- split the doc into sections for simple and extended format and move
example layouts to the end.
- use ASCII tables to describe chunk formats
- attempt to consistently use MUST/SHOULD, etc.
- remove bold from most terms, but add them to definition lists which
allow for the styling to be changed.
Change-Id: I93c1cd33bde9ccf0b265b202ec4182ce98fd6b48
Enables --(enable|disable)-silent-rules and make V=[01] to control
compile output. Default is verbose as before.
Change-Id: Id9a65977ac8c719f4d9e3efe386750e520689b76
A call to Append/Update would index the parts_ array w/-1 as num_parts_
had yet to be set by DecodePartition0. This would cause corruption
within the VP8Decoder member.
Fixes issue #106.
Change-Id: Ib9f2811594ff19e948a66fda862a4e0a384bb9aa
If the first call to WebPIUpdate contained all of partition 0, but not
enough to decode a macroblock the test for max macro block size could
fail (4096 bytes) due to a memory buffer offset not being updated.
This change offsets the buffer in the same manner as Append().
Fixes issue #105.
Change-Id: I90ca3d0dde92eedc076933b8349d2d297f2469e8
- remove some unused functions
- move global arrays from data to read only section
- explicitly cast malloc returns; not specifically necessary, but helps
show intent
- miscellaneous formatting
Change-Id: Ib15fe5b37fe6c29c369ad928bdc3a7290cd13c84
As with the loop filter, implementing this with intrinsics is difficult
because we require subscript access for reading and writing 32 bits at a
time.
Approximately 5% decode speed improvement. This could be increased by
exposing TransformOne and rewriting TransformTwo to only handle dual
IDCTs.
Change-Id: Idd409264ab5d154a537107a1d54b419a48f7c1a8
Add a dirty_ flag to keep track of updated probabilities and the need to
recompute the level costs.
This only makes a difference for "-m 2" method which was sub-optimal.
But it's overall cleaner to have this flag.
Change-Id: I21c71201e1d07a923d97a3adf2fbbd7d67d35433
Add WebPDataCopy and use it in ReadImage which now returns WebPData*s.
Update ReadData prototype variables used with it to avoid unnecessary
const casting back and forth from void*.
Change-Id: I3f83db6729306eab0db9027b68706c8a7005ec10
- send errors to stderr
- send help to stdout
- add image size to webpmux -info output and send to stdout
- correct webpmux exit values
Change-Id: Ifd8e8493aab33a82765f7b7903cef345d96da9ae
This proved being ok, even for large pictures, provided one
takes care of overflow. When an overflow is bound to occur, the
counters are renormalized.
Overall, shaves ~12k of memory.
Change-Id: I2ba21a407964fe1a34c352371cba15166e0c4548
the p0 proba was incorrectly accumulated. Merging its contribution into
the LevelCost[] was creating more problems than anything (esp. with trellis)
so let's just not.
Change-Id: I4c07bfee471085df901228d97b20a4d9606ba44e
These will report the 7x7-averaged PSNR or SSIM, using the
new internal function WebPPictureDistortion().
This is for information only. These flags have no encoding impact.
+misc opportunistic cosmetics
Change-Id: I64c0a7eca679134d39062e438886274b22bb643f
to 'clean up' the fully-transparent area and make it more compressible
new cwebp flags: -alpha_cleanup (off by default, since gain is not 100% guaranteed)
Change-Id: I74d77e1915eee146584cd61c9c1132a41db922eb
gcc-4.0 defines __PIC__ but not __pic__. This leaves the test for
__pic__ should the inverse case exist.
Fixes issue #103; build failing with:
"error: can't find a register in class 'BREG' while reloading 'asm'"
Change-Id: Ia767a733de6ce0294146f9477ff9c46f0ebe13b0
Make sure chunk->data and wpi are not leaked by
MuxAddFrameTileInternal() in case of MEMORY_ERROR in ChunkSetNth().
Change-Id: Ie20e84b92f4bdcb7c3b94520f36b20dd2e730545
