drivers/media/video/w9968cf_decoder.h

   1 /***************************************************************************
   2  * Video decoder for the W996[87]CF driver for Linux.                      *
   3  *                                                                         *
   4  * Copyright (C) 2003 2004 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_ */