summaryrefslogtreecommitdiffstats
path: root/kscd/libwm/plat_sun_cdda.c
diff options
context:
space:
mode:
Diffstat (limited to 'kscd/libwm/plat_sun_cdda.c')
-rw-r--r--kscd/libwm/plat_sun_cdda.c380
1 files changed, 380 insertions, 0 deletions
diff --git a/kscd/libwm/plat_sun_cdda.c b/kscd/libwm/plat_sun_cdda.c
new file mode 100644
index 00000000..3f669a8b
--- /dev/null
+++ b/kscd/libwm/plat_sun_cdda.c
@@ -0,0 +1,380 @@
+/*
+ * $Id$
+ *
+ * This file is part of WorkMan, the civilized CD player library
+ * (c) 1991-1997 by Steven Grimm (original author)
+ * (c) by Dirk Försterling (current 'author' = maintainer)
+ * The maintainer can be contacted by his e-mail address:
+ * milliByte@DeathsDoor.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
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ *
+ * Sun (really Solaris) CDDA functions.
+ */
+
+#include "include/wm_cdda.h"
+
+#if defined(sun) || defined(__sun__) && defined(SYSV) && defined(BUILD_CDDA)
+
+
+#include "include/wm_struct.h"
+#include "include/wm_cdda.h"
+/* types.h and cdio.h are included by wm_cdda.h */
+
+#include <stdio.h>
+#include <math.h>
+#include <sys/ioctl.h>
+#include <malloc.h>
+#include <errno.h>
+
+#define WM_MSG_CLASS WM_MSG_CLASS_PLATFORM
+
+#define CDDABLKSIZE 2368
+#define SAMPLES_PER_BLK 588
+
+/* Address of next block to read. */
+int current_position = 0;
+
+/* Address of first and last blocks to read. */
+int starting_position = 0;
+int ending_position = 0;
+
+/* Playback direction. */
+int direction = 1;
+
+/* Number of blocks to read at once; initialize to the maximum. */
+/* (was 30. Set to 15 for INTeL. Maybe config option? */
+int numblocks = 15;
+
+/*
+ * This is the fastest way to convert from BCD to 8-bit.
+ */
+unsigned char unbcd[256] = {
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0,0,0,0,0,0,
+ 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 0,0,0,0,0,0,
+ 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 0,0,0,0,0,0,
+ 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 0,0,0,0,0,0,
+ 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 0,0,0,0,0,0,
+ 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 0,0,0,0,0,0,
+ 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 0,0,0,0,0,0,
+ 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 0,0,0,0,0,0,
+ 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 0,0,0,0,0,0,
+ 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
+ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
+};
+
+static long wmcdda_normalize(struct cdda_block *block);
+
+/*
+ * Initialize the CDDA data buffer and open the appropriate device.
+ *
+ * NOTE: We allocate twice as much space as we need to actually read a block;
+ * this lets us do audio manipulations without bothering to malloc a second
+ * buffer.
+ *
+ * Also, test to see if we can actually *do* CDDA on this drive; if not, we
+ * need to exit right away so the UI doesn't show the user any CDDA controls.
+ */
+int
+wmcdda_init(struct cdda_device* pdev, struct cdda_block *block)
+{
+ struct cdrom_cdda cdda;
+ int i;
+
+ if (pdev->fd > -1)
+ return -1;
+
+ for (i = 0; i < pdev->numblocks; i++) {
+ /* in Linux const */
+ pdev->blocks[i].buflen = pdev->frames_at_once * CDDABLKSIZE;
+ pdev->blocks[i].buf = malloc(pdev->blocks[i].buflen);
+ if (!pdev->blocks[i].buf)
+ return -ENOMEM;
+ }
+
+ pdev->fd = open(pdev->devname, 0);
+ if (pdev->fd == -1)
+ pdev->fd = open("/dev/rdsk/c0t6d0s2", 0);
+
+ if (pdev->fd > -1)
+ {
+ cdda.cdda_addr = 200;
+ cdda.cdda_length = 1;
+ cdda.cdda_data = pdev->blocks[0].buf;
+ cdda.cdda_subcode = CDROM_DA_SUBQ;
+
+ if (ioctl(pdev->fd, CDROMCDDA, &cdda) < 0)
+ {
+ block->status = WM_CDM_STOPPED;
+ return -1;
+ } else {
+ block->status = WM_CDM_STOPPED;
+ return 0;
+ }
+ } else {
+ block->status = WM_CDM_EJECTED;
+ return -1;
+ }
+}
+
+/*
+ * Close the CD-ROM device in preparation for exiting.
+ */
+int
+wmcdda_close(struct cdda_device* pdev)
+{
+ int i;
+
+ if(-1 == pdev->fd)
+ return -1;
+
+ close(pdev->fd);
+ pdev->fd = -1;
+
+ for (i = 0; i < pdev->numblocks; i++) {
+ free(pdev->blocks[i].buf);
+ pdev->blocks[i].buf = 0;
+ pdev->blocks[i].buflen = 0;
+ }
+
+ return 0;
+}
+
+/*
+ * Set up for playing the CD. Actually this doesn't play a thing, just sets a
+ * couple variables so we'll know what to do when we're called.
+ */
+int
+wmcdda_setup(int start, int end, int realstart)
+{
+ current_position = start - 150;
+ ending_position = end - 150;
+ starting_position = realstart - 150;
+
+ /*
+ * Special case: don't start at the "end" of a track if we're
+ * playing backwards!
+ */
+ if (direction == -1 && start == realstart)
+ current_position = ending_position - numblocks;
+ return 0;
+}
+
+/*
+ * Read some blocks from the CD. Stop if we hit the end of the current region.
+ *
+ * Returns number of bytes read, -1 on error, 0 if stopped for a benign reason.
+ */
+long
+wmcdda_read(struct cdda_device* pdev, struct cdda_block *block)
+{
+ struct cdrom_cdda cdda;
+ int blk;
+ unsigned char *q;
+ extern int speed;
+ unsigned char* rawbuf = block->buf;
+
+ if(pdev->fd < 0 && (wmcdda_init(pdev, block) < 0)) {
+ return -1;
+ }
+
+ /*
+ * Hit the end of the CD, probably.
+ */
+ if ((direction > 0 && current_position >= ending_position) ||
+ (direction < 0 && current_position < starting_position))
+ {
+ block->status = WM_CDM_TRACK_DONE;
+ return (0);
+ }
+
+ cdda.cdda_addr = current_position;
+ if (ending_position && current_position + pdev->frames_at_once > ending_position)
+ cdda.cdda_length = ending_position - current_position;
+ else
+ cdda.cdda_length = pdev->frames_at_once;
+ cdda.cdda_data = (unsigned char*)block->buf;
+ cdda.cdda_subcode = CDROM_DA_SUBQ;
+
+ if (ioctl(pdev->fd, CDROMCDDA, &cdda) < 0)
+ {
+ if (errno == ENXIO) /* CD ejected! */
+ {
+ block->status = WM_CDM_EJECTED;
+ return (-1);
+ }
+
+ /* Sometimes it fails once, dunno why */
+ if (ioctl(pdev->fd, CDROMCDDA, &cdda) < 0)
+ {
+ if (ioctl(pdev->fd, CDROMCDDA, &cdda) < 0)
+ {
+ if (ioctl(pdev->fd, CDROMCDDA, &cdda) < 0)
+ {
+ perror("CDROMCDDA");
+ block->status = WM_CDM_CDDAERROR;
+ return (-1);
+ }
+ }
+ }
+ }
+
+ if (speed > 148)
+ {
+ /*
+ * We want speed=148 to advance by cdda_length, but
+ * speed=256 to advance cdda_length * 4.
+ */
+ current_position = current_position +
+ (cdda.cdda_length * direction * (speed - 112)) / 36;
+ }
+ else
+ current_position = current_position + cdda.cdda_length * direction;
+
+ for (blk = 0; blk < numblocks; blk++)
+ {
+ /*
+ * New valid Q-subchannel information? Update the block
+ * status.
+ */
+ q = &rawbuf[blk * CDDABLKSIZE + SAMPLES_PER_BLK * 4];
+ if (*q == 1)
+ {
+ block->track = unbcd[q[1]];
+ block->index = unbcd[q[2]];
+ /*block->minute = unbcd[q[7]];
+ block->second = unbcd[q[8]];*/
+ block->frame = unbcd[q[9]];
+ block->status = WM_CDM_PLAYING;
+ block->buflen = cdda.cdda_length;
+ }
+ }
+
+ return wmcdda_normalize(block);
+}
+
+/*
+ * Normalize a bunch of CDDA data. Basically this means ripping out the
+ * Q subchannel data and doing byte-swapping, since the CD audio is in
+ * littleendian format.
+ *
+ * Scanning is handled here too.
+ *
+ * XXX - do byte swapping on Intel boxes?
+ */
+long
+wmcdda_normalize(struct cdda_block *block)
+{
+ int i, nextq;
+ long buflen = block->buflen;
+ int blocks = buflen / CDDABLKSIZE;
+ unsigned char *rawbuf = block->buf;
+ unsigned char *dest = rawbuf;
+ unsigned char tmp;
+ long *buf32 = (long *)rawbuf, tmp32;
+
+/*
+ * this was #ifndef LITTLEENDIAN
+ * in wmcdda it was called LITTLE_ENDIAN. Was this a flaw?
+ */
+#if WM_BIG_ENDIAN
+ if (blocks--)
+ for (i = 0; i < SAMPLES_PER_BLK * 2; i++)
+ {
+ /* Only need to use temp buffer on first block. */
+ tmp = *rawbuf++;
+ *dest++ = *rawbuf++;
+ *dest++ = tmp;
+ }
+#endif
+
+ while (blocks--)
+ {
+ /* Skip over Q data. */
+ rawbuf += 16;
+
+ for (i = 0; i < SAMPLES_PER_BLK * 2; i++)
+ {
+#if WM_LITTLE_ENDIAN
+ *dest++ = *rawbuf++;
+ *dest++ = *rawbuf++;
+#else
+ *dest++ = rawbuf[1];
+ *dest++ = rawbuf[0];
+ rawbuf += 2;
+#endif
+ }
+ }
+
+ buflen -= ((buflen / CDDABLKSIZE) * 16);
+
+ /*
+ * Reverse the data here if we're playing backwards.
+ * XXX - ideally this should be done above.
+ */
+ if (direction < 0)
+ {
+ buflen /= 4; /* we can move 32 bits at a time. */
+
+ for (i = 0; i < buflen / 2; i++)
+ {
+ tmp32 = buf32[i];
+ buf32[i] = buf32[buflen - i - 1];
+ buf32[buflen - i - 1] = tmp32;
+ }
+
+ buflen *= 4;
+ }
+
+ return (buflen);
+}
+
+/*
+ * Set the playback direction.
+ */
+void
+wmcdda_direction(int newdir)
+{
+ if (newdir == 0)
+ {
+ numblocks = 20;
+ direction = 1;
+ }
+ else
+ {
+ numblocks = 30;
+ direction = -1;
+ }
+}
+
+/*
+ * Do system-specific stuff to get ready to play at a particular speed.
+ */
+void
+wmcdda_speed(int speed)
+{
+ if (speed > 128)
+ numblocks = 12;
+ else
+ numblocks = direction > 0 ? 20 : 30;
+}
+
+#endif /* } */
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-05 02:35:18 +0000