1 
2 /*
3  * Copyright 2006 The Android Open Source Project
4  *
5  * Use of this source code is governed by a BSD-style license that can be
6  * found in the LICENSE file.
7  */
8 
9 #include "SkImageDecoder.h"
10 #include "SkMovie.h"
11 #include "SkStream.h"
12 
13 extern SkImageDecoder* image_decoder_from_stream(SkStreamRewindable*);
14 
Factory(SkStreamRewindable * stream)15 SkImageDecoder* SkImageDecoder::Factory(SkStreamRewindable* stream) {
16     return image_decoder_from_stream(stream);
17 }
18 
19 /////////////////////////////////////////////////////////////////////////
20 
21 typedef SkTRegistry<SkMovie*(*)(SkStreamRewindable*)> MovieReg;
22 
DecodeStream(SkStreamRewindable * stream)23 SkMovie* SkMovie::DecodeStream(SkStreamRewindable* stream) {
24     const MovieReg* curr = MovieReg::Head();
25     while (curr) {
26         SkMovie* movie = curr->factory()(stream);
27         if (movie) {
28             return movie;
29         }
30         // we must rewind only if we got NULL, since we gave the stream to the
31         // movie, who may have already started reading from it
32         stream->rewind();
33         curr = curr->next();
34     }
35     return NULL;
36 }
37