/* * Copyright (C) 2008 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* this file is used to test that we can use libesd with lazy dynamic linking */ #include #include #include #define D(...) fprintf(stderr,__VA_ARGS__) #define STRINGIFY(x) _STRINGIFY(x) #define _STRINGIFY(x) #x #define ESD_SYMBOLS \ ESD_FUNCTION(int,esd_play_stream,(esd_format_t,int,const char*,const char*)) \ ESD_FUNCTION(int,esd_record_stream,(esd_format_t,int,const char*,const char*)) \ ESD_FUNCTION(int,esd_open_sound,( const char *host )) \ ESD_FUNCTION(int,esd_close,(int)) \ /* define pointers to library functions we're going to use */ #define ESD_FUNCTION(ret,name,sig) \ static ret (*func_ ## name)sig; ESD_SYMBOLS #undef ESD_FUNCTION static void* esd_lib; int main( void ) { int fd; esd_lib = dlopen( "libesd.so", RTLD_NOW ); if (esd_lib == NULL) esd_lib = dlopen( "libesd.so.0", RTLD_NOW ); if (esd_lib == NULL) { D("could not find libesd on this system"); return 1; } #undef ESD_FUNCTION #define ESD_FUNCTION(ret,name,sig) \ do { \ (func_ ##name) = dlsym( esd_lib, STRINGIFY(name) ); \ if ((func_##name) == NULL) { \ D("could not find %s in libesd\n", STRINGIFY(name)); \ return 1; \ } \ } while (0); ESD_SYMBOLS return 0; }