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/*
* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/modules/audio_coding/main/acm2/acm_opus.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/modules/audio_coding/main/acm2/acm_codec_database.h"
namespace webrtc {
namespace acm2 {
namespace {
const CodecInst kOpusCodecInst = {105, "opus", 48000, 960, 1, 32000};
// These constants correspond to those used in ACMOpus::SetPacketLossRate().
const int kPacketLossRate20 = 20;
const int kPacketLossRate10 = 10;
const int kPacketLossRate5 = 5;
const int kPacketLossRate1 = 1;
const int kLossRate20Margin = 2;
const int kLossRate10Margin = 1;
const int kLossRate5Margin = 1;
} // namespace
class AcmOpusTest : public ACMOpus {
public:
explicit AcmOpusTest(int16_t codec_id)
: ACMOpus(codec_id) {}
~AcmOpusTest() {}
int packet_loss_rate() { return packet_loss_rate_; }
void TestSetPacketLossRate(int from, int to, int expected_return);
};
#ifdef WEBRTC_CODEC_OPUS
void AcmOpusTest::TestSetPacketLossRate(int from, int to, int expected_return) {
for (int loss = from; loss <= to; (to >= from) ? ++loss : --loss) {
EXPECT_EQ(0, SetPacketLossRate(loss));
EXPECT_EQ(expected_return, packet_loss_rate());
}
}
TEST(AcmOpusTest, PacketLossRateOptimized) {
AcmOpusTest opus(ACMCodecDB::kOpus);
WebRtcACMCodecParams params;
memcpy(&(params.codec_inst), &kOpusCodecInst, sizeof(CodecInst));
EXPECT_EQ(0, opus.InitEncoder(¶ms, true));
EXPECT_EQ(0, opus.SetFEC(true));
// Note that the order of the following calls is critical.
opus.TestSetPacketLossRate(0, 0, 0);
opus.TestSetPacketLossRate(kPacketLossRate1,
kPacketLossRate5 + kLossRate5Margin - 1,
kPacketLossRate1);
opus.TestSetPacketLossRate(kPacketLossRate5 + kLossRate5Margin,
kPacketLossRate10 + kLossRate10Margin - 1,
kPacketLossRate5);
opus.TestSetPacketLossRate(kPacketLossRate10 + kLossRate10Margin,
kPacketLossRate20 + kLossRate20Margin - 1,
kPacketLossRate10);
opus.TestSetPacketLossRate(kPacketLossRate20 + kLossRate20Margin,
100,
kPacketLossRate20);
opus.TestSetPacketLossRate(kPacketLossRate20 + kLossRate20Margin,
kPacketLossRate20 - kLossRate20Margin,
kPacketLossRate20);
opus.TestSetPacketLossRate(kPacketLossRate20 - kLossRate20Margin - 1,
kPacketLossRate10 - kLossRate10Margin,
kPacketLossRate10);
opus.TestSetPacketLossRate(kPacketLossRate10 - kLossRate10Margin - 1,
kPacketLossRate5 - kLossRate5Margin,
kPacketLossRate5);
opus.TestSetPacketLossRate(kPacketLossRate5 - kLossRate5Margin - 1,
kPacketLossRate1,
kPacketLossRate1);
opus.TestSetPacketLossRate(0, 0, 0);
}
#else
void AcmOpusTest:TestSetPacketLossRate(int /* from */, int /* to */,
int /* expected_return */) {
return;
}
#endif // WEBRTC_CODEC_OPUS
} // namespace acm2
} // namespace webrtc
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