- Clarify the BNF using 'Huffman code groups' and 'Huffman code group'.
- Introduce same terminology in 'Interpretation of meta Huffman codes'.
- Make explicit mention of what is the number of Huffman code groups,
number of Huffman codes and the relation between the two.
Change-Id: I07aa9b62c1d464cd25dc02ac1a68d338b575bdc2
currently has no effect except to disable metadata extraction from the
input when the value is 'none'.
Change-Id: Ic50d4c9d634cc1f6b72ae4e130e99736c85a6477
versions < 4.0.0 used uint32 interchangeably, but with 4.0.0 toff_t
became 64-bit and TIFFTAG_EXIFIFD began returning it rather than
TIFF_LONG/uint32.
Change-Id: I42492bd24613a884c7496e7bfc0c5d892758bce9
the expression using dircount will be promoted to int when tdir_t is an
unsigned short.
quiets:
warning: format specifies type 'unsigned short' but the argument has
type 'int' [-Wformat]
Change-Id: If2e8c27454826556178b0a972aaed272d5fbfa07
- Rectify a few BNF descriptions
- Corrections in "Decoding Flow of Image Data" section:
1. The sequence in case of "S < 256" should be green, red, blue, alpha.
2. In case of "S >= 256 + 24", the index should be "S - (256 + 24)".
- Provide more description to clarify "Decoding Flow of Image Data" section.
- Some cosmetics: use '1's instead of '1, 2, 3...' sequence, as kramdown takes
care of sequencing.
Change-Id: I2b76caf72f67aae813522dc1a4115f8ec8ea6db7
tiffdec does not support and warns about multi-directory images.
previously, the code would read all the directories and thus attempt to
use the last rather than the first as the message suggests.
Change-Id: I3a10c778e6e924a3df75b41c26a9c03afb761044
- precompute filtering strength once for all at the beginning
instead of per-macroblock
- reduce size of VP8MB struct from 8 bytes to 4.
- removed VP8StoreBlock() accordingly
Change-Id: Icf3d329473e21c464770be3d72a04c9ee4c321f2
* change some (*func_ptr) construct to func_ptr simply.
* remove one memcpy
* group #include related to decoding together
Change-Id: If751cfbd9e78be75c57fb60fc9c937900c2c8fe0
unused currently, but the intent is to allow each format to populate
exif/xmp/icc with cwebp then transferring it to the webp file.
Change-Id: I0514f62de52fa7f89c595ee7ef2ad7dced910a41
The color transform block size is stored as 3 bits, not 4.
Fixed the description. The code snippet is already correct.
Change-Id: I830d848b54c121cb5426ca06853a3f1184fd9a31
The prediction block size is stored as 3 bits, not 4.
Fixed the description. The code snippet is already correct.
Change-Id: Iaa66a7e9817b58a2557c9a71c2231cc400b6ae4d
GetCoeffs is (by far) the most consuming function of the decoder.
No speed change (unfortunately), but the main loop is somehow clearer.
Change-Id: I78f1c10cadc2c8696c041f5cbda86cab92cc6598
* treat the last coeff as a special case
* re-arrange the inner code to be shorter
* replace some VP8EncBands[n] by n, for n = 0 or 1
Change-Id: I71e17b014cffad7b073e787fde06260905a6953f
The main advantage is that you can avoid the use of uint64_t
some times, sticking to 32bit only.
Default still is BITS=32, this is mainly "in case".
Change-Id: Id694028793117ba822c37d46ef6c52fa0afed4ac
The binaries should have dependency on related libraries only.
For example, 'vwebp' sould not depend on libpng, libjpeg etc.
Change-Id: I517b7ae6a9092d5de891b46d0e75d07d91548e93
