117 lines
2.6 KiB
Plaintext
117 lines
2.6 KiB
Plaintext
//
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// fileprovider.cpp
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// AdPlug
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//
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// Created by Christopher Snowhill on 1/27/18.
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// Copyright © 2018-2023 Christopher Snowhill. All rights reserved.
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//
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#include "fileprovider.h"
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class binistream_cog : public binistream {
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id<CogSource> m_file;
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Byte m_buffer[4096];
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int m_buffer_filled, m_buffer_position;
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public:
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binistream_cog(id<CogSource> p_file)
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: m_file(p_file), m_buffer_filled(0), m_buffer_position(0) {
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}
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void seek(long pos, Offset offs) {
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switch(offs) {
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case Set:
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break;
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case Add:
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if((pos < 0 && m_buffer_position + pos >= 0) ||
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(pos >= 0 && m_buffer_position + pos < m_buffer_filled + m_buffer_position)) {
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m_buffer_filled -= pos;
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m_buffer_position += pos;
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err &= ~Eof;
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return;
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} else
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pos += [m_file tell] - m_buffer_filled;
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break;
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case End:
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[m_file seek:0 whence:SEEK_END];
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pos += [m_file tell];
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break;
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}
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[m_file seek:0 whence:SEEK_END];
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if(pos < [m_file tell]) {
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err &= ~Eof;
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[m_file seek:pos whence:SEEK_SET];
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}
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m_buffer_filled = 0;
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m_buffer_position = 0;
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}
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long pos() {
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return [m_file tell] - m_buffer_filled;
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}
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Byte getByte() {
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if(err & Eof) return -1;
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if(!m_buffer_filled) {
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m_buffer_filled = (int)[m_file read:m_buffer amount:4096];
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if(!m_buffer_filled) {
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err |= Eof;
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return -1;
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}
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m_buffer_position = 0;
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}
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Byte value = m_buffer[m_buffer_position];
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++m_buffer_position;
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--m_buffer_filled;
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return value;
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}
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};
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binistream *CProvider_cog::open(std::string filename) const {
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id<CogSource> p_file;
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if(filename == m_file_path) {
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p_file = m_file_hint;
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[p_file seek:0 whence:SEEK_SET];
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}
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if(p_file == nil) {
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NSString *urlString = [NSString stringWithUTF8String:filename.c_str()];
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NSString *fragmentString = @"";
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NSRange fragmentRange = [urlString rangeOfString:@"#" options:NSBackwardsSearch];
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if(fragmentRange.location != NSNotFound) {
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fragmentString = [urlString substringFromIndex:fragmentRange.location];
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urlString = [urlString substringToIndex:fragmentRange.location];
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}
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NSURL *url = [NSURL URLWithString:[[urlString stringByAddingPercentEncodingWithAllowedCharacters:NSCharacterSet.URLFragmentAllowedCharacterSet] stringByAppendingString:fragmentString]];
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id audioSourceClass = NSClassFromString(@"AudioSource");
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p_file = [audioSourceClass audioSourceForURL:url];
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if(![p_file open:url])
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return 0;
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}
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binistream_cog *f = new binistream_cog(p_file);
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if(f->error()) {
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delete f;
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return 0;
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}
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f->setFlag(binio::BigEndian, false);
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f->setFlag(binio::FloatIEEE);
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return f;
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}
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void CProvider_cog::close(binistream *f) const {
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binistream_cog *ff = (binistream_cog *)f;
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if(f)
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delete ff;
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}
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