static boolean istream_fill_input_buffer(j_decompress_ptr cinfo)
{
SourceManager *sourceManager = reinterpret_cast<SourceManager*>(cinfo->src);
sourceManager->is->read(sourceManager->buffer, BUFFERSIZE);
cinfo->src->next_input_byte =
reinterpret_cast<const JOCTET*>(sourceManager->buffer);
if (sourceManager->is->gcount() == 0)
{
/* Insert a fake EOI marker */
sourceManager->buffer[0] = JOCTET(0xFF);
sourceManager->buffer[1] = JOCTET(JPEG_EOI);
cinfo->src->bytes_in_buffer = 2;
}
else
cinfo->src->bytes_in_buffer = sourceManager->is->gcount();
return TRUE;
}
boolean fill_input_buffer(j_decompress_ptr cinfo)
{
my_source_mgr* src = (my_source_mgr*)cinfo->src;
Q_ASSERT(src->inDevice);
int readSize = src->inDevice->read((char*)src->buffer, BUFFER_SIZE);
if (readSize > 0)
{
src->pub.next_input_byte = src->buffer;
src->pub.bytes_in_buffer = readSize;
}
else
{
/**
* JPEG file is broken. We feed the decoder with fake EOI, as specified
* in the libjpeg documentation.
*/
static JOCTET fakeEOI[2] = { JOCTET(0xFF), JOCTET(JPEG_EOI)};
kWarning() << "Image is incomplete";
src->pub.next_input_byte = fakeEOI;
src->pub.bytes_in_buffer = 2;
}
return true;
}
