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FFmpeg/libavcodec/nvdec_av1.c
Andreas Rheinhardt 02220b88fc avcodec/thread: Don't use ThreadFrame when unnecessary 
The majority of frame-threaded decoders (mainly the intra-only)
need exactly one part of ThreadFrame: The AVFrame. They don't
need the owners nor the progress, yet they had to use it because
ff_thread_(get|release)_buffer() requires it.

This commit changes this and makes these functions work with ordinary
AVFrames; the decoders that need the extra fields for progress
use ff_thread_(get|release)_ext_buffer() which work exactly
as ff_thread_(get|release)_buffer() used to do.

This also avoids some unnecessary allocations of progress AVBuffers,
namely for H.264 and HEVC film grain frames: These frames are not
used for synchronization and therefore don't need a ThreadFrame.

Also move the ThreadFrame structure as well as ff_thread_ref_frame()
to threadframe.h, the header for frame-threaded decoders with
inter-frame dependencies.

Reviewed-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-02-09 17:22:35 +01:00

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/*
* AV1 HW decode acceleration through NVDEC
*
* Copyright (c) 2020 Timo Rothenpieler
*
* 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 "avcodec.h"
#include "nvdec.h"
#include "decode.h"
#include "internal.h"
#include "av1dec.h"
static int get_bit_depth_from_seq(const AV1RawSequenceHeader *seq)
{
if (seq->seq_profile == 2 && seq->color_config.high_bitdepth)
return seq->color_config.twelve_bit ? 12 : 10;
else if (seq->seq_profile <= 2 && seq->color_config.high_bitdepth)
return 10;
else
return 8;
}
static int nvdec_av1_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
const AV1DecContext *s = avctx->priv_data;
const AV1RawSequenceHeader *seq = s->raw_seq;
const AV1RawFrameHeader *frame_header = s->raw_frame_header;
const AV1RawFilmGrainParams *film_grain = &s->cur_frame.film_grain;
NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
CUVIDPICPARAMS *pp = &ctx->pic_params;
CUVIDAV1PICPARAMS *ppc = &pp->CodecSpecific.av1;
FrameDecodeData *fdd;
NVDECFrame *cf;
AVFrame *cur_frame = s->cur_frame.f;
unsigned char remap_lr_type[4] = { AV1_RESTORE_NONE, AV1_RESTORE_SWITCHABLE, AV1_RESTORE_WIENER, AV1_RESTORE_SGRPROJ };
int apply_grain = !(avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN) && film_grain->apply_grain;
int ret, i, j;
ret = ff_nvdec_start_frame_sep_ref(avctx, cur_frame, apply_grain);
if (ret < 0)
return ret;
fdd = (FrameDecodeData*)cur_frame->private_ref->data;
cf = (NVDECFrame*)fdd->hwaccel_priv;
*pp = (CUVIDPICPARAMS) {
.PicWidthInMbs = (cur_frame->width + 15) / 16,
.FrameHeightInMbs = (cur_frame->height + 15) / 16,
.CurrPicIdx = cf->idx,
.ref_pic_flag = !!frame_header->refresh_frame_flags,
.intra_pic_flag = frame_header->frame_type == AV1_FRAME_INTRA_ONLY ||
frame_header->frame_type == AV1_FRAME_KEY,
.CodecSpecific.av1 = {
.width = cur_frame->width,
.height = cur_frame->height,
.frame_offset = frame_header->order_hint,
.decodePicIdx = cf->ref_idx,
/* Sequence Header */
.profile = seq->seq_profile,
.use_128x128_superblock = seq->use_128x128_superblock,
.subsampling_x = seq->color_config.subsampling_x,
.subsampling_y = seq->color_config.subsampling_y,
.mono_chrome = seq->color_config.mono_chrome,
.bit_depth_minus8 = get_bit_depth_from_seq(seq) - 8,
.enable_filter_intra = seq->enable_filter_intra,
.enable_intra_edge_filter = seq->enable_intra_edge_filter,
.enable_interintra_compound = seq->enable_interintra_compound,
.enable_masked_compound = seq->enable_masked_compound,
.enable_dual_filter = seq->enable_dual_filter,
.enable_order_hint = seq->enable_order_hint,
.order_hint_bits_minus1 = seq->order_hint_bits_minus_1,
.enable_jnt_comp = seq->enable_jnt_comp,
.enable_superres = seq->enable_superres,
.enable_cdef = seq->enable_cdef,
.enable_restoration = seq->enable_restoration,
.enable_fgs = seq->film_grain_params_present &&
!(avctx->export_side_data & AV_CODEC_EXPORT_DATA_FILM_GRAIN),
/* Frame Header */
.frame_type = frame_header->frame_type,
.show_frame = frame_header->show_frame,
.disable_cdf_update = frame_header->disable_cdf_update,
.allow_screen_content_tools = frame_header->allow_screen_content_tools,
.force_integer_mv = frame_header->force_integer_mv ||
frame_header->frame_type == AV1_FRAME_INTRA_ONLY ||
frame_header->frame_type == AV1_FRAME_KEY,
.coded_denom = frame_header->coded_denom,
.allow_intrabc = frame_header->allow_intrabc,
.allow_high_precision_mv = frame_header->allow_high_precision_mv,
.interp_filter = frame_header->interpolation_filter,
.switchable_motion_mode = frame_header->is_motion_mode_switchable,
.use_ref_frame_mvs = frame_header->use_ref_frame_mvs,
.disable_frame_end_update_cdf = frame_header->disable_frame_end_update_cdf,
.delta_q_present = frame_header->delta_q_present,
.delta_q_res = frame_header->delta_q_res,
.using_qmatrix = frame_header->using_qmatrix,
.coded_lossless = s->cur_frame.coded_lossless,
.use_superres = frame_header->use_superres,
.tx_mode = frame_header->tx_mode,
.reference_mode = frame_header->reference_select,
.allow_warped_motion = frame_header->allow_warped_motion,
.reduced_tx_set = frame_header->reduced_tx_set,
.skip_mode = frame_header->skip_mode_present,
/* Tiling Info */
.num_tile_cols = frame_header->tile_cols,
.num_tile_rows = frame_header->tile_rows,
.context_update_tile_id = frame_header->context_update_tile_id,
/* CDEF */
.cdef_damping_minus_3 = frame_header->cdef_damping_minus_3,
.cdef_bits = frame_header->cdef_bits,
/* SkipModeFrames */
.SkipModeFrame0 = frame_header->skip_mode_present ?
s->cur_frame.skip_mode_frame_idx[0] : 0,
.SkipModeFrame1 = frame_header->skip_mode_present ?
s->cur_frame.skip_mode_frame_idx[1] : 0,
/* QP Information */
.base_qindex = frame_header->base_q_idx,
.qp_y_dc_delta_q = frame_header->delta_q_y_dc,
.qp_u_dc_delta_q = frame_header->delta_q_u_dc,
.qp_v_dc_delta_q = frame_header->delta_q_v_dc,
.qp_u_ac_delta_q = frame_header->delta_q_u_ac,
.qp_v_ac_delta_q = frame_header->delta_q_v_ac,
.qm_y = frame_header->qm_y,
.qm_u = frame_header->qm_u,
.qm_v = frame_header->qm_v,
/* Segmentation */
.segmentation_enabled = frame_header->segmentation_enabled,
.segmentation_update_map = frame_header->segmentation_update_map,
.segmentation_update_data = frame_header->segmentation_update_data,
.segmentation_temporal_update = frame_header->segmentation_temporal_update,
/* Loopfilter */
.loop_filter_level[0] = frame_header->loop_filter_level[0],
.loop_filter_level[1] = frame_header->loop_filter_level[1],
.loop_filter_level_u = frame_header->loop_filter_level[2],
.loop_filter_level_v = frame_header->loop_filter_level[3],
.loop_filter_sharpness = frame_header->loop_filter_sharpness,
.loop_filter_delta_enabled = frame_header->loop_filter_delta_enabled,
.loop_filter_delta_update = frame_header->loop_filter_delta_update,
.loop_filter_mode_deltas[0] = frame_header->loop_filter_mode_deltas[0],
.loop_filter_mode_deltas[1] = frame_header->loop_filter_mode_deltas[1],
.delta_lf_present = frame_header->delta_lf_present,
.delta_lf_res = frame_header->delta_lf_res,
.delta_lf_multi = frame_header->delta_lf_multi,
/* Restoration */
.lr_type[0] = remap_lr_type[frame_header->lr_type[0]],
.lr_type[1] = remap_lr_type[frame_header->lr_type[1]],
.lr_type[2] = remap_lr_type[frame_header->lr_type[2]],
.lr_unit_size[0] = 1 + frame_header->lr_unit_shift,
.lr_unit_size[1] = 1 + frame_header->lr_unit_shift - frame_header->lr_uv_shift,
.lr_unit_size[2] = 1 + frame_header->lr_unit_shift - frame_header->lr_uv_shift,
/* Reference Frames */
.temporal_layer_id = s->cur_frame.temporal_id,
.spatial_layer_id = s->cur_frame.spatial_id,
/* Film Grain Params */
.apply_grain = apply_grain,
.overlap_flag = film_grain->overlap_flag,
.scaling_shift_minus8 = film_grain->grain_scaling_minus_8,
.chroma_scaling_from_luma = film_grain->chroma_scaling_from_luma,
.ar_coeff_lag = film_grain->ar_coeff_lag,
.ar_coeff_shift_minus6 = film_grain->ar_coeff_shift_minus_6,
.grain_scale_shift = film_grain->grain_scale_shift,
.clip_to_restricted_range = film_grain->clip_to_restricted_range,
.num_y_points = film_grain->num_y_points,
.num_cb_points = film_grain->num_cb_points,
.num_cr_points = film_grain->num_cr_points,
.random_seed = film_grain->grain_seed,
.cb_mult = film_grain->cb_mult,
.cb_luma_mult = film_grain->cb_luma_mult,
.cb_offset = film_grain->cb_offset,
.cr_mult = film_grain->cr_mult,
.cr_luma_mult = film_grain->cr_luma_mult,
.cr_offset = film_grain->cr_offset
}
};
/* Tiling Info */
for (i = 0; i < frame_header->tile_cols; ++i) {
ppc->tile_widths[i] = frame_header->width_in_sbs_minus_1[i] + 1;
}
for (i = 0; i < frame_header->tile_rows; ++i) {
ppc->tile_heights[i] = frame_header->height_in_sbs_minus_1[i] + 1;
}
/* CDEF */
for (i = 0; i < (1 << frame_header->cdef_bits); ++i) {
ppc->cdef_y_strength[i] = (frame_header->cdef_y_pri_strength[i] & 0x0F) | (frame_header->cdef_y_sec_strength[i] << 4);
ppc->cdef_uv_strength[i] = (frame_header->cdef_uv_pri_strength[i] & 0x0F) | (frame_header->cdef_uv_sec_strength[i] << 4);
}
/* Segmentation */
for (i = 0; i < AV1_MAX_SEGMENTS; ++i) {
ppc->segmentation_feature_mask[i] = 0;
for (j = 0; j < AV1_SEG_LVL_MAX; ++j) {
ppc->segmentation_feature_mask[i] |= frame_header->feature_enabled[i][j] << j;
ppc->segmentation_feature_data[i][j] = frame_header->feature_value[i][j];
}
}
for (i = 0; i < AV1_NUM_REF_FRAMES; ++i) {
/* Loopfilter */
ppc->loop_filter_ref_deltas[i] = frame_header->loop_filter_ref_deltas[i];
/* Reference Frames */
ppc->ref_frame_map[i] = ff_nvdec_get_ref_idx(s->ref[i].f);
}
if (frame_header->primary_ref_frame == AV1_PRIMARY_REF_NONE) {
ppc->primary_ref_frame = -1;
} else {
int8_t pri_ref_idx = frame_header->ref_frame_idx[frame_header->primary_ref_frame];
ppc->primary_ref_frame = ppc->ref_frame_map[pri_ref_idx];
}
for (i = 0; i < AV1_REFS_PER_FRAME; ++i) {
/* Ref Frame List */
int8_t ref_idx = frame_header->ref_frame_idx[i];
AVFrame *ref_frame = s->ref[ref_idx].f;
ppc->ref_frame[i].index = ppc->ref_frame_map[ref_idx];
ppc->ref_frame[i].width = ref_frame->width;
ppc->ref_frame[i].height = ref_frame->height;
/* Global Motion */
ppc->global_motion[i].invalid = !frame_header->is_global[AV1_REF_FRAME_LAST + i];
ppc->global_motion[i].wmtype = s->cur_frame.gm_type[AV1_REF_FRAME_LAST + i];
for (j = 0; j < 6; ++j) {
ppc->global_motion[i].wmmat[j] = s->cur_frame.gm_params[AV1_REF_FRAME_LAST + i][j];
}
}
/* Film Grain Params */
if (apply_grain) {
for (i = 0; i < 14; ++i) {
ppc->scaling_points_y[i][0] = film_grain->point_y_value[i];
ppc->scaling_points_y[i][1] = film_grain->point_y_scaling[i];
}
for (i = 0; i < 10; ++i) {
ppc->scaling_points_cb[i][0] = film_grain->point_cb_value[i];
ppc->scaling_points_cb[i][1] = film_grain->point_cb_scaling[i];
ppc->scaling_points_cr[i][0] = film_grain->point_cr_value[i];
ppc->scaling_points_cr[i][1] = film_grain->point_cr_scaling[i];
}
for (i = 0; i < 24; ++i) {
ppc->ar_coeffs_y[i] = (short)film_grain->ar_coeffs_y_plus_128[i] - 128;
}
for (i = 0; i < 25; ++i) {
ppc->ar_coeffs_cb[i] = (short)film_grain->ar_coeffs_cb_plus_128[i] - 128;
ppc->ar_coeffs_cr[i] = (short)film_grain->ar_coeffs_cr_plus_128[i] - 128;
}
}
return 0;
}
static int nvdec_av1_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
const AV1DecContext *s = avctx->priv_data;
const AV1RawFrameHeader *frame_header = s->raw_frame_header;
NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
void *tmp;
ctx->nb_slices = frame_header->tile_cols * frame_header->tile_rows;
tmp = av_fast_realloc(ctx->slice_offsets, &ctx->slice_offsets_allocated,
ctx->nb_slices * 2 * sizeof(*ctx->slice_offsets));
if (!tmp) {
return AVERROR(ENOMEM);
}
ctx->slice_offsets = tmp;
/* Shortcut if all tiles are in the same buffer */
if (ctx->nb_slices == s->tg_end - s->tg_start + 1) {
ctx->bitstream = (uint8_t*)buffer;
ctx->bitstream_len = size;
for (int i = 0; i < ctx->nb_slices; ++i) {
ctx->slice_offsets[i*2 ] = s->tile_group_info[i].tile_offset;
ctx->slice_offsets[i*2 + 1] = ctx->slice_offsets[i*2] + s->tile_group_info[i].tile_size;
}
return 0;
}
tmp = av_fast_realloc(ctx->bitstream_internal, &ctx->bitstream_allocated,
ctx->bitstream_len + size);
if (!tmp) {
return AVERROR(ENOMEM);
}
ctx->bitstream = ctx->bitstream_internal = tmp;
memcpy(ctx->bitstream + ctx->bitstream_len, buffer, size);
for (uint32_t tile_num = s->tg_start; tile_num <= s->tg_end; ++tile_num) {
ctx->slice_offsets[tile_num*2 ] = ctx->bitstream_len + s->tile_group_info[tile_num].tile_offset;
ctx->slice_offsets[tile_num*2 + 1] = ctx->slice_offsets[tile_num*2] + s->tile_group_info[tile_num].tile_size;
}
ctx->bitstream_len += size;
return 0;
}
static int nvdec_av1_frame_params(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
{
/* Maximum of 8 reference frames, but potentially stored twice due to film grain */
return ff_nvdec_frame_params(avctx, hw_frames_ctx, 8 * 2, 0);
}
const AVHWAccel ff_av1_nvdec_hwaccel = {
.name = "av1_nvdec",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_AV1,
.pix_fmt = AV_PIX_FMT_CUDA,
.start_frame = nvdec_av1_start_frame,
.end_frame = ff_nvdec_simple_end_frame,
.decode_slice = nvdec_av1_decode_slice,
.frame_params = nvdec_av1_frame_params,
.init = ff_nvdec_decode_init,
.uninit = ff_nvdec_decode_uninit,
.priv_data_size = sizeof(NVDECContext),
};
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