connect mediametrics service to statsd

take the collected media.metrics (as they arrive) and push a copy over
to statsd, the statistics logging subsystem.
gather data, wrap in protobufs apppropriately, and submit it to statsd.

Bug: 118782504
Test: statsd's test_drive app
Change-Id: Ieb82c43633851075e9eaf65d2a95c8cba87441ea
diff --git a/services/mediaanalytics/statsd_codec.cpp b/services/mediaanalytics/statsd_codec.cpp
new file mode 100644
index 0000000..dc8e4ef
--- /dev/null
+++ b/services/mediaanalytics/statsd_codec.cpp
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2019 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.
+ */
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "statsd_codec"
+#include <utils/Log.h>
+
+#include <dirent.h>
+#include <inttypes.h>
+#include <pthread.h>
+#include <pwd.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <statslog.h>
+
+#include "MediaAnalyticsService.h"
+#include "frameworks/base/core/proto/android/stats/mediametrics/mediametrics.pb.h"
+#include "iface_statsd.h"
+
+namespace android {
+
+bool statsd_codec(MediaAnalyticsItem *item)
+{
+    if (item == NULL) return false;
+
+    // these go into the statsd wrapper
+    nsecs_t timestamp = item->getTimestamp();
+    std::string pkgName = item->getPkgName();
+    int64_t pkgVersionCode = item->getPkgVersionCode();
+    int64_t mediaApexVersion = 0;
+
+
+    // the rest into our own proto
+    //
+    ::android::stats::mediametrics::CodecData metrics_proto;
+
+    // flesh out the protobuf we'll hand off with our data
+    //
+    // android.media.mediacodec.codec   string
+    char *codec = NULL;
+    if (item->getCString("android.media.mediacodec.codec", &codec)) {
+        metrics_proto.set_codec(codec);
+    }
+    // android.media.mediacodec.mime    string
+    char *mime = NULL;
+    if (item->getCString("android.media.mediacodec.mime", &mime)) {
+        metrics_proto.set_mime(mime);
+    }
+    // android.media.mediacodec.mode    string
+    char *mode = NULL;
+    if ( item->getCString("android.media.mediacodec.mode", &mode)) {
+        metrics_proto.set_mode(mode);
+    }
+    // android.media.mediacodec.encoder int32
+    int32_t encoder = -1;
+    if ( item->getInt32("android.media.mediacodec.encoder", &encoder)) {
+        metrics_proto.set_encoder(encoder);
+    }
+    // android.media.mediacodec.secure  int32
+    int32_t secure = -1;
+    if ( item->getInt32("android.media.mediacodec.secure", &secure)) {
+        metrics_proto.set_secure(secure);
+    }
+    // android.media.mediacodec.width   int32
+    int32_t width = -1;
+    if ( item->getInt32("android.media.mediacodec.width", &width)) {
+        metrics_proto.set_width(width);
+    }
+    // android.media.mediacodec.height  int32
+    int32_t height = -1;
+    if ( item->getInt32("android.media.mediacodec.height", &height)) {
+        metrics_proto.set_height(height);
+    }
+    // android.media.mediacodec.rotation-degrees        int32
+    int32_t rotation = -1;
+    if ( item->getInt32("android.media.mediacodec.rotation-degrees", &rotation)) {
+        metrics_proto.set_rotation(rotation);
+    }
+    // android.media.mediacodec.crypto  int32 (although missing if not needed
+    int32_t crypto = -1;
+    if ( item->getInt32("android.media.mediacodec.crypto", &crypto)) {
+        metrics_proto.set_crypto(crypto);
+    }
+    // android.media.mediacodec.profile int32
+    int32_t profile = -1;
+    if ( item->getInt32("android.media.mediacodec.profile", &profile)) {
+        metrics_proto.set_profile(profile);
+    }
+    // android.media.mediacodec.level   int32
+    int32_t level = -1;
+    if ( item->getInt32("android.media.mediacodec.level", &level)) {
+        metrics_proto.set_level(level);
+    }
+    // android.media.mediacodec.maxwidth        int32
+    int32_t maxwidth = -1;
+    if ( item->getInt32("android.media.mediacodec.maxwidth", &maxwidth)) {
+        metrics_proto.set_max_width(maxwidth);
+    }
+    // android.media.mediacodec.maxheight       int32
+    int32_t maxheight = -1;
+    if ( item->getInt32("android.media.mediacodec.maxheight", &maxheight)) {
+        metrics_proto.set_max_height(maxheight);
+    }
+    // android.media.mediacodec.errcode         int32
+    int32_t errcode = -1;
+    if ( item->getInt32("android.media.mediacodec.errcode", &errcode)) {
+        metrics_proto.set_error_code(errcode);
+    }
+    // android.media.mediacodec.errstate        string
+    char *errstate = NULL;
+    if ( item->getCString("android.media.mediacodec.errstate", &errstate)) {
+        metrics_proto.set_error_state(errstate);
+    }
+    // android.media.mediacodec.latency.max  int64
+    int64_t latency_max = -1;
+    if ( item->getInt64("android.media.mediacodec.latency.max", &latency_max)) {
+        metrics_proto.set_latency_max(latency_max);
+    }
+    // android.media.mediacodec.latency.min  int64
+    int64_t latency_min = -1;
+    if ( item->getInt64("android.media.mediacodec.latency.min", &latency_min)) {
+        metrics_proto.set_latency_min(latency_min);
+    }
+    // android.media.mediacodec.latency.avg  int64
+    int64_t latency_avg = -1;
+    if ( item->getInt64("android.media.mediacodec.latency.avg", &latency_avg)) {
+        metrics_proto.set_latency_avg(latency_avg);
+    }
+    // android.media.mediacodec.latency.n    int64
+    int64_t latency_count = -1;
+    if ( item->getInt64("android.media.mediacodec.latency.n", &latency_count)) {
+        metrics_proto.set_latency_count(latency_count);
+    }
+    // android.media.mediacodec.latency.unknown    int64
+    int64_t latency_unknown = -1;
+    if ( item->getInt64("android.media.mediacodec.latency.unknown", &latency_unknown)) {
+        metrics_proto.set_latency_unknown(latency_unknown);
+    }
+    // android.media.mediacodec.latency.hist    NOT EMITTED
+
+    std::string serialized;
+    if (!metrics_proto.SerializeToString(&serialized)) {
+        ALOGE("Failed to serialize codec metrics");
+        return false;
+    }
+
+    if (enabled_statsd) {
+        android::util::BytesField bf_serialized( serialized.c_str(), serialized.size());
+        (void)android::util::stats_write(android::util::MEDIAMETRICS_CODEC_REPORTED,
+                                   timestamp, pkgName.c_str(), pkgVersionCode,
+                                   mediaApexVersion,
+                                   bf_serialized);
+
+    } else {
+        ALOGV("NOT sending: private data (len=%zu)", strlen(serialized.c_str()));
+    }
+
+    // must free the strings that we were given
+    free(codec);
+    free(mime);
+    free(mode);
+    free(errstate);
+
+    return true;
+}
+
+};