1 #ifndef _SOUND_PLAY_NODE_ 2 #define _SOUND_PLAY_NODE_ 3 4 #include <BufferProducer.h> 5 #include <MediaEventLooper.h> 6 #include <Buffer.h> 7 #include <BufferGroup.h> 8 #include "SoundPlayer.h" 9 10 /*********************************************************************** 11 * AUTHOR: Marcus Overhagen, Jérôme Duval 12 * FILE: SoundPlayNode.h 13 * DESCR: This is the BBufferProducer, used internally by BSoundPlayer 14 * This belongs into a private namespace, but isn't for 15 * compatibility reasons. 16 ***********************************************************************/ 17 18 class _SoundPlayNode 19 : public BBufferProducer, public BMediaEventLooper 20 { 21 public: 22 _SoundPlayNode(const char *name, const media_multi_audio_format *format, BSoundPlayer *player); 23 ~_SoundPlayNode(); 24 25 bool IsPlaying(); 26 bigtime_t Latency(); 27 28 /*************************/ 29 /* begin from BMediaNode */ 30 public: 31 virtual BMediaAddOn* AddOn( 32 int32 * internal_id) const; /* Who instantiated you -- or NULL for app class */ 33 34 protected: 35 /* These don't return errors; instead, they use the global error condition reporter. */ 36 /* A node is required to have a queue of at least one pending command (plus TimeWarp) */ 37 /* and is recommended to allow for at least one pending command of each type. */ 38 /* Allowing an arbitrary number of outstanding commands might be nice, but apps */ 39 /* cannot depend on that happening. */ 40 virtual void Preroll(void); 41 42 public: 43 virtual status_t HandleMessage( 44 int32 message, 45 const void * data, 46 size_t size); 47 48 protected: 49 virtual void NodeRegistered(void); /* reserved 2 */ 50 virtual status_t RequestCompleted(const media_request_info &info); 51 virtual void SetTimeSource(BTimeSource *timeSource); 52 virtual void SetRunMode(run_mode mode); 53 54 /* end from BMediaNode */ 55 /***********************/ 56 57 /******************************/ 58 /* begin from BBufferProducer */ 59 60 virtual status_t FormatSuggestionRequested( media_type type, 61 int32 quality, 62 media_format* format); 63 64 virtual status_t FormatProposal( const media_source& output, 65 media_format* format); 66 67 virtual status_t FormatChangeRequested( const media_source& source, 68 const media_destination& destination, 69 media_format* io_format, 70 int32* _deprecated_); 71 virtual status_t GetNextOutput( int32* cookie, 72 media_output* out_output); 73 virtual status_t DisposeOutputCookie( int32 cookie); 74 75 virtual status_t SetBufferGroup( const media_source& for_source, 76 BBufferGroup* group); 77 virtual status_t GetLatency( bigtime_t * out_latency); 78 79 virtual status_t PrepareToConnect( const media_source& what, 80 const media_destination& where, 81 media_format* format, 82 media_source* out_source, 83 char* out_name); 84 85 virtual void Connect( status_t error, 86 const media_source& source, 87 const media_destination& destination, 88 const media_format& format, 89 char* io_name); 90 91 virtual void Disconnect( const media_source& what, 92 const media_destination& where); 93 94 virtual void LateNoticeReceived( const media_source& what, 95 bigtime_t how_much, 96 bigtime_t performance_time); 97 98 virtual void EnableOutput( const media_source & what, 99 bool enabled, 100 int32* _deprecated_); 101 virtual void AdditionalBufferRequested( const media_source& source, 102 media_buffer_id prev_buffer, 103 bigtime_t prev_time, 104 const media_seek_tag* prev_tag); 105 virtual void LatencyChanged( const media_source& source, 106 const media_destination& destination, 107 bigtime_t new_latency, 108 uint32 flags); 109 /* end from BBufferProducer */ 110 /****************************/ 111 112 /********************************/ 113 /* start from BMediaEventLooper */ 114 115 protected: 116 /* you must override to handle your events! */ 117 /* you should not call HandleEvent directly */ 118 virtual void HandleEvent( const media_timed_event *event, 119 bigtime_t lateness, 120 bool realTimeEvent = false); 121 122 /* end from BMediaEventLooper */ 123 /******************************/ 124 125 public: 126 media_multi_audio_format Format() const; 127 128 protected: 129 130 virtual status_t HandleStart( 131 const media_timed_event *event, 132 bigtime_t lateness, 133 bool realTimeEvent = false); 134 virtual status_t HandleSeek( 135 const media_timed_event *event, 136 bigtime_t lateness, 137 bool realTimeEvent = false); 138 virtual status_t HandleWarp( 139 const media_timed_event *event, 140 bigtime_t lateness, 141 bool realTimeEvent = false); 142 virtual status_t HandleStop( 143 const media_timed_event *event, 144 bigtime_t lateness, 145 bool realTimeEvent = false); 146 virtual status_t SendNewBuffer( 147 const media_timed_event *event, 148 bigtime_t lateness, 149 bool realTimeEvent = false); 150 virtual status_t HandleDataStatus( 151 const media_timed_event *event, 152 bigtime_t lateness, 153 bool realTimeEvent = false); 154 virtual status_t HandleParameter( 155 const media_timed_event *event, 156 bigtime_t lateness, 157 bool realTimeEvent = false); 158 159 void AllocateBuffers(); 160 BBuffer* FillNextBuffer(bigtime_t event_time); 161 162 private: 163 BSoundPlayer *mPlayer; 164 165 status_t mInitCheckStatus; 166 bool mOutputEnabled; 167 media_output mOutput; 168 BBufferGroup *mBufferGroup; 169 media_format mFormat; 170 bigtime_t mLatency; 171 bigtime_t mInternalLatency; 172 bigtime_t mStartTime; 173 uint64 mFramesSent; 174 int32 mTooEarlyCount; 175 }; 176 177 #endif 178