static int libgsm_decode_frame(AVCodecContext *avctx,

                               void *data, int *data_size,

                               AVPacket *avpkt) {

    uint8_t *buf = avpkt->data;

    int buf_size = avpkt->size;

    int out_size = avctx->frame_size * av_get_bytes_per_sample(avctx->sample_fmt);



    if (*data_size < out_size) {

        av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");

        return AVERROR(EINVAL);

    }



    if (buf_size < avctx->block_align) {

        av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");

        return AVERROR_INVALIDDATA;

    }



    switch(avctx->codec_id) {

    case CODEC_ID_GSM:

        if(gsm_decode(avctx->priv_data,buf,data)) return -1;

        break;

    case CODEC_ID_GSM_MS:

        if(gsm_decode(avctx->priv_data,buf,data) ||

           gsm_decode(avctx->priv_data,buf+33,((int16_t*)data)+GSM_FRAME_SIZE)) return -1;

    }



    *data_size = out_size;

    return avctx->block_align;

}

static int libgsm_decode_frame(AVCodecContext *avctx,

                               void *data, int *data_size,

                               AVPacket *avpkt) {

    uint8_t *buf = avpkt->data;

    int buf_size = avpkt->size;

    int out_size = avctx->frame_size * av_get_bytes_per_sample(avctx->sample_fmt);



    if (*data_size < out_size) {

        av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");

        return AVERROR(EINVAL);

    }



    if (buf_size < avctx->block_align) {

        av_log(avctx, AV_LOG_ERROR, "Packet is too small\n");

        return AVERROR_INVALIDDATA;

    }



    switch(avctx->codec_id) {

    case CODEC_ID_GSM:

        if(gsm_decode(avctx->priv_data,buf,data)) return -1;

        break;

    case CODEC_ID_GSM_MS:

        if(gsm_decode(avctx->priv_data,buf,data) ||

           gsm_decode(avctx->priv_data,buf+33,((int16_t*)data)+GSM_FRAME_SIZE)) return -1;

    }



    *data_size = out_size;

    return avctx->block_align;

}

static int FUNC_0(AVCodecContext *VAR_0,

                               void *VAR_1, int *VAR_2,

                               AVPacket *VAR_3) {

    uint8_t *buf = VAR_3->VAR_1;

    int VAR_4 = VAR_3->size;

    int VAR_5 = VAR_0->frame_size * av_get_bytes_per_sample(VAR_0->sample_fmt);



    if (*VAR_2 < VAR_5) {

        av_log(VAR_0, AV_LOG_ERROR, "Output buffer is too small\n");

        return AVERROR(EINVAL);

    }



    if (VAR_4 < VAR_0->block_align) {

        av_log(VAR_0, AV_LOG_ERROR, "Packet is too small\n");

        return AVERROR_INVALIDDATA;

    }



    switch(VAR_0->codec_id) {

    case CODEC_ID_GSM:

        if(gsm_decode(VAR_0->priv_data,buf,VAR_1)) return -1;

        break;

    case CODEC_ID_GSM_MS:

        if(gsm_decode(VAR_0->priv_data,buf,VAR_1) ||

           gsm_decode(VAR_0->priv_data,buf+33,((int16_t*)VAR_1)+GSM_FRAME_SIZE)) return -1;

    }



    *VAR_2 = VAR_5;

    return VAR_0->block_align;

}

static int FUNC_0(AVCodecContext *VAR_0,
void *VAR_1, int *VAR_2,
AVPacket *VAR_3) { uint8_t *buf = VAR_3->VAR_1; int VAR_4 = VAR_3->size; int VAR_5 = VAR_0->frame_size * av_get_bytes_per_sample(VAR_0->sample_fmt); if (*VAR_2 < VAR_5) { av_log(VAR_0, AV_LOG_ERROR, "Output buffer is too small\n"); return AVERROR(EINVAL); } if (VAR_4 < VAR_0->block_align) { av_log(VAR_0, AV_LOG_ERROR, "Packet is too small\n"); return AVERROR_INVALIDDATA; } switch(VAR_0->codec_id) { case CODEC_ID_GSM:
if(gsm_decode(VAR_0->priv_data,buf,VAR_1)) return -1; break; case CODEC_ID_GSM_MS:
if(gsm_decode(VAR_0->priv_data,buf,VAR_1) ||
gsm_decode(VAR_0->priv_data,buf+33,((int16_t*)VAR_1)+GSM_FRAME_SIZE)) return -1; } *VAR_2 = VAR_5; return VAR_0->block_align; }