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ext/theora/: Parse input caps and make the PAR override the encoded PAR when specified by a container. Fixes #555699.

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Original commit message from CVS:
Based on patch by: Robin Stocker <robin at nibor dot org>
* ext/theora/gsttheoradec.h:
* ext/theora/theoradec.c: (gst_theora_dec_init),
(theora_dec_setcaps), (theora_handle_type_packet),
(theora_dec_decode_buffer), (theora_dec_change_state):
Parse input caps and make the PAR override the encoded PAR when
specified by a container. Fixes #555699.
This commit is contained in:
Robin Stocker 2008-10-13 11:36:13 +00:00 committed by Wim Taymans
parent 4ae82906ab
commit cf5c8e426d
3 changed files with 49 additions and 2 deletions
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11
ChangeLog
View file

@ -1,3 +1,14 @@
2008-10-13 Wim Taymans <wim.taymans@collabora.co.uk>
Based on patch by: Robin Stocker <robin at nibor dot org>
* ext/theora/gsttheoradec.h:
* ext/theora/theoradec.c: (gst_theora_dec_init),
(theora_dec_setcaps), (theora_handle_type_packet),
(theora_dec_decode_buffer), (theora_dec_change_state):
Parse input caps and make the PAR override the encoded PAR when
specified by a container. Fixes #555699.
2008-10-13 Wim Taymans <wim.taymans@collabora.co.uk>
* gst-libs/gst/rtp/gstbasertpdepayload.c:

4
ext/theora/gsttheoradec.h
View file

@ -93,6 +93,10 @@ struct _GstTheoraDec
/* QoS stuff */ /* with LOCK*/
gdouble proportion;
GstClockTime earliest_time;
gboolean have_par;
gint par_num;
gint par_den;
};
struct _GstTheoraDecClass

36
ext/theora/theoradec.c
View file

@ -86,6 +86,7 @@ static void theora_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static gboolean theora_dec_sink_event (GstPad * pad, GstEvent * event);
static gboolean theora_dec_setcaps (GstPad * pad, GstCaps * caps);
static GstFlowReturn theora_dec_chain (GstPad * pad, GstBuffer * buffer);
static GstStateChangeReturn theora_dec_change_state (GstElement * element,
GstStateChange transition);
@ -146,6 +147,7 @@ gst_theora_dec_init (GstTheoraDec * dec, GstTheoraDecClass * g_class)
gst_pad_new_from_static_template (&theora_dec_sink_factory, "sink");
gst_pad_set_query_function (dec->sinkpad, theora_dec_sink_query);
gst_pad_set_event_function (dec->sinkpad, theora_dec_sink_event);
gst_pad_set_setcaps_function (dec->sinkpad, theora_dec_setcaps);
gst_pad_set_chain_function (dec->sinkpad, theora_dec_chain);
gst_element_add_pad (GST_ELEMENT (dec), dec->sinkpad);
@ -727,6 +729,25 @@ newseg_wrong_format:
}
}
static gboolean
theora_dec_setcaps (GstPad * pad, GstCaps * caps)
{
GstTheoraDec *dec;
GstStructure *s;
dec = GST_THEORA_DEC (gst_pad_get_parent (pad));
s = gst_caps_get_structure (caps, 0);
/* parse the par, this overrides the encoded par */
dec->have_par = gst_structure_get_fraction (s, "pixel-aspect-ratio",
&dec->par_num, &dec->par_den);
gst_object_unref (dec);
return TRUE;
}
static GstFlowReturn
theora_handle_comment_packet (GstTheoraDec * dec, ogg_packet * packet)
{
@ -789,8 +810,16 @@ theora_handle_type_packet (GstTheoraDec * dec, ogg_packet * packet)
* x:0 for other x isn't technically allowed, but it's seen in the wild and
* is reasonable to treat the same.
*/
par_num = dec->info.aspect_numerator;
par_den = dec->info.aspect_denominator;
if (dec->have_par) {
/* we had a par on the sink caps, override the encoded par */
GST_DEBUG_OBJECT (dec, "overriding with input PAR");
par_num = dec->par_num;
par_den = dec->par_den;
} else {
/* take encoded par */
par_num = dec->info.aspect_numerator;
par_den = dec->info.aspect_denominator;
}
if (par_den == 0) {
par_num = par_den = 1;
}
@ -1237,6 +1266,8 @@ theora_dec_decode_buffer (GstTheoraDec * dec, GstBuffer * buf)
/* EOS does not matter for the decoder */
packet.e_o_s = 0;
GST_LOG_OBJECT (dec, "decode buffer of size %u", packet.bytes);
if (dec->have_header) {
if (packet.granulepos != -1) {
dec->granulepos = packet.granulepos;
@ -1483,6 +1514,7 @@ theora_dec_change_state (GstElement * element, GstStateChange transition)
theora_comment_init (&dec->comment);
GST_DEBUG_OBJECT (dec, "Setting have_header to FALSE in READY->PAUSED");
dec->have_header = FALSE;
dec->have_par = FALSE;
gst_theora_dec_reset (dec);
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING: