[PATCH 3/9] audio/spiceaudio: always rate limit playback stream

[Volker Rümelin]

The playback rate with the spiceaudio backend is currently too
fast if there's no spice client connected or the spice client
can't play audio. Rate limit the audio playback stream in all
cases. To calculate the rate correctly the limiter has to know
the maximum buffer size.

Fixes: 8c198ff065 ("spiceaudio: port to the new audio backend api")
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
---
 audio/audio.c      |  3 ++-
 audio/spiceaudio.c | 10 ++++------
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/audio/audio.c b/audio/audio.c
index ad3f57b4c4..ba52259050 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -1089,7 +1089,8 @@ static size_t audio_pcm_hw_run_out(HWVoiceOut *hw, size_t 
live)
     size_t clipped = 0;
 
     while (live) {
-        size_t size, decr, proc;
+        size_t size = live * hw->info.bytes_per_frame;
+        size_t decr, proc;
         void *buf = hw->pcm_ops->get_buffer_out(hw, &size);
 
         if (size == 0) {
diff --git a/audio/spiceaudio.c b/audio/spiceaudio.c
index c8d81ba442..c062742622 100644
--- a/audio/spiceaudio.c
+++ b/audio/spiceaudio.c
@@ -130,13 +130,11 @@ static void *line_out_get_buffer(HWVoiceOut *hw, size_t 
*size)
     }
 
     if (out->frame) {
-        *size = audio_rate_get_bytes(
-            &hw->info, &out->rate,
-            (out->fsize - out->fpos) * hw->info.bytes_per_frame);
-    } else {
-        audio_rate_start(&out->rate);
-        *size = LINE_OUT_SAMPLES << 2;
+        *size = MIN((out->fsize - out->fpos) << 2, *size);
     }
+
+    *size = audio_rate_get_bytes(&hw->info, &out->rate, *size);
+
     return out->frame + out->fpos;
 }
 
-- 
2.26.2