[Qemu-commits] [COMMIT 4f4cc0e] audio: use muldiv64 where it makes sense

[Anthony Liguori]

From: malc <address@hidden>

Signed-off-by: malc <address@hidden>

diff --git a/audio/audio.c b/audio/audio.c
index d8e5496..a3e23b2 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -1878,7 +1878,8 @@ static void audio_init (void)
         }
         conf.period.ticks = 1;
     } else {
-        conf.period.ticks = get_ticks_per_sec() / conf.period.hertz;
+        conf.period.ticks =
+            muldiv64 (1, get_ticks_per_sec (), conf.period.hertz);
     }
 
     e = qemu_add_vm_change_state_handler (audio_vm_change_state_handler, s);
diff --git a/audio/audio_template.h b/audio/audio_template.h
index e65d834..70c4a88 100644
--- a/audio/audio_template.h
+++ b/audio/audio_template.h
@@ -556,7 +556,7 @@ uint64_t glue (AUD_get_elapsed_usec_, TYPE) (SW *sw, 
QEMUAudioTimeStamp *ts)
         return 0;
     }
 
-    return (delta * sw->hw->info.freq) / 1000000;
+    return muldiv64 (delta, sw->hw->info.freq, 1000000);
 }
 
 #undef TYPE
diff --git a/audio/noaudio.c b/audio/noaudio.c
index 2f25f17..82272b7 100644
--- a/audio/noaudio.c
+++ b/audio/noaudio.c
@@ -53,7 +53,7 @@ static int no_run_out (HWVoiceOut *hw)
 
     now = qemu_get_clock (vm_clock);
     ticks = now - no->old_ticks;
-    bytes = (ticks * hw->info.bytes_per_second) / get_ticks_per_sec();
+    bytes = muldiv64 (ticks, hw->info.bytes_per_second, get_ticks_per_sec ());
     bytes = audio_MIN (bytes, INT_MAX);
     samples = bytes >> hw->info.shift;
 
@@ -109,7 +109,8 @@ static int no_run_in (HWVoiceIn *hw)
     if (dead) {
         int64_t now = qemu_get_clock (vm_clock);
         int64_t ticks = now - no->old_ticks;
-        int64_t bytes = (ticks * hw->info.bytes_per_second) / 
get_ticks_per_sec();
+        int64_t bytes =
+            muldiv64 (ticks, hw->info.bytes_per_second, get_ticks_per_sec ());
 
         no->old_ticks = now;
         bytes = audio_MIN (bytes, INT_MAX);
diff --git a/audio/wavaudio.c b/audio/wavaudio.c
index 78eb758..e659aa5 100644
--- a/audio/wavaudio.c
+++ b/audio/wavaudio.c
@@ -54,7 +54,8 @@ static int wav_run_out (HWVoiceOut *hw)
     struct st_sample *src;
     int64_t now = qemu_get_clock (vm_clock);
     int64_t ticks = now - wav->old_ticks;
-    int64_t bytes = (ticks * hw->info.bytes_per_second) / get_ticks_per_sec();
+    int64_t bytes =
+        muldiv64 (ticks, hw->info.bytes_per_second, get_ticks_per_sec ());
 
     if (bytes > INT_MAX) {
         samples = INT_MAX >> hw->info.shift;
diff --git a/hw/gus.c b/hw/gus.c
index 543b4ea..c6b98b3 100644
--- a/hw/gus.c
+++ b/hw/gus.c
@@ -156,8 +156,8 @@ static void GUS_callback (void *opaque, int free)
     }
     s->left = samples;
 
-reset:
-    gus_irqgen (&s->emu, (double) (net * 1000000) / s->freq);
+ reset:
+    gus_irqgen (&s->emu, muldiv64 (net, 1000000, s->freq));
 }
 
 int GUS_irqrequest (GUSEmuState *emu, int hwirq, int n)
diff --git a/hw/sb16.c b/hw/sb16.c
index a222e21..8654b7d 100644
--- a/hw/sb16.c
+++ b/hw/sb16.c
@@ -758,8 +758,8 @@ static void complete (SB16State *s)
                 freq = s->freq > 0 ? s->freq : 11025;
                 samples = dsp_get_lohi (s) + 1;
                 bytes = samples << s->fmt_stereo << (s->fmt_bits == 16);
-                ticks = (bytes * get_ticks_per_sec()) / freq;
-                if (ticks < get_ticks_per_sec() / 1024) {
+                ticks = muldiv64 (bytes, get_ticks_per_sec (), freq);
+                if (ticks < get_ticks_per_sec () / 1024) {
                     qemu_irq_raise (s->pic);
                 }
                 else {