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hda-codec: fix playback rate control

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Since commit 1930616b98 "audio: make mixeng optional" the
function hda_audio_output_cb can no longer assume the function
parameter avail contains the free buffer size. With the playback
mixing-engine turned off this leads to a broken playback rate
control and playback buffer drops in regular intervals.

This patch moves down the rate calculation, so the correct
buffer fill level is used for the calculation.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200104091122.13971-1-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Volker Rümelin 2020-01-04 10:11:18 +01:00 committed by Gerd Hoffmann
parent f0dcfddece
commit df016a1998
1 changed files with 2 additions and 2 deletions
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4
hw/audio/hda-codec.c
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@ -338,8 +338,6 @@ static void hda_audio_output_cb(void *opaque, int avail)
return;
}
hda_timer_sync_adjust(st, (wpos - rpos) - to_transfer - (B_SIZE >> 1));
while (to_transfer) {
uint32_t start = (uint32_t) (rpos & B_MASK);
uint32_t chunk = (uint32_t) MIN(B_SIZE - start, to_transfer);
@ -351,6 +349,8 @@ static void hda_audio_output_cb(void *opaque, int avail)
break;
}
}
hda_timer_sync_adjust(st, (wpos - rpos) - (B_SIZE >> 1));
}
static void hda_audio_compat_input_cb(void *opaque, int avail)