[Qemu-devel] [PATCH v3 03/14] audio: add audiodev property to vnc and wav_capture

[Kővágó, Zoltán]

Signed-off-by: Kővágó, Zoltán <address@hidden>
---

Notes:
    Changes from v2:
    
    * audiodev parameter for wavcapture is now mandatory.
    * removed some unnecessary qdict_haskey calls from hmp_wavcapture

 ui/vnc.h        |  2 ++
 monitor/misc.c  | 22 +++++++++++-----------
 ui/vnc.c        | 15 ++++++++++++++-
 hmp-commands.hx | 11 ++++++-----
 qemu-options.hx |  6 ++++++
 5 files changed, 39 insertions(+), 17 deletions(-)

diff --git a/ui/vnc.h b/ui/vnc.h
index 2f84db3142..6f54653455 100644
--- a/ui/vnc.h
+++ b/ui/vnc.h
@@ -183,6 +183,8 @@ struct VncDisplay
 #ifdef CONFIG_VNC_SASL
     VncDisplaySASL sasl;
 #endif
+
+    AudioState *audio_state;
 };
 
 typedef struct VncTight {
diff --git a/monitor/misc.c b/monitor/misc.c
index e393333a0e..bdf857555f 100644
--- a/monitor/misc.c
+++ b/monitor/misc.c
@@ -1142,21 +1142,21 @@ static void hmp_stopcapture(Monitor *mon, const QDict 
*qdict)
 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
 {
     const char *path = qdict_get_str(qdict, "path");
-    int has_freq = qdict_haskey(qdict, "freq");
-    int freq = qdict_get_try_int(qdict, "freq", -1);
-    int has_bits = qdict_haskey(qdict, "bits");
-    int bits = qdict_get_try_int(qdict, "bits", -1);
-    int has_channels = qdict_haskey(qdict, "nchannels");
-    int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
+    int freq = qdict_get_try_int(qdict, "freq", 44100);
+    int bits = qdict_get_try_int(qdict, "bits", 16);
+    int nchannels = qdict_get_try_int(qdict, "nchannels", 2);
+    const char *audiodev = qdict_get_str(qdict, "audiodev");
     CaptureState *s;
+    AudioState *as = audio_state_by_name(audiodev);
+
+    if (!as) {
+        monitor_printf(mon, "Audiodev '%s' not found\n", audiodev);
+        return;
+    }
 
     s = g_malloc0 (sizeof (*s));
 
-    freq = has_freq ? freq : 44100;
-    bits = has_bits ? bits : 16;
-    nchannels = has_channels ? nchannels : 2;
-
-    if (wav_start_capture(NULL, s, path, freq, bits, nchannels)) {
+    if (wav_start_capture(as, s, path, freq, bits, nchannels)) {
         monitor_printf(mon, "Failed to add wave capture\n");
         g_free (s);
         return;
diff --git a/ui/vnc.c b/ui/vnc.c
index 140f364dda..24f9be5b5d 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -1222,7 +1222,7 @@ static void audio_add(VncState *vs)
     ops.destroy = audio_capture_destroy;
     ops.capture = audio_capture;
 
-    vs->audio_cap = AUD_add_capture(NULL, &vs->as, &ops, vs);
+    vs->audio_cap = AUD_add_capture(vs->vd->audio_state, &vs->as, &ops, vs);
     if (!vs->audio_cap) {
         error_report("Failed to add audio capture");
     }
@@ -3369,6 +3369,9 @@ static QemuOptsList qemu_vnc_opts = {
         },{
             .name = "non-adaptive",
             .type = QEMU_OPT_BOOL,
+        },{
+            .name = "audiodev",
+            .type = QEMU_OPT_STRING,
         },
         { /* end of list */ }
     },
@@ -3806,6 +3809,7 @@ void vnc_display_open(const char *id, Error **errp)
     const char *saslauthz;
     int lock_key_sync = 1;
     int key_delay_ms;
+    const char *audiodev;
 
     if (!vd) {
         error_setg(errp, "VNC display not active");
@@ -3991,6 +3995,15 @@ void vnc_display_open(const char *id, Error **errp)
     }
     vd->ledstate = 0;
 
+    audiodev = qemu_opt_get(opts, "audiodev");
+    if (audiodev) {
+        vd->audio_state = audio_state_by_name(audiodev);
+        if (!vd->audio_state) {
+            error_setg(errp, "Audiodev '%s' not found", audiodev);
+            goto fail;
+        }
+    }
+
     device_id = qemu_opt_get(opts, "display");
     if (device_id) {
         int head = qemu_opt_get_number(opts, "head", 0);
diff --git a/hmp-commands.hx b/hmp-commands.hx
index bfa5681dd2..cfcc044ce4 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -819,16 +819,17 @@ ETEXI
 
     {
         .name       = "wavcapture",
-        .args_type  = "path:F,freq:i?,bits:i?,nchannels:i?",
-        .params     = "path [frequency [bits [channels]]]",
+        .args_type  = "path:F,audiodev:s,freq:i?,bits:i?,nchannels:i?",
+        .params     = "path audiodev [frequency [bits [channels]]]",
         .help       = "capture audio to a wave file (default frequency=44100 
bits=16 channels=2)",
         .cmd        = hmp_wavcapture,
     },
 STEXI
-@item wavcapture @var{filename} [@var{frequency} [@var{bits} [@var{channels}]]]
+@item wavcapture @var{filename} @var{audiodev} [@var{frequency} [@var{bits} 
[@var{channels}]]]
 @findex wavcapture
-Capture audio into @var{filename}. Using sample rate @var{frequency}
-bits per sample @var{bits} and number of channels @var{channels}.
+Capture audio into @var{filename} from @var{audiodev}, using sample rate
+@var{frequency} bits per sample @var{bits} and number of channels
+@var{channels}.
 
 Defaults:
 @itemize @minus
diff --git a/qemu-options.hx b/qemu-options.hx
index 9621e934c0..a308e5f5aa 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1978,6 +1978,12 @@ can help the device and guest to keep up and not lose 
events in case
 events are arriving in bulk.  Possible causes for the latter are flaky
 network connections, or scripts for automated testing.
 
+@item audiodev=@var{audiodev}
+
+Use the specified @var{audiodev} when the VNC client requests audio
+transmission. When not using an -audiodev argument, this option must
+be omitted, otherwise is must be present and specify a valid audiodev.
+
 @end table
 ETEXI
 
-- 
2.22.0