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ext/dts/gstdtsdec.*: Add support for "audio/x-private1-dts" as used by flupsparse. Most changes adapted from a52dec.

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Original commit message from CVS:
* ext/dts/gstdtsdec.c: (gst_dtsdec_init),
(gst_dtsdec_sink_setcaps), (gst_dtsdec_chain_raw),
(gst_dtsdec_chain):
* ext/dts/gstdtsdec.h:
Add support for "audio/x-private1-dts" as used by flupsparse. Most
changes adapted from a52dec.
This commit is contained in:
Sebastian Dröge 2007-12-12 04:11:15 +00:00
parent ddea6c306e
commit 4d9802a3ac
3 changed files with 108 additions and 5 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2007-12-12 Sebastian Dröge <slomo@circular-chaos.org>
* ext/dts/gstdtsdec.c: (gst_dtsdec_init),
(gst_dtsdec_sink_setcaps), (gst_dtsdec_chain_raw),
(gst_dtsdec_chain):
* ext/dts/gstdtsdec.h:
Add support for "audio/x-private1-dts" as used by flupsparse. Most
changes adapted from a52dec.
2007-12-11 David Schleef <ds@schleef.org>
* sys/glsink/Makefile.am:

103
ext/dts/gstdtsdec.c
View file

@ -50,11 +50,10 @@ enum
ARG_0,
ARG_DRC
};
static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-dts")
GST_STATIC_CAPS ("audio/x-dts;" "audio/x-private1-dts")
);
#if defined(LIBDTS_FIXED)
@ -85,6 +84,7 @@ static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
GST_BOILERPLATE (GstDtsDec, gst_dtsdec, GstElement, GST_TYPE_ELEMENT);
static gboolean gst_dtsdec_sink_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_dtsdec_sink_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_dtsdec_chain (GstPad * pad, GstBuffer * buf);
static GstStateChangeReturn gst_dtsdec_change_state (GstElement * element,
@ -147,6 +147,8 @@ static void
gst_dtsdec_init (GstDtsDec * dtsdec, GstDtsDecClass * g_class)
{
dtsdec->sinkpad = gst_pad_new_from_static_template (&sink_factory, "sink");
gst_pad_set_setcaps_function (dtsdec->sinkpad,
GST_DEBUG_FUNCPTR (gst_dtsdec_sink_setcaps));
gst_pad_set_chain_function (dtsdec->sinkpad,
GST_DEBUG_FUNCPTR (gst_dtsdec_chain));
gst_pad_set_event_function (dtsdec->sinkpad,
@ -335,6 +337,24 @@ gst_dtsdec_sink_event (GstPad * pad, GstEvent * event)
return ret;
}
static gboolean
gst_dtsdec_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstDtsDec *dts = GST_DTSDEC (gst_pad_get_parent (pad));
GstStructure *structure;
structure = gst_caps_get_structure (caps, 0);
if (structure && gst_structure_has_name (structure, "audio/x-private1-dts"))
dts->dvdmode = TRUE;
else
dts->dvdmode = FALSE;
gst_object_unref (dts);
return TRUE;
}
static void
gst_dtsdec_update_streaminfo (GstDtsDec * dts)
{
@ -482,7 +502,7 @@ gst_dtsdec_handle_frame (GstDtsDec * dts, guint8 * data,
}
static GstFlowReturn
gst_dtsdec_chain (GstPad * pad, GstBuffer * buf)
gst_dtsdec_chain_raw (GstPad * pad, GstBuffer * buf)
{
GstDtsDec *dts;
guint8 *data;
@ -490,7 +510,7 @@ gst_dtsdec_chain (GstPad * pad, GstBuffer * buf)
gint length, flags, sample_rate, bit_rate, frame_length;
GstFlowReturn result = GST_FLOW_OK;
dts = GST_DTSDEC (gst_pad_get_parent (pad));
dts = GST_DTSDEC (GST_PAD_PARENT (pad));
if (dts->cache) {
buf = gst_buffer_join (dts->cache, buf);
@ -533,11 +553,84 @@ gst_dtsdec_chain (GstPad * pad, GstBuffer * buf)
}
gst_buffer_unref (buf);
gst_object_unref (dts);
return result;
}
static GstFlowReturn
gst_dtsdec_chain (GstPad * pad, GstBuffer * buf)
{
GstFlowReturn res = GST_FLOW_OK;
GstDtsDec *dts = GST_DTSDEC (GST_PAD_PARENT (pad));
gint first_access;
if (dts->dvdmode) {
gint size = GST_BUFFER_SIZE (buf);
guint8 *data = GST_BUFFER_DATA (buf);
gint offset, len;
GstBuffer *subbuf;
if (size < 2)
goto not_enough_data;
first_access = (data[0] << 8) | data[1];
/* Skip the first_access header */
offset = 2;
if (first_access > 1) {
/* Length of data before first_access */
len = first_access - 1;
if (len <= 0 || offset + len > size)
goto bad_first_access_parameter;
subbuf = gst_buffer_create_sub (buf, offset, len);
GST_BUFFER_TIMESTAMP (subbuf) = GST_CLOCK_TIME_NONE;
res = gst_dtsdec_chain_raw (pad, subbuf);
if (res != GST_FLOW_OK)
goto done;
offset += len;
len = size - offset;
if (len > 0) {
subbuf = gst_buffer_create_sub (buf, offset, len);
GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf);
res = gst_dtsdec_chain_raw (pad, subbuf);
}
} else {
/* first_access = 0 or 1, so if there's a timestamp it applies
* to the first byte */
subbuf = gst_buffer_create_sub (buf, offset, size - offset);
GST_BUFFER_TIMESTAMP (subbuf) = GST_BUFFER_TIMESTAMP (buf);
res = gst_dtsdec_chain_raw (pad, subbuf);
}
} else {
res = gst_dtsdec_chain_raw (pad, buf);
}
done:
return res;
/* ERRORS */
not_enough_data:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dts), STREAM, DECODE, (NULL),
("Insufficient data in buffer. Can't determine first_acess"));
return GST_FLOW_ERROR;
}
bad_first_access_parameter:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dts), STREAM, DECODE, (NULL),
("Bad first_access parameter (%d) in buffer", first_access));
return GST_FLOW_ERROR;
}
}
static GstStateChangeReturn
gst_dtsdec_change_state (GstElement * element, GstStateChange transition)
{

1
ext/dts/gstdtsdec.h
View file

@ -59,6 +59,7 @@ struct _GstDtsDec {
gboolean dynamic_range_compression;
sample_t *samples;
dts_state_t *state;
gboolean dvdmode;
/* Data left over from the previous buffer */
GstBuffer *cache;