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Introduce CHUNK_SIZE_BYTES in muxi.h.

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Plus a style fix.

Change-Id: Id94df6c91a96598cb022c813e0981f542aebe982
This commit is contained in:
Urvang Joshi 2012-05-10 13:05:05 +05:30
parent 14757f8ae2
commit c579a71012
3 changed files with 6 additions and 6 deletions
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4
src/mux/muxedit.c
View File

@ -643,9 +643,9 @@ WebPMuxError WebPMuxAssemble(WebPMux* const mux,
// Main RIFF header.
PutLE32(data + 0, mktag('R', 'I', 'F', 'F'));
PutLE32(data + 4, (uint32_t)size - CHUNK_HEADER_SIZE);
PutLE32(data + TAG_SIZE, (uint32_t)size - CHUNK_HEADER_SIZE);
assert(size == (uint32_t)size);
PutLE32(data + 8, mktag('W', 'E', 'B', 'P'));
PutLE32(data + TAG_SIZE + CHUNK_SIZE_BYTES, mktag('W', 'E', 'B', 'P'));
// Chunks.
dst = data + RIFF_HEADER_SIZE;

1
src/mux/muxi.h
View File

@ -87,6 +87,7 @@ typedef enum {
// Maximum chunk payload (data) size such that adding the header and padding
// won't overflow an uint32.
#define MAX_CHUNK_PAYLOAD (~0U - CHUNK_HEADER_SIZE - 1)
#define CHUNK_SIZE_BYTES 4
#define NIL_TAG 0x00000000u // To signal void chunk.

7
src/mux/muxread.c
View File

@ -217,9 +217,7 @@ WebPMuxError WebPMuxGetFeatures(const WebPMux* const mux, uint32_t* flags) {
return err;
}
// TODO(urvang): Add a '#define CHUNK_SIZE_BYTES 4' and use it instead of
// hard-coded value of 4 everywhere.
if (data.size_ < 4) return WEBP_MUX_BAD_DATA;
if (data.size_ < CHUNK_SIZE_BYTES) return WEBP_MUX_BAD_DATA;
// All OK. Fill up flags.
*flags = GetLE32(data.bytes_);
@ -231,8 +229,9 @@ WebPMuxError WebPMuxGetImage(const WebPMux* const mux,
WebPMuxError err;
WebPMuxImage* wpi = NULL;
if (mux == NULL || (image == NULL && alpha == NULL))
if (mux == NULL || (image == NULL && alpha == NULL)) {
return WEBP_MUX_INVALID_ARGUMENT;
}
err = ValidateForImage(mux);
if (err != WEBP_MUX_OK) return err;