fix [2143798] Need to figure out how to do video

    Use EGLImageKHR instead of copybit directly.
    We now have the basis to use streaming YUV textures (well, in fact
    we already are). When/if we use the GPU instead of the MDP we'll
    need to make sure it supports the appropriate YUV format.

    Also make sure we compile if EGL_ANDROID_image_native_buffer is not supported

2 files changed, 91 insertions, 24 deletions

diff --git a/opengl/libagl/Android.mk b/opengl/libagl/Android.mk
index 2522656..9837845 100644
--- a/opengl/libagl/Android.mk
+++ b/opengl/libagl/Android.mk
@@ -25,6 +25,13 @@ LOCAL_SRC_FILES:= \
 	primitives.cpp.arm	        \
 	vertex.cpp.arm
 
+LOCAL_CFLAGS += -DLOG_TAG=\"libagl\"
+LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
+LOCAL_CFLAGS += -fvisibility=hidden
+
+LOCAL_SHARED_LIBRARIES := libcutils libhardware libutils libpixelflinger
+LOCAL_LDLIBS := -lpthread -ldl
+
 ifeq ($(TARGET_ARCH),arm)
 	LOCAL_SRC_FILES += fixed_asm.S iterators.S
 	LOCAL_CFLAGS += -fstrict-aliasing
@@ -38,15 +45,9 @@ endif
 ifeq ($(LIBAGL_USE_GRALLOC_COPYBITS),1)
     LOCAL_CFLAGS += -DLIBAGL_USE_GRALLOC_COPYBITS
     LOCAL_SRC_FILES += copybit.cpp
+    LOCAL_SHARED_LIBRARIES += libui
 endif
 
-LOCAL_CFLAGS += -DLOG_TAG=\"libagl\"
-LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
-
-LOCAL_SHARED_LIBRARIES := libcutils libhardware libutils libpixelflinger
-LOCAL_CFLAGS += -fvisibility=hidden
-
-LOCAL_LDLIBS := -lpthread -ldl
 
 LOCAL_MODULE_PATH := $(TARGET_OUT_SHARED_LIBRARIES)/egl
 LOCAL_MODULE:= libGLES_android
diff --git a/opengl/libagl/copybit.cpp b/opengl/libagl/copybit.cpp
index 73b2355..0c3d0ee 100644
--- a/opengl/libagl/copybit.cpp
+++ b/opengl/libagl/copybit.cpp
@@ -33,6 +33,10 @@
 #include <hardware/copybit.h>
 #include <private/ui/android_natives_priv.h>
 
+#include <ui/GraphicBuffer.h>
+#include <ui/Region.h>
+#include <ui/Rect.h>
+
 
 #define DEBUG_COPYBIT true
 
@@ -175,16 +179,6 @@ static bool copybit(GLint x, GLint y,
         dtdy /= screen_h;
     }
     dtdy = -dtdy; // see equation of dtdy above
-    if (dsdx < c->copybits.minScale || dsdx > c->copybits.maxScale
-            || dtdy < c->copybits.minScale || dtdy > c->copybits.maxScale) {
-        // The requested scale is out of the range the hardware
-        // can support.
-        LOGD_IF(DEBUG_COPYBIT,
-                "scale out of range dsdx=%08x (Wcr=%d / w=%d), "
-                "dtdy=%08x (Hcr=%d / h=%d), Ucr=%d, Vcr=%d", 
-                dsdx, Wcr, w, dtdy, Hcr, h, Ucr, Vcr);
-        return false;
-    }
 
     // copybit doesn't say anything about filtering, so we can't
     // discriminate. On msm7k, copybit will always filter.
@@ -278,21 +272,93 @@ static bool copybit(GLint x, GLint y,
         return false;
     }
 
+    copybit_device_t* copybit = c->copybits.blitEngine;
+    copybit_image_t src;
+    buffer_handle_t source_hnd = textureObject->buffer->handle;
+    textureToCopyBitImage(&textureObject->surface, opFormat, source_hnd, &src);
+    copybit_rect_t srect = { Ucr, Vcr + Hcr, Ucr + Wcr, Vcr };
+
+    /*
+     *  Below we perform extra passes needed to emulate things the h/w
+     * cannot do.
+     */
 
-    // LOGW("calling copybits");
+    const GLfixed minScaleInv = gglDivQ(0x10000, c->copybits.minScale, 16);
+    const GLfixed maxScaleInv = gglDivQ(0x10000, c->copybits.maxScale, 16);
 
-    copybit_device_t* copybit = c->copybits.blitEngine;
+    sp<GraphicBuffer> tempBitmap;
+
+    if (dsdx < maxScaleInv || dsdx > minScaleInv ||
+        dtdy < maxScaleInv || dtdy > minScaleInv)
+    {
+        // The requested scale is out of the range the hardware
+        // can support.
+        LOGD_IF(DEBUG_COPYBIT,
+                "scale out of range dsdx=%08x (Wcr=%d / w=%d), "
+                "dtdy=%08x (Hcr=%d / h=%d), Ucr=%d, Vcr=%d",
+                dsdx, Wcr, w, dtdy, Hcr, h, Ucr, Vcr);
+
+        int32_t xscale=0x10000, yscale=0x10000;
+        if (dsdx > minScaleInv)         xscale = c->copybits.minScale;
+        else if (dsdx < maxScaleInv)    xscale = c->copybits.maxScale;
+        if (dtdy > minScaleInv)         yscale = c->copybits.minScale;
+        else if (dtdy < maxScaleInv)    yscale = c->copybits.maxScale;
+        dsdx = gglMulx(dsdx, xscale);
+        dtdy = gglMulx(dtdy, yscale);
+
+        /* we handle only one step of resizing below. Handling an arbitrary
+         * number is relatively easy (replace "if" above by "while"), but requires
+         * two intermediate buffers and so far we never had the need.
+         */
+
+        if (dsdx < maxScaleInv || dsdx > minScaleInv ||
+            dtdy < maxScaleInv || dtdy > minScaleInv) {
+            LOGD_IF(DEBUG_COPYBIT,
+                    "scale out of range dsdx=%08x (Wcr=%d / w=%d), "
+                    "dtdy=%08x (Hcr=%d / h=%d), Ucr=%d, Vcr=%d",
+                    dsdx, Wcr, w, dtdy, Hcr, h, Ucr, Vcr);
+            return false;
+        }
+
+        const int tmp_w = gglMulx(srect.r - srect.l, xscale, 16);
+        const int tmp_h = gglMulx(srect.b - srect.t, yscale, 16);
+
+        LOGD_IF(DEBUG_COPYBIT,
+                "xscale=%08x, yscale=%08x, dsdx=%08x, dtdy=%08x, tmp_w=%d, tmp_h=%d",
+                xscale, yscale, dsdx, dtdy, tmp_w, tmp_h);
+
+        tempBitmap = new GraphicBuffer(
+                    tmp_w, tmp_h, src.format,
+                    GraphicBuffer::USAGE_HW_2D);
+
+        status_t err = tempBitmap->initCheck();
+        if (err == NO_ERROR) {
+            copybit_image_t tmp_dst;
+            copybit_rect_t tmp_rect;
+            tmp_dst.w = tmp_w;
+            tmp_dst.h = tmp_h;
+            tmp_dst.format = src.format;
+            tmp_dst.handle = (native_handle_t*)tempBitmap->getNativeBuffer()->handle;
+            tmp_rect.l = 0;
+            tmp_rect.t = 0;
+            tmp_rect.r = tmp_dst.w;
+            tmp_rect.b = tmp_dst.h;
+            region_iterator tmp_it(Region(Rect(tmp_rect.r, tmp_rect.b)));
+            copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0);
+            copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 0xFF);
+            copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_DISABLE);
+            err = copybit->stretch(copybit,
+                    &tmp_dst, &src, &tmp_rect, &srect, &tmp_it);
+            src = tmp_dst;
+            srect = tmp_rect;
+        }
+    }
 
     copybit_image_t dst;
     buffer_handle_t target_hnd = c->copybits.drawSurfaceBuffer;
     textureToCopyBitImage(&cbSurface, cbSurface.format, target_hnd, &dst);
     copybit_rect_t drect = {x, y, x+w, y+h};
 
-    copybit_image_t src;
-    buffer_handle_t source_hnd = textureObject->buffer->handle;
-    textureToCopyBitImage(&textureObject->surface, opFormat, source_hnd, &src);
-    copybit_rect_t srect = { Ucr, Vcr + Hcr, Ucr + Wcr, Vcr };
-
     copybit->set_parameter(copybit, COPYBIT_TRANSFORM, transform);
     copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, planeAlpha);
     copybit->set_parameter(copybit, COPYBIT_DITHER,