highlight.c

linux下的MPEG1

/* 
 * Copyright (C) 2000 Rich Wareham <[e-mail]>
 * 
 * This file is part of libdvdnav, a DVD navigation library.
 * 
 * libdvdnav 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.
 * 
 * libdvdnav 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA
 *
 * $Id: highlight.c,v 1.17 2004/03/16 11:43:38 mroi Exp $
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <assert.h>
#include "nav_types.h"
#include "dvdnav_internal.h"

/*
#define BUTTON_TESTING
*/

#ifdef BUTTON_TESTING

#include "nav_print.h"

static void print_time(dvd_time_t *dtime) {
  const char *rate;

  assert((dtime->hour>>4) < 0xa && (dtime->hour&0xf) < 0xa);
  assert((dtime->minute>>4) < 0x7 && (dtime->minute&0xf) < 0xa);
  assert((dtime->second>>4) < 0x7 && (dtime->second&0xf) < 0xa);
  assert((dtime->frame_u&0xf) < 0xa);

  fprintf(MSG_OUT,"%02x:%02x:%02x.%02x",
         dtime->hour,
         dtime->minute,
         dtime->second,
         dtime->frame_u & 0x3f);
  switch((dtime->frame_u & 0xc0) >> 6) {
  case 1:
    rate = "25.00";
    break;
  case 3:
    rate = "29.97";
    break;
  default:
    rate = "(please send a bug report)";
    break;
  }
  fprintf(MSG_OUT," @ %s fps", rate);
}

static void nav_print_PCI_GI(pci_gi_t *pci_gi) {
  int32_t i;

  fprintf(MSG_OUT,"libdvdnav: pci_gi:\n");
  fprintf(MSG_OUT,"libdvdnav: nv_pck_lbn    0x%08x\n", pci_gi->nv_pck_lbn);
  fprintf(MSG_OUT,"libdvdnav: vobu_cat      0x%04x\n", pci_gi->vobu_cat);
  fprintf(MSG_OUT,"libdvdnav: vobu_uop_ctl  0x%08x\n", *(uint32_t*)&pci_gi->vobu_uop_ctl);
  fprintf(MSG_OUT,"libdvdnav: vobu_s_ptm    0x%08x\n", pci_gi->vobu_s_ptm);
  fprintf(MSG_OUT,"libdvdnav: vobu_e_ptm    0x%08x\n", pci_gi->vobu_e_ptm);
  fprintf(MSG_OUT,"libdvdnav: vobu_se_e_ptm 0x%08x\n", pci_gi->vobu_se_e_ptm);
  fprintf(MSG_OUT,"libdvdnav: e_eltm        ");
  print_time(&pci_gi->e_eltm);
  fprintf(MSG_OUT,"\n");

  fprintf(MSG_OUT,"libdvdnav: vobu_isrc     \"");
  for(i = 0; i < 32; i++) {
    char c = pci_gi->vobu_isrc[i];
    if((c >= ' ') && (c <= '~'))
      fprintf(MSG_OUT,"%c", c);
    else
      fprintf(MSG_OUT,".");
  }
  fprintf(MSG_OUT,"\"\n");
}

static void nav_print_NSML_AGLI(nsml_agli_t *nsml_agli) {
  int32_t i, j = 0;

  for(i = 0; i < 9; i++)
    j |= nsml_agli->nsml_agl_dsta[i];
  if(j == 0)
    return;

  fprintf(MSG_OUT,"libdvdnav: nsml_agli:\n");
  for(i = 0; i < 9; i++)
    if(nsml_agli->nsml_agl_dsta[i])
      fprintf(MSG_OUT,"libdvdnav: nsml_agl_c%d_dsta  0x%08x\n", i + 1,
             nsml_agli->nsml_agl_dsta[i]);
}

static void nav_print_HL_GI(hl_gi_t *hl_gi, int32_t *btngr_ns, int32_t *btn_ns) {

  if((hl_gi->hli_ss & 0x03) == 0)
    return;

  fprintf(MSG_OUT,"libdvdnav: hl_gi:\n");
  fprintf(MSG_OUT,"libdvdnav: hli_ss        0x%01x\n", hl_gi->hli_ss & 0x03);
  fprintf(MSG_OUT,"libdvdnav: hli_s_ptm     0x%08x\n", hl_gi->hli_s_ptm);
  fprintf(MSG_OUT,"libdvdnav: hli_e_ptm     0x%08x\n", hl_gi->hli_e_ptm);
  fprintf(MSG_OUT,"libdvdnav: btn_se_e_ptm  0x%08x\n", hl_gi->btn_se_e_ptm);

  *btngr_ns = hl_gi->btngr_ns;
  fprintf(MSG_OUT,"libdvdnav: btngr_ns      %d\n",  hl_gi->btngr_ns);
  fprintf(MSG_OUT,"libdvdnav: btngr%d_dsp_ty    0x%02x\n", 1, hl_gi->btngr1_dsp_ty);
  fprintf(MSG_OUT,"libdvdnav: btngr%d_dsp_ty    0x%02x\n", 2, hl_gi->btngr2_dsp_ty);
  fprintf(MSG_OUT,"libdvdnav: btngr%d_dsp_ty    0x%02x\n", 3, hl_gi->btngr3_dsp_ty);

  fprintf(MSG_OUT,"libdvdnav: btn_ofn       %d\n", hl_gi->btn_ofn);
  *btn_ns = hl_gi->btn_ns;
  fprintf(MSG_OUT,"libdvdnav: btn_ns        %d\n", hl_gi->btn_ns);
  fprintf(MSG_OUT,"libdvdnav: nsl_btn_ns    %d\n", hl_gi->nsl_btn_ns);
  fprintf(MSG_OUT,"libdvdnav: fosl_btnn     %d\n", hl_gi->fosl_btnn);
  fprintf(MSG_OUT,"libdvdnav: foac_btnn     %d\n", hl_gi->foac_btnn);
}

static void nav_print_BTN_COLIT(btn_colit_t *btn_colit) {
  int32_t i, j;

  j = 0;
  for(i = 0; i < 6; i++)
    j |= btn_colit->btn_coli[i/2][i&1];
  if(j == 0)
    return;

  fprintf(MSG_OUT,"libdvdnav: btn_colit:\n");
  for(i = 0; i < 3; i++)
    for(j = 0; j < 2; j++)
      fprintf(MSG_OUT,"libdvdnav: btn_cqoli %d  %s_coli:  %08x\n",
             i, (j == 0) ? "sl" : "ac",
             btn_colit->btn_coli[i][j]);
}

static void nav_print_BTNIT(btni_t *btni_table, int32_t btngr_ns, int32_t btn_ns) {
  int32_t i, j, k;

  fprintf(MSG_OUT,"libdvdnav: btnit:\n");
  fprintf(MSG_OUT,"libdvdnav: btngr_ns: %i\n", btngr_ns);
  fprintf(MSG_OUT,"libdvdnav: btn_ns: %i\n", btn_ns);

  if(btngr_ns == 0)
    return;

  for(i = 0; i < btngr_ns; i++) {
    for(j = 0; j < (36 / btngr_ns); j++) {
      if(j < btn_ns) {
        btni_t *btni = &btni_table[(36 / btngr_ns) * i + j];

        fprintf(MSG_OUT,"libdvdnav: group %d btni %d:  ", i+1, j+1);
        fprintf(MSG_OUT,"btn_coln %d, auto_action_mode %d\n",
               btni->btn_coln, btni->auto_action_mode);
        fprintf(MSG_OUT,"libdvdnav: coords   (%d, %d) .. (%d, %d)\n",
               btni->x_start, btni->y_start, btni->x_end, btni->y_end);

        fprintf(MSG_OUT,"libdvdnav: up %d, ", btni->up);
        fprintf(MSG_OUT,"down %d, ", btni->down);
        fprintf(MSG_OUT,"left %d, ", btni->left);
        fprintf(MSG_OUT,"right %d\n", btni->right);
        for(k = 0; k < 8; k++) {
          fprintf(MSG_OUT, "libdvdnav: %02x ", btni->cmd.bytes[k]);
        }
        fprintf(MSG_OUT, "| ");
#ifdef TRACE
        vm_print_mnemonic(&btni->cmd);
#endif
        fprintf(MSG_OUT, "\n");
      }
    }
  }
}

static void nav_print_HLI(hli_t *hli) {
  int32_t btngr_ns = 0, btn_ns = 0;

  fprintf(MSG_OUT,"libdvdnav: hli:\n");
  nav_print_HL_GI(&hli->hl_gi, & btngr_ns, & btn_ns);
  nav_print_BTN_COLIT(&hli->btn_colit);
  nav_print_BTNIT(hli->btnit, btngr_ns, btn_ns);
}

void nav_print_PCI(pci_t *pci) {
  fprintf(MSG_OUT,"libdvdnav: pci packet:\n");
  nav_print_PCI_GI(&pci->pci_gi);
  nav_print_NSML_AGLI(&pci->nsml_agli);
  nav_print_HLI(&pci->hli);
}

#endif


/* Highlighting API calls */

dvdnav_status_t dvdnav_get_current_highlight(dvdnav_t *this, int32_t *button) {
  
  if(!this || !button) {
    printerr("Passed a NULL pointer.");
    return DVDNAV_STATUS_ERR;
  }

  /* Simply return the appropriate value based on the SPRM */
  if(((*button) = this->position_current.button) == -1)
    (*button) = this->vm->state.HL_BTNN_REG >> 10;
  
  return DVDNAV_STATUS_OK;
}

static btni_t *get_current_button(dvdnav_t *this, pci_t *pci) {
  int32_t button = 0;

  if(!this || !pci) {
    printerr("Passed a NULL pointer.");
    return NULL;
  }
  if(!pci->hli.hl_gi.hli_ss) {
    printerr("Not in a menu.");
    return NULL;
  }
  if(this->last_cmd_nav_lbn == pci->pci_gi.nv_pck_lbn) {
    printerr("This NAV has already been left.");
    return NULL;
  }

  button = this->vm->state.HL_BTNN_REG >> 10;
#ifdef BUTTON_TESTING
  nav_print_PCI(pci);
#endif
  
  return &(pci->hli.btnit[button-1]);
}

static dvdnav_status_t button_auto_action(dvdnav_t *this, pci_t *pci) {
  if (get_current_button(this, pci)->auto_action_mode)
    return dvdnav_button_activate(this, pci);
  return DVDNAV_STATUS_OK;
}

dvdnav_status_t dvdnav_upper_button_select(dvdnav_t *this, pci_t *pci) {
  btni_t *button_ptr;
  
  if(!(button_ptr = get_current_button(this, pci)))
    return DVDNAV_STATUS_ERR;