change SkDraw and all Blitters to use pixmap instead of bitmap

tests/TextureCompressionTest.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkData.h"
 #include "SkEndian.h"
@@ skipping 24 matching lines @@
 
         default:
             return false;
     }
 }
 
 /**
  * Make sure that we properly fail when we don't have multiple of four image dimensions.
  */
 DEF_TEST(CompressAlphaFailDimensions, reporter) {
-    SkBitmap bitmap;
     static const int kWidth = 17;
     static const int kHeight = 17;
-    SkImageInfo info = SkImageInfo::MakeA8(kWidth, kHeight);
 
     // R11_EAC and LATC are both dimensions of 4, so we need to make sure that we
     // are violating those assumptions. And if we are, then we're also violating the
     // assumptions of ASTC, which is 12x12 since any number not divisible by 4 is
     // also not divisible by 12. Our dimensions are prime, so any block dimension
     // larger than 1 should fail.
     REPORTER_ASSERT(reporter, kWidth % 4 != 0);
     REPORTER_ASSERT(reporter, kHeight % 4 != 0);
 
-    bool setInfoSuccess = bitmap.setInfo(info);
-    REPORTER_ASSERT(reporter, setInfoSuccess);
-
-    bitmap.allocPixels(info);
-    bitmap.unlockPixels();
+    SkAutoPixmapStorage pixmap;
+    pixmap.alloc(SkImageInfo::MakeA8(kWidth, kHeight));
+    // leaving the pixels uninitialized, as they don't affect the test...
     
     for (int i = 0; i < SkTextureCompressor::kFormatCnt; ++i) {
         const SkTextureCompressor::Format fmt = static_cast<SkTextureCompressor::Format>(i);
         if (!compresses_a8(fmt)) {
             continue;
         }
-        SkAutoDataUnref data(SkTextureCompressor::CompressBitmapToFormat(bitmap, fmt));
+        SkAutoDataUnref data(SkTextureCompressor::CompressBitmapToFormat(pixmap, fmt));
         REPORTER_ASSERT(reporter, NULL == data);
     }
 }
 
 /**
  * Make sure that we properly fail when we don't have the correct bitmap type.
  * compressed textures can (currently) only be created from A8 bitmaps.
  */
 DEF_TEST(CompressAlphaFailColorType, reporter) {
-    SkBitmap bitmap;
     static const int kWidth = 12;
     static const int kHeight = 12;
-    SkImageInfo info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
 
     // ASTC is at most 12x12, and any dimension divisible by 12 is also divisible
     // by 4, which is the dimensions of R11_EAC and LATC. In the future, we might
     // support additional variants of ASTC, such as 5x6 and 8x8, in which case this would
     // need to be updated.
     REPORTER_ASSERT(reporter, kWidth % 12 == 0);
     REPORTER_ASSERT(reporter, kHeight % 12 == 0);
 
-    bool setInfoSuccess = bitmap.setInfo(info);
-    REPORTER_ASSERT(reporter, setInfoSuccess);
-
-    bitmap.allocPixels(info);
-    bitmap.unlockPixels();
+    SkAutoPixmapStorage pixmap;
+    pixmap.alloc(SkImageInfo::MakeN32Premul(kWidth, kHeight));
+    // leaving the pixels uninitialized, as they don't affect the test...
 
     for (int i = 0; i < SkTextureCompressor::kFormatCnt; ++i) {
         const SkTextureCompressor::Format fmt = static_cast<SkTextureCompressor::Format>(i);
         if (!compresses_a8(fmt)) {
             continue;
         }
-        SkAutoDataUnref data(SkTextureCompressor::CompressBitmapToFormat(bitmap, fmt));
+        SkAutoDataUnref data(SkTextureCompressor::CompressBitmapToFormat(pixmap, fmt));
         REPORTER_ASSERT(reporter, NULL == data);
     }
 }
 
 /**
  * Make sure that if you compress a texture with alternating black/white pixels, and
  * then decompress it, you get what you started with.
  */
 DEF_TEST(CompressCheckerboard, reporter) {
-    SkBitmap bitmap;
     static const int kWidth = 48;  // We need the number to be divisible by both
     static const int kHeight = 48; // 12 (ASTC) and 16 (ARM NEON R11 EAC).
-    SkImageInfo info = SkImageInfo::MakeA8(kWidth, kHeight);
 
     // ASTC is at most 12x12, and any dimension divisible by 12 is also divisible
     // by 4, which is the dimensions of R11_EAC and LATC. In the future, we might
     // support additional variants of ASTC, such as 5x6 and 8x8, in which case this would
     // need to be updated. Additionally, ARM NEON and SSE code paths support up to
     // four blocks of R11 EAC at once, so they operate on 16-wide blocks. Hence, the
     // valid width and height is going to be the LCM of 12 and 16 which is 4*4*3 = 48
     REPORTER_ASSERT(reporter, kWidth % 48 == 0);
     REPORTER_ASSERT(reporter, kHeight % 48 == 0);
 
-    bool setInfoSuccess = bitmap.setInfo(info);
-    REPORTER_ASSERT(reporter, setInfoSuccess);
+    SkAutoPixmapStorage pixmap;
+    pixmap.alloc(SkImageInfo::MakeA8(kWidth, kHeight));
 
-    bitmap.allocPixels(info);
-    bitmap.unlockPixels();
-
-    // Populate bitmap
+    // Populate the pixels
     {
-        SkAutoLockPixels alp(bitmap);
-
-        uint8_t* pixels = reinterpret_cast<uint8_t*>(bitmap.getPixels());
+        uint8_t* pixels = reinterpret_cast<uint8_t*>(pixmap.writable_addr());
         REPORTER_ASSERT(reporter, pixels);
         if (NULL == pixels) {
             return;
         }
 
         for (int y = 0; y < kHeight; ++y) {
             for (int x = 0; x < kWidth; ++x) {
                 if ((x ^ y) & 1) {
                     pixels[x] = 0xFF;
                 } else {
                     pixels[x] = 0;
                 }
             }
-            pixels += bitmap.rowBytes();
+            pixels += pixmap.rowBytes();
         }
     }
 
     SkAutoMalloc decompMemory(kWidth*kHeight);
     uint8_t* decompBuffer = reinterpret_cast<uint8_t*>(decompMemory.get());
     REPORTER_ASSERT(reporter, decompBuffer);
     if (NULL == decompBuffer) {
         return;
     }
 
     for (int i = 0; i < SkTextureCompressor::kFormatCnt; ++i) {
         const SkTextureCompressor::Format fmt = static_cast<SkTextureCompressor::Format>(i);
 
         // Ignore formats for RGBA data, since the decompressed buffer
         // won't match the size and contents of the original.
         if (!decompresses_a8(fmt) || !compresses_a8(fmt)) {
             continue;
         }
 
-        SkAutoDataUnref data(SkTextureCompressor::CompressBitmapToFormat(bitmap, fmt));
+        SkAutoDataUnref data(SkTextureCompressor::CompressBitmapToFormat(pixmap, fmt));
         REPORTER_ASSERT(reporter, data);
         if (NULL == data) {
             continue;
         }
 
         bool decompResult =
             SkTextureCompressor::DecompressBufferFromFormat(
                 decompBuffer, kWidth,
                 data->bytes(),
                 kWidth, kHeight, fmt);
         REPORTER_ASSERT(reporter, decompResult);
 
-        SkAutoLockPixels alp(bitmap);
-        uint8_t* pixels = reinterpret_cast<uint8_t*>(bitmap.getPixels());
+        const uint8_t* pixels = reinterpret_cast<const uint8_t*>(pixmap.addr());
         REPORTER_ASSERT(reporter, pixels);
         if (NULL == pixels) {
             continue;
         }
 
         for (int y = 0; y < kHeight; ++y) {
             for (int x = 0; x < kWidth; ++x) {
-                bool ok = pixels[y*bitmap.rowBytes() + x] == decompBuffer[y*kWidth + x];
+                bool ok = pixels[y*pixmap.rowBytes() + x] == decompBuffer[y*kWidth + x];
                 REPORTER_ASSERT(reporter, ok);
             }
         }
     }
 }
 
 /**
  * Make sure that if we pass in a solid color bitmap that we get the appropriate results
  */
 DEF_TEST(CompressLATC, reporter) {
 
     const SkTextureCompressor::Format kLATCFormat = SkTextureCompressor::kLATC_Format;
     static const int kLATCEncodedBlockSize = 8;
 
-    SkBitmap bitmap;
     static const int kWidth = 8;
     static const int kHeight = 8;
-    SkImageInfo info = SkImageInfo::MakeA8(kWidth, kHeight);
 
-    bool setInfoSuccess = bitmap.setInfo(info);
-    REPORTER_ASSERT(reporter, setInfoSuccess);
-
-    bitmap.allocPixels(info);
-    bitmap.unlockPixels();
+    SkAutoPixmapStorage pixmap;
+    pixmap.alloc(SkImageInfo::MakeA8(kWidth, kHeight));
 
     int latcDimX, latcDimY;
     SkTextureCompressor::GetBlockDimensions(kLATCFormat, &latcDimX, &latcDimY);
 
     REPORTER_ASSERT(reporter, kWidth % latcDimX == 0);
     REPORTER_ASSERT(reporter, kHeight % latcDimY == 0);
     const size_t kSizeToBe =
         SkTextureCompressor::GetCompressedDataSize(kLATCFormat, kWidth, kHeight);
     REPORTER_ASSERT(reporter, kSizeToBe == ((kWidth*kHeight*kLATCEncodedBlockSize)/16));
     REPORTER_ASSERT(reporter, (kSizeToBe % kLATCEncodedBlockSize) == 0);
 
     for (int lum = 0; lum < 256; ++lum) {
-        bitmap.lockPixels();
-        uint8_t* pixels = reinterpret_cast<uint8_t*>(bitmap.getPixels());
-        REPORTER_ASSERT(reporter, pixels);
-        if (NULL == pixels) {
-            bitmap.unlockPixels();
-            continue;
-        }
-
+        uint8_t* pixels = reinterpret_cast<uint8_t*>(pixmap.writable_addr());
         for (int i = 0; i < kWidth*kHeight; ++i) {
             pixels[i] = lum;
         }
-        bitmap.unlockPixels();
 
         SkAutoDataUnref latcData(
-            SkTextureCompressor::CompressBitmapToFormat(bitmap, kLATCFormat));
+            SkTextureCompressor::CompressBitmapToFormat(pixmap, kLATCFormat));
         REPORTER_ASSERT(reporter, latcData);
         if (NULL == latcData) {
             continue;
         }
 
         REPORTER_ASSERT(reporter, kSizeToBe == latcData->size());
 
         // Make sure that it all matches a given block encoding. Since we have
         // COMPRESS_LATC_FAST defined in SkTextureCompressor_LATC.cpp, we are using
         // an approximation scheme that optimizes for speed against coverage maps.
@@ skipping 41 matching lines @@
                 (kIndex << 28) | (kIndex << 31) | (kIndex << 34) | (kIndex << 37) |
                 (kIndex << 40) | (kIndex << 43) | (kIndex << 46) | (kIndex << 49) |
                 (kIndex << 52) | (kIndex << 55) | (kIndex << 58) | (kIndex << 61));
 
         const uint64_t* blockPtr = reinterpret_cast<const uint64_t*>(latcData->data());
         for (size_t i = 0; i < (kSizeToBe/8); ++i) {
             REPORTER_ASSERT(reporter, blockPtr[i] == kConstColorEncoding);
         }
     }
 }