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Use member names to initialize PyTypeObject

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This commit is contained in:
Andrew Murray 2025-05-09 19:26:26 +10:00
parent 6c3f0b5ad2
commit 80e9963dcd
1 changed files with 22 additions and 50 deletions
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72
src/_jpegxl.c
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@ -37,34 +37,40 @@ char *
_pil_jxl_get_mode(const JxlBasicInfo *bi) {
// 16-bit single channel images are supported
if (bi->bits_per_sample == 16 && bi->num_color_channels == 1 &&
bi->alpha_bits == 0 && !bi->alpha_premultiplied)
bi->alpha_bits == 0 && !bi->alpha_premultiplied) {
return "I;16";
}
// PIL doesn't support high bit depth images
// it will throw an exception but that's for your own good
// you wouldn't want to see distorted image
if (bi->bits_per_sample != 8)
if (bi->bits_per_sample != 8) {
return "uns";
}
// image has transparency
if (bi->alpha_bits > 0) {
if (bi->num_color_channels == 3) {
if (bi->alpha_premultiplied)
if (bi->alpha_premultiplied) {
return "RGBa";
}
return "RGBA";
}
if (bi->num_color_channels == 1) {
if (bi->alpha_premultiplied)
if (bi->alpha_premultiplied) {
return "La";
}
return "LA";
}
}
// image has no transparency
if (bi->num_color_channels == 3)
if (bi->num_color_channels == 3) {
return "RGB";
if (bi->num_color_channels == 1)
}
if (bi->num_color_channels == 1) {
return "L";
}
// could not recognize mode
return NULL;
@ -168,7 +174,6 @@ _jxl_decoder_count_frames(PyObject *self) {
// count all JXL_DEC_NEED_IMAGE_OUT_BUFFER events
while (decp->status != JXL_DEC_SUCCESS) {
// printf("fetch_frame_count status: %u\n", decp->status);
decp->status = JxlDecoderProcessInput(decp->decoder);
if (decp->status == JXL_DEC_NEED_IMAGE_OUT_BUFFER) {
@ -226,8 +231,6 @@ _jxl_decoder_new(PyObject *self, PyObject *args) {
memcpy(decp->jxl_data, _tmp_jxl_data, _tmp_jxl_data_len);
decp->jxl_data_len = _tmp_jxl_data_len;
// printf("%zu\n", decp->jxl_data_len);
size_t suggested_num_threads = JxlThreadParallelRunnerDefaultNumWorkerThreads();
decp->runner = JxlThreadParallelRunnerCreate(NULL, suggested_num_threads);
decp->decoder = JxlDecoderCreate(NULL);
@ -254,7 +257,6 @@ _jxl_decoder_new(PyObject *self, PyObject *args) {
// decode everything up to the first frame
do {
decp->status = JxlDecoderProcessInput(decp->decoder);
// printf("Status: %d\n", decp->status);
decoder_loop_skip_process:
@ -312,9 +314,6 @@ decoder_loop_skip_process:
decp->status = JxlDecoderGetBoxType(decp->decoder, btype, JXL_TRUE);
_PIL_JXL_CHECK("JxlDecoderGetBoxType");
// printf("found box type: %c%c%c%c\n", btype[0], btype[1], btype[2],
// btype[3]);
bool is_box_exif, is_box_xmp;
is_box_exif = !memcmp(btype, "Exif", 4);
is_box_xmp = !memcmp(btype, "xml ", 4);
@ -326,7 +325,6 @@ decoder_loop_skip_process:
size_t cur_compr_box_size;
decp->status = JxlDecoderGetBoxSizeRaw(decp->decoder, &cur_compr_box_size);
_PIL_JXL_CHECK("JxlDecoderGetBoxSizeRaw");
// printf("Exif/xmp box size: %zu\n", cur_compr_box_size);
uint8_t *final_jxl_buf = NULL;
Py_ssize_t final_jxl_buf_len = 0;
@ -350,8 +348,6 @@ decoder_loop_skip_process:
decp->status = JxlDecoderProcessInput(decp->decoder);
size_t remaining = JxlDecoderReleaseBoxBuffer(decp->decoder);
// printf("boxes status: %d, remaining: %zu\n", decp->status,
// remaining);
final_jxl_buf_len += (cur_compr_box_size - remaining);
} while (decp->status == JXL_DEC_BOX_NEED_MORE_OUTPUT);
@ -385,7 +381,6 @@ decoder_loop_skip_process:
}
return (PyObject *)decp;
// Py_RETURN_NONE;
// on success we should never reach here
@ -525,8 +520,9 @@ PyObject *
_jxl_decoder_get_icc(PyObject *self) {
PILJpegXlDecoderObject *decp = (PILJpegXlDecoderObject *)self;
if (!decp->jxl_icc)
if (!decp->jxl_icc) {
Py_RETURN_NONE;
}
return PyBytes_FromStringAndSize((const char *)decp->jxl_icc, decp->jxl_icc_len);
}
@ -535,8 +531,9 @@ PyObject *
_jxl_decoder_get_exif(PyObject *self) {
PILJpegXlDecoderObject *decp = (PILJpegXlDecoderObject *)self;
if (!decp->jxl_exif)
if (!decp->jxl_exif) {
Py_RETURN_NONE;
}
return PyBytes_FromStringAndSize((const char *)decp->jxl_exif, decp->jxl_exif_len);
}
@ -545,8 +542,9 @@ PyObject *
_jxl_decoder_get_xmp(PyObject *self) {
PILJpegXlDecoderObject *decp = (PILJpegXlDecoderObject *)self;
if (!decp->jxl_xmp)
if (!decp->jxl_xmp) {
Py_RETURN_NONE;
}
return PyBytes_FromStringAndSize((const char *)decp->jxl_xmp, decp->jxl_xmp_len);
}
@ -564,36 +562,10 @@ static struct PyMethodDef _jpegxl_decoder_methods[] = {
// PILJpegXlDecoder type definition
static PyTypeObject PILJpegXlDecoder_Type = {
PyVarObject_HEAD_INIT(NULL, 0) "PILJpegXlDecoder", /*tp_name */
sizeof(PILJpegXlDecoderObject), /*tp_basicsize */
0, /*tp_itemsize */
/* methods */
(destructor)_jxl_decoder_dealloc, /*tp_dealloc*/
0, /*tp_vectorcall_offset*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_as_async*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash*/
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/
0, /*tp_doc*/
0, /*tp_traverse*/
0, /*tp_clear*/
0, /*tp_richcompare*/
0, /*tp_weaklistoffset*/
0, /*tp_iter*/
0, /*tp_iternext*/
_jpegxl_decoder_methods, /*tp_methods*/
0, /*tp_members*/
0, /*tp_getset*/
PyVarObject_HEAD_INIT(NULL, 0).tp_name = "PILJpegXlDecoder",
.tp_basicsize = sizeof(PILJpegXlDecoderObject),
.tp_dealloc = (destructor)_jxl_decoder_dealloc,
.tp_methods = _jpegxl_decoder_methods,
};
// Return libjxl decoder version available as integer: