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dxx-rebirth/main/movie.c

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/* $Id: movie.c,v 1.36 2004-08-06 20:36:02 schaffner Exp $ */
/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
*/
/*
*
* Movie Playing Stuff
*
*/
#ifdef HAVE_CONFIG_H
#include <conf.h>
#endif
#ifdef RCS
static char rcsid[] = "$Id: movie.c,v 1.36 2004-08-06 20:36:02 schaffner Exp $";
#endif
#define DEBUG_LEVEL CON_NORMAL
#include <string.h>
#ifndef macintosh
# ifndef _WIN32_WCE
# include <sys/types.h>
# include <sys/stat.h>
# include <fcntl.h>
# endif
# ifndef _MSC_VER
# include <unistd.h>
# endif
#endif // ! macintosh
#include <ctype.h>
#include "movie.h"
#include "console.h"
#include "args.h"
#include "key.h"
#include "digi.h"
#include "songs.h"
#include "inferno.h"
#include "palette.h"
#include "strutil.h"
#include "error.h"
#include "u_mem.h"
#include "byteswap.h"
#include "gr.h"
#include "gamefont.h"
#include "cfile.h"
#include "menu.h"
#include "libmve.h"
#include "text.h"
#include "screens.h"
extern int MenuHiresAvailable;
extern char CDROM_dir[];
#define VID_PLAY 0
#define VID_PAUSE 1
int Vid_State;
// Subtitle data
typedef struct {
short first_frame,last_frame;
char *msg;
} subtitle;
#define MAX_SUBTITLES 500
#define MAX_ACTIVE_SUBTITLES 3
subtitle Subtitles[MAX_SUBTITLES];
int Num_subtitles;
// Movielib data
typedef struct {
char name[FILENAME_LEN];
int offset,len;
} ml_entry;
#define MLF_ON_CD 1
#define MAX_MOVIES_PER_LIB 50 //determines size of malloc
typedef struct {
char name[100]; //[FILENAME_LEN];
int n_movies;
ubyte flags,pad[3];
ml_entry *movies;
} movielib;
#ifdef D2_OEM
char movielib_files[][FILENAME_LEN] = {"intro-l.mvl","other-l.mvl","robots-l.mvl","oem-l.mvl"};
#else
char movielib_files[][FILENAME_LEN] = {"intro-l.mvl","other-l.mvl","robots-l.mvl"};
#endif
#define N_BUILTIN_MOVIE_LIBS (sizeof(movielib_files)/sizeof(*movielib_files))
#define N_MOVIE_LIBS (N_BUILTIN_MOVIE_LIBS+1)
#define EXTRA_ROBOT_LIB N_BUILTIN_MOVIE_LIBS
movielib *movie_libs[N_MOVIE_LIBS];
//do we have the robot movies available
int robot_movies = 0; //0 means none, 1 means lowres, 2 means hires
int MovieHires = 1; //default is highres
CFILE *RoboFile = NULL;
int RoboFilePos = 0;
// Function Prototypes
int RunMovie(char *filename, int highres_flag, int allow_abort,int dx,int dy);
CFILE *open_movie_file(char *filename, int must_have);
int reset_movie_file(CFILE *handle);
void change_filename_ext( char *dest, char *src, char *ext );
void decode_text_line(char *p);
void draw_subtitles(int frame_num);
// ----------------------------------------------------------------------
void* MPlayAlloc(unsigned size)
{
return d_malloc(size);
}
void MPlayFree(void *p)
{
d_free(p);
}
//-----------------------------------------------------------------------
unsigned int FileRead(void *handle, void *buf, unsigned int count)
{
unsigned numread;
numread = cfread(buf, 1, count, (CFILE *)handle);
return (numread == count);
}
//-----------------------------------------------------------------------
//filename will actually get modified to be either low-res or high-res
//returns status. see values in movie.h
int PlayMovie(const char *filename, int must_have)
{
char name[FILENAME_LEN],*p;
int c, ret;
#ifndef RELEASE
if (FindArg("-nomovies"))
return MOVIE_NOT_PLAYED;
#endif
strcpy(name,filename);
if ((p=strchr(name,'.')) == NULL) //add extension, if missing
strcat(name,".mve");
//check for escape already pressed & abort if so
while ((c=key_inkey()) != 0)
if (c == KEY_ESC)
return MOVIE_ABORTED;
// Stop all digital sounds currently playing.
digi_stop_all();
// Stop all songs
songs_stop_all();
digi_close();
// Start sound
if (!FindArg("-nosound"))
MVE_sndInit(1);
else
MVE_sndInit(-1);
ret = RunMovie(name,MovieHires,must_have,-1,-1);
if (!FindArg("-nosound"))
digi_init();
Screen_mode = -1; //force screen reset
return ret;
}
void MovieShowFrame(ubyte *buf, uint bufw, uint bufh, uint sx, uint sy,
uint w, uint h, uint dstx, uint dsty)
{
grs_bitmap source_bm;
//mprintf((0,"MovieShowFrame %d,%d %d,%d %d,%d %d,%d\n",bufw,bufh,sx,sy,w,h,dstx,dsty));
Assert(bufw == w && bufh == h);
source_bm.bm_x = source_bm.bm_y = 0;
source_bm.bm_w = source_bm.bm_rowsize = bufw;
source_bm.bm_h = bufh;
source_bm.bm_type = BM_LINEAR;
source_bm.bm_flags = 0;
source_bm.bm_data = buf;
gr_bm_ubitblt(bufw,bufh,dstx,dsty,sx,sy,&source_bm,&grd_curcanv->cv_bitmap);
}
//our routine to set the pallete, called from the movie code
void MovieSetPalette(unsigned char *p, unsigned start, unsigned count)
{
if (count == 0)
return;
//mprintf((0,"SetPalette p=%x, start=%d, count=%d\n",p,start,count));
//Color 0 should be black, and we get color 255
Assert(start>=1 && start+count-1<=254);
//Set color 0 to be black
gr_palette[0] = gr_palette[1] = gr_palette[2] = 0;
//Set color 255 to be our subtitle color
gr_palette[765] = gr_palette[766] = gr_palette[767] = 50;
//movie libs palette into our array
memcpy(gr_palette+start*3,p+start*3,count*3);
//finally set the palette in the hardware
//gr_palette_load(gr_palette);
//MVE_SetPalette(p, start, count);
}
#if 0
typedef struct bkg {
short x, y, w, h; // The location of the menu.
grs_bitmap * bmp; // The background under the menu.
} bkg;
bkg movie_bg = {0,0,0,0,NULL};
#endif
#define BOX_BORDER (MenuHires?40:20)
void show_pause_message(char *msg)
{
int w,h,aw;
int x,y;
gr_set_current_canvas(NULL);
gr_set_curfont( SMALL_FONT );
gr_get_string_size(msg,&w,&h,&aw);
x = (grd_curscreen->sc_w-w)/2;
y = (grd_curscreen->sc_h-h)/2;
#if 0
if (movie_bg.bmp) {
gr_free_bitmap(movie_bg.bmp);
movie_bg.bmp = NULL;
}
// Save the background of the display
movie_bg.x=x; movie_bg.y=y; movie_bg.w=w; movie_bg.h=h;
movie_bg.bmp = gr_create_bitmap( w+BOX_BORDER, h+BOX_BORDER );
gr_bm_ubitblt(w+BOX_BORDER, h+BOX_BORDER, 0, 0, x-BOX_BORDER/2, y-BOX_BORDER/2, &(grd_curcanv->cv_bitmap), movie_bg.bmp );
#endif
gr_setcolor(0);
gr_rect(x-BOX_BORDER/2,y-BOX_BORDER/2,x+w+BOX_BORDER/2-1,y+h+BOX_BORDER/2-1);
gr_set_fontcolor( 255, -1 );
gr_ustring( 0x8000, y, msg );
gr_update();
}
void clear_pause_message()
{
#if 0
if (movie_bg.bmp) {
gr_bitmap(movie_bg.x-BOX_BORDER/2, movie_bg.y-BOX_BORDER/2, movie_bg.bmp);
gr_free_bitmap(movie_bg.bmp);
movie_bg.bmp = NULL;
}
#endif
}
//returns status. see movie.h
int RunMovie(char *filename, int hires_flag, int must_have,int dx,int dy)
{
CFILE *filehndl;
int result=1,aborted=0;
int track = 0;
int frame_num;
int key;
#ifdef OGL
ubyte pal_save[768];
#endif
result=1;
// Open Movie file. If it doesn't exist, no movie, just return.
filehndl = open_movie_file(filename,must_have);
if (filehndl == NULL)
{
if (must_have)
con_printf(CON_NORMAL, "movie: RunMovie: Cannot open movie <%s>\n",filename);
return MOVIE_NOT_PLAYED;
}
MVE_memCallbacks(MPlayAlloc, MPlayFree);
MVE_ioCallbacks(FileRead);
if (hires_flag) {
gr_set_mode(SM(640,480));
} else {
gr_set_mode(SM(320,200));
}
#ifdef OGL
set_screen_mode(SCREEN_MENU);
gr_copy_palette(pal_save, gr_palette, 768);
memset(gr_palette, 0, 768);
gr_palette_load(gr_palette);
#endif
#if !defined(POLY_ACC)
MVE_sfCallbacks(MovieShowFrame);
MVE_palCallbacks(MovieSetPalette);
#endif
if (MVE_rmPrepMovie((void *)filehndl, dx, dy, track)) {
Int3();
return MOVIE_NOT_PLAYED;
}
frame_num = 0;
FontHires = FontHiresAvailable && hires_flag;
while((result = MVE_rmStepMovie()) == 0) {
draw_subtitles(frame_num);
gr_palette_load(gr_palette); // moved this here because of flashing
gr_update();
key = key_inkey();
// If ESCAPE pressed, then quit movie.
if (key == KEY_ESC) {
result = aborted = 1;
break;
}
// If PAUSE pressed, then pause movie
if (key == KEY_PAUSE) {
MVE_rmHoldMovie();
show_pause_message(TXT_PAUSE);
while (!key_inkey()) ;
clear_pause_message();
}
#ifdef GR_SUPPORTS_FULLSCREEN_TOGGLE
if ((key == KEY_ALTED+KEY_ENTER) ||
(key == KEY_ALTED+KEY_PADENTER))
gr_toggle_fullscreen();
#endif
frame_num++;
}
Assert(aborted || result == MVE_ERR_EOF); ///movie should be over
MVE_rmEndMovie();
cfclose(filehndl); // Close Movie File
// Restore old graphic state
Screen_mode=-1; //force reset of screen mode
#ifdef OGL
gr_copy_palette(gr_palette, pal_save, 768);
gr_palette_load(pal_save);
#endif
return (aborted?MOVIE_ABORTED:MOVIE_PLAYED_FULL);
}
int InitMovieBriefing()
{
#if 0
if (MenuHires)
gr_set_mode(SM(640,480));
else
gr_set_mode(SM(320,200));
gr_init_sub_canvas( &VR_screen_pages[0], &grd_curscreen->sc_canvas, 0, 0, grd_curscreen->sc_w, grd_curscreen->sc_h );
gr_init_sub_canvas( &VR_screen_pages[1], &grd_curscreen->sc_canvas, 0, 0, grd_curscreen->sc_w, grd_curscreen->sc_h );
#endif
return 1;
}
//returns 1 if frame updated ok
int RotateRobot()
{
int err;
err = MVE_rmStepMovie();
gr_palette_load(gr_palette);
if (err == MVE_ERR_EOF) //end of movie, so reset
{
reset_movie_file(RoboFile);
if (MVE_rmPrepMovie((void *)RoboFile, MenuHires?280:140, MenuHires?200:80, 0)) {
Int3();
return 0;
}
}
else if (err) {
Int3();
return 0;
}
return 1;
}
void DeInitRobotMovie(void)
{
MVE_rmEndMovie();
cfclose(RoboFile); // Close Movie File
}
int InitRobotMovie(char *filename)
{
if (FindArg("-nomovies"))
return 0;
con_printf(DEBUG_LEVEL, "RoboFile=%s\n", filename);
MVE_sndInit(-1); //tell movies to play no sound for robots
RoboFile = open_movie_file(filename, 1);
if (RoboFile == NULL)
{
Warning("movie: InitRobotMovie: Cannot open movie file <%s>",filename);
return MOVIE_NOT_PLAYED;
}
Vid_State = VID_PLAY;
if (MVE_rmPrepMovie((void *)RoboFile, MenuHires?280:140, MenuHires?200:80, 0)) {
Int3();
return 0;
}
RoboFilePos = cfseek(RoboFile, 0L, SEEK_CUR);
con_printf(DEBUG_LEVEL, "RoboFilePos=%d!\n", RoboFilePos);
return 1;
}
/*
* Subtitle system code
*/
char *subtitle_raw_data;
//search for next field following whitespace
char *next_field (char *p)
{
while (*p && !isspace(*p))
p++;
if (!*p)
return NULL;
while (*p && isspace(*p))
p++;
if (!*p)
return NULL;
return p;
}
int init_subtitles(char *filename)
{
CFILE *ifile;
int size,read_count;
char *p;
int have_binary = 0;
Num_subtitles = 0;
if (! FindArg("-subtitles"))
return 0;
ifile = cfopen(filename,"rb"); //try text version
if (!ifile) { //no text version, try binary version
char filename2[FILENAME_LEN];
change_filename_ext(filename2,filename,".TXB");
ifile = cfopen(filename2,"rb");
if (!ifile)
return 0;
have_binary = 1;
}
size = cfilelength(ifile);
MALLOC (subtitle_raw_data, char, size+1);
read_count = cfread(subtitle_raw_data, 1, size, ifile);
cfclose(ifile);
subtitle_raw_data[size] = 0;
if (read_count != size) {
d_free(subtitle_raw_data);
return 0;
}
p = subtitle_raw_data;
while (p && p < subtitle_raw_data+size) {
char *endp;
endp = strchr(p,'\n');
if (endp) {
if (endp[-1] == '\r')
endp[-1] = 0; //handle 0d0a pair
*endp = 0; //string termintor
}
if (have_binary)
decode_text_line(p);
if (*p != ';') {
Subtitles[Num_subtitles].first_frame = atoi(p);
p = next_field(p); if (!p) continue;
Subtitles[Num_subtitles].last_frame = atoi(p);
p = next_field(p); if (!p) continue;
Subtitles[Num_subtitles].msg = p;
Assert(Num_subtitles==0 || Subtitles[Num_subtitles].first_frame >= Subtitles[Num_subtitles-1].first_frame);
Assert(Subtitles[Num_subtitles].last_frame >= Subtitles[Num_subtitles].first_frame);
Num_subtitles++;
}
p = endp+1;
}
return 1;
}
void close_subtitles()
{
if (subtitle_raw_data)
d_free(subtitle_raw_data);
subtitle_raw_data = NULL;
Num_subtitles = 0;
}
//draw the subtitles for this frame
void draw_subtitles(int frame_num)
{
static int active_subtitles[MAX_ACTIVE_SUBTITLES];
static int num_active_subtitles,next_subtitle,line_spacing;
int t,y;
int must_erase=0;
if (frame_num == 0) {
num_active_subtitles = 0;
next_subtitle = 0;
gr_set_curfont( GAME_FONT );
line_spacing = grd_curcanv->cv_font->ft_h + (grd_curcanv->cv_font->ft_h >> 2);
gr_set_fontcolor(255,-1);
}
//get rid of any subtitles that have expired
for (t=0;t<num_active_subtitles;)
if (frame_num > Subtitles[active_subtitles[t]].last_frame) {
int t2;
for (t2=t;t2<num_active_subtitles-1;t2++)
active_subtitles[t2] = active_subtitles[t2+1];
num_active_subtitles--;
must_erase = 1;
}
else
t++;
//get any subtitles new for this frame
while (next_subtitle < Num_subtitles && frame_num >= Subtitles[next_subtitle].first_frame) {
if (num_active_subtitles >= MAX_ACTIVE_SUBTITLES)
Error("Too many active subtitles!");
active_subtitles[num_active_subtitles++] = next_subtitle;
next_subtitle++;
}
//find y coordinate for first line of subtitles
y = grd_curcanv->cv_bitmap.bm_h-((line_spacing+1)*MAX_ACTIVE_SUBTITLES+2);
//erase old subtitles if necessary
if (must_erase) {
gr_setcolor(0);
gr_rect(0,y,grd_curcanv->cv_bitmap.bm_w-1,grd_curcanv->cv_bitmap.bm_h-1);
}
//now draw the current subtitles
for (t=0;t<num_active_subtitles;t++)
if (active_subtitles[t] != -1) {
gr_string(0x8000,y,Subtitles[active_subtitles[t]].msg);
y += line_spacing+1;
}
}
movielib *init_new_movie_lib(char *filename, CFILE *fp)
{
int nfiles,offset;
int i,n;
movielib *table;
//read movie file header
nfiles = cfile_read_int(fp); //get number of files
//table = d_malloc(sizeof(*table) + sizeof(ml_entry)*nfiles);
MALLOC(table, movielib, 1);
MALLOC(table->movies, ml_entry, nfiles);
strcpy(table->name,filename);
table->n_movies = nfiles;
offset = 4+4+nfiles*(13+4); //id + nfiles + nfiles * (filename + size)
for (i=0;i<nfiles;i++) {
int len;
n = cfread(table->movies[i].name, 13, 1, fp);
if ( n != 1 )
break; //end of file (probably)
len = cfile_read_int(fp);
table->movies[i].len = len;
table->movies[i].offset = offset;
offset += table->movies[i].len;
}
cfclose(fp);
table->flags = 0;
return table;
}
movielib *init_old_movie_lib(char *filename, CFILE *fp)
{
int nfiles,size;
int i;
movielib *table,*table2;
nfiles = 0;
//allocate big table
table = d_malloc(sizeof(*table) + sizeof(ml_entry)*MAX_MOVIES_PER_LIB);
while( 1 ) {
int len;
i = cfread(table->movies[nfiles].name, 13, 1, fp);
if ( i != 1 )
break; //end of file (probably)
i = cfread(&len, 4, 1, fp);
if ( i != 1 )
Error("error reading movie library <%s>",filename);
table->movies[nfiles].len = INTEL_INT(len);
table->movies[nfiles].offset = cftell(fp);
cfseek(fp, INTEL_INT(len), SEEK_CUR); //skip data
nfiles++;
}
//allocate correct-sized table
size = sizeof(*table) + sizeof(ml_entry)*nfiles;
table2 = d_malloc(size);
memcpy(table2,table,size);
d_free(table);
table = table2;
strcpy(table->name,filename);
table->n_movies = nfiles;
cfclose(fp);
table->flags = 0;
return table;
}
//find the specified movie library, and read in list of movies in it
movielib *init_movie_lib(char *filename)
{
//note: this based on cfile_init_hogfile()
char id[4];
CFILE *fp;
fp = cfopen(filename, "rb");
if ( fp == NULL )
return NULL;
cfread(id, 4, 1, fp);
if ( !strncmp( id, "DMVL", 4 ) )
return init_new_movie_lib(filename,fp);
else if ( !strncmp( id, "DHF", 3 ) ) {
cfseek(fp,-1,SEEK_CUR); //old file had 3 char id
return init_old_movie_lib(filename,fp);
}
else {
cfclose(fp);
return NULL;
}
}
void close_movie(int i)
{
if (movie_libs[i]) {
d_free(movie_libs[i]->movies);
d_free(movie_libs[i]);
}
}
void close_movies()
{
int i;
for (i=0;i<N_MOVIE_LIBS;i++)
close_movie(i);
}
//ask user to put the D2 CD in.
//returns -1 if ESC pressed, 0 if OK chosen
//CD may not have been inserted
int request_cd(void)
{
#if 0
ubyte save_pal[256*3];
grs_canvas *save_canv,*tcanv;
int ret,was_faded=gr_palette_faded_out;
gr_palette_clear();
save_canv = grd_curcanv;
tcanv = gr_create_canvas(grd_curcanv->cv_w,grd_curcanv->cv_h);
gr_set_current_canvas(tcanv);
gr_ubitmap(0,0,&save_canv->cv_bitmap);
gr_set_current_canvas(save_canv);
gr_clear_canvas(BM_XRGB(0,0,0));
memcpy(save_pal,gr_palette,sizeof(save_pal));
memcpy(gr_palette,last_palette_for_color_fonts,sizeof(gr_palette));
try_again:;
ret = nm_messagebox( "CD ERROR", 1, "Ok", "Please insert your Descent II CD");
if (ret == -1) {
int ret2;
ret2 = nm_messagebox( "CD ERROR", 2, "Try Again", "Leave Game", "You must insert your\nDescent II CD to Continue");
if (ret2 == -1 || ret2 == 0)
goto try_again;
}
force_rb_register = 1; //disc has changed; force register new CD
gr_palette_clear();
memcpy(gr_palette,save_pal,sizeof(save_pal));
gr_ubitmap(0,0,&tcanv->cv_bitmap);
if (!was_faded)
gr_palette_load(gr_palette);
gr_free_canvas(tcanv);
return ret;
#else
con_printf(DEBUG_LEVEL, "STUB: movie: request_cd\n");
return 0;
#endif
}
void init_movie(char *filename, int libnum, int is_robots, int required)
{
int high_res, try;
char *res = strchr(filename, '.') - 1; // 'h' == high resolution, 'l' == low
#ifndef RELEASE
if (FindArg("-nomovies")) {
movie_libs[libnum] = NULL;
return;
}
#endif
//for robots, load highres versions if highres menus set
if (is_robots)
high_res = MenuHiresAvailable;
else
high_res = MovieHires;
if (high_res)
*res = 'h';
for (try = 0; (movie_libs[libnum] = init_movie_lib(filename)) == NULL; try++) {
char name2[100];
strcpy(name2,CDROM_dir);
strcat(name2,filename);
movie_libs[libnum] = init_movie_lib(name2);
if (movie_libs[libnum] != NULL) {
movie_libs[libnum]->flags |= MLF_ON_CD;
break; // we found our movie on the CD
} else {
if (try == 0) { // first try
if (*res == 'h') { // try low res instead
*res = 'l';
high_res = 0;
} else if (*res == 'l') { // try high
*res = 'h';
high_res = 1;
} else {
if (required)
Warning("Cannot open movie file <%s>",filename);
break;
}
} else { // try == 1
if (required) {
*res = '*';
Warning("Cannot open any movie file <%s>", filename);
}
break;
}
}
}
if (is_robots && movie_libs[libnum]!=NULL)
robot_movies = high_res?2:1;
}
//find and initialize the movie libraries
void init_movies()
{
int i;
int is_robots;
for (i=0;i<N_BUILTIN_MOVIE_LIBS;i++) {
if (!strnicmp(movielib_files[i],"robot",5))
is_robots = 1;
else
is_robots = 0;
init_movie(movielib_files[i],i,is_robots,1);
}
movie_libs[EXTRA_ROBOT_LIB] = NULL;
atexit(close_movies);
}
void init_extra_robot_movie(char *filename)
{
close_movie(EXTRA_ROBOT_LIB);
init_movie(filename,EXTRA_ROBOT_LIB,1,0);
}
CFILE *movie_handle;
int movie_start;
//looks through a movie library for a movie file
//returns filehandle, with fileposition at movie, or -1 if can't find
CFILE *search_movie_lib(movielib *lib, char *filename, int must_have)
{
int i;
CFILE *filehandle;
if (lib == NULL)
return NULL;
for (i=0;i<lib->n_movies;i++)
if (!stricmp(filename,lib->movies[i].name)) { //found the movie in a library
int from_cd;
from_cd = (lib->flags & MLF_ON_CD);
if (from_cd)
songs_stop_redbook(); //ready to read from CD
do { //keep trying until we get the file handle
movie_handle = filehandle = cfopen(lib->name, "rb");
if (must_have && from_cd && filehandle == NULL)
{ //didn't get file!
if (request_cd() == -1) //ESC from requester
break; //bail from here. will get error later
}
} while (must_have && from_cd && filehandle == NULL);
if (filehandle)
cfseek(filehandle, (movie_start = lib->movies[i].offset), SEEK_SET);
return filehandle;
}
return NULL;
}
//returns file handle
CFILE *open_movie_file(char *filename, int must_have)
{
CFILE *filehandle;
int i;
for (i=0;i<N_MOVIE_LIBS;i++) {
if ((filehandle = search_movie_lib(movie_libs[i], filename, must_have)) != NULL)
return filehandle;
}
return NULL; //couldn't find it
}
//sets the file position to the start of this already-open file
int reset_movie_file(CFILE *handle)
{
Assert(handle == movie_handle);
cfseek(handle, movie_start, SEEK_SET);
return 0; //everything is cool
}
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