1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/images/SkJpegUtility.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,66 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2010 The Android Open Source Project
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +
1.13 +#ifndef SkJpegUtility_DEFINED
1.14 +#define SkJpegUtility_DEFINED
1.15 +
1.16 +#include "SkImageDecoder.h"
1.17 +#include "SkStream.h"
1.18 +
1.19 +extern "C" {
1.20 + #include "jpeglib.h"
1.21 + #include "jerror.h"
1.22 +}
1.23 +
1.24 +#include <setjmp.h>
1.25 +
1.26 +/* Our error-handling struct.
1.27 + *
1.28 +*/
1.29 +struct skjpeg_error_mgr : jpeg_error_mgr {
1.30 + jmp_buf fJmpBuf;
1.31 +};
1.32 +
1.33 +
1.34 +void skjpeg_error_exit(j_common_ptr cinfo);
1.35 +
1.36 +///////////////////////////////////////////////////////////////////////////
1.37 +/* Our source struct for directing jpeg to our stream object.
1.38 +*/
1.39 +struct skjpeg_source_mgr : jpeg_source_mgr {
1.40 + skjpeg_source_mgr(SkStream* stream, SkImageDecoder* decoder);
1.41 + ~skjpeg_source_mgr();
1.42 +
1.43 + // fStream is ref'ed and unref'ed
1.44 + SkStream* fStream;
1.45 + // Unowned pointer to the decoder, used to check if the decoding process
1.46 + // has been cancelled.
1.47 + SkImageDecoder* fDecoder;
1.48 + enum {
1.49 + kBufferSize = 1024
1.50 + };
1.51 + char fBuffer[kBufferSize];
1.52 +};
1.53 +
1.54 +/////////////////////////////////////////////////////////////////////////////
1.55 +/* Our destination struct for directing decompressed pixels to our stream
1.56 + * object.
1.57 + */
1.58 +struct skjpeg_destination_mgr : jpeg_destination_mgr {
1.59 + skjpeg_destination_mgr(SkWStream* stream);
1.60 +
1.61 + SkWStream* fStream;
1.62 +
1.63 + enum {
1.64 + kBufferSize = 1024
1.65 + };
1.66 + uint8_t fBuffer[kBufferSize];
1.67 +};
1.68 +
1.69 +#endif
