1 files changed, 116 insertions, 46 deletions

diff --git a/src/protocol-simple.c b/src/protocol-simple.c
index 91eab59a..3e2e7fda 100644
--- a/src/protocol-simple.c
+++ b/src/protocol-simple.c
@@ -18,6 +18,12 @@ struct connection {
     struct pa_source_output *source_output;
     struct pa_client *client;
     struct pa_memblockq *input_memblockq, *output_memblockq;
+    void *fixed_source;
+
+    struct {
+        struct pa_memblock *current_memblock;
+        size_t memblock_index, fragment_size;
+    } playback;
 };
 
 struct pa_protocol_simple {
@@ -29,13 +35,17 @@ struct pa_protocol_simple {
 };
 
 #define PLAYBACK_BUFFER_SECONDS (.5)
+#define PLAYBACK_BUFFER_FRAGMENTS (10)
 #define RECORD_BUFFER_SECONDS (5)
+#define RECORD_BUFFER_FRAGMENTS (100)
 
 static void connection_free(struct connection *c) {
     assert(c);
 
     pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
 
+    if (c->playback.current_memblock)
+        pa_memblock_unref(c->playback.current_memblock);
     if (c->sink_input)
         pa_sink_input_free(c->sink_input);
     if (c->source_output)
@@ -48,34 +58,49 @@ static void connection_free(struct connection *c) {
         pa_memblockq_free(c->input_memblockq);
     if (c->output_memblockq)
         pa_memblockq_free(c->output_memblockq);
+    if (c->fixed_source)
+        c->protocol->core->mainloop->cancel_fixed(c->protocol->core->mainloop, c->fixed_source);
     free(c);
 }
+
 static int do_read(struct connection *c) {
     struct pa_memchunk chunk;
     ssize_t r;
     size_t l;
 
-    if (!pa_iochannel_is_readable(c->io))
-        return 0;
-    
     if (!c->sink_input || !(l = pa_memblockq_missing(c->input_memblockq)))
         return 0;
 
-    chunk.memblock = pa_memblock_new(l);
-    assert(chunk.memblock);
+    if (l > c->playback.fragment_size)
+        l = c->playback.fragment_size;
 
-    if ((r = pa_iochannel_read(c->io, chunk.memblock->data, l)) <= 0) {
-        fprintf(stderr, "read(): %s\n", r == 0 ? "EOF" : strerror(errno));
-        pa_memblock_unref(chunk.memblock);
+    if (c->playback.current_memblock) 
+        if (c->playback.current_memblock->length - c->playback.memblock_index < l) {
+            pa_memblock_unref(c->playback.current_memblock);
+            c->playback.current_memblock = NULL;
+            c->playback.memblock_index = 0;
+        }
+
+    if (!c->playback.current_memblock) {
+        c->playback.current_memblock = pa_memblock_new(c->playback.fragment_size*2);
+        assert(c->playback.current_memblock && c->playback.current_memblock->length >= l);
+        c->playback.memblock_index = 0;
+    }
+    
+    if ((r = pa_iochannel_read(c->io, c->playback.current_memblock->data+c->playback.memblock_index, l)) <= 0) {
+        fprintf(stderr, __FILE__": read() failed: %s\n", r == 0 ? "EOF" : strerror(errno));
         return -1;
     }
 
-    chunk.memblock->length = chunk.length = r;
-    chunk.index = 0;
+    chunk.memblock = c->playback.current_memblock;
+    chunk.index = c->playback.memblock_index;
+    chunk.length = r;
+    assert(chunk.memblock);
 
+    c->playback.memblock_index += r;
+    
     assert(c->input_memblockq);
     pa_memblockq_push_align(c->input_memblockq, &chunk, 0);
-    pa_memblock_unref(chunk.memblock);
     assert(c->sink_input);
     pa_sink_notify(c->sink_input->sink);
     
@@ -86,29 +111,51 @@ static int do_write(struct connection *c) {
     struct pa_memchunk chunk;
     ssize_t r;
 
-    if (!pa_iochannel_is_writable(c->io))
-        return 0;
-    
     if (!c->source_output)
         return 0;    
 
     assert(c->output_memblockq);
     if (pa_memblockq_peek(c->output_memblockq, &chunk) < 0)
         return 0;
-        
+    
     assert(chunk.memblock && chunk.length);
     
     if ((r = pa_iochannel_write(c->io, chunk.memblock->data+chunk.index, chunk.length)) < 0) {
-        fprintf(stderr, "write(): %s\n", strerror(errno));
         pa_memblock_unref(chunk.memblock);
+        fprintf(stderr, "write(): %s\n", strerror(errno));
         return -1;
     }
     
     pa_memblockq_drop(c->output_memblockq, r);
     pa_memblock_unref(chunk.memblock);
+    
     return 0;
 }
 
+
+static void do_work(struct connection *c) {
+    assert(c);
+
+    assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->enable_fixed);
+    c->protocol->core->mainloop->enable_fixed(c->protocol->core->mainloop, c->fixed_source, 0);
+
+    if (pa_iochannel_is_hungup(c->io))
+        goto fail;
+    
+    if (pa_iochannel_is_writable(c->io))
+        if (do_write(c) < 0)
+            goto fail;
+    
+    if (pa_iochannel_is_readable(c->io))
+        if (do_read(c) < 0)
+            goto fail;
+
+    return;
+
+fail:
+    connection_free(c);
+}
+
 /*** sink_input callbacks ***/
 
 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
@@ -127,9 +174,10 @@ static void sink_input_drop_cb(struct pa_sink_input *i, size_t length) {
     assert(i && c && length);
 
     pa_memblockq_drop(c->input_memblockq, length);
-    
-    if (do_read(c) < 0)
-        connection_free(c);
+
+    /* do something */
+    assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->enable_fixed);
+    c->protocol->core->mainloop->enable_fixed(c->protocol->core->mainloop, c->fixed_source, 1);
 }
 
 static void sink_input_kill_cb(struct pa_sink_input *i) {
@@ -152,8 +200,9 @@ static void source_output_push_cb(struct pa_source_output *o, const struct pa_me
 
     pa_memblockq_push(c->output_memblockq, chunk, 0);
 
-    if (do_write(c) < 0)
-        connection_free(c);
+    /* do something */
+    assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->enable_fixed);
+    c->protocol->core->mainloop->enable_fixed(c->protocol->core->mainloop, c->fixed_source, 1);
 }
 
 static void source_output_kill_cb(struct pa_source_output *o) {
@@ -174,11 +223,19 @@ static void io_callback(struct pa_iochannel*io, void *userdata) {
     struct connection *c = userdata;
     assert(io && c && c->io == io);
 
-    if (do_read(c) < 0 || do_write(c) < 0)
-        connection_free(c);
+    do_work(c);
 }
 
-/*** socket_server callbacks */
+/*** fixed callback ***/
+
+void fixed_callback(struct pa_mainloop_api*a, void *id, void *userdata) {
+    struct connection *c = userdata;
+    assert(a && c && c->fixed_source == id);
+
+    do_work(c);
+}
+
+/*** socket_server callbacks ***/
 
 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
     struct pa_protocol_simple *p = userdata;
@@ -191,34 +248,19 @@ static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, vo
     c->io = io;
     c->sink_input = NULL;
     c->source_output = NULL;
+    c->fixed_source = NULL;
     c->input_memblockq = c->output_memblockq = NULL;
     c->protocol = p;
-
-    pa_iochannel_peer_to_string(io, cname, sizeof(cname));
+    c->playback.current_memblock = NULL;
+    c->playback.memblock_index = 0;
+    c->playback.fragment_size = 0;
+    
+    pa_iochannel_socket_peer_to_string(io, cname, sizeof(cname));
     c->client = pa_client_new(p->core, "SIMPLE", cname);
     assert(c->client);
     c->client->kill = client_kill_cb;
     c->client->userdata = c;
 
-    if (p->mode & PA_PROTOCOL_SIMPLE_RECORD) {
-        struct pa_source *source;
-        size_t l;
-
-        if (!(source = pa_source_get_default(p->core))) {
-            fprintf(stderr, "Failed to get default source.\n");
-            goto fail;
-        }
-
-        c->source_output = pa_source_output_new(source, c->client->name, &p->sample_spec);
-        assert(c->source_output);
-        c->source_output->push = source_output_push_cb;
-        c->source_output->kill = source_output_kill_cb;
-        c->source_output->userdata = c;
-
-        l = (size_t) (pa_bytes_per_second(&p->sample_spec)*RECORD_BUFFER_SECONDS);
-        c->output_memblockq = pa_memblockq_new(l, 0, pa_sample_size(&p->sample_spec), l/2, 0);
-    }
-
     if (p->mode & PA_PROTOCOL_SIMPLE_PLAYBACK) {
         struct pa_sink *sink;
         size_t l;
@@ -237,12 +279,40 @@ static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, vo
         c->sink_input->userdata = c;
 
         l = (size_t) (pa_bytes_per_second(&p->sample_spec)*PLAYBACK_BUFFER_SECONDS);
-        c->input_memblockq = pa_memblockq_new(l, 0, pa_sample_size(&p->sample_spec), l/2, l/10);
+        c->input_memblockq = pa_memblockq_new(l, 0, pa_sample_size(&p->sample_spec), l/2, l/PLAYBACK_BUFFER_FRAGMENTS);
+        assert(c->input_memblockq);
+        pa_iochannel_socket_set_rcvbuf(io, l/PLAYBACK_BUFFER_FRAGMENTS*5);
+        c->playback.fragment_size = l/10;
     }
 
 
+    if (p->mode & PA_PROTOCOL_SIMPLE_RECORD) {
+        struct pa_source *source;
+        size_t l;
+
+        if (!(source = pa_source_get_default(p->core))) {
+            fprintf(stderr, "Failed to get default source.\n");
+            goto fail;
+        }
+
+        c->source_output = pa_source_output_new(source, c->client->name, &p->sample_spec);
+        assert(c->source_output);
+        c->source_output->push = source_output_push_cb;
+        c->source_output->kill = source_output_kill_cb;
+        c->source_output->userdata = c;
+
+        l = (size_t) (pa_bytes_per_second(&p->sample_spec)*RECORD_BUFFER_SECONDS);
+        c->output_memblockq = pa_memblockq_new(l, 0, pa_sample_size(&p->sample_spec), 0, 0);
+        pa_iochannel_socket_set_sndbuf(io, l/RECORD_BUFFER_FRAGMENTS*2);
+    }
+
     pa_iochannel_set_callback(c->io, io_callback, c);
     pa_idxset_put(p->connections, c, NULL);
+
+    c->fixed_source = p->core->mainloop->source_fixed(p->core->mainloop, fixed_callback, c);
+    assert(c->fixed_source);
+    p->core->mainloop->enable_fixed(p->core->mainloop, c->fixed_source, 0);
+    
     return;
     
 fail: