Updates to images project.

src/images/SkImageDecoder_Factory.cpp

-
-/*
- * Copyright 2006 The Android Open Source Project
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-
-#include "SkImageDecoder.h"
-#include "SkMovie.h"
-#include "SkStream.h"
-#include "SkTRegistry.h"
-
-typedef SkTRegistry<SkImageDecoder*, SkStream*> DecodeReg;
-
-// N.B. You can't use "DecodeReg::gHead here" due to complex C++
-// corner cases.
-template DecodeReg* SkTRegistry<SkImageDecoder*, SkStream*>::gHead;
-
-SkImageDecoder* SkImageDecoder::Factory(SkStream* stream) {
-    SkImageDecoder* codec = NULL;
-    const DecodeReg* curr = DecodeReg::Head();
-    while (curr) {
-        codec = curr->factory()(stream);
-        // we rewind here, because we promise later when we call "decode", that
-        // the stream will be at its beginning.
-        bool rewindSuceeded = stream->rewind();
-
-        // our image decoder's require that rewind is supported so we fail early
-        // if we are given a stream that does not support rewinding.
-        if (!rewindSuceeded) {
-            SkDEBUGF(("Unable to rewind the image stream."));
-            SkDELETE(codec);
-            return NULL;
-        }
-
-        if (codec) {
-            return codec;
-        }
-        curr = curr->next();
-    }
-    return NULL;
-}
-
-/////////////////////////////////////////////////////////////////////////
-
-typedef SkTRegistry<SkMovie*, SkStream*> MovieReg;
-
-SkMovie* SkMovie::DecodeStream(SkStream* stream) {
-    const MovieReg* curr = MovieReg::Head();
-    while (curr) {
-        SkMovie* movie = curr->factory()(stream);
-        if (movie) {
-            return movie;
-        }
-        // we must rewind only if we got NULL, since we gave the stream to the
-        // movie, who may have already started reading from it
-        stream->rewind();
-        curr = curr->next();
-    }
-    return NULL;
-}