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https://github.com/FFmpeg/FFmpeg.git
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f9c5c5358c
Use AV1DecContext's current_obu to access the original OBUs, and feed them to videotoolbox, rather than the bare slice data passed via decode_slice. This requires a small addition to AV1DecContext, for keeping track of the current range of OBUs that belong to the current frame. Co-authored-by: Ruslan Chernenko <ractyfree@gmail.com> Co-authored-by: Martin Storsjö <martin@martin.st> Signed-off-by: Martin Storsjö <martin@martin.st>
106 lines
3.7 KiB
C
106 lines
3.7 KiB
C
/*
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* Videotoolbox hardware acceleration for AV1
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* Copyright (c) 2023 Jan Ekström
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* Copyright (c) 2024 Ruslan Chernenko
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* Copyright (c) 2024 Martin Storsjö
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/mem.h"
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#include "av1dec.h"
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#include "hwaccel_internal.h"
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#include "internal.h"
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#include "vt_internal.h"
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CFDataRef ff_videotoolbox_av1c_extradata_create(AVCodecContext *avctx)
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{
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AV1DecContext *s = avctx->priv_data;
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uint8_t *buf;
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CFDataRef data;
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if (!s->raw_seq)
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return NULL;
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buf = av_malloc(s->seq_data_ref->size + 4);
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if (!buf)
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return NULL;
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buf[0] = 0x81; // version and marker (constant)
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buf[1] = s->raw_seq->seq_profile << 5 | s->raw_seq->seq_level_idx[0];
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buf[2] = s->raw_seq->seq_tier[0] << 7 |
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s->raw_seq->color_config.high_bitdepth << 6 |
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s->raw_seq->color_config.twelve_bit << 5 |
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s->raw_seq->color_config.mono_chrome << 4 |
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s->raw_seq->color_config.subsampling_x << 3 |
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s->raw_seq->color_config.subsampling_y << 2 |
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s->raw_seq->color_config.chroma_sample_position;
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if (s->raw_seq->initial_display_delay_present_flag)
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buf[3] = 0 << 5 |
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s->raw_seq->initial_display_delay_present_flag << 4 |
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s->raw_seq->initial_display_delay_minus_1[0];
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else
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buf[3] = 0x00;
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memcpy(buf + 4, s->seq_data_ref->data, s->seq_data_ref->size);
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data = CFDataCreate(kCFAllocatorDefault, buf, s->seq_data_ref->size + 4);
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av_free(buf);
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return data;
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};
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static int videotoolbox_av1_start_frame(AVCodecContext *avctx,
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const uint8_t *buffer,
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uint32_t size)
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{
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return 0;
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}
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static int videotoolbox_av1_decode_slice(AVCodecContext *avctx,
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const uint8_t *buffer,
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uint32_t size)
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{
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return 0;
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}
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static int videotoolbox_av1_end_frame(AVCodecContext *avctx)
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{
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const AV1DecContext *s = avctx->priv_data;
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VTContext *vtctx = avctx->internal->hwaccel_priv_data;
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AVFrame *frame = s->cur_frame.f;
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vtctx->bitstream_size = 0;
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for (int i = s->start_unit; i < s->nb_unit; i++)
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ff_videotoolbox_buffer_append(vtctx, s->current_obu.units[i].data,
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s->current_obu.units[i].data_size);
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return ff_videotoolbox_common_end_frame(avctx, frame);
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}
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const FFHWAccel ff_av1_videotoolbox_hwaccel = {
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.p.name = "av1_videotoolbox",
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.p.type = AVMEDIA_TYPE_VIDEO,
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.p.id = AV_CODEC_ID_AV1,
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.p.pix_fmt = AV_PIX_FMT_VIDEOTOOLBOX,
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.alloc_frame = ff_videotoolbox_alloc_frame,
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.start_frame = videotoolbox_av1_start_frame,
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.decode_slice = videotoolbox_av1_decode_slice,
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.end_frame = videotoolbox_av1_end_frame,
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.frame_params = ff_videotoolbox_frame_params,
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.init = ff_videotoolbox_common_init,
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.uninit = ff_videotoolbox_uninit,
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.priv_data_size = sizeof(VTContext),
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};
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