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gst/law/: Ported alaw and mulaw plugins to 0.9, fixed the negotiation as well.
Original commit message from CVS: * gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_setcaps), (gst_alawdec_init), (gst_alawdec_chain): * gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_setcaps), (gst_alawenc_init), (gst_alawenc_chain): * gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_setcaps), (gst_mulawdec_init), (gst_mulawdec_chain): * gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_setcaps), (gst_mulawenc_init), (gst_mulawenc_chain): Ported alaw and mulaw plugins to 0.9, fixed the negotiation as well.
This commit is contained in:
Wim Taymans
parent
d1307cd8a3
commit
781bc3309b
5 changed files with 246 additions and 214 deletions
13
ChangeLog
13
ChangeLog
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@ -1,3 +1,16 @@
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2005-05-06 Wim Taymans <wim@fluendo.com>
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* gst/law/alaw-decode.c: (alawdec_getcaps), (alawdec_setcaps),
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(gst_alawdec_init), (gst_alawdec_chain):
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* gst/law/alaw-encode.c: (alawenc_getcaps), (alawenc_setcaps),
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(gst_alawenc_init), (gst_alawenc_chain):
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* gst/law/mulaw-decode.c: (mulawdec_getcaps), (mulawdec_setcaps),
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(gst_mulawdec_init), (gst_mulawdec_chain):
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* gst/law/mulaw-encode.c: (mulawenc_getcaps), (mulawenc_setcaps),
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(gst_mulawenc_init), (gst_mulawenc_chain):
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Ported alaw and mulaw plugins to 0.9, fixed the negotiation as
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well.
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2005-05-06 Christian Schaller <uraeus@gnome.org>
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* ext/alsa: removed plugins that are now in gst-plugins-base
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@ -43,7 +43,7 @@ static void gst_alawdec_class_init (GstALawDecClass * klass);
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static void gst_alawdec_base_init (GstALawDecClass * klass);
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static void gst_alawdec_init (GstALawDec * alawdec);
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static void gst_alawdec_chain (GstPad * pad, GstData * _data);
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static GstFlowReturn gst_alawdec_chain (GstPad * pad, GstBuffer * buffer);
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static GstElementClass *parent_class = NULL;
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@ -74,78 +74,92 @@ alaw_to_s16 (guint8 a_val)
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static GstCaps *
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alawdec_getcaps (GstPad * pad)
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{
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GstALawDec *alawdec = GST_ALAWDEC (gst_pad_get_parent (pad));
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GstALawDec *alawdec;
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GstPad *otherpad;
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GstCaps *base_caps, *othercaps;
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GstStructure *structure;
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const GValue *rate, *chans;
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alawdec = GST_ALAWDEC (GST_PAD_PARENT (pad));
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/* we can do what our template says */
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base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
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if (pad == alawdec->sinkpad) {
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otherpad = alawdec->srcpad;
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base_caps = gst_caps_new_simple ("audio/x-alaw", NULL);
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} else {
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otherpad = alawdec->sinkpad;
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base_caps = gst_caps_new_simple ("audio/x-raw-int",
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"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
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"signed", G_TYPE_BOOLEAN, TRUE,
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"endianness", G_TYPE_INT, G_BYTE_ORDER,
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"signed", G_TYPE_BOOLEAN, TRUE, NULL);
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}
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othercaps = gst_pad_get_allowed_caps (otherpad);
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/* now intersect rate and channels from peer caps */
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othercaps = gst_pad_peer_get_caps (otherpad);
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if (othercaps) {
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GstStructure *structure;
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const GValue *orate, *ochans;
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const GValue *rate, *chans;
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GValue irate = { 0 }, ichans = {
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0};
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/* Not fully correct, but usually, all structures in a caps have
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* the same samplerate and channels range. */
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structure = gst_caps_get_structure (othercaps, 0);
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orate = gst_structure_get_value (structure, "rate");
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ochans = gst_structure_get_value (structure, "channels");
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if (!rate || !chans)
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goto done;
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structure = gst_caps_get_structure (base_caps, 0);
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rate = gst_structure_get_value (structure, "rate");
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chans = gst_structure_get_value (structure, "channels");
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if (!rate || !chans)
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return gst_caps_new_empty ();
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goto done;
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gst_value_intersect (&irate, orate, rate);
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gst_value_intersect (&ichans, ochans, chans);
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/* Set the samplerate/channels on the to-be-returned caps */
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structure = gst_caps_get_structure (base_caps, 0);
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gst_structure_set_value (structure, "rate", rate);
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gst_structure_set_value (structure, "channels", chans);
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gst_caps_free (othercaps);
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gst_structure_set_value (structure, "rate", &irate);
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gst_structure_set_value (structure, "channels", &ichans);
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gst_caps_unref (othercaps);
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}
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done:
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return base_caps;
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}
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static GstPadLinkReturn
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alawdec_link (GstPad * pad, const GstCaps * caps)
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static gboolean
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alawdec_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstALawDec *alawdec = GST_ALAWDEC (gst_pad_get_parent (pad));
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GstALawDec *alawdec;
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GstPad *otherpad;
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GstStructure *structure;
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const GValue *rate, *chans;
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GstCaps *base_caps;
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GstPadLinkReturn link_return;
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alawdec = GST_ALAWDEC (GST_PAD_PARENT (pad));
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/* take rate and channels */
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structure = gst_caps_get_structure (caps, 0);
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rate = gst_structure_get_value (structure, "rate");
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chans = gst_structure_get_value (structure, "channels");
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if (!rate || !chans)
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return GST_PAD_LINK_REFUSED;
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return FALSE;
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if (pad == alawdec->srcpad) {
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otherpad = alawdec->sinkpad;
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base_caps = gst_caps_new_simple ("audio/x-alaw", NULL);
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} else {
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otherpad = alawdec->srcpad;
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base_caps = gst_caps_new_simple ("audio/x-raw-int",
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"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
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"endianness", G_TYPE_INT, G_BYTE_ORDER,
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"signed", G_TYPE_BOOLEAN, TRUE, NULL);
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}
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/* fill in values for otherpad */
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base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
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structure = gst_caps_get_structure (base_caps, 0);
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gst_structure_set_value (structure, "rate", rate);
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gst_structure_set_value (structure, "channels", chans);
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link_return = gst_pad_try_set_caps (otherpad, base_caps);
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/* and set on otherpad */
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gst_pad_set_caps (otherpad, base_caps);
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gst_caps_free (base_caps);
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gst_caps_unref (base_caps);
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return link_return;
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return TRUE;
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}
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GType
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@ -199,47 +213,41 @@ static void
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gst_alawdec_init (GstALawDec * alawdec)
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{
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alawdec->sinkpad = gst_pad_new_from_template (alawdec_sink_template, "sink");
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gst_pad_set_link_function (alawdec->sinkpad, alawdec_link);
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gst_pad_set_setcaps_function (alawdec->sinkpad, alawdec_setcaps);
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gst_pad_set_getcaps_function (alawdec->sinkpad, alawdec_getcaps);
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gst_pad_set_chain_function (alawdec->sinkpad, gst_alawdec_chain);
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gst_element_add_pad (GST_ELEMENT (alawdec), alawdec->sinkpad);
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alawdec->srcpad = gst_pad_new_from_template (alawdec_src_template, "src");
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gst_pad_set_link_function (alawdec->srcpad, alawdec_link);
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gst_pad_set_setcaps_function (alawdec->srcpad, alawdec_setcaps);
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gst_pad_set_getcaps_function (alawdec->srcpad, alawdec_getcaps);
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gst_element_add_pad (GST_ELEMENT (alawdec), alawdec->srcpad);
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}
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static void
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gst_alawdec_chain (GstPad * pad, GstData * _data)
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static GstFlowReturn
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gst_alawdec_chain (GstPad * pad, GstBuffer * buffer)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstALawDec *alawdec;
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gint16 *linear_data;
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guint8 *alaw_data;
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GstBuffer *outbuf;
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gint i;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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alawdec = GST_ALAWDEC (GST_OBJECT_PARENT (pad));
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g_return_if_fail (alawdec != NULL);
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g_return_if_fail (GST_IS_ALAWDEC (alawdec));
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alaw_data = (guint8 *) GST_BUFFER_DATA (buf);
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outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buf) * 2);
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
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GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
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alaw_data = (guint8 *) GST_BUFFER_DATA (buffer);
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outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer) * 2);
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GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
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GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
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gst_buffer_set_caps (outbuf, GST_PAD_CAPS (alawdec->srcpad));
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linear_data = (gint16 *) GST_BUFFER_DATA (outbuf);
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for (i = 0; i < GST_BUFFER_SIZE (buf); i++) {
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for (i = 0; i < GST_BUFFER_SIZE (buffer); i++) {
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*linear_data = alaw_to_s16 (*alaw_data);
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linear_data++;
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alaw_data++;
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}
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gst_buffer_unref (buf);
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gst_pad_push (alawdec->srcpad, GST_DATA (outbuf));
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gst_buffer_unref (buffer);
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return gst_pad_push (alawdec->srcpad, outbuf);
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}
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@ -43,7 +43,7 @@ static void gst_alawenc_class_init (GstALawEncClass * klass);
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static void gst_alawenc_base_init (GstALawEncClass * klass);
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static void gst_alawenc_init (GstALawEnc * alawenc);
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static void gst_alawenc_chain (GstPad * pad, GstData * _data);
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static GstFlowReturn gst_alawenc_chain (GstPad * pad, GstBuffer * buffer);
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/*
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* s16_to_alaw() - Convert a 16-bit linear PCM value to 8-bit A-law
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@ -117,77 +117,89 @@ static GstElementClass *parent_class = NULL;
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static GstCaps *
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alawenc_getcaps (GstPad * pad)
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{
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GstALawEnc *alawenc = GST_ALAWENC (gst_pad_get_parent (pad));
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GstALawEnc *alawenc;
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GstPad *otherpad;
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GstCaps *base_caps, *othercaps;
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GstCaps *base_caps, *othercaps, *result;
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GstStructure *structure;
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const GValue *rate, *chans;
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alawenc = GST_ALAWENC (GST_PAD_PARENT (pad));
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/* we can do what our template says */
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base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
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if (pad == alawenc->srcpad) {
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otherpad = alawenc->sinkpad;
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base_caps = gst_caps_new_simple ("audio/x-alaw", NULL);
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} else {
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otherpad = alawenc->srcpad;
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base_caps = gst_caps_new_simple ("audio/x-raw-int",
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"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
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"endianness", G_TYPE_INT, G_BYTE_ORDER,
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"signed", G_TYPE_BOOLEAN, TRUE, NULL);
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}
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othercaps = gst_pad_get_allowed_caps (otherpad);
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othercaps = gst_pad_peer_get_caps (otherpad);
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if (othercaps) {
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GstStructure *structure;
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const GValue *orate, *ochans;
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const GValue *rate, *chans;
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GValue irate = { 0 }, ichans = {
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0};
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/* Not fully correct, but usually, all structures in a caps have
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* the same samplerate and channels range. */
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structure = gst_caps_get_structure (othercaps, 0);
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orate = gst_structure_get_value (structure, "rate");
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ochans = gst_structure_get_value (structure, "channels");
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if (!rate || !chans)
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goto done;
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structure = gst_caps_get_structure (base_caps, 0);
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rate = gst_structure_get_value (structure, "rate");
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chans = gst_structure_get_value (structure, "channels");
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if (!rate || !chans)
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return gst_caps_new_empty ();
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goto done;
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gst_value_intersect (&irate, orate, rate);
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gst_value_intersect (&ichans, ochans, chans);
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/* Set the samplerate/channels on the to-be-returned caps */
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structure = gst_caps_get_structure (base_caps, 0);
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gst_structure_set_value (structure, "rate", rate);
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gst_structure_set_value (structure, "channels", chans);
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gst_caps_free (othercaps);
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gst_structure_set_value (structure, "rate", &irate);
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gst_structure_set_value (structure, "channels", &ichans);
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gst_caps_unref (othercaps);
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}
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done:
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return base_caps;
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}
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static GstPadLinkReturn
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alawenc_link (GstPad * pad, const GstCaps * caps)
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static gboolean
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alawenc_setcaps (GstPad * pad, GstCaps * caps)
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{
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GstALawEnc *alawenc = GST_ALAWENC (gst_pad_get_parent (pad));
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GstALawEnc *alawenc;
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GstPad *otherpad;
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GstStructure *structure;
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const GValue *rate, *chans;
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GstCaps *base_caps;
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GstPadLinkReturn link_return;
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alawenc = GST_ALAWENC (GST_PAD_PARENT (pad));
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structure = gst_caps_get_structure (caps, 0);
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rate = gst_structure_get_value (structure, "rate");
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chans = gst_structure_get_value (structure, "channels");
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if (!rate || !chans)
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return GST_PAD_LINK_REFUSED;
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return FALSE;
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if (pad == alawenc->sinkpad) {
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otherpad = alawenc->srcpad;
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base_caps = gst_caps_new_simple ("audio/x-alaw", NULL);
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} else {
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otherpad = alawenc->sinkpad;
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base_caps = gst_caps_new_simple ("audio/x-raw-int",
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"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
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"endianness", G_TYPE_INT, G_BYTE_ORDER,
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"signed", G_TYPE_BOOLEAN, TRUE, NULL);
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}
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base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
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structure = gst_caps_get_structure (base_caps, 0);
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gst_structure_set_value (structure, "rate", rate);
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gst_structure_set_value (structure, "channels", chans);
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link_return = gst_pad_try_set_caps (otherpad, base_caps);
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gst_pad_set_caps (otherpad, base_caps);
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gst_caps_free (base_caps);
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gst_caps_unref (base_caps);
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return link_return;
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return TRUE;
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}
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GType
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@ -241,39 +253,33 @@ static void
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gst_alawenc_init (GstALawEnc * alawenc)
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{
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alawenc->sinkpad = gst_pad_new_from_template (alawenc_sink_template, "sink");
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gst_pad_set_link_function (alawenc->sinkpad, alawenc_link);
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gst_pad_set_setcaps_function (alawenc->sinkpad, alawenc_setcaps);
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gst_pad_set_getcaps_function (alawenc->sinkpad, alawenc_getcaps);
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gst_pad_set_chain_function (alawenc->sinkpad, gst_alawenc_chain);
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gst_element_add_pad (GST_ELEMENT (alawenc), alawenc->sinkpad);
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alawenc->srcpad = gst_pad_new_from_template (alawenc_src_template, "src");
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gst_pad_set_link_function (alawenc->srcpad, alawenc_link);
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gst_pad_set_setcaps_function (alawenc->srcpad, alawenc_setcaps);
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gst_pad_set_getcaps_function (alawenc->srcpad, alawenc_getcaps);
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gst_element_add_pad (GST_ELEMENT (alawenc), alawenc->srcpad);
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}
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static void
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gst_alawenc_chain (GstPad * pad, GstData * _data)
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static GstFlowReturn
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gst_alawenc_chain (GstPad * pad, GstBuffer * buffer)
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{
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GstBuffer *buf = GST_BUFFER (_data);
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GstALawEnc *alawenc;
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gint16 *linear_data;
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guint8 *alaw_data;
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GstBuffer *outbuf;
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gint i;
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g_return_if_fail (pad != NULL);
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g_return_if_fail (GST_IS_PAD (pad));
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g_return_if_fail (buf != NULL);
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alawenc = GST_ALAWENC (GST_OBJECT_PARENT (pad));
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g_return_if_fail (alawenc != NULL);
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g_return_if_fail (GST_IS_ALAWENC (alawenc));
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linear_data = (gint16 *) GST_BUFFER_DATA (buf);
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outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buf) / 2);
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
|
||||
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
|
||||
linear_data = (gint16 *) GST_BUFFER_DATA (buffer);
|
||||
outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer) / 2);
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
|
||||
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
|
||||
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (alawenc->srcpad));
|
||||
alaw_data = (guint8 *) GST_BUFFER_DATA (outbuf);
|
||||
|
||||
for (i = 0; i < GST_BUFFER_SIZE (outbuf); i++) {
|
||||
|
|
@ -282,6 +288,7 @@ gst_alawenc_chain (GstPad * pad, GstData * _data)
|
|||
linear_data++;
|
||||
}
|
||||
|
||||
gst_buffer_unref (buf);
|
||||
gst_pad_push (alawenc->srcpad, GST_DATA (outbuf));
|
||||
gst_buffer_unref (buffer);
|
||||
|
||||
return gst_pad_push (alawenc->srcpad, outbuf);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -42,7 +42,7 @@ static void gst_mulawdec_class_init (GstMuLawDecClass * klass);
|
|||
static void gst_mulawdec_base_init (GstMuLawDecClass * klass);
|
||||
static void gst_mulawdec_init (GstMuLawDec * mulawdec);
|
||||
|
||||
static void gst_mulawdec_chain (GstPad * pad, GstData * _data);
|
||||
static GstFlowReturn gst_mulawdec_chain (GstPad * pad, GstBuffer * buffer);
|
||||
|
||||
static GstElementClass *parent_class = NULL;
|
||||
|
||||
|
|
@ -51,80 +51,85 @@ static GstElementClass *parent_class = NULL;
|
|||
static GstCaps *
|
||||
mulawdec_getcaps (GstPad * pad)
|
||||
{
|
||||
GstMuLawDec *mulawdec = GST_MULAWDEC (gst_pad_get_parent (pad));
|
||||
GstMuLawDec *mulawdec;
|
||||
GstPad *otherpad;
|
||||
GstCaps *base_caps, *othercaps;
|
||||
GstStructure *structure;
|
||||
const GValue *rate, *chans;
|
||||
|
||||
mulawdec = GST_MULAWDEC (GST_PAD_PARENT (pad));
|
||||
|
||||
base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
|
||||
|
||||
if (pad == mulawdec->sinkpad) {
|
||||
otherpad = mulawdec->srcpad;
|
||||
base_caps = gst_caps_new_simple ("audio/x-mulaw", NULL);
|
||||
} else {
|
||||
otherpad = mulawdec->sinkpad;
|
||||
base_caps = gst_caps_new_simple ("audio/x-raw-int",
|
||||
"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
|
||||
"signed", G_TYPE_BOOLEAN, TRUE,
|
||||
"endianness", G_TYPE_INT, G_BYTE_ORDER,
|
||||
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
|
||||
}
|
||||
othercaps = gst_pad_get_allowed_caps (otherpad);
|
||||
othercaps = gst_pad_peer_get_caps (otherpad);
|
||||
if (othercaps) {
|
||||
GstStructure *structure;
|
||||
const GValue *orate, *ochans;
|
||||
const GValue *rate, *chans;
|
||||
GValue irate = { 0 }, ichans = {
|
||||
0};
|
||||
|
||||
/* Not fully correct, but usually, all structures in a caps have
|
||||
* the same samplerate and channels range. */
|
||||
structure = gst_caps_get_structure (othercaps, 0);
|
||||
orate = gst_structure_get_value (structure, "rate");
|
||||
ochans = gst_structure_get_value (structure, "channels");
|
||||
if (!rate || !chans)
|
||||
goto done;
|
||||
|
||||
structure = gst_caps_get_structure (base_caps, 0);
|
||||
rate = gst_structure_get_value (structure, "rate");
|
||||
chans = gst_structure_get_value (structure, "channels");
|
||||
if (!rate || !chans)
|
||||
return gst_caps_new_empty ();
|
||||
goto done;
|
||||
|
||||
gst_value_intersect (&irate, orate, rate);
|
||||
gst_value_intersect (&ichans, ochans, chans);
|
||||
|
||||
/* Set the samplerate/channels on the to-be-returned caps */
|
||||
structure = gst_caps_get_structure (base_caps, 0);
|
||||
gst_structure_set_value (structure, "rate", rate);
|
||||
gst_structure_set_value (structure, "channels", chans);
|
||||
gst_caps_free (othercaps);
|
||||
gst_structure_set_value (structure, "rate", &irate);
|
||||
gst_structure_set_value (structure, "channels", &ichans);
|
||||
|
||||
gst_caps_unref (othercaps);
|
||||
}
|
||||
done:
|
||||
return base_caps;
|
||||
}
|
||||
|
||||
static GstPadLinkReturn
|
||||
mulawdec_link (GstPad * pad, const GstCaps * caps)
|
||||
static gboolean
|
||||
mulawdec_setcaps (GstPad * pad, GstCaps * caps)
|
||||
{
|
||||
GstMuLawDec *mulawdec = GST_MULAWDEC (gst_pad_get_parent (pad));
|
||||
GstMuLawDec *mulawdec;
|
||||
GstPad *otherpad;
|
||||
GstStructure *structure;
|
||||
const GValue *rate, *chans;
|
||||
GstCaps *base_caps;
|
||||
GstPadLinkReturn link_return;
|
||||
|
||||
mulawdec = GST_MULAWDEC (GST_PAD_PARENT (pad));
|
||||
|
||||
structure = gst_caps_get_structure (caps, 0);
|
||||
rate = gst_structure_get_value (structure, "rate");
|
||||
chans = gst_structure_get_value (structure, "channels");
|
||||
if (!rate || !chans)
|
||||
return GST_PAD_LINK_REFUSED;
|
||||
return FALSE;
|
||||
|
||||
if (pad == mulawdec->srcpad) {
|
||||
otherpad = mulawdec->sinkpad;
|
||||
base_caps = gst_caps_new_simple ("audio/x-mulaw", NULL);
|
||||
} else {
|
||||
otherpad = mulawdec->srcpad;
|
||||
base_caps = gst_caps_new_simple ("audio/x-raw-int",
|
||||
"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
|
||||
"endianness", G_TYPE_INT, G_BYTE_ORDER,
|
||||
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
|
||||
}
|
||||
|
||||
base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
|
||||
structure = gst_caps_get_structure (base_caps, 0);
|
||||
gst_structure_set_value (structure, "rate", rate);
|
||||
gst_structure_set_value (structure, "channels", chans);
|
||||
|
||||
link_return = gst_pad_try_set_caps (otherpad, base_caps);
|
||||
|
||||
gst_caps_free (base_caps);
|
||||
|
||||
return link_return;
|
||||
gst_pad_set_caps (otherpad, base_caps);
|
||||
gst_caps_unref (base_caps);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
GType
|
||||
|
|
@ -179,42 +184,37 @@ gst_mulawdec_init (GstMuLawDec * mulawdec)
|
|||
{
|
||||
mulawdec->sinkpad =
|
||||
gst_pad_new_from_template (mulawdec_sink_template, "sink");
|
||||
gst_pad_set_link_function (mulawdec->sinkpad, mulawdec_link);
|
||||
gst_pad_set_setcaps_function (mulawdec->sinkpad, mulawdec_setcaps);
|
||||
gst_pad_set_getcaps_function (mulawdec->sinkpad, mulawdec_getcaps);
|
||||
gst_pad_set_chain_function (mulawdec->sinkpad, gst_mulawdec_chain);
|
||||
gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->sinkpad);
|
||||
|
||||
mulawdec->srcpad = gst_pad_new_from_template (mulawdec_src_template, "src");
|
||||
gst_pad_set_link_function (mulawdec->srcpad, mulawdec_link);
|
||||
gst_pad_set_setcaps_function (mulawdec->srcpad, mulawdec_setcaps);
|
||||
gst_pad_set_getcaps_function (mulawdec->srcpad, mulawdec_getcaps);
|
||||
gst_element_add_pad (GST_ELEMENT (mulawdec), mulawdec->srcpad);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_mulawdec_chain (GstPad * pad, GstData * _data)
|
||||
static GstFlowReturn
|
||||
gst_mulawdec_chain (GstPad * pad, GstBuffer * buffer)
|
||||
{
|
||||
GstBuffer *buf = GST_BUFFER (_data);
|
||||
GstMuLawDec *mulawdec;
|
||||
gint16 *linear_data;
|
||||
guint8 *mulaw_data;
|
||||
GstBuffer *outbuf;
|
||||
|
||||
g_return_if_fail (pad != NULL);
|
||||
g_return_if_fail (GST_IS_PAD (pad));
|
||||
g_return_if_fail (buf != NULL);
|
||||
|
||||
mulawdec = GST_MULAWDEC (GST_OBJECT_PARENT (pad));
|
||||
g_return_if_fail (mulawdec != NULL);
|
||||
g_return_if_fail (GST_IS_MULAWDEC (mulawdec));
|
||||
|
||||
mulaw_data = (guint8 *) GST_BUFFER_DATA (buf);
|
||||
outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buf) * 2);
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
|
||||
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
|
||||
mulaw_data = (guint8 *) GST_BUFFER_DATA (buffer);
|
||||
outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer) * 2);
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
|
||||
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
|
||||
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mulawdec->srcpad));
|
||||
linear_data = (gint16 *) GST_BUFFER_DATA (outbuf);
|
||||
|
||||
mulaw_decode (mulaw_data, linear_data, GST_BUFFER_SIZE (buf));
|
||||
mulaw_decode (mulaw_data, linear_data, GST_BUFFER_SIZE (buffer));
|
||||
|
||||
gst_buffer_unref (buf);
|
||||
gst_pad_push (mulawdec->srcpad, GST_DATA (outbuf));
|
||||
gst_buffer_unref (buffer);
|
||||
|
||||
return gst_pad_push (mulawdec->srcpad, outbuf);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -42,7 +42,7 @@ static void gst_mulawenc_class_init (GstMuLawEncClass * klass);
|
|||
static void gst_mulawenc_base_init (GstMuLawEncClass * klass);
|
||||
static void gst_mulawenc_init (GstMuLawEnc * mulawenc);
|
||||
|
||||
static void gst_mulawenc_chain (GstPad * pad, GstData * _data);
|
||||
static GstFlowReturn gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer);
|
||||
|
||||
static GstElementClass *parent_class = NULL;
|
||||
|
||||
|
|
@ -51,77 +51,85 @@ static GstElementClass *parent_class = NULL;
|
|||
static GstCaps *
|
||||
mulawenc_getcaps (GstPad * pad)
|
||||
{
|
||||
GstMuLawEnc *mulawenc = GST_MULAWENC (gst_pad_get_parent (pad));
|
||||
GstMuLawEnc *mulawenc;
|
||||
GstPad *otherpad;
|
||||
GstCaps *base_caps, *othercaps;
|
||||
GstStructure *structure;
|
||||
const GValue *rate, *chans;
|
||||
|
||||
mulawenc = GST_MULAWENC (GST_PAD_PARENT (pad));
|
||||
|
||||
base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (pad));
|
||||
|
||||
if (pad == mulawenc->srcpad) {
|
||||
otherpad = mulawenc->sinkpad;
|
||||
base_caps = gst_caps_new_simple ("audio/x-mulaw", NULL);
|
||||
} else {
|
||||
otherpad = mulawenc->srcpad;
|
||||
base_caps = gst_caps_new_simple ("audio/x-raw-int",
|
||||
"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
|
||||
"endianness", G_TYPE_INT, G_BYTE_ORDER,
|
||||
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
|
||||
}
|
||||
othercaps = gst_pad_get_allowed_caps (otherpad);
|
||||
othercaps = gst_pad_peer_get_caps (otherpad);
|
||||
if (othercaps) {
|
||||
GstStructure *structure;
|
||||
const GValue *orate, *ochans;
|
||||
const GValue *rate, *chans;
|
||||
GValue irate = { 0 }, ichans = {
|
||||
0};
|
||||
|
||||
/* Not fully correct, but usually, all structures in a caps have
|
||||
* the same samplerate and channels range. */
|
||||
structure = gst_caps_get_structure (othercaps, 0);
|
||||
orate = gst_structure_get_value (structure, "rate");
|
||||
ochans = gst_structure_get_value (structure, "channels");
|
||||
if (!rate || !chans)
|
||||
goto done;
|
||||
|
||||
structure = gst_caps_get_structure (base_caps, 0);
|
||||
rate = gst_structure_get_value (structure, "rate");
|
||||
chans = gst_structure_get_value (structure, "channels");
|
||||
if (!rate || !chans)
|
||||
return gst_caps_new_empty ();
|
||||
goto done;
|
||||
|
||||
gst_value_intersect (&irate, orate, rate);
|
||||
gst_value_intersect (&ichans, ochans, chans);
|
||||
|
||||
/* Set the samplerate/channels on the to-be-returned caps */
|
||||
structure = gst_caps_get_structure (base_caps, 0);
|
||||
gst_structure_set_value (structure, "rate", rate);
|
||||
gst_structure_set_value (structure, "channels", chans);
|
||||
gst_caps_free (othercaps);
|
||||
gst_structure_set_value (structure, "rate", &irate);
|
||||
gst_structure_set_value (structure, "channels", &ichans);
|
||||
|
||||
gst_caps_unref (othercaps);
|
||||
}
|
||||
done:
|
||||
return base_caps;
|
||||
}
|
||||
|
||||
static GstPadLinkReturn
|
||||
mulawenc_link (GstPad * pad, const GstCaps * caps)
|
||||
static gboolean
|
||||
mulawenc_setcaps (GstPad * pad, GstCaps * caps)
|
||||
{
|
||||
GstMuLawEnc *mulawenc = GST_MULAWENC (gst_pad_get_parent (pad));
|
||||
GstMuLawEnc *mulawenc;
|
||||
GstPad *otherpad;
|
||||
GstStructure *structure;
|
||||
const GValue *rate, *chans;
|
||||
GstCaps *base_caps;
|
||||
GstPadLinkReturn link_return;
|
||||
|
||||
mulawenc = GST_MULAWENC (gst_pad_get_parent (pad));
|
||||
|
||||
structure = gst_caps_get_structure (caps, 0);
|
||||
rate = gst_structure_get_value (structure, "rate");
|
||||
chans = gst_structure_get_value (structure, "channels");
|
||||
if (!rate || !chans)
|
||||
return GST_PAD_LINK_REFUSED;
|
||||
return FALSE;
|
||||
|
||||
if (pad == mulawenc->sinkpad) {
|
||||
otherpad = mulawenc->srcpad;
|
||||
base_caps = gst_caps_new_simple ("audio/x-mulaw", NULL);
|
||||
} else {
|
||||
otherpad = mulawenc->sinkpad;
|
||||
base_caps = gst_caps_new_simple ("audio/x-raw-int",
|
||||
"width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16,
|
||||
"endianness", G_TYPE_INT, G_BYTE_ORDER,
|
||||
"signed", G_TYPE_BOOLEAN, TRUE, NULL);
|
||||
}
|
||||
base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
|
||||
|
||||
structure = gst_caps_get_structure (base_caps, 0);
|
||||
gst_structure_set_value (structure, "rate", rate);
|
||||
gst_structure_set_value (structure, "channels", chans);
|
||||
|
||||
link_return = gst_pad_try_set_caps (otherpad, base_caps);
|
||||
gst_pad_set_caps (otherpad, base_caps);
|
||||
gst_caps_unref (base_caps);
|
||||
|
||||
gst_caps_free (base_caps);
|
||||
|
||||
return link_return;
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
GType
|
||||
|
|
@ -176,41 +184,37 @@ gst_mulawenc_init (GstMuLawEnc * mulawenc)
|
|||
{
|
||||
mulawenc->sinkpad =
|
||||
gst_pad_new_from_template (mulawenc_sink_template, "sink");
|
||||
gst_pad_set_link_function (mulawenc->sinkpad, mulawenc_link);
|
||||
gst_pad_set_setcaps_function (mulawenc->sinkpad, mulawenc_setcaps);
|
||||
gst_pad_set_getcaps_function (mulawenc->sinkpad, mulawenc_getcaps);
|
||||
gst_pad_set_chain_function (mulawenc->sinkpad, gst_mulawenc_chain);
|
||||
gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->sinkpad);
|
||||
|
||||
mulawenc->srcpad = gst_pad_new_from_template (mulawenc_src_template, "src");
|
||||
gst_pad_set_link_function (mulawenc->srcpad, mulawenc_link);
|
||||
gst_pad_set_setcaps_function (mulawenc->srcpad, mulawenc_setcaps);
|
||||
gst_pad_set_getcaps_function (mulawenc->srcpad, mulawenc_getcaps);
|
||||
gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->srcpad);
|
||||
}
|
||||
|
||||
static void
|
||||
gst_mulawenc_chain (GstPad * pad, GstData * _data)
|
||||
static GstFlowReturn
|
||||
gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer)
|
||||
{
|
||||
GstBuffer *buf = GST_BUFFER (_data);
|
||||
GstMuLawEnc *mulawenc;
|
||||
gint16 *linear_data;
|
||||
guint8 *mulaw_data;
|
||||
GstBuffer *outbuf;
|
||||
|
||||
g_return_if_fail (pad != NULL);
|
||||
g_return_if_fail (GST_IS_PAD (pad));
|
||||
g_return_if_fail (buf != NULL);
|
||||
|
||||
mulawenc = GST_MULAWENC (GST_OBJECT_PARENT (pad));
|
||||
g_return_if_fail (mulawenc != NULL);
|
||||
g_return_if_fail (GST_IS_MULAWENC (mulawenc));
|
||||
|
||||
linear_data = (gint16 *) GST_BUFFER_DATA (buf);
|
||||
outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buf) / 2);
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
|
||||
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buf);
|
||||
linear_data = (gint16 *) GST_BUFFER_DATA (buffer);
|
||||
outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer) / 2);
|
||||
GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
|
||||
GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
|
||||
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mulawenc->srcpad));
|
||||
mulaw_data = (gint8 *) GST_BUFFER_DATA (outbuf);
|
||||
|
||||
mulaw_encode (linear_data, mulaw_data, GST_BUFFER_SIZE (outbuf));
|
||||
|
||||
gst_buffer_unref (buf);
|
||||
gst_pad_push (mulawenc->srcpad, GST_DATA (outbuf));
|
||||
gst_buffer_unref (buffer);
|
||||
|
||||
return gst_pad_push (mulawenc->srcpad, outbuf);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue