On Wed, 9 Dec 2015, Janne Grunau wrote:
~25% faster dts decoding overall. The checkasm CPU cycles numbers are not that useful since synth_filter_float() calls FFTContext.imdct_half().cortex-a57 cortex-a53 synth_filter_float_c: 1866.2 3490.9 synth_filter_float_neon: 915.0 1531.5 With fftc.imdct_half forced to imdct_half_neon: cortex-a57 cortex-a53 synth_filter_float_c: 1718.4 3025.3 synth_filter_float_neon: 926.2 1530.1 --- libavcodec/aarch64/asm-offsets.h | 3 + libavcodec/synth_filter.h | 1 + libavcodec/aarch64/dcadsp_init.c | 16 +++++ libavcodec/synth_filter.c | 8 ++- libavcodec/aarch64/synth_filter_neon.S | 119 +++++++++++++++++++++++++++++++++ libavcodec/aarch64/Makefile | 3 +- 6 files changed, 147 insertions(+), 3 deletions(-) create mode 100644 libavcodec/aarch64/synth_filter_neon.S diff --git a/libavcodec/aarch64/asm-offsets.h b/libavcodec/aarch64/asm-offsets.h index 45b5c40..9cc1a0e 100644 --- a/libavcodec/aarch64/asm-offsets.h +++ b/libavcodec/aarch64/asm-offsets.h @@ -27,4 +27,7 @@ #define CELT_TMP 0x10 #define CELT_TWIDDLE (CELT_TMP + 0x8) // loaded as pair +/* FFTContex */ +#define IMDCT_HALF 0x48 +
typo Should the value be aligned with the ones above? The rest seems fine // Martin _______________________________________________ libav-devel mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-devel
