599 lines
12 KiB
C
599 lines
12 KiB
C
/*
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cd_sdl.c
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$Id: cd_sdl.c,v 1.19 2010/01/27 16:22:42 sezero Exp $
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Copyright (C) 1996-1997 Id Software, Inc.
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Taken from the Twilight project with modifications
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to make it work with Hexen II: Hammer of Thyrion.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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51 Franklin St, Fifth Floor,
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Boston, MA 02110-1301 USA
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*/
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#include "SDL.h"
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#ifndef SDL_INIT_CDROM
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/* SDL dropped support for
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cd audio since v1.3.0 */
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#warning SDL CDAudio support disabled
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#include "cd_null.c"
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#else /* SDL_INIT_CDROM */
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#include "quakedef.h"
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static qboolean cdValid = false;
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static qboolean playing = false;
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static qboolean wasPlaying = false;
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static qboolean enabled = true;
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static qboolean playLooping = false;
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static byte remap[100];
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static byte playTrack;
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static double endOfTrack = -1.0, pausetime = -1.0;
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static SDL_CD *cd_handle;
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static int cd_dev = -1;
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static float old_cdvolume;
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static qboolean hw_vol_works = true;
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static void CDAudio_Eject(void)
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{
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if (!cd_handle || !enabled)
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return;
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if (SDL_CDEject(cd_handle) == -1)
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Con_Printf ("Unable to eject CD-ROM: %s\n", SDL_GetError ());
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}
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static int CDAudio_GetAudioDiskInfo(void)
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{
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cdValid = false;
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if (!cd_handle)
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return -1;
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if ( ! CD_INDRIVE(SDL_CDStatus(cd_handle)) )
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return -1;
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cdValid = true;
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return 0;
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}
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void CDAudio_Play(byte track, qboolean looping)
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{
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int len_m, len_s, len_f;
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if (!cd_handle || !enabled)
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return;
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if (!cdValid)
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{
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CDAudio_GetAudioDiskInfo();
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if (!cdValid)
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return;
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}
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if (track == 0)
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track = 1;
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track = remap[track];
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if (track < 1 || track > cd_handle->numtracks)
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{
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Con_Printf ("CDAudio_Play: Bad track number %d.\n", track);
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return;
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}
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if (cd_handle->track[track-1].type == SDL_DATA_TRACK)
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{
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Con_Printf ("CDAudio_Play: track %d is not audio\n", track);
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return;
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}
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if (playing)
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{
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if (playTrack == track)
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return;
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CDAudio_Stop ();
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}
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if (SDL_CDPlay(cd_handle, cd_handle->track[track-1].offset, cd_handle->track[track-1].length) == -1)
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{
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// ok, check for status now
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int cd_status = SDL_CDStatus(cd_handle);
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if (cd_status > 0)
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Con_Printf ("CDAudio_Play: Unable to play %d: %s\n", track, SDL_GetError ());
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return;
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}
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playLooping = looping;
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playTrack = track;
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playing = true;
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FRAMES_TO_MSF(cd_handle->track[track-1].length, &len_m, &len_s, &len_f);
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endOfTrack = realtime + ((double)len_m * 60.0) + (double)len_s + (double)len_f / (double)CD_FPS;
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/*
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* Add the pregap for the next track. This means that disc-at-once CDs
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* won't loop smoothly, but they wouldn't anyway so it doesn't really
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* matter. SDL doesn't give us pregap information anyway, so you'll
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* just have to live with it.
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*/
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endOfTrack += 2.0;
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pausetime = -1.0;
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if (!hw_vol_works && bgmvolume.value == 0.0)
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CDAudio_Pause ();
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}
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void CDAudio_Stop(void)
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{
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if (!cd_handle || !enabled)
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return;
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if (!playing)
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return;
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if (SDL_CDStop(cd_handle) == -1)
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Con_Printf ("CDAudio_Stop: Unable to stop CD-ROM (%s)\n", SDL_GetError());
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wasPlaying = false;
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playing = false;
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pausetime = -1.0;
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endOfTrack = -1.0;
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}
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static void CDAudio_Next(void)
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{
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byte track;
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if (!cd_handle || !enabled)
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return;
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if (!playing)
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return;
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track = playTrack + 1; /* cd_handle->track[cd_handle->cur_track].id + 1; */
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if (track > cd_handle->numtracks)
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track = 1;
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CDAudio_Play (track, playLooping);
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}
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static void CDAudio_Prev(void)
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{
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byte track;
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if (!cd_handle || !enabled)
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return;
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if (!playing)
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return;
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track = playTrack - 1;
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if (track < 1)
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track = cd_handle->numtracks;
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CDAudio_Play (track, playLooping);
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}
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void CDAudio_Pause(void)
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{
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if (!cd_handle || !enabled)
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return;
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if (!playing)
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return;
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if (SDL_CDPause(cd_handle) == -1)
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Con_Printf ("Unable to pause CD-ROM: %s\n", SDL_GetError());
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wasPlaying = playing;
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playing = false;
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pausetime = realtime;
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}
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void CDAudio_Resume(void)
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{
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if (!cd_handle || !enabled)
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return;
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if (!cdValid)
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return;
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if (!wasPlaying)
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return;
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if (SDL_CDResume(cd_handle) == -1)
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Con_Printf ("Unable to resume CD-ROM: %s\n", SDL_GetError());
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playing = true;
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endOfTrack += realtime - pausetime;
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pausetime = -1.0;
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}
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static void CD_f (void)
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{
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const char *command;
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int ret, n;
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if (Cmd_Argc() < 2)
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{
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Con_Printf("commands:\n");
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Con_Printf(" on, off, reset, remap, \n");
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Con_Printf(" play, stop, next, prev, loop,\n");
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Con_Printf(" pause, resume, eject, info\n");
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return;
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}
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command = Cmd_Argv (1);
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if (Q_strcasecmp(command, "on") == 0)
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{
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enabled = true;
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return;
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}
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if (Q_strcasecmp(command, "off") == 0)
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{
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if (playing)
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CDAudio_Stop();
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enabled = false;
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return;
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}
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if (Q_strcasecmp(command, "reset") == 0)
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{
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enabled = true;
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if (playing)
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CDAudio_Stop();
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for (n = 0; n < 100; n++)
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remap[n] = n;
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CDAudio_GetAudioDiskInfo();
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return;
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}
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if (Q_strcasecmp(command, "remap") == 0)
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{
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ret = Cmd_Argc () - 2;
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if (ret <= 0)
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{
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for (n = 1; n < 100; n++)
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if (remap[n] != n)
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Con_Printf (" %u -> %u\n", n, remap[n]);
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return;
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}
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for (n = 1; n <= ret; n++)
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remap[n] = atoi(Cmd_Argv (n + 1));
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return;
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}
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if (!cdValid)
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{
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CDAudio_GetAudioDiskInfo ();
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if (!cdValid)
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{
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Con_Printf("No CD in player.\n");
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return;
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}
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}
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if (Q_strcasecmp(command, "play") == 0)
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{
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CDAudio_Play((byte)atoi(Cmd_Argv (2)), false);
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return;
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}
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if (Q_strcasecmp(command, "loop") == 0)
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{
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CDAudio_Play((byte)atoi(Cmd_Argv (2)), true);
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return;
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}
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if (Q_strcasecmp(command, "stop") == 0)
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{
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CDAudio_Stop();
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return;
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}
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if (Q_strcasecmp(command, "pause") == 0)
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{
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CDAudio_Pause();
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return;
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}
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if (Q_strcasecmp(command, "resume") == 0)
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{
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CDAudio_Resume();
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return;
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}
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if (Q_strcasecmp(command, "next") == 0)
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{
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CDAudio_Next();
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return;
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}
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if (Q_strcasecmp(command, "prev") == 0)
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{
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CDAudio_Prev();
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return;
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}
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if (Q_strcasecmp(command, "eject") == 0)
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{
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if (playing)
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CDAudio_Stop();
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CDAudio_Eject();
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cdValid = false;
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return;
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}
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if (Q_strcasecmp(command, "info") == 0)
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{
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int current_min, current_sec, current_frame;
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int length_min, length_sec, length_frame;
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Con_Printf ("%u tracks\n", cd_handle->numtracks);
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if (playing)
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Con_Printf ("Currently %s track %u\n", playLooping ? "looping" : "playing", playTrack);
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else if (wasPlaying)
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Con_Printf ("Paused %s track %u\n", playLooping ? "looping" : "playing", playTrack);
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if (playing || wasPlaying)
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{
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SDL_CDStatus(cd_handle);
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FRAMES_TO_MSF(cd_handle->cur_frame, ¤t_min, ¤t_sec, ¤t_frame);
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FRAMES_TO_MSF(cd_handle->track[playTrack-1].length, &length_min, &length_sec, &length_frame);
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Con_Printf ("Current position: %d:%02d.%02d (of %d:%02d.%02d)\n",
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current_min, current_sec, current_frame * 60 / CD_FPS,
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length_min, length_sec, length_frame * 60 / CD_FPS);
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}
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Con_Printf ("Volume is %f\n", bgmvolume.value);
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return;
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}
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Con_Printf ("cd: no such command. Use \"cd\" for help.\n");
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}
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static qboolean CD_GetVolume (void *unused)
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{
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/* FIXME: write proper code in here when SDL
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supports cdrom volume control some day. */
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return false;
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}
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static qboolean CD_SetVolume (void *unused)
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{
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/* FIXME: write proper code in here when SDL
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supports cdrom volume control some day. */
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return false;
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}
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static qboolean CDAudio_SetVolume (cvar_t *var)
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{
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if (!cd_handle || !enabled)
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return false;
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if (var->value < 0.0)
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Cvar_SetValue (var->name, 0.0);
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else if (var->value > 1.0)
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Cvar_SetValue (var->name, 1.0);
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old_cdvolume = var->value;
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if (hw_vol_works)
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{
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/* FIXME: write proper code in here when SDL
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supports cdrom volume control some day. */
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return CD_SetVolume (NULL);
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}
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else
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{
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if (old_cdvolume == 0.0)
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CDAudio_Pause ();
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else
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CDAudio_Resume();
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return false;
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}
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}
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void CDAudio_Update(void)
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{
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CDstatus curstat;
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if (!cd_handle || !enabled)
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return;
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if (old_cdvolume != bgmvolume.value)
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CDAudio_SetVolume (&bgmvolume);
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if (playing && realtime > endOfTrack)
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{
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// curstat = cd_handle->status;
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curstat = SDL_CDStatus(cd_handle);
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if (curstat != CD_PLAYING && curstat != CD_PAUSED)
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{
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playing = false;
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endOfTrack = -1.0;
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if (playLooping)
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CDAudio_Play(playTrack, true);
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}
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}
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}
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static const char *get_cddev_arg (const char *arg)
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{
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#if defined(_WIN32)
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/* arg should be like "D:\", make sure it is so,
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* but tolerate args like "D" or "D:", as well. */
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static char drive[4];
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if (!arg || ! *arg)
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return NULL;
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if (arg[1] != '\0')
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{
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if (arg[1] != ':')
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return NULL;
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if (arg[2] != '\0')
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{
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if (arg[2] != '\\' &&
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arg[2] != '/')
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return NULL;
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if (arg[3] != '\0')
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return NULL;
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}
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}
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if (*arg >= 'A' && *arg <= 'Z')
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{
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drive[0] = *arg;
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drive[1] = ':';
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drive[2] = '\\';
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drive[3] = '\0';
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return drive;
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}
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else if (*arg >= 'a' && *arg <= 'z')
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{
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/* make it uppercase for SDL */
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drive[0] = *arg | ('a' - 'A');
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drive[1] = ':';
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drive[2] = '\\';
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drive[3] = '\0';
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return drive;
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}
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return NULL;
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#else
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if (!arg || ! *arg)
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return NULL;
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return arg;
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#endif
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}
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static void export_cddev_arg (void)
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{
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/* Bad ugly hack to workaround SDL's cdrom device detection.
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* not needed for windows due to the way SDL_cdrom works. */
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#if !defined(_WIN32)
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int i = COM_CheckParm("-cddev");
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if (i != 0 && i < com_argc - 1 && com_argv[i+1][0] != '\0')
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{
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char arg[64];
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q_snprintf("SDL_CDROM=%s", sizeof(arg), com_argv[i+1]);
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putenv(arg);
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}
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#endif
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}
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int CDAudio_Init(void)
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{
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int i, sdl_num_drives;
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if (COM_CheckParm("-nocdaudio"))
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return -1;
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export_cddev_arg ();
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if (SDL_InitSubSystem(SDL_INIT_CDROM) == -1)
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{
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Con_Printf("Couldn't init SDL cdrom: %s\n", SDL_GetError());
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return -1;
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}
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sdl_num_drives = SDL_CDNumDrives ();
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Con_Printf ("SDL detected %d CD-ROM drive%c\n", sdl_num_drives,
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sdl_num_drives == 1 ? ' ' : 's');
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if (sdl_num_drives < 1)
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return -1;
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if ((i = COM_CheckParm("-cddev")) != 0 && i < com_argc - 1)
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{
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const char *userdev = get_cddev_arg(com_argv[i+1]);
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if (!userdev)
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{
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Con_Printf("Invalid argument to -cddev\n");
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return -1;
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}
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for (i = 0; i < sdl_num_drives; i++)
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{
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if (!Q_strcasecmp(SDL_CDName(i), userdev))
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{
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cd_dev = i;
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break;
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}
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}
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if (cd_dev == -1)
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{
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Con_Printf("SDL couldn't find cdrom device %s\n", userdev);
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return -1;
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}
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}
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if (cd_dev == -1)
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cd_dev = 0; // default drive
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cd_handle = SDL_CDOpen(cd_dev);
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if (!cd_handle)
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{
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Con_Printf ("CDAudio_Init: Unable to open CD-ROM drive %s (%s)\n",
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SDL_CDName(cd_dev), SDL_GetError());
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return -1;
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}
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for (i = 0; i < 100; i++)
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remap[i] = i;
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enabled = true;
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old_cdvolume = bgmvolume.value;
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Con_Printf("CDAudio initialized (SDL, using %s)\n", SDL_CDName(cd_dev));
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if (CDAudio_GetAudioDiskInfo())
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{
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Con_Printf("CDAudio_Init: No CD in drive\n");
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cdValid = false;
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}
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Cmd_AddCommand ("cd", CD_f);
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// cd hardware volume: no SDL support at present.
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hw_vol_works = CD_GetVolume (NULL);
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if (hw_vol_works)
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hw_vol_works = CDAudio_SetVolume (&bgmvolume);
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return 0;
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}
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void CDAudio_Shutdown(void)
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{
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if (!cd_handle)
|
|
return;
|
|
CDAudio_Stop();
|
|
// cd hardware volume: no SDL support at present.
|
|
// if (hw_vol_works)
|
|
// CD_SetVolume (NULL);
|
|
SDL_CDClose(cd_handle);
|
|
cd_handle = NULL;
|
|
cd_dev = -1;
|
|
SDL_QuitSubSystem(SDL_INIT_CDROM);
|
|
}
|
|
|
|
#endif /* SDL_INIT_CDROM */
|
|
|