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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <dlfcn.h>
#include <stdio.h>
void usage() {
printf("[USAGE] skia_launcher program_name [options]\n");
printf(" program_name: the skia program you want to launch (e.g. tests, bench)\n");
printf(" options: options specific to the program you are launching\n");
}
bool file_exists(const char* fileName) {
FILE* file = fopen(fileName, "r");
if (file) {
fclose(file);
return true;
}
return false;
}
int launch_app(int (*app_main)(int, const char**), int argc,
const char** argv) {
return (*app_main)(argc, argv);
}
void* load_library(const char* appLocation, const char* libraryName)
{
// attempt to lookup the location of the shared libraries
char libraryLocation[100];
sprintf(libraryLocation, "%s/lib%s.so", appLocation, libraryName);
if (!file_exists(libraryLocation)) {
printf("ERROR: Unable to find the '%s' library in the Skia App.\n", libraryName);
printf("ERROR: Did you provide the correct program_name?\n");
usage();
return NULL;
}
// load the appropriate library
void* appLibrary = dlopen(libraryLocation, RTLD_LOCAL | RTLD_LAZY);
if (!appLibrary) {
printf("ERROR: Unable to open the shared library.\n");
printf("ERROR: %s", dlerror());
return NULL;
}
return appLibrary;
}
int main(int argc, const char** argv) {
// check that the program name was specified
if (argc < 2) {
printf("ERROR: No program_name was specified\n");
usage();
return -1;
}
// attempt to lookup the location of the skia app
const char* appLocation = "/data/local/tmp";
if (!file_exists(appLocation)) {
printf("ERROR: Unable to find /data/local/tmp on the device.\n");
return -1;
}
void* skiaLibrary;
#if defined(SKIA_DLL)
// load the local skia shared library
skiaLibrary = load_library(appLocation, "skia_android");
if (NULL == skiaLibrary)
{
return -1;
}
#endif
// load the appropriate library
void* appLibrary = load_library(appLocation, argv[1]);
if (NULL == appLibrary) {
return -1;
}
#if !defined(SKIA_DLL)
skiaLibrary = appLibrary;
#endif
// find the address of the main function
int (*app_main)(int, const char**);
*(void **) (&app_main) = dlsym(appLibrary, "main");
if (!app_main) {
printf("ERROR: Unable to load the main function of the selected program.\n");
printf("ERROR: %s\n", dlerror());
return -1;
}
// find the address of the SkPrintToConsole function
void (*app_SkDebugToStdOut)(bool);
*(void **) (&app_SkDebugToStdOut) = dlsym(skiaLibrary, "AndroidSkDebugToStdOut");
if (app_SkDebugToStdOut) {
(*app_SkDebugToStdOut)(true);
} else {
printf("WARNING: Unable to redirect output to the console.\n");
printf("WARNING: %s\n", dlerror());
}
// pass all additional arguments to the main function
return launch_app(app_main, argc - 1, ++argv);
}
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