IWMMXT configure support + runtime selection patch by (Gildas Bazin, gbazin : altern org)

Originally committed as revision 4409 to svn://svn.ffmpeg.org/ffmpeg/trunk

5 files changed, 29 insertions, 4 deletions

diff --git a/libavcodec/armv4l/dsputil_arm.c b/libavcodec/armv4l/dsputil_arm.c
index 4ba6280963..0195c3ca6f 100644
--- a/libavcodec/armv4l/dsputil_arm.c
+++ b/libavcodec/armv4l/dsputil_arm.c
@@ -240,9 +240,7 @@ void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx)
     c->put_no_rnd_pixels_tab[1][2] = put_no_rnd_pixels8_y2_arm; //OK
 /*     c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_arm;//NG */
 
-#if 1
 #ifdef HAVE_IWMMXT
     dsputil_init_iwmmxt(c, avctx);
 #endif
-#endif
 }
diff --git a/libavcodec/armv4l/dsputil_iwmmxt.c b/libavcodec/armv4l/dsputil_iwmmxt.c
index 6e2465d7c8..99a55e7905 100644
--- a/libavcodec/armv4l/dsputil_iwmmxt.c
+++ b/libavcodec/armv4l/dsputil_iwmmxt.c
@@ -126,8 +126,26 @@ static void nop(uint8_t *block, const uint8_t *pixels, int line_size, int h)
     return;
 }
 
+int mm_flags; /* multimedia extension flags */
+
+int mm_support(void)
+{
+    return 0; /* TODO, implement proper detection */
+}
+
 void dsputil_init_iwmmxt(DSPContext* c, AVCodecContext *avctx)
 {
+    mm_flags = mm_support();
+
+    if (avctx->dsp_mask) {
+	if (avctx->dsp_mask & FF_MM_FORCE)
+	    mm_flags |= (avctx->dsp_mask & 0xffff);
+	else
+	    mm_flags &= ~(avctx->dsp_mask & 0xffff);
+    }
+
+    if (!(mm_flags & MM_IWMMXT)) return;
+
     c->add_pixels_clamped = add_pixels_clamped_iwmmxt;
 
     c->put_pixels_tab[0][0] = put_pixels16_iwmmxt;
diff --git a/libavcodec/armv4l/mpegvideo_iwmmxt.c b/libavcodec/armv4l/mpegvideo_iwmmxt.c
index 0f4c99e3ac..9724de8c4c 100644
--- a/libavcodec/armv4l/mpegvideo_iwmmxt.c
+++ b/libavcodec/armv4l/mpegvideo_iwmmxt.c
@@ -90,6 +90,8 @@ static void dct_unquantize_h263_inter_iwmmxt(MpegEncContext *s,
 
 void MPV_common_init_iwmmxt(MpegEncContext *s)
 {
+    if (!(mm_flags & MM_IWMMXT)) return;
+
     s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_iwmmxt;
 #if 0
     s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_iwmmxt;
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 6f644f6493..c6ebbb190d 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -17,7 +17,7 @@ extern "C" {
 
 #define FFMPEG_VERSION_INT     0x000409
 #define FFMPEG_VERSION         "0.4.9-pre1"
-#define LIBAVCODEC_BUILD       4756
+#define LIBAVCODEC_BUILD       4757
 
 #define LIBAVCODEC_VERSION_INT FFMPEG_VERSION_INT
 #define LIBAVCODEC_VERSION     FFMPEG_VERSION
@@ -1193,7 +1193,7 @@ typedef struct AVCodecContext {
 #define FF_IDCT_SIMPLEARM    10
 #define FF_IDCT_H264         11
 #define FF_IDCT_VP3          12
-#define FP_IDCT_IPP          13
+#define FF_IDCT_IPP          13
 
     /**
      * slice count.
@@ -1236,6 +1236,9 @@ typedef struct AVCodecContext {
 #define FF_MM_SSE2	0x0010 /* PIV SSE2 functions */
 #define FF_MM_3DNOWEXT	0x0020 /* AMD 3DNowExt */
 #endif /* HAVE_MMX */
+#ifdef HAVE_IWMMXT
+#define FF_MM_IWMMXT	0x0100 /* XScale IWMMXT */
+#endif /* HAVE_IWMMXT */
 
     /**
      * bits per sample/pixel from the demuxer (needed for huffyuv).
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index b9de38648b..cad32660db 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -432,6 +432,10 @@ void dsputil_init_pix_mmx(DSPContext* c, AVCodecContext *avctx);
 #define __align8 __attribute__ ((aligned (4)))
 #define STRIDE_ALIGN 4
 
+#define MM_IWMMXT    0x0100 /* XScale IWMMXT */
+
+extern int mm_flags;
+
 void dsputil_init_armv4l(DSPContext* c, AVCodecContext *avctx);
 
 #elif defined(HAVE_MLIB)