aboutsummaryrefslogtreecommitdiffstats
path: root/src/input/cdio_paranoia_input_plugin.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--src/input/cdio_paranoia_input_plugin.c392
1 files changed, 392 insertions, 0 deletions
diff --git a/src/input/cdio_paranoia_input_plugin.c b/src/input/cdio_paranoia_input_plugin.c
new file mode 100644
index 000000000..1a1c8d2c5
--- /dev/null
+++ b/src/input/cdio_paranoia_input_plugin.c
@@ -0,0 +1,392 @@
+/*
+ * Copyright (C) 2003-2011 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/**
+ * CD-Audio handling (requires libcdio_paranoia)
+ */
+
+#include "config.h"
+#include "input/cdio_paranoia_input_plugin.h"
+#include "input_internal.h"
+#include "input_plugin.h"
+#include "refcount.h"
+#include "pcm_buffer.h"
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <string.h>
+#include <stdlib.h>
+#include <glib.h>
+#include <assert.h>
+
+#include <cdio/paranoia.h>
+#include <cdio/cd_types.h>
+
+struct input_cdio_paranoia {
+ struct input_stream base;
+
+ cdrom_drive_t *drv;
+ CdIo_t *cdio;
+ cdrom_paranoia_t *para;
+
+ int endian;
+
+ lsn_t lsn_from, lsn_to;
+ int lsn_relofs;
+
+ int trackno;
+
+ char buffer[CDIO_CD_FRAMESIZE_RAW];
+ int buffer_lsn;
+
+ struct pcm_buffer conv_buffer;
+};
+
+static inline GQuark
+cdio_quark(void)
+{
+ return g_quark_from_static_string("cdio");
+}
+
+static void
+input_cdio_close(struct input_stream *is)
+{
+ struct input_cdio_paranoia *i = (struct input_cdio_paranoia *)is;
+
+ pcm_buffer_deinit(&i->conv_buffer);
+
+ if (i->para)
+ cdio_paranoia_free(i->para);
+ if (i->drv)
+ cdio_cddap_close_no_free_cdio( i->drv);
+ if (i->cdio)
+ cdio_destroy( i->cdio );
+
+ input_stream_deinit(&i->base);
+ g_free(i);
+}
+
+struct cdio_uri {
+ char device[64];
+ int track;
+};
+
+static bool
+parse_cdio_uri(struct cdio_uri *dest, const char *src, GError **error_r)
+{
+ if (!g_str_has_prefix(src, "cdda://"))
+ return false;
+
+ src += 7;
+
+ if (*src == 0) {
+ /* play the whole CD in the default drive */
+ dest->device[0] = 0;
+ dest->track = -1;
+ return true;
+ }
+
+ const char *slash = strrchr(src, '/');
+ if (slash == NULL) {
+ /* play the whole CD in the specified drive */
+ g_strlcpy(dest->device, src, sizeof(dest->device));
+ dest->track = -1;
+ return true;
+ }
+
+ size_t device_length = slash - src;
+ if (device_length >= sizeof(dest->device))
+ device_length = sizeof(dest->device) - 1;
+
+ memcpy(dest->device, src, device_length);
+ dest->device[device_length] = 0;
+
+ const char *track = slash + 1;
+
+ char *endptr;
+ dest->track = strtoul(track, &endptr, 10);
+ if (*endptr != 0) {
+ g_set_error(error_r, cdio_quark(), 0,
+ "Malformed track number");
+ return false;
+ }
+
+ if (endptr == track)
+ /* play the whole CD */
+ dest->track = -1;
+
+ return true;
+}
+
+static char *
+cdio_detect_device(void)
+{
+ char **devices = cdio_get_devices_with_cap(NULL, CDIO_FS_AUDIO, false);
+ if (devices == NULL)
+ return NULL;
+
+ char *device = g_strdup(devices[0]);
+ cdio_free_device_list(devices);
+
+ return device;
+}
+
+static struct input_stream *
+input_cdio_open(const char *uri,
+ GMutex *mutex, GCond *cond,
+ GError **error_r)
+{
+ struct input_cdio_paranoia *i;
+
+ struct cdio_uri parsed_uri;
+ if (!parse_cdio_uri(&parsed_uri, uri, error_r))
+ return NULL;
+
+ i = g_new(struct input_cdio_paranoia, 1);
+ input_stream_init(&i->base, &input_plugin_cdio_paranoia, uri,
+ mutex, cond);
+
+ /* initialize everything (should be already) */
+ i->drv = NULL;
+ i->cdio = NULL;
+ i->para = NULL;
+ i->trackno = parsed_uri.track;
+ pcm_buffer_init(&i->conv_buffer);
+
+ /* get list of CD's supporting CD-DA */
+ char *device = parsed_uri.device[0] != 0
+ ? g_strdup(parsed_uri.device)
+ : cdio_detect_device();
+ if (device == NULL) {
+ g_set_error(error_r, cdio_quark(), 0,
+ "Unable find or access a CD-ROM drive with an audio CD in it.");
+ input_cdio_close(&i->base);
+ return NULL;
+ }
+
+ /* Found such a CD-ROM with a CD-DA loaded. Use the first drive in the list. */
+ i->cdio = cdio_open(device, DRIVER_UNKNOWN);
+ g_free(device);
+
+ i->drv = cdio_cddap_identify_cdio(i->cdio, 1, NULL);
+
+ if ( !i->drv ) {
+ g_set_error(error_r, cdio_quark(), 0,
+ "Unable to identify audio CD disc.");
+ input_cdio_close(&i->base);
+ return NULL;
+ }
+
+ cdda_verbose_set(i->drv, CDDA_MESSAGE_FORGETIT, CDDA_MESSAGE_FORGETIT);
+
+ if ( 0 != cdio_cddap_open(i->drv) ) {
+ g_set_error(error_r, cdio_quark(), 0, "Unable to open disc.");
+ input_cdio_close(&i->base);
+ return NULL;
+ }
+
+ i->endian = data_bigendianp(i->drv);
+ switch (i->endian) {
+ case -1:
+ g_debug("cdda: drive returns unknown audio data, assuming Little Endian");
+ i->endian = 0;
+ break;
+ case 0:
+ g_debug("cdda: drive returns audio data Little Endian.");
+ break;
+ case 1:
+ g_debug("cdda: drive returns audio data Big Endian.");
+ break;
+ default:
+ g_set_error(error_r, cdio_quark(), 0,
+ "Drive returns unknown data type %d", i->endian);
+ input_cdio_close(&i->base);
+ return NULL;
+ }
+
+ i->lsn_relofs = 0;
+
+ if (i->trackno >= 0) {
+ i->lsn_from = cdio_get_track_lsn(i->cdio, i->trackno);
+ i->lsn_to = cdio_get_track_last_lsn(i->cdio, i->trackno);
+ } else {
+ i->lsn_from = 0;
+ i->lsn_to = cdio_get_disc_last_lsn(i->cdio);
+ }
+
+ i->para = cdio_paranoia_init(i->drv);
+
+ /* Set reading mode for full paranoia, but allow skipping sectors. */
+ paranoia_modeset(i->para, PARANOIA_MODE_FULL^PARANOIA_MODE_NEVERSKIP);
+
+ /* seek to beginning of the track */
+ cdio_paranoia_seek(i->para, i->lsn_from, SEEK_SET);
+
+ i->base.ready = true;
+ i->base.seekable = true;
+ i->base.size = (i->lsn_to - i->lsn_from + 1) * CDIO_CD_FRAMESIZE_RAW;
+
+ /* hack to make MPD select the "pcm" decoder plugin */
+ i->base.mime = g_strdup("audio/x-mpd-cdda-pcm");
+
+ return &i->base;
+}
+
+static bool
+input_cdio_seek(struct input_stream *is,
+ goffset offset, int whence, GError **error_r)
+{
+ struct input_cdio_paranoia *cis = (struct input_cdio_paranoia *)is;
+
+ /* calculate absolute offset */
+ switch (whence) {
+ case SEEK_SET:
+ break;
+ case SEEK_CUR:
+ offset += cis->base.offset;
+ break;
+ case SEEK_END:
+ offset += cis->base.size;
+ break;
+ }
+
+ if (offset < 0 || offset > cis->base.size) {
+ g_set_error(error_r, cdio_quark(), 0,
+ "Invalid offset to seek %ld (%ld)",
+ (long int)offset, (long int)cis->base.size);
+ return false;
+ }
+
+ /* simple case */
+ if (offset == cis->base.offset)
+ return true;
+
+ /* calculate current LSN */
+ cis->lsn_relofs = offset / CDIO_CD_FRAMESIZE_RAW;
+ cis->base.offset = offset;
+
+ cdio_paranoia_seek(cis->para, cis->lsn_from + cis->lsn_relofs, SEEK_SET);
+
+ return true;
+}
+
+static inline size_t
+pcm16_to_wave(uint16_t *dst16, const uint16_t *src16, size_t length)
+{
+ size_t cnt = length >> 1;
+ while (cnt > 0) {
+ *dst16++ = GUINT16_TO_LE(*src16++);
+ cnt--;
+ }
+ return length;
+}
+
+static size_t
+input_cdio_read(struct input_stream *is, void *ptr, size_t length,
+ GError **error_r)
+{
+ struct input_cdio_paranoia *cis = (struct input_cdio_paranoia *)is;
+ size_t nbytes = 0;
+ int diff;
+ size_t len, maxwrite;
+ int16_t *rbuf;
+ char *s_err, *s_mess;
+ char *wptr = (char *) ptr;
+
+ while (length > 0) {
+
+
+ /* end of track ? */
+ if (cis->lsn_from + cis->lsn_relofs > cis->lsn_to)
+ break;
+
+ //current sector was changed ?
+ if (cis->lsn_relofs != cis->buffer_lsn) {
+ rbuf = cdio_paranoia_read(cis->para, NULL);
+
+ s_err = cdda_errors(cis->drv);
+ if (s_err) {
+ g_warning("paranoia_read: %s", s_err );
+ free(s_err);
+ }
+ s_mess = cdda_messages(cis->drv);
+ if (s_mess) {
+ free(s_mess);
+ }
+ if (!rbuf) {
+ g_set_error(error_r, cdio_quark(), 0,
+ "paranoia read error. Stopping.");
+ return 0;
+ }
+ //do the swapping if nessesary
+ if (cis->endian != 0) {
+ uint16_t *conv_buffer = pcm_buffer_get(&cis->conv_buffer, CDIO_CD_FRAMESIZE_RAW );
+ /* do endian conversion ! */
+ pcm16_to_wave( conv_buffer, (uint16_t*) rbuf, CDIO_CD_FRAMESIZE_RAW);
+ rbuf = (int16_t *)conv_buffer;
+ }
+ //store current buffer
+ memcpy(cis->buffer, rbuf, CDIO_CD_FRAMESIZE_RAW);
+ cis->buffer_lsn = cis->lsn_relofs;
+ } else {
+ //use cached sector
+ rbuf = (int16_t*) cis->buffer;
+ }
+
+ //correct offset
+ diff = cis->base.offset - cis->lsn_relofs * CDIO_CD_FRAMESIZE_RAW;
+
+ assert(diff >= 0 && diff < CDIO_CD_FRAMESIZE_RAW);
+
+ maxwrite = CDIO_CD_FRAMESIZE_RAW - diff; //# of bytes pending in current buffer
+ len = (length < maxwrite? length : maxwrite);
+
+ //skip diff bytes from this lsn
+ memcpy(wptr, ((char*)rbuf) + diff, len);
+ //update pointer
+ wptr += len;
+ nbytes += len;
+
+ //update offset
+ cis->base.offset += len;
+ cis->lsn_relofs = cis->base.offset / CDIO_CD_FRAMESIZE_RAW;
+ //update length
+ length -= len;
+ }
+
+ return nbytes;
+}
+
+static bool
+input_cdio_eof(struct input_stream *is)
+{
+ struct input_cdio_paranoia *cis = (struct input_cdio_paranoia *)is;
+
+ return (cis->lsn_from + cis->lsn_relofs > cis->lsn_to);
+}
+
+const struct input_plugin input_plugin_cdio_paranoia = {
+ .name = "cdio_paranoia",
+ .open = input_cdio_open,
+ .close = input_cdio_close,
+ .seek = input_cdio_seek,
+ .read = input_cdio_read,
+ .eof = input_cdio_eof
+};