X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Faudio%2Fstream.h;fp=src%2Faudio%2Fstream.h;h=9a2387b68f5975923a404a774a2c16acb44fce46;hb=fb11663a3654acd0132e71e5652e35b0ea72d544;hp=0000000000000000000000000000000000000000;hpb=536b7259fa8cc9d99170c5df84f2dca638ce5061;p=laserbrain_demo

diff --git a/src/audio/stream.h b/src/audio/stream.h
new file mode 100644
index 0000000..9a2387b
--- /dev/null
+++ b/src/audio/stream.h
@@ -0,0 +1,61 @@
+#ifndef STREAM_H_
+#define STREAM_H_
+
+#include <pthread.h>
+#include "audio.h"
+
+#define AUDIO_NUM_BUFFERS		8
+#define AUDIO_BUFFER_MSEC		32
+// TODO should the sampling rate be hardcoded?
+#define AUDIO_BUFFER_SAMPLES	(AUDIO_BUFFER_MSEC * 44100 / 1000)
+// TODO unhardcode the channels number
+#define AUDIO_BUFFER_BYTES		(AUDIO_BUFFER_SAMPLES * 2 * 2)
+
+enum AUDIO_PLAYMODE
+{
+	AUDIO_PLAYMODE_ONCE,
+	AUDIO_PLAYMODE_LOOP
+};
+
+struct AudioStreamBuffer {
+	char samples[AUDIO_BUFFER_BYTES];
+
+	int num_samples;
+	int channels;
+	int sample_rate;
+};
+
+class AudioStream {
+private:
+	pthread_t play_thread;
+	pthread_mutex_t mutex;
+
+	float volume, pitch;
+	bool done, loop;
+	unsigned int poll_interval;
+	unsigned int alsrc;
+
+	virtual bool more_samples(AudioStreamBuffer *buf) = 0;
+
+public:
+	void poll_loop();
+
+	AudioStream();
+	virtual ~AudioStream();
+
+	virtual bool open(const char *fname);
+	virtual void close();
+
+	virtual void set_volume(float vol);
+	virtual float get_volume() const;
+
+	virtual void set_pitch(float p);
+	virtual float get_pitch() const;
+
+	virtual void play(AUDIO_PLAYMODE mode);
+	virtual void stop();
+
+	virtual void rewind() = 0;
+};
+
+#endif  // AUDIO_STREAM_H_