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/*
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* Copyright (C) 2000, 2001 Martin Norb<72>k, H<>an Hjort
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*
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* This file is part of libdvdnav, a DVD navigation library. It is modified
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* from a file originally part of the Ogle DVD player.
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*
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* libdvdnav is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* libdvdnav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* $Id: decoder.h,v 1.9 2004/03/16 11:43:38 mroi Exp $
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*
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*/
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#ifndef DECODER_H_INCLUDED
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#define DECODER_H_INCLUDED
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#include "common.h"
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#include <sys/time.h>
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/* vm_cmd_t */
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#include "dvdnav_internal.h"
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/* link command types */
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typedef enum {
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LinkNoLink = 0,
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LinkTopC = 1,
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LinkNextC = 2,
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LinkPrevC = 3,
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LinkTopPG = 5,
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LinkNextPG = 6,
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LinkPrevPG = 7,
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LinkTopPGC = 9,
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LinkNextPGC = 10,
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LinkPrevPGC = 11,
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LinkGoUpPGC = 12,
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LinkTailPGC = 13,
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LinkRSM = 16,
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LinkPGCN,
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LinkPTTN,
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LinkPGN,
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LinkCN,
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Exit,
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JumpTT, /* 22 */
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JumpVTS_TT,
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JumpVTS_PTT,
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JumpSS_FP,
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JumpSS_VMGM_MENU,
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JumpSS_VTSM,
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JumpSS_VMGM_PGC,
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CallSS_FP, /* 29 */
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CallSS_VMGM_MENU,
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CallSS_VTSM,
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CallSS_VMGM_PGC,
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PlayThis
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} link_cmd_t;
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/* a link's data set */
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typedef struct {
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link_cmd_t command;
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uint16_t data1;
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uint16_t data2;
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uint16_t data3;
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} link_t;
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/* the VM registers */
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typedef struct {
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uint16_t SPRM[24];
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uint16_t GPRM[16];
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uint8_t GPRM_mode[16]; /* Need to have some thing to indicate normal/counter mode for every GPRM */
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struct timeval GPRM_time[16]; /* For counter mode */
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} registers_t;
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/* a VM command data set */
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typedef struct {
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uint64_t instruction;
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uint64_t examined;
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registers_t *registers;
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} command_t;
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/* the big VM function, executing the given commands and writing
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* the link where to continue, the return value indicates if a jump
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* has been performed */
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int32_t vmEval_CMD(vm_cmd_t commands[], int32_t num_commands,
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registers_t *registers, link_t *return_values);
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/* extracts some bits from the command */
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uint32_t vm_getbits(command_t* command, int32_t start, int32_t count);
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#ifdef TRACE
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/* for debugging: prints a link in readable form */
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void vm_print_link(link_t value);
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/* for debugging: dumps VM registers */
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void vm_print_registers( registers_t *registers );
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#endif
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#endif /* DECODER_H_INCLUDED */
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