gstreamer/sys/applemedia/cmapi.c

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/*
* Copyright (C) 2010 Ole André Vadla Ravnås <oravnas@cisco.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.
*/
#include "cmapi.h"
#include "dynapi-internal.h"
#include <gmodule.h>
#define CM_FRAMEWORK_PATH "/System/Library/Frameworks/" \
"CoreMedia.framework/CoreMedia"
#define CM_FRAMEWORK_PATH_OLD "/System/Library/PrivateFrameworks/" \
"CoreMedia.framework/CoreMedia"
G_DEFINE_TYPE (GstCMApi, gst_cm_api, GST_TYPE_DYN_API);
static void
gst_cm_api_init (GstCMApi * self)
{
}
static void
gst_cm_api_class_init (GstCMApiClass * klass)
{
}
#define SYM_SPEC(name) GST_DYN_SYM_SPEC (GstCMApi, name)
GstCMApi *
gst_cm_api_obtain (GError ** error)
{
static const GstDynSymSpec symbols[] = {
SYM_SPEC (FigBaseObjectGetVTable),
SYM_SPEC (CMGetAttachment),
SYM_SPEC (FigFormatDescriptionRelease),
SYM_SPEC (FigFormatDescriptionRetain),
SYM_SPEC (CMFormatDescriptionEqual),
SYM_SPEC (CMFormatDescriptionGetExtension),
SYM_SPEC (CMFormatDescriptionGetMediaType),
SYM_SPEC (CMFormatDescriptionGetMediaSubType),
SYM_SPEC (CMVideoFormatDescriptionCreate),
SYM_SPEC
(FigVideoFormatDescriptionCreateWithSampleDescriptionExtensionAtom),
SYM_SPEC (CMVideoFormatDescriptionGetDimensions),
SYM_SPEC (CMTimeMake),
SYM_SPEC (CMSampleBufferCreate),
SYM_SPEC (CMSampleBufferDataIsReady),
SYM_SPEC (CMSampleBufferGetDataBuffer),
SYM_SPEC (CMSampleBufferGetFormatDescription),
SYM_SPEC (CMSampleBufferGetImageBuffer),
SYM_SPEC (CMSampleBufferGetNumSamples),
SYM_SPEC (CMSampleBufferGetSampleAttachmentsArray),
SYM_SPEC (CMSampleBufferGetSampleSize),
SYM_SPEC (FigSampleBufferRelease),
SYM_SPEC (FigSampleBufferRetain),
SYM_SPEC (CMBlockBufferCreateWithMemoryBlock),
SYM_SPEC (CMBlockBufferGetDataLength),
SYM_SPEC (CMBlockBufferGetDataPointer),
SYM_SPEC (FigBlockBufferRelease),
SYM_SPEC (FigBlockBufferRetain),
SYM_SPEC (CMBufferQueueDequeueAndRetain),
SYM_SPEC (CMBufferQueueGetBufferCount),
SYM_SPEC (CMBufferQueueInstallTrigger),
SYM_SPEC (CMBufferQueueIsEmpty),
SYM_SPEC (FigBufferQueueRelease),
SYM_SPEC (CMBufferQueueRemoveTrigger),
SYM_SPEC (CMBufferQueueSetValidationCallback),
SYM_SPEC (kCMFormatDescriptionExtension_SampleDescriptionExtensionAtoms),
SYM_SPEC (kCMSampleAttachmentKey_DependsOnOthers),
SYM_SPEC (kCMTimeInvalid),
{NULL, 0},
};
GstCMApi *result;
GModule *module;
/* We cannot stat() the library as it may not be present on the filesystem.
* This is the case on newer versions of iOS where system libraries are all
* part of dyld_shared_cache... */
module = g_module_open (CM_FRAMEWORK_PATH, 0);
if (module != NULL) {
result = _gst_dyn_api_new (gst_cm_api_get_type (), CM_FRAMEWORK_PATH,
symbols, error);
g_module_close (module);
} else {
GstDynSymSpec *old_symbols;
guint i;
old_symbols = g_memdup (symbols, sizeof (symbols));
for (i = 0; old_symbols[i].name != NULL; i++) {
const gchar *name = old_symbols[i].name;
const gchar *translated_name;
if (g_str_has_prefix (name, "CM"))
translated_name = g_strconcat ("Fig", name + 2, NULL);
else if (g_str_has_prefix (name, "kCM"))
translated_name = g_strconcat ("kFig", name + 3, NULL);
else
translated_name = g_strdup (name);
old_symbols[i].name = translated_name;
}
result = _gst_dyn_api_new (gst_cm_api_get_type (), CM_FRAMEWORK_PATH_OLD,
old_symbols, error);
for (i = 0; old_symbols[i].name != NULL; i++)
g_free ((gpointer) old_symbols[i].name);
g_free (old_symbols);
}
return result;
}