diff options
Diffstat (limited to 'gst/law/mulaw-encode.c')
-rw-r--r-- | gst/law/mulaw-encode.c | 38 |
1 files changed, 28 insertions, 10 deletions
diff --git a/gst/law/mulaw-encode.c b/gst/law/mulaw-encode.c index e17b5193..defb7dde 100644 --- a/gst/law/mulaw-encode.c +++ b/gst/law/mulaw-encode.c @@ -104,16 +104,13 @@ mulawenc_setcaps (GstPad * pad, GstCaps * caps) GstMuLawEnc *mulawenc; GstPad *otherpad; GstStructure *structure; - const GValue *rate, *chans; GstCaps *base_caps; 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 FALSE; + gst_structure_get_int (structure, "channels", &mulawenc->channels); + gst_structure_get_int (structure, "rate", &mulawenc->rate); if (pad == mulawenc->sinkpad) { otherpad = mulawenc->srcpad; @@ -123,10 +120,12 @@ mulawenc_setcaps (GstPad * pad, GstCaps * caps) 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); + gst_structure_set (structure, "rate", G_TYPE_INT, mulawenc->rate, NULL); + gst_structure_set (structure, "channels", G_TYPE_INT, mulawenc->channels, + NULL); gst_pad_set_caps (otherpad, base_caps); + gst_caps_unref (base_caps); return TRUE; @@ -193,6 +192,11 @@ gst_mulawenc_init (GstMuLawEnc * mulawenc) 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); + + /* init rest */ + mulawenc->channels = 0; + mulawenc->rate = 0; + mulawenc->ts = 0; } static GstFlowReturn @@ -202,13 +206,22 @@ gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer) gint16 *linear_data; guint8 *mulaw_data; GstBuffer *outbuf; + gint bufsize; mulawenc = GST_MULAWENC (GST_OBJECT_PARENT (pad)); + if (!mulawenc->rate || !mulawenc->channels) + goto not_negotiated; + 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); + bufsize = GST_BUFFER_SIZE (buffer) / 2; + outbuf = gst_buffer_new_and_alloc (bufsize); + + GST_BUFFER_DURATION (outbuf) = GST_SECOND * (bufsize) / + (mulawenc->rate * mulawenc->channels); + GST_BUFFER_TIMESTAMP (outbuf) = mulawenc->ts; + mulawenc->ts += GST_BUFFER_DURATION (outbuf); + gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mulawenc->srcpad)); mulaw_data = (guint8 *) GST_BUFFER_DATA (outbuf); @@ -217,4 +230,9 @@ gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer) gst_buffer_unref (buffer); return gst_pad_push (mulawenc->srcpad, outbuf); + +not_negotiated: + { + return GST_FLOW_NOT_NEGOTIATED; + } } |