headers: Add emi.h

Required for https://github.com/mozilla-firefox/firefox/commit/0675e9ba405c2cd242f1676d633c918aa3416774

Signed-off-by: Biswapriyo Nath <nathbappai@gmail.com>
Signed-off-by: LIU Hao <lh_mouse@126.com>

mingw-w64-headers/include/emi.h

diff --git a/mingw-w64-headers/include/emi.h b/mingw-w64-headers/include/emi.h
new file mode 100644
index 0000000..f2fee6b
--- /dev/null
+++ b/mingw-w64-headers/include/emi.h
@@ -0,0 +1,83 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the mingw-w64 runtime package.
+ * No warranty is given; refer to the file DISCLAIMER.PD within this package.
+ */
+
+#ifndef _EMI_
+#define _EMI_
+
+#if (NTDDI_VERSION >= NTDDI_WINBLUE)
+
+#if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
+
+DEFINE_GUID(GUID_DEVICE_ENERGY_METER, 0x45bd8344, 0x7ed6, 0x49cf, 0xa4, 0x40, 0xc2, 0x76, 0xc9, 0x33, 0xb0, 0x53);
+
+#define IOCTL_EMI_GET_VERSION CTL_CODE(FILE_DEVICE_UNKNOWN, 0, METHOD_BUFFERED, FILE_READ_ACCESS)
+#define IOCTL_EMI_GET_METADATA_SIZE CTL_CODE(FILE_DEVICE_UNKNOWN, 1, METHOD_BUFFERED, FILE_READ_ACCESS)
+#define IOCTL_EMI_GET_METADATA CTL_CODE(FILE_DEVICE_UNKNOWN, 2, METHOD_BUFFERED, FILE_READ_ACCESS)
+#define IOCTL_EMI_GET_MEASUREMENT CTL_CODE(FILE_DEVICE_UNKNOWN, 3, METHOD_BUFFERED, FILE_READ_ACCESS)
+
+#define EMI_NAME_MAX 16
+
+#define EMI_VERSION_V1 1
+#define EMI_VERSION_V2 2
+
+typedef enum {
+  EmiMeasurementUnitPicowattHours
+} EMI_MEASUREMENT_UNIT;
+
+typedef struct {
+  USHORT EmiVersion;
+} EMI_VERSION;
+
+typedef struct {
+  ULONG MetadataSize;
+} EMI_METADATA_SIZE;
+
+typedef struct {
+  ULONGLONG AbsoluteEnergy;
+  ULONGLONG AbsoluteTime;
+} EMI_CHANNEL_MEASUREMENT_DATA;
+
+typedef struct {
+  EMI_MEASUREMENT_UNIT MeasurementUnit;
+  WCHAR HardwareOEM[EMI_NAME_MAX];
+  WCHAR HardwareModel[EMI_NAME_MAX];
+  USHORT HardwareRevision;
+  USHORT MeteredHardwareNameSize;
+  WCHAR MeteredHardwareName[ANYSIZE_ARRAY];
+} EMI_METADATA_V1;
+
+typedef EMI_CHANNEL_MEASUREMENT_DATA EMI_MEASUREMENT_DATA_V1;
+
+typedef EMI_METADATA_V1 EMI_METADATA;
+typedef EMI_MEASUREMENT_DATA_V1 EMI_MEASUREMENT_DATA;
+
+typedef struct {
+  EMI_MEASUREMENT_UNIT MeasurementUnit;
+  USHORT ChannelNameSize;
+  WCHAR ChannelName[ANYSIZE_ARRAY];
+} EMI_CHANNEL_V2;
+
+typedef struct {
+  WCHAR HardwareOEM[EMI_NAME_MAX];
+  WCHAR HardwareModel[EMI_NAME_MAX];
+  USHORT HardwareRevision;
+  USHORT ChannelCount;
+  EMI_CHANNEL_V2 Channels[ANYSIZE_ARRAY];
+} EMI_METADATA_V2;
+
+typedef struct {
+  EMI_CHANNEL_MEASUREMENT_DATA ChannelData[ANYSIZE_ARRAY];
+} EMI_MEASUREMENT_DATA_V2;
+
+#define EMI_CHANNEL_V2_LENGTH(_ChannelNameSize) (FIELD_OFFSET(EMI_CHANNEL_V2, ChannelName) + (_ChannelNameSize))
+
+#define EMI_CHANNEL_V2_NEXT_CHANNEL(_Channel) ((EMI_CHANNEL_V2 *)((PUCHAR)(_Channel) + EMI_CHANNEL_V2_LENGTH((_Channel)->ChannelNameSize)))
+
+#endif /* WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) */
+
+#endif /* (NTDDI_VERSION >= NTDDI_WINBLUE) */
+
+#endif /* _EMI_ */