[deb_shairplay.git] / src / shairplay.c

#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>

#ifdef WIN32
#include <windows.h>
#endif

#include <shairplay/dnssd.h>
#include <shairplay/raop.h>

#include <ao/ao.h>

#include "config.h"

typedef struct {
	char apname[56];
	char password[56];
	unsigned short port;

	char ao_driver[56];
	char ao_devicename[56];
	char ao_deviceid[16];
} shairplay_options_t;

typedef struct {
	ao_device *device;

	int buffering;
	int buflen;
	char buffer[8192];

	float volume;
} shairplay_session_t;


static int running;


static ao_device *
audio_open_device(shairplay_options_t *opt, int bits, int channels, int samplerate)
{
	ao_device *device = NULL;
	ao_option *ao_options = NULL;
	ao_sample_format format;
	int driver_id;

	/* Get the libao driver ID */
	if (strlen(opt->ao_driver)) {
		driver_id = ao_driver_id(opt->ao_driver);
	} else {
		driver_id = ao_default_driver_id();
	}

	/* Add all available libao options */
	ao_append_option(&ao_options, "client_name", opt->apname);
	if (strlen(opt->ao_devicename)) {
		ao_append_option(&ao_options, "dev", opt->ao_devicename);
	}
	if (strlen(opt->ao_deviceid)) {
		ao_append_option(&ao_options, "id", opt->ao_deviceid);
	}

	/* Set audio format */
	memset(&format, 0, sizeof(format));
	format.bits = bits;
	format.channels = channels;
	format.rate = samplerate;
	format.byte_format = AO_FMT_NATIVE;

	/* Try opening the actual device */
	device = ao_open_live(driver_id, &format, ao_options);
	ao_free_options(ao_options);
	return device;
}

static void *
audio_init(void *cls, int bits, int channels, int samplerate)
{
	shairplay_options_t *options = cls;
	shairplay_session_t *session;

	session = calloc(1, sizeof(shairplay_session_t));
	assert(session);

	session->device = audio_open_device(options, bits, channels, samplerate);
	if (session->device == NULL) {
		printf("Error opening device %d\n", errno);
	}
	assert(session->device);

	session->buffering = 1;
	session->volume = 1.0f;
	return session;
}

static int
audio_output(shairplay_session_t *session, const void *buffer, int buflen)
{
	short *shortbuf;
	char tmpbuf[4096];
	int tmpbuflen, i;

	tmpbuflen = (buflen > sizeof(tmpbuf)) ? sizeof(tmpbuf) : buflen;
	memcpy(tmpbuf, buffer, tmpbuflen);
	if (ao_is_big_endian()) {
		for (i=0; i<tmpbuflen/2; i++) {
			char tmpch = tmpbuf[i*2];
			tmpbuf[i*2] = tmpbuf[i*2+1];
			tmpbuf[i*2+1] = tmpch;
		}
	}
	shortbuf = (short *)tmpbuf;
	for (i=0; i<tmpbuflen/2; i++) {
		shortbuf[i] = shortbuf[i] * session->volume;
	}
	ao_play(session->device, tmpbuf, tmpbuflen);
	return tmpbuflen;
}

static void
audio_process(void *cls, void *opaque, const void *buffer, int buflen)
{
	shairplay_session_t *session = opaque;
	int processed;

	if (session->buffering) {
		printf("Buffering...\n");
		if (session->buflen+buflen < sizeof(session->buffer)) {
			memcpy(session->buffer+session->buflen, buffer, buflen);
			session->buflen += buflen;
			return;
		}
		session->buffering = 0;
		printf("Finished buffering...\n");

		processed = 0;
		while (processed < session->buflen) {
			processed += audio_output(session,
			                          session->buffer+processed,
			                          session->buflen-processed);
		}
		session->buflen = 0;
	}

	processed = 0;
	while (processed < buflen) {
		processed += audio_output(session,
		                          buffer+processed,
		                          buflen-processed);
	}
}

static void
audio_destroy(void *cls, void *opaque)
{
	shairplay_session_t *session = opaque;

	ao_close(session->device);
	free(session);
}

static void
audio_set_volume(void *cls, void *opaque, float volume)
{
	shairplay_session_t *session = opaque;
	session->volume = pow(10.0, 0.05*volume);
}

static int
parse_options(shairplay_options_t *opt, int argc, char *argv[])
{
	char *path = argv[0];
	char *arg;

	strcpy(opt->apname, "Shairplay");
	opt->port = 5000;

	while ((arg = *++argv)) {
		if (!strcmp(arg, "-a")) {
			strncpy(opt->apname, *++argv, sizeof(opt->apname)-1);
		} else if (!strncmp(arg, "--apname=", 9)) {
			strncpy(opt->apname, arg+9, sizeof(opt->apname)-1);
		} else if (!strcmp(arg, "-p")) {
			strncpy(opt->password, *++argv, sizeof(opt->password)-1);
		} else if (!strncmp(arg, "--password=", 11)) {
			strncpy(opt->password, arg+11, sizeof(opt->password)-1);
		} else if (!strcmp(arg, "-o")) {
			opt->port = atoi(*++argv);
		} else if (!strncmp(arg, "--server_port=", 14)) {
			opt->port = atoi(arg+14);
		} else if (!strncmp(arg, "--ao_driver=", 12)) {
			strncpy(opt->ao_driver, arg+12, sizeof(opt->ao_driver)-1);
		} else if (!strncmp(arg, "--ao_devicename=", 16)) {
			strncpy(opt->ao_devicename, arg+16, sizeof(opt->ao_devicename)-1);
		} else if (!strncmp(arg, "--ao_deviceid=", 14)) {
			strncpy(opt->ao_deviceid, arg+14, sizeof(opt->ao_deviceid)-1);
		} else if (!strcmp(arg, "-h") || !strcmp(arg, "--help")) {
			fprintf(stderr, "Shairplay version %s\n", VERSION);
			fprintf(stderr, "Usage: %s [OPTION...]\n", path);
			fprintf(stderr, "\n");
			fprintf(stderr, "  -a, --apname=AirPort            Sets Airport name\n");
			fprintf(stderr, "  -p, --password=secret           Sets password\n");
			fprintf(stderr, "  -o, --server_port=5000          Sets port for RAOP service\n");
			fprintf(stderr, "      --ao_driver=driver          Sets the ao driver (optional)\n");
			fprintf(stderr, "      --ao_devicename=devicename  Sets the ao device name (optional)\n");
			fprintf(stderr, "      --ao_deviceid=id            Sets the ao device id (optional)\n");
			fprintf(stderr, "  -h, --help                      This help\n");
			fprintf(stderr, "\n");
			return 1;
		}
	}

	/* Set default values for apname and port */
	if (!strlen(opt->apname)) {
		strncpy(opt->apname, "Shairplay", sizeof(opt->apname)-1);
	}
	if (!opt->port) {
		opt->port = 5000;
	}
	return 0;
}

int
main(int argc, char *argv[])
{
	const char hwaddr[] = { 0x48, 0x5d, 0x60, 0x7c, 0xee, 0x22 };

	shairplay_options_t options;
	ao_device *device = NULL;

	dnssd_t *dnssd;
	raop_t *raop;
	raop_callbacks_t raop_cbs;

	int error;

	memset(&options, 0, sizeof(options));
	if (parse_options(&options, argc, argv)) {
		return 0;
	}

	ao_initialize();

	device = audio_open_device(&options, 16, 2, 44100);
	if (device == NULL) {
		fprintf(stderr, "Error opening audio device %d\n", errno);
		fprintf(stderr, "Please check your libao settings and try again\n");
		return -1;
	} else {
		ao_close(device);
		device = NULL;
	}

	memset(&raop_cbs, 0, sizeof(raop_cbs));
	raop_cbs.cls = &options;
	raop_cbs.audio_init = audio_init;
	raop_cbs.audio_process = audio_process;
	raop_cbs.audio_destroy = audio_destroy;
	raop_cbs.audio_set_volume = audio_set_volume;

	raop = raop_init_from_keyfile(10, &raop_cbs, "airport.key", NULL);
	if (raop == NULL) {
		fprintf(stderr, "Could not initialize the RAOP service\n");
		return -1;
	}

	raop_set_log_level(raop, RAOP_LOG_DEBUG);
	raop_start(raop, &options.port, hwaddr, sizeof(hwaddr), NULL);

	error = 0;
	dnssd = dnssd_init(&error);
	if (error) {
		fprintf(stderr, "ERROR: Could not initialize dnssd library!\n");
		fprintf(stderr, "------------------------------------------\n");
		fprintf(stderr, "You could try the following resolutions based on your OS:\n");
		fprintf(stderr, "Windows: Try installing http://support.apple.com/kb/DL999\n");
		fprintf(stderr, "Debian/Ubuntu: Try installing libavahi-compat-libdnssd1 package\n");
		raop_destroy(raop);
		return -1;
	}

	dnssd_register_raop(dnssd, options.apname, options.port, hwaddr, sizeof(hwaddr), 0);
	dnssd_register_airplay(dnssd, options.apname, 1234, hwaddr, sizeof(hwaddr));

	running = 1;
	while (running) {
#ifndef WIN32
		sleep(1);
#else
		Sleep(1000);
#endif
	}

	dnssd_unregister_raop(dnssd);
	dnssd_destroy(dnssd);

	raop_stop(raop);
	raop_destroy(raop);

	ao_shutdown();

	return 0;
}
Commit	Line	Data
ad58f7a2 JVH	1	#include <stdlib.h>
	2	#include <stdio.h>
	3	#include <math.h>
	4	#include <string.h>
	5	#include <unistd.h>
	6	#include <assert.h>
	7
	8	#ifdef WIN32
	9	#include <windows.h>
	10	#endif
	11
	12	#include <shairplay/dnssd.h>
	13	#include <shairplay/raop.h>
	14
	15	#include <ao/ao.h>
	16
	17	#include "config.h"
	18
	19	typedef struct {
	20	char apname[56];
	21	char password[56];
	22	unsigned short port;
	23
	24	char ao_driver[56];
	25	char ao_devicename[56];
	26	char ao_deviceid[16];
	27	} shairplay_options_t;
	28
	29	typedef struct {
	30	ao_device *device;
	31
	32	int buffering;
	33	int buflen;
	34	char buffer[8192];
	35
	36	float volume;
	37	} shairplay_session_t;
	38
	39
258e9fb8 JVH	40	static int running;
	41
	42
ad58f7a2 JVH	43	static ao_device *
	44	audio_open_device(shairplay_options_t *opt, int bits, int channels, int samplerate)
	45	{
	46	ao_device *device = NULL;
	47	ao_option *ao_options = NULL;
	48	ao_sample_format format;
	49	int driver_id;
	50
	51	/* Get the libao driver ID */
	52	if (strlen(opt->ao_driver)) {
	53	driver_id = ao_driver_id(opt->ao_driver);
	54	} else {
	55	driver_id = ao_default_driver_id();
	56	}
	57
	58	/* Add all available libao options */
	59	ao_append_option(&ao_options, "client_name", opt->apname);
	60	if (strlen(opt->ao_devicename)) {
	61	ao_append_option(&ao_options, "dev", opt->ao_devicename);
	62	}
	63	if (strlen(opt->ao_deviceid)) {
	64	ao_append_option(&ao_options, "id", opt->ao_deviceid);
	65	}
	66
	67	/* Set audio format */
	68	memset(&format, 0, sizeof(format));
	69	format.bits = bits;
	70	format.channels = channels;
	71	format.rate = samplerate;
	72	format.byte_format = AO_FMT_NATIVE;
	73
	74	/* Try opening the actual device */
	75	device = ao_open_live(driver_id, &format, ao_options);
	76	ao_free_options(ao_options);
	77	return device;
	78	}
	79
	80	static void *
	81	audio_init(void *cls, int bits, int channels, int samplerate)
	82	{
	83	shairplay_options_t *options = cls;
	84	shairplay_session_t *session;
	85
	86	session = calloc(1, sizeof(shairplay_session_t));
	87	assert(session);
	88
	89	session->device = audio_open_device(options, bits, channels, samplerate);
	90	if (session->device == NULL) {
	91	printf("Error opening device %d\n", errno);
	92	}
	93	assert(session->device);
	94
	95	session->buffering = 1;
	96	session->volume = 1.0f;
	97	return session;
	98	}
	99
	100	static int
	101	audio_output(shairplay_session_t session, const void buffer, int buflen)
	102	{
	103	short *shortbuf;
	104	char tmpbuf[4096];
	105	int tmpbuflen, i;
	106
107	tmpbuflen = (buflen > sizeof(tmpbuf)) ? sizeof(tmpbuf) : buflen;
108	memcpy(tmpbuf, buffer, tmpbuflen);
109	if (ao_is_big_endian()) {
110	for (i=0; i<tmpbuflen/2; i++) {
111	char tmpch = tmpbuf[i*2];
112	tmpbuf[i2] = tmpbuf[i2+1];
113	tmpbuf[i*2+1] = tmpch;
114	}
115	}
116	shortbuf = (short *)tmpbuf;
117	for (i=0; i<tmpbuflen/2; i++) {
118	shortbuf[i] = shortbuf[i] * session->volume;
119	}
120	ao_play(session->device, tmpbuf, tmpbuflen);
121	return tmpbuflen;
122	}
123
124	static void
125	audio_process(void cls, void opaque, const void *buffer, int buflen)
126	{
127	shairplay_session_t *session = opaque;
128	int processed;
129
130	if (session->buffering) {
131	printf("Buffering...\n");
132	if (session->buflen+buflen < sizeof(session->buffer)) {
133	memcpy(session->buffer+session->buflen, buffer, buflen);
134	session->buflen += buflen;
135	return;
136	}
137	session->buffering = 0;
138	printf("Finished buffering...\n");
139
140	processed = 0;
141	while (processed < session->buflen) {
142	processed += audio_output(session,
143	session->buffer+processed,
144	session->buflen-processed);
145	}
146	session->buflen = 0;
147	}
148
149	processed = 0;
150	while (processed < buflen) {
151	processed += audio_output(session,
152	buffer+processed,
153	buflen-processed);
154	}
155	}
156
157	static void
158	audio_destroy(void cls, void opaque)
159	{
160	shairplay_session_t *session = opaque;
161
162	ao_close(session->device);
163	free(session);
164	}
165
166	static void
167	audio_set_volume(void cls, void opaque, float volume)
168	{
169	shairplay_session_t *session = opaque;
170	session->volume = pow(10.0, 0.05*volume);
171	}
172
173	static int
174	parse_options(shairplay_options_t opt, int argc, char argv[])
175	{
176	char *path = argv[0];
177	char *arg;
178
179	strcpy(opt->apname, "Shairplay");
180	opt->port = 5000;
181
182	while ((arg = *++argv)) {
183	if (!strcmp(arg, "-a")) {
184	strncpy(opt->apname, *++argv, sizeof(opt->apname)-1);
185	} else if (!strncmp(arg, "--apname=", 9)) {
186	strncpy(opt->apname, arg+9, sizeof(opt->apname)-1);
187	} else if (!strcmp(arg, "-p")) {
188	strncpy(opt->password, *++argv, sizeof(opt->password)-1);
189	} else if (!strncmp(arg, "--password=", 11)) {
190	strncpy(opt->password, arg+11, sizeof(opt->password)-1);
191	} else if (!strcmp(arg, "-o")) {
192	opt->port = atoi(*++argv);
193	} else if (!strncmp(arg, "--server_port=", 14)) {
194	opt->port = atoi(arg+14);
195	} else if (!strncmp(arg, "--ao_driver=", 12)) {
196	strncpy(opt->ao_driver, arg+12, sizeof(opt->ao_driver)-1);
197	} else if (!strncmp(arg, "--ao_devicename=", 16)) {
198	strncpy(opt->ao_devicename, arg+16, sizeof(opt->ao_devicename)-1);
199	} else if (!strncmp(arg, "--ao_deviceid=", 14)) {
200	strncpy(opt->ao_deviceid, arg+14, sizeof(opt->ao_deviceid)-1);
201	} else if (!strcmp(arg, "-h") \|\| !strcmp(arg, "--help")) {
202	fprintf(stderr, "Shairplay version %s\n", VERSION);
203	fprintf(stderr, "Usage: %s [OPTION...]\n", path);
204	fprintf(stderr, "\n");
205	fprintf(stderr, " -a, --apname=AirPort Sets Airport name\n");
206	fprintf(stderr, " -p, --password=secret Sets password\n");
207	fprintf(stderr, " -o, --server_port=5000 Sets port for RAOP service\n");
208	fprintf(stderr, " --ao_driver=driver Sets the ao driver (optional)\n");
209	fprintf(stderr, " --ao_devicename=devicename Sets the ao device name (optional)\n");
210	fprintf(stderr, " --ao_deviceid=id Sets the ao device id (optional)\n");
211	fprintf(stderr, " -h, --help This help\n");
212	fprintf(stderr, "\n");
213	return 1;
214	}
215	}
216
217	/* Set default values for apname and port */
218	if (!strlen(opt->apname)) {
219	strncpy(opt->apname, "Shairplay", sizeof(opt->apname)-1);
220	}
221	if (!opt->port) {
222	opt->port = 5000;
223	}
224	return 0;
225	}
226
227	int
228	main(int argc, char *argv[])
229	{
230	const char hwaddr[] = { 0x48, 0x5d, 0x60, 0x7c, 0xee, 0x22 };
231
232	shairplay_options_t options;
233	ao_device *device = NULL;
234
235	dnssd_t *dnssd;
236	raop_t *raop;
237	raop_callbacks_t raop_cbs;
238
61c2f5d5 JVH	239	int error;
61c2f5d5 JVH	240
ad58f7a2 JVH	241	memset(&options, 0, sizeof(options));
	242	if (parse_options(&options, argc, argv)) {
	243	return 0;
	244	}
	245
	246	ao_initialize();
	247
	248	device = audio_open_device(&options, 16, 2, 44100);
	249	if (device == NULL) {
	250	fprintf(stderr, "Error opening audio device %d\n", errno);
	251	fprintf(stderr, "Please check your libao settings and try again\n");
	252	return -1;
	253	} else {
	254	ao_close(device);
	255	device = NULL;
	256	}
	257
	258	memset(&raop_cbs, 0, sizeof(raop_cbs));
	259	raop_cbs.cls = &options;
	260	raop_cbs.audio_init = audio_init;
	261	raop_cbs.audio_process = audio_process;
	262	raop_cbs.audio_destroy = audio_destroy;
	263	raop_cbs.audio_set_volume = audio_set_volume;
	264
cf9b3c34	265	raop = raop_init_from_keyfile(10, &raop_cbs, "airport.key", NULL);
ad58f7a2 JVH	266	if (raop == NULL) {
	267	fprintf(stderr, "Could not initialize the RAOP service\n");
	268	return -1;
	269	}
	270
	271	raop_set_log_level(raop, RAOP_LOG_DEBUG);
	272	raop_start(raop, &options.port, hwaddr, sizeof(hwaddr), NULL);
	273
61c2f5d5 JVH	274	error = 0;
	275	dnssd = dnssd_init(&error);
	276	if (error) {
	277	fprintf(stderr, "ERROR: Could not initialize dnssd library!\n");
	278	fprintf(stderr, "------------------------------------------\n");
	279	fprintf(stderr, "You could try the following resolutions based on your OS:\n");
	280	fprintf(stderr, "Windows: Try installing http://support.apple.com/kb/DL999\n");
	281	fprintf(stderr, "Debian/Ubuntu: Try installing libavahi-compat-libdnssd1 package\n");
	282	raop_destroy(raop);
	283	return -1;
	284	}
	285
ad58f7a2	286	dnssd_register_raop(dnssd, options.apname, options.port, hwaddr, sizeof(hwaddr), 0);
61c2f5d5	287	dnssd_register_airplay(dnssd, options.apname, 1234, hwaddr, sizeof(hwaddr));
ad58f7a2	288
258e9fb8 JVH	289	running = 1;
258e9fb8 JVH	290	while (running) {
ad58f7a2	291	#ifndef WIN32
258e9fb8	292	sleep(1);
ad58f7a2	293	#else
258e9fb8	294	Sleep(1000);
ad58f7a2	295	#endif
258e9fb8	296	}
ad58f7a2 JVH	297
	298	dnssd_unregister_raop(dnssd);
	299	dnssd_destroy(dnssd);
	300
	301	raop_stop(raop);
	302	raop_destroy(raop);
	303
	304	ao_shutdown();
	305
	306	return 0;
	307	}