mdct.c File Reference

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Detailed Description

MDCT/IMDCT transforms.

Definition in file mdct.c.

Go to the source code of this file.

Functions
int	ff_mdct_init (MDCTContext *s, int nbits, int inverse)
	init MDCT or IMDCT computation.
void	ff_imdct_calc (MDCTContext *s, FFTSample *output, const FFTSample *input, FFTSample *tmp)
	Compute inverse MDCT of size N = 2^nbits.
void	ff_mdct_calc (MDCTContext *s, FFTSample *out, const FFTSample *input, FFTSample *tmp)
	Compute MDCT of size N = 2^nbits.
void	ff_mdct_end (MDCTContext *s)

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Function Documentation

int ff_mdct_init	(	MDCTContext *	s,
		int	nbits,
		int	inverse
	)

init MDCT or IMDCT computation.

Definition at line 31 of file mdct.c.

Referenced by ac3_decode_init(), create_vorbis_context(), decode_init(), encode_init(), init_atrac3_transforms(), init_cook_mlt(), main(), vorbis_parse_id_hdr(), and wma_decode_init().

void ff_imdct_calc	(	MDCTContext *	s,
		FFTSample *	output,
		const FFTSample *	input,
		FFTSample *	tmp
	)

Compute inverse MDCT of size N = 2^nbits.

Parameters:

	output	N samples
	input	N/2 samples
	tmp	N/2 samples

Definition at line 79 of file mdct.c.

Referenced by ff_fft_init(), and main().

void ff_mdct_calc	(	MDCTContext *	s,
		FFTSample *	out,
		const FFTSample *	input,
		FFTSample *	tmp
	)

Compute MDCT of size N = 2^nbits.

Parameters:

	input	N samples
	out	N/2 samples
	tmp	temporary storage of N/2 samples

Definition at line 131 of file mdct.c.

Referenced by apply_window_and_mdct(), and main().

void ff_mdct_end

(

MDCTContext *

s

)

Definition at line 172 of file mdct.c.

Referenced by ac3_decode_end(), cook_decode_close(), decode_end(), ff_wma_end(), main(), vorbis_encode_close(), and vorbis_free().