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Add an interface abstraction to the WebP worker thread implementation

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This allows custom implementations of threading mecanism.

Patch by Leonhard Gruenschloss.

Change-Id: Id8ea5917acd2f24fa8bce79748d1747de2751614
This commit is contained in:
skal
2014-06-12 11:35:44 +02:00
parent d6cd6358ff
commit 24e3080571
6 changed files with 165 additions and 103 deletions
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9
src/dec/frame.c
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@ -347,7 +347,7 @@ int VP8ProcessRow(VP8Decoder* const dec, VP8Io* const io) {
} else {
WebPWorker* const worker = &dec->worker_;
// Finish previous job *before* updating context
ok &= WebPWorkerSync(worker);
ok &= WebPGetWorkerInterface()->Sync(worker);
assert(worker->status_ == OK);
if (ok) { // spawn a new deblocking/output job
ctx->io_ = *io;
@ -367,7 +367,8 @@ int VP8ProcessRow(VP8Decoder* const dec, VP8Io* const io) {
ctx->f_info_ = dec->f_info_;
dec->f_info_ = tmp;
}
WebPWorkerLaunch(worker); // (reconstruct)+filter in parallel
// (reconstruct)+filter in parallel
WebPGetWorkerInterface()->Launch(worker);
if (++dec->cache_id_ == dec->num_caches_) {
dec->cache_id_ = 0;
}
@ -437,7 +438,7 @@ VP8StatusCode VP8EnterCritical(VP8Decoder* const dec, VP8Io* const io) {
int VP8ExitCritical(VP8Decoder* const dec, VP8Io* const io) {
int ok = 1;
if (dec->mt_method_ > 0) {
ok = WebPWorkerSync(&dec->worker_);
ok = WebPGetWorkerInterface()->Sync(&dec->worker_);
}
if (io->teardown != NULL) {
@ -478,7 +479,7 @@ static int InitThreadContext(VP8Decoder* const dec) {
dec->cache_id_ = 0;
if (dec->mt_method_ > 0) {
WebPWorker* const worker = &dec->worker_;
if (!WebPWorkerReset(worker)) {
if (!WebPGetWorkerInterface()->Reset(worker)) {
return VP8SetError(dec, VP8_STATUS_OUT_OF_MEMORY,
"thread initialization failed.");
}