gstreamer/ges/ges-uri-asset.c
2014-04-17 13:18:19 +02:00

655 lines
19 KiB
C

/* GStreamer Editing Services
*
* Copyright (C) 2012 Thibault Saunier <thibault.saunier@collabora.com>
* Copyright (C) 2012 Volodymyr Rudyi <vladimir.rudoy@gmail.com>
*
* 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.
*/
/**
* SECTION: gesuriclipasset
* @short_description: A GESAsset subclass specialized in GESUriClip extraction
*
* The #GESUriClipAsset is a special #GESAsset that lets you handle
* the media file to use inside the GStreamer Editing Services. It has APIs that
* let you get information about the medias. Also, the tags found in the media file are
* set as Metadatas of the Asser.
*/
#include <gst/pbutils/pbutils.h>
#include "ges.h"
#include "ges-internal.h"
#include "ges-track-element-asset.h"
static GHashTable *parent_newparent_table = NULL;
static void
initable_iface_init (GInitableIface * initable_iface)
{
/* We can not iniate synchronously */
initable_iface->init = NULL;
}
G_DEFINE_TYPE_WITH_CODE (GESUriClipAsset, ges_uri_clip_asset,
GES_TYPE_CLIP_ASSET,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, initable_iface_init));
/* TODO: We should monitor files here, and add some way of reporting changes
* to user
*/
enum
{
PROP_0,
PROP_DURATION,
PROP_LAST
};
static GParamSpec *properties[PROP_LAST];
static void discoverer_discovered_cb (GstDiscoverer * discoverer,
GstDiscovererInfo * info, GError * err, gpointer user_data);
struct _GESUriClipAssetPrivate
{
GstDiscovererInfo *info;
GstClockTime duration;
gboolean is_image;
GList *asset_trackfilesources;
};
struct _GESUriSourceAssetPrivate
{
GstDiscovererStreamInfo *sinfo;
GESUriClipAsset *parent_asset;
const gchar *uri;
};
static void
ges_uri_clip_asset_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GESUriClipAssetPrivate *priv = GES_URI_CLIP_ASSET (object)->priv;
switch (property_id) {
case PROP_DURATION:
g_value_set_uint64 (value, priv->duration);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static void
ges_uri_clip_asset_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GESUriClipAssetPrivate *priv = GES_URI_CLIP_ASSET (object)->priv;
switch (property_id) {
case PROP_DURATION:
priv->duration = g_value_get_uint64 (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
}
}
static GESAssetLoadingReturn
_start_loading (GESAsset * asset, GError ** error)
{
gboolean ret;
const gchar *uri;
GESUriClipAssetClass *class = GES_URI_CLIP_ASSET_GET_CLASS (asset);
GST_DEBUG ("Started loading %p", asset);
uri = ges_asset_get_id (asset);
ret = gst_discoverer_discover_uri_async (class->discoverer, uri);
if (ret)
return GES_ASSET_LOADING_ASYNC;
return GES_ASSET_LOADING_ERROR;
}
static gboolean
_request_id_update (GESAsset * self, gchar ** proposed_new_id, GError * error)
{
if (error->domain == GST_RESOURCE_ERROR &&
(error->code == GST_RESOURCE_ERROR_NOT_FOUND ||
error->code == GST_RESOURCE_ERROR_OPEN_READ)) {
const gchar *uri = ges_asset_get_id (self);
GFile *parent, *file = g_file_new_for_uri (uri);
/* Check if we have the new parent in cache */
parent = g_file_get_parent (file);
if (parent) {
GFile *new_parent = g_hash_table_lookup (parent_newparent_table, parent);
if (new_parent) {
gchar *basename = g_file_get_basename (file);
GFile *new_file = g_file_get_child (new_parent, basename);
/* FIXME Handle the GCancellable */
if (g_file_query_exists (file, NULL)) {
*proposed_new_id = g_file_get_uri (new_file);
GST_DEBUG_OBJECT (self, "Proposing path: %s as proxy",
*proposed_new_id);
}
gst_object_unref (new_file);
g_free (basename);
}
gst_object_unref (parent);
}
gst_object_unref (file);
return TRUE;
}
return FALSE;
}
static void
_asset_proxied (GESAsset * self, const gchar * new_uri)
{
const gchar *uri = ges_asset_get_id (self);
GFile *parent, *new_parent, *new_file = g_file_new_for_uri (new_uri),
*file = g_file_new_for_uri (uri);
parent = g_file_get_parent (file);
new_parent = g_file_get_parent (new_file);
g_hash_table_insert (parent_newparent_table, parent, new_parent);
gst_object_unref (file);
gst_object_unref (new_file);
}
static void
ges_uri_clip_asset_class_init (GESUriClipAssetClass * klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
g_type_class_add_private (klass, sizeof (GESUriClipAssetPrivate));
object_class->get_property = ges_uri_clip_asset_get_property;
object_class->set_property = ges_uri_clip_asset_set_property;
GES_ASSET_CLASS (klass)->start_loading = _start_loading;
GES_ASSET_CLASS (klass)->request_id_update = _request_id_update;
GES_ASSET_CLASS (klass)->inform_proxy = _asset_proxied;
/**
* GESUriClipAsset:duration:
*
* The duration (in nanoseconds) of the media file
*/
properties[PROP_DURATION] =
g_param_spec_uint64 ("duration", "Duration", "The duration to use", 0,
G_MAXUINT64, GST_CLOCK_TIME_NONE, G_PARAM_READWRITE);
g_object_class_install_property (object_class, PROP_DURATION,
properties[PROP_DURATION]);
klass->discoverer = gst_discoverer_new (GST_SECOND, NULL);
klass->sync_discoverer = gst_discoverer_new (GST_SECOND, NULL);
g_signal_connect (klass->discoverer, "discovered",
G_CALLBACK (discoverer_discovered_cb), NULL);
/* We just start the discoverer and let it live */
gst_discoverer_start (klass->discoverer);
if (parent_newparent_table == NULL) {
parent_newparent_table = g_hash_table_new_full (g_file_hash,
(GEqualFunc) g_file_equal, gst_object_unref, gst_object_unref);
}
}
static void
ges_uri_clip_asset_init (GESUriClipAsset * self)
{
GESUriClipAssetPrivate *priv;
priv = self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_URI_CLIP_ASSET, GESUriClipAssetPrivate);
priv->info = NULL;
priv->duration = GST_CLOCK_TIME_NONE;
priv->is_image = FALSE;
}
static void
_create_uri_source_asset (GESUriClipAsset * asset,
GstDiscovererStreamInfo * sinfo, GESTrackType type)
{
GESAsset *tck_filesource_asset;
GESUriSourceAssetPrivate *priv_tckasset;
GESUriClipAssetPrivate *priv = asset->priv;
gchar *stream_id =
g_strdup (gst_discoverer_stream_info_get_stream_id (sinfo));
if (stream_id == NULL) {
GST_WARNING ("No stream ID found, using the pointer instead");
stream_id = g_strdup_printf ("%i", GPOINTER_TO_INT (sinfo));
}
if (type == GES_TRACK_TYPE_VIDEO)
tck_filesource_asset = ges_asset_request (GES_TYPE_VIDEO_URI_SOURCE,
stream_id, NULL);
else
tck_filesource_asset = ges_asset_request (GES_TYPE_AUDIO_URI_SOURCE,
stream_id, NULL);
g_free (stream_id);
priv_tckasset = GES_URI_SOURCE_ASSET (tck_filesource_asset)->priv;
priv_tckasset->uri = ges_asset_get_id (GES_ASSET (asset));
priv_tckasset->sinfo = gst_object_ref (sinfo);
priv_tckasset->parent_asset = asset;
ges_track_element_asset_set_track_type (GES_TRACK_ELEMENT_ASSET
(tck_filesource_asset), type);
priv->asset_trackfilesources = g_list_append (priv->asset_trackfilesources,
gst_object_ref (tck_filesource_asset));
}
static void
ges_uri_clip_asset_set_info (GESUriClipAsset * self, GstDiscovererInfo * info)
{
GList *tmp, *stream_list;
GESTrackType supportedformats = GES_TRACK_TYPE_UNKNOWN;
GESUriClipAssetPrivate *priv = GES_URI_CLIP_ASSET (self)->priv;
/* Extract infos from the GstDiscovererInfo */
stream_list = gst_discoverer_info_get_stream_list (info);
for (tmp = stream_list; tmp; tmp = tmp->next) {
GESTrackType type = GES_TRACK_TYPE_UNKNOWN;
GstDiscovererStreamInfo *sinf = (GstDiscovererStreamInfo *) tmp->data;
if (GST_IS_DISCOVERER_AUDIO_INFO (sinf)) {
if (supportedformats == GES_TRACK_TYPE_UNKNOWN)
supportedformats = GES_TRACK_TYPE_AUDIO;
else
supportedformats |= GES_TRACK_TYPE_AUDIO;
type = GES_TRACK_TYPE_AUDIO;
} else if (GST_IS_DISCOVERER_VIDEO_INFO (sinf)) {
if (supportedformats == GES_TRACK_TYPE_UNKNOWN)
supportedformats = GES_TRACK_TYPE_VIDEO;
else
supportedformats |= GES_TRACK_TYPE_VIDEO;
if (gst_discoverer_video_info_is_image ((GstDiscovererVideoInfo *)
sinf))
priv->is_image = TRUE;
type = GES_TRACK_TYPE_VIDEO;
}
GST_DEBUG_OBJECT (self, "Creating GESUriSourceAsset for stream: %s",
gst_discoverer_stream_info_get_stream_id (sinf));
_create_uri_source_asset (self, sinf, type);
}
ges_clip_asset_set_supported_formats (GES_CLIP_ASSET
(self), supportedformats);
if (stream_list)
gst_discoverer_stream_info_list_free (stream_list);
if (priv->is_image == FALSE)
priv->duration = gst_discoverer_info_get_duration (info);
/* else we keep #GST_CLOCK_TIME_NONE */
priv->info = gst_object_ref (info);
}
static void
_set_meta_foreach (const GstTagList * tags, const gchar * tag,
GESMetaContainer * container)
{
GValue value = { 0 };
if (gst_tag_list_copy_value (&value, tags, tag)) {
ges_meta_container_set_meta (container, tag, &value);
g_value_unset (&value);
} else {
GST_INFO ("Could not set metadata: %s", tag);
}
}
static void
discoverer_discovered_cb (GstDiscoverer * discoverer,
GstDiscovererInfo * info, GError * err, gpointer user_data)
{
const GstTagList *tags;
const gchar *uri = gst_discoverer_info_get_uri (info);
GESUriClipAsset *mfs =
GES_URI_CLIP_ASSET (ges_asset_cache_lookup (GES_TYPE_URI_CLIP, uri));
tags = gst_discoverer_info_get_tags (info);
if (tags)
gst_tag_list_foreach (tags, (GstTagForeachFunc) _set_meta_foreach, mfs);
if (err == NULL)
ges_uri_clip_asset_set_info (mfs, info);
ges_asset_cache_set_loaded (GES_TYPE_URI_CLIP, uri, err);
}
/* API implementation */
/**
* ges_uri_clip_asset_get_info:
* @self: Target asset
*
* Gets #GstDiscovererInfo about the file
*
* Returns: (transfer none): #GstDiscovererInfo of specified asset
*/
GstDiscovererInfo *
ges_uri_clip_asset_get_info (const GESUriClipAsset * self)
{
g_return_val_if_fail (GES_IS_URI_CLIP_ASSET (self), NULL);
return self->priv->info;
}
/**
* ges_uri_clip_asset_get_duration:
* @self: a #GESUriClipAsset
*
* Gets duration of the file represented by @self
*
* Returns: The duration of @self
*/
GstClockTime
ges_uri_clip_asset_get_duration (GESUriClipAsset * self)
{
g_return_val_if_fail (GES_IS_URI_CLIP_ASSET (self), GST_CLOCK_TIME_NONE);
return self->priv->duration;
}
/**
* ges_uri_clip_asset_is_image:
* @self: a #indent: Standard input:311: Error:Unexpected end of file
GESUriClipAsset
*
* Gets Whether the file represented by @self is an image or not
*
* Returns: Whether the file represented by @self is an image or not
*/
gboolean
ges_uri_clip_asset_is_image (GESUriClipAsset * self)
{
g_return_val_if_fail (GES_IS_URI_CLIP_ASSET (self), FALSE);
return self->priv->is_image;
}
/**
* ges_uri_clip_asset_new:
* @uri: The URI of the file for which to create a #GESUriClipAsset
* @cancellable: optional %GCancellable object, %NULL to ignore.
* @callback: (scope async): a #GAsyncReadyCallback to call when the initialization is finished
* @user_data: The user data to pass when @callback is called
*
* Creates a #GESUriClipAsset for @uri
*
* Example of request of a GESUriClipAsset:
* |[
* // The request callback
* static void
* filesource_asset_loaded_cb (GESAsset * source, GAsyncResult * res, gpointer user_data)
* {
* GError *error = NULL;
* GESUriClipAsset *filesource_asset;
*
* filesource_asset = GES_URI_CLIP_ASSET (ges_asset_request_finish (res, &error));
* if (filesource_asset) {
* g_print ("The file: %s is usable as a FileSource, it is%s an image and lasts %" GST_TIME_FORMAT,
* ges_asset_get_id (GES_ASSET (filesource_asset))
* ges_uri_clip_asset_is_image (filesource_asset) ? "" : " not",
* GST_TIME_ARGS (ges_uri_clip_asset_get_duration (filesource_asset));
* } else {
* g_print ("The file: %s is *not* usable as a FileSource because: %s",
* ges_asset_get_id (source), error->message);
* }
*
* gst_object_unref (mfs);
* }
*
* // The request:
* ges_uri_clip_asset_new (uri, (GAsyncReadyCallback) filesource_asset_loaded_cb, user_data);
* ]|
*/
void
ges_uri_clip_asset_new (const gchar * uri, GCancellable * cancellable,
GAsyncReadyCallback callback, gpointer user_data)
{
ges_asset_request_async (GES_TYPE_URI_CLIP, uri, cancellable,
callback, user_data);
}
/**
* ges_uri_clip_asset_request_sync:
* @uri: The URI of the file for which to create a #GESUriClipAsset.
* You can also use multi file uris for #GESMultiFileSource.
* @error: (allow-none): An error to be set in case something wrong happens or %NULL
*
* Creates a #GESUriClipAsset for @uri syncronously. You should avoid
* to use it in application, and rather create #GESUriClipAsset asynchronously
*
* Returns: (transfer none): A reference to the requested asset or %NULL if an error happend
*/
GESUriClipAsset *
ges_uri_clip_asset_request_sync (const gchar * uri, GError ** error)
{
GError *lerror = NULL;
GstDiscovererInfo *info;
GstDiscoverer *discoverer;
GESUriClipAsset *asset;
gchar *first_file, *first_file_uri;
asset = GES_URI_CLIP_ASSET (ges_asset_request (GES_TYPE_URI_CLIP, uri,
&lerror));
if (asset)
return asset;
if (lerror && lerror->domain == GES_ERROR &&
lerror->code == GES_ERROR_ASSET_WRONG_ID) {
g_propagate_error (error, lerror);
return NULL;
}
asset = g_object_new (GES_TYPE_URI_CLIP_ASSET, "id", uri,
"extractable-type", GES_TYPE_URI_CLIP, NULL);
discoverer = GES_URI_CLIP_ASSET_GET_CLASS (asset)->sync_discoverer;
if (g_str_has_prefix (uri, GES_MULTI_FILE_URI_PREFIX)) {
GESMultiFileURI *uri_data;
uri_data = ges_multi_file_uri_new (uri);
first_file = g_strdup_printf (uri_data->location, uri_data->start);
first_file_uri = gst_filename_to_uri (first_file, &lerror);
info = gst_discoverer_discover_uri (discoverer, first_file_uri, &lerror);
GST_DEBUG ("Got multifile uri. Discovering first file %s", first_file_uri);
g_free (uri_data);
g_free (first_file_uri);
g_free (first_file);
} else {
info = gst_discoverer_discover_uri (discoverer, uri, &lerror);
}
if (info == NULL || lerror != NULL) {
gst_object_unref (asset);
if (lerror)
g_propagate_error (error, lerror);
return NULL;
}
ges_asset_cache_put (gst_object_ref (asset), NULL);
ges_uri_clip_asset_set_info (asset, info);
ges_asset_cache_set_loaded (GES_TYPE_URI_CLIP, uri, lerror);
return asset;
}
/**
* ges_uri_clip_asset_class_set_timeout:
* @klass: The #GESUriClipAssetClass on which to set the discoverer timeout
* @timeout: The timeout to set
*
* Sets the timeout of #GESUriClipAsset loading
*/
void
ges_uri_clip_asset_class_set_timeout (GESUriClipAssetClass * klass,
GstClockTime timeout)
{
g_return_if_fail (GES_IS_URI_CLIP_ASSET_CLASS (klass));
g_object_set (klass->discoverer, "timeout", timeout, NULL);
g_object_set (klass->sync_discoverer, "timeout", timeout, NULL);
}
/**
* ges_uri_clip_asset_get_stream_assets:
* @self: A #GESUriClipAsset
*
* Get the GESUriSourceAsset @self containes
*
* Returns: (transfer none) (element-type GESUriSourceAsset): a
* #GList of #GESUriSourceAsset
*/
const GList *
ges_uri_clip_asset_get_stream_assets (GESUriClipAsset * self)
{
g_return_val_if_fail (GES_IS_URI_CLIP_ASSET (self), FALSE);
return self->priv->asset_trackfilesources;
}
/*****************************************************************
* GESUriSourceAsset implementation *
*****************************************************************/
/**
* SECTION: gesurisourceasset
* @short_description: A GESAsset subclass specialized in GESUriSource extraction
*
* NOTE: You should never request such a #GESAsset as they will be created automatically
* by #GESUriClipAsset-s.
*/
G_DEFINE_TYPE (GESUriSourceAsset, ges_uri_source_asset,
GES_TYPE_TRACK_ELEMENT_ASSET);
static GESExtractable *
_extract (GESAsset * asset, GError ** error)
{
GESTrackElement *trackelement;
GESUriSourceAssetPrivate *priv = GES_URI_SOURCE_ASSET (asset)->priv;
if (GST_IS_DISCOVERER_STREAM_INFO (priv->sinfo) == FALSE) {
GST_WARNING_OBJECT (asset, "Can not extract as no strean info set");
return NULL;
}
if (priv->uri == NULL) {
GST_WARNING_OBJECT (asset, "Can not extract as no uri set");
return NULL;
}
if (g_str_has_prefix (priv->uri, GES_MULTI_FILE_URI_PREFIX)) {
trackelement =
GES_TRACK_ELEMENT (ges_multi_file_source_new (g_strdup (priv->uri)));
} else if (GST_IS_DISCOVERER_VIDEO_INFO (priv->sinfo)
&& gst_discoverer_video_info_is_image ((GstDiscovererVideoInfo *)
priv->sinfo))
trackelement =
GES_TRACK_ELEMENT (ges_image_source_new (g_strdup (priv->uri)));
else if (GST_IS_DISCOVERER_VIDEO_INFO (priv->sinfo))
trackelement =
GES_TRACK_ELEMENT (ges_video_uri_source_new (g_strdup (priv->uri)));
else
trackelement =
GES_TRACK_ELEMENT (ges_audio_uri_source_new (g_strdup (priv->uri)));
ges_track_element_set_track_type (trackelement,
ges_track_element_asset_get_track_type (GES_TRACK_ELEMENT_ASSET (asset)));
return GES_EXTRACTABLE (trackelement);
}
static void
ges_uri_source_asset_class_init (GESUriSourceAssetClass * klass)
{
g_type_class_add_private (klass, sizeof (GESUriSourceAssetPrivate));
GES_ASSET_CLASS (klass)->extract = _extract;
}
static void
ges_uri_source_asset_init (GESUriSourceAsset * self)
{
GESUriSourceAssetPrivate *priv;
priv = self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
GES_TYPE_URI_SOURCE_ASSET, GESUriSourceAssetPrivate);
priv->sinfo = NULL;
priv->parent_asset = NULL;
priv->uri = NULL;
}
/**
* ges_uri_source_asset_get_stream_info:
* @asset: A #GESUriClipAsset
*
* Get the #GstDiscovererStreamInfo user by @asset
*
* Returns: (transfer none): a #GESUriClipAsset
*/
GstDiscovererStreamInfo *
ges_uri_source_asset_get_stream_info (GESUriSourceAsset * asset)
{
g_return_val_if_fail (GES_IS_URI_SOURCE_ASSET (asset), NULL);
return asset->priv->sinfo;
}
const gchar *
ges_uri_source_asset_get_stream_uri (GESUriSourceAsset * asset)
{
g_return_val_if_fail (GES_IS_URI_SOURCE_ASSET (asset), NULL);
return asset->priv->uri;
}
/**
* ges_uri_source_asset_get_filesource_asset:
* @asset: A #GESUriClipAsset
*
* Get the #GESUriClipAsset @self is contained in
*
* Returns: a #GESUriClipAsset
*/
const GESUriClipAsset *
ges_uri_source_asset_get_filesource_asset (GESUriSourceAsset * asset)
{
g_return_val_if_fail (GES_IS_URI_SOURCE_ASSET (asset), NULL);
return asset->priv->parent_asset;
}