avtimecodereadwrite/main.m
/* |
File: main.m |
Abstract: Standard main file. Reads in and parses arguments to either read/write timecode samples. |
Version: 1.2 |
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*/ |
#import <Foundation/Foundation.h> |
#import <AVFoundation/AVFoundation.h> |
#import <getopt.h> |
#import "AVTimecodeReader.h" |
#import "AVTimecodeWriter.h" |
static void usage() |
{ |
printf("Usage: avtimecodereadwrite mode_name [options] [input_source] [output_file]\n"); |
printf("By default, input_source is a path to a local file.\n"); |
printf("\nModes:\n"); |
printf(" read\n"); |
printf(" write\n"); |
printf("\nOptions:\n"); |
printf(" -i, --input=timecode file, A file containing frame numbers and timecodes, where each line represents a pair frameNum HH:MM:SS./,FF (. for non-drop and , drop frame) to be written out to a movie\n"); |
printf(" Example file format: \n"); |
printf(" frame1 H1:M1:S1.F1\n"); |
printf(" frame2 H2:M2:S2.F2\n"); |
printf(" -h, --help Print this message and exit\n"); |
exit(1); |
} |
int main(int argc, char *argv[]) |
{ |
@autoreleasepool { |
int c = -1; |
NSString *timecodeInput = NULL; |
NSURL *sourceURL = NULL; |
NSURL *destURL = NULL; |
NSFileManager *fm = [NSFileManager defaultManager]; |
static struct option longopts[] = |
{ |
{"input", required_argument, NULL, 'i'}, |
{"help", no_argument, NULL, 'h'}, |
{0, 0, 0, 0} |
}; |
const char *shortopts = "i:h"; |
if (argc < 2) { |
usage(); |
exit(-1); |
} |
while ((c = getopt_long(argc, argv, shortopts, longopts, NULL)) != -1) { |
switch (c) { |
case 'i': |
timecodeInput = [NSString stringWithUTF8String:optarg]; |
break; |
case 'h': |
usage(); |
break; |
default: |
usage(); |
break; |
} |
} |
int nextArgIndex = optind; |
if (nextArgIndex >= argc) |
{ |
printf("%s: missing required mode name\n", argv[0]); |
usage(); |
exit(-1); |
} |
const char *mode = argv[nextArgIndex]; |
++nextArgIndex; |
BOOL testTakesDestURL = (strcmp(mode, "write") == 0); |
if (nextArgIndex < argc) { |
const char *sourceSpecifier = argv[nextArgIndex]; |
sourceURL = [NSURL fileURLWithPath:[NSString stringWithUTF8String:sourceSpecifier]]; |
NSCAssert(sourceURL != nil, @"Invalid source URL"); |
++nextArgIndex; |
} |
if ((nextArgIndex < argc) && testTakesDestURL) |
{ |
NSString *destPath = [fm stringWithFileSystemRepresentation:argv[nextArgIndex] length:strlen(argv[nextArgIndex])]; |
destPath = [destPath stringByStandardizingPath]; |
destURL = [NSURL fileURLWithPath:destPath]; |
NSError *error = nil; |
[fm removeItemAtPath:destPath error:&error]; |
NSCAssert(destURL != nil, @"Invalid destination URL"); |
++nextArgIndex; |
} else if (testTakesDestURL) { |
printf("%s: writer needs destination URL\n", argv[0]); |
usage(); |
exit(-1); |
} |
if (nextArgIndex > argc) |
{ |
printf("%s: too many arguments\n", argv[0]); |
usage(); |
exit(-1); |
} |
AVURLAsset *sourceAsset = [[AVURLAsset alloc] initWithURL:sourceURL options:nil]; |
if (strcmp(mode, "read") == 0) { |
AVTimecodeReader *timecodeReader = [[AVTimecodeReader alloc] initWithSourceAsset:sourceAsset]; |
NSArray *outputTimecodes = [timecodeReader readTimecodeSamples]; |
for (NSValue *timecodeValue in outputTimecodes) { |
CVSMPTETime timecode = {0}; |
[timecodeValue getValue:&timecode]; |
NSLog(@"%@",[NSString stringWithFormat:@"HH:MM:SS:FF => %02d:%02d:%02d:%02d", timecode.hours, timecode.minutes, timecode.seconds, timecode.frames]); |
} |
} else if (strcmp(mode, "write") == 0) { |
NSMutableDictionary *timecodeSamples = [NSMutableDictionary dictionary]; |
NSError *error = nil; |
NSString *timecodes = [NSString stringWithContentsOfFile:timecodeInput encoding:NSUTF8StringEncoding error:&error]; |
if (error) { |
NSLog(@"%s: Could not read timecode input file", argv[0]); |
} else { |
NSArray *timecodeInputValues = [timecodes componentsSeparatedByString:@"\n"]; |
for (NSString *frameNumTimecodePair in timecodeInputValues) { |
NSArray *frameTcValues = [frameNumTimecodePair componentsSeparatedByString:@" "]; |
if ([frameTcValues count] > 1) { |
[timecodeSamples setObject:[frameTcValues objectAtIndex:1] forKey:[NSNumber numberWithInt:[(NSString*)[frameTcValues objectAtIndex:0] intValue]]]; |
} |
} |
AVTimecodeWriter *timecodeWriter = [[AVTimecodeWriter alloc] initWithSourceAsset:sourceAsset destinationAssetURL:destURL timecodeSamples:timecodeSamples]; |
[timecodeWriter writeTimecodeSamples]; |
} |
} else { |
printf("%s: unrecognized mode %s\n", argv[0], mode); |
usage(); |
exit(-1); |
} |
} |
return 0; |
} |
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