1 files changed, 78 insertions, 0 deletions
diff --git a/lib/include/ultrahdr/multipictureformat.h b/lib/include/ultrahdr/multipictureformat.h
new file mode 100644
index 0000000..9a9141b
--- /dev/null
+++ b/lib/include/ultrahdr/multipictureformat.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ULTRAHDR_MULTIPICTUREFORMAT_H
+#define ULTRAHDR_MULTIPICTUREFORMAT_H
+
+#include <memory>
+
+#ifndef USE_BIG_ENDIAN_IN_MPF
+#define USE_BIG_ENDIAN_IN_MPF true
+#endif
+
+#undef Endian_SwapBE32
+#undef Endian_SwapBE16
+#if USE_BIG_ENDIAN_IN_MPF
+#define Endian_SwapBE32(n) EndianSwap32(n)
+#define Endian_SwapBE16(n) EndianSwap16(n)
+#else
+#define Endian_SwapBE32(n) (n)
+#define Endian_SwapBE16(n) (n)
+#endif
+
+#include "ultrahdr/ultrahdr.h"
+#include "ultrahdr/jpegr.h"
+#include "ultrahdr/gainmapmath.h"
+#include "ultrahdr/jpegrutils.h"
+
+namespace ultrahdr {
+
+constexpr size_t kNumPictures = 2;
+constexpr size_t kMpEndianSize = 4;
+constexpr uint16_t kTagSerializedCount = 3;
+constexpr uint32_t kTagSize = 12;
+
+constexpr uint16_t kTypeLong = 0x4;
+constexpr uint16_t kTypeUndefined = 0x7;
+
+static constexpr uint8_t kMpfSig[] = {'M', 'P', 'F', '\0'};
+constexpr uint8_t kMpLittleEndian[kMpEndianSize] = {0x49, 0x49, 0x2A, 0x00};
+constexpr uint8_t kMpBigEndian[kMpEndianSize] = {0x4D, 0x4D, 0x00, 0x2A};
+
+constexpr uint16_t kVersionTag = 0xB000;
+constexpr uint16_t kVersionType = kTypeUndefined;
+constexpr uint32_t kVersionCount = 4;
+constexpr size_t kVersionSize = 4;
+constexpr uint8_t kVersionExpected[kVersionSize] = {'0', '1', '0', '0'};
+
+constexpr uint16_t kNumberOfImagesTag = 0xB001;
+constexpr uint16_t kNumberOfImagesType = kTypeLong;
+constexpr uint32_t kNumberOfImagesCount = 1;
+
+constexpr uint16_t kMPEntryTag = 0xB002;
+constexpr uint16_t kMPEntryType = kTypeUndefined;
+constexpr uint32_t kMPEntrySize = 16;
+
+constexpr uint32_t kMPEntryAttributeFormatJpeg = 0x0000000;
+constexpr uint32_t kMPEntryAttributeTypePrimary = 0x030000;
+
+size_t calculateMpfSize();
+std::shared_ptr<DataStruct> generateMpf(int primary_image_size, int primary_image_offset,
+                                        int secondary_image_size, int secondary_image_offset);
+
+}  // namespace ultrahdr
+
+#endif  // ULTRAHDR_MULTIPICTUREFORMAT_H