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author | Björn-Egil Dahlberg <[email protected]> | 2016-12-15 13:30:14 +0100 |
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committer | Björn-Egil Dahlberg <[email protected]> | 2016-12-15 13:30:14 +0100 |
commit | 5794bc103abddca70e198857260390b896d737a7 (patch) | |
tree | 1f996d1c55e12b1282068d0914ab64c787de7c92 /lib/percept/src/egd_png.erl | |
parent | 6cc04a974724f0e115b2c8caa111418ecbd3db97 (diff) | |
download | otp-5794bc103abddca70e198857260390b896d737a7.tar.gz otp-5794bc103abddca70e198857260390b896d737a7.tar.bz2 otp-5794bc103abddca70e198857260390b896d737a7.zip |
percept: Remove application
Diffstat (limited to 'lib/percept/src/egd_png.erl')
-rw-r--r-- | lib/percept/src/egd_png.erl | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/lib/percept/src/egd_png.erl b/lib/percept/src/egd_png.erl deleted file mode 100644 index fe660513b4..0000000000 --- a/lib/percept/src/egd_png.erl +++ /dev/null @@ -1,105 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 2008-2016. All Rights Reserved. -%% -%% 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. -%% -%% %CopyrightEnd% - - -%% This code was originally written by Dan Gudmundsson for png-handling in -%% wings3d (e3d__png). -%% -%% @doc egd -%% - --module(egd_png). - --export([binary/3]). - --include("egd.hrl"). - --define(MAGIC, 137,$P,$N,$G,$\r,$\n,26,$\n). - --define(GREYSCALE, 0). --define(TRUECOLOUR, 2). --define(INDEXED, 3). --define(GREYSCALE_A, 4). --define(TRUECOLOUR_A,6). - --define(MAX_WBITS,15). - --define(CHUNK, 240). - --define(get4p1(Idx),((Idx) bsr 4)). --define(get4p2(Idx),((Idx) band 16#0F)). --define(get2p1(Idx),((Idx) bsr 6)). --define(get2p2(Idx),(((Idx) bsr 4) band 3)). --define(get2p3(Idx),(((Idx) bsr 2) band 3)). --define(get2p4(Idx),((Idx) band 3)). --define(get1p1(Idx),((Idx) bsr 7)). --define(get1p2(Idx),(((Idx) bsr 6) band 1)). --define(get1p3(Idx),(((Idx) bsr 5) band 1)). --define(get1p4(Idx),(((Idx) bsr 4) band 1)). --define(get1p5(Idx),(((Idx) bsr 3) band 1)). --define(get1p6(Idx),(((Idx) bsr 2) band 1)). --define(get1p7(Idx),(((Idx) bsr 1) band 1)). --define(get1p8(Idx),((Idx) band 1)). - -binary(W, H, Bitmap) when is_binary(Bitmap) -> - Z = zlib:open(), - Binary = bitmap2png(W, H, Bitmap, Z), - zlib:close(Z), - Binary. - - -%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% - -% Begin Tainted - -bitmap2png(W, H, Bitmap,Z) -> - HDR = create_chunk(<<"IHDR",W:32,H:32,8:8,(png_type(r8g8b8)):8,0:8,0:8,0:8>>,Z), - DATA = create_chunk(["IDAT",compress_image(0,3*W,Bitmap,[])],Z), - END = create_chunk(<<"IEND">>,Z), - list_to_binary([?MAGIC,HDR,DATA,END]). - -compress_image(I,RowLen, Bin, Acc) -> - Pos = I*RowLen, - case Bin of - <<_:Pos/binary,Row:RowLen/binary,_/binary>> -> - Filtered = filter_row(Row,RowLen), - compress_image(I+1,RowLen,Bin,[Filtered|Acc]); - _ when Pos == size(Bin) -> - Filtered = list_to_binary(lists:reverse(Acc)), - Compressed = zlib:compress(Filtered), - Compressed - end. - -filter_row(Row,_RowLen) -> - [0,Row]. - -% dialyzer warnings -%png_type(g8) -> ?GREYSCALE; -%png_type(a8) -> ?GREYSCALE; -%png_type(r8g8b8a8) -> ?TRUECOLOUR_A; -png_type(r8g8b8) -> ?TRUECOLOUR. - -create_chunk(Bin,Z) when is_list(Bin) -> - create_chunk(list_to_binary(Bin),Z); -create_chunk(Bin,Z) when is_binary(Bin) -> - Sz = size(Bin)-4, - Crc = zlib:crc32(Z,Bin), - <<Sz:32,Bin/binary,Crc:32>>. - -% End tainted |