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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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media info lib
Original commit message from CVS: media info lib
This commit is contained in:
Thomas Vander Stichele
parent
9feaf4a8b7
commit
18d96e16ec
4 changed files with 1045 additions and 0 deletions
17
gst-libs/gst/media-info/Makefile.am
Normal file
17
gst-libs/gst/media-info/Makefile.am
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@ -0,0 +1,17 @@
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librarydir = $(libdir)
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library_LTLIBRARIES = libgstmedia-info.la
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libgstmedia_info_la_SOURCES = media-info.c
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libincludedir = $(includedir)/@PACKAGE@-@VERSION@/gst/media-info
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libinclude_HEADERS = media-info.h
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libgstmedia_info_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGIN_CFLAGS)
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libgstmedia_info_la_LIBADD = $(GST_LIBS) $(GST_PLUGIN_LIBS)
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noinst_PROGRAMS = media-info-test
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media_info_test_SOURCES = media-info-test.c
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media_info_test_CFLAGS = $(GST_CFLAGS)
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media_info_test_LDADD = $(GST_LIBS) libgstmedia-info.la
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107
gst-libs/gst/media-info/media-info-test.c
Normal file
107
gst-libs/gst/media-info/media-info-test.c
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@ -0,0 +1,107 @@
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/* media-info test app */
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#include <gst/gst.h>
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#include <string.h>
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#include "media-info.h"
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static void
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caps_print (GstCaps *caps)
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{
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if (caps == NULL) return;
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/*
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if (!strcmp (gst_caps_get_mime (caps), "application/x-gst-metadata") ||
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!strcmp (gst_caps_get_mime (caps), "application/x-gst-streaminfo"))
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*/
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if (TRUE)
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{
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GstProps *props = caps->properties;
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GList *walk;
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if (props == NULL)
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{
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g_print (" none\n");
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return;
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}
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walk = props->properties;
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while (walk) {
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GstPropsEntry *entry = (GstPropsEntry *) walk->data;
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const gchar *name;
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const gchar *str_val;
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gint int_val;
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GstPropsType type;
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name = gst_props_entry_get_name (entry);
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type = gst_props_entry_get_type (entry);
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switch (type) {
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case GST_PROPS_STRING_TYPE:
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gst_props_entry_get_string (entry, &str_val);
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g_print (" %s='%s'\n", name, str_val);
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break;
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case GST_PROPS_INT_TYPE:
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gst_props_entry_get_int (entry, &int_val);
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g_print (" %s=%d\n", name, int_val);
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break;
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default:
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break;
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}
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walk = g_list_next (walk);
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}
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}
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else {
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g_print (" unkown caps type\n");
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}
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}
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static void
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info_print (GstMediaInfoStream *stream)
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{
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int i;
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GList *p;
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GstMediaInfoTrack *track;
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g_print ("- mime type: %s\n", stream->mime);
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g_print ("- length: %.3f seconds\n",
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(gdouble) stream->length_time / GST_SECOND);
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g_print ("- bitrate: %.3f kbps\n", stream->bitrate / 1000.0);
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g_print ("- number of tracks: %ld\n", stream->length_tracks);
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p = stream->tracks;
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for (i = 0; i < stream->length_tracks; ++i)
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{
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g_print ("- track %d\n", i);
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track = (GstMediaInfoTrack *) p->data;
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g_print (" - metadata:\n");
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caps_print (track->metadata);
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g_print (" - streaminfo:\n");
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caps_print (track->streaminfo);
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g_print (" - format:\n");
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caps_print (track->format);
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p = p->next;
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}
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}
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int
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main (int argc, char *argv[])
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{
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GstMediaInfo *info;
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GstMediaInfoStream *stream;
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gint i;
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g_assert (argc > 1);
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gst_init (&argc, &argv);
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info = g_object_new (GST_MEDIA_INFO_TYPE, NULL);
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for (i = 1; i < argc; ++i)
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{
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stream = gst_media_info_read (info, argv[i], GST_MEDIA_INFO_ALL);
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g_print ("\nFILE: %s\n", argv[i]);
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if (stream)
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info_print (stream);
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else
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g_print ("no media info found.\n");
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}
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return 0;
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}
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806
gst-libs/gst/media-info/media-info.c
Normal file
806
gst-libs/gst/media-info/media-info.c
Normal file
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@ -0,0 +1,806 @@
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <gst/gst.h>
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#include <string.h>
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#include "media-info.h"
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static gboolean _gst_media_info_debug = FALSE;
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#define GMI_DEBUG(format, args...) \
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{ if (_gst_media_info_debug) { g_print ( format , ## args ); }}
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struct GstMediaInfoPriv
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{
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GstElement *pipeline;
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GstElement *typefind;
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GstCaps *type;
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GstPad *decoder_pad; /* pad for querying decoded caps */
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GstPad *source_pad; /* pad for querying encoded caps */
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GstCaps *format;
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GstCaps *metadata;
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GstCaps *streaminfo;
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GstElement *decoder; /* will be != NULL during collection */
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gchar *source_element; /* type of element used as source */
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GstElement *source;
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GHashTable *decoders; /* a table of decoder GstElements */
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GstMediaInfoStream *stream; /* total stream properties */
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char *cache; /* location of cache */
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};
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static void gst_media_info_class_init (GstMediaInfoClass *klass);
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static void gst_media_info_instance_init (GstMediaInfo *info);
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static void gst_media_info_get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec);
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static void gst_media_info_reset (GstMediaInfo *info);
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static void deep_notify_callback (GObject *object, GstObject *origin,
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GParamSpec *pspec, GstMediaInfo *info);
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/* helper structs bits */
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static GstMediaInfoStream *
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gst_media_info_stream_new (void)
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{
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GstMediaInfoStream *stream;
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stream = g_malloc (sizeof (GstMediaInfoStream));
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stream->length_tracks = 0;
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stream->length_time = 0;
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stream->bitrate = 0;
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stream->seekable = FALSE;
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stream->path = NULL;
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stream->mime = NULL;
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stream->tracks = NULL;
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return stream;
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}
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static void
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gst_media_info_stream_free (GstMediaInfoStream *stream)
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{
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if (stream->mime) g_free (stream->mime);
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/* FIXME: free tracks */
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g_free (stream);
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}
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static GstMediaInfoTrack *
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gst_media_info_track_new (void)
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{
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GstMediaInfoTrack *track;
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track = g_malloc (sizeof (GstMediaInfoTrack));
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track->metadata = NULL;
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track->streaminfo = NULL;
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track->format = NULL;
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track->length_time = 0;
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track->con_streams = NULL;
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return track;
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}
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/* GObject-y bits */
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/* signal stuff */
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enum
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{
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MEDIA_INFO_SIGNAL,
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LAST_SIGNAL
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};
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static guint gst_media_info_signals[LAST_SIGNAL] = { 0 };
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/* GError stuff */
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/*
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enum
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{
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MEDIA_INFO_ERROR_FILE
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};
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*/
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/* GError quark stuff */
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/*
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static GQuark
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gst_media_info_error_quark (void)
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{
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static GQuark quark = 0;
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if (quark == 0)
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quark = g_quark_from_static_string ("gst-media-info-error-quark");
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return quark;
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}
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*/
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/*
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* GObject type stuff
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*/
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enum
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{
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PROP_SOURCE
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};
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static GObjectClass *parent_class = NULL;
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GType
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gst_media_info_get_type (void)
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{
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static GType gst_media_info_type = 0;
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if (!gst_media_info_type)
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{
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static const GTypeInfo gst_media_info_info = {
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sizeof (GstMediaInfoClass),
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(GBaseInitFunc) NULL,
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(GBaseFinalizeFunc) NULL,
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(GClassInitFunc) gst_media_info_class_init,
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NULL, NULL,
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sizeof (GstMediaInfo),
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0,
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(GInstanceInitFunc) gst_media_info_instance_init,
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NULL
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};
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gst_media_info_type = g_type_register_static (G_TYPE_OBJECT,
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"GstMediaInfo",
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&gst_media_info_info, 0);
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}
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return gst_media_info_type;
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}
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static void
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gst_media_info_class_init (GstMediaInfoClass *klass)
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{
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GObjectClass *g_object_class = G_OBJECT_CLASS (klass);
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parent_class = g_type_class_ref (G_TYPE_OBJECT);
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//parent_class = g_type_class_peek_parent (klass);
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/*
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object_class->finalize = gst_media_info_finalize;
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object_class->dispose = gst_media_info_dispose;
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*/
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/*
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g_object_class->set_property = gst_media_info_set_property;
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*/
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g_object_class->get_property = gst_media_info_get_property;
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klass->media_info_signal = NULL;
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gst_media_info_signals [MEDIA_INFO_SIGNAL] =
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g_signal_new ("media-info",
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G_TYPE_FROM_CLASS (klass),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (GstMediaInfoClass, media_info_signal),
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NULL, NULL,
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gst_marshal_VOID__VOID,
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G_TYPE_NONE, 0);
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}
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static void
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gst_media_info_instance_init (GstMediaInfo *info)
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{
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GstElement *source;
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info->priv = g_new0 (GstMediaInfoPriv, 1);
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info->priv->pipeline = gst_pipeline_new ("media-info");
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info->priv->typefind = gst_element_factory_make ("typefind", "typefind");
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if (!GST_IS_ELEMENT (info->priv->typefind))
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/* FIXME */
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g_error ("Cannot create typefind element !");
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/* ref it so it never goes away on removal out of bins */
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gst_object_ref (GST_OBJECT (info->priv->typefind));
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/* use gnomevfssrc by default */
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source = gst_element_factory_make ("gnomevfssrc", "source");
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if (GST_IS_ELEMENT (source))
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{
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info->priv->source = source;
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info->priv->source_element = g_strdup ("gnomevfssrc");
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gst_bin_add (GST_BIN (info->priv->pipeline), info->priv->source);
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}
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else
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{
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info->priv->source = NULL;
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info->priv->source_element = NULL;
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}
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info->priv->decoder = NULL;
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info->priv->type = NULL;
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info->priv->format = NULL;
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info->priv->metadata = NULL;
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/* clear result pointers */
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info->priv->stream = NULL;
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/* set up decoder hash table */
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info->priv->decoders = g_hash_table_new (g_str_hash, g_str_equal);
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/* attach notify handler */
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g_signal_connect (G_OBJECT (info->priv->pipeline), "deep_notify",
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G_CALLBACK (deep_notify_callback), info);
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}
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/* get/set */
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static void
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gst_media_info_get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec)
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{
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GstMediaInfo *info = GST_MEDIA_INFO (object);
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switch (prop_id)
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{
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case PROP_SOURCE:
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g_value_set_string (value, info->priv->source_element);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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/**
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* private functions
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*/
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/* callbacks */
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static void
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have_type_callback (GstElement *typefind, GstCaps *type, GstMediaInfo *info)
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{
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info->priv->type = type;
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}
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static void
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deep_notify_callback (GObject *object, GstObject *origin,
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GParamSpec *pspec, GstMediaInfo *info)
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{
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GValue value = { 0, };
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if (strcmp (pspec->name, "metadata") == 0)
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{
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GMI_DEBUG("DEBUG: deep_notify: have metadata !\n");
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g_value_init (&value, pspec->value_type);
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g_object_get_property (G_OBJECT (origin), pspec->name, &value);
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info->priv->metadata = g_value_peek_pointer (&value);
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}
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else if (strcmp (pspec->name, "caps") == 0)
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{
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/* check if we're getting it from the source we want it from */
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if (GST_IS_PAD (origin) && GST_PAD (origin) == info->priv->decoder_pad)
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{
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GMI_DEBUG("DEBUG: deep_notify: have caps on decoder_pad !\n");
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g_value_init (&value, pspec->value_type);
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g_object_get_property (G_OBJECT (origin), pspec->name, &value);
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info->priv->format = g_value_peek_pointer (&value);
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}
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else GMI_DEBUG("DEBUG: igoring caps on object %s:%s\n",
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gst_object_get_name (gst_object_get_parent (origin)),
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gst_object_get_name (origin));
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}
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else if (strcmp (pspec->name, "offset") == 0)
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{
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/* we REALLY ignore offsets, we hate them */
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}
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else if (strcmp (pspec->name, "streaminfo") == 0)
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{
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GMI_DEBUG("DEBUG: deep_notify: have streaminfo !\n");
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g_value_init (&value, pspec->value_type);
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g_object_get_property (G_OBJECT (origin), pspec->name, &value);
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info->priv->streaminfo = g_value_peek_pointer (&value);
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}
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else GMI_DEBUG("DEBUG: ignoring notify of %s\n", pspec->name);
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}
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/* helpers */
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/* reset info to a state where it can be used to query for media info
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* clear caps, metadata, and so on */
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static void
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gst_media_info_reset (GstMediaInfo *info)
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{
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GstMediaInfoPriv *priv = info->priv;
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/* clear out some stuff */
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if (priv->format)
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{
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gst_caps_unref (priv->format);
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priv->format = NULL;
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}
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if (priv->metadata)
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{
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gst_caps_unref (priv->metadata);
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priv->metadata = NULL;
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}
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if (priv->stream)
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{
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g_free (priv->stream);
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priv->stream = NULL;
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}
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}
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/* seek to a track and reset metadata and streaminfo structs */
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static gboolean
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gst_media_info_seek_to_track (GstMediaInfo *info, long track)
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{
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GstEvent *event;
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GstFormat track_format = 0;
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GstMediaInfoPriv *priv = info->priv;
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gboolean res;
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/* FIXME: consider more nicks as "track" */
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track_format = gst_format_get_by_nick ("logical_stream");
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if (track_format == 0) return FALSE;
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GMI_DEBUG("Track format: %d\n", track_format);
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if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
|
||||
== GST_STATE_FAILURE)
|
||||
g_warning ("Couldn't set to play");
|
||||
g_assert (GST_IS_PAD (info->priv->decoder_pad));
|
||||
event = gst_event_new_seek (track_format |
|
||||
GST_SEEK_METHOD_SET |
|
||||
GST_SEEK_FLAG_FLUSH,
|
||||
track);
|
||||
res = gst_pad_send_event (info->priv->decoder_pad, event);
|
||||
g_assert (res);
|
||||
if (!res)
|
||||
{
|
||||
g_warning ("seek to logical track failed");
|
||||
return FALSE;
|
||||
}
|
||||
/* clear structs because of the seek */
|
||||
if (priv->metadata)
|
||||
{
|
||||
gst_caps_unref (priv->metadata);
|
||||
priv->metadata = NULL;
|
||||
}
|
||||
if (priv->streaminfo)
|
||||
{
|
||||
gst_caps_unref (priv->streaminfo);
|
||||
priv->streaminfo = NULL;
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* create a good decoder for this mime type */
|
||||
/* FIXME: maybe make this more generic with a type, so it can be used
|
||||
* for taggers and other things as well */
|
||||
GstElement *
|
||||
gst_media_info_get_decoder (GstMediaInfo *info, const char *mime)
|
||||
{
|
||||
GstElement *decoder;
|
||||
gchar *factory = NULL;
|
||||
|
||||
/* check if we have an active codec element in the hash table for this */
|
||||
decoder = g_hash_table_lookup (info->priv->decoders, mime);
|
||||
if (decoder == NULL)
|
||||
{
|
||||
GMI_DEBUG("DEBUG: no decoder in table, inserting one\n");
|
||||
if (strcmp (mime, "application/x-ogg") == 0)
|
||||
factory = g_strdup ("vorbisfile");
|
||||
else if (strcmp (mime, "audio/mp3") == 0)
|
||||
factory = g_strdup ("mad");
|
||||
else if (strcmp (mime, "audio/x-wav") == 0)
|
||||
factory = g_strdup ("wavparse");
|
||||
|
||||
if (factory == NULL)
|
||||
return NULL;
|
||||
|
||||
GMI_DEBUG("DEBUG: using factory %s\n", factory);
|
||||
decoder = gst_element_factory_make (factory, "decoder");
|
||||
g_free (factory);
|
||||
|
||||
if (decoder)
|
||||
{
|
||||
g_hash_table_insert (info->priv->decoders, g_strdup (mime), decoder);
|
||||
/* ref it so we don't lose it when removing from bin */
|
||||
g_object_ref (GST_OBJECT (decoder));
|
||||
}
|
||||
}
|
||||
|
||||
return decoder;
|
||||
}
|
||||
|
||||
/* find the type of a file and store it in the caps of the info
|
||||
* FIXME: we might better return GstCaps instead of storing them
|
||||
* internally */
|
||||
static void
|
||||
gst_media_info_find_type (GstMediaInfo *info, const char *location)
|
||||
{
|
||||
GstMediaInfoPriv *priv = info->priv;
|
||||
|
||||
/* clear vars that need clearing */
|
||||
if (priv->type)
|
||||
{
|
||||
gst_caps_unref (priv->type);
|
||||
priv->type = NULL;
|
||||
}
|
||||
|
||||
GMI_DEBUG("DEBUG: gst_media_info_find_type: start\n");
|
||||
/* find out type */
|
||||
/* FIXME: we could move caps for typefind out of struct and
|
||||
* just use it through this function only */
|
||||
|
||||
gst_bin_add (GST_BIN (priv->pipeline), priv->typefind);
|
||||
g_object_set (G_OBJECT (priv->source), "location", location, NULL);
|
||||
if (!gst_element_connect (priv->source, priv->typefind))
|
||||
g_warning ("Couldn't connect source and typefind\n");
|
||||
g_signal_connect (G_OBJECT (priv->typefind), "have-type",
|
||||
G_CALLBACK (have_type_callback), info);
|
||||
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
|
||||
== GST_STATE_FAILURE)
|
||||
g_warning ("Couldn't set to play");
|
||||
GMI_DEBUG("DEBUG: gst_media_info_find_type: iterating\n");
|
||||
while ((priv->type == NULL) &&
|
||||
gst_bin_iterate (GST_BIN (priv->pipeline)))
|
||||
GMI_DEBUG("+");
|
||||
GMI_DEBUG("\n");
|
||||
|
||||
/*clear up typefind */
|
||||
gst_element_set_state (priv->pipeline, GST_STATE_READY);
|
||||
gst_element_disconnect (priv->source, priv->typefind);
|
||||
gst_bin_remove (GST_BIN (priv->pipeline), priv->typefind);
|
||||
}
|
||||
/* get properties of complete physical stream
|
||||
* and return them in pre-alloced stream struct */
|
||||
static gboolean
|
||||
gst_media_info_get_stream (GstMediaInfo *info, GstMediaInfoStream *stream)
|
||||
{
|
||||
GstMediaInfoPriv *priv = info->priv;
|
||||
const GstFormat *formats;
|
||||
GstFormat track_format = 0;
|
||||
GstFormat format;
|
||||
gint64 value;
|
||||
gboolean res;
|
||||
glong bytes = 0;
|
||||
|
||||
GMI_DEBUG("DEBUG:gst_media_info_get_stream start\n");
|
||||
|
||||
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
|
||||
== GST_STATE_FAILURE)
|
||||
g_warning ("Couldn't set to play");
|
||||
/* iterate until caps are found */
|
||||
/* FIXME: this should be done through the plugin sending some signal
|
||||
* that it is ready for queries */
|
||||
while (gst_bin_iterate (GST_BIN (priv->pipeline)) &&
|
||||
priv->format == NULL)
|
||||
;
|
||||
if (gst_element_set_state (priv->pipeline, GST_STATE_PAUSED)
|
||||
== GST_STATE_FAILURE)
|
||||
g_warning ("Couldn't set to paused");
|
||||
if (priv->format == NULL)
|
||||
{
|
||||
GMI_DEBUG("DEBUG: gst_media_info_get_stream: couldn't get caps !");
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
/* find a format that matches the "track" concept */
|
||||
/* FIXME: this is used in vorbis, but we might have to loop when
|
||||
* more codecs have tracks */
|
||||
track_format = gst_format_get_by_nick ("logical_stream");
|
||||
|
||||
/* get supported formats on decoder pad */
|
||||
formats = gst_pad_get_formats (priv->decoder_pad);
|
||||
while (*formats)
|
||||
{
|
||||
const GstFormatDefinition *definition;
|
||||
|
||||
format = *formats;
|
||||
|
||||
g_assert (GST_IS_PAD (priv->decoder_pad));
|
||||
res = gst_pad_query (priv->decoder_pad, GST_PAD_QUERY_TOTAL,
|
||||
&format, &value);
|
||||
|
||||
definition = gst_format_get_details (*formats);
|
||||
GMI_DEBUG("trying to figure out length for format %s\n", definition->nick);
|
||||
|
||||
if (res)
|
||||
{
|
||||
switch (format)
|
||||
{
|
||||
case GST_FORMAT_TIME:
|
||||
stream->length_time = value;
|
||||
g_print (" total %s: %lld\n", definition->nick, value);
|
||||
break;
|
||||
default:
|
||||
/* separation is necessary because track_format doesn't resolve to
|
||||
* int */
|
||||
if (format == track_format)
|
||||
{
|
||||
stream->length_tracks = value;
|
||||
g_print (" total %s: %lld\n", definition->nick, value);
|
||||
}
|
||||
else
|
||||
g_print ("warning: unhandled format %s\n", definition->nick);
|
||||
}
|
||||
}
|
||||
else
|
||||
GMI_DEBUG("query didn't return result for %s\n", definition->nick);
|
||||
|
||||
formats++;
|
||||
}
|
||||
if (stream->length_tracks == 0) stream->length_tracks = 1;
|
||||
/* now get number of bytes from the sink pad to get the bitrate */
|
||||
format = GST_FORMAT_BYTES;
|
||||
g_assert (GST_IS_PAD (priv->source_pad));
|
||||
res = gst_pad_query (priv->source_pad, GST_PAD_QUERY_TOTAL,
|
||||
&format, &value);
|
||||
if (!res) g_warning ("Failed to query on sink pad !");
|
||||
bytes = value;
|
||||
|
||||
if (bytes)
|
||||
{
|
||||
double seconds = stream->length_time / GST_SECOND;
|
||||
double bits = bytes * 8;
|
||||
stream->bitrate = (long) (bits / seconds);
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* find metadata encoded in media */
|
||||
GstCaps *
|
||||
gst_media_info_find_metadata (GstMediaInfo *info)
|
||||
{
|
||||
GstMediaInfoPriv *priv = info->priv;
|
||||
GstCaps *metadata;
|
||||
|
||||
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
|
||||
== GST_STATE_FAILURE)
|
||||
g_warning ("Couldn't set to play");
|
||||
GMI_DEBUG("DEBUG: gst_media_info_find_metadata: iterating\n");
|
||||
while ((priv->metadata == NULL) &&
|
||||
gst_bin_iterate (GST_BIN (priv->pipeline)))
|
||||
GMI_DEBUG("+");
|
||||
GMI_DEBUG("\n");
|
||||
gst_element_set_state (priv->pipeline, GST_STATE_PAUSED);
|
||||
metadata = priv->metadata;
|
||||
priv->metadata = NULL;
|
||||
return metadata;
|
||||
}
|
||||
|
||||
/* find streaminfo found by decoder */
|
||||
GstCaps *
|
||||
gst_media_info_find_streaminfo (GstMediaInfo *info)
|
||||
{
|
||||
GstMediaInfoPriv *priv = info->priv;
|
||||
GstCaps *streaminfo;
|
||||
GstFormat format, track_format;
|
||||
|
||||
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
|
||||
== GST_STATE_FAILURE)
|
||||
g_warning ("Couldn't set to play");
|
||||
GMI_DEBUG("DEBUG: gst_media_info_find_streaminfo: iterating\n");
|
||||
while ((priv->streaminfo == NULL) &&
|
||||
gst_bin_iterate (GST_BIN (priv->pipeline)))
|
||||
GMI_DEBUG("+");
|
||||
GMI_DEBUG("\n");
|
||||
gst_element_set_state (priv->pipeline, GST_STATE_PAUSED);
|
||||
streaminfo = priv->streaminfo;
|
||||
priv->streaminfo = NULL;
|
||||
|
||||
/* now add total length to this, and maybe even bitrate ? FIXME */
|
||||
track_format = gst_format_get_by_nick ("logical_stream");
|
||||
if (track_format == 0)
|
||||
{
|
||||
g_print ("FIXME: implement getting length of whole track\n");
|
||||
}
|
||||
else
|
||||
{
|
||||
/* which one are we at ? */
|
||||
long track_num;
|
||||
gint64 value_start, value_end;
|
||||
gboolean res;
|
||||
|
||||
res = gst_pad_query (priv->decoder_pad, GST_PAD_QUERY_POSITION,
|
||||
&track_format, &value_start);
|
||||
if (res)
|
||||
{
|
||||
format = GST_FORMAT_TIME;
|
||||
track_num = value_start;
|
||||
GMI_DEBUG("DEBUG: we are currently at %ld\n", track_num);
|
||||
res = gst_pad_convert (priv->decoder_pad,
|
||||
track_format, track_num,
|
||||
&format, &value_start);
|
||||
res &= gst_pad_convert (priv->decoder_pad,
|
||||
track_format, track_num + 1,
|
||||
&format, &value_end);
|
||||
if (res)
|
||||
{
|
||||
GstPropsEntry *length;
|
||||
/* substract to get the length */
|
||||
GMI_DEBUG("DEBUG: start %lld, end %lld\n", value_start, value_end);
|
||||
value_end -= value_start;
|
||||
length = gst_props_entry_new ("length", GST_PROPS_INT ((int) value_end));
|
||||
gst_props_add_entry (gst_caps_get_props (streaminfo), length);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return streaminfo;
|
||||
}
|
||||
|
||||
/* find format found by decoder */
|
||||
GstCaps *
|
||||
gst_media_info_find_format (GstMediaInfo *info)
|
||||
{
|
||||
GstMediaInfoPriv *priv = info->priv;
|
||||
GstCaps *format;
|
||||
|
||||
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
|
||||
== GST_STATE_FAILURE)
|
||||
g_warning ("Couldn't set to play");
|
||||
GMI_DEBUG("DEBUG: gst_media_info_find_format: iterating\n");
|
||||
while ((priv->format == NULL) &&
|
||||
gst_bin_iterate (GST_BIN (priv->pipeline)))
|
||||
GMI_DEBUG("+");
|
||||
GMI_DEBUG("\n");
|
||||
gst_element_set_state (priv->pipeline, GST_STATE_PAUSED);
|
||||
format = priv->format;
|
||||
priv->format = NULL;
|
||||
return format;
|
||||
}
|
||||
|
||||
/* clear the decoder
|
||||
* (if it was set)
|
||||
*/
|
||||
static void
|
||||
gst_media_info_clear_decoder (GstMediaInfo *info)
|
||||
{
|
||||
if (info->priv->decoder)
|
||||
{
|
||||
/* clear up decoder */
|
||||
/* FIXME: shouldn't need to set state here */
|
||||
gst_element_set_state (info->priv->pipeline, GST_STATE_READY);
|
||||
gst_element_disconnect (info->priv->source, info->priv->decoder);
|
||||
gst_bin_remove (GST_BIN (info->priv->pipeline), info->priv->decoder);
|
||||
info->priv->decoder = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
/* set the decoder to be used for decoding
|
||||
* install callback handlers
|
||||
*/
|
||||
|
||||
static void
|
||||
gst_media_info_set_decoder (GstMediaInfo *info, GstElement *decoder)
|
||||
{
|
||||
GstMediaInfoPriv *priv = info->priv;
|
||||
|
||||
/* set up pipeline and connect signal handlers */
|
||||
priv->decoder = decoder;
|
||||
gst_bin_add (GST_BIN (priv->pipeline), decoder);
|
||||
if (!gst_element_connect (priv->source, decoder))
|
||||
g_warning ("Couldn't connect source and decoder\n");
|
||||
/* FIXME: we should be connecting to ALL possible src pads */
|
||||
if (!(priv->decoder_pad = gst_element_get_pad (decoder, "src")))
|
||||
g_warning ("Couldn't get decoder pad\n");
|
||||
if (!(priv->source_pad = gst_element_get_pad (priv->source, "src")))
|
||||
g_warning ("Couldn't get source pad\n");
|
||||
}
|
||||
|
||||
/**
|
||||
* public methods
|
||||
*/
|
||||
gboolean
|
||||
gst_media_info_set_source (GstMediaInfo *info, const char *source)
|
||||
{
|
||||
GstElement *src;
|
||||
src = gst_element_factory_make (source, "new-source");
|
||||
if (!GST_IS_ELEMENT (src))
|
||||
return FALSE;
|
||||
|
||||
if (info->priv->source)
|
||||
{
|
||||
/* this also unrefs the element */
|
||||
gst_bin_remove (GST_BIN (info->priv->pipeline), info->priv->source);
|
||||
if (info->priv->source_element)
|
||||
{
|
||||
g_free (info->priv->source_element);
|
||||
info->priv->source_element = NULL;
|
||||
}
|
||||
}
|
||||
g_object_set (G_OBJECT (src), "name", "source", NULL);
|
||||
gst_bin_add (GST_BIN (info->priv->pipeline), src);
|
||||
info->priv->source = src;
|
||||
info->priv->source_element = g_strdup (source);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
GstMediaInfoStream *
|
||||
gst_media_info_read (GstMediaInfo *info, const char *location, guint16 flags)
|
||||
{
|
||||
GstMediaInfoPriv *priv = info->priv;
|
||||
GstElement *decoder = NULL;
|
||||
const gchar *mime;
|
||||
GstMediaInfoStream *stream = NULL;
|
||||
int i;
|
||||
|
||||
GMI_DEBUG("DEBUG: gst_media_info_read: start\n");
|
||||
gst_media_info_reset (info); /* reset all structs */
|
||||
/* find out type */
|
||||
/* FIXME: we could move caps for typefind out of struct and
|
||||
* just use it through this function only */
|
||||
gst_media_info_find_type (info, location);
|
||||
|
||||
if (priv->type == NULL)
|
||||
{
|
||||
/* iteration ended, still don't have type, ugh */
|
||||
g_warning ("iteration ended, type not found !\n");
|
||||
return NULL;
|
||||
}
|
||||
stream = gst_media_info_stream_new ();
|
||||
mime = gst_caps_get_mime (priv->type);
|
||||
if (flags & GST_MEDIA_INFO_MIME)
|
||||
stream->mime = g_strdup (mime);
|
||||
stream->path = g_strdup (location);
|
||||
GMI_DEBUG("mime type: %s\n", mime);
|
||||
decoder = gst_media_info_get_decoder (info, mime);
|
||||
|
||||
/* if it's NULL, then that's a sign we can't decode it */
|
||||
if (decoder == NULL)
|
||||
{
|
||||
g_warning ("Can't find a decoder for type %s\n", mime);
|
||||
gst_media_info_stream_free (stream);
|
||||
return NULL;
|
||||
}
|
||||
/* install this decoder in the pipeline */
|
||||
gst_media_info_set_decoder (info, decoder);
|
||||
|
||||
/* collect total stream properties */
|
||||
gst_media_info_get_stream (info, stream);
|
||||
|
||||
/* if we have multiple tracks, loop over them; if not, just get
|
||||
* metadata and return it */
|
||||
GMI_DEBUG("DEBUG: num tracks %ld\n", stream->length_tracks);
|
||||
for (i = 0; i < stream->length_tracks; ++i)
|
||||
{
|
||||
GstMediaInfoTrack *track = gst_media_info_track_new ();
|
||||
if (i > 0)
|
||||
{
|
||||
GMI_DEBUG("seeking to track %d\n", i);
|
||||
gst_media_info_seek_to_track (info, i);
|
||||
}
|
||||
if (flags & GST_MEDIA_INFO_METADATA)
|
||||
track->metadata = gst_media_info_find_metadata (info);
|
||||
if (flags & GST_MEDIA_INFO_STREAMINFO)
|
||||
track->streaminfo = gst_media_info_find_streaminfo (info);
|
||||
if (flags & GST_MEDIA_INFO_FORMAT)
|
||||
track->format = gst_media_info_find_format (info);
|
||||
stream->tracks = g_list_append (stream->tracks, track);
|
||||
}
|
||||
|
||||
gst_media_info_clear_decoder (info);
|
||||
/* please return it */
|
||||
return stream;
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* FIXME: reset ?
|
||||
gboolean gst_media_info_write (GstMediaInfo *media_info,
|
||||
const char *location,
|
||||
GstCaps *media_info);
|
||||
*/
|
||||
|
||||
115
gst-libs/gst/media-info/media-info.h
Normal file
115
gst-libs/gst/media-info/media-info.h
Normal file
|
|
@ -0,0 +1,115 @@
|
|||
/* GStreamer
|
||||
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
|
||||
#ifndef __GST_MEDIA_INFO_H__
|
||||
#define __GST_MEDIA_INFO_H__
|
||||
|
||||
#include <gst/gst.h>
|
||||
|
||||
typedef struct GstMediaInfoPriv GstMediaInfoPriv;
|
||||
|
||||
typedef struct
|
||||
{
|
||||
GObject parent;
|
||||
|
||||
GstMediaInfoPriv *priv;
|
||||
} GstMediaInfo;
|
||||
|
||||
typedef struct
|
||||
{
|
||||
GObjectClass parent_class;
|
||||
|
||||
/* signals */
|
||||
void (*media_info_signal) (GstMediaInfo *gst_media_info);
|
||||
|
||||
} GstMediaInfoClass;
|
||||
|
||||
/* structure for "physical" stream,
|
||||
* which can contain multiple sequential ones */
|
||||
typedef struct
|
||||
{
|
||||
gboolean seekable;
|
||||
gchar *mime;
|
||||
gchar *path;
|
||||
GstCaps *caps; /* properties of the complete bitstream */
|
||||
|
||||
guint64 length_time;
|
||||
glong length_tracks;
|
||||
glong bitrate;
|
||||
|
||||
GList *tracks;
|
||||
} GstMediaInfoStream;
|
||||
|
||||
/* structure for "logical" stream or track,
|
||||
* or one of a set of sequentially muxed streams */
|
||||
typedef struct
|
||||
{
|
||||
GstCaps *metadata; /* changeable metadata or tags */
|
||||
GstCaps *streaminfo; /* codec property stuff */
|
||||
GstCaps *format; /* properties of the logical stream */
|
||||
|
||||
guint64 length_time;
|
||||
|
||||
GList *con_streams; /* list of concurrent streams in this
|
||||
sequential stream */
|
||||
} GstMediaInfoTrack;
|
||||
|
||||
typedef struct
|
||||
{
|
||||
GstCaps *caps; /* properties of the muxed concurrent stream */
|
||||
} GstMediaInfoConcurrent;
|
||||
|
||||
#define GST_MEDIA_INFO_ERROR gst_media_info_error_quark ()
|
||||
|
||||
#define GST_MEDIA_INFO_TYPE (gst_media_info_get_type ())
|
||||
#define GST_MEDIA_INFO(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_MEDIA_INFO_TYPE, GstMediaInfo))
|
||||
#define GST_MEDIA_INFO_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_MEDIA_INFO_TYPE, GstMediaInfoClass))
|
||||
#define IS_GST_MEDIA_INFO(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_MEDIA_INFO_TYPE))
|
||||
#define IS_GST_MEDIA_INFO_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_MEDIA_INFO_TYPE))
|
||||
#define GST_MEDIA_INFO_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_MEDIA_INFO_TYPE, GstMediaInfoClass))
|
||||
|
||||
#define GST_MEDIA_INFO_STREAM 1 << 1
|
||||
#define GST_MEDIA_INFO_MIME 1 << 2
|
||||
#define GST_MEDIA_INFO_METADATA 1 << 3
|
||||
#define GST_MEDIA_INFO_STREAMINFO 1 << 4
|
||||
#define GST_MEDIA_INFO_FORMAT 1 << 5
|
||||
#define GST_MEDIA_INFO_ALL ((1 << 6) - 1)
|
||||
|
||||
GType gst_media_info_get_type (void);
|
||||
|
||||
GstMediaInfo * gst_media_info_new (const char *source_element);
|
||||
GstMediaInfoStream *
|
||||
gst_media_info_read (GstMediaInfo *media_info,
|
||||
const char *location,
|
||||
guint16 GST_MEDIA_INFO_FLAGS);
|
||||
gboolean gst_media_info_read_many (GstMediaInfo *media_info,
|
||||
GList *locations,
|
||||
guint16 GST_MEDIA_INFO_FLAGS,
|
||||
GError **error);
|
||||
GstCaps * gst_media_info_get_next (GstMediaInfo *media_info,
|
||||
GError **error);
|
||||
/*
|
||||
* FIXME: reset ?
|
||||
gboolean gst_media_info_write (GstMediaInfo *media_info,
|
||||
const char *location,
|
||||
GstCaps *media_info);
|
||||
*/
|
||||
|
||||
#endif /* __GST_MEDIA_INFO_H__ */
|
||||
Loading…
Reference in a new issue