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/*
* Copyright (c) 2009 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 "media/base/codec.h"
#include "rtc_base/gunit.h"
using cricket::AudioCodec;
using cricket::Codec;
using cricket::DataCodec;
using cricket::FeedbackParam;
using cricket::VideoCodec;
using cricket::kCodecParamAssociatedPayloadType;
using cricket::kCodecParamMaxBitrate;
using cricket::kCodecParamMinBitrate;
class TestCodec : public Codec {
public:
TestCodec(int id, const std::string& name, int clockrate)
: Codec(id, name, clockrate) {}
TestCodec() : Codec() {}
TestCodec(const TestCodec& c) : Codec(c) {}
};
TEST(CodecTest, TestCodecOperators) {
TestCodec c0(96, "D", 1000);
c0.SetParam("a", 1);
TestCodec c1 = c0;
EXPECT_TRUE(c1 == c0);
int param_value0;
int param_value1;
EXPECT_TRUE(c0.GetParam("a", &param_value0));
EXPECT_TRUE(c1.GetParam("a", &param_value1));
EXPECT_EQ(param_value0, param_value1);
c1.id = 86;
EXPECT_TRUE(c0 != c1);
c1 = c0;
c1.name = "x";
EXPECT_TRUE(c0 != c1);
c1 = c0;
c1.clockrate = 2000;
EXPECT_TRUE(c0 != c1);
c1 = c0;
c1.SetParam("a", 2);
EXPECT_TRUE(c0 != c1);
TestCodec c5;
TestCodec c6(0, "", 0);
EXPECT_TRUE(c5 == c6);
}
TEST(CodecTest, TestAudioCodecOperators) {
AudioCodec c0(96, "A", 44100, 20000, 2);
AudioCodec c1(95, "A", 44100, 20000, 2);
AudioCodec c2(96, "x", 44100, 20000, 2);
AudioCodec c3(96, "A", 48000, 20000, 2);
AudioCodec c4(96, "A", 44100, 10000, 2);
AudioCodec c5(96, "A", 44100, 20000, 1);
EXPECT_NE(c0, c1);
EXPECT_NE(c0, c2);
EXPECT_NE(c0, c3);
EXPECT_NE(c0, c4);
EXPECT_NE(c0, c5);
AudioCodec c7;
AudioCodec c8(0, "", 0, 0, 0);
AudioCodec c9 = c0;
EXPECT_EQ(c8, c7);
EXPECT_NE(c9, c7);
EXPECT_EQ(c9, c0);
AudioCodec c10(c0);
AudioCodec c11(c0);
AudioCodec c12(c0);
AudioCodec c13(c0);
c10.params["x"] = "abc";
c11.params["x"] = "def";
c12.params["y"] = "abc";
c13.params["x"] = "abc";
EXPECT_NE(c10, c0);
EXPECT_NE(c11, c0);
EXPECT_NE(c11, c10);
EXPECT_NE(c12, c0);
EXPECT_NE(c12, c10);
EXPECT_NE(c12, c11);
EXPECT_EQ(c13, c10);
}
TEST(CodecTest, TestAudioCodecMatches) {
// Test a codec with a static payload type.
AudioCodec c0(95, "A", 44100, 20000, 1);
EXPECT_TRUE(c0.Matches(AudioCodec(95, "", 44100, 20000, 1)));
EXPECT_TRUE(c0.Matches(AudioCodec(95, "", 44100, 20000, 0)));
EXPECT_TRUE(c0.Matches(AudioCodec(95, "", 44100, 0, 0)));
EXPECT_TRUE(c0.Matches(AudioCodec(95, "", 0, 0, 0)));
EXPECT_FALSE(c0.Matches(AudioCodec(96, "", 44100, 20000, 1)));
EXPECT_FALSE(c0.Matches(AudioCodec(95, "", 55100, 20000, 1)));
EXPECT_FALSE(c0.Matches(AudioCodec(95, "", 44100, 30000, 1)));
EXPECT_FALSE(c0.Matches(AudioCodec(95, "", 44100, 20000, 2)));
EXPECT_FALSE(c0.Matches(AudioCodec(95, "", 55100, 30000, 2)));
// Test a codec with a dynamic payload type.
AudioCodec c1(96, "A", 44100, 20000, 1);
EXPECT_TRUE(c1.Matches(AudioCodec(96, "A", 0, 0, 0)));
EXPECT_TRUE(c1.Matches(AudioCodec(97, "A", 0, 0, 0)));
EXPECT_TRUE(c1.Matches(AudioCodec(96, "a", 0, 0, 0)));
EXPECT_TRUE(c1.Matches(AudioCodec(97, "a", 0, 0, 0)));
EXPECT_FALSE(c1.Matches(AudioCodec(95, "A", 0, 0, 0)));
EXPECT_FALSE(c1.Matches(AudioCodec(96, "", 44100, 20000, 2)));
EXPECT_FALSE(c1.Matches(AudioCodec(96, "A", 55100, 30000, 1)));
// Test a codec with a dynamic payload type, and auto bitrate.
AudioCodec c2(97, "A", 16000, 0, 1);
// Use default bitrate.
EXPECT_TRUE(c2.Matches(AudioCodec(97, "A", 16000, 0, 1)));
EXPECT_TRUE(c2.Matches(AudioCodec(97, "A", 16000, 0, 0)));
// Use explicit bitrate.
EXPECT_TRUE(c2.Matches(AudioCodec(97, "A", 16000, 32000, 1)));
// Backward compatibility with clients that might send "-1" (for default).
EXPECT_TRUE(c2.Matches(AudioCodec(97, "A", 16000, -1, 1)));
// Stereo doesn't match channels = 0.
AudioCodec c3(96, "A", 44100, 20000, 2);
EXPECT_TRUE(c3.Matches(AudioCodec(96, "A", 44100, 20000, 2)));
EXPECT_FALSE(c3.Matches(AudioCodec(96, "A", 44100, 20000, 1)));
EXPECT_FALSE(c3.Matches(AudioCodec(96, "A", 44100, 20000, 0)));
}
TEST(CodecTest, TestVideoCodecOperators) {
VideoCodec c0(96, "V");
VideoCodec c1(95, "V");
VideoCodec c2(96, "x");
EXPECT_TRUE(c0 != c1);
EXPECT_TRUE(c0 != c2);
VideoCodec c7;
VideoCodec c8(0, "");
VideoCodec c9 = c0;
EXPECT_TRUE(c8 == c7);
EXPECT_TRUE(c9 != c7);
EXPECT_TRUE(c9 == c0);
VideoCodec c10(c0);
VideoCodec c11(c0);
VideoCodec c12(c0);
VideoCodec c13(c0);
c10.params["x"] = "abc";
c11.params["x"] = "def";
c12.params["y"] = "abc";
c13.params["x"] = "abc";
EXPECT_TRUE(c10 != c0);
EXPECT_TRUE(c11 != c0);
EXPECT_TRUE(c11 != c10);
EXPECT_TRUE(c12 != c0);
EXPECT_TRUE(c12 != c10);
EXPECT_TRUE(c12 != c11);
EXPECT_TRUE(c13 == c10);
}
TEST(CodecTest, TestVideoCodecMatches) {
// Test a codec with a static payload type.
VideoCodec c0(95, "V");
EXPECT_TRUE(c0.Matches(VideoCodec(95, "")));
EXPECT_FALSE(c0.Matches(VideoCodec(96, "")));
// Test a codec with a dynamic payload type.
VideoCodec c1(96, "V");
EXPECT_TRUE(c1.Matches(VideoCodec(96, "V")));
EXPECT_TRUE(c1.Matches(VideoCodec(97, "V")));
EXPECT_TRUE(c1.Matches(VideoCodec(96, "v")));
EXPECT_TRUE(c1.Matches(VideoCodec(97, "v")));
EXPECT_FALSE(c1.Matches(VideoCodec(96, "")));
EXPECT_FALSE(c1.Matches(VideoCodec(95, "V")));
}
// Matching H264 codecs also need to have matching profile-level-id and
// packetization-mode.
TEST(CodecTest, TestH264CodecMatches) {
const char kProfileLevelId1[] = "42e01f";
const char kProfileLevelId2[] = "42a01e";
VideoCodec pli_1_pm_0(95, "H264");
pli_1_pm_0.params[cricket::kH264FmtpProfileLevelId] = kProfileLevelId1;
pli_1_pm_0.params[cricket::kH264FmtpPacketizationMode] = "0";
{
VideoCodec pli_1_pm_blank(95, "H264");
pli_1_pm_blank.params[cricket::kH264FmtpProfileLevelId] = kProfileLevelId1;
pli_1_pm_blank.params.erase(
pli_1_pm_blank.params.find(cricket::kH264FmtpPacketizationMode));
// Matches since if packetization-mode is not specified it defaults to "0".
EXPECT_TRUE(pli_1_pm_0.Matches(pli_1_pm_blank));
}
{
VideoCodec pli_1_pm_1(95, "H264");
pli_1_pm_1.params[cricket::kH264FmtpProfileLevelId] = kProfileLevelId1;
pli_1_pm_1.params[cricket::kH264FmtpPacketizationMode] = "1";
// Does not match since packetization-mode is different.
EXPECT_FALSE(pli_1_pm_0.Matches(pli_1_pm_1));
}
{
VideoCodec pli_2_pm_0(95, "H264");
pli_2_pm_0.params[cricket::kH264FmtpProfileLevelId] = kProfileLevelId2;
pli_2_pm_0.params[cricket::kH264FmtpPacketizationMode] = "0";
// Does not match since profile-level-id is different.
EXPECT_FALSE(pli_1_pm_0.Matches(pli_2_pm_0));
}
}
TEST(CodecTest, TestDataCodecMatches) {
// Test a codec with a static payload type.
DataCodec c0(95, "D");
EXPECT_TRUE(c0.Matches(DataCodec(95, "")));
EXPECT_FALSE(c0.Matches(DataCodec(96, "")));
// Test a codec with a dynamic payload type.
DataCodec c1(96, "D");
EXPECT_TRUE(c1.Matches(DataCodec(96, "D")));
EXPECT_TRUE(c1.Matches(DataCodec(97, "D")));
EXPECT_TRUE(c1.Matches(DataCodec(96, "d")));
EXPECT_TRUE(c1.Matches(DataCodec(97, "d")));
EXPECT_FALSE(c1.Matches(DataCodec(96, "")));
EXPECT_FALSE(c1.Matches(DataCodec(95, "D")));
}
TEST(CodecTest, TestSetParamGetParamAndRemoveParam) {
AudioCodec codec;
codec.SetParam("a", "1");
codec.SetParam("b", "x");
int int_value = 0;
EXPECT_TRUE(codec.GetParam("a", &int_value));
EXPECT_EQ(1, int_value);
EXPECT_FALSE(codec.GetParam("b", &int_value));
EXPECT_FALSE(codec.GetParam("c", &int_value));
std::string str_value;
EXPECT_TRUE(codec.GetParam("a", &str_value));
EXPECT_EQ("1", str_value);
EXPECT_TRUE(codec.GetParam("b", &str_value));
EXPECT_EQ("x", str_value);
EXPECT_FALSE(codec.GetParam("c", &str_value));
EXPECT_TRUE(codec.RemoveParam("a"));
EXPECT_FALSE(codec.RemoveParam("c"));
}
TEST(CodecTest, TestIntersectFeedbackParams) {
const FeedbackParam a1("a", "1");
const FeedbackParam b2("b", "2");
const FeedbackParam b3("b", "3");
const FeedbackParam c3("c", "3");
TestCodec c1;
c1.AddFeedbackParam(a1); // Only match with c2.
c1.AddFeedbackParam(b2); // Same param different values.
c1.AddFeedbackParam(c3); // Not in c2.
TestCodec c2;
c2.AddFeedbackParam(a1);
c2.AddFeedbackParam(b3);
c1.IntersectFeedbackParams(c2);
EXPECT_TRUE(c1.HasFeedbackParam(a1));
EXPECT_FALSE(c1.HasFeedbackParam(b2));
EXPECT_FALSE(c1.HasFeedbackParam(c3));
}
TEST(CodecTest, TestGetCodecType) {
// Codec type comparison should be case insenstive on names.
const VideoCodec codec(96, "V");
const VideoCodec rtx_codec(96, "rTx");
const VideoCodec ulpfec_codec(96, "ulpFeC");
const VideoCodec flexfec_codec(96, "FlExFeC-03");
const VideoCodec red_codec(96, "ReD");
EXPECT_EQ(VideoCodec::CODEC_VIDEO, codec.GetCodecType());
EXPECT_EQ(VideoCodec::CODEC_RTX, rtx_codec.GetCodecType());
EXPECT_EQ(VideoCodec::CODEC_ULPFEC, ulpfec_codec.GetCodecType());
EXPECT_EQ(VideoCodec::CODEC_FLEXFEC, flexfec_codec.GetCodecType());
EXPECT_EQ(VideoCodec::CODEC_RED, red_codec.GetCodecType());
}
TEST(CodecTest, TestCreateRtxCodec) {
VideoCodec rtx_codec = VideoCodec::CreateRtxCodec(96, 120);
EXPECT_EQ(96, rtx_codec.id);
EXPECT_EQ(VideoCodec::CODEC_RTX, rtx_codec.GetCodecType());
int associated_payload_type;
ASSERT_TRUE(rtx_codec.GetParam(kCodecParamAssociatedPayloadType,
&associated_payload_type));
EXPECT_EQ(120, associated_payload_type);
}
TEST(CodecTest, TestValidateCodecFormat) {
const VideoCodec codec(96, "V");
ASSERT_TRUE(codec.ValidateCodecFormat());
// Accept 0-127 as payload types.
VideoCodec low_payload_type = codec;
low_payload_type.id = 0;
VideoCodec high_payload_type = codec;
high_payload_type.id = 127;
ASSERT_TRUE(low_payload_type.ValidateCodecFormat());
EXPECT_TRUE(high_payload_type.ValidateCodecFormat());
// Reject negative payloads.
VideoCodec negative_payload_type = codec;
negative_payload_type.id = -1;
EXPECT_FALSE(negative_payload_type.ValidateCodecFormat());
// Reject too-high payloads.
VideoCodec too_high_payload_type = codec;
too_high_payload_type.id = 128;
EXPECT_FALSE(too_high_payload_type.ValidateCodecFormat());
// Reject codecs with min bitrate > max bitrate.
VideoCodec incorrect_bitrates = codec;
incorrect_bitrates.params[kCodecParamMinBitrate] = "100";
incorrect_bitrates.params[kCodecParamMaxBitrate] = "80";
EXPECT_FALSE(incorrect_bitrates.ValidateCodecFormat());
// Accept min bitrate == max bitrate.
VideoCodec equal_bitrates = codec;
equal_bitrates.params[kCodecParamMinBitrate] = "100";
equal_bitrates.params[kCodecParamMaxBitrate] = "100";
EXPECT_TRUE(equal_bitrates.ValidateCodecFormat());
// Accept min bitrate < max bitrate.
VideoCodec different_bitrates = codec;
different_bitrates.params[kCodecParamMinBitrate] = "99";
different_bitrates.params[kCodecParamMaxBitrate] = "100";
EXPECT_TRUE(different_bitrates.ValidateCodecFormat());
}
TEST(CodecTest, TestToCodecParameters) {
const VideoCodec v(96, "V");
webrtc::RtpCodecParameters codec_params_1 = v.ToCodecParameters();
EXPECT_EQ(96, codec_params_1.payload_type);
EXPECT_EQ(cricket::MEDIA_TYPE_VIDEO, codec_params_1.kind);
EXPECT_EQ("V", codec_params_1.name);
EXPECT_EQ(cricket::kVideoCodecClockrate, codec_params_1.clock_rate);
EXPECT_EQ(rtc::nullopt, codec_params_1.num_channels);
const AudioCodec a(97, "A", 44100, 20000, 2);
webrtc::RtpCodecParameters codec_params_2 = a.ToCodecParameters();
EXPECT_EQ(97, codec_params_2.payload_type);
EXPECT_EQ(cricket::MEDIA_TYPE_AUDIO, codec_params_2.kind);
EXPECT_EQ("A", codec_params_2.name);
EXPECT_EQ(44100, codec_params_2.clock_rate);
EXPECT_EQ(2, codec_params_2.num_channels);
}