + {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, + {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, + {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, + {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, + {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, + {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, + {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, + {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, + {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3}, {60, 3} +}; + +/* Decoding table for dct_dc_size_luminance */ +dct_dc_size_entry dct_dc_size_luminance[128] = +{ {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {0, 3}, {0, 3}, {0, 3}, {0, 3}, {0, 3}, {0, 3}, {0, 3}, {0, 3}, + {0, 3}, {0, 3}, {0, 3}, {0, 3}, {0, 3}, {0, 3}, {0, 3}, {0, 3}, + {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, + {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, + {4, 3}, {4, 3}, {4, 3}, {4, 3}, {4, 3}, {4, 3}, {4, 3}, {4, 3}, + {4, 3}, {4, 3}, {4, 3}, {4, 3}, {4, 3}, {4, 3}, {4, 3}, {4, 3}, + {5, 4}, {5, 4}, {5, 4}, {5, 4}, {5, 4}, {5, 4}, {5, 4}, {5, 4}, + {6, 5}, {6, 5}, {6, 5}, {6, 5}, {7, 6}, {7, 6}, {8, 7}, {(unsigned int)ERROR, 0} +}; + +/* Decoding table for dct_dc_size_chrominance */ +dct_dc_size_entry dct_dc_size_chrominance[256] = +{ {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, + {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, + {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, + {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, + {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, + {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, + {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, + {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, {0, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, {1, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, {2, 2}, + {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, + {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, + {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, + {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, + {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, + {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, + {5, 5}, {5, 5}, {5, 5}, {5, 5}, {5, 5}, {5, 5}, {5, 5}, {5, 5}, + {6, 6}, {6, 6}, {6, 6}, {6, 6}, {7, 7}, {7, 7}, {8, 8}, {(unsigned int)ERROR, 0} +}; + +/* DCT coeff tables. */ + +unsigned short int dct_coeff_tbl_0[256] = +{ +0xffff, 0xffff, 0xffff, 0xffff, +0xffff, 0xffff, 0xffff, 0xffff, +0xffff, 0xffff, 0xffff, 0xffff, +0xffff, 0xffff, 0xffff, 0xffff, +0x052f, 0x051f, 0x050f, 0x04ff, +0x183f, 0x402f, 0x3c2f, 0x382f, +0x342f, 0x302f, 0x2c2f, 0x7c1f, +0x781f, 0x741f, 0x701f, 0x6c1f, +0x028e, 0x028e, 0x027e, 0x027e, +0x026e, 0x026e, 0x025e, 0x025e, +0x024e, 0x024e, 0x023e, 0x023e, +0x022e, 0x022e, 0x021e, 0x021e, +0x020e, 0x020e, 0x04ee, 0x04ee, +0x04de, 0x04de, 0x04ce, 0x04ce, +0x04be, 0x04be, 0x04ae, 0x04ae, +0x049e, 0x049e, 0x048e, 0x048e, +0x01fd, 0x01fd, 0x01fd, 0x01fd, +0x01ed, 0x01ed, 0x01ed, 0x01ed, +0x01dd, 0x01dd, 0x01dd, 0x01dd, +0x01cd, 0x01cd, 0x01cd, 0x01cd, +0x01bd, 0x01bd, 0x01bd, 0x01bd, +0x01ad, 0x01ad, 0x01ad, 0x01ad, +0x019d, 0x019d, 0x019d, 0x019d, +0x018d, 0x018d, 0x018d, 0x018d, +0x017d, 0x017d, 0x017d, 0x017d, +0x016d, 0x016d, 0x016d, 0x016d, +0x015d, 0x015d, 0x015d, 0x015d, +0x014d, 0x014d, 0x014d, 0x014d, +0x013d, 0x013d, 0x013d, 0x013d, +0x012d, 0x012d, 0x012d, 0x012d, +0x011d, 0x011d, 0x011d, 0x011d, +0x010d, 0x010d, 0x010d, 0x010d, +0x282c, 0x282c, 0x282c, 0x282c, +0x282c, 0x282c, 0x282c, 0x282c, +0x242c, 0x242c, 0x242c, 0x242c, +0x242c, 0x242c, 0x242c, 0x242c, +0x143c, 0x143c, 0x143c, 0x143c, +0x143c, 0x143c, 0x143c, 0x143c, +0x0c4c, 0x0c4c, 0x0c4c, 0x0c4c, +0x0c4c, 0x0c4c, 0x0c4c, 0x0c4c, +0x085c, 0x085c, 0x085c, 0x085c, +0x085c, 0x085c, 0x085c, 0x085c, +0x047c, 0x047c, 0x047c, 0x047c, +0x047c, 0x047c, 0x047c, 0x047c, +0x046c, 0x046c, 0x046c, 0x046c, +0x046c, 0x046c, 0x046c, 0x046c, +0x00fc, 0x00fc, 0x00fc, 0x00fc, +0x00fc, 0x00fc, 0x00fc, 0x00fc, +0x00ec, 0x00ec, 0x00ec, 0x00ec, +0x00ec, 0x00ec, 0x00ec, 0x00ec, +0x00dc, 0x00dc, 0x00dc, 0x00dc, +0x00dc, 0x00dc, 0x00dc, 0x00dc, +0x00cc, 0x00cc, 0x00cc, 0x00cc, +0x00cc, 0x00cc, 0x00cc, 0x00cc, +0x681c, 0x681c, 0x681c, 0x681c, +0x681c, 0x681c, 0x681c, 0x681c, +0x641c, 0x641c, 0x641c, 0x641c, +0x641c, 0x641c, 0x641c, 0x641c, +0x601c, 0x601c, 0x601c, 0x601c, +0x601c, 0x601c, 0x601c, 0x601c, +0x5c1c, 0x5c1c, 0x5c1c, 0x5c1c, +0x5c1c, 0x5c1c, 0x5c1c, 0x5c1c, +0x581c, 0x581c, 0x581c, 0x581c, +0x581c, 0x581c, 0x581c, 0x581c, +}; + +unsigned short int dct_coeff_tbl_1[16] = +{ +0x00bb, 0x202b, 0x103b, 0x00ab, +0x084b, 0x1c2b, 0x541b, 0x501b, +0x009b, 0x4c1b, 0x481b, 0x045b, +0x0c3b, 0x008b, 0x182b, 0x441b, +}; + +unsigned short int dct_coeff_tbl_2[4] = +{ +0x4019, 0x1429, 0x0079, 0x0839, +}; + +unsigned short int dct_coeff_tbl_3[4] = +{ +0x0449, 0x3c19, 0x3819, 0x1029, +}; + +unsigned short int dct_coeff_next[256] = +{ +0xffff, 0xffff, 0xffff, 0xffff, +0xf7d5, 0xf7d5, 0xf7d5, 0xf7d5, +0x0826, 0x0826, 0x2416, 0x2416, +0x0046, 0x0046, 0x2016, 0x2016, +0x1c15, 0x1c15, 0x1c15, 0x1c15, +0x1815, 0x1815, 0x1815, 0x1815, +0x0425, 0x0425, 0x0425, 0x0425, +0x1415, 0x1415, 0x1415, 0x1415, +0x3417, 0x0067, 0x3017, 0x2c17, +0x0c27, 0x0437, 0x0057, 0x2817, +0x0034, 0x0034, 0x0034, 0x0034, +0x0034, 0x0034, 0x0034, 0x0034, +0x1014, 0x1014, 0x1014, 0x1014, +0x1014, 0x1014, 0x1014, 0x1014, +0x0c14, 0x0c14, 0x0c14, 0x0c14, +0x0c14, 0x0c14, 0x0c14, 0x0c14, +0x0023, 0x0023, 0x0023, 0x0023, +0x0023, 0x0023, 0x0023, 0x0023, +0x0023, 0x0023, 0x0023, 0x0023, +0x0023, 0x0023, 0x0023, 0x0023, +0x0813, 0x0813, 0x0813, 0x0813, +0x0813, 0x0813, 0x0813, 0x0813, +0x0813, 0x0813, 0x0813, 0x0813, +0x0813, 0x0813, 0x0813, 0x0813, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0xfbe1, 0xfbe1, 0xfbe1, 0xfbe1, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +0x0011, 0x0011, 0x0011, 0x0011, +}; + +unsigned short int dct_coeff_first[256] = +{ +0xffff, 0xffff, 0xffff, 0xffff, +0xf7d5, 0xf7d5, 0xf7d5, 0xf7d5, +0x0826, 0x0826, 0x2416, 0x2416, +0x0046, 0x0046, 0x2016, 0x2016, +0x1c15, 0x1c15, 0x1c15, 0x1c15, +0x1815, 0x1815, 0x1815, 0x1815, +0x0425, 0x0425, 0x0425, 0x0425, +0x1415, 0x1415, 0x1415, 0x1415, +0x3417, 0x0067, 0x3017, 0x2c17, +0x0c27, 0x0437, 0x0057, 0x2817, +0x0034, 0x0034, 0x0034, 0x0034, +0x0034, 0x0034, 0x0034, 0x0034, +0x1014, 0x1014, 0x1014, 0x1014, +0x1014, 0x1014, 0x1014, 0x1014, +0x0c14, 0x0c14, 0x0c14, 0x0c14, +0x0c14, 0x0c14, 0x0c14, 0x0c14, +0x0023, 0x0023, 0x0023, 0x0023, +0x0023, 0x0023, 0x0023, 0x0023, +0x0023, 0x0023, 0x0023, 0x0023, +0x0023, 0x0023, 0x0023, 0x0023, +0x0813, 0x0813, 0x0813, 0x0813, +0x0813, 0x0813, 0x0813, 0x0813, +0x0813, 0x0813, 0x0813, 0x0813, +0x0813, 0x0813, 0x0813, 0x0813, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0412, 0x0412, 0x0412, 0x0412, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +0x0010, 0x0010, 0x0010, 0x0010, +}; + +/* Macro for filling up the decoding table for mb_addr_inc */ +#define ASSIGN1(start, end, step, val, num) \ + for (i = start; i < end; i+= step) { \ + for (j = 0; j < step; j++) { \ + mb_addr_inc[i+j].value = val; \ + mb_addr_inc[i+j].num_bits = num; \ + } \ + val--; \ + } + + + +/* + *-------------------------------------------------------------- + * + * init_mb_addr_inc -- + * + * Initialize the VLC decoding table for macro_block_address_increment + * + * Results: + * The decoding table for macro_block_address_increment will + * be filled; illegal values will be filled as ERROR. + * + * Side effects: + * The global array mb_addr_inc will be filled. + * + *-------------------------------------------------------------- + */ +static void +init_mb_addr_inc() +{ + int i, j, val; + + for (i = 0; i < 8; i++) { + mb_addr_inc[i].value = (unsigned int)ERROR; + mb_addr_inc[i].num_bits = 0; + } + + mb_addr_inc[8].value = MACRO_BLOCK_ESCAPE; + mb_addr_inc[8].num_bits = 11; + + for (i = 9; i < 15; i++) { + mb_addr_inc[i].value = (unsigned int)ERROR; + mb_addr_inc[i].num_bits = 0; + } + + mb_addr_inc[15].value = MACRO_BLOCK_STUFFING; + mb_addr_inc[15].num_bits = 11; + + for (i = 16; i < 24; i++) { + mb_addr_inc[i].value = (unsigned int)ERROR; + mb_addr_inc[i].num_bits = 0; + } + + val = 33; + + ASSIGN1(24, 36, 1, val, 11); + ASSIGN1(36, 48, 2, val, 10); + ASSIGN1(48, 96, 8, val, 8); + ASSIGN1(96, 128, 16, val, 7); + ASSIGN1(128, 256, 64, val, 5); + ASSIGN1(256, 512, 128, val, 4); + ASSIGN1(512, 1024, 256, val, 3); + ASSIGN1(1024, 2048, 1024, val, 1); +} + + +/* Macro for filling up the decoding table for mb_type */ +#define ASSIGN2(start, end, quant, motion_forward, motion_backward, pattern, intra, num, mb_type) \ + for (i = start; i < end; i ++) { \ + mb_type[i].mb_quant = quant; \ + mb_type[i].mb_motion_forward = motion_forward; \ + mb_type[i].mb_motion_backward = motion_backward; \ + mb_type[i].mb_pattern = pattern; \ + mb_type[i].mb_intra = intra; \ + mb_type[i].num_bits = num; \ + } + + + +/* + *-------------------------------------------------------------- + * + * init_mb_type_P -- + * + * Initialize the VLC decoding table for macro_block_type in + * predictive-coded pictures. + * + * Results: + * The decoding table for macro_block_type in predictive-coded + * pictures will be filled; illegal values will be filled as ERROR. + * + * Side effects: + * The global array mb_type_P will be filled. + * + *-------------------------------------------------------------- + */ +static void +init_mb_type_P() +{ + int i; + + mb_type_P[0].mb_quant = mb_type_P[0].mb_motion_forward + = mb_type_P[0].mb_motion_backward = mb_type_P[0].mb_pattern + = mb_type_P[0].mb_intra = (unsigned int)ERROR; + mb_type_P[0].num_bits = 0; + + ASSIGN2(1, 2, 1, 0, 0, 0, 1, 6, mb_type_P) + ASSIGN2(2, 4, 1, 0, 0, 1, 0, 5, mb_type_P) + ASSIGN2(4, 6, 1, 1, 0, 1, 0, 5, mb_type_P); + ASSIGN2(6, 8, 0, 0, 0, 0, 1, 5, mb_type_P); + ASSIGN2(8, 16, 0, 1, 0, 0, 0, 3, mb_type_P); + ASSIGN2(16, 32, 0, 0, 0, 1, 0, 2, mb_type_P); + ASSIGN2(32, 64, 0, 1, 0, 1, 0, 1, mb_type_P); +} + + + + +/* + *-------------------------------------------------------------- + * + * init_mb_type_B -- + * + * Initialize the VLC decoding table for macro_block_type in + * bidirectionally-coded pictures. + * + * Results: + * The decoding table for macro_block_type in bidirectionally-coded + * pictures will be filled; illegal values will be filled as ERROR. + * + * Side effects: + * The global array mb_type_B will be filled. + * + *-------------------------------------------------------------- + */ +static void +init_mb_type_B() +{ + int i; + + mb_type_B[0].mb_quant = mb_type_B[0].mb_motion_forward + = mb_type_B[0].mb_motion_backward = mb_type_B[0].mb_pattern + = mb_type_B[0].mb_intra = (unsigned int)ERROR; + mb_type_B[0].num_bits = 0; + + ASSIGN2(1, 2, 1, 0, 0, 0, 1, 6, mb_type_B); + ASSIGN2(2, 3, 1, 0, 1, 1, 0, 6, mb_type_B); + ASSIGN2(3, 4, 1, 1, 0, 1, 0, 6, mb_type_B); + ASSIGN2(4, 6, 1, 1, 1, 1, 0, 5, mb_type_B); + ASSIGN2(6, 8, 0, 0, 0, 0, 1, 5, mb_type_B); + ASSIGN2(8, 12, 0, 1, 0, 0, 0, 4, mb_type_B); + ASSIGN2(12, 16, 0, 1, 0, 1, 0, 4, mb_type_B); + ASSIGN2(16, 24, 0, 0, 1, 0, 0, 3, mb_type_B); + ASSIGN2(24, 32, 0, 0, 1, 1, 0, 3, mb_type_B); + ASSIGN2(32, 48, 0, 1, 1, 0, 0, 2, mb_type_B); + ASSIGN2(48, 64, 0, 1, 1, 1, 0, 2, mb_type_B); +} + + +/* Macro for filling up the decoding tables for motion_vectors */ +#define ASSIGN3(start, end, step, val, num) \ + for (i = start; i < end; i+= step) { \ + for (j = 0; j < step / 2; j++) { \ + motion_vectors[i+j].code = val; \ + motion_vectors[i+j].num_bits = num; \ + } \ + for (j = step / 2; j < step; j++) { \ + motion_vectors[i+j].code = -val; \ + motion_vectors[i+j].num_bits = num; \ + } \ + val--; \ + } + + + +/* + *-------------------------------------------------------------- + * + * init_motion_vectors -- + * + * Initialize the VLC decoding table for the various motion + * vectors, including motion_horizontal_forward_code, + * motion_vertical_forward_code, motion_horizontal_backward_code, + * and motion_vertical_backward_code. + * + * Results: + * The decoding table for the motion vectors will be filled; + * illegal values will be filled as ERROR. + * + * Side effects: + * The global array motion_vector will be filled. + * + *-------------------------------------------------------------- + */ +static void +init_motion_vectors() +{ + int i, j, val = 16; + + for (i = 0; i < 24; i++) { + motion_vectors[i].code = (unsigned int)ERROR; + motion_vectors[i].num_bits = 0; + } + + ASSIGN3(24, 36, 2, val, 11); + ASSIGN3(36, 48, 4, val, 10); + ASSIGN3(48, 96, 16, val, 8); + ASSIGN3(96, 128, 32, val, 7); + ASSIGN3(128, 256, 128, val, 5); + ASSIGN3(256, 512, 256, val, 4); + ASSIGN3(512, 1024, 512, val, 3); + ASSIGN3(1024, 2048, 1024, val, 1); +} + + + + +/* + *-------------------------------------------------------------- + * + * init_tables -- + * + * Initialize all the tables for VLC decoding; this must be + * called when the system is set up before any decoding can + * take place. + * + * Results: + * All the decoding tables will be filled accordingly. + * + * Side effects: + * The corresponding global array for each decoding table + * will be filled. + * + *-------------------------------------------------------------- + */ +void +init_tables() +{ + extern void init_pre_idct(); + + init_mb_addr_inc(); + init_mb_type_P(); + init_mb_type_B(); + init_motion_vectors(); + init_pre_idct(); + +#ifdef ANALYSIS + { + init_stats(); + } +#endif +} + +/* + *-------------------------------------------------------------- + * + * DecodeDCTDCSizeLum -- + * + * Huffman Decoder for dct_dc_size_luminance; location where + * the result of decoding will be placed is passed as argument. + * The decoded values are obtained by doing a table lookup on + * dct_dc_size_luminance. + * + * Results: + * The decoded value for dct_dc_size_luminance or ERROR for + * unbound values will be placed in the location specified. + * + * Side effects: + * Bit stream is irreversibly parsed. + * + *-------------------------------------------------------------- + */ +void +decodeDCTDCSizeLum(unsigned int *value) +{ + unsigned int index; + + show_bits7(index); + + *value = dct_dc_size_luminance[index].value; + + flush_bits(dct_dc_size_luminance[index].num_bits); +} + + + + +/* + *-------------------------------------------------------------- + * + * DecodeDCTDCSizeChrom -- + * + * Huffman Decoder for dct_dc_size_chrominance; location where + * the result of decoding will be placed is passed as argument. + * The decoded values are obtained by doing a table lookup on + * dct_dc_size_chrominance. + * + * Results: + * The decoded value for dct_dc_size_chrominance or ERROR for + * unbound values will be placed in the location specified. + * + * Side effects: + * Bit stream is irreversibly parsed. + * + *-------------------------------------------------------------- + */ +void +decodeDCTDCSizeChrom(unsigned int *value) +{ + unsigned int index; + + show_bits8(index); + + *value = dct_dc_size_chrominance[index].value; + + flush_bits(dct_dc_size_chrominance[index].num_bits); +} + + + +/* + *-------------------------------------------------------------- + * + * decodeDCTCoeff -- + * + * Huffman Decoder for dct_coeff_first and dct_coeff_next; + * locations where the results of decoding: run and level, are to + * be placed and also the type of DCT coefficients, either + * dct_coeff_first or dct_coeff_next, are being passed as argument. + * + * The decoder first examines the next 8 bits in the input stream, + * and perform according to the following cases: + * + * '0000 0000' - examine 8 more bits (i.e. 16 bits total) and + * perform a table lookup on dct_coeff_tbl_0. + * One more bit is then examined to determine the sign + * of level. + * + * '0000 0001' - examine 4 more bits (i.e. 12 bits total) and + * perform a table lookup on dct_coeff_tbl_1. + * One more bit is then examined to determine the sign + * of level. + * + * '0000 0010' - examine 2 more bits (i.e. 10 bits total) and + * perform a table lookup on dct_coeff_tbl_2. + * One more bit is then examined to determine the sign + * of level. + * + * '0000 0011' - examine 2 more bits (i.e. 10 bits total) and + * perform a table lookup on dct_coeff_tbl_3. + * One more bit is then examined to determine the sign + * of level. + * + * otherwise - perform a table lookup on dct_coeff_tbl. If the + * value of run is not ESCAPE, extract one more bit + * to determine the sign of level; otherwise 6 more + * bits will be extracted to obtain the actual value + * of run , and then 8 or 16 bits to get the value of level. + * + * + * + * Results: + * The decoded values of run and level or ERROR for unbound values + * are placed in the locations specified. + * + * Side effects: + * Bit stream is irreversibly parsed. + * + *-------------------------------------------------------------- + */ +static void +decodeDCTCoeff(unsigned short int *dct_coeff_tbl, unsigned int *run, int *level) +{ + unsigned int temp, index /*, num_bits*/; + unsigned int value, next32bits, flushed; + + /* + * Grab the next 32 bits and use it to improve performance of + * getting the bits to parse. Thus, calls are translated as: + * + * show_bitsX <--> next32bits >> (32-X) + * get_bitsX <--> val = next32bits >> (32-flushed-X); + * flushed += X; + * next32bits &= bitMask[flushed]; + * flush_bitsX <--> flushed += X; + * next32bits &= bitMask[flushed]; + * + */ + show_bits32(next32bits); + flushed = 0; + + /* show_bits8(index); */ + index = next32bits >> 24; + + if (index > 3) { + value = dct_coeff_tbl[index]; + *run = (value & RUN_MASK) >> RUN_SHIFT; + if (*run == END_OF_BLOCK) { + *level = END_OF_BLOCK; + } + else { + /* num_bits = (value & NUM_MASK) + 1; */ + /* flush_bits(num_bits); */ + flushed = (value & NUM_MASK) + 1; + next32bits &= bitMask[flushed]; + if (*run != ESCAPE) { + *level = (value & LEVEL_MASK) >> LEVEL_SHIFT; + /* get_bits1(value); */ + /* if (value) *level = -*level; */ + if (next32bits >> (31-flushed)) *level = -*level; + flushed++; + /* next32bits &= bitMask[flushed]; last op before update */ + } + else { /* *run == ESCAPE */ + /* get_bits14(temp); */ + temp = next32bits >> (18-flushed); + flushed += 14; + next32bits &= bitMask[flushed]; + *run = temp >> 8; + temp &= 0xff; + if (temp == 0) { + /* get_bits8(*level); */ + *level = next32bits >> (24-flushed); + flushed += 8; + /* next32bits &= bitMask[flushed]; last op before update */ + assert(*level >= 128); + } else if (temp != 128) { + /* Grab sign bit */ + *level = ((int) (temp << 24)) >> 24; + } else { + /* get_bits8(*level); */ + *level = next32bits >> (24-flushed); + flushed += 8; + /* next32bits &= bitMask[flushed]; last op before update */ + *level = *level - 256; + assert(*level <= -128 && *level >= -255); + } + } + /* Update bitstream... */ + flush_bits(flushed); + } + } + else { + if (index == 2) { + /* show_bits10(index); */ + index = next32bits >> 22; + value = dct_coeff_tbl_2[index & 3]; + } + else if (index == 3) { + /* show_bits10(index); */ + index = next32bits >> 22; + value = dct_coeff_tbl_3[index & 3]; + } + else if (index) { /* index == 1 */ + /* show_bits12(index); */ + index = next32bits >> 20; + value = dct_coeff_tbl_1[index & 15]; + } + else { /* index == 0 */ + /* show_bits16(index); */ + index = next32bits >> 16; + value = dct_coeff_tbl_0[index & 255]; + } + *run = (value & RUN_MASK) >> RUN_SHIFT; + *level = (value & LEVEL_MASK) >> LEVEL_SHIFT; + + /* + * Fold these operations together to make it fast... + */ + /* num_bits = (value & NUM_MASK) + 1; */ + /* flush_bits(num_bits); */ + /* get_bits1(value); */ + /* if (value) *level = -*level; */ + + flushed = (value & NUM_MASK) + 2; + if ((next32bits >> (32-flushed)) & 0x1) *level = -*level; + + /* Update bitstream ... */ + flush_bits(flushed); + } +} + + +/* + *-------------------------------------------------------------- + * + * decodeDCTCoeffFirst -- + * + * Huffman Decoder for dct_coeff_first. Locations for the + * decoded results: run and level, are being passed as + * arguments. Actual work is being done by calling DecodeDCTCoeff, + * with the table dct_coeff_first. + * + * Results: + * The decoded values of run and level for dct_coeff_first or + * ERROR for unbound values are placed in the locations given. + * + * Side effects: + * Bit stream is irreversibly parsed. + * + *-------------------------------------------------------------- + */ +void +decodeDCTCoeffFirst(unsigned int *run, int *level) +{ + decodeDCTCoeff(dct_coeff_first, run, level); +} + + + + +/* + *-------------------------------------------------------------- + * + * decodeDCTCoeffNext -- + * + * Huffman Decoder for dct_coeff_first. Locations for the + * decoded results: run and level, are being passed as + * arguments. Actual work is being done by calling DecodeDCTCoeff, + * with the table dct_coeff_next. + * + * Results: + * The decoded values of run and level for dct_coeff_next or + * ERROR for unbound values are placed in the locations given. + * + * Side effects: + * Bit stream is irreversibly parsed. + * + *-------------------------------------------------------------- + */ +void +decodeDCTCoeffNext(unsigned int *run, int *level) +{ + decodeDCTCoeff(dct_coeff_next, run, level); +} |