NSData+GStreamer

NSData+GStreamer.h

@import Foundation;
#include <gst/gst.h>
 
@interface NSData (GStreamer)
 
- (GstBuffer *)gstBuffer;
 
@end
 
@interface NSMutableData (GStreamer)
 
+ (NSMutableData *)dataWithGstBuffer:(GstBuffer *)buffer;
 
@end

NSData+GStreamer.m

#import "NSData+GStreamer.h"
 
@implementation NSData (GstBuffer)
 
- (GstBuffer *)gstBuffer
{
    const void * bytes = [self bytes];
    gsize length = [self length];
 
    return gst_buffer_new_wrapped_full(GST_MEMORY_FLAG_READONLY,
                                       (gpointer)bytes, length, 0, length,
                                       (gpointer)CFBridgingRetain(self),
                                       (GDestroyNotify)CFRelease);
}
 
@end
 
@implementation NSMutableData (GstBuffer)
 
+ (NSMutableData *)dataWithGstBuffer:(GstBuffer *)buffer
{
    gsize size = gst_buffer_get_size(buffer);
    NSMutableData *data = [NSMutableData dataWithLength:size];
    gst_buffer_extract(buffer, 0, [data mutableBytes], size);
    return data;
}
 
@end