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Address Clag Analyzer issues.

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Following are the issues related to NetEq 4, discovered by Clang Analyzer.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-b44b95.html#EndPath
Valid; perhaps unlikely, addressed.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-6beef6.html#EndPath
Valid, addressed.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-2e3883.html#EndPath
Valid; Addressed

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-293659.html#EndPath
Valid; Addressed.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-b875cd.html#EndPath
Valid; Addressed.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/index.html
Not valid;

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-86f2ed.html#EndPath
Not Valid; the assert statement will be short-circuited, however I also added a check of nullity of |packet|.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-3a5669.html#EndPath
Not Valid: |energy_input| and |energy_expand| are both non-negative, therefore if-statement condition on line 226 is not satisfied unless |energy_input| >= 1. Therefore |energy_input| cannot be zero after normalization to 14-bits, i.e. operations on lines 228 & 229.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-2f914f.html#EndPath
Valid; addressed.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-2332b1.html#EndPath
Valid; addressed.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-de8dea.html#EndPath
Not valid; |out_len| is set when Process() is called, however, it makes sense to initialize to zero when declaring |out_len|.

https://x20web.corp.google.com/~pbos/scan-build-2013-10-10-1/report-b671a3.html#EndPath
Valid; addressed.

BUG=
R=henrik.lundin@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2729005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5064 4adac7df-926f-26a2-2b94-8c16560cd09d
This commit is contained in:
turaj@webrtc.org 2013-10-31 15:15:55 +00:00
parent 7d6bd22019
commit 58cd31665c
6 changed files with 31 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
webrtc/modules/audio_coding/neteq4/expand.cc
View File

@ -415,9 +415,11 @@ void Expand::AnalyzeSignal(int16_t* random_vector) {
// Calculate correlation in downsampled domain (4 kHz sample rate).
int16_t correlation_scale;
int correlation_length = Correlation(audio_history, signal_length,
correlation_vector, &correlation_scale);
correlation_length = 51; // TODO(hlundin): Legacy bit-exactness.
int correlation_length = 51; // TODO(hlundin): Legacy bit-exactness.
// If it is decided to break bit-exactness |correlation_length| should be
// initialized to the return value of Correlation().
Correlation(audio_history, signal_length, correlation_vector,
&correlation_scale);
// Find peaks in correlation vector.
DspHelper::PeakDetection(correlation_vector, correlation_length,
@ -449,7 +451,7 @@ void Expand::AnalyzeSignal(int16_t* random_vector) {
// Find the maximizing index |i| of the cost function
// f[i] = best_correlation[i] / best_distortion[i].
int32_t best_ratio = -1;
int32_t best_ratio = std::numeric_limits<int32_t>::min();
int best_index = -1;
for (int i = 0; i < kNumCorrelationCandidates; ++i) {
int32_t ratio;

9
webrtc/modules/audio_coding/neteq4/neteq_impl.cc
View File

@ -1259,6 +1259,7 @@ int NetEqImpl::DecodeLoop(PacketList* packet_list, Operations* operation,
delete[] packet->payload;
delete packet;
packet = NULL;
if (decode_length > 0) {
*decoded_length += decode_length;
// Update |decoder_frame_length_| with number of samples per channel.
@ -1287,10 +1288,10 @@ int NetEqImpl::DecodeLoop(PacketList* packet_list, Operations* operation,
}
} // End of decode loop.
// If the list is not empty at this point, it must hold exactly one CNG
// packet.
assert(packet_list->empty() ||
(packet_list->size() == 1 &&
// If the list is not empty at this point, either a decoding error terminated
// the while-loop, or list must hold exactly one CNG packet.
assert(packet_list->empty() || *decoded_length < 0 ||
(packet_list->size() == 1 && packet &&
decoder_database_->IsComfortNoise(packet->header.payloadType)));
return 0;
}

5
webrtc/modules/audio_coding/neteq4/neteq_unittest.cc
View File

@ -330,7 +330,7 @@ void NetEqDecodingTest::DecodeAndCompare(const std::string &rtp_file,
std::ostringstream ss;
ss << "Lap number " << i++ << " in DecodeAndCompare while loop";
SCOPED_TRACE(ss.str()); // Print out the parameter values on failure.
int out_len;
int out_len = 0;
ASSERT_NO_FATAL_FAILURE(Process(&rtp, &out_len));
ASSERT_NO_FATAL_FAILURE(ref_files.ProcessReference(out_data_, out_len));
}
@ -583,7 +583,6 @@ TEST_F(NetEqDecodingTest, DISABLED_ON_ANDROID(TestFrameWaitingTimeStatistics)) {
std::vector<int> waiting_times;
neteq_->WaitingTimes(&waiting_times);
int len = waiting_times.size();
EXPECT_EQ(num_frames, waiting_times.size());
// Since all frames are dumped into NetEQ at once, but pulled out with 10 ms
// spacing (per definition), we expect the delay to increase with 10 ms for
@ -594,7 +593,7 @@ TEST_F(NetEqDecodingTest, DISABLED_ON_ANDROID(TestFrameWaitingTimeStatistics)) {
// Check statistics again and make sure it's been reset.
neteq_->WaitingTimes(&waiting_times);
len = waiting_times.size();
int len = waiting_times.size();
EXPECT_EQ(0, len);
// Process > 100 frames, and make sure that that we get statistics

1
webrtc/modules/audio_coding/neteq4/payload_splitter.cc
View File

@ -331,7 +331,6 @@ void PayloadSplitter::SplitBySamples(const Packet* packet,
new_packet->primary = packet->primary;
new_packet->payload = new uint8_t[len];
memcpy(new_packet->payload, payload_ptr, len);
payload_ptr += len;
new_packets->push_back(new_packet);
}
}

2
webrtc/modules/audio_coding/neteq4/test/RTPencode.cc
View File

@ -1618,7 +1618,7 @@ int NetEQTest_encode(int coder, int16_t *indata, int frameLen, unsigned char * e
#ifdef CODEC_G722
else if (coder==webrtc::kDecoderG722) { /*g722 */
cdlen=WebRtcG722_Encode(g722EncState[k], indata, frameLen, (int16_t*)encoded);
cdlen=frameLen>>1;
assert(cdlen == frameLen>>1);
}
#endif
#ifdef CODEC_ILBC

19
webrtc/modules/audio_coding/neteq4/test/RTPjitter.cc
View File

@ -64,7 +64,9 @@ int main(int argc, char* argv[])
unsigned int dat_len, rtp_len, Npack, k;
arr_time *time_vec;
char firstline[FIRSTLINELEN];
unsigned char *rtp_vec = NULL, **packet_ptr, *temp_packet;
unsigned char* rtp_vec = NULL;
unsigned char** packet_ptr = NULL;
unsigned char* temp_packet = NULL;
const unsigned int kRtpDumpHeaderSize = 4 + 4 + 4 + 2 + 2;
uint16_t len;
uint32_t *offset;
@ -113,6 +115,11 @@ int main(int argc, char* argv[])
dat_len++;
}
if (dat_len == 0) {
fprintf(stderr, "Error: dat_file is empty, no arrival time is given.\n");
goto closing;
}
qsort(time_vec,dat_len,sizeof(arr_time),compare_arr_time);
@ -146,6 +153,11 @@ int main(int argc, char* argv[])
len=(uint16_t) fread(&rtp_vec[rtp_len], sizeof(unsigned char), 2, in_file); // read length of next packet
}
if (Npack == 0) {
fprintf(stderr, "Error: No RTP packet found.\n");
goto closing;
}
packet_ptr = (unsigned char **) malloc(Npack*sizeof(unsigned char*));
packet_ptr[0]=rtp_vec;
@ -182,7 +194,10 @@ int main(int argc, char* argv[])
closing:
free(time_vec);
free(rtp_vec);
fclose(in_file);
if (packet_ptr != NULL) {
free(packet_ptr);
}
fclose(in_file);
fclose(dat_file);
fclose(out_file);