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Side by Side Diff: include/core/SkImageDecoder.h

Issue 656163002: Revert of JPEG YUV Decoding (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Created 6 years, 2 months ago
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1 /* 1 /*
2 * Copyright 2006 The Android Open Source Project 2 * Copyright 2006 The Android Open Source Project
3 * 3 *
4 * Use of this source code is governed by a BSD-style license that can be 4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file. 5 * found in the LICENSE file.
6 */ 6 */
7 7
8 #ifndef SkImageDecoder_DEFINED 8 #ifndef SkImageDecoder_DEFINED
9 #define SkImageDecoder_DEFINED 9 #define SkImageDecoder_DEFINED
10 10
(...skipping 29 matching lines...) Expand all
40 kASTC_Format, 40 kASTC_Format,
41 41
42 kLastKnownFormat = kKTX_Format, 42 kLastKnownFormat = kKTX_Format,
43 }; 43 };
44 44
45 /** Return the format of image this decoder can decode. If this decoder can decode multiple 45 /** Return the format of image this decoder can decode. If this decoder can decode multiple
46 formats, kUnknown_Format will be returned. 46 formats, kUnknown_Format will be returned.
47 */ 47 */
48 virtual Format getFormat() const; 48 virtual Format getFormat() const;
49 49
50 /** If planes or rowBytes is NULL, decodes the header and computes component Sizes
51 for memory allocation.
52 Otherwise, decodes the YUV planes into the provided image planes and
53 updates componentSizes to the final image size.
54 Returns whether the decoding was successful.
55 */
56 bool decodeYUV8Planes(SkStream* stream, SkISize componentSizes[3], void* pla nes[3],
57 size_t rowBytes[3], SkYUVColorSpace*);
58
59 /** Return the format of the SkStreamRewindable or kUnknown_Format if it can not be determined. 50 /** Return the format of the SkStreamRewindable or kUnknown_Format if it can not be determined.
60 Rewinds the stream before returning. 51 Rewinds the stream before returning.
61 */ 52 */
62 static Format GetStreamFormat(SkStreamRewindable*); 53 static Format GetStreamFormat(SkStreamRewindable*);
63 54
64 /** Return a readable string of the Format provided. 55 /** Return a readable string of the Format provided.
65 */ 56 */
66 static const char* GetFormatName(Format); 57 static const char* GetFormatName(Format);
67 58
68 /** Return a readable string of the value returned by getFormat(). 59 /** Return a readable string of the value returned by getFormat().
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341 virtual bool onBuildTileIndex(SkStreamRewindable*, int *width, int *height) { 332 virtual bool onBuildTileIndex(SkStreamRewindable*, int *width, int *height) {
342 return false; 333 return false;
343 } 334 }
344 335
345 // If the decoder wants to support tiled based decoding, 336 // If the decoder wants to support tiled based decoding,
346 // this method must be overridden. This guy is called by decodeRegion(...) 337 // this method must be overridden. This guy is called by decodeRegion(...)
347 virtual bool onDecodeSubset(SkBitmap* bitmap, const SkIRect& rect) { 338 virtual bool onDecodeSubset(SkBitmap* bitmap, const SkIRect& rect) {
348 return false; 339 return false;
349 } 340 }
350 341
351 /** If planes or rowBytes is NULL, decodes the header and computes component Sizes
352 for memory allocation.
353 Otherwise, decodes the YUV planes into the provided image planes and
354 updates componentSizes to the final image size.
355 Returns whether the decoding was successful.
356 */
357 virtual bool onDecodeYUV8Planes(SkStream* stream, SkISize componentSizes[3], void* planes[3],
358 size_t rowBytes[3], SkYUVColorSpace*) {
359 return false;
360 }
361
362 /* 342 /*
363 * Crop a rectangle from the src Bitmap to the dest Bitmap. src and dst are 343 * Crop a rectangle from the src Bitmap to the dest Bitmap. src and dst are
364 * both sampled by sampleSize from an original Bitmap. 344 * both sampled by sampleSize from an original Bitmap.
365 * 345 *
366 * @param dst the destination bitmap. 346 * @param dst the destination bitmap.
367 * @param src the source bitmap that is sampled by sampleSize from the 347 * @param src the source bitmap that is sampled by sampleSize from the
368 * original bitmap. 348 * original bitmap.
369 * @param sampleSize the sample size that src is sampled from the original b itmap. 349 * @param sampleSize the sample size that src is sampled from the original b itmap.
370 * @param (dstX, dstY) the upper-left point of the dest bitmap in terms of 350 * @param (dstX, dstY) the upper-left point of the dest bitmap in terms of
371 * the coordinate in the original bitmap. 351 * the coordinate in the original bitmap.
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497 DECLARE_DECODER_CREATOR(PKMImageDecoder); 477 DECLARE_DECODER_CREATOR(PKMImageDecoder);
498 DECLARE_DECODER_CREATOR(KTXImageDecoder); 478 DECLARE_DECODER_CREATOR(KTXImageDecoder);
499 DECLARE_DECODER_CREATOR(ASTCImageDecoder); 479 DECLARE_DECODER_CREATOR(ASTCImageDecoder);
500 480
501 // Typedefs to make registering decoder and formatter callbacks easier. 481 // Typedefs to make registering decoder and formatter callbacks easier.
502 // These have to be defined outside SkImageDecoder. :( 482 // These have to be defined outside SkImageDecoder. :(
503 typedef SkTRegistry<SkImageDecoder*(*)(SkStreamRewindable*)> SkImageDecod er_DecodeReg; 483 typedef SkTRegistry<SkImageDecoder*(*)(SkStreamRewindable*)> SkImageDecod er_DecodeReg;
504 typedef SkTRegistry<SkImageDecoder::Format(*)(SkStreamRewindable*)> SkImageDecod er_FormatReg; 484 typedef SkTRegistry<SkImageDecoder::Format(*)(SkStreamRewindable*)> SkImageDecod er_FormatReg;
505 485
506 #endif 486 #endif
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