mirrors/gstreamer
mirrors/gstreamer
1
1
Fork 0
mirror of https://gitlab.freedesktop.org/gstreamer/gstreamer.git synced 2024-12-19 06:46:38 +00:00
Code Issues 1 Projects Releases Wiki Activity
gstreamer/ext/theora/gsttheoradec.c
Tim-Philipp Müller a044b62cf5 theoradec: expose telemetry properties only if libtheora was compiled with --enable-telemetry 
Since this is just a debugging feature and libtheora will usually not be
compiled with that option enabled, we should maybe just hide these properties,
since they won't work anyway, and avoid confusing warnings.

Also rename properties to make them less cryptic.

https://bugzilla.gnome.org/show_bug.cgi?id=628488
2010-10-10 18:20:46 +01:00

1601 lines
45 KiB
C
Raw Blame History

/* 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.
*/
/**
* SECTION:element-theoradec
* @see_also: theoraenc, oggdemux
*
* This element decodes theora streams into raw video
* <ulink url="http://www.theora.org/">Theora</ulink> is a royalty-free
* video codec maintained by the <ulink url="http://www.xiph.org/">Xiph.org
* Foundation</ulink>, based on the VP3 codec.
*
* <refsect2>
* <title>Example pipeline</title>
* |[
* gst-launch -v filesrc location=videotestsrc.ogg ! oggdemux ! theoradec ! xvimagesink
* ]| This example pipeline will decode an ogg stream and decodes the theora video. Refer to
* the theoraenc example to create the ogg file.
* </refsect2>
*
* Last reviewed on 2006-03-01 (0.10.4)
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "gsttheoradec.h"
#include <gst/tag/tag.h>
#include <gst/video/video.h>
#define GST_CAT_DEFAULT theoradec_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define THEORA_DEF_CROP TRUE
#define THEORA_DEF_TELEMETRY_MV 0
#define THEORA_DEF_TELEMETRY_MBMODE 0
#define THEORA_DEF_TELEMETRY_QI 0
#define THEORA_DEF_TELEMETRY_BITS 0
enum
{
PROP_0,
PROP_CROP,
PROP_TELEMETRY_MV,
PROP_TELEMETRY_MBMODE,
PROP_TELEMETRY_QI,
PROP_TELEMETRY_BITS
};
static GstStaticPadTemplate theora_dec_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw-yuv, "
"format = (fourcc) { I420, Y42B, Y444 }, "
"framerate = (fraction) [0/1, MAX], "
"width = (int) [ 1, MAX ], " "height = (int) [ 1, MAX ]")
);
static GstStaticPadTemplate theora_dec_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-theora")
);
GST_BOILERPLATE (GstTheoraDec, gst_theora_dec, GstElement, GST_TYPE_ELEMENT);
static void theora_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
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);
static gboolean theora_dec_src_event (GstPad * pad, GstEvent * event);
static gboolean theora_dec_src_query (GstPad * pad, GstQuery * query);
static gboolean theora_dec_src_convert (GstPad * pad,
GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value);
#if 0
static const GstFormat *theora_get_formats (GstPad * pad);
#endif
#if 0
static const GstEventMask *theora_get_event_masks (GstPad * pad);
#endif
static const GstQueryType *theora_get_query_types (GstPad * pad);
static void
gst_theora_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 (&theora_dec_src_factory));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&theora_dec_sink_factory));
gst_element_class_set_details_simple (element_class,
"Theora video decoder", "Codec/Decoder/Video",
"decode raw theora streams to raw YUV video",
"Benjamin Otte <otte@gnome.org>, Wim Taymans <wim@fluendo.com>");
}
static gboolean
gst_theora_dec_ctl_is_supported (int req)
{
/* should return TH_EFAULT or TH_EINVAL if supported, and TH_EIMPL if not */
return (th_decode_ctl (NULL, req, NULL, 0) != TH_EIMPL);
}
static void
gst_theora_dec_class_init (GstTheoraDecClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
gobject_class->set_property = theora_dec_set_property;
gobject_class->get_property = theora_dec_get_property;
g_object_class_install_property (gobject_class, PROP_CROP,
g_param_spec_boolean ("crop", "Crop",
"Crop the image to the visible region", THEORA_DEF_CROP,
(GParamFlags) G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
if (gst_theora_dec_ctl_is_supported (TH_DECCTL_SET_TELEMETRY_MV)) {
g_object_class_install_property (gobject_class, PROP_TELEMETRY_MV,
g_param_spec_int ("visualize-motion-vectors",
"Visualize motion vectors",
"Show motion vector selection overlaid on image. "
"Value gives a mask for motion vector (MV) modes to show",
0, 0xffff, THEORA_DEF_TELEMETRY_MV,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
if (gst_theora_dec_ctl_is_supported (TH_DECCTL_SET_TELEMETRY_MBMODE)) {
g_object_class_install_property (gobject_class, PROP_TELEMETRY_MBMODE,
g_param_spec_int ("visualize-macroblock-modes",
"Visualize macroblock modes",
"Show macroblock mode selection overlaid on image. "
"Value gives a mask for macroblock (MB) modes to show",
0, 0xffff, THEORA_DEF_TELEMETRY_MBMODE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
if (gst_theora_dec_ctl_is_supported (TH_DECCTL_SET_TELEMETRY_QI)) {
g_object_class_install_property (gobject_class, PROP_TELEMETRY_QI,
g_param_spec_int ("visualize-quantization-modes",
"Visualize adaptive quantization modes",
"Show adaptive quantization mode selection overlaid on image. "
"Value gives a mask for quantization (QI) modes to show",
0, 0xffff, THEORA_DEF_TELEMETRY_QI,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
if (gst_theora_dec_ctl_is_supported (TH_DECCTL_SET_TELEMETRY_BITS)) {
/* FIXME: make this a boolean instead? The value scales the bars so
* they're less wide. Default is to use full width, and anything else
* doesn't seem particularly useful, since the smaller bars just disappear
* then (they almost disappear for a value of 2 already). */
g_object_class_install_property (gobject_class, PROP_TELEMETRY_BITS,
g_param_spec_int ("visualize-bit-usage",
"Visualize bitstream usage breakdown",
"Sets the bitstream breakdown visualization mode. "
"Values influence the width of the bit usage bars to show",
0, 0xff, THEORA_DEF_TELEMETRY_BITS,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
gstelement_class->change_state = theora_dec_change_state;
GST_DEBUG_CATEGORY_INIT (theoradec_debug, "theoradec", 0, "Theora decoder");
}
static void
gst_theora_dec_init (GstTheoraDec * dec, GstTheoraDecClass * g_class)
{
dec->sinkpad =
gst_pad_new_from_static_template (&theora_dec_sink_factory, "sink");
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);
dec->srcpad =
gst_pad_new_from_static_template (&theora_dec_src_factory, "src");
gst_pad_set_event_function (dec->srcpad, theora_dec_src_event);
gst_pad_set_query_type_function (dec->srcpad, theora_get_query_types);
gst_pad_set_query_function (dec->srcpad, theora_dec_src_query);
gst_pad_use_fixed_caps (dec->srcpad);
gst_element_add_pad (GST_ELEMENT (dec), dec->srcpad);
dec->crop = THEORA_DEF_CROP;
dec->telemetry_mv = THEORA_DEF_TELEMETRY_MV;
dec->telemetry_mbmode = THEORA_DEF_TELEMETRY_MBMODE;
dec->telemetry_qi = THEORA_DEF_TELEMETRY_QI;
dec->telemetry_bits = THEORA_DEF_TELEMETRY_BITS;
dec->gather = NULL;
dec->decode = NULL;
dec->queued = NULL;
dec->pendingevents = NULL;
}
static void
gst_theora_dec_reset (GstTheoraDec * dec)
{
dec->need_keyframe = TRUE;
dec->last_timestamp = -1;
dec->discont = TRUE;
dec->frame_nr = -1;
dec->seqnum = gst_util_seqnum_next ();
dec->dropped = 0;
dec->processed = 0;
gst_segment_init (&dec->segment, GST_FORMAT_TIME);
GST_OBJECT_LOCK (dec);
dec->proportion = 1.0;
dec->earliest_time = -1;
GST_OBJECT_UNLOCK (dec);
g_list_foreach (dec->queued, (GFunc) gst_mini_object_unref, NULL);
g_list_free (dec->queued);
dec->queued = NULL;
g_list_foreach (dec->gather, (GFunc) gst_mini_object_unref, NULL);
g_list_free (dec->gather);
dec->gather = NULL;
g_list_foreach (dec->decode, (GFunc) gst_mini_object_unref, NULL);
g_list_free (dec->decode);
dec->decode = NULL;
g_list_foreach (dec->pendingevents, (GFunc) gst_mini_object_unref, NULL);
g_list_free (dec->pendingevents);
dec->pendingevents = NULL;
if (dec->tags) {
gst_tag_list_free (dec->tags);
dec->tags = NULL;
}
}
#if 0
static const GstFormat *
theora_get_formats (GstPad * pad)
{
static GstFormat src_formats[] = {
GST_FORMAT_DEFAULT, /* frames in this case */
GST_FORMAT_TIME,
GST_FORMAT_BYTES,
0
};
static GstFormat sink_formats[] = {
GST_FORMAT_DEFAULT,
GST_FORMAT_TIME,
0
};
return (GST_PAD_IS_SRC (pad) ? src_formats : sink_formats);
}
#endif
#if 0
static const GstEventMask *
theora_get_event_masks (GstPad * pad)
{
static const GstEventMask theora_src_event_masks[] = {
{GST_EVENT_SEEK, GST_SEEK_METHOD_SET | GST_SEEK_FLAG_FLUSH},
{0,}
};
return theora_src_event_masks;
}
#endif
static const GstQueryType *
theora_get_query_types (GstPad * pad)
{
static const GstQueryType theora_src_query_types[] = {
GST_QUERY_POSITION,
GST_QUERY_DURATION,
GST_QUERY_CONVERT,
0
};
return theora_src_query_types;
}
static gboolean
theora_dec_src_convert (GstPad * pad,
GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value)
{
gboolean res = TRUE;
GstTheoraDec *dec;
guint64 scale = 1;
if (src_format == *dest_format) {
*dest_value = src_value;
return TRUE;
}
dec = GST_THEORA_DEC (gst_pad_get_parent (pad));
/* we need the info part before we can done something */
if (!dec->have_header)
goto no_header;
switch (src_format) {
case GST_FORMAT_BYTES:
switch (*dest_format) {
case GST_FORMAT_DEFAULT:
*dest_value = gst_util_uint64_scale_int (src_value, 8,
dec->info.pic_height * dec->info.pic_width * dec->output_bpp);
break;
case GST_FORMAT_TIME:
/* seems like a rather silly conversion, implement me if you like */
default:
res = FALSE;
}
break;
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_BYTES:
scale =
dec->output_bpp * (dec->info.pic_width * dec->info.pic_height) /
8;
case GST_FORMAT_DEFAULT:
*dest_value = scale * gst_util_uint64_scale (src_value,
dec->info.fps_numerator, dec->info.fps_denominator * GST_SECOND);
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_DEFAULT:
switch (*dest_format) {
case GST_FORMAT_TIME:
*dest_value = gst_util_uint64_scale (src_value,
GST_SECOND * dec->info.fps_denominator, dec->info.fps_numerator);
break;
case GST_FORMAT_BYTES:
*dest_value = gst_util_uint64_scale_int (src_value,
dec->output_bpp * dec->info.pic_width * dec->info.pic_height, 8);
break;
default:
res = FALSE;
}
break;
default:
res = FALSE;
}
done:
gst_object_unref (dec);
return res;
/* ERRORS */
no_header:
{
GST_DEBUG_OBJECT (dec, "no header yet, cannot convert");
res = FALSE;
goto done;
}
}
#if 0
static gboolean
theora_dec_sink_convert (GstPad * pad,
GstFormat src_format, gint64 src_value,
GstFormat * dest_format, gint64 * dest_value)
{
gboolean res = TRUE;
GstTheoraDec *dec;
if (src_format == *dest_format) {
*dest_value = src_value;
return TRUE;
}
dec = GST_THEORA_DEC (gst_pad_get_parent (pad));
/* we need the info part before we can done something */
if (!dec->have_header)
goto no_header;
switch (src_format) {
case GST_FORMAT_DEFAULT:
switch (*dest_format) {
case GST_FORMAT_TIME:
*dest_value = _theora_granule_start_time (dec, src_value);
break;
default:
res = FALSE;
}
break;
case GST_FORMAT_TIME:
switch (*dest_format) {
case GST_FORMAT_DEFAULT:
{
guint rest;
/* framecount */
*dest_value = gst_util_uint64_scale (src_value,
dec->info.fps_numerator, GST_SECOND * dec->info.fps_denominator);
/* funny way of calculating granulepos in theora */
rest = *dest_value / dec->info.keyframe_granule_shift;
*dest_value -= rest;
*dest_value <<= dec->granule_shift;
*dest_value += rest;
break;
}
default:
res = FALSE;
break;
}
break;
default:
res = FALSE;
}
done:
gst_object_unref (dec);
return res;
/* ERRORS */
no_header:
{
GST_DEBUG_OBJECT (dec, "no header yet, cannot convert");
res = FALSE;
goto done;
}
}
#endif
static gboolean
theora_dec_src_query (GstPad * pad, GstQuery * query)
{
GstTheoraDec *dec;
gboolean res = FALSE;
dec = GST_THEORA_DEC (gst_pad_get_parent (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_POSITION:
{
gint64 value;
GstFormat format;
gint64 time;
/* parse format */
gst_query_parse_position (query, &format, NULL);
time = dec->last_timestamp;
time = gst_segment_to_stream_time (&dec->segment, GST_FORMAT_TIME, time);
GST_LOG_OBJECT (dec,
"query %p: our time: %" GST_TIME_FORMAT, query, GST_TIME_ARGS (time));
if (!(res =
theora_dec_src_convert (pad, GST_FORMAT_TIME, time, &format,
&value)))
goto error;
gst_query_set_position (query, format, value);
GST_LOG_OBJECT (dec,
"query %p: we return %" G_GINT64_FORMAT " (format %u)", query, value,
format);
break;
}
case GST_QUERY_DURATION:
{
/* forward to peer for total */
res = gst_pad_peer_query (dec->sinkpad, query);
if (!res)
goto error;
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 =
theora_dec_src_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 = gst_pad_query_default (pad, query);
break;
}
done:
gst_object_unref (dec);
return res;
/* ERRORS */
error:
{
GST_DEBUG_OBJECT (dec, "query failed");
goto done;
}
}
static gboolean
theora_dec_src_event (GstPad * pad, GstEvent * event)
{
gboolean res = TRUE;
GstTheoraDec *dec;
dec = GST_THEORA_DEC (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_SEEK:
{
GstFormat format, tformat;
gdouble rate;
GstEvent *real_seek;
GstSeekFlags flags;
GstSeekType cur_type, stop_type;
gint64 cur, stop;
gint64 tcur, tstop;
guint32 seqnum;
gst_event_parse_seek (event, &rate, &format, &flags, &cur_type, &cur,
&stop_type, &stop);
seqnum = gst_event_get_seqnum (event);
gst_event_unref (event);
/* we have to ask our peer to seek to time here as we know
* nothing about how to generate a granulepos from the src
* formats or anything.
*
* First bring the requested format to time
*/
tformat = GST_FORMAT_TIME;
if (!(res = theora_dec_src_convert (pad, format, cur, &tformat, &tcur)))
goto convert_error;
if (!(res = theora_dec_src_convert (pad, format, stop, &tformat, &tstop)))
goto convert_error;
/* then seek with time on the peer */
real_seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
flags, cur_type, tcur, stop_type, tstop);
gst_event_set_seqnum (real_seek, seqnum);
res = gst_pad_push_event (dec->sinkpad, real_seek);
break;
}
case GST_EVENT_QOS:
{
gdouble proportion;
GstClockTimeDiff diff;
GstClockTime timestamp;
gst_event_parse_qos (event, &proportion, &diff, &timestamp);
/* we cannot randomly skip frame decoding since we don't have
* B frames. we can however use the timestamp and diff to not
* push late frames. This would at least save us the time to
* crop/memcpy the data. */
GST_OBJECT_LOCK (dec);
dec->proportion = proportion;
dec->earliest_time = timestamp + diff;
GST_OBJECT_UNLOCK (dec);
GST_DEBUG_OBJECT (dec, "got QoS %" GST_TIME_FORMAT ", %" G_GINT64_FORMAT,
GST_TIME_ARGS (timestamp), diff);
res = gst_pad_push_event (dec->sinkpad, event);
break;
}
default:
res = gst_pad_push_event (dec->sinkpad, event);
break;
}
done:
gst_object_unref (dec);
return res;
/* ERRORS */
convert_error:
{
GST_DEBUG_OBJECT (dec, "could not convert format");
goto done;
}
}
static gboolean
theora_dec_sink_event (GstPad * pad, GstEvent * event)
{
gboolean ret = FALSE;
GstTheoraDec *dec;
dec = GST_THEORA_DEC (gst_pad_get_parent (pad));
GST_LOG_OBJECT (dec, "handling event");
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
ret = gst_pad_push_event (dec->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
gst_theora_dec_reset (dec);
ret = gst_pad_push_event (dec->srcpad, event);
break;
case GST_EVENT_EOS:
ret = gst_pad_push_event (dec->srcpad, event);
break;
case GST_EVENT_NEWSEGMENT:
{
gboolean update;
GstFormat format;
gdouble rate, arate;
gint64 start, stop, time;
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
&start, &stop, &time);
/* we need TIME format */
if (format != GST_FORMAT_TIME)
goto newseg_wrong_format;
GST_DEBUG_OBJECT (dec,
"newsegment: update %d, rate %g, arate %g, start %" GST_TIME_FORMAT
", stop %" GST_TIME_FORMAT ", time %" GST_TIME_FORMAT,
update, rate, arate, GST_TIME_ARGS (start), GST_TIME_ARGS (stop),
GST_TIME_ARGS (time));
/* now configure the values */
gst_segment_set_newsegment_full (&dec->segment, update,
rate, arate, format, start, stop, time);
dec->seqnum = gst_event_get_seqnum (event);
/* We don't forward this unless/until the decoder is initialised */
if (dec->have_header) {
ret = gst_pad_push_event (dec->srcpad, event);
} else {
dec->pendingevents = g_list_append (dec->pendingevents, event);
ret = TRUE;
}
break;
}
case GST_EVENT_TAG:
{
if (dec->have_header)
/* and forward */
ret = gst_pad_push_event (dec->srcpad, event);
else {
/* store it to send once we're initialized */
dec->pendingevents = g_list_append (dec->pendingevents, event);
ret = TRUE;
}
break;
}
default:
ret = gst_pad_push_event (dec->srcpad, event);
break;
}
done:
gst_object_unref (dec);
return ret;
/* ERRORS */
newseg_wrong_format:
{
GST_DEBUG_OBJECT (dec, "received non TIME newsegment");
gst_event_unref (event);
goto done;
}
}
static gboolean
theora_dec_setcaps (GstPad * pad, GstCaps * caps)
{
GstTheoraDec *dec;
GstStructure *s;
const GValue *codec_data;
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);
if ((codec_data = gst_structure_get_value (s, "codec_data"))) {
if (G_VALUE_TYPE (codec_data) == GST_TYPE_BUFFER) {
GstBuffer *buffer;
guint8 *data;
guint size;
guint offset;
buffer = gst_value_get_buffer (codec_data);
offset = 0;
size = GST_BUFFER_SIZE (buffer);
data = GST_BUFFER_DATA (buffer);
while (size > 2) {
guint psize;
GstBuffer *buf;
psize = (data[0] << 8) | data[1];
/* skip header */
data += 2;
size -= 2;
offset += 2;
/* make sure we don't read too much */
psize = MIN (psize, size);
buf = gst_buffer_create_sub (buffer, offset, psize);
/* first buffer is a discont buffer */
if (offset == 2)
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
/* now feed it to the decoder we can ignore the error */
theora_dec_chain (pad, buf);
/* skip the data */
size -= psize;
data += psize;
offset += psize;
}
}
}
gst_object_unref (dec);
return TRUE;
}
static GstFlowReturn
theora_handle_comment_packet (GstTheoraDec * dec, ogg_packet * packet)
{
gchar *encoder = NULL;
GstBuffer *buf;
GstTagList *list;
GST_DEBUG_OBJECT (dec, "parsing comment packet");
buf = gst_buffer_new ();
GST_BUFFER_SIZE (buf) = packet->bytes;
GST_BUFFER_DATA (buf) = packet->packet;
list =
gst_tag_list_from_vorbiscomment_buffer (buf, (guint8 *) "\201theora", 7,
&encoder);
gst_buffer_unref (buf);
if (!list) {
GST_ERROR_OBJECT (dec, "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, dec->info.version_major,
GST_TAG_VIDEO_CODEC, "Theora", NULL);
if (dec->info.target_bitrate > 0) {
gst_tag_list_add (list, GST_TAG_MERGE_REPLACE,
GST_TAG_BITRATE, dec->info.target_bitrate,
GST_TAG_NOMINAL_BITRATE, dec->info.target_bitrate, NULL);
}
dec->tags = list;
return GST_FLOW_OK;
}
static GstFlowReturn
theora_handle_type_packet (GstTheoraDec * dec, ogg_packet * packet)
{
GstCaps *caps;
gint par_num, par_den;
GstFlowReturn ret = GST_FLOW_OK;
GList *walk;
guint32 fourcc;
GST_DEBUG_OBJECT (dec, "fps %d/%d, PAR %d/%d",
dec->info.fps_numerator, dec->info.fps_denominator,
dec->info.aspect_numerator, dec->info.aspect_denominator);
/* calculate par
* the info.aspect_* values reflect PAR;
* 0:x and x:0 are allowed and can be interpreted as 1:1.
*/
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_num == 0 || par_den == 0) {
par_num = par_den = 1;
}
/* theora has:
*
* width/height : dimension of the encoded frame
* pic_width/pic_height : dimension of the visible part
* pic_x/pic_y : offset in encoded frame where visible part starts
*/
GST_DEBUG_OBJECT (dec, "dimension %dx%d, PAR %d/%d", dec->info.pic_width,
dec->info.pic_height, par_num, par_den);
GST_DEBUG_OBJECT (dec, "frame dimension %dx%d, offset %d:%d",
dec->info.pic_width, dec->info.pic_height,
dec->info.pic_x, dec->info.pic_y);
if (dec->info.pixel_fmt == TH_PF_420) {
dec->output_bpp = 12; /* Average bits per pixel. */
fourcc = GST_MAKE_FOURCC ('I', '4', '2', '0');
} else if (dec->info.pixel_fmt == TH_PF_422) {
dec->output_bpp = 16;
fourcc = GST_MAKE_FOURCC ('Y', '4', '2', 'B');
} else if (dec->info.pixel_fmt == TH_PF_444) {
dec->output_bpp = 24;
fourcc = GST_MAKE_FOURCC ('Y', '4', '4', '4');
} else {
GST_ERROR_OBJECT (dec, "Invalid pixel format %d", dec->info.pixel_fmt);
return GST_FLOW_ERROR;
}
if (dec->crop) {
dec->width = dec->info.pic_width;
dec->height = dec->info.pic_height;
dec->offset_x = dec->info.pic_x;
dec->offset_y = dec->info.pic_y;
/* Ensure correct offsets in chroma for formats that need it
* by rounding the offset. libtheora will add proper pixels,
* so no need to handle them ourselves. */
if (dec->offset_x & 1 && dec->info.pixel_fmt != TH_PF_444) {
dec->offset_x--;
dec->width++;
}
if (dec->offset_y & 1 && dec->info.pixel_fmt == TH_PF_420) {
dec->offset_y--;
dec->height++;
}
} else {
/* no cropping, use the encoded dimensions */
dec->width = dec->info.frame_width;
dec->height = dec->info.frame_height;
dec->offset_x = 0;
dec->offset_y = 0;
}
GST_DEBUG_OBJECT (dec, "after fixup frame dimension %dx%d, offset %d:%d",
dec->width, dec->height, dec->offset_x, dec->offset_y);
/* done */
dec->decoder = th_decode_alloc (&dec->info, dec->setup);
if (th_decode_ctl (dec->decoder, TH_DECCTL_SET_TELEMETRY_MV,
&dec->telemetry_mv, sizeof (dec->telemetry_mv)) != TH_EIMPL) {
GST_WARNING_OBJECT (dec, "Could not enable MV visualisation");
}
if (th_decode_ctl (dec->decoder, TH_DECCTL_SET_TELEMETRY_MBMODE,
&dec->telemetry_mbmode, sizeof (dec->telemetry_mbmode)) != TH_EIMPL) {
GST_WARNING_OBJECT (dec, "Could not enable MB mode visualisation");
}
if (th_decode_ctl (dec->decoder, TH_DECCTL_SET_TELEMETRY_QI,
&dec->telemetry_qi, sizeof (dec->telemetry_qi)) != TH_EIMPL) {
GST_WARNING_OBJECT (dec, "Could not enable QI mode visualisation");
}
if (th_decode_ctl (dec->decoder, TH_DECCTL_SET_TELEMETRY_BITS,
&dec->telemetry_bits, sizeof (dec->telemetry_bits)) != TH_EIMPL) {
GST_WARNING_OBJECT (dec, "Could not enable BITS mode visualisation");
}
caps = gst_caps_new_simple ("video/x-raw-yuv",
"format", GST_TYPE_FOURCC, fourcc,
"framerate", GST_TYPE_FRACTION,
dec->info.fps_numerator, dec->info.fps_denominator,
"pixel-aspect-ratio", GST_TYPE_FRACTION, par_num, par_den,
"width", G_TYPE_INT, dec->width, "height", G_TYPE_INT, dec->height,
"color-matrix", G_TYPE_STRING, "sdtv",
"chroma-site", G_TYPE_STRING, "jpeg", NULL);
gst_pad_set_caps (dec->srcpad, caps);
gst_caps_unref (caps);
dec->have_header = TRUE;
if (dec->pendingevents) {
for (walk = dec->pendingevents; walk; walk = g_list_next (walk))
gst_pad_push_event (dec->srcpad, GST_EVENT_CAST (walk->data));
g_list_free (dec->pendingevents);
dec->pendingevents = NULL;
}
if (dec->tags) {
gst_element_found_tags_for_pad (GST_ELEMENT_CAST (dec), dec->srcpad,
dec->tags);
dec->tags = NULL;
}
return ret;
}
static GstFlowReturn
theora_handle_header_packet (GstTheoraDec * dec, ogg_packet * packet)
{
GstFlowReturn res;
int ret;
GST_DEBUG_OBJECT (dec, "parsing header packet");
ret = th_decode_headerin (&dec->info, &dec->comment, &dec->setup, packet);
if (ret < 0)
goto header_read_error;
switch (packet->packet[0]) {
case 0x81:
res = theora_handle_comment_packet (dec, packet);
break;
case 0x82:
res = theora_handle_type_packet (dec, packet);
break;
default:
/* ignore */
g_warning ("unknown theora header packet found");
case 0x80:
/* nothing special, this is the identification header */
res = GST_FLOW_OK;
break;
}
return res;
/* ERRORS */
header_read_error:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL), ("couldn't read header packet"));
return GST_FLOW_ERROR;
}
}
/* returns TRUE if buffer is within segment, else FALSE.
* if Buffer is on segment border, it's timestamp and duration will be clipped */
static gboolean
clip_buffer (GstTheoraDec * dec, GstBuffer * buf)
{
gboolean res = TRUE;
GstClockTime in_ts, in_dur, stop;
gint64 cstart, cstop;
in_ts = GST_BUFFER_TIMESTAMP (buf);
in_dur = GST_BUFFER_DURATION (buf);
GST_LOG_OBJECT (dec,
"timestamp:%" GST_TIME_FORMAT " , duration:%" GST_TIME_FORMAT,
GST_TIME_ARGS (in_ts), GST_TIME_ARGS (in_dur));
/* can't clip without TIME segment */
if (dec->segment.format != GST_FORMAT_TIME)
goto beach;
/* we need a start time */
if (!GST_CLOCK_TIME_IS_VALID (in_ts))
goto beach;
/* generate valid stop, if duration unknown, we have unknown stop */
stop =
GST_CLOCK_TIME_IS_VALID (in_dur) ? (in_ts + in_dur) : GST_CLOCK_TIME_NONE;
/* now clip */
if (!(res = gst_segment_clip (&dec->segment, GST_FORMAT_TIME,
in_ts, stop, &cstart, &cstop)))
goto beach;
/* update timestamp and possibly duration if the clipped stop time is
* valid */
GST_BUFFER_TIMESTAMP (buf) = cstart;
if (GST_CLOCK_TIME_IS_VALID (cstop))
GST_BUFFER_DURATION (buf) = cstop - cstart;
beach:
GST_LOG_OBJECT (dec, "%sdropping", (res ? "not " : ""));
return res;
}
static GstFlowReturn
theora_dec_push_forward (GstTheoraDec * dec, GstBuffer * buf)
{
GstFlowReturn result = GST_FLOW_OK;
if (clip_buffer (dec, buf)) {
if (dec->discont) {
GST_LOG_OBJECT (dec, "setting DISCONT");
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
dec->discont = FALSE;
}
result = gst_pad_push (dec->srcpad, buf);
} else {
gst_buffer_unref (buf);
}
return result;
}
static GstFlowReturn
theora_dec_push_reverse (GstTheoraDec * dec, GstBuffer * buf)
{
GstFlowReturn result = GST_FLOW_OK;
dec->queued = g_list_prepend (dec->queued, buf);
return result;
}
/* Allocate buffer and copy image data into Y444 format */
static GstFlowReturn
theora_handle_image (GstTheoraDec * dec, th_ycbcr_buffer buf, GstBuffer ** out)
{
gint width, height, stride;
GstFlowReturn result;
int i, plane;
GstVideoFormat format;
guint8 *dest, *src;
switch (dec->info.pixel_fmt) {
case TH_PF_444:
format = GST_VIDEO_FORMAT_Y444;
break;
case TH_PF_420:
format = GST_VIDEO_FORMAT_I420;
break;
case TH_PF_422:
format = GST_VIDEO_FORMAT_Y42B;
break;
default:
g_assert_not_reached ();
}
result =
gst_pad_alloc_buffer_and_set_caps (dec->srcpad, GST_BUFFER_OFFSET_NONE,
gst_video_format_get_size (format, dec->width, dec->height),
GST_PAD_CAPS (dec->srcpad), out);
if (G_UNLIKELY (result != GST_FLOW_OK)) {
GST_DEBUG_OBJECT (dec, "could not get buffer, reason: %s",
gst_flow_get_name (result));
return result;
}
for (plane = 0; plane < 3; plane++) {
width = gst_video_format_get_component_width (format, plane, dec->width);
height = gst_video_format_get_component_height (format, plane, dec->height);
stride = gst_video_format_get_row_stride (format, plane, dec->width);
dest =
GST_BUFFER_DATA (*out) + gst_video_format_get_component_offset (format,
plane, dec->width, dec->height);
src = buf[plane].data;
src += ((height == dec->height) ? dec->offset_y : dec->offset_y / 2)
* buf[plane].stride;
src += (width == dec->width) ? dec->offset_x : dec->offset_x / 2;
for (i = 0; i < height; i++) {
memcpy (dest, src, width);
dest += stride;
src += buf[plane].stride;
}
}
return GST_FLOW_OK;
}
static GstFlowReturn
theora_handle_data_packet (GstTheoraDec * dec, ogg_packet * packet,
GstClockTime outtime, GstClockTime outdur)
{
/* normal data packet */
th_ycbcr_buffer buf;
GstBuffer *out;
gboolean keyframe;
GstFlowReturn result;
ogg_int64_t gp;
if (G_UNLIKELY (!dec->have_header))
goto not_initialized;
/* get timestamp and durations */
if (outtime == -1)
outtime = dec->last_timestamp;
if (outdur == -1)
outdur = gst_util_uint64_scale_int (GST_SECOND, dec->info.fps_denominator,
dec->info.fps_numerator);
/* calculate expected next timestamp */
if (outtime != -1 && outdur != -1)
dec->last_timestamp = outtime + outdur;
/* the second most significant bit of the first data byte is cleared
* for keyframes. We can only check it if it's not a zero-length packet. */
keyframe = packet->bytes && ((packet->packet[0] & 0x40) == 0);
if (G_UNLIKELY (keyframe)) {
GST_DEBUG_OBJECT (dec, "we have a keyframe");
dec->need_keyframe = FALSE;
} else if (G_UNLIKELY (dec->need_keyframe)) {
goto dropping;
}
GST_DEBUG_OBJECT (dec, "parsing data packet");
/* this does the decoding */
if (G_UNLIKELY (th_decode_packetin (dec->decoder, packet, &gp) < 0))
goto decode_error;
if (outtime != -1) {
gboolean need_skip;
GstClockTime running_time;
GstClockTime earliest_time;
gdouble proportion;
/* qos needs to be done on running time */
running_time = gst_segment_to_running_time (&dec->segment, GST_FORMAT_TIME,
outtime);
GST_OBJECT_LOCK (dec);
proportion = dec->proportion;
earliest_time = dec->earliest_time;
/* check for QoS, don't perform the last steps of getting and
* pushing the buffers that are known to be late. */
need_skip = earliest_time != -1 && running_time <= earliest_time;
GST_OBJECT_UNLOCK (dec);
if (need_skip) {
GstMessage *qos_msg;
guint64 stream_time;
gint64 jitter;
GST_DEBUG_OBJECT (dec, "skipping decoding: qostime %"
GST_TIME_FORMAT " <= %" GST_TIME_FORMAT,
GST_TIME_ARGS (running_time), GST_TIME_ARGS (earliest_time));
dec->dropped++;
stream_time =
gst_segment_to_stream_time (&dec->segment, GST_FORMAT_TIME, outtime);
jitter = GST_CLOCK_DIFF (running_time, earliest_time);
qos_msg =
gst_message_new_qos (GST_OBJECT_CAST (dec), FALSE, running_time,
stream_time, outtime, outdur);
gst_message_set_qos_values (qos_msg, jitter, proportion, 1000000);
gst_message_set_qos_stats (qos_msg, GST_FORMAT_BUFFERS,
dec->processed, dec->dropped);
gst_element_post_message (GST_ELEMENT_CAST (dec), qos_msg);
goto dropping_qos;
}
}
/* this does postprocessing and set up the decoded frame
* pointers in our yuv variable */
if (G_UNLIKELY (th_decode_ycbcr_out (dec->decoder, buf) < 0))
goto no_yuv;
if (G_UNLIKELY ((buf[0].width != dec->info.frame_width)
|| (buf[0].height != dec->info.frame_height)))
goto wrong_dimensions;
result = theora_handle_image (dec, buf, &out);
if (result != GST_FLOW_OK)
return result;
GST_BUFFER_OFFSET (out) = dec->frame_nr;
if (dec->frame_nr != -1)
dec->frame_nr++;
GST_BUFFER_OFFSET_END (out) = dec->frame_nr;
GST_BUFFER_TIMESTAMP (out) = outtime;
GST_BUFFER_DURATION (out) = outdur;
dec->processed++;
if (dec->segment.rate >= 0.0)
result = theora_dec_push_forward (dec, out);
else
result = theora_dec_push_reverse (dec, out);
return result;
/* ERRORS */
not_initialized:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL), ("no header sent yet"));
return GST_FLOW_ERROR;
}
dropping:
{
GST_WARNING_OBJECT (dec, "dropping frame because we need a keyframe");
dec->discont = TRUE;
return GST_FLOW_OK;
}
dropping_qos:
{
if (dec->frame_nr != -1)
dec->frame_nr++;
dec->discont = TRUE;
GST_WARNING_OBJECT (dec, "dropping frame because of QoS");
return GST_FLOW_OK;
}
decode_error:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL), ("theora decoder did not decode data packet"));
return GST_FLOW_ERROR;
}
no_yuv:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, DECODE,
(NULL), ("couldn't read out YUV image"));
return GST_FLOW_ERROR;
}
wrong_dimensions:
{
GST_ELEMENT_ERROR (GST_ELEMENT (dec), STREAM, FORMAT,
(NULL), ("dimensions of image do not match header"));
return GST_FLOW_ERROR;
}
}
static GstFlowReturn
theora_dec_decode_buffer (GstTheoraDec * dec, GstBuffer * buf)
{
ogg_packet packet;
GstFlowReturn result = GST_FLOW_OK;
GstClockTime timestamp, duration;
/* make ogg_packet out of the buffer */
packet.packet = GST_BUFFER_DATA (buf);
packet.bytes = GST_BUFFER_SIZE (buf);
packet.granulepos = -1;
packet.packetno = 0; /* we don't really care */
packet.b_o_s = dec->have_header ? 0 : 1;
/* EOS does not matter for the decoder */
packet.e_o_s = 0;
GST_LOG_OBJECT (dec, "decode buffer of size %ld", packet.bytes);
/* save last seem timestamp for interpolating the next timestamps using the
* framerate when we need to */
timestamp = GST_BUFFER_TIMESTAMP (buf);
duration = GST_BUFFER_DURATION (buf);
GST_DEBUG_OBJECT (dec, "header=%02x, outtime=%" GST_TIME_FORMAT,
packet.bytes ? packet.packet[0] : -1, GST_TIME_ARGS (timestamp));
/* switch depending on packet type. A zero byte packet is always a data
* packet; we don't dereference it in that case. */
if (packet.bytes && packet.packet[0] & 0x80) {
if (dec->have_header) {
GST_WARNING_OBJECT (GST_OBJECT (dec), "Ignoring header");
goto done;
}
result = theora_handle_header_packet (dec, &packet);
} else {
result = theora_handle_data_packet (dec, &packet, timestamp, duration);
}
done:
return result;
}
/* For reverse playback we use a technique that can be used for
* any keyframe based video codec.
*
* Input:
* Buffer decoding order: 7 8 9 4 5 6 1 2 3 EOS
* Keyframe flag: K K
* Discont flag: D D D
*
* - Each Discont marks a discont in the decoding order.
* - The keyframes mark where we can start decoding.
*
* First we prepend incomming buffers to the gather queue, whenever we receive
* a discont, we flush out the gather queue.
*
* The above data will be accumulated in the gather queue like this:
*
* gather queue: 9 8 7
* D
*
* Whe buffer 4 is received (with a DISCONT), we flush the gather queue like
* this:
*
* while (gather)
* take head of queue and prepend to decode queue.
* if we copied a keyframe, decode the decode queue.
*
* After we flushed the gather queue, we add 4 to the (now empty) gather queue.
* We get the following situation:
*
* gather queue: 4
* decode queue: 7 8 9
*
* After we received 5 (Keyframe) and 6:
*
* gather queue: 6 5 4
* decode queue: 7 8 9
*
* When we receive 1 (DISCONT) which triggers a flush of the gather queue:
*
* Copy head of the gather queue (6) to decode queue:
*
* gather queue: 5 4
* decode queue: 6 7 8 9
*
* Copy head of the gather queue (5) to decode queue. This is a keyframe so we
* can start decoding.
*
* gather queue: 4
* decode queue: 5 6 7 8 9
*
* Decode frames in decode queue, store raw decoded data in output queue, we
* can take the head of the decode queue and prepend the decoded result in the
* output queue:
*
* gather queue: 4
* decode queue:
* output queue: 9 8 7 6 5
*
* Now output all the frames in the output queue, picking a frame from the
* head of the queue.
*
* Copy head of the gather queue (4) to decode queue, we flushed the gather
* queue and can now store input buffer in the gather queue:
*
* gather queue: 1
* decode queue: 4
*
* When we receive EOS, the queue looks like:
*
* gather queue: 3 2 1
* decode queue: 4
*
* Fill decode queue, first keyframe we copy is 2:
*
* gather queue: 1
* decode queue: 2 3 4
*
* Decoded output:
*
* gather queue: 1
* decode queue:
* output queue: 4 3 2
*
* Leftover buffer 1 cannot be decoded and must be discarded.
*/
static GstFlowReturn
theora_dec_flush_decode (GstTheoraDec * dec)
{
GstFlowReturn res = GST_FLOW_OK;
while (dec->decode) {
GstBuffer *buf = GST_BUFFER_CAST (dec->decode->data);
GST_DEBUG_OBJECT (dec, "decoding buffer %p, ts %" GST_TIME_FORMAT,
buf, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
/* decode buffer, prepend to output queue */
res = theora_dec_decode_buffer (dec, buf);
/* don't need it anymore now */
gst_buffer_unref (buf);
dec->decode = g_list_delete_link (dec->decode, dec->decode);
}
while (dec->queued) {
GstBuffer *buf = GST_BUFFER_CAST (dec->queued->data);
/* iterate ouput queue an push downstream */
res = gst_pad_push (dec->srcpad, buf);
dec->queued = g_list_delete_link (dec->queued, dec->queued);
}
return res;
}
static GstFlowReturn
theora_dec_chain_reverse (GstTheoraDec * dec, gboolean discont, GstBuffer * buf)
{
GstFlowReturn res = GST_FLOW_OK;
/* if we have a discont, move buffers to the decode list */
if (G_UNLIKELY (discont)) {
GST_DEBUG_OBJECT (dec, "received discont,gathering buffers");
while (dec->gather) {
GstBuffer *gbuf;
guint8 *data;
gbuf = GST_BUFFER_CAST (dec->gather->data);
/* remove from the gather list */
dec->gather = g_list_delete_link (dec->gather, dec->gather);
/* copy to decode queue */
dec->decode = g_list_prepend (dec->decode, gbuf);
/* if we copied a keyframe, flush and decode the decode queue */
data = GST_BUFFER_DATA (gbuf);
if ((data[0] & 0x40) == 0) {
GST_DEBUG_OBJECT (dec, "copied keyframe");
res = theora_dec_flush_decode (dec);
}
}
}
/* add buffer to gather queue */
GST_DEBUG_OBJECT (dec, "gathering buffer %p, size %u", buf,
GST_BUFFER_SIZE (buf));
dec->gather = g_list_prepend (dec->gather, buf);
return res;
}
static GstFlowReturn
theora_dec_chain_forward (GstTheoraDec * dec, gboolean discont,
GstBuffer * buffer)
{
GstFlowReturn result;
result = theora_dec_decode_buffer (dec, buffer);
gst_buffer_unref (buffer);
return result;
}
static GstFlowReturn
theora_dec_chain (GstPad * pad, GstBuffer * buf)
{
GstTheoraDec *dec;
GstFlowReturn res;
gboolean discont;
dec = GST_THEORA_DEC (gst_pad_get_parent (pad));
/* peel of DISCONT flag */
discont = GST_BUFFER_IS_DISCONT (buf);
/* resync on DISCONT */
if (G_UNLIKELY (discont)) {
GST_DEBUG_OBJECT (dec, "received DISCONT buffer");
dec->need_keyframe = TRUE;
dec->last_timestamp = -1;
dec->discont = TRUE;
}
if (dec->segment.rate > 0.0)
res = theora_dec_chain_forward (dec, discont, buf);
else
res = theora_dec_chain_reverse (dec, discont, buf);
gst_object_unref (dec);
return res;
}
static GstStateChangeReturn
theora_dec_change_state (GstElement * element, GstStateChange transition)
{
GstTheoraDec *dec = GST_THEORA_DEC (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
th_info_clear (&dec->info);
th_comment_clear (&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:
break;
default:
break;
}
ret = parent_class->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
th_info_clear (&dec->info);
th_comment_clear (&dec->comment);
th_setup_free (dec->setup);
dec->setup = NULL;
th_decode_free (dec->decoder);
dec->decoder = NULL;
gst_theora_dec_reset (dec);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static void
theora_dec_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstTheoraDec *dec = GST_THEORA_DEC (object);
switch (prop_id) {
case PROP_CROP:
dec->crop = g_value_get_boolean (value);
break;
case PROP_TELEMETRY_MV:
dec->telemetry_mv = g_value_get_int (value);
break;
case PROP_TELEMETRY_MBMODE:
dec->telemetry_mbmode = g_value_get_int (value);
break;
case PROP_TELEMETRY_QI:
dec->telemetry_qi = g_value_get_int (value);
break;
case PROP_TELEMETRY_BITS:
dec->telemetry_bits = g_value_get_int (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
theora_dec_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstTheoraDec *dec = GST_THEORA_DEC (object);
switch (prop_id) {
case PROP_CROP:
g_value_set_boolean (value, dec->crop);
break;
case PROP_TELEMETRY_MV:
g_value_set_int (value, dec->telemetry_mv);
break;
case PROP_TELEMETRY_MBMODE:
g_value_set_int (value, dec->telemetry_mbmode);
break;
case PROP_TELEMETRY_QI:
g_value_set_int (value, dec->telemetry_qi);
break;
case PROP_TELEMETRY_BITS:
g_value_set_int (value, dec->telemetry_bits);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
Reference in a new issue View git blame Copy permalink