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-rw-r--r--source/thirdparty/android.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/source/thirdparty/android.c b/source/thirdparty/android.c
new file mode 100644
index 0000000..15d1e60
--- /dev/null
+++ b/source/thirdparty/android.c
@@ -0,0 +1,68 @@
+// See: http://www.50ply.com/blog/2013/01/19/loading-compressed-android-assets-with-file-pointer/
+// See: https://github.com/android/ndk/issues/562
+
+#include "android.h"
+#include "nanovg.h"
+
+#if defined(__ANDROID__)
+
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <android/log.h>
+#include <android/asset_manager.h>
+
+#define LOGV(...) (__android_log_print(ANDROID_LOG_VERBOSE, "NanoVG Demo", __VA_ARGS__))
+#define LOGI(...) (__android_log_print(ANDROID_LOG_INFO, "NanoVG Demo", __VA_ARGS__))
+#define LOGW(...) (__android_log_print(ANDROID_LOG_WARN, "NanoVG Demo", __VA_ARGS__))
+#define LOGE(...) (__android_log_print(ANDROID_LOG_ERROR, "NanoVG Demo", __VA_ARGS__))
+#define LOGF(...) (__android_log_print(ANDROID_LOG_FATAL, "NanoVG Demo", __VA_ARGS__))
+
+static int android_read(void * cookie, char * buf, int size) {
+ return AAsset_read((AAsset*)cookie, buf, size);
+}
+
+static int android_write(void * cookie, const char * buf, int size) {
+ (void)cookie; (void)buf; (void)size; // unused
+ return EACCES; // can't provide write access to the apk
+}
+
+static fpos_t android_seek(void * cookie, fpos_t offset, int whence) {
+ return AAsset_seek((AAsset*)cookie, offset, whence);
+}
+
+static int android_close(void * cookie) {
+ AAsset_close((AAsset*)cookie);
+ return 0;
+}
+
+AAssetManager * android_asset_manager = NULL;
+void nvgSetAndroidAssetManager(AAssetManager * manager) {
+ android_asset_manager = manager;
+}
+
+FILE * android_fopen(const char * fname, const char * mode) {
+ if (mode[0] == '/') { // absolute path
+ }
+
+ if (strchr(mode, 'w')) { // for writing
+ LOGE("Unable to open asset (trying to write): '%s' ('%s')", fname, mode);
+ return NULL;
+ }
+
+ if (!android_asset_manager) {
+ LOGE("Unable to open asset (unknown asset manager): '%s' ('%s')", fname, mode);
+ return NULL;
+ }
+
+ AAsset* asset = AAssetManager_open(android_asset_manager, fname, 0);
+ if (!asset) {
+ LOGW("Unable to open asset: '%s' ('%s')", fname, mode);
+ return NULL;
+ }
+
+ LOGV("Opening asset: '%s' ('%s')", fname, mode);
+ return funopen(asset, android_read, android_write, android_seek, android_close);
+}
+
+#endif