bool create_preload_list(void)
{
ComponentHandlePtr component_handle;
int index;
bool ret = true;
for (index=0;omx_components[index][0];index++) {
struct list *entry;
component_handle = (ComponentHandlePtr) malloc(sizeof(ComponentHandle));
strncpy(component_handle->comp_name, omx_components[index][0], OMX_MAX_STRINGNAME_SIZE);
component_handle->comp_handle = NULL;
component_handle->parser_handle = NULL;
/* skip libraries starting with # */
if (component_handle->comp_name[0] == '#')
continue;
entry = list_alloc(component_handle);
if (!entry) {
ret=false;
goto unload_comphandle;
}
preload_list = __list_add_tail(preload_list, entry);
omx_infoLog("Added component %s to list", component_handle->comp_name);
continue;
unload_comphandle:
dlclose(component_handle->comp_handle);
}
return ret;
}
static struct list *construct_components(void)
{
struct list *head = NULL, *preload_entry;
ComponentHandlePtr component_handle;
/* In Chromium OS, the OMX IL Client will call preload_components()
* so that the preload_list is already populated. In non-chrome case,
* we need to create the list here */
if (!preload_list) {
if (!create_preload_list()) {
omx_verboseLog("error: Preload list cannot be populated");
}
}
list_foreach(preload_list, preload_entry) {
CModule *cmodule;
struct list *entry;
OMX_ERRORTYPE ret;
component_handle = (ComponentHandlePtr) preload_entry->data;
/* skip libraries starting with # */
if (component_handle->comp_name[0] == '#')
continue;
cmodule = new CModule(component_handle->comp_name);
if (!cmodule)
continue;
omx_verboseLog("found component library %s", component_handle->comp_name);
ret = cmodule->Load(MODULE_NOW, component_handle->comp_handle);
if (ret != OMX_ErrorNone)
goto delete_cmodule;
ret = cmodule->SetParser(component_handle->parser_handle);
if (ret != OMX_ErrorNone)
goto delete_cmodule;
ret = cmodule->QueryComponentNameAndRoles();
if (ret != OMX_ErrorNone)
goto unload_cmodule;
entry = list_alloc(cmodule);
if (!entry)
goto unload_cmodule;
head = __list_add_tail(head, entry);
omx_verboseLog("module %s:%s added to component list",
cmodule->GetLibraryName(), cmodule->GetComponentName());
continue;
unload_cmodule:
cmodule->Unload();
delete_cmodule:
delete cmodule;
}
extern "C" bool preload_components(void)
{
/* this function is called by openMAX-IL client when libraries are to be
* loaded at initial stages. Security features of the operating system require
* to load libraries upfront */
ComponentHandlePtr component_handle;
int index;
bool ret = true;
for (index=0;omx_components[index][0];index++) {
struct list *entry;
component_handle = (ComponentHandlePtr) malloc(sizeof(ComponentHandle));
strncpy(component_handle->comp_name, omx_components[index][0], OMX_MAX_STRINGNAME_SIZE);
/* parser is not always needed */
if (omx_components[index][1])
strncpy(component_handle->parser_name, omx_components[index][1], OMX_MAX_STRINGNAME_SIZE);
/* skip libraries starting with # */
if (component_handle->comp_name[0] == '#')
continue;
component_handle->comp_handle = dlopen(component_handle->comp_name, RTLD_NOW);
if (!component_handle->comp_handle) {
ret=false;
goto delete_comphandle;
}
if (component_handle->parser_name) {
/* some components don't need a parser */
component_handle->parser_handle = dlopen(component_handle->parser_name, RTLD_NOW);
if (!component_handle->parser_handle) {
ret=false;
goto delete_comphandle;
}
}
entry = list_alloc(component_handle);
if (!entry) {
ret=false;
goto unload_comphandle;
}
preload_list = __list_add_tail(preload_list, entry);
omx_infoLog("open component %s and parser %s", component_handle->comp_name,
component_handle->parser_name == NULL ?
"No parser provided":component_handle->parser_name );
continue;
unload_comphandle:
dlclose(component_handle->comp_handle);
delete_comphandle:
free(component_handle);
}
return ret;
}
int queue_push_tail(struct queue *queue, void *data)
{
struct list *entry = list_alloc(data);
if (!entry)
return -1;
else
queue->tail = __list_add_tail(queue->tail, entry);
if (queue->tail->next)
queue->tail = queue->tail->next;
else
queue->head = queue->tail;
queue->length++;
return 0;
}
static struct list *construct_components(const char *config_file_name)
{
FILE *config_file;
char library_name[OMX_MAX_STRINGNAME_SIZE];
char config_file_path[256];
struct list *head = NULL;
strncpy(config_file_path, "/etc/", 256);
strncat(config_file_path, config_file_name, 256);
config_file = fopen(config_file_path, "r");
if (!config_file) {
strncpy(config_file_path, "./", 256);
strncat(config_file_path, config_file_name, 256);
config_file = fopen(config_file_path, "r");
if (!config_file) {
ALOGE("not found file %s\n", config_file_name);
return NULL;
}
}
while (fscanf(config_file, "%s", library_name) > 0) {
CModule *cmodule;
struct list *entry;
OMX_ERRORTYPE ret;
library_name[OMX_MAX_STRINGNAME_SIZE-1] = '\0';
/* skip libraries starting with # */
if (library_name[0] == '#')
continue;
cmodule = new CModule(&library_name[0]);
if (!cmodule)
continue;
ALOGI("found component library %s\n", library_name);
ret = cmodule->Load(MODULE_LAZY);
if (ret != OMX_ErrorNone)
goto delete_cmodule;
ret = cmodule->QueryComponentNameAndRoles();
if (ret != OMX_ErrorNone)
goto unload_cmodule;
entry = list_alloc(cmodule);
if (!entry)
goto unload_cmodule;
head = __list_add_tail(head, entry);
cmodule->Unload();
ALOGI("module %s:%s added to component list\n",
cmodule->GetLibraryName(), cmodule->GetComponentName());
continue;
unload_cmodule:
cmodule->Unload();
delete_cmodule:
delete cmodule;
}
fclose(config_file);
return head;
}
