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-rw-r--r--libavcodec/vvc/dec.c1052
1 files changed, 1052 insertions, 0 deletions
diff --git a/libavcodec/vvc/dec.c b/libavcodec/vvc/dec.c
new file mode 100644
index 0000000000..eb447604fe
--- /dev/null
+++ b/libavcodec/vvc/dec.c
@@ -0,0 +1,1052 @@
+/*
+ * VVC video decoder
+ *
+ * Copyright (C) 2021 Nuo Mi
+ * Copyright (C) 2022 Xu Mu
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+#include "libavcodec/codec_internal.h"
+#include "libavcodec/decode.h"
+#include "libavcodec/profiles.h"
+#include "libavcodec/refstruct.h"
+#include "libavutil/cpu.h"
+#include "libavutil/mem.h"
+#include "libavutil/thread.h"
+
+#include "dec.h"
+#include "ctu.h"
+#include "data.h"
+#include "refs.h"
+#include "thread.h"
+
+#define TAB_MAX 32
+
+typedef struct Tab {
+ void **tab;
+ size_t size;
+} Tab;
+
+typedef struct TabList {
+ Tab tabs[TAB_MAX];
+ int nb_tabs;
+
+ int zero;
+ int realloc;
+} TabList;
+
+#define TL_ADD(t, s) do { \
+ av_assert0(l->nb_tabs < TAB_MAX); \
+ l->tabs[l->nb_tabs].tab = (void**)&fc->tab.t; \
+ l->tabs[l->nb_tabs].size = sizeof(*fc->tab.t) * (s); \
+ l->nb_tabs++; \
+} while (0)
+
+static void tl_init(TabList *l, const int zero, const int realloc)
+{
+ l->nb_tabs = 0;
+ l->zero = zero;
+ l->realloc = realloc;
+}
+
+static int tl_free(TabList *l)
+{
+ for (int i = 0; i < l->nb_tabs; i++)
+ av_freep(l->tabs[i].tab);
+
+ return 0;
+}
+
+static int tl_create(TabList *l)
+{
+ if (l->realloc) {
+ tl_free(l);
+
+ for (int i = 0; i < l->nb_tabs; i++) {
+ Tab *t = l->tabs + i;
+ *t->tab = l->zero ? av_mallocz(t->size) : av_malloc(t->size);
+ if (!*t->tab)
+ return AVERROR(ENOMEM);
+ }
+ } else if (l->zero) {
+ for (int i = 0; i < l->nb_tabs; i++) {
+ Tab *t = l->tabs + i;
+ memset(*t->tab, 0, t->size);
+ }
+ }
+ return 0;
+}
+
+static void ctu_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCPPS *pps = fc->ps.pps;
+ const int ctu_count = pps ? pps->ctb_count : 0;
+ const int changed = fc->tab.sz.ctu_count != ctu_count;
+
+ tl_init(l, 1, changed);
+
+ TL_ADD(deblock, ctu_count);
+ TL_ADD(sao, ctu_count);
+ TL_ADD(alf, ctu_count);
+ TL_ADD(ctus, ctu_count);
+}
+
+static void ctu_nz_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCSPS *sps = fc->ps.sps;
+ const VVCPPS *pps = fc->ps.pps;
+ const int ctu_size = sps ? (1 << sps->ctb_log2_size_y << sps->ctb_log2_size_y) : 0;
+ const int ctu_count = pps ? pps->ctb_count : 0;
+ const int changed = fc->tab.sz.ctu_count != ctu_count || fc->tab.sz.ctu_size != ctu_size;
+
+ tl_init(l, 0, changed);
+ TL_ADD(slice_idx, ctu_count);
+ TL_ADD(coeffs, ctu_count * ctu_size * VVC_MAX_SAMPLE_ARRAYS);
+}
+
+static void min_cb_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCPPS *pps = fc->ps.pps;
+ const int pic_size_in_min_cb = pps ? pps->min_cb_width * pps->min_cb_height : 0;
+ const int changed = fc->tab.sz.pic_size_in_min_cb != pic_size_in_min_cb;
+
+ tl_init(l, 1, changed);
+
+ TL_ADD(skip, pic_size_in_min_cb);
+ TL_ADD(imf, pic_size_in_min_cb);
+ TL_ADD(imtf, pic_size_in_min_cb);
+ TL_ADD(imm, pic_size_in_min_cb);
+ TL_ADD(ipm, pic_size_in_min_cb);
+
+ for (int i = LUMA; i <= CHROMA; i++) {
+ TL_ADD(cb_pos_x[i], pic_size_in_min_cb);
+ TL_ADD(cb_pos_y[i], pic_size_in_min_cb);
+ TL_ADD(cb_width[i], pic_size_in_min_cb);
+ TL_ADD(cb_height[i], pic_size_in_min_cb);
+ TL_ADD(cqt_depth[i], pic_size_in_min_cb);
+ TL_ADD(cpm[i], pic_size_in_min_cb);
+ TL_ADD(cp_mv[i], pic_size_in_min_cb * MAX_CONTROL_POINTS);
+ };
+}
+
+static void min_pu_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCPPS *pps = fc->ps.pps;
+ const int pic_size_in_min_pu = pps ? pps->min_pu_width * pps->min_pu_height : 0;
+ const int changed = fc->tab.sz.pic_size_in_min_pu != pic_size_in_min_pu;
+
+ tl_init(l, 1, changed);
+
+ TL_ADD(msf, pic_size_in_min_pu);
+ TL_ADD(iaf, pic_size_in_min_pu);
+ TL_ADD(mmi, pic_size_in_min_pu);
+ TL_ADD(mvf, pic_size_in_min_pu);
+}
+
+static void min_tu_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCPPS *pps = fc->ps.pps;
+ const int pic_size_in_min_tu = pps ? pps->min_tu_width * pps->min_tu_height : 0;
+ const int changed = fc->tab.sz.pic_size_in_min_tu != pic_size_in_min_tu;
+
+ tl_init(l, 1, changed);
+
+ TL_ADD(tu_joint_cbcr_residual_flag, pic_size_in_min_tu);
+ for (int i = LUMA; i <= CHROMA; i++) {
+ TL_ADD(tb_pos_x0[i], pic_size_in_min_tu);
+ TL_ADD(tb_pos_y0[i], pic_size_in_min_tu);
+ TL_ADD(tb_width[i], pic_size_in_min_tu);
+ TL_ADD(tb_height[i], pic_size_in_min_tu);
+ TL_ADD(pcmf[i], pic_size_in_min_tu);
+ }
+
+ for (int i = 0; i < VVC_MAX_SAMPLE_ARRAYS; i++) {
+ TL_ADD(tu_coded_flag[i], pic_size_in_min_tu);
+ TL_ADD(qp[i], pic_size_in_min_tu);
+ }
+}
+
+static void bs_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCPPS *pps = fc->ps.pps;
+ const int bs_width = pps ? (pps->width >> 2) + 1 : 0;
+ const int bs_height = pps ? (pps->height >> 2) + 1 : 0;
+ const int bs_count = bs_width * bs_height;
+ const int changed = fc->tab.sz.bs_width != bs_width ||
+ fc->tab.sz.bs_height != bs_height;
+
+ tl_init(l, 1, changed);
+
+ for (int i = 0; i < VVC_MAX_SAMPLE_ARRAYS; i++) {
+ TL_ADD(horizontal_bs[i], bs_count);
+ TL_ADD(vertical_bs[i], bs_count);
+ }
+ TL_ADD(horizontal_q, bs_count);
+ TL_ADD(horizontal_p, bs_count);
+ TL_ADD(vertical_p, bs_count);
+ TL_ADD(vertical_q, bs_count);
+}
+
+static void pixel_buffer_nz_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCSPS *sps = fc->ps.sps;
+ const VVCPPS *pps = fc->ps.pps;
+ const int width = pps ? pps->width : 0;
+ const int height = pps ? pps->height : 0;
+ const int ctu_width = pps ? pps->ctb_width : 0;
+ const int ctu_height = pps ? pps->ctb_height : 0;
+ const int chroma_idc = sps ? sps->r->sps_chroma_format_idc : 0;
+ const int ps = sps ? sps->pixel_shift : 0;
+ const int c_end = chroma_idc ? VVC_MAX_SAMPLE_ARRAYS : 1;
+ const int changed = fc->tab.sz.chroma_format_idc != chroma_idc ||
+ fc->tab.sz.width != width || fc->tab.sz.height != height ||
+ fc->tab.sz.ctu_width != ctu_width || fc->tab.sz.ctu_height != ctu_height;
+
+ tl_init(l, 0, changed);
+
+ for (int c_idx = 0; c_idx < c_end; c_idx++) {
+ const int w = width >> (sps ? sps->hshift[c_idx] : 0);
+ const int h = height >> (sps ? sps->vshift[c_idx] : 0);
+ TL_ADD(sao_pixel_buffer_h[c_idx], (w * 2 * ctu_height) << ps);
+ TL_ADD(sao_pixel_buffer_v[c_idx], (h * 2 * ctu_width) << ps);
+ }
+
+ for (int c_idx = 0; c_idx < c_end; c_idx++) {
+ const int w = width >> (sps ? sps->hshift[c_idx] : 0);
+ const int h = height >> (sps ? sps->vshift[c_idx] : 0);
+ const int border_pixels = c_idx ? ALF_BORDER_CHROMA : ALF_BORDER_LUMA;
+ for (int i = 0; i < 2; i++) {
+ TL_ADD(alf_pixel_buffer_h[c_idx][i], (w * border_pixels * ctu_height) << ps);
+ TL_ADD(alf_pixel_buffer_v[c_idx][i], h * ALF_PADDING_SIZE * ctu_width);
+ }
+ }
+}
+
+static void msm_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCPPS *pps = fc->ps.pps;
+ const int w32 = pps ? AV_CEIL_RSHIFT(pps->width, 5) : 0;
+ const int h32 = pps ? AV_CEIL_RSHIFT(pps->height, 5) : 0;
+ const int changed = AV_CEIL_RSHIFT(fc->tab.sz.width, 5) != w32 ||
+ AV_CEIL_RSHIFT(fc->tab.sz.height, 5) != h32;
+
+ tl_init(l, 1, changed);
+
+ for (int i = LUMA; i <= CHROMA; i++)
+ TL_ADD(msm[i], w32 * h32);
+}
+
+static void ispmf_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCPPS *pps = fc->ps.pps;
+ const int w64 = pps ? AV_CEIL_RSHIFT(pps->width, 6) : 0;
+ const int h64 = pps ? AV_CEIL_RSHIFT(pps->height, 6) : 0;
+ const int changed = AV_CEIL_RSHIFT(fc->tab.sz.width, 6) != w64 ||
+ AV_CEIL_RSHIFT(fc->tab.sz.height, 6) != h64;
+
+ tl_init(l, 1, changed);
+
+ TL_ADD(ispmf, w64 * h64);
+}
+
+static void ibc_tl_init(TabList *l, VVCFrameContext *fc)
+{
+ const VVCSPS *sps = fc->ps.sps;
+ const VVCPPS *pps = fc->ps.pps;
+ const int ctu_height = pps ? pps->ctb_height : 0;
+ const int ctu_size = sps ? sps->ctb_size_y : 0;
+ const int ps = sps ? sps->pixel_shift : 0;
+ const int chroma_idc = sps ? sps->r->sps_chroma_format_idc : 0;
+ const int has_ibc = sps ? sps->r->sps_ibc_enabled_flag : 0;
+ const int changed = fc->tab.sz.chroma_format_idc != chroma_idc ||
+ fc->tab.sz.ctu_height != ctu_height ||
+ fc->tab.sz.ctu_size != ctu_size ||
+ fc->tab.sz.pixel_shift != ps;
+
+ fc->tab.sz.ibc_buffer_width = ctu_size ? 2 * MAX_CTU_SIZE * MAX_CTU_SIZE / ctu_size : 0;
+
+ tl_init(l, has_ibc, changed);
+
+ for (int i = LUMA; i < VVC_MAX_SAMPLE_ARRAYS; i++) {
+ const int hs = sps ? sps->hshift[i] : 0;
+ const int vs = sps ? sps->vshift[i] : 0;
+ TL_ADD(ibc_vir_buf[i], fc->tab.sz.ibc_buffer_width * ctu_size * ctu_height << ps >> hs >> vs);
+ }
+}
+
+typedef void (*tl_init_fn)(TabList *l, VVCFrameContext *fc);
+
+static int frame_context_for_each_tl(VVCFrameContext *fc, int (*unary_fn)(TabList *l))
+{
+ const tl_init_fn init[] = {
+ ctu_tl_init,
+ ctu_nz_tl_init,
+ min_cb_tl_init,
+ min_pu_tl_init,
+ min_tu_tl_init,
+ bs_tl_init,
+ pixel_buffer_nz_tl_init,
+ msm_tl_init,
+ ispmf_tl_init,
+ ibc_tl_init,
+ };
+
+ for (int i = 0; i < FF_ARRAY_ELEMS(init); i++) {
+ TabList l;
+ int ret;
+
+ init[i](&l, fc);
+ ret = unary_fn(&l);
+ if (ret < 0)
+ return ret;
+ }
+ return 0;
+}
+
+static void free_cus(VVCFrameContext *fc)
+{
+ if (fc->tab.ctus) {
+ for (int i = 0; i < fc->tab.sz.ctu_count; i++)
+ ff_vvc_ctu_free_cus(fc->tab.ctus + i);
+ }
+}
+
+static void pic_arrays_free(VVCFrameContext *fc)
+{
+ free_cus(fc);
+ frame_context_for_each_tl(fc, tl_free);
+ ff_refstruct_pool_uninit(&fc->rpl_tab_pool);
+ ff_refstruct_pool_uninit(&fc->tab_dmvr_mvf_pool);
+
+ memset(&fc->tab.sz, 0, sizeof(fc->tab.sz));
+}
+
+static int pic_arrays_init(VVCContext *s, VVCFrameContext *fc)
+{
+ const VVCSPS *sps = fc->ps.sps;
+ const VVCPPS *pps = fc->ps.pps;
+ const int ctu_count = pps->ctb_count;
+ const int pic_size_in_min_pu = pps->min_pu_width * pps->min_pu_height;
+ int ret;
+
+ free_cus(fc);
+
+ ret = frame_context_for_each_tl(fc, tl_create);
+ if (ret < 0)
+ return ret;
+
+ memset(fc->tab.slice_idx, -1, sizeof(*fc->tab.slice_idx) * ctu_count);
+
+ if (fc->tab.sz.ctu_count != ctu_count) {
+ ff_refstruct_pool_uninit(&fc->rpl_tab_pool);
+ fc->rpl_tab_pool = ff_refstruct_pool_alloc(ctu_count * sizeof(RefPicListTab), 0);
+ if (!fc->rpl_tab_pool)
+ return AVERROR(ENOMEM);
+ }
+
+ if (fc->tab.sz.pic_size_in_min_pu != pic_size_in_min_pu) {
+ ff_refstruct_pool_uninit(&fc->tab_dmvr_mvf_pool);
+ fc->tab_dmvr_mvf_pool = ff_refstruct_pool_alloc(
+ pic_size_in_min_pu * sizeof(MvField), FF_REFSTRUCT_POOL_FLAG_ZERO_EVERY_TIME);
+ if (!fc->tab_dmvr_mvf_pool)
+ return AVERROR(ENOMEM);
+ }
+
+ fc->tab.sz.ctu_count = pps->ctb_count;
+ fc->tab.sz.ctu_size = 1 << sps->ctb_log2_size_y << sps->ctb_log2_size_y;
+ fc->tab.sz.pic_size_in_min_cb = pps->min_cb_width * pps->min_cb_height;
+ fc->tab.sz.pic_size_in_min_pu = pic_size_in_min_pu;
+ fc->tab.sz.pic_size_in_min_tu = pps->min_tu_width * pps->min_tu_height;
+ fc->tab.sz.width = pps->width;
+ fc->tab.sz.height = pps->height;
+ fc->tab.sz.ctu_width = pps->ctb_width;
+ fc->tab.sz.ctu_height = pps->ctb_height;
+ fc->tab.sz.chroma_format_idc = sps->r->sps_chroma_format_idc;
+ fc->tab.sz.pixel_shift = sps->pixel_shift;
+ fc->tab.sz.bs_width = (fc->ps.pps->width >> 2) + 1;
+ fc->tab.sz.bs_height = (fc->ps.pps->height >> 2) + 1;
+
+ return 0;
+}
+
+static int min_positive(const int idx, const int diff, const int min_diff)
+{
+ return diff > 0 && (idx < 0 || diff < min_diff);
+}
+
+static int max_negtive(const int idx, const int diff, const int max_diff)
+{
+ return diff < 0 && (idx < 0 || diff > max_diff);
+}
+
+typedef int (*smvd_find_fxn)(const int idx, const int diff, const int old_diff);
+
+static int8_t smvd_find(const VVCFrameContext *fc, const SliceContext *sc, int lx, smvd_find_fxn find)
+{
+ const H266RawSliceHeader *rsh = sc->sh.r;
+ const RefPicList *rpl = sc->rpl + lx;
+ const int poc = fc->ref->poc;
+ int8_t idx = -1;
+ int old_diff = -1;
+ for (int i = 0; i < rsh->num_ref_idx_active[lx]; i++) {
+ if (!rpl->isLongTerm[i]) {
+ int diff = poc - rpl->list[i];
+ if (find(idx, diff, old_diff)) {
+ idx = i;
+ old_diff = diff;
+ }
+ }
+ }
+ return idx;
+}
+
+static void smvd_ref_idx(const VVCFrameContext *fc, SliceContext *sc)
+{
+ VVCSH *sh = &sc->sh;
+ if (IS_B(sh->r)) {
+ sh->ref_idx_sym[0] = smvd_find(fc, sc, 0, min_positive);
+ sh->ref_idx_sym[1] = smvd_find(fc, sc, 1, max_negtive);
+ if (sh->ref_idx_sym[0] == -1 || sh->ref_idx_sym[1] == -1) {
+ sh->ref_idx_sym[0] = smvd_find(fc, sc, 0, max_negtive);
+ sh->ref_idx_sym[1] = smvd_find(fc, sc, 1, min_positive);
+ }
+ }
+}
+
+static void eps_free(SliceContext *slice)
+{
+ av_freep(&slice->eps);
+ slice->nb_eps = 0;
+}
+
+static void slices_free(VVCFrameContext *fc)
+{
+ if (fc->slices) {
+ for (int i = 0; i < fc->nb_slices_allocated; i++) {
+ SliceContext *slice = fc->slices[i];
+ if (slice) {
+ ff_refstruct_unref(&slice->ref);
+ ff_refstruct_unref(&slice->sh.r);
+ eps_free(slice);
+ av_free(slice);
+ }
+ }
+ av_freep(&fc->slices);
+ }
+ fc->nb_slices_allocated = 0;
+ fc->nb_slices = 0;
+}
+
+static int slices_realloc(VVCFrameContext *fc)
+{
+ void *p;
+ const int size = (fc->nb_slices_allocated + 1) * 3 / 2;
+
+ if (fc->nb_slices < fc->nb_slices_allocated)
+ return 0;
+
+ p = av_realloc_array(fc->slices, size, sizeof(*fc->slices));
+ if (!p)
+ return AVERROR(ENOMEM);
+
+ fc->slices = p;
+ for (int i = fc->nb_slices_allocated; i < size; i++) {
+ fc->slices[i] = av_mallocz(sizeof(*fc->slices[0]));
+ if (!fc->slices[i]) {
+ fc->nb_slices_allocated = i;
+ return AVERROR(ENOMEM);
+ }
+ fc->slices[i]->slice_idx = i;
+ }
+ fc->nb_slices_allocated = size;
+
+ return 0;
+}
+
+static void ep_init_cabac_decoder(SliceContext *sc, const int index,
+ const H2645NAL *nal, GetBitContext *gb, const CodedBitstreamUnit *unit)
+{
+ const H266RawSlice *slice = unit->content_ref;
+ const H266RawSliceHeader *rsh = sc->sh.r;
+ EntryPoint *ep = sc->eps + index;
+ int size;
+
+ if (index < rsh->num_entry_points) {
+ int skipped = 0;
+ int64_t start = (gb->index >> 3);
+ int64_t end = start + rsh->sh_entry_point_offset_minus1[index] + 1;
+ while (skipped < nal->skipped_bytes && nal->skipped_bytes_pos[skipped] <= start + slice->header_size) {
+ skipped++;
+ }
+ while (skipped < nal->skipped_bytes && nal->skipped_bytes_pos[skipped] <= end + slice->header_size) {
+ end--;
+ skipped++;
+ }
+ size = end - start;
+ } else {
+ size = get_bits_left(gb) / 8;
+ }
+ ff_init_cabac_decoder (&ep->cc, gb->buffer + get_bits_count(gb) / 8, size);
+ skip_bits(gb, size * 8);
+}
+
+static int slice_init_entry_points(SliceContext *sc,
+ VVCFrameContext *fc, const H2645NAL *nal, const CodedBitstreamUnit *unit)
+{
+ const VVCSH *sh = &sc->sh;
+ const H266RawSlice *slice = unit->content_ref;
+ int nb_eps = sh->r->num_entry_points + 1;
+ int ctu_addr = 0;
+ GetBitContext gb;
+
+ if (sc->nb_eps != nb_eps) {
+ eps_free(sc);
+ sc->eps = av_calloc(nb_eps, sizeof(*sc->eps));
+ if (!sc->eps)
+ return AVERROR(ENOMEM);
+ sc->nb_eps = nb_eps;
+ }
+
+ init_get_bits8(&gb, slice->data, slice->data_size);
+ for (int i = 0; i < sc->nb_eps; i++)
+ {
+ EntryPoint *ep = sc->eps + i;
+
+ ep->ctu_start = ctu_addr;
+ ep->ctu_end = (i + 1 == sc->nb_eps ? sh->num_ctus_in_curr_slice : sh->entry_point_start_ctu[i]);
+
+ for (int j = ep->ctu_start; j < ep->ctu_end; j++) {
+ const int rs = sc->sh.ctb_addr_in_curr_slice[j];
+ fc->tab.slice_idx[rs] = sc->slice_idx;
+ }
+
+ ep_init_cabac_decoder(sc, i, nal, &gb, unit);
+
+ if (i + 1 < sc->nb_eps)
+ ctu_addr = sh->entry_point_start_ctu[i];
+ }
+
+ return 0;
+}
+
+static VVCFrameContext* get_frame_context(const VVCContext *s, const VVCFrameContext *fc, const int delta)
+{
+ const int size = s->nb_fcs;
+ const int idx = (fc - s->fcs + delta + size) % size;
+ return s->fcs + idx;
+}
+
+static int ref_frame(VVCFrame *dst, const VVCFrame *src)
+{
+ int ret;
+
+ ret = av_frame_ref(dst->frame, src->frame);
+ if (ret < 0)
+ return ret;
+
+ ff_refstruct_replace(&dst->progress, src->progress);
+
+ ff_refstruct_replace(&dst->tab_dmvr_mvf, src->tab_dmvr_mvf);
+
+ ff_refstruct_replace(&dst->rpl_tab, src->rpl_tab);
+ ff_refstruct_replace(&dst->rpl, src->rpl);
+ dst->nb_rpl_elems = src->nb_rpl_elems;
+
+ dst->poc = src->poc;
+ dst->ctb_count = src->ctb_count;
+ dst->flags = src->flags;
+ dst->sequence = src->sequence;
+
+ return 0;
+}
+
+static av_cold void frame_context_free(VVCFrameContext *fc)
+{
+ slices_free(fc);
+
+ ff_refstruct_pool_uninit(&fc->tu_pool);
+ ff_refstruct_pool_uninit(&fc->cu_pool);
+
+ for (int i = 0; i < FF_ARRAY_ELEMS(fc->DPB); i++) {
+ ff_vvc_unref_frame(fc, &fc->DPB[i], ~0);
+ av_frame_free(&fc->DPB[i].frame);
+ }
+
+ ff_vvc_frame_thread_free(fc);
+ pic_arrays_free(fc);
+ av_frame_free(&fc->output_frame);
+ ff_vvc_frame_ps_free(&fc->ps);
+}
+
+static av_cold int frame_context_init(VVCFrameContext *fc, AVCodecContext *avctx)
+{
+
+ fc->log_ctx = avctx;
+
+ fc->output_frame = av_frame_alloc();
+ if (!fc->output_frame)
+ return AVERROR(ENOMEM);
+
+ for (int j = 0; j < FF_ARRAY_ELEMS(fc->DPB); j++) {
+ fc->DPB[j].frame = av_frame_alloc();
+ if (!fc->DPB[j].frame)
+ return AVERROR(ENOMEM);
+ }
+ fc->cu_pool = ff_refstruct_pool_alloc(sizeof(CodingUnit), 0);
+ if (!fc->cu_pool)
+ return AVERROR(ENOMEM);
+
+ fc->tu_pool = ff_refstruct_pool_alloc(sizeof(TransformUnit), 0);
+ if (!fc->tu_pool)
+ return AVERROR(ENOMEM);
+
+ return 0;
+}
+
+static int frame_context_setup(VVCFrameContext *fc, VVCContext *s)
+{
+ int ret;
+
+ fc->ref = NULL;
+
+ // copy refs from the last frame
+ if (s->nb_frames && s->nb_fcs > 1) {
+ VVCFrameContext *prev = get_frame_context(s, fc, -1);
+ for (int i = 0; i < FF_ARRAY_ELEMS(fc->DPB); i++) {
+ ff_vvc_unref_frame(fc, &fc->DPB[i], ~0);
+ if (prev->DPB[i].frame->buf[0]) {
+ ret = ref_frame(&fc->DPB[i], &prev->DPB[i]);
+ if (ret < 0)
+ return ret;
+ }
+ }
+ }
+
+ if (IS_IDR(s)) {
+ s->seq_decode = (s->seq_decode + 1) & 0xff;
+ ff_vvc_clear_refs(fc);
+ }
+
+ ret = pic_arrays_init(s, fc);
+ if (ret < 0)
+ return ret;
+ ff_vvc_dsp_init(&fc->vvcdsp, fc->ps.sps->bit_depth);
+ ff_videodsp_init(&fc->vdsp, fc->ps.sps->bit_depth);
+ return 0;
+}
+
+static int frame_start(VVCContext *s, VVCFrameContext *fc, SliceContext *sc)
+{
+ const VVCPH *ph = &fc->ps.ph;
+ const H266RawSliceHeader *rsh = sc->sh.r;
+ int ret;
+
+ // 8.3.1 Decoding process for picture order count
+ if (!s->temporal_id && !ph->r->ph_non_ref_pic_flag && !(IS_RASL(s) || IS_RADL(s)))
+ s->poc_tid0 = ph->poc;
+
+ if ((ret = ff_vvc_set_new_ref(s, fc, &fc->frame)) < 0)
+ goto fail;
+
+ if (!IS_IDR(s))
+ ff_vvc_bump_frame(s, fc);
+
+ av_frame_unref(fc->output_frame);
+
+ if ((ret = ff_vvc_output_frame(s, fc, fc->output_frame,rsh->sh_no_output_of_prior_pics_flag, 0)) < 0)
+ goto fail;
+
+ if ((ret = ff_vvc_frame_rpl(s, fc, sc)) < 0)
+ goto fail;
+
+ if ((ret = ff_vvc_frame_thread_init(fc)) < 0)
+ goto fail;
+ return 0;
+fail:
+ if (fc->ref)
+ ff_vvc_unref_frame(fc, fc->ref, ~0);
+ fc->ref = NULL;
+ return ret;
+}
+
+static int slice_start(SliceContext *sc, VVCContext *s, VVCFrameContext *fc,
+ const CodedBitstreamUnit *unit, const int is_first_slice)
+{
+ VVCSH *sh = &sc->sh;
+ int ret;
+
+ ret = ff_vvc_decode_sh(sh, &fc->ps, unit);
+ if (ret < 0)
+ return ret;
+
+ ff_refstruct_replace(&sc->ref, unit->content_ref);
+
+ if (is_first_slice) {
+ ret = frame_start(s, fc, sc);
+ if (ret < 0)
+ return ret;
+ } else if (fc->ref) {
+ if (!IS_I(sh->r)) {
+ ret = ff_vvc_slice_rpl(s, fc, sc);
+ if (ret < 0) {
+ av_log(fc->log_ctx, AV_LOG_WARNING,
+ "Error constructing the reference lists for the current slice.\n");
+ return ret;
+ }
+ }
+ } else {
+ av_log(fc->log_ctx, AV_LOG_ERROR, "First slice in a frame missing.\n");
+ return ret;
+ }
+
+ if (!IS_I(sh->r))
+ smvd_ref_idx(fc, sc);
+
+ return 0;
+}
+
+static void export_frame_params(VVCContext *s, const VVCFrameContext *fc)
+{
+ AVCodecContext *c = s->avctx;
+ const VVCSPS *sps = fc->ps.sps;
+ const VVCPPS *pps = fc->ps.pps;
+
+ c->pix_fmt = sps->pix_fmt;
+ c->coded_width = pps->width;
+ c->coded_height = pps->height;
+ c->width = pps->width - ((pps->r->pps_conf_win_left_offset + pps->r->pps_conf_win_right_offset) << sps->hshift[CHROMA]);
+ c->height = pps->height - ((pps->r->pps_conf_win_top_offset + pps->r->pps_conf_win_bottom_offset) << sps->vshift[CHROMA]);
+}
+
+static int frame_setup(VVCFrameContext *fc, VVCContext *s)
+{
+ int ret = ff_vvc_decode_frame_ps(&fc->ps, s);
+ if (ret < 0)
+ return ret;
+
+ ret = frame_context_setup(fc, s);
+ if (ret < 0)
+ return ret;
+
+ export_frame_params(s, fc);
+ return ret;
+}
+
+static int decode_slice(VVCContext *s, VVCFrameContext *fc, const H2645NAL *nal, const CodedBitstreamUnit *unit)
+{
+ int ret;
+ SliceContext *sc;
+ const int is_first_slice = !fc->nb_slices;
+
+ ret = slices_realloc(fc);
+ if (ret < 0)
+ return ret;
+
+ sc = fc->slices[fc->nb_slices];
+
+ s->vcl_unit_type = nal->type;
+ if (is_first_slice) {
+ ret = frame_setup(fc, s);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = slice_start(sc, s, fc, unit, is_first_slice);
+ if (ret < 0)
+ return ret;
+
+ ret = slice_init_entry_points(sc, fc, nal, unit);
+ if (ret < 0)
+ return ret;
+ fc->nb_slices++;
+
+ return 0;
+}
+
+static int decode_nal_unit(VVCContext *s, VVCFrameContext *fc, const H2645NAL *nal, const CodedBitstreamUnit *unit)
+{
+ int ret;
+
+ s->temporal_id = nal->temporal_id;
+
+ switch (unit->type) {
+ case VVC_VPS_NUT:
+ case VVC_SPS_NUT:
+ case VVC_PPS_NUT:
+ /* vps, sps, sps cached by s->cbc */
+ break;
+ case VVC_TRAIL_NUT:
+ case VVC_STSA_NUT:
+ case VVC_RADL_NUT:
+ case VVC_RASL_NUT:
+ case VVC_IDR_W_RADL:
+ case VVC_IDR_N_LP:
+ case VVC_CRA_NUT:
+ case VVC_GDR_NUT:
+ ret = decode_slice(s, fc, nal, unit);
+ if (ret < 0)
+ return ret;
+ break;
+ case VVC_PREFIX_APS_NUT:
+ case VVC_SUFFIX_APS_NUT:
+ ret = ff_vvc_decode_aps(&s->ps, unit);
+ if (ret < 0)
+ return ret;
+ break;
+ }
+
+ return 0;
+}
+
+static int decode_nal_units(VVCContext *s, VVCFrameContext *fc, AVPacket *avpkt)
+{
+ const CodedBitstreamH266Context *h266 = s->cbc->priv_data;
+ CodedBitstreamFragment *frame = &s->current_frame;
+ int ret = 0;
+ int eos_at_start = 1;
+ s->last_eos = s->eos;
+ s->eos = 0;
+
+ ff_cbs_fragment_reset(frame);
+ ret = ff_cbs_read_packet(s->cbc, frame, avpkt);
+ if (ret < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "Failed to read packet.\n");
+ return ret;
+ }
+ /* decode the NAL units */
+ for (int i = 0; i < frame->nb_units; i++) {
+ const H2645NAL *nal = h266->common.read_packet.nals + i;
+ const CodedBitstreamUnit *unit = frame->units + i;
+
+ if (unit->type == VVC_EOB_NUT || unit->type == VVC_EOS_NUT) {
+ if (eos_at_start)
+ s->last_eos = 1;
+ else
+ s->eos = 1;
+ } else {
+ ret = decode_nal_unit(s, fc, nal, unit);
+ if (ret < 0) {
+ av_log(s->avctx, AV_LOG_WARNING,
+ "Error parsing NAL unit #%d.\n", i);
+ goto fail;
+ }
+ }
+ }
+ return 0;
+
+fail:
+ if (fc->ref)
+ ff_vvc_report_frame_finished(fc->ref);
+ return ret;
+}
+
+static int set_output_format(const VVCContext *s, const AVFrame *output)
+{
+ AVCodecContext *c = s->avctx;
+ int ret;
+
+ if (output->width != c->width || output->height != c->height) {
+ if ((ret = ff_set_dimensions(c, output->width, output->height)) < 0)
+ return ret;
+ }
+ c->pix_fmt = output->format;
+ return 0;
+}
+
+static int wait_delayed_frame(VVCContext *s, AVFrame *output, int *got_output)
+{
+ VVCFrameContext *delayed = get_frame_context(s, s->fcs, s->nb_frames - s->nb_delayed);
+ int ret = ff_vvc_frame_wait(s, delayed);
+
+ if (!ret && delayed->output_frame->buf[0] && output) {
+ av_frame_move_ref(output, delayed->output_frame);
+ ret = set_output_format(s, output);
+ if (!ret)
+ *got_output = 1;
+ }
+ s->nb_delayed--;
+
+ return ret;
+}
+
+static int submit_frame(VVCContext *s, VVCFrameContext *fc, AVFrame *output, int *got_output)
+{
+ int ret;
+ s->nb_frames++;
+ s->nb_delayed++;
+ ff_vvc_frame_submit(s, fc);
+ if (s->nb_delayed >= s->nb_fcs) {
+ if ((ret = wait_delayed_frame(s, output, got_output)) < 0)
+ return ret;
+ }
+ return 0;
+}
+
+static int get_decoded_frame(VVCContext *s, AVFrame *output, int *got_output)
+{
+ int ret;
+ while (s->nb_delayed) {
+ if ((ret = wait_delayed_frame(s, output, got_output)) < 0)
+ return ret;
+ if (*got_output)
+ return 0;
+ }
+ if (s->nb_frames) {
+ //we still have frames cached in dpb.
+ VVCFrameContext *last = get_frame_context(s, s->fcs, s->nb_frames - 1);
+
+ ret = ff_vvc_output_frame(s, last, output, 0, 1);
+ if (ret < 0)
+ return ret;
+ if (ret) {
+ *got_output = ret;
+ if ((ret = set_output_format(s, output)) < 0)
+ return ret;
+ }
+ }
+ return 0;
+}
+
+static int vvc_decode_frame(AVCodecContext *avctx, AVFrame *output,
+ int *got_output, AVPacket *avpkt)
+{
+ VVCContext *s = avctx->priv_data;
+ VVCFrameContext *fc;
+ int ret;
+
+ if (!avpkt->size)
+ return get_decoded_frame(s, output, got_output);
+
+ fc = get_frame_context(s, s->fcs, s->nb_frames);
+
+ fc->nb_slices = 0;
+ fc->decode_order = s->nb_frames;
+
+ ret = decode_nal_units(s, fc, avpkt);
+ if (ret < 0)
+ return ret;
+
+ if (!fc->ft)
+ return avpkt->size;
+
+ ret = submit_frame(s, fc, output, got_output);
+ if (ret < 0)
+ return ret;
+
+ return avpkt->size;
+}
+
+static av_cold void vvc_decode_flush(AVCodecContext *avctx)
+{
+ VVCContext *s = avctx->priv_data;
+ int got_output = 0;
+
+ while (s->nb_delayed)
+ wait_delayed_frame(s, NULL, &got_output);
+
+ if (s->fcs) {
+ VVCFrameContext *last = get_frame_context(s, s->fcs, s->nb_frames - 1);
+ ff_vvc_flush_dpb(last);
+ }
+
+ s->eos = 1;
+}
+
+static av_cold int vvc_decode_free(AVCodecContext *avctx)
+{
+ VVCContext *s = avctx->priv_data;
+
+ ff_cbs_fragment_free(&s->current_frame);
+ vvc_decode_flush(avctx);
+ ff_vvc_executor_free(&s->executor);
+ if (s->fcs) {
+ for (int i = 0; i < s->nb_fcs; i++)
+ frame_context_free(s->fcs + i);
+ av_free(s->fcs);
+ }
+ ff_vvc_ps_uninit(&s->ps);
+ ff_cbs_close(&s->cbc);
+
+ return 0;
+}
+
+static av_cold void init_default_scale_m(void)
+{
+ memset(&ff_vvc_default_scale_m, 16, sizeof(ff_vvc_default_scale_m));
+}
+
+#define VVC_MAX_DELAYED_FRAMES 16
+static av_cold int vvc_decode_init(AVCodecContext *avctx)
+{
+ VVCContext *s = avctx->priv_data;
+ static AVOnce init_static_once = AV_ONCE_INIT;
+ const int cpu_count = av_cpu_count();
+ const int delayed = FFMIN(cpu_count, VVC_MAX_DELAYED_FRAMES);
+ const int thread_count = avctx->thread_count ? avctx->thread_count : delayed;
+ int ret;
+
+ s->avctx = avctx;
+
+ ret = ff_cbs_init(&s->cbc, AV_CODEC_ID_VVC, avctx);
+ if (ret)
+ return ret;
+
+ if (avctx->extradata_size > 0 && avctx->extradata) {
+ ret = ff_cbs_read_extradata_from_codec(s->cbc, &s->current_frame, avctx);
+ if (ret < 0)
+ return ret;
+ }
+
+ s->nb_fcs = (avctx->flags & AV_CODEC_FLAG_LOW_DELAY) ? 1 : delayed;
+ s->fcs = av_calloc(s->nb_fcs, sizeof(*s->fcs));
+ if (!s->fcs)
+ return AVERROR(ENOMEM);
+
+ for (int i = 0; i < s->nb_fcs; i++) {
+ VVCFrameContext *fc = s->fcs + i;
+ ret = frame_context_init(fc, avctx);
+ if (ret < 0)
+ return ret;
+ }
+
+ s->executor = ff_vvc_executor_alloc(s, thread_count);
+ if (!s->executor)
+ return AVERROR(ENOMEM);
+
+ s->eos = 1;
+ GDR_SET_RECOVERED(s);
+ ff_thread_once(&init_static_once, init_default_scale_m);
+
+ return 0;
+}
+
+const FFCodec ff_vvc_decoder = {
+ .p.name = "vvc",
+ .p.long_name = NULL_IF_CONFIG_SMALL("VVC (Versatile Video Coding)"),
+ .p.type = AVMEDIA_TYPE_VIDEO,
+ .p.id = AV_CODEC_ID_VVC,
+ .priv_data_size = sizeof(VVCContext),
+ .init = vvc_decode_init,
+ .close = vvc_decode_free,
+ FF_CODEC_DECODE_CB(vvc_decode_frame),
+ .flush = vvc_decode_flush,
+ .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY | AV_CODEC_CAP_OTHER_THREADS |
+ AV_CODEC_CAP_EXPERIMENTAL,
+ .caps_internal = FF_CODEC_CAP_EXPORTS_CROPPING | FF_CODEC_CAP_INIT_CLEANUP |
+ FF_CODEC_CAP_AUTO_THREADS,
+ .p.profiles = NULL_IF_CONFIG_SMALL(ff_vvc_profiles),
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-11 03:17:25 +0000