public override void VisitInstanceFunctionCallSyntax(InstanceFunctionCallSyntax syntax)
{
FunctionFlags currentFlags = allowedFlags;
this.Visit(syntax.BaseExpression);
this.Visit(syntax.Dot);
this.Visit(syntax.Name);
this.Visit(syntax.OpenParen);
allowedFlags = allowedFlags.HasDecoratorFlag() ? FunctionFlags.Default : allowedFlags;
this.VisitNodes(syntax.Arguments);
this.Visit(syntax.CloseParen);
allowedFlags = currentFlags;
if (!syntax.Name.IsValid)
{
// the parser produced an instance function calls with an invalid name
// all instance function calls must be bound to a symbol, so let's
// bind to a symbol without any errors (there's already a parse error)
this.bindings.Add(syntax, new ErrorSymbol());
return;
}
if (bindings.TryGetValue(syntax.BaseExpression, out var baseSymbol) && baseSymbol is NamespaceSymbol namespaceSymbol)
{
var functionSymbol = allowedFlags.HasDecoratorFlag()
// Decorator functions are only valid when HasDecoratorFlag() is true which means
// the instance function call is the top level expression of a DecoratorSyntax node.
? namespaceSymbol.Type.MethodResolver.TryGetSymbol(syntax.Name) ?? namespaceSymbol.Type.DecoratorResolver.TryGetSymbol(syntax.Name)
: namespaceSymbol.Type.MethodResolver.TryGetSymbol(syntax.Name);
var foundSymbol = SymbolValidator.ResolveNamespaceQualifiedFunction(allowedFlags, functionSymbol, syntax.Name, namespaceSymbol);
this.bindings.Add(syntax, foundSymbol);
}
}
/// <summary>
/// Decompress a JPEG image to an RGB or grayscale image.
/// </summary>
/// <returns>A byte buffer containing the decompressed image.</returns>
/// <param name="jpegBuf">A buffer containing the JPEG image to decompress.</param>
/// <param name="pixelFormat">Desired pixel format of the destination image.</param>
/// <param name="bottomUp">If true, then the uncompressed result should be stored in bottom-up (Windows, OpenGL) order, not top-down (X11) order.</param>
public byte[] Decompress(byte[] jpegBuf, PixelFormat pixelFormat = PixelFormat.RGB, bool bottomUp = false)
{
if (jpegBuf == null)
{
throw new ArgumentNullException(nameof(jpegBuf));
}
ChrominanceSubsampling subsamp;
Colorspace colorspace;
int width, height;
DecompressHeader(jpegBuf, out width, out height, out subsamp, out colorspace);
int pitch = pixelFormat.GetPixelSize() * width;
byte[] dstBuf = new byte[pitch * height];
FunctionFlags flags = FunctionFlags.NoRealloc;
if (bottomUp)
{
flags |= FunctionFlags.BottomUp;
}
Library.tjDecompress2(_handle, jpegBuf, dstBuf, width, pitch, height, pixelFormat, flags);
return(dstBuf);
}
/// <summary>
/// Decompress a JPEG image to a YUV planar image. This function performs JPEG
/// decompression but leaves out the color conversion step, so a planar YUV
/// image is generated instead of an RGB image.
/// </summary>
/// <returns>A byte buffer containing the decompressed image in planar YUV format.</returns>
/// <param name="jpegBuf">A buffer containing the JPEG image to decompress.</param>
/// <param name="pad">
/// The width of each line in each plane of the YUV image will be padded to the nearest multiple of this number
/// of bytes (must be a power of 2.) To generate images suitable for X Video, this should be set to 4.
/// </param>
/// <param name="bottomUp">If true, then the uncompressed result should be stored in bottom-up (Windows, OpenGL) order, not top-down (X11) order.</param>
/// <remarks>
/// Note that, if the width or height of the image is not an even multiple of
/// the MCU block size (see <see cref="ChrominanceSubsamplingExtensions.GetMCUWidth"/>
/// and <see cref="ChrominanceSubsamplingExtensions.GetMCUHeight"/>), then an
/// intermediate buffer copy will be performed within TurboJPEG.
/// </remarks>
public byte[] DecompressToYUV(byte[] jpegBuf, int pad = 4, bool bottomUp = false)
{
if (jpegBuf == null)
{
throw new ArgumentNullException(nameof(jpegBuf));
}
ChrominanceSubsampling subsamp;
Colorspace colorspace;
int width, height;
DecompressHeader(jpegBuf, out width, out height, out subsamp, out colorspace);
FunctionFlags flags = FunctionFlags.NoRealloc;
if (bottomUp)
{
flags |= FunctionFlags.BottomUp;
}
uint outputSize = Library.tjBufSizeYUV2(width, pad, height, subsamp);
byte[] output = new byte[outputSize];
Library.tjDecompressToYUV2(_handle, jpegBuf, output, width, pad, height, flags);
return(output);
}
public FunctionData(
string name,
string group,
string description,
IClientData clientData,
string typeName,
int arguments,
TypeList types,
FunctionFlags flags,
IPlugin plugin,
long token
)
{
this.kind = IdentifierKind.FunctionData;
this.id = AttributeOps.GetObjectId(this);
this.name = name;
this.group = group;
this.description = description;
this.clientData = clientData;
this.typeName = typeName;
this.arguments = arguments;
this.types = types;
this.flags = flags;
this.plugin = plugin;
this.token = token;
}
public static Symbol ResolveNamespaceQualifiedFunction(FunctionFlags allowedFlags, Symbol?foundSymbol, IdentifierSyntax identifierSyntax, NamespaceSymbol namespaceSymbol)
=> ResolveSymbolInternal(
allowedFlags,
foundSymbol,
identifierSyntax,
getNameSuggestions: () => namespaceSymbol.Type.MethodResolver.GetKnownFunctions().Keys,
getMissingNameError: (builder, suggestedName) => suggestedName switch {
null => builder.FunctionDoesNotExistInNamespace(namespaceSymbol, identifierSyntax.IdentifierName),
public FunctionBindingInfo(string name, int paramCount, NodeEvaluate evaluate, AstNode targetNode, FunctionFlags flags)
{
Name = name;
Evaluate = evaluate;
ParamCount = paramCount;
LocalCount = ParamCount; //by default
TargetNode = targetNode;
Flags = flags;
}
public override void VisitMissingDeclarationSyntax(MissingDeclarationSyntax syntax)
{
allowedFlags = FunctionFlags.ParameterDecorator |
FunctionFlags.VariableDecorator |
FunctionFlags.ResourceDecorator |
FunctionFlags.ModuleDecorator |
FunctionFlags.OutputDecorator;
base.VisitMissingDeclarationSyntax(syntax);
allowedFlags = FunctionFlags.Default;
}
public static void Serialize(this SerializingContainer2 sc, ref FunctionFlags flags)
{
if (sc.IsLoading)
{
flags = (FunctionFlags)sc.ms.ReadUInt32();
}
else
{
sc.ms.Writer.WriteUInt32((uint)flags);
}
}
public override void VisitImportDeclarationSyntax(ImportDeclarationSyntax syntax)
{
allowedFlags = FunctionFlags.ImportDecorator;
this.VisitNodes(syntax.LeadingNodes);
this.Visit(syntax.Keyword);
this.Visit(syntax.ProviderName);
this.Visit(syntax.AsKeyword);
this.Visit(syntax.AliasName);
this.Visit(syntax.Config);
allowedFlags = FunctionFlags.Default;
}
public override void VisitParameterDeclarationSyntax(ParameterDeclarationSyntax syntax)
{
allowedFlags = FunctionFlags.ParameterDecorator;
this.VisitNodes(syntax.LeadingNodes);
this.Visit(syntax.Keyword);
this.Visit(syntax.Name);
this.Visit(syntax.Type);
allowedFlags = FunctionFlags.ParamDefaultsOnly;
this.Visit(syntax.Modifier);
allowedFlags = FunctionFlags.Default;
}
public override void VisitVariableDeclarationSyntax(VariableDeclarationSyntax syntax)
{
allowedFlags = FunctionFlags.VariableDecorator;
this.VisitNodes(syntax.LeadingNodes);
this.Visit(syntax.Keyword);
this.Visit(syntax.Name);
this.Visit(syntax.Assignment);
allowedFlags = FunctionFlags.RequiresInlining;
this.Visit(syntax.Value);
allowedFlags = FunctionFlags.Default;
}
public override void VisitModuleDeclarationSyntax(ModuleDeclarationSyntax syntax)
{
this.Visit(syntax.Keyword);
this.Visit(syntax.Name);
this.Visit(syntax.Path);
this.Visit(syntax.Assignment);
allowedFlags = FunctionFlags.Default;
this.Visit(syntax.IfCondition);
allowedFlags = FunctionFlags.RequiresInlining;
this.Visit(syntax.Body);
allowedFlags = FunctionFlags.Default;
}
public DecoratorBuilder WithFlags(FunctionFlags flags)
{
if (!Enum.IsDefined(typeof(FunctionFlags), flags))
{
// VisitMissingDeclarationSyntax in the TypeAssignmentVisitor uses the flags to determine the error message in cases of dangling decorators
throw new ArgumentException($"The specified flags value is not explicitly defined in the {nameof(FunctionFlags)} enumeration. Define the combination and update usages to ensure the combination is handled correctly.");
}
this.functionOverloadBuilder.WithFlags(flags);
return(this);
}
///////////////////////////////////////////////////////////////////////
public ReturnCode ToList(
FunctionFlags hasFlags,
FunctionFlags notHasFlags,
bool hasAll,
bool notHasAll,
string pattern,
bool noCase,
ref StringList list,
ref Result error
)
{
StringList inputList;
//
// NOTE: If no flags were supplied, we do not bother filtering on
// them.
//
if ((hasFlags == FunctionFlags.None) &&
(notHasFlags == FunctionFlags.None))
{
inputList = new StringList(this.Keys);
}
else
{
inputList = new StringList();
foreach (KeyValuePair <string, _Wrappers.Function> pair in this)
{
if (pair.Value != null)
{
if (((hasFlags == FunctionFlags.None) ||
FlagOps.HasFlags(pair.Value.Flags,
hasFlags, hasAll)) &&
((notHasFlags == FunctionFlags.None) ||
!FlagOps.HasFlags(pair.Value.Flags,
notHasFlags, notHasAll)))
{
inputList.Add(pair.Key);
}
}
}
}
if (list == null)
{
list = new StringList();
}
return(GenericOps <string> .FilterList(
inputList, list, Index.Invalid, Index.Invalid,
ToStringFlags.None, pattern, noCase, ref error));
}
public FunctionWildcardOverload(
string name,
string description,
Regex wildcardRegex,
ReturnTypeBuilderDelegate returnTypeBuilder,
TypeSymbol returnType,
IEnumerable <FixedFunctionParameter> fixedArgumentTypes,
VariableFunctionParameter?variableArgumentType,
FunctionFlags flags = FunctionFlags.Default)
: base(name, description, returnTypeBuilder, returnType, fixedArgumentTypes, variableArgumentType, flags)
{
WildcardRegex = wildcardRegex;
}
public override void VisitIfConditionSyntax(IfConditionSyntax syntax)
{
this.Visit(syntax.Keyword);
allowedFlags = FunctionFlags.Default;
this.Visit(syntax.ConditionExpression);
// if-condition syntax parent is always a resource/module declaration
// this means that we have to allow the functions that are only allowed
// in resource bodies by our runtime (like reference() or listKeys())
// TODO: Update when conditions can be composed together with loops
allowedFlags = FunctionFlags.RequiresInlining;
this.Visit(syntax.Body);
allowedFlags = FunctionFlags.Default;
}
public override void VisitResourceDeclarationSyntax(ResourceDeclarationSyntax syntax)
{
allowedFlags = FunctionFlags.ResoureDecorator;
this.VisitNodes(syntax.LeadingNodes);
this.Visit(syntax.Keyword);
this.Visit(syntax.Name);
this.Visit(syntax.Type);
this.Visit(syntax.Assignment);
allowedFlags = FunctionFlags.Default;
this.Visit(syntax.IfCondition);
allowedFlags = FunctionFlags.RequiresInlining;
this.Visit(syntax.Body);
allowedFlags = FunctionFlags.Default;
}
public static Symbol ResolveNamespaceQualifiedFunction(FunctionFlags allowedFlags, Symbol?foundSymbol, IdentifierSyntax identifierSyntax, NamespaceType namespaceType)
=> ResolveSymbolInternal(
allowedFlags,
foundSymbol,
identifierSyntax,
getNameSuggestions: () =>
{
var knowFunctionNames = namespaceType.MethodResolver.GetKnownFunctions().Keys;
return(allowedFlags.HasAnyDecoratorFlag()
? knowFunctionNames.Concat(namespaceType.DecoratorResolver.GetKnownDecoratorFunctions().Keys)
: knowFunctionNames);
},
getMissingNameError: (builder, suggestedName) => suggestedName switch {
null => builder.FunctionDoesNotExistInNamespace(namespaceType, identifierSyntax.IdentifierName),
///////////////////////////////////////////////////////////////////////
public static bool HasFlags(
FunctionFlags flags,
FunctionFlags hasFlags,
bool all
)
{
if (all)
{
return((flags & hasFlags) == hasFlags);
}
else
{
return((flags & hasFlags) != FunctionFlags.None);
}
}
public FunctionOverload(string name, string description, ReturnTypeBuilderDelegate returnTypeBuilder, TypeSymbol signatureType, IEnumerable <FixedFunctionParameter> fixedParameters, VariableFunctionParameter?variableParameter, EvaluatorDelegate?evaluator, FunctionFlags flags = FunctionFlags.Default)
{
Name = name;
Description = description;
ReturnTypeBuilder = returnTypeBuilder;
Evaluator = evaluator;
FixedParameters = fixedParameters.ToImmutableArray();
VariableParameter = variableParameter;
Flags = flags;
MinimumArgumentCount = FixedParameters.Count(fp => fp.Required) + (VariableParameter?.MinimumCount ?? 0);
MaximumArgumentCount = VariableParameter == null ? FixedParameters.Length : (int?)null;
TypeSignature = $"({string.Join(", ", ParameterTypeSignatures)}): {signatureType}";
TypeSignatureSymbol = signatureType;
}
public override void VisitFunctionCallSyntax(FunctionCallSyntax syntax)
{
FunctionFlags currentFlags = allowedFlags;
this.Visit(syntax.Name);
this.Visit(syntax.OpenParen);
allowedFlags = allowedFlags.HasDecoratorFlag() ? FunctionFlags.Default : allowedFlags;
this.VisitNodes(syntax.Arguments);
this.Visit(syntax.CloseParen);
allowedFlags = currentFlags;
var symbol = this.LookupSymbolByName(syntax.Name, true);
// bind what we got - the type checker will validate if it fits
this.bindings.Add(syntax, symbol);
}
public FunctionWildcardOverload(
string name,
string genericDescription,
string description,
Regex wildcardRegex,
ResultBuilderDelegate resultBuilder,
TypeSymbol returnType,
IEnumerable <FixedFunctionParameter> fixedArgumentTypes,
VariableFunctionParameter?variableArgumentType,
EvaluatorDelegate?evaluator,
VariableGeneratorDelegate?variableGenerator = null,
FunctionFlags flags = FunctionFlags.Default)
: base(name, genericDescription, description, resultBuilder, returnType, fixedArgumentTypes, variableArgumentType, evaluator, variableGenerator, flags)
{
WildcardRegex = wildcardRegex;
}
public override bool Deserialize()
{
var result = base.Deserialize();
NativeToken = Data.ReadUInt16();
//OperatorPrecedence = Data.ReadByte(); // Does not appear in ME3?
FunctionFlags = (FunctionFlags)Data.ReadInt32();
if (FunctionFlags.HasFlag(FunctionFlags.Net))
{
ReplicateOffset = Data.ReadUInt16();
}
return(result);
}
/// <summary>
/// Compress an RGB, grayscale, or CMYK image into a JPEG image.
/// </summary>
/// <returns>A byte array containing the compressed JPEG result.</returns>
/// <param name="srcBuf">An image buffer containing RGB, grayscale, or CMYK pixels to be compressed.</param>
/// <param name="width">Width (in pixels) of the source image.</param>
/// <param name="pitch">
/// Bytes per line of the source image. Normally, this should be
/// <c>width * format.GetPixelSize()</c> if the image is unpadded,
/// or <c><see cref="Library.TJPAD"/>(width * format.GetPixelSize())</c> if each line of
/// the image is padded to the nearest 32-bit boundary, as is the case
/// for Windows bitmaps. You can also be clever and use this parameter
/// to skip lines, etc. Setting this parameter to 0 is the equivalent of
/// setting it to <c>width * format.GetPixelSize()</c>.
/// </param>
/// <param name="height">Height (in pixels) of the source image.</param>
/// <param name="format">Pixel format of the source image.</param>
/// <param name="jpegQual">The image quality of the generated JPEG image (1 = worst, 100 = best).</param>
/// <param name="jpegSubsamp">The level of chrominance subsampling to be used when generating the JPEG image.</param>
/// <param name="bottomUp">If true, then the uncompressed source image is stored in bottom-up (Windows, OpenGL) order, not top-down (X11) order.</param>
public byte[] Compress(byte[] srcBuf, int width, int pitch, int height, PixelFormat format, int jpegQual, ChrominanceSubsampling jpegSubsamp = ChrominanceSubsampling.SAMP_420, bool bottomUp = false)
{
if (srcBuf == null)
{
throw new ArgumentNullException(nameof(srcBuf));
}
IntPtr jpegBuf = IntPtr.Zero;
byte[] output;
FunctionFlags flags = FunctionFlags.NoRealloc;
if (bottomUp)
{
flags |= FunctionFlags.BottomUp;
}
try {
// Although tjBufSize almost always returns a bigger buffer than we need,
// it's better to have extra and only allocate once, instead of incurring
// the cost of realloc and a mid compress buffer copy.
uint jpegSize = Library.tjBufSize(width, height, jpegSubsamp);
if (jpegSize == uint.MaxValue)
{
throw new Exception(Library.tjGetErrorStr());
}
jpegBuf = Library.tjAlloc((int)jpegSize);
if (jpegBuf == IntPtr.Zero)
{
throw new Exception(String.Format("tjAlloc failed to allocate {0} bytes", jpegSize));
}
Library.tjCompress2(_handle, srcBuf, width, pitch, height, format, ref jpegBuf, ref jpegSize, jpegSubsamp, jpegQual, flags);
output = new byte[jpegSize];
Marshal.Copy(jpegBuf, output, 0, output.Length);
} finally {
if (jpegBuf != IntPtr.Zero)
{
Library.tjFree(jpegBuf);
}
}
return(output);
}
public Function(string name, FunctionFlags flags,
VariableType returntype, CodeBody body,
List <FunctionParameter> parameters = null,
SourcePosition start = null, SourcePosition end = null)
: base(ASTNodeType.Function, start, end)
{
Name = name;
Body = body;
ReturnType = returntype;
Flags = flags;
Parameters = parameters ?? new List <FunctionParameter>();
Locals = new List <VariableDeclaration>();
VarType = new DelegateType(this)
{
IsFunction = true,
Declaration = this
};
if (Body != null)
{
Body.Outer = this;
}
}
public override void Serialize(IUnrealSerializer serializer)
{
base.Serialize(serializer);
if (serializer.Mode == UnrealSerializationMode.Loading)
{
uint rawFunctionFlags = 0;
serializer.Serialize(ref rawFunctionFlags);
this._FunctionFlags = (FunctionFlags)rawFunctionFlags;
}
else if (serializer.Mode == UnrealSerializationMode.Saving)
{
var rawFunctionFlags = (uint)this._FunctionFlags;
serializer.Serialize(ref rawFunctionFlags);
}
if ((this._FunctionFlags & FunctionFlags.Net) != 0)
{
serializer.Serialize(ref this._RepOffset);
}
serializer.Serialize(ref this._EventGraphFunction);
serializer.Serialize(ref this._EventGraphCallOffset);
}
public bool HasFunctionFlag(FunctionFlags flag)
{
return(((uint)FunctionFlags & (uint)flag) != 0);
}
public static bool HasAllDecoratorFlags(this FunctionFlags functionFlags) => (functionFlags & DecoratorFlags) == DecoratorFlags;
public bool HasFunctionFlag( FunctionFlags flag )
{
return ((uint)FunctionFlags & (uint)flag) != 0;
}
/// <summary>
/// Losslessly transform a JPEG image into another JPEG image. Lossless
/// transforms work by moving the raw coefficients from one JPEG image structure
/// to another without altering the values of the coefficients. While this is
/// typically faster than decompressing the image, transforming it, and
/// re-compressing it, lossless transforms are not free. Each lossless
/// transform requires reading and performing Huffman decoding on all of the
/// coefficients in the source image, regardless of the size of the destination
/// image. Thus, this function provides a means of generating multiple
/// transformed images from the same source or applying multiple
/// transformations simultaneously, in order to eliminate the need to read the
/// source coefficients multiple times.
/// </summary>
/// <param name="handle">a handle to a TurboJPEG transformer instance.</param>
/// <param name="jpegBuf">pointer to a buffer containing the JPEG image to transform</param>
/// <param name="dstBufs">
/// pointer to an array of <paramref name="n"/> image buffers. <paramref name="dstBufs"/>[i]
/// will receive a JPEG image that has been transformed using the
/// parameters in <paramref name="transforms"/>[i]. TurboJPEG has the ability to
/// reallocate the JPEG buffer to accommodate the size of the JPEG image.
/// Thus, you can choose to:
/// <list type="bullet">
/// <item>
/// <description>
/// pre-allocate the JPEG buffer with an arbitrary size using
/// <see cref="tjAlloc"/> and let TurboJPEG grow the buffer as needed,
/// </description>
/// </item>
/// <item>
/// <description>
/// set <paramref name="dstBufs"/>[i] to NULL to tell TurboJPEG to allocate the
/// buffer for you, or
/// </description>
/// </item>
/// <item>
/// <description>
/// pre-allocate the buffer to a "worst case" size determined by
/// calling <see cref="tjBufSize"/> with the transformed or cropped width and
/// height. This should ensure that the buffer never has to be
/// re-allocated (setting <see cref="FunctionFlags.NoRealloc"/> guarantees this.)
/// </description>
/// </item>
/// </list>
/// If you choose option 1, <paramref name="dstSizes"/>[i] should be set to
/// the size of your pre-allocated buffer. In any case, unless you have set
/// <see cref="FunctionFlags.NoRealloc"/>, you should always check <paramref name="dstBufs"/>[i]
/// upon return from this function, as it may have changed.
/// </param>
/// <param name="dstSizes">
/// pointer to an array of <paramref name="n"/> unsigned long variables that will
/// receive the actual sizes (in bytes) of each transformed JPEG image. If
/// <paramref name="dstBufs"/>[i] points to a pre-allocated buffer, then
/// <paramref name="dstSizes"/>[i] should be set to the size of the buffer. Upon return,
/// <paramref name="dstSizes"/>[i] will contain the size of the JPEG image (in bytes.)
/// </param>
/// <param name="transforms">
/// pointer to an array of <paramref name="n"/> <see cref="Transform"/> structures, each of
/// which specifies the transform parameters and/or cropping region for
/// the corresponding transformed output image.
/// </param>
/// <param name="flags">the bitwise OR of one or more of the <see cref="FunctionFlags"/>.</param>
/// <returns>0 if successful, or -1 if an error occurred (see <see cref="tjGetErrorStr"/>.)</returns>
/// <remarks>
/// Defined in turbojpeg.h as:
///
/// DLLEXPORT int DLLCALL tjTransform(tjhandle handle,
/// const unsigned char* jpegBuf, unsigned long jpegSize, int n,
/// unsigned char** dstBufs, unsigned long* dstSizes, tjtransform *transforms,
/// int flags);
/// </remarks>
internal static void tjTransform(IntPtr handle, byte [] jpegBuf, IntPtr[] dstBufs, uint [] dstSizes, Transform [] transforms, FunctionFlags flags)
{
int retval;
if (IsLP64)
{
ulong [] dstSizes64 = new ulong [dstSizes.Length];
dstSizes.CopyTo (dstSizes64, 0);
retval = tjTransform_64 (handle, jpegBuf, (ulong)jpegBuf.Length, transforms.Length, dstBufs, dstSizes64, transforms, flags);
for (int i = 0; i < dstSizes.Length; ++i)
dstSizes [i] = (uint)dstSizes64 [i];
}
else
retval = tjTransform_32 (handle, jpegBuf, (uint)jpegBuf.Length, transforms.Length, dstBufs, dstSizes, transforms, flags);
if (retval != 0)
throw new TurboJPEGException ();
}
/// <summary>
/// Compress a set of Y, U (Cb), and V (Cr) image planes into a JPEG image.
/// </summary>
/// <param name="handle">a handle to a TurboJPEG compressor or transformer instance</param>
/// <param name="srcPlanes">
/// an array of pointers to Y, U (Cb), and V (Cr) image planes
/// (or just a Y plane, if compressing a grayscale image) that contain a YUV
/// image to be compressed. These planes can be contiguous or non-contiguous in
/// memory. The size of each plane should match the value returned by
/// <see cref="tjPlaneSizeYUV"/> for the given image width, height, strides, and level of
/// chrominance subsampling. Refer to @ref YUVnotes "YUV Image Format Notes"
/// for more details.
/// </param>
/// <param name="width">
/// width (in pixels) of the source image. If the width is not an
/// even multiple of the MCU block width (see <see cref="ChrominanceSubsamplingExtensions.GetMCUWidth"/>), then an intermediate
/// buffer copy will be performed within TurboJPEG.
/// </param>
/// <param name="strides">
/// an array of integers, each specifying the number of bytes per
/// line in the corresponding plane of the YUV source image. Setting the stride
/// for any plane to 0 is the same as setting it to the plane width (see
/// @ref YUVnotes "YUV Image Format Notes".) If <c>strides</c> is NULL, then
/// the strides for all planes will be set to their respective plane widths.
/// You can adjust the strides in order to specify an arbitrary amount of line
/// padding in each plane or to create a JPEG image from a subregion of a larger
/// YUV planar image.
/// </param>
/// <param name="height">
/// height (in pixels) of the source image. If the height is not
/// an even multiple of the MCU block height (see <see cref="ChrominanceSubsamplingExtensions.GetMCUHeight"/>), then an
/// intermediate buffer copy will be performed within TurboJPEG.
/// </param>
/// <param name="subsamp">
/// the level of chrominance subsampling used in the source
/// image (see <see cref="ChrominanceSubsampling"/>.)
/// </param>
/// <param name="jpegBuf">
/// address of a pointer to an image buffer that will receive the
/// JPEG image. TurboJPEG has the ability to reallocate the JPEG buffer to
/// accommodate the size of the JPEG image. Thus, you can choose to:
/// <list type="bullet">
/// <item>
/// <description>
/// pre-allocate the JPEG buffer with an arbitrary size using
/// <see cref="tjAlloc"/> and let TurboJPEG grow the buffer as needed,
/// </description>
/// </item>
/// <item>
/// <description>
/// set <paramref name="jpegBuf"/> to NULL to tell TurboJPEG to allocate the buffer
/// for you, or
/// </description>
/// </item>
/// <item>
/// <description>
/// pre-allocate the buffer to a "worst case" size determined by calling
/// <see cref="tjBufSize"/>. This should ensure that the buffer never has to be
/// re-allocated (setting <see cref="FunctionFlags.NoRealloc"/> guarantees this.)
/// </description>
/// </item>
/// </list>
/// If you choose option 1, <paramref name="jpegSize"/> should be set to the size of your
/// pre-allocated buffer. In any case, unless you have set <see cref="FunctionFlags.NoRealloc"/>,
/// you should always check <c>jpegBuf</c> upon return from this function, as
/// it may have changed.
/// </param>
/// <param name="jpegSize">
/// Pointer to an unsigned long variable that holds the size of
/// the JPEG image buffer. If <paramref name="jpegBuf"/> points to a pre-allocated
/// buffer, then <c>jpegSize</c> should be set to the size of the buffer.
/// Upon return, <c>jpegSize</c> will contain the size of the JPEG image (in
/// bytes.) If <paramref name="jpegBuf"/> points to a JPEG image buffer that is being
/// reused from a previous call to one of the JPEG compression functions, then
/// <c>jpegSize</c> is ignored.
/// </param>
/// <param name="jpegQual">The image quality of the generated JPEG image (1 = worst, 100 = best)</param>
/// <param name="flags">the bitwise OR of one or more of the <see cref="FunctionFlags"/>.</param>
/// <exception cref="TurboJPEGException">Thrown if an error occured.</exception>
/// <remarks>
/// Defined in turbojpeg.h as:
///
/// DLLEXPORT int DLLCALL tjCompressFromYUVPlanes(tjhandle handle,
/// const unsigned char** srcPlanes, int width, const int* strides, int height,
/// int subsamp, unsigned char** jpegBuf, unsigned long* jpegSize, int jpegQual,
/// int flags);
/// </remarks>
internal static void tjCompressFromYUVPlanes(
IntPtr handle,
byte [,] srcPlanes, int width, int [] strides, int height,
ChrominanceSubsampling subsamp, ref IntPtr jpegBuf, ref uint jpegSize, int jpegQual,
FunctionFlags flags)
{
int retval;
if (IsLP64)
{
ulong jpegSize64 = jpegSize;
retval = tjCompressFromYUVPlanes_64(handle, srcPlanes, width, strides, height, subsamp, ref jpegBuf, ref jpegSize64, jpegQual, flags);
jpegSize = (uint)jpegSize64;
}
else
retval = tjCompressFromYUVPlanes_32(handle, srcPlanes, width, strides, height, subsamp, ref jpegBuf, ref jpegSize, jpegQual, flags);
if (retval != 0)
throw new TurboJPEGException ();
}
private static extern int tjDecompressToYUVPlanes_64( IntPtr handle, byte[] jpegBuf, ulong jpegSize, byte[,] dstPlanes, int width, int[] strides, int height, FunctionFlags flags);
private static extern int tjCompressFromYUV_64( IntPtr handle, byte [] srcBuf, int width, int pad, int height, ChrominanceSubsampling subsamp, ref IntPtr jpegBuf, ref ulong jpegSize, int jpegQual, FunctionFlags flags);
internal static extern int tjEncodeYUV3(IntPtr handle, byte[] srcBuf, int width, int pitch, int height, PixelFormat pixelFormat, IntPtr dstBuf, int pad, ChrominanceSubsampling subsamp, FunctionFlags flags);
/// <summary>
/// Decompress a JPEG image into separate Y, U (Cb), and V (Cr) image
/// planes. This function performs JPEG decompression but leaves out the color
/// conversion step, so a planar YUV image is generated instead of an RGB image.
/// </summary>
/// <param name="handle">a handle to a TurboJPEG decompressor or transformer instance.</param>
/// <param name="jpegBuf">pointer to a buffer containing the JPEG image to decompress</param>
/// <param name="dstPlanes">
/// an array of pointers to Y, U (Cb), and V (Cr) image planes
/// (or just a Y plane, if decompressing a grayscale image) that will receive
/// the YUV image.These planes can be contiguous or non-contiguous in memory.
/// Use <see cref="tjPlaneSizeYUV"/> to determine the appropriate size for each plane based
/// on the scaled image width, scaled image height, strides, and level of
/// chrominance subsampling.Refer to @ref YUVnotes "YUV Image Format Notes"
/// for more details.
/// </param>
/// <param name="width">
/// desired width (in pixels) of the YUV image. If this is
/// different than the width of the JPEG image being decompressed, then
/// TurboJPEG will use scaling in the JPEG decompressor to generate the largest
/// possible image that will fit within the desired width. If <c>width</c> is
/// set to 0, then only the height will be considered when determining the
/// scaled image size. If the scaled width is not an even multiple of the MCU
/// block width (see #tjMCUWidth), then an intermediate buffer copy will be
/// performed within TurboJPEG.
/// </param>
/// <param name="strides">
/// an array of integers, each specifying the number of bytes per
/// line in the corresponding plane of the output image. Setting the stride for
/// any plane to 0 is the same as setting it to the scaled plane width (see
/// @ref YUVnotes "YUV Image Format Notes".) If <c>strides</c> is NULL, then
/// the strides for all planes will be set to their respective scaled plane
/// widths. You can adjust the strides in order to add an arbitrary amount of
/// line padding to each plane or to decompress the JPEG image into a subregion
/// of a larger YUV planar image.
/// </param>
/// <param name="height">
/// desired height (in pixels) of the YUV image. If this is
/// different than the height of the JPEG image being decompressed, then
/// TurboJPEG will use scaling in the JPEG decompressor to generate the largest
/// possible image that will fit within the desired height.If<tt>height</tt>
/// is set to 0, then only the width will be considered when determining the
/// scaled image size.If the scaled height is not an even multiple of the MCU
/// block height (see #tjMCUHeight), then an intermediate buffer copy will be
/// performed within TurboJPEG.
/// </param>
/// <param name="flags">the bitwise OR of one or more of the <see cref="FunctionFlags"/>.</param>
/// <exception cref="TurboJPEGException">Thrown if an error occured.</exception>
/// <remarks>
/// Defined in turbojpeg.h as:
///
/// DLLEXPORT int DLLCALL tjDecompressToYUVPlanes (tjhandle handle,
/// const unsigned char* jpegBuf, unsigned long jpegSize,
/// unsigned char** dstPlanes, int width, int* strides, int height, int flags);
/// </remarks>
internal static void tjDecompressToYUVPlanes(
IntPtr handle, byte[] jpegBuf, byte[,] dstPlanes, int width, int [] strides, int height, FunctionFlags flags)
{
int retval;
if (IsLP64)
retval = tjDecompressToYUVPlanes_64 (handle, jpegBuf, (ulong)jpegBuf.Length, dstPlanes, width, strides, height, flags);
else
retval = tjDecompressToYUVPlanes_32 (handle, jpegBuf, (uint)jpegBuf.Length, dstPlanes, width, strides, height, flags);
if (retval != 0)
throw new TurboJPEGException ();
}
public override void VisitOutputDeclarationSyntax(OutputDeclarationSyntax syntax)
{
allowedFlags = FunctionFlags.RequiresInlining;
base.VisitOutputDeclarationSyntax(syntax);
allowedFlags = FunctionFlags.Default;
}
/// <summary>
/// Compress an RGB or grayscale image into a JPEG image.
/// </summary>
/// <param name="handle">a handle to a TurboJPEG compressor or transformer instance.</param>
/// <param name="srcBuf">pointer to an image buffer containing RGB or grayscale pixels to be compressed.</param>
/// <param name="width">width (in pixels) of the source image.</param>
/// <param name="pitch">
/// bytes per line of the source image. Normally, this should be
/// <paramref name="width"/> * <see cref="PixelFormatExtensions.GetPixelSize"/>(<paramref name="pixelFormat"/>) if the image is unpadded, or
/// <see cref="TJPAD"/>(<paramref name="width"/> * <see cref="PixelFormatExtensions.GetPixelSize"/>(<paramref name="pixelFormat"/>)) if each line of the image
/// is padded to the nearest 32-bit boundary, as is the case for Windows
/// bitmaps. You can also be clever and use this parameter to skip lines, etc.
/// Setting this parameter to 0 is the equivalent of setting it to
/// <paramref name="width"/> * <see cref="PixelFormatExtensions.GetPixelSize"/>(<paramref name="pixelFormat"/>).
/// </param>
/// <param name="height">height (in pixels) of the source image.</param>
/// <param name="pixelFormat">pixel format of the source image (see <see cref="PixelFormat"/>.).</param>
/// <param name="jpegBuf">
/// address of a pointer to an image buffer that will receive the
/// JPEG image. TurboJPEG has the ability to reallocate the JPEG buffer to
/// accommodate the size of the JPEG image. Thus, you can choose to:
/// <list type="bullet">
/// <item>
/// <description>
/// pre-allocate the JPEG buffer with an arbitrary size using
/// <see cref="tjAlloc"/> and let TurboJPEG grow the buffer as needed,
/// </description>
/// </item>
/// <item>
/// <description>
/// set <paramref name="jpegBuf"/> to NULL to tell TurboJPEG to allocate the buffer
/// for you, or
/// </description>
/// </item>
/// <item>
/// <description>
/// pre-allocate the buffer to a "worst case" size determined by calling
/// <see cref="tjBufSize"/>. This should ensure that the buffer never has to be
/// re-allocated (setting <see cref="FunctionFlags.NoRealloc"/> guarantees this.)
/// </description>
/// </item>
/// </list>
/// If you choose option 1, <paramref name="jpegSize"/> should be set to the size of your
/// pre-allocated buffer. In any case, unless you have set <see cref="FunctionFlags.NoRealloc"/>,
/// you should always check <c>jpegBuf</c> upon return from this function, as
/// it may have changed.
/// </param>
/// <param name="jpegSize">
/// pointer to an unsigned long variable that holds the size of
/// the JPEG image buffer. If <paramref name="jpegBuf"/> points to a pre-allocated
/// buffer, then <c>jpegSize</c> should be set to the size of the buffer.
/// Upon return, <c>jpegSize</c> will contain the size of the JPEG image (in
/// bytes.) If <paramref name="jpegBuf"/> points to a JPEG image buffer that is being
/// reused from a previous call to one of the JPEG compression functions, then
/// <c>jpegSize</c> is ignored.
/// </param>
/// <param name="jpegSubsamp">
/// the level of chrominance subsampling to be used when
/// generating the JPEG image (see <see cref="ChrominanceSubsampling"/>.)
/// </param>
/// <param name="jpegQual">the image quality of the generated JPEG image (1 = worst, 100 = best)</param>
/// <param name="flags">the bitwise OR of one or more of the <see cref="FunctionFlags"/>.</param>
/// <exception cref="TurboJPEGException">Thrown if an error occurred.</exception>
/// <remarks>
/// Defined in turbojpeg.h as:
///
/// DLLEXPORT int DLLCALL tjCompress2 (tjhandle handle, const unsigned char* srcBuf,
/// int width, int pitch, int height, int pixelFormat, unsigned char** jpegBuf,
/// unsigned long* jpegSize, int jpegSubsamp, int jpegQual, int flags);
/// </remarks>
internal static void tjCompress2(IntPtr handle, byte [] srcBuf,
int width, int pitch, int height, PixelFormat pixelFormat, ref IntPtr jpegBuf,
ref uint jpegSize, ChrominanceSubsampling jpegSubsamp, int jpegQual, FunctionFlags flags)
{
int retval;
if (IsLP64)
{
ulong jpegSize64 = jpegSize;
retval = tjCompress2_64 (handle, srcBuf, width, pitch, height, pixelFormat, ref jpegBuf, ref jpegSize64, jpegSubsamp, jpegQual, flags);
jpegSize = (uint)jpegSize64;
}
else
retval = tjCompress2_32(handle, srcBuf, width, pitch, height, pixelFormat, ref jpegBuf, ref jpegSize, jpegSubsamp, jpegQual, flags);
if (retval != 0)
throw new TurboJPEGException ();
}
public override void VisitParameterDeclarationSyntax(ParameterDeclarationSyntax syntax)
{
allowedFlags = FunctionFlags.ParamDefaultsOnly;
base.VisitParameterDeclarationSyntax(syntax);
allowedFlags = FunctionFlags.Default;
}
private static extern int tjCompress2_64(IntPtr handle, byte [] srcBuf, int width, int pitch, int height, PixelFormat pixelFormat, ref IntPtr jpegBuf, ref ulong jpegSize, ChrominanceSubsampling jpegSubsamp, int jpegQual, FunctionFlags flags);
private static extern int tjDecompressToYUV2_64(IntPtr handle, byte [] jpegBuf, ulong jpegSize, byte [] dstBuf, int width, int pad, int height, FunctionFlags flags);
internal static extern int tjDecodeYUVPlanes( IntPtr handle, byte[,] srcPlanes, int[] strides, ChrominanceSubsampling subsamp, byte[] dstBuf, int width, int pitch, int height, PixelFormat pixelFormat, FunctionFlags flags);
private static extern int tjCompressFromYUVPlanes_32( IntPtr handle, byte [,] srcPlanes, int width, int [] strides, int height, ChrominanceSubsampling subsamp, ref IntPtr jpegBuf, ref uint jpegSize, int jpegQual, FunctionFlags flags);
private static extern int tjTransform_64(IntPtr handle, byte [] jpegBuf, ulong jpegSize, int n, IntPtr[] dstBufs, ulong [] dstSizes, Transform [] transforms, FunctionFlags flags);
/// <summary>
/// Decompress a JPEG image to a YUV planar image. This function performs JPEG
/// decompression but leaves out the color conversion step, so a planar YUV
/// image is generated instead of an RGB image.
/// </summary>
/// <param name="handle">a handle to a TurboJPEG decompressor or transformer instance.</param>
/// <param name="jpegBuf">pointer to a buffer containing the JPEG image to decompress.</param>
/// <param name="dstBuf">
/// pointer to an image buffer that will receive the YUV image.
/// Use <see cref="tjBufSizeYUV2"/> to determine the appropriate size for this buffer based
/// on the image width, height, padding, and level of subsampling. The Y,
/// U (Cb), and V (Cr) image planes will be stored sequentially in the buffer
/// (refer to @ref YUVnotes "YUV Image Format Notes".)
/// </param>
/// <param name="width">
/// width desired width (in pixels) of the YUV image. If this is
/// different than the width of the JPEG image being decompressed, then
/// TurboJPEG will use scaling in the JPEG decompressor to generate the largest
/// possible image that will fit within the desired width. If <c>width</c> is
/// set to 0, then only the height will be considered when determining the
/// scaled image size. If the scaled width is not an even multiple of the MCU
/// block width (see #tjMCUWidth), then an intermediate buffer copy will be
/// performed within TurboJPEG.
/// </param>
/// <param name="pad">
/// the width of each line in each plane of the YUV image will be
/// padded to the nearest multiple of this number of bytes (must be a power of
/// 2.) To generate images suitable for X Video, <tt>pad</tt> should be set to
/// 4.
/// </param>
/// <param name="height">
/// desired height (in pixels) of the YUV image. If this is
/// different than the height of the JPEG image being decompressed, then
/// TurboJPEG will use scaling in the JPEG decompressor to generate the largest
/// possible image that will fit within the desired height.If<tt>height</tt>
/// is set to 0, then only the width will be considered when determining the
/// scaled image size.If the scaled height is not an even multiple of the MCU
/// block height (see #tjMCUHeight), then an intermediate buffer copy will be
/// performed within TurboJPEG.
/// </param>
/// <param name="flags">the bitwise OR of one or more of the <see cref="FunctionFlags"/>.</param>
/// <exception cref="TurboJPEGException">Thrown if an error occured.</exception>
/// <remarks>
/// Defined in turbojpeg.h as:
///
/// DLLEXPORT int DLLCALL tjDecompressToYUV2(tjhandle handle,
/// const unsigned char* jpegBuf, unsigned long jpegSize, unsigned char* dstBuf,
/// int width, int pad, int height, int flags);
/// </remarks>
internal static void tjDecompressToYUV2(IntPtr handle,
byte [] jpegBuf, byte [] dstBuf,
int width, int pad, int height,
FunctionFlags flags)
{
int retval;
if (IsLP64)
retval = tjDecompressToYUV2_64 (handle, jpegBuf, (ulong)jpegBuf.Length, dstBuf, width, pad, height, flags);
else
retval = tjDecompressToYUV2_32 (handle, jpegBuf, (uint)jpegBuf.Length, dstBuf, width, pad, height, flags);
if (retval != 0)
throw new TurboJPEGException ();
}
private static extern int tjDecompress2_64(IntPtr handle, byte [] jpegBuf, ulong jpegSize, byte [] dstBuf, int width, int pitch, int height, PixelFormat pixelFormat, FunctionFlags flags);