FFmpeg: VP8Context Struct Reference

filter strength adjustment for the following macroblock modes: [0-3] - i16x16 (always zero) [4] - i4x4 [5] - zero mv [6] - inter modes except for zero or split mv [7] - split mv i16x16 modes never have any adjustment More...

int8_t ref [4]

filter strength adjustment for macroblocks that reference: [0] - intra / VP56_FRAME_CURRENT [1] - VP56_FRAME_PREVIOUS [2] - VP56_FRAME_GOLDEN [3] - altref / VP56_FRAME_GOLDEN2 More...

} lf_delta

uint8_t(* top_border )[16+8+8]

uint8_t(* top_nnz )[9]

VP56RangeCoder c

header context, includes mb modes and motion vectors More...

struct {

uint8_t segmentid [3]

uint8_t mbskip

uint8_t intra

uint8_t last

uint8_t golden

uint8_t pred16x16 [4]

uint8_t pred8x8c [3]

uint8_t token [4][16][3][NUM_DCT_TOKENS-1]

uint8_t mvc [2][19]

uint8_t scan [16]

} prob [2]

These are all of the updatable probabilities for binary decisions. More...

VP8Macroblock * macroblocks_base

int invisible

int update_last

update VP56_FRAME_PREVIOUS with the current one More...

int update_golden

VP56_FRAME_NONE if not updated, or which frame to copy if so. More...

int update_altref

int update_probabilities

If this flag is not set, all the probability updates are discarded after this frame is decoded. More...

int num_coeff_partitions

All coefficients are contained in separate arith coding contexts. More...

VP56RangeCoder coeff_partition [8]

VideoDSPContext vdsp

VP8DSPContext vp8dsp

H264PredContext hpc

vp8_mc_func put_pixels_tab [3][3][3]

VP8Frame frames [5]

uint8_t colorspace

0 is the only value allowed (meaning bt601) More...

uint8_t fullrange

whether we can skip clamping in dsp functions More...

int num_jobs

int mb_layout

This describes the macroblock memory layout. More...

void(* decode_mb_row_no_filter )(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)

void(* filter_mb_row )(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)

int vp7

int fade_present

Fade bit present in bitstream (VP7) More...

uint16_t inter_dc_pred [2][2]

Interframe DC prediction (VP7) [0] VP56_FRAME_PREVIOUS [1] VP56_FRAME_GOLDEN. More...

uint8_t feature_enabled [4]

Macroblock features (VP7) More...

uint8_t feature_present_prob [4]

uint8_t feature_index_prob [4][3]

uint8_t feature_value [4][4]

Detailed Description

Definition at line 136 of file vp8.h.

Field Documentation

VP8ThreadData* VP8Context::thread_data

Definition at line 137 of file vp8.h.

Referenced by decode_mb_row_no_filter(), filter_mb_row(), free_buffers(), update_dimensions(), vp78_decode_frame(), and vp78_decode_mb_row_sliced().

AVCodecContext* VP8Context::avctx

Definition at line 138 of file vp8.h.

Referenced by decode_mb_mode(), update_dimensions(), vp78_decode_init(), vp7_decode_frame_header(), vp7_fade_frame(), vp8_alloc_frame(), vp8_decode_frame_header(), vp8_find_free_buffer(), and vp8_release_frame().

VP8Frame* VP8Context::framep[4]

Definition at line 139 of file vp8.h.

Referenced by inter_predict(), prefetch_motion(), vp78_decode_frame(), vp7_fade_frame(), vp8_decode_flush_impl(), and vp8_find_free_buffer().

VP8Frame* VP8Context::next_framep[4]

Definition at line 140 of file vp8.h.

Referenced by vp78_decode_frame().

VP8Frame* VP8Context::curframe

Definition at line 141 of file vp8.h.

Referenced by decode_mb_row_no_filter(), filter_mb_row(), vp78_decode_frame(), and vp78_decode_mb_row_sliced().

VP8Frame* VP8Context::prev_frame

Definition at line 142 of file vp8.h.

Referenced by decode_mb_row_no_filter(), and vp78_decode_frame().

uint16_t VP8Context::mb_width

Definition at line 144 of file vp8.h.

Referenced by decode_intra4x4_modes(), decode_mb_row_no_filter(), decode_splitmvs(), filter_mb_row(), inter_predict(), intra_predict(), update_dimensions(), vp78_decode_frame(), vp78_decode_mv_mb_modes(), vp7_decode_frame_header(), vp7_decode_mvs(), vp7_fade_frame(), vp8_alloc_frame(), vp8_decode_frame_header(), and vp8_decode_mvs().

uint16_t VP8Context::mb_height

Definition at line 145 of file vp8.h.

Referenced by decode_mb_row_no_filter(), filter_mb_row(), inter_predict(), update_dimensions(), vp78_decode_frame(), vp78_decode_mb_row_sliced(), vp78_decode_mv_mb_modes(), vp7_decode_frame_header(), vp7_decode_mvs(), vp7_fade_frame(), vp8_alloc_frame(), and vp8_decode_frame_header().

int VP8Context::linesize

Definition at line 146 of file vp8.h.

Referenced by decode_mb_row_no_filter(), filter_mb(), filter_mb_row(), filter_mb_simple(), idct_mb(), inter_predict(), intra_predict(), prefetch_motion(), vp78_decode_frame(), and vp8_mc_part().

int VP8Context::uvlinesize

Definition at line 147 of file vp8.h.

Referenced by decode_mb_row_no_filter(), filter_mb(), filter_mb_row(), idct_mb(), inter_predict(), intra_predict(), prefetch_motion(), vp78_decode_frame(), and vp8_mc_part().

uint8_t VP8Context::keyframe

Definition at line 149 of file vp8.h.

Referenced by decode_mb_mode(), filter_mb(), vp78_decode_frame(), vp7_decode_frame_header(), vp7_fade_frame(), and vp8_decode_frame_header().

uint8_t VP8Context::deblock_filter

Definition at line 150 of file vp8.h.

Referenced by decode_mb_row_no_filter(), intra_predict(), vp78_decode_frame(), and vp78_decode_mb_row_sliced().

uint8_t VP8Context::mbskip_enabled

Definition at line 151 of file vp8.h.

Referenced by decode_mb_mode(), vp7_decode_frame_header(), and vp8_decode_frame_header().

uint8_t VP8Context::profile

Definition at line 152 of file vp8.h.

Referenced by inter_predict(), vp7_decode_frame_header(), vp7_decode_mvs(), vp8_decode_frame_header(), and vp8_mc_part().

VP8intmv VP8Context::mv_min

Definition at line 153 of file vp8.h.

Referenced by clamp_mv(), decode_mb_row_no_filter(), vp78_decode_frame(), vp78_decode_mb_row_sliced(), and vp78_decode_mv_mb_modes().

VP8intmv VP8Context::mv_max

Definition at line 154 of file vp8.h.

Referenced by clamp_mv(), decode_mb_row_no_filter(), vp78_decode_frame(), vp78_decode_mb_row_sliced(), and vp78_decode_mv_mb_modes().

int8_t VP8Context::sign_bias[4]

one state [0, 1] per ref frame type

Definition at line 156 of file vp8.h.

Referenced by vp7_decode_frame_header(), vp8_decode_frame_header(), and vp8_decode_mvs().

int VP8Context::ref_count[3]

Definition at line 157 of file vp8.h.

Referenced by decode_mb_mode(), prefetch_motion(), and vp78_decode_frame().

uint8_t VP8Context::enabled

whether each mb can have a different strength based on mode/ref

Definition at line 165 of file vp8.h.

Referenced by decode_mb_mode(), decode_mb_row_no_filter(), filter_level_for_mb(), vp78_decode_frame(), vp7_decode_frame_header(), vp8_decode_frame_header(), and vp8_get_quants().

uint8_t VP8Context::absolute_vals

Definition at line 166 of file vp8.h.

Referenced by filter_level_for_mb(), parse_segment_info(), and vp8_get_quants().

uint8_t VP8Context::update_map

Definition at line 167 of file vp8.h.

Referenced by decode_mb_mode(), decode_mb_row_no_filter(), parse_segment_info(), vp78_decode_frame(), vp7_decode_frame_header(), and vp8_decode_frame_header().

int8_t VP8Context::base_quant[4]

Definition at line 168 of file vp8.h.

Referenced by parse_segment_info(), and vp8_get_quants().

int8_t VP8Context::filter_level[4]

base loop filter level

Definition at line 169 of file vp8.h.

Referenced by filter_level_for_mb(), and parse_segment_info().

struct { ... } VP8Context::segmentation

Base parameters for segmentation, i.e.

per-macroblock parameters. These must be kept unchanged even if segmentation is not used for a frame, since the values persist between interframes.

Referenced by decode_mb_mode(), decode_mb_row_no_filter(), filter_level_for_mb(), parse_segment_info(), vp78_decode_frame(), vp7_decode_frame_header(), vp8_decode_frame_header(), and vp8_get_quants().

uint8_t VP8Context::simple

Definition at line 173 of file vp8.h.

Referenced by decode_mb_row_no_filter(), filter_mb_row(), intra_predict(), vp7_decode_frame_header(), and vp8_decode_frame_header().

uint8_t VP8Context::level

Definition at line 174 of file vp8.h.

Referenced by filter_level_for_mb(), vp78_decode_frame(), vp7_decode_frame_header(), and vp8_decode_frame_header().

uint8_t VP8Context::sharpness

Definition at line 175 of file vp8.h.

Referenced by filter_level_for_mb(), vp7_decode_frame_header(), and vp8_decode_frame_header().

struct { ... } VP8Context::filter

Referenced by decode_mb_row_no_filter(), filter_level_for_mb(), filter_mb_row(), intra_predict(), vp78_decode_frame(), vp7_decode_frame_header(), and vp8_decode_frame_header().

VP8Macroblock* VP8Context::macroblocks

Definition at line 178 of file vp8.h.

Referenced by decode_mb_row_no_filter(), filter_mb_row(), free_buffers(), update_dimensions(), vp78_decode_frame(), and vp7_decode_mvs().

uint8_t* VP8Context::intra4x4_pred_mode_top

Definition at line 180 of file vp8.h.

Referenced by decode_intra4x4_modes(), decode_mb_mode(), free_buffers(), update_dimensions(), and vp78_decode_frame().

uint8_t VP8Context::intra4x4_pred_mode_left[4]

Definition at line 181 of file vp8.h.

Referenced by decode_intra4x4_modes(), decode_mb_mode(), decode_mb_row_no_filter(), and vp78_decode_mv_mb_modes().

int16_t VP8Context::luma_qmul[2]

Definition at line 190 of file vp8.h.

Referenced by decode_mb_coeffs(), vp7_get_quants(), and vp8_get_quants().

int16_t VP8Context::luma_dc_qmul[2]

luma dc-only block quant

Definition at line 191 of file vp8.h.

Referenced by decode_mb_coeffs(), vp7_get_quants(), and vp8_get_quants().

int16_t VP8Context::chroma_qmul[2]

Definition at line 192 of file vp8.h.

Referenced by decode_mb_coeffs(), vp7_get_quants(), and vp8_get_quants().

struct { ... } VP8Context::qmat[4]

Macroblocks can have one of 4 different quants in a frame when segmentation is enabled.

If segmentation is disabled, only the first segment's values are used.

Referenced by decode_mb_coeffs(), vp7_get_quants(), and vp8_get_quants().

int8_t VP8Context::mode[VP8_MVMODE_SPLIT+1]

Definition at line 207 of file vp8.h.

Referenced by filter_level_for_mb(), and update_lf_deltas().

int8_t VP8Context::ref[4]

filter strength adjustment for macroblocks that reference: [0] - intra / VP56_FRAME_CURRENT [1] - VP56_FRAME_PREVIOUS [2] - VP56_FRAME_GOLDEN [3] - altref / VP56_FRAME_GOLDEN2

Definition at line 216 of file vp8.h.

Referenced by filter_level_for_mb(), and update_lf_deltas().

struct { ... } VP8Context::lf_delta

Referenced by filter_level_for_mb(), update_lf_deltas(), vp7_decode_frame_header(), and vp8_decode_frame_header().

uint8_t(* VP8Context::top_border)[16+8+8]

Definition at line 219 of file vp8.h.

Referenced by decode_mb_row_no_filter(), filter_mb_row(), free_buffers(), intra_predict(), and update_dimensions().

uint8_t(* VP8Context::top_nnz)[9]

Definition at line 220 of file vp8.h.

Referenced by decode_mb_row_no_filter(), free_buffers(), update_dimensions(), and vp78_decode_frame().

VP56RangeCoder VP8Context::c

header context, includes mb modes and motion vectors

Definition at line 222 of file vp8.h.

Referenced by decode_mb_mode(), parse_segment_info(), ref_to_update(), setup_partitions(), update_lf_deltas(), update_refs(), vp78_update_pred16x16_pred8x8_mvc_probabilities(), vp78_update_probability_tables(), vp7_decode_frame_header(), vp7_decode_mvs(), vp7_get_quants(), vp8_decode_frame_header(), vp8_decode_mvs(), and vp8_get_quants().

uint8_t VP8Context::segmentid[3]

Definition at line 231 of file vp8.h.

Referenced by decode_mb_mode(), and parse_segment_info().

uint8_t VP8Context::mbskip

Definition at line 232 of file vp8.h.

Referenced by decode_mb_mode(), and vp8_decode_frame_header().

uint8_t VP8Context::intra

Definition at line 233 of file vp8.h.

Referenced by decode_mb_mode(), vp7_decode_frame_header(), and vp8_decode_frame_header().

uint8_t VP8Context::last

Definition at line 234 of file vp8.h.

Referenced by decode_mb_mode(), vp7_decode_frame_header(), and vp8_decode_frame_header().

uint8_t VP8Context::golden

Definition at line 235 of file vp8.h.

Referenced by decode_mb_mode(), and vp8_decode_frame_header().

uint8_t VP8Context::pred16x16[4]

Definition at line 236 of file vp8.h.

Referenced by decode_mb_mode(), vp78_update_pred16x16_pred8x8_mvc_probabilities(), vp7_decode_frame_header(), and vp8_decode_frame_header().

uint8_t VP8Context::pred8x8c[3]

Definition at line 237 of file vp8.h.

Referenced by decode_mb_mode(), vp78_update_pred16x16_pred8x8_mvc_probabilities(), vp7_decode_frame_header(), and vp8_decode_frame_header().

uint8_t VP8Context::token[4][16][3][NUM_DCT_TOKENS-1]

Definition at line 238 of file vp8.h.

Referenced by decode_mb_coeffs(), vp78_reset_probability_tables(), and vp78_update_probability_tables().

uint8_t VP8Context::mvc[2][19]

Definition at line 239 of file vp8.h.

Referenced by decode_splitmvs(), vp78_update_pred16x16_pred8x8_mvc_probabilities(), vp7_decode_frame_header(), vp7_decode_mvs(), vp8_decode_frame_header(), and vp8_decode_mvs().

uint8_t VP8Context::scan[16]

Definition at line 240 of file vp8.h.

Referenced by decode_mb_coeffs(), vp78_decode_init(), and vp7_decode_frame_header().

struct { ... } VP8Context::prob[2]

These are all of the updatable probabilities for binary decisions.

They are only implicitly reset on keyframes, making it quite likely for an interframe to desync if a prior frame's header was corrupt or missing outright!

Referenced by decode_mb_coeffs(), decode_mb_mode(), decode_splitmvs(), parse_segment_info(), vp78_decode_frame(), vp78_decode_init(), vp78_reset_probability_tables(), vp78_update_pred16x16_pred8x8_mvc_probabilities(), vp78_update_probability_tables(), vp7_decode_frame_header(), vp7_decode_mvs(), vp8_decode_frame_header(), and vp8_decode_mvs().