src/bin/media_client/MediaPlay.cpp

   1 /*
   2  * Copyright 2017, Dario Casalinuovo. All rights reserved.
   3  * Copyright 2005, Marcus Overhagen, marcus@overhagen.de. All rights reserved.
   4  * Copyright 2005, Jérôme Duval. All rights reserved.
   5  * Distributed under the terms of the MIT License.
   6  */
   7
   8 #include "MediaPlay.h"
   9
  10 #include <Entry.h>
  11 #include <MediaFile.h>
  12 #include <MediaTrack.h>
  13 #include <OS.h>
  14 #include <SoundPlayer.h>
  15 #include <Url.h>
  16
  17 #include <stdio.h>
  18 #include <unistd.h>
  19 #include <fcntl.h>
  20 #include <signal.h>
  21
  22 thread_id reader = -1;
  23 sem_id finished = -1;
  24 BMediaTrack* playTrack;
  25 media_format playFormat;
  26 BSoundPlayer* player = 0;
  27 volatile bool interrupt = false;
  28
  29
  30 void
  31 play_buffer(void *cookie, void * buffer, size_t size, const media_raw_audio_format & format)
  32 {
  33         int64 frames = 0;
  34
  35         // Use your feeling, Obi-Wan, and find him you will.
  36         playTrack->ReadFrames(buffer, &frames);
  37
  38         if (frames <=0) {
  39                 player->SetHasData(false);
  40                 release_sem(finished);
  41         }
  42 }
  43
  44
  45 void
  46 keyb_int(int)
  47 {
  48         // Are you threatening me, Master Jedi?
  49         interrupt = true;
  50         release_sem(finished);
  51 }
  52
  53
  54 int media_play(const char* uri)
  55 {
  56         BUrl url;
  57         entry_ref ref;
  58         BMediaFile* playFile;
  59
  60         if (get_ref_for_path(uri, &ref) != B_OK) {
  61                 url.SetUrlString(uri);
  62                 if (url.IsValid()) {
  63                         playFile = new BMediaFile(url);
  64                 } else
  65                         return 2;
  66         } else
  67                 playFile = new BMediaFile(&ref);
  68
  69         if (playFile->InitCheck() != B_OK) {
  70                 delete playFile;
  71                 return 2;
  72         }
  73
  74         for (int i = 0; i < playFile->CountTracks(); i++) {
  75                 BMediaTrack* track = playFile->TrackAt(i);
  76                 playFormat.type = B_MEDIA_RAW_AUDIO;
  77                 if ((track->DecodedFormat(&playFormat) == B_OK)
  78                                 && (playFormat.type == B_MEDIA_RAW_AUDIO)) {
  79                         playTrack = track;
  80                         break;
  81                 }
  82                 if (track)
  83                         playFile->ReleaseTrack(track);
  84         }
  85
  86         // Good relations with the Wookiees, I have.
  87         signal(SIGINT, keyb_int);
  88
  89         finished = create_sem(0, "finish wait");
  90
  91         printf("Playing file...\n");
  92
  93         // Execute Plan 66!
  94         player = new BSoundPlayer(&playFormat.u.raw_audio, "playfile", play_buffer);
  95         player->SetVolume(1.0f);
  96
  97         // Join me, Padmé and together we can rule this galaxy.
  98         player->SetHasData(true);
  99         player->Start();
 100
 101         acquire_sem(finished);
 102
 103         if (interrupt == true) {
 104                 // Once more, the Sith will rule the galaxy.
 105                 printf("Interrupted\n");
 106                 player->Stop();
 107                 kill_thread(reader);
 108         }
 109
 110         printf("Playback finished.\n");
 111
 112         delete player;
 113         delete playFile;
 114 }