Move mm_support() from libavcodec to libavutil, make it a public

function and rename it to av_get_cpu_flags().

Originally committed as revision 25076 to svn://svn.ffmpeg.org/ffmpeg/trunk

34 files changed, 156 insertions, 81 deletions

diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 66233d01df..a59208f0a2 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -633,7 +633,6 @@ SKIPHEADERS                            += mpegaudio3.h
 EXAMPLES = api
 
 TESTPROGS = cabac dct eval fft h264 iirfilter rangecoder snow
-TESTPROGS-$(ARCH_X86) += x86/cpuid
 TESTPROGS-$(HAVE_MMX) += motion
 TESTOBJS = dctref.o
 
diff --git a/libavcodec/arm/dsputil_init_arm.c b/libavcodec/arm/dsputil_init_arm.c
index 27b94613ef..5c132905f6 100644
--- a/libavcodec/arm/dsputil_init_arm.c
+++ b/libavcodec/arm/dsputil_init_arm.c
@@ -73,11 +73,6 @@ static void simple_idct_arm_add(uint8_t *dest, int line_size, DCTELEM *block)
     ff_add_pixels_clamped(block, dest, line_size);
 }
 
-int mm_support(void)
-{
-    return HAVE_IWMMXT * AV_CPU_FLAG_IWMMXT;
-}
-
 void dsputil_init_arm(DSPContext* c, AVCodecContext *avctx)
 {
     ff_put_pixels_clamped = c->put_pixels_clamped;
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index a9defbd6df..84ab1b485f 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -32,7 +32,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR 52
 #define LIBAVCODEC_VERSION_MINOR 87
-#define LIBAVCODEC_VERSION_MICRO  4
+#define LIBAVCODEC_VERSION_MICRO  5
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \
diff --git a/libavcodec/dct-test.c b/libavcodec/dct-test.c
index b2dfcdf39a..b45f23ed27 100644
--- a/libavcodec/dct-test.c
+++ b/libavcodec/dct-test.c
@@ -32,6 +32,7 @@
 #include <unistd.h>
 #include <math.h>
 
+#include "libavutil/cpu.h"
 #include "libavutil/common.h"
 #include "libavutil/lfg.h"
 
@@ -554,7 +555,7 @@ int main(int argc, char **argv)
     int test_idct = 0, test_248_dct = 0;
     int c,i;
     int test=1;
-    cpu_flags = mm_support();
+    cpu_flags = av_get_cpu_flags();
 
     ff_ref_dct_init();
     idct_mmx_init();
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index d88efaf3c6..6c56a65885 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -610,10 +610,6 @@ static inline int get_penalty_factor(int lambda, int lambda2, int type){
  */
 #define emms_c()
 
-/* should be defined by architectures supporting
-   one or more MultiMedia extension */
-int mm_support(void);
-
 void dsputil_init_alpha(DSPContext* c, AVCodecContext *avctx);
 void dsputil_init_arm(DSPContext* c, AVCodecContext *avctx);
 void dsputil_init_bfin(DSPContext* c, AVCodecContext *avctx);
@@ -657,10 +653,6 @@ static inline void emms(void)
 
 #define STRIDE_ALIGN 16
 
-#else
-
-#define mm_support() 0
-
 #endif
 
 #ifndef STRIDE_ALIGN
diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c
index af5f074253..b0a3a8a7fe 100644
--- a/libavcodec/h263dec.c
+++ b/libavcodec/h263dec.c
@@ -25,6 +25,7 @@
  * H.263 decoder.
  */
 
+#include "libavutil/cpu.h"
 #include "internal.h"
 #include "avcodec.h"
 #include "dsputil.h"
@@ -553,7 +554,7 @@ retry:
 #endif
 
 #if HAVE_MMX
-    if(s->codec_id == CODEC_ID_MPEG4 && s->xvid_build>=0 && avctx->idct_algo == FF_IDCT_AUTO && (mm_support() & AV_CPU_FLAG_MMX)){
+    if (s->codec_id == CODEC_ID_MPEG4 && s->xvid_build>=0 && avctx->idct_algo == FF_IDCT_AUTO && (av_get_cpu_flags() & AV_CPU_FLAG_MMX)) {
         avctx->idct_algo= FF_IDCT_XVIDMMX;
         avctx->coded_width= 0; // force reinit
 //        dsputil_init(&s->dsp, avctx);
diff --git a/libavcodec/libxvidff.c b/libavcodec/libxvidff.c
index 2079b14f20..f8aeb9c8cb 100644
--- a/libavcodec/libxvidff.c
+++ b/libavcodec/libxvidff.c
@@ -31,7 +31,7 @@
 #include <xvid.h>
 #include <unistd.h>
 #include "avcodec.h"
-#include "dsputil.h"
+#include "libavutil/cpu.h"
 #include "libavutil/intreadwrite.h"
 #include "libxvid_internal.h"
 #if !HAVE_MKSTEMP
@@ -213,7 +213,7 @@ static av_cold int xvid_encode_init(AVCodecContext *avctx)  {
 #if ARCH_PPC
     /* Xvid's PPC support is borked, use libavcodec to detect */
 #if HAVE_ALTIVEC
-    if (mm_support() & AV_CPU_FLAG_ALTIVEC) {
+    if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
         xvid_gbl_init.cpu_flags = XVID_CPU_FORCE | XVID_CPU_ALTIVEC;
     } else
 #endif
diff --git a/libavcodec/ppc/Makefile b/libavcodec/ppc/Makefile
index 175b1093b0..9b2358d49c 100644
--- a/libavcodec/ppc/Makefile
+++ b/libavcodec/ppc/Makefile
@@ -18,8 +18,7 @@ FFT-OBJS-$(HAVE_GNU_AS)                += ppc/fft_altivec_s.o           \
 ALTIVEC-OBJS-$(CONFIG_FFT)             += ppc/fft_altivec.o             \
                                           $(FFT-OBJS-yes)
 
-OBJS-$(HAVE_ALTIVEC)                   += ppc/check_altivec.o           \
-                                          ppc/dsputil_altivec.o         \
+OBJS-$(HAVE_ALTIVEC)                   += ppc/dsputil_altivec.o         \
                                           ppc/fdct_altivec.o            \
                                           ppc/float_altivec.o           \
                                           ppc/gmc_altivec.o             \
diff --git a/libavcodec/ppc/dsputil_ppc.c b/libavcodec/ppc/dsputil_ppc.c
index 3c930a8179..9e4f1aa667 100644
--- a/libavcodec/ppc/dsputil_ppc.c
+++ b/libavcodec/ppc/dsputil_ppc.c
@@ -20,6 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavcodec/dsputil.h"
 #include "dsputil_altivec.h"
 
@@ -168,7 +169,7 @@ void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx)
 #if HAVE_ALTIVEC
     if(CONFIG_H264_DECODER) dsputil_h264_init_ppc(c, avctx);
 
-    if (mm_support() & AV_CPU_FLAG_ALTIVEC) {
+    if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
         dsputil_init_altivec(c, avctx);
         if(CONFIG_VC1_DECODER)
             vc1dsp_init_altivec(c, avctx);
diff --git a/libavcodec/ppc/h264_altivec.c b/libavcodec/ppc/h264_altivec.c
index 77f80b912d..aee2bc2d1a 100644
--- a/libavcodec/ppc/h264_altivec.c
+++ b/libavcodec/ppc/h264_altivec.c
@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavcodec/dsputil.h"
 #include "libavcodec/h264data.h"
 #include "libavcodec/h264dsp.h"
@@ -969,7 +970,7 @@ H264_WEIGHT( 8, 4)
 
 void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx) {
 
-    if (mm_support() & AV_CPU_FLAG_ALTIVEC) {
+    if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
         c->put_h264_chroma_pixels_tab[0] = put_h264_chroma_mc8_altivec;
         c->avg_h264_chroma_pixels_tab[0] = avg_h264_chroma_mc8_altivec;
         c->put_no_rnd_vc1_chroma_pixels_tab[0] = put_no_rnd_vc1_chroma_mc8_altivec;
@@ -1001,7 +1002,7 @@ void dsputil_h264_init_ppc(DSPContext* c, AVCodecContext *avctx) {
 
 void ff_h264dsp_init_ppc(H264DSPContext *c)
 {
-    if (mm_support() & AV_CPU_FLAG_ALTIVEC) {
+    if (av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC) {
         c->h264_idct_add = ff_h264_idct_add_altivec;
         c->h264_idct_add8 = ff_h264_idct_add8_altivec;
         c->h264_idct_add16 = ff_h264_idct_add16_altivec;
diff --git a/libavcodec/ppc/mpegvideo_altivec.c b/libavcodec/ppc/mpegvideo_altivec.c
index 3b34a27bec..64898a10d0 100644
--- a/libavcodec/ppc/mpegvideo_altivec.c
+++ b/libavcodec/ppc/mpegvideo_altivec.c
@@ -23,6 +23,7 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include "libavutil/cpu.h"
 #include "libavcodec/dsputil.h"
 #include "libavcodec/mpegvideo.h"
 
@@ -570,7 +571,7 @@ static void dct_unquantize_h263_altivec(MpegEncContext *s,
 
 void MPV_common_init_altivec(MpegEncContext *s)
 {
-    if (!(mm_support() & AV_CPU_FLAG_ALTIVEC)) return;
+    if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC)) return;
 
     if (s->avctx->lowres==0) {
         if ((s->avctx->idct_algo == FF_IDCT_AUTO) ||
diff --git a/libavcodec/ppc/vp8dsp_altivec.c b/libavcodec/ppc/vp8dsp_altivec.c
index b294154c6c..8096c4a535 100644
--- a/libavcodec/ppc/vp8dsp_altivec.c
+++ b/libavcodec/ppc/vp8dsp_altivec.c
@@ -20,6 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavcodec/vp8dsp.h"
 #include "dsputil_altivec.h"
 #include "types_altivec.h"
@@ -265,7 +266,7 @@ static void put_vp8_pixels16_altivec(uint8_t *dst, int stride, uint8_t *src, int
 
 av_cold void ff_vp8dsp_init_altivec(VP8DSPContext *c)
 {
-    if (!(mm_support() & AV_CPU_FLAG_ALTIVEC))
+    if (!(av_get_cpu_flags() & AV_CPU_FLAG_ALTIVEC))
         return;
 
     c->put_vp8_epel_pixels_tab[0][0][0] = put_vp8_pixels16_altivec;
diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index bbda8fadf0..0974f7051e 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -43,8 +43,7 @@ MMX-OBJS-$(HAVE_YASM)                  += x86/dsputil_yasm.o            \
 
 MMX-OBJS-$(CONFIG_FFT)                 += x86/fft.o
 
-OBJS-$(HAVE_MMX)                       += x86/cpuid.o                   \
-                                          x86/dnxhd_mmx.o               \
+OBJS-$(HAVE_MMX)                       += x86/dnxhd_mmx.o               \
                                           x86/dsputil_mmx.o             \
                                           x86/fdct_mmx.o                \
                                           x86/idct_mmx_xvid.o           \
diff --git a/libavcodec/x86/cavsdsp_mmx.c b/libavcodec/x86/cavsdsp_mmx.c
index 2ec53395cc..0f5fdaa53d 100644
--- a/libavcodec/x86/cavsdsp_mmx.c
+++ b/libavcodec/x86/cavsdsp_mmx.c
@@ -23,6 +23,7 @@
  */
 
 #include "libavutil/common.h"
+#include "libavutil/cpu.h"
 #include "libavutil/x86_cpu.h"
 #include "libavcodec/dsputil.h"
 #include "libavcodec/cavsdsp.h"
@@ -472,7 +473,7 @@ static void ff_cavsdsp_init_3dnow(CAVSDSPContext* c, AVCodecContext *avctx) {
 
 void ff_cavsdsp_init_mmx(CAVSDSPContext *c, AVCodecContext *avctx)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     if (mm_flags & AV_CPU_FLAG_MMX2)  ff_cavsdsp_init_mmx2 (c, avctx);
     if (mm_flags & AV_CPU_FLAG_3DNOW) ff_cavsdsp_init_3dnow(c, avctx);
diff --git a/libavcodec/x86/dnxhd_mmx.c b/libavcodec/x86/dnxhd_mmx.c
index 644dcf1537..afe7e669f6 100644
--- a/libavcodec/x86/dnxhd_mmx.c
+++ b/libavcodec/x86/dnxhd_mmx.c
@@ -52,7 +52,7 @@ static void get_pixels_8x4_sym_sse2(DCTELEM *block, const uint8_t *pixels, int l
 
 void ff_dnxhd_init_mmx(DNXHDEncContext *ctx)
 {
-    if (mm_support() & AV_CPU_FLAG_SSE2) {
+    if (av_get_cpu_flags() & AV_CPU_FLAG_SSE2) {
         ctx->get_pixels_8x4_sym = get_pixels_8x4_sym_sse2;
     }
 }
diff --git a/libavcodec/x86/dsputil_mmx.c b/libavcodec/x86/dsputil_mmx.c
index b5d32b67ff..a4480f71b2 100644
--- a/libavcodec/x86/dsputil_mmx.c
+++ b/libavcodec/x86/dsputil_mmx.c
@@ -2523,7 +2523,7 @@ float ff_scalarproduct_float_sse(const float *v1, const float *v2, int order);
 
 void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     if (avctx->dsp_mask) {
         if (avctx->dsp_mask & AV_CPU_FLAG_FORCE)
diff --git a/libavcodec/x86/dsputilenc_mmx.c b/libavcodec/x86/dsputilenc_mmx.c
index f78fc319c3..c415ed79d0 100644
--- a/libavcodec/x86/dsputilenc_mmx.c
+++ b/libavcodec/x86/dsputilenc_mmx.c
@@ -22,6 +22,7 @@
  * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
  */
 
+#include "libavutil/cpu.h"
 #include "libavutil/x86_cpu.h"
 #include "libavcodec/dsputil.h"
 #include "libavcodec/mpegvideo.h"
@@ -1350,7 +1351,7 @@ static int ssd_int8_vs_int16_mmx(const int8_t *pix1, const int16_t *pix2, int si
 
 void dsputilenc_init_mmx(DSPContext* c, AVCodecContext *avctx)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     if (mm_flags & AV_CPU_FLAG_MMX) {
         const int dct_algo = avctx->dct_algo;
diff --git a/libavcodec/x86/fft.c b/libavcodec/x86/fft.c
index acb508f3ec..771b1e6649 100644
--- a/libavcodec/x86/fft.c
+++ b/libavcodec/x86/fft.c
@@ -16,13 +16,14 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavcodec/dsputil.h"
 #include "fft.h"
 
 av_cold void ff_fft_init_mmx(FFTContext *s)
 {
 #if HAVE_YASM
-    int has_vectors = mm_support();
+    int has_vectors = av_get_cpu_flags();
     if (has_vectors & AV_CPU_FLAG_SSE && HAVE_SSE) {
         /* SSE for P3/P4/K8 */
         s->imdct_calc  = ff_imdct_calc_sse;
@@ -46,7 +47,7 @@ av_cold void ff_fft_init_mmx(FFTContext *s)
 #if CONFIG_DCT
 av_cold void ff_dct_init_mmx(DCTContext *s)
 {
-    int has_vectors = mm_support();
+    int has_vectors = av_get_cpu_flags();
     if (has_vectors & AV_CPU_FLAG_SSE && HAVE_SSE)
         s->dct32 = ff_dct32_float_sse;
 }
diff --git a/libavcodec/x86/h264_intrapred_init.c b/libavcodec/x86/h264_intrapred_init.c
index dd02de81e5..4471453d63 100644
--- a/libavcodec/x86/h264_intrapred_init.c
+++ b/libavcodec/x86/h264_intrapred_init.c
@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavcodec/h264pred.h"
 
 void ff_pred16x16_vertical_mmx     (uint8_t *src, int stride);
@@ -48,7 +49,7 @@ void ff_pred4x4_vertical_vp8_mmxext(uint8_t *src, const uint8_t *topright, int s
 
 void ff_h264_pred_init_x86(H264PredContext *h, int codec_id)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
 #if HAVE_YASM
     if (mm_flags & AV_CPU_FLAG_MMX) {
diff --git a/libavcodec/x86/h264dsp_mmx.c b/libavcodec/x86/h264dsp_mmx.c
index 1f3e06bfb9..9d6513ed90 100644
--- a/libavcodec/x86/h264dsp_mmx.c
+++ b/libavcodec/x86/h264dsp_mmx.c
@@ -18,6 +18,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavutil/x86_cpu.h"
 #include "libavcodec/h264dsp.h"
 #include "dsputil_mmx.h"
@@ -742,7 +743,7 @@ H264_BIWEIGHT_MMX    ( 4,  2)
 
 void ff_h264dsp_init_x86(H264DSPContext *c)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     if (mm_flags & AV_CPU_FLAG_MMX) {
         c->h264_idct_dc_add=
diff --git a/libavcodec/x86/motion_est_mmx.c b/libavcodec/x86/motion_est_mmx.c
index d7870c580e..646b8c179e 100644
--- a/libavcodec/x86/motion_est_mmx.c
+++ b/libavcodec/x86/motion_est_mmx.c
@@ -427,7 +427,7 @@ PIX_SAD(mmx2)
 
 void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     if (mm_flags & AV_CPU_FLAG_MMX) {
         c->pix_abs[0][0] = sad16_mmx;
diff --git a/libavcodec/x86/mpegaudiodec_mmx.c b/libavcodec/x86/mpegaudiodec_mmx.c
index 6cc45bed09..2f34281510 100644
--- a/libavcodec/x86/mpegaudiodec_mmx.c
+++ b/libavcodec/x86/mpegaudiodec_mmx.c
@@ -19,6 +19,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavutil/x86_cpu.h"
 
 #define CONFIG_FLOAT 1
@@ -149,7 +150,7 @@ static void apply_window_mp3(float *in, float *win, int *unused, float *out,
 
 void ff_mpegaudiodec_init_mmx(MPADecodeContext *s)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     if (mm_flags & AV_CPU_FLAG_SSE2) {
         s->apply_window_mp3 = apply_window_mp3;
diff --git a/libavcodec/x86/mpegvideo_mmx.c b/libavcodec/x86/mpegvideo_mmx.c
index a935667d97..c84fb0114f 100644
--- a/libavcodec/x86/mpegvideo_mmx.c
+++ b/libavcodec/x86/mpegvideo_mmx.c
@@ -22,6 +22,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavutil/x86_cpu.h"
 #include "libavcodec/avcodec.h"
 #include "libavcodec/dsputil.h"
@@ -625,7 +626,7 @@ static void  denoise_dct_sse2(MpegEncContext *s, DCTELEM *block){
 
 void MPV_common_init_mmx(MpegEncContext *s)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     if (mm_flags & AV_CPU_FLAG_MMX) {
         const int dct_algo = s->avctx->dct_algo;
diff --git a/libavcodec/x86/snowdsp_mmx.c b/libavcodec/x86/snowdsp_mmx.c
index cc65b9a0c6..d9d589eb5a 100644
--- a/libavcodec/x86/snowdsp_mmx.c
+++ b/libavcodec/x86/snowdsp_mmx.c
@@ -875,7 +875,7 @@ static void ff_snow_inner_add_yblock_mmx(const uint8_t *obmc, const int obmc_str
 
 void ff_dwt_init_x86(DWTContext *c)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     if (mm_flags & AV_CPU_FLAG_MMX) {
         if(mm_flags & AV_CPU_FLAG_SSE2 & 0){
diff --git a/libavcodec/x86/vc1dsp_mmx.c b/libavcodec/x86/vc1dsp_mmx.c
index 7a9a6bebbd..8889bb36e6 100644
--- a/libavcodec/x86/vc1dsp_mmx.c
+++ b/libavcodec/x86/vc1dsp_mmx.c
@@ -24,6 +24,7 @@
  * OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include "libavutil/cpu.h"
 #include "libavutil/x86_cpu.h"
 #include "libavcodec/dsputil.h"
 #include "dsputil_mmx.h"
@@ -714,7 +715,7 @@ static void vc1_h_loop_filter16_sse4(uint8_t *src, int stride, int pq)
 #endif
 
 void ff_vc1dsp_init_mmx(DSPContext* dsp, AVCodecContext *avctx) {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     dsp->put_vc1_mspel_pixels_tab[ 0] = ff_put_vc1_mspel_mc00_mmx;
     dsp->put_vc1_mspel_pixels_tab[ 4] = put_vc1_mspel_mc01_mmx;
diff --git a/libavcodec/x86/vp56dsp_init.c b/libavcodec/x86/vp56dsp_init.c
index 719190b247..87fc935315 100644
--- a/libavcodec/x86/vp56dsp_init.c
+++ b/libavcodec/x86/vp56dsp_init.c
@@ -20,6 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavutil/x86_cpu.h"
 #include "libavcodec/dsputil.h"
 #include "libavcodec/vp56dsp.h"
@@ -32,7 +33,7 @@ void ff_vp6_filter_diag4_sse2(uint8_t *dst, uint8_t *src, int stride,
 av_cold void ff_vp56dsp_init_x86(VP56DSPContext* c, enum CodecID codec)
 {
 #if HAVE_YASM
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
     if (CONFIG_VP6_DECODER && codec == CODEC_ID_VP6) {
         if (mm_flags & AV_CPU_FLAG_MMX) {
diff --git a/libavcodec/x86/vp8dsp-init.c b/libavcodec/x86/vp8dsp-init.c
index f84bfed3a9..201b34e243 100644
--- a/libavcodec/x86/vp8dsp-init.c
+++ b/libavcodec/x86/vp8dsp-init.c
@@ -20,6 +20,7 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#include "libavutil/cpu.h"
 #include "libavutil/x86_cpu.h"
 #include "libavcodec/vp8dsp.h"
 
@@ -282,7 +283,7 @@ DECLARE_LOOP_FILTER(sse4)
 
 av_cold void ff_vp8dsp_init_x86(VP8DSPContext* c)
 {
-    int mm_flags = mm_support();
+    int mm_flags = av_get_cpu_flags();
 
 #if HAVE_YASM
     if (mm_flags & AV_CPU_FLAG_MMX) {
diff --git a/libavutil/Makefile b/libavutil/Makefile
index c74eb70208..545e1c23aa 100644
--- a/libavutil/Makefile
+++ b/libavutil/Makefile
@@ -34,6 +34,7 @@ OBJS = adler32.o                                                        \
        aes.o                                                            \
        avstring.o                                                       \
        base64.o                                                         \
+       cpu.o                                                            \
        crc.o                                                            \
        des.o                                                            \
        error.o                                                          \
@@ -56,7 +57,7 @@ OBJS = adler32.o                                                        \
        tree.o                                                           \
        utils.o                                                          \
 
-TESTPROGS = adler32 aes base64 crc des lls md5 pca sha softfloat tree
+TESTPROGS = adler32 aes base64 cpu crc des lls md5 pca sha softfloat tree
 TESTPROGS-$(HAVE_LZO1X_999_COMPRESS) += lzo
 
 DIRS = arm bfin sh4 x86
diff --git a/libavutil/arm/cpu.h b/libavutil/arm/cpu.h
new file mode 100644
index 0000000000..45ab761406
--- /dev/null
+++ b/libavutil/arm/cpu.h
@@ -0,0 +1,29 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVUTIL_ARM_CPU_H
+#define AVUTIL_ARM_CPU_H
+
+#include "config.h"
+
+int av_get_cpu_flags(void)
+{
+    return HAVE_IWMMXT * AV_CPU_FLAG_IWMMXT;
+}
+
+#endif /* AVUTIL_ARM_CPU_H */
diff --git a/libavutil/avutil.h b/libavutil/avutil.h
index 05e2668ec9..c51a682971 100644
--- a/libavutil/avutil.h
+++ b/libavutil/avutil.h
@@ -40,7 +40,7 @@
 #define AV_VERSION(a, b, c) AV_VERSION_DOT(a, b, c)
 
 #define LIBAVUTIL_VERSION_MAJOR 50
-#define LIBAVUTIL_VERSION_MINOR 25
+#define LIBAVUTIL_VERSION_MINOR 26
 #define LIBAVUTIL_VERSION_MICRO  0
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
diff --git a/libavutil/cpu.c b/libavutil/cpu.c
new file mode 100644
index 0000000000..fb37edb879
--- /dev/null
+++ b/libavutil/cpu.c
@@ -0,0 +1,66 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg 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.
+ *
+ * FFmpeg 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 FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "cpu.h"
+#include "config.h"
+
+#if   ARCH_ARM
+#   include "arm/cpu.h"
+#elif ARCH_PPC
+#   include "ppc/cpu.h"
+#elif ARCH_X86
+#   include "x86/cpu.h"
+#else
+int av_get_cpu_flags(void)
+{
+    return 0;
+}
+#endif
+
+#ifdef TEST
+
+#undef printf
+
+int main(void)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    printf("cpu_flags = 0x%08X\n", cpu_flags);
+    printf("cpu_flags = %s%s%s%s%s%s%s%s%s%s%s%s\n",
+#if   ARCH_ARM
+           cpu_flags & AV_CPU_FLAG_IWMMXT   ? "IWMMXT "     : "",
+#elif ARCH_PPC
+           cpu_flags & AV_CPU_FLAG_ALTIVEC  ? "ALTIVEC "    : "",
+#elif ARCH_X86
+           cpu_flags & AV_CPU_FLAG_MMX      ? "MMX "        : "",
+           cpu_flags & AV_CPU_FLAG_MMX2     ? "MMX2 "       : "",
+           cpu_flags & AV_CPU_FLAG_SSE      ? "SSE "        : "",
+           cpu_flags & AV_CPU_FLAG_SSE2     ? "SSE2 "       : "",
+           cpu_flags & AV_CPU_FLAG_SSE2SLOW ? "SSE2(slow) " : "",
+           cpu_flags & AV_CPU_FLAG_SSE3     ? "SSE3 "       : "",
+           cpu_flags & AV_CPU_FLAG_SSE3SLOW ? "SSE3(slow) " : "",
+           cpu_flags & AV_CPU_FLAG_SSSE3    ? "SSSE3 "      : "",
+           cpu_flags & AV_CPU_FLAG_SSE4     ? "SSE4.1 "     : "",
+           cpu_flags & AV_CPU_FLAG_SSE42    ? "SSE4.2 "     : "",
+           cpu_flags & AV_CPU_FLAG_3DNOW    ? "3DNow "      : "",
+           cpu_flags & AV_CPU_FLAG_3DNOWEXT ? "3DNowExt "   : "");
+#endif
+    return 0;
+}
+
+#endif
diff --git a/libavutil/cpu.h b/libavutil/cpu.h
index 644df3e568..08e82f1d04 100644
--- a/libavutil/cpu.h
+++ b/libavutil/cpu.h
@@ -41,4 +41,9 @@
 #define AV_CPU_FLAG_IWMMXT       0x0100 ///< XScale IWMMXT
 #define AV_CPU_FLAG_ALTIVEC      0x0001 ///< standard
 
+/**
+ * Return the flags which specify extensions supported by the CPU.
+ */
+int av_get_cpu_flags(void);
+
 #endif  /* AVUTIL_CPU_H */
diff --git a/libavcodec/ppc/check_altivec.c b/libavutil/ppc/cpu.h
index 95ca742668..684361c5ff 100644
--- a/libavcodec/ppc/check_altivec.c
+++ b/libavutil/ppc/cpu.h
@@ -16,11 +16,8 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-
-/**
- * @file
- * Check for AltiVec presence.
- */
+#ifndef AVUTIL_PPC_CPU_H
+#define AVUTIL_PPC_CPU_H
 
 #ifdef __APPLE__
 #undef _POSIX_C_SOURCE
@@ -36,14 +33,12 @@
 #endif /* __APPLE__ */
 
 #include "config.h"
-#include "dsputil_altivec.h"
 
 /**
  * This function MAY rely on signal() or fork() in order to make sure AltiVec
  * is present.
  */
-
-int mm_support(void)
+int av_get_cpu_flags(void)
 {
 #if HAVE_ALTIVEC
 #ifdef __AMIGAOS4__
@@ -90,3 +85,4 @@ int mm_support(void)
     return 0;
 }
 
+#endif /* AVUTIL_PPC_CPU_H */
diff --git a/libavcodec/x86/cpuid.c b/libavutil/x86/cpu.h
index 45fac5dd1e..052d2c5477 100644
--- a/libavcodec/x86/cpuid.c
+++ b/libavutil/x86/cpu.h
@@ -20,11 +20,12 @@
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
+#ifndef AVUTIL_X86_CPU_H2
+#define AVUTIL_X86_CPU_H2
+
 #include <stdlib.h>
 #include "libavutil/x86_cpu.h"
-#include "libavcodec/dsputil.h"
-
-#undef printf
+#include "libavutil/cpu.h"
 
 /* ebx saving is necessary for PIC. gcc seems unable to see it alone */
 #define cpuid(index,eax,ebx,ecx,edx)\
@@ -37,7 +38,7 @@
          : "0" (index));
 
 /* Function to test if multimedia instructions are supported...  */
-int mm_support(void)
+int av_get_cpu_flags(void)
 {
     int rval = 0;
     int eax, ebx, ecx, edx;
@@ -121,30 +122,7 @@ int mm_support(void)
         if (rval & AV_CPU_FLAG_SSE3) rval ^= AV_CPU_FLAG_SSE3SLOW|AV_CPU_FLAG_SSE3;
     }
 
-#if 0
-    av_log(NULL, AV_LOG_DEBUG, "%s%s%s%s%s%s%s%s%s%s%s%s\n",
-        (rval&AV_CPU_FLAG_MMX) ? "MMX ":"",
-        (rval&AV_CPU_FLAG_MMX2) ? "MMX2 ":"",
-        (rval&AV_CPU_FLAG_SSE) ? "SSE ":"",
-        (rval&AV_CPU_FLAG_SSE2) ? "SSE2 ":"",
-        (rval&AV_CPU_FLAG_SSE2SLOW) ? "SSE2(slow) ":"",
-        (rval&AV_CPU_FLAG_SSE3) ? "SSE3 ":"",
-        (rval&AV_CPU_FLAG_SSE3SLOW) ? "SSE3(slow) ":"",
-        (rval&AV_CPU_FLAG_SSSE3) ? "SSSE3 ":"",
-        (rval&AV_CPU_FLAG_SSE4) ? "SSE4.1 ":"",
-        (rval&AV_CPU_FLAG_SSE42) ? "SSE4.2 ":"",
-        (rval&AV_CPU_FLAG_3DNOW) ? "3DNow ":"",
-        (rval&AV_CPU_FLAG_3DNOWEXT) ? "3DNowExt ":"");
-#endif
     return rval;
 }
 
-#ifdef TEST
-int main ( void )
-{
-    int mm_flags;
-    mm_flags = mm_support();
-    printf("mm_support = 0x%08X\n",mm_flags);
-    return 0;
-}
-#endif
+#endif /* AVUTIL_X86_CPU_H2 */