CDVD: Add support for CHD format

.gitmodules

@@ -10,3 +10,6 @@
 [submodule "3rdparty/yaml-cpp/yaml-cpp"]
 	path = 3rdparty/yaml-cpp/yaml-cpp
 	url = https://github.com/jbeder/yaml-cpp.git
+[submodule "3rdparty/libchdr/libchdr"]
+	path = 3rdparty/libchdr/libchdr
+	url = http://github.com/rtissera/libchdr.git

3rdparty/libchdr/libchdr

@@ -0,0 +1 @@
+Subproject commit 97706b2bf84b78bbf68b231d6870cc05e9e1fe7e

3rdparty/libchdr/libchdr.vcxproj

@@ -0,0 +1,99 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Devel|Win32">
+      <Configuration>Devel</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Devel|x64">
+      <Configuration>Devel</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <Import Project="$(SolutionDir)common\vsprops\WinSDK.props" />
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{A0D2B3AD-1F72-4EE3-8B5C-F2C358DA35F0}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Label="Configuration">
+    <ConfigurationType>StaticLibrary</ConfigurationType>
+    <PlatformToolset>$(DefaultPlatformToolset)</PlatformToolset>
+    <CharacterSet>MultiByte</CharacterSet>
+    <WholeProgramOptimization Condition="$(Configuration.Contains(Release))">true</WholeProgramOptimization>
+    <UseDebugLibraries Condition="$(Configuration.Contains(Debug))">true</UseDebugLibraries>
+    <UseDebugLibraries Condition="!$(Configuration.Contains(Debug))">false</UseDebugLibraries>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings" />
+  <ImportGroup Label="PropertySheets">
+    <Import Project="..\DefaultProjectRootDir.props" />
+    <Import Project="..\3rdparty.props" />
+    <Import Condition="$(Configuration.Contains(Debug))" Project="..\..\common\vsprops\CodeGen_Debug.props" />
+    <Import Condition="$(Configuration.Contains(Devel))" Project="..\..\common\vsprops\CodeGen_Devel.props" />
+    <Import Condition="$(Configuration.Contains(Release))" Project="..\..\common\vsprops\CodeGen_Release.props" />
+    <Import Condition="!$(Configuration.Contains(Release))" Project="..\..\common\vsprops\IncrementalLinking.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup>
+    <CodeAnalysisRuleSet>AllRules.ruleset</CodeAnalysisRuleSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <PublicIncludeDirectories>
+    </PublicIncludeDirectories>
+  </PropertyGroup>
+  <ItemDefinitionGroup>
+    <ClCompile>
+      <PreprocessorDefinitions>%(PreprocessorDefinitions);_7ZIP_ST</PreprocessorDefinitions>
+      <WarningLevel>TurnOffAllWarnings</WarningLevel>
+      <AdditionalIncludeDirectories>$(ProjectDir)/libchdr/include/;$(ProjectDir)/libchdr/src/;$(ProjectDir)/libchdr/deps/lzma-19.00/include;$(ProjectDir)/libchdr/deps/zlib-1.2.11;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
+      <LanguageStandard>stdcpp17</LanguageStandard>
+      <Optimization Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">MaxSpeed</Optimization>
+      <FavorSizeOrSpeed Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Speed</FavorSizeOrSpeed>
+      <OmitFramePointers Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</OmitFramePointers>
+      <WholeProgramOptimization Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</WholeProgramOptimization>
+      <BasicRuntimeChecks Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Default</BasicRuntimeChecks>
+      <MinimalRebuild Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">false</MinimalRebuild>
+      <MinimalRebuild Condition="'$(Configuration)|$(Platform)'=='Devel|Win32'">false</MinimalRebuild>
+      <MinimalRebuild Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">false</MinimalRebuild>
+      <MinimalRebuild Condition="'$(Configuration)|$(Platform)'=='Devel|x64'">false</MinimalRebuild>
+    </ClCompile>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\Alloc.c" />
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\Bra86.c" />
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\BraIA64.c" />
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\CpuArch.c" />
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\Delta.c" />
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\LzFind.c" />
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\Lzma86Dec.c" />
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\LzmaDec.c" />
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\LzmaEnc.c" />
+    <ClCompile Include="libchdr\deps\lzma-19.00\src\Sort.c" />
+    <ClCompile Include="libchdr\src\libchdr_bitstream.c">
+      <DeploymentContent>false</DeploymentContent>
+    </ClCompile>
+    <ClCompile Include="libchdr\src\libchdr_cdrom.c" />
+    <ClCompile Include="libchdr\src\libchdr_chd.c" />
+    <ClCompile Include="libchdr\src\libchdr_flac.c" />
+    <ClCompile Include="libchdr\src\libchdr_huffman.c" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets" />
+</Project>

PCSX2_suite.sln

@@ -67,6 +67,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libsamplerate", "3rdparty\l
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "yaml", "3rdparty\yaml-cpp\yaml.vcxproj", "{48329442-E41B-4A1F-8364-36EEE1B71343}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libchdr", "3rdparty\libchdr\libchdr.vcxproj", "{A0D2B3AD-1F72-4EE3-8B5C-F2C358DA35F0}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Win32 = Debug|Win32
@@ -527,6 +529,7 @@ Global
 		{449AD25E-424A-4714-BABC-68706CDCC33B} = {78EBE642-7A4D-4EA7-86BE-5639C6646C38}
 		{47AFDBEF-F15F-4BC0-B436-5BE443C3F80F} = {78EBE642-7A4D-4EA7-86BE-5639C6646C38}
 		{48329442-E41B-4A1F-8364-36EEE1B71343} = {78EBE642-7A4D-4EA7-86BE-5639C6646C38}
+		{A0D2B3AD-1F72-4EE3-8B5C-F2C358DA35F0} = {78EBE642-7A4D-4EA7-86BE-5639C6646C38}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {0BC474EA-3628-45D3-9DBC-E22D0B7E0F77}

cmake/SearchForStuff.cmake

@@ -288,3 +288,6 @@ if(NOT USE_SYSTEM_YAML)
         message(FATAL_ERROR "No bundled yaml-cpp was found")
     endif()
 endif()
+
+add_subdirectory(3rdparty/libchdr/libchdr EXCLUDE_FROM_ALL)
+include_directories(3rdparty/libchdr/libchdr/include)

common/src/Utilities/CMakeLists.txt

@@ -111,7 +111,7 @@ set(UtilitiesFinalSources
 set(UtilitiesFinalLibs
     ${LIBC_LIBRARIES} # Gold (new linux linker) does not get automatically dependency of dependency
 	${wxWidgets_LIBRARIES}
-	yaml-cpp
+	yaml-cpp chdr-static
 )
 
 add_pcsx2_lib(${Output} "${UtilitiesFinalSources}" "${UtilitiesFinalLibs}" "${UtilitiesFinalFlags}")

pcsx2/CDVD/ChdFileReader.cpp

@@ -0,0 +1,173 @@
+#include "PrecompiledHeader.h"
+#include "ChdFileReader.h"
+
+#include "CDVD/CompressedFileReaderUtils.h"
+
+#include <wx/dir.h>
+
+
+bool ChdFileReader::CanHandle(const wxString &fileName)
+{
+    if (!wxFileName::FileExists(fileName) || !fileName.Lower().EndsWith(L".chd")) {
+        return false;
+    }
+    return true;
+}
+
+bool ChdFileReader::Open(const wxString &fileName)
+{
+	  m_filename = fileName;
+
+    chd_file *child = NULL;
+    chd_file *parent = NULL;
+    chd_header *header = new chd_header;
+    chd_header *parent_header = new chd_header;
+
+    wxString chds[8];
+    chds[0] = fileName;
+    int chd_depth = 0;
+    chd_error error;
+
+    do {
+      // Console.Error(L"chd_open checking: %s", static_cast<const char*>(chds[chd_depth]));
+      error = chd_open(static_cast<const char*>(chds[chd_depth]), CHD_OPEN_READ, NULL, &child);
+      if (error == CHDERR_REQUIRES_PARENT) {
+        if (chd_read_header(static_cast<const char*>(chds[chd_depth]), header) != CHDERR_NONE) {
+          Console.Error(L"chd_open chd_read_header error: %s: %s", chd_error_string(error), static_cast<const char*>(chds[chd_depth]));
+          delete header;
+          delete parent_header;
+          return false;
+        }
+        bool found_parent = false;
+        wxFileName wxfilename(chds[chd_depth]);
+        wxString dir_path = wxfilename.GetPath();
+        wxDir dir(dir_path);
+        if (dir.IsOpened()) {
+          wxString parent_fileName;
+          bool cont = dir.GetFirst(&parent_fileName, wxString("*.", wxfilename.GetExt()), wxDIR_FILES | wxDIR_HIDDEN);
+          while ( cont ) {
+            parent_fileName = wxFileName(dir_path, parent_fileName).GetFullPath();
+            if (chd_read_header(static_cast<const char*>(parent_fileName), parent_header) == CHDERR_NONE &&
+                memcmp(parent_header->sha1, header->parentsha1, sizeof(parent_header->sha1)) == 0) {
+              found_parent = true;
+              chds[++chd_depth] = wxString(parent_fileName);
+              break;
+            }
+            cont = dir.GetNext(&parent_fileName);
+          }
+        }
+        if (!found_parent) {
+		      Console.Error(L"chd_open no parent for: %s", static_cast<const char*>(chds[chd_depth]));
+          break;
+        }
+      }
+    } while(error == CHDERR_REQUIRES_PARENT);
+    delete parent_header;
+
+    if (error != CHDERR_NONE) {
+		    Console.Error(L"chd_open return error: %s", chd_error_string(error));
+        delete header;
+        return false;
+    }
+
+		// Console.Error(L"chd_opened parent: %d %s", chd_depth, static_cast<const char*>(chds[chd_depth]));
+    for (int d = chd_depth-1; d >= 0; d--) {
+      // parent = child;
+      // child = (chd_file**)malloc(sizeof(chd_file*));
+      parent = child;
+      child = NULL;
+		  // Console.Error(L"chd_open opening chd: %d %s", d, static_cast<const char*>(chds[d]));
+      error = chd_open(static_cast<const char*>(chds[d]), CHD_OPEN_READ, parent, &child);
+      if (error != CHDERR_NONE) {
+		    Console.Error(L"chd_open return error: %s", chd_error_string(error));
+        delete header;
+        return false;
+      }
+    }
+    ChdFile = child;
+    if (chd_read_header(static_cast<const char*>(chds[0]), header) != CHDERR_NONE) {
+      Console.Error(L"chd_open chd_read_header error: %s: %s", chd_error_string(error), static_cast<const char*>(chds[0]));
+      delete header;
+      return false;
+    }
+
+    // const chd_header *header = chd_get_header(ChdFile);
+    sector_size = header->unitbytes;
+    sector_count = header->unitcount;
+    sectors_per_hunk = header->hunkbytes / sector_size;
+    hunk_buffer = new u8[header->hunkbytes];
+    current_hunk = -1;
+
+    delete header;
+    return true;
+}
+
+int ChdFileReader::ReadSync(void *pBuffer, uint sector, uint count)
+{
+    u8 *dst = (u8 *) pBuffer;
+    u32 hunk = sector / sectors_per_hunk;
+    u32 sector_in_hunk = sector % sectors_per_hunk;
+    chd_error error;
+
+    for (uint i = 0; i < count; i++) {
+      if (current_hunk != hunk) {
+        error = chd_read(ChdFile, hunk, hunk_buffer);
+        if (error != CHDERR_NONE) {
+            Console.Error(L"chd_read return error: %s", chd_error_string(error));
+            // return i * m_blocksize;
+        }
+        current_hunk = hunk;
+      }
+      memcpy(dst + i * m_blocksize, hunk_buffer + sector_in_hunk * sector_size, m_blocksize);
+      sector_in_hunk++;
+      if (sector_in_hunk >= sectors_per_hunk) {
+        hunk++;
+        sector_in_hunk = 0;
+      }
+    }
+    return m_blocksize * count;
+}
+
+void ChdFileReader::BeginRead(void *pBuffer, uint sector, uint count)
+{
+  // TODO: Check if libchdr can read asynchronously
+  async_read = ReadSync(pBuffer, sector, count);
+}
+
+int ChdFileReader::FinishRead()
+{
+	return async_read;
+}
+
+void ChdFileReader::Close()
+{
+    if (hunk_buffer != NULL) {
+      //free(hunk_buffer);
+      delete[] hunk_buffer;
+      hunk_buffer = NULL;
+    }
+    if (ChdFile != NULL) {
+      chd_close(ChdFile);
+      ChdFile = NULL;
+    }
+}
+
+uint ChdFileReader::GetBlockSize() const
+{
+    return m_blocksize;
+}
+
+void ChdFileReader::SetBlockSize(uint blocksize)
+{
+    m_blocksize = blocksize;
+}
+
+u32 ChdFileReader::GetBlockCount() const
+{
+    return sector_count;
+}
+ChdFileReader::ChdFileReader(void)
+{
+  ChdFile = NULL;
+  hunk_buffer = NULL;
+};

pcsx2/CDVD/ChdFileReader.h

@@ -0,0 +1,34 @@
+#pragma once
+#include "AsyncFileReader.h"
+#include "libchdr/chd.h"
+
+class ChdFileReader : public AsyncFileReader
+{
+    DeclareNoncopyableObject(ChdFileReader);
+public:
+    virtual ~ChdFileReader(void) { Close(); };
+
+    static bool CanHandle(const wxString &fileName);
+    bool Open(const wxString &fileName) override;
+
+    int ReadSync(void *pBuffer, uint sector, uint count) override;
+
+    void BeginRead(void *pBuffer, uint sector, uint count) override;
+    int FinishRead(void) override;
+    void CancelRead(void) override {};
+
+    void Close(void) override;
+    void SetBlockSize(uint blocksize);
+    uint GetBlockSize() const;
+    uint GetBlockCount(void) const override;
+    ChdFileReader(void);
+
+private:
+    chd_file *ChdFile;
+    u8 *hunk_buffer;
+    u32 sector_size;
+    u32 sector_count;
+    u32 sectors_per_hunk;
+    u32 current_hunk;
+    u32 async_read;
+};

pcsx2/CDVD/CompressedFileReader.cpp

@@ -16,12 +16,16 @@
 #include "PrecompiledHeader.h"
 #include "AsyncFileReader.h"
 #include "CompressedFileReader.h"
+#include "ChdFileReader.h"
 #include "CsoFileReader.h"
 #include "GzippedFileReader.h"
 
 // CompressedFileReader factory.
 AsyncFileReader* CompressedFileReader::GetNewReader(const wxString& fileName)
 {
+	if (ChdFileReader::CanHandle(fileName)) {
+		return new ChdFileReader();
+	}
 	if (GzippedFileReader::CanHandle(fileName))
 	{
 		return new GzippedFileReader();

pcsx2/CMakeLists.txt

@@ -208,6 +208,7 @@ set(pcsx2CDVDSources
 	CDVD/OutputIsoFile.cpp
 	CDVD/ChunksCache.cpp
 	CDVD/CompressedFileReader.cpp
+	CDVD/ChdFileReader.cpp
 	CDVD/CsoFileReader.cpp
 	CDVD/GzippedFileReader.cpp
 	CDVD/IsoFS/IsoFile.cpp
@@ -226,6 +227,7 @@ set(pcsx2CDVDHeaders
 	CDVD/ChunksCache.h
 	CDVD/CompressedFileReader.h
 	CDVD/CompressedFileReaderUtils.h
+	CDVD/ChdFileReader.h
 	CDVD/CsoFileReader.h
 	CDVD/GzippedFileReader.h
 	CDVD/IsoFileFormats.h

pcsx2/gui/MainMenuClicks.cpp

@@ -374,8 +374,8 @@ bool MainEmuFrame::_DoSelectIsoBrowser(wxString& result)
 
 	wxArrayString isoFilterTypes;
 
-	isoFilterTypes.Add(pxsFmt(_("All Supported (%s)"), WX_STR((isoSupportedLabel + L" .dump" + L" .gz" + L" .cso"))));
-	isoFilterTypes.Add(isoSupportedList + L";*.dump" + L";*.gz" + L";*.cso");
+	isoFilterTypes.Add(pxsFmt(_("All Supported (%s)"), WX_STR((isoSupportedLabel + L" .dump" + L" .gz" + L" .cso" + L" .chd"))));
+	isoFilterTypes.Add(isoSupportedList + L";*.dump" + L";*.gz" + L";*.cso" + L";*.chd");
 
 	isoFilterTypes.Add(pxsFmt(_("Disc Images (%s)"), WX_STR(isoSupportedLabel)));
 	isoFilterTypes.Add(isoSupportedList);
@@ -383,8 +383,8 @@ bool MainEmuFrame::_DoSelectIsoBrowser(wxString& result)
 	isoFilterTypes.Add(pxsFmt(_("Blockdumps (%s)"), L".dump"));
 	isoFilterTypes.Add(L"*.dump");
 
-	isoFilterTypes.Add(pxsFmt(_("Compressed (%s)"), L".gz .cso"));
-	isoFilterTypes.Add(L"*.gz;*.cso");
+	isoFilterTypes.Add(pxsFmt(_("Compressed (%s)"), L".gz .cso .chd"));
+	isoFilterTypes.Add(L"*.gz;*.cso;*.chd");
 
 	isoFilterTypes.Add(_("All Files (*.*)"));
 	isoFilterTypes.Add(L"*.*");

pcsx2/windows/VCprojects/pcsx2.vcxproj

@@ -248,6 +248,7 @@
     <ClCompile Include="..\..\CDVD\BlockdumpFileReader.cpp" />
     <ClCompile Include="..\..\CDVD\CDVDdiscReader.cpp" />
     <ClCompile Include="..\..\CDVD\CDVDdiscThread.cpp" />
+    <ClCompile Include="..\..\CDVD\ChdFileReader.cpp" />
     <ClCompile Include="..\..\CDVD\ChunksCache.cpp" />
     <ClCompile Include="..\..\CDVD\CompressedFileReader.cpp" />
     <ClCompile Include="..\..\CDVD\CsoFileReader.cpp" />
@@ -949,6 +950,9 @@
     <ProjectReference Include="..\..\..\3rdparty\yaml-cpp\yaml.vcxproj">
       <Project>{48329442-e41b-4a1f-8364-36eee1b71343}</Project>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\3rdparty\libchdr\libchdr.vcxproj">
+      <Project>{a0d2b3ad-1f72-4ee3-8b5c-f2c358da35f0}</Project>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\3rdparty\zlib\zlib.vcxproj">
       <Project>{2f6c0388-20cb-4242-9f6c-a6ebb6a83f47}</Project>
       <ReferenceOutputAssembly>false</ReferenceOutputAssembly>

pcsx2/windows/VCprojects/pcsx2.vcxproj.filters

@@ -1312,6 +1312,9 @@
     <ClCompile Include="..\..\gui\Dialogs\GSDumpDialog.cpp">
       <Filter>AppHost\Dialogs</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\CDVD\ChdFileReader.cpp">
+      <Filter>System\ISO</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\Patch.h">