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Compressor.m
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Compressor.m
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#import "Compressor.h"
#import <React/RCTBridgeModule.h>
//Image
#import "Image/ImageCompressor.h"
#import "Image/ImageCompressorOptions.h"
#import <React/RCTEventEmitter.h>
#import <AVFoundation/AVFoundation.h>
#define AlAsset_Library_Scheme @"assets-library"
@implementation Compressor
AVAssetWriter *assetWriter=nil;
RCT_EXPORT_MODULE()
//Image
RCT_EXPORT_METHOD(
image_compress: (NSString*) value
optionsDict: (NSDictionary*) optionsDict
resolver: (RCTPromiseResolveBlock) resolve
rejecter: (RCTPromiseRejectBlock) reject) {
@try {
ImageCompressorOptions *options = [ImageCompressorOptions fromDictionary:optionsDict];
UIImage *image;
switch (options.input) {
case base64:
image = [ImageCompressor decodeImage: value];
break;
case uri:
image = [ImageCompressor loadImage: value];
break;
default:
reject(@"unsupported_value", @"Unsupported value type.", nil);
return;
}
image=[ImageCompressor scaleAndRotateImage:image];
NSString *outputExtension=[ImageCompressorOptions getOutputInString:options.output];
UIImage *resizedImage = [ImageCompressor resize:image maxWidth:options.maxWidth maxHeight:options.maxHeight];
Boolean isBase64=options.returnableOutputType ==rbase64;
NSString *result = [ImageCompressor compress:resizedImage output:options.output quality:options.quality outputExtension:outputExtension isBase64:isBase64];
resolve(result);
}
@catch (NSException *exception) {
reject(exception.name, exception.reason, nil);
}
}
//Audio
RCT_EXPORT_METHOD(
compress_audio: (NSString*) filePath
optionsDict: (NSDictionary*) optionsDict
resolver: (RCTPromiseResolveBlock) resolve
rejecter: (RCTPromiseRejectBlock) reject) {
@try {
if([filePath containsString:@"file://"])
{
filePath=[filePath stringByReplacingOccurrencesOfString:@"file://"
withString:@""];
}
NSFileManager *fileManager = [NSFileManager defaultManager];
BOOL isDir;
if (![fileManager fileExistsAtPath:filePath isDirectory:&isDir] || isDir){
NSError *err = [NSError errorWithDomain:@"file not found" code:-15 userInfo:nil];
reject([NSString stringWithFormat: @"%lu", (long)err.code], err.localizedDescription, err);
return;
}
NSDictionary *assetOptions = @{AVURLAssetPreferPreciseDurationAndTimingKey: @YES};
AVURLAsset *asset = [AVURLAsset URLAssetWithURL:[NSURL fileURLWithPath:filePath] options:assetOptions];
NSString *quality=[optionsDict objectForKey:@"quality"];
NSString *qualityConstant=[self getAudioQualityConstant:quality];
[self audo_compress_helper:asset qualityConstant:qualityConstant complete:^(NSString *mp3Path, BOOL finished) {
if(finished)
{
resolve([NSString stringWithFormat: @"file:/%@", mp3Path]);
}
else
{
reject(@"Error", @"Something went wrong", nil);
}
}];
}
@catch (NSException *exception) {
reject(exception.name, exception.reason, nil);
}
}
- (NSString *)getAudioQualityConstant:(NSString *)quality
{
NSMutableArray *audioQualityArray = [[NSMutableArray alloc]initWithObjects:@"low", @"medium", @"high", nil];
int index = [audioQualityArray indexOfObject:quality];
switch (index) {
case 0:
return AVAssetExportPresetLowQuality;
break;
case 1:
return AVAssetExportPresetMediumQuality;
break;
case 2:
return AVAssetExportPresetHighestQuality;
break;
}
return AVAssetExportPresetMediumQuality;
}
- (void)audo_compress_helper:(AVURLAsset *)avAsset qualityConstant:(NSString *)qualityConstant complete:(void (^)(NSString *mp3Path, BOOL finished))completeCallback {
NSString *path;
if ([avAsset.URL.scheme isEqualToString:AlAsset_Library_Scheme]) {
path = avAsset.URL.query;
if (path.length == 0) {
completeCallback(nil, NO);
return;
}
}else {
path = avAsset.URL.path;
if (!path || ![[NSFileManager defaultManager] fileExistsAtPath:path]) {
completeCallback(nil, NO);
return;
}
}
NSString *mp3Path = [ImageCompressor generateCacheFilePath:@"m4a"];;
if ([[NSFileManager defaultManager] fileExistsAtPath:mp3Path]) {
if (completeCallback)
completeCallback(mp3Path, YES);
return;
}
NSURL *mp3Url;
NSArray *compatiblePresets = [AVAssetExportSession exportPresetsCompatibleWithAsset:avAsset];
if ([compatiblePresets containsObject:qualityConstant]) {
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc]
initWithAsset:avAsset
presetName:AVAssetExportPresetAppleM4A];
mp3Url = [NSURL fileURLWithPath:mp3Path];
exportSession.outputURL = mp3Url;
exportSession.shouldOptimizeForNetworkUse = YES;
exportSession.outputFileType = AVFileTypeAppleM4A;
[exportSession exportAsynchronouslyWithCompletionHandler:^{
BOOL finished = NO;
switch ([exportSession status]) {
case AVAssetExportSessionStatusFailed:
NSLog(@"AVAssetExportSessionStatusFailed, error:%@.", exportSession.error);
break;
case AVAssetExportSessionStatusCancelled:
NSLog(@"AVAssetExportSessionStatusCancelled.");
break;
case AVAssetExportSessionStatusCompleted:
NSLog(@"AVAssetExportSessionStatusCompleted.");
finished = YES;
break;
case AVAssetExportSessionStatusUnknown:
NSLog(@"AVAssetExportSessionStatusUnknown");
break;
case AVAssetExportSessionStatusWaiting:
NSLog(@"AVAssetExportSessionStatusWaiting");
break;
case AVAssetExportSessionStatusExporting:
NSLog(@"AVAssetExportSessionStatusExporting");
break;
}
if (completeCallback)
completeCallback(mp3Path, finished);
}];
}
}
//general
RCT_EXPORT_METHOD(
generateFile: (NSString*) extension
resolver: (RCTPromiseResolveBlock) resolve
rejecter: (RCTPromiseRejectBlock) reject) {
@try {
NSString *outputUri =[ImageCompressor generateCacheFilePath:extension];
resolve(outputUri);
}
@catch (NSException *exception) {
reject(exception.name, exception.reason, nil);
}
}
//general
RCT_EXPORT_METHOD(
getFileSize: (NSString*) filePath
resolver: (RCTPromiseResolveBlock) resolve
rejecter: (RCTPromiseRejectBlock) reject) {
@try {
if([filePath containsString:@"file://"])
{
filePath=[filePath stringByReplacingOccurrencesOfString:@"file://"
withString:@""];
}
NSFileManager *fileManager = [NSFileManager defaultManager];
BOOL isDir;
if (![fileManager fileExistsAtPath:filePath isDirectory:&isDir] || isDir){
NSError *err = [NSError errorWithDomain:@"file not found" code:-15 userInfo:nil];
reject([NSString stringWithFormat: @"%lu", (long)err.code], err.localizedDescription, err);
return;
}
NSDictionary *attrs = [fileManager attributesOfItemAtPath: filePath error: NULL];
UInt32 fileSize = [attrs fileSize];
NSString *fileSizeString = [@(fileSize) stringValue];
resolve(fileSizeString);
}
@catch (NSException *exception) {
reject(exception.name, exception.reason, nil);
}
}
@end
@interface RCT_EXTERN_MODULE(VideoCompressor, RCTEventEmitter)
RCT_EXTERN_METHOD(compress:(NSString *)fileUrl
withOptions:(NSDictionary *)options
withResolver:(RCTPromiseResolveBlock)resolve
withRejecter:(RCTPromiseRejectBlock)reject)
RCT_EXTERN_METHOD(upload:(NSString *)fileUrl
withOptions:(NSDictionary *)options
withResolver:(RCTPromiseResolveBlock)resolve
withRejecter:(RCTPromiseRejectBlock)reject)
RCT_EXTERN_METHOD(activateBackgroundTask: (NSDictionary *)options
withResolver:(RCTPromiseResolveBlock)resolve
withRejecter:(RCTPromiseRejectBlock)reject)
RCT_EXTERN_METHOD(deactivateBackgroundTask: (NSDictionary *)options
withResolver:(RCTPromiseResolveBlock)resolve
withRejecter:(RCTPromiseRejectBlock)reject)
@end