1 files changed, 80 insertions, 0 deletions
diff --git a/nebu/audio/SourceSample.cpp b/nebu/audio/SourceSample.cpp
new file mode 100644
index 0000000..8e8ffb5
--- /dev/null
+++ b/nebu/audio/SourceSample.cpp
@@ -0,0 +1,80 @@
+#include "audio/nebu_SourceSample.h"
+
+#include <assert.h>
+#include <string.h>
+
+namespace Sound {
+  SourceSample::SourceSample(System *system) { 
+    _system = system;
+
+    _buffer = NULL;
+    _buffersize = 8192;
+
+    _position = 0;
+    _decoded = 0;
+  }
+
+  SourceSample::~SourceSample() {
+    // fprintf(stderr, "nebu_SourceSample destructor called\n");
+    if(_buffer)
+      delete _buffer;
+    // Source::~Source();
+  }
+
+  void SourceSample::Load(char *filename) {
+#define BUFSIZE 1024 * 1024
+    SDL_RWops *rwops;
+
+    rwops = SDL_RWFromFile(filename, "rb");
+
+    Sound_Sample *sample = Sound_NewSample(rwops, NULL,
+					   _system->GetAudioInfo(),
+					   _buffersize );
+    if(sample == NULL) {
+      fprintf(stderr, "[error] failed loading sample from '%s': %s\n", 
+	      filename, Sound_GetError());
+      return;
+    }
+    
+    Sound_DecodeAll(sample);
+
+    _buffersize = sample->buffer_size;
+    _buffer = new Uint8[_buffersize];
+    memcpy(_buffer, sample->buffer, _buffersize);
+
+    Sound_FreeSample(sample);
+    
+    // fprintf(stderr, "done decoding sample '%s'\n", filename);
+    _position = 0;
+  }
+
+  int SourceSample::Mix(Uint8 *data, int len) {
+    if(_buffer == NULL)
+      return 0;
+
+    int volume = (int)(_volume * SDL_MIX_MAXVOLUME);
+    assert(len < _buffersize);
+
+    if(len < _buffersize - _position) {
+      SDL_MixAudio(data, _buffer + _position, len, volume);
+      _position += len;
+    } else { 
+      SDL_MixAudio(data, _buffer + _position, _buffersize - _position,
+		   volume);
+      len -= _buffersize - _position;
+
+      // printf("end of sample reached!\n");
+      if(_loop) {
+	if(_loop != 255) 
+	  _loop--;
+
+	_position = 0;
+	SDL_MixAudio(data, _buffer + _position, len, volume);
+	_position += len;
+      } else {
+	_isPlaying = 0;
+      }
+    }
+    return 1;
+  }
+}