Introduce a small api for loading code (codecs,plugins) from disk/memory.

It's a used by codec/plugin loading and vastly reduces code duplication. It's also a step forward in getting rid of libuisimulator in the application ports.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27900 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 13 insertions, 100 deletions

diff --git a/uisimulator/common/io.c b/uisimulator/common/io.c
index 4c0fa33be5..c8d6a8a67d 100644
--- a/uisimulator/common/io.c
+++ b/uisimulator/common/io.c
@@ -58,6 +58,7 @@
 #include "debug.h"
 #include "ata.h" /* for IF_MV2 et al. */
 #include "rbpaths.h"
+#include "load_code.h"
 
 /* keep this in sync with file.h! */
 #undef MAX_PATH /* this avoids problems when building simulator */
@@ -530,116 +531,28 @@ int sim_fsync(int fd)
 #include <dlfcn.h>
 #endif
 
-void *sim_codec_load_ram(char* codecptr, int size, void **pd)
-{
-    void *hdr;
-    char path[MAX_PATH];
-    int fd;
-    int codec_count;
-#ifdef WIN32
-    char buf[MAX_PATH];
-#endif
 
-    *pd = NULL;
-
-    /* We have to create the dynamic link library file from ram so we
-       can simulate the codec loading. With voice and crossfade,
-       multiple codecs may be loaded at the same time, so we need
-       to find an unused filename */
-    for (codec_count = 0; codec_count < 10; codec_count++)
-    {
-#if (CONFIG_PLATFORM & PLATFORM_ANDROID)
-        /* we need that path fixed, since get_user_file_path()
-         * gives us the folder on the sdcard where we cannot load libraries
-         * from (no exec permissions)
-         */
-        snprintf(path, sizeof(path),
-                 "/data/data/org.rockbox/app_rockbox/libtemp_codec_%d.so",
-                 codec_count);
-#else
-        char name[MAX_PATH];
-        const char *_name = get_user_file_path(ROCKBOX_DIR, 0, name, sizeof(name));
-        snprintf(path, sizeof(path), "%s/_temp_codec%d.dll", get_sim_pathname(_name), codec_count);
-#endif
-        fd = OPEN(path, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, S_IRWXU);
-        if (fd >= 0)
-            break;  /* Created a file ok */
-    }
-    if (fd < 0)
-    {
-        DEBUGF("failed to open for write: %s\n", path);
-        return NULL;
-    }
-
-    if (write(fd, codecptr, size) != size)
-    {
-        DEBUGF("write failed");
-        return NULL;
-    }
-    close(fd);
+void *lc_open(const char *filename, char *buf, size_t buf_size)
+{
+    const char *sim_path = get_sim_pathname(filename);
+    void *handle = _lc_open((const char*)UTF8_TO_OS(sim_path), buf, buf_size);
 
-    /* Now load the library. */
-    *pd = dlopen(path, RTLD_NOW);
-    if (*pd == NULL) 
+    if (handle == NULL)
     {
-        DEBUGF("failed to load %s\n", path);
-#ifdef WIN32
-        FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0,
-                       buf, sizeof buf, NULL);
-        DEBUGF("dlopen(%s): %s\n", path, buf);
-#else
-        DEBUGF("dlopen(%s): %s\n", path, dlerror());
-#endif
-        return NULL;
+        DEBUGF("failed to load %s\n", filename);
+        DEBUGF("lc_open(%s): %s\n", filename, lc_last_error());
     }
-
-    hdr = dlsym(*pd, "__header");
-    if (!hdr)
-        hdr = dlsym(*pd, "___header");
-
-    return hdr;       /* maybe NULL if symbol not present */
-}
-
-void sim_codec_close(void *pd)
-{
-    dlclose(pd);
+    return handle;
 }
 
-void *sim_plugin_load(char *plugin, void **pd)
+void *lc_get_header(void *handle)
 {
-    void *hdr;
-    char path[MAX_PATH];
-#ifdef WIN32
-    char buf[MAX_PATH];
-#endif
-
-    snprintf(path, sizeof(path), "%s", get_sim_pathname(plugin));
-
-    *pd = NULL;
-
-    *pd = dlopen(path, RTLD_NOW);
-    if (*pd == NULL) {
-        DEBUGF("failed to load %s\n", plugin);
-#ifdef WIN32
-        FormatMessageA(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0,
-                       buf, sizeof(buf), NULL);
-        DEBUGF("dlopen(%s): %s\n", path, buf);
-#else
-        DEBUGF("dlopen(%s): %s\n", path, dlerror());
-#endif
-        return NULL;
-    }
-
-    hdr = dlsym(*pd, "__header");
-    if (!hdr)
-        hdr = dlsym(*pd, "___header");
-
-    return hdr;    /* maybe NULL if symbol not present */
+    return _lc_get_header(handle);
 }
 
-void sim_plugin_close(void *pd)
+void lc_close(void *handle)
 {
-    dlclose(pd);
+    _lc_close(handle);
 }
 
 #ifdef WIN32