From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- media/ffvpx/libavcodec/av1_parser.c | 216 ++++++++++++++++++++++++++++++++++++ 1 file changed, 216 insertions(+) create mode 100644 media/ffvpx/libavcodec/av1_parser.c (limited to 'media/ffvpx/libavcodec/av1_parser.c') diff --git a/media/ffvpx/libavcodec/av1_parser.c b/media/ffvpx/libavcodec/av1_parser.c new file mode 100644 index 0000000000..14dae92fe9 --- /dev/null +++ b/media/ffvpx/libavcodec/av1_parser.c @@ -0,0 +1,216 @@ +/* + * AV1 parser + * + * Copyright (C) 2018 James Almer + * + * 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 "libavutil/avassert.h" +#include "cbs.h" +#include "cbs_av1.h" +#include "parser.h" + +typedef struct AV1ParseContext { + CodedBitstreamContext *cbc; + CodedBitstreamFragment temporal_unit; + int parsed_extradata; +} AV1ParseContext; + +static const enum AVPixelFormat pix_fmts_8bit[2][2] = { + { AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE }, + { AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P }, +}; +static const enum AVPixelFormat pix_fmts_10bit[2][2] = { + { AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE }, + { AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10 }, +}; +static const enum AVPixelFormat pix_fmts_12bit[2][2] = { + { AV_PIX_FMT_YUV444P12, AV_PIX_FMT_NONE }, + { AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12 }, +}; + +static const enum AVPixelFormat pix_fmts_rgb[3] = { + AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12, +}; + +static int av1_parser_parse(AVCodecParserContext *ctx, + AVCodecContext *avctx, + const uint8_t **out_data, int *out_size, + const uint8_t *data, int size) +{ + AV1ParseContext *s = ctx->priv_data; + CodedBitstreamFragment *td = &s->temporal_unit; + const CodedBitstreamAV1Context *av1 = s->cbc->priv_data; + const AV1RawSequenceHeader *seq; + const AV1RawColorConfig *color; + int ret; + + *out_data = data; + *out_size = size; + + ctx->key_frame = -1; + ctx->pict_type = AV_PICTURE_TYPE_NONE; + ctx->picture_structure = AV_PICTURE_STRUCTURE_UNKNOWN; + + s->cbc->log_ctx = avctx; + + if (avctx->extradata_size && !s->parsed_extradata) { + s->parsed_extradata = 1; + + ret = ff_cbs_read_extradata_from_codec(s->cbc, td, avctx); + if (ret < 0) { + av_log(avctx, AV_LOG_WARNING, "Failed to parse extradata.\n"); + } + + ff_cbs_fragment_reset(td); + } + + ret = ff_cbs_read(s->cbc, td, data, size); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Failed to parse temporal unit.\n"); + goto end; + } + + if (!av1->sequence_header) { + av_log(avctx, AV_LOG_ERROR, "No sequence header available\n"); + goto end; + } + + seq = av1->sequence_header; + color = &seq->color_config; + + for (int i = 0; i < td->nb_units; i++) { + const CodedBitstreamUnit *unit = &td->units[i]; + const AV1RawOBU *obu = unit->content; + const AV1RawFrameHeader *frame; + + if (unit->type == AV1_OBU_FRAME) + frame = &obu->obu.frame.header; + else if (unit->type == AV1_OBU_FRAME_HEADER) + frame = &obu->obu.frame_header; + else + continue; + + if (obu->header.spatial_id > 0) + continue; + + if (!frame->show_frame && !frame->show_existing_frame) + continue; + + ctx->width = frame->frame_width_minus_1 + 1; + ctx->height = frame->frame_height_minus_1 + 1; + + ctx->key_frame = frame->frame_type == AV1_FRAME_KEY && !frame->show_existing_frame; + + switch (frame->frame_type) { + case AV1_FRAME_KEY: + case AV1_FRAME_INTRA_ONLY: + ctx->pict_type = AV_PICTURE_TYPE_I; + break; + case AV1_FRAME_INTER: + ctx->pict_type = AV_PICTURE_TYPE_P; + break; + case AV1_FRAME_SWITCH: + ctx->pict_type = AV_PICTURE_TYPE_SP; + break; + } + ctx->picture_structure = AV_PICTURE_STRUCTURE_FRAME; + } + + switch (av1->bit_depth) { + case 8: + ctx->format = color->mono_chrome ? AV_PIX_FMT_GRAY8 + : pix_fmts_8bit [color->subsampling_x][color->subsampling_y]; + break; + case 10: + ctx->format = color->mono_chrome ? AV_PIX_FMT_GRAY10 + : pix_fmts_10bit[color->subsampling_x][color->subsampling_y]; + break; + case 12: + ctx->format = color->mono_chrome ? AV_PIX_FMT_GRAY12 + : pix_fmts_12bit[color->subsampling_x][color->subsampling_y]; + break; + } + av_assert2(ctx->format != AV_PIX_FMT_NONE); + + if (!color->subsampling_x && !color->subsampling_y && + color->matrix_coefficients == AVCOL_SPC_RGB && + color->color_primaries == AVCOL_PRI_BT709 && + color->transfer_characteristics == AVCOL_TRC_IEC61966_2_1) + ctx->format = pix_fmts_rgb[color->high_bitdepth + color->twelve_bit]; + + avctx->profile = seq->seq_profile; + avctx->level = seq->seq_level_idx[0]; + + avctx->colorspace = (enum AVColorSpace) color->matrix_coefficients; + avctx->color_primaries = (enum AVColorPrimaries) color->color_primaries; + avctx->color_trc = (enum AVColorTransferCharacteristic) color->transfer_characteristics; + avctx->color_range = color->color_range ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG; + + if (seq->timing_info_present_flag) { + const AV1RawTimingInfo *timing = &seq->timing_info; + av_reduce(&avctx->framerate.den, &avctx->framerate.num, + timing->num_units_in_display_tick, timing->time_scale, INT_MAX); + } + +end: + ff_cbs_fragment_reset(td); + + s->cbc->log_ctx = NULL; + + return size; +} + +static const CodedBitstreamUnitType decompose_unit_types[] = { + AV1_OBU_TEMPORAL_DELIMITER, + AV1_OBU_SEQUENCE_HEADER, + AV1_OBU_FRAME_HEADER, + AV1_OBU_TILE_GROUP, + AV1_OBU_FRAME, +}; + +static av_cold int av1_parser_init(AVCodecParserContext *ctx) +{ + AV1ParseContext *s = ctx->priv_data; + int ret; + + ret = ff_cbs_init(&s->cbc, AV_CODEC_ID_AV1, NULL); + if (ret < 0) + return ret; + + s->cbc->decompose_unit_types = decompose_unit_types; + s->cbc->nb_decompose_unit_types = FF_ARRAY_ELEMS(decompose_unit_types); + + return 0; +} + +static void av1_parser_close(AVCodecParserContext *ctx) +{ + AV1ParseContext *s = ctx->priv_data; + + ff_cbs_fragment_free(&s->temporal_unit); + ff_cbs_close(&s->cbc); +} + +const AVCodecParser ff_av1_parser = { + .codec_ids = { AV_CODEC_ID_AV1 }, + .priv_data_size = sizeof(AV1ParseContext), + .parser_init = av1_parser_init, + .parser_close = av1_parser_close, + .parser_parse = av1_parser_parse, +}; -- cgit v1.2.3