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gst/level/gstlevel.c: Also support 32bit (e.g. whe having it after 'mad'). Add more notes about whats needed for libo...

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Original commit message from CVS:
* gst/level/gstlevel.c:
Also support 32bit (e.g. whe having it after 'mad'). Add more notes
about whats needed for liboil acceleration. Simplify docs a bit.
This commit is contained in:
Stefan Kost 2008-05-08 10:20:52 +00:00
parent 1d00afde97
commit a0369011e7
2 changed files with 36 additions and 12 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
2008-05-08 Stefan Kost <ensonic@users.sf.net>
* gst/level/gstlevel.c:
Also support 32bit (e.g. whe having it after 'mad'). Add more notes
about whats needed for liboil acceleration. Simplify docs a bit.
2008-05-08 Sebastian Dröge <slomo@circular-chaos.org>
Patch by: Sjoerd Simons <sjoerd at luon dot net>

40
gst/level/gstlevel.c
View file

@ -21,15 +21,14 @@
/**
* SECTION:element-level
* @short_description: audio level analyzer
*
* <refsect2>
* <para>
* Level analyses incoming audio buffers and, if the
* <link linkend="GstLevel--message">message property</link> is #TRUE,
* generates an element message named
* Level analyses incoming audio buffers and, if the #GstLevel:message property
* is #TRUE, generates an element message named
* <classname>&quot;level&quot;</classname>:
* after each interval of time given by the
* <link linkend="GstLevel--interval">interval property</link>.
* after each interval of time given by the #GstLevel:interval property.
* The message's structure contains four fields:
* <itemizedlist>
* <listitem>
@ -82,6 +81,8 @@
#include <math.h>
#include <gst/gst.h>
#include <gst/audio/audio.h>
/*#include <liboil/liboil.h>*/
#include "gstlevel.h"
GST_DEBUG_CATEGORY_STATIC (level_debug);
@ -100,8 +101,8 @@ static GstStaticPadTemplate sink_template_factory =
"rate = (int) [ 1, MAX ], "
"channels = (int) [ 1, MAX ], "
"endianness = (int) BYTE_ORDER, "
"width = (int) { 8, 16 }, "
"depth = (int) { 8, 16 }, "
"width = (int) { 8, 16, 32 }, "
"depth = (int) { 8, 16, 32 }, "
"signed = (boolean) true; "
"audio/x-raw-float, "
"rate = (int) [ 1, MAX ], "
@ -117,8 +118,8 @@ static GstStaticPadTemplate src_template_factory =
"rate = (int) [ 1, MAX ], "
"channels = (int) [ 1, MAX ], "
"endianness = (int) BYTE_ORDER, "
"width = (int) { 8, 16 }, "
"depth = (int) { 8, 16 }, "
"width = (int) { 8, 16, 32 }, "
"depth = (int) { 8, 16, 32 }, "
"signed = (boolean) true; "
"audio/x-raw-float, "
"rate = (int) [ 1, MAX ], "
@ -324,9 +325,9 @@ gst_level_calculate_##TYPE (gpointer data, guint num, guint channels, \
/* *NCS = 0.0; Normalized Cumulative Square */ \
/* *NPS = 0.0; Normalized Peask Square */ \
\
normalizer = (gdouble) (1 << (RESOLUTION * 2)); \
normalizer = (gdouble) (G_GINT64_CONSTANT(1) << (RESOLUTION * 2)); \
\
/* oil_squaresum_f64(&squaresum,in,num); */ \
/* oil_squaresum_shifted_s16(&squaresum,in,num); */ \
for (j = 0; j < num; j += channels) \
{ \
square = ((gdouble) in[j]) * in[j]; \
@ -338,6 +339,7 @@ gst_level_calculate_##TYPE (gpointer data, guint num, guint channels, \
*NPS = peaksquare / normalizer; \
}
DEFINE_INT_LEVEL_CALCULATOR (gint32, 31);
DEFINE_INT_LEVEL_CALCULATOR (gint16, 15);
DEFINE_INT_LEVEL_CALCULATOR (gint8, 7);
@ -370,6 +372,17 @@ gst_level_calculate_##TYPE (gpointer data, guint num, guint channels, \
DEFINE_FLOAT_LEVEL_CALCULATOR (gfloat);
DEFINE_FLOAT_LEVEL_CALCULATOR (gdouble);
/* we would need stride to deinterleave also
static void inline
gst_level_calculate_gdouble (gpointer data, guint num, guint channels,
gdouble *NCS, gdouble *NPS)
{
oil_squaresum_f64(NCS,(gdouble *)data,num);
*NPS = 0.0;
}
*/
static gint
structure_get_int (GstStructure * structure, const gchar * field)
{
@ -406,6 +419,9 @@ gst_level_set_caps (GstBaseTransform * trans, GstCaps * in, GstCaps * out)
case 16:
filter->process = gst_level_calculate_gint16;
break;
case 32:
filter->process = gst_level_calculate_gint32;
break;
}
} else if (strcmp (mimetype, "audio/x-raw-float") == 0) {
GST_DEBUG_OBJECT (filter, "use float, %u", filter->width);
@ -649,6 +665,8 @@ gst_level_transform_ip (GstBaseTransform * trans, GstBuffer * in)
static gboolean
plugin_init (GstPlugin * plugin)
{
/*oil_init (); */
return gst_element_register (plugin, "level", GST_RANK_NONE, GST_TYPE_LEVEL);
}