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libavcodec: Implementation of 32 bit fixed point FFT

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Iterative implementation of 32 bit fixed point split-radix FFT.
Max FFT that can be calculated currently is 2^12.

Signed-off-by: Nedeljko Babic <nbabic@mips.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Nedeljko Babic
2013-06-03 16:11:12 +02:00
committed by Michael Niedermayer
parent 27cc3e72f8
commit 18d7074b4e
19 changed files with 543 additions and 36 deletions
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21
tests/fate/fft.mak
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@@ -38,5 +38,22 @@ $(FATE_FFT_FIXED): libavcodec/fft-fixed-test$(EXESUF)
$(FATE_FFT_FIXED): CMD = run libavcodec/fft-fixed-test $(CPUFLAGS:%=-c%) $(ARGS)
$(FATE_FFT_FIXED): REF = /dev/null
FATE-$(call ALLYES, AVCODEC FFT) += $(FATE_FFT) $(FATE_FFT_FIXED)
fate-fft: $(FATE_FFT) $(FATE_FFT_FIXED)
define DEF_FFT_FIXED32
FATE_FFT_FIXED32 += fate-fft-fixed32-$(1) fate-ifft-fixed32-$(1) \
fate-mdct-fixed32-$(1) fate-imdct-fixed32-$(1)
fate-fft-fixed32-$(1): ARGS = -n$(1)
fate-ifft-fixed32-$(1): ARGS = -n$(1) -i
#fate-mdct-fixed32-$(1): ARGS = -n$(1) -m
fate-imdct-fixed32-$(1): ARGS = -n$(1) -m -i
endef
$(foreach N, 4 5 6 7 8 9 10 11 12, $(eval $(call DEF_FFT_FIXED32,$(N))))
fate-fft-fixed32-test: $(FATE_FFT_FIXED32)
$(FATE_FFT_FIXED32): libavcodec/fft-fixed32-test$(EXESUF)
$(FATE_FFT_FIXED32): CMD = run libavcodec/fft-fixed32-test $(CPUFLAGS:%=-c%) $(ARGS)
$(FATE_FFT_FIXED32): REF = /dev/null
FATE-$(call ALLYES, AVCODEC FFT) += $(FATE_FFT) $(FATE_FFT_FIXED) $(FATE_FFT_FIXED32)
fate-fft: $(FATE_FFT) $(FATE_FFT_FIXED) $(FATE_FFT_FIXED32)