use WebPSafe[CM]alloc/WebPSafeFree instead of [cm]alloc/free

there's still some malloc/free in the external example
This is an encoder API change because of the introduction
of WebPMemoryWriterClear() for symmetry reasons.

The MemoryWriter object should probably go in examples/ instead
of being in the main lib, though.
mux_types.h stil contain some inlined free()/malloc() that are
harder to remove (we need to put them in the libwebputils lib
and make sure link is ok). Left as a TODO for now.

Also: WebPDecodeRGB*() function are still returning a pointer
that needs to be free()'d. We should call WebPSafeFree() on
these, but it means exposing the whole mechanism. TODO(later).

Change-Id: Iad2c9060f7fa6040e3ba489c8b07f4caadfab77b
This commit is contained in:
skal
2014-03-27 23:27:32 +01:00
committed by Gerrit Code Review
parent 51f406a5d7
commit af93bdd6bc
32 changed files with 168 additions and 134 deletions

7
README
View File

@@ -443,15 +443,20 @@ The encoding flow looks like:
// Set up a byte-output write method. WebPMemoryWriter, for instance.
WebPMemoryWriter wrt;
WebPMemoryWriterInit(&wrt); // initialize 'wrt'
pic.writer = MyFileWriter;
pic.custom_ptr = my_opaque_structure_to_make_MyFileWriter_work;
// initialize 'wrt' here...
// Compress!
int ok = WebPEncode(&config, &pic); // ok = 0 => error occurred!
WebPPictureFree(&pic); // must be called independently of the 'ok' result.
// output data should have been handled by the writer at that point.
// -> compressed data is the memory buffer described by wrt.mem / wrt.size
// deallocate the memory used by compressed data
WebPMemoryWriterClear(&wrt);
-------------------------------------- END PSEUDO EXAMPLE