mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-07-30 02:05:07 +00:00
Code Issues 1 Projects Releases Wiki Activity

Sync'ed files up to nautilus-media/media-info versions, and fixed them for errors and deprecated functions

Browse source 
Original commit message from CVS:
Sync'ed files up to nautilus-media/media-info versions, and fixed them for errors and deprecated functions
This commit is contained in:
Iain Holmes 2003-09-23 22:49:35 +00:00
parent 50633ff1dc
commit 3e701ebef0
6 changed files with 1049 additions and 592 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
gst-libs/gst/media-info/Makefile.am
View file

@ -2,7 +2,7 @@ librarydir = $(libdir)
library_LTLIBRARIES = libgstmedia-info-@GST_MAJORMINOR@.la
libgstmedia_info_@GST_MAJORMINOR@_la_SOURCES = media-info.c
libgstmedia_info_@GST_MAJORMINOR@_la_SOURCES = media-info.c media-info-priv.c
libincludedir = $(includedir)/gstreamer-@GST_MAJORMINOR@/gst/media-info
libinclude_HEADERS = media-info.h
@ -11,6 +11,7 @@ libgstmedia_info_@GST_MAJORMINOR@_la_CFLAGS = $(GST_CFLAGS) $(GST_PLUGIN_CFLAGS)
libgstmedia_info_@GST_MAJORMINOR@_la_LIBADD = $(GST_LIBS) $(GST_PLUGIN_LIBS)
noinst_PROGRAMS = media-info-test
noinst_HEADERS = media-info-priv.h
media_info_test_SOURCES = media-info-test.c
media_info_test_CFLAGS = $(GST_CFLAGS)

641
gst-libs/gst/media-info/media-info-priv.c Normal file
View file

@ -0,0 +1,641 @@
/* 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.
*/
/* media-info-priv.c - handling of internal stuff */
#include <gst/gst.h>
#include <string.h>
#include "media-info.h"
#include "media-info-priv.h"
/* helper structs bits */
GstMediaInfoStream *
gmi_stream_new (void)
{
GstMediaInfoStream *stream;
stream = (GstMediaInfoStream *) g_malloc (sizeof (GstMediaInfoStream));
stream->length_tracks = 0;
stream->length_time = 0;
stream->bitrate = 0;
stream->seekable = FALSE;
stream->path = NULL;
stream->mime = NULL;
stream->tracks = NULL;
return stream;
}
void
gmi_stream_free (GstMediaInfoStream *stream)
{
if (stream->mime) g_free (stream->mime);
/* FIXME: free tracks */
g_free (stream);
}
GstMediaInfoTrack *
gmi_track_new (void)
{
GstMediaInfoTrack *track;
track = g_malloc (sizeof (GstMediaInfoTrack));
track->metadata = NULL;
track->streaminfo = NULL;
track->format = NULL;
track->length_time = 0;
track->con_streams = NULL;
return track;
}
/**
* private functions
*/
/* callbacks */
static void
have_type_callback (GstElement *typefind, GstCaps *type, GstMediaInfoPriv *priv)
{
priv->type = type;
}
void
deep_notify_callback (GObject *object, GstObject *origin,
GParamSpec *pspec, GstMediaInfoPriv *priv)
{
GValue value = { 0, };
if (strcmp (pspec->name, "metadata") == 0)
{
GMI_DEBUG("DEBUG: deep_notify: have metadata !\n");
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
priv->metadata = g_value_peek_pointer (&value);
}
else if (strcmp (pspec->name, "caps") == 0)
{
/* check if we're getting it from the source we want it from */
if (GST_IS_PAD (origin) && GST_PAD (origin) == priv->decoder_pad)
{
GMI_DEBUG("DEBUG: deep_notify: have caps on decoder_pad !\n");
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
priv->format = g_value_peek_pointer (&value);
}
else GMI_DEBUG("DEBUG: igoring caps on object %s:%s\n",
gst_object_get_name (gst_object_get_parent (origin)),
gst_object_get_name (origin));
}
else if (strcmp (pspec->name, "offset") == 0)
{
/* we REALLY ignore offsets, we hate them */
}
else if (strcmp (pspec->name, "streaminfo") == 0)
{
GMI_DEBUG("DEBUG: deep_notify: have streaminfo !\n");
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
priv->streaminfo = g_value_peek_pointer (&value);
}
else GMI_DEBUG("DEBUG: ignoring notify of %s\n", pspec->name);
}
/* helpers */
/* reset info to a state where it can be used to query for media info
* clear caps, metadata, and so on */
void
gmi_reset (GstMediaInfo *info)
{
GstMediaInfoPriv *priv = info->priv;
/* clear out some stuff */
if (priv->format)
{
GMI_DEBUG ("unreffing priv->format, error before this ?\n");
gst_caps_unref (priv->format);
priv->format = NULL;
}
if (priv->metadata)
{
GMI_DEBUG ("unreffing priv->metadata, error before this ?\n");
gst_caps_unref (priv->metadata);
priv->metadata = NULL;
}
if (priv->stream)
{
GMI_DEBUG ("freeing priv->stream, error before this ?\n");
g_free (priv->stream);
priv->stream = NULL;
}
if (priv->location)
{
GMI_DEBUG ("freeing priv->location, error before this ?\n");
g_free (priv->location);
priv->location = NULL;
}
priv->flags = 0;
priv->state = GST_MEDIA_INFO_STATE_NULL;
}
/* seek to a track and reset metadata and streaminfo structs */
gboolean
gmi_seek_to_track (GstMediaInfo *info, long track)
{
GstEvent *event;
GstFormat track_format = 0;
GstMediaInfoPriv *priv = info->priv;
gboolean res;
/* FIXME: consider more nicks as "track" */
track_format = gst_format_get_by_nick ("logical_stream");
if (track_format == 0) return FALSE;
GMI_DEBUG("Track format: %d\n", track_format);
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);
if (!res)
{
g_warning ("seek to logical track on pad %s:%s failed of element %s",
GST_DEBUG_PAD_NAME(info->priv->decoder_pad),
gst_element_get_factory((gst_pad_get_parent(info->priv->decoder_pad)))->details->longname);
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 *
gmi_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");
/* FIXME: please figure out proper mp3 mimetypes */
if ((strcmp (mime, "application/x-ogg") == 0) ||
(strcmp (mime, "application/ogg") == 0))
factory = g_strdup ("vorbisfile");
else if ((strcmp (mime, "audio/mpeg") == 0) ||
(strcmp (mime, "audio/x-mp3") == 0) ||
(strcmp (mime, "audio/mp3") == 0))
factory = g_strdup ("mad");
else if (strcmp (mime, "application/x-flac") == 0)
factory = g_strdup ("flacdec");
else if (strcmp (mime, "audio/x-wav") == 0)
factory = g_strdup ("wavparse");
else if (strcmp (mime, "audio/x-mod") == 0 ||
strcmp (mime, "audio/x-s3m") == 0 ||
strcmp (mime, "audio/x-xm") == 0 ||
strcmp (mime, "audio/x-it") == 0)
factory = g_strdup ("modplug");
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;
}
/* set the decoder to be used for decoding
* install callback handlers
*/
void
gmi_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_link (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");
}
/* clear the decoder (if it was set)
*/
void
gmi_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_unlink (info->priv->source, info->priv->decoder);
gst_bin_remove (GST_BIN (info->priv->pipeline), info->priv->decoder);
info->priv->decoder = NULL;
}
}
/****
* typefind functions
* 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 */
/* prepare for typefind, move from NULL to TYPEFIND */
gboolean
gmip_find_type_pre (GstMediaInfoPriv *priv)
{
/* clear vars that need clearing */
if (priv->type)
{
/* we don't need to unref, this is done inside gsttypefind.c
gst_caps_unref (priv->type);
*/
priv->type = NULL;
}
GMI_DEBUG("DEBUG: gmip_find_type_pre: 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", priv->location, NULL);
if (!gst_element_link (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), priv);
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
== GST_STATE_FAILURE)
{
g_warning ("Couldn't set to play");
return FALSE;
}
priv->state = GST_MEDIA_INFO_STATE_TYPEFIND;
return TRUE;
}
/* finish off typefind */
gboolean
gmip_find_type_post (GstMediaInfoPriv *priv)
{
/*clear up typefind */
gst_element_set_state (priv->pipeline, GST_STATE_READY);
gst_element_unlink (priv->source, priv->typefind);
gst_bin_remove (GST_BIN (priv->pipeline), priv->typefind);
if (priv->type == NULL)
{
g_warning ("iteration ended, type not found !\n");
return FALSE;
}
priv->state = GST_MEDIA_INFO_STATE_STREAM;
return TRUE;
}
/* complete version */
gboolean
gmip_find_type (GstMediaInfoPriv *priv)
{
if (!gmip_find_type_pre (priv))
return FALSE;
GMI_DEBUG("DEBUG: gmip_find_type: iterating\n");
while ((priv->type == NULL) &&
gst_bin_iterate (GST_BIN (priv->pipeline)))
GMI_DEBUG("+");
GMI_DEBUG("\n");
return gmip_find_type_post (priv);
}
/* FIXME: why not have these functions work on priv types ? */
gboolean
gmip_find_stream_pre (GstMediaInfoPriv *priv)
{
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
== GST_STATE_FAILURE)
{
g_warning ("Couldn't set to play");
return FALSE;
}
priv->state = GST_MEDIA_INFO_STATE_STREAM;
return TRUE;
}
gboolean
gmip_find_stream_post (GstMediaInfoPriv *priv)
{
GstMediaInfoStream *stream = priv->stream;
const GstFormat *formats;
GstFormat track_format = 0;
GstFormat format;
gint64 value;
gboolean res;
glong bytes = 0;
GMI_DEBUG("gmip_find_stream_post: start\n");
/* 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));
definition = gst_format_get_details (*formats);
GMI_DEBUG("trying to figure out length for format %s\n", definition->nick);
res = gst_pad_query (priv->decoder_pad, GST_QUERY_TOTAL,
&format, &value);
if (res)
{
switch (format)
{
case GST_FORMAT_TIME:
stream->length_time = value;
GMI_DEBUG(" total %s: %lld\n", definition->nick, value);
break;
case GST_FORMAT_DEFAULT:
case GST_FORMAT_BYTES:
break;
default:
/* separation is necessary because track_format doesn't resolve to
* int */
if (format == track_format)
{
stream->length_tracks = value;
GMI_DEBUG(" total %s: %lld\n", definition->nick, value);
}
else
GMI_DEBUG("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_QUERY_TOTAL,
&format, &value);
if (!res) g_warning ("Failed to query on sink pad !");
bytes = value;
GMI_DEBUG("bitrate calc: bytes gotten: %ld\n", bytes);
if (bytes)
{
double seconds = (double) stream->length_time / GST_SECOND;
double bits = bytes * 8;
stream->bitrate = (long) (bits / seconds);
}
priv->state = GST_MEDIA_INFO_STATE_METADATA; /* metadata of first track */
return TRUE;
}
/* get properties of complete physical stream
* and return them in pre-alloced stream struct in priv->stream */
gboolean
gmip_find_stream (GstMediaInfoPriv *priv)
{
GMI_DEBUG("DEBUG:gmip_find_stream start\n");
gmip_find_stream_pre (priv);
/* 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: gmip_find_stream: couldn't get caps !");
return FALSE;
}
return gmip_find_stream_post (priv);
}
/* find metadata encoded in media and store in priv->metadata */
gboolean
gmip_find_track_metadata_pre (GstMediaInfoPriv *priv)
{
/* FIXME: this is a hack to set max allowed iterations for metadata
* querying - we should make gst smarter by itself instead */
priv->metadata_iters = 0;
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
== GST_STATE_FAILURE)
{
g_warning ("Couldn't set to play");
return FALSE;
}
return TRUE;
}
gboolean
gmip_find_track_metadata_post (GstMediaInfoPriv *priv)
{
if (gst_element_set_state (priv->pipeline, GST_STATE_PAUSED)
== GST_STATE_FAILURE)
return FALSE;
priv->current_track->metadata = priv->metadata;
priv->metadata = NULL;
return TRUE;
}
gboolean
gmip_find_track_metadata (GstMediaInfoPriv *priv)
{
gmip_find_track_metadata_pre (priv);
GMI_DEBUG("DEBUG: gmip_find_metadata: iterating\n");
while ((priv->metadata == NULL) &&
gst_bin_iterate (GST_BIN (priv->pipeline)))
GMI_DEBUG("+");
GMI_DEBUG("\n");
gmip_find_track_metadata_post (priv);
return TRUE;
}
/* find streaminfo found by decoder and store in priv->streaminfo */
/* FIXME: this is an exact copy, so reuse this functioin instead */
gboolean
gmip_find_track_streaminfo_pre (GstMediaInfoPriv *priv)
{
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
== GST_STATE_FAILURE)
{
g_warning ("Couldn't set to play");
return FALSE;
}
return TRUE;
}
gboolean
gmip_find_track_streaminfo_post (GstMediaInfoPriv *priv)
{
GstFormat format, track_format;
gst_element_set_state (priv->pipeline, GST_STATE_PAUSED);
/* 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_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;
/* FIXME: check units; this is in seconds */
length = gst_props_entry_new ("length",
GST_PROPS_INT ((int) (value_end / 1E6)));
gst_props_add_entry (gst_caps_get_props (priv->streaminfo), length);
}
}
}
priv->current_track->streaminfo = priv->streaminfo;
priv->streaminfo = NULL;
return TRUE;
}
gboolean
gmip_find_track_streaminfo (GstMediaInfoPriv *priv)
{
gmip_find_track_streaminfo_pre (priv);
GMI_DEBUG("DEBUG: gmip_find_streaminfo: iterating\n");
while ((priv->streaminfo == NULL) &&
gst_bin_iterate (GST_BIN (priv->pipeline)))
GMI_DEBUG("+");
GMI_DEBUG("\n");
gmip_find_track_streaminfo_post (priv);
return TRUE;
}
/* find format found by decoder and store in priv->format */
gboolean
gmip_find_track_format_pre (GstMediaInfoPriv *priv)
{
if (gst_element_set_state (priv->pipeline, GST_STATE_PLAYING)
== GST_STATE_FAILURE)
{
g_warning ("Couldn't set to play");
return FALSE;
}
return TRUE;
}
gboolean
gmip_find_track_format_post (GstMediaInfoPriv *priv)
{
if (gst_element_set_state (priv->pipeline, GST_STATE_PAUSED)
== GST_STATE_FAILURE)
return FALSE;
priv->current_track->format = priv->format;
priv->format = NULL;
return TRUE;
}
gboolean
gmip_find_track_format (GstMediaInfoPriv *priv)
{
gmip_find_track_format_pre (priv);
GMI_DEBUG("DEBUG: gmip_find_format: iterating\n");
while ((priv->format == NULL) &&
gst_bin_iterate (GST_BIN (priv->pipeline)))
GMI_DEBUG("+");
GMI_DEBUG("\n");
gmip_find_track_format_post (priv);
return TRUE;
}

122
gst-libs/gst/media-info/media-info-priv.h Normal file
View file

@ -0,0 +1,122 @@
/* 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.
*/
/* media-info-priv.h: private stuff */
#ifndef __GST_MEDIA_INFO_PRIV_H__
#define __GST_MEDIA_INFO_PRIV_H__
#include <gst/gst.h>
/* debug */
#define DEBUG
#ifdef DEBUG
static gboolean _gmi_debug = TRUE;
#else
static gboolean _gmi_debug = FALSE;
#endif
#define GMI_DEBUG(format, args...) \
{ if (_gmi_debug) { g_print ( format , ## args ); }}
/* state machine enum; FIXME: can we move this to priv.c ? */
typedef enum
{
GST_MEDIA_INFO_STATE_NULL,
GST_MEDIA_INFO_STATE_TYPEFIND,
GST_MEDIA_INFO_STATE_STREAM,
GST_MEDIA_INFO_STATE_METADATA,
GST_MEDIA_INFO_STATE_STREAMINFO,
GST_MEDIA_INFO_STATE_FORMAT,
GST_MEDIA_INFO_STATE_DONE
} GstMediaInfoState;
/* private structure */
struct GstMediaInfoPriv
{
GstElement *pipeline;
GstElement *typefind;
GstCaps *type;
GstPad *decoder_pad; /* pad for querying decoded caps */
GstPad *source_pad; /* pad for querying encoded caps */
GstCaps *format;
GstCaps *metadata;
gint metadata_iters;
GstCaps *streaminfo;
GstElement *decoder; /* will be != NULL during collection */
gchar *source_element; /* type of element used as source */
GstElement *source;
GHashTable *decoders; /* a table of decoder GstElements */
GstMediaInfoState state; /* current state of state machine */
gchar *location; /* location set on the info object */
guint16 flags; /* flags supplied for detection */
GstMediaInfoTrack *current_track; /* track pointer under inspection */
glong current_track_num; /* current track under inspection */
GstMediaInfoStream *stream; /* total stream properties */
char *cache; /* location of cache */
};
/* declarations */
GstMediaInfoStream *
gmi_stream_new (void);
void gmi_stream_free (GstMediaInfoStream *stream);
GstMediaInfoTrack *
gmi_track_new (void);
void gmi_reset (GstMediaInfo *info);
gboolean gmi_seek_to_track (GstMediaInfo *info,
long track);
GstElement * gmi_get_decoder (GstMediaInfo *info,
const char *mime);
void gmi_set_decoder (GstMediaInfo *info,
GstElement *decoder);
void gmi_clear_decoder (GstMediaInfo *info);
void deep_notify_callback (GObject *object,
GstObject *origin,
GParamSpec *pspec,
GstMediaInfoPriv *priv);
gboolean gmip_find_type_pre (GstMediaInfoPriv *priv);
gboolean gmip_find_type_post (GstMediaInfoPriv *priv);
gboolean gmip_find_type (GstMediaInfoPriv *priv);
gboolean gmip_find_stream_pre (GstMediaInfoPriv *priv);
gboolean gmip_find_stream_post (GstMediaInfoPriv *priv);
gboolean gmip_find_stream (GstMediaInfoPriv *priv);
gboolean gmip_find_track_metadata_pre (GstMediaInfoPriv *priv);
gboolean gmip_find_track_metadata_post (GstMediaInfoPriv *priv);
gboolean gmip_find_track_metadata (GstMediaInfoPriv *priv);
gboolean gmip_find_track_streaminfo_pre (GstMediaInfoPriv *priv);
gboolean gmip_find_track_streaminfo_post (GstMediaInfoPriv *priv);
gboolean gmip_find_track_streaminfo (GstMediaInfoPriv *priv);
gboolean gmip_find_track_format_pre (GstMediaInfoPriv *priv);
gboolean gmip_find_track_format_post (GstMediaInfoPriv *priv);
gboolean gmip_find_track_format (GstMediaInfoPriv *priv);
#endif /* __GST_MEDIA_INFO_PRIV_H__ */

24
gst-libs/gst/media-info/media-info-test.c
View file

@ -62,11 +62,16 @@ info_print (GstMediaInfoStream *stream)
GstMediaInfoTrack *track;
g_print ("- mime type: %s\n", stream->mime);
g_print ("- length: %.3f seconds\n",
g_print ("- length: %.3f seconds\n",
(gdouble) stream->length_time / GST_SECOND);
g_print ("- bitrate: %.3f kbps\n", stream->bitrate / 1000.0);
g_print ("- number of tracks: %ld\n", stream->length_tracks);
p = stream->tracks;
if (p == NULL)
{
g_print ("- no track information, probably an error\n");
return;
}
for (i = 0; i < stream->length_tracks; ++i)
{
g_print ("- track %d\n", i);
@ -85,23 +90,32 @@ int
main (int argc, char *argv[])
{
GstMediaInfo *info;
GstMediaInfoStream *stream;
GstMediaInfoStream *stream = NULL;
gint i;
g_assert (argc > 1);
gst_init (&argc, &argv);
info = g_object_new (GST_MEDIA_INFO_TYPE, NULL);
g_print ("stream: %p, &stream: %p\n", stream, &stream);
for (i = 1; i < argc; ++i)
{
/*
stream = gst_media_info_read (info, argv[i], GST_MEDIA_INFO_ALL);
*/
gst_media_info_read_with_idler (info, argv[i], GST_MEDIA_INFO_ALL);
while (gst_media_info_read_idler (info, &stream) && stream == NULL)
/* keep idling */ g_print ("+");
g_print ("\nFILE: %s\n", argv[i]);
g_print ("stream: %p, &stream: %p\n", stream, &stream);
if (stream)
info_print (stream);
else
g_print ("no media info found.\n");
stream = NULL;
}
return 0;
return 0;
}

813
gst-libs/gst/media-info/media-info.c
View file

@ -20,102 +20,19 @@
#include <gst/gst.h>
#include <string.h>
#include "media-info.h"
#include "media-info-priv.h"
static gboolean _gst_media_info_debug = TRUE;
#ifdef G_HAVE_ISO_VARARGS
#define GMI_DEBUG(...) \
G_STMT_START { \
if (_gst_media_info_debug) { g_print ( __VA_ARGS__ ); } \
} G_STMT_END
#elif defined(G_HAVE_GNUC_VARARGS)
#define GMI_DEBUG(format, args...) \
G_STMT_START { \
if (_gst_media_info_debug) { g_print ( format , ## args ); } \
} G_STMT_END
#else
#error Variable argument macros not supported by compiler
#endif
struct GstMediaInfoPriv
{
GstElement *pipeline;
GstElement *typefind;
GstCaps *type;
GstPad *decoder_pad; /* pad for querying decoded caps */
GstPad *source_pad; /* pad for querying encoded caps */
GstCaps *format;
GstCaps *metadata;
GstCaps *streaminfo;
GstElement *decoder; /* will be != NULL during collection */
gchar *source_element; /* type of element used as source */
GstElement *source;
GHashTable *decoders; /* a table of decoder GstElements */
GstMediaInfoStream *stream; /* total stream properties */
char *cache; /* location of cache */
};
static void gst_media_info_class_init (GstMediaInfoClass *klass);
static void gst_media_info_instance_init (GstMediaInfo *info);
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);
GValue *value,
GParamSpec *pspec);
static void gst_media_info_reset (GstMediaInfo *info);
/* FIXME: this is a lousy hack that needs to go */
#define MAX_METADATA_ITERS 5
static void deep_notify_callback (GObject *object, GstObject *origin,
GParamSpec *pspec, GstMediaInfo *info);
/* helper structs bits */
static GstMediaInfoStream *
gst_media_info_stream_new (void)
{
GstMediaInfoStream *stream;
stream = g_malloc (sizeof (GstMediaInfoStream));
stream->length_tracks = 0;
stream->length_time = 0;
stream->bitrate = 0;
stream->seekable = FALSE;
stream->path = NULL;
stream->mime = NULL;
stream->tracks = NULL;
return stream;
}
static void
gst_media_info_stream_free (GstMediaInfoStream *stream)
{
if (stream->mime) g_free (stream->mime);
/* FIXME: free tracks */
g_free (stream);
}
static GstMediaInfoTrack *
gst_media_info_track_new (void)
{
GstMediaInfoTrack *track;
track = g_malloc (sizeof (GstMediaInfoTrack));
track->metadata = NULL;
track->streaminfo = NULL;
track->format = NULL;
track->length_time = 0;
track->con_streams = NULL;
return track;
}
/* GObject-y bits */
/* signal stuff */
@ -146,7 +63,7 @@ gst_media_info_error_quark (void)
}
*/
/*
* GObject type stuff
* GObject type stuff
*/
enum
@ -173,9 +90,9 @@ gst_media_info_get_type (void)
(GInstanceInitFunc) gst_media_info_instance_init,
NULL
};
gst_media_info_type = g_type_register_static (G_TYPE_OBJECT,
gst_media_info_type = g_type_register_static (G_TYPE_OBJECT,
"GstMediaInfo",
&gst_media_info_info, 0);
&gst_media_info_info, 0);
}
return gst_media_info_type;
}
@ -184,7 +101,7 @@ 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);
@ -241,6 +158,7 @@ gst_media_info_instance_init (GstMediaInfo *info)
info->priv->source = NULL;
info->priv->source_element = NULL;
}
info->priv->location = NULL;
info->priv->decoder = NULL;
info->priv->type = NULL;
info->priv->format = NULL;
@ -254,7 +172,7 @@ gst_media_info_instance_init (GstMediaInfo *info)
/* attach notify handler */
g_signal_connect (G_OBJECT (info->priv->pipeline), "deep_notify",
G_CALLBACK (deep_notify_callback), info);
G_CALLBACK (deep_notify_callback), info->priv);
}
/* get/set */
@ -286,446 +204,7 @@ gst_media_info_new (const gchar *source_element)
}
/**
* private functions
*/
/* callbacks */
static void
have_type_callback (GstElement *typefind, GstCaps *type, GstMediaInfo *info)
{
info->priv->type = type;
}
static void
deep_notify_callback (GObject *object, GstObject *origin,
GParamSpec *pspec, GstMediaInfo *info)
{
GValue value = { 0, };
if (strcmp (pspec->name, "metadata") == 0)
{
GMI_DEBUG("DEBUG: deep_notify: have metadata !\n");
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
info->priv->metadata = g_value_peek_pointer (&value);
}
else if (strcmp (pspec->name, "caps") == 0)
{
/* check if we're getting it from the source we want it from */
if (GST_IS_PAD (origin) && GST_PAD (origin) == info->priv->decoder_pad)
{
GMI_DEBUG("DEBUG: deep_notify: have caps on decoder_pad !\n");
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
info->priv->format = g_value_peek_pointer (&value);
}
else GMI_DEBUG("DEBUG: igoring caps on object %s:%s\n",
gst_object_get_name (gst_object_get_parent (origin)),
gst_object_get_name (origin));
}
else if (strcmp (pspec->name, "offset") == 0)
{
/* we REALLY ignore offsets, we hate them */
}
else if (strcmp (pspec->name, "streaminfo") == 0)
{
GMI_DEBUG("DEBUG: deep_notify: have streaminfo !\n");
g_value_init (&value, pspec->value_type);
g_object_get_property (G_OBJECT (origin), pspec->name, &value);
info->priv->streaminfo = g_value_peek_pointer (&value);
}
else GMI_DEBUG("DEBUG: ignoring notify of %s\n", pspec->name);
}
/* helpers */
/* reset info to a state where it can be used to query for media info
* clear caps, metadata, and so on */
static void
gst_media_info_reset (GstMediaInfo *info)
{
GstMediaInfoPriv *priv = info->priv;
/* clear out some stuff */
if (priv->format)
{
gst_caps_unref (priv->format);
priv->format = NULL;
}
if (priv->metadata)
{
gst_caps_unref (priv->metadata);
priv->metadata = NULL;
}
if (priv->stream)
{
g_free (priv->stream);
priv->stream = NULL;
}
}
/* seek to a track and reset metadata and streaminfo structs */
static gboolean
gst_media_info_seek_to_track (GstMediaInfo *info, long track)
{
GstEvent *event;
GstFormat track_format = 0;
GstMediaInfoPriv *priv = info->priv;
gboolean res;
/* FIXME: consider more nicks as "track" */
track_format = gst_format_get_by_nick ("logical_stream");
if (track_format == 0) return FALSE;
GMI_DEBUG("Track format: %d\n", track_format);
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/x-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_link (priv->source, priv->typefind))
g_warning ("Couldn't link 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_unlink (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_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: %" G_GINT64_FORMAT "\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: %" G_GINT64_FORMAT "\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_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_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 %" G_GINT64_FORMAT ", end %"
G_GINT64_FORMAT "\n", value_start, value_end);
value_end -= value_start;
g_print ("DEBUG: length: %d\n", (int) value_end);
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_unlink (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_link (priv->source, decoder))
g_warning ("Couldn't link source and decoder\n");
/* FIXME: we should be link 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
* public methods
*/
gboolean
gst_media_info_set_source (GstMediaInfo *info, const char *source)
@ -753,71 +232,266 @@ gst_media_info_set_source (GstMediaInfo *info, const char *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)
{
GstMediaInfoPriv *priv = info->priv;
gmi_reset (info); /* 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)
{
GstMediaInfoPriv *priv ;
/* if it's NULL then we're sure something went wrong higher up) */
if (info == NULL) return FALSE;
priv = info->priv;
g_assert (streamp != NULL);
switch (priv->state)
{
case GST_MEDIA_INFO_STATE_NULL:
/* need to find type */
GMI_DEBUG("idler: NULL, need to find type\n");
return gmip_find_type_pre (priv);
case GST_MEDIA_INFO_STATE_TYPEFIND:
{
gchar *mime;
GstElement *decoder;
GMI_DEBUG("STATE_TYPEFIND\n");
if ((priv->type == NULL) && gst_bin_iterate (GST_BIN (priv->pipeline)))
{
GMI_DEBUG("?");
return TRUE;
}
if (priv->type == NULL)
{
g_warning ("Couldn't find type\n");
return FALSE;
}
/* do the state transition */
GMI_DEBUG("doing find_type_post\n");
gmip_find_type_post (priv);
GMI_DEBUG("finding out mime type\n");
mime = g_strdup (gst_caps_get_mime (priv->type));
GMI_DEBUG("found out mime type: %s\n", mime);
decoder = gmi_get_decoder (info, mime);
if (decoder == NULL)
{
/* FIXME: pop up error */
GMI_DEBUG("DEBUG: no decoder found for mime %s\n", mime);
return FALSE;
}
priv->stream = gmi_stream_new ();
GMI_DEBUG("DEBUG: new stream: %p\n", priv->stream);
priv->stream->mime = mime;
priv->stream->path = priv->location;
gmi_set_decoder (info, decoder);
gmip_find_stream_pre (priv);
}
case GST_MEDIA_INFO_STATE_STREAM:
{
GMI_DEBUG("STATE_STREAM\n");
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 */
GMI_DEBUG("Couldn't find metadata\n");
}
GMI_DEBUG("found metadata of track %ld\n", priv->current_track_num);
if (!gmip_find_track_metadata_post (priv)) return FALSE;
GMI_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 */
GMI_DEBUG("Couldn't find streaminfo\n");
}
else
GMI_DEBUG("found streaminfo of track %ld\n", 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;
}
GMI_DEBUG("found format of track %ld\n", 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;
*streamp = priv->stream;
priv->stream = NULL;
GMI_DEBUG("TOTALLY DONE, setting pointer *streamp to %p\n", *streamp);
gmi_clear_decoder (info);
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)
{
GstMediaInfoPriv *priv = info->priv;
GstElement *decoder = NULL;
const gchar *mime;
GstMediaInfoStream *stream = NULL;
GstElement *decoder = NULL;
gchar *mime;
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("DEBUG: gst_media_info_read: start\n");
gmi_reset (info); /* reset all structs */
priv->location = g_strdup (location);
priv->flags = flags;
if (!gmip_find_type (priv)) return NULL;
mime = g_strdup (gst_caps_get_mime (priv->type));
GMI_DEBUG("mime type: %s\n", mime);
decoder = gst_media_info_get_decoder (info, mime);
/* c) figure out decoder */
decoder = gmi_get_decoder (info, mime);
g_print ("DEBUG: using decoder %s\n", gst_element_get_name (decoder));
/* 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;
}
/* b) create media info stream object */
priv->stream = gmi_stream_new ();
priv->stream->mime = mime;
priv->stream->path = priv->location;
/* install this decoder in the pipeline */
gst_media_info_set_decoder (info, decoder);
gmi_set_decoder (info, decoder);
/* collect total stream properties */
gst_media_info_get_stream (info, stream);
/* d) get all stream properties */
gmip_find_stream (priv);
/* if we have multiple tracks, loop over them; if not, just get
/* e) 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)
GMI_DEBUG("DEBUG: num tracks %ld\n", priv->stream->length_tracks);
for (i = 0; i < priv->stream->length_tracks; ++i)
{
GstMediaInfoTrack *track = gst_media_info_track_new ();
priv->current_track = gmi_track_new ();
if (i > 0)
{
GMI_DEBUG("seeking to track %d\n", i);
gst_media_info_seek_to_track (info, i);
gmi_seek_to_track (info, i);
}
if (flags & GST_MEDIA_INFO_METADATA)
track->metadata = gst_media_info_find_metadata (info);
gmip_find_track_metadata (priv);
if (flags & GST_MEDIA_INFO_STREAMINFO)
track->streaminfo = gst_media_info_find_streaminfo (info);
gmip_find_track_streaminfo (priv);
if (flags & GST_MEDIA_INFO_FORMAT)
track->format = gst_media_info_find_format (info);
stream->tracks = g_list_append (stream->tracks, track);
gmip_find_track_format (priv);
priv->stream->tracks = g_list_append (priv->stream->tracks,
priv->current_track);
priv->current_track = NULL;
}
gst_media_info_clear_decoder (info);
/* f) clear decoder */
gmi_clear_decoder (info);
/* please return it */
stream = priv->stream;
priv->stream = NULL;
return stream;
}
@ -828,4 +502,3 @@ gboolean gst_media_info_write (GstMediaInfo *media_info,
const char *location,
GstCaps *media_info);
*/

38
gst-libs/gst/media-info/media-info.h
View file

@ -37,7 +37,7 @@ typedef struct
GObjectClass parent_class;
/* signals */
void (*media_info_signal) (GstMediaInfo *gst_media_info);
void (*media_info_signal) (GstMediaInfo *gst_media_info);
} GstMediaInfoClass;
@ -57,7 +57,7 @@ typedef struct
GList *tracks;
} GstMediaInfoStream;
/* structure for "logical" stream or track,
/* structure for "logical" stream or track,
* or one of a set of sequentially muxed streams */
typedef struct
{
@ -76,7 +76,7 @@ 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_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))
@ -92,24 +92,30 @@ typedef struct
#define GST_MEDIA_INFO_FORMAT 1 << 5
#define GST_MEDIA_INFO_ALL ((1 << 6) - 1)
GType gst_media_info_get_type (void);
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);
GstMediaInfo * gst_media_info_new (const char *source_element);
void gst_media_info_read_with_idler (GstMediaInfo *media_info,
const char *location,
guint16 GST_MEDIA_INFO_FLAGS);
gboolean gst_media_info_read_idler (GstMediaInfo *media_info,
GstMediaInfoStream **streamp);
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__ */