initial commit

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@3 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/protocol-simple.c

@@ -0,0 +1,173 @@
+#include <assert.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+
+#include "inputstream.h"
+#include "outputstream.h"
+#include "protocol-simple.h"
+#include "client.h"
+
+struct connection {
+    struct protocol_simple *protocol;
+    struct iochannel *io;
+    struct input_stream *istream;
+    struct output_stream *ostream;
+    struct client *client;
+};
+
+struct protocol_simple {
+    struct core *core;
+    struct socket_server*server;
+    struct idxset *connections;
+    enum protocol_simple_mode mode;
+};
+
+#define BUFSIZE PIPE_BUF
+
+static void free_connection(void *data, void *userdata) {
+    struct connection *c = data;
+    assert(data);
+    
+    if (c->istream)
+        input_stream_free(c->istream);
+    if (c->ostream)
+        output_stream_free(c->ostream);
+
+    client_free(c->client);
+
+    iochannel_free(c->io);
+    free(c);
+}
+
+static void io_callback(struct iochannel*io, void *userdata) {
+    struct connection *c = userdata;
+    assert(io && c);
+
+    if (c->istream && iochannel_is_readable(io)) {
+        struct memchunk chunk;
+        ssize_t r;
+
+        chunk.memblock = memblock_new(BUFSIZE);
+        assert(chunk.memblock);
+
+        if ((r = iochannel_read(io, chunk.memblock->data, BUFSIZE)) <= 0) {
+            fprintf(stderr, "read(): %s\n", r == 0 ? "EOF" : strerror(errno));
+            memblock_unref(chunk.memblock);
+            goto fail;
+        }
+        
+        chunk.memblock->length = r;
+        chunk.length = r;
+        chunk.index = 0;
+        
+        memblockq_push(c->istream->memblockq, &chunk, 0);
+        input_stream_notify(c->istream);
+        memblock_unref(chunk.memblock);
+    }
+
+    if (c->ostream && iochannel_is_writable(io)) {
+        struct memchunk chunk;
+        ssize_t r;
+
+        memblockq_peek(c->ostream->memblockq, &chunk);
+        assert(chunk.memblock && chunk.length);
+
+        if ((r = iochannel_write(io, chunk.memblock->data+chunk.index, chunk.length)) < 0) {
+            fprintf(stderr, "write(): %s\n", strerror(errno));
+            memblock_unref(chunk.memblock);
+            goto fail;
+        }
+        
+        memblockq_drop(c->ostream->memblockq, r);
+        memblock_unref(chunk.memblock);
+    }
+
+    return;
+    
+fail:
+    idxset_remove_by_data(c->protocol->connections, c, NULL);
+    free_connection(c, NULL);
+}
+
+static void on_connection(struct socket_server*s, struct iochannel *io, void *userdata) {
+    struct protocol_simple *p = userdata;
+    struct connection *c = NULL;
+    assert(s && io && p);
+
+    c = malloc(sizeof(struct connection));
+    assert(c);
+    c->io = io;
+    c->istream = NULL;
+    c->ostream = NULL;
+    c->protocol = p;
+    
+    if (p->mode & PROTOCOL_SIMPLE_RECORD) {
+        struct source *source;
+
+        if (!(source = core_get_default_source(p->core))) {
+            fprintf(stderr, "Failed to get default source.\n");
+            goto fail;
+        }
+
+        c->ostream = output_stream_new(source, &DEFAULT_SAMPLE_SPEC, c->client->name);
+        assert(c->ostream);
+    }
+
+    if (p->mode & PROTOCOL_SIMPLE_PLAYBACK) {
+        struct sink *sink;
+
+        if (!(sink = core_get_default_sink(p->core))) {
+            fprintf(stderr, "Failed to get default sink.\n");
+            goto fail;
+        }
+
+        c->istream = input_stream_new(sink, &DEFAULT_SAMPLE_SPEC, c->client->name);
+        assert(c->istream);
+    }
+
+    c->client = client_new(p->core, "SIMPLE", "Client");
+    assert(c->client);
+
+    iochannel_set_callback(c->io, io_callback, c);
+    idxset_put(p->connections, c, NULL);
+    return;
+    
+fail:
+    if (c) {
+        if (c->istream)
+            input_stream_free(c->istream);
+        if (c->ostream)
+            output_stream_free(c->ostream);
+
+        iochannel_free(c->io);
+        free(c);
+    }
+}
+
+struct protocol_simple* protocol_simple_new(struct core *core, struct socket_server *server, enum protocol_simple_mode mode) {
+    struct protocol_simple* p;
+    assert(core && server && mode <= PROTOCOL_SIMPLE_DUPLEX && mode > 0);
+
+    p = malloc(sizeof(struct protocol_simple));
+    assert(p);
+    p->core = core;
+    p->server = server;
+    p->connections = idxset_new(NULL, NULL);
+    p->mode = mode;
+
+    socket_server_set_callback(p->server, on_connection, p);
+    
+    return p;
+}
+
+
+void protocol_simple_free(struct protocol_simple *p) {
+    assert(p);
+
+    idxset_free(p->connections, free_connection, NULL);
+    socket_server_free(p->server);
+    free(p);
+}