libavcodec/ivi_dsp.h File Reference

DSP functions (inverse transforms, motion compensations, wavelet recompostion) for Indeo Video Interactive codecs. More...

#include "avcodec.h"
#include "ivi_common.h"

Go to the source code of this file.

Functions
void	ff_ivi_recompose53 (const IVIPlaneDesc *plane, uint8_t *dst, const int dst_pitch, const int num_bands)
	5/3 wavelet recomposition filter for Indeo5
void	ff_ivi_inverse_slant_8x8 (const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
	two-dimensional inverse slant 8x8 transform
void	ff_ivi_inverse_slant_4x4 (const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
	two-dimensional inverse slant 4x4 transform
void	ff_ivi_dc_slant_2d (const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
	DC-only two-dimensional inverse slant transform.
void	ff_ivi_row_slant8 (const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
	inverse 1D row slant transform
void	ff_ivi_col_slant8 (const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
	inverse 1D column slant transform
void	ff_ivi_dc_row_slant (const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
	DC-only inverse row slant transform.
void	ff_ivi_dc_col_slant (const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
	DC-only inverse column slant transform.
void	ff_ivi_put_pixels_8x8 (const int32_t *in, int16_t *out, uint32_t pitch, const uint8_t *flags)
	Copy the pixels into the frame buffer.
void	ff_ivi_put_dc_pixel_8x8 (const int32_t *in, int16_t *out, uint32_t pitch, int blk_size)
	Copy the DC coefficient into the first pixel of the block and zero all others.
void	ff_ivi_mc_8x8_delta (int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type)
	8x8 block motion compensation with adding delta
void	ff_ivi_mc_4x4_delta (int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type)
	4x4 block motion compensation with adding delta
void	ff_ivi_mc_8x8_no_delta (int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type)
	motion compensation without adding delta
void	ff_ivi_mc_4x4_no_delta (int16_t *buf, const int16_t *ref_buf, uint32_t pitch, int mc_type)
	4x4 block motion compensation without adding delta

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Detailed Description

DSP functions (inverse transforms, motion compensations, wavelet recompostion) for Indeo Video Interactive codecs.

Definition in file ivi_dsp.h.

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Function Documentation

void ff_ivi_col_slant8	(	const int32_t *	in,
		int16_t *	out,
		uint32_t	pitch,
		const uint8_t *	flags
	)

inverse 1D column slant transform

Parameters:

[in]	in	pointer to the vector of transform coefficients
[out]	out	pointer to the output buffer (frame)
[in]	pitch	pitch to move to the next y line
[in]	flags	pointer to the array of column flags: != 0 - non_empty column, 0 - empty one (this array must be filled by caller)

Definition at line 362 of file ivi_dsp.c.

Referenced by decode_gop_header().

void ff_ivi_dc_col_slant	(	const int32_t *	in,
		int16_t *	out,
		uint32_t	pitch,
		int	blk_size
	)

DC-only inverse column slant transform.

Definition at line 389 of file ivi_dsp.c.

Referenced by decode_gop_header().

void ff_ivi_dc_row_slant	(	const int32_t *	in,
		int16_t *	out,
		uint32_t	pitch,
		int	blk_size
	)

DC-only inverse row slant transform.

Definition at line 344 of file ivi_dsp.c.

Referenced by decode_gop_header().

void ff_ivi_dc_slant_2d	(	const int32_t *	in,
		int16_t *	out,
		uint32_t	pitch,
		int	blk_size
	)

DC-only two-dimensional inverse slant transform.

Performing the inverse slant transform in this case is equivalent to spreading (DC_coeff + 1)/2 over the whole block. It works much faster than performing the slant transform on a vector of zeroes.

Parameters:

[in]	in	pointer to the dc coefficient
[out]	out	pointer to the output buffer (frame)
[in]	pitch	pitch to move to the next y line
[in]	blk_size	transform block size

Definition at line 311 of file ivi_dsp.c.

Referenced by decode_gop_header().

void ff_ivi_inverse_slant_4x4	(	const int32_t *	in,
		int16_t *	out,
		uint32_t	pitch,
		const uint8_t *	flags
	)

two-dimensional inverse slant 4x4 transform

Parameters:

[in]	in	pointer to the vector of transform coefficients
[out]	out	pointer to the output buffer (frame)
[in]	pitch	pitch to move to the next y line
[in]	flags	pointer to the array of column flags: != 0 - non_empty column, 0 - empty one (this array must be filled by caller)

Definition at line 271 of file ivi_dsp.c.

Referenced by decode_gop_header().

void ff_ivi_inverse_slant_8x8	(	const int32_t *	in,
		int16_t *	out,
		uint32_t	pitch,
		const uint8_t *	flags
	)

two-dimensional inverse slant 8x8 transform

Parameters:

[in]	in	pointer to the vector of transform coefficients
[out]	out	pointer to the output buffer (frame)
[in]	pitch	pitch to move to the next y line
[in]	flags	pointer to the array of column flags: != 0 - non_empty column, 0 - empty one (this array must be filled by caller)

Definition at line 231 of file ivi_dsp.c.

Referenced by decode_gop_header().

void ff_ivi_mc_4x4_delta	(	int16_t *	buf,
		const int16_t *	ref_buf,
		uint32_t	pitch,
		int	mc_type
	)

4x4 block motion compensation with adding delta

Parameters:

[in,out]	buf	pointer to the block in the current frame buffer containing delta
[in]	ref_buf	pointer to the corresponding block in the reference frame
[in]	pitch	pitch for moving to the next y line
[in]	mc_type	interpolation type

Referenced by ff_ivi_decode_blocks().

void ff_ivi_mc_4x4_no_delta	(	int16_t *	buf,
		const int16_t *	ref_buf,
		uint32_t	pitch,
		int	mc_type
	)

4x4 block motion compensation without adding delta

Parameters:

[in,out]	buf	pointer to the block in the current frame receiving the result
[in]	ref_buf	pointer to the corresponding block in the reference frame
[in]	pitch	pitch for moving to the next y line
[in]	mc_type	interpolation type

Referenced by ff_ivi_decode_blocks(), and ff_ivi_process_empty_tile().

void ff_ivi_mc_8x8_delta	(	int16_t *	buf,
		const int16_t *	ref_buf,
		uint32_t	pitch,
		int	mc_type
	)

8x8 block motion compensation with adding delta

Parameters:

[in,out]	buf	pointer to the block in the current frame buffer containing delta
[in]	ref_buf	pointer to the corresponding block in the reference frame
[in]	pitch	pitch for moving to the next y line
[in]	mc_type	interpolation type

Referenced by ff_ivi_decode_blocks().

void ff_ivi_mc_8x8_no_delta	(	int16_t *	buf,
		const int16_t *	ref_buf,
		uint32_t	pitch,
		int	mc_type
	)

motion compensation without adding delta

Parameters:

[in,out]	buf	pointer to the block in the current frame receiving the result
[in]	ref_buf	pointer to the corresponding block in the reference frame
[in]	pitch	pitch for moving to the next y line
[in]	mc_type	interpolation type

Referenced by ff_ivi_decode_blocks(), and ff_ivi_process_empty_tile().

void ff_ivi_put_dc_pixel_8x8	(	const int32_t *	in,
		int16_t *	out,
		uint32_t	pitch,
		int	blk_size
	)

Copy the DC coefficient into the first pixel of the block and zero all others.

Definition at line 413 of file ivi_dsp.c.

Referenced by decode_gop_header().

void ff_ivi_put_pixels_8x8	(	const int32_t *	in,
		int16_t *	out,
		uint32_t	pitch,
		const uint8_t *	flags
	)

Copy the pixels into the frame buffer.

Definition at line 403 of file ivi_dsp.c.

Referenced by decode_gop_header().

void ff_ivi_recompose53	(	const IVIPlaneDesc *	plane,
		uint8_t *	dst,
		const int	dst_pitch,
		const int	num_bands
	)

5/3 wavelet recomposition filter for Indeo5

Parameters:

[in]	plane	pointer to the descriptor of the plane being processed
[out]	dst	pointer to the destination buffer
[in]	dst_pitch	pitch of the destination buffer
[in]	num_bands	number of wavelet bands to be processed

Definition at line 35 of file ivi_dsp.c.

Referenced by decode_frame().

void ff_ivi_row_slant8	(	const int32_t *	in,
		int16_t *	out,
		uint32_t	pitch,
		const uint8_t *	flags
	)

inverse 1D row slant transform

Parameters:

[in]	in	pointer to the vector of transform coefficients
[out]	out	pointer to the output buffer (frame)
[in]	pitch	pitch to move to the next y line
[in]	flags	pointer to the array of column flags (unused here)

Definition at line 324 of file ivi_dsp.c.

Referenced by decode_gop_header().