2020-02-22 15:38:54 +04:00

384 lines
9.8 KiB
Objective-C
Executable File

/**********************************************************************************
AudioPlayer.m
Created by Thong Nguyen on 14/05/2012.
https://github.com/tumtumtum/audjustable
Copyright (c) 2012 Thong Nguyen (tumtumtum@gmail.com). All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by Thong Nguyen (tumtumtum@gmail.com)
4. Neither the name of Thong Nguyen nor the
names of its contributors may be used to endorse or promote products
derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY Thong Nguyen ''AS IS'' AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THONG NGUYEN BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**********************************************************************************/
#import "STKHTTPDataSource.h"
#import "STKLocalFileDataSource.h"
@interface STKHTTPDataSource()
{
@private
UInt32 httpStatusCode;
SInt64 seekStart;
SInt64 relativePosition;
SInt64 fileLength;
int discontinuous;
int requestSerialNumber;
NSURL* currentUrl;
STKAsyncURLProvider asyncUrlProvider;
NSDictionary* httpHeaders;
AudioFileTypeID audioFileTypeHint;
}
-(void) open;
@end
@implementation STKHTTPDataSource
-(id) initWithURL:(NSURL*)urlIn
{
return [self initWithURLProvider:^NSURL* { return urlIn; }];
}
-(id) initWithURLProvider:(STKURLProvider)urlProviderIn
{
urlProviderIn = [urlProviderIn copy];
return [self initWithAsyncURLProvider:^(STKHTTPDataSource* dataSource, BOOL forSeek, STKURLBlock block)
{
block(urlProviderIn());
}];
}
-(id) initWithAsyncURLProvider:(STKAsyncURLProvider)asyncUrlProviderIn
{
if (self = [super init])
{
seekStart = 0;
relativePosition = 0;
fileLength = -1;
self->asyncUrlProvider = [asyncUrlProviderIn copy];
audioFileTypeHint = [STKLocalFileDataSource audioFileTypeHintFromFileExtension:self->currentUrl.pathExtension];
}
return self;
}
-(void) dealloc
{
NSLog(@"STKHTTPDataSource dealloc");
}
-(NSURL*) url
{
return self->currentUrl;
}
+(AudioFileTypeID) audioFileTypeHintFromMimeType:(NSString*)mimeType
{
static dispatch_once_t onceToken;
static NSDictionary* fileTypesByMimeType;
dispatch_once(&onceToken, ^
{
fileTypesByMimeType =
@{
@"audio/mp3": @(kAudioFileMP3Type),
@"audio/mpg": @(kAudioFileMP3Type),
@"audio/mpeg": @(kAudioFileMP3Type),
@"audio/wav": @(kAudioFileWAVEType),
@"audio/aifc": @(kAudioFileAIFCType),
@"audio/aiff": @(kAudioFileAIFFType),
@"audio/x-m4a": @(kAudioFileM4AType),
@"audio/x-mp4": @(kAudioFileMPEG4Type),
@"audio/aacp": @(kAudioFileAAC_ADTSType),
@"audio/m4a": @(kAudioFileM4AType),
@"audio/mp4": @(kAudioFileMPEG4Type),
@"audio/caf": @(kAudioFileCAFType),
@"audio/aac": @(kAudioFileAAC_ADTSType),
@"audio/ac3": @(kAudioFileAC3Type),
@"audio/3gp": @(kAudioFile3GPType)
};
});
NSNumber* number = [fileTypesByMimeType objectForKey:mimeType];
if (!number)
{
return 0;
}
return (AudioFileTypeID)number.intValue;
}
-(AudioFileTypeID) audioFileTypeHint
{
return audioFileTypeHint;
}
-(void) dataAvailable
{
if (stream == NULL) {
return;
}
if (self.httpStatusCode == 0)
{
CFTypeRef response = CFReadStreamCopyProperty(stream, kCFStreamPropertyHTTPResponseHeader);
if (response)
{
httpHeaders = (__bridge_transfer NSDictionary*)CFHTTPMessageCopyAllHeaderFields((CFHTTPMessageRef)response);
self->httpStatusCode = (UInt32)CFHTTPMessageGetResponseStatusCode((CFHTTPMessageRef)response);
CFRelease(response);
}
if (self.httpStatusCode == 200)
{
if (seekStart == 0)
{
fileLength = (SInt64)[[httpHeaders objectForKey:@"Content-Length"] longLongValue];
}
NSString* contentType = [httpHeaders objectForKey:@"Content-Type"];
AudioFileTypeID typeIdFromMimeType = [STKHTTPDataSource audioFileTypeHintFromMimeType:contentType];
if (typeIdFromMimeType != 0)
{
audioFileTypeHint = typeIdFromMimeType;
}
}
else if (self.httpStatusCode == 206)
{
NSString* contentRange = [httpHeaders objectForKey:@"Content-Range"];
NSArray* components = [contentRange componentsSeparatedByString:@"/"];
if (components.count == 2)
{
fileLength = [[components objectAtIndex:1] integerValue];
}
}
else if (self.httpStatusCode == 416)
{
if (self.length >= 0)
{
seekStart = self.length;
}
[self eof];
return;
}
else if (self.httpStatusCode >= 300)
{
[self errorOccured];
return;
}
}
[super dataAvailable];
}
-(SInt64) position
{
return seekStart + relativePosition;
}
-(SInt64) length
{
return fileLength >= 0 ? fileLength : 0;
}
-(void) reconnect
{
NSRunLoop* savedEventsRunLoop = eventsRunLoop;
[self close];
eventsRunLoop = savedEventsRunLoop;
[self seekToOffset:self.position];
}
-(void) seekToOffset:(SInt64)offset
{
NSRunLoop* savedEventsRunLoop = eventsRunLoop;
[self close];
eventsRunLoop = savedEventsRunLoop;
NSAssert([NSRunLoop currentRunLoop] == eventsRunLoop, @"Seek called on wrong thread");
stream = 0;
relativePosition = 0;
seekStart = offset;
self->isInErrorState = NO;
[self openForSeek:YES];
}
-(int) readIntoBuffer:(UInt8*)buffer withSize:(int)size
{
if (size == 0)
{
return 0;
}
int read = (int)CFReadStreamRead(stream, buffer, size);
if (read < 0)
{
return read;
}
relativePosition += read;
return read;
}
-(void) open
{
return [self openForSeek:NO];
}
-(void) openForSeek:(BOOL)forSeek
{
int localRequestSerialNumber;
requestSerialNumber++;
localRequestSerialNumber = requestSerialNumber;
asyncUrlProvider(self, forSeek, ^(NSURL* url)
{
if (localRequestSerialNumber != self->requestSerialNumber)
{
return;
}
self->currentUrl = url;
if (url == nil)
{
return;
}
CFHTTPMessageRef message = CFHTTPMessageCreateRequest(NULL, (CFStringRef)@"GET", (__bridge CFURLRef)self->currentUrl, kCFHTTPVersion1_1);
if (seekStart > 0)
{
CFHTTPMessageSetHeaderFieldValue(message, CFSTR("Range"), (__bridge CFStringRef)[NSString stringWithFormat:@"bytes=%lld-", seekStart]);
discontinuous = YES;
}
stream = CFReadStreamCreateForHTTPRequest(NULL, message);
if (stream == nil)
{
CFRelease(message);
[self errorOccured];
return;
}
if (!CFReadStreamSetProperty(stream, kCFStreamPropertyHTTPShouldAutoredirect, kCFBooleanTrue))
{
CFRelease(message);
[self errorOccured];
return;
}
// Proxy support
CFDictionaryRef proxySettings = CFNetworkCopySystemProxySettings();
CFReadStreamSetProperty(stream, kCFStreamPropertyHTTPProxy, proxySettings);
CFRelease(proxySettings);
// SSL support
if ([self->currentUrl.scheme caseInsensitiveCompare:@"https"] == NSOrderedSame)
{
NSDictionary* sslSettings = [NSDictionary dictionaryWithObjectsAndKeys:
(NSString*)kCFStreamSocketSecurityLevelNegotiatedSSL, kCFStreamSSLLevel,
[NSNumber numberWithBool:YES], kCFStreamSSLAllowsExpiredCertificates,
[NSNumber numberWithBool:YES], kCFStreamSSLAllowsExpiredRoots,
[NSNumber numberWithBool:YES], kCFStreamSSLAllowsAnyRoot,
[NSNumber numberWithBool:NO], kCFStreamSSLValidatesCertificateChain,
[NSNull null], kCFStreamSSLPeerName,
nil];
CFReadStreamSetProperty(stream, kCFStreamPropertySSLSettings, (__bridge CFTypeRef)sslSettings);
}
[self reregisterForEvents];
self->httpStatusCode = 0;
// Open
if (!CFReadStreamOpen(stream))
{
CFRelease(stream);
CFRelease(message);
stream = 0;
[self errorOccured];
return;
}
self->isInErrorState = NO;
CFRelease(message);
});
}
-(UInt32) httpStatusCode
{
return self->httpStatusCode;
}
-(NSRunLoop*) eventsRunLoop
{
return self->eventsRunLoop;
}
-(NSString*) description
{
return [NSString stringWithFormat:@"HTTP data source with file length: %lld and position: %lld", self.length, self.position];
}
@end