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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commite2de64d6f1beb9e492daf5b886e19933c1fa41dd (patch)
tree9047cf9e6b5c43878d5bf82660adae77ceee097a /kscd/libwm/plat_linux_cdda.c
downloadtdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.tar.gz
tdemultimedia-e2de64d6f1beb9e492daf5b886e19933c1fa41dd.zip
Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.
BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
Diffstat (limited to 'kscd/libwm/plat_linux_cdda.c')
-rw-r--r--kscd/libwm/plat_linux_cdda.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/kscd/libwm/plat_linux_cdda.c b/kscd/libwm/plat_linux_cdda.c
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+++ b/kscd/libwm/plat_linux_cdda.c
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+/*
+ * $Id$
+ *
+ * This file is part of WorkMan, the civilized CD player library
+ * (c) 1991-1997 by Steven Grimm (original author)
+ * (c) by Dirk F�sterling (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
+ *
+ *
+ * Linux CDDA functions. Derived from the SUN module.
+ */
+
+#include "include/wm_cdda.h"
+
+#if defined(__linux__) && defined(BUILD_CDDA)
+
+#ifndef __GNUC__
+#define __GNUC__ 1
+#endif
+/* needed for vanilla kernel headers, which do provide __u64 only
+ for ansi */
+#undef __STRICT_ANSI__
+/* needed for non-ansi kernel headers */
+#define asm __asm__
+#define inline __inline__
+#include <asm/types.h>
+#include <linux/cdrom.h>
+#undef asm
+#undef inline
+
+#include <stdio.h>
+#include <math.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+#include "include/wm_struct.h"
+#include "include/wm_cdda.h"
+
+#define WM_MSG_CLASS WM_MSG_CLASS_PLATFORM
+
+#define CDDABLKSIZE 2352
+
+/* Address of next block to read. */
+static int current_position;
+
+/* Address of last block to read. */
+static int ending_position;
+
+static struct cdrom_read_audio cdda;
+static long wmcdda_normalize(struct cdda_block *block);
+
+
+/*
+ * Initialize the CDDA data buffer and open the appropriate device.
+ *
+ */
+int
+wmcdda_init(struct cdda_device* pdev)
+{
+ int i;
+
+ if (pdev->fd > -1)
+ return -1;
+
+ if(!pdev->devname)
+ 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) {
+ ERRORLOG("wmcdda_init ENOMEM\n");
+ return -ENOMEM;
+ }
+ }
+
+ pdev->fd = open(pdev->devname, O_RDONLY | O_NONBLOCK);
+
+ if (pdev->fd > -1) {
+ cdda.addr_format = CDROM_LBA;
+ cdda.addr.lba = 200;
+ cdda.nframes = 1;
+ cdda.buf = (unsigned char*)pdev->blocks[0].buf;
+
+ pdev->status = WM_CDM_STOPPED;
+ if((ioctl(pdev->fd, CDROMREADAUDIO, &cdda) < 0)) {
+ if (errno == ENXIO) {
+ /* CD ejected! */
+ pdev->status = WM_CDM_EJECTED;
+ return 0;
+ } else {
+ /* Sometimes it fails once, dunno why */
+ pdev->status = WM_CDM_CDDAERROR;
+ return 0;
+ }
+ }
+ } else {
+ ERRORLOG("canot open device, errno %i\n", errno);
+ pdev->status = WM_CDM_UNKNOWN;
+ return -1;
+ }
+
+ pdev->status = WM_CDM_UNKNOWN;
+ return 0;
+}
+
+/*
+ * 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;
+ ending_position = end;
+
+ 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)
+{
+ if (pdev->fd < 0 && wmcdda_init(pdev)) {
+ return -1;
+ }
+
+ /* Hit the end of the CD, probably. */
+ if (current_position >= ending_position) {
+ block->status = WM_CDM_TRACK_DONE;
+ return 0;
+ }
+
+ cdda.addr_format = CDROM_LBA;
+ cdda.addr.lba = current_position - CD_MSF_OFFSET;
+ if (ending_position && current_position + pdev->frames_at_once > ending_position)
+ cdda.nframes = ending_position - current_position;
+ else
+ cdda.nframes = pdev->frames_at_once;
+
+ cdda.buf = (unsigned char*)block->buf;
+
+ if (ioctl(pdev->fd, CDROMREADAUDIO, &cdda) < 0) {
+ if (errno == ENXIO) {
+ /* CD ejected! */
+ block->status = WM_CDM_EJECTED;
+ return 0;
+ } else {
+ /* Sometimes it fails once, dunno why */
+ block->status = WM_CDM_CDDAERROR;
+ return 0;
+ }
+ }
+
+ block->track = -1;
+ block->index = 0;
+ block->frame = current_position;
+ block->status = WM_CDM_PLAYING;
+ block->buflen = cdda.nframes * CDDABLKSIZE;
+
+ current_position = current_position + cdda.nframes;
+
+ return wmcdda_normalize(block);
+}
+
+/*
+ * Normalize a bunch of CDDA data. Basically this means doing byte-swapping, since the CD audio is in
+ * littleendian format.
+ */
+long
+wmcdda_normalize(struct cdda_block *block)
+{
+#if WM_BIG_ENDIAN
+ int i;
+ int blocks = block->buflen / CDDABLKSIZE;
+ char *rawbuf = block->buf;
+ char *dest = block->buf;
+
+ while (blocks--) {
+ for (i = 0; i < CDDABLKSIZE / 2; i++) {
+ *dest++ = rawbuf[1];
+ *dest++ = rawbuf[0];
+ rawbuf += 2;
+ }
+ }
+#endif
+ return block->buflen;
+}
+
+/*
+ * Set the playback direction.
+ */
+void
+wmcdda_direction(int newdir)
+{
+}
+
+/*
+ * Do system-specific stuff to get ready to play at a particular speed.
+ */
+void
+wmcdda_speed(int speed)
+{
+}
+
+#endif