GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/dcadec.h Lines: 8 14 57.1 %
Date: 2019-11-18 18:00:01 Branches: 3 16 18.8 %

Line Branch Exec Source
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/*
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 * Copyright (C) 2016 foo86
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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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#ifndef AVCODEC_DCADEC_H
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#define AVCODEC_DCADEC_H
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#include "libavutil/common.h"
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#include "libavutil/crc.h"
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#include "libavutil/float_dsp.h"
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#include "avcodec.h"
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#include "get_bits.h"
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#include "dca.h"
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#include "dcadsp.h"
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#include "dca_core.h"
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#include "dca_exss.h"
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#include "dca_xll.h"
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#include "dca_lbr.h"
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#define DCA_PACKET_CORE         0x01
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#define DCA_PACKET_EXSS         0x02
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#define DCA_PACKET_XLL          0x04
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#define DCA_PACKET_LBR          0x08
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#define DCA_PACKET_MASK         0x0f
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#define DCA_PACKET_RECOVERY     0x10    ///< Sync error recovery flag
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#define DCA_PACKET_RESIDUAL     0x20    ///< Core valid for residual decoding
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typedef struct DCAContext {
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    const AVClass   *class;       ///< class for AVOptions
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    AVCodecContext  *avctx;
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    DCACoreDecoder core;  ///< Core decoder context
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    DCAExssParser  exss;  ///< EXSS parser context
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    DCAXllDecoder  xll;   ///< XLL decoder context
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    DCALbrDecoder  lbr;   ///< LBR decoder context
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    DCADSPContext   dcadsp;
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    const AVCRC     *crctab;
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    uint8_t         *buffer;    ///< Packet buffer
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    unsigned int    buffer_size;
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    int     packet; ///< Packet flags
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    int     request_channel_layout; ///< Converted from avctx.request_channel_layout
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    int     core_only;              ///< Core only decoding flag
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} DCAContext;
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int ff_dca_set_channel_layout(AVCodecContext *avctx, int *ch_remap, int dca_mask);
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void ff_dca_downmix_to_stereo_fixed(DCADSPContext *dcadsp, int32_t **samples,
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                                    int *coeff_l, int nsamples, int ch_mask);
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void ff_dca_downmix_to_stereo_float(AVFloatDSPContext *fdsp, float **samples,
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                                    int *coeff_l, int nsamples, int ch_mask);
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static inline int ff_dca_check_crc(AVCodecContext *avctx, GetBitContext *s,
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                                   int p1, int p2)
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{
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    DCAContext *dca = avctx->priv_data;
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    if (!(avctx->err_recognition & (AV_EF_CRCCHECK | AV_EF_CAREFUL)))
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        return 0;
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    if (((p1 | p2) & 7) || p1 < 0 || p2 > s->size_in_bits || p2 - p1 < 16)
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        return -1;
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    if (av_crc(dca->crctab, 0xffff, s->buffer + p1 / 8, (p2 - p1) / 8))
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        return -1;
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    return 0;
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}
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static inline int ff_dca_seek_bits(GetBitContext *s, int p)
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{
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    if (p < get_bits_count(s) || p > s->size_in_bits)
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        return -1;
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    skip_bits_long(s, p - get_bits_count(s));
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    return 0;
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}
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#endif