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Diffstat (limited to 'llama.cpp/ggml/include/gguf.h')
| -rw-r--r-- | llama.cpp/ggml/include/gguf.h | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/llama.cpp/ggml/include/gguf.h b/llama.cpp/ggml/include/gguf.h new file mode 100644 index 0000000..79ee202 --- /dev/null +++ b/llama.cpp/ggml/include/gguf.h @@ -0,0 +1,202 @@ +// This file contains functionality related to "GGUF" files, the binary file format used by ggml. +// GGUF files have the following structure: +// +// 1. File magic "GGUF" (4 bytes). +// 2. File version (uint32_t). +// 3. Number of ggml tensors in file (int64_t). +// 4. Number of key-value-pairs in file (int64_t). +// 5. For each KV pair: +// 1. The key (string). +// 2. The value type (gguf_type). +// 3a. If the value type is GGUF_TYPE_ARRAY: +// 1. The type of the array (gguf_type). +// 2. The number of elements in the array (uint64_t). +// 3. The binary representation of each element in the array. +// 3b. Otherwise: +// 1. The binary representation of the value. +// 6. For each ggml tensor: +// 1. The tensor name (string). +// 2. The number of dimensions of the tensor (uint32_t). +// 3. For each dimension: +// 1. The size of the tensor in the dimension (int64_t). +// 4. The tensor data type (ggml_type). +// 5. The tensor data offset in the tensor data binary blob (uint64_t). +// 7. The tensor data binary blob (optional, aligned). +// +// Strings are serialized as the string length (uint64_t) followed by the C string without the null terminator. +// All enums are stored as int32_t. +// All bool values are stored as int8_t. +// If the special key "general.alignment" (uint32_t) is defined it is used for alignment, +// otherwise GGUF_DEFAULT_ALIGNMENT is used. +// +// Module maintainer: Johannes Gäßler (@JohannesGaessler, johannesg@5d6.de) + +#pragma once + +#include "ggml.h" + +#include <stdbool.h> +#include <stdint.h> + +#define GGUF_MAGIC "GGUF" +#define GGUF_VERSION 3 + +#define GGUF_KEY_GENERAL_ALIGNMENT "general.alignment" + +#define GGUF_DEFAULT_ALIGNMENT 32 + +#ifdef __cplusplus +extern "C" { +#endif + + // types that can be stored as GGUF KV data + enum gguf_type { + GGUF_TYPE_UINT8 = 0, + GGUF_TYPE_INT8 = 1, + GGUF_TYPE_UINT16 = 2, + GGUF_TYPE_INT16 = 3, + GGUF_TYPE_UINT32 = 4, + GGUF_TYPE_INT32 = 5, + GGUF_TYPE_FLOAT32 = 6, + GGUF_TYPE_BOOL = 7, + GGUF_TYPE_STRING = 8, + GGUF_TYPE_ARRAY = 9, + GGUF_TYPE_UINT64 = 10, + GGUF_TYPE_INT64 = 11, + GGUF_TYPE_FLOAT64 = 12, + GGUF_TYPE_COUNT, // marks the end of the enum + }; + + struct gguf_context; + + struct gguf_init_params { + bool no_alloc; + + // if not NULL, create a ggml_context and allocate the tensor data in it + struct ggml_context ** ctx; + }; + + GGML_API struct gguf_context * gguf_init_empty(void); + GGML_API struct gguf_context * gguf_init_from_file(const char * fname, struct gguf_init_params params); + //GGML_API struct gguf_context * gguf_init_from_buffer(..); + + GGML_API void gguf_free(struct gguf_context * ctx); + + GGML_API const char * gguf_type_name(enum gguf_type type); + + GGML_API uint32_t gguf_get_version (const struct gguf_context * ctx); + GGML_API size_t gguf_get_alignment (const struct gguf_context * ctx); + GGML_API size_t gguf_get_data_offset(const struct gguf_context * ctx); + + GGML_API int64_t gguf_get_n_kv(const struct gguf_context * ctx); + GGML_API int64_t gguf_find_key(const struct gguf_context * ctx, const char * key); // returns -1 if key is not found + GGML_API const char * gguf_get_key (const struct gguf_context * ctx, int64_t key_id); + + GGML_API enum gguf_type gguf_get_kv_type (const struct gguf_context * ctx, int64_t key_id); + GGML_API enum gguf_type gguf_get_arr_type(const struct gguf_context * ctx, int64_t key_id); + + // will abort if the wrong type is used for the key + GGML_API uint8_t gguf_get_val_u8 (const struct gguf_context * ctx, int64_t key_id); + GGML_API int8_t gguf_get_val_i8 (const struct gguf_context * ctx, int64_t key_id); + GGML_API uint16_t gguf_get_val_u16 (const struct gguf_context * ctx, int64_t key_id); + GGML_API int16_t gguf_get_val_i16 (const struct gguf_context * ctx, int64_t key_id); + GGML_API uint32_t gguf_get_val_u32 (const struct gguf_context * ctx, int64_t key_id); + GGML_API int32_t gguf_get_val_i32 (const struct gguf_context * ctx, int64_t key_id); + GGML_API float gguf_get_val_f32 (const struct gguf_context * ctx, int64_t key_id); + GGML_API uint64_t gguf_get_val_u64 (const struct gguf_context * ctx, int64_t key_id); + GGML_API int64_t gguf_get_val_i64 (const struct gguf_context * ctx, int64_t key_id); + GGML_API double gguf_get_val_f64 (const struct gguf_context * ctx, int64_t key_id); + GGML_API bool gguf_get_val_bool(const struct gguf_context * ctx, int64_t key_id); + GGML_API const char * gguf_get_val_str (const struct gguf_context * ctx, int64_t key_id); + GGML_API const void * gguf_get_val_data(const struct gguf_context * ctx, int64_t key_id); + GGML_API size_t gguf_get_arr_n (const struct gguf_context * ctx, int64_t key_id); + + // get raw pointer to the first element of the array with the given key_id + // for bool arrays, note that they are always stored as int8 on all platforms (usually this makes no difference) + GGML_API const void * gguf_get_arr_data(const struct gguf_context * ctx, int64_t key_id); + + // get ith C string from array with given key_id + GGML_API const char * gguf_get_arr_str (const struct gguf_context * ctx, int64_t key_id, size_t i); + + GGML_API int64_t gguf_get_n_tensors (const struct gguf_context * ctx); + GGML_API int64_t gguf_find_tensor (const struct gguf_context * ctx, const char * name); // returns -1 if the tensor is not found + GGML_API size_t gguf_get_tensor_offset(const struct gguf_context * ctx, int64_t tensor_id); + GGML_API const char * gguf_get_tensor_name (const struct gguf_context * ctx, int64_t tensor_id); + GGML_API enum ggml_type gguf_get_tensor_type (const struct gguf_context * ctx, int64_t tensor_id); + GGML_API size_t gguf_get_tensor_size (const struct gguf_context * ctx, int64_t tensor_id); + + // removes key if it exists, returns id that the key had prior to removal (-1 if it didn't exist) + GGML_API int64_t gguf_remove_key(struct gguf_context * ctx, const char * key); + + // overrides an existing KV pair or adds a new one, the new KV pair is always at the back + GGML_API void gguf_set_val_u8 (struct gguf_context * ctx, const char * key, uint8_t val); + GGML_API void gguf_set_val_i8 (struct gguf_context * ctx, const char * key, int8_t val); + GGML_API void gguf_set_val_u16 (struct gguf_context * ctx, const char * key, uint16_t val); + GGML_API void gguf_set_val_i16 (struct gguf_context * ctx, const char * key, int16_t val); + GGML_API void gguf_set_val_u32 (struct gguf_context * ctx, const char * key, uint32_t val); + GGML_API void gguf_set_val_i32 (struct gguf_context * ctx, const char * key, int32_t val); + GGML_API void gguf_set_val_f32 (struct gguf_context * ctx, const char * key, float val); + GGML_API void gguf_set_val_u64 (struct gguf_context * ctx, const char * key, uint64_t val); + GGML_API void gguf_set_val_i64 (struct gguf_context * ctx, const char * key, int64_t val); + GGML_API void gguf_set_val_f64 (struct gguf_context * ctx, const char * key, double val); + GGML_API void gguf_set_val_bool(struct gguf_context * ctx, const char * key, bool val); + GGML_API void gguf_set_val_str (struct gguf_context * ctx, const char * key, const char * val); + + // creates a new array with n elements of the given type and copies the corresponding number of bytes from data + GGML_API void gguf_set_arr_data(struct gguf_context * ctx, const char * key, enum gguf_type type, const void * data, size_t n); + + // creates a new array with n strings and copies the corresponding strings from data + GGML_API void gguf_set_arr_str (struct gguf_context * ctx, const char * key, const char ** data, size_t n); + + // set or add KV pairs from another context + GGML_API void gguf_set_kv(struct gguf_context * ctx, const struct gguf_context * src); + + // add tensor to GGUF context, tensor name must be unique + GGML_API void gguf_add_tensor(struct gguf_context * ctx, const struct ggml_tensor * tensor); + + // after changing a tensor's type, the offsets of all tensors with higher indices are immediately recalculated + // in such a way that the tensor data remains as one contiguous block (except for padding) + GGML_API void gguf_set_tensor_type(struct gguf_context * ctx, const char * name, enum ggml_type type); + + // assumes that at least gguf_get_tensor_size bytes can be read from data + GGML_API void gguf_set_tensor_data(struct gguf_context * ctx, const char * name, const void * data); + + // writing gguf files can be done in 3 ways: + // + // - write the entire gguf_context to a binary file in a single pass: + // + // gguf_write_to_file(ctx, fname, /*only_meta =*/ false); + // + // - write only the meta data to a file, then re-open the file and append the tensor data: + // + // gguf_write_to_file(ctx, fname, /*only_meta =*/ true); + // FILE * f = fopen(fname, "ab"); + // fwrite(f, ...); // write tensor data + // fclose(f); + // + // - first prepare a file with a placeholder for the meta data, write the tensor data, then write the meta data: + // + // FILE * f = fopen(fname, "wb"); + // const size_t size_meta = gguf_get_meta_size(ctx); + // fseek(f, size_meta, SEEK_SET); + // fwrite(f, ...); // write tensor data + // void * data = malloc(size_meta); + // gguf_get_meta_data(ctx, data); + // rewind(f); + // fwrite(data, 1, data, f); + // free(data); + // fclose(f); + // + + // write the entire context to a binary file + GGML_API bool gguf_write_to_file(const struct gguf_context * ctx, const char * fname, bool only_meta); + + // get the size in bytes of the meta data (header, kv pairs, tensor info) including padding + GGML_API size_t gguf_get_meta_size(const struct gguf_context * ctx); + + // writes the meta data to pointer "data" + GGML_API void gguf_get_meta_data(const struct gguf_context * ctx, void * data); + +#ifdef __cplusplus +} +#endif |