Function tak_decode_frame

libavcodec/takdec.c:678–920

}

static int tak_decode_frame(AVCodecContext *avctx, AVFrame *frame,
                            int *got_frame_ptr, AVPacket *pkt)
{
    TAKDecContext *s  = avctx->priv_data;
    GetBitContext *gb = &s->gb;
    int chan, i, ret, hsize;

    if (pkt->size < TAK_MIN_FRAME_HEADER_BYTES)
        return AVERROR_INVALIDDATA;

    if ((ret = init_get_bits8(gb, pkt->data, pkt->size)) < 0)
        return ret;

    if ((ret = ff_tak_decode_frame_header(avctx, gb, &s->ti, 0)) < 0)
        return ret;

    hsize = get_bits_count(gb) / 8;
    if (avctx->err_recognition & (AV_EF_CRCCHECK|AV_EF_COMPLIANT)) {
        if (ff_tak_check_crc(pkt->data, hsize)) {
            av_log(avctx, AV_LOG_ERROR, "CRC error\n");
            if (avctx->err_recognition & AV_EF_EXPLODE)
                return AVERROR_INVALIDDATA;
        }
    }

    if (s->ti.codec != TAK_CODEC_MONO_STEREO &&
        s->ti.codec != TAK_CODEC_MULTICHANNEL) {
        avpriv_report_missing_feature(avctx, "TAK codec type %d", s->ti.codec);
        return AVERROR_PATCHWELCOME;
    }
    if (s->ti.data_type) {
        av_log(avctx, AV_LOG_ERROR,
               "unsupported data type: %d\n", s->ti.data_type);
        return AVERROR_INVALIDDATA;
    }
    if (s->ti.codec == TAK_CODEC_MONO_STEREO && s->ti.channels > 2) {
        av_log(avctx, AV_LOG_ERROR,
               "invalid number of channels: %d\n", s->ti.channels);
        return AVERROR_INVALIDDATA;
    }
    if (s->ti.channels > 6) {
        av_log(avctx, AV_LOG_ERROR,
               "unsupported number of channels: %d\n", s->ti.channels);
        return AVERROR_INVALIDDATA;
    }

    if (s->ti.frame_samples <= 0) {
        av_log(avctx, AV_LOG_ERROR, "unsupported/invalid number of samples\n");
        return AVERROR_INVALIDDATA;
    }

    avctx->bits_per_raw_sample = s->ti.bps;
    if ((ret = set_bps_params(avctx)) < 0)
        return ret;
    if (s->ti.sample_rate != avctx->sample_rate) {
        avctx->sample_rate = s->ti.sample_rate;
        set_sample_rate_params(avctx);
    }