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Diffstat (limited to 'src/codec/SkCodec_libgif.cpp')
-rw-r--r--src/codec/SkCodec_libgif.cpp80
1 files changed, 31 insertions, 49 deletions
diff --git a/src/codec/SkCodec_libgif.cpp b/src/codec/SkCodec_libgif.cpp
index 250a0d63be..20a5572d14 100644
--- a/src/codec/SkCodec_libgif.cpp
+++ b/src/codec/SkCodec_libgif.cpp
@@ -21,8 +21,9 @@ bool SkGifCodec::IsGif(SkStream* stream) {
char buf[GIF_STAMP_LEN];
if (stream->read(buf, GIF_STAMP_LEN) == GIF_STAMP_LEN) {
if (memcmp(GIF_STAMP, buf, GIF_STAMP_LEN) == 0 ||
- memcmp(GIF87_STAMP, buf, GIF_STAMP_LEN) == 0 ||
- memcmp(GIF89_STAMP, buf, GIF_STAMP_LEN) == 0) {
+ memcmp(GIF87_STAMP, buf, GIF_STAMP_LEN) == 0 ||
+ memcmp(GIF89_STAMP, buf, GIF_STAMP_LEN) == 0)
+ {
return true;
}
}
@@ -39,8 +40,7 @@ static void gif_warning(const char* msg) {
/*
* Error function
*/
-static SkCodec::Result gif_error(const char* msg,
- SkCodec::Result result = SkCodec::kInvalidInput) {
+static SkCodec::Result gif_error(const char* msg, SkCodec::Result result = SkCodec::kInvalidInput) {
SkCodecPrintf("Gif Error: %s\n", msg);
return result;
}
@@ -49,8 +49,7 @@ static SkCodec::Result gif_error(const char* msg,
/*
* Read function that will be passed to gif_lib
*/
-static int32_t read_bytes_callback(GifFileType* fileType, GifByteType* out,
- int32_t size) {
+static int32_t read_bytes_callback(GifFileType* fileType, GifByteType* out, int32_t size) {
SkStream* stream = (SkStream*) fileType->UserData;
return (int32_t) stream->read(out, size);
}
@@ -96,8 +95,7 @@ static uint32_t find_trans_index(const SavedImage& image) {
// graphics control extension is always four bytes. The fourth byte
// is the transparent index (if it exists), so we need at least four
// bytes.
- if (GRAPHICS_EXT_FUNC_CODE == extBlock.Function &&
- extBlock.ByteCount >= 4) {
+ if (GRAPHICS_EXT_FUNC_CODE == extBlock.Function && extBlock.ByteCount >= 4) {
// Check the transparent color flag which indicates whether a
// transparent index exists. It is the least significant bit of
@@ -169,7 +167,7 @@ bool SkGifCodec::ReadHeader(SkStream* stream, SkCodec** codecOut, GifFileType**
// kPremul because we support kPremul, and it is more efficient to
// use kPremul directly even when kUnpremul is supported.
const SkImageInfo& imageInfo = SkImageInfo::Make(width, height,
- kIndex_8_SkColorType, kPremul_SkAlphaType);
+ kIndex_8_SkColorType, kPremul_SkAlphaType);
*codecOut = new SkGifCodec(imageInfo, streamDeleter.detach(), gif.detach());
} else {
SkASSERT(nullptr != gifOut);
@@ -192,8 +190,7 @@ SkCodec* SkGifCodec::NewFromStream(SkStream* stream) {
return nullptr;
}
-SkGifCodec::SkGifCodec(const SkImageInfo& srcInfo, SkStream* stream,
- GifFileType* gif)
+SkGifCodec::SkGifCodec(const SkImageInfo& srcInfo, SkStream* stream, GifFileType* gif)
: INHERITED(srcInfo, stream)
, fGif(gif)
{}
@@ -231,8 +228,7 @@ SkCodec::Result SkGifCodec::onGetPixels(const SkImageInfo& dstInfo,
return gif_error("Scaling not supported.\n", kInvalidScale);
}
if (!conversion_possible(dstInfo, this->getInfo())) {
- return gif_error("Cannot convert input type to output type.\n",
- kInvalidConversion);
+ return gif_error("Cannot convert input type to output type.\n", kInvalidConversion);
}
// Use this as a container to hold information about any gif extension
@@ -260,8 +256,7 @@ SkCodec::Result SkGifCodec::onGetPixels(const SkImageInfo& dstInfo,
case IMAGE_DESC_RECORD_TYPE: {
// Read the image descriptor
if (GIF_ERROR == DGifGetImageDesc(fGif)) {
- return gif_error("DGifGetImageDesc failed.\n",
- kInvalidInput);
+ return gif_error("DGifGetImageDesc failed.\n", kInvalidInput);
}
// If reading the image descriptor is successful, the image
@@ -277,8 +272,7 @@ SkCodec::Result SkGifCodec::onGetPixels(const SkImageInfo& dstInfo,
int32_t innerHeight = desc.Height;
// Fail on non-positive dimensions
if (innerWidth <= 0 || innerHeight <= 0) {
- return gif_error("Invalid dimensions for inner image.\n",
- kInvalidInput);
+ return gif_error("Invalid dimensions for inner image.\n", kInvalidInput);
}
// Treat the following cases as warnings and try to fix
if (innerWidth > width) {
@@ -327,8 +321,7 @@ SkCodec::Result SkGifCodec::onGetPixels(const SkImageInfo& dstInfo,
}
if (nullptr != colorMap) {
colorCount = colorMap->ColorCount;
- SkASSERT(colorCount ==
- (unsigned) (1 << (colorMap->BitsPerPixel)));
+ SkASSERT(colorCount == (unsigned) (1 << (colorMap->BitsPerPixel)));
SkASSERT(colorCount <= 256);
for (uint32_t i = 0; i < colorCount; i++) {
colorTable[i] = SkPackARGB32(0xFF,
@@ -384,24 +377,21 @@ SkCodec::Result SkGifCodec::onGetPixels(const SkImageInfo& dstInfo,
if (innerWidth < width || innerHeight < height) {
// Modify the destination info
- const SkImageInfo subsetDstInfo =
- dstInfo.makeWH(innerWidth, innerHeight);
+ const SkImageInfo subsetDstInfo = dstInfo.makeWH(innerWidth, innerHeight);
// Fill the destination with the fill color
// FIXME: This may not be the behavior that we want for
// animated gifs where we draw on top of the
// previous frame.
if (!skipBackground) {
- SkSwizzler::Fill(dst, dstInfo, dstRowBytes, height,
- fillIndex, colorTable);
+ SkSwizzler::Fill(dst, dstInfo, dstRowBytes, height, fillIndex, colorTable);
}
// Modify the dst pointer
- const int32_t dstBytesPerPixel =
- SkColorTypeBytesPerPixel(dstColorType);
+ const int32_t dstBytesPerPixel = SkColorTypeBytesPerPixel(dstColorType);
dst = SkTAddOffset<void*>(dst,
- dstRowBytes * imageTop +
- dstBytesPerPixel * imageLeft);
+ dstRowBytes * imageTop +
+ dstBytesPerPixel * imageLeft);
// Create the subset swizzler
swizzler.reset(SkSwizzler::CreateSwizzler(
@@ -424,14 +414,13 @@ SkCodec::Result SkGifCodec::onGetPixels(const SkImageInfo& dstInfo,
// the rearranging.
SkGifInterlaceIter iter(innerHeight);
for (int32_t y = 0; y < innerHeight; y++) {
- if (GIF_ERROR == DGifGetLine(fGif, buffer.get(),
- innerWidth)) {
+ if (GIF_ERROR == DGifGetLine(fGif, buffer.get(), innerWidth)) {
// Recover from error by filling remainder of image
if (!skipBackground) {
memset(buffer.get(), fillIndex, innerWidth);
for (; y < innerHeight; y++) {
void* dstRow = SkTAddOffset<void>(dst,
- dstRowBytes * iter.nextY());
+ dstRowBytes * iter.nextY());
swizzler->swizzle(dstRow, buffer.get());
}
}
@@ -439,19 +428,17 @@ SkCodec::Result SkGifCodec::onGetPixels(const SkImageInfo& dstInfo,
"Could not decode line %d of %d.\n",
y, height - 1).c_str(), kIncompleteInput);
}
- void* dstRow = SkTAddOffset<void>(
- dst, dstRowBytes * iter.nextY());
+ void* dstRow = SkTAddOffset<void>(dst, dstRowBytes * iter.nextY());
swizzler->swizzle(dstRow, buffer.get());
}
} else {
// Standard mode
void* dstRow = dst;
for (int32_t y = 0; y < innerHeight; y++) {
- if (GIF_ERROR == DGifGetLine(fGif, buffer.get(),
- innerWidth)) {
+ if (GIF_ERROR == DGifGetLine(fGif, buffer.get(), innerWidth)) {
if (!skipBackground) {
SkSwizzler::Fill(dstRow, dstInfo, dstRowBytes,
- innerHeight - y, fillIndex, colorTable);
+ innerHeight - y, fillIndex, colorTable);
}
return gif_error(SkStringPrintf(
"Could not decode line %d of %d.\n",
@@ -490,26 +477,22 @@ SkCodec::Result SkGifCodec::onGetPixels(const SkImageInfo& dstInfo,
// such as transparency or animation.
case EXTENSION_RECORD_TYPE:
// Read extension data
- if (GIF_ERROR ==
- DGifGetExtension(fGif, &extFunction, &extData)) {
- return gif_error("Could not get extension.\n",
- kIncompleteInput);
+ if (GIF_ERROR == DGifGetExtension(fGif, &extFunction, &extData)) {
+ return gif_error("Could not get extension.\n", kIncompleteInput);
}
// Create an extension block with our data
while (nullptr != extData) {
// Add a single block
- if (GIF_ERROR ==
- GifAddExtensionBlock(&saveExt.ExtensionBlockCount,
- &saveExt.ExtensionBlocks, extFunction, extData[0],
- &extData[1])) {
- return gif_error("Could not add extension block.\n",
- kIncompleteInput);
+ if (GIF_ERROR == GifAddExtensionBlock(&saveExt.ExtensionBlockCount,
+ &saveExt.ExtensionBlocks,
+ extFunction, extData[0], &extData[1]))
+ {
+ return gif_error("Could not add extension block.\n", kIncompleteInput);
}
// Move to the next block
if (GIF_ERROR == DGifGetExtensionNext(fGif, &extData)) {
- return gif_error("Could not get next extension.\n",
- kIncompleteInput);
+ return gif_error("Could not get next extension.\n", kIncompleteInput);
}
}
break;
@@ -526,6 +509,5 @@ SkCodec::Result SkGifCodec::onGetPixels(const SkImageInfo& dstInfo,
}
} while (TERMINATE_RECORD_TYPE != recordType);
- return gif_error("Could not find any images to decode in gif file.\n",
- kInvalidInput);
+ return gif_error("Could not find any images to decode in gif file.\n", kInvalidInput);
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-04 22:15:05 +0000