#include "config.h"
#if ENABLE(3D_CANVAS)
#include "ArrayBuffer.h"
#include "Uint8Array.h"
namespace WebCore {
PassRefPtr<Uint8Array> Uint8Array::create(unsigned length)
{
RefPtr<ArrayBuffer> buffer = ArrayBuffer::create(length, sizeof(unsigned char));
return create(buffer, 0, length);
}
PassRefPtr<Uint8Array> Uint8Array::create(unsigned char* array, unsigned length)
{
RefPtr<Uint8Array> a = Uint8Array::create(length);
for (unsigned i = 0; i < length; ++i)
a->set(i, array[i]);
return a;
}
PassRefPtr<Uint8Array> Uint8Array::create(PassRefPtr<ArrayBuffer> buffer,
unsigned byteOffset,
unsigned length)
{
RefPtr<ArrayBuffer> buf(buffer);
if (!verifySubRange<unsigned char>(buf, byteOffset, length))
return 0;
return adoptRef(new Uint8Array(buf, byteOffset, length));
}
Uint8Array::Uint8Array(PassRefPtr<ArrayBuffer> buffer, unsigned byteOffset, unsigned length)
: ArrayBufferView(buffer, byteOffset)
, m_size(length)
{
}
unsigned Uint8Array::length() const {
return m_size;
}
unsigned Uint8Array::byteLength() const {
return m_size * sizeof(unsigned char);
}
PassRefPtr<ArrayBufferView> Uint8Array::slice(int start, int end)
{
unsigned offset, length;
calculateOffsetAndLength(start, end, m_size, &offset, &length);
clampOffsetAndNumElements<unsigned char>(buffer(), m_byteOffset, &offset, &length);
return create(buffer(), offset, length);
}
void Uint8Array::set(Uint8Array* array, unsigned offset, ExceptionCode& ec) {
setImpl(array, offset * sizeof(unsigned char), ec);
}
}
#endif // ENABLE(3D_CANVAS)