include hw description gathered from /dev/sndstat in sink/source description string

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@556 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/modules/module-oss.c

@@ -287,7 +287,10 @@ int pa__init(pa_core *c, pa_module*m) {
     int record = 1, playback = 1;
     pa_sample_spec ss;
     pa_modargs *ma = NULL;
-    assert(c && m);
+    char hwdesc[64];
+    
+    assert(c);
+    assert(m);
 
     if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
         pa_log(__FILE__": failed to parse module arguments.\n");
@@ -322,6 +325,11 @@ int pa__init(pa_core *c, pa_module*m) {
     if ((fd = pa_oss_open(p = pa_modargs_get_value(ma, "device", DEFAULT_DEVICE), &mode, NULL)) < 0)
         goto fail;
 
+    if (pa_oss_get_hw_description(p, hwdesc, sizeof(hwdesc)) >= 0)
+        pa_log_info(__FILE__": hardware name is '%s'.\n", hwdesc);
+    else
+        hwdesc[0] = 0;
+    
     pa_log_info(__FILE__": device opened in %s mode.\n", mode == O_WRONLY ? "O_WRONLY" : (mode == O_RDONLY ? "O_RDONLY" : "O_RDWR"));
 
     if (nfrags >= 2 && frag_size >= 1)
@@ -361,7 +369,11 @@ int pa__init(pa_core *c, pa_module*m) {
         u->source->notify = source_notify_cb;
         u->source->get_latency = source_get_latency_cb;
         pa_source_set_owner(u->source, m);
-        u->source->description = pa_sprintf_malloc("Open Sound System PCM on '%s'", p);
+        u->source->description = pa_sprintf_malloc("Open Sound System PCM on '%s'%s%s%s",
+                                                   p,
+                                                   hwdesc[0] ? " (" : "",
+                                                   hwdesc[0] ? hwdesc : "",
+                                                   hwdesc[0] ? ")" : "");
     } else
         u->source = NULL;
 
@@ -373,7 +385,11 @@ int pa__init(pa_core *c, pa_module*m) {
         u->sink->set_hw_volume = sink_set_hw_volume;
         u->sink->userdata = u;
         pa_sink_set_owner(u->sink, m);
-        u->sink->description = pa_sprintf_malloc("Open Sound System PCM on '%s'", p);
+        u->sink->description = pa_sprintf_malloc("Open Sound System PCM on '%s'%s%s%s",
+                                                 p,
+                                                 hwdesc[0] ? " (" : "",
+                                                 hwdesc[0] ? hwdesc : "",
+                                                 hwdesc[0] ? ")" : "");
     } else
         u->sink = NULL;
 

src/modules/oss-util.c

@@ -202,3 +202,72 @@ int pa_oss_set_volume(int fd, const pa_sample_spec *ss, const pa_cvolume *volume
     pa_log_debug(__FILE__": Wrote mixer settings: %s\n", pa_cvolume_snprint(cv, sizeof(cv), volume));
     return 0;
 }
+
+int pa_oss_get_hw_description(const char *dev, char *name, size_t l) {
+    FILE *f;
+    const char *e = NULL;
+    int n, r = -1;
+    int b = 0;
+
+    if (strncmp(dev, "/dev/dsp", 8) == 0)
+        e = dev+8;
+    else if (strncmp(dev, "/dev/adsp", 9) == 0)
+        e = dev+9;
+    else
+        return -1;
+
+    if (*e == 0)
+        n = 0;
+    else if (*e >= '0' && *e <= '9' && *(e+1) == 0)
+        n = *e - '0';
+    else
+        return -1;
+    
+    if (!(f = fopen("/dev/sndstat", "r")) &&
+        !(f = fopen("/proc/sndstat", "r")) &&
+        !(f = fopen("/proc/asound/oss/sndstat", "r"))) {
+
+        if (errno != ENOENT)
+            pa_log_warn(__FILE__": failed to open OSS sndstat device: %s\n", strerror(errno));
+
+        return -1;
+    }
+
+    while (!feof(f)) {
+        char line[64];
+        int device;
+    
+        if (!fgets(line, sizeof(line), f))
+            break;
+
+        line[strcspn(line, "\r\n")] = 0;
+
+        if (!b) {
+            b = strcmp(line, "Audio devices:") == 0;
+            continue;
+        }
+
+        if (line[0] == 0)
+            break;
+        
+        if (sscanf(line, "%i: ", &device) != 1)
+            continue;
+
+        if (device == n) {
+            char *k = strchr(line, ':');
+            assert(k);
+            k++;
+            k += strspn(k, " ");
+
+            if (pa_endswith(k, " (DUPLEX)"))
+                k[strlen(k)-9] = 0;
+            
+            pa_strlcpy(name, k, l);
+            r = 0;
+            break;
+        }
+    }
+
+    fclose(f);
+    return r;
+}

src/modules/oss-util.h

@@ -33,4 +33,6 @@ int pa_oss_set_fragments(int fd, int frags, int frag_size);
 int pa_oss_get_volume(int fd, const pa_sample_spec *ss, pa_cvolume *volume);
 int pa_oss_set_volume(int fd, const pa_sample_spec *ss, const pa_cvolume *volume);
 
+int pa_oss_get_hw_description(const char *dev, char *name, size_t l);
+
 #endif