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release python GIL during WEBP encode

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This commit is contained in:
Zeev Tarantov 2020-02-17 22:56:30 +02:00
parent 26b5b30a38
commit 7df7cb25ee
1 changed files with 19 additions and 0 deletions
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19
src/_webp.c
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@ -21,6 +21,16 @@
#endif
void ImagingSectionEnter(ImagingSectionCookie* cookie)
{
*cookie = (PyThreadState *) PyEval_SaveThread();
}
void ImagingSectionLeave(ImagingSectionCookie* cookie)
{
PyEval_RestoreThread((PyThreadState*) *cookie);
}
/* -------------------------------------------------------------------- */
/* WebP Muxer Error Handling */
/* -------------------------------------------------------------------- */
@ -555,6 +565,7 @@ PyObject* WebPEncode_wrapper(PyObject* self, PyObject* args)
Py_ssize_t exif_size;
Py_ssize_t xmp_size;
size_t ret_size;
ImagingSectionCookie cookie;
if (!PyArg_ParseTuple(args, "y#iiifss#s#s#",
(char**)&rgb, &size, &width, &height, &lossless, &quality_factor, &mode,
@ -567,11 +578,15 @@ PyObject* WebPEncode_wrapper(PyObject* self, PyObject* args)
}
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
if (lossless) {
ImagingSectionEnter(&cookie);
ret_size = WebPEncodeLosslessRGBA(rgb, width, height, 4 * width, &output);
ImagingSectionLeave(&cookie);
} else
#endif
{
ImagingSectionEnter(&cookie);
ret_size = WebPEncodeRGBA(rgb, width, height, 4 * width, quality_factor, &output);
ImagingSectionLeave(&cookie);
}
} else if (strcmp(mode, "RGB")==0){
if (size < width * height * 3){
@ -579,11 +594,15 @@ PyObject* WebPEncode_wrapper(PyObject* self, PyObject* args)
}
#if WEBP_ENCODER_ABI_VERSION >= 0x0100
if (lossless) {
ImagingSectionEnter(&cookie);
ret_size = WebPEncodeLosslessRGB(rgb, width, height, 3 * width, &output);
ImagingSectionLeave(&cookie);
} else
#endif
{
ImagingSectionEnter(&cookie);
ret_size = WebPEncodeRGB(rgb, width, height, 3 * width, quality_factor, &output);
ImagingSectionLeave(&cookie);
}
} else {
Py_RETURN_NONE;