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Commit 4bc812d4 authored by Treehugger Robot's avatar Treehugger Robot Committed by Gerrit Code Review
Browse files

Merge "Codec2: Integrate support for the system-uncached DMA BUF Heap"

parents ba0e1e2c 9eda9bf8

media/codec2/vndk/C2DmaBufAllocator.cpp

+2 −2
Original line number Diff line number Diff line
@@ -315,8 +315,8 @@ c2_status_t C2DmaBufAllocator::mapUsage(C2MemoryUsage usage, size_t capacity, C2 
        if (mUsageMapper) {

            res = mUsageMapper(usage, capacity, heap_name, flags);

        } else {

            // No system-uncached yet, so disabled for now

            if (0 && !(usage.expected & (C2MemoryUsage::CPU_READ | C2MemoryUsage::CPU_WRITE)))

            if (C2DmaBufAllocator::system_uncached_supported() &&

                !(usage.expected & (C2MemoryUsage::CPU_READ | C2MemoryUsage::CPU_WRITE)))

                *heap_name = "system-uncached";

            else

                *heap_name = "system";

media/codec2/vndk/C2Store.cpp

+7 −1
Original line number Diff line number Diff line
@@ -822,7 +822,13 @@ private: 
                };



                static C2R setDmaBufUsage(bool /* mayBlock */, C2P<C2StoreDmaBufUsageInfo> &me) {

                    long long usage = (long long)me.get().m.usage;

                    if (C2DmaBufAllocator::system_uncached_supported() &&

                        !(usage & (C2MemoryUsage::CPU_READ | C2MemoryUsage::CPU_WRITE))) {

                        strncpy(me.set().m.heapName, "system-uncached", me.v.flexCount());

                    } else {

                        strncpy(me.set().m.heapName, "system", me.v.flexCount());

                    }

                    me.set().m.allocFlags = 0;

                    return C2R::Ok();

                };

media/codec2/vndk/include/C2DmaBufAllocator.h

+10 −0
Original line number Diff line number Diff line
@@ -84,6 +84,16 @@ class C2DmaBufAllocator : public C2Allocator { 
    void setUsageMapper(const UsageMapperFn& mapper, uint64_t minUsage, uint64_t maxUsage,

                        uint64_t blockSize);



    static bool system_uncached_supported(void) {

        static int cached_result = -1;



        if (cached_result == -1) {

            struct stat buffer;

            cached_result = (stat("/dev/dma_heap/system-uncached", &buffer) == 0);

        }

        return (cached_result == 1);

    };



   private:

    c2_status_t mInit;

    BufferAllocator mBufferAllocator;