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cd8a625d6b3a734a4b69f2bafe509d645586632c
recycled-ni-libstb-hal/libeplayer3/external/flv2mpeg4/src/flvdecoder.c
max_10 8f6c348cd9 rename libeplayer3-arm -> libplayer3 
Origin commit data
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Branch: master
Commit: e1b78787fd
Author: max_10 <max_10@gmx.de>
Date: 2019-06-15 (Sat, 15 Jun 2019)

Origin message was:
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- rename libeplayer3-arm -> libplayer3

------------------
No further description and justification available within origin commit message!

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This commit was generated by Migit
2019-06-15 01:38:25 +02:00

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/*
* FLV Bitstream/VLC Decoder
*
* Copyright (c) 2006 vixy project
*
* This file contains the code that based on FFmpeg (http://ffmpeg.mplayerhq.hu/)
* See original copyright notice in /FFMPEG_CREDITS and /FFMPEG_IMPORTS
*
* This file is part of VIXY FLV Converter.
*
* 'VIXY FLV Converter' is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* 'VIXY FLV Converter' 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#include <stdio.h>
#include "bitreader.h"
#include "flv.h"
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static const uint8 zig_zag_scan[64] =
{
0, 1, 8, 16, 9, 2, 3, 10, 17, 24, 32, 25, 18, 11, 4, 5,
12, 19, 26, 33, 40, 48, 41, 34, 27, 20, 13, 6, 7, 14, 21, 28,
35, 42, 49, 56, 57, 50, 43, 36, 29, 22, 15, 23, 30, 37, 44, 51,
58, 59, 52, 45, 38, 31, 39, 46, 53, 60, 61, 54, 47, 55, 62, 63
};
static const VLCtab vlc_table_intra_MCBPC[] = //: table_size=72 table_allocated=128 bits=6
{
{64, -3},
{5, 6}, {6, 6}, {7, 6}, {4, 4}, {4, 4}, {4, 4}, {4, 4}, {1, 3}, {1, 3}, {1, 3}, {1, 3}, {1, 3},
{1, 3}, {1, 3}, {1, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {3, 3},
{3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {3, 3}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {-1, 0}, {8, 3}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}
};
static const VLCtab vlc_table_inter_MCBPC[] = //table_size=198 table_allocated=256 bits=7
{
{128, -6}, {192, -2}, {196, -1}, {7, 7}, {18, 7}, {17, 7}, {10, 7}, {9, 7}, {12, 6}, {12, 6}, {3, 6}, {3, 6},
{4, 5}, {4, 5}, {4, 5}, {4, 5}, {2, 4}, {2, 4}, {2, 4}, {2, 4}, {2, 4}, {2, 4}, {2, 4}, {2, 4}, {1, 4}, {1, 4},
{1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {16, 3}, {16, 3}, {16, 3}, {16, 3}, {16, 3}, {16, 3}, {16, 3},
{16, 3}, {16, 3}, {16, 3}, {16, 3}, {16, 3}, {16, 3}, {16, 3}, {16, 3}, {16, 3}, {8, 3}, {8, 3}, {8, 3}, {8, 3},
{8, 3}, {8, 3}, {8, 3}, {8, 3}, {8, 3}, {8, 3}, {8, 3}, {8, 3}, {8, 3}, {8, 3}, {8, 3}, {8, 3}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0}, {-1, 0},
{-1, 0}, {24, 4}, {24, 4}, {24, 4}, {24, 4}, {25, 6}, {-1, 0}, {26, 6}, {27, 6}, {20, 2}, {20, 2}, {20, 2},
{20, 2}, {20, 2}, {20, 2}, {20, 2}, {20, 2}, {20, 2}, {20, 2}, {20, 2}, {20, 2}, {20, 2}, {20, 2}, {20, 2},
{20, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2},
{15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {14, 2}, {14, 2}, {14, 2}, {14, 2}, {14, 2}, {14, 2}, {14, 2},
{14, 2}, {14, 2}, {14, 2}, {14, 2}, {14, 2}, {14, 2}, {14, 2}, {14, 2}, {14, 2}, {13, 2}, {11, 2}, {6, 1},
{6, 1}, {5, 1}, {19, 1},
};
static const VLCtab vlc_table_cbpy[] = //table_size=64 table_allocated=64 bits=6
{
{-1, 0}, {-1, 0}, {6, 6}, {9, 6}, {8, 5}, {8, 5}, {4, 5}, {4, 5}, {2, 5}, {2, 5}, {1, 5}, {1, 5}, {0, 4}, {0, 4},
{0, 4}, {0, 4}, {12, 4}, {12, 4}, {12, 4}, {12, 4}, {10, 4}, {10, 4}, {10, 4}, {10, 4}, {14, 4}, {14, 4},
{14, 4}, {14, 4}, {5, 4}, {5, 4}, {5, 4}, {5, 4}, {13, 4}, {13, 4}, {13, 4}, {13, 4}, {3, 4}, {3, 4}, {3, 4},
{3, 4}, {11, 4}, {11, 4}, {11, 4}, {11, 4}, {7, 4}, {7, 4}, {7, 4}, {7, 4}, {15, 2}, {15, 2}, {15, 2}, {15, 2},
{15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}, {15, 2}
};
static const VLCtab vlc_table_rl_inter[] = //: table_size=554 table_allocated=1024 bits=9
{
{-1, 0}, {512, -2}, {516, -1}, {518, -1}, {520, -1}, {522, -1}, {524, -1}, {526, -1}, {528, -2}, {532, -2},
{536, -3}, {544, -3}, {102, 7}, {102, 7}, {102, 7}, {102, 7}, {552, -1}, {85, 9}, {84, 9}, {83, 9}, {82, 9},
{81, 9}, {80, 9}, {79, 9}, {78, 9}, {59, 9}, {53, 9}, {52, 9}, {51, 9}, {50, 9}, {49, 9}, {48, 9}, {47, 9},
{46, 9}, {26, 9}, {23, 9}, {6, 9}, {5, 9}, {77, 8}, {77, 8}, {76, 8}, {76, 8}, {75, 8}, {75, 8}, {74, 8},
{74, 8}, {73, 8}, {73, 8}, {72, 8}, {72, 8}, {71, 8}, {71, 8}, {70, 8}, {70, 8}, {45, 8}, {45, 8}, {44, 8},
{44, 8}, {19, 8}, {19, 8}, {14, 8}, {14, 8}, {4, 8}, {4, 8}, {69, 7}, {69, 7}, {69, 7}, {69, 7}, {68, 7},
{68, 7}, {68, 7}, {68, 7}, {67, 7}, {67, 7}, {67, 7}, {67, 7}, {66, 7}, {66, 7}, {66, 7}, {66, 7}, {43, 7},
{43, 7}, {43, 7}, {43, 7}, {42, 7}, {42, 7}, {42, 7}, {42, 7}, {40, 7}, {40, 7}, {40, 7}, {40, 7}, {3, 7},
{3, 7}, {3, 7}, {3, 7}, {65, 6}, {65, 6}, {65, 6}, {65, 6}, {65, 6}, {65, 6}, {65, 6}, {65, 6}, {64, 6}, {64, 6},
{64, 6}, {64, 6}, {64, 6}, {64, 6}, {64, 6}, {64, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6}, {63, 6},
{63, 6}, {63, 6}, {61, 6}, {61, 6}, {61, 6}, {61, 6}, {61, 6}, {61, 6}, {61, 6}, {61, 6}, {38, 6}, {38, 6},
{38, 6}, {38, 6}, {38, 6}, {38, 6}, {38, 6}, {38, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6}, {36, 6},
{36, 6}, {36, 6}, {34, 6}, {34, 6}, {34, 6}, {34, 6}, {34, 6}, {34, 6}, {34, 6}, {34, 6}, {31, 6}, {31, 6},
{31, 6}, {31, 6}, {31, 6}, {31, 6}, {31, 6}, {31, 6}, {13, 6}, {13, 6}, {13, 6}, {13, 6}, {13, 6}, {13, 6},
{13, 6}, {13, 6}, {2, 6}, {2, 6}, {2, 6}, {2, 6}, {2, 6}, {2, 6}, {2, 6}, {2, 6}, {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}, {25, 5}, {25, 5}, {25, 5}, {25, 5}, {25, 5}, {25, 5}, {25, 5}, {25, 5}, {25, 5}, {25, 5}, {25, 5},
{25, 5}, {25, 5}, {25, 5}, {25, 5}, {25, 5}, {22, 5}, {22, 5}, {22, 5}, {22, 5}, {22, 5}, {22, 5}, {22, 5},
{22, 5}, {22, 5}, {22, 5}, {22, 5}, {22, 5}, {22, 5}, {22, 5}, {22, 5}, {22, 5}, {58, 4}, {58, 4}, {58, 4},
{58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4},
{58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4},
{58, 4}, {58, 4}, {58, 4}, {58, 4}, {58, 4}, {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},
{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}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3},
{12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3},
{12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3},
{12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3},
{12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3},
{12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {12, 3}, {18, 4},
{18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4},
{18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4},
{18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {18, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4},
{1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4},
{1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {1, 4}, {62, 2}, {60, 2},
{10, 2}, {9, 2}, {89, 1}, {88, 1}, {87, 1}, {86, 1}, {39, 1}, {37, 1}, {35, 1}, {32, 1}, {29, 1}, {24, 1},
{20, 1}, {15, 1}, {11, 2}, {16, 2}, {54, 2}, {55, 2}, {90, 2}, {91, 2}, {92, 2}, {93, 2}, {17, 3}, {21, 3},
{27, 3}, {30, 3}, {33, 3}, {41, 3}, {56, 3}, {57, 3}, {94, 3}, {95, 3}, {96, 3}, {97, 3}, {98, 3}, {99, 3},
{100, 3}, {101, 3}, {8, 1}, {7, 1}
};
static const VLCtab vlc_table_mv[] = //mv_vlc: table_size=538 table_allocated=1024 bits=9
{
{512, -3}, {520, -2}, {524, -1}, {526, -1}, {528, -1}, {530, -1}, {532, -1}, {534, -1}, {536, -1}, {10, 9},
{9, 9}, {8, 9}, {7, 7}, {7, 7}, {7, 7}, {7, 7}, {6, 7}, {6, 7}, {6, 7}, {6, 7}, {5, 7}, {5, 7}, {5, 7}, {5, 7},
{4, 6}, {4, 6}, {4, 6}, {4, 6}, {4, 6}, {4, 6}, {4, 6}, {4, 6}, {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, 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}, {2, 3}, {2, 3},
{2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3},
{2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3},
{2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3},
{2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3},
{2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {2, 3}, {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},
{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}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1},
{0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {0, 1}, {-1, 0}, {-1, 0},
{32, 3}, {31, 3}, {30, 2}, {30, 2}, {29, 2}, {29, 2}, {28, 2}, {27, 2}, {26, 2}, {25, 2}, {24, 1}, {23, 1}, {22, 1},
{21, 1}, {20, 1}, {19, 1}, {18, 1}, {17, 1}, {16, 1}, {15, 1}, {14, 1}, {13, 1}, {12, 1}, {11, 1},
};
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static int __inline decode_DC(BR *p)
{
int level = get_bits(p, 8);
if ((level & 0x7f) == 0)
{
printf("illigal dc\n");
return -1;
}
if (level == 255) level = 128;
// printf("DC: %d\n", level);
return level;
}
static int __inline decode_AC(BR *p, BLOCK *block, int escape_type, int i)
{
int code, run, level, last, sign;
while (1)
{
code = get_vlc(p, vlc_table_rl_inter, 9, 2);
if (code < 0)
{
printf("invalid Huffman code in getblock()\n");
return -1;
}
if (code == rl_inter_n)
{
//escape
if (escape_type == 1)
{
int is11bit = get_bits(p, 1);
last = get_bits(p, 1);
run = get_bits(p, 6);
if (is11bit)
{
level = get_sbits(p, 11);
}
else
{
level = get_sbits(p, 7);
}
}
else
{
last = get_bits(p, 1);
run = get_bits(p, 6);
level = get_bits(p, 8);
sign = level >= 128;
if (sign) level = 256 - level;
}
}
else
{
run = rl_inter_run[code];
level = rl_inter_level[code];
last = code >= rl_inter_last;
sign = get_bits(p, 1);
if (sign) level = -level;
}
i += run;
if (i >= 64)
{
printf("run overflow..\n");
return -1;
}
block->block[zig_zag_scan[i]] = level;
if (last) break;
i++;
}
block->last_index = i;
return 0;
}
static int __inline decode_intra_block(BR *p, BLOCK *block, int escape_type, int coded)
{
int level = decode_DC(p);
if (level < 0)
{
printf("dc error.\n");
return -1;
}
block->block[0] = level;
block->last_index = 0;
if (!coded)
{
return 0;
}
if (decode_AC(p, block, escape_type, 1) < 0) return -1;
return 0;
}
static int __inline decode_inter_block(BR *p, BLOCK *block, int escape_type, int coded)
{
block->last_index = -1;
if (!coded)
{
return 0;
}
if (decode_AC(p, block, escape_type, 0) < 0) return -1;
return 0;
}
static int __inline get_intra_MCBPC(BR *br)
{
int cbpc;
do
{
cbpc = get_vlc(br, vlc_table_intra_MCBPC, 6, 2);
if (cbpc < 0) return -1;
}
while (cbpc == 8);
return cbpc;
}
static int __inline get_inter_MCBPC(BR *br)
{
int cbpc;
do
{
if (get_bits(br, 1))
{
return -2;
}
cbpc = get_vlc(br, vlc_table_inter_MCBPC, 7, 2);
if (cbpc < 0) return -1;
}
while (cbpc == 20);
return cbpc;
}
static int __inline get_cbpy(BR *br)
{
return get_vlc(br, vlc_table_cbpy, 6, 1);
}
static int __inline decode_dquant(BR *p)
{
static const int table[4] = { -1, -2, 1, 2 };
return table[get_bits(p, 2)];
}
static int __inline decode_motion(BR *br, VLCDEC *vlcdec)
{
int tmp;
int code = get_vlcdec(br, vlc_table_mv, 9, 2, vlcdec);
vlcdec->bits_ex = 0;
if (code == 0)
return 0;
if (code < 0)
return -1;
tmp = get_bits(br, 1);
/*
vlcdec->value |= (tmp << vlcdec->bits);
/// vlcdec->value <<= 1;
// vlcdec->value |= tmp;
vlcdec->bits++;
// vlcdec->value |= (tmp << vlcdec->bits);
*/
vlcdec->bits_ex = 1;
vlcdec->value_ex = tmp;
return 0;
}
static int __inline decode_intra_mb_internal(BR *p, MICROBLOCK *mb, int escape_type, int qscale, int cbpc, int dquant)
{
int cbpy, cbp;
int i;
cbpy = get_cbpy(p);
if (cbpy < 0)
{
printf("cbpy error\n");
return -1;
}
cbp = (cbpc & 3) | (cbpy << 2);
if (dquant)
{
mb->dquant = decode_dquant(p);
qscale += mb->dquant;
}
for (i = 0; i < 6; i++)
{
if (decode_intra_block(p, &mb->block[i], escape_type, cbp & 32) != 0) return -1;
cbp += cbp;
}
return 0;
}
static int __inline decode_inter_mb_internal(BR *p, MICROBLOCK *mb, int escape_type, int qscale, int cbpc, int dquant)
{
int cbpy, cbp;
int i;
cbpy = get_cbpy(p);
if (cbpy < 0)
{
printf("cbpy error\n");
return -1;
}
cbpy ^= 0xF;
cbp = (cbpc & 3) | (cbpy << 2);
if (dquant)
{
mb->dquant = decode_dquant(p);
qscale += mb->dquant;
}
if ((cbpc & 16) == 0)
{
// 16x16 motion prediction
decode_motion(p, &mb->mv_x[0]);
decode_motion(p, &mb->mv_y[0]);
mb->mv_type = MV_TYPE_16X16;
}
else
{
// 8x8 motion prediction
for (i = 0; i < 4; i++)
{
decode_motion(p, &mb->mv_x[i]);
decode_motion(p, &mb->mv_y[i]);
}
mb->mv_type = MV_TYPE_8X8;
}
for (i = 0; i < 6; i++)
{
if (decode_inter_block(p, &mb->block[i], escape_type, cbp & 32) != 0) return -1;
cbp += cbp;
}
return 0;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////
int decode_I_mb(BR *p, MICROBLOCK *mb, int escape_type, int qscale)
{
int dquant;
int cbpc = get_intra_MCBPC(p);
if (cbpc < 0)
{
printf("intra_MCBPC error\n");
return -1;
}
dquant = cbpc & 4;
decode_intra_mb_internal(p, mb, escape_type, qscale, cbpc, dquant);
if (show_bits(p, 16) == 0)
{
// printf("slice end???\n");
}
return 0;
}
int decode_P_mb(BR *p, MICROBLOCK *mb, int escape_type, int qscale)
{
int cbpc = get_inter_MCBPC(p);
if (cbpc == -1)
{
printf("inter_MCBPC error\n");
return -1;
}
if (cbpc == -2)
{
mb->skip = 1;
}
else if (cbpc >= 0)
{
int dquant = cbpc & 8;
mb->skip = 0;
if ((cbpc & 4) != 0)
{
mb->intra = 1;
decode_intra_mb_internal(p, mb, escape_type, qscale, cbpc, dquant);
}
else
{
mb->intra = 0;
decode_inter_mb_internal(p, mb, escape_type, qscale, cbpc, dquant);
}
}
if (show_bits(p, 16) == 0)
{
// printf("slice end???\n");
}
return 0;
}
int decode_picture_header(BR *p, PICTURE *picture)
{
int tmp, width = 0, height = 0;
if (get_bits(p, 17) != 1)
{
fprintf(stderr, "start code error\n");
return -1;
}
tmp = get_bits(p, 5);
if (tmp != 0 && tmp != 1)
{
fprintf(stderr, "picture format error\n");
return -1;
}
picture->escape_type = tmp;
picture->frame_number = get_bits(p, 8);
// printf("picture_format: %d\n", tmp);
// printf("picture_number: %d\n", get_bits(p, 8));
tmp = get_bits(p, 3);
switch (tmp)
{
case 0:
width = get_bits(p, 8);
height = get_bits(p, 8);
break;
case 1:
width = get_bits(p, 16);
height = get_bits(p, 16);
break;
case 2:
width = 352, height = 288;
break;
case 3:
width = 176, height = 144;
break;
case 4:
width = 128, height = 96;
break;
case 5:
width = 320, height = 240;
break;
case 6:
width = 160, height = 120;
break;
default:
fprintf(stderr, "size error\n");
return -1;
}
picture->width = width;
picture->height = height;
// printf("width: %d height: %d\n", width, height);
picture->picture_type = get_bits(p, 2);
// printf("picture_type: %d\n", tmp);
tmp = get_bits(p, 1);
// printf("deblocking flag: %d\n", tmp);
tmp = get_bits(p, 5);
picture->qscale = tmp;
// printf("qscale: %d\n", tmp);
// PEI
while (get_bits(p, 1) != 0)
{
flash_bits(p, 8);
}
// dump_marker(0, "dd header end");
return 0;
}
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