moonlight-ios/Limelight-iOS/Video/VideoDepacketizer.m

//
//  VideoDepacketizer.m
//  Limelight-iOS
//
//  Created by Diego Waxemberg on 1/18/14.
//  Copyright (c) 2014 Diego Waxemberg. All rights reserved.
//

#import "VideoDepacketizer.h"

@implementation VideoDepacketizer
static int BUFFER_LENGTH = 131072;

- (void) readFile:(NSString*) file
{
    NSLog(@"Allocating input stream\n");
    NSInputStream* inStream = [[NSInputStream alloc] initWithFileAtPath:file];
    NSLog(@"Allocating byteBuffer");
    self.byteBuffer = malloc(BUFFER_LENGTH);
    NSLog(@"byte pointer: %p", self.byteBuffer);
    [inStream setDelegate:self];
    
    NSLog(@"Allocating decoder");
    self.decoder = [[VideoDecoder alloc]init];
    NSLog(@"old self pointer: %p", self);
    
    [inStream open];
    while ([inStream streamStatus] != NSStreamStatusOpen) {
        NSLog(@"stream status: %d", [inStream streamStatus]);
        sleep(1);
    }
    while ([inStream streamStatus] != NSStreamStatusAtEnd)
    {
    unsigned int len = 0;
    NSLog(@"Reading File\n");
    NSLog(@"stream pointer: %p", inStream);
    NSLog(@"self pointer: %p", self);
    NSLog(@"byte buffer pointer: %p", self.byteBuffer);
    len = [(NSInputStream *)inStream read:self.byteBuffer maxLength:BUFFER_LENGTH];
    if (len)
    {
        NSLog(@"len: %u\n", len);
        BOOL firstStart = false;
        for (int i = 0; i < len - 4; i++) {
            if (self.byteBuffer[i] == 0 && self.byteBuffer[i+1] == 0
                && self.byteBuffer[i+2] == 0 && self.byteBuffer[i+3] == 1)
            {
                NSLog(@"i: %d", i);
                self.offset++;
                if (firstStart)
                {
                    // decode the first i-1 bytes
                    [self.decoder decode:self.byteBuffer length:i-1];
                    [inStream setProperty:[[NSNumber alloc] initWithInt:self.offset-4] forKey:NSStreamFileCurrentOffsetKey];
                    self.offset -= 4;
                } else
                {
                    firstStart = true;
                }
            }
        }
    }
    else
    {
        NSLog(@"No Buffer!");
    }
    }

    
}

- (void)stream:(NSStream *)stream handleEvent:(NSStreamEvent)eventCode
{
    switch (eventCode)
    {
        case NSStreamEventHasBytesAvailable:
        {
                        break;
        }
        default:
        {
            NSLog(@"eventCode: %u", eventCode);
        }

    }
}


@end