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gst/law/: The encoder can't really renegotiate at the time they perform a pad-alloc so make the srcpads use fixed caps.

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Original commit message from CVS:
* gst/law/alaw-encode.c: (gst_alaw_enc_init), (gst_alaw_enc_chain):
* gst/law/mulaw-conversion.c:
* gst/law/mulaw-encode.c: (gst_mulawenc_init),
(gst_mulawenc_chain):
The encoder can't really renegotiate at the time they perform a
pad-alloc so make the srcpads use fixed caps.
Check the buffer size after a pad-alloc because the returned size might
not be right when the downstream element does not know the size of the
new buffer (capsfilter). Fixes #549073.
This commit is contained in:
Wim Taymans 2008-08-25 09:48:06 +00:00
parent 4cefe7e944
commit c0826dc21d
4 changed files with 38 additions and 12 deletions
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12
ChangeLog
View file

@ -1,3 +1,15 @@
2008-08-25 Wim Taymans <wim.taymans@collabora.co.uk>
* gst/law/alaw-encode.c: (gst_alaw_enc_init), (gst_alaw_enc_chain):
* gst/law/mulaw-conversion.c:
* gst/law/mulaw-encode.c: (gst_mulawenc_init),
(gst_mulawenc_chain):
The encoder can't really renegotiate at the time they perform a
pad-alloc so make the srcpads use fixed caps.
Check the buffer size after a pad-alloc because the returned size might
not be right when the downstream element does not know the size of the
new buffer (capsfilter). Fixes #549073.
2008-08-23 Sebastian Dröge <sebastian.droege@collabora.co.uk>
Patch by: Filippo Argiolas <filippo dot argiolas at gmail dot com>

17
gst/law/alaw-encode.c
View file

@ -421,6 +421,7 @@ gst_alaw_enc_init (GstALawEnc * alawenc, GstALawEncClass * klass)
GST_DEBUG_FUNCPTR (gst_alaw_enc_setcaps));
gst_pad_set_getcaps_function (alawenc->srcpad,
GST_DEBUG_FUNCPTR (gst_alaw_enc_getcaps));
gst_pad_use_fixed_caps (alawenc->srcpad);
gst_element_add_pad (GST_ELEMENT (alawenc), alawenc->srcpad);
/* init rest */
@ -457,11 +458,6 @@ gst_alaw_enc_chain (GstPad * pad, GstBuffer * buffer)
GST_LOG_OBJECT (alawenc, "buffer with ts=%" GST_TIME_FORMAT,
GST_TIME_ARGS (timestamp));
if (duration == GST_CLOCK_TIME_NONE) {
duration = gst_util_uint64_scale_int (alaw_size,
GST_SECOND, alawenc->rate * alawenc->channels);
}
ret =
gst_pad_alloc_buffer_and_set_caps (alawenc->srcpad,
GST_BUFFER_OFFSET_NONE, alaw_size, GST_PAD_CAPS (alawenc->srcpad),
@ -469,6 +465,17 @@ gst_alaw_enc_chain (GstPad * pad, GstBuffer * buffer)
if (ret != GST_FLOW_OK)
goto done;
if (duration == GST_CLOCK_TIME_NONE) {
duration = gst_util_uint64_scale_int (alaw_size,
GST_SECOND, alawenc->rate * alawenc->channels);
}
if (GST_BUFFER_SIZE (outbuf) < alaw_size) {
/* pad-alloc can return a smaller buffer */
gst_buffer_unref (outbuf);
outbuf = gst_buffer_new_and_alloc (alaw_size);
}
alaw_data = (guint8 *) GST_BUFFER_DATA (outbuf);
/* copy discont flag */

2
gst/law/mulaw-conversion.c
View file

@ -25,7 +25,7 @@
#include <glib.h>
/* #define ZEROTRAP *//* turn on the trap as per the MIL-STD */
#undef ZEROTRAP /* turn on the trap as per the MIL-STD */
#define BIAS 0x84 /* define the add-in bias for 16 bit samples */
#define CLIP 32635

19
gst/law/mulaw-encode.c
View file

@ -194,6 +194,7 @@ gst_mulawenc_init (GstMuLawEnc * mulawenc)
mulawenc->srcpad = gst_pad_new_from_template (mulawenc_src_template, "src");
gst_pad_set_setcaps_function (mulawenc->srcpad, mulawenc_setcaps);
gst_pad_set_getcaps_function (mulawenc->srcpad, mulawenc_getcaps);
gst_pad_use_fixed_caps (mulawenc->srcpad);
gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->srcpad);
/* init rest */
@ -225,17 +226,23 @@ gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer)
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
ret = gst_pad_alloc_buffer_and_set_caps (mulawenc->srcpad,
GST_BUFFER_OFFSET_NONE, mulaw_size, GST_PAD_CAPS (mulawenc->srcpad),
&outbuf);
if (ret != GST_FLOW_OK)
goto alloc_failed;
if (duration == -1) {
duration = gst_util_uint64_scale_int (mulaw_size,
GST_SECOND, mulawenc->rate * mulawenc->channels);
}
ret =
gst_pad_alloc_buffer_and_set_caps (mulawenc->srcpad,
GST_BUFFER_OFFSET_NONE, mulaw_size, GST_PAD_CAPS (mulawenc->srcpad),
&outbuf);
if (ret != GST_FLOW_OK)
goto alloc_failed;
if (GST_BUFFER_SIZE (outbuf) < mulaw_size) {
/* pad-alloc can suggest a smaller size */
gst_buffer_unref (outbuf);
outbuf = gst_buffer_new_and_alloc (mulaw_size);
}
mulaw_data = (guint8 *) GST_BUFFER_DATA (outbuf);