summaryrefslogtreecommitdiff
path: root/src/cmumble.c
blob: 3a40e21822a3c97e17764dd4033ccc2bc49be8b3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
#include "../config.h"

#include <string.h>

#include "varint.h"
#include "cmumble.h"
#include "io.h"
#include "connection.h"

static struct user *
find_user(struct context *ctx, uint32_t session)
{
	struct user *user = NULL;
	GList *l;

	for (l = ctx->users; l; l = l->next)
		if (((struct user *) l->data)->session == session) {
			user = l->data;
			break;
		}

	return user;
}

static void
appsrc_push(GstAppSrc *src, const void *mem, size_t size)
{
	GstBuffer *gstbuf;
	
	gstbuf = gst_app_buffer_new(g_memdup(mem, size), size, g_free, NULL);
	gst_app_src_push_buffer(src, gstbuf);
}

static GstFlowReturn
pull_buffer(GstAppSink *sink, gpointer user_data)
{
	struct context *ctx = user_data;
	GstBuffer *buf;
	uint8_t data[1024];
	uint32_t write = 0, pos = 0;
	MumbleProto__UDPTunnel tunnel;
	static int seq = 0;

	buf = gst_app_sink_pull_buffer(ctx->sink);

	if (++seq <= 2) {
		gst_buffer_unref(buf);
		return GST_FLOW_OK;
	}
	if (GST_BUFFER_SIZE(buf) > 127) {
		g_printerr("GOT TOO BIG BUFFER\n");
		return GST_FLOW_ERROR;
	}

	data[pos++] = (udp_voice_celt_alpha) | (0 << 4);

	encode_varint(&data[pos], &write, ++ctx->sequence, 1024-pos);
	pos += write;

	data[pos++] = 0x00 /*: 0x80 */ | (GST_BUFFER_SIZE(buf) & 0x7F);
	memcpy(&data[pos], GST_BUFFER_DATA(buf), GST_BUFFER_SIZE(buf));
	pos += GST_BUFFER_SIZE(buf);

	gst_buffer_unref(buf);

	mumble_proto__udptunnel__init(&tunnel);
	tunnel.packet.data = data;
	tunnel.packet.len = pos;
	cmumble_send_msg(ctx, &tunnel.base);

	return GST_FLOW_OK;
}

static void
recv_udp_tunnel(MumbleProto__UDPTunnel *tunnel, struct context *ctx)
{
	int64_t session, sequence;
	uint32_t pos = 1, read = 0;
	uint8_t frame_len, terminator;
	struct user *user = NULL;
	uint8_t *data = tunnel->packet.data;
	size_t len = tunnel->packet.len;

	session  = decode_varint(&data[pos], &read, len-pos);
	pos += read;
	sequence = decode_varint(&data[pos], &read, len-pos);
	pos += read;

	user = find_user(ctx, session);
	if (user == NULL) {
		g_printerr("received audio packet from unknown user, dropping.\n");
		return;
	}

	do {
		frame_len  = data[pos] & 0x7F;
		terminator = data[pos] & 0x80;
		pos += 1;
		
		if (frame_len == 0 || frame_len > len-pos)
			break;

		appsrc_push(user->src, &data[pos], frame_len);

		pos += frame_len;
		sequence++;
	} while (terminator);
}

static void
recv_version(MumbleProto__Version *version, struct context *ctx)
{
	g_print("version: 0x%x\n", version->version);
	g_print("release: %s\n", version->release);
}

static void
recv_channel_state(MumbleProto__ChannelState *state, struct context *ctx)
{
	g_print("channel: id: %u, parent: %u, name: %s, description: %s, temporary: %d, position: %d\n",
		state->channel_id, state->parent, state->name, state->description, state->temporary, state->position);
}

static void
recv_server_sync(MumbleProto__ServerSync *sync, struct context *ctx)
{
	ctx->session = sync->session;

	g_print("got session: %d\n", ctx->session);
}

static void
recv_crypt_setup(MumbleProto__CryptSetup *crypt, struct context *ctx)
{
#if 0
	int i;

	if (crypt->has_key) {
		g_print("key: 0x");
		for (i = 0; i < crypt->key.len; ++i)
			g_print("%x", crypt->key.data[i]);
		g_print("\n");
	}
	if (crypt->has_client_nonce) {
		g_print("client nonce: 0x");
		for (i = 0; i < crypt->client_nonce.len; ++i)
			g_print("%x", crypt->client_nonce.data[i]);
		g_print("\n");
	}
	if (crypt->has_server_nonce) {
		g_print("server nonce: 0x");
		for (i = 0; i < crypt->server_nonce.len; ++i)
			g_print("%x", crypt->server_nonce.data[i]);
		g_print("\n");
	}
#endif
}

static void
recv_codec_version(MumbleProto__CodecVersion *codec, struct context *ctx)
{
	g_print("Codec Version: alpha: %d, beta: %d, pefer_alpha: %d\n",
		codec->alpha, codec->beta, codec->prefer_alpha);
}


static void
recv_user_remove(MumbleProto__UserRemove *remove, struct context *ctx)
{
	struct user *user = NULL;

	if ((user = find_user(ctx, remove->session))) {
		ctx->users = g_list_remove(ctx->users, user);
		g_free(user->name);
		/* FIXME: destroy playback pipeline */
		g_slice_free(struct user, user);
	}
}

static int
user_create_playback_pipeline(struct context *ctx, struct user *user);

static void
recv_user_state(MumbleProto__UserState *state, struct context *ctx)
{
	struct user *user = NULL;

	if ((user = find_user(ctx, state->session))) {
		/* update */
		return;
	}

	user = g_slice_new0(struct user);
	if (user == NULL) {
		g_printerr("Out of memory.\n");
		exit(1);
	}

	user->session = state->session;
	user->name = g_strdup(state->name);
	user->user_id = state->user_id;

	user_create_playback_pipeline(ctx, user);
	g_print("receive user: %s\n", user->name);
	ctx->users = g_list_prepend(ctx->users, user);
}


static const struct {
#define MUMBLE_MSG(a,b) void (* a)(MumbleProto__##a *, struct context *);
	MUMBLE_MSGS
#undef MUMBLE_MSG
} callbacks = {
	.Version		= recv_version,
	.UDPTunnel		= recv_udp_tunnel,
	.Authenticate		= NULL,
	.Ping			= NULL,
	.Reject			= NULL,
	.ServerSync		= recv_server_sync,
	.ChannelRemove		= NULL,
	.ChannelState		= recv_channel_state,
	.UserRemove		= recv_user_remove,
	.UserState		= recv_user_state,
	.BanList		= NULL,
	.TextMessage		= NULL,
	.PermissionDenied	= NULL,
	.ACL			= NULL,
	.QueryUsers		= NULL,
	.CryptSetup		= recv_crypt_setup,
	.ContextActionModify	= NULL,
	.ContextAction		= NULL,
	.UserList		= NULL,
	.VoiceTarget		= NULL,
	.PermissionQuery	= NULL,
	.CodecVersion		= recv_codec_version,
	.UserStats		= NULL,
	.RequestBlob		= NULL,
	.ServerConfig		= NULL,
	.SuggestConfig		= NULL,
};

static void
set_pulse_states(gpointer data, gpointer user_data)
{
	GstElement *elm = data;
	struct user *user = user_data;
	GstStructure *props;
	gchar *name;

	if (g_strcmp0(G_OBJECT_TYPE_NAME(elm), "GstPulseSink") != 0 ||
	    g_object_class_find_property(G_OBJECT_GET_CLASS(elm),
					 "stream-properties") == NULL)
		goto out;

	/* configure pulseaudio to use:
	 * load-module module-device-manager "do_routing=1"
	 * or new users may join to default output which is not headset?
	 * Also consider setting device.intended_roles = "phone" for your
	 * wanted default output (if you dont have a usb headset dev). */

	name = g_strdup_printf("cmumble [%s]", user->name);

	props = gst_structure_new("props",
				  "application.name", G_TYPE_STRING, name,
				  "media.role", G_TYPE_STRING, "phone",
				  NULL);
					
	g_object_set(elm, "stream-properties", props, NULL);
	gst_structure_free(props);
	g_free(name);

out:
	g_object_unref(G_OBJECT(elm));
}

static int
user_create_playback_pipeline(struct context *ctx, struct user *user)
{
	GstElement *pipeline, *sink_bin;
	GError *error = NULL;
	char *desc = "appsrc name=src ! celtdec ! audioconvert ! autoaudiosink name=sink";

	pipeline = gst_parse_launch(desc, &error);
	if (error) {
		g_printerr("Failed to create pipeline: %s\n", error->message);
		return -1;
	}

	user->pipeline = pipeline;
	user->src = GST_APP_SRC(gst_bin_get_by_name(GST_BIN(pipeline), "src"));

	/* Important! */
	gst_base_src_set_live(GST_BASE_SRC(user->src), TRUE); 
	gst_base_src_set_do_timestamp(GST_BASE_SRC(user->src), TRUE);
	gst_base_src_set_format(GST_BASE_SRC(user->src), GST_FORMAT_TIME);

	gst_app_src_set_stream_type(user->src, GST_APP_STREAM_TYPE_STREAM); 

	gst_element_set_state(pipeline, GST_STATE_PLAYING);

	sink_bin = gst_bin_get_by_name(GST_BIN(pipeline), "sink");
	GstIterator *iter = gst_bin_iterate_sinks(GST_BIN(sink_bin));
	gst_iterator_foreach(iter, set_pulse_states, user);
	gst_iterator_free(iter);

	/* Setup Celt Decoder */
	appsrc_push(user->src, ctx->celt_header_packet, sizeof(CELTHeader));
	/* fake vorbiscomment buffer */
	appsrc_push(user->src, NULL, 0);

	return 0;
}

static int
setup_playback_gst_pipeline(struct context *ctx)
{
#define SAMPLERATE 48000
#define CHANNELS 1
	ctx->celt_mode = celt_mode_create(SAMPLERATE,
					  SAMPLERATE / 100, NULL);
	celt_header_init(&ctx->celt_header, ctx->celt_mode, CHANNELS);
	celt_header_to_packet(&ctx->celt_header,
			      ctx->celt_header_packet, sizeof(CELTHeader));

	return 0;
}

static int
setup_recording_gst_pipeline(struct context *ctx)
{
	GstElement *pipeline, *cutter, *sink;
	GError *error = NULL;
	GstCaps *caps;

	char *desc = "autoaudiosrc ! cutter name=cutter ! audioresample ! audioconvert ! "
		     "audio/x-raw-int,channels=1,depth=16,rate=48000,signed=TRUE,width=16 ! "
		     "celtenc ! appsink name=sink";

	pipeline = gst_parse_launch(desc, &error);
	if (error) {
		g_printerr("Failed to create pipeline: %s\n", error->message);
		return -1;
	}
	sink = gst_bin_get_by_name(GST_BIN(pipeline), "sink");
	ctx->sink = GST_APP_SINK(sink);
	ctx->record_pipeline = pipeline;

	cutter = gst_bin_get_by_name(GST_BIN(pipeline), "cutter");
	g_object_set(G_OBJECT(cutter),
		     "threshold_dB", -45.0, "leaky", TRUE, NULL);
	
	gst_app_sink_set_emit_signals(ctx->sink, TRUE);
	gst_app_sink_set_drop(ctx->sink, FALSE);;
	g_signal_connect(sink, "new-buffer", G_CALLBACK(pull_buffer), ctx);
	
	caps = gst_caps_new_simple("audio/x-celt",
				   "rate", G_TYPE_INT, SAMPLERATE,
				   "channels", G_TYPE_INT, 1,
				   "frame-size", G_TYPE_INT, SAMPLERATE/100,
				   NULL);
	gst_app_sink_set_caps(ctx->sink, caps);
	gst_caps_unref(caps);

	gst_element_set_state(pipeline, GST_STATE_PLAYING);

	ctx->sequence = 0;

	return 0;
}

int main(int argc, char **argv)
{
	char *host = "localhost";
	unsigned int port = 64738;
	struct context ctx;

	if (argc >= 3)
		host = argv[2];
	if (argc >= 4)
		port = atoi(argv[3]);

	memset(&ctx, 0, sizeof(ctx));

	ctx.users = NULL;

	g_type_init();
	ctx.loop = g_main_loop_new(NULL, FALSE);
	ctx.callbacks = (const callback_t *) &callbacks;

	if (cmumble_connection_init(&ctx, host, port) < 0)
		return 1;

	{
		MumbleProto__Version version;
		mumble_proto__version__init(&version);
		version.version = 0x010203;
		version.release = PACKAGE_STRING;
		version.os = "Gentoo/Linux";
		cmumble_send_msg(&ctx, &version.base);
	}

	{
		MumbleProto__Authenticate authenticate;
		mumble_proto__authenticate__init(&authenticate);
		authenticate.username = argv[1];
		authenticate.password = "";
		authenticate.n_celt_versions = 1;
		authenticate.celt_versions = (int32_t[]) { 0x8000000b };
		cmumble_send_msg(&ctx, &authenticate.base);
	}

	gst_init(&argc, &argv);

	if (setup_playback_gst_pipeline(&ctx) < 0)
		return 1;

	if (setup_recording_gst_pipeline(&ctx) < 0)
		return 1;

	cmumble_io_init(&ctx);

	g_main_loop_run(ctx.loop);

	g_main_loop_unref(ctx.loop);

	cmumble_io_fini(&ctx);
	cmumble_connection_fini(&ctx);

	return 0;
}