[Qemu-devel] [PULL 17/20] dsoundaudio: remove *_retries kludges

[Gerd Hoffmann <kraxel@redhat.com>]

From: Kővágó, Zoltán <dirty.ice.hu@gmail.com>

According to MSDN this may happen when the window is not in the foreground, but
the default is 1 since a long time (which means no retries), so it should be ok.
I've found no problems during testing it on Windows 7 and wine, so this was
probably only the case with some old Windows versions.

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 audio/dsound_template.h | 35 +++++--------------------
 audio/dsoundaudio.c     | 68 ++++++++++---------------------------------------
 2 files changed, 20 insertions(+), 83 deletions(-)

diff --git a/audio/dsound_template.h b/audio/dsound_template.h
index 85ba858..b439f33 100644
--- a/audio/dsound_template.h
+++ b/audio/dsound_template.h
@@ -72,48 +72,27 @@ static int glue (dsound_lock_, TYPE) (
     )
 {
     HRESULT hr;
-    int i;
     LPVOID p1 = NULL, p2 = NULL;
     DWORD blen1 = 0, blen2 = 0;
     DWORD flag;
-    DSoundConf *conf = &s->conf;
 
 #ifdef DSBTYPE_IN
     flag = entire ? DSCBLOCK_ENTIREBUFFER : 0;
 #else
     flag = entire ? DSBLOCK_ENTIREBUFFER : 0;
 #endif
-    for (i = 0; i < conf->lock_retries; ++i) {
-        hr = glue (IFACE, _Lock) (
-            buf,
-            pos,
-            len,
-            &p1,
-            &blen1,
-            &p2,
-            &blen2,
-            flag
-            );
+    hr = glue(IFACE, _Lock)(buf, pos, len, &p1, &blen1, &p2, &blen2, flag);
 
-        if (FAILED (hr)) {
+    if (FAILED (hr)) {
 #ifndef DSBTYPE_IN
-            if (hr == DSERR_BUFFERLOST) {
-                if (glue (dsound_restore_, TYPE) (buf, s)) {
-                    dsound_logerr (hr, "Could not lock " NAME "\n");
-                    goto fail;
-                }
-                continue;
+        if (hr == DSERR_BUFFERLOST) {
+            if (glue (dsound_restore_, TYPE) (buf, s)) {
+                dsound_logerr (hr, "Could not lock " NAME "\n");
             }
-#endif
-            dsound_logerr (hr, "Could not lock " NAME "\n");
             goto fail;
         }
-
-        break;
-    }
-
-    if (i == conf->lock_retries) {
-        dolog ("%d attempts to lock " NAME " failed\n", i);
+#endif
+        dsound_logerr (hr, "Could not lock " NAME "\n");
         goto fail;
     }
 
diff --git a/audio/dsoundaudio.c b/audio/dsoundaudio.c
index c8b09e2..28b98bf 100644
--- a/audio/dsoundaudio.c
+++ b/audio/dsoundaudio.c
@@ -42,9 +42,6 @@
 /* #define DEBUG_DSOUND */
 
 typedef struct {
-    int lock_retries;
-    int restore_retries;
-    int getstatus_retries;
     int set_primary;
     int bufsize_in;
     int bufsize_out;
@@ -274,26 +271,14 @@ static void print_wave_format (WAVEFORMATEX *wfx)
 static int dsound_restore_out (LPDIRECTSOUNDBUFFER dsb, dsound *s)
 {
     HRESULT hr;
-    int i;
 
-    for (i = 0; i < s->conf.restore_retries; ++i) {
-        hr = IDirectSoundBuffer_Restore (dsb);
+    hr = IDirectSoundBuffer_Restore (dsb);
 
-        switch (hr) {
-        case DS_OK:
-            return 0;
-
-        case DSERR_BUFFERLOST:
-            continue;
-
-        default:
-            dsound_logerr (hr, "Could not restore playback buffer\n");
-            return -1;
-        }
+    if (hr != DS_OK) {
+        dsound_logerr (hr, "Could not restore playback buffer\n");
+        return -1;
     }
-
-    dolog ("%d attempts to restore playback buffer failed\n", i);
-    return -1;
+    return 0;
 }
 
 #include "dsound_template.h"
@@ -305,22 +290,16 @@ static int dsound_get_status_out (LPDIRECTSOUNDBUFFER dsb, DWORD *statusp,
                                   dsound *s)
 {
     HRESULT hr;
-    int i;
 
-    for (i = 0; i < s->conf.getstatus_retries; ++i) {
-        hr = IDirectSoundBuffer_GetStatus (dsb, statusp);
-        if (FAILED (hr)) {
-            dsound_logerr (hr, "Could not get playback buffer status\n");
-            return -1;
-        }
+    hr = IDirectSoundBuffer_GetStatus (dsb, statusp);
+    if (FAILED (hr)) {
+        dsound_logerr (hr, "Could not get playback buffer status\n");
+        return -1;
+    }
 
-        if (*statusp & DSERR_BUFFERLOST) {
-            if (dsound_restore_out (dsb, s)) {
-                return -1;
-            }
-            continue;
-        }
-        break;
+    if (*statusp & DSERR_BUFFERLOST) {
+        dsound_restore_out(dsb, s);
+        return -1;
     }
 
     return 0;
@@ -844,9 +823,6 @@ static int dsound_run_in (HWVoiceIn *hw)
 }
 
 static DSoundConf glob_conf = {
-    .lock_retries       = 1,
-    .restore_retries    = 1,
-    .getstatus_retries  = 1,
     .set_primary        = 0,
     .bufsize_in         = 16384,
     .bufsize_out        = 16384,
@@ -959,24 +935,6 @@ static void *dsound_audio_init (void)
 
 static struct audio_option dsound_options[] = {
     {
-        .name  = "LOCK_RETRIES",
-        .tag   = AUD_OPT_INT,
-        .valp  = &glob_conf.lock_retries,
-        .descr = "Number of times to attempt locking the buffer"
-    },
-    {
-        .name  = "RESTOURE_RETRIES",
-        .tag   = AUD_OPT_INT,
-        .valp  = &glob_conf.restore_retries,
-        .descr = "Number of times to attempt restoring the buffer"
-    },
-    {
-        .name  = "GETSTATUS_RETRIES",
-        .tag   = AUD_OPT_INT,
-        .valp  = &glob_conf.getstatus_retries,
-        .descr = "Number of times to attempt getting status of the buffer"
-    },
-    {
         .name  = "SET_PRIMARY",
         .tag   = AUD_OPT_BOOL,
         .valp  = &glob_conf.set_primary,
-- 
1.8.3.1