Go to the documentation of this file.
27 #include "config_components.h"
101 s->macroblocks =
NULL;
138 memset(
s->framep, 0,
sizeof(
s->framep));
158 for (
i = 0;
i < 5;
i++)
179 #if CONFIG_VP8_VAAPI_HWACCEL
182 #if CONFIG_VP8_NVDEC_HWACCEL
196 int i,
ret, dim_reset = 0;
198 if (
width !=
s->avctx->width || ((
width+15)/16 !=
s->mb_width || (
height+15)/16 !=
s->mb_height) &&
s->macroblocks_base ||
206 dim_reset = (
s->macroblocks_base !=
NULL);
210 !
s->actually_webp && !is_vp7) {
217 s->mb_width = (
s->avctx->coded_width + 15) / 16;
218 s->mb_height = (
s->avctx->coded_height + 15) / 16;
223 s->macroblocks_base =
av_mallocz((
s->mb_width +
s->mb_height * 2 + 1) *
224 sizeof(*
s->macroblocks));
225 s->intra4x4_pred_mode_top =
av_mallocz(
s->mb_width * 4);
227 s->macroblocks_base =
av_mallocz((
s->mb_width + 2) * (
s->mb_height + 2) *
228 sizeof(*
s->macroblocks));
230 s->top_border =
av_mallocz((
s->mb_width + 1) *
sizeof(*
s->top_border));
233 if (!
s->macroblocks_base || !
s->top_nnz || !
s->top_border ||
234 !
s->thread_data || (!
s->intra4x4_pred_mode_top && !
s->mb_layout)) {
240 s->thread_data[
i].filter_strength =
241 av_mallocz(
s->mb_width *
sizeof(*
s->thread_data[0].filter_strength));
242 if (!
s->thread_data[
i].filter_strength) {
252 s->macroblocks =
s->macroblocks_base + 1;
276 if (
s->segmentation.update_feature_data) {
279 for (
i = 0;
i < 4;
i++)
282 for (
i = 0;
i < 4;
i++)
285 if (
s->segmentation.update_map)
286 for (
i = 0;
i < 3;
i++)
295 for (
i = 0;
i < 4;
i++) {
300 s->lf_delta.ref[
i] = -
s->lf_delta.ref[
i];
309 s->lf_delta.mode[
i] = -
s->lf_delta.mode[
i];
316 const uint8_t *
sizes = buf;
322 buf += 3 * (
s->num_coeff_partitions - 1);
323 buf_size -= 3 * (
s->num_coeff_partitions - 1);
327 for (
i = 0;
i <
s->num_coeff_partitions - 1;
i++) {
329 if (buf_size -
size < 0)
331 s->coeff_partition_size[
i] =
size;
340 s->coeff_partition_size[
i] = buf_size;
377 for (
i = 0;
i < 4;
i++) {
378 if (
s->segmentation.enabled) {
379 base_qi =
s->segmentation.base_quant[
i];
380 if (!
s->segmentation.absolute_vals)
381 base_qi +=
s->quant.yac_qi;
383 base_qi =
s->quant.yac_qi;
393 s->qmat[
i].luma_dc_qmul[1] =
FFMAX(
s->qmat[
i].luma_dc_qmul[1], 8);
394 s->qmat[
i].chroma_qmul[0] =
FFMIN(
s->qmat[
i].chroma_qmul[0], 132);
430 for (
i = 0;
i < 4;
i++)
431 for (j = 0; j < 16; j++)
433 sizeof(
s->prob->token[
i][j]));
441 for (
i = 0;
i < 4;
i++)
442 for (j = 0; j < 8; j++)
443 for (k = 0; k < 3; k++)
452 #define VP7_MVC_SIZE 17
453 #define VP8_MVC_SIZE 19
462 for (
i = 0;
i < 4;
i++)
465 for (
i = 0;
i < 3;
i++)
469 for (
i = 0;
i < 2;
i++)
470 for (j = 0; j < mvc_size; j++)
490 for (j = 1; j < 3; j++) {
497 static void fade(uint8_t *dst, ptrdiff_t dst_linesize,
498 const uint8_t *
src, ptrdiff_t src_linesize,
503 for (j = 0; j <
height; j++) {
504 const uint8_t *
src2 =
src + j * src_linesize;
505 uint8_t *dst2 = dst + j * dst_linesize;
517 if (!
s->keyframe && (
alpha || beta)) {
518 int width =
s->mb_width * 16;
519 int height =
s->mb_height * 16;
544 src->data[0],
src->linesize[0],
554 int part1_size, hscale, vscale,
i, j,
ret;
555 int width =
s->avctx->width;
559 int fade_present = 1;
565 s->profile = (buf[0] >> 1) & 7;
566 if (
s->profile > 1) {
571 s->keyframe = !(buf[0] & 1);
573 part1_size =
AV_RL24(buf) >> 4;
575 if (buf_size < 4 - s->
profile + part1_size) {
576 av_log(
s->avctx,
AV_LOG_ERROR,
"Buffer size %d is too small, needed : %d\n", buf_size, 4 -
s->profile + part1_size);
580 buf += 4 -
s->profile;
581 buf_size -= 4 -
s->profile;
583 memcpy(
s->put_pixels_tab,
s->vp8dsp.put_vp8_epel_pixels_tab,
sizeof(
s->put_pixels_tab));
589 buf_size -= part1_size;
597 if (hscale || vscale)
603 sizeof(
s->prob->pred16x16));
605 sizeof(
s->prob->pred8x8c));
606 for (
i = 0;
i < 2;
i++)
609 memset(&
s->segmentation, 0,
sizeof(
s->segmentation));
610 memset(&
s->lf_delta, 0,
sizeof(
s->lf_delta));
614 if (
s->keyframe ||
s->profile > 0)
615 memset(
s->inter_dc_pred, 0 ,
sizeof(
s->inter_dc_pred));
618 for (
i = 0;
i < 4;
i++) {
620 if (
s->feature_enabled[
i]) {
623 for (j = 0; j < 3; j++)
624 s->feature_index_prob[
i][j] =
628 for (j = 0; j < 4; j++)
629 s->feature_value[
i][j] =
634 s->segmentation.enabled = 0;
635 s->segmentation.update_map = 0;
636 s->lf_delta.enabled = 0;
638 s->num_coeff_partitions = 1;
643 if (!
s->macroblocks_base ||
645 (
width + 15) / 16 !=
s->mb_width || (
height + 15) / 16 !=
s->mb_height) {
660 s->update_probabilities = 1;
662 if (
s->profile > 0) {
664 if (!
s->update_probabilities)
665 s->prob[1] =
s->prob[0];
685 for (
i = 1;
i < 16;
i++)
697 s->mbskip_enabled = 0;
718 int header_size, hscale, vscale,
ret;
719 int width =
s->avctx->width;
727 s->keyframe = !(buf[0] & 1);
728 s->profile = (buf[0]>>1) & 7;
729 s->invisible = !(buf[0] & 0x10);
730 header_size =
AV_RL24(buf) >> 5;
734 s->header_partition_size = header_size;
740 memcpy(
s->put_pixels_tab,
s->vp8dsp.put_vp8_epel_pixels_tab,
741 sizeof(
s->put_pixels_tab));
743 memcpy(
s->put_pixels_tab,
s->vp8dsp.put_vp8_bilinear_pixels_tab,
744 sizeof(
s->put_pixels_tab));
746 if (header_size > buf_size - 7 *
s->keyframe) {
752 if (
AV_RL24(buf) != 0x2a019d) {
754 "Invalid start code 0x%x\n",
AV_RL24(buf));
759 hscale = buf[4] >> 6;
760 vscale = buf[6] >> 6;
764 if (hscale || vscale)
770 sizeof(
s->prob->pred16x16));
772 sizeof(
s->prob->pred8x8c));
774 sizeof(
s->prob->mvc));
775 memset(&
s->segmentation, 0,
sizeof(
s->segmentation));
776 memset(&
s->lf_delta, 0,
sizeof(
s->lf_delta));
783 buf_size -= header_size;
795 s->segmentation.update_map = 0;
803 if (
s->lf_delta.update)
812 if (!
s->macroblocks_base ||
814 (
width+15)/16 !=
s->mb_width || (
height+15)/16 !=
s->mb_height)
829 s->prob[1] =
s->prob[0];
847 s->coder_state_at_header_end.input =
s->c.buffer - (-
s->c.bits / 8);
848 s->coder_state_at_header_end.range =
s->c.high;
849 s->coder_state_at_header_end.value =
s->c.code_word >> 16;
850 s->coder_state_at_header_end.bit_count = -
s->c.bits % 8;
859 av_clip(
s->mv_max.x, INT16_MIN, INT16_MAX));
861 av_clip(
s->mv_max.y, INT16_MIN, INT16_MAX));
874 for (
i = 0;
i < 3;
i++)
876 for (
i = (vp7 ? 7 : 9);
i > 3;
i--)
882 const uint8_t *ps = p + 2;
931 const uint8_t *mbsplits_top, *mbsplits_cur, *firstidx;
933 const VP8mv *left_mv = left_mb->
bmv;
939 top_mb = &
mb[-
s->mb_width - 1];
941 top_mv = top_mb->
bmv;
955 mb->partitioning = part_idx;
957 for (n = 0; n < num; n++) {
959 uint32_t
left, above;
960 const uint8_t *submv_prob;
967 above =
AV_RN32A(&top_mv[mbsplits_top[k + 12]]);
969 above =
AV_RN32A(&cur_mv[mbsplits_cur[k - 4]]);
976 mb->bmv[n].y =
mb->mv.y +
978 mb->bmv[n].x =
mb->mv.x +
1006 int xoffset,
int yoffset,
int boundary,
1007 int *edge_x,
int *edge_y)
1009 int vwidth = mb_width + 1;
1010 int new = (mb_y + yoffset) * vwidth + mb_x + xoffset;
1011 if (
new < boundary ||
new % vwidth == vwidth - 1)
1013 *edge_y =
new / vwidth;
1014 *edge_x =
new % vwidth;
1025 int mb_x,
int mb_y,
int layout)
1027 enum { CNT_ZERO, CNT_NEAREST, CNT_NEAR };
1028 enum { VP8_EDGE_TOP, VP8_EDGE_LEFT, VP8_EDGE_TOPLEFT };
1031 uint8_t cnt[3] = { 0 };
1044 pred->yoffset, !
s->profile, &edge_x, &edge_y)) {
1046 ?
s->macroblocks_base + 1 + edge_x +
1047 (
s->mb_width + 1) * (edge_y + 1)
1048 :
s->macroblocks + edge_x +
1049 (
s->mb_height - edge_y - 1) * 2;
1052 if (
AV_RN32A(&near_mv[CNT_NEAREST])) {
1055 }
else if (
AV_RN32A(&near_mv[CNT_NEAR])) {
1085 if (cnt[CNT_NEAREST] > cnt[CNT_NEAR])
1086 AV_WN32A(&
mb->mv, cnt[CNT_ZERO] > cnt[CNT_NEAREST] ? 0 :
AV_RN32A(&near_mv[CNT_NEAREST]));
1096 mb->bmv[0] =
mb->mv;
1099 mb->mv = near_mv[CNT_NEAR];
1100 mb->bmv[0] =
mb->mv;
1103 mb->mv = near_mv[CNT_NEAREST];
1104 mb->bmv[0] =
mb->mv;
1109 mb->bmv[0] =
mb->mv;
1115 int mb_x,
int mb_y,
int layout)
1120 enum { CNT_ZERO, CNT_NEAREST, CNT_NEAR, CNT_SPLITMV };
1121 enum { VP8_EDGE_TOP, VP8_EDGE_LEFT, VP8_EDGE_TOPLEFT };
1123 int cur_sign_bias =
s->sign_bias[
mb->ref_frame];
1124 const int8_t *sign_bias =
s->sign_bias;
1126 uint8_t cnt[4] = { 0 };
1130 mb_edge[0] =
mb + 2;
1131 mb_edge[2] =
mb + 1;
1133 mb_edge[0] =
mb -
s->mb_width - 1;
1134 mb_edge[2] =
mb -
s->mb_width - 2;
1142 #define MV_EDGE_CHECK(n) \
1144 const VP8Macroblock *edge = mb_edge[n]; \
1145 int edge_ref = edge->ref_frame; \
1146 if (edge_ref != VP8_FRAME_CURRENT) { \
1147 uint32_t mv = AV_RN32A(&edge->mv); \
1149 if (cur_sign_bias != sign_bias[edge_ref]) { \
1152 mv = ((mv & 0x7fff7fff) + \
1153 0x00010001) ^ (mv & 0x80008000); \
1155 if (!n || mv != AV_RN32A(&near_mv[idx])) \
1156 AV_WN32A(&near_mv[++idx], mv); \
1157 cnt[idx] += 1 + (n != 2); \
1159 cnt[CNT_ZERO] += 1 + (n != 2); \
1172 if (cnt[CNT_SPLITMV] &&
1173 AV_RN32A(&near_mv[1 + VP8_EDGE_TOP]) ==
AV_RN32A(&near_mv[1 + VP8_EDGE_TOPLEFT]))
1174 cnt[CNT_NEAREST] += 1;
1177 if (cnt[CNT_NEAR] > cnt[CNT_NEAREST]) {
1178 FFSWAP(uint8_t, cnt[CNT_NEAREST], cnt[CNT_NEAR]);
1179 FFSWAP(
VP8mv, near_mv[CNT_NEAREST], near_mv[CNT_NEAR]);
1185 clamp_mv(mv_bounds, &
mb->mv, &near_mv[CNT_ZERO + (cnt[CNT_NEAREST] >= cnt[CNT_ZERO])]);
1196 mb->bmv[0] =
mb->mv;
1199 clamp_mv(mv_bounds, &
mb->mv, &near_mv[CNT_NEAR]);
1200 mb->bmv[0] =
mb->mv;
1203 clamp_mv(mv_bounds, &
mb->mv, &near_mv[CNT_NEAREST]);
1204 mb->bmv[0] =
mb->mv;
1209 mb->bmv[0] =
mb->mv;
1215 int mb_x,
int keyframe,
int layout)
1217 uint8_t *intra4x4 =
mb->intra4x4_pred_mode_mb;
1226 uint8_t *
const left =
s->intra4x4_pred_mode_left;
1228 top =
mb->intra4x4_pred_mode_top;
1230 top =
s->intra4x4_pred_mode_top + 4 * mb_x;
1231 for (y = 0; y < 4; y++) {
1232 for (x = 0; x < 4; x++) {
1236 left[y] = top[x] = *intra4x4;
1242 for (
i = 0;
i < 16;
i++)
1254 static const char *
const vp7_feature_name[] = {
"q-index",
1256 "partial-golden-update",
1261 for (
i = 0;
i < 4;
i++) {
1262 if (
s->feature_enabled[
i]) {
1265 s->feature_index_prob[
i]);
1267 "Feature %s present in macroblock (value 0x%x)\n",
1268 vp7_feature_name[
i],
s->feature_value[
i][
index]);
1272 }
else if (
s->segmentation.update_map) {
1275 }
else if (
s->segmentation.enabled)
1308 s->ref_count[
mb->ref_frame - 1]++;
1318 s->prob->pred16x16);
1344 int i,
const uint8_t *token_prob,
const int16_t qmul[2],
1345 const uint8_t scan[16],
int vp7)
1359 token_prob = probs[
i][0];
1367 token_prob = probs[
i + 1][1];
1387 int cat = (
a << 1) +
b;
1392 token_prob = probs[
i + 1][2];
1427 int i,
const uint8_t *token_prob,
1428 const int16_t qmul[2],
1429 const uint8_t scan[16])
1432 token_prob, qmul, scan,
IS_VP7);
1435 #ifndef vp8_decode_block_coeffs_internal
1439 int i,
const uint8_t *token_prob,
1440 const int16_t qmul[2])
1463 int i,
int zero_nhood,
const int16_t qmul[2],
1464 const uint8_t scan[16],
int vp7)
1466 const uint8_t *token_prob = probs[
i][zero_nhood];
1470 token_prob, qmul, scan)
1480 int i, x, y, luma_start = 0, luma_ctx = 3;
1481 int nnz_pred, nnz, nnz_total = 0;
1486 nnz_pred = t_nnz[8] + l_nnz[8];
1490 nnz_pred,
s->qmat[
segment].luma_dc_qmul,
1492 l_nnz[8] = t_nnz[8] = !!nnz;
1496 s->inter_dc_pred[
mb->ref_frame - 1]);
1503 s->vp8dsp.vp8_luma_dc_wht_dc(
td->block,
td->block_dc);
1505 s->vp8dsp.vp8_luma_dc_wht(
td->block,
td->block_dc);
1512 for (y = 0; y < 4; y++)
1513 for (x = 0; x < 4; x++) {
1514 nnz_pred = l_nnz[y] + t_nnz[x];
1516 s->prob->token[luma_ctx],
1517 luma_start, nnz_pred,
1519 s->prob[0].scan, is_vp7);
1522 td->non_zero_count_cache[y][x] = nnz + block_dc;
1523 t_nnz[x] = l_nnz[y] = !!nnz;
1530 for (
i = 4;
i < 6;
i++)
1531 for (y = 0; y < 2; y++)
1532 for (x = 0; x < 2; x++) {
1533 nnz_pred = l_nnz[
i + 2 * y] + t_nnz[
i + 2 * x];
1535 s->prob->token[2], 0, nnz_pred,
1537 s->prob[0].scan, is_vp7);
1538 td->non_zero_count_cache[
i][(y << 1) + x] = nnz;
1539 t_nnz[
i + 2 * x] = l_nnz[
i + 2 * y] = !!nnz;
1552 const uint8_t *src_cb,
const uint8_t *src_cr,
1553 ptrdiff_t linesize, ptrdiff_t uvlinesize,
int simple)
1555 AV_COPY128(top_border, src_y + 15 * linesize);
1557 AV_COPY64(top_border + 16, src_cb + 7 * uvlinesize);
1558 AV_COPY64(top_border + 24, src_cr + 7 * uvlinesize);
1564 uint8_t *src_cr, ptrdiff_t linesize, ptrdiff_t uvlinesize,
int mb_x,
1565 int mb_y,
int mb_width,
int simple,
int xchg)
1567 uint8_t *top_border_m1 = top_border - 32;
1569 src_cb -= uvlinesize;
1570 src_cr -= uvlinesize;
1572 #define XCHG(a, b, xchg) \
1580 XCHG(top_border_m1 + 8, src_y - 8, xchg);
1581 XCHG(top_border, src_y, xchg);
1582 XCHG(top_border + 8, src_y + 8, 1);
1583 if (mb_x < mb_width - 1)
1584 XCHG(top_border + 32, src_y + 16, 1);
1588 if (!simple || !mb_y) {
1589 XCHG(top_border_m1 + 16, src_cb - 8, xchg);
1590 XCHG(top_border_m1 + 24, src_cr - 8, xchg);
1591 XCHG(top_border + 16, src_cb, 1);
1592 XCHG(top_border + 24, src_cr, 1);
1642 int *copy_buf,
int vp7)
1646 if (!mb_x && mb_y) {
1680 int x, y,
mode, nnz;
1685 if (mb_y && (
s->deblock_filter || !mb_y) &&
td->thread_nr == 0)
1687 s->linesize,
s->uvlinesize, mb_x, mb_y,
s->mb_width,
1688 s->filter.simple, 1);
1692 s->hpc.pred16x16[
mode](dst[0],
s->linesize);
1694 uint8_t *ptr = dst[0];
1695 const uint8_t *intra4x4 =
mb->intra4x4_pred_mode_mb;
1696 const uint8_t lo = is_vp7 ? 128 : 127;
1697 const uint8_t hi = is_vp7 ? 128 : 129;
1698 const uint8_t tr_top[4] = { lo, lo, lo, lo };
1702 const uint8_t *tr_right = ptr -
s->linesize + 16;
1706 if (mb_y && mb_x ==
s->mb_width - 1) {
1707 tr = tr_right[-1] * 0x01010101
u;
1708 tr_right = (uint8_t *) &tr;
1714 for (y = 0; y < 4; y++) {
1715 const uint8_t *topright = ptr + 4 -
s->linesize;
1716 for (x = 0; x < 4; x++) {
1718 ptrdiff_t linesize =
s->linesize;
1719 uint8_t *dst = ptr + 4 * x;
1722 if ((y == 0 || x == 3) && mb_y == 0) {
1725 topright = tr_right;
1728 mb_y + y, &
copy, is_vp7);
1730 dst = copy_dst + 12;
1734 AV_WN32A(copy_dst + 4, lo * 0x01010101U);
1736 AV_COPY32(copy_dst + 4, ptr + 4 * x -
s->linesize);
1740 copy_dst[3] = ptr[4 * x -
s->linesize - 1];
1749 copy_dst[11] = ptr[4 * x - 1];
1750 copy_dst[19] = ptr[4 * x +
s->linesize - 1];
1751 copy_dst[27] = ptr[4 * x +
s->linesize * 2 - 1];
1752 copy_dst[35] = ptr[4 * x +
s->linesize * 3 - 1];
1755 s->hpc.pred4x4[
mode](dst, topright, linesize);
1758 AV_COPY32(ptr + 4 * x +
s->linesize, copy_dst + 20);
1759 AV_COPY32(ptr + 4 * x +
s->linesize * 2, copy_dst + 28);
1760 AV_COPY32(ptr + 4 * x +
s->linesize * 3, copy_dst + 36);
1763 nnz =
td->non_zero_count_cache[y][x];
1766 s->vp8dsp.vp8_idct_dc_add(ptr + 4 * x,
1767 td->block[y][x],
s->linesize);
1769 s->vp8dsp.vp8_idct_add(ptr + 4 * x,
1770 td->block[y][x],
s->linesize);
1775 ptr += 4 *
s->linesize;
1781 mb_x, mb_y, is_vp7);
1782 s->hpc.pred8x8[
mode](dst[1],
s->uvlinesize);
1783 s->hpc.pred8x8[
mode](dst[2],
s->uvlinesize);
1785 if (mb_y && (
s->deblock_filter || !mb_y) &&
td->thread_nr == 0)
1787 s->linesize,
s->uvlinesize, mb_x, mb_y,
s->mb_width,
1788 s->filter.simple, 0);
1792 { 0, 1, 2, 1, 2, 1, 2, 1 },
1794 { 0, 3, 5, 3, 5, 3, 5, 3 },
1795 { 0, 2, 3, 2, 3, 2, 3, 2 },
1817 int x_off,
int y_off,
int block_w,
int block_h,
1821 const uint8_t *
src =
ref->f->data[0];
1824 ptrdiff_t src_linesize = linesize;
1829 x_off +=
mv->x >> 2;
1830 y_off +=
mv->y >> 2;
1834 src += y_off * linesize + x_off;
1837 s->vdsp.emulated_edge_mc(
td->edge_emu_buffer,
1838 src - my_idx * linesize - mx_idx,
1842 x_off - mx_idx, y_off - my_idx,
1847 mc_func[my_idx][mx_idx](dst, linesize,
src, src_linesize, block_h, mx, my);
1850 mc_func[0][0](dst, linesize,
src + y_off * linesize + x_off,
1851 linesize, block_h, 0, 0);
1875 int x_off,
int y_off,
int block_w,
int block_h,
1885 x_off +=
mv->x >> 3;
1886 y_off +=
mv->y >> 3;
1889 src1 += y_off * linesize + x_off;
1890 src2 += y_off * linesize + x_off;
1894 s->vdsp.emulated_edge_mc(
td->edge_emu_buffer,
1895 src1 - my_idx * linesize - mx_idx,
1903 s->vdsp.emulated_edge_mc(
td->edge_emu_buffer,
1904 src2 - my_idx * linesize - mx_idx,
1912 mc_func[my_idx][mx_idx](dst1, linesize,
src1, linesize, block_h, mx, my);
1913 mc_func[my_idx][mx_idx](dst2, linesize,
src2, linesize, block_h, mx, my);
1917 mc_func[0][0](dst1, linesize,
src1 + y_off * linesize + x_off, linesize, block_h, 0, 0);
1918 mc_func[0][0](dst2, linesize,
src2 + y_off * linesize + x_off, linesize, block_h, 0, 0);
1925 int bx_off,
int by_off,
int block_w,
int block_h,
1934 s->put_pixels_tab[block_w == 8]);
1937 if (
s->profile == 3) {
1952 dst[2] + by_off *
s->uvlinesize + bx_off,
ref_frame,
1953 &uvmv, x_off + bx_off, y_off + by_off,
1955 s->put_pixels_tab[1 + (block_w == 4)]);
1962 int mb_x,
int mb_y,
int mb_xy,
int ref)
1965 if (
s->ref_count[
ref - 1] > (mb_xy >> 5)) {
1966 int x_off = mb_x << 4, y_off = mb_y << 4;
1967 int mx = (
mb->mv.x >> 2) + x_off + 8;
1968 int my = (
mb->mv.y >> 2) + y_off;
1969 uint8_t **
src =
s->framep[
ref]->tf.f->data;
1970 int off = mx + (my + (mb_x & 3) * 4) *
s->linesize + 64;
1974 s->vdsp.prefetch(
src[0] + off,
s->linesize, 4);
1975 off = (mx >> 1) + ((my >> 1) + (mb_x & 7)) *
s->uvlinesize + 64;
1976 s->vdsp.prefetch(
src[1] + off,
src[2] -
src[1], 2);
1987 int x_off = mb_x << 4, y_off = mb_y << 4;
1992 switch (
mb->partitioning) {
2002 for (y = 0; y < 4; y++) {
2003 for (x = 0; x < 4; x++) {
2005 ref, &bmv[4 * y + x],
2006 4 * x + x_off, 4 * y + y_off, 4, 4,
2008 s->put_pixels_tab[2]);
2017 for (y = 0; y < 2; y++) {
2018 for (x = 0; x < 2; x++) {
2019 uvmv.
x =
mb->bmv[2 * y * 4 + 2 * x ].x +
2020 mb->bmv[2 * y * 4 + 2 * x + 1].x +
2021 mb->bmv[(2 * y + 1) * 4 + 2 * x ].x +
2022 mb->bmv[(2 * y + 1) * 4 + 2 * x + 1].x;
2023 uvmv.
y =
mb->bmv[2 * y * 4 + 2 * x ].y +
2024 mb->bmv[2 * y * 4 + 2 * x + 1].y +
2025 mb->bmv[(2 * y + 1) * 4 + 2 * x ].y +
2026 mb->bmv[(2 * y + 1) * 4 + 2 * x + 1].y;
2029 if (
s->profile == 3) {
2034 dst[2] + 4 * y *
s->uvlinesize + x * 4,
ref,
2035 &uvmv, 4 * x + x_off, 4 * y + y_off, 4, 4,
2037 s->put_pixels_tab[2]);
2074 uint8_t *y_dst = dst[0];
2075 for (y = 0; y < 4; y++) {
2076 uint32_t nnz4 =
AV_RL32(
td->non_zero_count_cache[y]);
2078 if (nnz4 & ~0x01010101) {
2079 for (x = 0; x < 4; x++) {
2080 if ((uint8_t) nnz4 == 1)
2081 s->vp8dsp.vp8_idct_dc_add(y_dst + 4 * x,
2084 else if ((uint8_t) nnz4 > 1)
2085 s->vp8dsp.vp8_idct_add(y_dst + 4 * x,
2093 s->vp8dsp.vp8_idct_dc_add4y(y_dst,
td->block[y],
s->linesize);
2096 y_dst += 4 *
s->linesize;
2100 for (ch = 0; ch < 2; ch++) {
2101 uint32_t nnz4 =
AV_RL32(
td->non_zero_count_cache[4 + ch]);
2103 uint8_t *ch_dst = dst[1 + ch];
2104 if (nnz4 & ~0x01010101) {
2105 for (y = 0; y < 2; y++) {
2106 for (x = 0; x < 2; x++) {
2107 if ((uint8_t) nnz4 == 1)
2108 s->vp8dsp.vp8_idct_dc_add(ch_dst + 4 * x,
2109 td->block[4 + ch][(y << 1) + x],
2111 else if ((uint8_t) nnz4 > 1)
2112 s->vp8dsp.vp8_idct_add(ch_dst + 4 * x,
2113 td->block[4 + ch][(y << 1) + x],
2117 goto chroma_idct_end;
2119 ch_dst += 4 *
s->uvlinesize;
2122 s->vp8dsp.vp8_idct_dc_add4uv(ch_dst,
td->block[4 + ch],
s->uvlinesize);
2134 int interior_limit, filter_level;
2136 if (
s->segmentation.enabled) {
2137 filter_level =
s->segmentation.filter_level[
mb->segment];
2138 if (!
s->segmentation.absolute_vals)
2139 filter_level +=
s->filter.level;
2141 filter_level =
s->filter.level;
2143 if (
s->lf_delta.enabled) {
2144 filter_level +=
s->lf_delta.ref[
mb->ref_frame];
2145 filter_level +=
s->lf_delta.mode[
mb->mode];
2150 interior_limit = filter_level;
2151 if (
s->filter.sharpness) {
2152 interior_limit >>= (
s->filter.sharpness + 3) >> 2;
2153 interior_limit =
FFMIN(interior_limit, 9 -
s->filter.sharpness);
2155 interior_limit =
FFMAX(interior_limit, 1);
2157 f->filter_level = filter_level;
2158 f->inner_limit = interior_limit;
2159 f->inner_filter = is_vp7 || !
mb->skip ||
mb->mode ==
MODE_I4x4 ||
2165 int mb_x,
int mb_y,
int is_vp7)
2167 int mbedge_lim, bedge_lim_y, bedge_lim_uv, hev_thresh;
2168 int filter_level =
f->filter_level;
2169 int inner_limit =
f->inner_limit;
2170 int inner_filter =
f->inner_filter;
2171 ptrdiff_t linesize =
s->linesize;
2172 ptrdiff_t uvlinesize =
s->uvlinesize;
2173 static const uint8_t hev_thresh_lut[2][64] = {
2174 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
2175 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2176 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
2178 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
2179 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2180 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2188 bedge_lim_y = filter_level;
2189 bedge_lim_uv = filter_level * 2;
2190 mbedge_lim = filter_level + 2;
2193 bedge_lim_uv = filter_level * 2 + inner_limit;
2194 mbedge_lim = bedge_lim_y + 4;
2197 hev_thresh = hev_thresh_lut[
s->keyframe][filter_level];
2200 s->vp8dsp.vp8_h_loop_filter16y(dst[0], linesize,
2201 mbedge_lim, inner_limit, hev_thresh);
2202 s->vp8dsp.vp8_h_loop_filter8uv(dst[1], dst[2], uvlinesize,
2203 mbedge_lim, inner_limit, hev_thresh);
2206 #define H_LOOP_FILTER_16Y_INNER(cond) \
2207 if (cond && inner_filter) { \
2208 s->vp8dsp.vp8_h_loop_filter16y_inner(dst[0] + 4, linesize, \
2209 bedge_lim_y, inner_limit, \
2211 s->vp8dsp.vp8_h_loop_filter16y_inner(dst[0] + 8, linesize, \
2212 bedge_lim_y, inner_limit, \
2214 s->vp8dsp.vp8_h_loop_filter16y_inner(dst[0] + 12, linesize, \
2215 bedge_lim_y, inner_limit, \
2217 s->vp8dsp.vp8_h_loop_filter8uv_inner(dst[1] + 4, dst[2] + 4, \
2218 uvlinesize, bedge_lim_uv, \
2219 inner_limit, hev_thresh); \
2225 s->vp8dsp.vp8_v_loop_filter16y(dst[0], linesize,
2226 mbedge_lim, inner_limit, hev_thresh);
2227 s->vp8dsp.vp8_v_loop_filter8uv(dst[1], dst[2], uvlinesize,
2228 mbedge_lim, inner_limit, hev_thresh);
2232 s->vp8dsp.vp8_v_loop_filter16y_inner(dst[0] + 4 * linesize,
2233 linesize, bedge_lim_y,
2234 inner_limit, hev_thresh);
2235 s->vp8dsp.vp8_v_loop_filter16y_inner(dst[0] + 8 * linesize,
2236 linesize, bedge_lim_y,
2237 inner_limit, hev_thresh);
2238 s->vp8dsp.vp8_v_loop_filter16y_inner(dst[0] + 12 * linesize,
2239 linesize, bedge_lim_y,
2240 inner_limit, hev_thresh);
2241 s->vp8dsp.vp8_v_loop_filter8uv_inner(dst[1] + 4 * uvlinesize,
2242 dst[2] + 4 * uvlinesize,
2243 uvlinesize, bedge_lim_uv,
2244 inner_limit, hev_thresh);
2254 int mbedge_lim, bedge_lim;
2255 int filter_level =
f->filter_level;
2256 int inner_limit =
f->inner_limit;
2257 int inner_filter =
f->inner_filter;
2258 ptrdiff_t linesize =
s->linesize;
2263 bedge_lim = 2 * filter_level + inner_limit;
2264 mbedge_lim = bedge_lim + 4;
2267 s->vp8dsp.vp8_h_loop_filter_simple(dst, linesize, mbedge_lim);
2269 s->vp8dsp.vp8_h_loop_filter_simple(dst + 4, linesize, bedge_lim);
2270 s->vp8dsp.vp8_h_loop_filter_simple(dst + 8, linesize, bedge_lim);
2271 s->vp8dsp.vp8_h_loop_filter_simple(dst + 12, linesize, bedge_lim);
2275 s->vp8dsp.vp8_v_loop_filter_simple(dst, linesize, mbedge_lim);
2277 s->vp8dsp.vp8_v_loop_filter_simple(dst + 4 * linesize, linesize, bedge_lim);
2278 s->vp8dsp.vp8_v_loop_filter_simple(dst + 8 * linesize, linesize, bedge_lim);
2279 s->vp8dsp.vp8_v_loop_filter_simple(dst + 12 * linesize, linesize, bedge_lim);
2283 #define MARGIN (16 << 2)
2286 const VP8Frame *prev_frame,
int is_vp7)
2291 s->mv_bounds.mv_min.y = -
MARGIN;
2292 s->mv_bounds.mv_max.y = ((
s->mb_height - 1) << 6) +
MARGIN;
2293 for (mb_y = 0; mb_y <
s->mb_height; mb_y++) {
2295 ((
s->mb_width + 1) * (mb_y + 1) + 1);
2296 int mb_xy = mb_y *
s->mb_width;
2300 s->mv_bounds.mv_min.x = -
MARGIN;
2301 s->mv_bounds.mv_max.x = ((
s->mb_width - 1) << 6) +
MARGIN;
2303 for (mb_x = 0; mb_x <
s->mb_width; mb_x++, mb_xy++,
mb++) {
2308 AV_WN32A((
mb -
s->mb_width - 1)->intra4x4_pred_mode_top,
2311 prev_frame && prev_frame->
seg_map ?
2313 s->mv_bounds.mv_min.x -= 64;
2314 s->mv_bounds.mv_max.x -= 64;
2316 s->mv_bounds.mv_min.y -= 64;
2317 s->mv_bounds.mv_max.y -= 64;
2335 #define check_thread_pos(td, otd, mb_x_check, mb_y_check) \
2337 int tmp = (mb_y_check << 16) | (mb_x_check & 0xFFFF); \
2338 if (atomic_load(&otd->thread_mb_pos) < tmp) { \
2339 pthread_mutex_lock(&otd->lock); \
2340 atomic_store(&td->wait_mb_pos, tmp); \
2342 if (atomic_load(&otd->thread_mb_pos) >= tmp) \
2344 pthread_cond_wait(&otd->cond, &otd->lock); \
2346 atomic_store(&td->wait_mb_pos, INT_MAX); \
2347 pthread_mutex_unlock(&otd->lock); \
2351 #define update_pos(td, mb_y, mb_x) \
2353 int pos = (mb_y << 16) | (mb_x & 0xFFFF); \
2354 int sliced_threading = (avctx->active_thread_type == FF_THREAD_SLICE) && \
2356 int is_null = !next_td || !prev_td; \
2357 int pos_check = (is_null) ? 1 : \
2358 (next_td != td && pos >= atomic_load(&next_td->wait_mb_pos)) || \
2359 (prev_td != td && pos >= atomic_load(&prev_td->wait_mb_pos)); \
2360 atomic_store(&td->thread_mb_pos, pos); \
2361 if (sliced_threading && pos_check) { \
2362 pthread_mutex_lock(&td->lock); \
2363 pthread_cond_broadcast(&td->cond); \
2364 pthread_mutex_unlock(&td->lock); \
2368 #define check_thread_pos(td, otd, mb_x_check, mb_y_check) while(0)
2369 #define update_pos(td, mb_y, mb_x) while(0)
2373 int jobnr,
int threadnr,
int is_vp7)
2378 int mb_x, mb_xy = mb_y *
s->mb_width;
2379 int num_jobs =
s->num_jobs;
2380 const VP8Frame *prev_frame =
s->prev_frame;
2382 VPXRangeCoder *coeff_c = &
s->coeff_partition[mb_y & (
s->num_coeff_partitions - 1)];
2386 curframe->
tf.
f->
data[0] + 16 * mb_y *
s->linesize,
2387 curframe->
tf.
f->
data[1] + 8 * mb_y *
s->uvlinesize,
2388 curframe->
tf.
f->
data[2] + 8 * mb_y *
s->uvlinesize
2397 prev_td = &
s->thread_data[(jobnr + num_jobs - 1) % num_jobs];
2398 if (mb_y ==
s->mb_height - 1)
2401 next_td = &
s->thread_data[(jobnr + 1) % num_jobs];
2402 if (
s->mb_layout == 1)
2403 mb =
s->macroblocks_base + ((
s->mb_width + 1) * (mb_y + 1) + 1);
2407 if (prev_frame &&
s->segmentation.enabled &&
2408 !
s->segmentation.update_map)
2410 mb =
s->macroblocks + (
s->mb_height - mb_y - 1) * 2;
2411 memset(
mb - 1, 0,
sizeof(*
mb));
2415 if (!is_vp7 || mb_y == 0)
2416 memset(
td->left_nnz, 0,
sizeof(
td->left_nnz));
2419 td->mv_bounds.mv_max.x = ((
s->mb_width - 1) << 6) +
MARGIN;
2421 for (mb_x = 0; mb_x <
s->mb_width; mb_x++, mb_xy++,
mb++) {
2425 if (prev_td !=
td) {
2426 if (threadnr != 0) {
2428 mb_x + (is_vp7 ? 2 : 1),
2429 mb_y - (is_vp7 ? 2 : 1));
2432 mb_x + (is_vp7 ? 2 : 1) +
s->mb_width + 3,
2433 mb_y - (is_vp7 ? 2 : 1));
2437 s->vdsp.prefetch(dst[0] + (mb_x & 3) * 4 *
s->linesize + 64,
2439 s->vdsp.prefetch(dst[1] + (mb_x & 7) *
s->uvlinesize + 64,
2440 dst[2] - dst[1], 2);
2444 prev_frame && prev_frame->
seg_map ?
2471 td->left_nnz[8] = 0;
2472 s->top_nnz[mb_x][8] = 0;
2476 if (
s->deblock_filter)
2479 if (
s->deblock_filter && num_jobs != 1 && threadnr == num_jobs - 1) {
2480 if (
s->filter.simple)
2485 dst[1], dst[2],
s->linesize,
s->uvlinesize, 0);
2493 td->mv_bounds.mv_min.x -= 64;
2494 td->mv_bounds.mv_max.x -= 64;
2496 if (mb_x ==
s->mb_width + 1) {
2506 int jobnr,
int threadnr)
2512 int jobnr,
int threadnr)
2518 int jobnr,
int threadnr,
int is_vp7)
2522 int mb_x, mb_y =
atomic_load(&
td->thread_mb_pos) >> 16, num_jobs =
s->num_jobs;
2523 AVFrame *curframe =
s->curframe->tf.f;
2527 curframe->
data[0] + 16 * mb_y *
s->linesize,
2528 curframe->
data[1] + 8 * mb_y *
s->uvlinesize,
2529 curframe->
data[2] + 8 * mb_y *
s->uvlinesize
2532 if (
s->mb_layout == 1)
2533 mb =
s->macroblocks_base + ((
s->mb_width + 1) * (mb_y + 1) + 1);
2535 mb =
s->macroblocks + (
s->mb_height - mb_y - 1) * 2;
2540 prev_td = &
s->thread_data[(jobnr + num_jobs - 1) % num_jobs];
2541 if (mb_y ==
s->mb_height - 1)
2544 next_td = &
s->thread_data[(jobnr + 1) % num_jobs];
2546 for (mb_x = 0; mb_x <
s->mb_width; mb_x++,
mb++) {
2550 (mb_x + 1) + (
s->mb_width + 3), mb_y - 1);
2552 if (next_td != &
s->thread_data[0])
2555 if (num_jobs == 1) {
2556 if (
s->filter.simple)
2561 dst[1], dst[2],
s->linesize,
s->uvlinesize, 0);
2564 if (
s->filter.simple)
2577 int jobnr,
int threadnr)
2583 int jobnr,
int threadnr)
2590 int threadnr,
int is_vp7)
2596 int mb_y, num_jobs =
s->num_jobs;
2599 td->thread_nr = threadnr;
2600 td->mv_bounds.mv_min.y = -
MARGIN - 64 * threadnr;
2601 td->mv_bounds.mv_max.y = ((
s->mb_height - 1) << 6) +
MARGIN - 64 * threadnr;
2602 for (mb_y = jobnr; mb_y <
s->mb_height; mb_y += num_jobs) {
2604 ret =
s->decode_mb_row_no_filter(avctx, tdata, jobnr, threadnr);
2609 if (
s->deblock_filter)
2610 s->filter_mb_row(avctx, tdata, jobnr, threadnr);
2613 td->mv_bounds.mv_min.y -= 64 * num_jobs;
2614 td->mv_bounds.mv_max.y -= 64 * num_jobs;
2624 int jobnr,
int threadnr)
2630 int jobnr,
int threadnr)
2640 int ret,
i, referenced, num_jobs;
2652 if (!is_vp7 &&
s->actually_webp) {
2660 if (
s->pix_fmt < 0) {
2678 memcpy(&
s->next_framep[0], &
s->framep[0],
sizeof(
s->framep[0]) * 4);
2684 for (
i = 0;
i < 5;
i++)
2685 if (
s->frames[
i].tf.f &&
2686 &
s->frames[
i] != prev_frame &&
2709 "Discarding interframe without a prior keyframe!\n");
2741 if (!is_vp7 && !
s->actually_webp)
2759 s->linesize = curframe->tf.f->linesize[0];
2760 s->uvlinesize = curframe->tf.f->linesize[1];
2762 memset(
s->top_nnz, 0,
s->mb_width *
sizeof(*
s->top_nnz));
2766 memset(
s->macroblocks +
s->mb_height * 2 - 1, 0,
2767 (
s->mb_width + 1) *
sizeof(*
s->macroblocks));
2768 if (!
s->mb_layout &&
s->keyframe)
2769 memset(
s->intra4x4_pred_mode_top,
DC_PRED,
s->mb_width * 4);
2771 memset(
s->ref_count, 0,
sizeof(
s->ref_count));
2773 if (
s->mb_layout == 1) {
2776 if (prev_frame &&
s->segmentation.enabled &&
2777 !
s->segmentation.update_map)
2791 s->num_jobs = num_jobs;
2792 s->curframe = curframe;
2793 s->prev_frame = prev_frame;
2794 s->mv_bounds.mv_min.y = -
MARGIN;
2795 s->mv_bounds.mv_max.y = ((
s->mb_height - 1) << 6) +
MARGIN;
2810 memcpy(&
s->framep[0], &
s->next_framep[0],
sizeof(
s->framep[0]) * 4);
2815 if (!
s->update_probabilities)
2816 s->prob[0] =
s->prob[1];
2818 if (!
s->invisible) {
2826 memcpy(&
s->next_framep[0], &
s->framep[0],
sizeof(
s->framep[0]) * 4);
2836 #if CONFIG_VP7_DECODER
2863 if (CONFIG_VP7_DECODER && is_vp7) {
2868 }
else if (CONFIG_VP8_DECODER && !is_vp7) {
2881 #if CONFIG_VP7_DECODER
2893 #if CONFIG_VP8_DECODER
2900 src->hwaccel_picture_private);
2903 #define REBASE(pic) ((pic) ? (pic) - &s_src->frames[0] + &s->frames[0] : NULL)
2910 if (
s->macroblocks_base &&
2911 (s_src->mb_width !=
s->mb_width || s_src->mb_height !=
s->mb_height)) {
2913 s->mb_width = s_src->mb_width;
2914 s->mb_height = s_src->mb_height;
2917 s->pix_fmt = s_src->pix_fmt;
2918 s->prob[0] = s_src->prob[!s_src->update_probabilities];
2919 s->segmentation = s_src->segmentation;
2920 s->lf_delta = s_src->lf_delta;
2921 memcpy(
s->sign_bias, s_src->sign_bias,
sizeof(
s->sign_bias));
2924 vp8_replace_frame(&
s->frames[
i], &s_src->frames[
i]);
2926 s->framep[0] = REBASE(s_src->next_framep[0]);
2927 s->framep[1] = REBASE(s_src->next_framep[1]);
2928 s->framep[2] = REBASE(s_src->next_framep[2]);
2929 s->framep[3] = REBASE(s_src->next_framep[3]);
2936 #if CONFIG_VP7_DECODER
2943 .
init = vp7_decode_init,
2952 #if CONFIG_VP8_DECODER
2968 #if CONFIG_VP8_VAAPI_HWACCEL
2971 #if CONFIG_VP8_NVDEC_HWACCEL
static const int vp8_mode_contexts[6][4]
static const uint8_t vp8_dct_cat1_prob[]
void ff_progress_frame_report(ProgressFrame *f, int n)
Notify later decoding threads when part of their reference frame is ready.
static av_always_inline void decode_mb_mode(VP8Context *s, const VP8mvbounds *mv_bounds, VP8Macroblock *mb, int mb_x, int mb_y, uint8_t *segment, const uint8_t *ref, int layout, int is_vp7)
#define VP7_MV_PRED_COUNT
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
av_cold int ff_vp8_decode_free(AVCodecContext *avctx)
static const uint8_t vp7_pred4x4_mode[]
static av_always_inline int decode_block_coeffs_internal(VPXRangeCoder *r, int16_t block[16], uint8_t probs[16][3][NUM_DCT_TOKENS - 1], int i, const uint8_t *token_prob, const int16_t qmul[2], const uint8_t scan[16], int vp7)
static void vp8_release_frame(VP8Frame *f)
static const VP7MVPred vp7_mv_pred[VP7_MV_PRED_COUNT]
#define AV_LOG_WARNING
Something somehow does not look correct.
@ AV_PIX_FMT_CUDA
HW acceleration through CUDA.
AVPixelFormat
Pixel format.
static int vp8_decode_block_coeffs_internal(VPXRangeCoder *r, int16_t block[16], uint8_t probs[16][3][NUM_DCT_TOKENS - 1], int i, const uint8_t *token_prob, const int16_t qmul[2])
static int vp7_read_mv_component(VPXRangeCoder *c, const uint8_t *p)
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 guar...
#define atomic_store(object, desired)
static av_always_inline void backup_mb_border(uint8_t *top_border, const uint8_t *src_y, const uint8_t *src_cb, const uint8_t *src_cr, ptrdiff_t linesize, ptrdiff_t uvlinesize, int simple)
static void vp7_filter_mb_row(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
enum AVColorSpace colorspace
YUV colorspace type.
static av_always_inline int vp78_decode_init(AVCodecContext *avctx, int is_vp7)
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
#define u(width, name, range_min, range_max)
static av_always_inline int check_tm_pred8x8_mode(int mode, int mb_x, int mb_y, int vp7)
static const uint8_t vp8_submv_prob[5][3]
static av_always_inline int pthread_mutex_init(pthread_mutex_t *mutex, const pthread_mutexattr_t *attr)
static const uint16_t vp7_ydc_qlookup[]
#define HOR_VP8_PRED
unaveraged version of HOR_PRED, see
static const int8_t mv[256][2]
static av_always_inline void vp7_decode_mvs(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y, int layout)
static const uint8_t vp7_mv_default_prob[2][17]
static av_always_inline int check_intra_pred4x4_mode_emuedge(int mode, int mb_x, int mb_y, int *copy_buf, int vp7)
const uint8_t ff_vp8_token_update_probs[4][8][3][11]
static av_always_inline int check_tm_pred4x4_mode(int mode, int mb_x, int mb_y, int vp7)
static const uint16_t vp7_y2dc_qlookup[]
static av_always_inline void vp8_mc_chroma(VP8Context *s, VP8ThreadData *td, uint8_t *dst1, uint8_t *dst2, const ProgressFrame *ref, const VP8mv *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
This structure describes decoded (raw) audio or video data.
@ AVCOL_RANGE_JPEG
Full range content.
static av_always_inline int inter_predict_dc(int16_t block[16], int16_t pred[2])
int ff_progress_frame_get_buffer(AVCodecContext *avctx, ProgressFrame *f, int flags)
This function sets up the ProgressFrame, i.e.
static void vp8_get_quants(VP8Context *s)
#define FF_HW_SIMPLE_CALL(avctx, function)
static av_cold void vp8_decode_flush(AVCodecContext *avctx)
static av_always_inline void inter_predict(VP8Context *s, VP8ThreadData *td, uint8_t *const dst[3], VP8Macroblock *mb, int mb_x, int mb_y)
Apply motion vectors to prediction buffer, chapter 18.
@ VP8_SPLITMVMODE_4x4
4x4 blocks of 4x4px each
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
#define VERT_VP8_PRED
for VP8, VERT_PRED is the average of
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int vp8_decode_mb_row_no_filter(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)
static int vp8_rac_get_sint(VPXRangeCoder *c, int bits)
static const int8_t vp8_pred8x8c_tree[3][2]
#define bit(string, value)
#define update_pos(td, mb_y, mb_x)
static const VP8mv * get_bmv_ptr(const VP8Macroblock *mb, int subblock)
static av_always_inline int update_dimensions(VP8Context *s, int width, int height, int is_vp7)
@ AVCOL_SPC_BT470BG
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601
@ VP8_SPLITMVMODE_8x8
2x2 blocks of 8x8px each
static av_cold void vp8_decode_flush_impl(AVCodecContext *avctx, int free_mem)
AVCodec p
The public AVCodec.
static int ref_frame(VVCFrame *dst, const VVCFrame *src)
static const uint8_t vp8_mv_update_prob[2][19]
enum AVDiscard skip_frame
Skip decoding for selected frames.
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
const FFCodec ff_vp8_decoder
av_cold void ff_videodsp_init(VideoDSPContext *ctx, int bpc)
static av_always_inline void update(SilenceDetectContext *s, AVFrame *insamples, int is_silence, int current_sample, int64_t nb_samples_notify, AVRational time_base)
static av_always_inline void idct_mb(VP8Context *s, VP8ThreadData *td, uint8_t *const dst[3], const VP8Macroblock *mb)
static av_always_inline int check_intra_pred8x8_mode_emuedge(int mode, int mb_x, int mb_y, int vp7)
static av_always_inline void filter_level_for_mb(const VP8Context *s, const VP8Macroblock *mb, VP8FilterStrength *f, int is_vp7)
static av_always_inline int read_mv_component(VPXRangeCoder *c, const uint8_t *p, int vp7)
Motion vector coding, 17.1.
static void vp8_filter_mb_row(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)
static void vp7_get_quants(VP8Context *s)
@ VP8_SPLITMVMODE_16x8
2 16x8 blocks (vertical)
#define FF_CODEC_CAP_USES_PROGRESSFRAMES
The decoder might make use of the ProgressFrame API.
void ff_vp7dsp_init(VP8DSPContext *c)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void ff_vp8dsp_init(VP8DSPContext *c)
#define FF_ARRAY_ELEMS(a)
static const uint8_t vp8_dct_cat2_prob[]
#define AV_FRAME_FLAG_KEY
A flag to mark frames that are keyframes.
#define LOCAL_ALIGNED(a, t, v,...)
static const uint8_t vp8_pred4x4_mode[]
#define FF_CODEC_DECODE_CB(func)
int ff_hwaccel_frame_priv_alloc(AVCodecContext *avctx, void **hwaccel_picture_private)
Allocate a hwaccel frame private data if the provided avctx uses a hwaccel method that needs it.
static av_always_inline void filter_mb_simple(const VP8Context *s, uint8_t *dst, const VP8FilterStrength *f, int mb_x, int mb_y)
static av_always_inline unsigned int vpx_rac_renorm(VPXRangeCoder *c)
static const uint8_t vp8_pred8x8c_prob_inter[3]
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
static av_always_inline void vp8_mc_luma(VP8Context *s, VP8ThreadData *td, uint8_t *dst, const ProgressFrame *ref, const VP8mv *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
static const int8_t vp8_pred16x16_tree_intra[4][2]
static void parse_segment_info(VP8Context *s)
static const uint8_t vp8_pred4x4_prob_inter[9]
static enum AVPixelFormat pix_fmts[]
static const uint8_t vp8_mbsplits[5][16]
void ff_progress_frame_unref(ProgressFrame *f)
Give up a reference to the underlying frame contained in a ProgressFrame and reset the ProgressFrame,...
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before ff_progress_frame_await() has been called on them. reget_buffer() and buffer age optimizations no longer work. *The contents of buffers must not be written to after ff_progress_frame_report() has been called on them. This includes draw_edges(). Porting codecs to frame threading
static av_always_inline int vp78_decode_frame(AVCodecContext *avctx, AVFrame *rframe, int *got_frame, const AVPacket *avpkt, int is_vp7)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
static const int vp7_mode_contexts[31][4]
static av_always_inline int vp78_decode_mv_mb_modes(AVCodecContext *avctx, VP8Frame *curframe, const VP8Frame *prev_frame, int is_vp7)
@ AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
#define atomic_load(object)
@ VP8_SPLITMVMODE_8x16
2 8x16 blocks (horizontal)
#define CODEC_LONG_NAME(str)
uint8_t * seg_map
RefStruct reference.
static av_always_inline void vp8_mc_part(VP8Context *s, VP8ThreadData *td, uint8_t *const dst[3], const ProgressFrame *ref_frame, int x_off, int y_off, int bx_off, int by_off, int block_w, int block_h, int width, int height, const VP8mv *mv)
static const uint8_t vp8_mv_default_prob[2][19]
static const int8_t vp8_coeff_band_indexes[8][10]
static const uint8_t vp8_pred16x16_prob_inter[4]
#define AV_CODEC_CAP_FRAME_THREADS
Codec supports frame-level multithreading.
@ AVDISCARD_ALL
discard all
static int vp8_rac_get_nn(VPXRangeCoder *c)
static av_always_inline void clamp_mv(const VP8mvbounds *s, VP8mv *dst, const VP8mv *src)
static const int sizes[][2]
enum AVColorRange color_range
MPEG vs JPEG YUV range.
static int vp7_decode_mb_row_sliced(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)
static int vp8_update_dimensions(VP8Context *s, int width, int height)
@ AV_PICTURE_TYPE_I
Intra.
static av_unused int vp89_rac_get_uint(VPXRangeCoder *c, int bits)
#define check_thread_pos(td, otd, mb_x_check, mb_y_check)
void(* flush)(AVBSFContext *ctx)
void(* vp8_mc_func)(uint8_t *dst, ptrdiff_t dstStride, const uint8_t *src, ptrdiff_t srcStride, int h, int x, int y)
static const uint16_t vp7_yac_qlookup[]
static const uint8_t vp8_token_default_probs[4][8][3][NUM_DCT_TOKENS - 1]
static void * ff_refstruct_allocz(size_t size)
Equivalent to ff_refstruct_alloc_ext(size, 0, NULL, NULL)
static const uint8_t vp8_mbsplit_count[4]
#define UPDATE_THREAD_CONTEXT(func)
static av_always_inline void vp8_decode_mvs(VP8Context *s, const VP8mvbounds *mv_bounds, VP8Macroblock *mb, int mb_x, int mb_y, int layout)
#define FF_HW_HAS_CB(avctx, function)
static av_always_inline int decode_mb_row_no_filter(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr, int is_vp7)
static const uint8_t vp7_feature_value_size[2][4]
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
av_cold int ff_vp8_decode_init(AVCodecContext *avctx)
static const uint8_t vp8_mbfirstidx[4][16]
@ AVDISCARD_NONKEY
discard all frames except keyframes
int(* init)(AVBSFContext *ctx)
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)
const uint8_t ff_zigzag_scan[16+1]
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
static const int8_t vp8_pred4x4_tree[9][2]
Tag MUST be and< 10hcoeff half pel interpolation filter coefficients, hcoeff[0] are the 2 middle coefficients[1] are the next outer ones and so on, resulting in a filter like:...eff[2], hcoeff[1], hcoeff[0], hcoeff[0], hcoeff[1], hcoeff[2] ... the sign of the coefficients is not explicitly stored but alternates after each coeff and coeff[0] is positive, so ...,+,-,+,-,+,+,-,+,-,+,... hcoeff[0] is not explicitly stored but found by subtracting the sum of all stored coefficients with signs from 32 hcoeff[0]=32 - hcoeff[1] - hcoeff[2] - ... a good choice for hcoeff and htaps is htaps=6 hcoeff={40,-10, 2} an alternative which requires more computations at both encoder and decoder side and may or may not be better is htaps=8 hcoeff={42,-14, 6,-2}ref_frames minimum of the number of available reference frames and max_ref_frames for example the first frame after a key frame always has ref_frames=1spatial_decomposition_type wavelet type 0 is a 9/7 symmetric compact integer wavelet 1 is a 5/3 symmetric compact integer wavelet others are reserved stored as delta from last, last is reset to 0 if always_reset||keyframeqlog quality(logarithmic quantizer scale) stored as delta from last, last is reset to 0 if always_reset||keyframemv_scale stored as delta from last, last is reset to 0 if always_reset||keyframe FIXME check that everything works fine if this changes between framesqbias dequantization bias stored as delta from last, last is reset to 0 if always_reset||keyframeblock_max_depth maximum depth of the block tree stored as delta from last, last is reset to 0 if always_reset||keyframequant_table quantization tableHighlevel bitstream structure:==============================--------------------------------------------|Header|--------------------------------------------|------------------------------------|||Block0||||split?||||yes no||||......... intra?||||:Block01 :yes no||||:Block02 :....... ..........||||:Block03 ::y DC ::ref index:||||:Block04 ::cb DC ::motion x :||||......... :cr DC ::motion y :||||....... ..........|||------------------------------------||------------------------------------|||Block1|||...|--------------------------------------------|------------ ------------ ------------|||Y subbands||Cb subbands||Cr subbands||||--- ---||--- ---||--- ---|||||LL0||HL0||||LL0||HL0||||LL0||HL0|||||--- ---||--- ---||--- ---||||--- ---||--- ---||--- ---|||||LH0||HH0||||LH0||HH0||||LH0||HH0|||||--- ---||--- ---||--- ---||||--- ---||--- ---||--- ---|||||HL1||LH1||||HL1||LH1||||HL1||LH1|||||--- ---||--- ---||--- ---||||--- ---||--- ---||--- ---|||||HH1||HL2||||HH1||HL2||||HH1||HL2|||||...||...||...|||------------ ------------ ------------|--------------------------------------------Decoding process:=================------------|||Subbands|------------||||------------|Intra DC||||LL0 subband prediction ------------|\ Dequantization ------------------- \||Reference frames|\ IDWT|------- -------|Motion \|||Frame 0||Frame 1||Compensation . OBMC v -------|------- -------|--------------. \------> Frame n output Frame Frame<----------------------------------/|...|------------------- Range Coder:============Binary Range Coder:------------------- The implemented range coder is an adapted version based upon "Range encoding: an algorithm for removing redundancy from a digitised message." by G. N. N. Martin. The symbols encoded by the Snow range coder are bits(0|1). The associated probabilities are not fix but change depending on the symbol mix seen so far. bit seen|new state ---------+----------------------------------------------- 0|256 - state_transition_table[256 - old_state];1|state_transition_table[old_state];state_transition_table={ 0, 0, 0, 0, 0, 0, 0, 0, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 190, 191, 192, 194, 194, 195, 196, 197, 198, 199, 200, 201, 202, 202, 204, 205, 206, 207, 208, 209, 209, 210, 211, 212, 213, 215, 215, 216, 217, 218, 219, 220, 220, 222, 223, 224, 225, 226, 227, 227, 229, 229, 230, 231, 232, 234, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 248, 0, 0, 0, 0, 0, 0, 0};FIXME Range Coding of integers:------------------------- FIXME Neighboring Blocks:===================left and top are set to the respective blocks unless they are outside of the image in which case they are set to the Null block top-left is set to the top left block unless it is outside of the image in which case it is set to the left block if this block has no larger parent block or it is at the left side of its parent block and the top right block is not outside of the image then the top right block is used for top-right else the top-left block is used Null block y, cb, cr are 128 level, ref, mx and my are 0 Motion Vector Prediction:=========================1. the motion vectors of all the neighboring blocks are scaled to compensate for the difference of reference frames scaled_mv=(mv *(256 *(current_reference+1)/(mv.reference+1))+128)> the median of the scaled top and top right vectors is used as motion vector prediction the used motion vector is the sum of the predictor and(mvx_diff, mvy_diff) *mv_scale Intra DC Prediction block[y][x] dc[1]
static void copy(const float *p1, float *p2, const int length)
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
static const uint8_t vp8_coeff_band[16]
static const uint8_t subpel_idx[3][8]
static int vp7_update_dimensions(VP8Context *s, int width, int height)
#define EDGE_EMU_LINESIZE
static void free_buffers(VP8Context *s)
static av_always_inline int decode_block_coeffs(VPXRangeCoder *c, int16_t block[16], uint8_t probs[16][3][NUM_DCT_TOKENS - 1], int i, int zero_nhood, const int16_t qmul[2], const uint8_t scan[16], int vp7)
#define FF_THREAD_SLICE
Decode more than one part of a single frame at once.
const uint8_t *const ff_vp8_dct_cat_prob[]
static const uint8_t vp8_pred8x8c_prob_intra[3]
static int vp8_decode_mv_mb_modes(AVCodecContext *avctx, VP8Frame *cur_frame, const VP8Frame *prev_frame)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_RL24
static const uint8_t vp8_pred4x4_prob_intra[10][10][9]
The reader does not expect b to be semantically here and if the code is changed by maybe adding a a division or other the signedness will almost certainly be mistaken To avoid this confusion a new type was SUINT is the C unsigned type but it holds a signed int to use the same example SUINT a
#define AV_CODEC_CAP_SLICE_THREADS
Codec supports slice-based (or partition-based) multithreading.
static int vp8_decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_size)
static const uint8_t vp8_mbsplit_prob[3]
static int setup_partitions(VP8Context *s, const uint8_t *buf, int buf_size)
static const int8_t vp8_pred16x16_tree_inter[4][2]
static const int8_t vp7_feature_index_tree[4][2]
enum AVDiscard skip_loop_filter
Skip loop filtering for selected frames.
#define HWACCEL_NVDEC(codec)
static av_always_inline int vpx_rac_is_end(VPXRangeCoder *c)
returns 1 if the end of the stream has been reached, 0 otherwise.
@ AV_PIX_FMT_VAAPI
Hardware acceleration through VA-API, data[3] contains a VASurfaceID.
static av_always_inline int pthread_cond_destroy(pthread_cond_t *cond)
#define FF_THREAD_FRAME
Decode more than one frame at once.
#define H_LOOP_FILTER_16Y_INNER(cond)
static av_always_inline int vp78_decode_mb_row_sliced(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr, int is_vp7)
static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel layout
static VP8FrameType ref_to_update(VP8Context *s, int update, VP8FrameType ref)
Determine which buffers golden and altref should be updated with after this frame.
static int vp8_read_mv_component(VPXRangeCoder *c, const uint8_t *p)
#define i(width, name, range_min, range_max)
static const SiprModeParam modes[MODE_COUNT]
static int vp7_fade_frame(VP8Context *s, int alpha, int beta)
static av_always_inline int vpx_rac_get_prob_branchy(VPXRangeCoder *c, int prob)
static av_always_inline void intra_predict(VP8Context *s, VP8ThreadData *td, uint8_t *const dst[3], VP8Macroblock *mb, int mb_x, int mb_y, int is_vp7)
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
const char * name
Name of the codec implementation.
static void vp78_reset_probability_tables(VP8Context *s)
static int vp7_decode_frame_header(VP8Context *s, const uint8_t *buf, int buf_size)
static void fade(uint8_t *dst, ptrdiff_t dst_linesize, const uint8_t *src, ptrdiff_t src_linesize, int width, int height, int alpha, int beta)
static av_always_inline void decode_intra4x4_modes(VP8Context *s, VPXRangeCoder *c, VP8Macroblock *mb, int mb_x, int keyframe, int layout)
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
@ AVCOL_RANGE_MPEG
Narrow or limited range content.
static int vp8_decode_mb_row_sliced(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)
const FFCodec ff_vp7_decoder
@ VP8_SPLITMVMODE_NONE
(only used in prediction) no split MVs
static av_always_inline void prefetch_motion(const VP8Context *s, const VP8Macroblock *mb, int mb_x, int mb_y, int mb_xy, int ref)
static av_always_inline int vp89_rac_get_tree(VPXRangeCoder *c, const int8_t(*tree)[2], const uint8_t *probs)
static av_always_inline void decode_mb_coeffs(VP8Context *s, VP8ThreadData *td, VPXRangeCoder *c, VP8Macroblock *mb, uint8_t t_nnz[9], uint8_t l_nnz[9], int is_vp7)
#define AV_LOG_FATAL
Something went wrong and recovery is not possible.
static av_always_inline int check_dc_pred8x8_mode(int mode, int mb_x, int mb_y)
static const float pred[4]
static int vp7_decode_mb_row_no_filter(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr)
#define FFSWAP(type, a, b)
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
static const uint8_t vp8_pred16x16_prob_intra[4]
static const uint16_t vp8_ac_qlookup[VP8_MAX_QUANT+1]
#define prob(name, subs,...)
static const char * hwaccel
int ff_vpx_init_range_decoder(VPXRangeCoder *c, const uint8_t *buf, int buf_size)
void ff_refstruct_replace(void *dstp, const void *src)
Ensure *dstp refers to the same object as src.
the pkt_dts and pkt_pts fields in AVFrame will work as usual Restrictions on codec whose streams don t reset across will not work because their bitstreams cannot be decoded in parallel *The contents of buffers must not be read before as well as code calling up to before the decode process starts Call ff_thread_finish_setup() afterwards. If some code can 't be moved
Tag MUST be and< 10hcoeff half pel interpolation filter coefficients, hcoeff[0] are the 2 middle coefficients[1] are the next outer ones and so on, resulting in a filter like:...eff[2], hcoeff[1], hcoeff[0], hcoeff[0], hcoeff[1], hcoeff[2] ... the sign of the coefficients is not explicitly stored but alternates after each coeff and coeff[0] is positive, so ...,+,-,+,-,+,+,-,+,-,+,... hcoeff[0] is not explicitly stored but found by subtracting the sum of all stored coefficients with signs from 32 hcoeff[0]=32 - hcoeff[1] - hcoeff[2] - ... a good choice for hcoeff and htaps is htaps=6 hcoeff={40,-10, 2} an alternative which requires more computations at both encoder and decoder side and may or may not be better is htaps=8 hcoeff={42,-14, 6,-2}ref_frames minimum of the number of available reference frames and max_ref_frames for example the first frame after a key frame always has ref_frames=1spatial_decomposition_type wavelet type 0 is a 9/7 symmetric compact integer wavelet 1 is a 5/3 symmetric compact integer wavelet others are reserved stored as delta from last, last is reset to 0 if always_reset||keyframeqlog quality(logarithmic quantizer scale) stored as delta from last, last is reset to 0 if always_reset||keyframemv_scale stored as delta from last, last is reset to 0 if always_reset||keyframe FIXME check that everything works fine if this changes between framesqbias dequantization bias stored as delta from last, last is reset to 0 if always_reset||keyframeblock_max_depth maximum depth of the block tree stored as delta from last, last is reset to 0 if always_reset||keyframequant_table quantization tableHighlevel bitstream structure:==============================--------------------------------------------|Header|--------------------------------------------|------------------------------------|||Block0||||split?||||yes no||||......... intra?||||:Block01 :yes no||||:Block02 :....... ..........||||:Block03 ::y DC ::ref index:||||:Block04 ::cb DC ::motion x :||||......... :cr DC ::motion y :||||....... ..........|||------------------------------------||------------------------------------|||Block1|||...|--------------------------------------------|------------ ------------ ------------|||Y subbands||Cb subbands||Cr subbands||||--- ---||--- ---||--- ---|||||LL0||HL0||||LL0||HL0||||LL0||HL0|||||--- ---||--- ---||--- ---||||--- ---||--- ---||--- ---|||||LH0||HH0||||LH0||HH0||||LH0||HH0|||||--- ---||--- ---||--- ---||||--- ---||--- ---||--- ---|||||HL1||LH1||||HL1||LH1||||HL1||LH1|||||--- ---||--- ---||--- ---||||--- ---||--- ---||--- ---|||||HH1||HL2||||HH1||HL2||||HH1||HL2|||||...||...||...|||------------ ------------ ------------|--------------------------------------------Decoding process:=================------------|||Subbands|------------||||------------|Intra DC||||LL0 subband prediction ------------|\ Dequantization ------------------- \||Reference frames|\ IDWT|------- -------|Motion \|||Frame 0||Frame 1||Compensation . OBMC v -------|------- -------|--------------. \------> Frame n output Frame Frame<----------------------------------/|...|------------------- Range Coder:============Binary Range Coder:------------------- The implemented range coder is an adapted version based upon "Range encoding: an algorithm for removing redundancy from a digitised message." by G. N. N. Martin. The symbols encoded by the Snow range coder are bits(0|1). The associated probabilities are not fix but change depending on the symbol mix seen so far. bit seen|new state ---------+----------------------------------------------- 0|256 - state_transition_table[256 - old_state];1|state_transition_table[old_state];state_transition_table={ 0, 0, 0, 0, 0, 0, 0, 0, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 190, 191, 192, 194, 194, 195, 196, 197, 198, 199, 200, 201, 202, 202, 204, 205, 206, 207, 208, 209, 209, 210, 211, 212, 213, 215, 215, 216, 217, 218, 219, 220, 220, 222, 223, 224, 225, 226, 227, 227, 229, 229, 230, 231, 232, 234, 234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, 247, 248, 248, 0, 0, 0, 0, 0, 0, 0};FIXME Range Coding of integers:------------------------- FIXME Neighboring Blocks:===================left and top are set to the respective blocks unless they are outside of the image in which case they are set to the Null block top-left is set to the top left block unless it is outside of the image in which case it is set to the left block if this block has no larger parent block or it is at the left side of its parent block and the top right block is not outside of the image then the top right block is used for top-right else the top-left block is used Null block y, cb, cr are 128 level, ref, mx and my are 0 Motion Vector Prediction:=========================1. the motion vectors of all the neighboring blocks are scaled to compensate for the difference of reference frames scaled_mv=(mv *(256 *(current_reference+1)/(mv.reference+1))+128)> the median of the scaled left
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
void ff_progress_frame_replace(ProgressFrame *dst, const ProgressFrame *src)
Do nothing if dst and src already refer to the same AVFrame; otherwise unreference dst and if src is ...
static av_always_inline int vp89_rac_get(VPXRangeCoder *c)
main external API structure.
int active_thread_type
Which multithreading methods are in use by the codec.
uint8_t intra4x4_pred_mode_top[4]
static av_always_inline int decode_splitmvs(const VP8Context *s, VPXRangeCoder *c, VP8Macroblock *mb, int layout, int is_vp7)
Split motion vector prediction, 16.4.
av_cold void ff_h264_pred_init(H264PredContext *h, int codec_id, const int bit_depth, int chroma_format_idc)
Set the intra prediction function pointers.
static const FFHWAccel * ffhwaccel(const AVHWAccel *codec)
static int ref[MAX_W *MAX_W]
static int vp7_decode_block_coeffs_internal(VPXRangeCoder *r, int16_t block[16], uint8_t probs[16][3][NUM_DCT_TOKENS - 1], int i, const uint8_t *token_prob, const int16_t qmul[2], const uint8_t scan[16])
static av_always_inline void filter_mb(const VP8Context *s, uint8_t *const dst[3], const VP8FilterStrength *f, int mb_x, int mb_y, int is_vp7)
static void vp78_update_probability_tables(VP8Context *s)
@ AV_PICTURE_TYPE_P
Predicted.
static void vp78_update_pred16x16_pred8x8_mvc_probabilities(VP8Context *s, int mvc_size)
#define avpriv_request_sample(...)
static void update_refs(VP8Context *s)
static int vp7_decode_mv_mb_modes(AVCodecContext *avctx, VP8Frame *cur_frame, const VP8Frame *prev_frame)
static void update_lf_deltas(VP8Context *s)
static av_always_inline void filter_mb_row(AVCodecContext *avctx, void *tdata, int jobnr, int threadnr, int is_vp7)
static const int16_t alpha[]
This structure stores compressed data.
static enum AVPixelFormat get_pixel_format(VP8Context *s)
int ff_vp8_decode_frame(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *avpkt)
#define HWACCEL_VAAPI(codec)
static VP8Frame * vp8_find_free_buffer(VP8Context *s)
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
static const double coeff[2][5]
The exact code depends on how similar the blocks are and how related they are to the block
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static av_always_inline int pthread_cond_init(pthread_cond_t *cond, const pthread_condattr_t *attr)
static const uint16_t vp7_y2ac_qlookup[]
#define atomic_init(obj, value)
static const uint8_t vp7_submv_prob[3]
@ AVDISCARD_NONREF
discard all non reference
static int vp8_rac_get_coeff(VPXRangeCoder *c, const uint8_t *prob)
static const uint8_t vp8_dc_qlookup[VP8_MAX_QUANT+1]
static void copy_chroma(AVFrame *dst, const AVFrame *src, int width, int height)
int(* execute2)(struct AVCodecContext *c, int(*func)(struct AVCodecContext *c2, void *arg, int jobnr, int threadnr), void *arg2, int *ret, int count)
The codec may call this to execute several independent things.
void ff_refstruct_unref(void *objp)
Decrement the reference count of the underlying object and automatically free the object if there are...
static int vp8_alloc_frame(VP8Context *s, VP8Frame *f, int ref)
static const av_always_inline uint8_t * get_submv_prob(uint32_t left, uint32_t top, int is_vp7)
av_cold void ff_vp78dsp_init(VP8DSPContext *dsp)
void * hwaccel_picture_private
RefStruct reference.