65 lines
2.7 KiB
Mathematica
65 lines
2.7 KiB
Mathematica
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/*
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* Copyright (c) 2018-2022 Taner Sener
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*
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* This file is part of FFmpegKit.
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*
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* FFmpegKit is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* FFmpegKit is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with FFmpegKit. If not, see <http://www.gnu.org/licenses/>.
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*/
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#import "MediaInformationJsonParser.h"
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NSString* const MediaInformationJsonParserKeyStreams = @"streams";
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NSString* const MediaInformationJsonParserKeyChapters = @"chapters";
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@implementation MediaInformationJsonParser
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+ (MediaInformation*)from:(NSString*)ffprobeJsonOutput {
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@try {
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return [self fromWithError:ffprobeJsonOutput];
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} @catch (NSException *exception) {
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NSLog(@"MediaInformation parsing failed: %@.\n", [NSString stringWithFormat:@"%@\n%@", [exception userInfo], [exception callStackSymbols]]);
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return nil;
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}
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}
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+ (MediaInformation*)fromWithError:(NSString*)ffprobeJsonOutput {
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NSError* error = nil;
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NSData *jsonData = [ffprobeJsonOutput dataUsingEncoding:NSUTF8StringEncoding];
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NSDictionary *jsonDictionary = [NSJSONSerialization JSONObjectWithData:jsonData options:kNilOptions error:&error];
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if (error != nil) {
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@throw [NSException exceptionWithName:@"ParsingException" reason:[NSString stringWithFormat:@"%ld",(long)[error code]] userInfo:[error userInfo]];
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}
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if (jsonDictionary == nil) {
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return nil;
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}
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NSArray* jsonStreamArray = [jsonDictionary objectForKey:MediaInformationJsonParserKeyStreams];
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NSMutableArray *streamArray = [[NSMutableArray alloc] init];
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for(int i = 0; i<jsonStreamArray.count; i++) {
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NSDictionary *streamDictionary = [jsonStreamArray objectAtIndex:i];
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[streamArray addObject:[[StreamInformation alloc] init:streamDictionary]];
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}
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NSArray* jsonChapterArray = [jsonDictionary objectForKey:MediaInformationJsonParserKeyChapters];
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NSMutableArray *chapterArray = [[NSMutableArray alloc] init];
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for(int i = 0; i<jsonChapterArray.count; i++) {
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NSDictionary *chapterDictionary = [jsonChapterArray objectAtIndex:i];
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[chapterArray addObject:[[Chapter alloc] init:chapterDictionary]];
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}
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return [[MediaInformation alloc] init:jsonDictionary withStreams:streamArray withChapters:chapterArray];
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}
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@end
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