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/*
Irix CD-ROM interface for libcdaudio
Copyright (C)1999 David Rose <David.R.Rose@disney.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
/* The implementation of the CDAudio functions under Irix are
sufficiently different from everything else that it warrented created
a totally separate version of this file. */
/* We assume that an Irix compiler will always be ANSI, so we don't
bother to mess around with the K&R-compatibility stuff in here. */
#ifdef IRIX_CDAUDIO
#include "cdaudio.h"
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <malloc.h>
#include <string.h>
#include <sys/types.h>
#include <dmedia/cdaudio.h>
/* Eliminated collisions with some macros defined in
dmedia/cdaudio.h. */
#undef cd_open
#undef cd_play
#undef cd_play_track
#undef cd_play_track_abs
#undef cd_play_abs
#undef cd_readda
#undef cd_seek
#undef cd_seek_track
#undef cd_stop
#undef cd_eject
#undef cd_close
#undef cd_get_status
#undef cd_toggle_pause
#undef cd_get_track_info
#undef cd_get_volume
#undef cd_set_volume
/* We have to map ints to CDPLAYER pointers, since the libcdaudio
specs require an int cd device handle, but the Irix library gives
us CDPLAYER *. */
typedef struct {
CDPLAYER *p;
struct disc_info *disc;
} CDInfo;
#define MAXOPEN_CDDEVS 10
static CDInfo cddevs[MAXOPEN_CDDEVS];
/* Lock the disc in the tray and fill in its disc information. This
is an internal function. */
static int
get_info(int cd_desc)
{
struct disc_info *disc;
CDSTATUS status;
CDTRACKINFO track;
int num_tracks;
int i;
assert(cd_desc >= 0 && cd_desc < MAXOPEN_CDDEVS);
assert(cddevs[cd_desc].p != NULL);
if (cddevs[cd_desc].disc != NULL) {
/* The disc information is already available. Simply return. */
return 1;
}
disc = (struct disc_info *)malloc(sizeof(struct disc_info));
CDpreventremoval(cddevs[cd_desc].p);
if (!CDgetstatus(cddevs[cd_desc].p, &status)) {
free(disc);
return 0;
}
num_tracks = status.last - status.first + 1;
disc->disc_present = (status.state != CD_NODISC);
switch (status.state) {
case CD_READY:
disc->disc_mode = CDAUDIO_COMPLETED;
break;
case CD_PLAYING:
disc->disc_mode = CDAUDIO_PLAYING;
break;
case CD_PAUSED:
case CD_STILL:
disc->disc_mode = CDAUDIO_PAUSED;
break;
case CD_NODISC:
case CD_ERROR:
case CD_CDROM:
default:
disc->disc_mode = CDAUDIO_NOSTATUS;
num_tracks = 0;
break;
}
disc->disc_track_time.minutes = status.min;
disc->disc_track_time.seconds = status.sec;
disc->disc_time.minutes = status.abs_min;
disc->disc_time.seconds = status.abs_sec;
disc->disc_length.minutes = status.total_min;
disc->disc_length.seconds = status.total_sec;
/*
disc->disc_current_frame =
CDmsftoframe(status.abs_min, status.abs_sec, status.abs_frame);
*/
disc->disc_current_track = status.track;
disc->disc_first_track = status.first;
disc->disc_total_tracks = num_tracks;
/* Now fill in all the per-track data. */
for (i = 0; i < num_tracks; i++) {
if (CDgettrackinfo(cddevs[cd_desc].p, i + status.first, &track)) {
disc->disc_track[i].track_length.minutes = track.total_min;
disc->disc_track[i].track_length.seconds = track.total_sec;
disc->disc_track[i].track_pos.minutes = track.start_min;
disc->disc_track[i].track_pos.seconds = track.start_sec;
disc->disc_track[i].track_pos.frames = track.start_frame;
disc->disc_track[i].track_lba =
(track.start_min * 60 + track.start_sec) * 75 +
track.start_frame - 150;
CDmsftoframe(track.start_min, track.start_sec, track.start_frame);
disc->disc_track[i].track_type = CDAUDIO_TRACK_AUDIO;
} else {
/* Some error reading the track. */
free(disc);
return 0;
}
}
cddevs[cd_desc].disc = disc;
return 1;
}
/* Return the track number that contains the indicated frame on the
disc. This is an internal function. */
static int
find_track(int cd_desc, int frame) {
int i;
struct disc_info *disc;
get_info(cd_desc);
disc = cddevs[cd_desc].disc;
assert(disc != NULL);
for (i = 1; i < disc->disc_total_tracks; i++) {
if (disc->disc_track[i].track_pos.minutes * 4500 +
disc->disc_track[i].track_pos.seconds * 75 +
disc->disc_track[i].track_pos.frames > frame) {
return i;
}
}
return disc->disc_total_tracks;
}
/* Return the version of libcdaudio */
void
cd_version(char *buffer, int len)
{
snprintf(buffer, len, "%s version %s", PACKAGE, VERSION);
}
/* Initialize the CD-ROM for playing audio CDs */
int
cd_init_device(char *device_name)
{
/* First, find the next available cd device handle. This isn't
thread safe. */
int next_cddev = 0;
while (next_cddev < MAXOPEN_CDDEVS && cddevs[next_cddev].p != NULL) {
next_cddev++;
}
if (next_cddev >= MAXOPEN_CDDEVS) {
/* No available devices. */
return -1;
}
if (strcmp(device_name, "default") == 0) {
device_name = NULL;
}
cddevs[next_cddev].p = CDopen(device_name, "r");
if (cddevs[next_cddev].p == NULL) {
/* Failure opening. */
return -1;
}
return next_cddev;
}
/* Close a device handle and free its resources. */
int
cd_finish(int cd_desc)
{
assert(cd_desc >= 0 && cd_desc < MAXOPEN_CDDEVS);
assert(cddevs[cd_desc].p != NULL);
if (cddevs[cd_desc].disc != NULL) {
free(cddevs[cd_desc].disc);
cddevs[cd_desc].disc = NULL;
}
CDclose(cddevs[cd_desc].p);
cddevs[cd_desc].p = NULL;
return 0;
}
/* Update a CD status structure. */
int
cd_stat(int cd_desc, struct disc_info *disc)
{
if (cddevs[cd_desc].disc != NULL) {
free(cddevs[cd_desc].disc);
cddevs[cd_desc].disc = NULL;
}
if (!get_info(cd_desc)) {
/* We couldn't read the disc information for some reason. */
return -1;
}
memcpy(disc, cddevs[cd_desc].disc, sizeof(struct disc_info));
return 0;
}
/* Play frames from CD */
int
cd_play_frames(int cd_desc, int startframe, int endframe)
{
int starttrack, endtrack;
struct track_info *track;
if (!get_info(cd_desc)) {
/* We couldn't read the disc information for some reason. */
return -1;
}
/* Get the track that contains the indicating starting frame and
ending frame. */
starttrack = find_track(cd_desc, startframe);
endtrack = find_track(cd_desc, endframe);
track = &cddevs[cd_desc].disc->disc_track[starttrack - 1];
return cd_play_track_pos(cd_desc, starttrack, endtrack,
startframe - (track->track_pos.minutes * 4500 +
track->track_pos.seconds * 75 +
track->track_pos.frames));
}
/* Play starttrack at position pos to endtrack */
int
cd_play_track_pos(int cd_desc, int starttrack, int endtrack, int startpos)
{
int m, s, f;
if (!get_info(cd_desc)) {
/* We couldn't read the disc information for some reason. */
return -1;
}
/* If we're playing strictly within a track, use CDplaytrackabs.
Otherwise, use CDplayabs to play till the end of the CD. Neither
is exactly right, but we do the best we can. */
if (starttrack == endtrack) {
CDframetomsf(startpos, &m, &s, &f);
if (CDplaytrackabs(cddevs[cd_desc].p, starttrack, m, s, f, 1)) {
return 0;
}
} else {
CDframetomsf(startpos +
cddevs[cd_desc].disc->disc_track[starttrack - 1]
.track_pos.minutes * 4500 +
cddevs[cd_desc].disc->disc_track[starttrack - 1]
.track_pos.seconds * 75 +
cddevs[cd_desc].disc->disc_track[starttrack - 1]
.track_pos.frames,
&m, &s, &f);
if (CDplayabs(cddevs[cd_desc].p, m, s, f, 1)) {
return 0;
}
}
return -1;
}
/* Play starttrack to endtrack */
int
cd_play_track(int cd_desc, int starttrack, int endtrack)
{
return cd_play_track_pos(cd_desc, starttrack, endtrack, 0);
}
/* Play starttrack at position pos to end of CD */
int
cd_play_pos(int cd_desc, int track, int startpos)
{
return cd_play_track_pos(cd_desc, track,
cddevs[cd_desc].disc->disc_total_tracks - 1,
startpos);
}
/* Play starttrack to end of CD */
int
cd_play(int cd_desc, int track)
{
return cd_play_pos(cd_desc, track, 0);
}
/* Stop the CD, if it is playing */
int
cd_stop(int cd_desc)
{
assert(cd_desc >= 0 && cd_desc < MAXOPEN_CDDEVS);
assert(cddevs[cd_desc].p != NULL);
if (CDstop(cddevs[cd_desc].p)) {
return 0;
}
return -1;
}
/* Pause the CD */
int
cd_pause(int cd_desc)
{
assert(cd_desc >= 0 && cd_desc < MAXOPEN_CDDEVS);
assert(cddevs[cd_desc].p != NULL);
if (CDtogglepause(cddevs[cd_desc].p)) {
return 0;
}
return -1;
}
/* Resume playing */
int
cd_resume(int cd_desc)
{
assert(cd_desc >= 0 && cd_desc < MAXOPEN_CDDEVS);
assert(cddevs[cd_desc].p != NULL);
if (CDtogglepause(cddevs[cd_desc].p)) {
return 0;
}
return -1;
}
/* Eject the tray */
int
cd_eject(int cd_desc)
{
assert(cd_desc >= 0 && cd_desc < MAXOPEN_CDDEVS);
assert(cddevs[cd_desc].p != NULL);
CDallowremoval(cddevs[cd_desc].p);
if (cddevs[cd_desc].disc != NULL) {
free(cddevs[cd_desc].disc);
cddevs[cd_desc].disc = NULL;
}
if (CDeject(cddevs[cd_desc].p)) {
return 0;
}
return -1;
}
/* Close the tray */
int
cd_close(int cd_desc)
{
errno = ENOSYS;
return -1;
}
/* Return the current volume setting */
int
cd_get_volume(int cd_desc, struct disc_volume *vol)
{
CDVOLUME volume;
assert(cd_desc >= 0 && cd_desc < MAXOPEN_CDDEVS);
assert(cddevs[cd_desc].p != NULL);
if (CDgetvolume(cddevs[cd_desc].p, &volume)) {
vol->vol_front.left = volume.chan0;
vol->vol_front.right = volume.chan1;
vol->vol_back.left = volume.chan2;
vol->vol_back.right = volume.chan3;
return 0;
}
return -1;
}
/* Set the volume */
int
cd_set_volume(int cd_desc, struct disc_volume vol)
{
CDVOLUME volume;
assert(cd_desc >= 0 && cd_desc < MAXOPEN_CDDEVS);
assert(cddevs[cd_desc].p != NULL);
volume.chan0 = vol.vol_front.left;
volume.chan1 = vol.vol_front.right;
volume.chan2 = vol.vol_back.left;
volume.chan3 = vol.vol_back.right;
if (CDsetvolume(cddevs[cd_desc].p, &volume)) {
return 0;
}
return -1;
}
#endif /* IRIX_CDAUDIO */
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