From fc8040d695644aaca4596adebeca4ea1369ef630 Mon Sep 17 00:00:00 2001
From: Fox Caminiti <fox@foxcam.net>
Date: Fri, 22 Jul 2022 20:45:08 -0400
Subject: first

---
 caching.cpp | 171 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 caching.cpp

(limited to 'caching.cpp')

diff --git a/caching.cpp b/caching.cpp
new file mode 100644
index 0000000..d84377a
--- /dev/null
+++ b/caching.cpp
@@ -0,0 +1,171 @@
+
+internal void
+CacheFrame(cache *Cache, pixel_buffer *CompBuffer)
+{
+
+    int MinX = 0;
+    int MinY = 0;
+    int MaxX = CompBuffer->Width;
+    int MaxY = CompBuffer->Height;
+
+
+    uint8 *Row = ((uint8 *)Cache->Address +
+                     CompBuffer->BytesPerPixel +
+                     MinY*CompBuffer->Pitch);
+    uint8 *CompRow = ((uint8 *)CompBuffer->OriginalBuffer +
+                     CompBuffer->BytesPerPixel +
+                     CompBuffer->Pitch);
+    for(int Y = MinY;
+        Y < MaxY;
+        ++Y)
+    {
+        uint32 *Pixel = (uint32 *)Row + MinX;
+        uint32 *CompPixel = (uint32 *)CompRow;
+        for(int X = MinX;
+            X < MaxX;
+            ++X)
+        {
+            *(uint32 *)Pixel++ = *(uint32 *)CompPixel;
+            CompPixel++;
+        }
+        Row += CompBuffer->Pitch;
+        CompRow += CompBuffer->Pitch;
+    }
+}
+
+internal void
+FetchCache(cache *Cache, pixel_buffer *CompBuffer)
+{
+
+    int MinX = 0;
+    int MinY = 0;
+    int MaxX = CompBuffer->Width;
+    int MaxY = CompBuffer->Height;
+
+
+    uint8 *Row = ((uint8 *)Cache->Address +
+                     CompBuffer->BytesPerPixel +
+                     MinY*CompBuffer->Pitch);
+    uint8 *CompRow = ((uint8 *)CompBuffer->OriginalBuffer +
+                     CompBuffer->BytesPerPixel +
+                     CompBuffer->Pitch);
+    for(int Y = MinY;
+        Y < MaxY;
+        ++Y)
+    {
+        uint32 *Pixel = (uint32 *)Row + MinX;
+        uint32 *CompPixel = (uint32 *)CompRow;
+        for(int X = MinX;
+            X < MaxX;
+            ++X)
+        {
+            *(uint32 *)CompPixel = *(uint32 *)Pixel++;
+            CompPixel++;
+        }
+        Row += CompBuffer->Pitch;
+        CompRow += CompBuffer->Pitch;
+    }
+}
+
+internal void
+InteractToComp(pixel_buffer *CompBuffer, cache_pool *Cache)
+{
+    int MinX = 0;
+    int MinY = 0;
+    int MaxX = CompBuffer->Width;
+    int MaxY = CompBuffer->Height;
+
+    uint8 *CompRow = ((uint8 *)CompBuffer->OriginalBuffer +
+                     CompBuffer->BytesPerPixel +
+                     CompBuffer->Pitch);
+    uint8 *Row0 = ((uint8 *)Cache->Intermediate[0].Address +
+                     CompBuffer->BytesPerPixel +
+                     CompBuffer->Pitch);
+    uint8 *Row1 = ((uint8 *)Cache->Intermediate[1].Address +
+                     CompBuffer->BytesPerPixel +
+                     CompBuffer->Pitch);
+    uint8 *Row2 = ((uint8 *)Cache->Intermediate[2].Address +
+                     CompBuffer->BytesPerPixel +
+                     CompBuffer->Pitch);
+    for(int Y = MinY;
+        Y < MaxY;
+        ++Y)
+    {
+        uint32 *CompPixel = (uint32 *)CompRow;
+        uint32 *Pixel0 = (uint32 *)Row0;
+        uint32 *Pixel1 = (uint32 *)Row1;
+        uint32 *Pixel2 = (uint32 *)Row2;
+        for(int X = MinX;
+            X < MaxX;
+            ++X)
+        {
+            RenderAlpha(CompPixel, *Pixel0);
+            RenderAlpha(CompPixel, *Pixel1);
+            RenderAlpha(CompPixel, *Pixel2);
+            CompPixel++;
+            Pixel0++;
+            Pixel1++;
+            Pixel2++;
+        }
+        CompRow += CompBuffer->Pitch;
+        Row0 += CompBuffer->Pitch;
+        Row1 += CompBuffer->Pitch;
+        Row2 += CompBuffer->Pitch;
+    }
+}
+
+internal void
+UncacheFrames(int16 Min, int16 Max, cache_pool *Cache)
+{
+    for (int16 i = Min; i < Max; i++)
+        Cache->Frame[i].Cached = false;
+};
+
+#if 0
+internal void
+CacheKeyframeAtIndex(uint16 i, struct property_channel *Property, cache_pool *Cache)
+{
+    Assert(Property->NumberOfKeyframes > 0);
+    uint16 *Sorted = Property->Sorted + i;
+    if (Property->NumberOfKeyframes == 1) {
+        // nothing happens
+    } else if (Property->NumberOfKeyframes == 2) {
+        UncacheFrames(Property->Keyframe[0].FrameNumber, Property->Keyframe[1].FrameNumber, Cache);
+    } else if (i == 0) {
+        UncacheFrames(Property->Keyframe[*Sorted].FrameNumber, Property->Keyframe[*(Sorted+1)].FrameNumber, Cache);
+    } else if (i == Property->NumberOfKeyframes - 1) {
+        UncacheFrames(Property->Keyframe[*(Sorted-1)].FrameNumber, Property->Keyframe[*Sorted].FrameNumber, Cache);
+    } else {
+        UncacheFrames(Property->Keyframe[*(Sorted-1)].FrameNumber, Property->Keyframe[*(Sorted+1)].FrameNumber, Cache);
+    }
+}
+
+internal void
+SortAndCacheKeyframeAtFrame(uint16 f, struct property_channel *Property, cache_pool *Cache)
+{
+    Assert(Property->NumberOfKeyframes > 0);
+    if (Property->NumberOfKeyframes == 1) {
+    } else if (Property->NumberOfKeyframes == 2) {
+        UncacheFrames(Property->KeyframePTR[0]->FrameNumber, Property->KeyframePTR[1]->FrameNumber, Cache);
+    } else {
+        int i = 0;
+        for (; i < Property->NumberOfKeyframes - 1; i++) {
+            if (Property->KeyframePTR[i]->FrameNumber > Property->KeyframePTR[i+1]->FrameNumber) {
+                struct keyframe *Temp = Property->KeyframePTR[i];
+                Property->KeyframePTR[i] = Property->KeyframePTR[i+1];
+                Property->KeyframePTR[i+1] = Temp;
+                break;
+            }
+            if (Property->KeyframePTR[i]->FrameNumber >= f)
+                break;
+        }
+        if (i == 0) {
+            UncacheFrames(Property->KeyframePTR[i]->FrameNumber, Property->KeyframePTR[i+1]->FrameNumber, Cache);
+        } else if (i == Property->NumberOfKeyframes - 1) {
+            UncacheFrames(Property->KeyframePTR[i-1]->FrameNumber, Property->KeyframePTR[i]->FrameNumber, Cache);
+        } else {
+            UncacheFrames(Property->KeyframePTR[i-1]->FrameNumber, Property->KeyframePTR[i+1]->FrameNumber, Cache);
+        }
+    }
+}
+#endif
-- 
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