void InitialAC3()
{
error_flag = buffer_size = 0;
ZeroMemory(&syncinfo, sizeof(syncinfo));
ZeroMemory(&bsi, sizeof(bsi));
ZeroMemory(&audblk, sizeof(audblk));
drc_init();
imdct_init();
exponent_init();
mantissa_init();
srand(0);
}
//en : 0-close when vbi
//en : 1- open when vbi
//en : 2-close immediately
__s32 drc_enable(__u32 sel, __u32 en)
{
switch(en) {
case 0:
if(g_iep_status[sel] & DRC_USED) {
g_iep_status[sel] |= DRC_NEED_CLOSED;
} else {
DE_INF("[iep_drc.c]DRC hasn't opened yet !\n");
}
break;
case 1:
if(g_iep_status[sel] & DRC_REQUIRED) {
//if((gdisp.screen[sel].output_type == DISP_OUTPUT_TYPE_LCD) && (gdisp.screen[sel].status & LCD_ON))
//{
if(!(g_iep_status[sel] & DRC_USED)) {
drc_init(sel);
g_iep_status[sel] |= DRC_USED;
DE_INF("[iep_drc.c]DRC open now!\n");
} else {
DE_INF("[iep_drc.c]DRC has already opened before !\n");
}
//}
//else
//{
// DE_INF("[iep_drc.c]Will OPEN DRC when output to LCD !\n");
//}
} else {
DE_INF("[iep_drc.c]Run DISP_CMD_DRC_ON will open DRC !\n");
}
break;
case 2:
if(g_iep_status[sel] & DRC_USED) {
drc_close_proc(sel);
} else {
DE_INF("[iep_drc.c]DRC hasn't opened yet !\n");
}
break;
}
return DIS_SUCCESS;
}
static void drc_run(struct dsp_module *module, unsigned long sample_count)
{
struct drc_data *data = (struct drc_data *) module->data;
if (!data->drc) {
int i;
float nyquist = data->sample_rate / 2;
struct drc *drc = drc_new(data->sample_rate);
data->drc = drc;
drc->emphasis_disabled = (int) *data->ports[4];
for (i = 0; i < 3; i++) {
int k = 5 + i * 8;
float f = *data->ports[k];
float enable = *data->ports[k+1];
float threshold = *data->ports[k+2];
float knee = *data->ports[k+3];
float ratio = *data->ports[k+4];
float attack = *data->ports[k+5];
float release = *data->ports[k+6];
float boost = *data->ports[k+7];
drc_set_param(drc, i, PARAM_CROSSOVER_LOWER_FREQ,
f / nyquist);
drc_set_param(drc, i, PARAM_ENABLED, enable);
drc_set_param(drc, i, PARAM_THRESHOLD, threshold);
drc_set_param(drc, i, PARAM_KNEE, knee);
drc_set_param(drc, i, PARAM_RATIO, ratio);
drc_set_param(drc, i, PARAM_ATTACK, attack);
drc_set_param(drc, i, PARAM_RELEASE, release);
drc_set_param(drc, i, PARAM_POST_GAIN, boost);
}
drc_init(drc);
}
if (data->ports[0] != data->ports[2])
memcpy(data->ports[2], data->ports[0],
sizeof(float) * sample_count);
if (data->ports[1] != data->ports[3])
memcpy(data->ports[3], data->ports[1],
sizeof(float) * sample_count);
drc_process(data->drc, &data->ports[2], (int) sample_count);
}
