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add WEBP_DSP_INIT / WEBP_DSP_INIT_FUNC

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this internalizes the init checks and provides stronger synchronization
with pthreads when available while still allowing VP8GetCPUInfo to be
modified (mostly for testing purposes). windows is left as is since a
critical section or mutex would cause a leak.

Change-Id: Ieb997e014f2805c0ae39c16f13337663521356f4
(cherry picked from commit d77bf512bd)
This commit is contained in:
James Zern
2018-04-16 20:19:54 -07:00
parent c1cb86af5f
commit 0d5fad46cf
15 changed files with 54 additions and 104 deletions
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2
src/dec/vp8_dec.c
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@ -491,7 +491,7 @@ static int GetCoeffsAlt(VP8BitReader* const br,
return 16;
}
WEBP_TSAN_IGNORE_FUNCTION static void InitGetCoeffs(void) {
static WEBP_TSAN_IGNORE_FUNCTION void InitGetCoeffs(void) {
if (GetCoeffs == NULL) {
if (VP8GetCPUInfo != NULL && VP8GetCPUInfo(kSlowSSSE3)) {
GetCoeffs = GetCoeffsAlt;