[gpu] Add graphics and adapter

src/emu/graphics.rs

@@ -0,0 +1,30 @@
+use crate::misc::emulator_error::DeviceType::GRAPHICS;
+use crate::misc::emulator_error::EmulatorError;
+use crate::misc::result::EmulatorResult;
+
+pub const DEVICE_FRAMEBUFFER_SIZE: usize = 256 * 256;
+
+pub struct GraphicsProcessor {
+    framebuffer: Box<[u8; DEVICE_FRAMEBUFFER_SIZE]>,
+}
+
+/// Abstracted graphics processor. Refer GraphicsAdapter
+impl GraphicsProcessor {
+    pub fn try_new() -> EmulatorResult<GraphicsProcessor> {
+        let framebuffer = vec![0; DEVICE_FRAMEBUFFER_SIZE].into_boxed_slice()
+            .try_into()
+            .map_err(|_| {
+                EmulatorError::AllocationFailure(GRAPHICS, "Failed to allocate graphics")
+            })?;
+        Ok(GraphicsProcessor {
+            framebuffer
+        })
+    }
+    pub fn set_framebuffer(&mut self,memory_slice: &[u8]){
+        self.framebuffer.copy_from_slice(memory_slice);
+    }
+    pub fn get_framebuffer(&self) -> &[u8;DEVICE_FRAMEBUFFER_SIZE] {
+        &self.framebuffer
+    }
+}
+

src/emu/mod.rs

@@ -2,4 +2,5 @@ pub mod cpu;
 pub mod mmu;
 pub mod ram;
 pub mod iomem;
-pub mod program_counter;
+pub mod program_counter;
+pub mod graphics;