audio: add audiodev property to vnc and wav_capture

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Message-id: 8cbc9e865bbf40850c14340fc0549e6ac2d5fe9c.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

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

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);
 
-    s = g_malloc0 (sizeof (*s));
+    if (!as) {
+        monitor_printf(mon, "Audiodev '%s' not found\n", audiodev);
+        return;
+    }
 
-    freq = has_freq ? freq : 44100;
-    bits = has_bits ? bits : 16;
-    nchannels = has_channels ? nchannels : 2;
+    s = g_malloc0 (sizeof (*s));
 
-    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;

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
 

ui/vnc.c

@@ -1224,7 +1224,7 @@ 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");
     }
@@ -3371,6 +3371,9 @@ static QemuOptsList qemu_vnc_opts = {
         },{
             .name = "non-adaptive",
             .type = QEMU_OPT_BOOL,
+        },{
+            .name = "audiodev",
+            .type = QEMU_OPT_STRING,
         },
         { /* end of list */ }
     },
@@ -3808,6 +3811,7 @@ 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");
@@ -3993,6 +3997,15 @@ 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);

ui/vnc.h

@@ -182,6 +182,8 @@ struct VncDisplay
 #ifdef CONFIG_VNC_SASL
     VncDisplaySASL sasl;
 #endif
+
+    AudioState *audio_state;
 };
 
 typedef struct VncTight {