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use new dparams api. also has a slight optimisation so that CLAMP is only used if gain is greater than 1.0

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Original commit message from CVS:
use new dparams api. also has a slight optimisation so that CLAMP is only used if gain is greater than 1.0
This commit is contained in:
Steve Baker 2002-05-29 18:56:23 +00:00
parent 6ad042fada
commit 0e02813372
1 changed files with 25 additions and 10 deletions
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35
gst/volume/gstvolume.c
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@ -136,6 +136,7 @@ volume_connect (GstPad *pad, GstCaps *caps)
{
GstVolume *filter;
GstPad *otherpad;
gint rate;
filter = GST_VOLUME (gst_pad_get_parent (pad));
g_return_val_if_fail (filter != NULL, GST_PAD_CONNECT_REFUSED);
@ -146,6 +147,9 @@ volume_connect (GstPad *pad, GstCaps *caps)
if (!volume_parse_caps (filter, caps) || !gst_pad_try_set_caps (otherpad, caps))
return GST_PAD_CONNECT_REFUSED;
if (gst_caps_get_int (caps, "rate", &rate)){
gst_dpman_set_rate(filter->dpman, rate);
}
return GST_PAD_CONNECT_OK;
}
@ -263,7 +267,7 @@ volume_chain_float (GstPad *pad, GstBuffer *buf)
GstVolume *filter;
GstBuffer *out_buf;
gfloat *data;
gint i, sample_countdown, num_samples;
gint i, num_samples;
g_return_if_fail(GST_IS_PAD(pad));
g_return_if_fail(buf != NULL);
@ -281,10 +285,10 @@ volume_chain_float (GstPad *pad, GstBuffer *buf)
data = (gfloat *)GST_BUFFER_DATA(out_buf);
num_samples = GST_BUFFER_SIZE(out_buf)/sizeof(gfloat);
sample_countdown = GST_DPMAN_PREPROCESS(filter->dpman, num_samples, GST_BUFFER_TIMESTAMP(out_buf));
GST_DPMAN_PREPROCESS(filter->dpman, num_samples, GST_BUFFER_TIMESTAMP(out_buf));
i = 0;
while(GST_DPMAN_PROCESS_COUNTDOWN(filter->dpman, sample_countdown, i)) {
while(GST_DPMAN_PROCESS(filter->dpman, i)) {
data[i++] *= filter->real_vol_f;
}
@ -298,7 +302,7 @@ volume_chain_int16 (GstPad *pad, GstBuffer *buf)
GstVolume *filter;
GstBuffer *out_buf;
gint16 *data;
gint i, sample_countdown, num_samples;
gint i, num_samples;
g_return_if_fail(GST_IS_PAD(pad));
g_return_if_fail(buf != NULL);
@ -316,14 +320,25 @@ volume_chain_int16 (GstPad *pad, GstBuffer *buf)
data = (gint16 *)GST_BUFFER_DATA(out_buf);
num_samples = GST_BUFFER_SIZE(out_buf)/sizeof(gint16);
sample_countdown = GST_DPMAN_PREPROCESS(filter->dpman, num_samples, GST_BUFFER_TIMESTAMP(out_buf));
GST_DPMAN_PREPROCESS(filter->dpman, num_samples, GST_BUFFER_TIMESTAMP(out_buf));
i = 0;
while(GST_DPMAN_PROCESS_COUNTDOWN(filter->dpman, sample_countdown, i)) {
data[i] = (gint16)(filter->real_vol_i * (gint)data[i] / 8192);
i++;
while(GST_DPMAN_PROCESS(filter->dpman, i)) {
/* only clamp if the gain is greater than 1.0 */
if (filter->real_vol_i > 8192){
while (i < GST_DPMAN_NEXT_UPDATE_FRAME(filter->dpman)){
data[i] = (gint16)CLAMP(filter->real_vol_i * (gint)data[i] / 8192, -32768, 32767);
i++;
}
}
else {
while (i < GST_DPMAN_NEXT_UPDATE_FRAME(filter->dpman)){
data[i] = (gint16)(filter->real_vol_i * (gint)data[i] / 8192);
i++;
}
}
}
gst_pad_push(filter->srcpad,out_buf);
}