static GSList *
get_chunk (GstAdapter * adapter, int offset, int *skip)
{
GSList *g;
#if 1
if (skip)
*skip = 0;
#endif
g_return_val_if_fail (offset >= 0, NULL);
g_return_val_if_fail (offset < adapter->size, NULL);
offset += adapter->skip;
g = adapter->buflist;
while (g) {
if (offset < GST_BUFFER_SIZE (GST_BUFFER_CAST (g->data))) {
if (skip)
*skip = offset;
return g;
}
offset -= GST_BUFFER_SIZE (GST_BUFFER_CAST (g->data));
g = g->next;
}
g_assert_not_reached ();
}
/* 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;
}
GstFlowReturn
gst_vdp_output_src_pad_push (GstVdpOutputSrcPad * vdp_pad,
GstVdpOutputBuffer * output_buf, GError ** error)
{
GstPad *pad;
GstBuffer *outbuf;
g_return_val_if_fail (GST_IS_VDP_OUTPUT_SRC_PAD (vdp_pad), GST_FLOW_ERROR);
g_return_val_if_fail (GST_IS_VDP_OUTPUT_BUFFER (output_buf), GST_FLOW_ERROR);
pad = (GstPad *) vdp_pad;
if (G_UNLIKELY (!GST_PAD_CAPS (pad)))
return GST_FLOW_NOT_NEGOTIATED;
switch (vdp_pad->output_format) {
case GST_VDP_OUTPUT_SRC_PAD_FORMAT_RGB:
{
GstFlowReturn ret;
guint size;
gst_vdp_output_buffer_calculate_size (output_buf, &size);
vdp_pad->lock_caps = TRUE;
ret = gst_pad_alloc_buffer (pad, 0, size, GST_PAD_CAPS (vdp_pad),
&outbuf);
vdp_pad->lock_caps = FALSE;
if (ret != GST_FLOW_OK) {
gst_buffer_unref (GST_BUFFER_CAST (output_buf));
return ret;
}
if (!gst_vdp_output_buffer_download (output_buf, outbuf, error)) {
gst_buffer_unref (GST_BUFFER_CAST (output_buf));
gst_buffer_unref (outbuf);
return GST_FLOW_ERROR;
}
gst_buffer_copy_metadata (outbuf, (const GstBuffer *) output_buf,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
gst_buffer_unref (GST_BUFFER_CAST (output_buf));
break;
}
case GST_VDP_OUTPUT_SRC_PAD_FORMAT_VDPAU:
{
outbuf = GST_BUFFER_CAST (output_buf);
break;
}
default:
g_assert_not_reached ();
break;
}
gst_buffer_set_caps (outbuf, GST_PAD_CAPS (vdp_pad));
return gst_pad_push (pad, outbuf);
}
static GstMozVideoBuffer*
gst_moz_video_buffer_copy(GstMozVideoBuffer* self)
{
GstMozVideoBuffer* copy;
g_return_val_if_fail(GST_IS_MOZ_VIDEO_BUFFER(self), NULL);
copy = gst_moz_video_buffer_new();
/* we simply copy everything from our parent */
GST_BUFFER_DATA(GST_BUFFER_CAST(copy)) =
(guint8*)g_memdup(GST_BUFFER_DATA(GST_BUFFER_CAST(self)), GST_BUFFER_SIZE(GST_BUFFER_CAST(self)));
/* make sure it gets freed(even if the parent is subclassed, we return a
normal buffer) */
GST_BUFFER_MALLOCDATA(GST_BUFFER_CAST(copy)) = GST_BUFFER_DATA(GST_BUFFER_CAST(copy));
GST_BUFFER_SIZE(GST_BUFFER_CAST(copy)) = GST_BUFFER_SIZE(GST_BUFFER_CAST(self));
/* copy metadata */
gst_buffer_copy_metadata(GST_BUFFER_CAST(copy),
GST_BUFFER_CAST(self),
(GstBufferCopyFlags)GST_BUFFER_COPY_ALL);
/* copy videobuffer */
if(self->data)
copy->data = (GstMozVideoBufferData*)g_boxed_copy(GST_TYPE_MOZ_VIDEO_BUFFER_DATA, self->data);
return copy;
}
static void
my_recycle_buffer_finalize (GstMiniObject * mini_object)
{
GstBuffer *self = GST_BUFFER_CAST (mini_object);
if (self->pool != NULL) {
my_buffer_pool_add (self->pool, GST_BUFFER_CAST (self));
g_usleep (G_USEC_PER_SEC / 100);
} else {
GST_MINI_OBJECT_CLASS (my_recycle_buffer_parent_class)->finalize
(mini_object);
}
}
static VdpBitstreamBuffer *
gst_vdp_h264_dec_create_bitstream_buffers (GstVdpH264Dec * h264_dec,
GstH264Frame * h264_frame, guint * n_bufs)
{
VdpBitstreamBuffer *bufs;
if (h264_dec->packetized) {
guint i;
bufs = g_new (VdpBitstreamBuffer, h264_frame->slices->len * 2);
*n_bufs = h264_frame->slices->len * 2;
for (i = 0; i < h264_frame->slices->len; i++) {
static const guint8 start_code[] = { 0x00, 0x00, 0x01 };
guint idx;
GstBuffer *buf;
idx = i * 2;
bufs[idx].bitstream = start_code;
bufs[idx].bitstream_bytes = 3;
bufs[idx].struct_version = VDP_BITSTREAM_BUFFER_VERSION;
idx = idx + 1;
buf = GST_BUFFER_CAST (g_ptr_array_index (h264_frame->slices, i));
bufs[idx].bitstream = GST_BUFFER_DATA (buf) + h264_dec->nal_length_size;
bufs[idx].bitstream_bytes = GST_BUFFER_SIZE (buf) -
h264_dec->nal_length_size;
bufs[idx].struct_version = VDP_BITSTREAM_BUFFER_VERSION;
}
}
else {
guint i;
bufs = g_new (VdpBitstreamBuffer, h264_frame->slices->len);
*n_bufs = h264_frame->slices->len;
for (i = 0; i < h264_frame->slices->len; i++) {
GstBuffer *buf;
buf = GST_BUFFER_CAST (g_ptr_array_index (h264_frame->slices, i));
bufs[i].bitstream = GST_BUFFER_DATA (buf);
bufs[i].bitstream_bytes = GST_BUFFER_SIZE (buf);
bufs[i].struct_version = VDP_BITSTREAM_BUFFER_VERSION;
}
}
return bufs;
}
/**
* gst_buffer_list_iterator_next:
* @it: a #GstBufferListIterator
*
* Returns the next buffer in the list iterated with @it. If the iterator is at
* the end of a group, NULL will be returned. This function may be called
* repeatedly to iterate through the current group.
*
* The caller will not get a new ref to the returned #GstBuffer and must not
* unref it.
*
* Returns: the next buffer in the current group of the buffer list, or NULL
*
* Since: 0.10.24
*/
GstBuffer *
gst_buffer_list_iterator_next (GstBufferListIterator * it)
{
GstBuffer *buffer;
g_return_val_if_fail (it != NULL, NULL);
while (it->next != NULL && it->next->data != GROUP_START &&
it->next->data == STOLEN) {
it->next = g_list_next (it->next);
}
if (it->next == NULL || it->next->data == GROUP_START) {
goto no_buffer;
}
buffer = GST_BUFFER_CAST (it->next->data);
it->last_returned = it->next;
it->next = g_list_next (it->next);
return buffer;
no_buffer:
{
it->last_returned = NULL;
return NULL;
}
}
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
gst_funnel_sink_chain_object (GstPad * pad, GstFunnel * funnel,
gboolean is_list, GstMiniObject * obj)
{
GstFlowReturn res;
GST_DEBUG_OBJECT (pad, "received %" GST_PTR_FORMAT, obj);
GST_PAD_STREAM_LOCK (funnel->srcpad);
if ((funnel->last_sinkpad == NULL)
|| ((funnel->forward_sticky_events_mode !=
GST_FUNNEL_FORWARD_STICKY_EVENTS_MODE_NEVER)
&& (funnel->last_sinkpad != pad))) {
GST_DEBUG_OBJECT (pad, "Forwarding sticky events");
gst_pad_sticky_events_foreach (pad, forward_events_on_stream_changed,
funnel);
gst_object_replace ((GstObject **) & funnel->last_sinkpad,
GST_OBJECT (pad));
}
if (is_list)
res = gst_pad_push_list (funnel->srcpad, GST_BUFFER_LIST_CAST (obj));
else
res = gst_pad_push (funnel->srcpad, GST_BUFFER_CAST (obj));
GST_PAD_STREAM_UNLOCK (funnel->srcpad);
GST_LOG_OBJECT (pad, "handled buffer%s %s", (is_list ? "list" : ""),
gst_flow_get_name (res));
return res;
}
static GstFlowReturn
vorbis_dec_chain_reverse (GstVorbisDec * vd, gboolean discont, GstBuffer * buf)
{
GstFlowReturn result = GST_FLOW_OK;
/* if we have a discont, move buffers to the decode list */
if (G_UNLIKELY (discont)) {
GST_DEBUG_OBJECT (vd, "received discont");
while (vd->gather) {
GstBuffer *gbuf;
gbuf = GST_BUFFER_CAST (vd->gather->data);
/* remove from the gather list */
vd->gather = g_list_delete_link (vd->gather, vd->gather);
/* copy to decode queue */
vd->decode = g_list_prepend (vd->decode, gbuf);
}
/* flush and decode the decode queue */
result = vorbis_dec_flush_decode (vd);
}
if (G_LIKELY (buf)) {
GST_DEBUG_OBJECT (vd,
"gathering buffer %p of size %u, time %" GST_TIME_FORMAT
", dur %" GST_TIME_FORMAT, buf, GST_BUFFER_SIZE (buf),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
/* add buffer to gather queue */
vd->gather = g_list_prepend (vd->gather, buf);
}
return result;
}
/**
* rtp_jitter_buffer_insert:
* @jbuf: an #RTPJitterBuffer
* @buf: a buffer
* @time: a running_time when this buffer was received in nanoseconds
* @clock_rate: the clock-rate of the payload of @buf
* @max_delay: the maximum lateness of @buf
* @tail: TRUE when the tail element changed.
*
* Inserts @buf into the packet queue of @jbuf. The sequence number of the
* packet will be used to sort the packets. This function takes ownerhip of
* @buf when the function returns %TRUE.
* @buf should have writable metadata when calling this function.
*
* Returns: %FALSE if a packet with the same number already existed.
*/
gboolean
rtp_jitter_buffer_insert (RTPJitterBuffer * jbuf, GstBuffer * buf,
GstClockTime time, guint32 clock_rate, GstClockTime max_delay,
gboolean * tail)
{
GList *list;
guint32 rtptime;
guint16 seqnum;
g_return_val_if_fail (jbuf != NULL, FALSE);
g_return_val_if_fail (buf != NULL, FALSE);
seqnum = gst_rtp_buffer_get_seq (buf);
/* loop the list to skip strictly smaller seqnum buffers */
for (list = jbuf->packets->head; list; list = g_list_next (list)) {
guint16 qseq;
gint gap;
qseq = gst_rtp_buffer_get_seq (GST_BUFFER_CAST (list->data));
/* compare the new seqnum to the one in the buffer */
gap = gst_rtp_buffer_compare_seqnum (seqnum, qseq);
/* we hit a packet with the same seqnum, notify a duplicate */
if (G_UNLIKELY (gap == 0))
goto duplicate;
/* seqnum > qseq, we can stop looking */
if (G_LIKELY (gap < 0))
break;
}
/* do skew calculation by measuring the difference between rtptime and the
* receive time, this function will retimestamp @buf with the skew corrected
* running time. */
rtptime = gst_rtp_buffer_get_timestamp (buf);
time = calculate_skew (jbuf, rtptime, time, clock_rate, max_delay);
GST_BUFFER_TIMESTAMP (buf) = time;
/* It's more likely that the packet was inserted in the front of the buffer */
if (G_LIKELY (list))
g_queue_insert_before (jbuf->packets, list, buf);
else
g_queue_push_tail (jbuf->packets, buf);
/* tail was changed when we did not find a previous packet, we set the return
* flag when requested. */
if (G_LIKELY (tail))
*tail = (list == NULL);
return TRUE;
/* ERRORS */
duplicate:
{
GST_WARNING ("duplicate packet %d found", (gint) seqnum);
return FALSE;
}
}
gboolean
shmdata_base_reader_reset_time (GstPad *pad,
GstMiniObject * mini_obj,
gpointer user_data)
{
shmdata_base_reader_t *context = (shmdata_base_reader_t *) user_data;
if (GST_IS_EVENT (mini_obj))
{
//g_debug ("EVENT %s", GST_EVENT_TYPE_NAME (GST_EVENT_CAST(mini_obj)));
}
else if (GST_IS_BUFFER (mini_obj))
{
GstBuffer *buffer = GST_BUFFER_CAST (mini_obj);
/* g_debug ("shmdata writer data frame (%p), data size %d, timestamp %llu, caps %s", */
/* GST_BUFFER_DATA (buffer), GST_BUFFER_SIZE (buffer), */
/* GST_TIME_AS_MSECONDS (GST_BUFFER_TIMESTAMP (buffer)), */
/* gst_caps_to_string (GST_BUFFER_CAPS (buffer))); */
if (context->timereset_)
{
context->timeshift_ = GST_BUFFER_TIMESTAMP (buffer);
context->timereset_ = FALSE;
}
GST_BUFFER_TIMESTAMP (buffer) =
GST_BUFFER_TIMESTAMP (buffer) - context->timeshift_;
}
else if (GST_IS_MESSAGE (mini_obj))
{
}
return TRUE;
}
static GstFlowReturn
vorbis_parse_drain_queue (GstVorbisParse * parse, gint64 granulepos)
{
GstFlowReturn ret = GST_FLOW_OK;
GList *walk;
gint64 cur = granulepos;
gint64 gp;
for (walk = parse->buffer_queue->head; walk; walk = walk->next)
cur -= GST_BUFFER_OFFSET (walk->data);
if (parse->prev_granulepos != -1)
cur = MAX (cur, parse->prev_granulepos);
while (!g_queue_is_empty (parse->buffer_queue)) {
GstBuffer *buf;
buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
cur += GST_BUFFER_OFFSET (buf);
gp = CLAMP (cur, 0, granulepos);
ret = vorbis_parse_push_buffer (parse, buf, gp);
if (ret != GST_FLOW_OK)
goto done;
}
parse->prev_granulepos = granulepos;
done:
return ret;
}
static gboolean
gst_vdp_sink_stop (GstBaseSink * bsink)
{
VdpSink *vdp_sink = GST_VDP_SINK (bsink);
vdp_sink->running = FALSE;
/* Wait for our event thread to finish before we clean up our stuff. */
if (vdp_sink->event_thread)
g_thread_join (vdp_sink->event_thread);
if (vdp_sink->cur_image) {
gst_buffer_unref (GST_BUFFER_CAST (vdp_sink->cur_image));
vdp_sink->cur_image = NULL;
}
g_mutex_lock (vdp_sink->flow_lock);
if (vdp_sink->window) {
gst_vdp_sink_window_destroy (vdp_sink, vdp_sink->window);
vdp_sink->window = NULL;
}
g_mutex_unlock (vdp_sink->flow_lock);
gst_vdp_device_clear (vdp_sink);
return TRUE;
}
static GstFlowReturn
vorbis_parse_drain_queue_prematurely (GstVorbisParse * parse)
{
GstFlowReturn ret = GST_FLOW_OK;
gint64 granulepos = MAX (parse->prev_granulepos, 0);
/* got an EOS event, make sure to push out any buffers that were in the queue
* -- won't normally be the case, but this catches the
* didn't-get-a-granulepos-on-the-last-packet case. Assuming a continuous
* stream. */
/* if we got EOS before any buffers came, go ahead and push the other events
* first */
vorbis_parse_drain_event_queue (parse);
while (!g_queue_is_empty (parse->buffer_queue)) {
GstBuffer *buf;
buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
granulepos += GST_BUFFER_OFFSET (buf);
ret = vorbis_parse_push_buffer (parse, buf, granulepos);
if (ret != GST_FLOW_OK)
goto done;
}
parse->prev_granulepos = granulepos;
done:
return ret;
}
/*
* Input:
* Buffer decoding order: 7 8 9 4 5 6 3 1 2 EOS
* Discont flag: D D D D
*
* - Each Discont marks a discont in the decoding order.
*
* for vorbis, each buffer is a keyframe when we have the previous
* buffer. This means that to decode buffer 7, we need buffer 6, which
* arrives out of order.
*
* we first gather buffers in the gather queue until we get a DISCONT. We
* prepend each incomming buffer so that they are in reversed order.
*
* gather queue: 9 8 7
* decode queue:
* output queue:
*
* When a DISCONT is received (buffer 4), we move the gather queue to the
* decode queue. This is simply done be taking the head of the gather queue
* and prepending it to the decode queue. This yields:
*
* gather queue:
* decode queue: 7 8 9
* output queue:
*
* Then we decode each buffer in the decode queue in order and put the output
* buffer in the output queue. The first buffer (7) will not produce any output
* because it needs the previous buffer (6) which did not arrive yet. This
* yields:
*
* gather queue:
* decode queue: 7 8 9
* output queue: 9 8
*
* Then we remove the consumed buffers from the decode queue. Buffer 7 is not
* completely consumed, we need to keep it around for when we receive buffer
* 6. This yields:
*
* gather queue:
* decode queue: 7
* output queue: 9 8
*
* Then we accumulate more buffers:
*
* gather queue: 6 5 4
* decode queue: 7
* output queue:
*
* prepending to the decode queue on DISCONT yields:
*
* gather queue:
* decode queue: 4 5 6 7
* output queue:
*
* after decoding and keeping buffer 4:
*
* gather queue:
* decode queue: 4
* output queue: 7 6 5
*
* Etc..
*/
static GstFlowReturn
vorbis_dec_flush_decode (GstVorbisDec * dec)
{
GstFlowReturn res = GST_FLOW_OK;
GList *walk;
walk = dec->decode;
GST_DEBUG_OBJECT (dec, "flushing buffers to decoder");
while (walk) {
GList *next;
GstBuffer *buf = GST_BUFFER_CAST (walk->data);
GST_DEBUG_OBJECT (dec, "decoding buffer %p, ts %" GST_TIME_FORMAT,
buf, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)));
next = g_list_next (walk);
/* decode buffer, prepend to output queue */
res = vorbis_dec_decode_buffer (dec, buf);
/* if we generated output, we can discard the buffer, else we
* keep it in the queue */
if (dec->queued) {
GST_DEBUG_OBJECT (dec, "decoded buffer to %p", dec->queued->data);
dec->decode = g_list_delete_link (dec->decode, walk);
gst_buffer_unref (buf);
} else {
GST_DEBUG_OBJECT (dec, "buffer did not decode, keeping");
}
walk = next;
}
while (dec->queued) {
GstBuffer *buf = GST_BUFFER_CAST (dec->queued->data);
GstClockTime timestamp, duration;
timestamp = GST_BUFFER_TIMESTAMP (buf);
duration = GST_BUFFER_DURATION (buf);
vorbis_do_timestamps (dec, buf, TRUE, timestamp, duration);
res = vorbis_dec_push_forward (dec, buf);
dec->queued = g_list_delete_link (dec->queued, dec->queued);
}
return res;
}
GstCaps *
gst_type_find_helper_get_range (GstObject * obj,
GstTypeFindHelperGetRangeFunction func, guint64 size,
GstTypeFindProbability * prob)
{
GstTypeFindHelper helper;
GstTypeFind find;
GSList *walk;
GList *l, *type_list;
GstCaps *result = NULL;
g_return_val_if_fail (GST_IS_OBJECT (obj), NULL);
g_return_val_if_fail (func != NULL, NULL);
helper.buffers = NULL;
helper.size = size;
helper.last_offset = 0;
helper.func = func;
helper.best_probability = 0;
helper.caps = NULL;
helper.obj = obj;
find.data = &helper;
find.peek = helper_find_peek;
find.suggest = helper_find_suggest;
if (size == 0 || size == (guint64) - 1) {
find.get_length = NULL;
} else {
find.get_length = helper_find_get_length;
}
/* FIXME: we need to keep this list within the registry */
type_list = gst_type_find_factory_get_list ();
type_list = g_list_sort (type_list, type_find_factory_rank_cmp);
for (l = type_list; l; l = l->next) {
helper.factory = GST_TYPE_FIND_FACTORY (l->data);
gst_type_find_factory_call_function (helper.factory, &find);
if (helper.best_probability >= GST_TYPE_FIND_MAXIMUM)
break;
}
gst_plugin_feature_list_free (type_list);
for (walk = helper.buffers; walk; walk = walk->next)
gst_buffer_unref (GST_BUFFER_CAST (walk->data));
g_slist_free (helper.buffers);
if (helper.best_probability > 0)
result = helper.caps;
if (prob)
*prob = helper.best_probability;
GST_LOG_OBJECT (obj, "Returning %" GST_PTR_FORMAT " (probability = %u)",
result, (guint) helper.best_probability);
return result;
}
static gboolean
handle_queued_objects (APP_STATE_T * state)
{
GstMiniObject *object = NULL;
g_mutex_lock (&state->queue_lock);
if (state->flushing) {
g_cond_broadcast (&state->cond);
goto beach;
} else if (g_async_queue_length (state->queue) == 0) {
goto beach;
}
if ((object = g_async_queue_try_pop (state->queue))) {
if (GST_IS_BUFFER (object)) {
GstBuffer *buffer = GST_BUFFER_CAST (object);
update_image (state, buffer);
render_scene (state);
gst_buffer_unref (buffer);
if (!SYNC_BUFFERS) {
object = NULL;
}
} else if (GST_IS_QUERY (object)) {
GstQuery *query = GST_QUERY_CAST (object);
GstStructure *s = (GstStructure *) gst_query_get_structure (query);
if (gst_structure_has_name (s, "not-used")) {
g_assert_not_reached ();
} else {
g_assert_not_reached ();
}
} else if (GST_IS_EVENT (object)) {
GstEvent *event = GST_EVENT_CAST (object);
g_print ("\nevent %p %s\n", event,
gst_event_type_get_name (GST_EVENT_TYPE (event)));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_EOS:
flush_internal (state);
break;
default:
break;
}
gst_event_unref (event);
object = NULL;
}
}
if (object) {
state->popped_obj = object;
g_cond_broadcast (&state->cond);
}
beach:
g_mutex_unlock (&state->queue_lock);
return FALSE;
}
static GstFlowReturn
theora_parse_drain_queue (GstTheoraParse * parse, gint64 granulepos)
{
GstFlowReturn ret = GST_FLOW_OK;
gint64 keyframe, prev_frame, frame;
parse_granulepos (parse, granulepos, &keyframe, &frame);
GST_DEBUG ("draining queue of length %d",
g_queue_get_length (parse->buffer_queue));
GST_LOG_OBJECT (parse, "gp %" G_GINT64_FORMAT ", kf %" G_GINT64_FORMAT
", frame %" G_GINT64_FORMAT, granulepos, keyframe, frame);
prev_frame = frame - g_queue_get_length (parse->buffer_queue);
GST_LOG_OBJECT (parse,
"new prev %" G_GINT64_FORMAT ", prev %" G_GINT64_FORMAT, prev_frame,
parse->prev_frame);
if (prev_frame < parse->prev_frame) {
GST_WARNING ("jumped %" G_GINT64_FORMAT
" frames backwards! not sure what to do here",
parse->prev_frame - prev_frame);
parse->prev_frame = prev_frame;
} else if (prev_frame > parse->prev_frame) {
GST_INFO ("discontinuity detected (%" G_GINT64_FORMAT
" frames)", prev_frame - parse->prev_frame);
if (keyframe <= prev_frame && keyframe > parse->prev_keyframe)
parse->prev_keyframe = keyframe;
parse->prev_frame = prev_frame;
}
while (!g_queue_is_empty (parse->buffer_queue)) {
GstBuffer *buf;
parse->prev_frame++;
g_assert (parse->prev_frame >= 0);
buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
if (is_keyframe (buf))
/* we have a keyframe */
parse->prev_keyframe = parse->prev_frame;
else
GST_BUFFER_FLAGS (buf) |= GST_BUFFER_FLAG_DELTA_UNIT;
ret = theora_parse_push_buffer (parse, buf, parse->prev_keyframe,
parse->prev_frame);
if (ret != GST_FLOW_OK)
goto done;
}
done:
return ret;
}
static gboolean
scan_slow (GstAdapter * adapter, GSList * g, int skip, guint32 pattern,
guint32 mask)
{
guint8 tmp[4];
int j;
pattern &= mask;
for (j = 0; j < 4; j++) {
tmp[j] = ((guint8 *) GST_BUFFER_DATA (GST_BUFFER_CAST (g->data)))[skip];
skip++;
if (skip >= GST_BUFFER_SIZE (GST_BUFFER_CAST (g->data))) {
g = g->next;
skip = 0;
}
}
return ((GST_READ_UINT32_BE (tmp) & mask) == pattern);
}
static GstBuffer *
my_recycle_buffer_new (MyBufferPool * pool)
{
MyRecycleBuffer *buf;
buf = MY_RECYCLE_BUFFER (gst_mini_object_new (MY_TYPE_RECYCLE_BUFFER));
buf->pool = pool;
return GST_BUFFER_CAST (buf);
}
static GstBuffer *
my_recycle_buffer_new (MyBufferPool * pool)
{
GstBuffer *buf;
buf = gst_buffer_new ();
//buf->pool = pool;
return GST_BUFFER_CAST (buf);
}
static GstFlowReturn
gst_glimage_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstGLImageSink *glimage_sink = NULL;
GstGLBuffer *gl_buffer = NULL;
glimage_sink = GST_GLIMAGE_SINK (bsink);
GST_INFO ("buffer size: %d", GST_BUFFER_SIZE (buf));
//is gl
if (glimage_sink->is_gl) {
//increment gl buffer ref before storage
gl_buffer = GST_GL_BUFFER (gst_buffer_ref (buf));
}
//is not gl
else {
//blocking call
gl_buffer = gst_gl_buffer_new (glimage_sink->display,
glimage_sink->width, glimage_sink->height);
//blocking call
gst_gl_display_do_upload (glimage_sink->display, gl_buffer->texture,
glimage_sink->width, glimage_sink->height, GST_BUFFER_DATA (buf));
//gl_buffer is created in this block, so the gl buffer is already referenced
}
if (glimage_sink->window_id != glimage_sink->new_window_id) {
glimage_sink->window_id = glimage_sink->new_window_id;
gst_gl_display_set_window_id (glimage_sink->display,
glimage_sink->window_id);
}
//the buffer is cleared when an other comes in
if (glimage_sink->stored_buffer) {
gst_buffer_unref (GST_BUFFER_CAST (glimage_sink->stored_buffer));
glimage_sink->stored_buffer = NULL;
}
//store current buffer
glimage_sink->stored_buffer = gl_buffer;
//redisplay opengl scene
if (gl_buffer->texture &&
gst_gl_display_redisplay (glimage_sink->display,
gl_buffer->texture, gl_buffer->width, gl_buffer->height,
glimage_sink->window_width, glimage_sink->window_height,
glimage_sink->keep_aspect_ratio))
return GST_FLOW_OK;
else {
GST_ELEMENT_ERROR (glimage_sink, RESOURCE, NOT_FOUND,
GST_GL_DISPLAY_ERR_MSG (glimage_sink->display), (NULL));
return GST_FLOW_ERROR;
}
}
int
gst_adapter_masked_scan_uint32_compat (GstAdapter * adapter, guint32 mask,
guint32 pattern, guint offset, guint n)
{
GSList *g;
int j;
int k;
int skip;
int m;
g_return_val_if_fail (n >= 0, -1);
g_return_val_if_fail (offset >= 0, -1);
g_return_val_if_fail (offset + n + 4 <= adapter->size, -1);
g = get_chunk (adapter, offset, &skip);
j = 0;
while (j < n) {
m = MIN (GST_BUFFER_SIZE (GST_BUFFER_CAST (g->data)) - skip - 4, 0);
if (m > 0) {
k = scan_fast (GST_BUFFER_DATA (GST_BUFFER_CAST (g->data)) + skip,
pattern, mask, m);
if (k < m) {
return offset + j + k;
}
j += m;
skip += m;
} else {
if (scan_slow (adapter, g, skip, pattern, mask)) {
return offset + j;
}
j++;
skip++;
}
if (skip >= GST_BUFFER_SIZE (GST_BUFFER_CAST (g->data))) {
g = g->next;
skip = 0;
}
}
return -1;
}
static gboolean
gst_gl_deinterlace_filter (GstGLFilter * filter, GstGLBuffer * inbuf,
GstGLBuffer * outbuf)
{
GstGLDeinterlace *deinterlace_filter = GST_GL_DEINTERLACE (filter);
//blocking call, use a FBO
gst_gl_display_use_fbo (filter->display, filter->width, filter->height,
filter->fbo, filter->depthbuffer, outbuf->texture,
gst_gl_deinterlace_callback, inbuf->width, inbuf->height,
inbuf->texture, 0, filter->width, 0, filter->height,
GST_GL_DISPLAY_PROJECTION_ORTHO2D, (gpointer) deinterlace_filter);
if (deinterlace_filter->gl_buffer_prev)
gst_buffer_unref (GST_BUFFER_CAST (deinterlace_filter->gl_buffer_prev));
deinterlace_filter->gl_buffer_prev =
GST_GL_BUFFER (gst_buffer_ref (GST_BUFFER_CAST (inbuf)));
return TRUE;
}
static void
gst_gl_deinterlace_reset (GstGLFilter * filter)
{
GstGLDeinterlace *deinterlace_filter = GST_GL_DEINTERLACE (filter);
if (deinterlace_filter->gl_buffer_prev) {
gst_buffer_unref (GST_BUFFER_CAST (deinterlace_filter->gl_buffer_prev));
deinterlace_filter->gl_buffer_prev = NULL;
}
//blocking call, wait the opengl thread has destroyed the shader
gst_gl_display_del_shader (filter->display, deinterlace_filter->shader);
}
void QGstXvImageBufferPool::doAlloc()
{
//should be always called from the main thread with m_poolMutex locked
//Q_ASSERT(QThread::currentThread() == thread());
XSync(QX11Info::display(), false);
QGstXvImageBuffer *xvBuffer = (QGstXvImageBuffer *)gst_mini_object_new(QGstXvImageBuffer::get_type());
quint64 portId = m_format.property("portId").toULongLong();
int xvFormatId = m_format.property("xvFormatId").toInt();
xvBuffer->xvImage = XvShmCreateImage(
QX11Info::display(),
portId,
xvFormatId,
0,
m_format.frameWidth(),
m_format.frameHeight(),
&xvBuffer->shmInfo
);
if (!xvBuffer->xvImage) {
qWarning() << "QGstXvImageBufferPool: XvShmCreateImage failed";
return;
}
XSync(QX11Info::display(), false);
xvBuffer->shmInfo.shmid = shmget(IPC_PRIVATE, xvBuffer->xvImage->data_size, IPC_CREAT | 0777);
xvBuffer->shmInfo.shmaddr = xvBuffer->xvImage->data = (char*)shmat(xvBuffer->shmInfo.shmid, 0, 0);
xvBuffer->shmInfo.readOnly = False;
if (!XShmAttach(QX11Info::display(), &xvBuffer->shmInfo)) {
qWarning() << "QGstXvImageBufferPool: XShmAttach failed";
return;
}
XSync(QX11Info::display(), false);
shmctl (xvBuffer->shmInfo.shmid, IPC_RMID, NULL);
xvBuffer->pool = this;
GST_MINI_OBJECT_CAST(xvBuffer)->flags = 0;
gst_buffer_set_caps(GST_BUFFER_CAST(xvBuffer), m_caps);
GST_BUFFER_DATA(xvBuffer) = (uchar*)xvBuffer->xvImage->data;
GST_BUFFER_SIZE(xvBuffer) = xvBuffer->xvImage->data_size;
m_allBuffers.append(xvBuffer);
m_pool.append(xvBuffer);
XSync(QX11Info::display(), false);
}
static GstFlowReturn
theora_parse_drain_queue_prematurely (GstTheoraParse * parse)
{
GstFlowReturn ret = GST_FLOW_OK;
/* got an EOS event, make sure to push out any buffers that were in the queue
* -- won't normally be the case, but this catches the
* didn't-get-a-granulepos-on-the-last-packet case. Assuming a continuous
* stream. */
GST_DEBUG_OBJECT (parse, "got EOS, draining queue");
/* if we get an eos before pushing the streamheaders, drain our events before
* eos */
theora_parse_drain_event_queue (parse);
while (!g_queue_is_empty (parse->buffer_queue)) {
GstBuffer *buf;
buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
parse->prev_frame++;
if (is_keyframe (buf))
/* we have a keyframe */
parse->prev_keyframe = parse->prev_frame;
else
GST_BUFFER_FLAGS (buf) |= GST_BUFFER_FLAG_DELTA_UNIT;
if (parse->prev_keyframe < 0) {
if (GST_BUFFER_OFFSET_END_IS_VALID (buf)) {
parse_granulepos (parse, GST_BUFFER_OFFSET_END (buf),
&parse->prev_keyframe, NULL);
} else {
/* No previous keyframe known; can't extract one from this frame. That
* means we can't do any valid output for this frame, just continue to
* the next frame.
*/
gst_buffer_unref (buf);
continue;
}
}
ret = theora_parse_push_buffer (parse, buf, parse->prev_keyframe,
parse->prev_frame);
if (ret != GST_FLOW_OK)
goto done;
}
done:
return ret;
}
static gboolean
on_video_sink_data_flow (GstPad * pad, GstMiniObject * mini_obj,
gpointer user_data)
{
GstFPSDisplaySink *self = GST_FPS_DISPLAY_SINK (user_data);
#if 0
if (GST_IS_BUFFER (mini_obj)) {
GstBuffer *buf = GST_BUFFER_CAST (mini_obj);
if (GST_CLOCK_TIME_IS_VALID (self->next_ts)) {
if (GST_BUFFER_TIMESTAMP (buf) <= self->next_ts) {
self->frames_rendered++;
} else {
GST_WARNING_OBJECT (self, "dropping frame : ts %" GST_TIME_FORMAT
" < expected_ts %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (self->next_ts));
self->frames_dropped++;
}
} else {
self->frames_rendered++;
}
} else
#endif
if (GST_IS_EVENT (mini_obj)) {
GstEvent *ev = GST_EVENT_CAST (mini_obj);
if (GST_EVENT_TYPE (ev) == GST_EVENT_QOS) {
GstClockTimeDiff diff;
GstClockTime ts;
gst_event_parse_qos (ev, NULL, &diff, &ts);
if (diff <= 0.0) {
g_atomic_int_inc (&self->frames_rendered);
} else {
g_atomic_int_inc (&self->frames_dropped);
}
ts = gst_util_get_timestamp ();
if (G_UNLIKELY (!GST_CLOCK_TIME_IS_VALID (self->start_ts))) {
self->interval_ts = self->last_ts = self->start_ts = ts;
}
if (GST_CLOCK_DIFF (self->interval_ts, ts) > self->fps_update_interval) {
display_current_fps (self);
self->interval_ts = ts;
}
}
}
return TRUE;
}
static void
theora_parse_clear_queue (GstTheoraParse * parse)
{
while (parse->buffer_queue->length) {
GstBuffer *buf;
buf = GST_BUFFER_CAST (g_queue_pop_head (parse->buffer_queue));
gst_buffer_unref (buf);
}
while (parse->event_queue->length) {
GstEvent *event;
event = GST_EVENT_CAST (g_queue_pop_head (parse->event_queue));
gst_event_unref (event);
}
}
