Fixed and documented example.c

[deb_shairplay.git] / src / test / example.c

diff --git a/src/test/example.c b/src/test/example.c
index 15f91f620c923e74449ac920eda3c4a013da3f72..e93f252cd9b70dd9ea2195d5cea0f081a8690ec3 100644 (file)
--- a/src/test/example.c
+++ b/src/test/example.c
@@ -1,14 +1,59 @@
+/*
+ * Starts the AirPlay server (name "FakePort") and dumps the received contents
+ * to files:
+ * - audio.pcm : decoded audio content
+ * - metadata.bin : meta data
+ * - covertart.jpg : cover art
+ *
+ * Requires avahi-daemon to run. Also requires file "airplay.key" in the same directory.
+ *
+ * Compile with: gcc -o example -g -I../../include/shairplay example.c -lshairplay 
+ */
+
 #include <stdlib.h>
 #include <stdio.h>
 #include <unistd.h>
 
+#ifdef WIN32
+#include <windows.h>
+#endif
+
 #include "dnssd.h"
 #include "raop.h"
 
+static int running;
+
+#ifndef WIN32
+
+#include <signal.h>
+static void
+signal_handler(int sig)
+{
+       switch (sig) {
+       case SIGINT:
+       case SIGTERM:
+               running = 0;
+               break;
+       }
+}
 static void
-audio_init(void *cls, void **session, int bits, int channels, int samplerate)
+init_signals(void)
 {
-       *session = fopen("audio.pcm", "wb");
+       struct sigaction sigact;
+
+       sigact.sa_handler = signal_handler;
+       sigemptyset(&sigact.sa_mask);
+       sigact.sa_flags = 0;
+       sigaction(SIGINT, &sigact, NULL);
+       sigaction(SIGTERM, &sigact, NULL);
+}
+
+#endif
+
+static void *
+audio_init(void *cls, int bits, int channels, int samplerate)
+{
+       return fopen("audio.pcm", "wb");
 }
 
 static void
@@ -17,6 +62,30 @@ audio_set_volume(void *cls, void *session, float volume)
        printf("Setting volume to %f\n", volume);
 }
 
+static void
+audio_set_metadata(void *cls, void *session, const void *buffer, int buflen)
+{
+       int orig = buflen;
+       FILE *file = fopen("metadata.bin", "wb");
+       while (buflen > 0) {
+               buflen -= fwrite(buffer+orig-buflen, 1, buflen, file);
+       }
+       fclose(file);
+       printf("Metadata of length %d saved as metadata.bin\n", orig);
+}
+
+static void
+audio_set_coverart(void *cls, void *session, const void *buffer, int buflen)
+{
+       int orig = buflen;
+       FILE *file = fopen("coverart.jpg", "wb");
+       while (buflen > 0) {
+               buflen -= fwrite(buffer+orig-buflen, 1, buflen, file);
+       }
+       fclose(file);
+       printf("Coverart of length %d saved as coverart.jpg\n", orig);
+}
+
 static void
 audio_process(void *cls, void *session, const void *buffer, int buflen)
 {
@@ -38,31 +107,68 @@ audio_destroy(void *cls, void *session)
        fclose(session);
 }
 
+static void
+raop_log_callback(void *cls, int level, const char *msg)
+{
+       printf("RAOP LOG(%d): %s\n", level, msg);
+}
+
 int
 main(int argc, char *argv[])
 {
-        const char *name = "AppleTV";
-        unsigned short raop_port = 5000;
-        const char hwaddr[] = { 0x48, 0x5d, 0x60, 0x7c, 0xee, 0x22 };
+       const char *name = "FakePort";
+       unsigned short raop_port = 5000;
+       const char hwaddr[] = { 0x48, 0x5d, 0x60, 0x7c, 0xee, 0x22 };
 
        dnssd_t *dnssd;
        raop_t *raop;
        raop_callbacks_t raop_cbs;
 
+       int error;
+
        raop_cbs.cls = NULL;
        raop_cbs.audio_init = audio_init;
        raop_cbs.audio_set_volume = audio_set_volume;
+       raop_cbs.audio_set_metadata = audio_set_metadata;
+       raop_cbs.audio_set_coverart = audio_set_coverart;
        raop_cbs.audio_process = audio_process;
        raop_cbs.audio_flush = audio_flush;
        raop_cbs.audio_destroy = audio_destroy;
 
-       raop = raop_init_from_keyfile(&raop_cbs, "airport.key", hwaddr, sizeof(hwaddr));
-       raop_start(raop, &raop_port);
+       raop = raop_init_from_keyfile(10, &raop_cbs, "airport.key", NULL);
+       if (raop == NULL) {
+               fprintf(stderr, "Could not initialize the RAOP service (airport.key missing?)\n");
+               return -1;
+       }
 
-       dnssd = dnssd_init(hwaddr, sizeof(hwaddr), NULL);
-       dnssd_register_raop(dnssd, name, raop_port);
+       raop_set_log_level(raop, RAOP_LOG_DEBUG);
+       raop_set_log_callback(raop, &raop_log_callback, NULL);
+       raop_start(raop, &raop_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-libdnssd-dev package\n");
+               raop_destroy(raop);
+               return -1;
+       }
+
+       dnssd_register_raop(dnssd, name, raop_port, hwaddr, sizeof(hwaddr), 1);
 
-       sleep(100);
+       printf("Startup complete... Kill with Ctrl+C\n");
+
+       running = 1;
+       while (running != 0) {
+#ifndef WIN32
+               sleep(1);
+#else
+               Sleep(1000);
+#endif
+       }
 
        dnssd_unregister_raop(dnssd);
        dnssd_destroy(dnssd);