grok_codec.i.in

%module grok_codec

%{
#include "@GROK_CODEC_INCLUDE_PATH@/grok_codec.h"
%}

%include stdint.i

/* Typemap: convert Python list of strings to (int argc, const char* argv[])
   SWIG drops const from argv, so we use char** casts in the generated code. */
%typemap(in) (int argc, const char* argv[]) {
    if (!PyList_Check($input)) {
        PyErr_SetString(PyExc_TypeError, "Expected a list of strings");
        SWIG_fail;
    }
    $1 = (int)PyList_Size($input);
    $2 = (char**)malloc(($1 + 1) * sizeof(char*));
    if (!$2) {
        PyErr_NoMemory();
        SWIG_fail;
    }
    for (int i = 0; i < $1; i++) {
        PyObject* item = PyList_GetItem($input, i);
        if (!PyUnicode_Check(item)) {
            free($2);
            PyErr_SetString(PyExc_TypeError, "List items must be strings");
            SWIG_fail;
        }
        $2[i] = (char*)PyUnicode_AsUTF8(item);
        if (!$2[i]) {
            free($2);
            SWIG_fail;
        }
    }
    $2[$1] = NULL;
}

%typemap(freearg) (int argc, const char* argv[]) {
    free($2);
}

/* Opaque types from grok.h - allows passing None (mapped to NULL) */
typedef struct {} grk_image;
typedef struct {} grk_stream_params;

/* Codec functions */
int grk_codec_dump(int argc, const char* argv[]);
int grk_codec_compress(int argc, const char* argv[], grk_image* in_image,
                       grk_stream_params* out_buffer);
int grk_codec_decompress(int argc, const char* argv[]);
int grk_codec_compare_images(int argc, const char* argv[]);