diff --git a/libs/spandsp/src/libspandsp.2012.sln b/libs/spandsp/src/libspandsp.2012.sln
new file mode 100644
index 0000000000..c0cc75f4e3
--- /dev/null
+++ b/libs/spandsp/src/libspandsp.2012.sln
@@ -0,0 +1,318 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Express 2012 for Windows Desktop
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_at_dictionary", "msvc\make_at_dictionary.2012.vcxproj", "{DEE932AB-5911-4700-9EEB-8C7090A0A330}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_modem_filter", "msvc\make_modem_filter.2012.vcxproj", "{329A6FA0-0FCC-4435-A950-E670AEFA9838}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_t43_gray_code_tables", "msvc\make_t43_gray_code_tables.2012.vcxproj", "{EDDB8AB9-C53E-44C0-A620-0E86C2CBD5D5}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_cielab_luts", "msvc\make_cielab_luts.2012.vcxproj", "{85F0CF8C-C7AB-48F6-BA19-CC94CF87F981}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_math_fixed_tables", "msvc\make_math_fixed_tables.2012.vcxproj", "{2386B892-35F5-46CF-A0F0-10394D2FBF9B}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libspandsp", "libspandsp.2012.vcxproj", "{1CBB0077-18C5-455F-801C-0A0CE7B0BBF5}"
+	ProjectSection(ProjectDependencies) = postProject
+		{329A6FA0-0FCC-4435-A950-E670AEFA9838} = {329A6FA0-0FCC-4435-A950-E670AEFA9838}
+		{DEE932AB-5911-4700-9EEB-8C7090A0A330} = {DEE932AB-5911-4700-9EEB-8C7090A0A330}
+		{401A40CD-5DB4-4E34-AC68-FA99E9FAC014} = {401A40CD-5DB4-4E34-AC68-FA99E9FAC014}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "make_line_models", "..\spandsp-sim\msvc\make_line_models.2012.vcxproj", "{F290BADE-82DE-4037-B49D-D563E43169DA}"
+	ProjectSection(ProjectDependencies) = postProject
+		{1CBB0077-18C5-455F-801C-0A0CE7B0BBF5} = {1CBB0077-18C5-455F-801C-0A0CE7B0BBF5}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libspandsp_sim", "..\spandsp-sim\libspandsp_sim.2012.vcxproj", "{502F1E51-F0A0-4607-AB7F-05BAB530AAE1}"
+	ProjectSection(ProjectDependencies) = postProject
+		{1CBB0077-18C5-455F-801C-0A0CE7B0BBF5} = {1CBB0077-18C5-455F-801C-0A0CE7B0BBF5}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "download libjpeg", "msvc\download_libjpeg.2012.vcxproj", "{652AD5F7-8488-489F-AAD0-7FBE064703B6}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "download libtiff", "msvc\download_libtiff.2012.vcxproj", "{2B8A45C9-FEB4-4734-AB37-8DB9DB899917}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libjpeg", "msvc\libjpeg.2012.vcxproj", "{019DBD2A-273D-4BA4-BF86-B5EFE2ED76B1}"
+	ProjectSection(ProjectDependencies) = postProject
+		{652AD5F7-8488-489F-AAD0-7FBE064703B6} = {652AD5F7-8488-489F-AAD0-7FBE064703B6}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libtiff", "msvc\libtiff.2012.vcxproj", "{401A40CD-5DB4-4E34-AC68-FA99E9FAC014}"
+	ProjectSection(ProjectDependencies) = postProject
+		{019DBD2A-273D-4BA4-BF86-B5EFE2ED76B1} = {019DBD2A-273D-4BA4-BF86-B5EFE2ED76B1}
+		{652AD5F7-8488-489F-AAD0-7FBE064703B6} = {652AD5F7-8488-489F-AAD0-7FBE064703B6}
+		{2B8A45C9-FEB4-4734-AB37-8DB9DB899917} = {2B8A45C9-FEB4-4734-AB37-8DB9DB899917}
+	EndProjectSection
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "t38_core_tests", "..\tests\msvc\t38_core_tests.2012.vcxproj", "{A34A9D0E-A7E2-4A04-B044-7BB2FE709EF3}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "t38_non_ecm_buffer_tests", "..\tests\msvc\t38_non_ecm_buffer_tests.2012.vcxproj", "{80A3D9D9-3846-4DA5-8676-F940D725EA62}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "vector_int_tests", "..\tests\msvc\vector_int_tests.2012.vcxproj", "{80A60464-29E8-4EE8-BAFA-8708B7C08CC3}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "vector_float_tests", "..\tests\msvc\vector_float_tests.2012.vcxproj", "{EA745FF7-9E4B-4C13-BA19-2EE8165A6245}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "complex_tests", "..\tests\msvc\complex_tests.2012.vcxproj", "{A349379F-0FEA-49C8-9535-05F39663337B}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "complex_vector_float_tests", "..\tests\msvc\complex_vector_float_tests.2012.vcxproj", "{2B0D705C-1CF2-401C-BFBC-A43FB806908C}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "complex_vector_int_tests", "..\tests\msvc\complex_vector_int_tests.2012.vcxproj", "{C2E8B4D1-A398-4D57-94F8-B61F20C7D514}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "queue_tests", "..\tests\msvc\queue_tests.2012.vcxproj", "{D9C0F575-83E7-4C15-BF71-D7A0D44A26BF}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dtmf_tx_tests", "..\tests\msvc\dtmf_tx_tests.2012.vcxproj", "{1577F41D-9A06-45DD-87D4-9ADCC9CCDAD5}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "dtmf_rx_tests", "..\tests\msvc\dtmf_rx_tests.2012.vcxproj", "{24E7EF80-7854-4A21-80FB-31C4E71109DE}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "v29_tests", "..\tests\msvc\v29_tests.2012.vcxproj", "{323BD962-4581-4561-8105-8C166A9FA933}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "v80_tests", "..\tests\msvc\v80_tests.2012.vcxproj", "{10263F04-37DD-4E4A-AE4F-0641B018B714}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "v22bis_tests", "..\tests\msvc\v22bis_tests.2012.vcxproj", "{DA4DB99F-E5BA-48BD-BB6B-3595CE24CBAE}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "v8_tests", "..\tests\msvc\v8_tests.2012.vcxproj", "{0C69B8C2-0CE1-4CD4-870C-1C13FB3F9B34}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{C84E437E-9D4C-46C8-9724-DF301C849E61}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		All|Win32 = All|Win32
+		All|x64 = All|x64
+		Debug|Win32 = Debug|Win32
+		Debug|x64 = Debug|x64
+		Release|Win32 = Release|Win32
+		Release|x64 = Release|x64
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{DEE932AB-5911-4700-9EEB-8C7090A0A330}.All|Win32.ActiveCfg = All|Win32
+		{DEE932AB-5911-4700-9EEB-8C7090A0A330}.All|Win32.Build.0 = All|Win32
+		{DEE932AB-5911-4700-9EEB-8C7090A0A330}.All|x64.ActiveCfg = All|Win32
+		{DEE932AB-5911-4700-9EEB-8C7090A0A330}.Debug|Win32.ActiveCfg = All|Win32
+		{DEE932AB-5911-4700-9EEB-8C7090A0A330}.Debug|Win32.Build.0 = All|Win32
+		{DEE932AB-5911-4700-9EEB-8C7090A0A330}.Debug|x64.ActiveCfg = All|Win32
+		{DEE932AB-5911-4700-9EEB-8C7090A0A330}.Release|Win32.ActiveCfg = All|Win32
+		{DEE932AB-5911-4700-9EEB-8C7090A0A330}.Release|x64.ActiveCfg = All|Win32
+		{329A6FA0-0FCC-4435-A950-E670AEFA9838}.All|Win32.ActiveCfg = All|Win32
+		{329A6FA0-0FCC-4435-A950-E670AEFA9838}.All|Win32.Build.0 = All|Win32
+		{329A6FA0-0FCC-4435-A950-E670AEFA9838}.All|x64.ActiveCfg = All|Win32
+		{329A6FA0-0FCC-4435-A950-E670AEFA9838}.Debug|Win32.ActiveCfg = All|Win32
+		{329A6FA0-0FCC-4435-A950-E670AEFA9838}.Debug|Win32.Build.0 = All|Win32
+		{329A6FA0-0FCC-4435-A950-E670AEFA9838}.Debug|x64.ActiveCfg = All|Win32
+		{329A6FA0-0FCC-4435-A950-E670AEFA9838}.Release|Win32.ActiveCfg = All|Win32
+		{329A6FA0-0FCC-4435-A950-E670AEFA9838}.Release|x64.ActiveCfg = All|Win32
+		{1CBB0077-18C5-455F-801C-0A0CE7B0BBF5}.All|Win32.ActiveCfg = Release|x64
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+		{1CBB0077-18C5-455F-801C-0A0CE7B0BBF5}.Debug|Win32.ActiveCfg = Debug|Win32
+		{1CBB0077-18C5-455F-801C-0A0CE7B0BBF5}.Debug|Win32.Build.0 = Debug|Win32
+		{1CBB0077-18C5-455F-801C-0A0CE7B0BBF5}.Debug|x64.ActiveCfg = Debug|x64
+		{1CBB0077-18C5-455F-801C-0A0CE7B0BBF5}.Debug|x64.Build.0 = Debug|x64
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+		{401A40CD-5DB4-4E34-AC68-FA99E9FAC014}.Debug|Win32.ActiveCfg = Debug|Win32
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+		{401A40CD-5DB4-4E34-AC68-FA99E9FAC014}.Debug|x64.ActiveCfg = Debug|x64
+		{401A40CD-5DB4-4E34-AC68-FA99E9FAC014}.Debug|x64.Build.0 = Debug|x64
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new file mode 100644
index 0000000000..edbd29ebae
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deleted file mode 100644
index 3b1df8cd86..0000000000
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index 0000000000..4419ec5829
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new file mode 100644
index 0000000000..e2ac03f95e
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deleted file mode 100644
index 64e420dd58..0000000000
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new file mode 100644
index 0000000000..468f0b7d98
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new file mode 100644
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new file mode 100644
index 0000000000..454b800c13
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deleted file mode 100644
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index 0000000000..03fe38e66c
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new file mode 100644
index 0000000000..a5737ede86
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@@ -0,0 +1,33 @@
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deleted file mode 100644
index 11d3e57d02..0000000000
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new file mode 100644
index 0000000000..ec6a2c3c7b
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