39 int poc,
int poc1,
int i)
42 int td = av_clip_int8(poc1 - poc0);
46 int tb = av_clip_int8(poc - poc0);
47 int tx = (16384 + (
FFABS(td) >> 1)) /
td;
48 return av_clip_intp2((tb * tx + 32) >> 6, 10);
61 for (field = 0; field < 2; field++) {
64 for (i = 0; i < 2 * sl->
ref_count[0]; i++)
74 int map[2][16 + 32],
int list,
75 int field,
int colfield,
int mbafi)
78 int j, old_ref, rfield;
79 int start = mbafi ? 16 : 0;
84 memset(
map[list], 0,
sizeof(
map[list]));
86 for (rfield = 0; rfield < 2; rfield++) {
87 for (old_ref = 0; old_ref < ref1->
ref_count[colfield][list]; old_ref++) {
88 int poc = ref1->
ref_poc[colfield][list][old_ref];
93 else if (interl && (poc & 3) == 3)
94 poc = (poc & ~3) + rfield + 1;
96 for (j = start; j <
end; j++) {
99 int cur_ref = mbafi ? (j - 16) ^ field : j;
101 map[list][2 * old_ref + (rfield ^ field) + 16] = cur_ref;
102 if (rfield == field || !interl)
103 map[list][old_ref] = cur_ref;
117 int ref1sidx = (ref1->
reference & 1) ^ 1;
119 for (list = 0; list < sl->
list_count; list++) {
121 for (j = 0; j < sl->
ref_count[list]; j++)
141 if (col_poc[0] == INT_MAX && col_poc[1] == INT_MAX) {
146 FFABS(col_poc[1] - cur_poc));
158 for (list = 0; list < 2; list++) {
161 for (field = 0; field < 2; field++)
172 int ref_height = 16 * h->
mb_height >> ref_field_picture;
181 FFMIN(16 * mb_y >> ref_field_picture,
183 ref_field_picture && ref_field);
193 const int16_t (*l1mv0)[2], (*l1mv1)[2];
194 const int8_t *l1ref0, *l1ref1;
195 const int is_b8x8 =
IS_8X8(*mb_type);
207 #define MB_TYPE_16x16_OR_INTRA (MB_TYPE_16x16 | MB_TYPE_INTRA4x4 | \
208 MB_TYPE_INTRA16x16 | MB_TYPE_INTRA_PCM)
211 for (list = 0; list < 2; list++) {
220 ref[list] =
FFMIN3((
unsigned)left_ref,
223 if (ref[list] >= 0) {
229 int match_count = (left_ref == ref[list]) +
230 (top_ref == ref[list]) +
233 if (match_count > 1) {
237 assert(match_count == 1);
238 if (left_ref == ref[list])
240 else if (top_ref == ref[list])
255 if (ref[0] < 0 && ref[1] < 0) {
262 if (!(is_b8x8 | mv[0] | mv[1])) {
286 mb_y = sl->
mb_y & ~1;
314 }
else if (!is_b8x8 &&
339 l1mv0 += 2 * b4_stride;
340 l1mv1 += 2 * b4_stride;
346 for (i8 = 0; i8 < 4; i8++) {
349 int xy8 = x8 + y8 * b8_stride;
350 int xy4 = x8 * 3 + y8 * b4_stride;
362 ((l1ref0[xy8] == 0 &&
363 FFABS(l1mv0[xy4][0]) <= 1 &&
364 FFABS(l1mv0[xy4][1]) <= 1) ||
367 FFABS(l1mv1[xy4][0]) <= 1 &&
368 FFABS(l1mv1[xy4][1]) <= 1))) {
383 if (!is_b8x8 && !(n & 3))
394 FFABS(l1mv0[0][0]) <= 1 &&
395 FFABS(l1mv0[0][1]) <= 1) ||
396 (l1ref0[0] < 0 && !l1ref1[0] &&
397 FFABS(l1mv1[0][0]) <= 1 &&
398 FFABS(l1mv1[0][1]) <= 1 &&
413 for (i8 = 0; i8 < 4; i8++) {
414 const int x8 = i8 & 1;
415 const int y8 = i8 >> 1;
428 assert(b8_stride == 2);
435 const int16_t (*l1mv)[2] = l1ref0[i8] == 0 ? l1mv0 : l1mv1;
437 const int16_t *mv_col = l1mv[x8 * 3 + y8 * 3 * b4_stride];
438 if (
FFABS(mv_col[0]) <= 1 &&
FFABS(mv_col[1]) <= 1) {
449 for (i4 = 0; i4 < 4; i4++) {
450 const int16_t *mv_col = l1mv[x8 * 2 + (i4 & 1) +
451 (y8 * 2 + (i4 >> 1)) * b4_stride];
452 if (
FFABS(mv_col[0]) <= 1 &&
FFABS(mv_col[1]) <= 1) {
466 if (!is_b8x8 && !(n & 15))
480 const int16_t (*l1mv0)[2], (*l1mv1)[2];
481 const int8_t *l1ref0, *l1ref1;
482 const int is_b8x8 =
IS_8X8(*mb_type);
483 unsigned int sub_mb_type;
504 mb_y = sl->
mb_y & ~1;
537 }
else if (!is_b8x8 &&
563 l1mv0 += 2 * b4_stride;
564 l1mv1 += 2 * b4_stride;
585 for (i8 = 0; i8 < 4; i8++) {
586 const int x8 = i8 & 1;
587 const int y8 = i8 >> 1;
589 const int16_t (*l1mv)[2] = l1mv0;
603 ref0 = l1ref0[x8 + y8 * b8_stride];
605 ref0 = map_col_to_list0[0][ref0 + ref_offset];
607 ref0 = map_col_to_list0[1][l1ref1[x8 + y8 * b8_stride] +
611 scale = dist_scale_factor[ref0];
616 const int16_t *mv_col = l1mv[x8 * 3 + y8 * b4_stride];
617 int my_col = (mv_col[1] << y_shift) / 2;
618 int mx = (scale * mv_col[0] + 128) >> 8;
619 int my = (scale * my_col + 128) >> 8;
638 const int ref0 = l1ref0[0] >= 0 ? map_col_to_list0[0][l1ref0[0] + ref_offset]
639 : map_col_to_list0[1][l1ref1[0] + ref_offset];
640 const int scale = dist_scale_factor[ref0];
641 const int16_t *mv_col = l1ref0[0] >= 0 ? l1mv0[0] : l1mv1[0];
643 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
644 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
647 mv1 =
pack16to32(mv_l0[0] - mv_col[0], mv_l0[1] - mv_col[1]);
653 for (i8 = 0; i8 < 4; i8++) {
654 const int x8 = i8 & 1;
655 const int y8 = i8 >> 1;
657 const int16_t (*l1mv)[2] = l1mv0;
670 assert(b8_stride == 2);
673 ref0 = map_col_to_list0[0][ref0 + ref_offset];
675 ref0 = map_col_to_list0[1][l1ref1[i8] + ref_offset];
678 scale = dist_scale_factor[ref0];
683 const int16_t *mv_col = l1mv[x8 * 3 + y8 * 3 * b4_stride];
684 int mx = (scale * mv_col[0] + 128) >> 8;
685 int my = (scale * mv_col[1] + 128) >> 8;
689 pack16to32(mx - mv_col[0], my - mv_col[1]), 4);
691 for (i4 = 0; i4 < 4; i4++) {
692 const int16_t *mv_col = l1mv[x8 * 2 + (i4 & 1) +
693 (y8 * 2 + (i4 >> 1)) * b4_stride];
695 mv_l0[0] = (scale * mv_col[0] + 128) >> 8;
696 mv_l0[1] = (scale * mv_col[1] + 128) >> 8;
699 mv_l0[1] - mv_col[1]));
static void pred_spatial_direct_motion(const H264Context *const h, H264SliceContext *sl, int *mb_type)
int long_ref
1->long term reference 0->short term reference
int16_t mv_cache[2][5 *8][2]
Motion vector cache.
int dist_scale_factor[32]
int16_t(*[2] motion_val)[2]
void ff_h264_pred_direct_motion(const H264Context *const h, H264SliceContext *sl, int *mb_type)
void ff_thread_await_progress(ThreadFrame *f, int n, int field)
Wait for earlier decoding threads to finish reference pictures.
unsigned int ref_count[2]
num_ref_idx_l0/1_active_minus1 + 1
uint16_t sub_mb_type[4]
as a DCT coefficient is int32_t in high depth, we need to reserve twice the space.
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
int field_picture
whether or not picture was encoded in separate fields
static av_cold int end(AVCodecContext *avctx)
Multithreading support functions.
int map_col_to_list0_field[2][2][16+32]
#define PICT_BOTTOM_FIELD
void ff_h264_direct_ref_list_init(const H264Context *const h, H264SliceContext *sl)
static void await_reference_mb_row(const H264Context *const h, H264Ref *ref, int mb_y)
H.264 parameter set handling.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static const uint16_t mask[17]
int map_col_to_list0[2][16+32]
int active_thread_type
Which multithreading methods are in use by the codec.
int ref_poc[2][2][32]
POCs of the frames/fields used as reference (FIXME need per slice)
int direct_spatial_mv_pred
H264SEIUnregistered unregistered
int frame_num
frame_num (raw frame_num from slice header)
#define MB_TYPE_16x16_OR_INTRA
int slice_type_nos
S free slice type (SI/SP are remapped to I/P)
useful rectangle filling function
#define FF_THREAD_FRAME
Decode more than one frame at once.
static void pred_temp_direct_motion(const H264Context *const h, H264SliceContext *sl, int *mb_type)
#define MB_TYPE_INTERLACED
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
H.264 / AVC / MPEG-4 part10 codec.
int direct_8x8_inference_flag
static void fill_rectangle(int x, int y, int w, int h)
static int get_scale_factor(H264SliceContext *sl, int poc, int poc1, int i)
static const int8_t mv[256][2]
Libavcodec external API header.
int field_poc[2]
top/bottom POC
static const uint8_t scan8[16 *3+3]
static av_always_inline uint32_t pack16to32(unsigned a, unsigned b)
H264Picture * cur_pic_ptr
const VDPAUPixFmtMap * map
static void fill_colmap(const H264Context *h, H264SliceContext *sl, int map[2][16+32], int list, int field, int colfield, int mbafi)
int mbaff
1 -> MBAFF frame 0-> not MBAFF
common internal api header.
static int ref[MAX_W *MAX_W]
int8_t ref_cache[2][5 *8]
#define PART_NOT_AVAILABLE
H264Ref ref_list[2][48]
0..15: frame refs, 16..47: mbaff field refs.
int ref_count[2][2]
number of entries in ref_poc (FIXME need per slice)
int dist_scale_factor_field[2][32]
void ff_h264_direct_dist_scale_factor(const H264Context *const h, H264SliceContext *sl)