dvdread/nav_read.c

   1 /*
   2  * Copyright (C) 2000, 2001, 2002, 2003 Håkan Hjort <d95hjort@dtek.chalmers.se>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #include "config.h"
  20
  21 #include <stdio.h>
  22 #include <string.h>
  23 #include <inttypes.h>
  24
  25 #include "bswap.h"
  26 #include "nav_types.h"
  27 #include "nav_read.h"
  28 #include "dvdread_internal.h"
  29
  30 void navRead_PCI(pci_t *pci, unsigned char *buffer) {
  31   int i, j;
  32
  33   CHECK_VALUE(sizeof(pci_t) == PCI_BYTES - 1); // -1 for substream id
  34
  35   memcpy(pci, buffer, sizeof(pci_t));
  36
  37   /* Endian conversions  */
  38
  39   /* pci pci_gi */
  40   B2N_32(pci->pci_gi.nv_pck_lbn);
  41   B2N_16(pci->pci_gi.vobu_cat);
  42   B2N_32(pci->pci_gi.vobu_s_ptm);
  43   B2N_32(pci->pci_gi.vobu_e_ptm);
  44   B2N_32(pci->pci_gi.vobu_se_e_ptm);
  45
  46   /* pci nsml_agli */
  47   for(i = 0; i < 9; i++)
  48     B2N_32(pci->nsml_agli.nsml_agl_dsta[i]);
  49
  50   /* pci hli hli_gi */
  51   B2N_16(pci->hli.hl_gi.hli_ss);
  52   B2N_32(pci->hli.hl_gi.hli_s_ptm);
  53   B2N_32(pci->hli.hl_gi.hli_e_ptm);
  54   B2N_32(pci->hli.hl_gi.btn_se_e_ptm);
  55
  56   /* pci hli btn_colit */
  57   for(i = 0; i < 3; i++)
  58     for(j = 0; j < 2; j++)
  59       B2N_32(pci->hli.btn_colit.btn_coli[i][j]);
  60
  61   /* NOTE: I've had to change the structure from the disk layout to get
  62    * the packing to work with Sun's Forte C compiler. */
  63
  64   /* pci hli btni */
  65   for(i = 0; i < 36; i++) {
  66     char tmp[sizeof(pci->hli.btnit[i])], swap;
  67     memcpy(tmp, &(pci->hli.btnit[i]), sizeof(pci->hli.btnit[i]));
  68     /* Byte 4 to 7 are 'rotated' was: ABCD EFGH IJ is: ABCG DEFH IJ */
  69     swap   = tmp[6];
  70     tmp[6] = tmp[5];
  71     tmp[5] = tmp[4];
  72     tmp[4] = tmp[3];
  73     tmp[3] = swap;
  74
  75     /* Then there are the two B2N_24(..) calls */
  76 #ifndef WORDS_BIGENDIAN
  77     swap = tmp[0];
  78     tmp[0] = tmp[2];
  79     tmp[2] = swap;
  80
  81     swap = tmp[4];
  82     tmp[4] = tmp[6];
  83     tmp[6] = swap;
  84 #endif
  85     memcpy(&(pci->hli.btnit[i]), tmp, sizeof(pci->hli.btnit[i]));
  86   }
  87
  88
  89 #ifndef NDEBUG
  90   /* Asserts */
  91
  92   /* pci pci gi */
  93   CHECK_VALUE(pci->pci_gi.zero1 == 0);
  94
  95   /* pci hli hli_gi */
  96   CHECK_VALUE(pci->hli.hl_gi.zero1 == 0);
  97   CHECK_VALUE(pci->hli.hl_gi.zero2 == 0);
  98   CHECK_VALUE(pci->hli.hl_gi.zero3 == 0);
  99   CHECK_VALUE(pci->hli.hl_gi.zero4 == 0);
 100   CHECK_VALUE(pci->hli.hl_gi.zero5 == 0);
 101
 102   /* Are there buttons defined here? */
 103   if((pci->hli.hl_gi.hli_ss & 0x03) != 0) {
 104     CHECK_VALUE(pci->hli.hl_gi.btn_ns != 0);
 105     CHECK_VALUE(pci->hli.hl_gi.btngr_ns != 0);
 106   } else {
 107     CHECK_VALUE((pci->hli.hl_gi.btn_ns != 0 && pci->hli.hl_gi.btngr_ns != 0)
 108            || (pci->hli.hl_gi.btn_ns == 0 && pci->hli.hl_gi.btngr_ns == 0));
 109   }
 110
 111   /* pci hli btnit */
 112   for(i = 0; i < pci->hli.hl_gi.btngr_ns; i++) {
 113     for(j = 0; j < (36 / pci->hli.hl_gi.btngr_ns); j++) {
 114       int n = (36 / pci->hli.hl_gi.btngr_ns) * i + j;
 115       CHECK_VALUE(pci->hli.btnit[n].zero1 == 0);
 116       CHECK_VALUE(pci->hli.btnit[n].zero2 == 0);
 117       CHECK_VALUE(pci->hli.btnit[n].zero3 == 0);
 118       CHECK_VALUE(pci->hli.btnit[n].zero4 == 0);
 119       CHECK_VALUE(pci->hli.btnit[n].zero5 == 0);
 120       CHECK_VALUE(pci->hli.btnit[n].zero6 == 0);
 121
 122       if (j < pci->hli.hl_gi.btn_ns) {
 123         CHECK_VALUE(pci->hli.btnit[n].x_start <= pci->hli.btnit[n].x_end);
 124         CHECK_VALUE(pci->hli.btnit[n].y_start <= pci->hli.btnit[n].y_end);
 125         CHECK_VALUE(pci->hli.btnit[n].up <= pci->hli.hl_gi.btn_ns);
 126         CHECK_VALUE(pci->hli.btnit[n].down <= pci->hli.hl_gi.btn_ns);
 127         CHECK_VALUE(pci->hli.btnit[n].left <= pci->hli.hl_gi.btn_ns);
 128         CHECK_VALUE(pci->hli.btnit[n].right <= pci->hli.hl_gi.btn_ns);
 129         //vmcmd_verify(pci->hli.btnit[n].cmd);
 130       } else {
 131         int k;
 132         CHECK_VALUE(pci->hli.btnit[n].btn_coln == 0);
 133         CHECK_VALUE(pci->hli.btnit[n].auto_action_mode == 0);
 134         CHECK_VALUE(pci->hli.btnit[n].x_start == 0);
 135         CHECK_VALUE(pci->hli.btnit[n].y_start == 0);
 136         CHECK_VALUE(pci->hli.btnit[n].x_end == 0);
 137         CHECK_VALUE(pci->hli.btnit[n].y_end == 0);
 138         CHECK_VALUE(pci->hli.btnit[n].up == 0);
 139         CHECK_VALUE(pci->hli.btnit[n].down == 0);
 140         CHECK_VALUE(pci->hli.btnit[n].left == 0);
 141         CHECK_VALUE(pci->hli.btnit[n].right == 0);
 142         for (k = 0; k < 8; k++)
 143           CHECK_VALUE(pci->hli.btnit[n].cmd.bytes[k] == 0); //CHECK_ZERO?
 144       }
 145     }
 146   }
 147 #endif /* !NDEBUG */
 148 }
 149
 150 void navRead_DSI(dsi_t *dsi, unsigned char *buffer) {
 151   int i;
 152
 153   CHECK_VALUE(sizeof(dsi_t) == DSI_BYTES - 1); // -1 for substream id
 154
 155   memcpy(dsi, buffer, sizeof(dsi_t));
 156
 157   /* Endian conversions */
 158
 159   /* dsi dsi gi */
 160   B2N_32(dsi->dsi_gi.nv_pck_scr);
 161   B2N_32(dsi->dsi_gi.nv_pck_lbn);
 162   B2N_32(dsi->dsi_gi.vobu_ea);
 163   B2N_32(dsi->dsi_gi.vobu_1stref_ea);
 164   B2N_32(dsi->dsi_gi.vobu_2ndref_ea);
 165   B2N_32(dsi->dsi_gi.vobu_3rdref_ea);
 166   B2N_16(dsi->dsi_gi.vobu_vob_idn);
 167
 168   /* dsi sml pbi */
 169   B2N_16(dsi->sml_pbi.category);
 170   B2N_32(dsi->sml_pbi.ilvu_ea);
 171   B2N_32(dsi->sml_pbi.ilvu_sa);
 172   B2N_16(dsi->sml_pbi.size);
 173   B2N_32(dsi->sml_pbi.vob_v_s_s_ptm);
 174   B2N_32(dsi->sml_pbi.vob_v_e_e_ptm);
 175
 176   /* dsi sml agli */
 177   for(i = 0; i < 9; i++) {
 178     B2N_32(dsi->sml_agli.data[ i ].address);
 179     B2N_16(dsi->sml_agli.data[ i ].size);
 180   }
 181
 182   /* dsi vobu sri */
 183   B2N_32(dsi->vobu_sri.next_video);
 184   for(i = 0; i < 19; i++)
 185     B2N_32(dsi->vobu_sri.fwda[i]);
 186   B2N_32(dsi->vobu_sri.next_vobu);
 187   B2N_32(dsi->vobu_sri.prev_vobu);
 188   for(i = 0; i < 19; i++)
 189     B2N_32(dsi->vobu_sri.bwda[i]);
 190   B2N_32(dsi->vobu_sri.prev_video);
 191
 192   /* dsi synci */
 193   for(i = 0; i < 8; i++)
 194     B2N_16(dsi->synci.a_synca[i]);
 195   for(i = 0; i < 32; i++)
 196     B2N_32(dsi->synci.sp_synca[i]);
 197
 198
 199   /* Asserts */
 200
 201   /* dsi dsi gi */
 202   CHECK_VALUE(dsi->dsi_gi.zero1 == 0);
 203 }
 204