42f8f9346c
handle malloc(0) and calloc(0) uniformly on all platforms
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also change lossless encoder logic, which was relying on explicit
NULL return from WebPSafeMalloc(0)
renamed function to CheckSizeArgumentsOverflow() explicitly
addresses issue #138
Change-Id: Ibbd51cc0281e60e86dfd4c5496274399e4c0f7f3
2013-01-22 23:40:16 +01:00
7caab1d8f6
Some cosmetic/comment fixes.
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Change-Id: Id0613f84cc53fcbeceb913c835a262451687e27b
2012-11-09 10:46:38 -08:00
8f216f7e60
remove cases of equal comparison for qsort()
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Returning 0 (equal) can lead to undefined behaviour.
And, in our cases we'll never have equal keys (added asserts for that)
Change-Id: Ifaf202df321d3f877ad2a03de42e0d6cdd1b2388
2012-09-25 19:03:41 +02:00
bff34ac1ca
harness some malloc/calloc to use WebPSafeMalloc and WebPSafeCalloc
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quite a large security sweep.
Change-Id: If150dfbb46e6e9b56210473a109c8ad6ccd0cea4
2012-08-01 12:06:04 -07:00
2fc1301577
harmonize authors as "Name (mail@address)"
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Change-Id: I85bfae61a37de75a5ed945a906002de2ef75149f
2012-07-19 16:09:47 -07:00
18cae37b91
msvc: silence some build warnings
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these are related to the removal of USE_LOSSLESS_ENCODER
Change-Id: Ib0ca5bc2766c351130507bc2e657a034c8455b34
2012-06-13 13:51:50 -07:00
78f3e34504
Enable lossless encoder code
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Remove USE_LOSSLESS_ENCODER compile flag
Update Makefile.am and makefile.unix
Change-Id: If7080c4d8f37994c7c784730c5e547bb0a851455
2012-06-13 00:26:58 -07:00
8fbb91884e
prefer webp/types.h over stdint.h
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stdint.h is part of C99 and is notably lacking under MSVC
Change-Id: Iff60dcb8bdcc7f948dc35fb0b5d47478520b570f
2012-06-04 18:34:24 -07:00
e75dc80516
Move some more defines to format_constants.h
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Also remove some duplicate const/defines.
Change-Id: I0ec48866b874f546022d72e938fb65669b0b3211
2012-05-24 17:46:01 +05:30
778c52284b
Merge "remove some variable shadowing"
2012-05-17 14:03:10 -07:00
817c9dce61
Few more HuffmanTreeToken conversions.
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Change-Id: I932b5368d279f83c462c7d916978dab3e81d7709
2012-05-16 12:15:52 +05:30
37a77a6bf4
remove some variable shadowing
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Change-Id: I4348253ec6b50639095b22c4745dc26da0904466
2012-05-15 14:04:24 -07:00
c6882c49e3
merge all tree processing into a single VP8LProcessTree()
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-> 0.1% size improvement because we're calling OptimizeForRLE()
systematically now.
Change-Id: I03bd712175728e0d46323f375134cae5a241db4b
2012-05-14 05:49:02 -07:00
8b85d01c45
Added HuffmanTreeCode Struct for tree codes.
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To represent tree codes (depth and bits array).
Change-Id: I87650886384dd10d95b16ab808dfd3bb573172bc
2012-05-14 13:50:35 +05:30
432399472f
add assert(tokens)
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Change-Id: I952a5cd15ff0a80cff349293e6403357cbc7bd8d
2012-05-11 01:45:06 -07:00
9f566d1d36
clean-up around Huffman-encode
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* refine doc
* use LUT for bit-reversal
* added assert
* Introduce HuffmanTreeToken instead of separate code/extra_bits arrays
Change-Id: I0fe0b50b55eb43a4be9f730b1abe40632a6fa7f0
2012-05-10 09:11:47 -07:00
27541fbdc0
cosmetics: VP8LCreateHuffmanTree: fix indent
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Change-Id: I025fada400366f8937208e1f9b8df483cd53a942
2012-05-09 12:11:22 -07:00
2c140e113c
Some cleanup in VP8LCreateHuffmanTree() (and related functions
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CompareHuffmanTrees() and SetBitDepths()):
- Move 'tree_size' initialization and malloc for 'tree + tree_pool'
outside the loop.
- Some renames/tweaks for readability.
Change-Id: I5cb3cc942afac6e9f51a0b97c57ee897677a48a2
2012-05-09 14:26:01 +05:30
352a4f49ab
Get rid of PackLiteralBitLengths()
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[and in turn a malloc]. Also, a few related const fixes.
Change-Id: I229519b1c34d41c78d9ad2403f1e25feab3c9d93
2012-05-07 14:24:31 -07:00
84547f540c
Add EncodeImageInternal() method.
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Most of changes in enc/vp8l.c is cherry-picked from src/lossless/encode.c
Change-Id: I27938cb2590eccbfe1db0a454343e856bd483e75
2012-05-07 14:24:25 -07:00
6b38378acb
Guard the lossless encoder (in flux) under a flag
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Change-Id: I6dd8fd17089c199001c06b1afde14233dc3e3234
2012-05-07 14:24:23 -07:00
bc7037465d
Add backward_ref, histogram & huffman encode modules from lossless.
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Change-Id: Iac056d27972956782defa182caa3ea400cdb77f8
2012-05-07 14:24:14 -07:00
