GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/vp8_parser.c Lines: 25 30 83.3 %
Date: 2020-08-14 10:39:37 Branches: 9 12 75.0 %

Line Branch Exec Source
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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/intreadwrite.h"
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#include "avcodec.h"
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static int parse(AVCodecParserContext *s,
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                 AVCodecContext *avctx,
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                 const uint8_t **poutbuf, int *poutbuf_size,
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                 const uint8_t *buf, int buf_size)
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{
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    unsigned int frame_type;
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    unsigned int profile;
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    *poutbuf      = buf;
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    *poutbuf_size = buf_size;
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    if (buf_size < 3)
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        return buf_size;
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    frame_type = buf[0] & 1;
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    profile    = (buf[0] >> 1) & 7;
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    if (profile > 3) {
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        av_log(avctx, AV_LOG_ERROR, "Invalid profile %u.\n", profile);
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        return buf_size;
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    }
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    avctx->profile = profile;
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    s->key_frame   = frame_type == 0;
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    s->pict_type   = frame_type ? AV_PICTURE_TYPE_P : AV_PICTURE_TYPE_I;
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    s->format      = AV_PIX_FMT_YUV420P;
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    s->field_order = AV_FIELD_PROGRESSIVE;
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    s->picture_structure = AV_PICTURE_STRUCTURE_FRAME;
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    if (frame_type == 0) {
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        unsigned int sync_code;
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        unsigned int width, height;
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        if (buf_size < 10)
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            return buf_size;
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        sync_code = AV_RL24(buf + 3);
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        if (sync_code != 0x2a019d) {
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            av_log(avctx, AV_LOG_ERROR, "Invalid sync code %06x.\n", sync_code);
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            return buf_size;
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        }
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        width  = AV_RL16(buf + 6) & 0x3fff;
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        height = AV_RL16(buf + 8) & 0x3fff;
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        s->width        = width;
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        s->height       = height;
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        s->coded_width  = FFALIGN(width,  16);
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        s->coded_height = FFALIGN(height, 16);
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    }
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    return buf_size;
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}
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AVCodecParser ff_vp8_parser = {
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    .codec_ids    = { AV_CODEC_ID_VP8 },
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    .parser_parse = parse,
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};