/*

 * Copyright (C) 2009 Apple, Inc. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * 1.  Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 * 2.  Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     its contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY

 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#include "config.h"

#include "DumpRenderTree.h"

#include "LayoutTestController.h"

#include "PixelDumpSupport.h"

#include <cstdio>

#include <wtf/Assertions.h>

#include <wtf/RefPtr.h>

#if PLATFORM(CG)

#include "PixelDumpSupportCG.h"

#elif PLATFORM(CAIRO)

#include "PixelDumpSupportCairo.h"

#endif

void dumpWebViewAsPixelsAndCompareWithExpected(const std::string& expectedHash)

{

    RefPtr<BitmapContext> context;

#if PLATFORM(MAC)

    if (gLayoutTestController->isPrinting())

        context = createPagedBitmapContext();

    else

#endif

        context = createBitmapContextFromWebView(gLayoutTestController->testOnscreen(), gLayoutTestController->testRepaint(), gLayoutTestController->testRepaintSweepHorizontally(), gLayoutTestController->dumpSelectionRect());

    ASSERT(context);

    // Compute the hash of the bitmap context pixels

    char actualHash[33];

    computeMD5HashStringForBitmapContext(context.get(), actualHash);

    printf("\nActualHash: %s\n", actualHash);

    // Check the computed hash against the expected one and dump image on mismatch

    bool dumpImage = true;

    if (expectedHash.length() > 0) {

        ASSERT(expectedHash.length() == 32);

        printf("\nExpectedHash: %s\n", expectedHash.c_str());

        if (expectedHash == actualHash)     // FIXME: do case insensitive compare

            dumpImage = false;

    }

    if (dumpImage)

      dumpBitmap(context.get());

}

void printPNG(const unsigned char* data, const size_t dataLength)

{

    printf("Content-Type: %s\n", "image/png");

    printf("Content-Length: %lu\n", static_cast<unsigned long>(dataLength));

    const size_t bytesToWriteInOneChunk = 1 << 15;

    size_t dataRemainingToWrite = dataLength;

    while (dataRemainingToWrite) {

        size_t bytesToWriteInThisChunk = std::min(dataRemainingToWrite, bytesToWriteInOneChunk);

        size_t bytesWritten = fwrite(data, 1, bytesToWriteInThisChunk, stdout);

        if (bytesWritten != bytesToWriteInThisChunk)

            break;

        dataRemainingToWrite -= bytesWritten;

        data += bytesWritten;

    }

}