| #ifndef WUFFS_INCLUDE_GUARD |
| #define WUFFS_INCLUDE_GUARD |
| |
| // Wuffs ships as a "single file C library" or "header file library" as per |
| // https://github.com/nothings/stb/blob/master/docs/stb_howto.txt |
| // |
| // To use that single file as a "foo.c"-like implementation, instead of a |
| // "foo.h"-like header, #define WUFFS_IMPLEMENTATION before #include'ing or |
| // compiling it. |
| |
| // Wuffs' C code is generated automatically, not hand-written. These warnings' |
| // costs outweigh the benefits. |
| // |
| // The "elif defined(__clang__)" isn't redundant. While vanilla clang defines |
| // __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. |
| #if defined(__GNUC__) |
| #pragma GCC diagnostic push |
| #pragma GCC diagnostic ignored "-Wimplicit-fallthrough" |
| #pragma GCC diagnostic ignored "-Wmissing-field-initializers" |
| #pragma GCC diagnostic ignored "-Wunreachable-code" |
| #pragma GCC diagnostic ignored "-Wunused-function" |
| #pragma GCC diagnostic ignored "-Wunused-parameter" |
| #if defined(__cplusplus) |
| #pragma GCC diagnostic ignored "-Wold-style-cast" |
| #endif |
| #elif defined(__clang__) |
| #pragma clang diagnostic push |
| #pragma clang diagnostic ignored "-Wimplicit-fallthrough" |
| #pragma clang diagnostic ignored "-Wmissing-field-initializers" |
| #pragma clang diagnostic ignored "-Wunreachable-code" |
| #pragma clang diagnostic ignored "-Wunused-function" |
| #pragma clang diagnostic ignored "-Wunused-parameter" |
| #if defined(__cplusplus) |
| #pragma clang diagnostic ignored "-Wold-style-cast" |
| #endif |
| #endif |
| |
| // Copyright 2017 The Wuffs Authors. |
| // |
| // 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 |
| // |
| // https://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. |
| |
| #include <stdbool.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <string.h> |
| |
| // Note that Clang also defines __GNUC__. |
| #ifdef __cplusplus |
| #if (__cplusplus >= 201103L) || defined(_MSC_VER) |
| #include <memory> |
| #define WUFFS_BASE__HAVE_EQ_DELETE |
| #define WUFFS_BASE__HAVE_UNIQUE_PTR |
| #elif defined(__GNUC__) |
| #warning "Wuffs' C++ code expects -std=c++11 or later" |
| #endif |
| |
| extern "C" { |
| #endif |
| |
| // ---------------- Version |
| |
| // WUFFS_VERSION is the major.minor.patch version, as per https://semver.org/, |
| // as a uint64_t. The major number is the high 32 bits. The minor number is the |
| // middle 16 bits. The patch number is the low 16 bits. The pre-release label |
| // and build metadata are part of the string representation (such as |
| // "1.2.3-beta+456.20181231") but not the uint64_t representation. |
| // |
| // WUFFS_VERSION_PRE_RELEASE_LABEL (such as "", "beta" or "rc.1") being |
| // non-empty denotes a developer preview, not a release version, and has no |
| // backwards or forwards compatibility guarantees. |
| // |
| // WUFFS_VERSION_BUILD_METADATA_XXX, if non-zero, are the number of commits and |
| // the last commit date in the repository used to build this library. Within |
| // each major.minor branch, the commit count should increase monotonically. |
| // |
| // WUFFS_VERSION was overridden by "wuffs gen -version" based on revision |
| // 6a30c1ede0dc765fbbc443b2536b7691485be9fb committed on 2021-07-18. |
| #define WUFFS_VERSION 0x000030000 |
| #define WUFFS_VERSION_MAJOR 0 |
| #define WUFFS_VERSION_MINOR 3 |
| #define WUFFS_VERSION_PATCH 0 |
| #define WUFFS_VERSION_PRE_RELEASE_LABEL "beta.7" |
| #define WUFFS_VERSION_BUILD_METADATA_COMMIT_COUNT 3069 |
| #define WUFFS_VERSION_BUILD_METADATA_COMMIT_DATE 20210718 |
| #define WUFFS_VERSION_STRING "0.3.0-beta.7+3069.20210718" |
| |
| // ---------------- Configuration |
| |
| // Define WUFFS_CONFIG__AVOID_CPU_ARCH to avoid any code tied to a specific CPU |
| // architecture, such as SSE SIMD for the x86 CPU family. |
| #if defined(WUFFS_CONFIG__AVOID_CPU_ARCH) // (#if-chain ref AVOID_CPU_ARCH_0) |
| // No-op. |
| #else // (#if-chain ref AVOID_CPU_ARCH_0) |
| |
| // The "defined(__clang__)" isn't redundant. While vanilla clang defines |
| // __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. |
| #if defined(__GNUC__) || defined(__clang__) |
| #define WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET(arg) __attribute__((target(arg))) |
| #else |
| #define WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET(arg) |
| #endif // defined(__GNUC__) || defined(__clang__) |
| |
| #if defined(__GNUC__) // (#if-chain ref AVOID_CPU_ARCH_1) |
| |
| // To simplify Wuffs code, "cpu_arch >= arm_xxx" requires xxx but also |
| // unaligned little-endian load/stores. |
| #if defined(__ARM_FEATURE_UNALIGNED) && !defined(__native_client__) && \ |
| defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) |
| // Not all gcc versions define __ARM_ACLE, even if they support crc32 |
| // intrinsics. Look for __ARM_FEATURE_CRC32 instead. |
| #if defined(__ARM_FEATURE_CRC32) |
| #include <arm_acle.h> |
| #define WUFFS_BASE__CPU_ARCH__ARM_CRC32 |
| #endif // defined(__ARM_FEATURE_CRC32) |
| #if defined(__ARM_NEON) |
| #include <arm_neon.h> |
| #define WUFFS_BASE__CPU_ARCH__ARM_NEON |
| #endif // defined(__ARM_NEON) |
| #endif // defined(__ARM_FEATURE_UNALIGNED) etc |
| |
| // Similarly, "cpu_arch >= x86_sse42" requires SSE4.2 but also PCLMUL and |
| // POPCNT. This is checked at runtime via cpuid, not at compile time. |
| // |
| // Likewise, "cpu_arch >= x86_avx2" also requires PCLMUL, POPCNT and SSE4.2. |
| #if defined(__x86_64__) && !defined(__native_client__) |
| #include <cpuid.h> |
| #include <x86intrin.h> |
| #define WUFFS_BASE__CPU_ARCH__X86_64 |
| #endif // defined(__x86_64__) && !defined(__native_client__) |
| |
| #elif defined(_MSC_VER) // (#if-chain ref AVOID_CPU_ARCH_1) |
| |
| #if defined(_M_X64) |
| #if defined(__AVX__) || defined(__clang__) |
| |
| // We need <intrin.h> for the __cpuid function. |
| #include <intrin.h> |
| // That's not enough for X64 SIMD, with clang-cl, if we want to use |
| // "__attribute__((target(arg)))" without e.g. "/arch:AVX". |
| // |
| // Some web pages suggest that <immintrin.h> is all you need, as it pulls in |
| // the earlier SIMD families like SSE4.2, but that doesn't seem to work in |
| // practice, possibly for the same reason that just <intrin.h> doesn't work. |
| #include <immintrin.h> // AVX, AVX2, FMA, POPCNT |
| #include <nmmintrin.h> // SSE4.2 |
| #include <wmmintrin.h> // AES, PCLMUL |
| #define WUFFS_BASE__CPU_ARCH__X86_64 |
| |
| #else // defined(__AVX__) || defined(__clang__) |
| |
| // clang-cl (which defines both __clang__ and _MSC_VER) supports |
| // "__attribute__((target(arg)))". |
| // |
| // For MSVC's cl.exe (unlike clang or gcc), SIMD capability is a compile-time |
| // property of the source file (e.g. a /arch:AVX or -mavx compiler flag), not |
| // of individual functions (that can be conditionally selected at runtime). |
| #pragma message("Wuffs with MSVC+X64 needs /arch:AVX for best performance") |
| |
| #endif // defined(__AVX__) || defined(__clang__) |
| #endif // defined(_M_X64) |
| |
| #endif // (#if-chain ref AVOID_CPU_ARCH_1) |
| #endif // (#if-chain ref AVOID_CPU_ARCH_0) |
| |
| // -------- |
| |
| // Define WUFFS_CONFIG__STATIC_FUNCTIONS to make all of Wuffs' functions have |
| // static storage. The motivation is discussed in the "ALLOW STATIC |
| // IMPLEMENTATION" section of |
| // https://raw.githubusercontent.com/nothings/stb/master/docs/stb_howto.txt |
| #if defined(WUFFS_CONFIG__STATIC_FUNCTIONS) |
| #define WUFFS_BASE__MAYBE_STATIC static |
| #else |
| #define WUFFS_BASE__MAYBE_STATIC |
| #endif // defined(WUFFS_CONFIG__STATIC_FUNCTIONS) |
| |
| // ---------------- CPU Architecture |
| |
| static inline bool // |
| wuffs_base__cpu_arch__have_arm_crc32() { |
| #if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) |
| return true; |
| #else |
| return false; |
| #endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) |
| } |
| |
| static inline bool // |
| wuffs_base__cpu_arch__have_arm_neon() { |
| #if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) |
| return true; |
| #else |
| return false; |
| #endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) |
| } |
| |
| static inline bool // |
| wuffs_base__cpu_arch__have_x86_avx2() { |
| #if defined(WUFFS_BASE__CPU_ARCH__X86_64) |
| // GCC defines these macros but MSVC does not. |
| // - bit_AVX2 = (1 << 5) |
| const unsigned int avx2_ebx7 = 0x00000020; |
| // GCC defines these macros but MSVC does not. |
| // - bit_PCLMUL = (1 << 1) |
| // - bit_POPCNT = (1 << 23) |
| // - bit_SSE4_2 = (1 << 20) |
| const unsigned int avx2_ecx1 = 0x00900002; |
| |
| // clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__). |
| #if defined(__GNUC__) |
| unsigned int eax7 = 0; |
| unsigned int ebx7 = 0; |
| unsigned int ecx7 = 0; |
| unsigned int edx7 = 0; |
| if (__get_cpuid_count(7, 0, &eax7, &ebx7, &ecx7, &edx7) && |
| ((ebx7 & avx2_ebx7) == avx2_ebx7)) { |
| unsigned int eax1 = 0; |
| unsigned int ebx1 = 0; |
| unsigned int ecx1 = 0; |
| unsigned int edx1 = 0; |
| if (__get_cpuid(1, &eax1, &ebx1, &ecx1, &edx1) && |
| ((ecx1 & avx2_ecx1) == avx2_ecx1)) { |
| return true; |
| } |
| } |
| #elif defined(_MSC_VER) // defined(__GNUC__) |
| int x7[4]; |
| __cpuidex(x7, 7, 0); |
| if ((((unsigned int)(x7[1])) & avx2_ebx7) == avx2_ebx7) { |
| int x1[4]; |
| __cpuid(x1, 1); |
| if ((((unsigned int)(x1[2])) & avx2_ecx1) == avx2_ecx1) { |
| return true; |
| } |
| } |
| #else |
| #error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler" |
| #endif // defined(__GNUC__); defined(_MSC_VER) |
| #endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) |
| return false; |
| } |
| |
| static inline bool // |
| wuffs_base__cpu_arch__have_x86_bmi2() { |
| #if defined(WUFFS_BASE__CPU_ARCH__X86_64) |
| // GCC defines these macros but MSVC does not. |
| // - bit_BMI2 = (1 << 8) |
| const unsigned int bmi2_ebx7 = 0x00000100; |
| |
| // clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__). |
| #if defined(__GNUC__) |
| unsigned int eax7 = 0; |
| unsigned int ebx7 = 0; |
| unsigned int ecx7 = 0; |
| unsigned int edx7 = 0; |
| if (__get_cpuid_count(7, 0, &eax7, &ebx7, &ecx7, &edx7) && |
| ((ebx7 & bmi2_ebx7) == bmi2_ebx7)) { |
| return true; |
| } |
| #elif defined(_MSC_VER) // defined(__GNUC__) |
| int x7[4]; |
| __cpuidex(x7, 7, 0); |
| if ((((unsigned int)(x7[1])) & bmi2_ebx7) == bmi2_ebx7) { |
| return true; |
| } |
| #else |
| #error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler" |
| #endif // defined(__GNUC__); defined(_MSC_VER) |
| #endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) |
| return false; |
| } |
| |
| static inline bool // |
| wuffs_base__cpu_arch__have_x86_sse42() { |
| #if defined(WUFFS_BASE__CPU_ARCH__X86_64) |
| // GCC defines these macros but MSVC does not. |
| // - bit_PCLMUL = (1 << 1) |
| // - bit_POPCNT = (1 << 23) |
| // - bit_SSE4_2 = (1 << 20) |
| const unsigned int sse42_ecx1 = 0x00900002; |
| |
| // clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__). |
| #if defined(__GNUC__) |
| unsigned int eax1 = 0; |
| unsigned int ebx1 = 0; |
| unsigned int ecx1 = 0; |
| unsigned int edx1 = 0; |
| if (__get_cpuid(1, &eax1, &ebx1, &ecx1, &edx1) && |
| ((ecx1 & sse42_ecx1) == sse42_ecx1)) { |
| return true; |
| } |
| #elif defined(_MSC_VER) // defined(__GNUC__) |
| int x1[4]; |
| __cpuid(x1, 1); |
| if ((((unsigned int)(x1[2])) & sse42_ecx1) == sse42_ecx1) { |
| return true; |
| } |
| #else |
| #error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler" |
| #endif // defined(__GNUC__); defined(_MSC_VER) |
| #endif // defined(WUFFS_BASE__CPU_ARCH__X86_64) |
| return false; |
| } |
| |
| // ---------------- Fundamentals |
| |
| // Wuffs assumes that: |
| // - converting a uint32_t to a size_t will never overflow. |
| // - converting a size_t to a uint64_t will never overflow. |
| #if defined(__WORDSIZE) |
| #if (__WORDSIZE != 32) && (__WORDSIZE != 64) |
| #error "Wuffs requires a word size of either 32 or 64 bits" |
| #endif |
| #endif |
| |
| // Clang also defines "__GNUC__". |
| #if defined(__GNUC__) |
| #define WUFFS_BASE__POTENTIALLY_UNUSED __attribute__((unused)) |
| #define WUFFS_BASE__WARN_UNUSED_RESULT __attribute__((warn_unused_result)) |
| #else |
| #define WUFFS_BASE__POTENTIALLY_UNUSED |
| #define WUFFS_BASE__WARN_UNUSED_RESULT |
| #endif |
| |
| // -------- |
| |
| // Options (bitwise or'ed together) for wuffs_foo__bar__initialize functions. |
| |
| #define WUFFS_INITIALIZE__DEFAULT_OPTIONS ((uint32_t)0x00000000) |
| |
| // WUFFS_INITIALIZE__ALREADY_ZEROED means that the "self" receiver struct value |
| // has already been set to all zeroes. |
| #define WUFFS_INITIALIZE__ALREADY_ZEROED ((uint32_t)0x00000001) |
| |
| // WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED means that, absent |
| // WUFFS_INITIALIZE__ALREADY_ZEROED, only some of the "self" receiver struct |
| // value will be set to all zeroes. Internal buffers, which tend to be a large |
| // proportion of the struct's size, will be left uninitialized. Internal means |
| // that the buffer is contained by the receiver struct, as opposed to being |
| // passed as a separately allocated "work buffer". |
| // |
| // For more detail, see: |
| // https://github.com/google/wuffs/blob/main/doc/note/initialization.md |
| #define WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED \ |
| ((uint32_t)0x00000002) |
| |
| // -------- |
| |
| // wuffs_base__empty_struct is used when a Wuffs function returns an empty |
| // struct. In C, if a function f returns void, you can't say "x = f()", but in |
| // Wuffs, if a function g returns empty, you can say "y = g()". |
| typedef struct wuffs_base__empty_struct__struct { |
| // private_impl is a placeholder field. It isn't explicitly used, except that |
| // without it, the sizeof a struct with no fields can differ across C/C++ |
| // compilers, and it is undefined behavior in C99. For example, gcc says that |
| // the sizeof an empty struct is 0, and g++ says that it is 1. This leads to |
| // ABI incompatibility if a Wuffs .c file is processed by one compiler and |
| // its .h file with another compiler. |
| // |
| // Instead, we explicitly insert an otherwise unused field, so that the |
| // sizeof this struct is always 1. |
| uint8_t private_impl; |
| } wuffs_base__empty_struct; |
| |
| static inline wuffs_base__empty_struct // |
| wuffs_base__make_empty_struct() { |
| wuffs_base__empty_struct ret; |
| ret.private_impl = 0; |
| return ret; |
| } |
| |
| // wuffs_base__utility is a placeholder receiver type. It enables what Java |
| // calls static methods, as opposed to regular methods. |
| typedef struct wuffs_base__utility__struct { |
| // private_impl is a placeholder field. It isn't explicitly used, except that |
| // without it, the sizeof a struct with no fields can differ across C/C++ |
| // compilers, and it is undefined behavior in C99. For example, gcc says that |
| // the sizeof an empty struct is 0, and g++ says that it is 1. This leads to |
| // ABI incompatibility if a Wuffs .c file is processed by one compiler and |
| // its .h file with another compiler. |
| // |
| // Instead, we explicitly insert an otherwise unused field, so that the |
| // sizeof this struct is always 1. |
| uint8_t private_impl; |
| } wuffs_base__utility; |
| |
| typedef struct wuffs_base__vtable__struct { |
| const char* vtable_name; |
| const void* function_pointers; |
| } wuffs_base__vtable; |
| |
| // -------- |
| |
| // See https://github.com/google/wuffs/blob/main/doc/note/statuses.md |
| typedef struct wuffs_base__status__struct { |
| const char* repr; |
| |
| #ifdef __cplusplus |
| inline bool is_complete() const; |
| inline bool is_error() const; |
| inline bool is_note() const; |
| inline bool is_ok() const; |
| inline bool is_suspension() const; |
| inline const char* message() const; |
| #endif // __cplusplus |
| |
| } wuffs_base__status; |
| |
| extern const char wuffs_base__note__i_o_redirect[]; |
| extern const char wuffs_base__note__end_of_data[]; |
| extern const char wuffs_base__note__metadata_reported[]; |
| extern const char wuffs_base__suspension__even_more_information[]; |
| extern const char wuffs_base__suspension__mispositioned_read[]; |
| extern const char wuffs_base__suspension__mispositioned_write[]; |
| extern const char wuffs_base__suspension__short_read[]; |
| extern const char wuffs_base__suspension__short_write[]; |
| extern const char wuffs_base__error__bad_i_o_position[]; |
| extern const char wuffs_base__error__bad_argument_length_too_short[]; |
| extern const char wuffs_base__error__bad_argument[]; |
| extern const char wuffs_base__error__bad_call_sequence[]; |
| extern const char wuffs_base__error__bad_data[]; |
| extern const char wuffs_base__error__bad_receiver[]; |
| extern const char wuffs_base__error__bad_restart[]; |
| extern const char wuffs_base__error__bad_sizeof_receiver[]; |
| extern const char wuffs_base__error__bad_vtable[]; |
| extern const char wuffs_base__error__bad_workbuf_length[]; |
| extern const char wuffs_base__error__bad_wuffs_version[]; |
| extern const char wuffs_base__error__cannot_return_a_suspension[]; |
| extern const char wuffs_base__error__disabled_by_previous_error[]; |
| extern const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[]; |
| extern const char wuffs_base__error__initialize_not_called[]; |
| extern const char wuffs_base__error__interleaved_coroutine_calls[]; |
| extern const char wuffs_base__error__no_more_information[]; |
| extern const char wuffs_base__error__not_enough_data[]; |
| extern const char wuffs_base__error__out_of_bounds[]; |
| extern const char wuffs_base__error__unsupported_method[]; |
| extern const char wuffs_base__error__unsupported_option[]; |
| extern const char wuffs_base__error__unsupported_pixel_swizzler_option[]; |
| extern const char wuffs_base__error__too_much_data[]; |
| |
| static inline wuffs_base__status // |
| wuffs_base__make_status(const char* repr) { |
| wuffs_base__status z; |
| z.repr = repr; |
| return z; |
| } |
| |
| static inline bool // |
| wuffs_base__status__is_complete(const wuffs_base__status* z) { |
| return (z->repr == NULL) || ((*z->repr != '$') && (*z->repr != '#')); |
| } |
| |
| static inline bool // |
| wuffs_base__status__is_error(const wuffs_base__status* z) { |
| return z->repr && (*z->repr == '#'); |
| } |
| |
| static inline bool // |
| wuffs_base__status__is_note(const wuffs_base__status* z) { |
| return z->repr && (*z->repr != '$') && (*z->repr != '#'); |
| } |
| |
| static inline bool // |
| wuffs_base__status__is_ok(const wuffs_base__status* z) { |
| return z->repr == NULL; |
| } |
| |
| static inline bool // |
| wuffs_base__status__is_suspension(const wuffs_base__status* z) { |
| return z->repr && (*z->repr == '$'); |
| } |
| |
| // wuffs_base__status__message strips the leading '$', '#' or '@'. |
| static inline const char* // |
| wuffs_base__status__message(const wuffs_base__status* z) { |
| if (z->repr) { |
| if ((*z->repr == '$') || (*z->repr == '#') || (*z->repr == '@')) { |
| return z->repr + 1; |
| } |
| } |
| return z->repr; |
| } |
| |
| #ifdef __cplusplus |
| |
| inline bool // |
| wuffs_base__status::is_complete() const { |
| return wuffs_base__status__is_complete(this); |
| } |
| |
| inline bool // |
| wuffs_base__status::is_error() const { |
| return wuffs_base__status__is_error(this); |
| } |
| |
| inline bool // |
| wuffs_base__status::is_note() const { |
| return wuffs_base__status__is_note(this); |
| } |
| |
| inline bool // |
| wuffs_base__status::is_ok() const { |
| return wuffs_base__status__is_ok(this); |
| } |
| |
| inline bool // |
| wuffs_base__status::is_suspension() const { |
| return wuffs_base__status__is_suspension(this); |
| } |
| |
| inline const char* // |
| wuffs_base__status::message() const { |
| return wuffs_base__status__message(this); |
| } |
| |
| #endif // __cplusplus |
| |
| // -------- |
| |
| // WUFFS_BASE__RESULT is a result type: either a status (an error) or a value. |
| // |
| // A result with all fields NULL or zero is as valid as a zero-valued T. |
| #define WUFFS_BASE__RESULT(T) \ |
| struct { \ |
| wuffs_base__status status; \ |
| T value; \ |
| } |
| |
| typedef WUFFS_BASE__RESULT(double) wuffs_base__result_f64; |
| typedef WUFFS_BASE__RESULT(int64_t) wuffs_base__result_i64; |
| typedef WUFFS_BASE__RESULT(uint64_t) wuffs_base__result_u64; |
| |
| // -------- |
| |
| // wuffs_base__transform__output is the result of transforming from a src slice |
| // to a dst slice. |
| typedef struct wuffs_base__transform__output__struct { |
| wuffs_base__status status; |
| size_t num_dst; |
| size_t num_src; |
| } wuffs_base__transform__output; |
| |
| // -------- |
| |
| // FourCC constants. |
| |
| // Bitmap. |
| #define WUFFS_BASE__FOURCC__BMP 0x424D5020 |
| |
| // Brotli. |
| #define WUFFS_BASE__FOURCC__BRTL 0x4252544C |
| |
| // Bzip2. |
| #define WUFFS_BASE__FOURCC__BZ2 0x425A3220 |
| |
| // Concise Binary Object Representation. |
| #define WUFFS_BASE__FOURCC__CBOR 0x43424F52 |
| |
| // Cascading Style Sheets. |
| #define WUFFS_BASE__FOURCC__CSS 0x43535320 |
| |
| // Encapsulated PostScript. |
| #define WUFFS_BASE__FOURCC__EPS 0x45505320 |
| |
| // Free Lossless Audio Codec. |
| #define WUFFS_BASE__FOURCC__FLAC 0x464C4143 |
| |
| // Graphics Interchange Format. |
| #define WUFFS_BASE__FOURCC__GIF 0x47494620 |
| |
| // GNU Zip. |
| #define WUFFS_BASE__FOURCC__GZ 0x475A2020 |
| |
| // High Efficiency Image File. |
| #define WUFFS_BASE__FOURCC__HEIF 0x48454946 |
| |
| // Hypertext Markup Language. |
| #define WUFFS_BASE__FOURCC__HTML 0x48544D4C |
| |
| // International Color Consortium Profile. |
| #define WUFFS_BASE__FOURCC__ICCP 0x49434350 |
| |
| // Icon. |
| #define WUFFS_BASE__FOURCC__ICO 0x49434F20 |
| |
| // Icon Vector Graphics. |
| #define WUFFS_BASE__FOURCC__ICVG 0x49435647 |
| |
| // Initialization. |
| #define WUFFS_BASE__FOURCC__INI 0x494E4920 |
| |
| // Joint Photographic Experts Group. |
| #define WUFFS_BASE__FOURCC__JPEG 0x4A504547 |
| |
| // JavaScript. |
| #define WUFFS_BASE__FOURCC__JS 0x4A532020 |
| |
| // JavaScript Object Notation. |
| #define WUFFS_BASE__FOURCC__JSON 0x4A534F4E |
| |
| // JSON With Commas and Comments. |
| #define WUFFS_BASE__FOURCC__JWCC 0x4A574343 |
| |
| // Lempel–Ziv 4. |
| #define WUFFS_BASE__FOURCC__LZ4 0x4C5A3420 |
| |
| // Markdown. |
| #define WUFFS_BASE__FOURCC__MD 0x4D442020 |
| |
| // MPEG-1 Audio Layer III. |
| #define WUFFS_BASE__FOURCC__MP3 0x4D503320 |
| |
| // Naive Image. |
| #define WUFFS_BASE__FOURCC__NIE 0x4E494520 |
| |
| // Open Type Format. |
| #define WUFFS_BASE__FOURCC__OTF 0x4F544620 |
| |
| // Portable Document Format. |
| #define WUFFS_BASE__FOURCC__PDF 0x50444620 |
| |
| // Portable Network Graphics. |
| #define WUFFS_BASE__FOURCC__PNG 0x504E4720 |
| |
| // Portable Anymap. |
| #define WUFFS_BASE__FOURCC__PNM 0x504E4D20 |
| |
| // PostScript. |
| #define WUFFS_BASE__FOURCC__PS 0x50532020 |
| |
| // Random Access Compression. |
| #define WUFFS_BASE__FOURCC__RAC 0x52414320 |
| |
| // Raw. |
| #define WUFFS_BASE__FOURCC__RAW 0x52415720 |
| |
| // Resource Interchange File Format. |
| #define WUFFS_BASE__FOURCC__RIFF 0x52494646 |
| |
| // Riegeli Records. |
| #define WUFFS_BASE__FOURCC__RIGL 0x5249474C |
| |
| // Snappy. |
| #define WUFFS_BASE__FOURCC__SNPY 0x534E5059 |
| |
| // Scalable Vector Graphics. |
| #define WUFFS_BASE__FOURCC__SVG 0x53564720 |
| |
| // Tape Archive. |
| #define WUFFS_BASE__FOURCC__TAR 0x54415220 |
| |
| // Tagged Image File Format. |
| #define WUFFS_BASE__FOURCC__TIFF 0x54494646 |
| |
| // Tom's Obvious Minimal Language. |
| #define WUFFS_BASE__FOURCC__TOML 0x544F4D4C |
| |
| // Waveform. |
| #define WUFFS_BASE__FOURCC__WAVE 0x57415645 |
| |
| // Wireless Bitmap. |
| #define WUFFS_BASE__FOURCC__WBMP 0x57424D50 |
| |
| // Web Open Font Format. |
| #define WUFFS_BASE__FOURCC__WOFF 0x574F4646 |
| |
| // Web Picture (VP8). |
| #define WUFFS_BASE__FOURCC__WP8 0x57503820 |
| |
| // Web Picture (VP8 Lossless). |
| #define WUFFS_BASE__FOURCC__WP8L 0x5750384C |
| |
| // Extensible Markup Language. |
| #define WUFFS_BASE__FOURCC__XML 0x584D4C20 |
| |
| // Extensible Metadata Platform. |
| #define WUFFS_BASE__FOURCC__XMP 0x584D5020 |
| |
| // Xz. |
| #define WUFFS_BASE__FOURCC__XZ 0x585A2020 |
| |
| // Zip. |
| #define WUFFS_BASE__FOURCC__ZIP 0x5A495020 |
| |
| // Zlib. |
| #define WUFFS_BASE__FOURCC__ZLIB 0x5A4C4942 |
| |
| // Zstandard. |
| #define WUFFS_BASE__FOURCC__ZSTD 0x5A535444 |
| |
| // -------- |
| |
| // Quirks. |
| |
| #define WUFFS_BASE__QUIRK_IGNORE_CHECKSUM 1 |
| |
| // -------- |
| |
| // Flicks are a unit of time. One flick (frame-tick) is 1 / 705_600_000 of a |
| // second. See https://github.com/OculusVR/Flicks |
| typedef int64_t wuffs_base__flicks; |
| |
| #define WUFFS_BASE__FLICKS_PER_SECOND ((uint64_t)705600000) |
| #define WUFFS_BASE__FLICKS_PER_MILLISECOND ((uint64_t)705600) |
| |
| // ---------------- Numeric Types |
| |
| // The helpers below are functions, instead of macros, because their arguments |
| // can be an expression that we shouldn't evaluate more than once. |
| // |
| // They are static, so that linking multiple wuffs .o files won't complain about |
| // duplicate function definitions. |
| // |
| // They are explicitly marked inline, even if modern compilers don't use the |
| // inline attribute to guide optimizations such as inlining, to avoid the |
| // -Wunused-function warning, and we like to compile with -Wall -Werror. |
| |
| static inline int8_t // |
| wuffs_base__i8__min(int8_t x, int8_t y) { |
| return x < y ? x : y; |
| } |
| |
| static inline int8_t // |
| wuffs_base__i8__max(int8_t x, int8_t y) { |
| return x > y ? x : y; |
| } |
| |
| static inline int16_t // |
| wuffs_base__i16__min(int16_t x, int16_t y) { |
| return x < y ? x : y; |
| } |
| |
| static inline int16_t // |
| wuffs_base__i16__max(int16_t x, int16_t y) { |
| return x > y ? x : y; |
| } |
| |
| static inline int32_t // |
| wuffs_base__i32__min(int32_t x, int32_t y) { |
| return x < y ? x : y; |
| } |
| |
| static inline int32_t // |
| wuffs_base__i32__max(int32_t x, int32_t y) { |
| return x > y ? x : y; |
| } |
| |
| static inline int64_t // |
| wuffs_base__i64__min(int64_t x, int64_t y) { |
| return x < y ? x : y; |
| } |
| |
| static inline int64_t // |
| wuffs_base__i64__max(int64_t x, int64_t y) { |
| return x > y ? x : y; |
| } |
| |
| static inline uint8_t // |
| wuffs_base__u8__min(uint8_t x, uint8_t y) { |
| return x < y ? x : y; |
| } |
| |
| static inline uint8_t // |
| wuffs_base__u8__max(uint8_t x, uint8_t y) { |
| return x > y ? x : y; |
| } |
| |
| static inline uint16_t // |
| wuffs_base__u16__min(uint16_t x, uint16_t y) { |
| return x < y ? x : y; |
| } |
| |
| static inline uint16_t // |
| wuffs_base__u16__max(uint16_t x, uint16_t y) { |
| return x > y ? x : y; |
| } |
| |
| static inline uint32_t // |
| wuffs_base__u32__min(uint32_t x, uint32_t y) { |
| return x < y ? x : y; |
| } |
| |
| static inline uint32_t // |
| wuffs_base__u32__max(uint32_t x, uint32_t y) { |
| return x > y ? x : y; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__u64__min(uint64_t x, uint64_t y) { |
| return x < y ? x : y; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__u64__max(uint64_t x, uint64_t y) { |
| return x > y ? x : y; |
| } |
| |
| // -------- |
| |
| static inline uint8_t // |
| wuffs_base__u8__rotate_left(uint8_t x, uint32_t n) { |
| n &= 7; |
| return ((uint8_t)(x << n)) | ((uint8_t)(x >> (8 - n))); |
| } |
| |
| static inline uint8_t // |
| wuffs_base__u8__rotate_right(uint8_t x, uint32_t n) { |
| n &= 7; |
| return ((uint8_t)(x >> n)) | ((uint8_t)(x << (8 - n))); |
| } |
| |
| static inline uint16_t // |
| wuffs_base__u16__rotate_left(uint16_t x, uint32_t n) { |
| n &= 15; |
| return ((uint16_t)(x << n)) | ((uint16_t)(x >> (16 - n))); |
| } |
| |
| static inline uint16_t // |
| wuffs_base__u16__rotate_right(uint16_t x, uint32_t n) { |
| n &= 15; |
| return ((uint16_t)(x >> n)) | ((uint16_t)(x << (16 - n))); |
| } |
| |
| static inline uint32_t // |
| wuffs_base__u32__rotate_left(uint32_t x, uint32_t n) { |
| n &= 31; |
| return ((uint32_t)(x << n)) | ((uint32_t)(x >> (32 - n))); |
| } |
| |
| static inline uint32_t // |
| wuffs_base__u32__rotate_right(uint32_t x, uint32_t n) { |
| n &= 31; |
| return ((uint32_t)(x >> n)) | ((uint32_t)(x << (32 - n))); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__u64__rotate_left(uint64_t x, uint32_t n) { |
| n &= 63; |
| return ((uint64_t)(x << n)) | ((uint64_t)(x >> (64 - n))); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__u64__rotate_right(uint64_t x, uint32_t n) { |
| n &= 63; |
| return ((uint64_t)(x >> n)) | ((uint64_t)(x << (64 - n))); |
| } |
| |
| // -------- |
| |
| // Saturating arithmetic (sat_add, sat_sub) branchless bit-twiddling algorithms |
| // are per https://locklessinc.com/articles/sat_arithmetic/ |
| // |
| // It is important that the underlying types are unsigned integers, as signed |
| // integer arithmetic overflow is undefined behavior in C. |
| |
| static inline uint8_t // |
| wuffs_base__u8__sat_add(uint8_t x, uint8_t y) { |
| uint8_t res = (uint8_t)(x + y); |
| res |= (uint8_t)(-(res < x)); |
| return res; |
| } |
| |
| static inline uint8_t // |
| wuffs_base__u8__sat_sub(uint8_t x, uint8_t y) { |
| uint8_t res = (uint8_t)(x - y); |
| res &= (uint8_t)(-(res <= x)); |
| return res; |
| } |
| |
| static inline uint16_t // |
| wuffs_base__u16__sat_add(uint16_t x, uint16_t y) { |
| uint16_t res = (uint16_t)(x + y); |
| res |= (uint16_t)(-(res < x)); |
| return res; |
| } |
| |
| static inline uint16_t // |
| wuffs_base__u16__sat_sub(uint16_t x, uint16_t y) { |
| uint16_t res = (uint16_t)(x - y); |
| res &= (uint16_t)(-(res <= x)); |
| return res; |
| } |
| |
| static inline uint32_t // |
| wuffs_base__u32__sat_add(uint32_t x, uint32_t y) { |
| uint32_t res = (uint32_t)(x + y); |
| res |= (uint32_t)(-(res < x)); |
| return res; |
| } |
| |
| static inline uint32_t // |
| wuffs_base__u32__sat_sub(uint32_t x, uint32_t y) { |
| uint32_t res = (uint32_t)(x - y); |
| res &= (uint32_t)(-(res <= x)); |
| return res; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__u64__sat_add(uint64_t x, uint64_t y) { |
| uint64_t res = (uint64_t)(x + y); |
| res |= (uint64_t)(-(res < x)); |
| return res; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__u64__sat_sub(uint64_t x, uint64_t y) { |
| uint64_t res = (uint64_t)(x - y); |
| res &= (uint64_t)(-(res <= x)); |
| return res; |
| } |
| |
| // -------- |
| |
| typedef struct wuffs_base__multiply_u64__output__struct { |
| uint64_t lo; |
| uint64_t hi; |
| } wuffs_base__multiply_u64__output; |
| |
| // wuffs_base__multiply_u64 returns x*y as a 128-bit value. |
| // |
| // The maximum inclusive output hi_lo is 0xFFFFFFFFFFFFFFFE_0000000000000001. |
| static inline wuffs_base__multiply_u64__output // |
| wuffs_base__multiply_u64(uint64_t x, uint64_t y) { |
| #if defined(__SIZEOF_INT128__) |
| __uint128_t z = ((__uint128_t)x) * ((__uint128_t)y); |
| wuffs_base__multiply_u64__output o; |
| o.lo = ((uint64_t)(z)); |
| o.hi = ((uint64_t)(z >> 64)); |
| return o; |
| #else |
| // TODO: consider using the _mul128 intrinsic if defined(_MSC_VER). |
| uint64_t x0 = x & 0xFFFFFFFF; |
| uint64_t x1 = x >> 32; |
| uint64_t y0 = y & 0xFFFFFFFF; |
| uint64_t y1 = y >> 32; |
| uint64_t w0 = x0 * y0; |
| uint64_t t = (x1 * y0) + (w0 >> 32); |
| uint64_t w1 = t & 0xFFFFFFFF; |
| uint64_t w2 = t >> 32; |
| w1 += x0 * y1; |
| wuffs_base__multiply_u64__output o; |
| o.lo = x * y; |
| o.hi = (x1 * y1) + w2 + (w1 >> 32); |
| return o; |
| #endif |
| } |
| |
| // -------- |
| |
| #if defined(__GNUC__) && (__SIZEOF_LONG__ == 8) |
| |
| static inline uint32_t // |
| wuffs_base__count_leading_zeroes_u64(uint64_t u) { |
| return u ? ((uint32_t)(__builtin_clzl(u))) : 64u; |
| } |
| |
| #else |
| // TODO: consider using the _BitScanReverse intrinsic if defined(_MSC_VER). |
| |
| static inline uint32_t // |
| wuffs_base__count_leading_zeroes_u64(uint64_t u) { |
| if (u == 0) { |
| return 64; |
| } |
| |
| uint32_t n = 0; |
| if ((u >> 32) == 0) { |
| n |= 32; |
| u <<= 32; |
| } |
| if ((u >> 48) == 0) { |
| n |= 16; |
| u <<= 16; |
| } |
| if ((u >> 56) == 0) { |
| n |= 8; |
| u <<= 8; |
| } |
| if ((u >> 60) == 0) { |
| n |= 4; |
| u <<= 4; |
| } |
| if ((u >> 62) == 0) { |
| n |= 2; |
| u <<= 2; |
| } |
| if ((u >> 63) == 0) { |
| n |= 1; |
| u <<= 1; |
| } |
| return n; |
| } |
| |
| #endif // defined(__GNUC__) && (__SIZEOF_LONG__ == 8) |
| |
| // -------- |
| |
| #define wuffs_base__peek_u8be__no_bounds_check \ |
| wuffs_base__peek_u8__no_bounds_check |
| #define wuffs_base__peek_u8le__no_bounds_check \ |
| wuffs_base__peek_u8__no_bounds_check |
| |
| static inline uint8_t // |
| wuffs_base__peek_u8__no_bounds_check(const uint8_t* p) { |
| return p[0]; |
| } |
| |
| static inline uint16_t // |
| wuffs_base__peek_u16be__no_bounds_check(const uint8_t* p) { |
| return (uint16_t)(((uint16_t)(p[0]) << 8) | ((uint16_t)(p[1]) << 0)); |
| } |
| |
| static inline uint16_t // |
| wuffs_base__peek_u16le__no_bounds_check(const uint8_t* p) { |
| return (uint16_t)(((uint16_t)(p[0]) << 0) | ((uint16_t)(p[1]) << 8)); |
| } |
| |
| static inline uint32_t // |
| wuffs_base__peek_u24be__no_bounds_check(const uint8_t* p) { |
| return ((uint32_t)(p[0]) << 16) | ((uint32_t)(p[1]) << 8) | |
| ((uint32_t)(p[2]) << 0); |
| } |
| |
| static inline uint32_t // |
| wuffs_base__peek_u24le__no_bounds_check(const uint8_t* p) { |
| return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) | |
| ((uint32_t)(p[2]) << 16); |
| } |
| |
| static inline uint32_t // |
| wuffs_base__peek_u32be__no_bounds_check(const uint8_t* p) { |
| return ((uint32_t)(p[0]) << 24) | ((uint32_t)(p[1]) << 16) | |
| ((uint32_t)(p[2]) << 8) | ((uint32_t)(p[3]) << 0); |
| } |
| |
| static inline uint32_t // |
| wuffs_base__peek_u32le__no_bounds_check(const uint8_t* p) { |
| return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) | |
| ((uint32_t)(p[2]) << 16) | ((uint32_t)(p[3]) << 24); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__peek_u40be__no_bounds_check(const uint8_t* p) { |
| return ((uint64_t)(p[0]) << 32) | ((uint64_t)(p[1]) << 24) | |
| ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 8) | |
| ((uint64_t)(p[4]) << 0); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__peek_u40le__no_bounds_check(const uint8_t* p) { |
| return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | |
| ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | |
| ((uint64_t)(p[4]) << 32); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__peek_u48be__no_bounds_check(const uint8_t* p) { |
| return ((uint64_t)(p[0]) << 40) | ((uint64_t)(p[1]) << 32) | |
| ((uint64_t)(p[2]) << 24) | ((uint64_t)(p[3]) << 16) | |
| ((uint64_t)(p[4]) << 8) | ((uint64_t)(p[5]) << 0); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__peek_u48le__no_bounds_check(const uint8_t* p) { |
| return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | |
| ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | |
| ((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__peek_u56be__no_bounds_check(const uint8_t* p) { |
| return ((uint64_t)(p[0]) << 48) | ((uint64_t)(p[1]) << 40) | |
| ((uint64_t)(p[2]) << 32) | ((uint64_t)(p[3]) << 24) | |
| ((uint64_t)(p[4]) << 16) | ((uint64_t)(p[5]) << 8) | |
| ((uint64_t)(p[6]) << 0); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__peek_u56le__no_bounds_check(const uint8_t* p) { |
| return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | |
| ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | |
| ((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40) | |
| ((uint64_t)(p[6]) << 48); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__peek_u64be__no_bounds_check(const uint8_t* p) { |
| return ((uint64_t)(p[0]) << 56) | ((uint64_t)(p[1]) << 48) | |
| ((uint64_t)(p[2]) << 40) | ((uint64_t)(p[3]) << 32) | |
| ((uint64_t)(p[4]) << 24) | ((uint64_t)(p[5]) << 16) | |
| ((uint64_t)(p[6]) << 8) | ((uint64_t)(p[7]) << 0); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__peek_u64le__no_bounds_check(const uint8_t* p) { |
| return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | |
| ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | |
| ((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40) | |
| ((uint64_t)(p[6]) << 48) | ((uint64_t)(p[7]) << 56); |
| } |
| |
| // -------- |
| |
| #define wuffs_base__poke_u8be__no_bounds_check \ |
| wuffs_base__poke_u8__no_bounds_check |
| #define wuffs_base__poke_u8le__no_bounds_check \ |
| wuffs_base__poke_u8__no_bounds_check |
| |
| static inline void // |
| wuffs_base__poke_u8__no_bounds_check(uint8_t* p, uint8_t x) { |
| p[0] = x; |
| } |
| |
| static inline void // |
| wuffs_base__poke_u16be__no_bounds_check(uint8_t* p, uint16_t x) { |
| p[0] = (uint8_t)(x >> 8); |
| p[1] = (uint8_t)(x >> 0); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u16le__no_bounds_check(uint8_t* p, uint16_t x) { |
| #if defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__) |
| // This seems to perform better on gcc 10 (but not clang 9). Clang also |
| // defines "__GNUC__". |
| memcpy(p, &x, 2); |
| #else |
| p[0] = (uint8_t)(x >> 0); |
| p[1] = (uint8_t)(x >> 8); |
| #endif |
| } |
| |
| static inline void // |
| wuffs_base__poke_u24be__no_bounds_check(uint8_t* p, uint32_t x) { |
| p[0] = (uint8_t)(x >> 16); |
| p[1] = (uint8_t)(x >> 8); |
| p[2] = (uint8_t)(x >> 0); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u24le__no_bounds_check(uint8_t* p, uint32_t x) { |
| p[0] = (uint8_t)(x >> 0); |
| p[1] = (uint8_t)(x >> 8); |
| p[2] = (uint8_t)(x >> 16); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u32be__no_bounds_check(uint8_t* p, uint32_t x) { |
| p[0] = (uint8_t)(x >> 24); |
| p[1] = (uint8_t)(x >> 16); |
| p[2] = (uint8_t)(x >> 8); |
| p[3] = (uint8_t)(x >> 0); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u32le__no_bounds_check(uint8_t* p, uint32_t x) { |
| #if defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__) |
| // This seems to perform better on gcc 10 (but not clang 9). Clang also |
| // defines "__GNUC__". |
| memcpy(p, &x, 4); |
| #else |
| p[0] = (uint8_t)(x >> 0); |
| p[1] = (uint8_t)(x >> 8); |
| p[2] = (uint8_t)(x >> 16); |
| p[3] = (uint8_t)(x >> 24); |
| #endif |
| } |
| |
| static inline void // |
| wuffs_base__poke_u40be__no_bounds_check(uint8_t* p, uint64_t x) { |
| p[0] = (uint8_t)(x >> 32); |
| p[1] = (uint8_t)(x >> 24); |
| p[2] = (uint8_t)(x >> 16); |
| p[3] = (uint8_t)(x >> 8); |
| p[4] = (uint8_t)(x >> 0); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u40le__no_bounds_check(uint8_t* p, uint64_t x) { |
| p[0] = (uint8_t)(x >> 0); |
| p[1] = (uint8_t)(x >> 8); |
| p[2] = (uint8_t)(x >> 16); |
| p[3] = (uint8_t)(x >> 24); |
| p[4] = (uint8_t)(x >> 32); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u48be__no_bounds_check(uint8_t* p, uint64_t x) { |
| p[0] = (uint8_t)(x >> 40); |
| p[1] = (uint8_t)(x >> 32); |
| p[2] = (uint8_t)(x >> 24); |
| p[3] = (uint8_t)(x >> 16); |
| p[4] = (uint8_t)(x >> 8); |
| p[5] = (uint8_t)(x >> 0); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u48le__no_bounds_check(uint8_t* p, uint64_t x) { |
| p[0] = (uint8_t)(x >> 0); |
| p[1] = (uint8_t)(x >> 8); |
| p[2] = (uint8_t)(x >> 16); |
| p[3] = (uint8_t)(x >> 24); |
| p[4] = (uint8_t)(x >> 32); |
| p[5] = (uint8_t)(x >> 40); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u56be__no_bounds_check(uint8_t* p, uint64_t x) { |
| p[0] = (uint8_t)(x >> 48); |
| p[1] = (uint8_t)(x >> 40); |
| p[2] = (uint8_t)(x >> 32); |
| p[3] = (uint8_t)(x >> 24); |
| p[4] = (uint8_t)(x >> 16); |
| p[5] = (uint8_t)(x >> 8); |
| p[6] = (uint8_t)(x >> 0); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u56le__no_bounds_check(uint8_t* p, uint64_t x) { |
| p[0] = (uint8_t)(x >> 0); |
| p[1] = (uint8_t)(x >> 8); |
| p[2] = (uint8_t)(x >> 16); |
| p[3] = (uint8_t)(x >> 24); |
| p[4] = (uint8_t)(x >> 32); |
| p[5] = (uint8_t)(x >> 40); |
| p[6] = (uint8_t)(x >> 48); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u64be__no_bounds_check(uint8_t* p, uint64_t x) { |
| p[0] = (uint8_t)(x >> 56); |
| p[1] = (uint8_t)(x >> 48); |
| p[2] = (uint8_t)(x >> 40); |
| p[3] = (uint8_t)(x >> 32); |
| p[4] = (uint8_t)(x >> 24); |
| p[5] = (uint8_t)(x >> 16); |
| p[6] = (uint8_t)(x >> 8); |
| p[7] = (uint8_t)(x >> 0); |
| } |
| |
| static inline void // |
| wuffs_base__poke_u64le__no_bounds_check(uint8_t* p, uint64_t x) { |
| #if defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__) |
| // This seems to perform better on gcc 10 (but not clang 9). Clang also |
| // defines "__GNUC__". |
| memcpy(p, &x, 8); |
| #else |
| p[0] = (uint8_t)(x >> 0); |
| p[1] = (uint8_t)(x >> 8); |
| p[2] = (uint8_t)(x >> 16); |
| p[3] = (uint8_t)(x >> 24); |
| p[4] = (uint8_t)(x >> 32); |
| p[5] = (uint8_t)(x >> 40); |
| p[6] = (uint8_t)(x >> 48); |
| p[7] = (uint8_t)(x >> 56); |
| #endif |
| } |
| |
| // -------- |
| |
| // Load and Store functions are deprecated. Use Peek and Poke instead. |
| |
| #define wuffs_base__load_u8__no_bounds_check \ |
| wuffs_base__peek_u8__no_bounds_check |
| #define wuffs_base__load_u16be__no_bounds_check \ |
| wuffs_base__peek_u16be__no_bounds_check |
| #define wuffs_base__load_u16le__no_bounds_check \ |
| wuffs_base__peek_u16le__no_bounds_check |
| #define wuffs_base__load_u24be__no_bounds_check \ |
| wuffs_base__peek_u24be__no_bounds_check |
| #define wuffs_base__load_u24le__no_bounds_check \ |
| wuffs_base__peek_u24le__no_bounds_check |
| #define wuffs_base__load_u32be__no_bounds_check \ |
| wuffs_base__peek_u32be__no_bounds_check |
| #define wuffs_base__load_u32le__no_bounds_check \ |
| wuffs_base__peek_u32le__no_bounds_check |
| #define wuffs_base__load_u40be__no_bounds_check \ |
| wuffs_base__peek_u40be__no_bounds_check |
| #define wuffs_base__load_u40le__no_bounds_check \ |
| wuffs_base__peek_u40le__no_bounds_check |
| #define wuffs_base__load_u48be__no_bounds_check \ |
| wuffs_base__peek_u48be__no_bounds_check |
| #define wuffs_base__load_u48le__no_bounds_check \ |
| wuffs_base__peek_u48le__no_bounds_check |
| #define wuffs_base__load_u56be__no_bounds_check \ |
| wuffs_base__peek_u56be__no_bounds_check |
| #define wuffs_base__load_u56le__no_bounds_check \ |
| wuffs_base__peek_u56le__no_bounds_check |
| #define wuffs_base__load_u64be__no_bounds_check \ |
| wuffs_base__peek_u64be__no_bounds_check |
| #define wuffs_base__load_u64le__no_bounds_check \ |
| wuffs_base__peek_u64le__no_bounds_check |
| |
| #define wuffs_base__store_u8__no_bounds_check \ |
| wuffs_base__poke_u8__no_bounds_check |
| #define wuffs_base__store_u16be__no_bounds_check \ |
| wuffs_base__poke_u16be__no_bounds_check |
| #define wuffs_base__store_u16le__no_bounds_check \ |
| wuffs_base__poke_u16le__no_bounds_check |
| #define wuffs_base__store_u24be__no_bounds_check \ |
| wuffs_base__poke_u24be__no_bounds_check |
| #define wuffs_base__store_u24le__no_bounds_check \ |
| wuffs_base__poke_u24le__no_bounds_check |
| #define wuffs_base__store_u32be__no_bounds_check \ |
| wuffs_base__poke_u32be__no_bounds_check |
| #define wuffs_base__store_u32le__no_bounds_check \ |
| wuffs_base__poke_u32le__no_bounds_check |
| #define wuffs_base__store_u40be__no_bounds_check \ |
| wuffs_base__poke_u40be__no_bounds_check |
| #define wuffs_base__store_u40le__no_bounds_check \ |
| wuffs_base__poke_u40le__no_bounds_check |
| #define wuffs_base__store_u48be__no_bounds_check \ |
| wuffs_base__poke_u48be__no_bounds_check |
| #define wuffs_base__store_u48le__no_bounds_check \ |
| wuffs_base__poke_u48le__no_bounds_check |
| #define wuffs_base__store_u56be__no_bounds_check \ |
| wuffs_base__poke_u56be__no_bounds_check |
| #define wuffs_base__store_u56le__no_bounds_check \ |
| wuffs_base__poke_u56le__no_bounds_check |
| #define wuffs_base__store_u64be__no_bounds_check \ |
| wuffs_base__poke_u64be__no_bounds_check |
| #define wuffs_base__store_u64le__no_bounds_check \ |
| wuffs_base__poke_u64le__no_bounds_check |
| |
| // ---------------- Slices and Tables |
| |
| // WUFFS_BASE__SLICE is a 1-dimensional buffer. |
| // |
| // len measures a number of elements, not necessarily a size in bytes. |
| // |
| // A value with all fields NULL or zero is a valid, empty slice. |
| #define WUFFS_BASE__SLICE(T) \ |
| struct { \ |
| T* ptr; \ |
| size_t len; \ |
| } |
| |
| // WUFFS_BASE__TABLE is a 2-dimensional buffer. |
| // |
| // width, height and stride measure a number of elements, not necessarily a |
| // size in bytes. |
| // |
| // A value with all fields NULL or zero is a valid, empty table. |
| #define WUFFS_BASE__TABLE(T) \ |
| struct { \ |
| T* ptr; \ |
| size_t width; \ |
| size_t height; \ |
| size_t stride; \ |
| } |
| |
| typedef WUFFS_BASE__SLICE(uint8_t) wuffs_base__slice_u8; |
| typedef WUFFS_BASE__SLICE(uint16_t) wuffs_base__slice_u16; |
| typedef WUFFS_BASE__SLICE(uint32_t) wuffs_base__slice_u32; |
| typedef WUFFS_BASE__SLICE(uint64_t) wuffs_base__slice_u64; |
| |
| typedef WUFFS_BASE__TABLE(uint8_t) wuffs_base__table_u8; |
| typedef WUFFS_BASE__TABLE(uint16_t) wuffs_base__table_u16; |
| typedef WUFFS_BASE__TABLE(uint32_t) wuffs_base__table_u32; |
| typedef WUFFS_BASE__TABLE(uint64_t) wuffs_base__table_u64; |
| |
| static inline wuffs_base__slice_u8 // |
| wuffs_base__make_slice_u8(uint8_t* ptr, size_t len) { |
| wuffs_base__slice_u8 ret; |
| ret.ptr = ptr; |
| ret.len = len; |
| return ret; |
| } |
| |
| static inline wuffs_base__slice_u16 // |
| wuffs_base__make_slice_u16(uint16_t* ptr, size_t len) { |
| wuffs_base__slice_u16 ret; |
| ret.ptr = ptr; |
| ret.len = len; |
| return ret; |
| } |
| |
| static inline wuffs_base__slice_u32 // |
| wuffs_base__make_slice_u32(uint32_t* ptr, size_t len) { |
| wuffs_base__slice_u32 ret; |
| ret.ptr = ptr; |
| ret.len = len; |
| return ret; |
| } |
| |
| static inline wuffs_base__slice_u64 // |
| wuffs_base__make_slice_u64(uint64_t* ptr, size_t len) { |
| wuffs_base__slice_u64 ret; |
| ret.ptr = ptr; |
| ret.len = len; |
| return ret; |
| } |
| |
| static inline wuffs_base__slice_u8 // |
| wuffs_base__empty_slice_u8() { |
| wuffs_base__slice_u8 ret; |
| ret.ptr = NULL; |
| ret.len = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__slice_u16 // |
| wuffs_base__empty_slice_u16() { |
| wuffs_base__slice_u16 ret; |
| ret.ptr = NULL; |
| ret.len = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__slice_u32 // |
| wuffs_base__empty_slice_u32() { |
| wuffs_base__slice_u32 ret; |
| ret.ptr = NULL; |
| ret.len = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__slice_u64 // |
| wuffs_base__empty_slice_u64() { |
| wuffs_base__slice_u64 ret; |
| ret.ptr = NULL; |
| ret.len = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__table_u8 // |
| wuffs_base__make_table_u8(uint8_t* ptr, |
| size_t width, |
| size_t height, |
| size_t stride) { |
| wuffs_base__table_u8 ret; |
| ret.ptr = ptr; |
| ret.width = width; |
| ret.height = height; |
| ret.stride = stride; |
| return ret; |
| } |
| |
| static inline wuffs_base__table_u16 // |
| wuffs_base__make_table_u16(uint16_t* ptr, |
| size_t width, |
| size_t height, |
| size_t stride) { |
| wuffs_base__table_u16 ret; |
| ret.ptr = ptr; |
| ret.width = width; |
| ret.height = height; |
| ret.stride = stride; |
| return ret; |
| } |
| |
| static inline wuffs_base__table_u32 // |
| wuffs_base__make_table_u32(uint32_t* ptr, |
| size_t width, |
| size_t height, |
| size_t stride) { |
| wuffs_base__table_u32 ret; |
| ret.ptr = ptr; |
| ret.width = width; |
| ret.height = height; |
| ret.stride = stride; |
| return ret; |
| } |
| |
| static inline wuffs_base__table_u64 // |
| wuffs_base__make_table_u64(uint64_t* ptr, |
| size_t width, |
| size_t height, |
| size_t stride) { |
| wuffs_base__table_u64 ret; |
| ret.ptr = ptr; |
| ret.width = width; |
| ret.height = height; |
| ret.stride = stride; |
| return ret; |
| } |
| |
| static inline wuffs_base__table_u8 // |
| wuffs_base__empty_table_u8() { |
| wuffs_base__table_u8 ret; |
| ret.ptr = NULL; |
| ret.width = 0; |
| ret.height = 0; |
| ret.stride = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__table_u16 // |
| wuffs_base__empty_table_u16() { |
| wuffs_base__table_u16 ret; |
| ret.ptr = NULL; |
| ret.width = 0; |
| ret.height = 0; |
| ret.stride = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__table_u32 // |
| wuffs_base__empty_table_u32() { |
| wuffs_base__table_u32 ret; |
| ret.ptr = NULL; |
| ret.width = 0; |
| ret.height = 0; |
| ret.stride = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__table_u64 // |
| wuffs_base__empty_table_u64() { |
| wuffs_base__table_u64 ret; |
| ret.ptr = NULL; |
| ret.width = 0; |
| ret.height = 0; |
| ret.stride = 0; |
| return ret; |
| } |
| |
| static inline bool // |
| wuffs_base__slice_u8__overlaps(wuffs_base__slice_u8 s, wuffs_base__slice_u8 t) { |
| return ((s.ptr <= t.ptr) && (t.ptr < (s.ptr + s.len))) || |
| ((t.ptr <= s.ptr) && (s.ptr < (t.ptr + t.len))); |
| } |
| |
| // wuffs_base__slice_u8__subslice_i returns s[i:]. |
| // |
| // It returns an empty slice if i is out of bounds. |
| static inline wuffs_base__slice_u8 // |
| wuffs_base__slice_u8__subslice_i(wuffs_base__slice_u8 s, uint64_t i) { |
| if ((i <= SIZE_MAX) && (i <= s.len)) { |
| return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(s.len - i))); |
| } |
| return wuffs_base__make_slice_u8(NULL, 0); |
| } |
| |
| // wuffs_base__slice_u8__subslice_j returns s[:j]. |
| // |
| // It returns an empty slice if j is out of bounds. |
| static inline wuffs_base__slice_u8 // |
| wuffs_base__slice_u8__subslice_j(wuffs_base__slice_u8 s, uint64_t j) { |
| if ((j <= SIZE_MAX) && (j <= s.len)) { |
| return wuffs_base__make_slice_u8(s.ptr, ((size_t)j)); |
| } |
| return wuffs_base__make_slice_u8(NULL, 0); |
| } |
| |
| // wuffs_base__slice_u8__subslice_ij returns s[i:j]. |
| // |
| // It returns an empty slice if i or j is out of bounds. |
| static inline wuffs_base__slice_u8 // |
| wuffs_base__slice_u8__subslice_ij(wuffs_base__slice_u8 s, |
| uint64_t i, |
| uint64_t j) { |
| if ((i <= j) && (j <= SIZE_MAX) && (j <= s.len)) { |
| return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(j - i))); |
| } |
| return wuffs_base__make_slice_u8(NULL, 0); |
| } |
| |
| // wuffs_base__table__flattened_length returns the number of elements covered |
| // by the 1-dimensional span that backs a 2-dimensional table. This counts the |
| // elements inside the table and, when width != stride, the elements outside |
| // the table but between its rows. |
| // |
| // For example, consider a width 10, height 4, stride 10 table. Mark its first |
| // and last (inclusive) elements with 'a' and 'z'. This function returns 40. |
| // |
| // a123456789 |
| // 0123456789 |
| // 0123456789 |
| // 012345678z |
| // |
| // Now consider the sub-table of that from (2, 1) inclusive to (8, 4) exclusive. |
| // |
| // a123456789 |
| // 01iiiiiioo |
| // ooiiiiiioo |
| // ooiiiiii8z |
| // |
| // This function (called with width 6, height 3, stride 10) returns 26: 18 'i' |
| // inside elements plus 8 'o' outside elements. Note that 26 is less than a |
| // naive (height * stride = 30) computation. Indeed, advancing 29 elements from |
| // the first 'i' would venture past 'z', out of bounds of the original table. |
| // |
| // It does not check for overflow, but if the arguments come from a table that |
| // exists in memory and each element occupies a positive number of bytes then |
| // the result should be bounded by the amount of allocatable memory (which |
| // shouldn't overflow SIZE_MAX). |
| static inline size_t // |
| wuffs_base__table__flattened_length(size_t width, |
| size_t height, |
| size_t stride) { |
| if (height == 0) { |
| return 0; |
| } |
| return ((height - 1) * stride) + width; |
| } |
| |
| // ---------------- Magic Numbers |
| |
| // wuffs_base__magic_number_guess_fourcc guesses the file format of some data, |
| // given its opening bytes. It returns a positive FourCC value on success. |
| // |
| // It returns zero if nothing matches its hard-coded list of 'magic numbers'. |
| // |
| // It returns a negative value if a longer prefix is required for a conclusive |
| // result. For example, seeing a single 'B' byte is not enough to discriminate |
| // the BMP and BPG image file formats. |
| // |
| // It does not do a full validity check. Like any guess made from a short |
| // prefix of the data, it may return false positives. Data that starts with 99 |
| // bytes of valid JPEG followed by corruption or truncation is an invalid JPEG |
| // image overall, but this function will still return WUFFS_BASE__FOURCC__JPEG. |
| // |
| // Another source of false positives is that some 'magic numbers' are valid |
| // ASCII data. A file starting with "GIF87a and GIF89a are the two versions of |
| // GIF" will match GIF's 'magic number' even if it's plain text, not an image. |
| // |
| // For modular builds that divide the base module into sub-modules, using this |
| // function requires the WUFFS_CONFIG__MODULE__BASE__MAGIC sub-module, not just |
| // WUFFS_CONFIG__MODULE__BASE__CORE. |
| WUFFS_BASE__MAYBE_STATIC int32_t // |
| wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix); |
| |
| // ---------------- Ranges and Rects |
| |
| // See https://github.com/google/wuffs/blob/main/doc/note/ranges-and-rects.md |
| |
| typedef struct wuffs_base__range_ii_u32__struct { |
| uint32_t min_incl; |
| uint32_t max_incl; |
| |
| #ifdef __cplusplus |
| inline bool is_empty() const; |
| inline bool equals(wuffs_base__range_ii_u32__struct s) const; |
| inline wuffs_base__range_ii_u32__struct intersect( |
| wuffs_base__range_ii_u32__struct s) const; |
| inline wuffs_base__range_ii_u32__struct unite( |
| wuffs_base__range_ii_u32__struct s) const; |
| inline bool contains(uint32_t x) const; |
| inline bool contains_range(wuffs_base__range_ii_u32__struct s) const; |
| #endif // __cplusplus |
| |
| } wuffs_base__range_ii_u32; |
| |
| static inline wuffs_base__range_ii_u32 // |
| wuffs_base__empty_range_ii_u32() { |
| wuffs_base__range_ii_u32 ret; |
| ret.min_incl = 0; |
| ret.max_incl = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__range_ii_u32 // |
| wuffs_base__make_range_ii_u32(uint32_t min_incl, uint32_t max_incl) { |
| wuffs_base__range_ii_u32 ret; |
| ret.min_incl = min_incl; |
| ret.max_incl = max_incl; |
| return ret; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ii_u32__is_empty(const wuffs_base__range_ii_u32* r) { |
| return r->min_incl > r->max_incl; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ii_u32__equals(const wuffs_base__range_ii_u32* r, |
| wuffs_base__range_ii_u32 s) { |
| return (r->min_incl == s.min_incl && r->max_incl == s.max_incl) || |
| (wuffs_base__range_ii_u32__is_empty(r) && |
| wuffs_base__range_ii_u32__is_empty(&s)); |
| } |
| |
| static inline wuffs_base__range_ii_u32 // |
| wuffs_base__range_ii_u32__intersect(const wuffs_base__range_ii_u32* r, |
| wuffs_base__range_ii_u32 s) { |
| wuffs_base__range_ii_u32 t; |
| t.min_incl = wuffs_base__u32__max(r->min_incl, s.min_incl); |
| t.max_incl = wuffs_base__u32__min(r->max_incl, s.max_incl); |
| return t; |
| } |
| |
| static inline wuffs_base__range_ii_u32 // |
| wuffs_base__range_ii_u32__unite(const wuffs_base__range_ii_u32* r, |
| wuffs_base__range_ii_u32 s) { |
| if (wuffs_base__range_ii_u32__is_empty(r)) { |
| return s; |
| } |
| if (wuffs_base__range_ii_u32__is_empty(&s)) { |
| return *r; |
| } |
| wuffs_base__range_ii_u32 t; |
| t.min_incl = wuffs_base__u32__min(r->min_incl, s.min_incl); |
| t.max_incl = wuffs_base__u32__max(r->max_incl, s.max_incl); |
| return t; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ii_u32__contains(const wuffs_base__range_ii_u32* r, |
| uint32_t x) { |
| return (r->min_incl <= x) && (x <= r->max_incl); |
| } |
| |
| static inline bool // |
| wuffs_base__range_ii_u32__contains_range(const wuffs_base__range_ii_u32* r, |
| wuffs_base__range_ii_u32 s) { |
| return wuffs_base__range_ii_u32__equals( |
| &s, wuffs_base__range_ii_u32__intersect(r, s)); |
| } |
| |
| #ifdef __cplusplus |
| |
| inline bool // |
| wuffs_base__range_ii_u32::is_empty() const { |
| return wuffs_base__range_ii_u32__is_empty(this); |
| } |
| |
| inline bool // |
| wuffs_base__range_ii_u32::equals(wuffs_base__range_ii_u32 s) const { |
| return wuffs_base__range_ii_u32__equals(this, s); |
| } |
| |
| inline wuffs_base__range_ii_u32 // |
| wuffs_base__range_ii_u32::intersect(wuffs_base__range_ii_u32 s) const { |
| return wuffs_base__range_ii_u32__intersect(this, s); |
| } |
| |
| inline wuffs_base__range_ii_u32 // |
| wuffs_base__range_ii_u32::unite(wuffs_base__range_ii_u32 s) const { |
| return wuffs_base__range_ii_u32__unite(this, s); |
| } |
| |
| inline bool // |
| wuffs_base__range_ii_u32::contains(uint32_t x) const { |
| return wuffs_base__range_ii_u32__contains(this, x); |
| } |
| |
| inline bool // |
| wuffs_base__range_ii_u32::contains_range(wuffs_base__range_ii_u32 s) const { |
| return wuffs_base__range_ii_u32__contains_range(this, s); |
| } |
| |
| #endif // __cplusplus |
| |
| // -------- |
| |
| typedef struct wuffs_base__range_ie_u32__struct { |
| uint32_t min_incl; |
| uint32_t max_excl; |
| |
| #ifdef __cplusplus |
| inline bool is_empty() const; |
| inline bool equals(wuffs_base__range_ie_u32__struct s) const; |
| inline wuffs_base__range_ie_u32__struct intersect( |
| wuffs_base__range_ie_u32__struct s) const; |
| inline wuffs_base__range_ie_u32__struct unite( |
| wuffs_base__range_ie_u32__struct s) const; |
| inline bool contains(uint32_t x) const; |
| inline bool contains_range(wuffs_base__range_ie_u32__struct s) const; |
| inline uint32_t length() const; |
| #endif // __cplusplus |
| |
| } wuffs_base__range_ie_u32; |
| |
| static inline wuffs_base__range_ie_u32 // |
| wuffs_base__empty_range_ie_u32() { |
| wuffs_base__range_ie_u32 ret; |
| ret.min_incl = 0; |
| ret.max_excl = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__range_ie_u32 // |
| wuffs_base__make_range_ie_u32(uint32_t min_incl, uint32_t max_excl) { |
| wuffs_base__range_ie_u32 ret; |
| ret.min_incl = min_incl; |
| ret.max_excl = max_excl; |
| return ret; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ie_u32__is_empty(const wuffs_base__range_ie_u32* r) { |
| return r->min_incl >= r->max_excl; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ie_u32__equals(const wuffs_base__range_ie_u32* r, |
| wuffs_base__range_ie_u32 s) { |
| return (r->min_incl == s.min_incl && r->max_excl == s.max_excl) || |
| (wuffs_base__range_ie_u32__is_empty(r) && |
| wuffs_base__range_ie_u32__is_empty(&s)); |
| } |
| |
| static inline wuffs_base__range_ie_u32 // |
| wuffs_base__range_ie_u32__intersect(const wuffs_base__range_ie_u32* r, |
| wuffs_base__range_ie_u32 s) { |
| wuffs_base__range_ie_u32 t; |
| t.min_incl = wuffs_base__u32__max(r->min_incl, s.min_incl); |
| t.max_excl = wuffs_base__u32__min(r->max_excl, s.max_excl); |
| return t; |
| } |
| |
| static inline wuffs_base__range_ie_u32 // |
| wuffs_base__range_ie_u32__unite(const wuffs_base__range_ie_u32* r, |
| wuffs_base__range_ie_u32 s) { |
| if (wuffs_base__range_ie_u32__is_empty(r)) { |
| return s; |
| } |
| if (wuffs_base__range_ie_u32__is_empty(&s)) { |
| return *r; |
| } |
| wuffs_base__range_ie_u32 t; |
| t.min_incl = wuffs_base__u32__min(r->min_incl, s.min_incl); |
| t.max_excl = wuffs_base__u32__max(r->max_excl, s.max_excl); |
| return t; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ie_u32__contains(const wuffs_base__range_ie_u32* r, |
| uint32_t x) { |
| return (r->min_incl <= x) && (x < r->max_excl); |
| } |
| |
| static inline bool // |
| wuffs_base__range_ie_u32__contains_range(const wuffs_base__range_ie_u32* r, |
| wuffs_base__range_ie_u32 s) { |
| return wuffs_base__range_ie_u32__equals( |
| &s, wuffs_base__range_ie_u32__intersect(r, s)); |
| } |
| |
| static inline uint32_t // |
| wuffs_base__range_ie_u32__length(const wuffs_base__range_ie_u32* r) { |
| return wuffs_base__u32__sat_sub(r->max_excl, r->min_incl); |
| } |
| |
| #ifdef __cplusplus |
| |
| inline bool // |
| wuffs_base__range_ie_u32::is_empty() const { |
| return wuffs_base__range_ie_u32__is_empty(this); |
| } |
| |
| inline bool // |
| wuffs_base__range_ie_u32::equals(wuffs_base__range_ie_u32 s) const { |
| return wuffs_base__range_ie_u32__equals(this, s); |
| } |
| |
| inline wuffs_base__range_ie_u32 // |
| wuffs_base__range_ie_u32::intersect(wuffs_base__range_ie_u32 s) const { |
| return wuffs_base__range_ie_u32__intersect(this, s); |
| } |
| |
| inline wuffs_base__range_ie_u32 // |
| wuffs_base__range_ie_u32::unite(wuffs_base__range_ie_u32 s) const { |
| return wuffs_base__range_ie_u32__unite(this, s); |
| } |
| |
| inline bool // |
| wuffs_base__range_ie_u32::contains(uint32_t x) const { |
| return wuffs_base__range_ie_u32__contains(this, x); |
| } |
| |
| inline bool // |
| wuffs_base__range_ie_u32::contains_range(wuffs_base__range_ie_u32 s) const { |
| return wuffs_base__range_ie_u32__contains_range(this, s); |
| } |
| |
| inline uint32_t // |
| wuffs_base__range_ie_u32::length() const { |
| return wuffs_base__range_ie_u32__length(this); |
| } |
| |
| #endif // __cplusplus |
| |
| // -------- |
| |
| typedef struct wuffs_base__range_ii_u64__struct { |
| uint64_t min_incl; |
| uint64_t max_incl; |
| |
| #ifdef __cplusplus |
| inline bool is_empty() const; |
| inline bool equals(wuffs_base__range_ii_u64__struct s) const; |
| inline wuffs_base__range_ii_u64__struct intersect( |
| wuffs_base__range_ii_u64__struct s) const; |
| inline wuffs_base__range_ii_u64__struct unite( |
| wuffs_base__range_ii_u64__struct s) const; |
| inline bool contains(uint64_t x) const; |
| inline bool contains_range(wuffs_base__range_ii_u64__struct s) const; |
| #endif // __cplusplus |
| |
| } wuffs_base__range_ii_u64; |
| |
| static inline wuffs_base__range_ii_u64 // |
| wuffs_base__empty_range_ii_u64() { |
| wuffs_base__range_ii_u64 ret; |
| ret.min_incl = 0; |
| ret.max_incl = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__range_ii_u64 // |
| wuffs_base__make_range_ii_u64(uint64_t min_incl, uint64_t max_incl) { |
| wuffs_base__range_ii_u64 ret; |
| ret.min_incl = min_incl; |
| ret.max_incl = max_incl; |
| return ret; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ii_u64__is_empty(const wuffs_base__range_ii_u64* r) { |
| return r->min_incl > r->max_incl; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ii_u64__equals(const wuffs_base__range_ii_u64* r, |
| wuffs_base__range_ii_u64 s) { |
| return (r->min_incl == s.min_incl && r->max_incl == s.max_incl) || |
| (wuffs_base__range_ii_u64__is_empty(r) && |
| wuffs_base__range_ii_u64__is_empty(&s)); |
| } |
| |
| static inline wuffs_base__range_ii_u64 // |
| wuffs_base__range_ii_u64__intersect(const wuffs_base__range_ii_u64* r, |
| wuffs_base__range_ii_u64 s) { |
| wuffs_base__range_ii_u64 t; |
| t.min_incl = wuffs_base__u64__max(r->min_incl, s.min_incl); |
| t.max_incl = wuffs_base__u64__min(r->max_incl, s.max_incl); |
| return t; |
| } |
| |
| static inline wuffs_base__range_ii_u64 // |
| wuffs_base__range_ii_u64__unite(const wuffs_base__range_ii_u64* r, |
| wuffs_base__range_ii_u64 s) { |
| if (wuffs_base__range_ii_u64__is_empty(r)) { |
| return s; |
| } |
| if (wuffs_base__range_ii_u64__is_empty(&s)) { |
| return *r; |
| } |
| wuffs_base__range_ii_u64 t; |
| t.min_incl = wuffs_base__u64__min(r->min_incl, s.min_incl); |
| t.max_incl = wuffs_base__u64__max(r->max_incl, s.max_incl); |
| return t; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ii_u64__contains(const wuffs_base__range_ii_u64* r, |
| uint64_t x) { |
| return (r->min_incl <= x) && (x <= r->max_incl); |
| } |
| |
| static inline bool // |
| wuffs_base__range_ii_u64__contains_range(const wuffs_base__range_ii_u64* r, |
| wuffs_base__range_ii_u64 s) { |
| return wuffs_base__range_ii_u64__equals( |
| &s, wuffs_base__range_ii_u64__intersect(r, s)); |
| } |
| |
| #ifdef __cplusplus |
| |
| inline bool // |
| wuffs_base__range_ii_u64::is_empty() const { |
| return wuffs_base__range_ii_u64__is_empty(this); |
| } |
| |
| inline bool // |
| wuffs_base__range_ii_u64::equals(wuffs_base__range_ii_u64 s) const { |
| return wuffs_base__range_ii_u64__equals(this, s); |
| } |
| |
| inline wuffs_base__range_ii_u64 // |
| wuffs_base__range_ii_u64::intersect(wuffs_base__range_ii_u64 s) const { |
| return wuffs_base__range_ii_u64__intersect(this, s); |
| } |
| |
| inline wuffs_base__range_ii_u64 // |
| wuffs_base__range_ii_u64::unite(wuffs_base__range_ii_u64 s) const { |
| return wuffs_base__range_ii_u64__unite(this, s); |
| } |
| |
| inline bool // |
| wuffs_base__range_ii_u64::contains(uint64_t x) const { |
| return wuffs_base__range_ii_u64__contains(this, x); |
| } |
| |
| inline bool // |
| wuffs_base__range_ii_u64::contains_range(wuffs_base__range_ii_u64 s) const { |
| return wuffs_base__range_ii_u64__contains_range(this, s); |
| } |
| |
| #endif // __cplusplus |
| |
| // -------- |
| |
| typedef struct wuffs_base__range_ie_u64__struct { |
| uint64_t min_incl; |
| uint64_t max_excl; |
| |
| #ifdef __cplusplus |
| inline bool is_empty() const; |
| inline bool equals(wuffs_base__range_ie_u64__struct s) const; |
| inline wuffs_base__range_ie_u64__struct intersect( |
| wuffs_base__range_ie_u64__struct s) const; |
| inline wuffs_base__range_ie_u64__struct unite( |
| wuffs_base__range_ie_u64__struct s) const; |
| inline bool contains(uint64_t x) const; |
| inline bool contains_range(wuffs_base__range_ie_u64__struct s) const; |
| inline uint64_t length() const; |
| #endif // __cplusplus |
| |
| } wuffs_base__range_ie_u64; |
| |
| static inline wuffs_base__range_ie_u64 // |
| wuffs_base__empty_range_ie_u64() { |
| wuffs_base__range_ie_u64 ret; |
| ret.min_incl = 0; |
| ret.max_excl = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__range_ie_u64 // |
| wuffs_base__make_range_ie_u64(uint64_t min_incl, uint64_t max_excl) { |
| wuffs_base__range_ie_u64 ret; |
| ret.min_incl = min_incl; |
| ret.max_excl = max_excl; |
| return ret; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ie_u64__is_empty(const wuffs_base__range_ie_u64* r) { |
| return r->min_incl >= r->max_excl; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ie_u64__equals(const wuffs_base__range_ie_u64* r, |
| wuffs_base__range_ie_u64 s) { |
| return (r->min_incl == s.min_incl && r->max_excl == s.max_excl) || |
| (wuffs_base__range_ie_u64__is_empty(r) && |
| wuffs_base__range_ie_u64__is_empty(&s)); |
| } |
| |
| static inline wuffs_base__range_ie_u64 // |
| wuffs_base__range_ie_u64__intersect(const wuffs_base__range_ie_u64* r, |
| wuffs_base__range_ie_u64 s) { |
| wuffs_base__range_ie_u64 t; |
| t.min_incl = wuffs_base__u64__max(r->min_incl, s.min_incl); |
| t.max_excl = wuffs_base__u64__min(r->max_excl, s.max_excl); |
| return t; |
| } |
| |
| static inline wuffs_base__range_ie_u64 // |
| wuffs_base__range_ie_u64__unite(const wuffs_base__range_ie_u64* r, |
| wuffs_base__range_ie_u64 s) { |
| if (wuffs_base__range_ie_u64__is_empty(r)) { |
| return s; |
| } |
| if (wuffs_base__range_ie_u64__is_empty(&s)) { |
| return *r; |
| } |
| wuffs_base__range_ie_u64 t; |
| t.min_incl = wuffs_base__u64__min(r->min_incl, s.min_incl); |
| t.max_excl = wuffs_base__u64__max(r->max_excl, s.max_excl); |
| return t; |
| } |
| |
| static inline bool // |
| wuffs_base__range_ie_u64__contains(const wuffs_base__range_ie_u64* r, |
| uint64_t x) { |
| return (r->min_incl <= x) && (x < r->max_excl); |
| } |
| |
| static inline bool // |
| wuffs_base__range_ie_u64__contains_range(const wuffs_base__range_ie_u64* r, |
| wuffs_base__range_ie_u64 s) { |
| return wuffs_base__range_ie_u64__equals( |
| &s, wuffs_base__range_ie_u64__intersect(r, s)); |
| } |
| |
| static inline uint64_t // |
| wuffs_base__range_ie_u64__length(const wuffs_base__range_ie_u64* r) { |
| return wuffs_base__u64__sat_sub(r->max_excl, r->min_incl); |
| } |
| |
| #ifdef __cplusplus |
| |
| inline bool // |
| wuffs_base__range_ie_u64::is_empty() const { |
| return wuffs_base__range_ie_u64__is_empty(this); |
| } |
| |
| inline bool // |
| wuffs_base__range_ie_u64::equals(wuffs_base__range_ie_u64 s) const { |
| return wuffs_base__range_ie_u64__equals(this, s); |
| } |
| |
| inline wuffs_base__range_ie_u64 // |
| wuffs_base__range_ie_u64::intersect(wuffs_base__range_ie_u64 s) const { |
| return wuffs_base__range_ie_u64__intersect(this, s); |
| } |
| |
| inline wuffs_base__range_ie_u64 // |
| wuffs_base__range_ie_u64::unite(wuffs_base__range_ie_u64 s) const { |
| return wuffs_base__range_ie_u64__unite(this, s); |
| } |
| |
| inline bool // |
| wuffs_base__range_ie_u64::contains(uint64_t x) const { |
| return wuffs_base__range_ie_u64__contains(this, x); |
| } |
| |
| inline bool // |
| wuffs_base__range_ie_u64::contains_range(wuffs_base__range_ie_u64 s) const { |
| return wuffs_base__range_ie_u64__contains_range(this, s); |
| } |
| |
| inline uint64_t // |
| wuffs_base__range_ie_u64::length() const { |
| return wuffs_base__range_ie_u64__length(this); |
| } |
| |
| #endif // __cplusplus |
| |
| // -------- |
| |
| typedef struct wuffs_base__rect_ii_u32__struct { |
| uint32_t min_incl_x; |
| uint32_t min_incl_y; |
| uint32_t max_incl_x; |
| uint32_t max_incl_y; |
| |
| #ifdef __cplusplus |
| inline bool is_empty() const; |
| inline bool equals(wuffs_base__rect_ii_u32__struct s) const; |
| inline wuffs_base__rect_ii_u32__struct intersect( |
| wuffs_base__rect_ii_u32__struct s) const; |
| inline wuffs_base__rect_ii_u32__struct unite( |
| wuffs_base__rect_ii_u32__struct s) const; |
| inline bool contains(uint32_t x, uint32_t y) const; |
| inline bool contains_rect(wuffs_base__rect_ii_u32__struct s) const; |
| #endif // __cplusplus |
| |
| } wuffs_base__rect_ii_u32; |
| |
| static inline wuffs_base__rect_ii_u32 // |
| wuffs_base__empty_rect_ii_u32() { |
| wuffs_base__rect_ii_u32 ret; |
| ret.min_incl_x = 0; |
| ret.min_incl_y = 0; |
| ret.max_incl_x = 0; |
| ret.max_incl_y = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__rect_ii_u32 // |
| wuffs_base__make_rect_ii_u32(uint32_t min_incl_x, |
| uint32_t min_incl_y, |
| uint32_t max_incl_x, |
| uint32_t max_incl_y) { |
| wuffs_base__rect_ii_u32 ret; |
| ret.min_incl_x = min_incl_x; |
| ret.min_incl_y = min_incl_y; |
| ret.max_incl_x = max_incl_x; |
| ret.max_incl_y = max_incl_y; |
| return ret; |
| } |
| |
| static inline bool // |
| wuffs_base__rect_ii_u32__is_empty(const wuffs_base__rect_ii_u32* r) { |
| return (r->min_incl_x > r->max_incl_x) || (r->min_incl_y > r->max_incl_y); |
| } |
| |
| static inline bool // |
| wuffs_base__rect_ii_u32__equals(const wuffs_base__rect_ii_u32* r, |
| wuffs_base__rect_ii_u32 s) { |
| return (r->min_incl_x == s.min_incl_x && r->min_incl_y == s.min_incl_y && |
| r->max_incl_x == s.max_incl_x && r->max_incl_y == s.max_incl_y) || |
| (wuffs_base__rect_ii_u32__is_empty(r) && |
| wuffs_base__rect_ii_u32__is_empty(&s)); |
| } |
| |
| static inline wuffs_base__rect_ii_u32 // |
| wuffs_base__rect_ii_u32__intersect(const wuffs_base__rect_ii_u32* r, |
| wuffs_base__rect_ii_u32 s) { |
| wuffs_base__rect_ii_u32 t; |
| t.min_incl_x = wuffs_base__u32__max(r->min_incl_x, s.min_incl_x); |
| t.min_incl_y = wuffs_base__u32__max(r->min_incl_y, s.min_incl_y); |
| t.max_incl_x = wuffs_base__u32__min(r->max_incl_x, s.max_incl_x); |
| t.max_incl_y = wuffs_base__u32__min(r->max_incl_y, s.max_incl_y); |
| return t; |
| } |
| |
| static inline wuffs_base__rect_ii_u32 // |
| wuffs_base__rect_ii_u32__unite(const wuffs_base__rect_ii_u32* r, |
| wuffs_base__rect_ii_u32 s) { |
| if (wuffs_base__rect_ii_u32__is_empty(r)) { |
| return s; |
| } |
| if (wuffs_base__rect_ii_u32__is_empty(&s)) { |
| return *r; |
| } |
| wuffs_base__rect_ii_u32 t; |
| t.min_incl_x = wuffs_base__u32__min(r->min_incl_x, s.min_incl_x); |
| t.min_incl_y = wuffs_base__u32__min(r->min_incl_y, s.min_incl_y); |
| t.max_incl_x = wuffs_base__u32__max(r->max_incl_x, s.max_incl_x); |
| t.max_incl_y = wuffs_base__u32__max(r->max_incl_y, s.max_incl_y); |
| return t; |
| } |
| |
| static inline bool // |
| wuffs_base__rect_ii_u32__contains(const wuffs_base__rect_ii_u32* r, |
| uint32_t x, |
| uint32_t y) { |
| return (r->min_incl_x <= x) && (x <= r->max_incl_x) && (r->min_incl_y <= y) && |
| (y <= r->max_incl_y); |
| } |
| |
| static inline bool // |
| wuffs_base__rect_ii_u32__contains_rect(const wuffs_base__rect_ii_u32* r, |
| wuffs_base__rect_ii_u32 s) { |
| return wuffs_base__rect_ii_u32__equals( |
| &s, wuffs_base__rect_ii_u32__intersect(r, s)); |
| } |
| |
| #ifdef __cplusplus |
| |
| inline bool // |
| wuffs_base__rect_ii_u32::is_empty() const { |
| return wuffs_base__rect_ii_u32__is_empty(this); |
| } |
| |
| inline bool // |
| wuffs_base__rect_ii_u32::equals(wuffs_base__rect_ii_u32 s) const { |
| return wuffs_base__rect_ii_u32__equals(this, s); |
| } |
| |
| inline wuffs_base__rect_ii_u32 // |
| wuffs_base__rect_ii_u32::intersect(wuffs_base__rect_ii_u32 s) const { |
| return wuffs_base__rect_ii_u32__intersect(this, s); |
| } |
| |
| inline wuffs_base__rect_ii_u32 // |
| wuffs_base__rect_ii_u32::unite(wuffs_base__rect_ii_u32 s) const { |
| return wuffs_base__rect_ii_u32__unite(this, s); |
| } |
| |
| inline bool // |
| wuffs_base__rect_ii_u32::contains(uint32_t x, uint32_t y) const { |
| return wuffs_base__rect_ii_u32__contains(this, x, y); |
| } |
| |
| inline bool // |
| wuffs_base__rect_ii_u32::contains_rect(wuffs_base__rect_ii_u32 s) const { |
| return wuffs_base__rect_ii_u32__contains_rect(this, s); |
| } |
| |
| #endif // __cplusplus |
| |
| // -------- |
| |
| typedef struct wuffs_base__rect_ie_u32__struct { |
| uint32_t min_incl_x; |
| uint32_t min_incl_y; |
| uint32_t max_excl_x; |
| uint32_t max_excl_y; |
| |
| #ifdef __cplusplus |
| inline bool is_empty() const; |
| inline bool equals(wuffs_base__rect_ie_u32__struct s) const; |
| inline wuffs_base__rect_ie_u32__struct intersect( |
| wuffs_base__rect_ie_u32__struct s) const; |
| inline wuffs_base__rect_ie_u32__struct unite( |
| wuffs_base__rect_ie_u32__struct s) const; |
| inline bool contains(uint32_t x, uint32_t y) const; |
| inline bool contains_rect(wuffs_base__rect_ie_u32__struct s) const; |
| inline uint32_t width() const; |
| inline uint32_t height() const; |
| #endif // __cplusplus |
| |
| } wuffs_base__rect_ie_u32; |
| |
| static inline wuffs_base__rect_ie_u32 // |
| wuffs_base__empty_rect_ie_u32() { |
| wuffs_base__rect_ie_u32 ret; |
| ret.min_incl_x = 0; |
| ret.min_incl_y = 0; |
| ret.max_excl_x = 0; |
| ret.max_excl_y = 0; |
| return ret; |
| } |
| |
| static inline wuffs_base__rect_ie_u32 // |
| wuffs_base__make_rect_ie_u32(uint32_t min_incl_x, |
| uint32_t min_incl_y, |
| uint32_t max_excl_x, |
| uint32_t max_excl_y) { |
| wuffs_base__rect_ie_u32 ret; |
| ret.min_incl_x = min_incl_x; |
| ret.min_incl_y = min_incl_y; |
| ret.max_excl_x = max_excl_x; |
| ret.max_excl_y = max_excl_y; |
| return ret; |
| } |
| |
| static inline bool // |
| wuffs_base__rect_ie_u32__is_empty(const wuffs_base__rect_ie_u32* r) { |
| return (r->min_incl_x >= r->max_excl_x) || (r->min_incl_y >= r->max_excl_y); |
| } |
| |
| static inline bool // |
| wuffs_base__rect_ie_u32__equals(const wuffs_base__rect_ie_u32* r, |
| wuffs_base__rect_ie_u32 s) { |
| return (r->min_incl_x == s.min_incl_x && r->min_incl_y == s.min_incl_y && |
| r->max_excl_x == s.max_excl_x && r->max_excl_y == s.max_excl_y) || |
| (wuffs_base__rect_ie_u32__is_empty(r) && |
| wuffs_base__rect_ie_u32__is_empty(&s)); |
| } |
| |
| static inline wuffs_base__rect_ie_u32 // |
| wuffs_base__rect_ie_u32__intersect(const wuffs_base__rect_ie_u32* r, |
| wuffs_base__rect_ie_u32 s) { |
| wuffs_base__rect_ie_u32 t; |
| t.min_incl_x = wuffs_base__u32__max(r->min_incl_x, s.min_incl_x); |
| t.min_incl_y = wuffs_base__u32__max(r->min_incl_y, s.min_incl_y); |
| t.max_excl_x = wuffs_base__u32__min(r->max_excl_x, s.max_excl_x); |
| t.max_excl_y = wuffs_base__u32__min(r->max_excl_y, s.max_excl_y); |
| return t; |
| } |
| |
| static inline wuffs_base__rect_ie_u32 // |
| wuffs_base__rect_ie_u32__unite(const wuffs_base__rect_ie_u32* r, |
| wuffs_base__rect_ie_u32 s) { |
| if (wuffs_base__rect_ie_u32__is_empty(r)) { |
| return s; |
| } |
| if (wuffs_base__rect_ie_u32__is_empty(&s)) { |
| return *r; |
| } |
| wuffs_base__rect_ie_u32 t; |
| t.min_incl_x = wuffs_base__u32__min(r->min_incl_x, s.min_incl_x); |
| t.min_incl_y = wuffs_base__u32__min(r->min_incl_y, s.min_incl_y); |
| t.max_excl_x = wuffs_base__u32__max(r->max_excl_x, s.max_excl_x); |
| t.max_excl_y = wuffs_base__u32__max(r->max_excl_y, s.max_excl_y); |
| return t; |
| } |
| |
| static inline bool // |
| wuffs_base__rect_ie_u32__contains(const wuffs_base__rect_ie_u32* r, |
| uint32_t x, |
| uint32_t y) { |
| return (r->min_incl_x <= x) && (x < r->max_excl_x) && (r->min_incl_y <= y) && |
| (y < r->max_excl_y); |
| } |
| |
| static inline bool // |
| wuffs_base__rect_ie_u32__contains_rect(const wuffs_base__rect_ie_u32* r, |
| wuffs_base__rect_ie_u32 s) { |
| return wuffs_base__rect_ie_u32__equals( |
| &s, wuffs_base__rect_ie_u32__intersect(r, s)); |
| } |
| |
| static inline uint32_t // |
| wuffs_base__rect_ie_u32__width(const wuffs_base__rect_ie_u32* r) { |
| return wuffs_base__u32__sat_sub(r->max_excl_x, r->min_incl_x); |
| } |
| |
| static inline uint32_t // |
| wuffs_base__rect_ie_u32__height(const wuffs_base__rect_ie_u32* r) { |
| return wuffs_base__u32__sat_sub(r->max_excl_y, r->min_incl_y); |
| } |
| |
| #ifdef __cplusplus |
| |
| inline bool // |
| wuffs_base__rect_ie_u32::is_empty() const { |
| return wuffs_base__rect_ie_u32__is_empty(this); |
| } |
| |
| inline bool // |
| wuffs_base__rect_ie_u32::equals(wuffs_base__rect_ie_u32 s) const { |
| return wuffs_base__rect_ie_u32__equals(this, s); |
| } |
| |
| inline wuffs_base__rect_ie_u32 // |
| wuffs_base__rect_ie_u32::intersect(wuffs_base__rect_ie_u32 s) const { |
| return wuffs_base__rect_ie_u32__intersect(this, s); |
| } |
| |
| inline wuffs_base__rect_ie_u32 // |
| wuffs_base__rect_ie_u32::unite(wuffs_base__rect_ie_u32 s) const { |
| return wuffs_base__rect_ie_u32__unite(this, s); |
| } |
| |
| inline bool // |
| wuffs_base__rect_ie_u32::contains(uint32_t x, uint32_t y) const { |
| return wuffs_base__rect_ie_u32__contains(this, x, y); |
| } |
| |
| inline bool // |
| wuffs_base__rect_ie_u32::contains_rect(wuffs_base__rect_ie_u32 s) const { |
| return wuffs_base__rect_ie_u32__contains_rect(this, s); |
| } |
| |
| inline uint32_t // |
| wuffs_base__rect_ie_u32::width() const { |
| return wuffs_base__rect_ie_u32__width(this); |
| } |
| |
| inline uint32_t // |
| wuffs_base__rect_ie_u32::height() const { |
| return wuffs_base__rect_ie_u32__height(this); |
| } |
| |
| #endif // __cplusplus |
| |
| // ---------------- More Information |
| |
| // wuffs_base__more_information holds additional fields, typically when a Wuffs |
| // method returns a [note status](/doc/note/statuses.md). |
| // |
| // The flavor field follows the base38 namespace |
| // convention](/doc/note/base38-and-fourcc.md). The other fields' semantics |
| // depends on the flavor. |
| typedef struct wuffs_base__more_information__struct { |
| uint32_t flavor; |
| uint32_t w; |
| uint64_t x; |
| uint64_t y; |
| uint64_t z; |
| |
| #ifdef __cplusplus |
| inline void set(uint32_t flavor_arg, |
| uint32_t w_arg, |
| uint64_t x_arg, |
| uint64_t y_arg, |
| uint64_t z_arg); |
| inline uint32_t io_redirect__fourcc() const; |
| inline wuffs_base__range_ie_u64 io_redirect__range() const; |
| inline uint64_t io_seek__position() const; |
| inline uint32_t metadata__fourcc() const; |
| inline wuffs_base__range_ie_u64 metadata__range() const; |
| #endif // __cplusplus |
| |
| } wuffs_base__more_information; |
| |
| #define WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_REDIRECT 1 |
| #define WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_SEEK 2 |
| #define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA 3 |
| |
| static inline wuffs_base__more_information // |
| wuffs_base__empty_more_information() { |
| wuffs_base__more_information ret; |
| ret.flavor = 0; |
| ret.w = 0; |
| ret.x = 0; |
| ret.y = 0; |
| ret.z = 0; |
| return ret; |
| } |
| |
| static inline void // |
| wuffs_base__more_information__set(wuffs_base__more_information* m, |
| uint32_t flavor, |
| uint32_t w, |
| uint64_t x, |
| uint64_t y, |
| uint64_t z) { |
| if (!m) { |
| return; |
| } |
| m->flavor = flavor; |
| m->w = w; |
| m->x = x; |
| m->y = y; |
| m->z = z; |
| } |
| |
| static inline uint32_t // |
| wuffs_base__more_information__io_redirect__fourcc( |
| const wuffs_base__more_information* m) { |
| return m->w; |
| } |
| |
| static inline wuffs_base__range_ie_u64 // |
| wuffs_base__more_information__io_redirect__range( |
| const wuffs_base__more_information* m) { |
| wuffs_base__range_ie_u64 ret; |
| ret.min_incl = m->y; |
| ret.max_excl = m->z; |
| return ret; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__more_information__io_seek__position( |
| const wuffs_base__more_information* m) { |
| return m->x; |
| } |
| |
| static inline uint32_t // |
| wuffs_base__more_information__metadata__fourcc( |
| const wuffs_base__more_information* m) { |
| return m->w; |
| } |
| |
| static inline wuffs_base__range_ie_u64 // |
| wuffs_base__more_information__metadata__range( |
| const wuffs_base__more_information* m) { |
| wuffs_base__range_ie_u64 ret; |
| ret.min_incl = m->y; |
| ret.max_excl = m->z; |
| return ret; |
| } |
| |
| #ifdef __cplusplus |
| |
| inline void // |
| wuffs_base__more_information::set(uint32_t flavor_arg, |
| uint32_t w_arg, |
| uint64_t x_arg, |
| uint64_t y_arg, |
| uint64_t z_arg) { |
| wuffs_base__more_information__set(this, flavor_arg, w_arg, x_arg, y_arg, |
| z_arg); |
| } |
| |
| inline uint32_t // |
| wuffs_base__more_information::io_redirect__fourcc() const { |
| return wuffs_base__more_information__io_redirect__fourcc(this); |
| } |
| |
| inline wuffs_base__range_ie_u64 // |
| wuffs_base__more_information::io_redirect__range() const { |
| return wuffs_base__more_information__io_redirect__range(this); |
| } |
| |
| inline uint64_t // |
| wuffs_base__more_information::io_seek__position() const { |
| return wuffs_base__more_information__io_seek__position(this); |
| } |
| |
| inline uint32_t // |
| wuffs_base__more_information::metadata__fourcc() const { |
| return wuffs_base__more_information__metadata__fourcc(this); |
| } |
| |
| inline wuffs_base__range_ie_u64 // |
| wuffs_base__more_information::metadata__range() const { |
| return wuffs_base__more_information__metadata__range(this); |
| } |
| |
| #endif // __cplusplus |
| |
| // ---------------- I/O |
| // |
| // See (/doc/note/io-input-output.md). |
| |
| // wuffs_base__io_buffer_meta is the metadata for a wuffs_base__io_buffer's |
| // data. |
| typedef struct wuffs_base__io_buffer_meta__struct { |
| size_t wi; // Write index. Invariant: wi <= len. |
| size_t ri; // Read index. Invariant: ri <= wi. |
| uint64_t pos; // Buffer position (relative to the start of stream). |
| bool closed; // No further writes are expected. |
| } wuffs_base__io_buffer_meta; |
| |
| // wuffs_base__io_buffer is a 1-dimensional buffer (a pointer and length) plus |
| // additional metadata. |
| // |
| // A value with all fields zero is a valid, empty buffer. |
| typedef struct wuffs_base__io_buffer__struct { |
| wuffs_base__slice_u8 data; |
| wuffs_base__io_buffer_meta meta; |
| |
| #ifdef __cplusplus |
| inline bool is_valid() const; |
| inline void compact(); |
| inline size_t reader_length() const; |
| inline uint8_t* reader_pointer() const; |
| inline uint64_t reader_position() const; |
| inline wuffs_base__slice_u8 reader_slice() const; |
| inline size_t writer_length() const; |
| inline uint8_t* writer_pointer() const; |
| inline uint64_t writer_position() const; |
| inline wuffs_base__slice_u8 writer_slice() const; |
| |
| // Deprecated: use reader_position. |
| inline uint64_t reader_io_position() const; |
| // Deprecated: use writer_position. |
| inline uint64_t writer_io_position() const; |
| #endif // __cplusplus |
| |
| } wuffs_base__io_buffer; |
| |
| static inline wuffs_base__io_buffer // |
| wuffs_base__make_io_buffer(wuffs_base__slice_u8 data, |
| wuffs_base__io_buffer_meta meta) { |
| wuffs_base__io_buffer ret; |
| ret.data = data; |
| ret.meta = meta; |
| return ret; |
| } |
| |
| static inline wuffs_base__io_buffer_meta // |
| wuffs_base__make_io_buffer_meta(size_t wi, |
| size_t ri, |
| uint64_t pos, |
| bool closed) { |
| wuffs_base__io_buffer_meta ret; |
| ret.wi = wi; |
| ret.ri = ri; |
| ret.pos = pos; |
| ret.closed = closed; |
| return ret; |
| } |
| |
| static inline wuffs_base__io_buffer // |
| wuffs_base__ptr_u8__reader(uint8_t* ptr, size_t len, bool closed) { |
| wuffs_base__io_buffer ret; |
| ret.data.ptr = ptr; |
| ret.data.len = len; |
| ret.meta.wi = len; |
| ret.meta.ri = 0; |
| ret.meta.pos = 0; |
| ret.meta.closed = closed; |
| return ret; |
| } |
| |
| static inline wuffs_base__io_buffer // |
| wuffs_base__ptr_u8__writer(uint8_t* ptr, size_t len) { |
| wuffs_base__io_buffer ret; |
| ret.data.ptr = ptr; |
| ret.data.len = len; |
| ret.meta.wi = 0; |
| ret.meta.ri = 0; |
| ret.meta.pos = 0; |
| ret.meta.closed = false; |
| return ret; |
| } |
| |
| static inline wuffs_base__io_buffer // |
| wuffs_base__slice_u8__reader(wuffs_base__slice_u8 s, bool closed) { |
| wuffs_base__io_buffer ret; |
| ret.data.ptr = s.ptr; |
| ret.data.len = s.len; |
| ret.meta.wi = s.len; |
| ret.meta.ri = 0; |
| ret.meta.pos = 0; |
| ret.meta.closed = closed; |
| return ret; |
| } |
| |
| static inline wuffs_base__io_buffer // |
| wuffs_base__slice_u8__writer(wuffs_base__slice_u8 s) { |
| wuffs_base__io_buffer ret; |
| ret.data.ptr = s.ptr; |
| ret.data.len = s.len; |
| ret.meta.wi = 0; |
| ret.meta.ri = 0; |
| ret.meta.pos = 0; |
| ret.meta.closed = false; |
| return ret; |
| } |
| |
| static inline wuffs_base__io_buffer // |
| wuffs_base__empty_io_buffer() { |
| wuffs_base__io_buffer ret; |
| ret.data.ptr = NULL; |
| ret.data.len = 0; |
| ret.meta.wi = 0; |
| ret.meta.ri = 0; |
| ret.meta.pos = 0; |
| ret.meta.closed = false; |
| return ret; |
| } |
| |
| static inline wuffs_base__io_buffer_meta // |
| wuffs_base__empty_io_buffer_meta() { |
| wuffs_base__io_buffer_meta ret; |
| ret.wi = 0; |
| ret.ri = 0; |
| ret.pos = 0; |
| ret.closed = false; |
| return ret; |
| } |
| |
| static inline bool // |
| wuffs_base__io_buffer__is_valid(const wuffs_base__io_buffer* buf) { |
| if (buf) { |
| if (buf->data.ptr) { |
| return (buf->meta.ri <= buf->meta.wi) && (buf->meta.wi <= buf->data.len); |
| } else { |
| return (buf->meta.ri == 0) && (buf->meta.wi == 0) && (buf->data.len == 0); |
| } |
| } |
| return false; |
| } |
| |
| // wuffs_base__io_buffer__compact moves any written but unread bytes to the |
| // start of the buffer. |
| static inline void // |
| wuffs_base__io_buffer__compact(wuffs_base__io_buffer* buf) { |
| if (!buf || (buf->meta.ri == 0)) { |
| return; |
| } |
| buf->meta.pos = wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri); |
| size_t n = buf->meta.wi - buf->meta.ri; |
| if (n != 0) { |
| memmove(buf->data.ptr, buf->data.ptr + buf->meta.ri, n); |
| } |
| buf->meta.wi = n; |
| buf->meta.ri = 0; |
| } |
| |
| // Deprecated. Use wuffs_base__io_buffer__reader_position. |
| static inline uint64_t // |
| wuffs_base__io_buffer__reader_io_position(const wuffs_base__io_buffer* buf) { |
| return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri) : 0; |
| } |
| |
| static inline size_t // |
| wuffs_base__io_buffer__reader_length(const wuffs_base__io_buffer* buf) { |
| return buf ? buf->meta.wi - buf->meta.ri : 0; |
| } |
| |
| static inline uint8_t* // |
| wuffs_base__io_buffer__reader_pointer(const wuffs_base__io_buffer* buf) { |
| return buf ? (buf->data.ptr + buf->meta.ri) : NULL; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__io_buffer__reader_position(const wuffs_base__io_buffer* buf) { |
| return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri) : 0; |
| } |
| |
| static inline wuffs_base__slice_u8 // |
| wuffs_base__io_buffer__reader_slice(const wuffs_base__io_buffer* buf) { |
| return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.ri, |
| buf->meta.wi - buf->meta.ri) |
| : wuffs_base__empty_slice_u8(); |
| } |
| |
| // Deprecated. Use wuffs_base__io_buffer__writer_position. |
| static inline uint64_t // |
| wuffs_base__io_buffer__writer_io_position(const wuffs_base__io_buffer* buf) { |
| return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.wi) : 0; |
| } |
| |
| static inline size_t // |
| wuffs_base__io_buffer__writer_length(const wuffs_base__io_buffer* buf) { |
| return buf ? buf->data.len - buf->meta.wi : 0; |
| } |
| |
| static inline uint8_t* // |
| wuffs_base__io_buffer__writer_pointer(const wuffs_base__io_buffer* buf) { |
| return buf ? (buf->data.ptr + buf->meta.wi) : NULL; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__io_buffer__writer_position(const wuffs_base__io_buffer* buf) { |
| return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.wi) : 0; |
| } |
| |
| static inline wuffs_base__slice_u8 // |
| wuffs_base__io_buffer__writer_slice(const wuffs_base__io_buffer* buf) { |
| return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.wi, |
| buf->data.len - buf->meta.wi) |
| : wuffs_base__empty_slice_u8(); |
| } |
| |
| #ifdef __cplusplus |
| |
| inline bool // |
| wuffs_base__io_buffer::is_valid() const { |
| return wuffs_base__io_buffer__is_valid(this); |
| } |
| |
| inline void // |
| wuffs_base__io_buffer::compact() { |
| wuffs_base__io_buffer__compact(this); |
| } |
| |
| inline uint64_t // |
| wuffs_base__io_buffer::reader_io_position() const { |
| return wuffs_base__io_buffer__reader_io_position(this); |
| } |
| |
| inline size_t // |
| wuffs_base__io_buffer::reader_length() const { |
| return wuffs_base__io_buffer__reader_length(this); |
| } |
| |
| inline uint8_t* // |
| wuffs_base__io_buffer::reader_pointer() const { |
| return wuffs_base__io_buffer__reader_pointer(this); |
| } |
| |
| inline uint64_t // |
| wuffs_base__io_buffer::reader_position() const { |
| return wuffs_base__io_buffer__reader_position(this); |
| } |
| |
| inline wuffs_base__slice_u8 // |
| wuffs_base__io_buffer::reader_slice() const { |
| return wuffs_base__io_buffer__reader_slice(this); |
| } |
| |
| inline uint64_t // |
| wuffs_base__io_buffer::writer_io_position() const { |
| return wuffs_base__io_buffer__writer_io_position(this); |
| } |
| |
| inline size_t // |
| wuffs_base__io_buffer::writer_length() const { |
| return wuffs_base__io_buffer__writer_length(this); |
| } |
| |
| inline uint8_t* // |
| wuffs_base__io_buffer::writer_pointer() const { |
| return wuffs_base__io_buffer__writer_pointer(this); |
| } |
| |
| inline uint64_t // |
| wuffs_base__io_buffer::writer_position() const { |
| return wuffs_base__io_buffer__writer_position(this); |
| } |
| |
| inline wuffs_base__slice_u8 // |
| wuffs_base__io_buffer::writer_slice() const { |
| return wuffs_base__io_buffer__writer_slice(this); |
| } |
| |
| #endif // __cplusplus |
| |
| // ---------------- Tokens |
| |
| // wuffs_base__token is an element of a byte stream's tokenization. |
| // |
| // See https://github.com/google/wuffs/blob/main/doc/note/tokens.md |
| typedef struct wuffs_base__token__struct { |
| uint64_t repr; |
| |
| #ifdef __cplusplus |
| inline int64_t value() const; |
| inline int64_t value_extension() const; |
| inline int64_t value_major() const; |
| inline int64_t value_base_category() const; |
| inline uint64_t value_minor() const; |
| inline uint64_t value_base_detail() const; |
| inline int64_t value_base_detail__sign_extended() const; |
| inline bool continued() const; |
| inline uint64_t length() const; |
| #endif // __cplusplus |
| |
| } wuffs_base__token; |
| |
| static inline wuffs_base__token // |
| wuffs_base__make_token(uint64_t repr) { |
| wuffs_base__token ret; |
| ret.repr = repr; |
| return ret; |
| } |
| |
| // -------- |
| |
| #define WUFFS_BASE__TOKEN__LENGTH__MAX_INCL 0xFFFF |
| |
| #define WUFFS_BASE__TOKEN__VALUE__SHIFT 17 |
| #define WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT 17 |
| #define WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT 42 |
| #define WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT 17 |
| #define WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT 38 |
| #define WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT 17 |
| #define WUFFS_BASE__TOKEN__CONTINUED__SHIFT 16 |
| #define WUFFS_BASE__TOKEN__LENGTH__SHIFT 0 |
| |
| #define WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS 46 |
| |
| // -------- |
| |
| #define WUFFS_BASE__TOKEN__VBC__FILLER 0 |
| #define WUFFS_BASE__TOKEN__VBC__STRUCTURE 1 |
| #define WUFFS_BASE__TOKEN__VBC__STRING 2 |
| #define WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT 3 |
| #define WUFFS_BASE__TOKEN__VBC__LITERAL 4 |
| #define WUFFS_BASE__TOKEN__VBC__NUMBER 5 |
| #define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED 6 |
| #define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED 7 |
| |
| // -------- |
| |
| #define WUFFS_BASE__TOKEN__VBD__FILLER__PUNCTUATION 0x00001 |
| #define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_BLOCK 0x00002 |
| #define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_LINE 0x00004 |
| |
| // COMMENT_ANY is a bit-wise or of COMMENT_BLOCK AND COMMENT_LINE. |
| #define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_ANY 0x00006 |
| |
| // -------- |
| |
| #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH 0x00001 |
| #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP 0x00002 |
| #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE 0x00010 |
| #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST 0x00020 |
| #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT 0x00040 |
| #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE 0x01000 |
| #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST 0x02000 |
| #define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT 0x04000 |
| |
| // -------- |
| |
| // DEFINITELY_FOO means that the destination bytes (and also the source bytes, |
| // for 1_DST_1_SRC_COPY) are in the FOO format. Definitely means that the lack |
| // of the bit means "maybe FOO". It does not necessarily mean "not FOO". |
| // |
| // CHAIN_ETC means that decoding the entire token chain forms a UTF-8 or ASCII |
| // string, not just this current token. CHAIN_ETC_UTF_8 therefore distinguishes |
| // Unicode (UTF-8) strings from byte strings. MUST means that the the token |
| // producer (e.g. parser) must verify this. SHOULD means that the token |
| // consumer (e.g. renderer) should verify this. |
| // |
| // When a CHAIN_ETC_UTF_8 bit is set, the parser must ensure that non-ASCII |
| // code points (with multi-byte UTF-8 encodings) do not straddle token |
| // boundaries. Checking UTF-8 validity can inspect each token separately. |
| // |
| // The lack of any particular bit is conservative: it is valid for all-ASCII |
| // strings, in a single- or multi-token chain, to have none of these bits set. |
| #define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_UTF_8 0x00001 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8 0x00002 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_UTF_8 0x00004 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_ASCII 0x00010 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_ASCII 0x00020 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_ASCII 0x00040 |
| |
| // CONVERT_D_DST_S_SRC means that multiples of S source bytes (possibly padded) |
| // produces multiples of D destination bytes. For example, |
| // CONVERT_1_DST_4_SRC_BACKSLASH_X means a source like "\\x23\\x67\\xAB", where |
| // 12 src bytes encode 3 dst bytes. |
| // |
| // Post-processing may further transform those D destination bytes (e.g. treat |
| // "\\xFF" as the Unicode code point U+00FF instead of the byte 0xFF), but that |
| // is out of scope of this VBD's semantics. |
| // |
| // When src is the empty string, multiple conversion algorithms are applicable |
| // (so these bits are not necessarily mutually exclusive), all producing the |
| // same empty dst string. |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP 0x00100 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY 0x00200 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_2_SRC_HEXADECIMAL 0x00400 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_4_SRC_BACKSLASH_X 0x00800 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_STD 0x01000 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_URL 0x02000 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_4_DST_5_SRC_ASCII_85 0x04000 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_HEX 0x08000 |
| #define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_STD 0x10000 |
| |
| // -------- |
| |
| #define WUFFS_BASE__TOKEN__VBD__LITERAL__UNDEFINED 0x00001 |
| #define WUFFS_BASE__TOKEN__VBD__LITERAL__NULL 0x00002 |
| #define WUFFS_BASE__TOKEN__VBD__LITERAL__FALSE 0x00004 |
| #define WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE 0x00008 |
| |
| // -------- |
| |
| // For a source string of "123" or "0x9A", it is valid for a tokenizer to |
| // return any combination of: |
| // - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT. |
| // - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED. |
| // - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED. |
| // |
| // For a source string of "+123" or "-0x9A", only the first two are valid. |
| // |
| // For a source string of "123.", only the first one is valid. |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT 0x00001 |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED 0x00002 |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED 0x00004 |
| |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_INF 0x00010 |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_INF 0x00020 |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_NAN 0x00040 |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_NAN 0x00080 |
| |
| // The number 300 might be represented as "\x01\x2C", "\x2C\x01\x00\x00" or |
| // "300", which are big-endian, little-endian or text. For binary formats, the |
| // token length (after adjusting for FORMAT_IGNORE_ETC) discriminates |
| // e.g. u16 little-endian vs u32 little-endian. |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN 0x00100 |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_LITTLE_ENDIAN 0x00200 |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT 0x00400 |
| |
| #define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE 0x01000 |
| |
| // -------- |
| |
| // wuffs_base__token__value returns the token's high 46 bits, sign-extended. A |
| // negative value means an extended token, non-negative means a simple token. |
| static inline int64_t // |
| wuffs_base__token__value(const wuffs_base__token* t) { |
| return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE__SHIFT; |
| } |
| |
| // wuffs_base__token__value_extension returns a negative value if the token was |
| // not an extended token. |
| static inline int64_t // |
| wuffs_base__token__value_extension(const wuffs_base__token* t) { |
| return (~(int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT; |
| } |
| |
| // wuffs_base__token__value_major returns a negative value if the token was not |
| // a simple token. |
| static inline int64_t // |
| wuffs_base__token__value_major(const wuffs_base__token* t) { |
| return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT; |
| } |
| |
| // wuffs_base__token__value_base_category returns a negative value if the token |
| // was not a simple token. |
| static inline int64_t // |
| wuffs_base__token__value_base_category(const wuffs_base__token* t) { |
| return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__token__value_minor(const wuffs_base__token* t) { |
| return (t->repr >> WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) & 0x1FFFFFF; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__token__value_base_detail(const wuffs_base__token* t) { |
| return (t->repr >> WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT) & 0x1FFFFF; |
| } |
| |
| static inline int64_t // |
| wuffs_base__token__value_base_detail__sign_extended( |
| const wuffs_base__token* t) { |
| // The VBD is 21 bits in the middle of t->repr. Left shift the high (64 - 21 |
| // - ETC__SHIFT) bits off, then right shift (sign-extending) back down. |
| uint64_t u = t->repr << (43 - WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT); |
| return ((int64_t)u) >> 43; |
| } |
| |
| static inline bool // |
| wuffs_base__token__continued(const wuffs_base__token* t) { |
| return t->repr & 0x10000; |
| } |
| |
| static inline uint64_t // |
| wuffs_base__token__length(const wuffs_base__token* t) { |
| return (t->repr >> WUFFS_BASE__TOKEN__LENGTH__SHIFT) & 0xFFFF; |
| } |
| |
| #ifdef __cplusplus |
| |
| inline int64_t // |
| wuffs_base__token::value() const { |
| return wuffs_base__token__value(this); |
| } |
| |
| inline int64_t // |
| wuffs_base__token::value_extension() const { |
| return wuffs_base__token__value_extension(this); |
| } |
| |
| inline int64_t // |
| wuffs_base__token::value_major() const { |
| return wuffs_base__token__value_major(this); |
| } |
| |
|