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_audiotrack.cpp b/services/mediaanalytics/statsd_audiotrack.cpp
new file mode 100644
index 0000000..f250ced
--- /dev/null
+++ b/services/mediaanalytics/statsd_audiotrack.cpp
@@ -0,0 +1,156 @@
+/*
+ * 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_audiotrack"
+#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_audiotrack(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::AudioTrackData metrics_proto;
+
+    // flesh out the protobuf we'll hand off with our data
+    //
+
+    // static constexpr char kAudioTrackStreamType[] = "android.media.audiotrack.streamtype";
+    // optional string streamType;
+    char *streamtype = NULL;
+    if (item->getCString("android.media.audiotrack.streamtype", &streamtype)) {
+        metrics_proto.set_stream_type(streamtype);
+    }
+
+    // static constexpr char kAudioTrackContentType[] = "android.media.audiotrack.type";
+    // optional string contentType;
+    char *contenttype = NULL;
+    if (item->getCString("android.media.audiotrack.type", &contenttype)) {
+        metrics_proto.set_content_type(contenttype);
+    }
+
+    // static constexpr char kAudioTrackUsage[] = "android.media.audiotrack.usage";
+    // optional string trackUsage;
+    char *trackusage = NULL;
+    if (item->getCString("android.media.audiotrack.usage", &trackusage)) {
+        metrics_proto.set_track_usage(trackusage);
+    }
+
+    // static constexpr char kAudioTrackSampleRate[] = "android.media.audiotrack.samplerate";
+    // optional int32 samplerate;
+    int32_t samplerate = -1;
+    if (item->getInt32("android.media.audiotrack.samplerate", &samplerate)) {
+        metrics_proto.set_sample_rate(samplerate);
+    }
+
+    // static constexpr char kAudioTrackChannelMask[] = "android.media.audiotrack.channelmask";
+    // optional int64 channelMask;
+    int64_t channelMask = -1;
+    if (item->getInt64("android.media.audiotrack.channelmask", &channelMask)) {
+        metrics_proto.set_channel_mask(channelMask);
+    }
+
+    // NB: These are not yet exposed as public Java API constants.
+    // static constexpr char kAudioTrackUnderrunFrames[] = "android.media.audiotrack.underrunframes";
+    // optional int32 underrunframes;
+    int32_t underrunframes = -1;
+    if (item->getInt32("android.media.audiotrack.underrunframes", &underrunframes)) {
+        metrics_proto.set_underrun_frames(underrunframes);
+    }
+
+    // static constexpr char kAudioTrackStartupGlitch[] = "android.media.audiotrack.glitch.startup";
+    // optional int32 startupglitch;
+    int32_t startupglitch = -1;
+    if (item->getInt32("android.media.audiotrack.glitch.startup", &startupglitch)) {
+        metrics_proto.set_startup_glitch(startupglitch);
+    }
+
+    // portId (int32)
+    int32_t port_id = -1;
+    if (item->getInt32("android.media.audiotrack.portId", &port_id)) {
+        metrics_proto.set_port_id(port_id);
+    }
+    // encoding (string)
+    char *encoding = NULL;
+    if (item->getCString("android.media.audiotrack.encoding", &encoding)) {
+        metrics_proto.set_encoding(encoding);
+    }
+    // frameCount (int32)
+    int32_t frame_count = -1;
+    if (item->getInt32("android.media.audiotrack.frameCount", &frame_count)) {
+        metrics_proto.set_frame_count(frame_count);
+    }
+    // attributes (string)
+    char *attributes = NULL;
+    if (item->getCString("android.media.audiotrack.attributes", &attributes)) {
+        metrics_proto.set_attributes(attributes);
+    }
+
+    std::string serialized;
+    if (!metrics_proto.SerializeToString(&serialized)) {
+        ALOGE("Failed to serialize audiotrack metrics");
+        return false;
+    }
+
+    if (enabled_statsd) {
+        android::util::BytesField bf_serialized( serialized.c_str(), serialized.size());
+        (void)android::util::stats_write(android::util::MEDIAMETRICS_AUDIOTRACK_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(streamtype);
+    free(contenttype);
+    free(trackusage);
+    free(encoding);
+    free(attributes);
+
+    return true;
+}
+
+};