codec2: do not count padding into allocation's capacity.
Padding is not usable so do not count it into an allocation's capacity.
At the same time document that fetchAllocation methods do not guarantee
exact capacity. Note, that in the future this behavior may be tightened
to guarantee this.
Bug: 187144478
Test: atest VtsHalMediaC2V1_0TargetAudioDecTest VtsHalMediaC2V1_0TargetAudioEncTest
Change-Id: I78f37971e959ea24f3ec689e790021984dfb74cb
diff --git a/media/codec2/vndk/C2AllocatorBlob.cpp b/media/codec2/vndk/C2AllocatorBlob.cpp
index 6340cba..8cfa1d7 100644
--- a/media/codec2/vndk/C2AllocatorBlob.cpp
+++ b/media/codec2/vndk/C2AllocatorBlob.cpp
@@ -178,6 +178,8 @@
return C2_CORRUPTED;
}
+ // Note: the BLOB allocator does not support padding as this functionality is expected
+ // to be provided by the gralloc implementation.
std::shared_ptr<C2GraphicAllocation> graphicAllocation;
c2_status_t status = mC2AllocatorGralloc->newGraphicAllocation(
capacity, kLinearBufferHeight, kLinearBufferFormat, usage, &graphicAllocation);
diff --git a/media/codec2/vndk/C2AllocatorIon.cpp b/media/codec2/vndk/C2AllocatorIon.cpp
index a8528df..77b265a 100644
--- a/media/codec2/vndk/C2AllocatorIon.cpp
+++ b/media/codec2/vndk/C2AllocatorIon.cpp
@@ -417,15 +417,16 @@
buffer = -1;
}
}
- return new Impl(ionFd, allocSize, bufferFd, buffer, id, ret);
-
+ // the padding is not usable so deduct it from the advertised capacity
+ return new Impl(ionFd, allocSize - sPadding, bufferFd, buffer, id, ret);
} else {
ret = ion_alloc_fd(ionFd, allocSize, align, heapMask, flags, &bufferFd);
ALOGV("ion_alloc_fd(ionFd = %d, size = %zu, align = %zu, prot = %d, flags = %d) "
"returned (%d) ; bufferFd = %d",
ionFd, allocSize, align, heapMask, flags, ret, bufferFd);
- return new ImplV2(ionFd, allocSize, bufferFd, id, ret);
+ // the padding is not usable so deduct it from the advertised capacity
+ return new ImplV2(ionFd, allocSize - sPadding, bufferFd, id, ret);
}
}
diff --git a/media/codec2/vndk/C2DmaBufAllocator.cpp b/media/codec2/vndk/C2DmaBufAllocator.cpp
index 6d8552a..1aa3d69 100644
--- a/media/codec2/vndk/C2DmaBufAllocator.cpp
+++ b/media/codec2/vndk/C2DmaBufAllocator.cpp
@@ -111,8 +111,27 @@
virtual bool equals(const std::shared_ptr<C2LinearAllocation>& other) const override;
// internal methods
- C2DmaBufAllocation(BufferAllocator& alloc, size_t size, C2String heap_name, unsigned flags,
- C2Allocator::id_t id);
+
+ /**
+ * Constructs an allocation via a new allocation.
+ *
+ * @param alloc allocator
+ * @param allocSize size used for the allocator
+ * @param capacity capacity advertised to the client
+ * @param heap_name name of the dmabuf heap (device)
+ * @param flags flags
+ * @param id allocator id
+ */
+ C2DmaBufAllocation(BufferAllocator& alloc, size_t allocSize, size_t capacity,
+ C2String heap_name, unsigned flags, C2Allocator::id_t id);
+
+ /**
+ * Constructs an allocation by wrapping an existing allocation.
+ *
+ * @param size capacity advertised to the client
+ * @param shareFd dmabuf fd of the wrapped allocation
+ * @param id allocator id
+ */
C2DmaBufAllocation(size_t size, int shareFd, C2Allocator::id_t id);
c2_status_t status() const;
@@ -246,19 +265,19 @@
}
}
-C2DmaBufAllocation::C2DmaBufAllocation(BufferAllocator& alloc, size_t size, C2String heap_name,
- unsigned flags, C2Allocator::id_t id)
- : C2LinearAllocation(size), mHandle(-1, 0) {
+C2DmaBufAllocation::C2DmaBufAllocation(BufferAllocator& alloc, size_t allocSize, size_t capacity,
+ C2String heap_name, unsigned flags, C2Allocator::id_t id)
+ : C2LinearAllocation(capacity), mHandle(-1, 0) {
int bufferFd = -1;
int ret = 0;
- bufferFd = alloc.Alloc(heap_name, size, flags);
+ bufferFd = alloc.Alloc(heap_name, allocSize, flags);
if (bufferFd < 0) {
ret = bufferFd;
}
// this may be a non-working handle if bufferFd is negative
- mHandle = C2HandleBuf(bufferFd, size);
+ mHandle = C2HandleBuf(bufferFd, capacity);
mId = id;
mInit = c2_status_t(c2_map_errno<ENOMEM, EACCES, EINVAL>(ret));
}
@@ -381,7 +400,7 @@
size_t allocSize = (size_t)capacity + sPadding;
// TODO: should we align allocation size to mBlockSize to reflect the true allocation size?
std::shared_ptr<C2DmaBufAllocation> alloc = std::make_shared<C2DmaBufAllocation>(
- mBufferAllocator, allocSize, heap_name, flags, getId());
+ mBufferAllocator, allocSize, allocSize - sPadding, heap_name, flags, getId());
ret = alloc->status();
if (ret == C2_OK) {
*allocation = alloc;