102 lines
2.0 KiB
C++
102 lines
2.0 KiB
C++
/**
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* Copyright 2013 (c) Anna Schumaker.
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*/
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#ifndef OCARINA_CORE_AUDIO_H
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#define OCARINA_CORE_AUDIO_H
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extern "C" {
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#include <core/tags/track.h>
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}
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#include <gst/gst.h>
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#include <string>
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#include <stdint.h>
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struct audio_ops {
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/* Called when a track is loaded. */
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void (*on_load)(struct track *, GstState);
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/* Called when the automatic pause state changes. */
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void (*on_config_pause)(int);
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};
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/**
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* The audio driver class gives us an interface for using multiple
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* audio frameworks for audio playback.
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*/
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class AudioDriver {
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public:
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AudioDriver(); /**< Default AudioDriver constructor. */
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virtual ~AudioDriver(); /**< AudioDriver destructor. */
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/**
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* Called to handle reaching the end-of-stream.
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*/
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void eos();
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};
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/**
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* Namespace for higher-level audio controls.
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*/
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namespace audio
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{
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/**
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* Called to access an audio driver.
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*
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* @return The current driver used by the application.
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*/
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AudioDriver *get_driver();
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};
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/* Called to initialize the audio manager. */
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void audio_init(int *, char ***, struct audio_ops *);
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/* Called to deinitialize the audio manager. */
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void audio_deinit();
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/* Called to load a track for playback. */
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bool audio_load(struct track *);
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/* Called to get the current track. */
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struct track *audio_cur_track();
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/* Called to get the current playback state. */
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GstState audio_cur_state();
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/* Called to begin playback. */
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bool audio_play();
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/* Called to pause playback. */
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bool audio_pause();
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/* Called to stop playback. */
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bool audio_stop();
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/* Called to seek playback to a specific offset, in nanoseconds. */
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bool audio_seek(gint64);
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/* Called to find the current playback position, in nanoseconds. */
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gint64 audio_position();
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/* Called to find the duration of the current track. */
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gint64 audio_duration();
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/* Called to load the next track. */
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struct track *audio_next();
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/* Called to load the previous track. */
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struct track *audio_prev();
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/* Called to configure automatic pausing. */
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void audio_pause_after(int);
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GstElement *audio_get_player();
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#endif /* OCARINA_CORE_AUDIO_H */
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