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00027 #ifndef __JACK_NET_PACKET_H__
00028 #define __JACK_NET_PACKET_H__
00029
00030 #ifdef __cplusplus
00031 extern "C"
00032 {
00033 #endif
00034
00035 #include <jack/jack.h>
00036 #include <jack/types.h>
00037
00038 #include <jack/jslist.h>
00039
00040 #include <jack/midiport.h>
00041
00042
00043
00044
00045 #define CELT_MODE 1000 // Magic bitdepth value that indicates CELT compression
00046 #define MASTER_FREEWHEELS 0x80000000
00047
00048 typedef struct _jacknet_packet_header jacknet_packet_header;
00049
00050 struct _jacknet_packet_header
00051 {
00052
00053 jack_nframes_t capture_channels_audio;
00054 jack_nframes_t playback_channels_audio;
00055 jack_nframes_t capture_channels_midi;
00056 jack_nframes_t playback_channels_midi;
00057 jack_nframes_t period_size;
00058 jack_nframes_t sample_rate;
00059
00060
00061 jack_nframes_t sync_state;
00062 jack_nframes_t transport_frame;
00063 jack_nframes_t transport_state;
00064
00065
00066 jack_nframes_t framecnt;
00067 jack_nframes_t latency;
00068
00069 jack_nframes_t reply_port;
00070 jack_nframes_t mtu;
00071 jack_nframes_t fragment_nr;
00072 };
00073
00074 typedef union _int_float int_float_t;
00075
00076 union _int_float
00077 {
00078 uint32_t i;
00079 float f;
00080 };
00081
00082
00083 typedef struct _cache_packet cache_packet;
00084
00085 struct _cache_packet
00086 {
00087 int valid;
00088 int num_fragments;
00089 int packet_size;
00090 int mtu;
00091 jack_time_t recv_timestamp;
00092 jack_nframes_t framecnt;
00093 char * fragment_array;
00094 char * packet_buf;
00095 };
00096
00097 typedef struct _packet_cache packet_cache;
00098
00099 struct _packet_cache
00100 {
00101 int size;
00102 cache_packet *packets;
00103 int mtu;
00104 struct sockaddr_in master_address;
00105 int master_address_valid;
00106 jack_nframes_t last_framecnt_retreived;
00107 int last_framecnt_retreived_valid;
00108 };
00109
00110 extern packet_cache *global_packcache;
00111
00112
00113
00114 packet_cache *packet_cache_new(int num_packets, int pkt_size, int mtu);
00115 void packet_cache_free(packet_cache *pkt_cache);
00116
00117 cache_packet *packet_cache_get_packet(packet_cache *pkt_cache, jack_nframes_t framecnt);
00118 cache_packet *packet_cache_get_oldest_packet(packet_cache *pkt_cache);
00119 cache_packet *packet_cache_get_free_packet(packet_cache *pkt_cache);
00120
00121 void cache_packet_reset(cache_packet *pack);
00122 void cache_packet_set_framecnt(cache_packet *pack, jack_nframes_t framecnt);
00123 void cache_packet_add_fragment(cache_packet *pack, char *packet_buf, int rcv_len);
00124 int cache_packet_is_complete(cache_packet *pack);
00125
00126 void packet_cache_drain_socket( packet_cache *pcache, int sockfd );
00127 void packet_cache_reset_master_address( packet_cache *pcache );
00128 float packet_cache_get_fill( packet_cache *pcache, jack_nframes_t expected_framecnt );
00129 int packet_cache_retreive_packet_pointer( packet_cache *pcache, jack_nframes_t framecnt, char **packet_buf, int pkt_size, jack_time_t *timestamp );
00130 int packet_cache_release_packet( packet_cache *pcache, jack_nframes_t framecnt );
00131 int packet_cache_get_next_available_framecnt( packet_cache *pcache, jack_nframes_t expected_framecnt, jack_nframes_t *framecnt );
00132 int packet_cache_get_highest_available_framecnt( packet_cache *pcache, jack_nframes_t *framecnt );
00133 int packet_cache_find_latency( packet_cache *pcache, jack_nframes_t expected_framecnt, jack_nframes_t *framecnt );
00134
00135
00136 int netjack_poll_deadline (int sockfd, jack_time_t deadline);
00137
00138 void netjack_sendto(int sockfd, char *packet_buf, int pkt_size, int flags, struct sockaddr *addr, int addr_size, int mtu);
00139
00140
00141 int get_sample_size(int bitdepth);
00142 void packet_header_hton(jacknet_packet_header *pkthdr);
00143
00144 void packet_header_ntoh(jacknet_packet_header *pkthdr);
00145
00146 void render_payload_to_jack_ports(int bitdepth, void *packet_payload, jack_nframes_t net_period_down, JSList *capture_ports, JSList *capture_srcs, jack_nframes_t nframes, int dont_htonl_floats );
00147
00148 void render_jack_ports_to_payload(int bitdepth, JSList *playback_ports, JSList *playback_srcs, jack_nframes_t nframes, void *packet_payload, jack_nframes_t net_period_up, int dont_htonl_floats );
00149
00150
00151
00152
00153 int netjack_poll(int sockfd, int timeout);
00154
00155
00156
00157
00158
00159 void decode_midi_buffer (uint32_t *buffer_uint32, unsigned int buffer_size_uint32, jack_default_audio_sample_t* buf);
00160 void encode_midi_buffer (uint32_t *buffer_uint32, unsigned int buffer_size_uint32, jack_default_audio_sample_t* buf);
00161 #ifdef __cplusplus
00162 }
00163 #endif
00164 #endif
00165