src/crossfade.h File Reference

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Functions
unsigned	cross_fade_calc (float duration, float total_time, const struct audio_format *af, const struct audio_format *old_format, unsigned max_chunks)
	Calculate how many music pipe chunks should be used for crossfading.
void	cross_fade_apply (struct music_chunk *a, const struct music_chunk *b, const struct audio_format *format, unsigned int current_chunk, unsigned int num_chunks)
	Applies cross fading to two chunks, i.e.

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Function Documentation

void cross_fade_apply	(	struct music_chunk *	a,
		const struct music_chunk *	b,
		const struct audio_format *	format,
		unsigned int	current_chunk,
		unsigned int	num_chunks
	)

Applies cross fading to two chunks, i.e.

mixes these chunks. Internally, this calls pcm_mix().

Parameters:

	a	the chunk in the current song (and the destination chunk)
	b	the according chunk in the new song
	format	the audio format of both chunks (must be the same)
	current_chunk	the relative index of the current chunk
	num_chunks	the number of chunks used for cross fading

unsigned cross_fade_calc	(	float	duration,
		float	total_time,
		const struct audio_format *	af,
		const struct audio_format *	old_format,
		unsigned	max_chunks
	)

Calculate how many music pipe chunks should be used for crossfading.

Parameters:

	duration	the requested crossfade duration
	total_time	total_time the duration of the new song
	af	the audio format of the new song
	old_format	the audio format of the current song
	max_chunks	the maximum number of chunks

Returns:

the number of chunks for crossfading, or 0 if cross fading should be disabled for this song change