19682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* 29682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL - Simple DirectMedia Layer 39682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Copyright (C) 1997-2012 Sam Lantinga 49682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 59682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is free software; you can redistribute it and/or 69682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall modify it under the terms of the GNU Lesser General Public 79682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License as published by the Free Software Foundation; either 89682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall version 2.1 of the License, or (at your option) any later version. 99682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall This library is distributed in the hope that it will be useful, 119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall but WITHOUT ANY WARRANTY; without even the implied warranty of 129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Lesser General Public License for more details. 149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall You should have received a copy of the GNU Lesser General Public 169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall License along with this library; if not, write to the Free Software 179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Sam Lantinga 209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall slouken@libsdl.org 219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall*/ 229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** 249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @file SDL_cdrom.h 259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * This is the CD-audio control API for Simple DirectMedia Layer 269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifndef _SDL_cdrom_h 299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define _SDL_cdrom_h 309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_stdinc.h" 329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "SDL_error.h" 339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "begin_code.h" 359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Set up for C function definitions, even when using C++ */ 369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef __cplusplus 379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern "C" { 389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** 419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @file SDL_cdrom.h 429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * In order to use these functions, SDL_Init() must have been called 439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * with the SDL_INIT_CDROM flag. This causes SDL to scan the system 449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * for CD-ROM drives, and load appropriate drivers. 459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** The maximum number of CD-ROM tracks on a disk */ 489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define SDL_MAX_TRACKS 99 499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** @name Track Types 519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * The types of CD-ROM track possible 529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/*@{*/ 549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define SDL_AUDIO_TRACK 0x00 559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define SDL_DATA_TRACK 0x04 569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/*@}*/ 579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** The possible states which a CD-ROM drive can be in. */ 599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Halltypedef enum { 609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall CD_TRAYEMPTY, 619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall CD_STOPPED, 629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall CD_PLAYING, 639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall CD_PAUSED, 649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall CD_ERROR = -1 659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} CDstatus; 669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** Given a status, returns true if there's a disk in the drive */ 689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define CD_INDRIVE(status) ((int)(status) > 0) 699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Halltypedef struct SDL_CDtrack { 719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Uint8 id; /**< Track number */ 729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Uint8 type; /**< Data or audio track */ 739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Uint16 unused; 749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Uint32 length; /**< Length, in frames, of this track */ 759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall Uint32 offset; /**< Offset, in frames, from start of disk */ 769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} SDL_CDtrack; 779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** This structure is only current as of the last call to SDL_CDStatus() */ 799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Halltypedef struct SDL_CD { 809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int id; /**< Private drive identifier */ 819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall CDstatus status; /**< Current drive status */ 829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /** The rest of this structure is only valid if there's a CD in drive */ 849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /*@{*/ 859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int numtracks; /**< Number of tracks on disk */ 869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int cur_track; /**< Current track position */ 879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int cur_frame; /**< Current frame offset within current track */ 889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall SDL_CDtrack track[SDL_MAX_TRACKS+1]; 899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall /*@}*/ 909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} SDL_CD; 919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** @name Frames / MSF Conversion Functions 939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * Conversion functions from frames to Minute/Second/Frames and vice versa 949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/*@{*/ 969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define CD_FPS 75 979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define FRAMES_TO_MSF(f, M,S,F) { \ 989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int value = f; \ 999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall *(F) = value%CD_FPS; \ 1009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall value /= CD_FPS; \ 1019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall *(S) = value%60; \ 1029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall value /= 60; \ 1039682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall *(M) = value; \ 1049682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1059682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#define MSF_TO_FRAMES(M, S, F) ((M)*60*CD_FPS+(S)*CD_FPS+(F)) 1069682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/*@}*/ 1079682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1089682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* CD-audio API functions: */ 1099682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1109682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** 1119682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * Returns the number of CD-ROM drives on the system, or -1 if 1129682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * SDL_Init() has not been called with the SDL_INIT_CDROM flag. 1139682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1149682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC int SDLCALL SDL_CDNumDrives(void); 1159682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1169682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** 1179682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * Returns a human-readable, system-dependent identifier for the CD-ROM. 1189682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * Example: 1199682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * - "/dev/cdrom" 1209682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * - "E:" 1219682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * - "/dev/disk/ide/1/master" 1229682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1239682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC const char * SDLCALL SDL_CDName(int drive); 1249682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1259682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** 1269682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * Opens a CD-ROM drive for access. It returns a drive handle on success, 1279682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * or NULL if the drive was invalid or busy. This newly opened CD-ROM 1289682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * becomes the default CD used when other CD functions are passed a NULL 1299682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * CD-ROM handle. 1309682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * Drives are numbered starting with 0. Drive 0 is the system default CD-ROM. 1319682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1329682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC SDL_CD * SDLCALL SDL_CDOpen(int drive); 1339682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1349682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** 1359682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * This function returns the current status of the given drive. 1369682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * If the drive has a CD in it, the table of contents of the CD and current 1379682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * play position of the CD will be stored in the SDL_CD structure. 1389682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1399682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC CDstatus SDLCALL SDL_CDStatus(SDL_CD *cdrom); 1409682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1419682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** 1429682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * Play the given CD starting at 'start_track' and 'start_frame' for 'ntracks' 1439682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * tracks and 'nframes' frames. If both 'ntrack' and 'nframe' are 0, play 1449682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * until the end of the CD. This function will skip data tracks. 1459682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * This function should only be called after calling SDL_CDStatus() to 1469682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * get track information about the CD. 1479682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * For example: 1489682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @code 1499682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * // Play entire CD: 1509682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) 1519682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * SDL_CDPlayTracks(cdrom, 0, 0, 0, 0); 1529682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * // Play last track: 1539682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) { 1549682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * SDL_CDPlayTracks(cdrom, cdrom->numtracks-1, 0, 0, 0); 1559682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * } 1569682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * // Play first and second track and 10 seconds of third track: 1579682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * if ( CD_INDRIVE(SDL_CDStatus(cdrom)) ) 1589682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * SDL_CDPlayTracks(cdrom, 0, 0, 2, 10); 1599682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @endcode 1609682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * 1619682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @return This function returns 0, or -1 if there was an error. 1629682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1639682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC int SDLCALL SDL_CDPlayTracks(SDL_CD *cdrom, 1649682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall int start_track, int start_frame, int ntracks, int nframes); 1659682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1669682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** 1679682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * Play the given CD starting at 'start' frame for 'length' frames. 1689682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @return It returns 0, or -1 if there was an error. 1699682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1709682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC int SDLCALL SDL_CDPlay(SDL_CD *cdrom, int start, int length); 1719682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1729682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** Pause play 1739682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @return returns 0, or -1 on error 1749682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1759682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC int SDLCALL SDL_CDPause(SDL_CD *cdrom); 1769682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1779682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** Resume play 1789682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @return returns 0, or -1 on error 1799682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1809682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC int SDLCALL SDL_CDResume(SDL_CD *cdrom); 1819682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1829682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** Stop play 1839682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @return returns 0, or -1 on error 1849682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1859682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC int SDLCALL SDL_CDStop(SDL_CD *cdrom); 1869682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1879682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** Eject CD-ROM 1889682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall * @return returns 0, or -1 on error 1899682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall */ 1909682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC int SDLCALL SDL_CDEject(SDL_CD *cdrom); 1919682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1929682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/** Closes the handle for the CD-ROM drive */ 1939682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hallextern DECLSPEC void SDLCALL SDL_CDClose(SDL_CD *cdrom); 1949682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1959682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 1969682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall/* Ends C function definitions when using C++ */ 1979682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#ifdef __cplusplus 1989682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall} 1999682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif 2009682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#include "close_code.h" 2019682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall 2029682c8870b8ff5e4ac2e4c70b759f791c6f38c1fJesse Hall#endif /* _SDL_video_h */ 203