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reorganize chunk-parsing code

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make room for future VP8X extensions

Change-Id: Ic78217c26f142403b733740b17980aa81602f83d
This commit is contained in:
Pascal Massimino
2011-08-18 11:07:13 -07:00
parent 3cf2030653
commit dfcc2136e1
5 changed files with 245 additions and 86 deletions
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11
src/dec/webpi.h
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@ -76,10 +76,13 @@ void WebPInitUpsamplersSSE2(void);
//------------------------------------------------------------------------------
// Misc utils
// If a RIFF container is detected, validate it and skip over it. Returns
// VP8 bit-stream size if RIFF header is valid else returns 0
uint32_t WebPCheckRIFFHeader(const uint8_t** data_ptr,
uint32_t* data_size_ptr);
// Validates the RIFF container (if detected) and skip over it.
// If a RIFF container is detected, returns 0 for invalid header. Else return 1.
// In case there are not enough bytes (partial RIFF container), return 0 for
// riff_size. Else return the riff_size extracted from the header.
uint32_t WebPCheckAndSkipRIFFHeader(const uint8_t** data_ptr,
uint32_t* data_size_ptr,
uint32_t* riff_size_ptr);
// Initializes VP8Io with custom setup, io and teardown functions. The default
// hooks will use the supplied 'params' as io->opaque handle.