Exemple #1
0
static int aacd_opencoremp3_sync( AACDInfo *info, unsigned char *buffer, int buffer_size )
{
    AACDOpenCoreMP3 *oc = (AACDOpenCoreMP3*) info->ext;

    if (oc->pExt->pOutputBuffer)
    {
        ERROR_CODE err = pvmp3_frame_synch( oc->pExt, oc->pMem );

        return err != NO_DECODING_ERROR ? -1 : 0;
    }

    return 0;
}
Exemple #2
0
static long aacd_opencoremp3_start( AACDInfo *info, unsigned char *buffer, unsigned long buffer_size)
{
    AACD_TRACE( "start() buffer=%x size=%d", (*(unsigned long*)buffer), buffer_size );

    AACDOpenCoreMP3 *oc = (AACDOpenCoreMP3*) info->ext;
    tPVMP3DecoderExternal *pExt = oc->pExt;

    // prepare the first samples buffer:
    //pExt->pOutputBuffer             = malloc(4096 * sizeof(int16_t));
    pExt->pOutputBuffer             = aacd_prepare_samples( info, 4096 );
    pExt->outputFrameSize           = 4096;

    pExt->pInputBuffer              = buffer;
    pExt->inputBufferMaxLength      = buffer_size;
    pExt->inputBufferCurrentLength  = buffer_size;
    pExt->inputBufferUsedLength     = 0;

    pExt->crcEnabled                = 0;
    pExt->equalizerType             = flat;
    pvmp3_InitDecoder( oc->pExt, oc->pMem );

    int32_t status;
    int frameDecoded = 0;
    int attempts = 16;
    int totalConsumed = 0;
    pExt->outputFrameSize           = 0;

    /* pre-init search adts sync */
    while (!frameDecoded && attempts--) {
        pExt->pInputBuffer              = buffer;
        pExt->inputBufferMaxLength      = buffer_size;
        pExt->inputBufferCurrentLength  = buffer_size;
        pExt->inputBufferUsedLength     = 0;
        pExt->outputFrameSize           = 4096;

        status = pvmp3_framedecoder(pExt, oc->pMem);
        AACD_DEBUG( "start() Status[0]: %d - consumed %d bytes", status, pExt->inputBufferUsedLength );

        totalConsumed += pExt->inputBufferUsedLength;

        if (status != NO_DECODING_ERROR) {
            AACD_ERROR( "start() frame decode error=%d", status );

            if (!pExt->inputBufferUsedLength) {
                AACD_ERROR( "start() first frame cannot be decoded - trying to sync again" );

                int move = buffer_size < 2048 ? (buffer_size >> 1) : 1024;
                buffer += move;
                buffer_size -= move;
                totalConsumed += move;

                pExt->pInputBuffer              = buffer;
                pExt->inputBufferMaxLength      = buffer_size;
                pExt->inputBufferCurrentLength  = buffer_size;

                ERROR_CODE err = pvmp3_frame_synch( oc->pExt, oc->pMem );

                if (err == SYNCH_LOST_ERROR) {
                    AACD_ERROR( "start() cannot re-sync the stream after next %d bytes, status=%d", move, err );
                }
                else if (err != NO_DECODING_ERROR) {
                    AACD_ERROR( "start() cannot sync the stream status=%d", err );
                    break;
                }
                else {
                    totalConsumed += pExt->inputBufferUsedLength;
                    AACD_INFO( "start() sync was successful - used bytes=%d", totalConsumed );
                }
            }
            buffer -= pExt->inputBufferUsedLength;
            buffer_size -= pExt->inputBufferUsedLength;
        }