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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/ffvpx/libavcodec/vp9_parser.c | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | media/ffvpx/libavcodec/vp9_parser.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/vp9_parser.c b/media/ffvpx/libavcodec/vp9_parser.c new file mode 100644 index 0000000000..ffcb93505f --- /dev/null +++ b/media/ffvpx/libavcodec/vp9_parser.c @@ -0,0 +1,70 @@ +/* + * VP9 compatible video decoder + * + * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com> + * Copyright (C) 2013 Clément Bœsch <u pkh me> + * + * 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/intreadwrite.h" +#include "libavcodec/get_bits.h" +#include "parser.h" + +static int parse(AVCodecParserContext *ctx, + AVCodecContext *avctx, + const uint8_t **out_data, int *out_size, + const uint8_t *data, int size) +{ + GetBitContext gb; + int res, profile, keyframe; + + *out_data = data; + *out_size = size; + + if (!size || (res = init_get_bits8(&gb, data, size)) < 0) + return size; // parsers can't return errors + get_bits(&gb, 2); // frame marker + profile = get_bits1(&gb); + profile |= get_bits1(&gb) << 1; + if (profile == 3) profile += get_bits1(&gb); + if (profile > 3) + return size; + + avctx->profile = profile; + + if (get_bits1(&gb)) { + keyframe = 0; + } else { + keyframe = !get_bits1(&gb); + } + + if (!keyframe) { + ctx->pict_type = AV_PICTURE_TYPE_P; + ctx->key_frame = 0; + } else { + ctx->pict_type = AV_PICTURE_TYPE_I; + ctx->key_frame = 1; + } + + return size; +} + +const AVCodecParser ff_vp9_parser = { + .codec_ids = { AV_CODEC_ID_VP9 }, + .parser_parse = parse, +}; |