x86/synth_filter: add synth_filter_sse

Build only on x86_32 targets.
Signed-off-by: James Almer <jamrial@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>

libavcodec/x86/dcadsp.asm

@@ -199,15 +199,31 @@ INIT_XMM sse
 DCA_LFE_FIR 0
 DCA_LFE_FIR 1
 
-INIT_XMM sse2
+%macro SETZERO 1
+%if cpuflag(sse2)
+    pxor          %1, %1
+%else
+    xorps         %1, %1, %1
+%endif
+%endmacro
+
+%macro SHUF 2
+%if cpuflag(sse2)
+    pshufd        %1, %2, q0123
+%else
+    mova          %1, %2
+    shufps        %1, %1, q0123
+%endif
+%endmacro
+
 %macro INNER_LOOP   1
     ; reading backwards:  ptr1 = synth_buf + j + i; ptr2 = synth_buf + j - i
     ;~ a += window[i + j]      * (-synth_buf[15 - i + j])
     ;~ b += window[i + j + 16] * (synth_buf[i + j])
-    pshufd        m5, [ptr2 + j + (15 - 3) * 4], q0123
+    SHUF          m5, [ptr2 + j + (15 - 3) * 4]
     mova          m6, [ptr1 + j]
 %if ARCH_X86_64
-    pshufd       m11, [ptr2 + j + (15 - 3) * 4 - mmsize], q0123
+    SHUF         m11, [ptr2 + j + (15 - 3) * 4 - mmsize]
     mova         m12, [ptr1 + j + mmsize]
 %endif
     mulps         m6, [win  + %1 + j + 16 * 4]
@@ -224,10 +240,10 @@ INIT_XMM sse2
 %endif
     ;~ c += window[i + j + 32] * (synth_buf[16 + i + j])
     ;~ d += window[i + j + 48] * (synth_buf[31 - i + j])
-    pshufd        m6, [ptr2 + j + (31 - 3) * 4], q0123
+    SHUF          m6, [ptr2 + j + (31 - 3) * 4]
     mova          m5, [ptr1 + j + 16 * 4]
 %if ARCH_X86_64
-    pshufd       m12, [ptr2 + j + (31 - 3) * 4 - mmsize], q0123
+    SHUF         m12, [ptr2 + j + (31 - 3) * 4 - mmsize]
     mova         m11, [ptr1 + j + mmsize + 16 * 4]
 %endif
     mulps         m5, [win  + %1 + j + 32 * 4]
@@ -245,20 +261,25 @@ INIT_XMM sse2
     sub            j, 64 * 4
 %endmacro
 
-; void ff_synth_filter_inner_sse2(float *synth_buf, float synth_buf2[32],
-;                                 const float window[512], float out[32],
-;                                 intptr_t offset, float scale)
+; void ff_synth_filter_inner_<opt>(float *synth_buf, float synth_buf2[32],
+;                                  const float window[512], float out[32],
+;                                  intptr_t offset, float scale)
+%macro SYNTH_FILTER 0
 cglobal synth_filter_inner, 0, 6 + 4 * ARCH_X86_64, 7 + 6 * ARCH_X86_64, \
                               synth_buf, synth_buf2, window, out, off, scale
 %define scale m0
 %if ARCH_X86_32 || WIN64
+%if cpuflag(sse2)
     movd       scale, scalem
+%else
+    movss      scale, scalem
+%endif
 ; Make sure offset is in a register and not on the stack
 %define OFFQ  r4q
 %else
 %define OFFQ  offq
 %endif
-    pshufd        m0, m0, 0
+    SPLATD        m0
     ; prepare inner counter limit 1
     mov          r5q, 480
     sub          r5q, offmp
@@ -274,8 +295,8 @@ cglobal synth_filter_inner, 0, 6 + 4 * ARCH_X86_64, 7 + 6 * ARCH_X86_64, \
 %endif
 .mainloop
     ; m1 = a  m2 = b  m3 = c  m4 = d
-    pxor          m3, m3
-    pxor          m4, m4
+    SETZERO       m3
+    SETZERO       m4
     mova          m1, [buf2 + i]
     mova          m2, [buf2 + i + 16 * 4]
 %if ARCH_X86_32
@@ -292,8 +313,8 @@ cglobal synth_filter_inner, 0, 6 + 4 * ARCH_X86_64, 7 + 6 * ARCH_X86_64, \
 %define ptr2     r7q ; must be loaded
 %define win      r8q
 %define j        r9q
-    pxor          m9, m9
-    pxor         m10, m10
+    SETZERO       m9
+    SETZERO      m10
     mova          m7, [buf2 + i + mmsize]
     mova          m8, [buf2 + i + mmsize + 16 * 4]
     lea          win, [windowq + i]
@@ -350,3 +371,11 @@ cglobal synth_filter_inner, 0, 6 + 4 * ARCH_X86_64, 7 + 6 * ARCH_X86_64, \
     sub            i, (ARCH_X86_64 + 1) * mmsize
     jge    .mainloop
     RET
+%endmacro
+
+%if ARCH_X86_32
+INIT_XMM sse
+SYNTH_FILTER
+%endif
+INIT_XMM sse2
+SYNTH_FILTER

libavcodec/x86/dcadsp_init.c

@@ -56,25 +56,31 @@ av_cold void ff_dcadsp_init_x86(DCADSPContext *s)
     }
 }
 
-void ff_synth_filter_inner_sse2(float *synth_buf_ptr, float synth_buf2[32],
-                                const float window[512],
-                                float out[32], intptr_t offset, float scale);
 
-#if HAVE_YASM
-static void synth_filter_sse2(FFTContext *imdct,
-                              float *synth_buf_ptr, int *synth_buf_offset,
-                              float synth_buf2[32], const float window[512],
-                              float out[32], const float in[32], float scale)
-{
-    float *synth_buf= synth_buf_ptr + *synth_buf_offset;
-
-    imdct->imdct_half(imdct, synth_buf, in);
+#define SYNTH_FILTER_FUNC(opt)                                                 \
+void ff_synth_filter_inner_##opt(float *synth_buf_ptr, float synth_buf2[32],   \
+                                 const float window[512],                      \
+                                 float out[32], intptr_t offset, float scale); \
+static void synth_filter_##opt(FFTContext *imdct,                              \
+                               float *synth_buf_ptr, int *synth_buf_offset,    \
+                               float synth_buf2[32], const float window[512],  \
+                               float out[32], const float in[32], float scale) \
+{                                                                              \
+    float *synth_buf= synth_buf_ptr + *synth_buf_offset;                       \
+                                                                               \
+    imdct->imdct_half(imdct, synth_buf, in);                                   \
+                                                                               \
+    ff_synth_filter_inner_##opt(synth_buf, synth_buf2, window,                 \
+                                out, *synth_buf_offset, scale);                \
+                                                                               \
+    *synth_buf_offset = (*synth_buf_offset - 32) & 511;                        \
+}                                                                              \
 
-    ff_synth_filter_inner_sse2(synth_buf, synth_buf2, window,
-                               out, *synth_buf_offset, scale);
-
-    *synth_buf_offset = (*synth_buf_offset - 32) & 511;
-}
+#if HAVE_YASM
+#if ARCH_X86_32
+SYNTH_FILTER_FUNC(sse)
+#endif
+SYNTH_FILTER_FUNC(sse2)
 #endif /* HAVE_YASM */
 
 av_cold void ff_synth_filter_init_x86(SynthFilterContext *s)
@@ -82,6 +88,11 @@ av_cold void ff_synth_filter_init_x86(SynthFilterContext *s)
 #if HAVE_YASM
     int cpu_flags = av_get_cpu_flags();
 
+#if ARCH_X86_32
+    if (EXTERNAL_SSE(cpu_flags)) {
+        s->synth_filter_float = synth_filter_sse;
+    }
+#endif
     if (EXTERNAL_SSE2(cpu_flags)) {
         s->synth_filter_float = synth_filter_sse2;
     }