1 /*************************************************************************** 2 * Video decoder for the W996[87]CF driver for Linux. * 3 * * 4 * Copyright (C) 2003 by Luca Risolia <luca.risolia@studio.unibo.it> * 5 * * 6 * This program is free software; you can redistribute it and/or modify * 7 * it under the terms of the GNU General Public License as published by * 8 * the Free Software Foundation; either version 2 of the License, or * 9 * (at your option) any later version. * 10 * * 11 * This program is distributed in the hope that it will be useful, * 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of * 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * 14 * GNU General Public License for more details. * 15 * * 16 * You should have received a copy of the GNU General Public License * 17 * along with this program; if not, write to the Free Software * 18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * 19 ***************************************************************************/ 20 21 #ifndef _W9968CF_DECODER_H_ 22 #define _W9968CF_DECODER_H_ 23 24 /* Comment/uncomment this for high/low quality of compressed video */ 25 #define W9968CF_DEC_FAST_LOWQUALITY_VIDEO 26 27 #ifdef W9968CF_DEC_FAST_LOWQUALITY_VIDEO 28 static const unsigned char Y_QUANTABLE[64] = { 29 16, 11, 10, 16, 24, 40, 51, 61, 30 12, 12, 14, 19, 26, 58, 60, 55, 31 14, 13, 16, 24, 40, 57, 69, 56, 32 14, 17, 22, 29, 51, 87, 80, 62, 33 18, 22, 37, 56, 68, 109, 103, 77, 34 24, 35, 55, 64, 81, 104, 113, 92, 35 49, 64, 78, 87, 103, 121, 120, 101, 36 72, 92, 95, 98, 112, 100, 103, 99 37 }; 38 39 static const unsigned char UV_QUANTABLE[64] = { 40 17, 18, 24, 47, 99, 99, 99, 99, 41 18, 21, 26, 66, 99, 99, 99, 99, 42 24, 26, 56, 99, 99, 99, 99, 99, 43 47, 66, 99, 99, 99, 99, 99, 99, 44 99, 99, 99, 99, 99, 99, 99, 99, 45 99, 99, 99, 99, 99, 99, 99, 99, 46 99, 99, 99, 99, 99, 99, 99, 99, 47 99, 99, 99, 99, 99, 99, 99, 99 48 }; 49 #else 50 static const unsigned char Y_QUANTABLE[64] = { 51 8, 5, 5, 8, 12, 20, 25, 30, 52 6, 6, 7, 9, 13, 29, 30, 27, 53 7, 6, 8, 12, 20, 28, 34, 28, 54 7, 8, 11, 14, 25, 43, 40, 31, 55 9, 11, 18, 28, 34, 54, 51, 38, 56 12, 17, 27, 32, 40, 52, 56, 46, 57 24, 32, 39, 43, 51, 60, 60, 50, 58 36, 46, 47, 49, 56, 50, 51, 49 59 }; 60 61 static const unsigned char UV_QUANTABLE[64] = { 62 8, 9, 12, 23, 49, 49, 49, 49, 63 9, 10, 13, 33, 49, 49, 49, 49, 64 12, 13, 28, 49, 49, 49, 49, 49, 65 23, 33, 49, 49, 49, 49, 49, 49, 66 49, 49, 49, 49, 49, 49, 49, 49, 67 49, 49, 49, 49, 49, 49, 49, 49, 68 49, 49, 49, 49, 49, 49, 49, 49, 69 49, 49, 49, 49, 49, 49, 49, 49 70 }; 71 #endif 72 73 #define W9968CF_DEC_ERR_CORRUPTED_DATA -1 74 #define W9968CF_DEC_ERR_BUF_OVERFLOW -2 75 #define W9968CF_DEC_ERR_NO_SOI -3 76 #define W9968CF_DEC_ERR_NO_SOF0 -4 77 #define W9968CF_DEC_ERR_NO_SOS -5 78 #define W9968CF_DEC_ERR_NO_EOI -6 79 80 extern void w9968cf_init_decoder(void); 81 extern int w9968cf_check_headers(const unsigned char* Pin, 82 const unsigned long BUF_SIZE); 83 extern int w9968cf_decode(const char* Pin, const unsigned long BUF_SIZE, 84 const unsigned W, const unsigned H, char* Pout); 85 86 #endif /* _W9968CF_DECODER_H_ */ 87