1/*
2Copyright (C) 1996-1997 Id Software, Inc.
3
4This program is free software; you can redistribute it and/or
5modify it under the terms of the GNU General Public License
6as published by the Free Software Foundation; either version 2
7of the License, or (at your option) any later version.
8
9This program is distributed in the hope that it will be useful,
10but WITHOUT ANY WARRANTY; without even the implied warranty of
11MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13See the included (GNU.txt) GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with this program; if not, write to the Free Software
17Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18
19*/
20// Quake is a trademark of Id Software, Inc., (c) 1996 Id Software, Inc. All
21// rights reserved.
22
23#include <stdio.h>
24#include <unistd.h>
25#include <stdlib.h>
26#include <sys/ioctl.h>
27#include <sys/file.h>
28#include <sys/types.h>
29#include <fcntl.h>
30#include <string.h>
31#include <time.h>
32#include <errno.h>
33
34#include <linux/cdrom.h>
35
36#include "quakedef.h"
37
38static qboolean cdValid = false;
39static qboolean	playing = false;
40static qboolean	wasPlaying = false;
41static qboolean	initialized = false;
42static qboolean	enabled = true;
43static qboolean playLooping = false;
44static float	cdvolume;
45static byte 	remap[100];
46static byte		playTrack;
47static byte		maxTrack;
48
49static int cdfile = -1;
50static char cd_dev[64] = "/dev/cdrom";
51
52static void CDAudio_Eject(void)
53{
54	if (cdfile == -1 || !enabled)
55		return; // no cd init'd
56
57	if ( ioctl(cdfile, CDROMEJECT) == -1 )
58		Con_DPrintf("ioctl cdromeject failed\n");
59}
60
61
62static void CDAudio_CloseDoor(void)
63{
64	if (cdfile == -1 || !enabled)
65		return; // no cd init'd
66
67	if ( ioctl(cdfile, CDROMCLOSETRAY) == -1 )
68		Con_DPrintf("ioctl cdromclosetray failed\n");
69}
70
71static int CDAudio_GetAudioDiskInfo(void)
72{
73	struct cdrom_tochdr tochdr;
74
75	cdValid = false;
76
77	if ( ioctl(cdfile, CDROMREADTOCHDR, &tochdr) == -1 )
78    {
79      Con_DPrintf("ioctl cdromreadtochdr failed\n");
80	  return -1;
81    }
82
83	if (tochdr.cdth_trk0 < 1)
84	{
85		Con_DPrintf("CDAudio: no music tracks\n");
86		return -1;
87	}
88
89	cdValid = true;
90	maxTrack = tochdr.cdth_trk1;
91
92	return 0;
93}
94
95
96void CDAudio_Play(byte track, qboolean looping)
97{
98	struct cdrom_tocentry entry;
99	struct cdrom_ti ti;
100
101	if (cdfile == -1 || !enabled)
102		return;
103
104	if (!cdValid)
105	{
106		CDAudio_GetAudioDiskInfo();
107		if (!cdValid)
108			return;
109	}
110
111	track = remap[track];
112
113	if (track < 1 || track > maxTrack)
114	{
115		Con_DPrintf("CDAudio: Bad track number %u.\n", track);
116		return;
117	}
118
119	// don't try to play a non-audio track
120	entry.cdte_track = track;
121	entry.cdte_format = CDROM_MSF;
122    if ( ioctl(cdfile, CDROMREADTOCENTRY, &entry) == -1 )
123	{
124		Con_DPrintf("ioctl cdromreadtocentry failed\n");
125		return;
126	}
127	if (entry.cdte_ctrl == CDROM_DATA_TRACK)
128	{
129		Con_Printf("CDAudio: track %i is not audio\n", track);
130		return;
131	}
132
133	if (playing)
134	{
135		if (playTrack == track)
136			return;
137		CDAudio_Stop();
138	}
139
140	ti.cdti_trk0 = track;
141	ti.cdti_trk1 = track;
142	ti.cdti_ind0 = 1;
143	ti.cdti_ind1 = 99;
144
145	if ( ioctl(cdfile, CDROMPLAYTRKIND, &ti) == -1 )
146    {
147		Con_DPrintf("ioctl cdromplaytrkind failed\n");
148		return;
149    }
150
151	if ( ioctl(cdfile, CDROMRESUME) == -1 )
152		Con_DPrintf("ioctl cdromresume failed\n");
153
154	playLooping = looping;
155	playTrack = track;
156	playing = true;
157
158	if (cdvolume == 0.0)
159		CDAudio_Pause ();
160}
161
162
163void CDAudio_Stop(void)
164{
165	if (cdfile == -1 || !enabled)
166		return;
167
168	if (!playing)
169		return;
170
171	if ( ioctl(cdfile, CDROMSTOP) == -1 )
172		Con_DPrintf("ioctl cdromstop failed (%d)\n", errno);
173
174	wasPlaying = false;
175	playing = false;
176}
177
178void CDAudio_Pause(void)
179{
180	if (cdfile == -1 || !enabled)
181		return;
182
183	if (!playing)
184		return;
185
186	if ( ioctl(cdfile, CDROMPAUSE) == -1 )
187		Con_DPrintf("ioctl cdrompause failed\n");
188
189	wasPlaying = playing;
190	playing = false;
191}
192
193
194void CDAudio_Resume(void)
195{
196	if (cdfile == -1 || !enabled)
197		return;
198
199	if (!cdValid)
200		return;
201
202	if (!wasPlaying)
203		return;
204
205	if ( ioctl(cdfile, CDROMRESUME) == -1 )
206		Con_DPrintf("ioctl cdromresume failed\n");
207	playing = true;
208}
209
210static void CD_f (void)
211{
212	char	*command;
213	int		ret;
214	int		n;
215
216	if (Cmd_Argc() < 2)
217		return;
218
219	command = Cmd_Argv (1);
220
221	if (Q_strcasecmp(command, "on") == 0)
222	{
223		enabled = true;
224		return;
225	}
226
227	if (Q_strcasecmp(command, "off") == 0)
228	{
229		if (playing)
230			CDAudio_Stop();
231		enabled = false;
232		return;
233	}
234
235	if (Q_strcasecmp(command, "reset") == 0)
236	{
237		enabled = true;
238		if (playing)
239			CDAudio_Stop();
240		for (n = 0; n < 100; n++)
241			remap[n] = n;
242		CDAudio_GetAudioDiskInfo();
243		return;
244	}
245
246	if (Q_strcasecmp(command, "remap") == 0)
247	{
248		ret = Cmd_Argc() - 2;
249		if (ret <= 0)
250		{
251			for (n = 1; n < 100; n++)
252				if (remap[n] != n)
253					Con_Printf("  %u -> %u\n", n, remap[n]);
254			return;
255		}
256		for (n = 1; n <= ret; n++)
257			remap[n] = Q_atoi(Cmd_Argv (n+1));
258		return;
259	}
260
261	if (Q_strcasecmp(command, "close") == 0)
262	{
263		CDAudio_CloseDoor();
264		return;
265	}
266
267	if (!cdValid)
268	{
269		CDAudio_GetAudioDiskInfo();
270		if (!cdValid)
271		{
272			Con_Printf("No CD in player.\n");
273			return;
274		}
275	}
276
277	if (Q_strcasecmp(command, "play") == 0)
278	{
279		CDAudio_Play((byte)Q_atoi(Cmd_Argv (2)), false);
280		return;
281	}
282
283	if (Q_strcasecmp(command, "loop") == 0)
284	{
285		CDAudio_Play((byte)Q_atoi(Cmd_Argv (2)), true);
286		return;
287	}
288
289	if (Q_strcasecmp(command, "stop") == 0)
290	{
291		CDAudio_Stop();
292		return;
293	}
294
295	if (Q_strcasecmp(command, "pause") == 0)
296	{
297		CDAudio_Pause();
298		return;
299	}
300
301	if (Q_strcasecmp(command, "resume") == 0)
302	{
303		CDAudio_Resume();
304		return;
305	}
306
307	if (Q_strcasecmp(command, "eject") == 0)
308	{
309		if (playing)
310			CDAudio_Stop();
311		CDAudio_Eject();
312		cdValid = false;
313		return;
314	}
315
316	if (Q_strcasecmp(command, "info") == 0)
317	{
318		Con_Printf("%u tracks\n", maxTrack);
319		if (playing)
320			Con_Printf("Currently %s track %u\n", playLooping ? "looping" : "playing", playTrack);
321		else if (wasPlaying)
322			Con_Printf("Paused %s track %u\n", playLooping ? "looping" : "playing", playTrack);
323		Con_Printf("Volume is %f\n", cdvolume);
324		return;
325	}
326}
327
328void CDAudio_Update(void)
329{
330	struct cdrom_subchnl subchnl;
331	static time_t lastchk;
332
333	if (!enabled)
334		return;
335
336	if (bgmvolume.value != cdvolume)
337	{
338		if (cdvolume)
339		{
340			Cvar_SetValue ("bgmvolume", 0.0);
341			cdvolume = bgmvolume.value;
342			CDAudio_Pause ();
343		}
344		else
345		{
346			Cvar_SetValue ("bgmvolume", 1.0);
347			cdvolume = bgmvolume.value;
348			CDAudio_Resume ();
349		}
350	}
351
352	if (playing && lastchk < time(NULL)) {
353		lastchk = time(NULL) + 2; //two seconds between chks
354		subchnl.cdsc_format = CDROM_MSF;
355		if (ioctl(cdfile, CDROMSUBCHNL, &subchnl) == -1 ) {
356			Con_DPrintf("ioctl cdromsubchnl failed\n");
357			playing = false;
358			return;
359		}
360		if (subchnl.cdsc_audiostatus != CDROM_AUDIO_PLAY &&
361			subchnl.cdsc_audiostatus != CDROM_AUDIO_PAUSED) {
362			playing = false;
363			if (playLooping)
364				CDAudio_Play(playTrack, true);
365		}
366	}
367}
368
369int CDAudio_Init(void)
370{
371	int i;
372
373#if 0
374	if (cls.state == ca_dedicated)
375		return -1;
376#endif
377
378	if (COM_CheckParm("-nocdaudio"))
379		return -1;
380
381	if ((i = COM_CheckParm("-cddev")) != 0 && i < com_argc - 1) {
382		strncpy(cd_dev, com_argv[i + 1], sizeof(cd_dev));
383		cd_dev[sizeof(cd_dev) - 1] = 0;
384	}
385
386	if ((cdfile = open(cd_dev, O_RDONLY)) == -1) {
387		Con_Printf("CDAudio_Init: open of \"%s\" failed (%i)\n", cd_dev, errno);
388		cdfile = -1;
389		return -1;
390	}
391
392	for (i = 0; i < 100; i++)
393		remap[i] = i;
394	initialized = true;
395	enabled = true;
396
397	if (CDAudio_GetAudioDiskInfo())
398	{
399		Con_Printf("CDAudio_Init: No CD in player.\n");
400		cdValid = false;
401	}
402
403	Cmd_AddCommand ("cd", CD_f);
404
405	Con_Printf("CD Audio Initialized\n");
406
407	return 0;
408}
409
410
411void CDAudio_Shutdown(void)
412{
413	if (!initialized)
414		return;
415	CDAudio_Stop();
416	close(cdfile);
417	cdfile = -1;
418}
419