src/include/raop.h

   1 #ifndef RAOP_H
   2 #define RAOP_H
   3
   4 #if defined (WIN32) && defined(DLL_EXPORT)
   5 # define RAOP_API __declspec(dllexport)
   6 #else
   7 # define RAOP_API
   8 #endif
   9
  10 #ifdef __cplusplus
  11 extern "C" {
  12 #endif
  13
  14
  15 /* Define syslog style log levels */
  16 #define RAOP_LOG_EMERG       0       /* system is unusable */
  17 #define RAOP_LOG_ALERT       1       /* action must be taken immediately */
  18 #define RAOP_LOG_CRIT        2       /* critical conditions */
  19 #define RAOP_LOG_ERR         3       /* error conditions */
  20 #define RAOP_LOG_WARNING     4       /* warning conditions */
  21 #define RAOP_LOG_NOTICE      5       /* normal but significant condition */
  22 #define RAOP_LOG_INFO        6       /* informational */
  23 #define RAOP_LOG_DEBUG       7       /* debug-level messages */
  24
  25
  26 typedef struct raop_s raop_t;
  27
  28 typedef void (*raop_log_callback_t)(void *cls, int level, const char *msg);
  29
  30 struct raop_callbacks_s {
  31         void* cls;
  32
  33         /* Compulsory callback functions */
  34         void* (*audio_init)(void *cls, int bits, int channels, int samplerate);
  35         void  (*audio_process)(void *cls, void *session, const void *buffer, int buflen);
  36         void  (*audio_destroy)(void *cls, void *session);
  37
  38         /* Optional but recommended callback functions */
  39         void  (*audio_flush)(void *cls, void *session);
  40         void  (*audio_set_volume)(void *cls, void *session, float volume);
  41         void  (*audio_set_metadata)(void *cls, void *session, const void *buffer, int buflen);
  42         void  (*audio_set_coverart)(void *cls, void *session, const void *buffer, int buflen);
  43 };
  44 typedef struct raop_callbacks_s raop_callbacks_t;
  45
  46 RAOP_API raop_t *raop_init(int max_clients, raop_callbacks_t *callbacks, const char *pemkey);
  47 RAOP_API raop_t *raop_init_from_keyfile(int max_clients, raop_callbacks_t *callbacks, const char *keyfile);
  48
  49 RAOP_API void raop_set_log_level(raop_t *raop, int level);
  50 RAOP_API void raop_set_log_callback(raop_t *raop, raop_log_callback_t callback, void *cls);
  51
  52 RAOP_API int raop_start(raop_t *raop, unsigned short *port, const char *hwaddr, int hwaddrlen, const char *password);
  53 RAOP_API int raop_is_running(raop_t *raop);
  54 RAOP_API void raop_stop(raop_t *raop);
  55
  56 RAOP_API void raop_destroy(raop_t *raop);
  57
  58 #ifdef __cplusplus
  59 }
  60 #endif
  61 #endif