fix typo, add ne enum val, fix checking speed

Author: snowfluke

avif-coder/src/main/cpp/JniEncoder.cpp

@@ -114,7 +114,7 @@ jbyteArray encodeBitmap(JNIEnv *env, jobject thiz,
         throwException(env, str);
         return static_cast<jbyteArray>(nullptr);
       }
-      if(speed > 0 && speed < 10){
+      if(speed > -1 && speed <= 10){
         result = heif_encoder_set_parameter_string(encoder.get(), "speed", speed)
         if (result.code != heif_error_Ok) {
           std::string choke(result.message);

avif-coder/src/main/java/com/radzivon/bartoshyk/avif/coder/AvifSpeed.kt

@@ -30,7 +30,7 @@ package com.radzivon.bartoshyk.avif.coder
 
 /**
  * Enum representing speed values from 0 to 10 (slowest-fastest).
- * Default iis 6.
+ * Default is 6.
  * https://github.com/AOMediaCodec/libavif/blob/main/doc/avifenc.1.md
  */
 enum class AvifSpeed(internal val value: Int) {
@@ -45,4 +45,7 @@ enum class AvifSpeed(internal val value: Int) {
     EIGHT(8), // Speed 8
     NINE(9),  // Speed 9
     TEN(10)   // Speed 10
+
+    // Not using speed parameter, fallback to use x265 instead of aom
+    USE_X265(-1)
 }