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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
This commit is contained in:
James Zern
2018-04-16 20:19:54 -07:00
committed by Pascal Massimino
parent e122e511cf
commit d77bf512bd
15 changed files with 54 additions and 104 deletions
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7
src/dsp/rescaler.c
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@ -204,11 +204,7 @@ extern void WebPRescalerDspInitMIPSdspR2(void);
extern void WebPRescalerDspInitMSA(void);
extern void WebPRescalerDspInitNEON(void);
static volatile VP8CPUInfo rescaler_last_cpuinfo_used =
(VP8CPUInfo)&rescaler_last_cpuinfo_used;
WEBP_TSAN_IGNORE_FUNCTION void WebPRescalerDspInit(void) {
if (rescaler_last_cpuinfo_used == VP8GetCPUInfo) return;
WEBP_DSP_INIT_FUNC(WebPRescalerDspInit) {
#if !defined(WEBP_REDUCE_SIZE)
#if !WEBP_NEON_OMIT_C_CODE
WebPRescalerExportRowExpand = WebPRescalerExportRowExpand_C;
@ -253,5 +249,4 @@ WEBP_TSAN_IGNORE_FUNCTION void WebPRescalerDspInit(void) {
assert(WebPRescalerImportRowExpand != NULL);
assert(WebPRescalerImportRowShrink != NULL);
#endif // WEBP_REDUCE_SIZE
rescaler_last_cpuinfo_used = VP8GetCPUInfo;
}