Index: Source/core/platform/image-encoders/skia/JPEGImageEncoder.cpp |
diff --git a/Source/core/platform/image-encoders/skia/JPEGImageEncoder.cpp b/Source/core/platform/image-encoders/skia/JPEGImageEncoder.cpp |
deleted file mode 100644 |
index bb7b6ad9b2d3bdd7c2e3a1b9db004d2fec8493fe..0000000000000000000000000000000000000000 |
--- a/Source/core/platform/image-encoders/skia/JPEGImageEncoder.cpp |
+++ /dev/null |
@@ -1,215 +0,0 @@ |
-/* |
- * Copyright (c) 2010, Google Inc. All rights reserved. |
- * |
- * Redistribution and use in source and binary forms, with or without |
- * modification, are permitted provided that the following conditions are |
- * met: |
- * |
- * * Redistributions of source code must retain the above copyright |
- * notice, this list of conditions and the following disclaimer. |
- * * Redistributions in binary form must reproduce the above |
- * copyright notice, this list of conditions and the following disclaimer |
- * in the documentation and/or other materials provided with the |
- * distribution. |
- * * Neither the name of Google Inc. nor the names of its |
- * contributors may be used to endorse or promote products derived from |
- * this software without specific prior written permission. |
- * |
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- */ |
- |
-#include "config.h" |
-#include "core/platform/image-encoders/skia/JPEGImageEncoder.h" |
- |
-#include "SkBitmap.h" |
-#include "SkColorPriv.h" |
-#include "core/platform/graphics/ImageBuffer.h" |
-#include "platform/geometry/IntSize.h" |
-extern "C" { |
-#include <setjmp.h> |
-#include <stdio.h> // jpeglib.h needs stdio.h FILE |
-#include "jpeglib.h" |
-} |
- |
-namespace WebCore { |
- |
-struct JPEGOutputBuffer : public jpeg_destination_mgr { |
- Vector<unsigned char>* output; |
- Vector<unsigned char> buffer; |
-}; |
- |
-static void prepareOutput(j_compress_ptr cinfo) |
-{ |
- JPEGOutputBuffer* out = static_cast<JPEGOutputBuffer*>(cinfo->dest); |
- const size_t internalBufferSize = 8192; |
- out->buffer.resize(internalBufferSize); |
- out->next_output_byte = out->buffer.data(); |
- out->free_in_buffer = out->buffer.size(); |
-} |
- |
-static boolean writeOutput(j_compress_ptr cinfo) |
-{ |
- JPEGOutputBuffer* out = static_cast<JPEGOutputBuffer*>(cinfo->dest); |
- out->output->append(out->buffer.data(), out->buffer.size()); |
- out->next_output_byte = out->buffer.data(); |
- out->free_in_buffer = out->buffer.size(); |
- return TRUE; |
-} |
- |
-static void finishOutput(j_compress_ptr cinfo) |
-{ |
- JPEGOutputBuffer* out = static_cast<JPEGOutputBuffer*>(cinfo->dest); |
- const size_t size = out->buffer.size() - out->free_in_buffer; |
- out->output->append(out->buffer.data(), size); |
-} |
- |
-static void handleError(j_common_ptr common) |
-{ |
- jmp_buf* jumpBufferPtr = static_cast<jmp_buf*>(common->client_data); |
- longjmp(*jumpBufferPtr, -1); |
-} |
- |
-static void preMultipliedBGRAtoRGB(const unsigned char* pixels, unsigned int pixelCount, unsigned char* output) |
-{ |
- const SkPMColor* input = reinterpret_cast_ptr<const SkPMColor*>(pixels); |
- for (; pixelCount-- > 0; ++input) { |
- *output++ = SkGetPackedR32(*input); |
- *output++ = SkGetPackedG32(*input); |
- *output++ = SkGetPackedB32(*input); |
- } |
-} |
- |
-static void RGBAtoRGB(const unsigned char* pixels, unsigned int pixelCount, unsigned char* output) |
-{ |
- for (; pixelCount-- > 0; pixels += 4) { |
- // Do source-over composition on black. |
- unsigned char alpha = pixels[3]; |
- if (alpha != 255) { |
- *output++ = SkMulDiv255Round(pixels[0], alpha); |
- *output++ = SkMulDiv255Round(pixels[1], alpha); |
- *output++ = SkMulDiv255Round(pixels[2], alpha); |
- } else { |
- *output++ = pixels[0]; |
- *output++ = pixels[1]; |
- *output++ = pixels[2]; |
- } |
- } |
-} |
- |
-static void disableSubsamplingForHighQuality(jpeg_compress_struct* cinfo, int quality) |
-{ |
- if (quality < 100) |
- return; |
- |
- for (int i = 0; i < MAX_COMPONENTS; ++i) { |
- cinfo->comp_info[i].h_samp_factor = 1; |
- cinfo->comp_info[i].v_samp_factor = 1; |
- } |
-} |
- |
-static bool encodePixels(IntSize imageSize, unsigned char* inputPixels, bool premultiplied, int quality, Vector<unsigned char>* output) |
-{ |
- JPEGOutputBuffer destination; |
- destination.output = output; |
- Vector<JSAMPLE> row; |
- |
- jpeg_compress_struct cinfo; |
- jpeg_error_mgr error; |
- cinfo.err = jpeg_std_error(&error); |
- error.error_exit = handleError; |
- jmp_buf jumpBuffer; |
- cinfo.client_data = &jumpBuffer; |
- |
- if (setjmp(jumpBuffer)) { |
- jpeg_destroy_compress(&cinfo); |
- return false; |
- } |
- |
- jpeg_create_compress(&cinfo); |
- cinfo.dest = &destination; |
- cinfo.dest->init_destination = prepareOutput; |
- cinfo.dest->empty_output_buffer = writeOutput; |
- cinfo.dest->term_destination = finishOutput; |
- |
- imageSize.clampNegativeToZero(); |
- cinfo.image_height = imageSize.height(); |
- cinfo.image_width = imageSize.width(); |
- |
-#if defined(JCS_EXTENSIONS) |
- if (premultiplied) { |
- cinfo.in_color_space = SK_B32_SHIFT ? JCS_EXT_RGBX : JCS_EXT_BGRX; |
- |
- cinfo.input_components = 4; |
- |
- jpeg_set_defaults(&cinfo); |
- jpeg_set_quality(&cinfo, quality, TRUE); |
- disableSubsamplingForHighQuality(&cinfo, quality); |
- jpeg_start_compress(&cinfo, TRUE); |
- |
- unsigned char* pixels = inputPixels; |
- const size_t pixelRowStride = cinfo.image_width * 4; |
- while (cinfo.next_scanline < cinfo.image_height) { |
- jpeg_write_scanlines(&cinfo, &pixels, 1); |
- pixels += pixelRowStride; |
- } |
- |
- jpeg_finish_compress(&cinfo); |
- jpeg_destroy_compress(&cinfo); |
- return true; |
- } |
-#endif |
- |
- cinfo.in_color_space = JCS_RGB; |
- cinfo.input_components = 3; |
- |
- void (*extractRowRGB)(const unsigned char*, unsigned int, unsigned char* output); |
- extractRowRGB = &RGBAtoRGB; |
- if (premultiplied) |
- extractRowRGB = &preMultipliedBGRAtoRGB; |
- |
- jpeg_set_defaults(&cinfo); |
- jpeg_set_quality(&cinfo, quality, TRUE); |
- disableSubsamplingForHighQuality(&cinfo, quality); |
- jpeg_start_compress(&cinfo, TRUE); |
- |
- unsigned char* pixels = inputPixels; |
- row.resize(cinfo.image_width * cinfo.input_components); |
- const size_t pixelRowStride = cinfo.image_width * 4; |
- while (cinfo.next_scanline < cinfo.image_height) { |
- JSAMPLE* rowData = row.data(); |
- extractRowRGB(pixels, cinfo.image_width, rowData); |
- jpeg_write_scanlines(&cinfo, &rowData, 1); |
- pixels += pixelRowStride; |
- } |
- |
- jpeg_finish_compress(&cinfo); |
- jpeg_destroy_compress(&cinfo); |
- return true; |
-} |
- |
-bool JPEGImageEncoder::encode(const SkBitmap& bitmap, int quality, Vector<unsigned char>* output) |
-{ |
- SkAutoLockPixels bitmapLock(bitmap); |
- |
- if (bitmap.config() != SkBitmap::kARGB_8888_Config || !bitmap.getPixels()) |
- return false; // Only support 32 bit/pixel skia bitmaps. |
- |
- return encodePixels(IntSize(bitmap.width(), bitmap.height()), static_cast<unsigned char *>(bitmap.getPixels()), true, quality, output); |
-} |
- |
-bool JPEGImageEncoder::encode(const ImageDataBuffer& imageData, int quality, Vector<unsigned char>* output) |
-{ |
- return encodePixels(imageData.size(), imageData.data(), false, quality, output); |
-} |
- |
-} // namespace WebCore |