diff options
Diffstat (limited to 'gst-libs/gst/media-info/media-info.c')
| -rw-r--r-- | gst-libs/gst/media-info/media-info.c | 428 |
1 files changed, 0 insertions, 428 deletions
diff --git a/gst-libs/gst/media-info/media-info.c b/gst-libs/gst/media-info/media-info.c deleted file mode 100644 index 16a66250..00000000 --- a/gst-libs/gst/media-info/media-info.c +++ /dev/null @@ -1,428 +0,0 @@ -/* GStreamer media-info library - * Copyright (C) 2003,2004 Thomas Vander Stichele <thomas@apestaart.org> - * - * 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. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include <gst/gst.h> -#include <string.h> -#include "media-info.h" -#include "media-info-priv.h" - -static void gst_media_info_class_init (GstMediaInfoClass * klass); -static void gst_media_info_instance_init (GstMediaInfo * info); - -static void gst_media_info_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec); - - -static gboolean _media_info_inited = FALSE; - -/* FIXME: this is a lousy hack that needs to go */ -#define MAX_METADATA_ITERS 5 - -/* GObject-y bits */ - -/* signal stuff */ -enum -{ - MEDIA_INFO_SIGNAL, - LAST_SIGNAL -}; - -static guint gst_media_info_signals[LAST_SIGNAL] = { 0 }; - -/* - * all GError stuff - */ - -enum -{ - MEDIA_INFO_ERROR_FILE -}; - -/* GError quark stuff */ -GQuark -gst_media_info_error_quark (void) -{ - static GQuark quark = 0; - - if (quark == 0) - quark = g_quark_from_static_string ("gst-media-info-error-quark"); - return quark; -} - -/* - * GObject type stuff - */ - -enum -{ - PROP_SOURCE -}; - -static GObjectClass *parent_class = NULL; - -GST_DEBUG_CATEGORY (gst_media_info_debug); - -/* initialize the media-info library */ -void -gst_media_info_init (void) -{ - if (_media_info_inited) - return; - - /* register our debugging category */ - GST_DEBUG_CATEGORY_INIT (gst_media_info_debug, "GST_MEDIA_INFO", 0, - "GStreamer media-info library"); - GST_DEBUG ("Initialized media-info library"); - _media_info_inited = TRUE; -} - -GType -gst_media_info_get_type (void) -{ - static GType gst_media_info_type = 0; - - if (!gst_media_info_type) { - static const GTypeInfo gst_media_info_info = { - sizeof (GstMediaInfoClass), - (GBaseInitFunc) NULL, - (GBaseFinalizeFunc) NULL, - (GClassInitFunc) gst_media_info_class_init, - NULL, NULL, - sizeof (GstMediaInfo), - 0, - (GInstanceInitFunc) gst_media_info_instance_init, - NULL - }; - - gst_media_info_type = g_type_register_static (G_TYPE_OBJECT, - "GstMediaInfo", &gst_media_info_info, 0); - } - return gst_media_info_type; -} - -static void -gst_media_info_class_init (GstMediaInfoClass * klass) -{ - GObjectClass *g_object_class = G_OBJECT_CLASS (klass); - - parent_class = g_type_class_ref (G_TYPE_OBJECT); - //parent_class = g_type_class_peek_parent (klass); - - - /* - object_class->finalize = gst_media_info_finalize; - object_class->dispose = gst_media_info_dispose; - */ - - /* - g_object_class->set_property = gst_media_info_set_property; - */ - g_object_class->get_property = gst_media_info_get_property; - - klass->media_info_signal = NULL; - - gst_media_info_signals[MEDIA_INFO_SIGNAL] = - g_signal_new ("media-info", - G_TYPE_FROM_CLASS (klass), - G_SIGNAL_RUN_LAST, - G_STRUCT_OFFSET (GstMediaInfoClass, media_info_signal), - NULL, NULL, gst_marshal_VOID__VOID, G_TYPE_NONE, 0); -} - -static void -gst_media_info_instance_init (GstMediaInfo * info) -{ - GError **error; - - info->priv = g_new0 (GstMediaInfoPriv, 1); - error = &info->priv->error; - - if (!_media_info_inited) { - gst_media_info_init (); - } - - gmip_init (info->priv, error); - gmip_reset (info->priv); -} - -/* get/set */ -static void -gst_media_info_get_property (GObject * object, guint prop_id, - GValue * value, GParamSpec * pspec) -{ - GstMediaInfo *info = GST_MEDIA_INFO (object); - - switch (prop_id) { - case PROP_SOURCE: - g_value_set_string (value, info->priv->source_name); - break; - default: - G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); - break; - } -} - -GstMediaInfo * -gst_media_info_new (GError ** error) -{ - GstMediaInfo *info = g_object_new (GST_MEDIA_INFO_TYPE, NULL); - - if (info->priv->error) { - if (error) { - *error = info->priv->error; - info->priv->error = NULL; - } else { - g_warning ("Error creating GstMediaInfo object.\n%s", - info->priv->error->message); - g_error_free (info->priv->error); - } - } - return info; -} - -/** - * public methods - */ -gboolean -gst_media_info_set_source (GstMediaInfo * info, const char *source, - GError ** error) -{ - info->priv->source_name = g_strdup (source); - return TRUE; -} - -/* idler-based implementation - * set up read on a given location - * FIXME: maybe we should check if the info is cleared when calling this - * function ? What happens if it gets called again on same info before - * previous one is done ? - */ -void -gst_media_info_read_with_idler (GstMediaInfo * info, const char *location, - guint16 flags, GError ** error) -{ - GstMediaInfoPriv *priv = info->priv; - - gmip_reset (info->priv); /* reset all structs */ - priv->location = g_strdup (location); - priv->flags = flags; -} - -/* an idler which does the work of actually collecting all data - * this must be called repeatedly, until streamp is set to a non-NULL value - * returns: TRUE if it was able to idle, FALSE if there was an error - */ -gboolean -gst_media_info_read_idler (GstMediaInfo * info, GstMediaInfoStream ** streamp, - GError ** error) -{ - GstMediaInfoPriv *priv; - - /* if it's NULL then we're sure something went wrong higher up) */ - if (info == NULL) - return FALSE; - g_return_val_if_fail (error == NULL || *error == NULL, FALSE); - - priv = info->priv; - - g_assert (streamp != NULL); - g_assert (priv); - - switch (priv->state) { - case GST_MEDIA_INFO_STATE_NULL: - /* make sure we have a source */ - if (!priv->source_name) { - *error = g_error_new (GST_MEDIA_INFO_ERROR, 0, - "No source set on media info."); - return FALSE; - } - - /* need to find type */ - GST_DEBUG ("idler: NULL, need to find type, priv %p", priv); - return gmip_find_type_pre (priv, error); - - case GST_MEDIA_INFO_STATE_TYPEFIND: - { - gchar *mime; - - GST_LOG ("STATE_TYPEFIND"); - if ((priv->type == NULL) && gst_bin_iterate (GST_BIN (priv->pipeline))) { - GST_DEBUG ("iterating while in STATE_TYPEFIND"); - GMI_DEBUG ("?"); - return TRUE; - } - if (priv->type == NULL) { - g_warning ("Couldn't find type\n"); - return FALSE; - } - /* do the state transition */ - GST_DEBUG ("doing find_type_post"); - gmip_find_type_post (priv); - GST_DEBUG ("finding out mime type"); - mime = - g_strdup (gst_structure_get_name (gst_caps_get_structure (priv->type, - 0))); - GST_DEBUG ("found out mime type: %s", mime); - if (!gmi_set_mime (info, mime)) { - /* FIXME: pop up error */ - GST_DEBUG ("no decoder pipeline found for mime %s", mime); - return FALSE; - } - priv->stream = gmi_stream_new (); - GST_DEBUG ("new stream: %p", priv->stream); - priv->stream->mime = mime; - priv->stream->path = priv->location; - - gmip_find_stream_pre (priv); - } - case GST_MEDIA_INFO_STATE_STREAM: - { - GST_LOG ("STATE_STREAM"); - if ((priv->format == NULL) && gst_bin_iterate (GST_BIN (priv->pipeline))) { - GMI_DEBUG ("?"); - return TRUE; - } - if (priv->format == NULL) { - g_warning ("Couldn't find format\n"); - return FALSE; - } - /* do state transition; stream -> first track metadata */ - priv->current_track_num = 0; - gmip_find_stream_post (priv); - priv->current_track = gmi_track_new (); - gmip_find_track_metadata_pre (priv); - return TRUE; - } - /* these ones are repeated per track */ - case GST_MEDIA_INFO_STATE_METADATA: - { - if ((priv->metadata == NULL) && - gst_bin_iterate (GST_BIN (priv->pipeline)) && - priv->metadata_iters < MAX_METADATA_ITERS) { - GMI_DEBUG ("?"); - priv->metadata_iters++; - return TRUE; - } - if (priv->metadata_iters == MAX_METADATA_ITERS) - g_print ("iterated a few times, didn't find metadata\n"); - if (priv->metadata == NULL) { - /* this is not a permanent failure */ - GST_DEBUG ("Couldn't find metadata"); - } - GST_DEBUG ("found metadata of track %ld", priv->current_track_num); - if (!gmip_find_track_metadata_post (priv)) - return FALSE; - GST_DEBUG ("METADATA: going to STREAMINFO\n"); - priv->state = GST_MEDIA_INFO_STATE_STREAMINFO; - return gmip_find_track_streaminfo_pre (priv); - } - case GST_MEDIA_INFO_STATE_STREAMINFO: - { - if ((priv->streaminfo == NULL) && - gst_bin_iterate (GST_BIN (priv->pipeline))) { - GMI_DEBUG ("?"); - return TRUE; - } - if (priv->streaminfo == NULL) { - /* this is not a permanent failure */ - GST_DEBUG ("Couldn't find streaminfo"); - } else - GST_DEBUG ("found streaminfo of track %ld", priv->current_track_num); - if (!gmip_find_track_streaminfo_post (priv)) - return FALSE; - priv->state = GST_MEDIA_INFO_STATE_FORMAT; - return gmip_find_track_format_pre (priv); - } - case GST_MEDIA_INFO_STATE_FORMAT: - { - if ((priv->format == NULL) && gst_bin_iterate (GST_BIN (priv->pipeline))) { - GMI_DEBUG ("?"); - return TRUE; - } - if (priv->format == NULL) { - g_warning ("Couldn't find format\n"); - return FALSE; - } - GST_DEBUG ("found format of track %ld", priv->current_track_num); - if (!gmip_find_track_format_post (priv)) - return FALSE; - /* save the track info */ - priv->stream->tracks = g_list_append (priv->stream->tracks, - priv->current_track); - /* these alloc'd data types have been handed off */ - priv->current_track = NULL; - priv->location = NULL; - /* now see if we need to seek to a next track or not */ - priv->current_track_num++; - if (priv->current_track_num < priv->stream->length_tracks) { - gmi_seek_to_track (info, priv->current_track_num); - priv->current_track = gmi_track_new (); - if (!gmip_find_track_metadata_pre (priv)) { - g_free (priv->current_track); - return FALSE; - } - priv->state = GST_MEDIA_INFO_STATE_METADATA; - return TRUE; - } - priv->state = GST_MEDIA_INFO_STATE_DONE; - gmi_clear_decoder (info); - GST_DEBUG ("TOTALLY DONE, setting pointer *streamp to %p", *streamp); - *streamp = priv->stream; - priv->stream = NULL; - return TRUE; - } - case GST_MEDIA_INFO_STATE_DONE: - return TRUE; - default: - g_warning ("don't know what to do\n"); - return FALSE; - } -} - -/* main function - * read all possible info from the file pointed to by location - * use flags to limit the type of information searched for */ -GstMediaInfoStream * -gst_media_info_read (GstMediaInfo * info, const char *location, guint16 flags, - GError ** error) -{ - GstMediaInfoStream *stream = NULL; - - gst_media_info_read_with_idler (info, location, flags, error); - if (*error) - return FALSE; - while (gst_media_info_read_idler (info, &stream, error) && stream == NULL) - /* keep looping */ ; - if (*error) - return NULL; - - return stream; -} - - -/* - * FIXME: reset ? -gboolean gst_media_info_write (GstMediaInfo *media_info, - const char *location, - GstCaps *media_info); - */ |