ffmpeg/libavcodec/riscv/Makefile

OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \
                           riscv/audiodsp_rvf.o
RVV-OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_rvv.o
OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_init.o
RVV-OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_rvv.o
OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o \
                              riscv/pixblockdsp_rvi.o
lavc/audiodsp: RISC-V F vector_clipf RV64G supports MIN & MAX instructions natively only on floating point registers, not general purpose ones. The later would require the Zbb extension. Due to that, it is actually faster to perform the clipping "properly" in FPU. Benchmarks on SiFive U74-MC (courtesy of Shanghai StarFive Tech): audiodsp.vector_clipf_c: 29551.5 audiodsp.vector_clipf_rvf: 17871.0 Also tried unrolling with 2 or 8 elements but it gets worse either way. 2022-09-26 14:52:23 +00:00			`OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_init.o \`
			`riscv/audiodsp_rvf.o`
lavc/audiodsp: RISC-V V vector_clip_int32 2022-09-26 14:52:40 +00:00			`RVV-OBJS-$(CONFIG_AUDIODSP) += riscv/audiodsp_rvv.o`
lavc/fmtconvert: RISC-V V int32_to_float_fmul_scalar 2022-09-26 14:52:43 +00:00			`OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_init.o`
			`RVV-OBJS-$(CONFIG_FMTCONVERT) += riscv/fmtconvert_rvv.o`
lavc/pixblockdsp: RISC-V I get_pixels Benchmarks on SiFive U74-MC (courtesy of Shanghai StarFive Tech): get_pixels_c: 180.0 get_pixels_rvi: 136.7 2022-09-26 14:52:24 +00:00			`OBJS-$(CONFIG_PIXBLOCKDSP) += riscv/pixblockdsp_init.o \`
			`riscv/pixblockdsp_rvi.o`