Delete SkImageDecoder

src/images/SkImageDecoder_wbmp.cpp

Index: src/images/SkImageDecoder_wbmp.cpp
diff --git a/src/images/SkImageDecoder_wbmp.cpp b/src/images/SkImageDecoder_wbmp.cpp
deleted file mode 100644
index 335966b29aab8c4ee2e1f715ceff6afa4625fdd7..0000000000000000000000000000000000000000
--- a/src/images/SkImageDecoder_wbmp.cpp
+++ /dev/null
@@ -1,173 +0,0 @@
-
-/*
- * 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 "SkColor.h"
-#include "SkColorPriv.h"
-#include "SkMath.h"
-#include "SkStream.h"
-#include "SkTemplates.h"
-#include "SkUtils.h"
-
-class SkWBMPImageDecoder : public SkImageDecoder {
-public:
-    Format getFormat() const override {
-        return kWBMP_Format;
-    }
-
-protected:
-    Result onDecode(SkStream* stream, SkBitmap* bm, Mode) override;
-
-private:
-    typedef SkImageDecoder INHERITED;
-};
-
-static bool read_byte(SkStream* stream, uint8_t* data)
-{
-    return stream->read(data, 1) == 1;
-}
-
-static bool read_mbf(SkStream* stream, int* value)
-{
-    int n = 0;
-    uint8_t data;
-    do {
-        if (!read_byte(stream, &data)) {
-            return false;
-        }
-        n = (n << 7) | (data & 0x7F);
-    } while (data & 0x80);
-
-    *value = n;
-    return true;
-}
-
-struct wbmp_head {
-    int fWidth;
-    int fHeight;
-
-    bool init(SkStream* stream)
-    {
-        uint8_t data;
-
-        if (!read_byte(stream, &data) || data != 0) { // unknown type
-            return false;
-        }
-        if (!read_byte(stream, &data) || (data & 0x9F)) { // skip fixed header
-            return false;
-        }
-        if (!read_mbf(stream, &fWidth) || (unsigned)fWidth > 0xFFFF) {
-            return false;
-        }
-        if (!read_mbf(stream, &fHeight) || (unsigned)fHeight > 0xFFFF) {
-            return false;
-        }
-        return fWidth != 0 && fHeight != 0;
-    }
-};
-
-static void expand_bits_to_bytes(uint8_t dst[], const uint8_t src[], int bits)
-{
-    int bytes = bits >> 3;
-
-    for (int i = 0; i < bytes; i++) {
-        unsigned mask = *src++;
-        dst[0] = (mask >> 7) & 1;
-        dst[1] = (mask >> 6) & 1;
-        dst[2] = (mask >> 5) & 1;
-        dst[3] = (mask >> 4) & 1;
-        dst[4] = (mask >> 3) & 1;
-        dst[5] = (mask >> 2) & 1;
-        dst[6] = (mask >> 1) & 1;
-        dst[7] = (mask >> 0) & 1;
-        dst += 8;
-    }
-
-    bits &= 7;
-    if (bits > 0) {
-        unsigned mask = *src;
-        do {
-            *dst++ = (mask >> 7) & 1;
-            mask <<= 1;
-        } while (--bits != 0);
-    }
-}
-
-SkImageDecoder::Result SkWBMPImageDecoder::onDecode(SkStream* stream, SkBitmap* decodedBitmap,
-                                                    Mode mode)
-{
-    wbmp_head   head;
-
-    if (!head.init(stream)) {
-        return kFailure;
-    }
-
-    int width = head.fWidth;
-    int height = head.fHeight;
-
-    decodedBitmap->setInfo(SkImageInfo::Make(width, height,
-                                             kIndex_8_SkColorType, kOpaque_SkAlphaType));
-
-    if (SkImageDecoder::kDecodeBounds_Mode == mode) {
-        return kSuccess;
-    }
-
-    const SkPMColor colors[] = { SK_ColorBLACK, SK_ColorWHITE };
-    SkColorTable* ct = new SkColorTable(colors, 2);
-    SkAutoUnref   aur(ct);
-
-    if (!this->allocPixelRef(decodedBitmap, ct)) {
-        return kFailure;
-    }
-
-    SkAutoLockPixels alp(*decodedBitmap);
-
-    uint8_t* dst = decodedBitmap->getAddr8(0, 0);
-    // store the 1-bit valuess at the end of our pixels, so we won't stomp
-    // on them before we're read them. Just trying to avoid a temp allocation
-    size_t srcRB = SkAlign8(width) >> 3;
-    size_t srcSize = height * srcRB;
-    uint8_t* src = dst + decodedBitmap->getSize() - srcSize;
-    if (stream->read(src, srcSize) != srcSize) {
-        return kFailure;
-    }
-
-    for (int y = 0; y < height; y++)
-    {
-        expand_bits_to_bytes(dst, src, width);
-        dst += decodedBitmap->rowBytes();
-        src += srcRB;
-    }
-
-    return kSuccess;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-DEFINE_DECODER_CREATOR(WBMPImageDecoder);
-///////////////////////////////////////////////////////////////////////////////
-
-static SkImageDecoder* sk_wbmp_dfactory(SkStreamRewindable* stream) {
-    wbmp_head   head;
-
-    if (head.init(stream)) {
-        return new SkWBMPImageDecoder;
-    }
-    return nullptr;
-}
-
-static SkImageDecoder::Format get_format_wbmp(SkStreamRewindable* stream) {
-    wbmp_head head;
-    if (head.init(stream)) {
-        return SkImageDecoder::kWBMP_Format;
-    }
-    return SkImageDecoder::kUnknown_Format;
-}
-
-static SkImageDecoder_DecodeReg gDReg(sk_wbmp_dfactory);
-static SkImageDecoder_FormatReg gFormatReg(get_format_wbmp);