CCodec: add support for tunneled playback.

Bug: 151997287
Change-Id: I50e417e5a070684623c37af05bc3c97120b5da7f
diff --git a/media/codec2/sfplugin/CCodec.cpp b/media/codec2/sfplugin/CCodec.cpp
index a23b9bd..6205317 100644
--- a/media/codec2/sfplugin/CCodec.cpp
+++ b/media/codec2/sfplugin/CCodec.cpp
@@ -44,6 +44,7 @@
 #include <media/stagefright/BufferProducerWrapper.h>
 #include <media/stagefright/MediaCodecConstants.h>
 #include <media/stagefright/PersistentSurface.h>
+#include <utils/NativeHandle.h>
 
 #include "C2OMXNode.h"
 #include "CCodecBufferChannel.h"
@@ -795,10 +796,30 @@
             mChannel->setMetaMode(CCodecBufferChannel::MODE_ANW);
         }
 
+        status_t err = OK;
         sp<RefBase> obj;
         sp<Surface> surface;
         if (msg->findObject("native-window", &obj)) {
             surface = static_cast<Surface *>(obj.get());
+            // setup tunneled playback
+            if (surface != nullptr) {
+                Mutexed<std::unique_ptr<Config>>::Locked configLocked(mConfig);
+                const std::unique_ptr<Config> &config = *configLocked;
+                if ((config->mDomain & Config::IS_DECODER)
+                        && (config->mDomain & Config::IS_VIDEO)) {
+                    int32_t tunneled;
+                    if (msg->findInt32("feature-tunneled-playback", &tunneled) && tunneled != 0) {
+                        ALOGI("Configuring TUNNELED video playback.");
+
+                        err = configureTunneledVideoPlayback(comp, &config->mSidebandHandle, msg);
+                        if (err != OK) {
+                            ALOGE("configureTunneledVideoPlayback failed!");
+                            return err;
+                        }
+                        config->mTunneled = true;
+                    }
+                }
+            }
             setSurface(surface);
         }
 
@@ -1023,7 +1044,7 @@
             sdkParams = msg->dup();
             sdkParams->removeEntryAt(sdkParams->findEntryByName(PARAMETER_KEY_VIDEO_BITRATE));
         }
-        status_t err = config->getConfigUpdateFromSdkParams(
+        err = config->getConfigUpdateFromSdkParams(
                 comp, sdkParams, Config::IS_CONFIG, C2_DONT_BLOCK, &configUpdate);
         if (err != OK) {
             ALOGW("failed to convert configuration to c2 params");
@@ -1703,6 +1724,19 @@
 }
 
 status_t CCodec::setSurface(const sp<Surface> &surface) {
+    Mutexed<std::unique_ptr<Config>>::Locked configLocked(mConfig);
+    const std::unique_ptr<Config> &config = *configLocked;
+    if (config->mTunneled && config->mSidebandHandle != nullptr) {
+        sp<ANativeWindow> nativeWindow = static_cast<ANativeWindow *>(surface.get());
+        status_t err = native_window_set_sideband_stream(
+                nativeWindow.get(),
+                const_cast<native_handle_t *>(config->mSidebandHandle->handle()));
+        if (err != OK) {
+            ALOGE("NativeWindow(%p) native_window_set_sideband_stream(%p) failed! (err %d).",
+                    nativeWindow.get(), config->mSidebandHandle->handle(), err);
+            return err;
+        }
+    }
     return mChannel->setSurface(surface);
 }
 
@@ -2099,6 +2133,51 @@
     deadline->set(now + (timeout * mult), name);
 }
 
+status_t CCodec::configureTunneledVideoPlayback(
+        std::shared_ptr<Codec2Client::Component> comp,
+        sp<NativeHandle> *sidebandHandle,
+        const sp<AMessage> &msg) {
+    std::vector<std::unique_ptr<C2SettingResult>> failures;
+
+    std::unique_ptr<C2PortTunneledModeTuning::output> tunneledPlayback =
+        C2PortTunneledModeTuning::output::AllocUnique(
+            1,
+            C2PortTunneledModeTuning::Struct::SIDEBAND,
+            C2PortTunneledModeTuning::Struct::REALTIME,
+            0);
+    // TODO: use KEY_AUDIO_HW_SYNC, KEY_HARDWARE_AV_SYNC_ID when they are in MediaCodecConstants.h
+    if (msg->findInt32("audio-hw-sync", &tunneledPlayback->m.syncId[0])) {
+        tunneledPlayback->m.syncType = C2PortTunneledModeTuning::Struct::sync_type_t::AUDIO_HW_SYNC;
+    } else if (msg->findInt32("hw-av-sync-id", &tunneledPlayback->m.syncId[0])) {
+        tunneledPlayback->m.syncType = C2PortTunneledModeTuning::Struct::sync_type_t::HW_AV_SYNC;
+    } else {
+        tunneledPlayback->m.syncType = C2PortTunneledModeTuning::Struct::sync_type_t::REALTIME;
+        tunneledPlayback->setFlexCount(0);
+    }
+    c2_status_t c2err = comp->config({ tunneledPlayback.get() }, C2_MAY_BLOCK, &failures);
+    if (c2err != C2_OK) {
+        return UNKNOWN_ERROR;
+    }
+
+    std::vector<std::unique_ptr<C2Param>> params;
+    c2err = comp->query({}, {C2PortTunnelHandleTuning::output::PARAM_TYPE}, C2_DONT_BLOCK, &params);
+    if (c2err == C2_OK && params.size() == 1u) {
+        C2PortTunnelHandleTuning::output *videoTunnelSideband =
+            C2PortTunnelHandleTuning::output::From(params[0].get());
+        // Currently, Codec2 only supports non-fd case for sideband native_handle.
+        native_handle_t *handle = native_handle_create(0, videoTunnelSideband->flexCount());
+        *sidebandHandle = NativeHandle::create(handle, true /* ownsHandle */);
+        if (handle != nullptr && videoTunnelSideband->flexCount()) {
+            memcpy(handle->data, videoTunnelSideband->m.values,
+                    sizeof(int32_t) * videoTunnelSideband->flexCount());
+            return OK;
+        } else {
+            return NO_MEMORY;
+        }
+    }
+    return UNKNOWN_ERROR;
+}
+
 void CCodec::initiateReleaseIfStuck() {
     std::string name;
     bool pendingDeadline = false;
@@ -2111,7 +2190,9 @@
             pendingDeadline = true;
         }
     }
-    if (name.empty()) {
+    Mutexed<std::unique_ptr<Config>>::Locked configLocked(mConfig);
+    const std::unique_ptr<Config> &config = *configLocked;
+    if (config->mTunneled == false && name.empty()) {
         constexpr std::chrono::steady_clock::duration kWorkDurationThreshold = 3s;
         std::chrono::steady_clock::duration elapsed = mChannel->elapsed();
         if (elapsed >= kWorkDurationThreshold) {
@@ -2500,4 +2581,3 @@
 }
 
 }  // namespace android
-
diff --git a/media/codec2/sfplugin/CCodecConfig.cpp b/media/codec2/sfplugin/CCodecConfig.cpp
index d3814fb..71aada5 100644
--- a/media/codec2/sfplugin/CCodecConfig.cpp
+++ b/media/codec2/sfplugin/CCodecConfig.cpp
@@ -18,6 +18,7 @@
 #define LOG_TAG "CCodecConfig"
 #include <cutils/properties.h>
 #include <log/log.h>
+#include <utils/NativeHandle.h>
 
 #include <C2Component.h>
 #include <C2Param.h>
@@ -321,7 +322,8 @@
 CCodecConfig::CCodecConfig()
     : mInputFormat(new AMessage),
       mOutputFormat(new AMessage),
-      mUsingSurface(false) { }
+      mUsingSurface(false),
+      mTunneled(false) { }
 
 void CCodecConfig::initializeStandardParams() {
     typedef Domain D;
diff --git a/media/codec2/sfplugin/CCodecConfig.h b/media/codec2/sfplugin/CCodecConfig.h
index 2895746..7e060f6 100644
--- a/media/codec2/sfplugin/CCodecConfig.h
+++ b/media/codec2/sfplugin/CCodecConfig.h
@@ -35,6 +35,7 @@
 namespace android {
 
 struct AMessage;
+class NativeHandle;
 struct StandardParams;
 
 /**
@@ -141,6 +142,10 @@
 
     std::set<std::string> mLastConfig;
 
+    /// Tunneled codecs
+    bool mTunneled;
+    sp<NativeHandle> mSidebandHandle;
+
     CCodecConfig();
 
     /// initializes the members required to manage the format: descriptors, reflector,
diff --git a/media/codec2/sfplugin/include/media/stagefright/CCodec.h b/media/codec2/sfplugin/include/media/stagefright/CCodec.h
index dbbb5d5..ba69d7e 100644
--- a/media/codec2/sfplugin/include/media/stagefright/CCodec.h
+++ b/media/codec2/sfplugin/include/media/stagefright/CCodec.h
@@ -126,6 +126,11 @@
             const std::chrono::milliseconds &timeout,
             const char *name);
 
+    status_t configureTunneledVideoPlayback(
+            const std::shared_ptr<Codec2Client::Component> comp,
+            sp<NativeHandle> *sidebandHandle,
+            const sp<AMessage> &msg);
+
     enum {
         kWhatAllocate,
         kWhatConfigure,