Considering the fact that insert to/lookup from the color cache is always 32
bit, use DecodeImageData() variant in that case.
Conflicts:
src/dec/vp8l.c
Change-Id: I6c665a6cfbd9bd10651c1e82fa54e687cbd54a2b
(cherry picked from commit a37eff47d6b6f0a3721a9710235cd894c2982e9b)
src/mux/muxedit.c:490: warning: 'x_offset' may be used uninitialized in this function
src/mux/muxedit.c:490: warning: 'y_offset' may be used uninitialized in this function
Change-Id: I4fd27f717e59a556354d0560b633d0edafe7a4d8
(cherry picked from commit 14cd5c6c401fd769995030c135d07fae56f2ecca)
This reverts commit dcbb1ca54aae57fadd220b269cd4907f89085ca4.
Dropping this for now to maintain compatibility for 0.3.1.
Change-Id: I44e032a072d317bb67e1439c42cff923e603038f
no precision loss observed
speed is not really faster (0.5% at max), as forward-WHT isn't called often.
also: replaced a "int << 3" (undefined by C-spec) by a "int * 8"
( supersedes https://gerrit.chromium.org/gerrit/#/c/48739/ )
Change-Id: I2d980ec2f20f4ff6be5636105ff4f1c70ffde401
(cherry picked from commit 9c4ce971a8dc8a606ada99c068795f4e33fdbf50)
rather than symlink the webm/vpx terms, use the same header as libvpx to
reference in-tree files
based on the discussion in:
https://codereview.chromium.org/12771026/
Change-Id: Ia3067ecddefaa7ee01550136e00f7b3f086d4af4
(cherry picked from commit d640614d544453ce14e2bbeeef8f33c78c8b09fd)
output picture object is overwritten, not free'd or destroyed.
Change-Id: Ibb47ab444063e7ad90ff3d296260807ffe7ddbf9
(cherry picked from commit 23d28e216dfb67ea308bba23dbd5a6d3364c3a27)
this fix is for clang (LLVM v4.2). gcc was fine.
Change-Id: Id4076cda84813f6f9548a01775b094cff22b4be9
(cherry picked from commit 3fe91635df8734b23f3c1b9d1f0c4fa8cfaf4e39)
The auto-infer logic of detecting the 'Alpha' use case
(via check '(palette[i] & 0x00ff00ffu) != 0' is failing
for this corner case image with all black pixels (rgb = 0)
and different Alpha values.
-> switch generic use-LUT detection
Change-Id: I982a8b28c8bcc43e3dc68ac358f978a4bcc14c36
(cherry picked from commit afa3450c11d968f73f0230b8756df6ee660d9a84)
Added 1 pixel cache for palette colors for faster lookup.
This will speedup images that require ApplyPalette by 6.5% for lossless
compression.
Change-Id: Id0c5174d797ffabdb09905c2ba76e60601b686f8
(cherry picked from commit 742110ccce25cc573532231cbea5e4a3323bbd2e)
* "declaration of ‘index’ shadows a global declaration [-Wshadow]"
* "signed and unsigned type in conditional expression [-Wsign-compare]"
Change-Id: I891182d919b18b6c84048486e0385027bd93b57d
(cherry picked from commit 87a4fca25f6ead8a244003d63ccb0d0b4529dc55)
Earlier such images were using roughly 9 * width * height bytes for
decoding. Now, they take 6 * width * height memory.
Change-Id: Ie4a681ca5074d96d64f30b2597fafdca648dd8f7
(cherry picked from commit 64c844863ab0d13e8dd51a59001ab55fbe64065e)
Simply get rid of an intermediate buffer of size width x height, by
using the fact that stride == width in this case.
Change-Id: I92376a2561a3beb6e723e8bcf7340c7f348e02c2
(cherry picked from commit edccd194362f86ed3b8106dd2474688e4a2a305e)
doing so is not part of ISO C; removes some pedantic warnings
Change-Id: I739ad8c5cacc133e2546e9f45c0db9d92fb93d7e
(cherry picked from commit 96e948d7b034d916e959b68e7151405f8a309eaa)
force unsigned when shifting by 24.
Change-Id: Ie229d252e2e4078107cd705b09397e686a321ffd
(cherry picked from commit f4f90880a8de432cdead8baed1e2b04e1afb6128)
The output surface CAN be changed inbetween calls to
WebPIUpdate() or WebPIAppend(), but with precautions.
Change-Id: I899afbd95738a6a8e0e7000f8daef3e74c99ddd8
(cherry picked from commit ff885bfe1f6e419bec762b28879f7039318eaf4e)
This applies to images with optional chunks (e.g. images with ALPH
chunk,
ICCP chunk etc). Before this, the incremental decoding used to work like
non-incremental decoding for such files, that is, no rows were decoded
until
all data was available.
The change is in 2 parts:
- During optional chunk parsing, don't wait for the full VP8/VP8L chunk.
- Remap 'alpha_data' pointer whenever a new buffer is allocated/used in
WebPIAppend() and WebPIUpdate().
Change-Id: I6cfd6ca1f334b9c6610fcbf662cd85fa494f2a91
(cherry picked from commit ead4d478595d0c7b112e42f6766d00b16a39e294)
Start VP8EncLoop/VP8EncTokenLoop only if VP8EncStartAlpha succeeded.
Change-Id: Id1faca3e6def88102329ae2b4974bd4d6d4c4a7a
(cherry picked from commit 67708d67013776fb0aa6593a49249a1b350fe602)
new option: -blend_alpha 0xrrggbb
also: don't force picture.use_argb value for lossless. Instead,
delay the YUVA<->ARGB conversion till WebPEncode() is called.
This make the blending more accurate when source is ARGB
and lossy compression is used (YUVA).
This has an effect on cropping/rescaling. E.g. for PNG, these
are now done in ARGB colorspace instead of YUV when lossy compression
is used.
Change-Id: I18571f1b1179881737a8dbd23ad0aa8cddae3c6b
(cherry picked from commit e7d9548c9bc94a7c8f2ce70ec81464abb4abf9d6)
user can now call WebPEncode() with any YUVA or ARGB format, for
lossy or lossless compression
also: simplified error reporting, which is done in WebPPictureARGBToYUVA()
and WebPPictureYUVAToARGB()
Change-Id: Ifb68909217175bcf5a050e5c68d06de9849468f7
(cherry picked from commit 07d87bda1b4a534a5a96ed6c2457875f153f8943)
transfer ownership of chunk passed in ChunkSetNth(). prevents freeing
the chunk in e.g., MuxImageParse() when a partial assignment (alpha but
no image) has occurred.
Change-Id: Ia69656b04fdf50f098f3816b54abd4e191248de3
Saturation was done on input coeff, not quantized one.
This saturation is not absolutely needed: output of FTransformWHT
is in range [-16320, 16321]. At quality 100, max quantization steps is 8,
so the maximal range used by QuantizeBlock() is [-2040, 2040].
But there's some extra bias (mtx->bias_[] and mtx->sharpen_[]) so
it's better to leave this saturation check for now.
addresses issue #145
Change-Id: I4b14f71cdc80c46f9eaadb2a4e8e03d396879d28
* merge cost calculation functions (BitsEntropy() and HuffmanCost())
* have HistogramAdd() specialized into separate functions
* use threshold to bail-out early
* revamp code a bit
* also: save memory by freeing free(histogram_image)
Change-Id: I8ee5d2cfa1462d5d6ea6361f5c89925a3720ef55
* VP8L shouldn't have an alpha chunk
* expect an animation to only contain frames, not a mix of image chunks
* enforce ANIM/ANMF order
* expect a full frame in a complete file
Change-Id: I953a8b6058f9bc00f1d042635548f158abdf6fce
