| File: | _portaudiomodule.c |
| Function: | pa_read_stream |
| Error: | ob_refcnt of new ref from call to Py_BuildValue is 1 too high |
2198 static PyObject *
2199 pa_read_stream(PyObject *self, PyObject *args)
2200 {
2201 int err;
2202 int total_frames;
2203 short *sampleBlock;
2204 int num_bytes;
2205 PyObject *rv;
2206
2207 PyObject *stream_arg;
2208 _pyAudio_Stream *streamObject;
2209
2210 if (!PyArg_ParseTuple(args, "O!i",
when PyArg_ParseTuple() succeeds
taking False path
2211 &_pyAudio_StreamType,
2212 &stream_arg,
2213 &total_frames))
2214 return NULL;
2215
2216 /* make sure value is positive! */
2217 if (total_frames < 0) {
when considering range: 0 <= value <= 0x7fffffff
taking False path
2218 PyErr_SetString(PyExc_ValueError, "Invalid number of frames");
2219 return NULL;
2220 }
2221
2222 streamObject = (_pyAudio_Stream *) stream_arg;
2223
2224 if (!_is_open(streamObject)) {
when considering range: 1 <= value <= 0x7fffffff
taking False path
2225 PyErr_SetObject(PyExc_IOError,
2226 Py_BuildValue("(s,i)",
2227 "Stream closed",
2228 paBadStreamPtr));
2229 return NULL;
2230 }
2231
2232 PaStream *stream = streamObject->stream;
2233 PaStreamParameters *inputParameters = streamObject->inputParameters;
2234 num_bytes = (total_frames) * (inputParameters->channelCount) *
when treating unknown struct PaStreamParameters * from _portaudiomodule.c:2233 as non-NULL
2235 (Pa_GetSampleSize(inputParameters->sampleFormat));
2236
2237 #ifdef VERBOSE
2238 fprintf(stderr, "Allocating %d bytes\n", num_bytes);
2239 #endif
2240
2241 rv = PyString_FromStringAndSize(NULL, num_bytes);
when PyString_FromStringAndSize() succeeds
2242 sampleBlock = (short *) PyString_AsString(rv);
PyString_AsString() returns ob_sval
2243
2244 if (sampleBlock == NULL) {
taking False path
2245 PyErr_SetObject(PyExc_IOError,
2246 Py_BuildValue("(s,i)",
2247 "Out of memory",
2248 paInsufficientMemory));
2249 return NULL;
2250 }
2251
2252 Py_BEGIN_ALLOW_THREADS
releasing the GIL by calling PyEval_SaveThread()
2253 err = Pa_ReadStream(stream, sampleBlock, total_frames);
2254 Py_END_ALLOW_THREADS
reacquiring the GIL by calling PyEval_RestoreThread()
2255
2256 if (err != paNoError) {
when considering range: 1 <= value <= 0x7fffffff
taking True path
2257
2258 /* ignore input overflow and output underflow */
2259 if (err & paInputOverflowed) {
taking True path
2260
2261 #ifdef VERBOSE
2262 fprintf(stderr, "Input Overflow.\n");
2263 #endif
2264
2265 } else if (err & paOutputUnderflowed) {
2266
2267 #ifdef VERBOSE
2268 fprintf(stderr, "Output Underflow.\n");
2269 #endif
2270
2271 } else {
2272 /* clean up */
2273 _cleanup_Stream_object(streamObject);
2274 }
2275
2276 /* free the string buffer */
2277 Py_XDECREF(rv);
taking False path
when taking False path
calling tp_dealloc on PyStringObject allocated at _portaudiomodule.c:2241
2278
2279 PyErr_SetObject(PyExc_IOError,
when Py_BuildValue() succeeds
calling PyErr_SetObject()
new ref from call to Py_BuildValue allocated at: PyErr_SetObject(PyExc_IOError,
ob_refcnt is now refs: 1 + N where N >= 0
ob_refcnt is now refs: 1 + N where N >= 1
2280 Py_BuildValue("(s,i)",
2281 Pa_GetErrorText(err), err));
2282 return NULL;
2283 }
2284
2285 return rv;
2286 }
ob_refcnt of new ref from call to Py_BuildValue is 1 too high
was expecting final ob_refcnt to be N + 0 (for some unknown N)
but final ob_refcnt is N + 1
found 8 similar trace(s) to this
| File: | _portaudiomodule.c |
| Function: | pa_read_stream |
| Error: | calling PyString_AsString with NULL as argument 1 (rv) at _portaudiomodule.c:2242 |
2198 static PyObject *
2199 pa_read_stream(PyObject *self, PyObject *args)
2200 {
2201 int err;
2202 int total_frames;
2203 short *sampleBlock;
2204 int num_bytes;
2205 PyObject *rv;
2206
2207 PyObject *stream_arg;
2208 _pyAudio_Stream *streamObject;
2209
2210 if (!PyArg_ParseTuple(args, "O!i",
when PyArg_ParseTuple() succeeds
taking False path
2211 &_pyAudio_StreamType,
2212 &stream_arg,
2213 &total_frames))
2214 return NULL;
2215
2216 /* make sure value is positive! */
2217 if (total_frames < 0) {
when considering range: 0 <= value <= 0x7fffffff
taking False path
2218 PyErr_SetString(PyExc_ValueError, "Invalid number of frames");
2219 return NULL;
2220 }
2221
2222 streamObject = (_pyAudio_Stream *) stream_arg;
2223
2224 if (!_is_open(streamObject)) {
when considering range: -0x80000000 <= value <= -1
taking False path
2225 PyErr_SetObject(PyExc_IOError,
2226 Py_BuildValue("(s,i)",
2227 "Stream closed",
2228 paBadStreamPtr));
2229 return NULL;
2230 }
2231
2232 PaStream *stream = streamObject->stream;
2233 PaStreamParameters *inputParameters = streamObject->inputParameters;
2234 num_bytes = (total_frames) * (inputParameters->channelCount) *
when treating unknown struct PaStreamParameters * from _portaudiomodule.c:2233 as non-NULL
2235 (Pa_GetSampleSize(inputParameters->sampleFormat));
2236
2237 #ifdef VERBOSE
2238 fprintf(stderr, "Allocating %d bytes\n", num_bytes);
2239 #endif
2240
2241 rv = PyString_FromStringAndSize(NULL, num_bytes);
when PyString_FromStringAndSize() fails
2242 sampleBlock = (short *) PyString_AsString(rv);
calling PyString_AsString with NULL as argument 1 (rv) at _portaudiomodule.c:2242
PyString_AsString() invokes Py_TYPE() on the pointer via the PyString_Check() macro, thus accessing (NULL)->ob_type
2243
2244 if (sampleBlock == NULL) {
2245 PyErr_SetObject(PyExc_IOError,
2246 Py_BuildValue("(s,i)",
2247 "Out of memory",
2248 paInsufficientMemory));
2249 return NULL;
2250 }
2251
2252 Py_BEGIN_ALLOW_THREADS
2253 err = Pa_ReadStream(stream, sampleBlock, total_frames);
2254 Py_END_ALLOW_THREADS
2255
2256 if (err != paNoError) {
2257
2258 /* ignore input overflow and output underflow */
2259 if (err & paInputOverflowed) {
2260
2261 #ifdef VERBOSE
2262 fprintf(stderr, "Input Overflow.\n");
2263 #endif
2264
2265 } else if (err & paOutputUnderflowed) {
2266
2267 #ifdef VERBOSE
2268 fprintf(stderr, "Output Underflow.\n");
2269 #endif
2270
2271 } else {
2272 /* clean up */
2273 _cleanup_Stream_object(streamObject);
2274 }
2275
2276 /* free the string buffer */
2277 Py_XDECREF(rv);
2278
2279 PyErr_SetObject(PyExc_IOError,
2280 Py_BuildValue("(s,i)",
2281 Pa_GetErrorText(err), err));
2282 return NULL;
2283 }
2284
2285 return rv;
2286 }