diff --git a/include/media/MediaExtractorPluginApi.h b/include/media/MediaExtractorPluginApi.h
new file mode 100644
index 0000000..30c2b05
--- /dev/null
+++ b/include/media/MediaExtractorPluginApi.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MEDIA_EXTRACTOR_PLUGIN_API_H_
+#define MEDIA_EXTRACTOR_PLUGIN_API_H_
+
+#include <utils/Errors.h> // for status_t
+
+namespace android {
+
+struct MediaTrack;
+class MetaDataBase;
+class DataSourceBase;
+
+extern "C" {
+
+struct CMediaExtractor {
+    void *data;
+
+    void (*free)(void *data);
+    size_t (*countTracks)(void *data);
+    MediaTrack* (*getTrack)(void *data, size_t index);
+    status_t (*getTrackMetaData)(
+            void *data,
+            MetaDataBase& meta,
+            size_t index, uint32_t flags);
+
+    status_t (*getMetaData)(void *data, MetaDataBase& meta);
+    uint32_t (*flags)(void *data);
+    status_t (*setMediaCas)(void *data, const uint8_t* casToken, size_t size);
+    const char * (*name)(void *data);
+};
+
+typedef CMediaExtractor* (*CreatorFunc)(DataSourceBase *source, void *meta);
+typedef void (*FreeMetaFunc)(void *meta);
+
+// The sniffer can optionally fill in an opaque object, "meta", that helps
+// the corresponding extractor initialize its state without duplicating
+// effort already exerted by the sniffer. If "freeMeta" is given, it will be
+// called against the opaque object when it is no longer used.
+typedef CreatorFunc (*SnifferFunc)(
+        DataSourceBase *source, float *confidence,
+        void **meta, FreeMetaFunc *freeMeta);
+
+typedef struct {
+    const uint8_t b[16];
+} media_uuid_t;
+
+typedef struct {
+    // version number of this structure
+    const uint32_t def_version;
+
+    // A unique identifier for this extractor.
+    // See below for a convenience macro to create this from a string.
+    media_uuid_t extractor_uuid;
+
+    // Version number of this extractor. When two extractors with the same
+    // uuid are encountered, the one with the largest version number will
+    // be used.
+    const uint32_t extractor_version;
+
+    // a human readable name
+    const char *extractor_name;
+
+    // the sniffer function
+    const SnifferFunc sniff;
+} ExtractorDef;
+
+const uint32_t EXTRACTORDEF_VERSION = 1;
+
+// each plugin library exports one function of this type
+typedef ExtractorDef (*GetExtractorDef)();
+
+} // extern "C"
+
+}  // namespace android
+
+#endif  // MEDIA_EXTRACTOR_PLUGIN_API_H_
diff --git a/include/media/MediaExtractorPluginHelper.h b/include/media/MediaExtractorPluginHelper.h
new file mode 100644
index 0000000..465f76a
--- /dev/null
+++ b/include/media/MediaExtractorPluginHelper.h
@@ -0,0 +1,184 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MEDIA_EXTRACTOR_PLUGIN_HELPER_H_
+
+#define MEDIA_EXTRACTOR_PLUGIN_HELPER_H_
+
+#include <stdio.h>
+#include <vector>
+
+#include <utils/Errors.h>
+#include <utils/Log.h>
+#include <utils/RefBase.h>
+#include <media/MediaExtractorPluginApi.h>
+
+namespace android {
+
+class DataSourceBase;
+class MetaDataBase;
+struct MediaTrack;
+
+// extractor plugins can derive from this class which looks remarkably
+// like MediaExtractor and can be easily wrapped in the required C API
+class MediaExtractorPluginHelper
+{
+public:
+    virtual ~MediaExtractorPluginHelper() {}
+    virtual size_t countTracks() = 0;
+    virtual MediaTrack *getTrack(size_t index) = 0;
+
+    enum GetTrackMetaDataFlags {
+        kIncludeExtensiveMetaData = 1
+    };
+    virtual status_t getTrackMetaData(
+            MetaDataBase& meta,
+            size_t index, uint32_t flags = 0) = 0;
+
+    // Return container specific meta-data. The default implementation
+    // returns an empty metadata object.
+    virtual status_t getMetaData(MetaDataBase& meta) = 0;
+
+    enum Flags {
+        CAN_SEEK_BACKWARD  = 1,  // the "seek 10secs back button"
+        CAN_SEEK_FORWARD   = 2,  // the "seek 10secs forward button"
+        CAN_PAUSE          = 4,
+        CAN_SEEK           = 8,  // the "seek bar"
+    };
+
+    // If subclasses do _not_ override this, the default is
+    // CAN_SEEK_BACKWARD | CAN_SEEK_FORWARD | CAN_SEEK | CAN_PAUSE
+    virtual uint32_t flags() const {
+        return CAN_SEEK_BACKWARD | CAN_SEEK_FORWARD | CAN_SEEK | CAN_PAUSE;
+    };
+
+    virtual status_t setMediaCas(const uint8_t* /*casToken*/, size_t /*size*/) {
+        return INVALID_OPERATION;
+    }
+
+    virtual const char * name() { return "<unspecified>"; }
+
+protected:
+    MediaExtractorPluginHelper() {}
+
+private:
+    MediaExtractorPluginHelper(const MediaExtractorPluginHelper &);
+    MediaExtractorPluginHelper &operator=(const MediaExtractorPluginHelper &);
+};
+
+inline CMediaExtractor *wrap(MediaExtractorPluginHelper *extractor) {
+    CMediaExtractor *wrapper = (CMediaExtractor*) malloc(sizeof(CMediaExtractor));
+    wrapper->data = extractor;
+    wrapper->free = [](void *data) -> void {
+        delete (MediaExtractorPluginHelper*)(data);
+    };
+    wrapper->countTracks = [](void *data) -> size_t {
+        return ((MediaExtractorPluginHelper*)data)->countTracks();
+    };
+    wrapper->getTrack = [](void *data, size_t index) -> MediaTrack* {
+        return ((MediaExtractorPluginHelper*)data)->getTrack(index);
+    };
+    wrapper->getTrackMetaData = [](
+            void *data,
+            MetaDataBase& meta,
+            size_t index, uint32_t flags) -> status_t {
+        return ((MediaExtractorPluginHelper*)data)->getTrackMetaData(meta, index, flags);
+    };
+    wrapper->getMetaData = [](
+            void *data,
+            MetaDataBase& meta) -> status_t {
+        return ((MediaExtractorPluginHelper*)data)->getMetaData(meta);
+    };
+    wrapper->flags = [](
+            void *data) -> uint32_t {
+        return ((MediaExtractorPluginHelper*)data)->flags();
+    };
+    wrapper->setMediaCas = [](
+            void *data, const uint8_t *casToken, size_t size) -> status_t {
+        return ((MediaExtractorPluginHelper*)data)->setMediaCas(casToken, size);
+    };
+    wrapper->name = [](
+            void *data) -> const char * {
+        return ((MediaExtractorPluginHelper*)data)->name();
+    };
+    return wrapper;
+}
+
+// helpers to create a media_uuid_t from a string literal
+
+// purposely not defined anywhere so that this will fail to link if
+// expressions below are not evaluated at compile time
+int invalid_uuid_string(const char *);
+
+template <typename T, size_t N>
+constexpr uint8_t _digitAt_(const T (&s)[N], const size_t n) {
+    return s[n] >= '0' && s[n] <= '9' ? s[n] - '0'
+            : s[n] >= 'a' && s[n] <= 'f' ? s[n] - 'a' + 10
+                    : s[n] >= 'A' && s[n] <= 'F' ? s[n] - 'A' + 10
+                            : invalid_uuid_string("uuid: bad digits");
+}
+
+template <typename T, size_t N>
+constexpr uint8_t _hexByteAt_(const T (&s)[N], size_t n) {
+    return (_digitAt_(s, n) << 4) + _digitAt_(s, n + 1);
+}
+
+constexpr bool _assertIsDash_(char c) {
+    return c == '-' ? true : invalid_uuid_string("Wrong format");
+}
+
+template <size_t N>
+constexpr media_uuid_t constUUID(const char (&s) [N]) {
+    static_assert(N == 37, "uuid: wrong length");
+    return
+            _assertIsDash_(s[8]),
+            _assertIsDash_(s[13]),
+            _assertIsDash_(s[18]),
+            _assertIsDash_(s[23]),
+            media_uuid_t {{
+                _hexByteAt_(s, 0),
+                _hexByteAt_(s, 2),
+                _hexByteAt_(s, 4),
+                _hexByteAt_(s, 6),
+                _hexByteAt_(s, 9),
+                _hexByteAt_(s, 11),
+                _hexByteAt_(s, 14),
+                _hexByteAt_(s, 16),
+                _hexByteAt_(s, 19),
+                _hexByteAt_(s, 21),
+                _hexByteAt_(s, 24),
+                _hexByteAt_(s, 26),
+                _hexByteAt_(s, 28),
+                _hexByteAt_(s, 30),
+                _hexByteAt_(s, 32),
+                _hexByteAt_(s, 34),
+            }};
+}
+// Convenience macro to create a media_uuid_t from a string literal, which should
+// be formatted as "12345678-1234-1234-1234-123456789abc", as generated by
+// e.g. https://www.uuidgenerator.net/ or the 'uuidgen' linux command.
+// Hex digits may be upper or lower case.
+//
+// The macro call is otherwise equivalent to specifying the structure directly
+// (e.g. UUID("7d613858-5837-4a38-84c5-332d1cddee27") is the same as
+//       {{0x7d, 0x61, 0x38, 0x58, 0x58, 0x37, 0x4a, 0x38,
+//         0x84, 0xc5, 0x33, 0x2d, 0x1c, 0xdd, 0xee, 0x27}})
+
+#define UUID(str) []{ constexpr media_uuid_t uuid = constUUID(str); return uuid; }()
+
+}  // namespace android
+
+#endif  // MEDIA_EXTRACTOR_PLUGIN_HELPER_H_