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import os
from ctypes import (
c_bool,
c_char_p,
c_int,
c_uint8,
c_uint32,
c_float,
c_void_p,
c_size_t,
POINTER,
_Pointer, # type: ignore
Structure,
byref,
)
import pathlib
from typing import (
Union,
NewType,
Optional,
TYPE_CHECKING,
)
import llama_cpp.llama_cpp as llama_cpp
from llama_cpp._ctypes_extensions import (
load_shared_library,
ctypes_function_for_shared_library,
)
if TYPE_CHECKING:
from llama_cpp._ctypes_extensions import (
CtypesArray,
)
# Specify the base name of the shared library to load
_libmtmd_base_name = "mtmd"
_libmtmd_override_path = os.environ.get("MTMD_CPP_LIB")
_libmtmd_base_path = pathlib.Path(os.path.abspath(os.path.dirname(__file__))) / "lib" if _libmtmd_override_path is None else pathlib.Path()
# Load the library
_libmtmd = load_shared_library(_libmtmd_base_name, _libmtmd_base_path)
ctypes_function = ctypes_function_for_shared_library(_libmtmd)
################################################
# mtmd.h types
################################################
# Opaque types
mtmd_context_p = NewType("mtmd_context_p", int)
mtmd_context_p_ctypes = c_void_p
mtmd_bitmap_p = NewType("mtmd_bitmap_p", int)
mtmd_bitmap_p_ctypes = c_void_p
mtmd_image_tokens_p = NewType("mtmd_image_tokens_p", int)
mtmd_image_tokens_p_ctypes = c_void_p
mtmd_input_chunk_p = NewType("mtmd_input_chunk_p", int)
mtmd_input_chunk_p_ctypes = c_void_p
mtmd_input_chunks_p = NewType("mtmd_input_chunks_p", int)
mtmd_input_chunks_p_ctypes = c_void_p
# Enums
MTMD_INPUT_CHUNK_TYPE_TEXT = 0
MTMD_INPUT_CHUNK_TYPE_IMAGE = 1
MTMD_INPUT_CHUNK_TYPE_AUDIO = 2
# Structures
class mtmd_context_params(Structure):
_fields_ = [
("use_gpu", c_bool),
("print_timings", c_bool),
("n_threads", c_int),
("verbosity", c_int), # ggml_log_level
("image_marker", c_char_p),
("media_marker", c_char_p),
]
class mtmd_input_text(Structure):
_fields_ = [
("text", c_char_p),
("add_special", c_bool),
("parse_special", c_bool),
]
################################################
# mtmd.h functions
################################################
# MTMD_API const char * mtmd_default_marker(void);
@ctypes_function("mtmd_default_marker", [], c_char_p)
def mtmd_default_marker() -> bytes:
...
# MTMD_API struct mtmd_context_params mtmd_context_params_default(void);
@ctypes_function("mtmd_context_params_default", [], mtmd_context_params)
def mtmd_context_params_default() -> mtmd_context_params:
...
# MTMD_API mtmd_context * mtmd_init_from_file(const char * mmproj_fname,
# const struct llama_model * text_model,
# const struct mtmd_context_params ctx_params);
@ctypes_function(
"mtmd_init_from_file",
[c_char_p, llama_cpp.llama_model_p_ctypes, mtmd_context_params],
mtmd_context_p_ctypes
)
def mtmd_init_from_file(
mmproj_fname: bytes,
text_model: llama_cpp.llama_model_p,
ctx_params: mtmd_context_params,
/,
) -> Optional[mtmd_context_p]:
...
# MTMD_API void mtmd_free(mtmd_context * ctx);
@ctypes_function("mtmd_free", [mtmd_context_p_ctypes], None)
def mtmd_free(ctx: mtmd_context_p, /):
...
# MTMD_API bool mtmd_support_vision(mtmd_context * ctx);
@ctypes_function("mtmd_support_vision", [mtmd_context_p_ctypes], c_bool)
def mtmd_support_vision(ctx: mtmd_context_p, /) -> bool:
...
# MTMD_API mtmd_bitmap * mtmd_bitmap_init(uint32_t nx, uint32_t ny, const unsigned char * data);
@ctypes_function(
"mtmd_bitmap_init",
[c_uint32, c_uint32, POINTER(c_uint8)],
mtmd_bitmap_p_ctypes
)
def mtmd_bitmap_init(
nx: Union[c_uint32, int],
ny: Union[c_uint32, int],
data: CtypesArray[c_uint8],
/,
) -> Optional[mtmd_bitmap_p]:
...
# MTMD_API void mtmd_bitmap_free(mtmd_bitmap * bitmap);
@ctypes_function("mtmd_bitmap_free", [mtmd_bitmap_p_ctypes], None)
def mtmd_bitmap_free(bitmap: mtmd_bitmap_p, /):
...
# MTMD_API mtmd_input_chunks * mtmd_input_chunks_init(void);
@ctypes_function("mtmd_input_chunks_init", [], mtmd_input_chunks_p_ctypes)
def mtmd_input_chunks_init() -> Optional[mtmd_input_chunks_p]:
...
# MTMD_API void mtmd_input_chunks_free(mtmd_input_chunks * chunks);
@ctypes_function("mtmd_input_chunks_free", [mtmd_input_chunks_p_ctypes], None)
def mtmd_input_chunks_free(chunks: mtmd_input_chunks_p, /):
...
# MTMD_API size_t mtmd_input_chunks_size(const mtmd_input_chunks * chunks);
@ctypes_function("mtmd_input_chunks_size", [mtmd_input_chunks_p_ctypes], c_size_t)
def mtmd_input_chunks_size(chunks: mtmd_input_chunks_p, /) -> int:
...
# MTMD_API const mtmd_input_chunk * mtmd_input_chunks_get(const mtmd_input_chunks * chunks, size_t idx);
@ctypes_function(
"mtmd_input_chunks_get",
[mtmd_input_chunks_p_ctypes, c_size_t],
mtmd_input_chunk_p_ctypes
)
def mtmd_input_chunks_get(
chunks: mtmd_input_chunks_p, idx: Union[c_size_t, int], /
) -> Optional[mtmd_input_chunk_p]:
...
# MTMD_API int32_t mtmd_tokenize(mtmd_context * ctx,
# mtmd_input_chunks * output,
# const mtmd_input_text * text,
# const mtmd_bitmap ** bitmaps,
# size_t n_bitmaps);
@ctypes_function(
"mtmd_tokenize",
[
mtmd_context_p_ctypes,
mtmd_input_chunks_p_ctypes,
POINTER(mtmd_input_text),
POINTER(mtmd_bitmap_p_ctypes),
c_size_t,
],
c_int,
)
def mtmd_tokenize(
ctx: mtmd_context_p,
output: mtmd_input_chunks_p,
text: "_Pointer[mtmd_input_text]",
bitmaps: CtypesArray[mtmd_bitmap_p_ctypes],
n_bitmaps: Union[c_size_t, int],
/,
) -> int:
...
# MTMD_API size_t mtmd_input_chunk_get_n_tokens(const mtmd_input_chunk * chunk);
@ctypes_function("mtmd_input_chunk_get_n_tokens", [mtmd_input_chunk_p_ctypes], c_size_t)
def mtmd_input_chunk_get_n_tokens(chunk: mtmd_input_chunk_p, /) -> int:
...
# MTMD_API enum mtmd_input_chunk_type mtmd_input_chunk_get_type(const mtmd_input_chunk * chunk);
@ctypes_function("mtmd_input_chunk_get_type", [mtmd_input_chunk_p_ctypes], c_int)
def mtmd_input_chunk_get_type(chunk: mtmd_input_chunk_p, /) -> int:
...
# MTMD_API const llama_token * mtmd_input_chunk_get_tokens_text(const mtmd_input_chunk * chunk, size_t * n_tokens_output);
@ctypes_function(
"mtmd_input_chunk_get_tokens_text",
[mtmd_input_chunk_p_ctypes, POINTER(c_size_t)],
POINTER(llama_cpp.llama_token)
)
def mtmd_input_chunk_get_tokens_text(
chunk: mtmd_input_chunk_p, n_tokens_output: "_Pointer[c_size_t]", /
) -> Optional["_Pointer[llama_cpp.llama_token]"]:
...
################################################
# mtmd-helper.h functions
################################################
# MTMD_API mtmd_bitmap * mtmd_helper_bitmap_init_from_buf(mtmd_context * ctx, const unsigned char * buf, size_t len);
@ctypes_function(
"mtmd_helper_bitmap_init_from_buf",
[mtmd_context_p_ctypes, POINTER(c_uint8), c_size_t],
mtmd_bitmap_p_ctypes
)
def mtmd_helper_bitmap_init_from_buf(
ctx: mtmd_context_p,
buf: CtypesArray[c_uint8],
length: Union[c_size_t, int],
/,
) -> Optional[mtmd_bitmap_p]:
...
# MTMD_API size_t mtmd_helper_get_n_tokens(const mtmd_input_chunks * chunks);
@ctypes_function("mtmd_helper_get_n_tokens", [mtmd_input_chunks_p_ctypes], c_size_t)
def mtmd_helper_get_n_tokens(chunks: mtmd_input_chunks_p, /) -> int:
...
# MTMD_API int32_t mtmd_helper_eval_chunk_single(mtmd_context * ctx,
# struct llama_context * lctx,
# const mtmd_input_chunk * chunk,
# llama_pos n_past,
# llama_seq_id seq_id,
# int32_t n_batch,
# bool logits_last,
# llama_pos * new_n_past);
@ctypes_function(
"mtmd_helper_eval_chunk_single",
[
mtmd_context_p_ctypes,
llama_cpp.llama_context_p_ctypes,
mtmd_input_chunk_p_ctypes,
llama_cpp.llama_pos,
llama_cpp.llama_seq_id,
c_int,
c_bool,
POINTER(llama_cpp.llama_pos),
],
c_int,
)
def mtmd_helper_eval_chunk_single(
ctx: mtmd_context_p,
lctx: llama_cpp.llama_context_p,
chunk: mtmd_input_chunk_p,
n_past: llama_cpp.llama_pos,
seq_id: llama_cpp.llama_seq_id,
n_batch: Union[c_int, int],
logits_last: Union[c_bool, bool],
new_n_past: "_Pointer[llama_cpp.llama_pos]",
/,
) -> int:
...
|