Commit Graph

144 Commits

Author SHA1 Message Date
Vikas Arora
94a48b4bc3 Provide option to swap bytes for 16 bit colormodes
Color modes: RGB_565 & RGBA_4444
Change-Id: I571b6832b9848e5c4109272978f68623ca373383
2013-01-22 14:51:20 -08:00
Urvang Joshi
23782f95b4 Separate out mux and demux code and libraries:
- Separate out mux.h and demux.h
- muxtypes.h: new header for data types common to mux/demux
- Move some misc read/write utilities to utils/utils.h
- Remove some duplicate methods.
- Separate out mux/demux libraries

Change-Id: If9b9569b10d55d922ad9317ef51710544315d6de
2012-11-19 11:40:18 -08:00
Urvang Joshi
7caab1d8f6 Some cosmetic/comment fixes.
Change-Id: Id0613f84cc53fcbeceb913c835a262451687e27b
2012-11-09 10:46:38 -08:00
Urvang Joshi
51bb1e5de7 mux.h: correct WebPDemuxSelectFragment() prototype
This is a correction to the following change:
a00a3daf5b Use 'frgm' instead of 'tile' in
webpmux parameters

Change-Id: I8fa0bce98efdde38827fd25712017a98a6ea7388
2012-11-08 11:04:39 -08:00
Urvang Joshi
fa30c86323 Update mux code to match the spec wrt animation
- Allow a duration of 0
- Rename LOOP chunk to ANIM and add the background color field to it.
- Add a disposal method field for each animation frame.
- Modify webpmux.c binary interface to allow the input of background color
  and disposal methods. Also make '-loop' and '-bgcolor' arguments optional
  with some default values.

Change-Id: I807372a61cdb8a0d3080ae3552caf2848070bf4d
2012-11-07 11:43:06 -08:00
Urvang Joshi
a00a3daf5b Use 'frgm' instead of 'tile' in webpmux parameters
- Also, use the term 'fragments' instead of 'tiling' in code
- This makes code consistent with the spec.

Change-Id: Ibeccffc35db23bbedb88cc5e18e29e51621931f8
2012-11-06 16:09:10 -08:00
Urvang Joshi
f903cbab9a Chunk fourCCs for XMP/EXIF
Use separate fourCCs "XMP " and "EXIF" instead of a common "META"
Also, some refactorization in webpmux.c

Change-Id: Iad3337e5c1b81e785c60670ce28b1f536dd7ee31
2012-11-06 14:53:21 -08:00
Urvang Joshi
02b4356875 Add NULL check in chunk APIs
Change-Id: I173ff6c9259111762580c1963ff60e34fd1e9b6b
2012-10-31 13:33:20 -07:00
Urvang Joshi
a077072777 mux struct naming
members of public structs should not have a trailing underscore.

Change-Id: Ieef42e1da115bf42b0ea42159701e32bed7b9f60
2012-10-31 11:37:49 -07:00
Urvang Joshi
92f8059ce4 Rename some chunks:
TILE --> FRGM and FRM --> ANMF

Change-Id: I752f90b950413501aecb021a8f57882da0e01484
2012-10-30 15:02:15 -07:00
Urvang Joshi
d0c79f0552 Mux API change:
Create common APIs for image, frame and tile.

Change-Id: I709ad752133094bd5bc89dd9c832ff79802aac68
2012-10-30 14:16:29 -07:00
Pascal Massimino
f86e6abe1f add LSIM metric to WebPPictureDistortion()
LSIM stands for "local similarity": before matching
a compressed pixel to the source, we search around in the source
and minimise the squared error. So, this is close to PSNR calculation,
but mitigates some of its limitations (pure translation and noise for instance).

There's a new -print_lsim option to cwebp too.

Change-Id: Ia38561034c7a90e71d2ea0f55bb1de527eda245b
2012-10-19 06:48:11 -07:00
skal
9f469b57a9 typo: no_fancy -> no_fancy_upsampling
Change-Id: Ia0cb8c4a5b586861fb89253f59555e555a3a44db
2012-10-09 15:14:24 +02:00
James Zern
0c44f41585 src/webp/*.h: don't forward declare enums in C++
Change-Id: I36d3765e94d2b5529b321c186ccee1744785c5b3
fixes:
 error: ISO C++ forbids forward references to 'enum' types
since:
 28d25c8 replace 'typedef struct {} X;" by "typedef struct X X; struct X {};"
2012-09-28 21:21:41 -07:00
skal
28d25c8256 replace 'typedef struct {} X;" by "typedef struct X X; struct X {};"
Change-Id: I937dc8781bc87ef0c4e109d49dc1cf6f18033f12
2012-09-25 18:39:22 +02:00
Urvang Joshi
1c04a0d438 Common APIs for chunks metadata and color profile.
Change-Id: Ie105ce913c0b56e34cc26fd7ec397103354f268a
2012-08-29 08:21:43 -07:00
Urvang Joshi
ab3234ae6b Create WebPMuxFrameInfo struct for Mux APIs
Change-Id: I1f3b15d679280b5347124e1d59865a3df089043b
2012-08-23 15:18:51 +05:30
Pascal Massimino
43b0d6107a add support for ARGB -> YUVA conversion for lossless decoder
This was returning an (hard-to-explain) error before.
(through WebPDecodeYUV() for instance).

+ rationalize the incremental API:
-> add WebPINewYUVA
-> deprecated WebPINewYUV
-> add WebPIDecGetYUVA
-> deprecated WebPIDecGetYUV

+ some NULL cosmetics

Change-Id: I39a6bd6018a34294d898b29f6c40e2cf76f1037e
2012-08-03 15:41:01 -07:00
Pascal Massimino
33705ca093 bump version to 0.2.0
Change-Id: I01cb50b9c4c8e9245aede3947481cbbd27d6a19d
2012-08-03 15:41:01 -07:00
pascal massimino
5e7963000a Merge "WebPEncode: clear stats at the start of encode" into 0.2.0 2012-08-01 12:00:09 -07:00
Vikas Arora
dd1c3873fe Add image-hint for low-color images.
For low-color images, it may be better to not use color-palettes.
Users should treat this as one another hint (as with Photo &
Picture) and another parameter for tuning the compression density.
The optimum compression can still be obtained by running (outer loop)
compression with all possible tunable parameters.

Change-Id: Icb1a4face2a84774e16e801aee4a8ae97e232e8a
2012-07-31 23:11:19 -07:00
Pascal Massimino
4eb7aa64da Merge "WebPCheckMalloc() and WebPCheckCalloc():" into 0.2.0 2012-07-31 18:37:14 -07:00
James Zern
475d87d767 WebPEncode: clear stats at the start of encode
also relocate user_data from WebPAuxStats to the WebPPicture struct to
make clearing easier while placing it closer to the progress hook with
which it's used.
prior to this change some spurious lossless data could be reported in
the lossy (sans alpha) encoding case. additionally user_data could be
lost during lossless encoding.

Change-Id: I929fae3dfde4d445ff81bbaad51445ea586dd80b
2012-07-27 19:57:18 -07:00
Pascal Massimino
7d853d79dc add stats for lossless
* Extend AuxStats with new fields
  it's slightly ABI-incompatible, but i guess it's ok for 0.1.99+
  I expect to add more stats later, possibly (predictor stats, etc.)
* Have cwebp report the features used by lossless
  compression (either for alpha or full lossless coding)
* Print the PSNR for alpha (useful in case of -alpha_q)
* clean-up alpha.c signatures
+ misc cleanup (added const '* const ptr', etc.)

Change-Id: I157a21581f1793cb0c6cc0882e7b0a2dde68a970
2012-07-24 16:17:13 -07:00
James Zern
cbee59eba4 Merge commit 'v0.1.99'
* commit 'v0.1.99': (39 commits)
  Update ChangeLog
  add extra precision about default values and behaviour
  header/doc clean up
  Makefile.vc: fix webpmux.exe *-dynamic builds
  remove INAM, ICOP, ... chunks from the test webp file.
  harmonize authors as "Name (mail@address)"
  makefile.unix: provide examples/webpmux target
  update NEWS
  README: cosmetics
  man/cwebp.1: wording, change the date
  add a very crude progress report for lossless
  rename 'use_argb_input' to 'use_argb'
  add some padding bytes areas for later use
  fixing the findings by Frederic Kayser to the bitstream spec
  add missing ABI compatibility checks
  Doc: container spec text tweaks
  add ABI compatibility check
  mux.h: remove '* const' from function parameters
  encode.h: remove '* const' from function parameters
  decode.h: remove '* const' from function parameters
  ...

Conflicts:
	src/mux/muxinternal.c

Change-Id: I635d095c451742e878088464fe6232637a331511
2012-07-21 12:20:19 -07:00
James Zern
d1fd78263f Merge "add extra precision about default values and behaviour" into 0.2.0 2012-07-19 18:15:45 -07:00
Pascal Massimino
efc826e04a add extra precision about default values and behaviour
Change-Id: I445f4d3b20a53d32819fe361f74443e0a0c8a632
2012-07-19 18:08:42 -07:00
Pascal Massimino
9f29635d95 header/doc clean up
Put emphasis on RGBA decoding instead of RGB/BGR
Clarify doc at some rough spots
Misc typo fix and cosmetics

Change-Id: Ic5fcfcc5bf4d612c5de23b0a5499f1fadde55bfe
2012-07-19 18:05:03 -07:00
Urvang Joshi
a4b9b1c604 Remove some unused enum values.
- WEBP_MUX_INVALID_PARAMETER: was used only at one place, and that too
should actually be an assert().
- WEBP_MUX_ERROR: was never used.

Change-Id: I8883cb4dfae7a7918507501f21fced0c04dda36a
2012-07-19 11:23:37 +05:30
Pascal Massimino
dd1081763c rename 'use_argb_input' to 'use_argb'
long name, and there's not really an 'output' equivalent

Change-Id: I9133ff734ae8d6572cb2f607211361f011fc0bc1
2012-07-18 22:47:16 -07:00
Pascal Massimino
90516ae8f5 add some padding bytes areas for later use
so we can add few fields without breaking ABI

+ re-order fields
+ refresh the doc

Change-Id: Id60ec33934f6346e35c95fcdb4abbe1bc7b50acb
2012-07-18 22:47:13 -07:00
Pascal Massimino
f7f16a2976 add ABI compatibility check
minor revision shouldn't matter, we only check major revision number.
Bumped all version numbers so that incompatibility starts *now*

Change-Id: Id06c20f03039845ae4cfb3fd121807b931d67ee4
2012-07-18 11:53:25 -07:00
James Zern
a3ec6225d5 mux.h: remove '* const' from function parameters
makes the public interface consistent and more readable

Change-Id: I33f1d1c4ee752e353e4c10636a4df4e44d7cd03f
2012-07-17 17:21:54 -07:00
James Zern
31426ebaec encode.h: remove '* const' from function parameters
makes the public interface consistent and more readable

Change-Id: Ib93614e901e0af44bb64782357cfd9e724e050be
2012-07-17 16:26:54 -07:00
James Zern
9838e5d5ff decode.h: remove '* const' from function parameters
makes the public interface consistent and more readable

Change-Id: I067eb5ecc1094216ef6aecc65f636f69873de8f9
2012-07-17 15:48:00 -07:00
Pascal Massimino
c2416c9b61 add lossless quick encoding functions to the public API
New functions:
   WebPEncodeLosslessRGB()
   WebPEncodeLosslessBGR()
   WebPEncodeLosslessRGBA()
   WebPEncodeLosslessBGRA()

Change-Id: Id56da7569eee80c57de8f1f053fb87b217d33a4b
2012-07-17 12:02:53 -07:00
James Zern
d5e5ad6356 move decode_vp8.h from webp/ to dec/
the functions contained in it are now private

Change-Id: Ief6c81b32ae3f6d97052edac625716e5b909e66e
2012-07-16 22:12:59 -07:00
James Zern
d708ec1452 Merge "move MIN/MAX_HISTO_BITS to format_constants.h" into 0.2.0 2012-07-16 19:19:32 -07:00
Pascal Massimino
2a3ab6f925 move MIN/MAX_HISTO_BITS to format_constants.h
(under the name MAX_HUFFMAN_BITS, since the specs read:
	int huffman_bits = ReadBits(3) + 2;
)

Change-Id: Ifc66576bbd8e48518d3d78a3f515f851cf1883dc
2012-07-16 19:11:54 -07:00
James Zern
7f4647eecb Merge "clarify the colorspace naming and byte ordering of decoded samples" into 0.2.0 2012-07-16 12:16:17 -07:00
Pascal Massimino
cbf69724d2 clarify the colorspace naming and byte ordering of decoded samples
Change-Id: If5ac331bd1e45e7c959b5fa60248268ae2bbe861
2012-07-16 12:09:51 -07:00
Urvang Joshi
857650c8fc Mux: Add WebPDataInit() and remove WebPImageInfo
Change-Id: If661f7d198e284a103a53a451e9f74805119fcf9
2012-07-16 11:12:05 +05:30
James Zern
ff771e7705 don't install webp/decode_vp8.h
the VP8 decode functions do not need to be public; only
GetInfo/CheckSignature need to be marked extern as they're used by
libwebpmux.

Change-Id: Id9ab4d6166b0271cf5d04563c6dac1fcc84adbdc
2012-07-14 21:23:03 -07:00
Urvang Joshi
6808e69db8 More spec/code matching in mux:
- Match offsets, duration, width/height for frames/tiles and enforce
some constraints.
- Note that this also means using 'int's instead of 'uint32_t's for
16-bit and 24-bit fields.

Change-Id: If0b229ad9fce296372d961104aa36731a3b1304b
2012-07-13 11:47:24 +05:30
Pascal Massimino
7f22bd2596 check limit of width * height is 32 bits
Update the RIFF-specs file too

Change-Id: I113a7e25da2f7a19c1344c1dc5d496127cfe2596
2012-07-03 05:42:13 -07:00
James Zern
4c3975792b Merge "mark VP8{,L}{GetInfo,CheckSignature} as WEBP_EXTERN" 2012-06-29 10:31:26 -07:00
Pascal Massimino
fcc69923b9 add automatic YUVA/ARGB conversion during WebPEncode()
Adds new methods WebPPictureARGBToYUVA() and WebPPictureYUVAToARGB()
Depending on the value of picture->use_argb_input,
the main call WebPEncode() will convert appropriately.
Note that both conversions are lossy, so it's recommended to:
* use YUVA input for lossy compression (picture->use_argb_input=0)
* use ARGB input for lossless compression (picture->use_argb_input=1)

Change-Id: I8269d607723ee8a1136b9f4999f7ff4e657bbb04
2012-06-28 00:34:23 -07:00
Pascal Massimino
e012dfd90f make width/height coding match the spec
* width/height in VP8X chunk is 24bit now
* Added some more constants #defines

Change-Id: I2f8ca7f965a247bccd341dd079ed2abf549c39d7
2012-06-28 00:20:28 -07:00
James Zern
228d96a538 mark VP8{,L}{GetInfo,CheckSignature} as WEBP_EXTERN
these functions are used by libwebpmux

Change-Id: Ifcb79e685f3a6b53007c0dc5f220737daba97d47
2012-06-27 16:07:33 -07:00
Urvang Joshi
b494ad5096 Mux: only allow adding frame/tiles at the end.
Change-Id: I5d685628da8c8ac85144cee2e5808b30ec79fef9
2012-06-22 11:18:18 -07:00