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Cosmetical changes and quite a few bug fixes along the way - B_RGB24 is definitely not supposed to be 32 bits per pixel. For example. Added another constructor to take on bitmap data from somewhere else

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@12384 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Stephan Aßmus 2005-04-14 00:06:01 +00:00
parent 9afc50fd98
commit ec668ad701
2 changed files with 137 additions and 137 deletions
headers/private/servers/app
ServerBitmap.h
src/servers/app
ServerBitmap.cpp

6
headers/private/servers/app/ServerBitmap.h

@ -143,6 +143,12 @@ class UtilityBitmap : public ServerBitmap {
screen_id screen = B_MAIN_SCREEN_ID);
UtilityBitmap(const ServerBitmap* bmp);
UtilityBitmap(const uint8* alreadyPaddedData,
uint32 width,
uint32 height,
color_space format);
virtual ~UtilityBitmap();
};

268
src/servers/app/ServerBitmap.cpp

@ -36,54 +36,56 @@
greater than the default will result in the number of bytes specified.
\param screen Screen assigned to the bitmap.
*/
ServerBitmap::ServerBitmap(BRect rect,color_space space, int32 flags,
int32 bytesperline, screen_id screen)
ServerBitmap::ServerBitmap(BRect rect, color_space space,
int32 flags, int32 bytesPerLine,
screen_id screen)
: fInitialized(false),
fArea(B_ERROR),
fBuffer(NULL),
// WARNING: '1' is added to the width and height.
// Same is done in FBBitmap subclass, so if you
// modify here make sure to do the same under
// FBBitmap::SetSize(...)
fWidth(rect.IntegerWidth() + 1),
fHeight(rect.IntegerHeight() + 1),
fBytesPerRow(0),
fSpace(space),
fFlags(flags),
fBitsPerPixel(0)
// TODO: what about fToken and fOffset ?!?
{
fInitialized=false;
// WARNING: '1' is added to the width and height. Same is done in FBBitmap
// subclass, so if you modify here make sure to do the same under FBBitmap::SetSize(...)
fWidth=rect.IntegerWidth()+1;
fHeight=rect.IntegerHeight()+1;
fSpace=space;
fArea=B_ERROR;
fBuffer=NULL;
fFlags=flags;
_HandleSpace(space, bytesperline);
_HandleSpace(space, bytesPerLine);
}
//! Copy constructor does not copy the buffer.
ServerBitmap::ServerBitmap(const ServerBitmap *bmp)
ServerBitmap::ServerBitmap(const ServerBitmap* bmp)
: fInitialized(false),
fArea(B_ERROR),
fBuffer(NULL)
// TODO: what about fToken and fOffset ?!?
{
fInitialized=false;
fArea=B_ERROR;
fBuffer=NULL;
if(bmp)
{
fWidth=bmp->fWidth;
fHeight=bmp->fHeight;
fBytesPerRow=bmp->fBytesPerRow;
fSpace=bmp->fSpace;
fFlags=bmp->fFlags;
fBitsPerPixel=bmp->fBitsPerPixel;
}
else
{
fWidth=0;
fHeight=0;
fBytesPerRow=0;
fSpace=B_NO_COLOR_SPACE;
fFlags=0;
fBitsPerPixel=0;
if (bmp) {
fWidth = bmp->fWidth;
fHeight = bmp->fHeight;
fBytesPerRow = bmp->fBytesPerRow;
fSpace = bmp->fSpace;
fFlags = bmp->fFlags;
fBitsPerPixel = bmp->fBitsPerPixel;
} else {
fWidth = 0;
fHeight = 0;
fBytesPerRow = 0;
fSpace = B_NO_COLOR_SPACE;
fFlags = 0;
fBitsPerPixel = 0;
}
}
/*!
\brief Empty. Defined for subclasses.
*/
ServerBitmap::~ServerBitmap(void)
ServerBitmap::~ServerBitmap()
{
}
@ -91,9 +93,10 @@ ServerBitmap::~ServerBitmap(void)
\brief Gets the number of bytes occupied by the bitmap, including padding bytes.
\return The number of bytes occupied by the bitmap, including padding.
*/
uint32 ServerBitmap::BitsLength(void) const
uint32
ServerBitmap::BitsLength(void) const
{
return (uint32)(fBytesPerRow*fHeight);
return (uint32)(fBytesPerRow * fHeight);
}
/*!
@ -102,11 +105,14 @@ uint32 ServerBitmap::BitsLength(void) const
Subclasses should call this so the buffer can automagically
be allocated on the heap.
*/
void ServerBitmap::_AllocateBuffer(void)
void
ServerBitmap::_AllocateBuffer(void)
{
if(fBuffer!=NULL)
uint32 length = BitsLength();
if (length > 0) {
delete fBuffer;
fBuffer=new uint8[BitsLength()];
fBuffer = new uint8[length];
}
}
/*!
@ -114,29 +120,27 @@ void ServerBitmap::_AllocateBuffer(void)
Subclasses should call this to free the internal buffer.
*/
void ServerBitmap::_FreeBuffer(void)
void
ServerBitmap::_FreeBuffer(void)
{
if(fBuffer!=NULL)
{
delete fBuffer;
fBuffer=NULL;
}
delete fBuffer;
fBuffer = NULL;
}
/*!
\brief Internal function used to translate color space values to appropriate internal
values.
\param space Color space for the bitmap.
\param bytesperline Number of bytes per row.
\param bytesPerRow Number of bytes per row to be used as an override.
*/
void ServerBitmap::_HandleSpace(color_space space, int32 bytesperline)
void
ServerBitmap::_HandleSpace(color_space space, int32 bytesPerRow)
{
// Big convoluted mess just to handle every color space and dword align
// the buffer
switch(space)
{
// Buffer is dword-aligned, so nothing need be done
// aside from allocate the memory
// calculate the minimum bytes per row
// set fBitsPerPixel
int32 minBPR = 0;
switch(space) {
// 32-bit
case B_RGB32:
case B_RGBA32:
case B_RGB32_BIG:
@ -154,8 +158,11 @@ void ServerBitmap::_HandleSpace(color_space space, int32 bytesperline)
case B_CMY32:
case B_CMYA32:
case B_CMYK32:
minBPR = fWidth * 4;
fBitsPerPixel = 32;
break;
// 24-bit = 32-bit with extra 8 bits ignored
// 24-bit
case B_RGB24_BIG:
case B_RGB24:
case B_LAB24:
@ -164,64 +171,14 @@ void ServerBitmap::_HandleSpace(color_space space, int32 bytesperline)
case B_HSV24:
case B_HLS24:
case B_CMY24:
{
if(bytesperline<(fWidth*4))
fBytesPerRow=fWidth*4;
else
fBytesPerRow=bytesperline;
fBitsPerPixel=32;
// TODO: These last two are calculated
// (width + 3) / 4 * 12
// in Bitmap.cpp, I don't understand why though.
case B_YCbCr444:
case B_YUV444:
minBPR = fWidth * 3;
fBitsPerPixel = 24;
break;
}
// Calculate size and dword-align
// 1-bit
case B_GRAY1:
{
int32 numbytes=fWidth>>3;
if((fWidth % 8) != 0)
numbytes++;
if(bytesperline<numbytes)
{
for(int8 i=0;i<4;i++)
{
if( (numbytes+i)%4==0)
{
fBytesPerRow=numbytes+i;
break;
}
}
}
else
fBytesPerRow=bytesperline;
fBitsPerPixel=1;
}
// 8-bit
case B_CMAP8:
case B_GRAY8:
case B_YUV411:
case B_YUV420:
case B_YCbCr422:
case B_YCbCr411:
case B_YCbCr420:
case B_YUV422:
{
if(bytesperline<fWidth)
{
for(int8 i=0;i<4;i++)
{
if( (fWidth+i)%4==0)
{
fBytesPerRow=fWidth+i;
break;
}
}
}
else
fBytesPerRow=bytesperline;
fBitsPerPixel=8;
break;
}
// 16-bit
case B_YUV9:
@ -232,43 +189,80 @@ void ServerBitmap::_HandleSpace(color_space space, int32 bytesperline)
case B_RGB16_BIG:
case B_RGB15_BIG:
case B_RGBA15_BIG:
case B_YCbCr444:
case B_YUV444:
{
if(bytesperline<fWidth*2)
{
if( (fWidth*2) % 4 !=0)
fBytesPerRow=(fWidth+1)*2;
else
fBytesPerRow=fWidth*2;
}
else
fBytesPerRow=bytesperline;
fBitsPerPixel=16;
minBPR = fWidth * 2;
fBitsPerPixel = 16;
break;
}
case B_YCbCr422:
case B_YUV422:
minBPR = (fWidth + 3) / 4 * 8;
fBitsPerPixel = 16;
break;
// 8-bit
case B_CMAP8:
case B_GRAY8:
minBPR = fWidth;
fBitsPerPixel = 8;
break;
// 1-bit
case B_GRAY1:
minBPR = (fWidth + 7) / 8;
fBitsPerPixel = 1;
break;
// TODO: ??? get a clue what these mean
case B_YCbCr411:
case B_YUV411:
case B_YUV420:
case B_YCbCr420:
minBPR = (fWidth + 3) / 4 * 6;
fBitsPerPixel = 0;
break;
case B_NO_COLOR_SPACE:
fBitsPerPixel=0;
default:
fBitsPerPixel = 0;
break;
}
if (minBPR > 0 || bytesPerRow > 0) {
// add the padding or use the provided bytesPerRow if sufficient
if (bytesPerRow >= minBPR) {
fBytesPerRow = bytesPerRow;
} else {
fBytesPerRow = ((minBPR + 3) / 4) * 4;
}
}
}
UtilityBitmap::UtilityBitmap(BRect rect,color_space space, int32 flags,
int32 bytesperline, screen_id screen)
: ServerBitmap(rect,space,flags,bytesperline,screen)
UtilityBitmap::UtilityBitmap(BRect rect, color_space space,
int32 flags, int32 bytesperline,
screen_id screen)
: ServerBitmap(rect, space, flags, bytesperline, screen)
{
_AllocateBuffer();
}
UtilityBitmap::UtilityBitmap(const ServerBitmap *bmp)
: ServerBitmap(bmp)
UtilityBitmap::UtilityBitmap(const ServerBitmap* bmp)
: ServerBitmap(bmp)
{
_AllocateBuffer();
if(bmp->Bits())
memcpy(Bits(),bmp->Bits(),bmp->BitsLength());
if (bmp->Bits())
memcpy(Bits(), bmp->Bits(), bmp->BitsLength());
}
UtilityBitmap::~UtilityBitmap(void)
UtilityBitmap::UtilityBitmap(const uint8* alreadyPaddedData,
uint32 width, uint32 height,
color_space format)
: ServerBitmap(BRect(0, 0, width - 1, height - 1), format, 0)
{
_AllocateBuffer();
if (Bits())
memcpy(Bits(), alreadyPaddedData, BitsLength());
}
UtilityBitmap::~UtilityBitmap()
{
_FreeBuffer();
}