+
−/*
+
−    SDL - Simple DirectMedia Layer
+
−    Copyright (C) 1997-2012 Sam Lantinga
+
−
+
−    This library is free software; you can redistribute it and/or
+
−    modify it under the terms of the GNU Lesser General Public
+
−    License as published by the Free Software Foundation; either
+
−    version 2.1 of the License, or (at your option) any later version.
+
−
+
−    This library 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
+
−    Lesser General Public License for more details.
+
−
+
−    You should have received a copy of the GNU Lesser General Public
+
−    License along with this library; if not, write to the Free Software
+
−    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
−
+
−    Sam Lantinga
+
−    slouken@libsdl.org
+
−*/
+
−
+
−/**
+
− *  @file SDL_cdrom.h
+
− *  This is the CD-audio control API for Simple DirectMedia Layer
+
− */
+
−
+
−#ifndef _SDL_cdrom_h
+
−#define _SDL_cdrom_h
+
−
+
−#include "SDL_stdinc.h"
+
−#include "SDL_error.h"
+
−
+
−#include "begin_code.h"
+
−/* Set up for C function definitions, even when using C++ */
+
−#ifdef __cplusplus
+
−extern "C" {
+
−#endif
+
−
+
−/**
+
− *  @file SDL_cdrom.h
+
− *  In order to use these functions, SDL_Init() must have been called
+
− *  with the SDL_INIT_CDROM flag.  This causes SDL to scan the system
+
− *  for CD-ROM drives, and load appropriate drivers.
+
− */
+
−
+
−/** The maximum number of CD-ROM tracks on a disk */
+
−#define SDL_MAX_TRACKS  99
+
−
+
−/** @name Track Types
+
− *  The types of CD-ROM track possible
+
− */
+
−/*@{*/
+
−#define SDL_AUDIO_TRACK 0x00
+
−#define SDL_DATA_TRACK  0x04
+
−/*@}*/
+
−
+
−/** The possible states which a CD-ROM drive can be in. */
+
−typedef enum {
+
−    CD_TRAYEMPTY,
+
−    CD_STOPPED,
+
−    CD_PLAYING,
+
−    CD_PAUSED,
+
−    CD_ERROR = -1
+
−} CDstatus;
+
−
+
−/** Given a status, returns true if there's a disk in the drive */
+
−#define CD_INDRIVE(status)  ((int)(status) > 0)
+
−
+
−typedef struct SDL_CDtrack {
+
−    Uint8 id;       /**< Track number */
+
−    Uint8 type;     /**< Data or audio track */
+
−    Uint16 unused;
+
−    Uint32 length;      /**< Length, in frames, of this track */
+
−    Uint32 offset;      /**< Offset, in frames, from start of disk */
+
−} SDL_CDtrack;
+
−
+
−/** This structure is only current as of the last call to SDL_CDStatus() */
+
−typedef struct SDL_CD {
+
−    int id;         /**< Private drive identifier */
+
−    CDstatus status;    /**< Current drive status */
+
−
+
−    /** The rest of this structure is only valid if there's a CD in drive */
+
−        /*@{*/
+
−    int numtracks;      /**< Number of tracks on disk */
+
−    int cur_track;      /**< Current track position */
+
−    int cur_frame;      /**< Current frame offset within current track */
+
−    SDL_CDtrack track[SDL_MAX_TRACKS+1];
+
−        /*@}*/
+
−} SDL_CD;
+
−
+
−/** @name Frames / MSF Conversion Functions
+
− *  Conversion functions from frames to Minute/Second/Frames and vice versa
+
− */
+
−/*@{*/
+
−#define CD_FPS  75
+
−#define FRAMES_TO_MSF(f, M,S,F) {                   \
+
−    int value = f;                          \
+
−    *(F) = value%CD_FPS;                        \
+
−    value /= CD_FPS;                        \
+
−    *(S) = value%60;                        \
+
−    value /= 60;                            \
+
−    *(M) = value;                           \
+
−}
+
−#define MSF_TO_FRAMES(M, S, F)  ((M)*60*CD_FPS+(S)*CD_FPS+(F))
+
−/*@}*/
+
−
+
−/* CD-audio API functions: */
+
−
+
−/**
+
− *  Returns the number of CD-ROM drives on the system, or -1 if
+
− *  SDL_Init() has not been called with the SDL_INIT_CDROM flag.
+
− */
+
−extern DECLSPEC int SDLCALL SDL_CDNumDrives(void);
+
−
+
−/**
+
− *  Returns a human-readable, system-dependent identifier for the CD-ROM.
+
− *  Example:
+
− *   - "/dev/cdrom"
+
− *   - "E:"
+
− *   - "/dev/disk/ide/1/master"
+
− */
+
−extern DECLSPEC const char * SDLCALL SDL_CDName(int drive);
+
−
+
−/**
+
− *  Opens a CD-ROM drive for access.  It returns a drive handle on success,
+
− *  or NULL if the drive was invalid or busy.  This newly opened CD-ROM
+
− *  becomes the default CD used when other CD functions are passed a NULL
+
− *  CD-ROM handle.
+
− *  Drives are numbered starting with 0.  Drive 0 is the system default CD-ROM.
+
− */
+
−extern DECLSPEC SDL_CD * SDLCALL SDL_CDOpen(int drive);
+
−
+
−/**
+
− *  This function returns the current status of the given drive.
+
− *  If the drive has a CD in it, the table of contents of the CD and current
+
− *  play position of the CD will be stored in the SDL_CD structure.
+
− */
+
−extern DECLSPEC CDstatus SDLCALL SDL_CDStatus(SDL_CD *cdrom);
+
−
+
−/**
+
− *  Play the given CD starting at 'start_track' and 'start_frame' for 'ntracks'
+
− *  tracks and 'nframes' frames.  If both 'ntrack' and 'nframe' are 0, play
+
− *  until the end of the CD.  This function will skip data tracks.
+
− *  This function should only be called after calling SDL_CDStatus() to
+
− *  get track information about the CD.
+
− *  For example:
+
− *      @code
+
− *  // Play entire CD:
+
− *  if ( CD_INDRIVE(SDL_CDStatus(cdrom)) )
+
− *      SDL_CDPlayTracks(cdrom, 0, 0, 0, 0);
+
− *  // Play last track:
+
− *  if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) {
+
− *      SDL_CDPlayTracks(cdrom, cdrom->numtracks-1, 0, 0, 0);
+
− *  }
+
− *  // Play first and second track and 10 seconds of third track:
+
− *  if ( CD_INDRIVE(SDL_CDStatus(cdrom)) )
+
− *      SDL_CDPlayTracks(cdrom, 0, 0, 2, 10);
+
− *      @endcode
+
− *
+
− *  @return This function returns 0, or -1 if there was an error.
+
− */
+
−extern DECLSPEC int SDLCALL SDL_CDPlayTracks(SDL_CD *cdrom,
+
−        int start_track, int start_frame, int ntracks, int nframes);
+
−
+
−/**
+
− *  Play the given CD starting at 'start' frame for 'length' frames.
+
− *  @return It returns 0, or -1 if there was an error.
+
− */
+
−extern DECLSPEC int SDLCALL SDL_CDPlay(SDL_CD *cdrom, int start, int length);
+
−
+
−/** Pause play
+
− *  @return returns 0, or -1 on error
+
− */
+
−extern DECLSPEC int SDLCALL SDL_CDPause(SDL_CD *cdrom);
+
−
+
−/** Resume play
+
− *  @return returns 0, or -1 on error
+
− */
+
−extern DECLSPEC int SDLCALL SDL_CDResume(SDL_CD *cdrom);
+
−
+
−/** Stop play
+
− *  @return returns 0, or -1 on error
+
− */
+
−extern DECLSPEC int SDLCALL SDL_CDStop(SDL_CD *cdrom);
+
−
+
−/** Eject CD-ROM
+
− *  @return returns 0, or -1 on error
+
− */
+
−extern DECLSPEC int SDLCALL SDL_CDEject(SDL_CD *cdrom);
+
−
+
−/** Closes the handle for the CD-ROM drive */
+
−extern DECLSPEC void SDLCALL SDL_CDClose(SDL_CD *cdrom);
+
−
+
−
+
−/* Ends C function definitions when using C++ */
+
−#ifdef __cplusplus
+
−}
+
−#endif
+
−#include "close_code.h"
+
−
+
−#endif /* _SDL_video_h */