|
Packit |
971217 |
/* GStreamer
|
|
Packit |
971217 |
* Copyright (C) 2006 Wim Taymans <wim@fluendo.com>
|
|
Packit |
971217 |
*
|
|
Packit |
971217 |
* gstoggaviparse.c: ogg avi stream parser
|
|
Packit |
971217 |
*
|
|
Packit |
971217 |
* This library is free software; you can redistribute it and/or
|
|
Packit |
971217 |
* modify it under the terms of the GNU Library General Public
|
|
Packit |
971217 |
* License as published by the Free Software Foundation; either
|
|
Packit |
971217 |
* version 2 of the License, or (at your option) any later version.
|
|
Packit |
971217 |
*
|
|
Packit |
971217 |
* This library is distributed in the hope that it will be useful,
|
|
Packit |
971217 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
971217 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
971217 |
* Library General Public License for more details.
|
|
Packit |
971217 |
*
|
|
Packit |
971217 |
* You should have received a copy of the GNU Library General Public
|
|
Packit |
971217 |
* License along with this library; if not, write to the
|
|
Packit |
971217 |
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
|
|
Packit |
971217 |
* Boston, MA 02110-1301, USA.
|
|
Packit |
971217 |
*/
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/*
|
|
Packit |
971217 |
* Ogg in AVI is mostly done for vorbis audio. In the codec_data we receive the
|
|
Packit |
971217 |
* first 3 packets of the raw vorbis data. On the sinkpad we receive full-blown Ogg
|
|
Packit |
971217 |
* pages.
|
|
Packit |
971217 |
* Before extracting the packets out of the ogg pages, we push the raw vorbis
|
|
Packit |
971217 |
* header packets to the decoder.
|
|
Packit |
971217 |
* We don't use the incomming timestamps but use the ganulepos on the ogg pages
|
|
Packit |
971217 |
* directly.
|
|
Packit |
971217 |
* This parser only does ogg/vorbis for now.
|
|
Packit |
971217 |
*/
|
|
Packit |
971217 |
|
|
Packit |
971217 |
#ifdef HAVE_CONFIG_H
|
|
Packit |
971217 |
#include "config.h"
|
|
Packit |
971217 |
#endif
|
|
Packit |
971217 |
#include <gst/gst.h>
|
|
Packit |
971217 |
#include <ogg/ogg.h>
|
|
Packit |
971217 |
#include <string.h>
|
|
Packit |
971217 |
|
|
Packit |
971217 |
#include "gstogg.h"
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_DEBUG_CATEGORY_STATIC (gst_ogg_avi_parse_debug);
|
|
Packit |
971217 |
#define GST_CAT_DEFAULT gst_ogg_avi_parse_debug
|
|
Packit |
971217 |
|
|
Packit |
971217 |
#define GST_TYPE_OGG_AVI_PARSE (gst_ogg_avi_parse_get_type())
|
|
Packit |
971217 |
#define GST_OGG_AVI_PARSE(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OGG_AVI_PARSE, GstOggAviParse))
|
|
Packit |
971217 |
#define GST_OGG_AVI_PARSE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OGG_AVI_PARSE, GstOggAviParse))
|
|
Packit |
971217 |
#define GST_IS_OGG_AVI_PARSE(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OGG_AVI_PARSE))
|
|
Packit |
971217 |
#define GST_IS_OGG_AVI_PARSE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OGG_AVI_PARSE))
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static GType gst_ogg_avi_parse_get_type (void);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
typedef struct _GstOggAviParse GstOggAviParse;
|
|
Packit |
971217 |
typedef struct _GstOggAviParseClass GstOggAviParseClass;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
struct _GstOggAviParse
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstElement element;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GstPad *sinkpad;
|
|
Packit |
971217 |
GstPad *srcpad;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gboolean discont;
|
|
Packit |
971217 |
gint serial;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ogg_sync_state sync;
|
|
Packit |
971217 |
ogg_stream_state stream;
|
|
Packit |
971217 |
};
|
|
Packit |
971217 |
|
|
Packit |
971217 |
struct _GstOggAviParseClass
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstElementClass parent_class;
|
|
Packit |
971217 |
};
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static void gst_ogg_avi_parse_base_init (gpointer g_class);
|
|
Packit |
971217 |
static void gst_ogg_avi_parse_class_init (GstOggAviParseClass * klass);
|
|
Packit |
971217 |
static void gst_ogg_avi_parse_init (GstOggAviParse * ogg);
|
|
Packit |
971217 |
static GstElementClass *parent_class = NULL;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static GType
|
|
Packit |
971217 |
gst_ogg_avi_parse_get_type (void)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
static GType ogg_avi_parse_type = 0;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
if (!ogg_avi_parse_type) {
|
|
Packit |
971217 |
static const GTypeInfo ogg_avi_parse_info = {
|
|
Packit |
971217 |
sizeof (GstOggAviParseClass),
|
|
Packit |
971217 |
gst_ogg_avi_parse_base_init,
|
|
Packit |
971217 |
NULL,
|
|
Packit |
971217 |
(GClassInitFunc) gst_ogg_avi_parse_class_init,
|
|
Packit |
971217 |
NULL,
|
|
Packit |
971217 |
NULL,
|
|
Packit |
971217 |
sizeof (GstOggAviParse),
|
|
Packit |
971217 |
0,
|
|
Packit |
971217 |
(GInstanceInitFunc) gst_ogg_avi_parse_init,
|
|
Packit |
971217 |
};
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ogg_avi_parse_type =
|
|
Packit |
971217 |
g_type_register_static (GST_TYPE_ELEMENT, "GstOggAviParse",
|
|
Packit |
971217 |
&ogg_avi_parse_info, 0);
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
return ogg_avi_parse_type;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
enum
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
PROP_0
|
|
Packit |
971217 |
};
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static GstStaticPadTemplate ogg_avi_parse_src_template_factory =
|
|
Packit |
971217 |
GST_STATIC_PAD_TEMPLATE ("src",
|
|
Packit |
971217 |
GST_PAD_SRC,
|
|
Packit |
971217 |
GST_PAD_ALWAYS,
|
|
Packit |
971217 |
GST_STATIC_CAPS ("audio/x-vorbis")
|
|
Packit |
971217 |
);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static GstStaticPadTemplate ogg_avi_parse_sink_template_factory =
|
|
Packit |
971217 |
GST_STATIC_PAD_TEMPLATE ("sink",
|
|
Packit |
971217 |
GST_PAD_SINK,
|
|
Packit |
971217 |
GST_PAD_ALWAYS,
|
|
Packit |
971217 |
GST_STATIC_CAPS ("application/x-ogg-avi")
|
|
Packit |
971217 |
);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static void gst_ogg_avi_parse_finalize (GObject * object);
|
|
Packit |
971217 |
static GstStateChangeReturn gst_ogg_avi_parse_change_state (GstElement *
|
|
Packit |
971217 |
element, GstStateChange transition);
|
|
Packit |
971217 |
static gboolean gst_ogg_avi_parse_event (GstPad * pad, GstObject * parent,
|
|
Packit |
971217 |
GstEvent * event);
|
|
Packit |
971217 |
static GstFlowReturn gst_ogg_avi_parse_chain (GstPad * pad, GstObject * parent,
|
|
Packit |
971217 |
GstBuffer * buffer);
|
|
Packit |
971217 |
static gboolean gst_ogg_avi_parse_setcaps (GstPad * pad, GstCaps * caps);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static void
|
|
Packit |
971217 |
gst_ogg_avi_parse_base_init (gpointer g_class)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_element_class_set_static_metadata (element_class,
|
|
Packit |
971217 |
"Ogg AVI parser", "Codec/Parser",
|
|
Packit |
971217 |
"parse an ogg avi stream into pages (info about ogg: http://xiph.org)",
|
|
Packit |
971217 |
"Wim Taymans <wim@fluendo.com>");
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_element_class_add_static_pad_template (element_class,
|
|
Packit |
971217 |
&ogg_avi_parse_sink_template_factory);
|
|
Packit |
971217 |
gst_element_class_add_static_pad_template (element_class,
|
|
Packit |
971217 |
&ogg_avi_parse_src_template_factory);
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static void
|
|
Packit |
971217 |
gst_ogg_avi_parse_class_init (GstOggAviParseClass * klass)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
|
|
Packit |
971217 |
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
parent_class = g_type_class_peek_parent (klass);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gstelement_class->change_state = gst_ogg_avi_parse_change_state;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gobject_class->finalize = gst_ogg_avi_parse_finalize;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static void
|
|
Packit |
971217 |
gst_ogg_avi_parse_init (GstOggAviParse * ogg)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
/* create the sink and source pads */
|
|
Packit |
971217 |
ogg->sinkpad =
|
|
Packit |
971217 |
gst_pad_new_from_static_template (&ogg_avi_parse_sink_template_factory,
|
|
Packit |
971217 |
"sink");
|
|
Packit |
971217 |
gst_pad_set_event_function (ogg->sinkpad, gst_ogg_avi_parse_event);
|
|
Packit |
971217 |
gst_pad_set_chain_function (ogg->sinkpad, gst_ogg_avi_parse_chain);
|
|
Packit |
971217 |
gst_element_add_pad (GST_ELEMENT (ogg), ogg->sinkpad);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ogg->srcpad =
|
|
Packit |
971217 |
gst_pad_new_from_static_template (&ogg_avi_parse_src_template_factory,
|
|
Packit |
971217 |
"src");
|
|
Packit |
971217 |
gst_pad_use_fixed_caps (ogg->srcpad);
|
|
Packit |
971217 |
gst_element_add_pad (GST_ELEMENT (ogg), ogg->srcpad);
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static void
|
|
Packit |
971217 |
gst_ogg_avi_parse_finalize (GObject * object)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstOggAviParse *ogg = GST_OGG_AVI_PARSE (object);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_LOG_OBJECT (ogg, "Disposing of object %p", ogg);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ogg_sync_clear (&ogg->sync);
|
|
Packit |
971217 |
ogg_stream_clear (&ogg->stream);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static gboolean
|
|
Packit |
971217 |
gst_ogg_avi_parse_setcaps (GstPad * pad, GstCaps * caps)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstOggAviParse *ogg;
|
|
Packit |
971217 |
GstStructure *structure;
|
|
Packit |
971217 |
const GValue *codec_data;
|
|
Packit |
971217 |
GstBuffer *buffer;
|
|
Packit |
971217 |
GstMapInfo map;
|
|
Packit |
971217 |
guint8 *ptr;
|
|
Packit |
971217 |
gsize left;
|
|
Packit |
971217 |
guint32 sizes[3];
|
|
Packit |
971217 |
GstCaps *outcaps;
|
|
Packit |
971217 |
gint i, offs;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ogg = GST_OGG_AVI_PARSE (GST_OBJECT_PARENT (pad));
|
|
Packit |
971217 |
|
|
Packit |
971217 |
structure = gst_caps_get_structure (caps, 0);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* take codec data */
|
|
Packit |
971217 |
codec_data = gst_structure_get_value (structure, "codec_data");
|
|
Packit |
971217 |
if (codec_data == NULL)
|
|
Packit |
971217 |
goto no_data;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* only buffers are valid */
|
|
Packit |
971217 |
if (G_VALUE_TYPE (codec_data) != GST_TYPE_BUFFER)
|
|
Packit |
971217 |
goto wrong_format;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* Now parse the data */
|
|
Packit |
971217 |
buffer = gst_value_get_buffer (codec_data);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* first 22 bytes are bits_per_sample, channel_mask, GUID
|
|
Packit |
971217 |
* Then we get 3 LE guint32 with the 3 header sizes
|
|
Packit |
971217 |
* then we get the bytes of the 3 headers. */
|
|
Packit |
971217 |
gst_buffer_map (buffer, &map, GST_MAP_READ);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ptr = map.data;
|
|
Packit |
971217 |
left = map.size;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_LOG_OBJECT (ogg, "configuring codec_data of size %" G_GSIZE_FORMAT, left);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* skip headers */
|
|
Packit |
971217 |
ptr += 22;
|
|
Packit |
971217 |
left -= 22;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* we need at least 12 bytes for the packet sizes of the 3 headers */
|
|
Packit |
971217 |
if (left < 12)
|
|
Packit |
971217 |
goto buffer_too_small;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* read sizes of the 3 headers */
|
|
Packit |
971217 |
sizes[0] = GST_READ_UINT32_LE (ptr);
|
|
Packit |
971217 |
sizes[1] = GST_READ_UINT32_LE (ptr + 4);
|
|
Packit |
971217 |
sizes[2] = GST_READ_UINT32_LE (ptr + 8);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_DEBUG_OBJECT (ogg, "header sizes: %u %u %u", sizes[0], sizes[1],
|
|
Packit |
971217 |
sizes[2]);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
left -= 12;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* and we need at least enough data for all the headers */
|
|
Packit |
971217 |
if (left < sizes[0] + sizes[1] + sizes[2])
|
|
Packit |
971217 |
goto buffer_too_small;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* set caps */
|
|
Packit |
971217 |
outcaps = gst_caps_new_empty_simple ("audio/x-vorbis");
|
|
Packit |
971217 |
gst_pad_set_caps (ogg->srcpad, outcaps);
|
|
Packit |
971217 |
gst_caps_unref (outcaps);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* copy header data */
|
|
Packit |
971217 |
offs = 34;
|
|
Packit |
971217 |
for (i = 0; i < 3; i++) {
|
|
Packit |
971217 |
GstBuffer *out;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* now output the raw vorbis header packets */
|
|
Packit |
971217 |
out = gst_buffer_copy_region (buffer, GST_BUFFER_COPY_ALL, offs, sizes[i]);
|
|
Packit |
971217 |
gst_pad_push (ogg->srcpad, out);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
offs += sizes[i];
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
gst_buffer_unmap (buffer, &map);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
return TRUE;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* ERRORS */
|
|
Packit |
971217 |
no_data:
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GST_DEBUG_OBJECT (ogg, "no codec_data found in caps");
|
|
Packit |
971217 |
return FALSE;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
wrong_format:
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GST_DEBUG_OBJECT (ogg, "codec_data is not a buffer");
|
|
Packit |
971217 |
return FALSE;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
buffer_too_small:
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GST_DEBUG_OBJECT (ogg, "codec_data is too small");
|
|
Packit |
971217 |
gst_buffer_unmap (buffer, &map);
|
|
Packit |
971217 |
return FALSE;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static gboolean
|
|
Packit |
971217 |
gst_ogg_avi_parse_event (GstPad * pad, GstObject * parent, GstEvent * event)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstOggAviParse *ogg;
|
|
Packit |
971217 |
gboolean ret;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ogg = GST_OGG_AVI_PARSE (parent);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
switch (GST_EVENT_TYPE (event)) {
|
|
Packit |
971217 |
case GST_EVENT_CAPS:
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstCaps *caps;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gst_event_parse_caps (event, &caps);
|
|
Packit |
971217 |
ret = gst_ogg_avi_parse_setcaps (pad, caps);
|
|
Packit |
971217 |
gst_event_unref (event);
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
case GST_EVENT_FLUSH_START:
|
|
Packit |
971217 |
ret = gst_pad_push_event (ogg->srcpad, event);
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
case GST_EVENT_FLUSH_STOP:
|
|
Packit |
971217 |
ogg_sync_reset (&ogg->sync);
|
|
Packit |
971217 |
ogg_stream_reset (&ogg->stream);
|
|
Packit |
971217 |
ogg->discont = TRUE;
|
|
Packit |
971217 |
ret = gst_pad_push_event (ogg->srcpad, event);
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
default:
|
|
Packit |
971217 |
ret = gst_pad_push_event (ogg->srcpad, event);
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
return ret;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static GstFlowReturn
|
|
Packit |
971217 |
gst_ogg_avi_parse_push_packet (GstOggAviParse * ogg, ogg_packet * packet)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstBuffer *buffer;
|
|
Packit |
971217 |
GstFlowReturn result;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* allocate space for header and body */
|
|
Packit |
971217 |
buffer = gst_buffer_new_and_alloc (packet->bytes);
|
|
Packit |
971217 |
gst_buffer_fill (buffer, 0, packet->packet, packet->bytes);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_LOG_OBJECT (ogg, "created buffer %p from page", buffer);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_BUFFER_OFFSET_END (buffer) = packet->granulepos;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
if (ogg->discont) {
|
|
Packit |
971217 |
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
|
|
Packit |
971217 |
ogg->discont = FALSE;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
result = gst_pad_push (ogg->srcpad, buffer);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
return result;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static GstFlowReturn
|
|
Packit |
971217 |
gst_ogg_avi_parse_chain (GstPad * pad, GstObject * parent, GstBuffer * buffer)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstFlowReturn result = GST_FLOW_OK;
|
|
Packit |
971217 |
GstOggAviParse *ogg;
|
|
Packit |
971217 |
guint size;
|
|
Packit |
971217 |
gchar *oggbuf;
|
|
Packit |
971217 |
gint ret = -1;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ogg = GST_OGG_AVI_PARSE (parent);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
size = gst_buffer_get_size (buffer);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
GST_LOG_OBJECT (ogg, "Chain function received buffer of size %d", size);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
if (GST_BUFFER_IS_DISCONT (buffer)) {
|
|
Packit |
971217 |
ogg_sync_reset (&ogg->sync);
|
|
Packit |
971217 |
ogg->discont = TRUE;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* write data to sync layer */
|
|
Packit |
971217 |
oggbuf = ogg_sync_buffer (&ogg->sync, size);
|
|
Packit |
971217 |
gst_buffer_extract (buffer, 0, oggbuf, size);
|
|
Packit |
971217 |
ogg_sync_wrote (&ogg->sync, size);
|
|
Packit |
971217 |
gst_buffer_unref (buffer);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* try to get as many packets out of the stream as possible */
|
|
Packit |
971217 |
do {
|
|
Packit |
971217 |
ogg_page page;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* try to swap out a page */
|
|
Packit |
971217 |
ret = ogg_sync_pageout (&ogg->sync, &page);
|
|
Packit |
971217 |
if (ret == 0) {
|
|
Packit |
971217 |
GST_DEBUG_OBJECT (ogg, "need more data");
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
} else if (ret == -1) {
|
|
Packit |
971217 |
GST_DEBUG_OBJECT (ogg, "discont in pages");
|
|
Packit |
971217 |
ogg->discont = TRUE;
|
|
Packit |
971217 |
} else {
|
|
Packit |
971217 |
/* new unknown stream, init the ogg stream with the serial number of the
|
|
Packit |
971217 |
* page. */
|
|
Packit |
971217 |
if (ogg->serial == -1) {
|
|
Packit |
971217 |
ogg->serial = ogg_page_serialno (&page);
|
|
Packit |
971217 |
ogg_stream_init (&ogg->stream, ogg->serial);
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* submit page */
|
|
Packit |
971217 |
if (ogg_stream_pagein (&ogg->stream, &page) != 0) {
|
|
Packit |
971217 |
GST_WARNING_OBJECT (ogg, "ogg stream choked on page resetting stream");
|
|
Packit |
971217 |
ogg_sync_reset (&ogg->sync);
|
|
Packit |
971217 |
ogg->discont = TRUE;
|
|
Packit |
971217 |
continue;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
/* try to get as many packets as possible out of the page */
|
|
Packit |
971217 |
do {
|
|
Packit |
971217 |
ogg_packet packet;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ret = ogg_stream_packetout (&ogg->stream, &packet);
|
|
Packit |
971217 |
GST_LOG_OBJECT (ogg, "packetout gave %d", ret);
|
|
Packit |
971217 |
switch (ret) {
|
|
Packit |
971217 |
case 0:
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
case -1:
|
|
Packit |
971217 |
/* out of sync, We mark a DISCONT. */
|
|
Packit |
971217 |
ogg->discont = TRUE;
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
case 1:
|
|
Packit |
971217 |
result = gst_ogg_avi_parse_push_packet (ogg, &packet);
|
|
Packit |
971217 |
if (result != GST_FLOW_OK)
|
|
Packit |
971217 |
goto done;
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
default:
|
|
Packit |
971217 |
GST_WARNING_OBJECT (ogg,
|
|
Packit |
971217 |
"invalid return value %d for ogg_stream_packetout, resetting stream",
|
|
Packit |
971217 |
ret);
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
while (ret != 0);
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
while (ret != 0);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
done:
|
|
Packit |
971217 |
return result;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
static GstStateChangeReturn
|
|
Packit |
971217 |
gst_ogg_avi_parse_change_state (GstElement * element, GstStateChange transition)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GstOggAviParse *ogg;
|
|
Packit |
971217 |
GstStateChangeReturn result = GST_STATE_CHANGE_FAILURE;
|
|
Packit |
971217 |
|
|
Packit |
971217 |
ogg = GST_OGG_AVI_PARSE (element);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
switch (transition) {
|
|
Packit |
971217 |
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
Packit |
971217 |
ogg_sync_init (&ogg->sync);
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
case GST_STATE_CHANGE_READY_TO_PAUSED:
|
|
Packit |
971217 |
ogg_sync_reset (&ogg->sync);
|
|
Packit |
971217 |
ogg_stream_reset (&ogg->stream);
|
|
Packit |
971217 |
ogg->serial = -1;
|
|
Packit |
971217 |
ogg->discont = TRUE;
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
default:
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
result = parent_class->change_state (element, transition);
|
|
Packit |
971217 |
|
|
Packit |
971217 |
switch (transition) {
|
|
Packit |
971217 |
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
case GST_STATE_CHANGE_PAUSED_TO_READY:
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
Packit |
971217 |
ogg_sync_clear (&ogg->sync);
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
default:
|
|
Packit |
971217 |
break;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
return result;
|
|
Packit |
971217 |
}
|
|
Packit |
971217 |
|
|
Packit |
971217 |
gboolean
|
|
Packit |
971217 |
gst_ogg_avi_parse_plugin_init (GstPlugin * plugin)
|
|
Packit |
971217 |
{
|
|
Packit |
971217 |
GST_DEBUG_CATEGORY_INIT (gst_ogg_avi_parse_debug, "oggaviparse", 0,
|
|
Packit |
971217 |
"ogg avi parser");
|
|
Packit |
971217 |
|
|
Packit |
971217 |
return gst_element_register (plugin, "oggaviparse", GST_RANK_PRIMARY,
|
|
Packit |
971217 |
GST_TYPE_OGG_AVI_PARSE);
|
|
Packit |
971217 |
}
|