ppc: Add and use convenience macro to check for AltiVec availability

libavcodec/ppc/dsputil_ppc.c

@@ -25,6 +25,7 @@
 #include "libavutil/attributes.h"
 #include "libavutil/cpu.h"
 #include "libavutil/mem.h"
+#include "libavutil/ppc/cpu.h"
 #include "dsputil_altivec.h"
 
 /* ***** WARNING ***** WARNING ***** WARNING ***** */
@@ -155,8 +156,7 @@ av_cold void ff_dsputil_init_ppc(DSPContext *c, AVCodecContext *avctx)
     }
     }
 
-#if HAVE_ALTIVEC
-    if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
+    if (PPC_ALTIVEC(av_get_cpu_flags())) {
         ff_dsputil_init_altivec(c, avctx);
         ff_int_init_altivec(c, avctx);
         c->gmc1 = ff_gmc1_altivec;
@@ -179,5 +179,4 @@ av_cold void ff_dsputil_init_ppc(DSPContext *c, AVCodecContext *avctx)
         }
 
     }
-#endif /* HAVE_ALTIVEC */
 }

libavutil/ppc/cpu.h

+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_PPC_CPU_H
+#define AVUTIL_PPC_CPU_H
+
+#include "config.h"
+#include "libavutil/cpu.h"
+#include "libavutil/cpu_internal.h"
+
+#define PPC_ALTIVEC(flags) CPUEXT(flags, ALTIVEC)
+
+#endif /* AVUTIL_PPC_CPU_H */

libavutil/ppc/float_dsp_init.c

@@ -22,12 +22,12 @@
 #include "libavutil/attributes.h"
 #include "libavutil/cpu.h"
 #include "libavutil/float_dsp.h"
+#include "libavutil/ppc/cpu.h"
 #include "float_dsp_altivec.h"
 
 av_cold void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int bit_exact)
 {
-#if HAVE_ALTIVEC
-    if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
+    if (!PPC_ALTIVEC(av_get_cpu_flags()))
         return;
 
     fdsp->vector_fmul = ff_vector_fmul_altivec;
@@ -37,5 +37,4 @@ av_cold void ff_float_dsp_init_ppc(AVFloatDSPContext *fdsp, int bit_exact)
     if (!bit_exact) {
         fdsp->vector_fmul_window = ff_vector_fmul_window_altivec;
     }
-#endif
 }

libswscale/utils.c

@@ -45,6 +45,7 @@
 #include "libavutil/mathematics.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
+#include "libavutil/ppc/cpu.h"
 #include "libavutil/x86/asm.h"
 #include "libavutil/x86/cpu.h"
 #include "rgb2rgb.h"
@@ -492,7 +493,7 @@ static av_cold int initFilter(int16_t **outFilter, int32_t **filterPos,
             minFilterSize = min;
     }
 
-    if (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) {
+    if (PPC_ALTIVEC(cpu_flags)) {
         // we can handle the special case 4, so we don't want to go the full 8
         if (minFilterSize < 5)
             filterAlign = 4;
@@ -805,7 +806,7 @@ int sws_setColorspaceDetails(struct SwsContext *c, const int inv_table[4],
                              contrast, saturation);
     // FIXME factorize
 
-    if (HAVE_ALTIVEC && av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC)
+    if (PPC_ALTIVEC(av_get_cpu_flags()))
         ff_yuv2rgb_init_tables_altivec(c, inv_table, brightness,
                                        contrast, saturation);
     return 0;
@@ -1121,8 +1122,7 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
         {
             const int filterAlign =
                 (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) ? 4 :
-                (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) ? 8 :
-                1;
+                PPC_ALTIVEC(cpu_flags)                    ? 8 : 1;
 
             if (initFilter(&c->hLumFilter, &c->hLumFilterPos,
                            &c->hLumFilterSize, c->lumXInc,
@@ -1145,8 +1145,7 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
     {
         const int filterAlign =
             (HAVE_MMX && cpu_flags & AV_CPU_FLAG_MMX) ? 2 :
-            (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC) ? 8 :
-            1;
+            PPC_ALTIVEC(cpu_flags)                    ? 8 : 1;
 
         if (initFilter(&c->vLumFilter, &c->vLumFilterPos, &c->vLumFilterSize,
                        c->lumYInc, srcH, dstH, filterAlign, (1 << 12),
@@ -1283,7 +1282,7 @@ av_cold int sws_init_context(SwsContext *c, SwsFilter *srcFilter,
             av_log(c, AV_LOG_INFO, "using 3DNOW\n");
         else if (INLINE_MMX(cpu_flags))
             av_log(c, AV_LOG_INFO, "using MMX\n");
-        else if (HAVE_ALTIVEC && cpu_flags & AV_CPU_FLAG_ALTIVEC)
+        else if (PPC_ALTIVEC(cpu_flags))
             av_log(c, AV_LOG_INFO, "using AltiVec\n");
         else
             av_log(c, AV_LOG_INFO, "using C\n");