mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-19 14:56:36 +00:00
Code Issues 1 Projects Releases Wiki Activity

+ alterations to the adder for changed float caps

Browse source 
Original commit message from CVS:
+ alterations to the adder for changed float caps
This commit is contained in:
Leif Johnson 2003-07-19 23:16:25 +00:00
parent 2ad6bd23cf
commit e6f278e065
2 changed files with 95 additions and 92 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

127
gst/adder/gstadder.c
View file

@ -36,7 +36,7 @@ GstElementDetails adder_details = {
"Adder",
"Filter/Audio",
"LGPL",
"N-to-1 audio adder/mixer",
"Add N audio channels together",
VERSION,
"Thomas <thomas@apestaart.org>",
"(C) 2001, 2002",
@ -61,7 +61,7 @@ GST_PAD_TEMPLATE_FACTORY (gst_adder_src_template_factory,
gst_caps_new ("int_src", "audio/x-raw-int",
GST_AUDIO_INT_PAD_TEMPLATE_PROPS),
gst_caps_new ("float_src", "audio/x-raw-float",
GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS)
GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_PROPS)
);
GST_PAD_TEMPLATE_FACTORY (gst_adder_sink_template_factory,
@ -71,7 +71,7 @@ GST_PAD_TEMPLATE_FACTORY (gst_adder_sink_template_factory,
gst_caps_new ("int_sink", "audio/x-raw-int",
GST_AUDIO_INT_PAD_TEMPLATE_PROPS),
gst_caps_new ("float_sink", "audio/x-raw-float",
GST_AUDIO_FLOAT_MONO_PAD_TEMPLATE_PROPS)
GST_AUDIO_FLOAT_STANDARD_PAD_TEMPLATE_PROPS)
);
static void gst_adder_class_init (GstAdderClass *klass);
@ -117,8 +117,7 @@ gst_adder_parse_caps (GstAdder *adder, GstCaps *caps)
mimetype = gst_caps_get_mime (caps);
if (adder->format == GST_ADDER_FORMAT_UNSET) {
/* the caps haven't been set yet at all,
* so we need to go ahead and set all
/* the caps haven't been set yet at all, so we need to go ahead and set all
the relevant values. */
if (strcmp (mimetype, "audio/x-raw-int") == 0) {
GST_DEBUG ("parse_caps sets adder to format int");
@ -132,14 +131,13 @@ gst_adder_parse_caps (GstAdder *adder, GstCaps *caps)
} else if (strcmp (mimetype, "audio/x-raw-float") == 0) {
GST_DEBUG ("parse_caps sets adder to format float");
adder->format = GST_ADDER_FORMAT_FLOAT;
gst_caps_get_float (caps, "intercept", &adder->intercept);
gst_caps_get_float (caps, "slope", &adder->slope);
gst_caps_get_int (caps, "width", &adder->width);
gst_caps_get_int (caps, "channels", &adder->channels);
gst_caps_get_int (caps, "rate", &adder->rate);
gst_caps_get_int (caps, "rate", &adder->rate);
}
} else {
/* otherwise, a previously-linked pad has set all the values. we should
barf if some of the attempted new values don't match. */
/* otherwise, a previously-linked pad has set all the values. we should barf
if some of the attempted new values don't match. */
if (strcmp (mimetype, "audio/x-raw-int") == 0) {
gint width, channels, rate;
gboolean is_signed;
@ -171,21 +169,20 @@ gst_adder_parse_caps (GstAdder *adder, GstCaps *caps)
return FALSE;
}
if (adder->is_signed != is_signed) {
gst_element_error (el,
"can't link %ssigned pad with %ssigned adder",
gst_element_error (el, "can't link %ssigned pad with %ssigned adder",
adder->is_signed ? "" : "un",
is_signed ? "" : "un");
return FALSE;
}
} else if (strcmp (mimetype, "audio/x-raw-float") == 0) {
gint channels, rate;
gint channels, rate, width;
gst_caps_get_int (caps, "channels", &channels);
gst_caps_get_int (caps, "rate", &rate);
gst_caps_get_int (caps, "width", &width);
gst_caps_get_int (caps, "channels", &channels);
gst_caps_get_int (caps, "rate", &rate);
if (adder->format != GST_ADDER_FORMAT_FLOAT) {
gst_element_error (el,
"can't link a non-float pad to a float adder");
gst_element_error (el, "can't link a non-float pad to a float adder");
return FALSE;
}
if (adder->channels != channels) {
@ -199,6 +196,11 @@ gst_adder_parse_caps (GstAdder *adder, GstCaps *caps)
rate, adder->rate);
return FALSE;
}
if (adder->width != width) {
gst_element_error (el, "can't link %d bit float pad with %d bit adder",
width, adder->width);
return FALSE;
}
}
}
return TRUE;
@ -228,11 +230,10 @@ gst_adder_link (GstPad *pad, GstCaps *caps)
p = (GstPad *) sinkpads->data;
if (p != pad && p != adder->srcpad) {
if (gst_pad_try_set_caps (p, caps) <= 0) {
GST_DEBUG (
"caps mismatch; unlinking and removing pad %s:%s "
GST_DEBUG ("caps mismatch; unlinking and removing pad %s:%s "
"(peer %s:%s)",
GST_DEBUG_PAD_NAME (p),
GST_DEBUG_PAD_NAME (GST_PAD_PEER (p)));
GST_DEBUG_PAD_NAME (GST_PAD_PEER (p)));
gst_pad_unlink (GST_PAD (GST_PAD_PEER (p)), p);
remove = g_list_prepend (remove, p);
}
@ -241,7 +242,7 @@ gst_adder_link (GstPad *pad, GstCaps *caps)
}
while (remove) {
gst_element_remove_pad (GST_ELEMENT (adder),
GST_PAD_CAST (remove->data));
GST_PAD_CAST (remove->data));
restart:
channels = adder->input_channels;
while (channels) {
@ -249,8 +250,8 @@ gst_adder_link (GstPad *pad, GstCaps *caps)
channel = (GstAdderInputChannel*) channels->data;
if (channel->sinkpad == GST_PAD_CAST (remove->data)) {
gst_bytestream_destroy (channel->bytestream);
adder->input_channels = g_slist_remove_link (adder->input_channels,
channels);
adder->input_channels =
g_slist_remove_link (adder->input_channels, channels);
adder->numsinkpads--;
goto restart;
}
@ -406,8 +407,7 @@ gst_adder_loop (GstElement *element)
buf_out = gst_buffer_new_from_pool (adder->bufpool, 0, 0);
if (buf_out == NULL) {
gst_element_error (GST_ELEMENT (adder),
"could not get new output buffer !\n");
gst_element_error (GST_ELEMENT (adder), "could not get new output buffer");
return;
}
@ -436,14 +436,12 @@ gst_adder_loop (GstElement *element)
continue;
}
/* Get data from the bytestream of each input channel.
* We need to check for events before passing on the data
* to the output buffer. */
/* Get data from the bytestream of each input channel. We need to check for
events before passing on the data to the output buffer. */
got_bytes = gst_bytestream_peek_bytes (input->bytestream, &raw_in,
GST_BUFFER_SIZE (buf_out));
/* FIXME we should do something with the data if
* got_bytes is more than zero */
/* FIXME we should do something with the data if got_bytes > 0 */
if (got_bytes < GST_BUFFER_SIZE(buf_out)) {
GstEvent *event = NULL;
guint32 waiting;
@ -455,15 +453,15 @@ gst_adder_loop (GstElement *element)
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
/* if we get an EOS event from one of our sink pads, we assume that
pad's finished handling data. just skip this pad */
pad's finished handling data. just skip this pad. */
GST_DEBUG ("got an EOS event");
gst_event_unref (event);
continue;
case GST_EVENT_INTERRUPT:
gst_event_unref (event);
GST_DEBUG ("got an interrupt event");
/* we have to call interrupt here, the scheduler will switch out this
* element ASAP or returns TRUE if we need to exit the loop */
/* we have to call interrupt here, the scheduler will switch out
this element ASAP or returns TRUE if we need to exit the loop */
if (gst_element_interrupt (GST_ELEMENT (adder))) {
gst_buffer_unref (buf_out);
return;
@ -473,40 +471,55 @@ gst_adder_loop (GstElement *element)
}
}
} else {
/* here's where the data gets copied. this is a little nasty looking
because it's the same code pretty much 3 times, except each time uses
different data types and clamp limits. */
GST_DEBUG (
"copying %d bytes from channel %p to output data %p "
/* here's where the data gets copied. */
GST_DEBUG ("copying %d bytes from channel %p to output data %p "
"in buffer %p",
GST_BUFFER_SIZE (buf_out), input,
GST_BUFFER_DATA (buf_out), buf_out);
if (adder->format == GST_ADDER_FORMAT_INT) {
if (adder->width == 16) {
if (adder->width == 32) {
gint32 *in = (gint32 *) raw_in;
gint32 *out = (gint32 *) GST_BUFFER_DATA (buf_out);
for (i = 0; i < GST_BUFFER_SIZE (buf_out) / 4; i++)
out[i] = CLAMP(out[i] + in[i], 0x80000000, 0x7fffffff);
} else if (adder->width == 16) {
gint16 *in = (gint16 *) raw_in;
gint16 *out = (gint16 *) GST_BUFFER_DATA (buf_out);
for (i = 0; i < GST_BUFFER_SIZE (buf_out) / 2; i++)
out[i] = CLAMP(out[i] + in[i], -32768, 32767);
out[i] = CLAMP(out[i] + in[i], 0x8000, 0x7fff);
} else if (adder->width == 8) {
gint8 *in = (gint8 *) raw_in;
gint8 *out = (gint8 *) GST_BUFFER_DATA (buf_out);
for (i = 0; i < GST_BUFFER_SIZE (buf_out); i++)
out[i] = CLAMP(out[i] + in[i], -128, 127);
out[i] = CLAMP(out[i] + in[i], 0x80, 0x7f);
} else {
gst_element_error (GST_ELEMENT (adder),
"invalid width (%u) for int format in gstadder\n",
"invalid width (%u) for integer audio in gstadder",
adder->width);
return;
}
} else if (adder->format == GST_ADDER_FORMAT_FLOAT) {
gfloat *in = (gfloat *) raw_in;
gfloat *out = (gfloat *) GST_BUFFER_DATA (buf_out);
for (i = 0; i < GST_BUFFER_SIZE (buf_out) / sizeof (gfloat); i++)
out[i] += in[i];
if (adder->width == 64) {
gdouble *in = (gdouble *) raw_in;
gdouble *out = (gdouble *) GST_BUFFER_DATA (buf_out);
for (i = 0; i < GST_BUFFER_SIZE (buf_out) / sizeof (gdouble); i++)
out[i] = CLAMP(out[i] + in[i], -1.0, 1.0);
} else if (adder->width == 32) {
gfloat *in = (gfloat *) raw_in;
gfloat *out = (gfloat *) GST_BUFFER_DATA (buf_out);
for (i = 0; i < GST_BUFFER_SIZE (buf_out) / sizeof (gfloat); i++)
out[i] = CLAMP(out[i] + in[i], -1.0, 1.0);
} else {
gst_element_error (GST_ELEMENT (adder),
"invalid width (%u) for float audio in gstadder",
adder->width);
return;
}
} else {
gst_element_error (GST_ELEMENT (adder),
"invalid audio format (%d) in gstadder\n",
"invalid audio format (%d) in gstadder",
adder->format);
return;
}
@ -519,23 +532,17 @@ gst_adder_loop (GstElement *element)
if (adder->format == GST_ADDER_FORMAT_UNSET) {
GstCaps *caps =
gst_caps_new ("default_adder_caps",
"audio/x-raw-int",
gst_props_new ("width", GST_PROPS_INT (16),
"depth", GST_PROPS_INT (16),
"rate", GST_PROPS_INT (44100),
"channels", GST_PROPS_INT (2),
"endianness", GST_PROPS_INT (G_BYTE_ORDER),
"signed", GST_PROPS_BOOLEAN (TRUE),
NULL));
gst_caps_new ("default_adder_caps",
"audio/x-raw-int",
GST_AUDIO_INT_PAD_TEMPLATE_PROPS);
if (gst_pad_try_set_caps (adder->srcpad, caps) < 0) {
gst_element_error (GST_ELEMENT (adder),
"Couldn't set the default caps, "
"use link_filtered instead");
"Couldn't set the default caps, "
"use link_filtered instead");
return;
}
gst_adder_parse_caps (adder, caps);
}
@ -552,6 +559,7 @@ gst_adder_loop (GstElement *element)
gst_pad_push (adder->srcpad, buf_out);
}
static GstElementStateReturn
gst_adder_change_state (GstElement *element)
{
@ -589,6 +597,7 @@ gst_adder_change_state (GstElement *element)
return GST_STATE_SUCCESS;
}
static gboolean
plugin_init (GModule *module, GstPlugin *plugin)
{

14
gst/adder/gstadder.h
View file

@ -69,22 +69,16 @@ struct _GstAdder {
guint numsinkpads;
GSList *input_channels;
/* the next three are valid for both int and float */
/* the next are valid for both int and float */
GstAdderFormat format;
guint rate;
guint channels;
/* the next five are valid only for format == GST_ADDER_FORMAT_INT */
guint width;
guint depth;
guint endianness;
guint law;
gboolean is_signed;
/* the next three are valid only for format == GST_ADDER_FORMAT_FLOAT */
const gchar *layout;
gfloat slope;
gfloat intercept;
/* the next are valid only for format == GST_ADDER_FORMAT_INT */
guint depth;
gboolean is_signed;
/* counters to keep track of timestamps */
gint64 timestamp;