Function ftr_decode_frame

libavcodec/ftr.c:74–176

}

static int ftr_decode_frame(AVCodecContext *avctx, AVFrame *frame,
                            int *got_frame, AVPacket *avpkt)
{
    FTRContext *s = avctx->priv_data;
    GetBitContext gb;
    int ret, ch_offset = 0;

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

    frame->nb_samples = 0;

    for (int i = 0; i < s->nb_context; i++) {
        AVCodecContext *codec_avctx = s->aac_avctx[i];
        GetBitContext gb2 = gb;
        AACADTSHeaderInfo hdr_info;
        int size;

        if (get_bits_left(&gb) < 64)
            return AVERROR_INVALIDDATA;

        memset(&hdr_info, 0, sizeof(hdr_info));

        size = ff_adts_header_parse(&gb2, &hdr_info);
        if (size <= 0 || size * 8 > get_bits_left(&gb))
            return AVERROR_INVALIDDATA;

        if (size > s->packet->size) {
            ret = av_grow_packet(s->packet, size - s->packet->size);
            if (ret < 0)
                return ret;
        }

        ret = av_packet_make_writable(s->packet);
        if (ret < 0)
            return ret;

        memcpy(s->packet->data, avpkt->data + (get_bits_count(&gb) >> 3), size);
        s->packet->size = size;

        if (size > 12) {
            uint8_t *buf = s->packet->data;

            if (buf[3] & 0x20) {
                int tmp = buf[8];
                buf[ 9] = ~buf[9];
                buf[11] = ~buf[11];
                buf[12] = ~buf[12];
                buf[ 8] = ~buf[10];
                buf[10] = ~tmp;
            }
        }

        ret = avcodec_send_packet(codec_avctx, s->packet);
        if (ret < 0) {
            av_log(avctx, AV_LOG_ERROR, "Error submitting a packet for decoding\n");
            return ret;