Improve AudioPolicyManager dump

Make the dump more concise and clear. Condense lists
of ports, profiles and devices to simplify viewing.
Hide headers for empty lists.

Bug: 205884982
Test: adb shell dumpsys media.audio_policy
Change-Id: I2f5155710fa5c6f1ef027811ef2336b63ba4f038
diff --git a/media/libaudiofoundation/AudioPort.cpp b/media/libaudiofoundation/AudioPort.cpp
index 634b2e1..4513323 100644
--- a/media/libaudiofoundation/AudioPort.cpp
+++ b/media/libaudiofoundation/AudioPort.cpp
@@ -162,9 +162,16 @@
     }
 }
 
-void AudioPort::dump(std::string *dst, int spaces, bool verbose) const {
+void AudioPort::dump(std::string *dst, int spaces, const char* extraInfo, bool verbose) const {
     if (!mName.empty()) {
-        dst->append(base::StringPrintf("%*s- name: %s\n", spaces, "", mName.c_str()));
+        dst->append(base::StringPrintf("\"%s\"%s", mName.c_str(),
+                        extraInfo != nullptr ? "; " : ""));
+    }
+    if (extraInfo != nullptr) {
+        dst->append(base::StringPrintf("%s", extraInfo));
+    }
+    if (!mName.empty() || extraInfo != nullptr) {
+        dst->append("\n");
     }
     if (verbose) {
         std::string profilesStr;
diff --git a/media/libaudiofoundation/AudioProfile.cpp b/media/libaudiofoundation/AudioProfile.cpp
index 15f2d68..ec10bc9 100644
--- a/media/libaudiofoundation/AudioProfile.cpp
+++ b/media/libaudiofoundation/AudioProfile.cpp
@@ -99,18 +99,14 @@
 
 void AudioProfile::dump(std::string *dst, int spaces) const
 {
-    dst->append(base::StringPrintf("%s%s%s\n", mIsDynamicFormat ? "[dynamic format]" : "",
+    dst->append(base::StringPrintf("\"%s\"; ", mName.c_str()));
+    dst->append(base::StringPrintf("%s%s%s%s", mIsDynamicFormat ? "[dynamic format]" : "",
              mIsDynamicChannels ? "[dynamic channels]" : "",
-             mIsDynamicRate ? "[dynamic rates]" : ""));
-    if (mName.length() != 0) {
-        dst->append(base::StringPrintf("%*s- name: %s\n", spaces, "", mName.c_str()));
-    }
-    std::string formatLiteral;
-    if (FormatConverter::toString(mFormat, formatLiteral)) {
-        dst->append(base::StringPrintf("%*s- format: %s\n", spaces, "", formatLiteral.c_str()));
-    }
+             mIsDynamicRate ? "[dynamic rates]" : "", isDynamic() ? "; " : ""));
+    dst->append(base::StringPrintf("%s (0x%x)\n", audio_format_to_string(mFormat), mFormat));
+
     if (!mSamplingRates.empty()) {
-        dst->append(base::StringPrintf("%*s- sampling rates:", spaces, ""));
+        dst->append(base::StringPrintf("%*ssampling rates: ", spaces, ""));
         for (auto it = mSamplingRates.begin(); it != mSamplingRates.end();) {
             dst->append(base::StringPrintf("%d", *it));
             dst->append(++it == mSamplingRates.end() ? "" : ", ");
@@ -119,7 +115,7 @@
     }
 
     if (!mChannelMasks.empty()) {
-        dst->append(base::StringPrintf("%*s- channel masks:", spaces, ""));
+        dst->append(base::StringPrintf("%*schannel masks: ", spaces, ""));
         for (auto it = mChannelMasks.begin(); it != mChannelMasks.end();) {
             dst->append(base::StringPrintf("0x%04x", *it));
             dst->append(++it == mChannelMasks.end() ? "" : ", ");
@@ -128,7 +124,7 @@
     }
 
     dst->append(base::StringPrintf(
-            "%*s- encapsulation type: %#x\n", spaces, "", mEncapsulationType));
+             "%*s%s\n", spaces, "", audio_encapsulation_type_to_string(mEncapsulationType)));
 }
 
 bool AudioProfile::equals(const sp<AudioProfile>& other) const
@@ -321,11 +317,12 @@
 
 void AudioProfileVector::dump(std::string *dst, int spaces) const
 {
-    dst->append(base::StringPrintf("%*s- Profiles:\n", spaces, ""));
+    dst->append(base::StringPrintf("%*s- Profiles (%zu):\n", spaces - 2, "", size()));
     for (size_t i = 0; i < size(); i++) {
-        dst->append(base::StringPrintf("%*sProfile %zu:", spaces + 4, "", i));
+        const std::string prefix = base::StringPrintf("%*s%zu. ", spaces + 1, "", i + 1);
+        dst->append(prefix);
         std::string profileStr;
-        at(i)->dump(&profileStr, spaces + 8);
+        at(i)->dump(&profileStr, prefix.size());
         dst->append(profileStr);
     }
 }
diff --git a/media/libaudiofoundation/DeviceDescriptorBase.cpp b/media/libaudiofoundation/DeviceDescriptorBase.cpp
index c8222e7..88ba544 100644
--- a/media/libaudiofoundation/DeviceDescriptorBase.cpp
+++ b/media/libaudiofoundation/DeviceDescriptorBase.cpp
@@ -113,29 +113,24 @@
 void DeviceDescriptorBase::dump(std::string *dst, int spaces, int index,
                                 const char* extraInfo, bool verbose) const
 {
-    dst->append(base::StringPrintf("%*sDevice %d:\n", spaces, "", index + 1));
+    const std::string prefix = base::StringPrintf("%*s %d. ", spaces, "", index + 1);
+    dst->append(prefix);
     if (mId != 0) {
-        dst->append(base::StringPrintf("%*s- id: %2d\n", spaces, "", mId));
+        dst->append(base::StringPrintf("Port ID: %d; ", mId));
     }
-
     if (extraInfo != nullptr) {
-        dst->append(extraInfo);
+        dst->append(base::StringPrintf("%s; ", extraInfo));
     }
-
-    dst->append(base::StringPrintf("%*s- type: %-48s\n",
-            spaces, "", ::android::toString(mDeviceTypeAddr.mType).c_str()));
+    dst->append(base::StringPrintf("%s (%s)\n",
+                    audio_device_to_string(mDeviceTypeAddr.mType),
+                    mDeviceTypeAddr.toString(true /*includeSensitiveInfo*/).c_str()));
 
     dst->append(base::StringPrintf(
-            "%*s- supported encapsulation modes: %u\n", spaces, "", mEncapsulationModes));
-    dst->append(base::StringPrintf(
-            "%*s- supported encapsulation metadata types: %u\n",
-            spaces, "", mEncapsulationMetadataTypes));
+                    "%*sEncapsulation modes: %u, metadata types: %u\n",
+                    static_cast<int>(prefix.size()), "",
+                    mEncapsulationModes, mEncapsulationMetadataTypes));
 
-    if (mDeviceTypeAddr.address().size() != 0) {
-        dst->append(base::StringPrintf(
-                "%*s- address: %-32s\n", spaces, "", mDeviceTypeAddr.getAddress()));
-    }
-    AudioPort::dump(dst, spaces, verbose);
+    AudioPort::dump(dst, prefix.size(), nullptr, verbose);
 }
 
 std::string DeviceDescriptorBase::toString(bool includeSensitiveInfo) const
diff --git a/media/libaudiofoundation/include/media/AudioPort.h b/media/libaudiofoundation/include/media/AudioPort.h
index 985e05e..d6a098f 100644
--- a/media/libaudiofoundation/include/media/AudioPort.h
+++ b/media/libaudiofoundation/include/media/AudioPort.h
@@ -111,7 +111,8 @@
                         ((mFlags.input & AUDIO_INPUT_FLAG_MMAP_NOIRQ) != 0)));
     }
 
-    void dump(std::string *dst, int spaces, bool verbose = true) const;
+    void dump(std::string *dst, int spaces,
+              const char* extraInfo = nullptr, bool verbose = true) const;
 
     void log(const char* indent) const;
 
diff --git a/media/libaudiofoundation/include/media/AudioProfile.h b/media/libaudiofoundation/include/media/AudioProfile.h
index 62670e4..d7cddb7 100644
--- a/media/libaudiofoundation/include/media/AudioProfile.h
+++ b/media/libaudiofoundation/include/media/AudioProfile.h
@@ -69,7 +69,7 @@
     void setDynamicFormat(bool dynamic) { mIsDynamicFormat = dynamic; }
     bool isDynamicFormat() const { return mIsDynamicFormat; }
 
-    bool isDynamic() { return mIsDynamicFormat || mIsDynamicChannels || mIsDynamicRate; }
+    bool isDynamic() const { return mIsDynamicFormat || mIsDynamicChannels || mIsDynamicRate; }
 
     audio_encapsulation_type_t getEncapsulationType() const { return mEncapsulationType; }
     void setEncapsulationType(audio_encapsulation_type_t encapsulationType) {
diff --git a/services/audiopolicy/common/managerdefinitions/Android.bp b/services/audiopolicy/common/managerdefinitions/Android.bp
index 227c2d8..1f23ae3 100644
--- a/services/audiopolicy/common/managerdefinitions/Android.bp
+++ b/services/audiopolicy/common/managerdefinitions/Android.bp
@@ -30,6 +30,7 @@
     ],
     shared_libs: [
         "libaudiofoundation",
+        "libbase",
         "libcutils",
         "libhidlbase",
         "liblog",
diff --git a/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h b/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h
index cf699d3..856ae66 100644
--- a/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h
+++ b/services/audiopolicy/common/managerdefinitions/include/AudioInputDescriptor.h
@@ -54,7 +54,7 @@
     DeviceVector supportedDevices() const  {
         return mProfile != nullptr ? mProfile->getSupportedDevices() :  DeviceVector(); }
 
-    void dump(String8 *dst) const override;
+    void dump(String8 *dst, int spaces, const char* extraInfo) const override;
 
     audio_io_handle_t   mIoHandle = AUDIO_IO_HANDLE_NONE; // input handle
     wp<AudioPolicyMix>  mPolicyMix;                   // non NULL when used by a dynamic policy
diff --git a/services/audiopolicy/common/managerdefinitions/include/AudioOutputDescriptor.h b/services/audiopolicy/common/managerdefinitions/include/AudioOutputDescriptor.h
index d06496d..69082ac 100644
--- a/services/audiopolicy/common/managerdefinitions/include/AudioOutputDescriptor.h
+++ b/services/audiopolicy/common/managerdefinitions/include/AudioOutputDescriptor.h
@@ -149,7 +149,7 @@
                           AudioPolicyClientInterface *clientInterface);
     virtual ~AudioOutputDescriptor() {}
 
-    void dump(String8 *dst) const override;
+    void dump(String8 *dst, int spaces, const char* extraInfo = nullptr) const override;
     void        log(const char* indent);
 
     virtual DeviceVector devices() const { return mDevices; }
@@ -336,7 +336,7 @@
                             AudioPolicyClientInterface *clientInterface);
     virtual ~SwAudioOutputDescriptor() {}
 
-            void dump(String8 *dst) const override;
+    void dump(String8 *dst, int spaces, const char* extraInfo = nullptr) const override;
     virtual DeviceVector devices() const;
     void setDevices(const DeviceVector &devices) { mDevices = devices; }
     bool sharesHwModuleWith(const sp<SwAudioOutputDescriptor>& outputDesc);
@@ -441,7 +441,7 @@
                             AudioPolicyClientInterface *clientInterface);
     virtual ~HwAudioOutputDescriptor() {}
 
-            void dump(String8 *dst) const override;
+    void dump(String8 *dst, int spaces, const char* extraInfo) const override;
 
     virtual bool setVolume(float volumeDb,
                            VolumeSource volumeSource, const StreamTypeVector &streams,
diff --git a/services/audiopolicy/common/managerdefinitions/include/ClientDescriptor.h b/services/audiopolicy/common/managerdefinitions/include/ClientDescriptor.h
index 74b3405..e421c94 100644
--- a/services/audiopolicy/common/managerdefinitions/include/ClientDescriptor.h
+++ b/services/audiopolicy/common/managerdefinitions/include/ClientDescriptor.h
@@ -269,10 +269,11 @@
     size_t getClientCount() const {
         return mClients.size();
     }
-    virtual void dump(String8 *dst) const {
+    virtual void dump(String8 *dst, int spaces, const char* extraInfo = nullptr) const {
+        (void)extraInfo;
         size_t index = 0;
         for (const auto& client: getClientIterable()) {
-            client->dump(dst, 2, index++);
+            client->dump(dst, spaces, index++);
         }
     }
 
diff --git a/services/audiopolicy/common/managerdefinitions/include/HwModule.h b/services/audiopolicy/common/managerdefinitions/include/HwModule.h
index 54b3408..436fcc1 100644
--- a/services/audiopolicy/common/managerdefinitions/include/HwModule.h
+++ b/services/audiopolicy/common/managerdefinitions/include/HwModule.h
@@ -115,7 +115,7 @@
                        const sp<PolicyAudioPort> &dstPort) const;
 
     // TODO remove from here (split serialization)
-    void dump(String8 *dst) const;
+    void dump(String8 *dst, int spaces) const;
 
 private:
     void refreshSupportedDevices();
diff --git a/services/audiopolicy/common/managerdefinitions/include/IOProfile.h b/services/audiopolicy/common/managerdefinitions/include/IOProfile.h
index 2e680e3..90b812d 100644
--- a/services/audiopolicy/common/managerdefinitions/include/IOProfile.h
+++ b/services/audiopolicy/common/managerdefinitions/include/IOProfile.h
@@ -97,7 +97,7 @@
                              uint32_t flags,
                              bool exactMatchRequiredForInputFlags = false) const;
 
-    void dump(String8 *dst) const;
+    void dump(String8 *dst, int spaces) const;
     void log();
 
     bool hasSupportedDevices() const { return !mSupportedDevices.isEmpty(); }
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioCollections.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioCollections.cpp
index cd10010..0fe5c16 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioCollections.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioCollections.cpp
@@ -17,6 +17,8 @@
 #define LOG_TAG "APM::AudioCollections"
 //#define LOG_NDEBUG 0
 
+#include <android-base/stringprintf.h>
+
 #include "AudioCollections.h"
 #include "AudioRoute.h"
 #include "HwModule.h"
@@ -40,10 +42,11 @@
     if (audioRouteVector.isEmpty()) {
         return;
     }
-    dst->appendFormat("\n%*sAudio Routes (%zu):\n", spaces, "", audioRouteVector.size());
+    dst->appendFormat("%*s- Audio Routes (%zu):\n", spaces - 2, "", audioRouteVector.size());
     for (size_t i = 0; i < audioRouteVector.size(); i++) {
-        dst->appendFormat("%*s- Route %zu:\n", spaces, "", i + 1);
-        audioRouteVector.itemAt(i)->dump(dst, 4);
+        const std::string prefix = base::StringPrintf("%*s%zu. ", spaces + 1, "", i + 1);
+        dst->append(prefix.c_str());
+        audioRouteVector.itemAt(i)->dump(dst, prefix.size());
     }
 }
 
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
index 6c1240b..966b8cb 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioInputDescriptor.cpp
@@ -17,6 +17,8 @@
 #define LOG_TAG "APM::AudioInputDescriptor"
 //#define LOG_NDEBUG 0
 
+#include <android-base/stringprintf.h>
+
 #include <audiomanager/AudioManager.h>
 #include <media/AudioPolicy.h>
 #include <policy.h>
@@ -508,17 +510,20 @@
     }
 }
 
-void AudioInputDescriptor::dump(String8 *dst) const
+void AudioInputDescriptor::dump(String8 *dst, int spaces, const char* extraInfo) const
 {
-    dst->appendFormat(" ID: %d\n", getId());
-    dst->appendFormat(" Sampling rate: %d\n", mSamplingRate);
-    dst->appendFormat(" Format: %d\n", mFormat);
-    dst->appendFormat(" Channels: %08x\n", mChannelMask);
-    dst->appendFormat(" Devices %s\n", mDevice->toString(true /*includeSensitiveInfo*/).c_str());
-    mEnabledEffects.dump(dst, 1 /*spaces*/, false /*verbose*/);
-    dst->append(" AudioRecord Clients:\n");
-    ClientMapHandler<RecordClientDescriptor>::dump(dst);
-    dst->append("\n");
+    dst->appendFormat("Port ID: %d%s%s\n",
+            getId(), extraInfo != nullptr ? "; " : "", extraInfo != nullptr ? extraInfo : "");
+    dst->appendFormat("%*s%s; %d; Channel mask: 0x%x\n", spaces, "",
+            audio_format_to_string(mFormat), mSamplingRate, mChannelMask);
+    dst->appendFormat("%*sDevices: %s\n", spaces, "",
+            mDevice->toString(true /*includeSensitiveInfo*/).c_str());
+    mEnabledEffects.dump(dst, spaces /*spaces*/, false /*verbose*/);
+    if (getClientCount() != 0) {
+        dst->appendFormat("%*sAudioRecord Clients (%zu):\n", spaces, "", getClientCount());
+        ClientMapHandler<RecordClientDescriptor>::dump(dst, spaces);
+        dst->append("\n");
+    }
 }
 
 bool AudioInputCollection::isSourceActive(audio_source_t source) const
@@ -606,10 +611,12 @@
 
 void AudioInputCollection::dump(String8 *dst) const
 {
-    dst->append("\nInputs dump:\n");
+    dst->appendFormat("\n Inputs (%zu):\n", size());
     for (size_t i = 0; i < size(); i++) {
-        dst->appendFormat("- Input %d dump:\n", keyAt(i));
-        valueAt(i)->dump(dst);
+        const std::string prefix = base::StringPrintf("  %zu. ", i + 1);
+        const std::string extraInfo = base::StringPrintf("I/O handle: %d", keyAt(i));
+        dst->appendFormat("%s", prefix.c_str());
+        valueAt(i)->dump(dst, prefix.size(), extraInfo.c_str());
     }
 }
 
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp
index b054c6d..1ae66de 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioOutputDescriptor.cpp
@@ -17,6 +17,8 @@
 #define LOG_TAG "APM::AudioOutputDescriptor"
 //#define LOG_NDEBUG 0
 
+#include <android-base/stringprintf.h>
+
 #include <AudioPolicyInterface.h>
 #include "AudioOutputDescriptor.h"
 #include "AudioPolicyMix.h"
@@ -243,32 +245,42 @@
         return client->volumeSource() != volumeSourceToIgnore; }) != end(mActiveClients);
 }
 
-void AudioOutputDescriptor::dump(String8 *dst) const
+void AudioOutputDescriptor::dump(String8 *dst, int spaces, const char* extraInfo) const
 {
-    dst->appendFormat(" ID: %d\n", mId);
-    dst->appendFormat(" Sampling rate: %d\n", mSamplingRate);
-    dst->appendFormat(" Format: %08x\n", mFormat);
-    dst->appendFormat(" Channels: %08x\n", mChannelMask);
-    dst->appendFormat(" Devices: %s\n", devices().toString(true /*includeSensitiveInfo*/).c_str());
-    dst->appendFormat(" Global active count: %u\n", mGlobalActiveCount);
-    for (const auto &iter : mRoutingActivities) {
-        dst->appendFormat(" Product Strategy id: %d", iter.first);
-        iter.second.dump(dst, 4);
+    dst->appendFormat("Port ID: %d%s%s\n",
+            mId, extraInfo != nullptr ? "; " : "", extraInfo != nullptr ? extraInfo : "");
+    dst->appendFormat("%*s%s; %d; Channel mask: 0x%x\n", spaces, "",
+            audio_format_to_string(mFormat), mSamplingRate, mChannelMask);
+    dst->appendFormat("%*sDevices: %s\n", spaces, "",
+            devices().toString(true /*includeSensitiveInfo*/).c_str());
+    dst->appendFormat("%*sGlobal active count: %u\n", spaces, "", mGlobalActiveCount);
+    if (!mRoutingActivities.empty()) {
+        dst->appendFormat("%*sProduct Strategies (%zu):\n", spaces, "", mRoutingActivities.size());
+        for (const auto &iter : mRoutingActivities) {
+            dst->appendFormat("%*sid %d: ", spaces + 1, "", iter.first);
+            iter.second.dump(dst, 0);
+        }
     }
-    for (const auto &iter : mVolumeActivities) {
-        dst->appendFormat(" Volume Activities id: %d", iter.first);
-        iter.second.dump(dst, 4);
+    if (!mVolumeActivities.empty()) {
+        dst->appendFormat("%*sVolume Activities (%zu):\n", spaces, "", mVolumeActivities.size());
+        for (const auto &iter : mVolumeActivities) {
+            dst->appendFormat("%*sid %d: ", spaces + 1, "", iter.first);
+            iter.second.dump(dst, 0);
+        }
     }
-    dst->append(" AudioTrack Clients:\n");
-    ClientMapHandler<TrackClientDescriptor>::dump(dst);
-    dst->append("\n");
+    if (getClientCount() != 0) {
+        dst->appendFormat("%*sAudioTrack Clients (%zu):\n", spaces, "", getClientCount());
+        ClientMapHandler<TrackClientDescriptor>::dump(dst, spaces);
+        dst->append("\n");
+    }
     if (!mActiveClients.empty()) {
-        dst->append(" AudioTrack active (stream) clients:\n");
+        dst->appendFormat("%*sAudioTrack active (stream) clients (%zu):\n", spaces, "",
+                mActiveClients.size());
         size_t index = 0;
         for (const auto& client : mActiveClients) {
-            client->dump(dst, 2, index++);
+            client->dump(dst, spaces, index++);
         }
-        dst->append(" \n");
+        dst->append("\n");
     }
 }
 
@@ -292,11 +304,18 @@
     }
 }
 
-void SwAudioOutputDescriptor::dump(String8 *dst) const
+void SwAudioOutputDescriptor::dump(String8 *dst, int spaces, const char* extraInfo) const
 {
-    dst->appendFormat(" Latency: %d\n", mLatency);
-    dst->appendFormat(" Flags %08x\n", mFlags);
-    AudioOutputDescriptor::dump(dst);
+    String8 allExtraInfo;
+    if (extraInfo != nullptr) {
+        allExtraInfo.appendFormat("%s; ", extraInfo);
+    }
+    std::string flagsLiteral = toString(mFlags);
+    allExtraInfo.appendFormat("Latency: %d; 0x%04x", mLatency, mFlags);
+    if (!flagsLiteral.empty()) {
+        allExtraInfo.appendFormat(" (%s)", flagsLiteral.c_str());
+    }
+    AudioOutputDescriptor::dump(dst, spaces, allExtraInfo.c_str());
 }
 
 DeviceVector SwAudioOutputDescriptor::devices() const
@@ -685,11 +704,11 @@
 {
 }
 
-void HwAudioOutputDescriptor::dump(String8 *dst) const
+void HwAudioOutputDescriptor::dump(String8 *dst, int spaces, const char* extraInfo) const
 {
-    AudioOutputDescriptor::dump(dst);
-    dst->append("Source:\n");
-    mSource->dump(dst, 0, 0);
+    AudioOutputDescriptor::dump(dst, spaces, extraInfo);
+    dst->appendFormat("%*sSource:\n", spaces, "");
+    mSource->dump(dst, spaces, 0);
 }
 
 void HwAudioOutputDescriptor::toAudioPortConfig(
@@ -862,10 +881,12 @@
 
 void SwAudioOutputCollection::dump(String8 *dst) const
 {
-    dst->append("\nOutputs dump:\n");
+    dst->appendFormat("\n Outputs (%zu):\n", size());
     for (size_t i = 0; i < size(); i++) {
-        dst->appendFormat("- Output %d dump:\n", keyAt(i));
-        valueAt(i)->dump(dst);
+        const std::string prefix = base::StringPrintf("  %zu. ", i + 1);
+        const std::string extraInfo = base::StringPrintf("I/O handle: %d", keyAt(i));
+        dst->appendFormat("%s", prefix.c_str());
+        valueAt(i)->dump(dst, prefix.size(), extraInfo.c_str());
     }
 }
 
@@ -884,10 +905,12 @@
 
 void HwAudioOutputCollection::dump(String8 *dst) const
 {
-    dst->append("\nOutputs dump:\n");
+    dst->appendFormat("\n Outputs (%zu):\n", size());
     for (size_t i = 0; i < size(); i++) {
-        dst->appendFormat("- Output %d dump:\n", keyAt(i));
-        valueAt(i)->dump(dst);
+        const std::string prefix = base::StringPrintf("  %zu. ", i + 1);
+        const std::string extraInfo = base::StringPrintf("I/O handle: %d", keyAt(i));
+        dst->appendFormat("%s", prefix.c_str());
+        valueAt(i)->dump(dst, prefix.size(), extraInfo.c_str());
     }
 }
 
diff --git a/services/audiopolicy/common/managerdefinitions/src/AudioRoute.cpp b/services/audiopolicy/common/managerdefinitions/src/AudioRoute.cpp
index 866417e..53cc473 100644
--- a/services/audiopolicy/common/managerdefinitions/src/AudioRoute.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/AudioRoute.cpp
@@ -25,15 +25,16 @@
 
 void AudioRoute::dump(String8 *dst, int spaces) const
 {
-    dst->appendFormat("%*s- Type: %s\n", spaces, "", mType == AUDIO_ROUTE_MUX ? "Mux" : "Mix");
-    dst->appendFormat("%*s- Sink: %s\n", spaces, "", mSink->getTagName().c_str());
+    dst->appendFormat("%s; Sink: \"%s\"\n",
+            mType == AUDIO_ROUTE_MUX ? "Mux" : "Mix", mSink->getTagName().c_str());
     if (mSources.size() != 0) {
-        dst->appendFormat("%*s- Sources: \n", spaces, "");
+        dst->appendFormat("%*sSources: ", spaces, "");
         for (size_t i = 0; i < mSources.size(); i++) {
-            dst->appendFormat("%*s%s \n", spaces + 4, "", mSources[i]->getTagName().c_str());
+            dst->appendFormat("\"%s\"", mSources[i]->getTagName().c_str());
+            if (i + 1 < mSources.size()) dst->append(", ");
         }
+        dst->append("\n");
     }
-    dst->append("\n");
 }
 
 bool AudioRoute::supportsPatch(const sp<PolicyAudioPort> &srcPort,
diff --git a/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp b/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
index 141c2be..d76d0c2 100644
--- a/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/DeviceDescriptor.cpp
@@ -180,7 +180,7 @@
 {
     String8 extraInfo;
     if (!mTagName.empty()) {
-        extraInfo.appendFormat("%*s- tag name: %s\n", spaces, "", mTagName.c_str());
+        extraInfo.appendFormat("\"%s\"", mTagName.c_str());
     }
 
     std::string descBaseDumpStr;
@@ -447,7 +447,7 @@
     if (isEmpty()) {
         return;
     }
-    dst->appendFormat("%*s- %s devices:\n", spaces, "", tag.string());
+    dst->appendFormat("%*s%s devices (%zu):\n", spaces, "", tag.string(), size());
     for (size_t i = 0; i < size(); i++) {
         itemAt(i)->dump(dst, spaces + 2, i, verbose);
     }
diff --git a/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp b/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
index 3a143b0..2977f38 100644
--- a/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/HwModule.cpp
@@ -17,11 +17,13 @@
 #define LOG_TAG "APM::HwModule"
 //#define LOG_NDEBUG 0
 
-#include "HwModule.h"
-#include "IOProfile.h"
+#include <android-base/stringprintf.h>
 #include <policy.h>
 #include <system/audio.h>
 
+#include "HwModule.h"
+#include "IOProfile.h"
+
 namespace android {
 
 HwModule::HwModule(const char *name, uint32_t halVersionMajor, uint32_t halVersionMinor)
@@ -247,28 +249,28 @@
     return false;
 }
 
-void HwModule::dump(String8 *dst) const
+void HwModule::dump(String8 *dst, int spaces) const
 {
-    dst->appendFormat("  - name: %s\n", getName());
-    dst->appendFormat("  - handle: %d\n", mHandle);
-    dst->appendFormat("  - version: %u.%u\n", getHalVersionMajor(), getHalVersionMinor());
+    dst->appendFormat("Handle: %d; \"%s\"\n", mHandle, getName());
     if (mOutputProfiles.size()) {
-        dst->append("  - outputs:\n");
+        dst->appendFormat("%*s- Output MixPorts (%zu):\n", spaces - 2, "", mOutputProfiles.size());
         for (size_t i = 0; i < mOutputProfiles.size(); i++) {
-            dst->appendFormat("    output %zu:\n", i);
-            mOutputProfiles[i]->dump(dst);
+            const std::string prefix = base::StringPrintf("%*s%zu. ", spaces, "", i + 1);
+            dst->append(prefix.c_str());
+            mOutputProfiles[i]->dump(dst, prefix.size());
         }
     }
     if (mInputProfiles.size()) {
-        dst->append("  - inputs:\n");
+        dst->appendFormat("%*s- Input MixPorts (%zu):\n", spaces - 2, "", mInputProfiles.size());
         for (size_t i = 0; i < mInputProfiles.size(); i++) {
-            dst->appendFormat("    input %zu:\n", i);
-            mInputProfiles[i]->dump(dst);
+            const std::string prefix = base::StringPrintf("%*s%zu. ", spaces, "", i + 1);
+            dst->append(prefix.c_str());
+            mInputProfiles[i]->dump(dst, prefix.size());
         }
     }
-    mDeclaredDevices.dump(dst, String8("Declared"), 2, true);
-    mDynamicDevices.dump(dst, String8("Dynamic"),  2, true);
-    dumpAudioRouteVector(mRoutes, dst, 2);
+    mDeclaredDevices.dump(dst, String8("- Declared"), spaces - 2, true);
+    mDynamicDevices.dump(dst, String8("- Dynamic"),  spaces - 2, true);
+    dumpAudioRouteVector(mRoutes, dst, spaces);
 }
 
 sp <HwModule> HwModuleCollection::getModuleFromName(const char *name) const
@@ -462,10 +464,11 @@
 
 void HwModuleCollection::dump(String8 *dst) const
 {
-    dst->append("\nHW Modules dump:\n");
+    dst->appendFormat("\n Hardware modules (%zu):\n", size());
     for (size_t i = 0; i < size(); i++) {
-        dst->appendFormat("- HW Module %zu:\n", i + 1);
-        itemAt(i)->dump(dst);
+        const std::string prefix = base::StringPrintf("  %zu. ", i + 1);
+        dst->append(prefix.c_str());
+        itemAt(i)->dump(dst, prefix.size());
     }
 }
 
diff --git a/services/audiopolicy/common/managerdefinitions/src/IOProfile.cpp b/services/audiopolicy/common/managerdefinitions/src/IOProfile.cpp
index 624ad95..21f2018 100644
--- a/services/audiopolicy/common/managerdefinitions/src/IOProfile.cpp
+++ b/services/audiopolicy/common/managerdefinitions/src/IOProfile.cpp
@@ -116,28 +116,30 @@
                 return device == deviceDesc && deviceDesc->hasCurrentEncodedFormat(); }) == 1;
 }
 
-void IOProfile::dump(String8 *dst) const
+void IOProfile::dump(String8 *dst, int spaces) const
 {
-    std::string portStr;
-    AudioPort::dump(&portStr, 4);
-    dst->append(portStr.c_str());
-
-    dst->appendFormat("    - flags: 0x%04x", getFlags());
+    String8 extraInfo;
+    extraInfo.appendFormat("0x%04x", getFlags());
     std::string flagsLiteral =
             getRole() == AUDIO_PORT_ROLE_SINK ?
             toString(static_cast<audio_input_flags_t>(getFlags())) :
             getRole() == AUDIO_PORT_ROLE_SOURCE ?
             toString(static_cast<audio_output_flags_t>(getFlags())) : "";
     if (!flagsLiteral.empty()) {
-        dst->appendFormat(" (%s)", flagsLiteral.c_str());
+        extraInfo.appendFormat(" (%s)", flagsLiteral.c_str());
     }
-    dst->append("\n");
-    mSupportedDevices.dump(dst, String8("Supported"), 4, false);
-    dst->appendFormat("\n    - maxOpenCount: %u - curOpenCount: %u\n",
-             maxOpenCount, curOpenCount);
-    dst->appendFormat("    - maxActiveCount: %u - curActiveCount: %u\n",
-             maxActiveCount, curActiveCount);
-    dst->appendFormat("    - recommendedMuteDurationMs: %u ms\n", recommendedMuteDurationMs);
+
+    std::string portStr;
+    AudioPort::dump(&portStr, spaces, extraInfo.c_str());
+    dst->append(portStr.c_str());
+
+    mSupportedDevices.dump(dst, String8("- Supported"), spaces - 2, false);
+    dst->appendFormat("%*s- maxOpenCount: %u; curOpenCount: %u\n",
+            spaces - 2, "", maxOpenCount, curOpenCount);
+    dst->appendFormat("%*s- maxActiveCount: %u; curActiveCount: %u\n",
+            spaces - 2, "", maxActiveCount, curActiveCount);
+    dst->appendFormat("%*s- recommendedMuteDurationMs: %u ms\n",
+            spaces - 2, "", recommendedMuteDurationMs);
 }
 
 void IOProfile::log()
diff --git a/services/audiopolicy/engineconfigurable/Android.bp b/services/audiopolicy/engineconfigurable/Android.bp
index a747822..dc8d9cf 100644
--- a/services/audiopolicy/engineconfigurable/Android.bp
+++ b/services/audiopolicy/engineconfigurable/Android.bp
@@ -41,8 +41,9 @@
         "libaudiopolicyengineconfigurable_pfwwrapper",
 
     ],
-    shared_libs: [
+  shared_libs: [
         "libaudiofoundation",
+        "libbase",
         "liblog",
         "libcutils",
         "libutils",
diff --git a/services/audiopolicy/enginedefault/Android.bp b/services/audiopolicy/enginedefault/Android.bp
index 7f9c0ac..4671fe9 100644
--- a/services/audiopolicy/enginedefault/Android.bp
+++ b/services/audiopolicy/enginedefault/Android.bp
@@ -31,6 +31,7 @@
     ],
     shared_libs: [
         "libaudiofoundation",
+        "libbase",
         "liblog",
         "libcutils",
         "libutils",
diff --git a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
index 86e0566..0152769 100644
--- a/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
+++ b/services/audiopolicy/managerdefault/AudioPolicyManager.cpp
@@ -3568,7 +3568,7 @@
 void AudioPolicyManager::dump(String8 *dst) const
 {
     dst->appendFormat("\nAudioPolicyManager Dump: %p\n", this);
-    dst->appendFormat(" Primary Output: %d\n",
+    dst->appendFormat(" Primary Output I/O handle: %d\n",
              hasPrimaryOutput() ? mPrimaryOutput->mIoHandle : AUDIO_IO_HANDLE_NONE);
     std::string stateLiteral;
     AudioModeConverter::toString(mEngine->getPhoneState(), stateLiteral);
@@ -3593,8 +3593,8 @@
     dst->appendFormat(" Communnication Strategy: %d\n", mCommunnicationStrategy);
     dst->appendFormat(" Config source: %s\n", mConfig.getSource().c_str()); // getConfig not const
 
-    mAvailableOutputDevices.dump(dst, String8("Available output"));
-    mAvailableInputDevices.dump(dst, String8("Available input"));
+    mAvailableOutputDevices.dump(dst, String8("\n Available output"));
+    mAvailableInputDevices.dump(dst, String8("\n Available input"));
     mHwModulesAll.dump(dst);
     mOutputs.dump(dst);
     mInputs.dump(dst);