gstreamer/ext/vorbis/vorbisdec.c
Thomas Vander Stichele eec80f9dc7 plug memleak in oggdemux, fix format strings in vorbisdec
Original commit message from CVS:
plug memleak in oggdemux, fix format strings in vorbisdec
2005-07-08 13:35:04 +00:00

807 lines
22 KiB
C

/* GStreamer
* Copyright (C) 2004 Benjamin Otte <in7y118@public.uni-hamburg.de>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "vorbisdec.h"
#include <string.h>
#include <gst/tag/tag.h>
#include <gst/audio/multichannel.h>
GST_DEBUG_CATEGORY_EXTERN (vorbisdec_debug);
#define GST_CAT_DEFAULT vorbisdec_debug
static GstElementDetails vorbis_dec_details = {
"VorbisDec",
"Codec/Decoder/Audio",
"decode raw vorbis streams to float audio",
"Benjamin Otte <in7y118@public.uni-hamburg.de>",
};
/* Filter signals and args */
enum
{
/* FILL ME */
LAST_SIGNAL
};
enum
{
ARG_0
};
static GstStaticPadTemplate vorbis_dec_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-raw-float, "
"rate = (int) [ 8000, 50000 ], "
"channels = (int) [ 1, 6 ], " "endianness = (int) BYTE_ORDER, "
/* no ifdef in macros, please
#ifdef GST_VORBIS_DEC_SEQUENTIAL
"layout = \"sequential\", "
#endif
*/
"width = (int) 32, " "buffer-frames = (int) 0")
);
static GstStaticPadTemplate vorbis_dec_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("audio/x-vorbis")
);
GST_BOILERPLATE (GstVorbisDec, gst_vorbis_dec, GstElement, GST_TYPE_ELEMENT);
static gboolean vorbis_dec_sink_event (GstPad * pad, GstEvent * event);
static GstFlowReturn vorbis_dec_chain (GstPad * pad, GstBuffer * buffer);
static GstElementStateReturn vorbis_dec_change_state (GstElement * element);
#if 0
static const GstFormat *vorbis_dec_get_formats (GstPad * pad);
#endif
static gboolean vorbis_dec_src_event (GstPad * pad, GstEvent * event);
static gboolean vorbis_dec_src_query (GstPad * pad, GstQuery * query);
static gboolean vorbis_dec_convert (GstPad * pad,
GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value);
static gboolean vorbis_dec_sink_query (GstPad * pad, GstQuery * query);
static void
gst_vorbis_dec_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&vorbis_dec_src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&vorbis_dec_sink_factory));
gst_element_class_set_details (element_class, &vorbis_dec_details);
}
static void
gst_vorbis_dec_class_init (GstVorbisDecClass * klass)
{
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
gstelement_class->change_state = vorbis_dec_change_state;
}
#if 0
static const GstFormat *
vorbis_dec_get_formats (GstPad * pad)
{
static GstFormat src_formats[] = {
GST_FORMAT_BYTES,
GST_FORMAT_DEFAULT, /* samples in the audio case */
GST_FORMAT_TIME,
0
};
static GstFormat sink_formats[] = {
/*GST_FORMAT_BYTES, */
GST_FORMAT_TIME,
GST_FORMAT_DEFAULT, /* granulepos or samples */
0
};
return (GST_PAD_IS_SRC (pad) ? src_formats : sink_formats);
}
#endif
#if 0
static const GstEventMask *
vorbis_get_event_masks (GstPad * pad)
{
static const GstEventMask vorbis_dec_src_event_masks[] = {
{GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_FLUSH},
{0,}
};
return vorbis_dec_src_event_masks;
}
#endif
static const GstQueryType *
vorbis_get_query_types (GstPad * pad)
{
static const GstQueryType vorbis_dec_src_query_types[] = {
GST_QUERY_POSITION,
0
};
return vorbis_dec_src_query_types;
}
static void
gst_vorbis_dec_init (GstVorbisDec * dec)
{
dec->sinkpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&vorbis_dec_sink_factory), "sink");
gst_pad_set_event_function (dec->sinkpad, vorbis_dec_sink_event);
gst_pad_set_chain_function (dec->sinkpad, vorbis_dec_chain);
gst_pad_set_query_function (dec->sinkpad, vorbis_dec_sink_query);
gst_element_add_pad (GST_ELEMENT (dec), dec->sinkpad);
dec->srcpad =
gst_pad_new_from_template (gst_static_pad_template_get
(&vorbis_dec_src_factory), "src");
gst_pad_set_event_function (dec->srcpad, vorbis_dec_src_event);
gst_pad_set_query_type_function (dec->srcpad, vorbis_get_query_types);
gst_pad_set_query_function (dec->srcpad, vorbis_dec_src_query);
gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad);
}
static gboolean
vorbis_dec_convert (GstPad * pad,
GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value)
{
gboolean res = TRUE;
GstVorbisDec *dec;
guint64 scale = 1;
dec = GST_VORBIS_DEC (GST_PAD_PARENT (pad));
if (dec->packetno < 1)
return FALSE;
if (src_format == *dest_format) {
*dest_value = src_value;
return TRUE;
}
if (dec->sinkpad == pad &&
(src_format == GST_FORMAT_BYTES || *dest_format == GST_FORMAT_BYTES))
return FALSE;
switch (src_format) {
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
scale = sizeof (float) * dec->vi.channels;
case GST_FORMAT_DEFAULT:
*dest_value = scale * (src_value * dec->vi.rate / GST_SECOND);
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_DEFAULT:
switch (*dest_format) {
case GST_FORMAT_BYTES:
*dest_value = src_value * sizeof (float) * dec->vi.channels;
break;
case GST_FORMAT_TIME:
*dest_value = src_value * GST_SECOND / dec->vi.rate;
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_DEFAULT:
*dest_value = src_value / (sizeof (float) * dec->vi.channels);
break;
case GST_FORMAT_TIME:
*dest_value = src_value * GST_SECOND /
(dec->vi.rate * sizeof (float) * dec->vi.channels);
break;
default:
res = FALSE;
}
break;
default:
res = FALSE;
}
return res;
}
static gboolean
vorbis_dec_src_query (GstPad * pad, GstQuery * query)
{
gint64 granulepos;
GstVorbisDec *dec;
gboolean res;
dec = GST_VORBIS_DEC (GST_PAD_PARENT (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
GstFormat format;
gint64 value, total;
/* query peer for total length */
if (!(res = gst_pad_query (GST_PAD_PEER (dec->sinkpad), query)))
goto error;
granulepos = dec->granulepos;
gst_query_parse_position (query, &format, NULL, &total);
/* and convert to the final format */
if (!(res =
vorbis_dec_convert (pad, GST_FORMAT_DEFAULT, granulepos, &format,
&value)))
goto error;
gst_query_set_position (query, format, value, total);
GST_LOG_OBJECT (dec,
"query %u: peer returned granulepos: %llu - we return %llu (format %u)",
query, granulepos, value, format);
break;
}
case GST_QUERY_CONVERT:
{
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
if (!(res =
vorbis_dec_convert (pad, src_fmt, src_val, &dest_fmt, &dest_val)))
goto error;
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
break;
}
default:
res = FALSE;
break;
}
return res;
error:
{
GST_DEBUG ("error handling event");
return res;
}
}
static gboolean
vorbis_dec_sink_query (GstPad * pad, GstQuery * query)
{
GstVorbisDec *dec;
gboolean res;
dec = GST_VORBIS_DEC (GST_PAD_PARENT (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONVERT:
{
GstFormat src_fmt, dest_fmt;
gint64 src_val, dest_val;
gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
if (!(res =
vorbis_dec_convert (pad, src_fmt, src_val, &dest_fmt, &dest_val)))
goto error;
gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
break;
}
default:
res = FALSE;
break;
}
error:
return res;
}
static gboolean
vorbis_dec_src_event (GstPad * pad, GstEvent * event)
{
gboolean res = TRUE;
GstVorbisDec *dec = GST_VORBIS_DEC (GST_PAD_PARENT (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:{
gint64 value;
GstFormat my_format = GST_FORMAT_TIME;
/* convert to time */
res = vorbis_dec_convert (pad, GST_EVENT_SEEK_FORMAT (event),
GST_EVENT_SEEK_OFFSET (event), &my_format, &value);
if (res) {
GstEvent *real_seek = gst_event_new_seek (
(GST_EVENT_SEEK_TYPE (event) & ~GST_SEEK_FORMAT_MASK) |
GST_FORMAT_TIME, value);
res = gst_pad_send_event (GST_PAD_PEER (dec->sinkpad), real_seek);
}
gst_event_unref (event);
break;
}
default:
res = gst_pad_event_default (pad, event);
break;
}
return res;
}
static gboolean
vorbis_dec_sink_event (GstPad * pad, GstEvent * event)
{
gint64 start_value, end_value, time, bytes;
gboolean ret = TRUE;
GstVorbisDec *dec;
dec = GST_VORBIS_DEC (GST_PAD_PARENT (pad));
GST_LOG_OBJECT (dec, "handling event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_DISCONTINUOUS:
GST_STREAM_LOCK (pad);
if (gst_event_discont_get_value (event, GST_FORMAT_DEFAULT,
(gint64 *) & start_value, &end_value)) {
dec->granulepos = start_value;
GST_DEBUG_OBJECT (dec,
"setting granuleposition to %" G_GUINT64_FORMAT " after discont",
start_value);
} else {
if (gst_event_discont_get_value (event, GST_FORMAT_TIME,
(gint64 *) & start_value, &end_value)) {
dec->granulepos = start_value * dec->vi.rate / GST_SECOND;
GST_DEBUG_OBJECT (dec,
"setting granuleposition to %" G_GUINT64_FORMAT " after discont",
dec->granulepos);
} else {
GST_WARNING_OBJECT (dec,
"discont event didn't include offset, we might set it wrong now");
dec->granulepos = -1;
}
}
GST_DEBUG ("vd: discont %" G_GUINT64_FORMAT, dec->granulepos);
dec->granulepos = -1;
if (dec->packetno < 3) {
if (dec->granulepos != 0)
GST_ELEMENT_ERROR (dec, STREAM, DECODE, (NULL),
("can't handle discont before parsing first 3 packets"));
dec->packetno = 0;
#if 0
gst_pad_push_event (dec->srcpad, gst_event_new_discontinuous (FALSE,
GST_FORMAT_TIME, (guint64) 0, GST_FORMAT_DEFAULT,
(guint64) 0, GST_FORMAT_BYTES, (guint64) 0, 0));
#endif
gst_event_ref (event);
gst_pad_push_event (dec->srcpad, event);
} else {
GstFormat time_format, default_format, bytes_format;
time_format = GST_FORMAT_TIME;
default_format = GST_FORMAT_DEFAULT;
bytes_format = GST_FORMAT_BYTES;
dec->packetno = 3;
/* if one of them works, all of them work */
if (vorbis_dec_convert (dec->srcpad, GST_FORMAT_DEFAULT,
dec->granulepos, &time_format, &time)
&& vorbis_dec_convert (dec->srcpad, GST_FORMAT_DEFAULT,
dec->granulepos, &bytes_format, &bytes)) {
gst_event_ref (event);
gst_pad_push_event (dec->srcpad, event);
/*
gst_pad_push_event (dec->srcpad,
gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME,
time, GST_FORMAT_DEFAULT, dec->granulepos,
GST_FORMAT_BYTES, bytes, 0));
*/
} else {
GST_ERROR_OBJECT (dec,
"failed to parse data for DISCONT event, not sending any");
gst_event_ref (event);
gst_pad_push_event (dec->srcpad, event);
}
#ifdef HAVE_VORBIS_SYNTHESIS_RESTART
vorbis_synthesis_restart (&dec->vd);
#endif
}
GST_STREAM_UNLOCK (pad);
gst_event_unref (event);
break;
default:
ret = gst_pad_event_default (pad, event);
break;
}
return ret;
}
static GstFlowReturn
vorbis_handle_comment_packet (GstVorbisDec * vd, ogg_packet * packet)
{
gchar *encoder = NULL;
GstMessage *message;
GstTagList *list;
GstBuffer *buf;
GST_DEBUG ("parsing comment packet");
buf = gst_buffer_new_and_alloc (packet->bytes);
GST_BUFFER_DATA (buf) = packet->packet;
list =
gst_tag_list_from_vorbiscomment_buffer (buf, (guint8 *) "\003vorbis", 7,
&encoder);
gst_buffer_unref (buf);
if (!list) {
GST_ERROR_OBJECT (vd, "couldn't decode comments");
list = gst_tag_list_new ();
}
if (encoder) {
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_ENCODER, encoder, NULL);
g_free (encoder);
}
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_ENCODER_VERSION, vd->vi.version,
GST_TAG_AUDIO_CODEC, "Vorbis", NULL);
if (vd->vi.bitrate_upper > 0)
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_MAXIMUM_BITRATE, (guint) vd->vi.bitrate_upper, NULL);
if (vd->vi.bitrate_nominal > 0)
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_NOMINAL_BITRATE, (guint) vd->vi.bitrate_nominal, NULL);
if (vd->vi.bitrate_lower > 0)
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_MINIMUM_BITRATE, (guint) vd->vi.bitrate_lower, NULL);
message = gst_message_new_tag ((GstObject *) vd, list);
gst_element_post_message (GST_ELEMENT (vd), message);
return GST_FLOW_OK;
}
static GstFlowReturn
vorbis_handle_type_packet (GstVorbisDec * vd, ogg_packet * packet)
{
GstCaps *caps;
const GstAudioChannelPosition *pos = NULL;
/* done */
vorbis_synthesis_init (&vd->vd, &vd->vi);
vorbis_block_init (&vd->vd, &vd->vb);
caps = gst_caps_new_simple ("audio/x-raw-float",
"rate", G_TYPE_INT, vd->vi.rate,
"channels", G_TYPE_INT, vd->vi.channels,
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"width", G_TYPE_INT, 32, "buffer-frames", G_TYPE_INT, 0, NULL);
switch (vd->vi.channels) {
case 1:
case 2:
/* nothing */
break;
case 3:{
static GstAudioChannelPosition pos3[] = {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT
};
pos = pos3;
break;
}
case 4:{
static GstAudioChannelPosition pos4[] = {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT
};
pos = pos4;
break;
}
case 5:{
static GstAudioChannelPosition pos5[] = {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT
};
pos = pos5;
break;
}
case 6:{
static GstAudioChannelPosition pos6[] = {
GST_AUDIO_CHANNEL_POSITION_FRONT_LEFT,
GST_AUDIO_CHANNEL_POSITION_FRONT_CENTER,
GST_AUDIO_CHANNEL_POSITION_FRONT_RIGHT,
GST_AUDIO_CHANNEL_POSITION_REAR_LEFT,
GST_AUDIO_CHANNEL_POSITION_REAR_RIGHT,
GST_AUDIO_CHANNEL_POSITION_LFE
};
pos = pos6;
break;
}
default:
goto channel_count_error;
}
if (pos) {
gst_audio_set_channel_positions (gst_caps_get_structure (caps, 0), pos);
}
gst_pad_set_caps (vd->srcpad, caps);
gst_caps_unref (caps);
vd->initialized = TRUE;
return GST_FLOW_OK;
/* ERROR */
channel_count_error:
{
gst_caps_unref (caps);
GST_ELEMENT_ERROR (vd, STREAM, NOT_IMPLEMENTED, (NULL),
("Unsupported channel count %d", vd->vi.channels));
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
vorbis_handle_header_packet (GstVorbisDec * vd, ogg_packet * packet)
{
GstFlowReturn res;
GST_DEBUG ("parsing header packet");
/* Packetno = 0 if the first byte is exactly 0x01 */
packet->b_o_s = (packet->packet[0] == 0x1) ? 1 : 0;
if (vorbis_synthesis_headerin (&vd->vi, &vd->vc, packet))
goto header_read_error;
switch (packet->packetno) {
case 1:
res = vorbis_handle_comment_packet (vd, packet);
break;
case 2:
res = vorbis_handle_type_packet (vd, packet);
break;
default:
/* ignore */
res = GST_FLOW_OK;
break;
}
return res;
/* ERRORS */
header_read_error:
{
GST_ELEMENT_ERROR (GST_ELEMENT (vd), STREAM, DECODE,
(NULL), ("couldn't read header packet"));
return GST_FLOW_ERROR;
}
}
static void
copy_samples (float *out, float **in, guint samples, gint channels)
{
gint i, j;
#ifdef GST_VORBIS_DEC_SEQUENTIAL
for (i = 0; i < channels; i++) {
memcpy (out, in[i], samples * sizeof (float));
out += samples;
}
#else
for (j = 0; j < samples; j++) {
for (i = 0; i < channels; i++) {
*out++ = in[i][j];
}
}
#endif
}
static GstFlowReturn
vorbis_handle_data_packet (GstVorbisDec * vd, ogg_packet * packet)
{
float **pcm;
guint sample_count;
GstFlowReturn result;
if (!vd->initialized)
goto not_initialized;
/* normal data packet */
if (vorbis_synthesis (&vd->vb, packet))
goto could_not_read;
if (vorbis_synthesis_blockin (&vd->vd, &vd->vb) < 0)
goto not_accepted;
sample_count = vorbis_synthesis_pcmout (&vd->vd, &pcm);
if (sample_count > 0) {
GstBuffer *out;
result = gst_pad_alloc_buffer (vd->srcpad, GST_BUFFER_OFFSET_NONE,
sample_count * vd->vi.channels * sizeof (float),
GST_PAD_CAPS (vd->srcpad), &out);
if (result == GST_FLOW_OK) {
float *out_data = (float *) GST_BUFFER_DATA (out);
copy_samples (out_data, pcm, sample_count, vd->vi.channels);
GST_BUFFER_OFFSET (out) = vd->granulepos;
GST_BUFFER_OFFSET_END (out) = vd->granulepos + sample_count;
if (vd->granulepos != -1)
GST_BUFFER_TIMESTAMP (out) = vd->granulepos * GST_SECOND / vd->vi.rate;
else
GST_BUFFER_TIMESTAMP (out) = -1;
GST_BUFFER_DURATION (out) = sample_count * GST_SECOND / vd->vi.rate;
result = gst_pad_push (vd->srcpad, out);
if (vd->granulepos != -1)
vd->granulepos += sample_count;
} else {
/* no buffer.. */
result = GST_FLOW_OK;
}
vorbis_synthesis_read (&vd->vd, sample_count);
} else {
/* no samples.. */
result = GST_FLOW_OK;
}
return result;
/* ERRORS */
not_initialized:
{
GST_ELEMENT_ERROR (GST_ELEMENT (vd), STREAM, DECODE,
(NULL), ("no header sent yet (packet no is %d)", packet->packetno));
return GST_FLOW_ERROR;
}
could_not_read:
{
GST_ELEMENT_ERROR (GST_ELEMENT (vd), STREAM, DECODE,
(NULL), ("couldn't read data packet"));
return GST_FLOW_ERROR;
}
not_accepted:
{
GST_ELEMENT_ERROR (GST_ELEMENT (vd), STREAM, DECODE,
(NULL), ("vorbis decoder did not accept data packet"));
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
vorbis_dec_chain (GstPad * pad, GstBuffer * buffer)
{
GstVorbisDec *vd;
ogg_packet packet;
GstFlowReturn result = GST_FLOW_OK;
vd = GST_VORBIS_DEC (GST_PAD_PARENT (pad));
/* make ogg_packet out of the buffer */
packet.packet = GST_BUFFER_DATA (buffer);
packet.bytes = GST_BUFFER_SIZE (buffer);
packet.granulepos = vd->granulepos;
packet.packetno = vd->packetno++;
/*
* FIXME. Is there anyway to know that this is the last packet and
* set e_o_s??
*/
packet.e_o_s = 0;
GST_DEBUG ("vorbis granule: %" G_GUINT64_FORMAT, packet.granulepos);
/* switch depending on packet type */
if (packet.packet[0] & 1) {
if (vd->initialized) {
GST_WARNING_OBJECT (vd, "Ignoring header");
goto done;
}
result = vorbis_handle_header_packet (vd, &packet);
} else {
result = vorbis_handle_data_packet (vd, &packet);
}
GST_DEBUG ("offset end: %" G_GUINT64_FORMAT, GST_BUFFER_OFFSET_END (buffer));
/* granulepos is the last sample in the packet */
if (GST_BUFFER_OFFSET_END_IS_VALID (buffer))
vd->granulepos = GST_BUFFER_OFFSET_END (buffer);;
done:
gst_buffer_unref (buffer);
return result;
}
static GstElementStateReturn
vorbis_dec_change_state (GstElement * element)
{
GstVorbisDec *vd = GST_VORBIS_DEC (element);
GstElementState transition;
GstElementStateReturn res;
transition = GST_STATE_TRANSITION (element);
switch (transition) {
case GST_STATE_NULL_TO_READY:
break;
case GST_STATE_READY_TO_PAUSED:
vorbis_info_init (&vd->vi);
vorbis_comment_init (&vd->vc);
vd->initialized = FALSE;
vd->granulepos = -1;
vd->packetno = 0;
break;
case GST_STATE_PAUSED_TO_PLAYING:
break;
default:
break;
}
res = parent_class->change_state (element);
switch (transition) {
case GST_STATE_PLAYING_TO_PAUSED:
break;
case GST_STATE_PAUSED_TO_READY:
GST_DEBUG_OBJECT (vd, "PAUSED -> READY, clearing vorbis structures");
vorbis_block_clear (&vd->vb);
vorbis_dsp_clear (&vd->vd);
vorbis_comment_clear (&vd->vc);
vorbis_info_clear (&vd->vi);
break;
case GST_STATE_READY_TO_NULL:
break;
default:
break;
}
return res;
}