1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 /* this file is used to test that we can use libesd with lazy dynamic linking */ 17 18 #include <esd.h> 19 #include <dlfcn.h> 20 #include <stdio.h> 21 22 #define D(...) fprintf(stderr,__VA_ARGS__) 23 #define STRINGIFY(x) _STRINGIFY(x) 24 #define _STRINGIFY(x) #x 25 26 #define ESD_SYMBOLS \ 27 ESD_FUNCTION(int,esd_play_stream,(esd_format_t,int,const char*,const char*)) \ 28 ESD_FUNCTION(int,esd_record_stream,(esd_format_t,int,const char*,const char*)) \ 29 ESD_FUNCTION(int,esd_open_sound,( const char *host )) \ 30 ESD_FUNCTION(int,esd_close,(int)) \ 31 32 /* define pointers to library functions we're going to use */ 33 #define ESD_FUNCTION(ret,name,sig) \ 34 static ret (*func_ ## name)sig; 35 36 ESD_SYMBOLS 37 38 #undef ESD_FUNCTION 39 static void* esd_lib; 40 41 int main( void ) 42 { 43 int fd; 44 45 esd_lib = dlopen( "libesd.so", RTLD_NOW ); 46 if (esd_lib == NULL) 47 esd_lib = dlopen( "libesd.so.0", RTLD_NOW ); 48 49 if (esd_lib == NULL) { 50 D("could not find libesd on this system\n"); 51 return 1; 52 } 53 54 #undef ESD_FUNCTION 55 #define ESD_FUNCTION(ret,name,sig) \ 56 do { \ 57 (func_ ##name) = dlsym( esd_lib, STRINGIFY(name) ); \ 58 if ((func_##name) == NULL) { \ 59 D("could not find %s in libesd\n", STRINGIFY(name)); \ 60 return 1; \ 61 } \ 62 } while (0); 63 64 ESD_SYMBOLS 65 66 return 0; 67 } 68
