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AudioCore: CurrentRegion() -> ReadRegion(), WriteRegion()

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This commit is contained in:
MerryMage
2016-04-25 10:01:37 +01:00
parent 1ecee38468
commit 22995bd9bf
3 changed files with 31 additions and 26 deletions
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44
src/audio_core/hle/dsp.cpp
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@ -8,8 +8,32 @@
namespace DSP {
namespace HLE {
SharedMemory g_region0;
SharedMemory g_region1;
std::array<SharedMemory, 2> g_regions;
static size_t CurrentRegionIndex() {
// The region with the higher frame counter is chosen unless there is wraparound.
// This function only returns a 0 or 1.
if (g_regions[0].frame_counter == 0xFFFFu && g_regions[1].frame_counter != 0xFFFEu) {
// Wraparound has occured.
return 1;
}
if (g_regions[1].frame_counter == 0xFFFFu && g_regions[0].frame_counter != 0xFFFEu) {
// Wraparound has occured.
return 0;
}
return (g_regions[0].frame_counter > g_regions[1].frame_counter) ? 0 : 1;
}
static SharedMemory& ReadRegion() {
return g_regions[CurrentRegionIndex()];
}
static SharedMemory& WriteRegion() {
return g_regions[1 - CurrentRegionIndex()];
}
void Init() {
DSP::HLE::ResetPipes();
@ -22,21 +46,5 @@ bool Tick() {
return true;
}
SharedMemory& CurrentRegion() {
// The region with the higher frame counter is chosen unless there is wraparound.
if (g_region0.frame_counter == 0xFFFFu && g_region1.frame_counter != 0xFFFEu) {
// Wraparound has occured.
return g_region1;
}
if (g_region1.frame_counter == 0xFFFFu && g_region0.frame_counter != 0xFFFEu) {
// Wraparound has occured.
return g_region0;
}
return (g_region0.frame_counter > g_region1.frame_counter) ? g_region0 : g_region1;
}
} // namespace HLE
} // namespace DSP