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iosassetsrc: Add new element from the GStreamer SDK project

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This commit is contained in:
Andoni Morales Alastruey 2013-09-26 13:21:59 +02:00 committed by Sebastian Dröge
parent 3d5e214f83
commit e5d5faa67e
4 changed files with 594 additions and 2 deletions
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6
sys/applemedia/Makefile.am
View file

@ -67,11 +67,13 @@ noinst_HEADERS = \
vtapi.h \
atdec.h \
dynapi.h \
dynapi-internal.h
dynapi-internal.h \
iosassetsrc.h
if HAVE_IOS
#libgstapplemedia_la_SOURCES += \
libgstapplemedia_la_SOURCES += \
iosassetsrc.m
# avfvideosrc.m
#libgstapplemedia_la_LDFLAGS += \

83
sys/applemedia/iosassetsrc.h Normal file
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@ -0,0 +1,83 @@
/* GStreamer
* Copyright (C) 2013 Fluendo S.L. <support@fluendo.com>
* Authors: 2013 Andoni Morales Alastruey <amorales@fluendo.com>
*
* gstios_assetsrc.h:
*
* 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_IOS_ASSET_SRC_H__
#define __GST_IOS_ASSET_SRC_H__
#include <sys/types.h>
#include <gst/gst.h>
#include <gst/base/gstbasesrc.h>
#include <AssetsLibrary/ALAssetsLibrary.h>
#include <AssetsLibrary/ALAssetRepresentation.h>
G_BEGIN_DECLS
#define GST_TYPE_IOS_ASSET_SRC \
(gst_ios_asset_src_get_type())
#define GST_IOS_ASSET_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_IOS_ASSET_SRC,GstIOSAssetSrc))
#define GST_IOS_ASSET_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_IOS_ASSET_SRC,GstIOSAssetSrcClass))
#define GST_IS_IOS_ASSET_SRC(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_IOS_ASSET_SRC))
#define GST_IS_IOS_ASSET_SRC_CLASS(klass) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_IOS_ASSET_SRC))
#define GST_IOS_ASSET_SRC_CAST(obj) ((GstIOSAssetSrc*) obj)
typedef struct _GstIOSAssetSrc GstIOSAssetSrc;
typedef struct _GstIOSAssetSrcClass GstIOSAssetSrcClass;
@interface GstAssetsLibrary : ALAssetsLibrary
{
}
@property (retain) ALAsset *asset;
@property (retain) ALAssetRepresentation *result;
- (ALAssetRepresentation *) assetForURLSync:(NSURL*) uri;
@end
/**
* GstIOSAssetSrc:
*
* Opaque #GstIOSAssetSrc structure.
*/
struct _GstIOSAssetSrc {
GstBaseSrc element;
/*< private >*/
gchar * uri; /* asset uri */
NSURL * url; /* asset url */
ALAssetRepresentation * asset; /* asset representation */
GstAssetsLibrary * library; /* assets library */
};
struct _GstIOSAssetSrcClass {
GstBaseSrcClass parent_class;
};
GType gst_ios_asset_src_get_type (void);
G_END_DECLS
#endif /* __GST_IOS_ASSET_SRC_H__ */

504
sys/applemedia/iosassetsrc.m Normal file
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@ -0,0 +1,504 @@
/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000,2005 Wim Taymans <wim@fluendo.com>
*
* gstios_assetsrc.c:
*
* 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:element-ios_assetsrc
* @see_also: #GstIOSAssetSrc
*
* Read data from an iOS asset from the media library.
*
* <refsect2>
* <title>Example launch line</title>
* |[
* gst-launch iosassetsrc uri=assets-library://asset/asset.M4V?id=11&ext=M4V ! decodebin2 ! autoaudiosink
* ]| Plays asset with id a song.ogg from local dir.
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <gst/gst.h>
#include "iosassetsrc.h"
static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
GST_DEBUG_CATEGORY_STATIC (gst_ios_asset_src_debug);
#define GST_CAT_DEFAULT gst_ios_asset_src_debug
#define DEFAULT_BLOCKSIZE 4*1024
#define OBJC_CALLOUT_BEGIN() \
NSAutoreleasePool *pool; \
\
pool = [[NSAutoreleasePool alloc] init]
#define OBJC_CALLOUT_END() \
[pool release]
enum
{
ARG_0,
ARG_URI,
};
static void gst_ios_asset_src_finalize (GObject * object);
static void gst_ios_asset_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_ios_asset_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_ios_asset_src_start (GstBaseSrc * basesrc);
static gboolean gst_ios_asset_src_stop (GstBaseSrc * basesrc);
static gboolean gst_ios_asset_src_is_seekable (GstBaseSrc * src);
static gboolean gst_ios_asset_src_get_size (GstBaseSrc * src, guint64 * size);
static GstFlowReturn gst_ios_asset_src_create (GstBaseSrc * src, guint64 offset,
guint length, GstBuffer ** buffer);
static gboolean gst_ios_asset_src_query (GstBaseSrc * src, GstQuery * query);
static void gst_ios_asset_src_uri_handler_init (gpointer g_iface,
gpointer iface_data);
static void
_do_init (GType ios_assetsrc_type)
{
static const GInterfaceInfo urihandler_info = {
gst_ios_asset_src_uri_handler_init,
NULL,
NULL
};
g_type_add_interface_static (ios_assetsrc_type, GST_TYPE_URI_HANDLER,
&urihandler_info);
GST_DEBUG_CATEGORY_INIT (gst_ios_asset_src_debug, "iosassetsrc", 0, "iosassetsrc element");
}
GST_BOILERPLATE_FULL (GstIOSAssetSrc, gst_ios_asset_src, GstBaseSrc, GST_TYPE_BASE_SRC,
_do_init);
static void
gst_ios_asset_src_base_init (gpointer g_class)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_set_details_simple (gstelement_class,
"IOSAsset Source",
"Source/File",
"Read from arbitrary point in a iOS asset",
"Andoni Morales Alastruey <amorales@fluendo.com>");
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&srctemplate));
}
static void
gst_ios_asset_src_class_init (GstIOSAssetSrcClass * klass)
{
GObjectClass *gobject_class;
GstBaseSrcClass *gstbasesrc_class;
gobject_class = G_OBJECT_CLASS (klass);
gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
gobject_class->set_property = gst_ios_asset_src_set_property;
gobject_class->get_property = gst_ios_asset_src_get_property;
g_object_class_install_property (gobject_class, ARG_URI,
g_param_spec_string ("uri", "Asset URI",
"URI of the asset to read", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
GST_PARAM_MUTABLE_READY));
gobject_class->finalize = gst_ios_asset_src_finalize;
gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_ios_asset_src_start);
gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_ios_asset_src_stop);
gstbasesrc_class->is_seekable = GST_DEBUG_FUNCPTR (gst_ios_asset_src_is_seekable);
gstbasesrc_class->get_size = GST_DEBUG_FUNCPTR (gst_ios_asset_src_get_size);
gstbasesrc_class->create = GST_DEBUG_FUNCPTR (gst_ios_asset_src_create);
gstbasesrc_class->query = GST_DEBUG_FUNCPTR (gst_ios_asset_src_query);
}
static void
gst_ios_asset_src_init (GstIOSAssetSrc * src, GstIOSAssetSrcClass * g_class)
{
OBJC_CALLOUT_BEGIN ();
src->uri = NULL;
src->asset = NULL;
src->library = [[[GstAssetsLibrary alloc] init] retain];
gst_base_src_set_blocksize (GST_BASE_SRC (src), DEFAULT_BLOCKSIZE);
OBJC_CALLOUT_END ();
}
static void
gst_ios_asset_src_free_resources (GstIOSAssetSrc *src)
{
OBJC_CALLOUT_BEGIN ();
if (src->asset != NULL) {
[src->asset release];
src->asset = NULL;
}
if (src->url != NULL) {
[src->url release];
src->url = NULL;
}
if (src->uri != NULL) {
g_free (src->uri);
src->uri = NULL;
}
OBJC_CALLOUT_END ();
}
static void
gst_ios_asset_src_finalize (GObject * object)
{
GstIOSAssetSrc *src;
OBJC_CALLOUT_BEGIN ();
src = GST_IOS_ASSET_SRC (object);
gst_ios_asset_src_free_resources (src);
[src->library release];
OBJC_CALLOUT_END ();
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_ios_asset_src_set_uri (GstIOSAssetSrc * src, const gchar * uri)
{
GstState state;
NSString *nsuristr;
NSURL *url;
OBJC_CALLOUT_BEGIN ();
/* the element must be stopped in order to do this */
GST_OBJECT_LOCK (src);
state = GST_STATE (src);
if (state != GST_STATE_READY && state != GST_STATE_NULL)
goto wrong_state;
GST_OBJECT_UNLOCK (src);
gst_ios_asset_src_free_resources (src);
nsuristr = [[NSString alloc] initWithUTF8String:uri];
url = [[NSURL alloc] initWithString:nsuristr];
if (url == NULL) {
GST_ERROR_OBJECT (src, "Invalid URI : %s", src->uri);
return FALSE;
}
GST_INFO_OBJECT (src, "URI : %s", src->uri);
src->url = url;
src->uri = g_strdup (uri);
g_object_notify (G_OBJECT (src), "uri");
gst_uri_handler_new_uri (GST_URI_HANDLER (src), src->uri);
OBJC_CALLOUT_END ();
return TRUE;
/* ERROR */
wrong_state:
{
g_warning ("Changing the 'uri' property on iosassetsrc when an asset is "
"open is not supported.");
GST_OBJECT_UNLOCK (src);
OBJC_CALLOUT_END ();
return FALSE;
}
}
static void
gst_ios_asset_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstIOSAssetSrc *src;
g_return_if_fail (GST_IS_IOS_ASSET_SRC (object));
src = GST_IOS_ASSET_SRC (object);
switch (prop_id) {
case ARG_URI:
gst_ios_asset_src_set_uri (src, g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_ios_asset_src_get_property (GObject * object, guint prop_id, GValue * value,
GParamSpec * pspec)
{
GstIOSAssetSrc *src;
g_return_if_fail (GST_IS_IOS_ASSET_SRC (object));
src = GST_IOS_ASSET_SRC (object);
switch (prop_id) {
case ARG_URI:
g_value_set_string (value, src->uri);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstFlowReturn
gst_ios_asset_src_create (GstBaseSrc * basesrc, guint64 offset, guint length,
GstBuffer ** buffer)
{
GstBuffer *buf;
NSError *err = nil;
guint bytes_read;
GstFlowReturn ret;
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (basesrc);
OBJC_CALLOUT_BEGIN ();
buf = gst_buffer_try_new_and_alloc (length);
if (G_UNLIKELY (buf == NULL && length > 0)) {
GST_ERROR_OBJECT (src, "Failed to allocate %u bytes", length);
ret = GST_FLOW_ERROR;
goto exit;
}
/* No need to read anything if length is 0 */
GST_BUFFER_SIZE (buf) = 0;
GST_BUFFER_OFFSET (buf) = offset;
GST_BUFFER_OFFSET_END (buf) = offset;
bytes_read = [src->asset getBytes: GST_BUFFER_DATA (buf)
fromOffset:offset
length:length
error:&err];
if (G_UNLIKELY (err != NULL)) {
goto could_not_read;
}
/* we should eos if we read less than what was requested */
if (G_UNLIKELY (bytes_read < length)) {
goto eos;
}
GST_BUFFER_SIZE (buf) = bytes_read;
GST_BUFFER_OFFSET_END (buf) = offset + bytes_read;
*buffer = buf;
ret = GST_FLOW_OK;
goto exit;
/* ERROR */
could_not_read:
{
GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
gst_buffer_unref (buf);
ret = GST_FLOW_ERROR;
goto exit;
}
eos:
{
GST_DEBUG ("EOS");
gst_buffer_unref (buf);
ret = GST_FLOW_UNEXPECTED;
goto exit;
}
exit:
{
OBJC_CALLOUT_END ();
return ret;
}
}
static gboolean
gst_ios_asset_src_query (GstBaseSrc * basesrc, GstQuery * query)
{
gboolean ret = FALSE;
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (basesrc);
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_URI:
gst_query_set_uri (query, src->uri);
ret = TRUE;
break;
default:
ret = FALSE;
break;
}
if (!ret)
ret = GST_BASE_SRC_CLASS (parent_class)->query (basesrc, query);
return ret;
}
static gboolean
gst_ios_asset_src_is_seekable (GstBaseSrc * basesrc)
{
return TRUE;
}
static gboolean
gst_ios_asset_src_get_size (GstBaseSrc * basesrc, guint64 * size)
{
GstIOSAssetSrc *src;
src = GST_IOS_ASSET_SRC (basesrc);
OBJC_CALLOUT_BEGIN ();
*size = (guint64) [src->asset size];
OBJC_CALLOUT_END ();
return TRUE;
}
static gboolean
gst_ios_asset_src_start (GstBaseSrc * basesrc)
{
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (basesrc);
gboolean ret = TRUE;
OBJC_CALLOUT_BEGIN ();
src->asset = [[src->library assetForURLSync: src->url] retain];
if (src->asset == NULL) {
GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
("Could not open asset \"%s\" for reading.", src->uri),
GST_ERROR_SYSTEM);
ret = FALSE;
};
OBJC_CALLOUT_END ();
return ret;
}
/* unmap and close the ios_asset */
static gboolean
gst_ios_asset_src_stop (GstBaseSrc * basesrc)
{
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (basesrc);
OBJC_CALLOUT_BEGIN ();
[src->asset release];
OBJC_CALLOUT_END ();
return TRUE;
}
static GstURIType
gst_ios_asset_src_uri_get_type (void)
{
return GST_URI_SRC;
}
static gchar **
gst_ios_asset_src_uri_get_protocols (void)
{
static gchar *protocols[] = { (char *) "assets-library", NULL };
return protocols;
}
static const gchar *
gst_ios_asset_src_uri_get_uri (GstURIHandler * handler)
{
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (handler);
return src->uri;
}
static gboolean
gst_ios_asset_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
{
GstIOSAssetSrc *src = GST_IOS_ASSET_SRC (handler);
GError *error = NULL;
if (! g_str_has_prefix (uri, "assets-library://")) {
GST_WARNING_OBJECT (src, "Invalid URI '%s' for ios_assetsrc: %s", uri,
error->message);
return FALSE;
}
return gst_ios_asset_src_set_uri (src, uri);
}
static void
gst_ios_asset_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
{
GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
iface->get_type = gst_ios_asset_src_uri_get_type;
iface->get_protocols = gst_ios_asset_src_uri_get_protocols;
iface->get_uri = gst_ios_asset_src_uri_get_uri;
iface->set_uri = gst_ios_asset_src_uri_set_uri;
}
@implementation GstAssetsLibrary
@synthesize asset;
@synthesize result;
- (id) init
{
self = [super init];
return self;
}
- (ALAssetRepresentation *) assetForURLSync:(NSURL*) uri
{
dispatch_semaphore_t sema = dispatch_semaphore_create(0);
dispatch_queue_t queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);
dispatch_async(queue, ^{
[self assetForURL:uri resultBlock:
^(ALAsset *myasset)
{
self.asset = myasset;
self.result = [myasset defaultRepresentation];
dispatch_semaphore_signal(sema);
}
failureBlock:
^(NSError *myerror)
{
self.result = nil;
dispatch_semaphore_signal(sema);
}
];
});
dispatch_semaphore_wait(sema, DISPATCH_TIME_FOREVER);
dispatch_release(sema);
return self.result;
}
@end

3
sys/applemedia/plugin.m
View file

@ -23,6 +23,7 @@
#ifdef HAVE_IOS
#include "avfvideosrc.h"
#include "iosassetsrc.h"
#else
#include "qtkitvideosrc.h"
#include <Foundation/Foundation.h>
@ -50,6 +51,8 @@ plugin_init (GstPlugin * plugin)
gboolean res = TRUE;
#ifdef HAVE_IOS
res &= gst_element_register (plugin, "iosassetsrc", GST_RANK_SECONDARY,
GST_TYPE_IOS_ASSET_SRC);
#if 0
res = gst_element_register (plugin, "avfvideosrc", GST_RANK_NONE,
GST_TYPE_AVF_VIDEO_SRC);