Libav
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#include "libavutil/imgutils.h"
#include "avcodec.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 | 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) |
#define | update_pos(td, mb_y, mb_x) |
Functions | |
static void | free_buffers (VP8Context *s) |
static int | vp8_alloc_frame (VP8Context *s, VP8Frame *f, int ref) |
static void | vp8_release_frame (VP8Context *s, VP8Frame *f) |
static void | vp8_decode_flush_impl (AVCodecContext *avctx, int free_mem) |
static void | vp8_decode_flush (AVCodecContext *avctx) |
static VP8Frame * | vp8_find_free_buffer (VP8Context *s) |
static av_always_inline int | update_dimensions (VP8Context *s, int width, int height, int is_vp7) |
static int | vp7_update_dimensions (VP8Context *s, int width, int height) |
static int | vp8_update_dimensions (VP8Context *s, int width, int height) |
static void | parse_segment_info (VP8Context *s) |
static void | update_lf_deltas (VP8Context *s) |
static int | setup_partitions (VP8Context *s, const uint8_t *buf, int buf_size) |
static void | vp7_get_quants (VP8Context *s) |
static void | get_quants (VP8Context *s) |
static VP56Frame | ref_to_update (VP8Context *s, int update, VP56Frame ref) |
Determine which buffers golden and altref should be updated with after this frame. More... | |
static void | vp78_reset_probability_tables (VP8Context *s) |
static void | vp78_update_probability_tables (VP8Context *s) |
static void | vp78_update_pred16x16_pred8x8_mvc_probabilities (VP8Context *s, int mvc_size) |
static void | update_refs (VP8Context *s) |
static void | copy_luma (AVFrame *dst, AVFrame *src, int width, int height) |
static void | fade (uint8_t *dst, uint8_t *src, int width, int height, ptrdiff_t linesize, int alpha, int beta) |
static int | vp7_fade_frame (VP8Context *s, VP56RangeCoder *c) |
static int | vp7_decode_frame_header (VP8Context *s, const uint8_t *buf, int buf_size) |
static int | vp8_decode_frame_header (VP8Context *s, const uint8_t *buf, int buf_size) |
static av_always_inline void | clamp_mv (VP8Context *s, VP56mv *dst, const VP56mv *src) |
static int | read_mv_component (VP56RangeCoder *c, const uint8_t *p, int vp7) |
Motion vector coding, 17.1. More... | |
static av_always_inline const uint8_t * | get_submv_prob (uint32_t left, uint32_t top, int is_vp7) |
static av_always_inline int | decode_splitmvs (VP8Context *s, VP56RangeCoder *c, VP8Macroblock *mb, int layout, int is_vp7) |
Split motion vector prediction, 16.4. More... | |
static int | vp7_calculate_mb_offset (int mb_x, int mb_y, int mb_width, int xoffset, int yoffset, int boundary, int *edge_x, int *edge_y) |
The vp7 reference decoder uses a padding macroblock column (added to right edge of the frame) to guard against illegal macroblock offsets. More... | |
static const VP56mv * | get_bmv_ptr (const VP8Macroblock *mb, int subblock) |
static av_always_inline void | vp7_decode_mvs (VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, int layout) |
static av_always_inline void | vp8_decode_mvs (VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, int layout) |
static av_always_inline void | decode_intra4x4_modes (VP8Context *s, VP56RangeCoder *c, VP8Macroblock *mb, int mb_x, int keyframe, int layout) |
static av_always_inline void | decode_mb_mode (VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, uint8_t *segment, uint8_t *ref, int layout, int is_vp7) |
static av_always_inline int | decode_block_coeffs_internal (VP56RangeCoder *r, int16_t block[16], uint8_t probs[16][3][NUM_DCT_TOKENS - 1], int i, uint8_t *token_prob, int16_t qmul[2], const uint8_t scan[16], int vp7) |
static av_always_inline int | inter_predict_dc (int16_t block[16], int16_t pred[2]) |
static int | vp7_decode_block_coeffs_internal (VP56RangeCoder *r, int16_t block[16], uint8_t probs[16][3][NUM_DCT_TOKENS - 1], int i, uint8_t *token_prob, int16_t qmul[2], const uint8_t scan[16]) |
static int | vp8_decode_block_coeffs_internal (VP56RangeCoder *r, int16_t block[16], uint8_t probs[16][3][NUM_DCT_TOKENS - 1], int i, uint8_t *token_prob, int16_t qmul[2]) |
static av_always_inline int | decode_block_coeffs (VP56RangeCoder *c, int16_t block[16], uint8_t probs[16][3][NUM_DCT_TOKENS - 1], int i, int zero_nhood, int16_t qmul[2], const uint8_t scan[16], int vp7) |
static av_always_inline void | decode_mb_coeffs (VP8Context *s, VP8ThreadData *td, VP56RangeCoder *c, VP8Macroblock *mb, uint8_t t_nnz[9], uint8_t l_nnz[9], int is_vp7) |
static av_always_inline void | backup_mb_border (uint8_t *top_border, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, ptrdiff_t linesize, ptrdiff_t uvlinesize, int simple) |
static av_always_inline void | xchg_mb_border (uint8_t *top_border, uint8_t *src_y, uint8_t *src_cb, uint8_t *src_cr, ptrdiff_t linesize, ptrdiff_t uvlinesize, int mb_x, int mb_y, int mb_width, int simple, int xchg) |
static av_always_inline int | check_dc_pred8x8_mode (int mode, int mb_x, int mb_y) |
static av_always_inline int | check_tm_pred8x8_mode (int mode, int mb_x, int mb_y, int vp7) |
static av_always_inline int | check_intra_pred8x8_mode_emuedge (int mode, int mb_x, int mb_y, int vp7) |
static av_always_inline int | check_tm_pred4x4_mode (int mode, int mb_x, int mb_y, int vp7) |
static av_always_inline int | check_intra_pred4x4_mode_emuedge (int mode, int mb_x, int mb_y, int *copy_buf, int vp7) |
static av_always_inline void | intra_predict (VP8Context *s, VP8ThreadData *td, uint8_t *dst[3], VP8Macroblock *mb, int mb_x, int mb_y, int is_vp7) |
static av_always_inline void | vp8_mc_luma (VP8Context *s, VP8ThreadData *td, uint8_t *dst, ThreadFrame *ref, const VP56mv *mv, int x_off, int y_off, int block_w, int block_h, int width, int height, ptrdiff_t linesize, vp8_mc_func mc_func[3][3]) |
luma MC function More... | |
static av_always_inline void | vp8_mc_chroma (VP8Context *s, VP8ThreadData *td, uint8_t *dst1, uint8_t *dst2, ThreadFrame *ref, const VP56mv *mv, int x_off, int y_off, int block_w, int block_h, int width, int height, ptrdiff_t linesize, vp8_mc_func mc_func[3][3]) |
chroma MC function More... | |
static av_always_inline void | vp8_mc_part (VP8Context *s, VP8ThreadData *td, uint8_t *dst[3], ThreadFrame *ref_frame, int x_off, int y_off, int bx_off, int by_off, int block_w, int block_h, int width, int height, VP56mv *mv) |
static av_always_inline void | prefetch_motion (VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, int mb_xy, int ref) |
static av_always_inline void | inter_predict (VP8Context *s, VP8ThreadData *td, uint8_t *dst[3], VP8Macroblock *mb, int mb_x, int mb_y) |
Apply motion vectors to prediction buffer, chapter 18. More... | |
static av_always_inline void | idct_mb (VP8Context *s, VP8ThreadData *td, uint8_t *dst[3], VP8Macroblock *mb) |
static av_always_inline void | filter_level_for_mb (VP8Context *s, VP8Macroblock *mb, VP8FilterStrength *f, int is_vp7) |
static av_always_inline void | filter_mb (VP8Context *s, uint8_t *dst[3], VP8FilterStrength *f, int mb_x, int mb_y, int is_vp7) |
static av_always_inline void | filter_mb_simple (VP8Context *s, uint8_t *dst, VP8FilterStrength *f, int mb_x, int mb_y) |
static av_always_inline void | vp78_decode_mv_mb_modes (AVCodecContext *avctx, VP8Frame *curframe, VP8Frame *prev_frame, int is_vp7) |
static void | vp7_decode_mv_mb_modes (AVCodecContext *avctx, VP8Frame *cur_frame, VP8Frame *prev_frame) |
static void | vp8_decode_mv_mb_modes (AVCodecContext *avctx, VP8Frame *cur_frame, VP8Frame *prev_frame) |
static void | vp8_decode_mb_row_no_filter (AVCodecContext *avctx, void *tdata, int jobnr, int threadnr, int is_vp7) |
static void | vp8_filter_mb_row (AVCodecContext *avctx, void *tdata, int jobnr, int threadnr, int is_vp7) |
static av_always_inline int | vp78_decode_mb_row_sliced (AVCodecContext *avctx, void *tdata, int jobnr, int threadnr, int is_vp7) |
static int | vp7_decode_mb_row_sliced (AVCodecContext *avctx, void *tdata, int jobnr, int threadnr) |
static int | vp8_decode_mb_row_sliced (AVCodecContext *avctx, void *tdata, int jobnr, int threadnr) |
static av_always_inline int | vp78_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt, int is_vp7) |
int | ff_vp8_decode_frame (AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt) |
av_cold int | ff_vp8_decode_free (AVCodecContext *avctx) |
static av_cold int | vp8_init_frames (VP8Context *s) |
static av_always_inline int | vp78_decode_init (AVCodecContext *avctx, int is_vp7) |
av_cold int | ff_vp8_decode_init (AVCodecContext *avctx) |
Variables | |
static const uint8_t | subpel_idx [3][8] |
#define VP7_MVC_SIZE 17 |
Definition at line 383 of file vp8.c.
Referenced by vp7_decode_frame_header().
#define VP8_MVC_SIZE 19 |
Definition at line 384 of file vp8.c.
Referenced by vp8_decode_frame_header().
#define MV_EDGE_CHECK | ( | n | ) |
Referenced by vp8_decode_mvs().
Referenced by xchg_mb_border().
#define H_LOOP_FILTER_16Y_INNER | ( | cond | ) |
Referenced by filter_mb().
#define MARGIN (16 << 2) |
Definition at line 2157 of file vp8.c.
Referenced by vp78_decode_frame(), vp78_decode_mv_mb_modes(), and vp8_decode_mb_row_no_filter().
#define check_thread_pos | ( | td, | |
otd, | |||
mb_x_check, | |||
mb_y_check | |||
) |
Definition at line 2239 of file vp8.c.
Referenced by vp8_decode_mb_row_no_filter(), and vp8_filter_mb_row().
#define update_pos | ( | td, | |
mb_y, | |||
mb_x | |||
) |
Definition at line 2240 of file vp8.c.
Referenced by vp78_decode_mb_row_sliced(), vp8_decode_mb_row_no_filter(), and vp8_filter_mb_row().
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Definition at line 41 of file vp8.c.
Referenced by ff_vp8_decode_init(), update_dimensions(), and vp8_decode_flush_impl().
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Definition at line 61 of file vp8.c.
Referenced by vp78_decode_frame(), and vp7_fade_frame().
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Definition at line 74 of file vp8.c.
Referenced by vp78_decode_frame(), vp8_decode_flush_impl(), and vp8_find_free_buffer().
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Definition at line 99 of file vp8.c.
Referenced by ff_vp8_decode_free(), update_dimensions(), and vp8_decode_flush().
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Definition at line 112 of file vp8.c.
Referenced by ff_vp8_decode_init().
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Definition at line 117 of file vp8.c.
Referenced by vp78_decode_frame(), and vp7_fade_frame().
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Definition at line 142 of file vp8.c.
Referenced by vp7_update_dimensions(), and vp8_update_dimensions().
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Definition at line 196 of file vp8.c.
Referenced by vp7_decode_frame_header().
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Definition at line 201 of file vp8.c.
Referenced by vp8_decode_frame_header().
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Definition at line 206 of file vp8.c.
Referenced by vp8_decode_frame_header().
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Definition at line 227 of file vp8.c.
Referenced by vp8_decode_frame_header().
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Definition at line 251 of file vp8.c.
Referenced by vp8_decode_frame_header().
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Definition at line 277 of file vp8.c.
Referenced by vp7_decode_frame_header().
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Definition at line 296 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 342 of file vp8.c.
Referenced by update_refs().
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Definition at line 358 of file vp8.c.
Referenced by vp7_decode_frame_header(), and vp8_decode_frame_header().
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Definition at line 367 of file vp8.c.
Referenced by vp7_decode_frame_header(), and vp8_decode_frame_header().
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Definition at line 386 of file vp8.c.
Referenced by vp7_decode_frame_header(), and vp8_decode_frame_header().
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Definition at line 406 of file vp8.c.
Referenced by vp8_decode_frame_header().
Definition at line 417 of file vp8.c.
Referenced by vp7_fade_frame().
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Definition at line 428 of file vp8.c.
Referenced by avfilter_register_all(), and vp7_fade_frame().
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Definition at line 442 of file vp8.c.
Referenced by vp7_decode_frame_header().
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Definition at line 477 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 626 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 748 of file vp8.c.
Referenced by vp8_decode_mvs().
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Motion vector coding, 17.1.
Definition at line 757 of file vp8.c.
Referenced by decode_splitmvs(), vp7_decode_mvs(), and vp8_decode_mvs().
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Definition at line 786 of file vp8.c.
Referenced by decode_splitmvs().
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Split motion vector prediction, 16.4.
Definition at line 803 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 885 of file vp8.c.
Referenced by vp7_decode_mvs().
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Definition at line 898 of file vp8.c.
Referenced by vp7_decode_mvs().
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Definition at line 904 of file vp8.c.
Referenced by decode_mb_mode().
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Definition at line 995 of file vp8.c.
Referenced by decode_mb_mode().
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Definition at line 1095 of file vp8.c.
Referenced by decode_mb_mode().
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Definition at line 1130 of file vp8.c.
Referenced by vp78_decode_mv_mb_modes(), and vp8_decode_mb_row_no_filter().
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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 1220 of file vp8.c.
Referenced by vp7_decode_block_coeffs_internal(), and vp8_decode_block_coeffs_internal().
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Definition at line 1280 of file vp8.c.
Referenced by decode_mb_coeffs().
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Definition at line 1302 of file vp8.c.
Referenced by decode_block_coeffs().
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Definition at line 1314 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 |
Definition at line 1338 of file vp8.c.
Referenced by decode_mb_coeffs().
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Definition at line 1353 of file vp8.c.
Referenced by vp8_decode_mb_row_no_filter().
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Definition at line 1428 of file vp8.c.
Referenced by vp8_decode_mb_row_no_filter(), and vp8_filter_mb_row().
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Definition at line 1440 of file vp8.c.
Referenced by intra_predict().
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Definition at line 1474 of file vp8.c.
Referenced by check_intra_pred8x8_mode_emuedge().
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Definition at line 1483 of file vp8.c.
Referenced by check_intra_pred8x8_mode_emuedge().
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Definition at line 1492 of file vp8.c.
Referenced by intra_predict().
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Definition at line 1508 of file vp8.c.
Referenced by check_intra_pred4x4_mode_emuedge().
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Definition at line 1518 of file vp8.c.
Referenced by intra_predict().
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Definition at line 1554 of file vp8.c.
Referenced by vp8_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 1692 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 1750 of file vp8.c.
Referenced by inter_predict(), and vp8_mc_part().
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Definition at line 1798 of file vp8.c.
Referenced by inter_predict().
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Definition at line 1836 of file vp8.c.
Referenced by vp8_decode_mb_row_no_filter().
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Apply motion vectors to prediction buffer, chapter 18.
Definition at line 1859 of file vp8.c.
Referenced by vp8_decode_mb_row_no_filter().
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Definition at line 1943 of file vp8.c.
Referenced by vp8_decode_mb_row_no_filter().
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Definition at line 2005 of file vp8.c.
Referenced by vp8_decode_mb_row_no_filter().
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Definition at line 2038 of file vp8.c.
Referenced by vp8_filter_mb_row().
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Definition at line 2125 of file vp8.c.
Referenced by vp8_filter_mb_row().
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Definition at line 2159 of file vp8.c.
Referenced by vp7_decode_mv_mb_modes(), and vp8_decode_mv_mb_modes().
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Definition at line 2191 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 2197 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 2243 of file vp8.c.
Referenced by vp78_decode_mb_row_sliced().
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Definition at line 2364 of file vp8.c.
Referenced by vp78_decode_mb_row_sliced().
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Definition at line 2424 of file vp8.c.
Referenced by vp7_decode_mb_row_sliced(), and vp8_decode_mb_row_sliced().
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Definition at line 2453 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 2459 of file vp8.c.
Referenced by vp78_decode_frame().
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Definition at line 2467 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 2625 of file vp8.c.
Referenced by ff_vp8_decode_init(), and vp8_lossy_decode_frame().
av_cold int ff_vp8_decode_free | ( | AVCodecContext * | avctx | ) |
Definition at line 2639 of file vp8.c.
Referenced by ff_vp8_decode_init(), vp78_decode_init(), and webp_decode_close().
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Definition at line 2651 of file vp8.c.
Referenced by ff_vp8_decode_init(), and vp78_decode_init().
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Definition at line 2663 of file vp8.c.
Referenced by ff_vp8_decode_init().
av_cold int ff_vp8_decode_init | ( | AVCodecContext * | avctx | ) |
Definition at line 2701 of file vp8.c.
Referenced by ff_vp8_decode_init(), and vp8_lossy_decode_frame().
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Definition at line 1668 of file vp8.c.
Referenced by vp8_mc_chroma(), and vp8_mc_luma().