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
this allows DLLs to be built under mingw and sets up a more obvious
dependency in the shared objects
Change-Id: I33e8a6132a16ca49563492438a1b3b74be9ed6a1
When a ANMF/FRGM chunk size (read from file) is smaller than ANMF/FRGM header
size (which is constant and implicit), the parser should report an error.
Change-Id: I91d71889937f5133a97f1e83d5254cb2d7f37028
- 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
In particular, this removes any unnecessary FRGM/ANMF/ANIM chunks, and
indirectly leads to removal of unnecessary VP8X chunks as well.
This is especially useful for GIF to WebP conversion - it saves 56 bytes
(ANMF: 16+8 bytes, ANIM: 6+8 bytes, VP8X: 10+8 bytes) for non-animated GIFs.
Change-Id: I3b50a96ca585844c421b0fa4cd8593e52c3f95c5
- 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
- Also, use the term 'fragments' instead of 'tiling' in code
- This makes code consistent with the spec.
Change-Id: Ibeccffc35db23bbedb88cc5e18e29e51621931f8
- Make ANMF and FRGM chunks hierarchical so that they encompass all chunks of
that frame.
- Use this in demuxer: stop parsing a frame if all image data for it isn't
available yet. Thus, we have a frame-level incremental support; that is,
all frames that are fully available can be parsed.
- Note: We still keep incremental support for single images - so that they can
be decoded with incremental decoding.
Change-Id: Id1585b16b06caee1d84009c42a25d2de29fa6135
Use separate fourCCs "XMP " and "EXIF" instead of a common "META"
Also, some refactorization in webpmux.c
Change-Id: Iad3337e5c1b81e785c60670ce28b1f536dd7ee31
* 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
- 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
minor revision shouldn't matter, we only check major revision number.
Bumped all version numbers so that incompatibility starts *now*
Change-Id: Id06c20f03039845ae4cfb3fd121807b931d67ee4
- 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
The image_info_ was used only in GetImageCanvasWidthHeight(). So, now
we infer it from data there.
This removal fixes a bug: earlier, 'image_info' wasn't initialized in
the WebPMuxCreate() flow, and so the canvas width/height were being
calculated to be zero.
Also, a related refactoring: Combine CreateImageInfo() and
CreateDataFromImageInfo() into a single function CreateFrameTileData().
Change-Id: I7b0afb0d36dc6e13b9d6a1135fb027aa4e03716c
'Set' and 'Get' methods for images take/return a bitstream as input,
instead of separate 'image' and 'alpha' arguments.
Also,
- Make WebPDataCopy() a public API
- Use WebPData for storing data in WebPChunk.
- Fix a potential memleak.
Change-Id: I4bf5ee6b39971384cb124b5b43921c27e9aabf3e
