1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/core/SkPicture.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,451 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2007 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 +#include "SkPictureFlat.h"
1.14 +#include "SkPicturePlayback.h"
1.15 +#include "SkPictureRecord.h"
1.16 +
1.17 +#include "SkBitmapDevice.h"
1.18 +#include "SkCanvas.h"
1.19 +#include "SkChunkAlloc.h"
1.20 +#include "SkPicture.h"
1.21 +#include "SkRegion.h"
1.22 +#include "SkStream.h"
1.23 +#include "SkTDArray.h"
1.24 +#include "SkTSearch.h"
1.25 +#include "SkTime.h"
1.26 +
1.27 +#include "SkReader32.h"
1.28 +#include "SkWriter32.h"
1.29 +#include "SkRTree.h"
1.30 +#include "SkBBoxHierarchyRecord.h"
1.31 +
1.32 +#define DUMP_BUFFER_SIZE 65536
1.33 +
1.34 +//#define ENABLE_TIME_DRAW // dumps milliseconds for each draw
1.35 +
1.36 +
1.37 +#ifdef SK_DEBUG
1.38 +// enable SK_DEBUG_TRACE to trace DrawType elements when
1.39 +// recorded and played back
1.40 +// #define SK_DEBUG_TRACE
1.41 +// enable SK_DEBUG_SIZE to see the size of picture components
1.42 +// #define SK_DEBUG_SIZE
1.43 +// enable SK_DEBUG_DUMP to see the contents of recorded elements
1.44 +// #define SK_DEBUG_DUMP
1.45 +// enable SK_DEBUG_VALIDATE to check internal structures for consistency
1.46 +// #define SK_DEBUG_VALIDATE
1.47 +#endif
1.48 +
1.49 +#if defined SK_DEBUG_TRACE || defined SK_DEBUG_DUMP
1.50 +const char* DrawTypeToString(DrawType drawType) {
1.51 + switch (drawType) {
1.52 + case UNUSED: SkDebugf("DrawType UNUSED\n"); SkASSERT(0); break;
1.53 + case CLIP_PATH: return "CLIP_PATH";
1.54 + case CLIP_REGION: return "CLIP_REGION";
1.55 + case CLIP_RECT: return "CLIP_RECT";
1.56 + case CLIP_RRECT: return "CLIP_RRECT";
1.57 + case CONCAT: return "CONCAT";
1.58 + case DRAW_BITMAP: return "DRAW_BITMAP";
1.59 + case DRAW_BITMAP_MATRIX: return "DRAW_BITMAP_MATRIX";
1.60 + case DRAW_BITMAP_NINE: return "DRAW_BITMAP_NINE";
1.61 + case DRAW_BITMAP_RECT_TO_RECT: return "DRAW_BITMAP_RECT_TO_RECT";
1.62 + case DRAW_CLEAR: return "DRAW_CLEAR";
1.63 + case DRAW_DATA: return "DRAW_DATA";
1.64 + case DRAW_OVAL: return "DRAW_OVAL";
1.65 + case DRAW_PAINT: return "DRAW_PAINT";
1.66 + case DRAW_PATH: return "DRAW_PATH";
1.67 + case DRAW_PICTURE: return "DRAW_PICTURE";
1.68 + case DRAW_POINTS: return "DRAW_POINTS";
1.69 + case DRAW_POS_TEXT: return "DRAW_POS_TEXT";
1.70 + case DRAW_POS_TEXT_TOP_BOTTOM: return "DRAW_POS_TEXT_TOP_BOTTOM";
1.71 + case DRAW_POS_TEXT_H: return "DRAW_POS_TEXT_H";
1.72 + case DRAW_POS_TEXT_H_TOP_BOTTOM: return "DRAW_POS_TEXT_H_TOP_BOTTOM";
1.73 + case DRAW_RECT: return "DRAW_RECT";
1.74 + case DRAW_RRECT: return "DRAW_RRECT";
1.75 + case DRAW_SPRITE: return "DRAW_SPRITE";
1.76 + case DRAW_TEXT: return "DRAW_TEXT";
1.77 + case DRAW_TEXT_ON_PATH: return "DRAW_TEXT_ON_PATH";
1.78 + case DRAW_TEXT_TOP_BOTTOM: return "DRAW_TEXT_TOP_BOTTOM";
1.79 + case DRAW_VERTICES: return "DRAW_VERTICES";
1.80 + case RESTORE: return "RESTORE";
1.81 + case ROTATE: return "ROTATE";
1.82 + case SAVE: return "SAVE";
1.83 + case SAVE_LAYER: return "SAVE_LAYER";
1.84 + case SCALE: return "SCALE";
1.85 + case SET_MATRIX: return "SET_MATRIX";
1.86 + case SKEW: return "SKEW";
1.87 + case TRANSLATE: return "TRANSLATE";
1.88 + case NOOP: return "NOOP";
1.89 + default:
1.90 + SkDebugf("DrawType error 0x%08x\n", drawType);
1.91 + SkASSERT(0);
1.92 + break;
1.93 + }
1.94 + SkASSERT(0);
1.95 + return NULL;
1.96 +}
1.97 +#endif
1.98 +
1.99 +#ifdef SK_DEBUG_VALIDATE
1.100 +static void validateMatrix(const SkMatrix* matrix) {
1.101 + SkScalar scaleX = matrix->getScaleX();
1.102 + SkScalar scaleY = matrix->getScaleY();
1.103 + SkScalar skewX = matrix->getSkewX();
1.104 + SkScalar skewY = matrix->getSkewY();
1.105 + SkScalar perspX = matrix->getPerspX();
1.106 + SkScalar perspY = matrix->getPerspY();
1.107 + if (scaleX != 0 && skewX != 0)
1.108 + SkDebugf("scaleX != 0 && skewX != 0\n");
1.109 + SkASSERT(scaleX == 0 || skewX == 0);
1.110 + SkASSERT(scaleY == 0 || skewY == 0);
1.111 + SkASSERT(perspX == 0);
1.112 + SkASSERT(perspY == 0);
1.113 +}
1.114 +#endif
1.115 +
1.116 +
1.117 +///////////////////////////////////////////////////////////////////////////////
1.118 +
1.119 +SkPicture::SkPicture() {
1.120 + fRecord = NULL;
1.121 + fPlayback = NULL;
1.122 + fWidth = fHeight = 0;
1.123 + fAccelData = NULL;
1.124 +}
1.125 +
1.126 +SkPicture::SkPicture(const SkPicture& src)
1.127 + : INHERITED()
1.128 + , fAccelData(NULL) {
1.129 + fWidth = src.fWidth;
1.130 + fHeight = src.fHeight;
1.131 + fRecord = NULL;
1.132 +
1.133 + /* We want to copy the src's playback. However, if that hasn't been built
1.134 + yet, we need to fake a call to endRecording() without actually calling
1.135 + it (since it is destructive, and we don't want to change src).
1.136 + */
1.137 + if (src.fPlayback) {
1.138 + fPlayback = SkNEW_ARGS(SkPicturePlayback, (*src.fPlayback));
1.139 + } else if (src.fRecord) {
1.140 + // here we do a fake src.endRecording()
1.141 + fPlayback = SkNEW_ARGS(SkPicturePlayback, (*src.fRecord));
1.142 + } else {
1.143 + fPlayback = NULL;
1.144 + }
1.145 +}
1.146 +
1.147 +SkPicture::~SkPicture() {
1.148 + SkSafeUnref(fRecord);
1.149 + SkDELETE(fPlayback);
1.150 + SkSafeUnref(fAccelData);
1.151 +}
1.152 +
1.153 +void SkPicture::internalOnly_EnableOpts(bool enableOpts) {
1.154 + if (NULL != fRecord) {
1.155 + fRecord->internalOnly_EnableOpts(enableOpts);
1.156 + }
1.157 +}
1.158 +
1.159 +void SkPicture::swap(SkPicture& other) {
1.160 + SkTSwap(fRecord, other.fRecord);
1.161 + SkTSwap(fPlayback, other.fPlayback);
1.162 + SkTSwap(fAccelData, other.fAccelData);
1.163 + SkTSwap(fWidth, other.fWidth);
1.164 + SkTSwap(fHeight, other.fHeight);
1.165 +}
1.166 +
1.167 +SkPicture* SkPicture::clone() const {
1.168 + SkPicture* clonedPicture = SkNEW(SkPicture);
1.169 + clone(clonedPicture, 1);
1.170 + return clonedPicture;
1.171 +}
1.172 +
1.173 +void SkPicture::clone(SkPicture* pictures, int count) const {
1.174 + SkPictCopyInfo copyInfo;
1.175 +
1.176 + for (int i = 0; i < count; i++) {
1.177 + SkPicture* clone = &pictures[i];
1.178 +
1.179 + clone->fWidth = fWidth;
1.180 + clone->fHeight = fHeight;
1.181 + SkSafeSetNull(clone->fRecord);
1.182 + SkDELETE(clone->fPlayback);
1.183 +
1.184 + /* We want to copy the src's playback. However, if that hasn't been built
1.185 + yet, we need to fake a call to endRecording() without actually calling
1.186 + it (since it is destructive, and we don't want to change src).
1.187 + */
1.188 + if (fPlayback) {
1.189 + clone->fPlayback = SkNEW_ARGS(SkPicturePlayback, (*fPlayback, ©Info));
1.190 + } else if (fRecord) {
1.191 + // here we do a fake src.endRecording()
1.192 + clone->fPlayback = SkNEW_ARGS(SkPicturePlayback, (*fRecord, true));
1.193 + } else {
1.194 + clone->fPlayback = NULL;
1.195 + }
1.196 + }
1.197 +}
1.198 +
1.199 +SkPicture::AccelData::Domain SkPicture::AccelData::GenerateDomain() {
1.200 + static int32_t gNextID = 0;
1.201 +
1.202 + int32_t id = sk_atomic_inc(&gNextID);
1.203 + if (id >= 1 << (8 * sizeof(Domain))) {
1.204 + SK_CRASH();
1.205 + }
1.206 +
1.207 + return static_cast<Domain>(id);
1.208 +}
1.209 +
1.210 +///////////////////////////////////////////////////////////////////////////////
1.211 +
1.212 +SkCanvas* SkPicture::beginRecording(int width, int height,
1.213 + uint32_t recordingFlags) {
1.214 + if (fPlayback) {
1.215 + SkDELETE(fPlayback);
1.216 + fPlayback = NULL;
1.217 + }
1.218 + SkSafeUnref(fAccelData);
1.219 + SkSafeSetNull(fRecord);
1.220 +
1.221 + // Must be set before calling createBBoxHierarchy
1.222 + fWidth = width;
1.223 + fHeight = height;
1.224 +
1.225 + const SkISize size = SkISize::Make(width, height);
1.226 +
1.227 + if (recordingFlags & kOptimizeForClippedPlayback_RecordingFlag) {
1.228 + SkBBoxHierarchy* tree = this->createBBoxHierarchy();
1.229 + SkASSERT(NULL != tree);
1.230 + fRecord = SkNEW_ARGS(SkBBoxHierarchyRecord, (size, recordingFlags, tree));
1.231 + tree->unref();
1.232 + } else {
1.233 + fRecord = SkNEW_ARGS(SkPictureRecord, (size, recordingFlags));
1.234 + }
1.235 + fRecord->beginRecording();
1.236 +
1.237 + return fRecord;
1.238 +}
1.239 +
1.240 +SkBBoxHierarchy* SkPicture::createBBoxHierarchy() const {
1.241 + // These values were empirically determined to produce reasonable
1.242 + // performance in most cases.
1.243 + static const int kRTreeMinChildren = 6;
1.244 + static const int kRTreeMaxChildren = 11;
1.245 +
1.246 + SkScalar aspectRatio = SkScalarDiv(SkIntToScalar(fWidth),
1.247 + SkIntToScalar(fHeight));
1.248 + bool sortDraws = false; // Do not sort draw calls when bulk loading.
1.249 +
1.250 + return SkRTree::Create(kRTreeMinChildren, kRTreeMaxChildren,
1.251 + aspectRatio, sortDraws);
1.252 +}
1.253 +
1.254 +SkCanvas* SkPicture::getRecordingCanvas() const {
1.255 + // will be null if we are not recording
1.256 + return fRecord;
1.257 +}
1.258 +
1.259 +void SkPicture::endRecording() {
1.260 + if (NULL == fPlayback) {
1.261 + if (NULL != fRecord) {
1.262 + fRecord->endRecording();
1.263 + fPlayback = SkNEW_ARGS(SkPicturePlayback, (*fRecord));
1.264 + SkSafeSetNull(fRecord);
1.265 + }
1.266 + }
1.267 + SkASSERT(NULL == fRecord);
1.268 +}
1.269 +
1.270 +void SkPicture::draw(SkCanvas* surface, SkDrawPictureCallback* callback) {
1.271 + this->endRecording();
1.272 + if (NULL != fPlayback) {
1.273 + fPlayback->draw(*surface, callback);
1.274 + }
1.275 +}
1.276 +
1.277 +///////////////////////////////////////////////////////////////////////////////
1.278 +
1.279 +#include "SkStream.h"
1.280 +
1.281 +static const char kMagic[] = { 's', 'k', 'i', 'a', 'p', 'i', 'c', 't' };
1.282 +
1.283 +bool SkPicture::IsValidPictInfo(const SkPictInfo& info) {
1.284 + if (0 != memcmp(info.fMagic, kMagic, sizeof(kMagic))) {
1.285 + return false;
1.286 + }
1.287 +
1.288 + if (info.fVersion < MIN_PICTURE_VERSION ||
1.289 + info.fVersion > CURRENT_PICTURE_VERSION) {
1.290 + return false;
1.291 + }
1.292 +
1.293 + return true;
1.294 +}
1.295 +
1.296 +bool SkPicture::InternalOnly_StreamIsSKP(SkStream* stream, SkPictInfo* pInfo) {
1.297 + if (NULL == stream) {
1.298 + return false;
1.299 + }
1.300 +
1.301 + // Check magic bytes.
1.302 + SkPictInfo info;
1.303 + SkASSERT(sizeof(kMagic) == sizeof(info.fMagic));
1.304 + if (!stream->read(&info, sizeof(info)) || !IsValidPictInfo(info)) {
1.305 + return false;
1.306 + }
1.307 +
1.308 + if (pInfo != NULL) {
1.309 + *pInfo = info;
1.310 + }
1.311 + return true;
1.312 +}
1.313 +
1.314 +bool SkPicture::InternalOnly_BufferIsSKP(SkReadBuffer& buffer, SkPictInfo* pInfo) {
1.315 + // Check magic bytes.
1.316 + SkPictInfo info;
1.317 + SkASSERT(sizeof(kMagic) == sizeof(info.fMagic));
1.318 + if (!buffer.readByteArray(&info, sizeof(info)) || !IsValidPictInfo(info)) {
1.319 + return false;
1.320 + }
1.321 +
1.322 + if (pInfo != NULL) {
1.323 + *pInfo = info;
1.324 + }
1.325 + return true;
1.326 +}
1.327 +
1.328 +SkPicture::SkPicture(SkPicturePlayback* playback, int width, int height)
1.329 + : fPlayback(playback)
1.330 + , fRecord(NULL)
1.331 + , fWidth(width)
1.332 + , fHeight(height)
1.333 + , fAccelData(NULL) {}
1.334 +
1.335 +SkPicture* SkPicture::CreateFromStream(SkStream* stream, InstallPixelRefProc proc) {
1.336 + SkPictInfo info;
1.337 +
1.338 + if (!InternalOnly_StreamIsSKP(stream, &info)) {
1.339 + return NULL;
1.340 + }
1.341 +
1.342 + SkPicturePlayback* playback;
1.343 + // Check to see if there is a playback to recreate.
1.344 + if (stream->readBool()) {
1.345 + playback = SkPicturePlayback::CreateFromStream(stream, info, proc);
1.346 + if (NULL == playback) {
1.347 + return NULL;
1.348 + }
1.349 + } else {
1.350 + playback = NULL;
1.351 + }
1.352 +
1.353 + return SkNEW_ARGS(SkPicture, (playback, info.fWidth, info.fHeight));
1.354 +}
1.355 +
1.356 +SkPicture* SkPicture::CreateFromBuffer(SkReadBuffer& buffer) {
1.357 + SkPictInfo info;
1.358 +
1.359 + if (!InternalOnly_BufferIsSKP(buffer, &info)) {
1.360 + return NULL;
1.361 + }
1.362 +
1.363 + SkPicturePlayback* playback;
1.364 + // Check to see if there is a playback to recreate.
1.365 + if (buffer.readBool()) {
1.366 + playback = SkPicturePlayback::CreateFromBuffer(buffer);
1.367 + if (NULL == playback) {
1.368 + return NULL;
1.369 + }
1.370 + } else {
1.371 + playback = NULL;
1.372 + }
1.373 +
1.374 + return SkNEW_ARGS(SkPicture, (playback, info.fWidth, info.fHeight));
1.375 +}
1.376 +
1.377 +void SkPicture::createHeader(SkPictInfo* info) const {
1.378 + // Copy magic bytes at the beginning of the header
1.379 + SkASSERT(sizeof(kMagic) == 8);
1.380 + SkASSERT(sizeof(kMagic) == sizeof(info->fMagic));
1.381 + memcpy(info->fMagic, kMagic, sizeof(kMagic));
1.382 +
1.383 + // Set picture info after magic bytes in the header
1.384 + info->fVersion = CURRENT_PICTURE_VERSION;
1.385 + info->fWidth = fWidth;
1.386 + info->fHeight = fHeight;
1.387 + info->fFlags = SkPictInfo::kCrossProcess_Flag;
1.388 + // TODO: remove this flag, since we're always float (now)
1.389 + info->fFlags |= SkPictInfo::kScalarIsFloat_Flag;
1.390 +
1.391 + if (8 == sizeof(void*)) {
1.392 + info->fFlags |= SkPictInfo::kPtrIs64Bit_Flag;
1.393 + }
1.394 +}
1.395 +
1.396 +void SkPicture::serialize(SkWStream* stream, EncodeBitmap encoder) const {
1.397 + SkPicturePlayback* playback = fPlayback;
1.398 +
1.399 + if (NULL == playback && fRecord) {
1.400 + playback = SkNEW_ARGS(SkPicturePlayback, (*fRecord));
1.401 + }
1.402 +
1.403 + SkPictInfo header;
1.404 + this->createHeader(&header);
1.405 + stream->write(&header, sizeof(header));
1.406 + if (playback) {
1.407 + stream->writeBool(true);
1.408 + playback->serialize(stream, encoder);
1.409 + // delete playback if it is a local version (i.e. cons'd up just now)
1.410 + if (playback != fPlayback) {
1.411 + SkDELETE(playback);
1.412 + }
1.413 + } else {
1.414 + stream->writeBool(false);
1.415 + }
1.416 +}
1.417 +
1.418 +void SkPicture::flatten(SkWriteBuffer& buffer) const {
1.419 + SkPicturePlayback* playback = fPlayback;
1.420 +
1.421 + if (NULL == playback && fRecord) {
1.422 + playback = SkNEW_ARGS(SkPicturePlayback, (*fRecord));
1.423 + }
1.424 +
1.425 + SkPictInfo header;
1.426 + this->createHeader(&header);
1.427 + buffer.writeByteArray(&header, sizeof(header));
1.428 + if (playback) {
1.429 + buffer.writeBool(true);
1.430 + playback->flatten(buffer);
1.431 + // delete playback if it is a local version (i.e. cons'd up just now)
1.432 + if (playback != fPlayback) {
1.433 + SkDELETE(playback);
1.434 + }
1.435 + } else {
1.436 + buffer.writeBool(false);
1.437 + }
1.438 +}
1.439 +
1.440 +bool SkPicture::willPlayBackBitmaps() const {
1.441 + if (!fPlayback) {
1.442 + return false;
1.443 + }
1.444 + return fPlayback->containsBitmaps();
1.445 +}
1.446 +
1.447 +#ifdef SK_BUILD_FOR_ANDROID
1.448 +void SkPicture::abortPlayback() {
1.449 + if (NULL == fPlayback) {
1.450 + return;
1.451 + }
1.452 + fPlayback->abort();
1.453 +}
1.454 +#endif
