--- /dev/null
+/* GStreamer
+ * Copyright (C) 1999 Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) 2005 Tim-Philipp Müller <tim centricular net>
+ *
+ * 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.
+ */
+
+/* TODO:
+ *
+ * - in ::start(), we want to post a tags message with an array or a list
+ * of tagslists of all tracks, so that applications know at least the
+ * number of tracks and all track durations immediately without having
+ * to do any querying. We have to decide what type and name to use for
+ * this array of track taglists.
+ *
+ * - FIX cddb discid calculation algorithm for mixed mode CDs - do we use
+ * offsets and duration of ALL tracks (data + audio) for the CDDB ID
+ * calculation, or only audio tracks?
+ *
+ * - Do we really need properties for the TOC bias/offset stuff? Wouldn't
+ * environment variables make much more sense? Do we need this at all
+ * (does it only affect ancient hardware?)
+ */
+
+/**
+ * SECTION:gstcddabasesrc
+ * @short_description: Base class for CD digital audio (CDDA) sources
+ *
+ * <refsect2>
+ * <para>
+ * Provides a base class for CDDA sources, which handles things like seeking,
+ * querying, discid calculation, tags, and buffer timestamping.
+ * </para>
+ * <title>Using GstCddaBaseSrc-based elements in applications</title>
+ * <para>
+ * GstCddaBaseSrc registers two #GstFormat<!-- -->s of its own, namely
+ * the "track" format and the "sector" format. Applications will usually
+ * only find the "track" format interesting. You can retrieve that #GstFormat
+ * for use in seek events or queries with gst_format_get_by_nick("track").
+ * </para>
+ * <para>
+ * In order to query the number of tracks, for example, an application would
+ * set the CDDA source element to READY or PAUSED state and then query the
+ * the number of tracks via gst_element_query_duration() using the track
+ * format acquired above. Applications can query the currently playing track
+ * in the same way.
+ * </para>
+ * <para>
+ * Alternatively, applications may retrieve the currently playing track and
+ * the total number of tracks from the taglist that will posted on the bus
+ * whenever the CD is opened or the currently playing track changes. The
+ * taglist will contain GST_TAG_TRACK_NUMBER and GST_TAG_TRACK_COUNT tags.
+ * </para>
+ * <para>
+ * Applications playing back CD audio using playbin and cdda://n URIs should
+ * issue a seek command in track format to change between tracks, rather than
+ * setting a new cdda://n+1 URI on playbin (as setting a new URI on playbin
+ * involves closing and re-opening the CD device, which is much much slower).
+ * </para>
+ * <title>Tags and meta-information</title>
+ * <para>
+ * CDDA sources will automatically emit a number of tags, details about which
+ * can be found in the libgsttag documentation. Those tags are:
+ * #GST_TAG_CDDA_CDDB_DISCID, #GST_TAG_CDDA_CDDB_DISCID_FULL,
+ * #GST_TAG_CDDA_MUSICBRAINZ_DISCID, #GST_TAG_CDDA_MUSICBRAINZ_DISCID_FULL,
+ * among others.
+ * </para>
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+#include <stdlib.h> /* for strtol */
+
+#include "gstcddabasesrc.h"
+#include "gst/gst-i18n-plugin.h"
+
+GST_DEBUG_CATEGORY_STATIC (gst_cdda_base_src_debug);
+#define GST_CAT_DEFAULT gst_cdda_base_src_debug
+
+#define DEFAULT_DEVICE "/dev/cdrom"
+
+#define CD_FRAMESIZE_RAW (2352)
+
+#define SECTORS_PER_SECOND (75)
+#define SECTORS_PER_MINUTE (75*60)
+#define SAMPLES_PER_SECTOR (CD_FRAMESIZE_RAW >> 2)
+#define TIME_INTERVAL_FROM_SECTORS(sectors) ((SAMPLES_PER_SECTOR * sectors * GST_SECOND) / 44100)
+#define SECTORS_FROM_TIME_INTERVAL(dtime) (dtime * 44100 / (SAMPLES_PER_SECTOR * GST_SECOND))
+
+enum
+{
+ ARG_0,
+ ARG_MODE,
+ ARG_DEVICE,
+ ARG_TRACK,
+ ARG_TOC_OFFSET,
+ ARG_TOC_BIAS
+};
+
+static void gst_cdda_base_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+static void gst_cdda_base_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_cdda_base_src_finalize (GObject * obj);
+static const GstQueryType *gst_cdda_base_src_get_query_types (GstPad * pad);
+static gboolean gst_cdda_base_src_query (GstBaseSrc * src, GstQuery * query);
+static gboolean gst_cdda_base_src_handle_event (GstBaseSrc * basesrc,
+ GstEvent * event);
+static gboolean gst_cdda_base_src_do_seek (GstBaseSrc * basesrc,
+ GstSegment * segment);
+static void gst_cdda_base_src_setup_interfaces (GType type);
+static gboolean gst_cdda_base_src_start (GstBaseSrc * basesrc);
+static gboolean gst_cdda_base_src_stop (GstBaseSrc * basesrc);
+static GstFlowReturn gst_cdda_base_src_create (GstPushSrc * pushsrc,
+ GstBuffer ** buf);
+static gboolean gst_cdda_base_src_is_seekable (GstBaseSrc * basesrc);
+static void gst_cdda_base_src_update_duration (GstCddaBaseSrc * src);
+static void gst_cdda_base_src_set_index (GstElement * src, GstIndex * index);
+static GstIndex *gst_cdda_base_src_get_index (GstElement * src);
+
+GST_BOILERPLATE_FULL (GstCddaBaseSrc, gst_cdda_base_src, GstPushSrc,
+ GST_TYPE_PUSH_SRC, gst_cdda_base_src_setup_interfaces);
+
+#define SRC_CAPS \
+ "audio/x-raw-int, " \
+ "endianness = (int) BYTE_ORDER, " \
+ "signed = (boolean) true, " \
+ "width = (int) 16, " \
+ "depth = (int) 16, " \
+ "rate = (int) 44100, " \
+ "channels = (int) 2" \
+
+static GstStaticPadTemplate gst_cdda_base_src_src_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS (SRC_CAPS)
+ );
+
+/* our two formats */
+static GstFormat track_format;
+static GstFormat sector_format;
+
+GType
+gst_cdda_base_src_mode_get_type (void)
+{
+ static GType mode_type; /* 0 */
+ static const GEnumValue modes[] = {
+ {GST_CDDA_BASE_SRC_MODE_NORMAL, "Stream consists of a single track",
+ "normal"},
+ {GST_CDDA_BASE_SRC_MODE_CONTINUOUS, "Stream consists of the whole disc",
+ "continuous"},
+ {0, NULL, NULL}
+ };
+
+ if (mode_type == 0)
+ mode_type = g_enum_register_static ("GstCddaBaseSrcMode", modes);
+
+ return mode_type;
+}
+
+static void
+gst_cdda_base_src_base_init (gpointer g_class)
+{
+ GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+ gst_element_class_add_pad_template (element_class,
+ gst_static_pad_template_get (&gst_cdda_base_src_src_template));
+
+ /* our very own formats */
+ track_format = gst_format_register ("track", "CD track");
+ sector_format = gst_format_register ("sector", "CD sector");
+
+ /* register CDDA tags */
+ gst_tag_register_musicbrainz_tags ();
+
+#if 0
+ ///// FIXME: what type to use here? ///////
+ gst_tag_register (GST_TAG_CDDA_TRACK_TAGS, GST_TAG_FLAG_META, GST_TYPE_TAG_LIST, "track-tags", "CDDA taglist for one track", gst_tag_merge_use_first); ///////////// FIXME: right function??? ///////
+#endif
+
+ GST_DEBUG_CATEGORY_INIT (gst_cdda_base_src_debug, "cddabasesrc", 0,
+ "CDDA Base Source");
+}
+
+static void
+gst_cdda_base_src_class_init (GstCddaBaseSrcClass * klass)
+{
+ GstElementClass *element_class;
+ GstPushSrcClass *pushsrc_class;
+ GstBaseSrcClass *basesrc_class;
+ GObjectClass *gobject_class;
+
+ gobject_class = (GObjectClass *) klass;
+ element_class = (GstElementClass *) klass;
+ basesrc_class = (GstBaseSrcClass *) klass;
+ pushsrc_class = (GstPushSrcClass *) klass;
+
+ gobject_class->set_property = gst_cdda_base_src_set_property;
+ gobject_class->get_property = gst_cdda_base_src_get_property;
+ gobject_class->finalize = gst_cdda_base_src_finalize;
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_DEVICE,
+ g_param_spec_string ("device", "Device", "CD device location",
+ NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_MODE,
+ g_param_spec_enum ("mode", "Mode", "Mode", GST_TYPE_CDDA_BASE_SRC_MODE,
+ GST_CDDA_BASE_SRC_MODE_NORMAL,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TRACK,
+ g_param_spec_uint ("track", "Track", "Track", 1, 99, 1,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+
+#if 0
+ /* Do we really need this toc adjustment stuff as properties? does the user
+ * have a chance to set it in practice, e.g. when using sound-juicer, rb,
+ * totem, whatever? Shouldn't we rather use environment variables
+ * for this? (tpm) */
+
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TOC_OFFSET,
+ g_param_spec_int ("toc-offset", "Table of contents offset",
+ "Add <n> sectors to the values reported", G_MININT, G_MAXINT, 0,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+ g_object_class_install_property (G_OBJECT_CLASS (klass), ARG_TOC_BIAS,
+ g_param_spec_boolean ("toc-bias", "Table of contents bias",
+ "Assume that the beginning offset of track 1 as reported in the TOC "
+ "will be addressed as LBA 0. Necessary for some Toshiba drives to "
+ "get track boundaries", FALSE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+#endif
+
+ element_class->set_index = GST_DEBUG_FUNCPTR (gst_cdda_base_src_set_index);
+ element_class->get_index = GST_DEBUG_FUNCPTR (gst_cdda_base_src_get_index);
+
+ basesrc_class->start = GST_DEBUG_FUNCPTR (gst_cdda_base_src_start);
+ basesrc_class->stop = GST_DEBUG_FUNCPTR (gst_cdda_base_src_stop);
+ basesrc_class->query = GST_DEBUG_FUNCPTR (gst_cdda_base_src_query);
+ basesrc_class->event = GST_DEBUG_FUNCPTR (gst_cdda_base_src_handle_event);
+ basesrc_class->do_seek = GST_DEBUG_FUNCPTR (gst_cdda_base_src_do_seek);
+ basesrc_class->is_seekable =
+ GST_DEBUG_FUNCPTR (gst_cdda_base_src_is_seekable);
+
+ pushsrc_class->create = GST_DEBUG_FUNCPTR (gst_cdda_base_src_create);
+}
+
+static void
+gst_cdda_base_src_init (GstCddaBaseSrc * src, GstCddaBaseSrcClass * klass)
+{
+ gst_pad_set_query_type_function (GST_BASE_SRC_PAD (src),
+ GST_DEBUG_FUNCPTR (gst_cdda_base_src_get_query_types));
+
+ /* we're not live and we operate in time */
+ gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
+ gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
+
+ src->device = NULL;
+ src->mode = GST_CDDA_BASE_SRC_MODE_NORMAL;
+ src->uri_track = -1;
+}
+
+static void
+gst_cdda_base_src_finalize (GObject * obj)
+{
+ GstCddaBaseSrc *cddasrc = GST_CDDA_BASE_SRC (obj);
+
+ g_free (cddasrc->uri);
+ g_free (cddasrc->device);
+
+ if (cddasrc->index)
+ gst_object_unref (cddasrc->index);
+
+ G_OBJECT_CLASS (parent_class)->finalize (obj);
+}
+
+static void
+gst_cdda_base_src_set_device (GstCddaBaseSrc * src, const gchar * device)
+{
+ if (src->device)
+ g_free (src->device);
+ src->device = NULL;
+
+ if (!device)
+ return;
+
+ /* skip multiple slashes */
+ while (*device == '/' && *(device + 1) == '/')
+ device++;
+
+#ifdef __sun
+ /*
+ * On Solaris, /dev/rdsk is used for accessing the CD device, but some
+ * applications pass in /dev/dsk, so correct.
+ */
+ if (strncmp (device, "/dev/dsk", 8) == 0) {
+ gchar *rdsk_value;
+ rdsk_value = g_strdup_printf ("/dev/rdsk%s", device + 8);
+ src->device = g_strdup (rdsk_value);
+ g_free (rdsk_value);
+ } else {
+#endif
+ src->device = g_strdup (device);
+#ifdef __sun
+ }
+#endif
+}
+
+static void
+gst_cdda_base_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (object);
+
+ GST_OBJECT_LOCK (src);
+
+ switch (prop_id) {
+ case ARG_MODE:{
+ src->mode = g_value_get_enum (value);
+ break;
+ }
+ case ARG_DEVICE:{
+ const gchar *dev = g_value_get_string (value);
+
+ gst_cdda_base_src_set_device (src, dev);
+ break;
+ }
+ case ARG_TRACK:{
+ guint track = g_value_get_uint (value);
+
+ if (src->num_tracks > 0 && track > src->num_tracks) {
+ g_warning ("Invalid track %u", track);
+ } else if (track > 0 && src->tracks != NULL) {
+ src->cur_sector = src->tracks[track - 1].start;
+ src->uri_track = track;
+ } else {
+ src->uri_track = track; /* seek will be done in start() */
+ }
+ break;
+ }
+ case ARG_TOC_OFFSET:{
+ src->toc_offset = g_value_get_int (value);
+ break;
+ }
+ case ARG_TOC_BIAS:{
+ src->toc_bias = g_value_get_boolean (value);
+ break;
+ }
+ default:{
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+ }
+
+ GST_OBJECT_UNLOCK (src);
+}
+
+static void
+gst_cdda_base_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstCddaBaseSrcClass *klass = GST_CDDA_BASE_SRC_GET_CLASS (object);
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (object);
+
+ GST_OBJECT_LOCK (src);
+
+ switch (prop_id) {
+ case ARG_MODE:
+ g_value_set_enum (value, src->mode);
+ break;
+ case ARG_DEVICE:{
+ if (src->device == NULL && klass->get_default_device != NULL) {
+ gchar *d = klass->get_default_device (src);
+
+ if (d != NULL) {
+ g_value_set_string (value, DEFAULT_DEVICE);
+ g_free (d);
+ break;
+ }
+ }
+ if (src->device == NULL)
+ g_value_set_string (value, DEFAULT_DEVICE);
+ else
+ g_value_set_string (value, src->device);
+ break;
+ }
+ case ARG_TRACK:{
+ if (src->num_tracks <= 0 && src->uri_track > 0) {
+ g_value_set_uint (value, src->uri_track);
+ } else {
+ g_value_set_uint (value, src->cur_track + 1);
+ }
+ break;
+ }
+ case ARG_TOC_OFFSET:
+ g_value_set_int (value, src->toc_offset);
+ break;
+ case ARG_TOC_BIAS:
+ g_value_set_boolean (value, src->toc_bias);
+ break;
+ default:{
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+ }
+
+ GST_OBJECT_UNLOCK (src);
+}
+
+static gint
+gst_cdda_base_src_get_track_from_sector (GstCddaBaseSrc * src, gint sector)
+{
+ gint i;
+
+ for (i = 0; i < src->num_tracks; ++i) {
+ if (sector >= src->tracks[i].start && sector <= src->tracks[i].end)
+ return i;
+ }
+ return -1;
+}
+
+static const GstQueryType *
+gst_cdda_base_src_get_query_types (GstPad * pad)
+{
+ static const GstQueryType src_query_types[] = {
+ GST_QUERY_DURATION,
+ GST_QUERY_POSITION,
+ GST_QUERY_CONVERT,
+ 0
+ };
+
+ return src_query_types;
+}
+
+static gboolean
+gst_cdda_base_src_convert (GstCddaBaseSrc * src, GstFormat src_format,
+ gint64 src_val, GstFormat dest_format, gint64 * dest_val)
+{
+ gboolean started;
+
+ GST_LOG_OBJECT (src, "converting value %" G_GINT64_FORMAT " from %s into %s",
+ src_val, gst_format_get_name (src_format),
+ gst_format_get_name (dest_format));
+
+ if (src_format == dest_format) {
+ *dest_val = src_val;
+ return TRUE;
+ }
+
+ started = GST_OBJECT_FLAG_IS_SET (GST_BASE_SRC (src), GST_BASE_SRC_STARTED);
+
+ if (src_format == track_format) {
+ if (!started)
+ goto not_started;
+ if (src_val < 0 || src_val >= src->num_tracks) {
+ GST_DEBUG_OBJECT (src, "track number %d out of bounds", (gint) src_val);
+ goto wrong_value;
+ }
+ src_format = GST_FORMAT_DEFAULT;
+ src_val = src->tracks[src_val].start * SAMPLES_PER_SECTOR;
+ } else if (src_format == sector_format) {
+ src_format = GST_FORMAT_DEFAULT;
+ src_val = src_val * SAMPLES_PER_SECTOR;
+ }
+
+ if (src_format == dest_format) {
+ *dest_val = src_val;
+ goto done;
+ }
+
+ switch (src_format) {
+ case GST_FORMAT_BYTES:
+ /* convert to samples (4 bytes per sample) */
+ src_val = src_val >> 2;
+ /* fallthrough */
+ case GST_FORMAT_DEFAULT:{
+ switch (dest_format) {
+ case GST_FORMAT_BYTES:{
+ if (src_val < 0) {
+ GST_DEBUG_OBJECT (src, "sample source value negative");
+ goto wrong_value;
+ }
+ *dest_val = src_val << 2; /* 4 bytes per sample */
+ break;
+ }
+ case GST_FORMAT_TIME:{
+ *dest_val = gst_util_uint64_scale_int (src_val, GST_SECOND, 44100);
+ break;
+ }
+ default:{
+ gint64 sector = src_val / SAMPLES_PER_SECTOR;
+
+ if (dest_format == sector_format) {
+ *dest_val = sector;
+ } else if (dest_format == track_format) {
+ if (!started)
+ goto not_started;
+ *dest_val = gst_cdda_base_src_get_track_from_sector (src, sector);
+ } else {
+ goto unknown_format;
+ }
+ break;
+ }
+ }
+ break;
+ }
+ case GST_FORMAT_TIME:{
+ gint64 sample_offset;
+
+ if (src_val == GST_CLOCK_TIME_NONE) {
+ GST_DEBUG_OBJECT (src, "source time value invalid");
+ goto wrong_value;
+ }
+
+ sample_offset = gst_util_uint64_scale_int (src_val, 44100, GST_SECOND);
+ switch (dest_format) {
+ case GST_FORMAT_BYTES:{
+ *dest_val = sample_offset << 2; /* 4 bytes per sample */
+ break;
+ }
+ case GST_FORMAT_DEFAULT:{
+ *dest_val = sample_offset;
+ break;
+ }
+ default:{
+ gint64 sector = sample_offset / SAMPLES_PER_SECTOR;
+
+ if (dest_format == sector_format) {
+ *dest_val = sector;
+ } else if (dest_format == track_format) {
+ if (!started)
+ goto not_started;
+ *dest_val = gst_cdda_base_src_get_track_from_sector (src, sector);
+ } else {
+ goto unknown_format;
+ }
+ break;
+ }
+ }
+ break;
+ }
+ default:{
+ goto unknown_format;
+ }
+ }
+
+done:
+ {
+ GST_LOG_OBJECT (src, "returning %" G_GINT64_FORMAT, *dest_val);
+ return TRUE;
+ }
+
+unknown_format:
+ {
+ GST_DEBUG_OBJECT (src, "conversion failed: %s", "unsupported format");
+ return FALSE;
+ }
+
+wrong_value:
+ {
+ GST_DEBUG_OBJECT (src, "conversion failed: %s",
+ "source value not within allowed range");
+ return FALSE;
+ }
+
+not_started:
+ {
+ GST_DEBUG_OBJECT (src, "conversion failed: %s",
+ "cannot do this conversion, device not open");
+ return FALSE;
+ }
+}
+
+static gboolean
+gst_cdda_base_src_query (GstBaseSrc * basesrc, GstQuery * query)
+{
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (basesrc);
+ gboolean started;
+
+ started = GST_OBJECT_FLAG_IS_SET (basesrc, GST_BASE_SRC_STARTED);
+
+ GST_LOG_OBJECT (src, "handling %s query",
+ gst_query_type_get_name (GST_QUERY_TYPE (query)));
+
+ switch (GST_QUERY_TYPE (query)) {
+ case GST_QUERY_DURATION:{
+ GstFormat dest_format;
+ gint64 dest_val;
+ guint sectors;
+
+ gst_query_parse_duration (query, &dest_format, NULL);
+
+ if (!started)
+ return FALSE;
+
+ g_assert (src->tracks != NULL);
+
+ if (dest_format == track_format) {
+ GST_LOG_OBJECT (src, "duration: %d tracks", src->num_tracks);
+ gst_query_set_duration (query, track_format, src->num_tracks);
+ return TRUE;
+ }
+
+ if (src->cur_track < 0 || src->cur_track >= src->num_tracks)
+ return FALSE;
+
+ if (src->mode == GST_CDDA_BASE_SRC_MODE_NORMAL) {
+ sectors = src->tracks[src->cur_track].end -
+ src->tracks[src->cur_track].start + 1;
+ } else {
+ sectors = src->tracks[src->num_tracks - 1].end -
+ src->tracks[0].start + 1;
+ }
+
+ /* ... and convert into final format */
+ if (!gst_cdda_base_src_convert (src, sector_format, sectors,
+ dest_format, &dest_val)) {
+ return FALSE;
+ }
+
+ gst_query_set_duration (query, dest_format, dest_val);
+
+ GST_LOG ("duration: %u sectors, %" G_GINT64_FORMAT " in format %s",
+ sectors, dest_val, gst_format_get_name (dest_format));
+ break;
+ }
+ case GST_QUERY_POSITION:{
+ GstFormat dest_format;
+ gint64 pos_sector;
+ gint64 dest_val;
+
+ gst_query_parse_position (query, &dest_format, NULL);
+
+ if (!started)
+ return FALSE;
+
+ g_assert (src->tracks != NULL);
+
+ if (dest_format == track_format) {
+ GST_LOG_OBJECT (src, "position: track %d", src->cur_track);
+ gst_query_set_position (query, track_format, src->cur_track);
+ return TRUE;
+ }
+
+ if (src->cur_track < 0 || src->cur_track >= src->num_tracks)
+ return FALSE;
+
+ if (src->mode == GST_CDDA_BASE_SRC_MODE_NORMAL) {
+ pos_sector = src->cur_sector - src->tracks[src->cur_track].start;
+ } else {
+ pos_sector = src->cur_sector - src->tracks[0].start;
+ }
+
+ if (!gst_cdda_base_src_convert (src, sector_format, pos_sector,
+ dest_format, &dest_val)) {
+ return FALSE;
+ }
+
+ gst_query_set_position (query, dest_format, dest_val);
+
+ GST_LOG ("position: sector %u, %" G_GINT64_FORMAT " in format %s",
+ (guint) pos_sector, dest_val, gst_format_get_name (dest_format));
+ break;
+ }
+ case GST_QUERY_CONVERT:{
+ GstFormat src_format, dest_format;
+ gint64 src_val, dest_val;
+
+ gst_query_parse_convert (query, &src_format, &src_val, &dest_format,
+ NULL);
+
+ if (!gst_cdda_base_src_convert (src, src_format, src_val, dest_format,
+ &dest_val)) {
+ return FALSE;
+ }
+
+ gst_query_set_convert (query, src_format, src_val, dest_format, dest_val);
+ break;
+ }
+ default:{
+ GST_DEBUG_OBJECT (src, "unhandled query, chaining up to parent class");
+ return GST_BASE_SRC_CLASS (parent_class)->query (basesrc, query);
+ }
+ }
+
+ return TRUE;
+}
+
+static gboolean
+gst_cdda_base_src_is_seekable (GstBaseSrc * basesrc)
+{
+ return TRUE;
+}
+
+static gboolean
+gst_cdda_base_src_do_seek (GstBaseSrc * basesrc, GstSegment * segment)
+{
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (basesrc);
+ gint64 seek_sector;
+
+ GST_DEBUG_OBJECT (src, "segment %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT,
+ GST_TIME_ARGS (segment->start), GST_TIME_ARGS (segment->stop));
+
+ if (!gst_cdda_base_src_convert (src, GST_FORMAT_TIME, segment->start,
+ sector_format, &seek_sector)) {
+ GST_WARNING_OBJECT (src, "conversion failed");
+ return FALSE;
+ }
+
+ /* we should only really be called when open */
+ g_assert (src->cur_track >= 0 && src->cur_track < src->num_tracks);
+
+ switch (src->mode) {
+ case GST_CDDA_BASE_SRC_MODE_NORMAL:
+ seek_sector += src->tracks[src->cur_track].start;
+ break;
+ case GST_CDDA_BASE_SRC_MODE_CONTINUOUS:
+ seek_sector += src->tracks[0].start;
+ break;
+ default:
+ g_return_val_if_reached (FALSE);
+ }
+
+ src->cur_sector = (gint) seek_sector;
+
+ GST_DEBUG_OBJECT (src, "seek'd to sector %d", src->cur_sector);
+
+ return TRUE;
+}
+
+static gboolean
+gst_cdda_base_src_handle_track_seek (GstCddaBaseSrc * src, gdouble rate,
+ GstSeekFlags flags, GstSeekType start_type, gint64 start,
+ GstSeekType stop_type, gint64 stop)
+{
+ GstBaseSrc *basesrc = GST_BASE_SRC (src);
+ GstEvent *event;
+
+ if ((flags & GST_SEEK_FLAG_SEGMENT) == GST_SEEK_FLAG_SEGMENT) {
+ gint64 start_time = -1;
+ gint64 stop_time = -1;
+
+ if (src->mode != GST_CDDA_BASE_SRC_MODE_CONTINUOUS) {
+ GST_DEBUG_OBJECT (src, "segment seek in track format is only "
+ "supported in CONTINUOUS mode, not in mode %d", src->mode);
+ return FALSE;
+ }
+
+ switch (start_type) {
+ case GST_SEEK_TYPE_SET:
+ if (!gst_cdda_base_src_convert (src, track_format, start,
+ GST_FORMAT_TIME, &start_time)) {
+ GST_DEBUG_OBJECT (src, "cannot convert track %d to time",
+ (gint) start);
+ return FALSE;
+ }
+ break;
+ case GST_SEEK_TYPE_END:
+ if (!gst_cdda_base_src_convert (src, track_format,
+ src->num_tracks - start - 1, GST_FORMAT_TIME, &start_time)) {
+ GST_DEBUG_OBJECT (src, "cannot convert track %d to time",
+ (gint) start);
+ return FALSE;
+ }
+ start_type = GST_SEEK_TYPE_SET;
+ break;
+ case GST_SEEK_TYPE_NONE:
+ start_time = -1;
+ break;
+ default:
+ g_return_val_if_reached (FALSE);
+ }
+
+ switch (stop_type) {
+ case GST_SEEK_TYPE_SET:
+ if (!gst_cdda_base_src_convert (src, track_format, stop,
+ GST_FORMAT_TIME, &stop_time)) {
+ GST_DEBUG_OBJECT (src, "cannot convert track %d to time",
+ (gint) stop);
+ return FALSE;
+ }
+ break;
+ case GST_SEEK_TYPE_END:
+ if (!gst_cdda_base_src_convert (src, track_format,
+ src->num_tracks - stop - 1, GST_FORMAT_TIME, &stop_time)) {
+ GST_DEBUG_OBJECT (src, "cannot convert track %d to time",
+ (gint) stop);
+ return FALSE;
+ }
+ stop_type = GST_SEEK_TYPE_SET;
+ break;
+ case GST_SEEK_TYPE_NONE:
+ stop_time = -1;
+ break;
+ default:
+ g_return_val_if_reached (FALSE);
+ }
+
+ GST_LOG_OBJECT (src, "seek segment %" GST_TIME_FORMAT "-%" GST_TIME_FORMAT,
+ GST_TIME_ARGS (start_time), GST_TIME_ARGS (stop_time));
+
+ /* send fake segment seek event in TIME format to
+ * base class, which will hopefully handle the rest */
+
+ event = gst_event_new_seek (rate, GST_FORMAT_TIME, flags, start_type,
+ start_time, stop_type, stop_time);
+
+ return GST_BASE_SRC_CLASS (parent_class)->event (basesrc, event);
+ }
+
+ /* not a segment seek */
+
+ if (start_type == GST_SEEK_TYPE_NONE) {
+ GST_LOG_OBJECT (src, "start seek type is NONE, nothing to do");
+ return TRUE;
+ }
+
+ if (stop_type != GST_SEEK_TYPE_NONE) {
+ GST_WARNING_OBJECT (src, "ignoring stop seek type (expected NONE)");
+ }
+
+ if (start < 0 || start >= src->num_tracks) {
+ GST_DEBUG_OBJECT (src, "invalid track %" G_GINT64_FORMAT, start);
+ return FALSE;
+ }
+
+ GST_DEBUG_OBJECT (src, "seeking to track %" G_GINT64_FORMAT, start + 1);
+
+ src->cur_sector = src->tracks[start].start;
+ GST_DEBUG_OBJECT (src, "starting at sector %d", src->cur_sector);
+
+ if (src->cur_track != start) {
+ src->cur_track = (gint) start;
+ src->uri_track = -1;
+ src->prev_track = -1;
+
+ gst_cdda_base_src_update_duration (src);
+ } else {
+ GST_DEBUG_OBJECT (src, "is current track, just seeking back to start");
+ }
+
+ /* send fake segment seek event in TIME format to
+ * base class (so we get a newsegment etc.) */
+ event = gst_event_new_seek (rate, GST_FORMAT_TIME, flags,
+ GST_SEEK_TYPE_SET, 0, GST_SEEK_TYPE_NONE, -1);
+
+ return GST_BASE_SRC_CLASS (parent_class)->event (basesrc, event);
+}
+
+static gboolean
+gst_cdda_base_src_handle_event (GstBaseSrc * basesrc, GstEvent * event)
+{
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (basesrc);
+ gboolean ret = FALSE;
+
+ GST_LOG_OBJECT (src, "handling %s event", GST_EVENT_TYPE_NAME (event));
+
+ switch (GST_EVENT_TYPE (event)) {
+ case GST_EVENT_SEEK:{
+ GstSeekType start_type, stop_type;
+ GstSeekFlags flags;
+ GstFormat format;
+ gdouble rate;
+ gint64 start, stop;
+
+ if (!GST_OBJECT_FLAG_IS_SET (basesrc, GST_BASE_SRC_STARTED)) {
+ GST_DEBUG_OBJECT (src, "seek failed: device not open");
+ break;
+ }
+
+ gst_event_parse_seek (event, &rate, &format, &flags, &start_type, &start,
+ &stop_type, &stop);
+
+ if (format == sector_format) {
+ GST_DEBUG_OBJECT (src, "seek in sector format not supported");
+ break;
+ }
+
+ if (format == track_format) {
+ ret = gst_cdda_base_src_handle_track_seek (src, rate, flags,
+ start_type, start, stop_type, stop);
+ } else {
+ GST_LOG_OBJECT (src, "let base class handle seek in %s format",
+ gst_format_get_name (format));
+ event = gst_event_ref (event);
+ ret = GST_BASE_SRC_CLASS (parent_class)->event (basesrc, event);
+ }
+ break;
+ }
+ default:{
+ GST_LOG_OBJECT (src, "let base class handle event");
+ ret = GST_BASE_SRC_CLASS (parent_class)->event (basesrc, event);
+ break;
+ }
+ }
+
+ return ret;
+}
+
+static GstURIType
+gst_cdda_base_src_uri_get_type (void)
+{
+ return GST_URI_SRC;
+}
+
+static gchar **
+gst_cdda_base_src_uri_get_protocols (void)
+{
+ static gchar *protocols[] = { (char *) "cdda", NULL };
+
+ return protocols;
+}
+
+static const gchar *
+gst_cdda_base_src_uri_get_uri (GstURIHandler * handler)
+{
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (handler);
+
+ GST_OBJECT_LOCK (src);
+
+ g_free (src->uri);
+
+ if (GST_OBJECT_FLAG_IS_SET (GST_BASE_SRC (src), GST_BASE_SRC_STARTED)) {
+ src->uri =
+ g_strdup_printf ("cdda://%s#%d", src->device,
+ (src->uri_track > 0) ? src->uri_track : 1);
+ } else {
+ src->uri = g_strdup ("cdda://1");
+ }
+
+ GST_OBJECT_UNLOCK (src);
+
+ return src->uri;
+}
+
+/* Note: gst_element_make_from_uri() might call us with just 'cdda://' as
+ * URI and expects us to return TRUE then (and this might be in any state) */
+
+/* We accept URIs of the format cdda://(device#track)|(track) */
+
+static gboolean
+gst_cdda_base_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
+{
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (handler);
+ gchar *protocol;
+ const gchar *location;
+ gchar *track_number;
+
+ GST_OBJECT_LOCK (src);
+
+ protocol = gst_uri_get_protocol (uri);
+ if (!protocol || g_ascii_strcasecmp (protocol, "cdda") != 0) {
+ g_free (protocol);
+ goto failed;
+ }
+ g_free (protocol);
+
+ location = uri + 7;
+ track_number = g_strrstr (location, "#");
+ src->uri_track = 0;
+ /* FIXME 0.11: ignore URI fragments that look like device paths for
+ * the benefit of rhythmbox and possibly other applications.
+ */
+ if (track_number && track_number[1] != '/') {
+ gchar *device, *nuri = g_strdup (uri);
+
+ track_number = nuri + (track_number - uri);
+ *track_number = '\0';
+ device = gst_uri_get_location (nuri);
+ gst_cdda_base_src_set_device (src, device);
+ g_free (device);
+ src->uri_track = strtol (track_number + 1, NULL, 10);
+ g_free (nuri);
+ } else {
+ if (*location == '\0')
+ src->uri_track = 1;
+ else
+ src->uri_track = strtol (location, NULL, 10);
+ }
+
+ if (src->uri_track < 1)
+ goto failed;
+
+ if (src->num_tracks > 0
+ && src->tracks != NULL && src->uri_track > src->num_tracks)
+ goto failed;
+
+ if (src->uri_track > 0 && src->tracks != NULL) {
+ GST_OBJECT_UNLOCK (src);
+
+ gst_pad_send_event (GST_BASE_SRC_PAD (src),
+ gst_event_new_seek (1.0, track_format, GST_SEEK_FLAG_FLUSH,
+ GST_SEEK_TYPE_SET, src->uri_track - 1, GST_SEEK_TYPE_NONE, -1));
+ } else {
+ /* seek will be done in start() */
+ GST_OBJECT_UNLOCK (src);
+ }
+
+ GST_LOG_OBJECT (handler, "successfully handled uri '%s'", uri);
+
+ return TRUE;
+
+failed:
+ {
+ GST_OBJECT_UNLOCK (src);
+ GST_DEBUG_OBJECT (src, "cannot handle URI '%s'", uri);
+ return FALSE;
+ }
+}
+
+static void
+gst_cdda_base_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
+{
+ GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
+
+ iface->get_type = gst_cdda_base_src_uri_get_type;
+ iface->get_uri = gst_cdda_base_src_uri_get_uri;
+ iface->set_uri = gst_cdda_base_src_uri_set_uri;
+ iface->get_protocols = gst_cdda_base_src_uri_get_protocols;
+}
+
+static void
+gst_cdda_base_src_setup_interfaces (GType type)
+{
+ static const GInterfaceInfo urihandler_info = {
+ gst_cdda_base_src_uri_handler_init,
+ NULL,
+ NULL,
+ };
+
+ g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);
+}
+
+/**
+ * gst_cdda_base_src_add_track:
+ * @src: a #GstCddaBaseSrc
+ * @track: address of #GstCddaBaseSrcTrack to add
+ *
+ * CDDA sources use this function from their start vfunc to announce the
+ * available data and audio tracks to the base source class. The caller
+ * should allocate @track on the stack, the base source will do a shallow
+ * copy of the structure (and take ownership of the taglist if there is one).
+ *
+ * Returns: FALSE on error, otherwise TRUE.
+ */
+
+gboolean
+gst_cdda_base_src_add_track (GstCddaBaseSrc * src, GstCddaBaseSrcTrack * track)
+{
+ g_return_val_if_fail (GST_IS_CDDA_BASE_SRC (src), FALSE);
+ g_return_val_if_fail (track != NULL, FALSE);
+ g_return_val_if_fail (track->num > 0, FALSE);
+
+ GST_DEBUG_OBJECT (src, "adding track %2u (%2u) [%6u-%6u] [%5s], tags: %"
+ GST_PTR_FORMAT, src->num_tracks + 1, track->num, track->start,
+ track->end, (track->is_audio) ? "AUDIO" : "DATA ", track->tags);
+
+ if (src->num_tracks > 0) {
+ guint end_of_previous_track = src->tracks[src->num_tracks - 1].end;
+
+ if (track->start <= end_of_previous_track) {
+ GST_WARNING ("track %2u overlaps with previous tracks", track->num);
+ return FALSE;
+ }
+ }
+
+ GST_OBJECT_LOCK (src);
+
+ ++src->num_tracks;
+ src->tracks = g_renew (GstCddaBaseSrcTrack, src->tracks, src->num_tracks);
+ src->tracks[src->num_tracks - 1] = *track;
+
+ GST_OBJECT_UNLOCK (src);
+
+ return TRUE;
+}
+
+static void
+gst_cdda_base_src_update_duration (GstCddaBaseSrc * src)
+{
+ GstBaseSrc *basesrc;
+ GstFormat format;
+ gint64 duration;
+
+ basesrc = GST_BASE_SRC (src);
+
+ format = GST_FORMAT_TIME;
+ if (gst_pad_query_duration (GST_BASE_SRC_PAD (src), &format, &duration)) {
+ gst_segment_set_duration (&basesrc->segment, GST_FORMAT_TIME, duration);
+ } else {
+ gst_segment_set_duration (&basesrc->segment, GST_FORMAT_TIME, -1);
+ duration = GST_CLOCK_TIME_NONE;
+ }
+
+ gst_element_post_message (GST_ELEMENT (src),
+ gst_message_new_duration (GST_OBJECT (src), GST_FORMAT_TIME, -1));
+
+ GST_LOG_OBJECT (src, "duration updated to %" GST_TIME_FORMAT,
+ GST_TIME_ARGS (duration));
+}
+
+#define CD_MSF_OFFSET 150
+
+/* the cddb hash function */
+static guint
+cddb_sum (gint n)
+{
+ guint ret;
+
+ ret = 0;
+ while (n > 0) {
+ ret += (n % 10);
+ n /= 10;
+ }
+ return ret;
+}
+
+static void
+gst_cddabasesrc_calculate_musicbrainz_discid (GstCddaBaseSrc * src)
+{
+ GString *s;
+ GChecksum *sha;
+ guchar digest[20];
+ gchar *ptr;
+ gchar tmp[9];
+ gulong i;
+ guint leadout_sector;
+ gsize digest_len;
+
+ s = g_string_new (NULL);
+
+ leadout_sector = src->tracks[src->num_tracks - 1].end + 1 + CD_MSF_OFFSET;
+
+ /* generate SHA digest */
+ sha = g_checksum_new (G_CHECKSUM_SHA1);
+ g_snprintf (tmp, sizeof (tmp), "%02X", src->tracks[0].num);
+ g_string_append_printf (s, "%02X", src->tracks[0].num);
+ g_checksum_update (sha, (guchar *) tmp, 2);
+
+ g_snprintf (tmp, sizeof (tmp), "%02X", src->tracks[src->num_tracks - 1].num);
+ g_string_append_printf (s, " %02X", src->tracks[src->num_tracks - 1].num);
+ g_checksum_update (sha, (guchar *) tmp, 2);
+
+ g_snprintf (tmp, sizeof (tmp), "%08X", leadout_sector);
+ g_string_append_printf (s, " %08X", leadout_sector);
+ g_checksum_update (sha, (guchar *) tmp, 8);
+
+ for (i = 0; i < 99; i++) {
+ if (i < src->num_tracks) {
+ guint frame_offset = src->tracks[i].start + CD_MSF_OFFSET;
+
+ g_snprintf (tmp, sizeof (tmp), "%08X", frame_offset);
+ g_string_append_printf (s, " %08X", frame_offset);
+ g_checksum_update (sha, (guchar *) tmp, 8);
+ } else {
+ g_checksum_update (sha, (guchar *) "00000000", 8);
+ }
+ }
+ digest_len = 20;
+ g_checksum_get_digest (sha, (guint8 *) & digest, &digest_len);
+
+ /* re-encode to base64 */
+ ptr = g_base64_encode (digest, digest_len);
+ g_checksum_free (sha);
+ i = strlen (ptr);
+
+ g_assert (i < sizeof (src->mb_discid) + 1);
+ memcpy (src->mb_discid, ptr, i);
+ src->mb_discid[i] = '\0';
+ free (ptr);
+
+ /* Replace '/', '+' and '=' by '_', '.' and '-' as specified on
+ * http://musicbrainz.org/doc/DiscIDCalculation
+ */
+ for (ptr = src->mb_discid; *ptr != '\0'; ptr++) {
+ if (*ptr == '/')
+ *ptr = '_';
+ else if (*ptr == '+')
+ *ptr = '.';
+ else if (*ptr == '=')
+ *ptr = '-';
+ }
+
+ GST_DEBUG_OBJECT (src, "musicbrainz-discid = %s", src->mb_discid);
+ GST_DEBUG_OBJECT (src, "musicbrainz-discid-full = %s", s->str);
+
+ gst_tag_list_add (src->tags, GST_TAG_MERGE_REPLACE,
+ GST_TAG_CDDA_MUSICBRAINZ_DISCID, src->mb_discid,
+ GST_TAG_CDDA_MUSICBRAINZ_DISCID_FULL, s->str, NULL);
+
+ g_string_free (s, TRUE);
+}
+
+static void
+lba_to_msf (guint sector, guint * p_m, guint * p_s, guint * p_f, guint * p_secs)
+{
+ guint m, s, f;
+
+ m = sector / SECTORS_PER_MINUTE;
+ sector = sector % SECTORS_PER_MINUTE;
+ s = sector / SECTORS_PER_SECOND;
+ f = sector % SECTORS_PER_SECOND;
+
+ if (p_m)
+ *p_m = m;
+ if (p_s)
+ *p_s = s;
+ if (p_f)
+ *p_f = f;
+ if (p_secs)
+ *p_secs = s + (m * 60);
+}
+
+static void
+gst_cdda_base_src_calculate_cddb_id (GstCddaBaseSrc * src)
+{
+ GString *s;
+ guint first_sector = 0, last_sector = 0;
+ guint start_secs, end_secs, secs, len_secs;
+ guint total_secs, num_audio_tracks;
+ guint id, t, i;
+
+ id = 0;
+ total_secs = 0;
+ num_audio_tracks = 0;
+
+ /* FIXME: do we use offsets and duration of ALL tracks (data + audio)
+ * for the CDDB ID calculation, or only audio tracks? */
+ for (i = 0; i < src->num_tracks; ++i) {
+ if (1) { /* src->tracks[i].is_audio) { */
+ if (num_audio_tracks == 0) {
+ first_sector = src->tracks[i].start + CD_MSF_OFFSET;
+ }
+ last_sector = src->tracks[i].end + CD_MSF_OFFSET + 1;
+ ++num_audio_tracks;
+
+ lba_to_msf (src->tracks[i].start + CD_MSF_OFFSET, NULL, NULL, NULL,
+ &secs);
+
+ len_secs = (src->tracks[i].end - src->tracks[i].start + 1) / 75;
+
+ GST_DEBUG_OBJECT (src, "track %02u: lsn %6u (%02u:%02u), "
+ "length: %u seconds (%02u:%02u)",
+ num_audio_tracks, src->tracks[i].start + CD_MSF_OFFSET,
+ secs / 60, secs % 60, len_secs, len_secs / 60, len_secs % 60);
+
+ id += cddb_sum (secs);
+ total_secs += len_secs;
+ }
+ }
+
+ /* first_sector = src->tracks[0].start + CD_MSF_OFFSET; */
+ lba_to_msf (first_sector, NULL, NULL, NULL, &start_secs);
+
+ /* last_sector = src->tracks[src->num_tracks-1].end + CD_MSF_OFFSET; */
+ lba_to_msf (last_sector, NULL, NULL, NULL, &end_secs);
+
+ GST_DEBUG_OBJECT (src, "first_sector = %u = %u secs (%02u:%02u)",
+ first_sector, start_secs, start_secs / 60, start_secs % 60);
+ GST_DEBUG_OBJECT (src, "last_sector = %u = %u secs (%02u:%02u)",
+ last_sector, end_secs, end_secs / 60, end_secs % 60);
+
+ t = end_secs - start_secs;
+
+ GST_DEBUG_OBJECT (src, "total length = %u secs (%02u:%02u), added title "
+ "lengths = %u seconds (%02u:%02u)", t, t / 60, t % 60, total_secs,
+ total_secs / 60, total_secs % 60);
+
+ src->discid = ((id % 0xff) << 24 | t << 8 | num_audio_tracks);
+
+ s = g_string_new (NULL);
+ g_string_append_printf (s, "%08x", src->discid);
+
+ gst_tag_list_add (src->tags, GST_TAG_MERGE_REPLACE,
+ GST_TAG_CDDA_CDDB_DISCID, s->str, NULL);
+
+ g_string_append_printf (s, " %u", src->num_tracks);
+ for (i = 0; i < src->num_tracks; ++i) {
+ g_string_append_printf (s, " %u", src->tracks[i].start + CD_MSF_OFFSET);
+ }
+ g_string_append_printf (s, " %u", t);
+
+ gst_tag_list_add (src->tags, GST_TAG_MERGE_REPLACE,
+ GST_TAG_CDDA_CDDB_DISCID_FULL, s->str, NULL);
+
+ GST_DEBUG_OBJECT (src, "cddb discid = %s", s->str);
+
+ g_string_free (s, TRUE);
+}
+
+static void
+gst_cdda_base_src_add_tags (GstCddaBaseSrc * src)
+{
+ gint i;
+
+ /* fill in details for each track */
+ for (i = 0; i < src->num_tracks; ++i) {
+ gint64 duration;
+ guint num_sectors;
+
+ if (src->tracks[i].tags == NULL)
+ src->tracks[i].tags = gst_tag_list_new ();
+
+ num_sectors = src->tracks[i].end - src->tracks[i].start + 1;
+ gst_cdda_base_src_convert (src, sector_format, num_sectors,
+ GST_FORMAT_TIME, &duration);
+
+ gst_tag_list_add (src->tracks[i].tags,
+ GST_TAG_MERGE_REPLACE,
+ GST_TAG_TRACK_NUMBER, i + 1,
+ GST_TAG_TRACK_COUNT, src->num_tracks, GST_TAG_DURATION, duration, NULL);
+ }
+
+ /* now fill in per-album tags and include each track's tags
+ * in the album tags, so that interested parties can retrieve
+ * the relevant details for each track in one go */
+
+ /* /////////////////////////////// FIXME should we rather insert num_tracks
+ * tags by the name of 'track-tags' and have the caller use
+ * gst_tag_list_get_value_index() rather than use tag names incl.
+ * the track number ?? *////////////////////////////////////////
+
+ gst_tag_list_add (src->tags, GST_TAG_MERGE_REPLACE,
+ GST_TAG_TRACK_COUNT, src->num_tracks, NULL);
+#if 0
+ for (i = 0; i < src->num_tracks; ++i) {
+ gst_tag_list_add (src->tags, GST_TAG_MERGE_APPEND,
+ GST_TAG_CDDA_TRACK_TAGS, src->tracks[i].tags, NULL);
+ }
+#endif
+
+ GST_DEBUG ("src->tags = %" GST_PTR_FORMAT, src->tags);
+}
+
+static void
+gst_cdda_base_src_add_index_associations (GstCddaBaseSrc * src)
+{
+ gint i;
+
+ for (i = 0; i < src->num_tracks; i++) {
+ gint64 sector;
+
+ sector = src->tracks[i].start;
+ gst_index_add_association (src->index, src->index_id, GST_ASSOCIATION_FLAG_KEY_UNIT, track_format, i, /* here we count from 0 */
+ sector_format, sector,
+ GST_FORMAT_TIME,
+ (gint64) (((CD_FRAMESIZE_RAW >> 2) * sector * GST_SECOND) / 44100),
+ GST_FORMAT_BYTES, (gint64) (sector << 2), GST_FORMAT_DEFAULT,
+ (gint64) ((CD_FRAMESIZE_RAW >> 2) * sector), NULL);
+ }
+}
+
+static void
+gst_cdda_base_src_set_index (GstElement * element, GstIndex * index)
+{
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (element);
+ GstIndex *old;
+
+ GST_OBJECT_LOCK (element);
+ old = src->index;
+ if (old == index) {
+ GST_OBJECT_UNLOCK (element);
+ return;
+ }
+ if (index)
+ gst_object_ref (index);
+ src->index = index;
+ GST_OBJECT_UNLOCK (element);
+ if (old)
+ gst_object_unref (old);
+
+ if (index) {
+ gst_index_get_writer_id (index, GST_OBJECT (src), &src->index_id);
+ gst_index_add_format (index, src->index_id, track_format);
+ gst_index_add_format (index, src->index_id, sector_format);
+ }
+}
+
+
+static GstIndex *
+gst_cdda_base_src_get_index (GstElement * element)
+{
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (element);
+ GstIndex *index;
+
+ GST_OBJECT_LOCK (element);
+ if ((index = src->index))
+ gst_object_ref (index);
+ GST_OBJECT_UNLOCK (element);
+
+ return index;
+}
+
+static gint
+gst_cdda_base_src_track_sort_func (gconstpointer a, gconstpointer b,
+ gpointer foo)
+{
+ GstCddaBaseSrcTrack *track_a = ((GstCddaBaseSrcTrack *) a);
+ GstCddaBaseSrcTrack *track_b = ((GstCddaBaseSrcTrack *) b);
+
+ /* sort data tracks to the end, and audio tracks by track number */
+ if (track_a->is_audio == track_b->is_audio)
+ return (gint) track_a->num - (gint) track_b->num;
+
+ if (track_a->is_audio) {
+ return -1;
+ } else {
+ return 1;
+ }
+}
+
+static gboolean
+gst_cdda_base_src_start (GstBaseSrc * basesrc)
+{
+ GstCddaBaseSrcClass *klass = GST_CDDA_BASE_SRC_GET_CLASS (basesrc);
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (basesrc);
+ gboolean ret;
+ gchar *device = NULL;
+
+ src->discid = 0;
+ src->mb_discid[0] = '\0';
+
+ g_assert (klass->open != NULL);
+
+ if (src->device != NULL) {
+ device = g_strdup (src->device);
+ } else if (klass->get_default_device != NULL) {
+ device = klass->get_default_device (src);
+ }
+
+ if (device == NULL)
+ device = g_strdup (DEFAULT_DEVICE);
+
+ GST_LOG_OBJECT (basesrc, "opening device %s", device);
+
+ src->tags = gst_tag_list_new ();
+
+ ret = klass->open (src, device);
+ g_free (device);
+ device = NULL;
+
+ if (!ret) {
+ GST_DEBUG_OBJECT (basesrc, "failed to open device");
+ /* subclass (should have) posted an error message with the details */
+ gst_cdda_base_src_stop (basesrc);
+ return FALSE;
+ }
+
+ if (src->num_tracks == 0 || src->tracks == NULL) {
+ GST_DEBUG_OBJECT (src, "no tracks");
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
+ (_("This CD has no audio tracks")), (NULL));
+ gst_cdda_base_src_stop (basesrc);
+ return FALSE;
+ }
+
+ /* need to calculate disc IDs before we ditch the data tracks */
+ gst_cdda_base_src_calculate_cddb_id (src);
+ gst_cddabasesrc_calculate_musicbrainz_discid (src);
+
+#if 0
+ /* adjust sector offsets if necessary */
+ if (src->toc_bias) {
+ src->toc_offset -= src->tracks[0].start;
+ }
+ for (i = 0; i < src->num_tracks; ++i) {
+ src->tracks[i].start += src->toc_offset;
+ src->tracks[i].end += src->toc_offset;
+ }
+#endif
+
+ /* now that we calculated the various disc IDs,
+ * sort the data tracks to end and ignore them */
+ src->num_all_tracks = src->num_tracks;
+
+ g_qsort_with_data (src->tracks, src->num_tracks,
+ sizeof (GstCddaBaseSrcTrack), gst_cdda_base_src_track_sort_func, NULL);
+
+ while (src->num_tracks > 0 && !src->tracks[src->num_tracks - 1].is_audio)
+ --src->num_tracks;
+
+ if (src->num_tracks == 0) {
+ GST_DEBUG_OBJECT (src, "no audio tracks");
+ GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
+ (_("This CD has no audio tracks")), (NULL));
+ gst_cdda_base_src_stop (basesrc);
+ return FALSE;
+ }
+
+ gst_cdda_base_src_add_tags (src);
+
+ if (src->index && GST_INDEX_IS_WRITABLE (src->index))
+ gst_cdda_base_src_add_index_associations (src);
+
+ src->cur_track = 0;
+ src->prev_track = -1;
+
+ if (src->uri_track > 0 && src->uri_track <= src->num_tracks) {
+ GST_LOG_OBJECT (src, "seek to track %d", src->uri_track);
+ src->cur_track = src->uri_track - 1;
+ src->uri_track = -1;
+ src->mode = GST_CDDA_BASE_SRC_MODE_NORMAL;
+ }
+
+ src->cur_sector = src->tracks[src->cur_track].start;
+ GST_LOG_OBJECT (src, "starting at sector %d", src->cur_sector);
+
+ gst_cdda_base_src_update_duration (src);
+
+ return TRUE;
+}
+
+static void
+gst_cdda_base_src_clear_tracks (GstCddaBaseSrc * src)
+{
+ if (src->tracks != NULL) {
+ gint i;
+
+ for (i = 0; i < src->num_all_tracks; ++i) {
+ if (src->tracks[i].tags)
+ gst_tag_list_free (src->tracks[i].tags);
+ }
+
+ g_free (src->tracks);
+ src->tracks = NULL;
+ }
+ src->num_tracks = 0;
+ src->num_all_tracks = 0;
+}
+
+static gboolean
+gst_cdda_base_src_stop (GstBaseSrc * basesrc)
+{
+ GstCddaBaseSrcClass *klass = GST_CDDA_BASE_SRC_GET_CLASS (basesrc);
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (basesrc);
+
+ g_assert (klass->close != NULL);
+
+ klass->close (src);
+
+ gst_cdda_base_src_clear_tracks (src);
+
+ if (src->tags) {
+ gst_tag_list_free (src->tags);
+ src->tags = NULL;
+ }
+
+ src->prev_track = -1;
+ src->cur_track = -1;
+
+ return TRUE;
+}
+
+
+static GstFlowReturn
+gst_cdda_base_src_create (GstPushSrc * pushsrc, GstBuffer ** buffer)
+{
+ GstCddaBaseSrcClass *klass = GST_CDDA_BASE_SRC_GET_CLASS (pushsrc);
+ GstCddaBaseSrc *src = GST_CDDA_BASE_SRC (pushsrc);
+ GstBuffer *buf;
+ GstFormat format;
+ gboolean eos;
+
+ GstClockTime position = GST_CLOCK_TIME_NONE;
+ GstClockTime duration = GST_CLOCK_TIME_NONE;
+ gint64 qry_position;
+
+ g_assert (klass->read_sector != NULL);
+
+ switch (src->mode) {
+ case GST_CDDA_BASE_SRC_MODE_NORMAL:
+ eos = (src->cur_sector > src->tracks[src->cur_track].end);
+ break;
+ case GST_CDDA_BASE_SRC_MODE_CONTINUOUS:
+ eos = (src->cur_sector > src->tracks[src->num_tracks - 1].end);
+ src->cur_track = gst_cdda_base_src_get_track_from_sector (src,
+ src->cur_sector);
+ break;
+ default:
+ g_return_val_if_reached (GST_FLOW_ERROR);
+ }
+
+ if (eos) {
+ src->prev_track = -1;
+ GST_DEBUG_OBJECT (src, "EOS at sector %d, cur_track=%d, mode=%d",
+ src->cur_sector, src->cur_track, src->mode);
+ /* base class will send EOS for us */
+ return GST_FLOW_UNEXPECTED;
+ }
+
+ if (src->prev_track != src->cur_track) {
+ GstTagList *tags;
+
+ tags = gst_tag_list_merge (src->tags, src->tracks[src->cur_track].tags,
+ GST_TAG_MERGE_REPLACE);
+ GST_LOG_OBJECT (src, "announcing tags: %" GST_PTR_FORMAT, tags);
+ gst_element_found_tags_for_pad (GST_ELEMENT (src),
+ GST_BASE_SRC_PAD (src), tags);
+ src->prev_track = src->cur_track;
+
+ gst_cdda_base_src_update_duration (src);
+
+ g_object_notify (G_OBJECT (src), "track");
+ }
+
+ GST_LOG_OBJECT (src, "asking for sector %u", src->cur_sector);
+
+ buf = klass->read_sector (src, src->cur_sector);
+
+ if (buf == NULL) {
+ GST_WARNING_OBJECT (src, "failed to read sector %u", src->cur_sector);
+ return GST_FLOW_ERROR;
+ }
+
+ if (GST_BUFFER_CAPS (buf) == NULL) {
+ gst_buffer_set_caps (buf, GST_PAD_CAPS (GST_BASE_SRC_PAD (src)));
+ }
+
+ format = GST_FORMAT_TIME;
+ if (gst_pad_query_position (GST_BASE_SRC_PAD (src), &format, &qry_position)) {
+ gint64 next_ts = 0;
+
+ position = (GstClockTime) qry_position;
+
+ ++src->cur_sector;
+ if (gst_pad_query_position (GST_BASE_SRC_PAD (src), &format, &next_ts)) {
+ duration = (GstClockTime) (next_ts - qry_position);
+ }
+ --src->cur_sector;
+ }
+
+ /* fallback duration: 4 bytes per sample, 44100 samples per second */
+ if (duration == GST_CLOCK_TIME_NONE) {
+ duration = gst_util_uint64_scale_int (GST_BUFFER_SIZE (buf) >> 2,
+ GST_SECOND, 44100);
+ }
+
+ GST_BUFFER_TIMESTAMP (buf) = position;
+ GST_BUFFER_DURATION (buf) = duration;
+
+ GST_LOG_OBJECT (src, "pushing sector %d with timestamp %" GST_TIME_FORMAT,
+ src->cur_sector, GST_TIME_ARGS (position));
+
+ ++src->cur_sector;
+
+ *buffer = buf;
+
+ return GST_FLOW_OK;
+}
projects / mafwsubrenderer / blobdiff