📄 dvd_cmd.c
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#if DBG_ON(DBG_TRACE)
DbgPrint(("set_system_cmd() - case SET_NVTMR\n"));
#endif
tt_pgcn = (USHORT) (operand[2] & 0x7F) << 8;
tt_pgcn |= operand[3];
set_sprm(SPRM_TT_PGCN_NV_TMR, tt_pgcn);
if (set_i_flg)
{
/* set SPRM(9) = NV_TMR value */
nv_tmr = (USHORT) operand[0] << 8;
nv_tmr |= operand[1];
}
else
{
gprmn = operand[1] & 0x0F;
nv_tmr = get_gprm(gprmn);
}
if (nv_tmr == 0)
{
stop_nv_tmr();
}
nv_tmr_100 = nv_tmr * 100;
nv_tmr_set = nv_tmr;
adjust_nv_tmr = 1;
set_sprm(SPRM_NV_TMR, nv_tmr);
}
break;
case SET_GPRMMD:
{
/*
* This instruction sets the value to the General Parameter and
* the operation mode of the same General Parameter to Register
* mode or Counter mode.
*/
USHORT initial_value;
UBYTE mode;
UBYTE gprmn_mode;
UBYTE gprmn_init;
#if DBG_ON(DBG_TRACE)
DbgPrint(("set_system_cmd() - case SET_GPRMMD\n"));
#endif
mode = operand[3] >> 7;
gprmn_mode = operand[3] & 0x0F;
if (set_i_flg) /* immediate value loaded into GPRMN */
{
initial_value = (USHORT) operand[0] << 8;
initial_value |= operand[1];
set_gprm(gprmn_mode, mode, initial_value);
}
else /* assign one GPRM to another, and set the mode */
{
gprmn_init = operand[1] & 0x0F;
initial_value = get_gprm(gprmn_init);
set_gprm(gprmn_mode, mode, initial_value);
}
if (mode == GPRM_REG_MODE)
{
; /* Register mode */
}
else
{
; /* Counter mode */
}
}
break;
case SET_AMXMD:
{
USHORT amxmd;
UBYTE gprmn;
#if DBG_ON(DBG_TRACE)
DbgPrint(("set_system_cmd() - case SET_AMXMD\n"));
#endif
/*
* This instruction sets the audio mixing mode for Karaoke audio
* in SPRM(11), but we will just ignore it.
*/
if (set_i_flg)
{
amxmd = ((USHORT) operand[0]) << 8;
amxmd |= operand[1];
set_sprm(SPRM_P_AMXMD, amxmd);
}
else
{
gprmn = operand[3] & 0x0F;
amxmd = (get_gprm(gprmn) & 0x1c1c);
set_sprm(SPRM_P_AMXMD, amxmd);
}
}
break;
case SET_HL_BTNN:
{
UBYTE hl_btnn;
USHORT btnn;
#if DBG_ON(DBG_TRACE)
DbgPrint(("set_system_cmd() - case SET_HL_BTNN\n"));
#endif
/* This instruction sets the HL_BTNN in SPRM(8). */
if (set_i_flg)
{
/* set SPRM(8)[15..10] to value */
hl_btnn = operand[2] >> 2;
set_hl_btnn_sprm(hl_btnn);
}
else
{
btnn = get_gprm((UBYTE)(operand[3] & 0x0F));
/* check any invalid highlight button number */
if ((btnn < 0x0400) || (btnn > 0x9000))
{
btnn = 0x0400;
}
set_sprm(SPRM_HL_BTNN, btnn);
}
}
break;
default:
DbgPrint(("UNKNOWN set_sys_opt=%d, %s, %d\n", set_sys_opt, __FILE__, __LINE__));
break;
}
return (param_changed);
}
/**
* Name: link_sins_cmd
*
* Description: act on the Link Sub-Instruction Command (Type 1)
*
* Arguments: operand - pointer to a two byte operand buffer
*
* Returns: nothing
*
* Functionality:
* These Instructions may not be used in Commands in the Pre- and Post-
* Command Areas of PGCIs, except RSM Instruction.
* This is the Instruction to start the presentation from a position
* specified by the Sub-Instruction and optionally to assign the HL_BTNN
* to SPRM(8). The position which is specified by the Link Sub-Instruction
* shall be within the same Domain (except RSM Instruction).
*/
USHORT link_sins_cmd(UBYTE * operand)
{
UBYTE done = 0;
USHORT retval;
ULONG tt;
ULONG ptt;
#if DBG_ON(DBG_TRACE)
DbgPrint(("link_sins_cmd: ENTER\n"));
#endif
switch (operand[5])
{
case SINS_LINK_NO_LINK:
/*
* No Link is the instruction to set the HL_BTTN to SPRM(8)
* without a new position.
*/
retval = NAV_CONTINUE; /*NAV_CELL_PLAY;*/
break;
case SINS_LINK_TOP_C:
/*
* Skip to the top of the current Cell is the instruction to
* restart the presentation of the current Cell and to set
* HL_BTNN to SPRM(8).
*/
retval = NAV_CELL_PLAY;
break;
case SINS_LINK_NEXT_C:
/*
* Skip to the next Cell is the instruction to start the presentation
* of the next Cell (or Cell Block) relative to the current Cell (or
* Cell Block), and optionally to assign the HL_BTNN to SPRM(8).
*/
/*
* increment cell number by one, if this is the last cell of the
* program, ignore this command, otherwise, go to head of the next
* cell according to cell playback information table
*/
if (next_pgn == (pgc_gi.pgc_cnt[2] & 0x7f))
{
if (next_cell++ == pgc_gi.pgc_cnt[3])
{
next_cell--;
}
}
else
{
if (next_cell++ == pgc_pgmap[next_pgn])
{
next_cell--;
}
}
retval = NAV_CELL_PLAY;
break;
case SINS_LINK_PREV_C:
/*
* Skip to the previous Cell is the instruction to start the
* presentation of the previous Cell (or Cell Block) relative to
* the current Cell (or Cell Block), and optionally to assign the
* HL_BTNN to SPRM(8).
*/
/*
* decrement cell number by one, if this is the first cell of the
* program, ignore this command, otherwise, go to head of the
* previous cellaccording to cell playback information table
*/
if (next_pgn == (pgc_gi.pgc_cnt[2] & 0x7f))
{
if (--next_cell == 0)
{
next_cell++;
}
}
else
{
if (next_pgn != 1)
{
if (--next_cell == pgc_pgmap[next_pgn - 2])
{
next_cell++;
}
}
else
{
next_cell--;
}
}
retval = NAV_CELL_PLAY;
break;
case SINS_LINK_TOP_PG:
/*
* Skip to the top of the current Program is the instruction to
* restart the presentation of the current Program, and
* optionally to assign the HL_BTNN to SPRM(8).
*/
retval = link_top_pg();
break;
case SINS_LINK_NEXT_PG:
/*
* Skip to the next Program is the instruction to start the
* presentation of the next Program of the current PGC and
* optionally to assign the HL_BTNN to SPRM(8).
*/
retval = link_next_pg();
break;
case SINS_LINK_PREV_PG:
/*
* Skip to the previous Program is the instruction to start the
* presentation of the previous Program of the current PGC and
* optionally to assign the HL_BTNN to SPRM(8). When this
* instruction is executed in the first Program of the PGC or the
* Program of the PGC whose PG Playback mode is set to Random or
* Shuffle playback, this instruction shall be interpreted as
* LinkPrevPGC (SINS_LINK_PREV_PGC) Instruction.
*/
retval = link_prev_pg();
break;
case SINS_LINK_TOP_PGC:
/*
* Link to the current PGC is the instruction to restart the
* presentation of the current PGC (or PGC Block) and optionally
* to assign the HL_BTNN to SPRM(8).
*/
next_pgn = 1; /* presents from the 1st program in PGC */
next_cell = pgc_pgmap[0];
retval = NAV_PRE_CMD; /* goto pre_cmd phase */
break;
case SINS_LINK_NEXT_PGC:
/*
* Link to the next PGC is the instruction to start the
* presentation of the next PGC (or PGC Block) relative to the
* current PGC and optionally to assign the HL_BTNN to SPRM(8).
*/
retval = NAV_PRE_CMD; /* goto pre_cmd phase */
if (pgc_gi.pgc_nv_ctl.next_pgcn & 0x7fff)
{
next_pgcn = pgc_gi.pgc_nv_ctl.next_pgcn & 0x7fff;
if (parse_pgci(&next_pgcn))
{
retval = NAV_STOP; /* goto stop phase */
}
else
{
next_pgn = 1; /* presents from the 1st program in PGC */
if (pgc_domain == TT_PGC)
{
set_sprm(SPRM_TT_PGCN_TT_DOM, (USHORT) next_pgcn);
done = 0;
for (tt = 0; (tt < ptt_srpti.vts_ttu_n) && !done; tt++)
{
for (ptt = 0; (ptt < ttu_srp_num[tt]) && !done; ptt++)
{
if ((ptt_srp[tt][ptt].pgcn == next_pgcn) &&
(ptt_srp[tt][ptt].pgn == next_pgn))
{
set_sprm(SPRM_PTTN_ONE_SEQ_PGC, (USHORT) (ptt + 1));
/* time_info->chapter_valid = TRUE;*/
done = 1;
}
}
}
#if CHAP_DISP_MODE == CHAP_DISP_1
if ((tt_srp[get_sprm(SPRM_TTN_TT_DOM) - 1].tt_pb_ty & 0x40) && /* One_Random_PGC_Title or Multi_PGC_Title */
(tt_srp[get_sprm(SPRM_TTN_TT_DOM) - 1].tt_pb_ty & 0x02)) /* ptt search is prohibited */
#else
if (tt_srp[get_sprm(SPRM_TTN_TT_DOM) - 1].tt_pb_ty & 0x40) /* One_Random_PGC_Title or Multi_PGC_Title */
#endif
{
time_info->chapter_valid = FALSE;
}
else
{
time_info->chapter_valid = TRUE;
}
if (!done)
{
time_info->chapter_valid = FALSE;
}
}
next_cell = pgc_pgmap[0];
}
}
else
{
/* go to stop state */
retval = NAV_STOP;
}
break;
case SINS_LINK_PREV_PGC:
/*
* Link to the previous PGC is the instruction to start the
* presentation of the previous PGC (or PGC Block) relative to
* the current PGC and optionally to assign the HL_BTNN to
* SPRM(8).
*/
retval = NAV_PRE_CMD; /* goto pre_cmd phase */
if (pgc_gi.pgc_nv_ctl.previous_pgcn & 0x7fff)
{
next_pgcn = pgc_gi.pgc_nv_ctl.previous_pgcn & 0x7fff;
if (parse_pgci(&next_pgcn))
{
retval = NAV_STOP; /* goto stop phase */
}
else
{
next_pgn = 1; /* presents from the 1st program in PGC */
if (pgc_domain == TT_PGC)
{
set_sprm(SPRM_TT_PGCN_TT_DOM, next_pgcn);
done = 0;
for (tt = 0; (tt < ptt_srpti.vts_ttu_n) && !done; tt++)
{
for (ptt = 0; (ptt < ttu_srp_num[tt]) && !done; ptt++)
{
if ((ptt_srp[tt][ptt].pgcn == next_pgcn) &&
(ptt_srp[tt][ptt].pgn == next_pgn))
{
set_sprm(SPRM_PTTN_ONE_SEQ_PGC, (USHORT) (ptt + 1));
done = 1;
}
}
}
#if CHAP_DISP_MODE == CHAP_DISP_1
if ((tt_srp[get_sprm(SPRM_TTN_TT_DOM) - 1].tt_pb_ty & 0x40) && /*⌨️ 快捷键说明
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