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gst/audioconvert/gstaudioconvert.c: Implement instant setup switching.

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Original commit message from CVS:
* gst/audioconvert/gstaudioconvert.c: (gst_audio_convert_init),
(gst_audio_convert_chain), (gst_audio_convert_link_src),
(gst_audio_convert_setcaps):
Implement instant setup switching.
This commit is contained in:
Ronald S. Bultje 2005-05-23 17:28:02 +00:00
parent 1419d5ac97
commit 78016b40cf
2 changed files with 99 additions and 75 deletions
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7
ChangeLog
View file

@ -1,3 +1,10 @@
2005-05-23 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/audioconvert/gstaudioconvert.c: (gst_audio_convert_init),
(gst_audio_convert_chain), (gst_audio_convert_link_src),
(gst_audio_convert_setcaps):
Implement instant setup switching.
2005-05-19 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* gst/playback/gstplaybasebin.c: (probe_triggered):

167
gst/audioconvert/gstaudioconvert.c
View file

@ -61,6 +61,8 @@ static void gst_audio_convert_dispose (GObject * obj);
/* gstreamer functions */
static GstFlowReturn gst_audio_convert_chain (GstPad * pad, GstBuffer * buffer);
static gboolean gst_audio_convert_link_src (GstAudioConvert * this,
GstCaps * sinkcaps, GstAudioConvertCaps * sink_ac_caps);
static gboolean gst_audio_convert_setcaps (GstPad * pad, GstCaps * caps);
static GstCaps *gst_audio_convert_fixate (GstPad * pad, GstCaps * caps);
static GstCaps *gst_audio_convert_getcaps (GstPad * pad);
@ -195,7 +197,7 @@ gst_audio_convert_init (GstAudioConvert * this)
gst_pad_new_from_template (gst_static_pad_template_get
(&gst_audio_convert_src_template), "src");
gst_pad_set_getcaps_function (this->src, gst_audio_convert_getcaps);
gst_pad_set_setcaps_function (this->src, gst_audio_convert_setcaps);
//gst_pad_set_setcaps_function (this->src, gst_audio_convert_setcaps);
gst_pad_set_fixatecaps_function (this->src, gst_audio_convert_fixate);
gst_element_add_pad (GST_ELEMENT (this), this->src);
@ -235,22 +237,6 @@ gst_audio_convert_chain (GstPad * pad, GstBuffer * buf)
this = GST_AUDIO_CONVERT (GST_OBJECT_PARENT (pad));
/* FIXME */
#if 0
if (!GST_PAD_CAPS (this->sink)) {
GST_ELEMENT_ERROR (this, CORE, NEGOTIATION, (NULL),
("Sink pad (connected to %s:%s) not negotiated before chain function",
GST_DEBUG_PAD_NAME (gst_pad_get_peer (this->sink))));
gst_buffer_unref (buf);
return GST_FLOW_NOT_NEGOTIATED;
}
if (!GST_PAD_CAPS (this->src)) {
gst_buffer_unref (buf);
return GST_FLOW_NOT_NEGOTIATED;
}
#endif
/**
* Theory of operation:
* - convert the format (endianness, signedness, width, depth) to
@ -260,6 +246,16 @@ gst_audio_convert_chain (GstPad * pad, GstBuffer * buf)
*/
GST_STREAM_LOCK (pad);
if (!GST_RPAD_CAPS (this->sink)) {
goto not_negotiated;
} else if (!GST_RPAD_CAPS (this->src)) {
if (!gst_audio_convert_link_src (this,
GST_RPAD_CAPS (this->sink), &this->sinkcaps))
goto no_format;
} else if (!this->matrix) {
gst_audio_convert_setup_matrix (this);
}
buf = gst_audio_convert_buffer_to_default_format (this, buf);
buf = gst_audio_convert_channels (this, buf);
buf = gst_audio_convert_buffer_from_default_format (this, buf);
@ -269,6 +265,23 @@ gst_audio_convert_chain (GstPad * pad, GstBuffer * buf)
GST_STREAM_UNLOCK (pad);
return ret;
not_negotiated:
{
GST_ELEMENT_ERROR (this, CORE, NEGOTIATION, (NULL),
("Pad not negotiated before chain function was called"));
gst_buffer_unref (buf);
GST_STREAM_UNLOCK (pad);
return GST_FLOW_NOT_NEGOTIATED;
}
no_format:
{
GST_ELEMENT_ERROR (this, CORE, NEGOTIATION, (NULL),
("Could not negotiate format"));
gst_buffer_unref (buf);
GST_STREAM_UNLOCK (pad);
return GST_FLOW_ERROR;
}
}
static GstCaps *
@ -393,14 +406,68 @@ gst_audio_convert_parse_caps (const GstCaps * gst_caps,
return TRUE;
}
static gboolean
gst_audio_convert_link_src (GstAudioConvert * this,
GstCaps * sinkcaps, GstAudioConvertCaps * sink_ac_caps)
{
GstAudioConvertCaps ac_caps = { 0 };
if (gst_pad_peer_accept_caps (this->src, sinkcaps)) {
/* great, so that will be our suggestion then */
this->src_prefered = gst_caps_ref (sinkcaps);
gst_caps_replace (&GST_RPAD_CAPS (this->src), sinkcaps);
ac_caps = *sink_ac_caps;
if (ac_caps.pos) {
ac_caps.pos = g_memdup (ac_caps.pos, sizeof (gint) * ac_caps.channels);
}
} else {
/* nope, find something we can convert to and the peer can
* accept. */
GstCaps *othercaps = gst_pad_peer_get_caps (this->src);
if (othercaps) {
/* peel off first one */
GstCaps *targetcaps = gst_caps_copy_nth (othercaps, 0);
GstStructure *structure = gst_caps_get_structure (targetcaps, 0);
gst_caps_unref (othercaps);
/* set the rate on the caps, this has to work */
gst_structure_set (structure,
"rate", G_TYPE_INT, sink_ac_caps->rate,
"channels", G_TYPE_INT, sink_ac_caps->channels, NULL);
if (strcmp (gst_structure_get_name (structure), "audio/x-raw-float") == 0) {
if (!sink_ac_caps->is_int) {
/* copy over */
gst_structure_set (structure, "buffer-frames", G_TYPE_INT,
ac_caps.buffer_frames, NULL);
} else {
/* set to anything */
gst_structure_set (structure, "buffer-frames", G_TYPE_INT, 0, NULL);
}
}
/* this will be our suggestion */
this->src_prefered = targetcaps;
if (!gst_audio_convert_parse_caps (targetcaps, &ac_caps))
return FALSE;
gst_caps_replace (&GST_RPAD_CAPS (this->src), targetcaps);
}
}
this->srccaps = ac_caps;
GST_DEBUG_OBJECT (this, "negotiated pad to %" GST_PTR_FORMAT, sinkcaps);
return TRUE;
}
static gboolean
gst_audio_convert_setcaps (GstPad * pad, GstCaps * caps)
{
GstAudioConvert *this;
GstPad *otherpad;
GstAudioConvertCaps ac_caps = { 0 };
GstAudioConvertCaps other_ac_caps = { 0 };
GstCaps **other_prefered, **prefered;
gboolean res;
g_return_val_if_fail (GST_IS_PAD (pad), FALSE);
g_return_val_if_fail (GST_IS_AUDIO_CONVERT (GST_OBJECT_PARENT (pad)), FALSE);
@ -415,65 +482,15 @@ gst_audio_convert_setcaps (GstPad * pad, GstCaps * caps)
if (!gst_audio_convert_parse_caps (caps, &ac_caps))
return FALSE;
otherpad = (pad == this->src ? this->sink : this->src);
prefered = (pad == this->src) ? &this->src_prefered : &this->sink_prefered;
other_prefered =
(pad == this->src) ? &this->sink_prefered : &this->src_prefered;
this->sink_prefered = caps;
*prefered = caps;
/* check passthrough */
if (gst_pad_peer_accept_caps (otherpad, caps)) {
/* great, so that will be our suggestion then */
*other_prefered = gst_caps_ref (caps);
} else {
/* nope, find something we can convert to and the peer can
* accept. */
GstCaps *othercaps = gst_pad_peer_get_caps (otherpad);
if (othercaps) {
/* peel off first one */
GstCaps *targetcaps = gst_caps_copy_nth (othercaps, 0);
GstStructure *structure = gst_caps_get_structure (targetcaps, 0);
gst_caps_unref (othercaps);
/* set the rate on the caps, this has to work */
gst_structure_set (structure, "rate", G_TYPE_INT, ac_caps.rate, NULL);
gst_structure_set (structure, "channels", G_TYPE_INT, ac_caps.channels,
NULL);
if (strcmp (gst_structure_get_name (structure), "audio/x-raw-float") == 0) {
if (!ac_caps.is_int) {
/* copy over */
gst_structure_set (structure, "buffer-frames", G_TYPE_INT,
ac_caps.buffer_frames, NULL);
} else {
/* set to anything */
gst_structure_set (structure, "buffer-frames", G_TYPE_INT, 0, NULL);
}
}
/* this will be our suggestion */
*other_prefered = targetcaps;
if (!gst_audio_convert_parse_caps (targetcaps, &other_ac_caps))
return FALSE;
gst_caps_replace (&GST_RPAD_CAPS (otherpad), targetcaps);
}
}
if (this->sink == pad) {
g_free (this->srccaps.pos);
this->srccaps = other_ac_caps;
if ((res = gst_audio_convert_link_src (this, caps, &ac_caps))) {
this->sinkcaps = ac_caps;
} else {
g_free (this->sinkcaps.pos);
this->srccaps = ac_caps;
this->sinkcaps = other_ac_caps;
GST_DEBUG_OBJECT (this, "negotiated pad to %" GST_PTR_FORMAT, caps);
}
GST_DEBUG_OBJECT (this, "negotiated pad to %" GST_PTR_FORMAT, caps);
gst_audio_convert_setup_matrix (this);
return TRUE;
return res;
}
/* tries to fixate the given field of the given caps to the given int value */