584 lines
12 KiB
C
584 lines
12 KiB
C
/*
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* cd_sdl.c
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*
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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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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or (at
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* your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <SDL.h>
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#if !defined(SDL_INIT_CDROM)
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/* SDL dropped support for CD audio since v1.3.0 */
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#include "cd_null.c"
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#else /* defined(SDL_INIT_CDROM) */
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#include "q_defs.h"
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#include "cdaudio.h"
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static bool cdValid = false;
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static bool playing = false;
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static bool wasPlaying = false;
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static bool enabled = true;
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static bool 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 int32_t cd_dev = -1;
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static float old_cdvolume;
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static bool 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 PLATFORM_IS(LINUX)
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SDL_CDStop(cd_handle); /* see CDAudio_Stop() */
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#endif
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if(SDL_CDEject(cd_handle) < 0)
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Con_Printf("Unable to eject CD-ROM: %s\n", SDL_GetError());
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}
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static int32_t 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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int32_t CDAudio_Play(byte track, bool looping)
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{
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int32_t len_m, len_s, len_f;
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if(!cd_handle || !enabled)
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return -1;
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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 -1;
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}
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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 %" PRIi32 ".\n", track);
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return -1;
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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 %" PRIi32 " is not audio\n", track);
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return -1;
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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 0;
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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) < 0)
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{
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Con_Printf("CDAudio_Play: Unable to play track %" PRIi32 ": %s\n", track, SDL_GetError());
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return -1;
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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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/* 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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endOfTrack += 2.0;
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pausetime = -1.0;
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if(bgmvolume.value == 0) /* don't bother advancing */
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CDAudio_Pause();
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return 0;
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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 PLATFORM_IS(LINUX)
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/* Don't really stop, but just pause: On some devices, the CDROMSTOP
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* ioctl causes any followup ioctls to fail for a considerable time.
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* observed with a TSSTcorp CDW/DVD SH-M522C drive with TS05 and TS08
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* firmware versions running under a 2.6.27.25 kernel, and with a
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* Samsung DVD r/w drive running under 2.6.35.6 kernel.
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* Therefore, avoid dead stops if playback may be resumed shortly. */
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if(SDL_CDPause(cd_handle) < 0)
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Con_Printf("CDAudio_Stop: Unable to stop CD-ROM (%s)\n", SDL_GetError());
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#else
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if(SDL_CDStop(cd_handle) < 0)
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Con_Printf("CDAudio_Stop: Unable to stop CD-ROM (%s)\n", SDL_GetError());
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#endif
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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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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) < 0)
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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) < 0)
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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 int32_t get_first_audiotrk(void)
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{
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int32_t i;
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for(i = 0; i < cd_handle->numtracks; ++i)
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if(cd_handle->track[i].type != SDL_DATA_TRACK)
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return ++i;
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return 1;
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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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int32_t ret, n;
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if(Cmd_Argc() < 2)
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{
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Con_Printf("commands:");
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Con_Printf("on, off, reset, remap, \n");
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Con_Printf("play, stop, loop, pause, resume\n");
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Con_Printf("eject, info, next, prev\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(" %" PRIu32 " -> %" PRIu32 "\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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n = atoi(Cmd_Argv(2));
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if(n == 0)
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n = 1;
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CDAudio_Play((byte)n, 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, "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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int32_t current_min, current_sec, current_frame;
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int32_t length_min, length_sec, length_frame;
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Con_Printf("%" PRIu32 " tracks\n", cd_handle->numtracks);
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if(playing)
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Con_Printf("Currently %s track %" PRIu32 "\n", playLooping ? "looping" : "playing", playTrack);
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else if(wasPlaying)
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Con_Printf("Paused %s track %" PRIu32 "\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: %" PRIi32 ":%02" PRIi32 ".%02" PRIi32 " (of %" PRIi32 ":%02" PRIi32 ".%02" PRIi32 ")\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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if(q_strcasecmp(command, "next") == 0)
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{
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if(playTrack == cd_handle->numtracks)
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playTrack = get_first_audiotrk() - 1;
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CDAudio_Play(playTrack + 1, playLooping);
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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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if(playTrack == get_first_audiotrk())
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playTrack = cd_handle->numtracks + 1;
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CDAudio_Play(playTrack - 1, playLooping);
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return;
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}
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Con_Printf("cd: unknown command \"%s\"\n", command);
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}
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static bool 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 bool 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 bool CDAudio_SetVolume(float value)
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{
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if(!cd_handle || !enabled)
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return false;
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old_cdvolume = value;
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if(value == 0.0f)
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CDAudio_Pause();
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else
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CDAudio_Resume();
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if(!hw_vol_works)
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{
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return false;
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}
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else
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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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}
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void CDAudio_Update(void)
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{
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CDstatus curstat;
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/* static double lastchk;*/
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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.value);
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/* if (playing && realtime > lastchk)*/
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if(playing && realtime > endOfTrack)
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{
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/* lastchk = realtime + 2;*/ /* two seconds between chks */
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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 PLATFORM_IS(WINDOWS)
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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 !PLATFORM_IS(WINDOWS)
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int32_t 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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static char arg[64];
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q_snprintf(arg, sizeof(arg), "SDL_CDROM=%s", 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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int32_t CDAudio_Init(void)
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{
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int32_t i, sdl_num_drives;
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if(safemode || 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) < 0)
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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 %" PRIi32 " CD-ROM drive(s)\n", sdl_num_drives);
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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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|
|
hw_vol_works = CD_GetVolume(NULL); /* no SDL support at present. */
|
|
if(hw_vol_works)
|
|
hw_vol_works = CDAudio_SetVolume(bgmvolume.value);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void CDAudio_Shutdown(void)
|
|
{
|
|
if(!cd_handle)
|
|
return;
|
|
CDAudio_Stop();
|
|
if(hw_vol_works)
|
|
CD_SetVolume(NULL); /* no SDL support at present. */
|
|
#if PLATFORM_IS(LINUX)
|
|
SDL_CDStop(cd_handle); /* see CDAudio_Stop() */
|
|
#endif
|
|
SDL_CDClose(cd_handle);
|
|
cd_handle = NULL;
|
|
cd_dev = -1;
|
|
SDL_QuitSubSystem(SDL_INIT_CDROM);
|
|
}
|
|
|
|
#endif /* defined(SDL_INIT_CDROM) */
|
|
|