SkJpegMultiPicture.cpp File Reference

#include "src/codec/SkJpegMultiPicture.h"
#include "include/core/SkData.h"
#include "include/core/SkStream.h"
#include "src/base/SkEndian.h"
#include "src/codec/SkCodecPriv.h"
#include "src/codec/SkJpegConstants.h"
#include "src/codec/SkJpegSegmentScan.h"
#include "src/codec/SkTiffUtility.h"
#include <cstring>

Go to the source code of this file.

Macros
#define	WRITE_UINT16(value)
#define	WRITE_UINT32(value)

Functions
size_t	multi_picture_params_serialized_size (size_t numberOfImages)

Variables
constexpr size_t	kMpEndianSize = 4
constexpr uint8_t	kMpBigEndian [kMpEndianSize] = {0x4D, 0x4D, 0x00, 0x2A}
constexpr uint16_t	kTypeUnsignedLong = 0x4
constexpr uint16_t	kTypeUndefined = 0x7
constexpr uint32_t	kIfdEntrySize = 12
constexpr uint32_t	kIfdSerializedEntryCount = 3
constexpr uint16_t	kVersionTag = 0xB000
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 uint32_t	kNumberOfImagesCount = 1
constexpr uint16_t	kMPEntryTag = 0xB002
constexpr uint32_t	kMPEntrySize = 16
constexpr uint32_t	kMPEntryAttributeFormatMask = 0x7000000
constexpr uint32_t	kMPEntryAttributeFormatJpeg = 0x0000000
constexpr uint32_t	kMPEntryAttributeTypeMask = 0xFFFFFF
constexpr uint32_t	kMPEntryAttributeTypePrimary = 0x030000
constexpr uint16_t	kIndividualImageUniqueIDTag = 0xB003
constexpr uint32_t	kIndividualImageUniqueIDSize = 33
constexpr uint16_t	kTotalNumberCapturedFramesTag = 0xB004

Macro Definition Documentation

WRITE_UINT16

#define WRITE_UINT16

(

value

)

Value:

    do {                                            \
        if (!s.write16(SkEndian_SwapBE16(value))) { \
            return nullptr;                         \
        }                                           \
    } while (0)

Definition at line 236 of file SkJpegMultiPicture.cpp.

       {                                            \
        if (!s.write16(SkEndian_SwapBE16(value))) { \
            return nullptr;                         \
        }                                           \
    } while (0)

WRITE_UINT32

#define WRITE_UINT32

(

value

)

Value:

    do {                                            \
        if (!s.write32(SkEndian_SwapBE32(value))) { \
            return nullptr;                         \
        }                                           \
    } while (0)

Definition at line 243 of file SkJpegMultiPicture.cpp.

       {                                            \
        if (!s.write32(SkEndian_SwapBE32(value))) { \
            return nullptr;                         \
        }                                           \
    } while (0)

Function Documentation

multi_picture_params_serialized_size()

size_t multi_picture_params_serialized_size

(

size_t

numberOfImages

)

Definition at line 224 of file SkJpegMultiPicture.cpp.

                                                                   {
    return sizeof(kMpfSig) +                           // Signature
           kMpEndianSize +                             // Endianness
           sizeof(uint32_t) +                          // Index IFD Offset
           sizeof(uint16_t) +                          // IFD entry count
           kIfdSerializedEntryCount * kIfdEntrySize +  // 3 IFD entries at 12 bytes each
           sizeof(uint32_t) +                          // Attribute IFD offset
           numberOfImages * kMPEntrySize;              // MP Entries for each image
}

Variable Documentation

kIfdEntrySize

constexpr uint32_t kIfdEntrySize = 12

constexpr

Definition at line 26 of file SkJpegMultiPicture.cpp.

kIfdSerializedEntryCount

constexpr uint32_t kIfdSerializedEntryCount = 3

constexpr

Definition at line 27 of file SkJpegMultiPicture.cpp.

kIndividualImageUniqueIDSize

constexpr uint32_t kIndividualImageUniqueIDSize = 33

constexpr

Definition at line 47 of file SkJpegMultiPicture.cpp.

kIndividualImageUniqueIDTag

constexpr uint16_t kIndividualImageUniqueIDTag = 0xB003

constexpr

Definition at line 46 of file SkJpegMultiPicture.cpp.

kMpBigEndian

constexpr uint8_t kMpBigEndian[kMpEndianSize] = {0x4D, 0x4D, 0x00, 0x2A}

constexpr

Definition at line 21 of file SkJpegMultiPicture.cpp.

{0x4D, 0x4D, 0x00, 0x2A};

kMpEndianSize

constexpr size_t kMpEndianSize = 4

constexpr

Definition at line 20 of file SkJpegMultiPicture.cpp.

kMPEntryAttributeFormatJpeg

constexpr uint32_t kMPEntryAttributeFormatJpeg = 0x0000000

constexpr

Definition at line 41 of file SkJpegMultiPicture.cpp.

kMPEntryAttributeFormatMask

constexpr uint32_t kMPEntryAttributeFormatMask = 0x7000000

constexpr

Definition at line 40 of file SkJpegMultiPicture.cpp.

kMPEntryAttributeTypeMask

constexpr uint32_t kMPEntryAttributeTypeMask = 0xFFFFFF

constexpr

Definition at line 43 of file SkJpegMultiPicture.cpp.

kMPEntryAttributeTypePrimary

constexpr uint32_t kMPEntryAttributeTypePrimary = 0x030000

constexpr

Definition at line 44 of file SkJpegMultiPicture.cpp.

kMPEntrySize

constexpr uint32_t kMPEntrySize = 16

constexpr

Definition at line 38 of file SkJpegMultiPicture.cpp.

kMPEntryTag

constexpr uint16_t kMPEntryTag = 0xB002

constexpr

Definition at line 37 of file SkJpegMultiPicture.cpp.

kNumberOfImagesCount

constexpr uint32_t kNumberOfImagesCount = 1

constexpr

Definition at line 35 of file SkJpegMultiPicture.cpp.

kNumberOfImagesTag

constexpr uint16_t kNumberOfImagesTag = 0xB001

constexpr

Definition at line 34 of file SkJpegMultiPicture.cpp.

kTotalNumberCapturedFramesTag

constexpr uint16_t kTotalNumberCapturedFramesTag = 0xB004

constexpr

Definition at line 49 of file SkJpegMultiPicture.cpp.

kTypeUndefined

constexpr uint16_t kTypeUndefined = 0x7

constexpr

Definition at line 24 of file SkJpegMultiPicture.cpp.

kTypeUnsignedLong

constexpr uint16_t kTypeUnsignedLong = 0x4

constexpr

Definition at line 23 of file SkJpegMultiPicture.cpp.

kVersionCount

constexpr uint32_t kVersionCount = 4

constexpr

Definition at line 30 of file SkJpegMultiPicture.cpp.

kVersionExpected

constexpr uint8_t kVersionExpected[kVersionSize] = {'0', '1', '0', '0'}

constexpr

Definition at line 32 of file SkJpegMultiPicture.cpp.

{'0', '1', '0', '0'};

kVersionSize

constexpr size_t kVersionSize = 4

constexpr

Definition at line 31 of file SkJpegMultiPicture.cpp.

kVersionTag

constexpr uint16_t kVersionTag = 0xB000

constexpr

Definition at line 29 of file SkJpegMultiPicture.cpp.