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authorViliam Mateicka <the.metyl@gmail.com>2010-12-21 23:00:51 +0100
committerMax Kellermann <max@duempel.org>2010-12-22 07:36:14 +0100
commit28d7b29d722af9126b90de5e8525cc1ea7c46952 (patch)
tree69f203f883f3fb40c5bdf7b285225b07ef9c40cd /src/input
parent9cb4aaf3c2f530dcb7927f9b9a61d4d26c974fa2 (diff)
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input_cdda_plugin: new plugin to handle cdda:// protocol to access CD-DA audio CD's
Diffstat (limited to '')
-rw-r--r--src/input/cdda_input_plugin.c378
-rw-r--r--src/input/cdda_input_plugin.h28
2 files changed, 406 insertions, 0 deletions
diff --git a/src/input/cdda_input_plugin.c b/src/input/cdda_input_plugin.c
new file mode 100644
index 000000000..6a9766ac2
--- /dev/null
+++ b/src/input/cdda_input_plugin.c
@@ -0,0 +1,378 @@
+/*
+ * Copyright (C) 2003-2010 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_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_cdda {
+ 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 const struct input_plugin cdda_inputplugin;
+
+static inline GQuark
+cdda_quark(void)
+{
+ return g_quark_from_static_string("cdda");
+}
+
+static void
+input_cdda_close(struct input_stream *is)
+{
+ struct input_cdda *i = (struct input_cdda *)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);
+}
+
+static struct input_stream *
+input_cdda_open(const char *uri, GError **error_r)
+{
+ struct input_cdda *i;
+ int idx;
+ char **cd_drives; /* List of all drives with a loaded CDDA in it. */
+
+ if (!g_str_has_prefix(uri, "cdda://"))
+ return NULL;
+
+ i = g_new(struct input_cdda, 1);
+ input_stream_init(&i->base, &input_plugin_cdda, uri);
+
+ /* initialize everything (should be already) */
+ i->drv = NULL;
+ i->cdio = NULL;
+ i->para = NULL;
+ pcm_buffer_init(&i->conv_buffer);
+
+ if (parse_cdda_uri(uri, &drive, &trackno) == -1) {
+ g_set_error(error_r, cdda_quark(), 0,
+ "Unable parse URI\n");
+ input_cdda_close(i);
+ return NULL;
+ }
+
+ /* get list of CD's supporting CD-DA */
+ cd_drives = cdio_get_devices_with_cap(NULL, CDIO_FS_AUDIO, false);
+ if (!cd_drives) {
+ g_set_error(error_r, cdda_quark(), 0,
+ "Unable find or access a CD-ROM drive with an audio CD in it.\n");
+ input_cdda_close(i);
+ return NULL;
+ }
+
+ /* list all available drives */
+ idx = 0;
+ while (cd_drives[idx] != NULL) {
+ g_debug("CD drive: %s\n", cd_drives[idx++]);
+ }
+
+ /* Found such a CD-ROM with a CD-DA loaded. Use the first drive in the list. */
+ i->cdio = cdio_open(*cd_drives, DRIVER_UNKNOWN);
+ i->drv = cdio_cddap_identify_cdio(i->cdio, 1, NULL);
+
+ /* Don't need a list of CD's with CD-DA's any more. */
+ cdio_free_device_list(cd_drives);
+
+ if ( !i->drv ) {
+ g_set_error(error_r, cdda_quark(), 0, "Unable to identify audio CD disc.\n");
+ input_cdda_close(i);
+ return NULL;
+ }
+
+ /* We'll set for verbose paranoia messages. */
+ cdda_verbose_set(i->drv, CDDA_MESSAGE_PRINTIT, CDDA_MESSAGE_PRINTIT);
+
+ if ( 0 != cdio_cddap_open(i->drv) ) {
+ g_set_error(error_r, cdda_quark(), 0, "Unable to open disc.\n");
+ input_cdda_close(i);
+ return NULL;
+ }
+
+ i->endian = data_bigendianp(i->drv);
+ switch (i->endian) {
+ case -1:
+ g_debug("cdda: drive returns unknown audio data, assuming Little Endian\n");
+ 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.\n");
+ break;
+ default:
+ g_set_error(error_r, cdda_quark(), 0, "Drive returns unknown data type %d.\n", i->endian);
+ input_cdda_close(i)
+ return NULL;
+ }
+
+ g_debug("Disc last LSN: %d\n", cdio_get_disc_last_lsn(i->cdio));
+
+ tracks = cdio_get_num_tracks(i->cdio);
+ first_track = cdio_get_first_track_num(i->cdio);
+
+ {
+ int ti, j, tracks, first_track;
+
+ g_debug("CD-ROM Track List (%i - %i)\n", first_track, first_track+tracks-1);
+ g_debug(" #: LSN\n");
+
+ /* generate track listing */
+ for (j = 0, ti = first_track; j < tracks; ti++, j++) {
+ lsn_t lsn = cdio_get_track_lsn(i->cdio, ti);
+ if (CDIO_INVALID_LSN != lsn) {
+ g_debug("%3d: %06lu\n", (int) ti, (long unsigned int) lsn);
+ }
+ }
+ g_debug("%3X: %06lu leadout\n", CDIO_CDROM_LEADOUT_TRACK,
+ (long unsigned int) cdio_get_track_lsn(i->cdio,
+ CDIO_CDROM_LEADOUT_TRACK));
+ }
+
+ if (i->trackno == -1) {
+ g_set_error(error_r, cdda_quark(), 0,
+ "Invalid track # in %s", uri);
+ input_cdda_close(i);
+ return NULL;
+ }
+
+
+ i->lsn_relofs = 0;
+ i->lsn_from = cdio_get_track_lsn( i->cdio, i->trackno );
+ i->lsn_to = cdio_get_track_last_lsn( i->cdio, i->trackno );
+
+ 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->eof = false;
+
+ 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;
+}
+
+
+/* single archive handling */
+static int
+input_cdda_archive_extract_trackno(const char *path)
+{
+ long value;
+ char *endptr, *str;
+
+ //remove .wav
+ str = strrchr(path, '.');
+ if (str)
+ *str = 0;
+
+ //remove leading 0's
+ while (*path == '0')
+ path++;
+
+ value = strtol(path, &endptr, 0);
+ if (*endptr != 0 || value < 0) {
+ return -1;
+ }
+ return value;
+}
+
+static bool
+input_cdda_seek(struct input_stream *is,
+ goffset offset, int whence, GError **error_r)
+{
+ struct input_cdda *cis = (struct input_cdda *)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, cdda_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 size_t
+input_cdda_read(struct input_stream *is, void *ptr, size_t length,
+ GError **error_r)
+{
+ struct input_cdda *cis = (struct input_cdda *)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->archive->drv);
+ if (s_err) {
+ g_warning("paranoia_read: %s\n", s_err );
+ free(s_err);
+ }
+ s_mess = cdda_messages(cis->archive->drv);
+ if (s_mess) {
+ g_debug("paranoia_read: %s\n", s_mess );
+ free(s_mess);
+ }
+ if (!rbuf) {
+ g_set_error(error_r, cdda_quark(), 0,
+ "paranoia read error. Stopping.\n");
+ return 0;
+ }
+ //do the swapping if nessesary
+ if (cis->archive->endian != 0) {
+ g_debug("swap\n");
+ 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_cdda_eof(struct input_stream *is)
+{
+ struct input_cdda *cis = (struct input_cdda *)is;
+
+ return (cis->lsn_from + cis->lsn_relofs > cis->lsn_to);
+}
+
+
+static const struct input_plugin input_plugin_cdda = {
+ .open = input_cdda_open,
+ .close = input_cdda_close,
+ .seek = input_cdda_seek,
+ .read = input_cdda_read,
+ .eof = input_cdda_eof
+};
+
diff --git a/src/input/cdda_input_plugin.h b/src/input/cdda_input_plugin.h
new file mode 100644
index 000000000..9104fd4d6
--- /dev/null
+++ b/src/input/cdda_input_plugin.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2003-2010 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.
+ */
+
+#ifndef MPD_CDDA_INPUT_PLUGIN_H
+#define MPD_CDDA_INPUT_PLUGIN_H
+
+/**
+ * An input plugin based on libcdio_paranoia library.
+ */
+extern const struct input_plugin input_plugin_cdda;
+
+#endif