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Unified Diff: base/files/memory_mapped_file_win.cc

Issue 430583005: Make VEA test support videos with different coded size and visible size (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: address review comments of patch set 11 Created 6 years, 4 months ago
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Index: base/files/memory_mapped_file_win.cc
diff --git a/base/files/memory_mapped_file_win.cc b/base/files/memory_mapped_file_win.cc
index 4e7e934e1c858823f13a2c7842a1daa0e390591b..b6756fc535f17a38dca2f51286d99cf8e07739cb 100644
--- a/base/files/memory_mapped_file_win.cc
+++ b/base/files/memory_mapped_file_win.cc
@@ -19,13 +19,17 @@ bool MemoryMappedFile::InitializeAsImageSection(const FilePath& file_name) {
}
bool MemoryMappedFile::MapFileRegionToMemory(
- const MemoryMappedFile::Region& region) {
+ const MemoryMappedFile::Region& region, bool write) {
ThreadRestrictions::AssertIOAllowed();
if (!file_.IsValid())
return false;
- int flags = image_ ? SEC_IMAGE | PAGE_READONLY : PAGE_READONLY;
+ int flags = 0;
+ if (image_)
+ flags = SEC_IMAGE | PAGE_READONLY;
+ else
+ flags = write ? PAGE_READWRITE : PAGE_READONLY;
file_mapping_.Set(::CreateFileMapping(file_.GetPlatformFile(), NULL,
flags, 0, 0, NULL));
@@ -66,8 +70,9 @@ bool MemoryMappedFile::MapFileRegionToMemory(
length_ = static_cast<size_t>(region.size);
}
+ int map_access = write ? FILE_MAP_WRITE : FILE_MAP_READ;
data_ = static_cast<uint8*>(::MapViewOfFile(file_mapping_.Get(),
- FILE_MAP_READ,
+ map_access,
map_start.HighPart,
map_start.LowPart,
map_size));

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