int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
{
    codec_parameters_reset(dst);
    memcpy(dst, src, sizeof(*dst));

    dst->extradata      = NULL;
    dst->extradata_size = 0;
    if (src->extradata) {
        dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);

            

Reported by FlawFinder.

                      dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
        if (!dst->extradata)
            return AVERROR(ENOMEM);
        memcpy(dst->extradata, src->extradata, src->extradata_size);
        dst->extradata_size = src->extradata_size;
    }

    return 0;
}

            

Reported by FlawFinder.

                      par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
        if (!par->extradata)
            return AVERROR(ENOMEM);
        memcpy(par->extradata, codec->extradata, codec->extradata_size);
        par->extradata_size = codec->extradata_size;
    }

    return 0;
}

            

Reported by FlawFinder.

                      codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
        if (!codec->extradata)
            return AVERROR(ENOMEM);
        memcpy(codec->extradata, par->extradata, par->extradata_size);
        codec->extradata_size = par->extradata_size;
    }

    return 0;
}

            

Reported by FlawFinder.

                      old_len = sub->size;
        if (av_grow_packet(sub, len) < 0)
            return NULL;
        memcpy(sub->data + old_len, event, len);
    } else {
        /* new event */

        if (q->nb_subs >= INT_MAX/sizeof(*q->subs) - 1)
            return NULL;

            

Reported by FlawFinder.

                      subs[q->nb_subs++] = sub;
        sub->flags |= AV_PKT_FLAG_KEY;
        sub->pts = sub->dts = 0;
        memcpy(sub->data, event, len);
    }
    return sub;
}

static int cmp_pkt_sub_ts_pos(const void *a, const void *b)

            

Reported by FlawFinder.

              
void ff_subtitles_read_text_chunk(FFTextReader *tr, AVBPrint *buf)
{
    char eol_buf[5], last_was_cr = 0;
    int n = 0, i = 0, nb_eol = 0;

    av_bprint_clear(buf);

    for (;;) {

            

Reported by FlawFinder.

              const char *ff_smil_get_attr_ptr(const char *s, const char *attr)
{
    int in_quotes = 0;
    const size_t len = strlen(attr);

    while (*s) {
        while (*s) {
            if (!in_quotes && av_isspace(*s))
                break;

            

Reported by FlawFinder.

                      memset(dst_left, 0x69, s->samples * 4);

        if (dst_r)
            memset(dst_right, 0x69, s->samples * 4);
    }

    return 0;
}


            

Reported by Cppcheck.

                      memset(dst_left, 0x69, s->samples * 4);

        if (dst_r)
            memset(dst_right, 0x69, s->samples * 4);
    }

    return 0;
}


            

Reported by Cppcheck.

                      memset(dst_left, 0x69, s->samples * 4);

        if (dst_r)
            memset(dst_right, 0x69, s->samples * 4);
    }

    return 0;
}


            

Reported by Cppcheck.

                          return ret;

        if (s->stereo)
            memcpy(samples_r, samples_l, bpp * s->samples);
    }

    return 0;
}


            

Reported by FlawFinder.

                  ei->x1 = ei->x2 = ei->y1 = ei->y2 = ei->duration = -1;
    ei->pts = AV_NOPTS_VALUE;
    ei->pos = -1;
    if (sscanf(line, "%d:%d:%d%*1[,.]%d --> %d:%d:%d%*1[,.]%d"
               "%*[ ]X1:%"PRId32" X2:%"PRId32" Y1:%"PRId32" Y2:%"PRId32,
               &hh1, &mm1, &ss1, &ms1,
               &hh2, &mm2, &ss2, &ms2,
               &ei->x1, &ei->x2, &ei->y1, &ei->y2) >= 8) {
        const int64_t start = (hh1*3600LL + mm1*60LL + ss1) * 1000LL + ms1;

            

Reported by FlawFinder.

                          if (strtol(line, &pline, 10) < 0 || line == pline)
                av_bprintf(&buf, "%s\n", line);
            else
                strcpy(line_cache, line);
        } else {
            if (has_event_info) {
                /* We have the information of previous event, append it to the
                 * queue. We insert the cached line if and only if the payload
                 * is empty and the cached line is not a standalone number. */

            

Reported by FlawFinder.

              static int srt_probe(const AVProbeData *p)
{
    int v;
    char buf[64], *pbuf;
    FFTextReader tr;

    ff_text_init_buf(&tr, p->buf, p->buf_size);

    while (ff_text_peek_r8(&tr) == '\r' || ff_text_peek_r8(&tr) == '\n')

            

Reported by FlawFinder.

                  AVBPrint buf;
    AVStream *st = avformat_new_stream(s, NULL);
    int res = 0;
    char line[4096], line_cache[4096];
    int has_event_info = 0;
    struct event_info ei;
    FFTextReader tr;
    ff_text_init_avio(s, &tr, s->pb);


            

Reported by FlawFinder.

                      if (!f)                                                               \
            av_log(avcl, level, __VA_ARGS__);                                 \
        else                                                                  \
            fprintf(f, __VA_ARGS__);                                          \
    } while (0)

static void hex_dump_internal(void *avcl, FILE *f, int level,
                              const uint8_t *buf, int size)
{

            

Reported by FlawFinder.

                              av_log(ctx, AV_LOG_INFO,
                       "%s  %-16s: ", indent, tag->key);
                while (*p) {
                    char tmp[256];
                    size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
                    av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
                    av_log(ctx, AV_LOG_INFO, "%s", tmp);
                    p += len;
                    if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");

            

Reported by FlawFinder.

                  }

    for (int j = 1; j <= tc[0]; j++) {
        char tcbuf[AV_TIMECODE_STR_SIZE];
        av_timecode_make_smpte_tc_string2(tcbuf, st->avg_frame_rate, tc[j], 0, 0);
        av_log(ctx, AV_LOG_INFO, "timecode - %s%s", tcbuf, j != tc[0] ? ", " : "");
    }
}


            

Reported by FlawFinder.

              static void dump_stream_format(const AVFormatContext *ic, int i,
                               int index, int is_output)
{
    char buf[256];
    int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
    const AVStream *st = ic->streams[i];
    const AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);
    const char *separator = ic->dump_separator;
    AVCodecContext *avctx;

            

Reported by FlawFinder.

                                 "already present, this muxer will not overwrite it.\n");
        } else {
            uint8_t buf[32];
            snprintf(buf, sizeof(buf), "0x%"PRIx64, par->channel_layout);
            av_dict_set(&s->metadata, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", buf, 0);
        }
    }

    return 0;

            

Reported by FlawFinder.

                  streaminfo = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA,
                                         &streaminfo_size);
    if (streaminfo && streaminfo_size == FLAC_STREAMINFO_SIZE) {
        memcpy(c->streaminfo, streaminfo, FLAC_STREAMINFO_SIZE);
        c->updated_streaminfo = 1;
    }

    if (pkt->size)
        avio_write(s->pb, pkt->data, pkt->size);

            

Reported by FlawFinder.

                             "write an attached picture.\n", st->index);
        return AVERROR(EINVAL);
    }
    mimelen = strlen(mimetype);

    /* get the picture type */
    e = av_dict_get(st->metadata, "comment", NULL, 0);
    for (i = 0; e && i < FF_ARRAY_ELEMS(ff_id3v2_picture_types); i++) {
        if (!av_strcasecmp(e->value, ff_id3v2_picture_types[i])) {

            

Reported by FlawFinder.

                  /* get the description */
    if ((e = av_dict_get(st->metadata, "title", NULL, 0)))
        desc = e->value;
    desclen = strlen(desc);

    blocklen = 4 + 4 + mimelen + 4 + desclen + 4 + 4 + 4 + 4 + 4 + pkt->size;
    if (blocklen >= 1<<24) {
        av_log(s, AV_LOG_ERROR, "Picture block too big %d >= %d\n", blocklen, 1<<24);
        return AVERROR(EINVAL);

            

Reported by FlawFinder.

                          avio_skip(pb, size - ALAC_PREAMBLE - ALAC_HEADER);
        } else {
            AV_WB32(st->codecpar->extradata, 36);
            memcpy(&st->codecpar->extradata[4], "alac", 4);
            AV_WB32(&st->codecpar->extradata[8], 0);
            memcpy(&st->codecpar->extradata[12], preamble, 12);
            if (avio_read(pb, &st->codecpar->extradata[24], ALAC_NEW_KUKI - 12) != ALAC_NEW_KUKI - 12) {
                av_log(s, AV_LOG_ERROR, "failed to read new kuki header\n");
                av_freep(&st->codecpar->extradata);

            

Reported by FlawFinder.

                          AV_WB32(st->codecpar->extradata, 36);
            memcpy(&st->codecpar->extradata[4], "alac", 4);
            AV_WB32(&st->codecpar->extradata[8], 0);
            memcpy(&st->codecpar->extradata[12], preamble, 12);
            if (avio_read(pb, &st->codecpar->extradata[24], ALAC_NEW_KUKI - 12) != ALAC_NEW_KUKI - 12) {
                av_log(s, AV_LOG_ERROR, "failed to read new kuki header\n");
                av_freep(&st->codecpar->extradata);
                return AVERROR_INVALIDDATA;
            }

            

Reported by FlawFinder.

                  unsigned int i;
    unsigned int nb_entries = avio_rb32(pb);
    for (i = 0; i < nb_entries && !avio_feof(pb); i++) {
        char key[32];
        char value[1024];
        avio_get_str(pb, INT_MAX, key, sizeof(key));
        avio_get_str(pb, INT_MAX, value, sizeof(value));
        av_dict_set(&s->metadata, key, value, 0);
    }

            

Reported by FlawFinder.

                  unsigned int nb_entries = avio_rb32(pb);
    for (i = 0; i < nb_entries && !avio_feof(pb); i++) {
        char key[32];
        char value[1024];
        avio_get_str(pb, INT_MAX, key, sizeof(key));
        avio_get_str(pb, INT_MAX, value, sizeof(value));
        av_dict_set(&s->metadata, key, value, 0);
    }
}

            

Reported by FlawFinder.

                          int intra_hor_ver_dist_thresh[] = { 7, 1, 0 };
            int min_dist_vert_hor = FFMIN(FFABS((int)(mode - 26U)),
                                          FFABS((int)(mode - 10U)));
            if (min_dist_vert_hor > intra_hor_ver_dist_thresh[log2_size - 3]) {
                int threshold = 1 << (BIT_DEPTH - 5);
                if (s->ps.sps->sps_strong_intra_smoothing_enable_flag && c_idx == 0 &&
                    log2_size == 5 &&
                    FFABS(top[-1]  + top[63]  - 2 * top[31])  < threshold &&
                    FFABS(left[-1] + left[63] - 2 * left[31]) < threshold) {

            

Reported by Cppcheck.

                          int intra_hor_ver_dist_thresh[] = { 7, 1, 0 };
            int min_dist_vert_hor = FFMIN(FFABS((int)(mode - 26U)),
                                          FFABS((int)(mode - 10U)));
            if (min_dist_vert_hor > intra_hor_ver_dist_thresh[log2_size - 3]) {
                int threshold = 1 << (BIT_DEPTH - 5);
                if (s->ps.sps->sps_strong_intra_smoothing_enable_flag && c_idx == 0 &&
                    log2_size == 5 &&
                    FFABS(top[-1]  + top[63]  - 2 * top[31])  < threshold &&
                    FFABS(left[-1] + left[63] - 2 * left[31]) < threshold) {

            

Reported by Cppcheck.

                      top[-1]  = left[-1];
    }
    if (cand_up)
        memcpy(top, src - stride, size * sizeof(pixel));
    if (cand_up_right) {
        memcpy(top + size, src - stride + size, size * sizeof(pixel));
        EXTEND(top + size + top_right_size, POS(size + top_right_size - 1, -1),
               size - top_right_size);
    }

            

Reported by FlawFinder.

                  if (cand_up)
        memcpy(top, src - stride, size * sizeof(pixel));
    if (cand_up_right) {
        memcpy(top + size, src - stride + size, size * sizeof(pixel));
        EXTEND(top + size + top_right_size, POS(size + top_right_size - 1, -1),
               size - top_right_size);
    }
    if (cand_left)
        for (i = 0; i < size; i++)

            

Reported by FlawFinder.

                      case 0x00: //skip
            for (y = 0; y < 4; y++)
                if (check_line(prev + y*width, pstart, pend))
                    memcpy(cur + y*width, prev + y*width, 4);
                else
                    memset(cur + y*width, 0, 4);
            break;
        case 0x40:
            t = bytestream2_get_byte(&g);

            

Reported by FlawFinder.

                              t = x + y*width;
                for (y = 0; y < 4; y++)
                    if (check_line(prev + t + y*width, pstart, pend))
                        memcpy(cur + y*width, prev + t + y*width, 4);
                    else
                        memset(cur + y*width, 0, 4);
            }
            break;
        case 0x80: // fill

            

Reported by FlawFinder.

                      vb_decode_palette(c, size);
    }

    memcpy(frame->data[1], c->pal, AVPALETTE_SIZE);
    frame->palette_has_changed = flags & VB_HAS_PALETTE;

    outptr = frame->data[0];
    srcptr = c->frame;


            

Reported by FlawFinder.

                  srcptr = c->frame;

    for (i = 0; i < avctx->height; i++) {
        memcpy(outptr, srcptr, avctx->width);
        srcptr += avctx->width;
        outptr += frame->linesize[0];
    }

    FFSWAP(uint8_t*, c->frame, c->prev_frame);

            

Reported by FlawFinder.

                      (ctb_addr_ts % s->ps.sps->ctb_width == 2 ||
         (s->ps.sps->ctb_width == 2 &&
          ctb_addr_ts % s->ps.sps->ctb_width == 0))) {
        memcpy(s->cabac_state, s->HEVClc->cabac_state, HEVC_CONTEXTS);
        if (s->ps.sps->persistent_rice_adaptation_enabled_flag) {
            memcpy(s->stat_coeff, s->HEVClc->stat_coeff, HEVC_STAT_COEFFS);
        }
    }
}

            

Reported by FlawFinder.

                        ctb_addr_ts % s->ps.sps->ctb_width == 0))) {
        memcpy(s->cabac_state, s->HEVClc->cabac_state, HEVC_CONTEXTS);
        if (s->ps.sps->persistent_rice_adaptation_enabled_flag) {
            memcpy(s->stat_coeff, s->HEVClc->stat_coeff, HEVC_STAT_COEFFS);
        }
    }
}

static void load_states(HEVCContext *s, int thread)

            

Reported by FlawFinder.

              
static void load_states(HEVCContext *s, int thread)
{
    memcpy(s->HEVClc->cabac_state, s->cabac_state, HEVC_CONTEXTS);
    if (s->ps.sps->persistent_rice_adaptation_enabled_flag) {
        const HEVCContext *prev = s->sList[(thread + s->threads_number - 1) % s->threads_number];
        memcpy(s->HEVClc->stat_coeff, prev->stat_coeff, HEVC_STAT_COEFFS);
    }
}

            

Reported by FlawFinder.

                  memcpy(s->HEVClc->cabac_state, s->cabac_state, HEVC_CONTEXTS);
    if (s->ps.sps->persistent_rice_adaptation_enabled_flag) {
        const HEVCContext *prev = s->sList[(thread + s->threads_number - 1) % s->threads_number];
        memcpy(s->HEVClc->stat_coeff, prev->stat_coeff, HEVC_STAT_COEFFS);
    }
}

static int cabac_reinit(HEVCLocalContext *lc)
{

            

Reported by FlawFinder.