Merge "Remove support for audio HAL V2 from the framework"
diff --git a/media/bufferpool/2.0/AccessorImpl.cpp b/media/bufferpool/2.0/AccessorImpl.cpp
index 6111fea..1d2562e 100644
--- a/media/bufferpool/2.0/AccessorImpl.cpp
+++ b/media/bufferpool/2.0/AccessorImpl.cpp
@@ -39,6 +39,8 @@
 
     static constexpr size_t kMinAllocBytesForEviction = 1024*1024*15;
     static constexpr size_t kMinBufferCountForEviction = 25;
+    static constexpr size_t kMaxUnusedBufferCount = 64;
+    static constexpr size_t kUnusedBufferCountTarget = kMaxUnusedBufferCount - 16;
 
     static constexpr nsecs_t kEvictGranularityNs = 1000000000; // 1 sec
     static constexpr nsecs_t kEvictDurationNs = 5000000000; // 5 secs
@@ -724,9 +726,11 @@
 }
 
 void Accessor::Impl::BufferPool::cleanUp(bool clearCache) {
-    if (clearCache || mTimestampUs > mLastCleanUpUs + kCleanUpDurationUs) {
+    if (clearCache || mTimestampUs > mLastCleanUpUs + kCleanUpDurationUs ||
+            mStats.buffersNotInUse() > kMaxUnusedBufferCount) {
         mLastCleanUpUs = mTimestampUs;
-        if (mTimestampUs > mLastLogUs + kLogDurationUs) {
+        if (mTimestampUs > mLastLogUs + kLogDurationUs ||
+                mStats.buffersNotInUse() > kMaxUnusedBufferCount) {
             mLastLogUs = mTimestampUs;
             ALOGD("bufferpool2 %p : %zu(%zu size) total buffers - "
                   "%zu(%zu size) used buffers - %zu/%zu (recycle/alloc) - "
@@ -737,8 +741,9 @@
                   mStats.mTotalFetches, mStats.mTotalTransfers);
         }
         for (auto freeIt = mFreeBuffers.begin(); freeIt != mFreeBuffers.end();) {
-            if (!clearCache && (mStats.mSizeCached < kMinAllocBytesForEviction
-                    || mBuffers.size() < kMinBufferCountForEviction)) {
+            if (!clearCache && mStats.buffersNotInUse() <= kUnusedBufferCountTarget &&
+                    (mStats.mSizeCached < kMinAllocBytesForEviction ||
+                     mBuffers.size() < kMinBufferCountForEviction)) {
                 break;
             }
             auto it = mBuffers.find(*freeIt);
diff --git a/media/bufferpool/2.0/AccessorImpl.h b/media/bufferpool/2.0/AccessorImpl.h
index cd1b4d0..3d39941 100644
--- a/media/bufferpool/2.0/AccessorImpl.h
+++ b/media/bufferpool/2.0/AccessorImpl.h
@@ -193,6 +193,12 @@
                 : mSizeCached(0), mBuffersCached(0), mSizeInUse(0), mBuffersInUse(0),
                   mTotalAllocations(0), mTotalRecycles(0), mTotalTransfers(0), mTotalFetches(0) {}
 
+            /// # of currently unused buffers
+            size_t buffersNotInUse() const {
+                ALOG_ASSERT(mBuffersCached >= mBuffersInUse);
+                return mBuffersCached - mBuffersInUse;
+            }
+
             /// A new buffer is allocated on an allocation request.
             void onBufferAllocated(size_t allocSize) {
                 mSizeCached += allocSize;
diff --git a/media/bufferpool/2.0/BufferPoolClient.cpp b/media/bufferpool/2.0/BufferPoolClient.cpp
index 342fef6..9308b81 100644
--- a/media/bufferpool/2.0/BufferPoolClient.cpp
+++ b/media/bufferpool/2.0/BufferPoolClient.cpp
@@ -32,6 +32,8 @@
 static constexpr int64_t kReceiveTimeoutUs = 1000000; // 100ms
 static constexpr int kPostMaxRetry = 3;
 static constexpr int kCacheTtlUs = 1000000; // TODO: tune
+static constexpr size_t kMaxCachedBufferCount = 64;
+static constexpr size_t kCachedBufferCountTarget = kMaxCachedBufferCount - 16;
 
 class BufferPoolClient::Impl
         : public std::enable_shared_from_this<BufferPoolClient::Impl> {
@@ -136,6 +138,10 @@
             --mActive;
             mLastChangeUs = getTimestampNow();
         }
+
+        int cachedBufferCount() const {
+            return mBuffers.size() - mActive;
+        }
     } mCache;
 
     // FMQ - release notifier
@@ -668,10 +674,12 @@
 // should have mCache.mLock
 void BufferPoolClient::Impl::evictCaches(bool clearCache) {
     int64_t now = getTimestampNow();
-    if (now >= mLastEvictCacheUs + kCacheTtlUs || clearCache) {
+    if (now >= mLastEvictCacheUs + kCacheTtlUs ||
+            clearCache || mCache.cachedBufferCount() > kMaxCachedBufferCount) {
         size_t evicted = 0;
         for (auto it = mCache.mBuffers.begin(); it != mCache.mBuffers.end();) {
-            if (!it->second->hasCache() && (it->second->expire() || clearCache)) {
+            if (!it->second->hasCache() && (it->second->expire() ||
+                        clearCache || mCache.cachedBufferCount() > kCachedBufferCountTarget)) {
                 it = mCache.mBuffers.erase(it);
                 ++evicted;
             } else {
diff --git a/media/codec2/hidl/1.0/utils/types.cpp b/media/codec2/hidl/1.0/utils/types.cpp
index 1f0c856..72f7c43 100644
--- a/media/codec2/hidl/1.0/utils/types.cpp
+++ b/media/codec2/hidl/1.0/utils/types.cpp
@@ -895,13 +895,12 @@
         BufferPoolSender* bufferPoolSender,
         std::list<BaseBlock>* baseBlocks,
         std::map<const void*, uint32_t>* baseBlockIndices) {
-    // TODO: C2InfoBuffer is not implemented.
-    (void)d;
-    (void)s;
-    (void)bufferPoolSender;
-    (void)baseBlocks;
-    (void)baseBlockIndices;
-    LOG(INFO) << "InfoBuffer not implemented.";
+    d->index = static_cast<ParamIndex>(s.index());
+    Buffer& dBuffer = d->buffer;
+    if (!objcpy(&dBuffer, s.data(), bufferPoolSender, baseBlocks, baseBlockIndices)) {
+        LOG(ERROR) << "Invalid C2InfoBuffer::data";
+        return false;
+    }
     return true;
 }
 
@@ -1336,6 +1335,68 @@
     return true;
 }
 
+// InfoBuffer -> C2InfoBuffer
+bool objcpy(std::vector<C2InfoBuffer> *d, const InfoBuffer& s,
+        const std::vector<C2BaseBlock>& baseBlocks) {
+
+    // Currently, a non-null C2InfoBufer must contain exactly 1 block.
+    if (s.buffer.blocks.size() == 0) {
+        return true;
+    } else if (s.buffer.blocks.size() != 1) {
+        LOG(ERROR) << "Invalid InfoBuffer::Buffer "
+                      "Currently, a C2InfoBuffer must contain exactly 1 block.";
+        return false;
+    }
+
+    const Block &sBlock = s.buffer.blocks[0];
+    if (sBlock.index >= baseBlocks.size()) {
+        LOG(ERROR) << "Invalid InfoBuffer::Buffer::blocks[0].index: "
+                      "Array index out of range.";
+        return false;
+    }
+    const C2BaseBlock &baseBlock = baseBlocks[sBlock.index];
+
+    // Parse meta.
+    std::vector<C2Param*> sBlockMeta;
+    if (!parseParamsBlob(&sBlockMeta, sBlock.meta)) {
+        LOG(ERROR) << "Invalid InfoBuffer::Buffer::blocks[0].meta.";
+        return false;
+    }
+
+    // Copy fence.
+    C2Fence dFence;
+    if (!objcpy(&dFence, sBlock.fence)) {
+        LOG(ERROR) << "Invalid InfoBuffer::Buffer::blocks[0].fence.";
+        return false;
+    }
+
+    // Construct a block.
+    switch (baseBlock.type) {
+    case C2BaseBlock::LINEAR:
+        if (sBlockMeta.size() == 1 && sBlockMeta[0] != nullptr &&
+            sBlockMeta[0]->size() == sizeof(C2Hidl_RangeInfo)) {
+            C2Hidl_RangeInfo *rangeInfo =
+                    reinterpret_cast<C2Hidl_RangeInfo*>(sBlockMeta[0]);
+            d->emplace_back(C2InfoBuffer::CreateLinearBuffer(
+                    s.index,
+                    baseBlock.linear->share(
+                            rangeInfo->offset, rangeInfo->length, dFence)));
+            return true;
+        }
+        LOG(ERROR) << "Invalid Meta for C2BaseBlock::Linear InfoBuffer.";
+        break;
+    case C2BaseBlock::GRAPHIC:
+        // It's not used now
+        LOG(ERROR) << "Non-Used C2BaseBlock::type for InfoBuffer.";
+        break;
+    default:
+        LOG(ERROR) << "Invalid C2BaseBlock::type for InfoBuffer.";
+        break;
+    }
+
+    return false;
+}
+
 // FrameData -> C2FrameData
 bool objcpy(C2FrameData* d, const FrameData& s,
         const std::vector<C2BaseBlock>& baseBlocks) {
@@ -1370,8 +1431,18 @@
         }
     }
 
-    // TODO: Implement this once C2InfoBuffer has constructors.
     d->infoBuffers.clear();
+    if (s.infoBuffers.size() == 0) {
+        // InfoBuffer is optional
+        return true;
+    }
+    d->infoBuffers.reserve(s.infoBuffers.size());
+    for (const InfoBuffer &sInfoBuffer: s.infoBuffers) {
+        if (!objcpy(&(d->infoBuffers), sInfoBuffer, baseBlocks)) {
+            LOG(ERROR) << "Invalid Framedata::infoBuffers.";
+            return false;
+        }
+    }
     return true;
 }