VLCMedia: added a new API to determine whether the media size is supposedly suitable for the current device or not

Headers/Public/VLCMedia.h

@@ -237,6 +237,11 @@ typedef enum VLCMediaState
 @property (readonly) VLCMediaState state;
 
 /**
+ * returns a bool whether is the media is expected to play fluently on this
+ * device or not. It always returns YES on a Mac.*/
+- (BOOL)isMediaSizeSuitableForDevice;
+
+/**
  * Tracks information NSDictionary Possible Keys
  */
 

Sources/VLCMedia.m

@@ -30,6 +30,7 @@
 #import "VLCLibrary.h"
 #import "VLCLibVLCBridging.h"
 #import <vlc/libvlc.h>
+#import <sys/sysctl.h> // for sysctlbyname
 
 /* Meta Dictionary Keys */
 NSString * VLCMetaInformationTitle          = @"title";
@@ -453,6 +454,57 @@ NSString *VLCMediaTracksInformationTextEncoding = @"encoding"; // NSString
     return array;
 }
 
+- (BOOL)isMediaSizeSuitableForDevice
+{
+#if TARGET_OS_IPHONE
+    // Trigger parsing if needed
+    [self parseIfNeeded];
+
+    NSUInteger biggestWidth = 0;
+    NSUInteger biggestHeight = 0;
+    libvlc_media_track_t **tracksInfo;
+    unsigned int count = libvlc_media_tracks_get(p_md, &tracksInfo);
+    for (NSUInteger i = 0; i < count; i++) {
+        switch (tracksInfo[i]->i_type) {
+            case libvlc_track_video:
+                if (tracksInfo[i]->video->i_width > biggestWidth)
+                    biggestWidth = tracksInfo[i]->video->i_width;
+                if (tracksInfo[i]->video->i_height > biggestHeight)
+                    biggestHeight = tracksInfo[i]->video->i_height;
+                break;
+            default:
+                break;
+        }
+    }
+
+    if (biggestHeight > 0 && biggestWidth > 0) {
+        size_t size;
+        sysctlbyname("hw.machine", NULL, &size, NULL, 0);
+
+        char *answer = malloc(size);
+        sysctlbyname("hw.machine", answer, &size, NULL, 0);
+
+        NSString *currentMachine = [NSString stringWithCString:answer encoding: NSUTF8StringEncoding];
+        free(answer);
+
+        NSUInteger totalNumberOfPixels = biggestWidth * biggestHeight;
+
+        if ([currentMachine hasPrefix:@"iPhone2"] || [currentMachine hasPrefix:@"iPhone3"] || [currentMachine hasPrefix:@"iPad1"] || [currentMachine hasPrefix:@"iPod3"] || [currentMachine hasPrefix:@"iPod4"]) {
+            // iPhone 3GS, iPhone 4, first gen. iPad, 3rd and 4th generation iPod touch
+            return (totalNumberOfPixels < 600000); // between 480p and 720p
+        } else if ([currentMachine hasPrefix:@"iPhone4"] || [currentMachine hasPrefix:@"iPad3,1"] || [currentMachine hasPrefix:@"iPad3,2"] || [currentMachine hasPrefix:@"iPad3,3"] || [currentMachine hasPrefix:@"iPod4"] || [currentMachine hasPrefix:@"iPad2"] || [currentMachine hasPrefix:@"iPod5"]) {
+            // iPhone 4S, iPad 2 and 3, iPod 4 and 5
+            return (totalNumberOfPixels < 922000); // 720p
+        } else {
+            // iPhone 5, iPad 4
+            return (totalNumberOfPixels < 2074000); // 1080p
+        }
+    }
+#endif
+
+    return YES;
+}
+
 @synthesize url;
 @synthesize subitems;
 @synthesize metaDictionary;