w9968cf_decoder.h

优龙2410linux2.6.8内核源代码

/***************************************************************************
 * Video decoder for the W996[87]CF driver for Linux.                      *
 *                                                                         *
 * Copyright (C) 2003 2004 by Luca Risolia <[e-mail]>  *
 *                                                                         *
 * This program is free software; you can redistribute it and/or modify    *
 * it under the terms of the GNU General Public License as published by    *
 * the Free Software Foundation; either version 2 of the License, or       *
 * (at your option) any later version.                                     *
 *                                                                         *
 * This program 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 General Public License for more details.                            *
 *                                                                         *
 * You should have received a copy of the GNU General Public License       *
 * along with this program; if not, write to the Free Software             *
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.               *
 ***************************************************************************/

#ifndef _W9968CF_DECODER_H_
#define _W9968CF_DECODER_H_

/* Comment/uncomment this for high/low quality of compressed video */
#define W9968CF_DEC_FAST_LOWQUALITY_VIDEO

#ifdef W9968CF_DEC_FAST_LOWQUALITY_VIDEO
static const unsigned char Y_QUANTABLE[64] = {
	16,  11,  10,  16,  24,  40,  51,  61,
	12,  12,  14,  19,  26,  58,  60,  55,
	14,  13,  16,  24,  40,  57,  69,  56,
	14,  17,  22,  29,  51,  87,  80,  62,
	18,  22,  37,  56,  68, 109, 103,  77,
	24,  35,  55,  64,  81, 104, 113,  92,
	49,  64,  78,  87, 103, 121, 120, 101,
	72,  92,  95,  98, 112, 100, 103,  99
};

static const unsigned char UV_QUANTABLE[64] = {
	17,  18,  24,  47,  99,  99,  99,  99,
	18,  21,  26,  66,  99,  99,  99,  99,
	24,  26,  56,  99,  99,  99,  99,  99,
	47,  66,  99,  99,  99,  99,  99,  99,
	99,  99,  99,  99,  99,  99,  99,  99,
	99,  99,  99,  99,  99,  99,  99,  99,
	99,  99,  99,  99,  99,  99,  99,  99,
	99,  99,  99,  99,  99,  99,  99,  99
};
#else
static const unsigned char Y_QUANTABLE[64] = {
	 8,   5,   5,   8,  12,  20,  25,  30,
	 6,   6,   7,   9,  13,  29,  30,  27,
	 7,   6,   8,  12,  20,  28,  34,  28,
	 7,   8,  11,  14,  25,  43,  40,  31,
	 9,  11,  18,  28,  34,  54,  51,  38,
	12,  17,  27,  32,  40,  52,  56,  46,
	24,  32,  39,  43,  51,  60,  60,  50,
	36,  46,  47,  49,  56,  50,  51,  49
};

static const unsigned char UV_QUANTABLE[64] = {
	 8,   9,  12,  23,  49,  49,  49,  49,
	 9,  10,  13,  33,  49,  49,  49,  49,
	12,  13,  28,  49,  49,  49,  49,  49,
	23,  33,  49,  49,  49,  49,  49,  49,
	49,  49,  49,  49,  49,  49,  49,  49,
	49,  49,  49,  49,  49,  49,  49,  49,
	49,  49,  49,  49,  49,  49,  49,  49,
	49,  49,  49,  49,  49,  49,  49,  49
};
#endif

#define W9968CF_DEC_ERR_CORRUPTED_DATA  -1
#define W9968CF_DEC_ERR_BUF_OVERFLOW    -2
#define W9968CF_DEC_ERR_NO_SOI          -3
#define W9968CF_DEC_ERR_NO_SOF0         -4
#define W9968CF_DEC_ERR_NO_SOS          -5
#define W9968CF_DEC_ERR_NO_EOI          -6

extern void w9968cf_init_decoder(void);
extern int w9968cf_check_headers(const unsigned char* Pin, 
                                 const unsigned long BUF_SIZE);
extern int w9968cf_decode(const char* Pin, const unsigned long BUF_SIZE, 
                          const unsigned W, const unsigned H, char* Pout);

#endif /* _W9968CF_DECODER_H_ */