bool AmdtpTransmitStreamProcessor::prepareChild()
{
debugOutput ( DEBUG_LEVEL_VERBOSE, "Preparing (%p)...\n", this );
m_syt_interval = getSytInterval();
m_fdf = getFDF();
debugOutput ( DEBUG_LEVEL_VERBOSE, " SYT interval / FDF : %d / %d\n", m_syt_interval, m_fdf );
#if AMDTP_ALLOW_PAYLOAD_IN_NODATA_XMIT
debugOutput ( DEBUG_LEVEL_VERBOSE, " Send payload in No-Data packets: %s \n", m_send_nodata_payload?"Yes":"No" );
#endif
debugOutput ( DEBUG_LEVEL_VERBOSE, " Max early transmit cycles : %d\n", m_max_cycles_to_transmit_early );
debugOutput ( DEBUG_LEVEL_VERBOSE, " Transfer delay : %d\n", m_transmit_transfer_delay );
debugOutput ( DEBUG_LEVEL_VERBOSE, " Min cycles before presentation : %d\n", m_min_cycles_before_presentation );
iec61883_cip_init (
&m_cip_status,
IEC61883_FMT_AMDTP,
m_fdf,
m_StreamProcessorManager.getNominalRate(),
m_dimension,
m_syt_interval );
if (!initPortCache()) {
debugError("Could not init port cache\n");
return false;
}
return true;
}
iec61883_dv_t
iec61883_dv_xmit_init (raw1394handle_t handle,
int is_pal,
iec61883_dv_xmit_t get_data,
void *callback_data)
{
/* DV is composed of DIF blocks, each 480 bytes */
int dbs = DIF_BLOCK_SIZE / sizeof (quadlet_t);
int fdf = is_pal ? 0x80 : 0x00;
int syt_interval = is_pal ? 300 : 250;
int rate = syt_interval * (is_pal ? 25 : 30000.0/1001.0);
struct iec61883_dv *dv;
assert (handle != NULL);
dv = malloc (sizeof (struct iec61883_dv));
if (!dv) {
errno = ENOMEM;
return NULL;
}
dv->channel = -1;
dv->handle = handle;
dv->put_data = NULL;
dv->get_data = get_data;
dv->callback_data = callback_data;
dv->buffer_packets = 1000;
dv->prebuffer_packets = 1000;
dv->irq_interval = 250;
dv->synch = 0;
dv->speed = RAW1394_ISO_SPEED_100;
iec61883_cip_init (&dv->cip, IEC61883_FMT_DV, fdf, rate, dbs, syt_interval);
iec61883_cip_set_transmission_mode (&dv->cip, IEC61883_MODE_NON_BLOCKING);
raw1394_set_userdata (handle, dv);
return dv;
}
