Add video decoder using OpenMax LI on Raspberry Pi

jni/nv_omx_dec/nv_omx_dec_jni.c

@@ -0,0 +1,47 @@
+#include "nv_omx_dec.h"
+
+#include <stdlib.h>
+#include <jni.h>
+
+// This function must be called before
+// any other decoding functions
+JNIEXPORT jint JNICALL
+Java_com_limelight_binding_video_OmxDecoder_init(JNIEnv *env, jobject this)
+{
+	return nv_omx_init();
+}
+
+// This function must be called after
+// decoding is finished
+JNIEXPORT void JNICALL
+Java_com_limelight_binding_video_OmxDecoder_stop(JNIEnv *env, jobject this) {
+	nv_omx_stop();
+}
+
+// This function must be called after
+// decoding is finished
+JNIEXPORT void JNICALL
+Java_com_limelight_binding_video_OmxDecoder_destroy(JNIEnv *env, jobject this) {
+	nv_omx_destroy();
+}
+
+// packets must be decoded in order
+// the input buffer must have proper padding
+// returns 0 on success, < 0 on error
+JNIEXPORT jint JNICALL
+Java_com_limelight_binding_video_OmxDecoder_decode(
+	JNIEnv *env, jobject this, // JNI parameters
+	jbyteArray indata, jint inoff, jint inlen, jboolean last)
+{
+	jint ret;
+	jbyte* jni_input_data;
+
+	jni_input_data = (*env)->GetByteArrayElements(env, indata, 0);
+
+	ret = nv_omx_decode(&jni_input_data[inoff], inlen, last);
+
+	// The input data isn't changed so it can be safely aborted
+	(*env)->ReleaseByteArrayElements(env, indata, jni_input_data, JNI_ABORT);
+
+	return ret;
+}