main part of the native protocol

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@31 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/simple.c

@@ -0,0 +1,120 @@
+#include "simple.h"
+#include "polyp.h"
+#include "mainloop.h"
+
+struct pa_simple {
+    struct mainloop *mainloop;
+    struct pa_context *context;
+    struct pa_stream *stream;
+
+    size_t requested;
+    int dead;
+};
+
+static void playback_callback(struct pa_stream *p, size_t length, void *userdata) {
+    struct pa_stream *sp = userdata;
+    assert(p && length && sp);
+
+    sp->requested = length;
+}
+
+struct pa_simple* pa_simple_new(
+    const char *server,
+    const char *name,
+    enum pa_stream_direction dir,
+    const char *dev,
+    const char *stream_name,
+    const struct pa_sample_spec *ss,
+    const struct pa_buffer_attr *attr) {
+    
+    struct pa_simple *p;
+    assert(ss);
+
+    p = malloc(sizeof(struct pa_simple));
+    assert(p);
+    p->context = NULL;
+    p->stream = NULL;
+    p->mainloop = pa_mainloop_new();
+    assert(p->mainloop);
+    p->requested = 0;
+    p->dead = 0;
+
+    if (!(p->context = pa_context_new(pa_mainloop_get_api(p->mainloop), name)))
+        goto fail;
+
+    if (pa_context_connect(c, server, NULL, NULL) < 0)
+        goto fail;
+
+    while (!pa_context_is_ready(c)) {
+        if (pa_context_is_dead(c))
+            goto fail;
+        
+        if (mainloop_iterate(p->mainloop) < 0)
+            goto fail;
+    }
+
+    if (!(p->stream = pa_stream_new(p->context, dir, sink, stream_name, ss, attr, NULL, NULL)))
+        goto fail;
+
+    while (!pa_stream_is_ready(c)) {
+        if (pa_stream_is_dead(c))
+            goto fail;
+
+        if (mainloop_iterate(p->mainloop) < 0)
+            goto fail;
+    }
+
+    pa_stream_set_write_callback(p->stream, playback_callback, p);
+
+    return p;
+    
+fail:
+    pa_simple_free(p);
+    return NULL;
+}
+
+void pa_simple_free(struct pa_simple *s) {
+    assert(s);
+
+    if (s->stream)
+        pa_stream_free(s->stream);
+    
+    if (s->context)
+        pa_context_free(s->context);
+
+    if (s->mainloop)
+        mainloop_free(s->mainloop);
+
+    free(s);
+}
+
+int pa_simple_write(struct pa_simple *s, const void*data, size_t length) {
+    assert(s && data);
+
+    while (length > 0) {
+        size_t l;
+        
+        while (!s->requested) {
+            if (pa_context_is_dead(c))
+                return -1;
+            
+            if (mainloop_iterate(s->mainloop) < 0)
+                return -1;
+        }
+
+        l = length;
+        if (l > s->requested)
+            l = s->requested;
+
+        pa_stream_write(s->stream, data, l);
+        data += l;
+        length -= l;
+        s->requested = -l;
+    }
+
+    return 0;
+}
+
+int pa_simple_read(struct pa_simple *s, const void*data, size_t length) {
+    assert(0);
+}