[FFmpeg-devel] [PATCH 4/7] avcodec/mediacodec_wrapper: load and use MediaFormat.constainsKey()

[Matthieu Bouron]

Avoids triggering an exception in MediaFormat getter functions if the
key does not exists.
---
 libavcodec/mediacodec_wrapper.c | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/libavcodec/mediacodec_wrapper.c b/libavcodec/mediacodec_wrapper.c
index dbc37bf463..9436b3c994 100644
--- a/libavcodec/mediacodec_wrapper.c
+++ b/libavcodec/mediacodec_wrapper.c
@@ -111,6 +111,8 @@ struct JNIAMediaFormatFields {
 
     jmethodID init_id;
 
+    jmethodID contains_key_id;
+
     jmethodID get_integer_id;
     jmethodID get_long_id;
     jmethodID get_float_id;
@@ -132,6 +134,8 @@ static const struct FFJniField jni_amediaformat_mapping[] = {
 
         { "android/media/MediaFormat", "<init>", "()V", FF_JNI_METHOD, offsetof(struct JNIAMediaFormatFields, init_id), 1 },
 
+        { "android/media/MediaFormat", "containsKey", "(Ljava/lang/String;)Z", FF_JNI_METHOD,offsetof(struct JNIAMediaFormatFields, contains_key_id), 1 },
+
         { "android/media/MediaFormat", "getInteger", "(Ljava/lang/String;)I", FF_JNI_METHOD, offsetof(struct JNIAMediaFormatFields, get_integer_id), 1 },
         { "android/media/MediaFormat", "getLong", "(Ljava/lang/String;)J", FF_JNI_METHOD, offsetof(struct JNIAMediaFormatFields, get_long_id), 1 },
         { "android/media/MediaFormat", "getFloat", "(Ljava/lang/String;)F", FF_JNI_METHOD, offsetof(struct JNIAMediaFormatFields, get_float_id), 1 },
@@ -738,6 +742,7 @@ int ff_AMediaFormat_getInt32(FFAMediaFormat* format, const char *name, int32_t *
 
     JNIEnv *env = NULL;
     jstring key = NULL;
+    jboolean contains_key;
 
     av_assert0(format != NULL);
 
@@ -749,6 +754,12 @@ int ff_AMediaFormat_getInt32(FFAMediaFormat* format, const char *name, int32_t *
         goto fail;
     }
 
+    contains_key = (*env)->CallBooleanMethod(env, format->object, format->jfields.contains_key_id, key);
+    if (!contains_key || (ret = ff_jni_exception_check(env, 1, format)) < 0) {
+        ret = 0;
+        goto fail;
+    }
+
     *out = (*env)->CallIntMethod(env, format->object, format->jfields.get_integer_id, key);
     if ((ret = ff_jni_exception_check(env, 1, format)) < 0) {
         ret = 0;
@@ -770,6 +781,7 @@ int ff_AMediaFormat_getInt64(FFAMediaFormat* format, const char *name, int64_t *
 
     JNIEnv *env = NULL;
     jstring key = NULL;
+    jboolean contains_key;
 
     av_assert0(format != NULL);
 
@@ -781,6 +793,12 @@ int ff_AMediaFormat_getInt64(FFAMediaFormat* format, const char *name, int64_t *
         goto fail;
     }
 
+    contains_key = (*env)->CallBooleanMethod(env, format->object, format->jfields.contains_key_id, key);
+    if (!contains_key || (ret = ff_jni_exception_check(env, 1, format)) < 0) {
+        ret = 0;
+        goto fail;
+    }
+
     *out = (*env)->CallLongMethod(env, format->object, format->jfields.get_long_id, key);
     if ((ret = ff_jni_exception_check(env, 1, format)) < 0) {
         ret = 0;
@@ -802,6 +820,7 @@ int ff_AMediaFormat_getFloat(FFAMediaFormat* format, const char *name, float *ou
 
     JNIEnv *env = NULL;
     jstring key = NULL;
+    jboolean contains_key;
 
     av_assert0(format != NULL);
 
@@ -813,6 +832,12 @@ int ff_AMediaFormat_getFloat(FFAMediaFormat* format, const char *name, float *ou
         goto fail;
     }
 
+    contains_key = (*env)->CallBooleanMethod(env, format->object, format->jfields.contains_key_id, key);
+    if (!contains_key || (ret = ff_jni_exception_check(env, 1, format)) < 0) {
+        ret = 0;
+        goto fail;
+    }
+
     *out = (*env)->CallFloatMethod(env, format->object, format->jfields.get_float_id, key);
     if ((ret = ff_jni_exception_check(env, 1, format)) < 0) {
         ret = 0;
@@ -834,6 +859,7 @@ int ff_AMediaFormat_getBuffer(FFAMediaFormat* format, const char *name, void** d
 
     JNIEnv *env = NULL;
     jstring key = NULL;
+    jboolean contains_key;
     jobject result = NULL;
 
     av_assert0(format != NULL);
@@ -846,6 +872,12 @@ int ff_AMediaFormat_getBuffer(FFAMediaFormat* format, const char *name, void** d
         goto fail;
     }
 
+    contains_key = (*env)->CallBooleanMethod(env, format->object, format->jfields.contains_key_id, key);
+    if (!contains_key || (ret = ff_jni_exception_check(env, 1, format)) < 0) {
+        ret = 0;
+        goto fail;
+    }
+
     result = (*env)->CallObjectMethod(env, format->object, format->jfields.get_bytebuffer_id, key);
     if ((ret = ff_jni_exception_check(env, 1, format)) < 0) {
         ret = 0;
@@ -885,6 +917,7 @@ int ff_AMediaFormat_getString(FFAMediaFormat* format, const char *name, const ch
 
     JNIEnv *env = NULL;
     jstring key = NULL;
+    jboolean contains_key;
     jstring result = NULL;
 
     av_assert0(format != NULL);
@@ -897,6 +930,12 @@ int ff_AMediaFormat_getString(FFAMediaFormat* format, const char *name, const ch
         goto fail;
     }
 
+    contains_key = (*env)->CallBooleanMethod(env, format->object, format->jfields.contains_key_id, key);
+    if (!contains_key || (ret = ff_jni_exception_check(env, 1, format)) < 0) {
+        ret = 0;
+        goto fail;
+    }
+
     result = (*env)->CallObjectMethod(env, format->object, format->jfields.get_string_id, key);
     if ((ret = ff_jni_exception_check(env, 1, format)) < 0) {
         ret = 0;
-- 
2.16.2