src/ports/SkImageDecoder_empty.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"

extern SkImageDecoder* SkImageDecoder_GIF_Factory(SkStream*);
extern SkImageDecoder* SkImageDecoder_BMP_Factory(SkStream*);
extern SkImageDecoder* SkImageDecoder_ICO_Factory(SkStream*);
extern SkImageDecoder* SkImageDecoder_PNG_Factory(SkStream*);
extern SkImageDecoder* SkImageDecoder_WBMP_Factory(SkStream*);
extern SkImageDecoder* SkImageDecoder_JPEG_Factory(SkStream*);

typedef SkImageDecoder* (*SkImageDecoderFactoryProc)(SkStream*);

struct CodecFormat {
    SkImageDecoderFactoryProc   fProc;
    SkImageDecoder::Format      fFormat;
};

static const CodecFormat gPairs[] = {
#if 0
    { SkImageDecoder_GIF_Factory,   SkImageDecoder::kGIF_Format },
    { SkImageDecoder_PNG_Factory,   SkImageDecoder::kPNG_Format },
    { SkImageDecoder_ICO_Factory,   SkImageDecoder::kICO_Format },
    { SkImageDecoder_WBMP_Factory,  SkImageDecoder::kWBMP_Format },
    { SkImageDecoder_BMP_Factory,   SkImageDecoder::kBMP_Format },
    { SkImageDecoder_JPEG_Factory,  SkImageDecoder::kJPEG_Format }
#endif
};

SkImageDecoder* SkImageDecoder::Factory(SkStream* stream) {
    for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
        SkImageDecoder* codec = gPairs[i].fProc(stream);
        stream->rewind();
        if (NULL != codec) {
            return codec;
        }
    }
    return NULL;
}

bool SkImageDecoder::SupportsFormat(Format format) {
    for (size_t i = 0; i < SK_ARRAY_COUNT(gPairs); i++) {
        if (gPairs[i].fFormat == format) {
            return true;
        }
    }
    return false;
}

/////////////////////////////////////////////////////////////////////////

typedef SkMovie* (*SkMovieFactoryProc)(SkStream*);

extern SkMovie* SkMovie_GIF_Factory(SkStream*);

static const SkMovieFactoryProc gMovieProcs[] = {
#if 0
    SkMovie_GIF_Factory
#endif
};

SkMovie* SkMovie::DecodeStream(SkStream* stream) {
    for (unsigned i = 0; i < SK_ARRAY_COUNT(gMovieProcs); i++) {
        SkMovie* movie = gMovieProcs[i](stream);
        if (NULL != movie) {
            return movie;
        }
        stream->rewind();
    }
    return NULL;
}

/////////////////////////////////////////////////////////////////////////

extern SkImageEncoder* SkImageEncoder_JPEG_Factory();
extern SkImageEncoder* SkImageEncoder_PNG_Factory();

SkImageEncoder* SkImageEncoder::Create(Type t) {
    switch (t) {
#if 0
        case kJPEG_Type:
            return SkImageEncoder_JPEG_Factory();
        case kPNG_Type:
            return SkImageEncoder_PNG_Factory();
#endif
        default:
            return NULL;
    }
}