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spectrum: code cleanup for copying data to ring-buffer

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Rename fp to is_float and restructure if-else part for handling the different formats.
This commit is contained in:
Stefan Kost 2011-03-09 12:20:11 +02:00
parent 787aca6898
commit b60675acaf
1 changed files with 38 additions and 31 deletions
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69
gst/spectrum/gstspectrum.c
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@ -601,7 +601,8 @@ gst_spectrum_transform_ip (GstBaseTransform * trans, GstBuffer * buffer)
gfloat max_value =
(1UL << (GST_AUDIO_FILTER (spectrum)->format.depth - 1)) - 1;
guint width = GST_AUDIO_FILTER (spectrum)->format.width / 8;
gboolean fp = (GST_AUDIO_FILTER (spectrum)->format.type == GST_BUFTYPE_FLOAT);
gboolean is_float =
(GST_AUDIO_FILTER (spectrum)->format.type == GST_BUFTYPE_FLOAT);
guint bands = spectrum->bands;
guint nfft = 2 * bands - 2;
guint input_pos;
@ -650,38 +651,44 @@ gst_spectrum_transform_ip (GstBaseTransform * trans, GstBuffer * buffer)
* take the average of all channels
*/
input[input_pos] = 0.0;
if (fp && width == 4) {
gfloat *in = (gfloat *) data;
for (i = 0; i < channels; i++)
input[input_pos] += in[i];
} else if (fp && width == 8) {
gdouble *in = (gdouble *) data;
for (i = 0; i < channels; i++)
input[input_pos] += in[i];
} else if (!fp && width == 4) {
gint32 *in = (gint32 *) data;
for (i = 0; i < channels; i++)
/* max_value will be 0 when depth is 1, interpret -1 and 0
* as -1 and +1 if that's the case.
*/
input[input_pos] += max_value ? in[i] / max_value : in[i] * 2 + 1;
} else if (!fp && width == 3) {
for (i = 0; i < channels; i++) {
#if G_BYTE_ORDER == G_BIG_ENDIAN
gint32 value = GST_READ_UINT24_BE (data);
#else
gint32 value = GST_READ_UINT24_LE (data);
#endif
if (value & 0x00800000)
value |= 0xff000000;
input[input_pos] += max_value ? value / max_value : value * 2 + 1;
if (is_float) {
if (width == 4) {
gfloat *in = (gfloat *) data;
for (i = 0; i < channels; i++)
input[input_pos] += in[i];
} else if (width == 8) {
gdouble *in = (gdouble *) data;
for (i = 0; i < channels; i++)
input[input_pos] += in[i];
} else {
g_assert_not_reached ();
}
} else if (!fp && width == 2) {
gint16 *in = (gint16 *) data;
for (i = 0; i < channels; i++)
input[input_pos] += max_value ? in[i] / max_value : in[i] * 2 + 1;
} else {
g_assert_not_reached ();
if (width == 4) {
gint32 *in = (gint32 *) data;
for (i = 0; i < channels; i++)
/* max_value will be 0 when depth is 1, interpret -1 and 0
* as -1 and +1 if that's the case.
*/
input[input_pos] += max_value ? in[i] / max_value : in[i] * 2 + 1;
} else if (width == 3) {
for (i = 0; i < channels; i++) {
#if G_BYTE_ORDER == G_BIG_ENDIAN
gint32 value = GST_READ_UINT24_BE (data);
#else
gint32 value = GST_READ_UINT24_LE (data);
#endif
if (value & 0x00800000)
value |= 0xff000000;
input[input_pos] += max_value ? value / max_value : value * 2 + 1;
}
} else if (width == 2) {
gint16 *in = (gint16 *) data;
for (i = 0; i < channels; i++)
input[input_pos] += max_value ? in[i] / max_value : in[i] * 2 + 1;
} else {
g_assert_not_reached ();
}
}
input[input_pos] /= channels;