On Sun, 14 Apr 2013, Diego Biurrun wrote:

LGTM in general, mostly minor comments below.

On Wed, Apr 10, 2013 at 07:24:31PM +0300, Martin Storsjö wrote:
--- a/libavcodec/hpeldsp.c
+++ b/libavcodec/hpeldsp.c
@@ -54,5 +54,6 @@ av_cold void ff_hpeldsp_init(HpelDSPContext *c, int flags)
     hpel_funcs(avg, [3],  2);
     hpel_funcs(avg_no_rnd,, 16);

+    if (ARCH_PPC)        ff_hpeldsp_init_ppc   (c, flags);
     if (ARCH_X86)        ff_hpeldsp_init_x86   (c, flags);

Break the line and eliminate the odd spacing please.

Fixed locally already (and should have been part of the branch on github I showed you).


--- a/libavcodec/hpeldsp.h
+++ b/libavcodec/hpeldsp.h
@@ -94,6 +94,7 @@ typedef struct HpelDSPContext {

 void ff_hpeldsp_init(HpelDSPContext *c, int flags);

+void ff_hpeldsp_init_ppc(HpelDSPContext* c, int flags);
 void ff_hpeldsp_init_x86(HpelDSPContext* c, int flags);

*c

Also fixed locally already

--- a/libavcodec/ppc/dsputil_altivec.c
+++ b/libavcodec/ppc/dsputil_altivec.c
@@ -1367,16 +956,6 @@ av_cold void ff_dsputil_init_altivec(DSPContext *c, 
AVCodecContext *avctx)
     if (!high_bit_depth) {
     c->get_pixels = get_pixels_altivec;
     c->clear_block = clear_block_altivec;
-    c->put_pixels_tab[0][0] = ff_put_pixels16_altivec;
-    /* the two functions do the same thing, so use the same code */
-    c->put_no_rnd_pixels_tab[0][0] = ff_put_pixels16_altivec;
-    c->avg_pixels_tab[0][0] = ff_avg_pixels16_altivec;
-    c->avg_pixels_tab[1][0] = avg_pixels8_altivec;
-    c->avg_pixels_tab[1][3] = avg_pixels8_xy2_altivec;
-    c->put_pixels_tab[1][3] = put_pixels8_xy2_altivec;
-    c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_altivec;
-    c->put_pixels_tab[0][3] = put_pixels16_xy2_altivec;
-    c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_altivec;

The comment is dropped; not sure if we need to care.

Not if we reorder the lines as you suggested below


--- /dev/null
+++ b/libavcodec/ppc/hpeldsp_altivec.c
@@ -0,0 +1,464 @@
+
+void ff_hpeldsp_init_ppc(HpelDSPContext* c, int flags)

*c

Fixed locally already

+{
+#if HAVE_ALTIVEC
+    int mm_flags = av_get_cpu_flags();
+
+    if (mm_flags & AV_CPU_FLAG_ALTIVEC) {
+        c->put_pixels_tab[0][0] = ff_put_pixels16_altivec;
+        c->put_no_rnd_pixels_tab[0][0] = ff_put_pixels16_altivec;
+        c->avg_pixels_tab[0][0] = ff_avg_pixels16_altivec;
+        c->avg_pixels_tab[1][0] = avg_pixels8_altivec;
+        c->avg_pixels_tab[1][3] = avg_pixels8_xy2_altivec;
+        c->put_pixels_tab[1][3] = put_pixels8_xy2_altivec;
+        c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_altivec;
+        c->put_pixels_tab[0][3] = put_pixels16_xy2_altivec;
+        c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_altivec;

I think the following would be more readable, with or without the
empty lines:

      c->avg_pixels_tab[0][0]        = ff_avg_pixels16_altivec;
      c->avg_pixels_tab[1][0]        = avg_pixels8_altivec;
      c->avg_pixels_tab[1][3]        = avg_pixels8_xy2_altivec;

      c->put_pixels_tab[0][0]        = ff_put_pixels16_altivec;
      c->put_pixels_tab[0][3]        = put_pixels16_xy2_altivec;
      c->put_pixels_tab[1][3]        = put_pixels8_xy2_altivec;

      c->put_no_rnd_pixels_tab[0][0] = ff_put_pixels16_altivec;
      c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_altivec;
      c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_altivec;

Indeed, that does look more straightforward - reordered.

// Martin
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