85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
/*
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* Copyright 2013 (c) Anna Schumaker.
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*
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* The gst_init() function parses command line options passed to Ocarina
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* through argv. Use the command `gst-inspect-1.0 --help-gst` to find
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* what options are supported.
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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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#include <core/tags/track.h>
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#include <gst/gst.h>
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struct audio_callbacks {
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/* Called when a track is loaded. */
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void (*audio_cb_load)(struct track *);
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/* Called when playback state changes. */
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void (*audio_cb_state_change)(GstState);
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/* Called when the automatic pause state changes. */
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void (*audio_cb_config_pause)(int);
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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_callbacks *);
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/* Called to deinitialize the audio manager. */
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void audio_deinit();
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/* Called to force-save the current track. */
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void audio_save();
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/* Called to load either a track or file for playback. */
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bool audio_load(struct track *);
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bool audio_load_filepath(const gchar *);
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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 set the playback volume. */
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void audio_set_volume(unsigned int);
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/* Called to get the playback volume. */
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unsigned int audio_get_volume();
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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 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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#ifdef CONFIG_TESTING
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void test_audio_eos();
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void test_audio_error(GError *, gchar *);
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GstElement *test_audio_pipeline();
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#endif /* CONFIG_TESTING */
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#endif /* OCARINA_CORE_AUDIO_H */
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