GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/cljrdec.c Lines: 29 32 90.6 %
Date: 2019-11-22 03:34:36 Branches: 9 12 75.0 %

Line Branch Exec Source
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/*
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 * Cirrus Logic AccuPak (CLJR) decoder
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 * Copyright (c) 2003 Alex Beregszaszi
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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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 * Cirrus Logic AccuPak decoder.
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 */
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#include "avcodec.h"
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#include "get_bits.h"
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#include "internal.h"
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static int decode_frame(AVCodecContext *avctx,
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                        void *data, int *got_frame,
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                        AVPacket *avpkt)
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{
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237
    const uint8_t *buf = avpkt->data;
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237
    int buf_size       = avpkt->size;
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    GetBitContext gb;
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    AVFrame * const p = data;
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    int x, y, ret;
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    if (avctx->height <= 0 || avctx->width <= 0) {
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        av_log(avctx, AV_LOG_ERROR, "Invalid width or height\n");
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        return AVERROR_INVALIDDATA;
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    }
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    if (buf_size / avctx->height < avctx->width) {
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1
        av_log(avctx, AV_LOG_ERROR,
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               "Resolution larger than buffer size. Invalid header?\n");
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1
        return AVERROR_INVALIDDATA;
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    }
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    if ((ret = ff_get_buffer(avctx, p, 0)) < 0)
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        return ret;
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    p->pict_type = AV_PICTURE_TYPE_I;
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    p->key_frame = 1;
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    init_get_bits(&gb, buf, buf_size * 8);
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51616
    for (y = 0; y < avctx->height; y++) {
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51380
        uint8_t *luma = &p->data[0][y * p->linesize[0]];
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51380
        uint8_t *cb   = &p->data[1][y * p->linesize[1]];
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51380
        uint8_t *cr   = &p->data[2][y * p->linesize[2]];
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4257080
        for (x = 0; x < avctx->width; x += 4) {
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4205700
            luma[3] = (get_bits(&gb, 5)*33) >> 2;
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4205700
            luma[2] = (get_bits(&gb, 5)*33) >> 2;
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4205700
            luma[1] = (get_bits(&gb, 5)*33) >> 2;
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4205700
            luma[0] = (get_bits(&gb, 5)*33) >> 2;
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4205700
            luma += 4;
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4205700
            *(cb++) = get_bits(&gb, 6) << 2;
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4205700
            *(cr++) = get_bits(&gb, 6) << 2;
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        }
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    }
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    *got_frame = 1;
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    return buf_size;
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}
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static av_cold int decode_init(AVCodecContext *avctx)
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{
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    avctx->pix_fmt = AV_PIX_FMT_YUV411P;
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    return 0;
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}
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AVCodec ff_cljr_decoder = {
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    .name           = "cljr",
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    .long_name      = NULL_IF_CONFIG_SMALL("Cirrus Logic AccuPak"),
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    .type           = AVMEDIA_TYPE_VIDEO,
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    .id             = AV_CODEC_ID_CLJR,
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    .init           = decode_init,
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    .decode         = decode_frame,
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    .capabilities   = AV_CODEC_CAP_DR1,
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};
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