FFmpeg
4.4.5
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#include "libavutil/imgutils.h"
#include "libavutil/mem_internal.h"
#include "avcodec.h"
#include "hwconfig.h"
#include "internal.h"
#include "mathops.h"
#include "rectangle.h"
#include "thread.h"
#include "vp8.h"
#include "vp8data.h"
Go to the source code of this file.
Macros | |
#define | VPX(vp7, f) vp8_ ## f |
#define | VP7_MVC_SIZE 17 |
#define | VP8_MVC_SIZE 19 |
#define | MV_EDGE_CHECK(n) |
#define | XCHG(a, b, xchg) |
#define | H_LOOP_FILTER_16Y_INNER(cond) |
#define | MARGIN (16 << 2) |
#define | check_thread_pos(td, otd, mb_x_check, mb_y_check) while(0) |
#define | update_pos(td, mb_y, mb_x) while(0) |
Variables | |
static const uint8_t | subpel_idx [3][8] |
#define MV_EDGE_CHECK | ( | n | ) |
#define H_LOOP_FILTER_16Y_INNER | ( | cond | ) |
#define check_thread_pos | ( | td, | |
otd, | |||
mb_x_check, | |||
mb_y_check | |||
) | while(0) |
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Definition at line 51 of file vp8.c.
Referenced by update_dimensions(), and vp8_decode_flush_impl().
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Definition at line 71 of file vp8.c.
Referenced by vp78_decode_frame(), and vp7_fade_frame().
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Definition at line 96 of file vp8.c.
Referenced by get_pixel_format(), vp78_decode_frame(), and vp8_decode_flush_impl().
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Definition at line 129 of file vp8.c.
Referenced by ff_vp8_decode_free(), update_dimensions(), and vp8_decode_flush().
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Definition at line 147 of file vp8.c.
Referenced by vp78_decode_frame(), and vp7_fade_frame().
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Definition at line 147 of file vp8.c.
Referenced by update_dimensions(), and vp78_decode_frame().
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Definition at line 188 of file vp8.c.
Referenced by vp7_update_dimensions(), and vp8_update_dimensions().
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Definition at line 260 of file vp8.c.
Referenced by vp7_decode_frame_header().
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Definition at line 265 of file vp8.c.
Referenced by vp8_decode_frame_header().
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Definition at line 271 of file vp8.c.
Referenced by vp8_decode_frame_header().
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Definition at line 293 of file vp8.c.
Referenced by vp8_decode_frame_header().
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Definition at line 317 of file vp8.c.
Referenced by vp8_decode_frame_header().
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Definition at line 349 of file vp8.c.
Referenced by vp7_decode_frame_header().
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Definition at line 368 of file vp8.c.
Referenced by vp8_decode_frame_header().
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Determine which buffers golden and altref should be updated with after this frame.
The spec isn't clear here, so I'm going by my understanding of what libvpx does
Intra frames update all 3 references Inter frames update VP56_FRAME_PREVIOUS if the update_last flag is set If the update (golden|altref) flag is set, it's updated with the current frame if update_last is set, and VP56_FRAME_PREVIOUS otherwise. If the flag is not set, the number read means: 0: no update 1: VP56_FRAME_PREVIOUS 2: update golden with altref, or update altref with golden
Definition at line 414 of file vp8.c.
Referenced by update_refs().
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Definition at line 430 of file vp8.c.
Referenced by vp7_decode_frame_header(), and vp8_decode_frame_header().
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Definition at line 439 of file vp8.c.
Referenced by vp7_decode_frame_header(), and vp8_decode_frame_header().
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Definition at line 458 of file vp8.c.
Referenced by vp7_decode_frame_header(), and vp8_decode_frame_header().
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Definition at line 478 of file vp8.c.
Referenced by uncompressed_header(), and vp8_decode_frame_header().
Definition at line 489 of file vp8.c.
Referenced by vp7_fade_frame().
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Definition at line 500 of file vp8.c.
Referenced by parse_time_sequence(), and vp7_fade_frame().
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Definition at line 516 of file vp8.c.
Referenced by vp7_decode_frame_header().
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Definition at line 553 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 717 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 858 of file vp8.c.
Referenced by vp8_decode_mvs().
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Motion vector coding, 17.1.
Definition at line 869 of file vp8.c.
Referenced by decode_splitmvs(), vp7_read_mv_component(), and vp8_read_mv_component().
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Definition at line 897 of file vp8.c.
Referenced by vp7_decode_mvs().
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Definition at line 902 of file vp8.c.
Referenced by vp8_decode_mvs().
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Definition at line 908 of file vp8.c.
Referenced by decode_splitmvs().
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Split motion vector prediction, 16.4.
Definition at line 925 of file vp8.c.
Referenced by vp7_decode_mvs(), and vp8_decode_mvs().
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The vp7 reference decoder uses a padding macroblock column (added to right edge of the frame) to guard against illegal macroblock offsets.
The algorithm has bugs that permit offsets to straddle the padding column. This function replicates those bugs.
[out] | edge_x | macroblock x address |
[out] | edge_y | macroblock y address |
Definition at line 1007 of file vp8.c.
Referenced by vp7_decode_mvs().
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Definition at line 1020 of file vp8.c.
Referenced by vp7_decode_mvs().
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Definition at line 1026 of file vp8.c.
Referenced by decode_mb_mode().
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Definition at line 1117 of file vp8.c.
Referenced by decode_mb_mode().
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Definition at line 1217 of file vp8.c.
Referenced by decode_mb_mode().
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Definition at line 1252 of file vp8.c.
Referenced by decode_mb_row_no_filter(), and vp78_decode_mv_mb_modes().
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r | arithmetic bitstream reader context |
block | destination for block coefficients |
probs | probabilities to use when reading trees from the bitstream |
i | initial coeff index, 0 unless a separate DC block is coded |
qmul | array holding the dc/ac dequant factor at position 0/1 |
Definition at line 1344 of file vp8.c.
Referenced by vp7_decode_block_coeffs_internal(), and vp8_decode_block_coeffs_internal().
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Definition at line 1404 of file vp8.c.
Referenced by decode_mb_coeffs().
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Definition at line 1426 of file vp8.c.
Referenced by decode_block_coeffs().
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Definition at line 1438 of file vp8.c.
Referenced by decode_block_coeffs().
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c | arithmetic bitstream reader context |
block | destination for block coefficients |
probs | probabilities to use when reading trees from the bitstream |
i | initial coeff index, 0 unless a separate DC block is coded |
zero_nhood | the initial prediction context for number of surrounding all-zero blocks (only left/top, so 0-2) |
qmul | array holding the dc/ac dequant factor at position 0/1 |
scan | scan pattern (VP7 only) |
Definition at line 1463 of file vp8.c.
Referenced by decode_mb_coeffs().
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Definition at line 1478 of file vp8.c.
Referenced by decode_mb_row_no_filter().
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Definition at line 1553 of file vp8.c.
Referenced by decode_mb_row_no_filter(), and filter_mb_row().
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Definition at line 1565 of file vp8.c.
Referenced by intra_predict().
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Definition at line 1599 of file vp8.c.
Referenced by check_intra_pred8x8_mode_emuedge().
Definition at line 1608 of file vp8.c.
Referenced by check_intra_pred8x8_mode_emuedge().
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Definition at line 1617 of file vp8.c.
Referenced by intra_predict().
Definition at line 1633 of file vp8.c.
Referenced by check_intra_pred4x4_mode_emuedge().
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Definition at line 1643 of file vp8.c.
Referenced by intra_predict().
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Definition at line 1679 of file vp8.c.
Referenced by decode_mb_row_no_filter().
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luma MC function
s | VP8 decoding context |
dst | target buffer for block data at block position |
ref | reference picture buffer at origin (0, 0) |
mv | motion vector (relative to block position) to get pixel data from |
x_off | horizontal position of block from origin (0, 0) |
y_off | vertical position of block from origin (0, 0) |
block_w | width of block (16, 8 or 4) |
block_h | height of block (always same as block_w) |
width | width of src/dst plane data |
height | height of src/dst plane data |
linesize | size of a single line of plane data, including padding |
mc_func | motion compensation function pointers (bilinear or sixtap MC) |
Definition at line 1817 of file vp8.c.
Referenced by inter_predict(), and vp8_mc_part().
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chroma MC function
s | VP8 decoding context |
dst1 | target buffer for block data at block position (U plane) |
dst2 | target buffer for block data at block position (V plane) |
ref | reference picture buffer at origin (0, 0) |
mv | motion vector (relative to block position) to get pixel data from |
x_off | horizontal position of block from origin (0, 0) |
y_off | vertical position of block from origin (0, 0) |
block_w | width of block (16, 8 or 4) |
block_h | height of block (always same as block_w) |
width | width of src/dst plane data |
height | height of src/dst plane data |
linesize | size of a single line of plane data, including padding |
mc_func | motion compensation function pointers (bilinear or sixtap MC) |
Definition at line 1875 of file vp8.c.
Referenced by inter_predict(), and vp8_mc_part().
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Definition at line 1925 of file vp8.c.
Referenced by inter_predict().
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Definition at line 1963 of file vp8.c.
Referenced by decode_mb_row_no_filter().
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Apply motion vectors to prediction buffer, chapter 18.
Definition at line 1986 of file vp8.c.
Referenced by decode_mb_row_no_filter().
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Definition at line 2070 of file vp8.c.
Referenced by decode_mb_row_no_filter().
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Definition at line 2132 of file vp8.c.
Referenced by decode_mb_row_no_filter().
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Definition at line 2165 of file vp8.c.
Referenced by filter_mb_row().
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Definition at line 2252 of file vp8.c.
Referenced by filter_mb_row().
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Definition at line 2286 of file vp8.c.
Referenced by vp7_decode_mv_mb_modes(), and vp8_decode_mv_mb_modes().
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Definition at line 2323 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 2329 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 2373 of file vp8.c.
Referenced by vp7_decode_mb_row_no_filter(), and vp8_decode_mb_row_no_filter().
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Definition at line 2501 of file vp8.c.
Referenced by vp78_decode_init().
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Definition at line 2507 of file vp8.c.
Referenced by vp78_decode_init().
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Definition at line 2513 of file vp8.c.
Referenced by vp7_filter_mb_row(), and vp8_filter_mb_row().
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Definition at line 2572 of file vp8.c.
Referenced by vp78_decode_init().
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Definition at line 2578 of file vp8.c.
Referenced by vp78_decode_init().
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Definition at line 2585 of file vp8.c.
Referenced by vp7_decode_mb_row_sliced(), and vp8_decode_mb_row_sliced().
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Definition at line 2619 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 2625 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 2632 of file vp8.c.
Referenced by ff_vp8_decode_frame().
int ff_vp8_decode_frame | ( | AVCodecContext * | avctx, |
void * | data, | ||
int * | got_frame, | ||
AVPacket * | avpkt | ||
) |
Definition at line 2818 of file vp8.c.
Referenced by vp8_lossy_decode_frame().
av_cold int ff_vp8_decode_free | ( | AVCodecContext * | avctx | ) |
Definition at line 2832 of file vp8.c.
Referenced by vp78_decode_init(), and webp_decode_close().
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Definition at line 2847 of file vp8.c.
Referenced by vp78_decode_init().
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Definition at line 2859 of file vp8.c.
Referenced by ff_vp8_decode_init().
av_cold int ff_vp8_decode_init | ( | AVCodecContext * | avctx | ) |
Definition at line 2902 of file vp8.c.
Referenced by vp8_lossy_decode_frame().
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Definition at line 1793 of file vp8.c.
Referenced by vp8_mc_chroma(), and vp8_mc_luma().