dungeon_crawler: prototype/src/audio/stream.h annotate

dungeon_crawler

music playback bugfixing

author	John Tsiombikas <nuclear@member.fsf.org>
date	Wed, 19 Sep 2012 08:19:10 +0300
parents	995191474cc0
children	f9b8bbebc9b3

rev	line source
nuclear@53	1 #ifndef AUDIO_STREAM_H_
nuclear@53	2 #define AUDIO_STREAM_H_
nuclear@53	3
nuclear@53	4 #include <thread>
nuclear@55	5 #include <mutex>
nuclear@55	6
nuclear@55	7 #define AUDIO_BUFFER_MSEC 1000
nuclear@55	8 #define AUDIO_BUFFER_SAMPLES (AUDIO_BUFFER_MSEC * 44100 / 1000)
nuclear@55	9 #define AUDIO_BUFFER_BYTES (AUDIO_BUFFER_SAMPLES * 2 * 2)
nuclear@53	10
nuclear@54	11 struct AudioStreamBuffer {
nuclear@55	12 char samples[AUDIO_BUFFER_BYTES];
nuclear@54	13 int num_samples;
nuclear@54	14 int channels;
nuclear@54	15 int sample_rate;
nuclear@54	16 };
nuclear@54	17
nuclear@55	18 enum class PlayMode { once, loop };
nuclear@55	19
nuclear@53	20 class AudioStream {
nuclear@53	21 private:
nuclear@53	22 std::thread play_thread;
nuclear@55	23 std::mutex mutex;
nuclear@55	24
nuclear@54	25 bool done, loop;
nuclear@54	26 unsigned int poll_interval;
nuclear@54	27 unsigned int alsrc;
nuclear@53	28
nuclear@54	29 virtual bool more_samples(AudioStreamBuffer *buf) = 0;
nuclear@54	30
nuclear@54	31 void poll_loop();
nuclear@53	32
nuclear@53	33 public:
nuclear@54	34 AudioStream();
nuclear@53	35 virtual ~AudioStream();
nuclear@53	36
nuclear@55	37 void play(enum PlayMode mode);
nuclear@53	38 void stop();
nuclear@54	39
nuclear@54	40 virtual void rewind() = 0;
nuclear@53	41 };
nuclear@53	42
nuclear@53	43 #endif // AUDIO_STREAM_H_