diff options
| -rw-r--r-- | public.bzl | 3 | ||||
| -rw-r--r-- | third_party/etc1/LICENSE | 161 | ||||
| -rw-r--r-- | third_party/etc1/README.google | 7 | ||||
| -rw-r--r-- | third_party/etc1/etc1.cpp | 678 | ||||
| -rw-r--r-- | third_party/etc1/etc1.h | 114 | ||||
| -rwxr-xr-x | tools/check-headers-self-sufficient | 1 |
6 files changed, 0 insertions, 964 deletions
diff --git a/public.bzl b/public.bzl index 4eaecf8f78..d039497558 100644 --- a/public.bzl +++ b/public.bzl @@ -208,8 +208,6 @@ BASE_SRCS_ALL = struct( "src/jumper/SkJumper_generated.S", # Third Party - "third_party/etc1/*.cpp", - "third_party/etc1/*.h", "third_party/gif/*.cpp", "third_party/gif/*.h", ], @@ -416,7 +414,6 @@ INCLUDES = [ "src/shaders", "src/sksl", "src/utils", - "third_party/etc1", "third_party/gif", ] diff --git a/third_party/etc1/LICENSE b/third_party/etc1/LICENSE deleted file mode 100644 index 64635a4089..0000000000 --- a/third_party/etc1/LICENSE +++ /dev/null @@ -1,161 +0,0 @@ -Apache License - -Version 2.0, January 2004 - -http://www.apache.org/licenses/ - -TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION - -1. Definitions. - -"License" shall mean the terms and conditions for use, reproduction, and -distribution as defined by Sections 1 through 9 of this document. - -"Licensor" shall mean the copyright owner or entity authorized by the -copyright owner that is granting the License. - -"Legal Entity" shall mean the union of the acting entity and all other -entities that control, are controlled by, or are under common control with -that entity. For the purposes of this definition, "control" means (i) the -power, direct or indirect, to cause the direction or management of such -entity, whether by contract or otherwise, or (ii) ownership of fifty -percent (50%) or more of the outstanding shares, or (iii) beneficial -ownership of such entity. - -"You" (or "Your") shall mean an individual or Legal Entity exercising -permissions granted by this License. - -"Source" form shall mean the preferred form for making modifications, -including but not limited to software source code, documentation -source, and configuration files. - -"Object" form shall mean any form resulting from mechanical transformation -or translation of a Source form, including but not limited to compiled -object code, generated documentation, and conversions to other media types. - -"Work" shall mean the work of authorship, whether in Source or Object -form, made available under the License, as indicated by a copyright -notice that is included in or attached to the work (an example is -provided in the Appendix below). - -"Derivative Works" shall mean any work, whether in Source or Object -form, that is based on (or derived from) the Work and for which the -editorial revisions, annotations, elaborations, or other modifications -represent, as a whole, an original work of authorship. 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Subject to the terms and conditions of this -License, each Contributor hereby grants to You a perpetual, worldwide, -non-exclusive, no-charge, royalty-free, irrevocable (except as stated in -this section) patent license to make, have made, use, offer to sell, sell, -import, and otherwise transfer the Work, where such license applies only to -those patent claims licensable by such Contributor that are necessarily -infringed by their Contribution(s) alone or by combination of their -Contribution(s) with the Work to which such Contribution(s) was submitted. -If You institute patent litigation against any entity (including a cross-claim -or counterclaim in a lawsuit) alleging that the Work or a Contribution -incorporated within the Work constitutes direct or contributory patent -infringement, then any patent licenses granted to You under this License -for that Work shall terminate as of the date such litigation is filed. - -4. Redistribution. You may reproduce and distribute copies of the Work or -Derivative Works thereof in any medium, with or without modifications, and -in Source or Object form, provided that You meet the following conditions: - -You must give any other recipients of the Work or Derivative Works a copy of -this License; and -You must cause any modified files to carry prominent notices stating that -You changed the files; and -You must retain, in the Source form of any Derivative Works that You -distribute, all copyright, patent, trademark, and attribution notices -from the Source form of the Work, excluding those notices that do not -pertain to any part of the Derivative Works; and -If the Work includes a "NOTICE" text file as part of its distribution, -then any Derivative Works that You distribute must include a readable -copy of the attribution notices contained within such NOTICE file, excluding -those notices that do not pertain to any part of the Derivative Works, in -at least one of the following places: within a NOTICE text file distributed -as part of the Derivative Works; within the Source form or documentation, if -provided along with the Derivative Works; or, within a display generated by -the Derivative Works, if and wherever such third-party notices normally -appear. 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\ No newline at end of file diff --git a/third_party/etc1/README.google b/third_party/etc1/README.google deleted file mode 100644 index 029c8014b9..0000000000 --- a/third_party/etc1/README.google +++ /dev/null @@ -1,7 +0,0 @@ -URL: https://android.googlesource.com/platform/frameworks/native/+/master/opengl/ -Version: 01cc538b -License: Apache 2.0 -License File: LICENSE -Description: PKM file format (ETC1 data) support -Local Modifications: Created LICENSE file for compliance purposes. Not included in original - distribution. diff --git a/third_party/etc1/etc1.cpp b/third_party/etc1/etc1.cpp deleted file mode 100644 index 421ebfebc5..0000000000 --- a/third_party/etc1/etc1.cpp +++ /dev/null @@ -1,678 +0,0 @@ -// Copyright 2009 Google Inc. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -////////////////////////////////////////////////////////////////////////////////////////// - -// This is a fork of the AOSP project ETC1 codec. The original code can be found -// at the following web site: -// https://android.googlesource.com/platform/frameworks/native/+/master/opengl/include/ETC1/ - -////////////////////////////////////////////////////////////////////////////////////////// - -#include "etc1.h" - -#include <cstring> - -/* From http://www.khronos.org/registry/gles/extensions/OES/OES_compressed_ETC1_RGB8_texture.txt - - The number of bits that represent a 4x4 texel block is 64 bits if - <internalformat> is given by ETC1_RGB8_OES. - - The data for a block is a number of bytes, - - {q0, q1, q2, q3, q4, q5, q6, q7} - - where byte q0 is located at the lowest memory address and q7 at - the highest. The 64 bits specifying the block is then represented - by the following 64 bit integer: - - int64bit = 256*(256*(256*(256*(256*(256*(256*q0+q1)+q2)+q3)+q4)+q5)+q6)+q7; - - ETC1_RGB8_OES: - - a) bit layout in bits 63 through 32 if diffbit = 0 - - 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 - ----------------------------------------------- - | base col1 | base col2 | base col1 | base col2 | - | R1 (4bits)| R2 (4bits)| G1 (4bits)| G2 (4bits)| - ----------------------------------------------- - - 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 - --------------------------------------------------- - | base col1 | base col2 | table | table |diff|flip| - | B1 (4bits)| B2 (4bits)| cw 1 | cw 2 |bit |bit | - --------------------------------------------------- - - - b) bit layout in bits 63 through 32 if diffbit = 1 - - 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 - ----------------------------------------------- - | base col1 | dcol 2 | base col1 | dcol 2 | - | R1' (5 bits) | dR2 | G1' (5 bits) | dG2 | - ----------------------------------------------- - - 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 - --------------------------------------------------- - | base col 1 | dcol 2 | table | table |diff|flip| - | B1' (5 bits) | dB2 | cw 1 | cw 2 |bit |bit | - --------------------------------------------------- - - - c) bit layout in bits 31 through 0 (in both cases) - - 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 - ----------------------------------------------- - | most significant pixel index bits | - | p| o| n| m| l| k| j| i| h| g| f| e| d| c| b| a| - ----------------------------------------------- - - 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 - -------------------------------------------------- - | least significant pixel index bits | - | p| o| n| m| l| k| j| i| h| g| f| e| d| c | b | a | - -------------------------------------------------- - - - Add table 3.17.2: Intensity modifier sets for ETC1 compressed textures: - - table codeword modifier table - ------------------ ---------------------- - 0 -8 -2 2 8 - 1 -17 -5 5 17 - 2 -29 -9 9 29 - 3 -42 -13 13 42 - 4 -60 -18 18 60 - 5 -80 -24 24 80 - 6 -106 -33 33 106 - 7 -183 -47 47 183 - - - Add table 3.17.3 Mapping from pixel index values to modifier values for - ETC1 compressed textures: - - pixel index value - --------------- - msb lsb resulting modifier value - ----- ----- ------------------------- - 1 1 -b (large negative value) - 1 0 -a (small negative value) - 0 0 a (small positive value) - 0 1 b (large positive value) - - - */ - -static const int kModifierTable[] = { -/* 0 */2, 8, -2, -8, -/* 1 */5, 17, -5, -17, -/* 2 */9, 29, -9, -29, -/* 3 */13, 42, -13, -42, -/* 4 */18, 60, -18, -60, -/* 5 */24, 80, -24, -80, -/* 6 */33, 106, -33, -106, -/* 7 */47, 183, -47, -183 }; - -static const int kLookup[8] = { 0, 1, 2, 3, -4, -3, -2, -1 }; - -static inline etc1_byte clamp(int x) { - return (etc1_byte) (x >= 0 ? (x < 255 ? x : 255) : 0); -} - -static -inline int convert4To8(int b) { - int c = b & 0xf; - return (c << 4) | c; -} - -static -inline int convert5To8(int b) { - int c = b & 0x1f; - return (c << 3) | (c >> 2); -} - -static -inline int convert6To8(int b) { - int c = b & 0x3f; - return (c << 2) | (c >> 4); -} - -static -inline int divideBy255(int d) { - return (d + 128 + (d >> 8)) >> 8; -} - -static -inline int convert8To4(int b) { - int c = b & 0xff; - return divideBy255(c * 15); -} - -static -inline int convert8To5(int b) { - int c = b & 0xff; - return divideBy255(c * 31); -} - -static -inline int convertDiff(int base, int diff) { - return convert5To8((0x1f & base) + kLookup[0x7 & diff]); -} - -static -void decode_subblock(etc1_byte* pOut, int r, int g, int b, const int* table, - etc1_uint32 low, bool second, bool flipped) { - int baseX = 0; - int baseY = 0; - if (second) { - if (flipped) { - baseY = 2; - } else { - baseX = 2; - } - } - for (int i = 0; i < 8; i++) { - int x, y; - if (flipped) { - x = baseX + (i >> 1); - y = baseY + (i & 1); - } else { - x = baseX + (i >> 2); - y = baseY + (i & 3); - } - int k = y + (x * 4); - int offset = ((low >> k) & 1) | ((low >> (k + 15)) & 2); - int delta = table[offset]; - etc1_byte* q = pOut + 3 * (x + 4 * y); - *q++ = clamp(r + delta); - *q++ = clamp(g + delta); - *q++ = clamp(b + delta); - } -} - -// Input is an ETC1 compressed version of the data. -// Output is a 4 x 4 square of 3-byte pixels in form R, G, B - -void etc1_decode_block(const etc1_byte* pIn, etc1_byte* pOut) { - etc1_uint32 high = (pIn[0] << 24) | (pIn[1] << 16) | (pIn[2] << 8) | pIn[3]; - etc1_uint32 low = (pIn[4] << 24) | (pIn[5] << 16) | (pIn[6] << 8) | pIn[7]; - int r1, r2, g1, g2, b1, b2; - if (high & 2) { - // differential - int rBase = high >> 27; - int gBase = high >> 19; - int bBase = high >> 11; - r1 = convert5To8(rBase); - r2 = convertDiff(rBase, high >> 24); - g1 = convert5To8(gBase); - g2 = convertDiff(gBase, high >> 16); - b1 = convert5To8(bBase); - b2 = convertDiff(bBase, high >> 8); - } else { - // not differential - r1 = convert4To8(high >> 28); - r2 = convert4To8(high >> 24); - g1 = convert4To8(high >> 20); - g2 = convert4To8(high >> 16); - b1 = convert4To8(high >> 12); - b2 = convert4To8(high >> 8); - } - int tableIndexA = 7 & (high >> 5); - int tableIndexB = 7 & (high >> 2); - const int* tableA = kModifierTable + tableIndexA * 4; - const int* tableB = kModifierTable + tableIndexB * 4; - bool flipped = (high & 1) != 0; - decode_subblock(pOut, r1, g1, b1, tableA, low, false, flipped); - decode_subblock(pOut, r2, g2, b2, tableB, low, true, flipped); -} - -typedef struct { - etc1_uint32 high; - etc1_uint32 low; - etc1_uint32 score; // Lower is more accurate -} etc_compressed; - -static -inline void take_best(etc_compressed* a, const etc_compressed* b) { - if (a->score > b->score) { - *a = *b; - } -} - -static -void etc_average_colors_subblock(const etc1_byte* pIn, etc1_uint32 inMask, - etc1_byte* pColors, bool flipped, bool second) { - int r = 0; - int g = 0; - int b = 0; - - if (flipped) { - int by = 0; - if (second) { - by = 2; - } - for (int y = 0; y < 2; y++) { - int yy = by + y; - for (int x = 0; x < 4; x++) { - int i = x + 4 * yy; - if (inMask & (1 << i)) { - const etc1_byte* p = pIn + i * 3; - r += *(p++); - g += *(p++); - b += *(p++); - } - } - } - } else { - int bx = 0; - if (second) { - bx = 2; - } - for (int y = 0; y < 4; y++) { - for (int x = 0; x < 2; x++) { - int xx = bx + x; - int i = xx + 4 * y; - if (inMask & (1 << i)) { - const etc1_byte* p = pIn + i * 3; - r += *(p++); - g += *(p++); - b += *(p++); - } - } - } - } - pColors[0] = (etc1_byte)((r + 4) >> 3); - pColors[1] = (etc1_byte)((g + 4) >> 3); - pColors[2] = (etc1_byte)((b + 4) >> 3); -} - -static -inline int square(int x) { - return x * x; -} - -static etc1_uint32 chooseModifier(const etc1_byte* pBaseColors, - const etc1_byte* pIn, etc1_uint32 *pLow, int bitIndex, - const int* pModifierTable) { - etc1_uint32 bestScore = ~0; - int bestIndex = 0; - int pixelR = pIn[0]; - int pixelG = pIn[1]; - int pixelB = pIn[2]; - int r = pBaseColors[0]; - int g = pBaseColors[1]; - int b = pBaseColors[2]; - for (int i = 0; i < 4; i++) { - int modifier = pModifierTable[i]; - int decodedG = clamp(g + modifier); - etc1_uint32 score = (etc1_uint32) (6 * square(decodedG - pixelG)); - if (score >= bestScore) { - continue; - } - int decodedR = clamp(r + modifier); - score += (etc1_uint32) (3 * square(decodedR - pixelR)); - if (score >= bestScore) { - continue; - } - int decodedB = clamp(b + modifier); - score += (etc1_uint32) square(decodedB - pixelB); - if (score < bestScore) { - bestScore = score; - bestIndex = i; - } - } - etc1_uint32 lowMask = (((bestIndex >> 1) << 16) | (bestIndex & 1)) - << bitIndex; - *pLow |= lowMask; - return bestScore; -} - -static -void etc_encode_subblock_helper(const etc1_byte* pIn, etc1_uint32 inMask, - etc_compressed* pCompressed, bool flipped, bool second, - const etc1_byte* pBaseColors, const int* pModifierTable) { - int score = pCompressed->score; - if (flipped) { - int by = 0; - if (second) { - by = 2; - } - for (int y = 0; y < 2; y++) { - int yy = by + y; - for (int x = 0; x < 4; x++) { - int i = x + 4 * yy; - if (inMask & (1 << i)) { - score += chooseModifier(pBaseColors, pIn + i * 3, - &pCompressed->low, yy + x * 4, pModifierTable); - } - } - } - } else { - int bx = 0; - if (second) { - bx = 2; - } - for (int y = 0; y < 4; y++) { - for (int x = 0; x < 2; x++) { - int xx = bx + x; - int i = xx + 4 * y; - if (inMask & (1 << i)) { - score += chooseModifier(pBaseColors, pIn + i * 3, - &pCompressed->low, y + xx * 4, pModifierTable); - } - } - } - } - pCompressed->score = score; -} - -static bool inRange4bitSigned(int color) { - return color >= -4 && color <= 3; -} - -static void etc_encodeBaseColors(etc1_byte* pBaseColors, - const etc1_byte* pColors, etc_compressed* pCompressed) { - int r1, g1, b1, r2, g2, b2; // 8 bit base colors for sub-blocks - bool differential; - { - int r51 = convert8To5(pColors[0]); - int g51 = convert8To5(pColors[1]); - int b51 = convert8To5(pColors[2]); - int r52 = convert8To5(pColors[3]); - int g52 = convert8To5(pColors[4]); - int b52 = convert8To5(pColors[5]); - - r1 = convert5To8(r51); - g1 = convert5To8(g51); - b1 = convert5To8(b51); - - int dr = r52 - r51; - int dg = g52 - g51; - int db = b52 - b51; - - differential = inRange4bitSigned(dr) && inRange4bitSigned(dg) - && inRange4bitSigned(db); - if (differential) { - r2 = convert5To8(r51 + dr); - g2 = convert5To8(g51 + dg); - b2 = convert5To8(b51 + db); - pCompressed->high |= (r51 << 27) | ((7 & dr) << 24) | (g51 << 19) - | ((7 & dg) << 16) | (b51 << 11) | ((7 & db) << 8) | 2; - } - } - - if (!differential) { - int r41 = convert8To4(pColors[0]); - int g41 = convert8To4(pColors[1]); - int b41 = convert8To4(pColors[2]); - int r42 = convert8To4(pColors[3]); - int g42 = convert8To4(pColors[4]); - int b42 = convert8To4(pColors[5]); - r1 = convert4To8(r41); - g1 = convert4To8(g41); - b1 = convert4To8(b41); - r2 = convert4To8(r42); - g2 = convert4To8(g42); - b2 = convert4To8(b42); - pCompressed->high |= (r41 << 28) | (r42 << 24) | (g41 << 20) | (g42 - << 16) | (b41 << 12) | (b42 << 8); - } - pBaseColors[0] = r1; - pBaseColors[1] = g1; - pBaseColors[2] = b1; - pBaseColors[3] = r2; - pBaseColors[4] = g2; - pBaseColors[5] = b2; -} - -static -void etc_encode_block_helper(const etc1_byte* pIn, etc1_uint32 inMask, - const etc1_byte* pColors, etc_compressed* pCompressed, bool flipped) { - pCompressed->score = ~0; - pCompressed->high = (flipped ? 1 : 0); - pCompressed->low = 0; - - etc1_byte pBaseColors[6]; - - etc_encodeBaseColors(pBaseColors, pColors, pCompressed); - - int originalHigh = pCompressed->high; - - const int* pModifierTable = kModifierTable; - for (int i = 0; i < 8; i++, pModifierTable += 4) { - etc_compressed temp; - temp.score = 0; - temp.high = originalHigh | (i << 5); - temp.low = 0; - etc_encode_subblock_helper(pIn, inMask, &temp, flipped, false, - pBaseColors, pModifierTable); - take_best(pCompressed, &temp); - } - pModifierTable = kModifierTable; - etc_compressed firstHalf = *pCompressed; - for (int i = 0; i < 8; i++, pModifierTable += 4) { - etc_compressed temp; - temp.score = firstHalf.score; - temp.high = firstHalf.high | (i << 2); - temp.low = firstHalf.low; - etc_encode_subblock_helper(pIn, inMask, &temp, flipped, true, - pBaseColors + 3, pModifierTable); - if (i == 0) { - *pCompressed = temp; - } else { - take_best(pCompressed, &temp); - } - } -} - -static void writeBigEndian(etc1_byte* pOut, etc1_uint32 d) { - pOut[0] = (etc1_byte)(d >> 24); - pOut[1] = (etc1_byte)(d >> 16); - pOut[2] = (etc1_byte)(d >> 8); - pOut[3] = (etc1_byte) d; -} - -// Input is a 4 x 4 square of 3-byte pixels in form R, G, B -// inmask is a 16-bit mask where bit (1 << (x + y * 4)) tells whether the corresponding (x,y) -// pixel is valid or not. Invalid pixel color values are ignored when compressing. -// Output is an ETC1 compressed version of the data. - -void etc1_encode_block(const etc1_byte* pIn, etc1_uint32 inMask, - etc1_byte* pOut) { - etc1_byte colors[6]; - etc1_byte flippedColors[6]; - etc_average_colors_subblock(pIn, inMask, colors, false, false); - etc_average_colors_subblock(pIn, inMask, colors + 3, false, true); - etc_average_colors_subblock(pIn, inMask, flippedColors, true, false); - etc_average_colors_subblock(pIn, inMask, flippedColors + 3, true, true); - - etc_compressed a, b; - etc_encode_block_helper(pIn, inMask, colors, &a, false); - etc_encode_block_helper(pIn, inMask, flippedColors, &b, true); - take_best(&a, &b); - writeBigEndian(pOut, a.high); - writeBigEndian(pOut + 4, a.low); -} - -// Return the size of the encoded image data (does not include size of PKM header). - -etc1_uint32 etc1_get_encoded_data_size(etc1_uint32 width, etc1_uint32 height) { - return (((width + 3) & ~3) * ((height + 3) & ~3)) >> 1; -} - -// Encode an entire image. -// pIn - pointer to the image data. Formatted such that the Red component of -// pixel (x,y) is at pIn + pixelSize * x + stride * y + redOffset; -// pOut - pointer to encoded data. Must be large enough to store entire encoded image. - -int etc1_encode_image(const etc1_byte* pIn, etc1_uint32 width, etc1_uint32 height, - etc1_uint32 pixelSize, etc1_uint32 stride, etc1_byte* pOut) { - if (pixelSize < 2 || pixelSize > 3) { - return -1; - } - static const unsigned short kYMask[] = { 0x0, 0xf, 0xff, 0xfff, 0xffff }; - static const unsigned short kXMask[] = { 0x0, 0x1111, 0x3333, 0x7777, - 0xffff }; - etc1_byte block[ETC1_DECODED_BLOCK_SIZE]; - etc1_byte encoded[ETC1_ENCODED_BLOCK_SIZE]; - - etc1_uint32 encodedWidth = (width + 3) & ~3; - etc1_uint32 encodedHeight = (height + 3) & ~3; - - for (etc1_uint32 y = 0; y < encodedHeight; y += 4) { - etc1_uint32 yEnd = height - y; - if (yEnd > 4) { - yEnd = 4; - } - int ymask = kYMask[yEnd]; - for (etc1_uint32 x = 0; x < encodedWidth; x += 4) { - etc1_uint32 xEnd = width - x; - if (xEnd > 4) { - xEnd = 4; - } - int mask = ymask & kXMask[xEnd]; - for (etc1_uint32 cy = 0; cy < yEnd; cy++) { - etc1_byte* q = block + (cy * 4) * 3; - const etc1_byte* p = pIn + pixelSize * x + stride * (y + cy); - if (pixelSize == 3) { - memcpy(q, p, xEnd * 3); - } else { - for (etc1_uint32 cx = 0; cx < xEnd; cx++) { - int pixel = (p[1] << 8) | p[0]; - *q++ = convert5To8(pixel >> 11); - *q++ = convert6To8(pixel >> 5); - *q++ = convert5To8(pixel); - p += pixelSize; - } - } - } - etc1_encode_block(block, mask, encoded); - memcpy(pOut, encoded, sizeof(encoded)); - pOut += sizeof(encoded); - } - } - return 0; -} - -// Decode an entire image. -// pIn - pointer to encoded data. -// pOut - pointer to the image data. Will be written such that the Red component of -// pixel (x,y) is at pIn + pixelSize * x + stride * y + redOffset. Must be -// large enough to store entire image. - - -int etc1_decode_image(const etc1_byte* pIn, etc1_byte* pOut, - etc1_uint32 width, etc1_uint32 height, - etc1_uint32 pixelSize, etc1_uint32 stride) { - if (pixelSize < 2 || pixelSize > 3) { - return -1; - } - etc1_byte block[ETC1_DECODED_BLOCK_SIZE]; - - etc1_uint32 encodedWidth = (width + 3) & ~3; - etc1_uint32 encodedHeight = (height + 3) & ~3; - - for (etc1_uint32 y = 0; y < encodedHeight; y += 4) { - etc1_uint32 yEnd = height - y; - if (yEnd > 4) { - yEnd = 4; - } - for (etc1_uint32 x = 0; x < encodedWidth; x += 4) { - etc1_uint32 xEnd = width - x; - if (xEnd > 4) { - xEnd = 4; - } - etc1_decode_block(pIn, block); - pIn += ETC1_ENCODED_BLOCK_SIZE; - for (etc1_uint32 cy = 0; cy < yEnd; cy++) { - const etc1_byte* q = block + (cy * 4) * 3; - etc1_byte* p = pOut + pixelSize * x + stride * (y + cy); - if (pixelSize == 3) { - memcpy(p, q, xEnd * 3); - } else { - for (etc1_uint32 cx = 0; cx < xEnd; cx++) { - etc1_byte r = *q++; - etc1_byte g = *q++; - etc1_byte b = *q++; - etc1_uint32 pixel = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3); - *p++ = (etc1_byte) pixel; - *p++ = (etc1_byte) (pixel >> 8); - } - } - } - } - } - return 0; -} - -static const char kMagic[] = { 'P', 'K', 'M', ' ', '1', '0' }; - -static const etc1_uint32 ETC1_PKM_FORMAT_OFFSET = 6; -static const etc1_uint32 ETC1_PKM_ENCODED_WIDTH_OFFSET = 8; -static const etc1_uint32 ETC1_PKM_ENCODED_HEIGHT_OFFSET = 10; -static const etc1_uint32 ETC1_PKM_WIDTH_OFFSET = 12; -static const etc1_uint32 ETC1_PKM_HEIGHT_OFFSET = 14; - -static const etc1_uint32 ETC1_RGB_NO_MIPMAPS = 0; - -static void writeBEUint16(etc1_byte* pOut, etc1_uint32 data) { - pOut[0] = (etc1_byte) (data >> 8); - pOut[1] = (etc1_byte) data; -} - -static etc1_uint32 readBEUint16(const etc1_byte* pIn) { - return (pIn[0] << 8) | pIn[1]; -} - -// Format a PKM header - -void etc1_pkm_format_header(etc1_byte* pHeader, etc1_uint32 width, etc1_uint32 height) { - memcpy(pHeader, kMagic, sizeof(kMagic)); - etc1_uint32 encodedWidth = (width + 3) & ~3; - etc1_uint32 encodedHeight = (height + 3) & ~3; - writeBEUint16(pHeader + ETC1_PKM_FORMAT_OFFSET, ETC1_RGB_NO_MIPMAPS); - writeBEUint16(pHeader + ETC1_PKM_ENCODED_WIDTH_OFFSET, encodedWidth); - writeBEUint16(pHeader + ETC1_PKM_ENCODED_HEIGHT_OFFSET, encodedHeight); - writeBEUint16(pHeader + ETC1_PKM_WIDTH_OFFSET, width); - writeBEUint16(pHeader + ETC1_PKM_HEIGHT_OFFSET, height); -} - -// Check if a PKM header is correctly formatted. - -etc1_bool etc1_pkm_is_valid(const etc1_byte* pHeader) { - if (memcmp(pHeader, kMagic, sizeof(kMagic))) { - return false; - } - etc1_uint32 format = readBEUint16(pHeader + ETC1_PKM_FORMAT_OFFSET); - etc1_uint32 encodedWidth = readBEUint16(pHeader + ETC1_PKM_ENCODED_WIDTH_OFFSET); - etc1_uint32 encodedHeight = readBEUint16(pHeader + ETC1_PKM_ENCODED_HEIGHT_OFFSET); - etc1_uint32 width = readBEUint16(pHeader + ETC1_PKM_WIDTH_OFFSET); - etc1_uint32 height = readBEUint16(pHeader + ETC1_PKM_HEIGHT_OFFSET); - return format == ETC1_RGB_NO_MIPMAPS && - encodedWidth >= width && encodedWidth - width < 4 && - encodedHeight >= height && encodedHeight - height < 4; -} - -// Read the image width from a PKM header - -etc1_uint32 etc1_pkm_get_width(const etc1_byte* pHeader) { - return readBEUint16(pHeader + ETC1_PKM_WIDTH_OFFSET); -} - -// Read the image height from a PKM header - -etc1_uint32 etc1_pkm_get_height(const etc1_byte* pHeader){ - return readBEUint16(pHeader + ETC1_PKM_HEIGHT_OFFSET); -} diff --git a/third_party/etc1/etc1.h b/third_party/etc1/etc1.h deleted file mode 100644 index d66ca9d3e9..0000000000 --- a/third_party/etc1/etc1.h +++ /dev/null @@ -1,114 +0,0 @@ -// Copyright 2009 Google Inc. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -////////////////////////////////////////////////////////////////////////////////////////// - -// This is a fork of the AOSP project ETC1 codec. The original code can be found -// at the following web site: -// https://android.googlesource.com/platform/frameworks/native/+/master/opengl/libs/ETC1/ - -////////////////////////////////////////////////////////////////////////////////////////// - -#ifndef __etc1_h__ -#define __etc1_h__ - -#define ETC1_ENCODED_BLOCK_SIZE 8 -#define ETC1_DECODED_BLOCK_SIZE 48 - -#ifndef ETC1_RGB8_OES -#define ETC1_RGB8_OES 0x8D64 -#endif - -typedef unsigned char etc1_byte; -typedef int etc1_bool; -typedef unsigned int etc1_uint32; - -#ifdef __cplusplus -extern "C" { -#endif - -// Encode a block of pixels. -// -// pIn is a pointer to a ETC_DECODED_BLOCK_SIZE array of bytes that represent a -// 4 x 4 square of 3-byte pixels in form R, G, B. Byte (3 * (x + 4 * y) is the R -// value of pixel (x, y). -// -// validPixelMask is a 16-bit mask where bit (1 << (x + y * 4)) indicates whether -// the corresponding (x,y) pixel is valid. Invalid pixel color values are ignored when compressing. -// -// pOut is an ETC1 compressed version of the data. - -void etc1_encode_block(const etc1_byte* pIn, etc1_uint32 validPixelMask, etc1_byte* pOut); - -// Decode a block of pixels. -// -// pIn is an ETC1 compressed version of the data. -// -// pOut is a pointer to a ETC_DECODED_BLOCK_SIZE array of bytes that represent a -// 4 x 4 square of 3-byte pixels in form R, G, B. Byte (3 * (x + 4 * y) is the R -// value of pixel (x, y). - -void etc1_decode_block(const etc1_byte* pIn, etc1_byte* pOut); - -// Return the size of the encoded image data (does not include size of PKM header). - -etc1_uint32 etc1_get_encoded_data_size(etc1_uint32 width, etc1_uint32 height); - -// Encode an entire image. -// pIn - pointer to the image data. Formatted such that -// pixel (x,y) is at pIn + pixelSize * x + stride * y; -// pOut - pointer to encoded data. Must be large enough to store entire encoded image. -// pixelSize can be 2 or 3. 2 is an GL_UNSIGNED_SHORT_5_6_5 image, 3 is a GL_BYTE RGB image. -// returns non-zero if there is an error. - -int etc1_encode_image(const etc1_byte* pIn, etc1_uint32 width, etc1_uint32 height, - etc1_uint32 pixelSize, etc1_uint32 stride, etc1_byte* pOut); - -// Decode an entire image. -// pIn - pointer to encoded data. -// pOut - pointer to the image data. Will be written such that -// pixel (x,y) is at pIn + pixelSize * x + stride * y. Must be -// large enough to store entire image. -// pixelSize can be 2 or 3. 2 is an GL_UNSIGNED_SHORT_5_6_5 image, 3 is a GL_BYTE RGB image. -// returns non-zero if there is an error. - -int etc1_decode_image(const etc1_byte* pIn, etc1_byte* pOut, - etc1_uint32 width, etc1_uint32 height, - etc1_uint32 pixelSize, etc1_uint32 stride); - -// Size of a PKM header, in bytes. - -#define ETC_PKM_HEADER_SIZE 16 - -// Format a PKM header - -void etc1_pkm_format_header(etc1_byte* pHeader, etc1_uint32 width, etc1_uint32 height); - -// Check if a PKM header is correctly formatted. - -etc1_bool etc1_pkm_is_valid(const etc1_byte* pHeader); - -// Read the image width from a PKM header - -etc1_uint32 etc1_pkm_get_width(const etc1_byte* pHeader); - -// Read the image height from a PKM header - -etc1_uint32 etc1_pkm_get_height(const etc1_byte* pHeader); - -#ifdef __cplusplus -} -#endif - -#endif diff --git a/tools/check-headers-self-sufficient b/tools/check-headers-self-sufficient index 9b676c1094..fe58b63fb4 100755 --- a/tools/check-headers-self-sufficient +++ b/tools/check-headers-self-sufficient @@ -77,7 +77,6 @@ all_header_args = [ '-Itools/flags', '-Itools/gpu', '-Itools/timer', - '-Ithird_party/etc1', '-Ithird_party/externals/jsoncpp/include', '-Ithird_party/externals/libjpeg-turbo', '-Ithird_party/externals/sfntly/cpp/src', |