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webp: fix memory leak

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The "S" format specifier for Py_BuildValue *increases* the object
reference count.
This commit is contained in:
Benoit Pierre 2015-02-23 06:00:41 +01:00
parent 3d5dd3b4fc
commit 4930b66aa9
1 changed files with 17 additions and 6 deletions
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23
_webp.c
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@ -138,7 +138,7 @@ PyObject* WebPDecode_wrapper(PyObject* self, PyObject* args)
PyBytesObject *webp_string; PyBytesObject *webp_string;
const uint8_t *webp; const uint8_t *webp;
Py_ssize_t size; Py_ssize_t size;
PyObject *ret, *bytes, *pymode, *icc_profile = Py_None, *exif = Py_None; PyObject *ret = Py_None, *bytes = NULL, *pymode = NULL, *icc_profile = NULL, *exif = NULL;
WebPDecoderConfig config; WebPDecoderConfig config;
VP8StatusCode vp8_status_code = VP8_STATUS_OK; VP8StatusCode vp8_status_code = VP8_STATUS_OK;
char* mode = "RGB"; char* mode = "RGB";
@ -194,10 +194,8 @@ PyObject* WebPDecode_wrapper(PyObject* self, PyObject* args)
#endif #endif
} }
if (vp8_status_code != VP8_STATUS_OK) { if (vp8_status_code != VP8_STATUS_OK)
WebPFreeDecBuffer(&config.output); goto end;
Py_RETURN_NONE;
}
if (config.output.colorspace < MODE_YUV) { if (config.output.colorspace < MODE_YUV) {
bytes = PyBytes_FromStringAndSize((char *)config.output.u.RGBA.rgba, bytes = PyBytes_FromStringAndSize((char *)config.output.u.RGBA.rgba,
@ -215,8 +213,21 @@ PyObject* WebPDecode_wrapper(PyObject* self, PyObject* args)
pymode = PyString_FromString(mode); pymode = PyString_FromString(mode);
#endif #endif
ret = Py_BuildValue("SiiSSS", bytes, config.output.width, ret = Py_BuildValue("SiiSSS", bytes, config.output.width,
config.output.height, pymode, icc_profile, exif); config.output.height, pymode,
NULL == icc_profile ? Py_None : icc_profile,
NULL == exif ? Py_None : exif);
end:
WebPFreeDecBuffer(&config.output); WebPFreeDecBuffer(&config.output);
Py_XDECREF(bytes);
Py_XDECREF(pymode);
Py_XDECREF(icc_profile);
Py_XDECREF(exif);
if (Py_None == ret)
Py_RETURN_NONE;
return ret; return ret;
} }