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Merge pull request #7782 from evanmiller/webp-get-next-without-gil

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Release GIL while calling `WebPAnimDecoderGetNext`
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Andrew Murray 2024-02-22 21:50:41 +11:00 committed by GitHub
commit f8a54b78a3
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2 changed files with 12 additions and 1 deletions
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6
docs/releasenotes/10.3.0.rst
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@ -79,3 +79,9 @@ Portable FloatMap (PFM) images
Support has been added for reading and writing grayscale (Pf format) Support has been added for reading and writing grayscale (Pf format)
Portable FloatMap (PFM) files containing ``F`` data. Portable FloatMap (PFM) files containing ``F`` data.
Release GIL when fetching WebP frames
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Python's Global Interpreter Lock is now released when fetching WebP frames from
the libwebp decoder.

7
src/_webp.c
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@ -448,11 +448,16 @@ PyObject *
_anim_decoder_get_next(PyObject *self) { _anim_decoder_get_next(PyObject *self) {
uint8_t *buf; uint8_t *buf;
int timestamp; int timestamp;
int ok;
PyObject *bytes; PyObject *bytes;
PyObject *ret; PyObject *ret;
ImagingSectionCookie cookie;
WebPAnimDecoderObject *decp = (WebPAnimDecoderObject *)self; WebPAnimDecoderObject *decp = (WebPAnimDecoderObject *)self;
if (!WebPAnimDecoderGetNext(decp->dec, &buf, &timestamp)) { ImagingSectionEnter(&cookie);
ok = WebPAnimDecoderGetNext(decp->dec, &buf, &timestamp);
ImagingSectionLeave(&cookie);
if (!ok) {
PyErr_SetString(PyExc_OSError, "failed to read next frame"); PyErr_SetString(PyExc_OSError, "failed to read next frame");
return NULL; return NULL;
} }