dsputil: remove butterflies_float_interleave.

The function is unused.

libavcodec/dsputil.c

@@ -2377,18 +2377,6 @@ static void butterflies_float_c(float *restrict v1, float *restrict v2,
     }
 }
 
-static void butterflies_float_interleave_c(float *dst, const float *src0,
-                                           const float *src1, int len)
-{
-    int i;
-    for (i = 0; i < len; i++) {
-        float f1 = src0[i];
-        float f2 = src1[i];
-        dst[2*i    ] = f1 + f2;
-        dst[2*i + 1] = f1 - f2;
-    }
-}
-
 float ff_scalarproduct_float_c(const float *v1, const float *v2, int len)
 {
     float p = 0.0;
@@ -2823,7 +2811,6 @@ av_cold void ff_dsputil_init(DSPContext* c, AVCodecContext *avctx)
     c->vector_clip_int32 = vector_clip_int32_c;
     c->scalarproduct_float = ff_scalarproduct_float_c;
     c->butterflies_float = butterflies_float_c;
-    c->butterflies_float_interleave = butterflies_float_interleave_c;
 
     c->shrink[0]= av_image_copy_plane;
     c->shrink[1]= ff_shrink22;

libavcodec/dsputil.h

@@ -364,23 +364,6 @@ typedef struct DSPContext {
      */
     void (*butterflies_float)(float *restrict v1, float *restrict v2, int len);
 
-    /**
-     * Calculate the sum and difference of two vectors of floats and interleave
-     * results into a separate output vector of floats, with each sum
-     * positioned before the corresponding difference.
-     *
-     * @param dst  output vector
-     *             constraints: 16-byte aligned
-     * @param src0 first input vector
-     *             constraints: 32-byte aligned
-     * @param src1 second input vector
-     *             constraints: 32-byte aligned
-     * @param len  number of elements in the input
-     *             constraints: multiple of 8
-     */
-    void (*butterflies_float_interleave)(float *dst, const float *src0,
-                                         const float *src1, int len);
-
     /* (I)DCT */
     void (*fdct)(DCTELEM *block/* align 16*/);
     void (*fdct248)(DCTELEM *block/* align 16*/);

libavcodec/x86/dsputil.asm

@@ -632,50 +632,6 @@ VECTOR_FMUL_ADD
 INIT_YMM avx
 VECTOR_FMUL_ADD
 
-;-----------------------------------------------------------------------------
-; void ff_butterflies_float_interleave(float *dst, const float *src0,
-;                                      const float *src1, int len);
-;-----------------------------------------------------------------------------
-
-%macro BUTTERFLIES_FLOAT_INTERLEAVE 0
-cglobal butterflies_float_interleave, 4,4,3, dst, src0, src1, len
-%if ARCH_X86_64
-    movsxd    lenq, lend
-%endif
-    test      lenq, lenq
-    jz .end
-    shl       lenq, 2
-    lea      src0q, [src0q +   lenq]
-    lea      src1q, [src1q +   lenq]
-    lea       dstq, [ dstq + 2*lenq]
-    neg       lenq
-.loop:
-    mova        m0, [src0q + lenq]
-    mova        m1, [src1q + lenq]
-    subps       m2, m0, m1
-    addps       m0, m0, m1
-    unpcklps    m1, m0, m2
-    unpckhps    m0, m0, m2
-%if cpuflag(avx)
-    vextractf128 [dstq + 2*lenq     ], m1, 0
-    vextractf128 [dstq + 2*lenq + 16], m0, 0
-    vextractf128 [dstq + 2*lenq + 32], m1, 1
-    vextractf128 [dstq + 2*lenq + 48], m0, 1
-%else
-    mova [dstq + 2*lenq         ], m1
-    mova [dstq + 2*lenq + mmsize], m0
-%endif
-    add       lenq, mmsize
-    jl .loop
-.end:
-    REP_RET
-%endmacro
-
-INIT_XMM sse
-BUTTERFLIES_FLOAT_INTERLEAVE
-INIT_YMM avx
-BUTTERFLIES_FLOAT_INTERLEAVE
-
 ; %1 = aligned/unaligned
 %macro BSWAP_LOOPS  1
     mov      r3, r2

libavcodec/x86/dsputil_mmx.c

@@ -1867,11 +1867,6 @@ void ff_vector_clip_int32_int_sse2(int32_t *dst, const int32_t *src,
 void ff_vector_clip_int32_sse4    (int32_t *dst, const int32_t *src,
                                    int32_t min, int32_t max, unsigned int len);
 
-extern void ff_butterflies_float_interleave_sse(float *dst, const float *src0,
-                                                const float *src1, int len);
-extern void ff_butterflies_float_interleave_avx(float *dst, const float *src0,
-                                                const float *src1, int len);
-
 #define SET_QPEL_FUNCS(PFX, IDX, SIZE, CPU, PREFIX)                          \
     do {                                                                     \
     c->PFX ## _pixels_tab[IDX][ 0] = PREFIX ## PFX ## SIZE ## _mc00_ ## CPU; \
@@ -2149,7 +2144,6 @@ static void dsputil_init_sse(DSPContext *c, AVCodecContext *avctx, int mm_flags)
     c->vector_fmul_add     = ff_vector_fmul_add_sse;
 
     c->scalarproduct_float          = ff_scalarproduct_float_sse;
-    c->butterflies_float_interleave = ff_butterflies_float_interleave_sse;
 #endif /* HAVE_YASM */
 }
 
@@ -2300,7 +2294,6 @@ static void dsputil_init_avx(DSPContext *c, AVCodecContext *avctx, int mm_flags)
             c->avg_h264_chroma_pixels_tab[0] = ff_avg_h264_chroma_mc8_10_avx;
         }
     }
-    c->butterflies_float_interleave = ff_butterflies_float_interleave_avx;
     c->vector_fmul_reverse = ff_vector_fmul_reverse_avx;
     c->vector_fmul_add = ff_vector_fmul_add_avx;
 #endif /* HAVE_AVX_EXTERNAL */