src/add-ons/media/media-add-ons/tone_producer_demo/ToneProducerAddOn.cpp

   1 /* Written by Eric Moon, from the Cortex Source code archive.
   2  * Distributed under the terms of the Be Sample Code License
   3  */
   4
   5 // ToneProducerAddOn.cpp
   6 // e.moon 4jun99
   7
   8 #include "ToneProducer.h"
   9 #include "ToneProducerAddOn.h"
  10 #include <cstring>
  11 #include <cstdlib>
  12
  13 // instantiation function
  14 extern "C" _EXPORT BMediaAddOn* make_media_addon(image_id image) {
  15         return new ToneProducerAddOn(image);
  16 }
  17
  18 // -------------------------------------------------------- //
  19 // ctor/dtor
  20 // -------------------------------------------------------- //
  21
  22 ToneProducerAddOn::~ToneProducerAddOn() {}
  23 ToneProducerAddOn::ToneProducerAddOn(image_id image) :
  24         BMediaAddOn(image) {}
  25
  26 // -------------------------------------------------------- //
  27 // BMediaAddOn impl
  28 // -------------------------------------------------------- //
  29
  30 status_t ToneProducerAddOn::InitCheck(
  31         const char** out_failure_text) {
  32         return B_OK;
  33 }
  34
  35 int32 ToneProducerAddOn::CountFlavors() {
  36         return 1;
  37 }
  38
  39 status_t ToneProducerAddOn::GetFlavorAt(
  40         int32 n,
  41         const flavor_info** out_info) {
  42         if(n)
  43                 return B_ERROR;
  44
  45         flavor_info* pInfo = new flavor_info;
  46         pInfo->internal_id = n;
  47         pInfo->name = (char *)"Demo Audio Producer";
  48         pInfo->info = (char *)
  49                 "An add-on version of the ToneProducer node.\n"
  50                 "See the Be Developer Newsletter: 2 June, 1999\n"
  51                 "adapted by Eric Moon (4 June, 1999)";
  52         pInfo->kinds = B_BUFFER_PRODUCER | B_CONTROLLABLE;
  53         pInfo->flavor_flags = 0;
  54         pInfo->possible_count = 0;
  55
  56         pInfo->in_format_count = 0;
  57         pInfo->in_formats = 0;
  58
  59         pInfo->out_format_count = 1;
  60         media_format* pFormat = new media_format;
  61         pFormat->type = B_MEDIA_RAW_AUDIO;
  62         pFormat->u.raw_audio = media_raw_audio_format::wildcard;
  63         pInfo->out_formats = pFormat;
  64
  65         *out_info = pInfo;
  66         return B_OK;
  67 }
  68
  69 BMediaNode* ToneProducerAddOn::InstantiateNodeFor(
  70         const flavor_info* info,
  71         BMessage* config,
  72         status_t* out_error) {
  73
  74         return new ToneProducer(this);
  75 }
  76
  77 status_t ToneProducerAddOn::GetConfigurationFor(
  78         BMediaNode* your_node,
  79         BMessage* into_message) {
  80
  81         // no config yet
  82         return B_OK;
  83 }
  84
  85 // END -- ToneProducerAddOn.cpp