leviathan-2.0

src/song.cpp

@@ -0,0 +1,115 @@
+#include <string>
+#include "song.h"
+#pragma comment(lib, "strmiids.lib")
+#pragma comment(lib, "ComCtl32.lib")
+#pragma comment(lib, "winmm.lib")
+
+#pragma comment(lib, "strmbase.lib")
+
+using namespace Leviathan;
+
+Song::Song()
+{
+}
+
+Song::Song(LPCWSTR path) : playing(false)
+{
+	__int64 trackLength;
+	IGraphBuilder * graph;
+
+	CoInitialize(0);
+	CoCreateInstance(CLSID_FilterGraph, 0, CLSCTX_INPROC, IID_IGraphBuilder, (void**)&graph);
+
+	graph->QueryInterface(IID_IMediaControl, (void**)&mediaControl);
+	graph->QueryInterface(IID_IMediaSeeking, (void**)&mediaSeeking);
+	graph->QueryInterface(IID_IBasicAudio, (void**)&audioControl);
+	audioControl->put_Volume(long(-90000));
+
+	HRESULT hr = graph->RenderFile(path, 0);
+
+	if (hr == S_OK)
+		printf("Audio file opened successfully\n");
+	else
+		printf("Failed to open audio file\n");
+
+	graph->Release();
+
+	mediaSeeking->SetTimeFormat(&TIME_FORMAT_MEDIA_TIME);
+	mediaSeeking->GetDuration(&trackLength);
+	length = (long double)(trackLength) / (long double)10000000.0;
+
+	__int64 position = 0;
+	mediaSeeking->SetPositions(&position, AM_SEEKING_AbsolutePositioning, &position, AM_SEEKING_NoPositioning);
+	pause();
+}
+
+Song::~Song()
+{
+	audioControl->Release();
+	mediaControl->Release();
+	mediaSeeking->Release();
+}
+
+int Song::play()
+{
+	mediaControl->Run();
+	playing = true;
+	return 0;
+}
+
+int Song::pause()
+{
+	mediaControl->Stop();
+	playing = false;
+	return 0;
+}
+
+int Song::toggle()
+{
+	playing = !playing;
+	if (playing)
+		play();
+	else
+		pause();
+	return 0;
+}
+
+bool Song::is_playing()
+{
+	OAFilterState state;
+	mediaControl->GetState(INFINITE, &state);
+	__int64 trackLength, position;
+	mediaSeeking->GetDuration(&trackLength);
+	mediaSeeking->GetCurrentPosition(&position);
+	return position<trackLength;
+}
+
+int Song::seek(long double position)
+{
+	if (position>length)
+		position = length;
+	if (position<.0)
+		position = .0;
+
+	__int64 seekPosition = __int64(10000000.0*position);
+
+	if (playing)
+		mediaControl->Stop();
+	mediaSeeking->SetPositions(&seekPosition, AM_SEEKING_AbsolutePositioning, &seekPosition, AM_SEEKING_NoPositioning);
+	if (playing)
+		mediaControl->Run();
+
+	return 0;
+}
+
+long double Song::getTime()
+{
+	__int64 position;
+	mediaSeeking->GetCurrentPosition(&position);
+	return (long double)(position) / (long double)10000000.0;
+}
+
+long double Song::getLength()
+{
+	return length;
+}