Revert of r13347 (Serialization of SkPictureImageFilter - https://codereview.chromium.org/138063005) due to bump in skp file format

git-svn-id: http://skia.googlecode.com/svn/trunk@13348 2bbb7eff-a529-9590-31e7-b0007b416f81

4 files changed, 19 insertions, 148 deletions

diff --git a/src/core/SkPicture.cpp b/src/core/SkPicture.cpp
index 0d31ab403e..ca1b6fa22a 100644
--- a/src/core/SkPicture.cpp
+++ b/src/core/SkPicture.cpp
@@ -265,7 +265,6 @@ void SkPicture::draw(SkCanvas* surface, SkDrawPictureCallback* callback) {
 #include "SkStream.h"
 
 static const char kMagic[] = { 's', 'k', 'i', 'a', 'p', 'i', 'c', 't' };
-static const size_t kHeaderSize = sizeof(kMagic) + sizeof(SkPictInfo);
 
 bool SkPicture::StreamIsSKP(SkStream* stream, SkPictInfo* pInfo) {
     if (NULL == stream) {
@@ -274,8 +273,8 @@ bool SkPicture::StreamIsSKP(SkStream* stream, SkPictInfo* pInfo) {
 
     // Check magic bytes.
     char magic[sizeof(kMagic)];
-    if (!stream->read(magic, sizeof(kMagic)) ||
-        (0 != memcmp(magic, kMagic, sizeof(kMagic)))) {
+    stream->read(magic, sizeof(kMagic));
+    if (0 != memcmp(magic, kMagic, sizeof(kMagic))) {
         return false;
     }
 
@@ -294,30 +293,6 @@ bool SkPicture::StreamIsSKP(SkStream* stream, SkPictInfo* pInfo) {
     return true;
 }
 
-bool SkPicture::BufferIsSKP(SkReadBuffer& buffer, SkPictInfo* pInfo) {
-    // Check magic bytes.
-    char magic[sizeof(kMagic)];
-    
-    if (!buffer.readByteArray(magic, sizeof(kMagic)) ||
-        (0 != memcmp(magic, kMagic, sizeof(kMagic)))) {
-        return false;
-    }
-
-    SkPictInfo info;
-    if (!buffer.readByteArray(&info, sizeof(SkPictInfo))) {
-        return false;
-    }
-
-    if (PICTURE_VERSION != info.fVersion) {
-        return false;
-    }
-
-    if (pInfo != NULL) {
-        *pInfo = info;
-    }
-    return true;
-}
-
 SkPicture::SkPicture(SkPicturePlayback* playback, int width, int height)
     : fPlayback(playback)
     , fRecord(NULL)
@@ -345,56 +320,31 @@ SkPicture* SkPicture::CreateFromStream(SkStream* stream, InstallPixelRefProc pro
     return SkNEW_ARGS(SkPicture, (playback, info.fWidth, info.fHeight));
 }
 
-SkPicture* SkPicture::CreateFromBuffer(SkReadBuffer& buffer) {
-    SkPictInfo info;
-
-    if (!BufferIsSKP(buffer, &info)) {
-        return NULL;
-    }
+void SkPicture::serialize(SkWStream* stream, EncodeBitmap encoder) const {
+    SkPicturePlayback* playback = fPlayback;
 
-    SkPicturePlayback* playback;
-    // Check to see if there is a playback to recreate.
-    if (buffer.readBool()) {
-        playback = SkPicturePlayback::CreateFromBuffer(buffer);
-        if (NULL == playback) {
-            return NULL;
-        }
-    } else {
-        playback = NULL;
+    if (NULL == playback && fRecord) {
+        playback = SkNEW_ARGS(SkPicturePlayback, (*fRecord));
     }
 
-    return SkNEW_ARGS(SkPicture, (playback, info.fWidth, info.fHeight));
-}
+    SkPictInfo info;
 
-void SkPicture::createHeader(void* header) const {
-    // Copy magic bytes at the beginning of the header
-    SkASSERT(sizeof(kMagic) == 8);
-    memcpy(header, kMagic, sizeof(kMagic));
-
-    // Set piture info after magic bytes in the header
-    SkPictInfo* info = (SkPictInfo*)(((char*)header) + sizeof(kMagic));
-    info->fVersion = PICTURE_VERSION;
-    info->fWidth = fWidth;
-    info->fHeight = fHeight;
-    info->fFlags = SkPictInfo::kCrossProcess_Flag;
+    info.fVersion = PICTURE_VERSION;
+    info.fWidth = fWidth;
+    info.fHeight = fHeight;
+    info.fFlags = SkPictInfo::kCrossProcess_Flag;
     // TODO: remove this flag, since we're always float (now)
-    info->fFlags |= SkPictInfo::kScalarIsFloat_Flag;
+    info.fFlags |= SkPictInfo::kScalarIsFloat_Flag;
 
     if (8 == sizeof(void*)) {
-        info->fFlags |= SkPictInfo::kPtrIs64Bit_Flag;
+        info.fFlags |= SkPictInfo::kPtrIs64Bit_Flag;
     }
-}
 
-void SkPicture::serialize(SkWStream* stream, EncodeBitmap encoder) const {
-    SkPicturePlayback* playback = fPlayback;
-
-    if (NULL == playback && fRecord) {
-        playback = SkNEW_ARGS(SkPicturePlayback, (*fRecord));
-    }
+    // Write 8 magic bytes to ID this file format.
+    SkASSERT(sizeof(kMagic) == 8);
+    stream->write(kMagic, sizeof(kMagic));
 
-    char header[kHeaderSize];
-    createHeader(&header);
-    stream->write(header, kHeaderSize);
+    stream->write(&info, sizeof(info));
     if (playback) {
         stream->writeBool(true);
         playback->serialize(stream, encoder);
@@ -407,28 +357,6 @@ void SkPicture::serialize(SkWStream* stream, EncodeBitmap encoder) const {
     }
 }
 
-void SkPicture::flatten(SkWriteBuffer& buffer) const {
-    SkPicturePlayback* playback = fPlayback;
-
-    if (NULL == playback && fRecord) {
-        playback = SkNEW_ARGS(SkPicturePlayback, (*fRecord));
-    }
-
-    char header[kHeaderSize];
-    createHeader(&header);
-    buffer.writeByteArray(header, kHeaderSize);
-    if (playback) {
-        buffer.writeBool(true);
-        playback->flatten(buffer);
-        // delete playback if it is a local version (i.e. cons'd up just now)
-        if (playback != fPlayback) {
-            SkDELETE(playback);
-        }
-    } else {
-        buffer.writeBool(false);
-    }
-}
-
 bool SkPicture::willPlayBackBitmaps() const {
     if (!fPlayback) return false;
     return fPlayback->containsBitmaps();
diff --git a/src/core/SkPicturePlayback.cpp b/src/core/SkPicturePlayback.cpp
index 8b8c6b0862..e71a17fda5 100644
--- a/src/core/SkPicturePlayback.cpp
+++ b/src/core/SkPicturePlayback.cpp
@@ -431,22 +431,6 @@ void SkPicturePlayback::serialize(SkWStream* stream,
     stream->write32(PICT_EOF_TAG);
 }
 
-void SkPicturePlayback::flatten(SkWriteBuffer& buffer) const {
-    writeTagSize(buffer, PICT_READER_TAG, fOpData->size());
-    buffer.writeByteArray(fOpData->bytes(), fOpData->size());
-
-    if (fPictureCount > 0) {
-        writeTagSize(buffer, PICT_PICTURE_TAG, fPictureCount);
-        for (int i = 0; i < fPictureCount; i++) {
-            fPictureRefs[i]->flatten(buffer);
-        }
-    }
-
-    // Write this picture playback's data into a writebuffer
-    this->flattenToBuffer(buffer);
-    buffer.write32(PICT_EOF_TAG);
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 
 /**
@@ -609,15 +593,6 @@ SkPicturePlayback* SkPicturePlayback::CreateFromStream(SkStream* stream,
     return playback.detach();
 }
 
-SkPicturePlayback* SkPicturePlayback::CreateFromBuffer(SkReadBuffer& buffer) {
-    SkAutoTDelete<SkPicturePlayback> playback(SkNEW(SkPicturePlayback));
-
-    if (!playback->parseBuffer(buffer)) {
-        return NULL;
-    }
-    return playback.detach();
-}
-
 bool SkPicturePlayback::parseStream(SkStream* stream, const SkPictInfo& info,
                                     SkPicture::InstallPixelRefProc proc) {
     for (;;) {
@@ -634,21 +609,6 @@ bool SkPicturePlayback::parseStream(SkStream* stream, const SkPictInfo& info,
     return true;
 }
 
-bool SkPicturePlayback::parseBuffer(SkReadBuffer& buffer) {
-    for (;;) {
-        uint32_t tag = buffer.readUInt();
-        if (PICT_EOF_TAG == tag) {
-            break;
-        }
-
-        uint32_t size = buffer.readUInt();
-        if (!this->parseBufferTag(buffer, tag, size)) {
-            return false; // we're invalid
-        }
-    }
-    return true;
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/src/core/SkPicturePlayback.h b/src/core/SkPicturePlayback.h
index 909488b4b7..efa67225b5 100644
--- a/src/core/SkPicturePlayback.h
+++ b/src/core/SkPicturePlayback.h
@@ -64,14 +64,12 @@ public:
     explicit SkPicturePlayback(const SkPictureRecord& record, bool deepCopy = false);
     static SkPicturePlayback* CreateFromStream(SkStream*, const SkPictInfo&,
                                                SkPicture::InstallPixelRefProc);
-    static SkPicturePlayback* CreateFromBuffer(SkReadBuffer&);
 
     virtual ~SkPicturePlayback();
 
     void draw(SkCanvas& canvas, SkDrawPictureCallback*);
 
     void serialize(SkWStream*, SkPicture::EncodeBitmap) const;
-    void flatten(SkWriteBuffer&) const;
 
     void dumpSize() const;
 
@@ -86,7 +84,6 @@ public:
 protected:
     bool parseStream(SkStream*, const SkPictInfo&,
                      SkPicture::InstallPixelRefProc);
-    bool parseBuffer(SkReadBuffer& buffer);
 #ifdef SK_DEVELOPER
     virtual bool preDraw(int opIndex, int type);
     virtual void postDraw(int opIndex);
diff --git a/src/effects/SkPictureImageFilter.cpp b/src/effects/SkPictureImageFilter.cpp
index 6e76231867..c78b2499ec 100644
--- a/src/effects/SkPictureImageFilter.cpp
+++ b/src/effects/SkPictureImageFilter.cpp
@@ -34,27 +34,13 @@ SkPictureImageFilter::~SkPictureImageFilter() {
 SkPictureImageFilter::SkPictureImageFilter(SkReadBuffer& buffer)
   : INHERITED(0, buffer),
     fPicture(NULL) {
-#ifdef SK_ALLOW_PICTUREIMAGEFILTER_SERIALIZATION
-    if (buffer.readBool()) {
-        fPicture = SkPicture::CreateFromBuffer(buffer);
-    }
-#else
-    buffer.readBool();
-#endif
+    // FIXME: unflatten picture here.
     buffer.readRect(&fRect);
 }
 
 void SkPictureImageFilter::flatten(SkWriteBuffer& buffer) const {
     this->INHERITED::flatten(buffer);
-#ifdef SK_ALLOW_PICTUREIMAGEFILTER_SERIALIZATION
-    bool hasPicture = (fPicture != NULL);
-    buffer.writeBool(hasPicture);
-    if (hasPicture) {
-        fPicture->flatten(buffer);
-    }
-#else
-    buffer.writeBool(false);
-#endif
+    // FIXME: flatten picture here.
     buffer.writeRect(fRect);
 }