1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151
extern crate libc; use std::ffi::CStr; use std::{ptr, mem, slice}; pub type ChromaprintContext = *mut ::libc::c_void; pub type ChromaprintAlgorithm = ::libc::c_int; pub const CHROMAPRINT_ALGORITHM_TEST1: ChromaprintAlgorithm = 0; pub const CHROMAPRINT_ALGORITHM_TEST2: ChromaprintAlgorithm = 1; pub const CHROMAPRINT_ALGORITHM_TEST3: ChromaprintAlgorithm = 2; pub const CHROMAPRINT_ALGORITHM_TEST4: ChromaprintAlgorithm = 3; pub const CHROMAPRINT_ALGORITHM_DEFAULT: ChromaprintAlgorithm = CHROMAPRINT_ALGORITHM_TEST2; #[link(name = "chromaprint")] extern "C" { pub fn chromaprint_get_version() -> *const ::libc::c_char; pub fn chromaprint_new(algorithm: ChromaprintAlgorithm) -> *mut ChromaprintContext; pub fn chromaprint_free(ctx: *mut ChromaprintContext) -> (); pub fn chromaprint_get_algorithm(ctx: *mut ChromaprintContext) -> ChromaprintAlgorithm; pub fn chromaprint_set_option(ctx: *mut ChromaprintContext, name: *const ::libc::c_char, value: ::libc::c_int) -> ::libc::c_int; pub fn chromaprint_start(ctx: *mut ChromaprintContext, sample_rate: ::libc::c_int, num_channels: ::libc::c_int) -> ::libc::c_int; pub fn chromaprint_feed(ctx: *mut ChromaprintContext, data: *const ::libc::c_void, size: ::libc::c_int) -> ::libc::c_int; pub fn chromaprint_finish(ctx: *mut ChromaprintContext) -> ::libc::c_int; pub fn chromaprint_get_fingerprint(ctx: *mut ChromaprintContext, fingerprint: *mut *mut ::libc::c_char) -> ::libc::c_int; pub fn chromaprint_get_raw_fingerprint(ctx: *mut ChromaprintContext, fingerprint: *mut *mut ::libc::c_void, size: *mut ::libc::c_int) -> ::libc::c_int; pub fn chromaprint_encode_fingerprint(fp: *const ::libc::c_void, size: ::libc::c_int, algorithm: ::libc::c_int, encoded_fp: *mut *mut ::libc::c_void, encoded_size: *mut ::libc::c_int, base64: ::libc::c_int) -> ::libc::c_int; pub fn chromaprint_decode_fingerprint(encoded_fp: *const ::libc::c_void, encoded_size: ::libc::c_int, fp: *mut *mut ::libc::c_void, size: *mut ::libc::c_int, algorithm: *mut ::libc::c_int, base64: ::libc::c_int) -> ::libc::c_int; pub fn chromaprint_dealloc(ptr: *mut ::libc::c_void) -> (); } pub struct Chromaprint { ctx: *mut ChromaprintContext, } impl Chromaprint { pub fn new() -> Chromaprint { unsafe { Chromaprint { ctx: chromaprint_new(CHROMAPRINT_ALGORITHM_DEFAULT), } } } pub fn version() -> String { String::from_utf8(unsafe { CStr::from_ptr(chromaprint_get_version()).to_bytes().to_vec() }).unwrap() } pub fn algorithm(&self) -> ChromaprintAlgorithm { unsafe { chromaprint_get_algorithm(self.ctx) } } pub fn start(&mut self, sample_rate: ::libc::c_int, num_channels: ::libc::c_int) -> bool { unsafe { chromaprint_start(self.ctx, sample_rate, num_channels) == 1 } } pub fn feed(&mut self, data: &[u8]) -> bool { unsafe { chromaprint_feed(self.ctx, data.as_ptr() as *const ::libc::c_void, data.len() as ::libc::c_int) == 1 } } pub fn finish(&mut self) -> bool { unsafe { chromaprint_finish(self.ctx) == 1 } } pub fn fingerprint(&mut self) -> Option<String> { let mut fingerprint: *mut ::libc::c_char = ptr::null_mut(); if unsafe { chromaprint_get_fingerprint(self.ctx, &mut fingerprint) } == 1 { let ret = String::from_utf8(unsafe { CStr::from_ptr(fingerprint) }.to_bytes().to_vec()).ok(); unsafe { chromaprint_dealloc(fingerprint as *mut ::libc::c_void) } return ret; } None } pub fn raw_fingerprint(&mut self) -> Option<Vec<::libc::c_int>> { let mut array: *mut ::libc::c_int = ptr::null_mut(); let mut size: ::libc::c_int = 0; if unsafe { chromaprint_get_raw_fingerprint(self.ctx, mem::transmute::<_, *mut *mut ::libc::c_void>(&mut array), &mut size) } == 1 { let fingerprint = unsafe { slice::from_raw_parts(array, size as usize).to_vec() }; unsafe { chromaprint_dealloc(array as *mut ::libc::c_void) } return Some(fingerprint); } None } pub fn encode(raw_fingerprint: &[::libc::c_int], algorithm: ChromaprintAlgorithm, base64: bool) -> Option<Vec<u8>> { let mut array: *mut u8 = ptr::null_mut(); let mut size: ::libc::c_int = 0; let result = unsafe { chromaprint_encode_fingerprint(raw_fingerprint.as_ptr() as *const ::libc::c_void, raw_fingerprint.len() as ::libc::c_int, algorithm, mem::transmute::<_, *mut *mut ::libc::c_void>(&mut array), &mut size, base64 as ::libc::c_int) }; if result == 1 { let encoded = unsafe { slice::from_raw_parts(array, size as usize).to_vec() }; unsafe { chromaprint_dealloc(array as *mut ::libc::c_void) } return Some(encoded); } None } pub fn decode(encoded_fingerprint: &[u8], base64: bool) -> Option<(Vec<::libc::c_int>, ChromaprintAlgorithm)> { let mut array: *mut ::libc::c_int = ptr::null_mut(); let mut size: ::libc::c_int = 0; let mut algorithm: ChromaprintAlgorithm = -1; let result = unsafe { chromaprint_decode_fingerprint(encoded_fingerprint.as_ptr() as *const ::libc::c_void, encoded_fingerprint.len() as ::libc::c_int, mem::transmute::<_, *mut *mut ::libc::c_void>(&mut array), &mut size, &mut algorithm, base64 as ::libc::c_int) }; if result == 1 { let decoded = unsafe { slice::from_raw_parts(array, size as usize).to_vec() }; unsafe { chromaprint_dealloc(array as *mut ::libc::c_void) } return Some((decoded, algorithm)); } None } } impl Drop for Chromaprint { fn drop(&mut self) { unsafe { chromaprint_free(self.ctx); } } }