skia2/experimental/DrawingBoard/SkNetPipeController.cpp

50 lines
1.3 KiB
C++

/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SkNetPipeController.h"
SkNetPipeController::SkNetPipeController(SkCanvas* target) : fReader(target) {
fBlock = NULL;
fBlockSize = fBytesWritten = 0;
fPlayback = true;
fStatus = SkGPipeReader::kDone_Status;
fTotalWritten = 0;
fAtomsWritten = 0;
}
SkNetPipeController::~SkNetPipeController() {
sk_free(fBlock);
}
int SkNetPipeController::writeToSocket(SkSocket* sockfd, SkSocket::DataType type) {
if (NULL != sockfd && fTotalWritten > 4)
return sockfd->writePacket(fBlock, fBytesWritten, type);
else
return -1;
}
void* SkNetPipeController::requestBlock(size_t minRequest, size_t* actual) {
sk_free(fBlock);
fBlockSize = minRequest * 4;
fBlock = sk_malloc_throw(fBlockSize);
fBytesWritten = 0;
*actual = fBlockSize;
return fBlock;
}
void SkNetPipeController::notifyWritten(size_t bytes) {
SkASSERT(fBytesWritten + bytes <= fBlockSize);
if (fPlayback) {
fStatus = fReader.playback((const char*)fBlock + fBytesWritten, bytes);
}
SkASSERT(SkGPipeReader::kError_Status != fStatus);
fBytesWritten += bytes;
fTotalWritten += bytes;
fAtomsWritten += 1;
}