image.h File Reference

prototypes for image.c More...

#include "mbuffer.h"

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Functions
void	calculate_frame_no (ImageParameters *p_Img, StorablePicture *p)
void	find_snr (ImageParameters *p_Img, StorablePicture *p, int *p_ref)
int	picture_order (ImageParameters *p_Img)
void	decode_one_slice (Slice *currSlice)
int	read_new_slice (Slice *currSlice)
void	exit_picture (ImageParameters *p_Img, StorablePicture **dec_picture)
int	decode_one_frame (ImageParameters *p_Img)
int	is_new_picture (StorablePicture *dec_picture, Slice *currSlice, OldSliceParams *p_old_slice)
void	init_old_slice (OldSliceParams *p_old_slice)
void	copy_dec_picture_JV (ImageParameters *p_Img, StorablePicture *dst, StorablePicture *src)
void	frame_postprocessing (ImageParameters *p_Img)
void	field_postprocessing (ImageParameters *p_Img)

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Detailed Description

prototypes for image.c

Definition in file image.h.

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Function Documentation

void calculate_frame_no	(	ImageParameters *	p_Img,
		StorablePicture *	p
	)

Calculate the value of frame_no.

Definition at line 733 of file image.c.

Referenced by direct_output(), and insert_picture_in_dpb().

void copy_dec_picture_JV	(	ImageParameters *	p_Img,
		StorablePicture *	dst,
		StorablePicture *	src
	)

copy StorablePicture *src -> StorablePicture *dst for 4:4:4 Independent mode

Definition at line 1751 of file image.c.

References storable_picture::dec_ref_pic_marking_buffer, no_mem_exit(), and storable_picture::tone_mapping_lut.

Referenced by init_picture().

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int decode_one_frame

(

ImageParameters *

p_Img

)

decodes one I- or P-frame

Definition at line 540 of file image.c.

References EOS, Error_tracking(), exit_picture(), linfo_cbp_inter_normal(), linfo_cbp_inter_other(), linfo_cbp_intra_normal(), linfo_cbp_intra_other(), read_new_slice(), and SOP.

Referenced by main().

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void decode_one_slice

(

Slice *

currSlice

)

decodes one slice

Definition at line 1815 of file image.c.

References change_plane_JV(), compute_colocated(), compute_colocated_JV(), decode_one_macroblock(), ercWriteMBMODEandMV(), exit_macroblock(), exit_slice(), slice::num_ref_idx_l0_active, slice::num_ref_idx_l1_active, set_ref_pic_num(), setup_slice_methods(), slice::slice_type, and start_macroblock().

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void exit_picture	(	ImageParameters *	p_Img,
		StorablePicture **	dec_picture
	)

finish decoding of a picture, conceal errors and store it into the DPB

this is always true at the beginning of a picture

mark the start of the first segment

generate the segments according to the macroblock map

stop current segment

mark current segment as lost or OK

next segment

start new segment

save start MB for this segment

mark end of the last segment

call the right error concealment function depending on the frame type.

Definition at line 1290 of file image.c.

References change_plane_JV(), DeblockPicture(), ercConcealInterFrame(), ercConcealIntraFrame(), ercMarkCurrSegmentLost(), ercMarkCurrSegmentOK(), ercStartSegment(), ercStopSegment(), field_postprocessing(), frame_postprocessing(), make_frame_picture_JV(), store_picture_in_dpb(), and YUV400.

Referenced by activate_sps(), decode_one_frame(), and init_picture().

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void field_postprocessing

(

ImageParameters *

p_Img

)

Prepare field and frame buffer after field decoding.

Definition at line 1737 of file image.c.

Referenced by exit_picture().

void find_snr	(	ImageParameters *	p_Img,
		StorablePicture *	p,
		int *	p_ref
	)

Find PSNR for all three components.Compare decoded frame with the original sequence. Read p_Inp->jumpd frames to reflect frame skipping.

Parameters:

	p_Img	image encoding parameters for current picture
	p	picture to be compared
	p_ref	file pointer piont to reference YUV reference file

Definition at line 761 of file image.c.

References buffer2img(), storable_picture::imgUV, storable_picture::imgY, no_mem_exit(), and YUV400.

Referenced by direct_output(), and insert_picture_in_dpb().

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void frame_postprocessing

(

ImageParameters *

p_Img

)

Prepare field and frame buffer after frame decoding.

Definition at line 1727 of file image.c.

Referenced by exit_picture().

void init_old_slice

(

OldSliceParams *

p_old_slice

)

set defaults for old_slice NAL unit of a picture"

Definition at line 1590 of file image.c.

Referenced by main().

int is_new_picture	(	StorablePicture *	dec_picture,
		Slice *	currSlice,
		OldSliceParams *	p_old_slice
	)

detect if current slice is "first VCL NAL unit of a picture"

Definition at line 1676 of file image.c.

References slice::pic_parameter_set_id.

Referenced by read_new_slice().

int picture_order

(

ImageParameters *

p_Img

)

return the poc of p_Img as per (8-1) JVT-F100d2 POC200301

Definition at line 854 of file header.c.

int read_new_slice

(

Slice *

currSlice

)

Reads new slice from bit_stream.

Definition at line 967 of file image.c.

References alloc_colocated(), AllocNALU(), arideco_start_decoding(), assign_quant_params(), Bitstream::bitstream_length, nalu_t::buf, slice::Co_located_JV, Bitstream::code_len, slice::dp_mode, slice::dpB_NotPresent, slice::dpC_NotPresent, Bitstream::ei_flag, slice::ei_flag, EOS, error(), FirstPartOfSliceHeader(), fmo_init(), Bitstream::frame_bitoffset, free_colocated(), FreeNALU(), init_lists(), init_mbaff_lists(), init_picture(), InterpretSEIMessage(), is_new_picture(), nalu_t::len, nalu_t::lost_packets, MAX_CODED_FRAME_SIZE, nalu_t::nal_reference_idc, nalu_t::nal_unit_type, PAR_DP_1, PAR_DP_3, slice::partArr, slice::pic_parameter_set_id, RBSPtoSODB(), Bitstream::read_len, read_next_nalu(), RestOfSliceHeader(), slice::slice_type, SOP, SOS, slice::start_mb_nr, Bitstream::streamBuffer, and ue_v().

Referenced by decode_one_frame().

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