GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/rv34_parser.c Lines: 22 22 100.0 %
Date: 2020-10-23 17:01:47 Branches: 10 10 100.0 %

Line Branch Exec Source
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/*
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 * RV30/40 parser
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 * Copyright (c) 2011 Konstantin Shishkov
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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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/**
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 * @file
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 * RV30/40 parser
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 */
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#include "parser.h"
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#include "libavutil/intreadwrite.h"
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typedef struct RV34ParseContext {
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    ParseContext pc;
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    int64_t key_dts;
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    int key_pts;
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} RV34ParseContext;
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static const int rv_to_av_frame_type[4] = {
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    AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B,
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};
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static int rv34_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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    RV34ParseContext *pc = s->priv_data;
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    int type, pts, hdr;
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    if (buf_size < 13 + *buf * 8) {
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3
        *poutbuf = buf;
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3
        *poutbuf_size = buf_size;
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3
        return buf_size;
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    }
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    hdr = AV_RB32(buf + 9 + *buf * 8);
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    if (avctx->codec_id == AV_CODEC_ID_RV30) {
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        type = (hdr >> 27) & 3;
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        pts  = (hdr >>  7) & 0x1FFF;
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    } else {
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        type = (hdr >> 29) & 3;
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        pts  = (hdr >>  6) & 0x1FFF;
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    }
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    if (type != 3 && s->pts != AV_NOPTS_VALUE) {
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        pc->key_dts = s->pts;
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        pc->key_pts = pts;
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    } else {
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        if (type != 3)
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2
            s->pts = pc->key_dts + ((pts - pc->key_pts) & 0x1FFF);
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        else
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            s->pts = pc->key_dts - ((pc->key_pts - pts) & 0x1FFF);
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    }
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    s->pict_type = rv_to_av_frame_type[type];
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    *poutbuf = buf;
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    *poutbuf_size = buf_size;
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    return buf_size;
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}
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#if CONFIG_RV30_PARSER
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AVCodecParser ff_rv30_parser = {
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    .codec_ids      = { AV_CODEC_ID_RV30 },
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    .priv_data_size = sizeof(RV34ParseContext),
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    .parser_parse   = rv34_parse,
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};
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#endif
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#if CONFIG_RV40_PARSER
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AVCodecParser ff_rv40_parser = {
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    .codec_ids      = { AV_CODEC_ID_RV40 },
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    .priv_data_size = sizeof(RV34ParseContext),
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    .parser_parse   = rv34_parse,
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};
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#endif