Example #1
0
class MixFramebuffer(Module, AutoCSR):
	def __init__(self, pads_vga, pads_dvi, *lasmims, blender_latency=5):
		assert(all(lasmim.aw == lasmims[0].aw and lasmim.dw == lasmims[0].dw
			for lasmim in lasmims))
		pack_factor = lasmims[0].dw//bpp
		
		self.fi = FrameInitiator(lasmims[0].aw, pack_factor, len(lasmims))
		self.blender = Blender(len(lasmims), pack_factor, blender_latency)
		self.driver = Driver(pack_factor, pads_vga, pads_dvi)

		g = DataFlowGraph()
		epixel_layout = pixel_layout(pack_factor)
		for n, lasmim in enumerate(lasmims):
			intseq = misc.IntSequence(lasmim.aw, lasmim.aw)
			dma_out = AbstractActor(plumbing.Buffer)
			g.add_connection(self.fi, intseq, source_subr=self.fi.dma_subr(n))
			g.add_pipeline(intseq, AbstractActor(plumbing.Buffer), dma_lasmi.Reader(lasmim), dma_out)

			cast = structuring.Cast(lasmim.dw, epixel_layout, reverse_to=True)
			g.add_connection(dma_out, cast)
			g.add_connection(cast, self.blender, sink_subr=["i"+str(n)])

		vtg = VTG(pack_factor)
		g.add_connection(self.fi, vtg, source_subr=self.fi.timing_subr, sink_ep="timing")
		g.add_connection(self.blender, vtg, sink_ep="pixels")
		g.add_connection(vtg, self.driver)
		self.submodules += CompositeActor(g)
Example #2
0
class Framebuffer(Module, AutoCSR):
	def __init__(self, pads_vga, pads_dvi, lasmim, simulation=False):
		pack_factor = lasmim.dw//bpp
		
		g = DataFlowGraph()

		self.fi = FrameInitiator(lasmim.aw, pack_factor)

		intseq = misc.IntSequence(lasmim.aw, lasmim.aw)
		dma_out = AbstractActor(plumbing.Buffer)
		g.add_connection(self.fi, intseq, source_subr=self.fi.dma_subr())
		g.add_pipeline(intseq, AbstractActor(plumbing.Buffer), dma_lasmi.Reader(lasmim), dma_out)

		cast = structuring.Cast(lasmim.dw, pixel_layout(pack_factor), reverse_to=True)
		vtg = VTG(pack_factor)
		self.driver = Driver(pack_factor, pads_vga, pads_dvi)
		
		g.add_connection(self.fi, vtg, source_subr=self.fi.timing_subr, sink_ep="timing")
		g.add_connection(dma_out, cast)
		g.add_connection(cast, vtg, sink_ep="pixels")
		g.add_connection(vtg, self.driver)
		self.submodules += CompositeActor(g)