Vp3DecodeContext Struct Reference


Data Fields
AVCodecContext *	avctx
int	theora
int	theora_tables
int	version
int	width
int	height
int	chroma_x_shift
int	chroma_y_shift
AVFrame	golden_frame
AVFrame	last_frame
AVFrame	current_frame
int	keyframe
DSPContext	dsp
int	flipped_image
int	last_slice_end
int	qps [3]
int	nqps
int	last_qps [3]
int	superblock_count
int	y_superblock_width
int	y_superblock_height
int	y_superblock_count
int	c_superblock_width
int	c_superblock_height
int	c_superblock_count
int	u_superblock_start
int	v_superblock_start
unsigned char *	superblock_coding
int	macroblock_count
int	macroblock_width
int	macroblock_height
int	fragment_count
int	fragment_width [2]
int	fragment_height [2]
Vp3Fragment *	all_fragments
int	fragment_start [3]
int	data_offset [3]
int8_t(*[2]	motion_val )[2]
ScanTable	scantable
uint16_t	coded_dc_scale_factor [64]
uint32_t	coded_ac_scale_factor [64]
uint8_t	base_matrix [384][64]
uint8_t	qr_count [2][3]
uint8_t	qr_size [2][3][64]
uint16_t	qr_base [2][3][64]
int16_t *	dct_tokens [3][64]
	This is a list of all tokens in bitstream order.
int16_t *	dct_tokens_base
int	num_coded_frags [3][64]
	number of blocks that contain DCT coefficients at the given level or higher
int	total_num_coded_frags
int *	coded_fragment_list [3]
VLC	dc_vlc [16]
VLC	ac_vlc_1 [16]
VLC	ac_vlc_2 [16]
VLC	ac_vlc_3 [16]
VLC	ac_vlc_4 [16]
VLC	superblock_run_length_vlc
VLC	fragment_run_length_vlc
VLC	mode_code_vlc
VLC	motion_vector_vlc
int16_t	qmat [3][2][3][64]
int *	superblock_fragments
unsigned char *	macroblock_coding
uint8_t	edge_emu_buffer [9 *2048]
int8_t	qscale_table [2048]
int	hti
unsigned int	hbits
int	entries
int	huff_code_size
uint32_t	huffman_table [80][32][2]
uint8_t	filter_limit_values [64]
int	bounding_values_array [256+2]

Detailed Description

Definition at line 126 of file vp3.c.

Field Documentation

VLC Vp3DecodeContext::ac_vlc_1[16]

Definition at line 213 of file vp3.c.

Referenced by unpack_dct_coeffs(), vp3_decode_end(), and vp3_decode_init().

VLC Vp3DecodeContext::ac_vlc_2[16]

Definition at line 214 of file vp3.c.

Referenced by unpack_dct_coeffs(), vp3_decode_end(), and vp3_decode_init().

VLC Vp3DecodeContext::ac_vlc_3[16]

Definition at line 215 of file vp3.c.

Referenced by unpack_dct_coeffs(), vp3_decode_end(), and vp3_decode_init().

VLC Vp3DecodeContext::ac_vlc_4[16]

Definition at line 216 of file vp3.c.

Referenced by unpack_dct_coeffs(), vp3_decode_end(), and vp3_decode_init().

Vp3Fragment* Vp3DecodeContext::all_fragments

Definition at line 163 of file vp3.c.

Referenced by apply_loop_filter(), render_slice(), reverse_dc_prediction(), unpack_block_qpis(), unpack_modes(), unpack_superblocks(), unpack_vectors(), unpack_vlcs(), vp3_decode_end(), and vp3_decode_init().

AVCodecContext* Vp3DecodeContext::avctx

Definition at line 127 of file vp3.c.

Referenced by render_slice(), unpack_dct_coeffs(), unpack_superblocks(), unpack_vlcs(), vp3_decode_init(), vp3_dequant(), and vp3_draw_horiz_band().

uint8_t Vp3DecodeContext::base_matrix[384][64]

Definition at line 174 of file vp3.c.

Referenced by init_dequantizer(), and vp3_decode_init().

int Vp3DecodeContext::bounding_values_array[256+2]

Definition at line 248 of file vp3.c.

Referenced by apply_loop_filter(), and init_loop_filter().

int Vp3DecodeContext::c_superblock_count

Definition at line 150 of file vp3.c.

Referenced by unpack_superblocks(), and vp3_decode_init().

int Vp3DecodeContext::c_superblock_height

Definition at line 149 of file vp3.c.

Referenced by init_block_mapping(), render_slice(), and vp3_decode_init().

int Vp3DecodeContext::c_superblock_width

Definition at line 148 of file vp3.c.

Referenced by init_block_mapping(), render_slice(), and vp3_decode_init().

int Vp3DecodeContext::chroma_x_shift

Definition at line 131 of file vp3.c.

Referenced by render_slice(), unpack_modes(), unpack_vectors(), and vp3_decode_init().

int Vp3DecodeContext::chroma_y_shift

Definition at line 131 of file vp3.c.

Referenced by render_slice(), unpack_modes(), unpack_vectors(), and vp3_decode_init().

uint32_t Vp3DecodeContext::coded_ac_scale_factor[64]

Definition at line 173 of file vp3.c.

Referenced by init_dequantizer(), and vp3_decode_init().

uint16_t Vp3DecodeContext::coded_dc_scale_factor[64]

Definition at line 172 of file vp3.c.

Referenced by init_dequantizer(), and vp3_decode_init().

int* Vp3DecodeContext::coded_fragment_list[3]

Definition at line 210 of file vp3.c.

Referenced by unpack_block_qpis(), unpack_superblocks(), unpack_vlcs(), vp3_decode_end(), and vp3_decode_init().

AVFrame Vp3DecodeContext::current_frame

Definition at line 134 of file vp3.c.

Referenced by apply_loop_filter(), render_slice(), vp3_decode_init(), and vp3_draw_horiz_band().

int Vp3DecodeContext::data_offset[3]

Definition at line 165 of file vp3.c.

Referenced by apply_loop_filter(), and render_slice().

VLC Vp3DecodeContext::dc_vlc[16]

Definition at line 212 of file vp3.c.

Referenced by unpack_dct_coeffs(), vp3_decode_end(), and vp3_decode_init().

int16_t* Vp3DecodeContext::dct_tokens[3][64]

This is a list of all tokens in bitstream order.

Reordering takes place by pulling from each level during IDCT. As a consequence, IDCT must be in Hilbert order, making the minimum slice height 64 for 4:2:0 and 32 otherwise. The 32 different tokens with up to 12 bits of extradata are collapsed into 3 types, packed as follows: (from the low to high bits)

2 bits: type (0,1,2) 0: EOB run, 14 bits for run length (12 needed) 1: zero run, 7 bits for run length 7 bits for the next coefficient (3 needed) 2: coefficient, 14 bits (11 needed)

Coefficients are signed, so are packed in the highest bits for automatic sign extension.

Definition at line 196 of file vp3.c.

Referenced by unpack_dct_coeffs(), unpack_vlcs(), and vp3_dequant().

int16_t* Vp3DecodeContext::dct_tokens_base

Definition at line 197 of file vp3.c.

Referenced by unpack_dct_coeffs(), vp3_decode_end(), and vp3_decode_init().

DSPContext Vp3DecodeContext::dsp

Definition at line 136 of file vp3.c.

Referenced by apply_loop_filter(), init_dequantizer(), render_slice(), and vp3_decode_init().

uint8_t Vp3DecodeContext::edge_emu_buffer[9 *2048]

Definition at line 237 of file vp3.c.

Referenced by render_slice().