static gboolean
handle_buffer (GstRtpOnvifParse * self, GstBuffer * buf)
{
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
guint8 *data;
guint16 bits;
guint wordlen;
guint8 flags;
/*
guint64 timestamp;
guint8 cseq;
*/
if (!gst_rtp_buffer_map (buf, GST_MAP_READ, &rtp)) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
("Failed to map RTP buffer"), (NULL));
return FALSE;
}
/* Check if the ONVIF RTP extension is present in the packet */
if (!gst_rtp_buffer_get_extension_data (&rtp, &bits, (gpointer) & data,
&wordlen))
goto out;
if (bits != EXTENSION_ID || wordlen != EXTENSION_SIZE)
goto out;
/* timestamp = GST_READ_UINT64_BE (data); TODO */
flags = GST_READ_UINT8 (data + 8);
/* cseq = GST_READ_UINT8 (data + 9); TODO */
/* C */
if (flags & (1 << 7))
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
/* E */
/* if (flags & (1 << 6)); TODO */
/* D */
if (flags & (1 << 5))
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
else
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
out:
gst_rtp_buffer_unmap (&rtp);
return TRUE;
}
static GstFlowReturn
gst_mpegv_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
{
GstMpegvParse *mpvparse = GST_MPEGVIDEO_PARSE (parse);
GstBuffer *buffer = frame->buffer;
gst_mpegv_parse_update_src_caps (mpvparse);
if (G_UNLIKELY (mpvparse->pichdr.pic_type == GST_MPEG_VIDEO_PICTURE_TYPE_I))
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
/* maybe only sequence in this buffer, though not recommended,
* so mark it as such and force 0 duration */
if (G_UNLIKELY (mpvparse->pic_offset < 0)) {
GST_DEBUG_OBJECT (mpvparse, "frame holds no picture data");
frame->flags |= GST_BASE_PARSE_FRAME_FLAG_NO_FRAME;
GST_BUFFER_DURATION (buffer) = 0;
}
if (mpvparse->frame_repeat_count
&& GST_CLOCK_TIME_IS_VALID (GST_BUFFER_DURATION (buffer))) {
GST_BUFFER_DURATION (buffer) =
(1 + mpvparse->frame_repeat_count) * GST_BUFFER_DURATION (buffer) / 2;
}
if (G_UNLIKELY (mpvparse->drop && !mpvparse->config)) {
GST_DEBUG_OBJECT (mpvparse, "dropping frame as no config yet");
return GST_BASE_PARSE_FLOW_DROPPED;
} else
return GST_FLOW_OK;
}
static VTStatus
gst_vtenc_enqueue_buffer (void *data, int a2, int a3, int a4,
CMSampleBufferRef sbuf, int a6, int a7)
{
GstVTEnc *self = data;
gboolean is_keyframe;
GstBuffer *buf;
/* This may happen if we don't have enough bitrate */
if (sbuf == NULL)
goto beach;
is_keyframe = gst_vtenc_buffer_is_keyframe (self, sbuf);
if (self->expect_keyframe) {
if (!is_keyframe)
goto beach;
CFDictionaryRemoveValue (self->options,
*(self->ctx->vt->kVTEncodeFrameOptionKey_ForceKeyFrame));
}
self->expect_keyframe = FALSE;
buf = gst_core_media_buffer_new (self->ctx, sbuf);
gst_buffer_copy_metadata (buf, self->cur_inbuf, GST_BUFFER_COPY_TIMESTAMPS);
if (is_keyframe) {
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
} else {
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
}
g_ptr_array_add (self->cur_outbufs, buf);
beach:
return kVTSuccess;
}
static GstFlowReturn
gst_h264_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
{
GstH264Parse *h264parse;
GstBuffer *buffer;
guint av;
h264parse = GST_H264_PARSE (parse);
buffer = frame->buffer;
gst_h264_parse_update_src_caps (h264parse);
gst_h264_params_get_timestamp (h264parse->params,
&GST_BUFFER_TIMESTAMP (buffer), &GST_BUFFER_DURATION (buffer),
h264parse->frame_start);
if (h264parse->keyframe)
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
/* replace with transformed AVC output if applicable */
av = gst_adapter_available (h264parse->frame_out);
if (av) {
GstBuffer *buf;
buf = gst_adapter_take_buffer (h264parse->frame_out, av);
gst_buffer_copy_metadata (buf, buffer, GST_BUFFER_COPY_ALL);
gst_buffer_replace (&frame->buffer, buf);
}
return GST_FLOW_OK;
}
void PlaybackPipeline::enqueueSample(PassRefPtr<MediaSample> prsample)
{
RefPtr<MediaSample> rsample = prsample;
AtomicString trackId = rsample->trackID();
TRACE_MEDIA_MESSAGE("enqueing sample trackId=%s PTS=%f presentationSize=%.0fx%.0f at %" GST_TIME_FORMAT, trackId.string().utf8().data(), rsample->presentationTime().toFloat(), rsample->presentationSize().width(), rsample->presentationSize().height(), GST_TIME_ARGS(floatToGstClockTime(rsample->presentationTime().toDouble())));
ASSERT(WTF::isMainThread());
GST_OBJECT_LOCK(m_webKitMediaSrc.get());
Stream* stream = getStreamByTrackId(m_webKitMediaSrc.get(), trackId);
if (!stream) {
WARN_MEDIA_MESSAGE("No stream!");
GST_OBJECT_UNLOCK(m_webKitMediaSrc.get());
return;
}
GstElement* appsrc = stream->appsrc;
GST_OBJECT_UNLOCK(m_webKitMediaSrc.get());
GStreamerMediaSample* sample = static_cast<GStreamerMediaSample*>(rsample.get());
if (sample->sample() && gst_sample_get_buffer(sample->sample())) {
GstSample* gstsample = gst_sample_ref(sample->sample());
GST_BUFFER_FLAG_UNSET(gst_sample_get_buffer(gstsample), GST_BUFFER_FLAG_DECODE_ONLY);
push_sample(GST_APP_SRC(appsrc), gstsample);
// gst_app_src_push_sample() uses transfer-none for gstsample
gst_sample_unref(gstsample);
}
}
static GstFlowReturn
do_alloc_buffer (GstBufferPool * pool, GstBuffer ** buffer,
GstBufferPoolAcquireParams * params)
{
GstBufferPoolPrivate *priv = pool->priv;
GstFlowReturn result;
gint cur_buffers, max_buffers;
GstBufferPoolClass *pclass;
pclass = GST_BUFFER_POOL_GET_CLASS (pool);
if (G_UNLIKELY (!pclass->alloc_buffer))
goto no_function;
max_buffers = priv->max_buffers;
/* increment the allocation counter */
cur_buffers = g_atomic_int_add (&priv->cur_buffers, 1);
if (max_buffers && cur_buffers >= max_buffers)
goto max_reached;
result = pclass->alloc_buffer (pool, buffer, params);
if (G_UNLIKELY (result != GST_FLOW_OK))
goto alloc_failed;
/* lock all metadata and mark as pooled, we want this to remain on
* the buffer and we want to remove any other metadata that gets added
* later */
gst_buffer_foreach_meta (*buffer, mark_meta_pooled, pool);
/* un-tag memory, this is how we expect the buffer when it is
* released again */
GST_BUFFER_FLAG_UNSET (*buffer, GST_BUFFER_FLAG_TAG_MEMORY);
GST_LOG_OBJECT (pool, "allocated buffer %d/%d, %p", cur_buffers,
max_buffers, *buffer);
return result;
/* ERRORS */
no_function:
{
GST_ERROR_OBJECT (pool, "no alloc function");
return GST_FLOW_NOT_SUPPORTED;
}
max_reached:
{
GST_DEBUG_OBJECT (pool, "max buffers reached");
g_atomic_int_add (&priv->cur_buffers, -1);
return GST_FLOW_EOS;
}
alloc_failed:
{
GST_WARNING_OBJECT (pool, "alloc function failed");
g_atomic_int_add (&priv->cur_buffers, -1);
return result;
}
}
static GstFlowReturn
gst_inter_sub_src_create (GstBaseSrc * src, guint64 offset, guint size,
GstBuffer ** buf)
{
GstInterSubSrc *intersubsrc = GST_INTER_SUB_SRC (src);
GstBuffer *buffer;
GST_DEBUG_OBJECT (intersubsrc, "create");
buffer = NULL;
g_mutex_lock (&intersubsrc->surface->mutex);
if (intersubsrc->surface->sub_buffer) {
buffer = gst_buffer_ref (intersubsrc->surface->sub_buffer);
//intersubsrc->surface->sub_buffer_count++;
//if (intersubsrc->surface->sub_buffer_count >= 30) {
gst_buffer_unref (intersubsrc->surface->sub_buffer);
intersubsrc->surface->sub_buffer = NULL;
//}
}
g_mutex_unlock (&intersubsrc->surface->mutex);
if (buffer == NULL) {
GstMapInfo map;
buffer = gst_buffer_new_and_alloc (1);
gst_buffer_map (buffer, &map, GST_MAP_WRITE);
map.data[0] = 0;
gst_buffer_unmap (buffer, &map);
}
buffer = gst_buffer_make_writable (buffer);
/* FIXME: does this make sense? Rate is always 0 */
#if 0
GST_BUFFER_TIMESTAMP (buffer) =
gst_util_uint64_scale_int (GST_SECOND, intersubsrc->n_frames,
intersubsrc->rate);
GST_DEBUG_OBJECT (intersubsrc, "create ts %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
GST_BUFFER_DURATION (buffer) =
gst_util_uint64_scale_int (GST_SECOND, (intersubsrc->n_frames + 1),
intersubsrc->rate) - GST_BUFFER_TIMESTAMP (buffer);
#endif
GST_BUFFER_OFFSET (buffer) = intersubsrc->n_frames;
GST_BUFFER_OFFSET_END (buffer) = -1;
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT);
if (intersubsrc->n_frames == 0) {
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
}
intersubsrc->n_frames++;
*buf = buffer;
return GST_FLOW_OK;
}
static gboolean
gst_raw_video_parse_process (GstRawBaseParse * raw_base_parse,
GstRawBaseParseConfig config, GstBuffer * in_data,
G_GNUC_UNUSED gsize total_num_in_bytes,
G_GNUC_UNUSED gsize num_valid_in_bytes, GstBuffer ** processed_data)
{
GstRawVideoParse *raw_video_parse = GST_RAW_VIDEO_PARSE (raw_base_parse);
GstRawVideoParseConfig *config_ptr =
gst_raw_video_parse_get_config_ptr (raw_video_parse, config);
guint frame_flags = 0;
GstVideoInfo *video_info = &(config_ptr->info);
GstVideoMeta *videometa;
GstBuffer *out_data;
/* In case of extra padding bytes, get a subbuffer without the padding bytes.
* Otherwise, just add the video meta. */
if (GST_VIDEO_INFO_SIZE (video_info) < config_ptr->frame_stride) {
*processed_data = out_data =
gst_buffer_copy_region (in_data,
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS |
GST_BUFFER_COPY_MEMORY, 0, GST_VIDEO_INFO_SIZE (video_info));
} else {
out_data = in_data;
*processed_data = NULL;
}
if (config_ptr->interlaced) {
GST_BUFFER_FLAG_SET (out_data, GST_VIDEO_BUFFER_FLAG_INTERLACED);
frame_flags |= GST_VIDEO_FRAME_FLAG_INTERLACED;
if (config_ptr->top_field_first) {
GST_BUFFER_FLAG_SET (out_data, GST_VIDEO_BUFFER_FLAG_TFF);
frame_flags |= GST_VIDEO_FRAME_FLAG_TFF;
} else
GST_BUFFER_FLAG_UNSET (out_data, GST_VIDEO_BUFFER_FLAG_TFF);
}
/* Remove any existing videometa - it will be replaced by the new videometa
* from here */
while ((videometa = gst_buffer_get_video_meta (out_data))) {
GST_LOG_OBJECT (raw_base_parse, "removing existing videometa from buffer");
gst_buffer_remove_meta (out_data, (GstMeta *) videometa);
}
gst_buffer_add_video_meta_full (out_data,
frame_flags,
config_ptr->format,
config_ptr->width,
config_ptr->height,
GST_VIDEO_INFO_N_PLANES (video_info),
config_ptr->plane_offsets, config_ptr->plane_strides);
return TRUE;
}
static void
gst_v4l2_buffer_finalize (GstV4l2Buffer * buffer)
{
GstV4l2BufferPool *pool;
gboolean resuscitated = FALSE;
gint index;
pool = buffer->pool;
index = buffer->vbuffer.index;
GST_LOG_OBJECT (pool->v4l2elem, "finalizing buffer %p %d", buffer, index);
GST_V4L2_BUFFER_POOL_LOCK (pool);
if (pool->running) {
if (pool->requeuebuf) {
if (!gst_v4l2_buffer_pool_qbuf (pool, buffer)) {
GST_WARNING ("could not requeue buffer %p %d", buffer, index);
} else {
resuscitated = TRUE;
}
} else {
resuscitated = TRUE;
/* XXX double check this... I think it is ok to not synchronize this
* w.r.t. destruction of the pool, since the buffer is still live and
* the buffer holds a ref to the pool..
*/
g_async_queue_push (pool->avail_buffers, buffer);
}
} else {
GST_LOG_OBJECT (pool->v4l2elem, "the pool is shutting down");
}
if (resuscitated) {
/* FIXME: check that the caps didn't change */
GST_LOG_OBJECT (pool->v4l2elem, "reviving buffer %p, %d", buffer, index);
gst_buffer_ref (GST_BUFFER (buffer));
GST_BUFFER_SIZE (buffer) = 0;
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT);
pool->buffers[index] = buffer;
}
GST_V4L2_BUFFER_POOL_UNLOCK (pool);
if (!resuscitated) {
GST_LOG_OBJECT (pool->v4l2elem,
"buffer %p (data %p, len %u) not recovered, unmapping",
buffer, GST_BUFFER_DATA (buffer), buffer->mmap_length);
gst_mini_object_unref (GST_MINI_OBJECT (pool));
v4l2_munmap ((void *) GST_BUFFER_DATA (buffer), buffer->mmap_length);
GST_MINI_OBJECT_CLASS (v4l2buffer_parent_class)->finalize (GST_MINI_OBJECT
(buffer));
}
}
static GstFlowReturn
gst_inter_sub_src_create (GstBaseSrc * src, guint64 offset, guint size,
GstBuffer ** buf)
{
GstInterSubSrc *intersubsrc = GST_INTER_SUB_SRC (src);
GstBuffer *buffer;
GST_DEBUG_OBJECT (intersubsrc, "create");
buffer = NULL;
g_mutex_lock (intersubsrc->surface->mutex);
if (intersubsrc->surface->sub_buffer) {
buffer = gst_buffer_ref (intersubsrc->surface->sub_buffer);
//intersubsrc->surface->sub_buffer_count++;
//if (intersubsrc->surface->sub_buffer_count >= 30) {
gst_buffer_unref (intersubsrc->surface->sub_buffer);
intersubsrc->surface->sub_buffer = NULL;
//}
}
g_mutex_unlock (intersubsrc->surface->mutex);
if (buffer == NULL) {
guint8 *data;
buffer = gst_buffer_new_and_alloc (1);
data = GST_BUFFER_DATA (buffer);
data[0] = 0;
}
buffer = gst_buffer_make_metadata_writable (buffer);
GST_BUFFER_TIMESTAMP (buffer) =
gst_util_uint64_scale_int (GST_SECOND, intersubsrc->n_frames,
intersubsrc->rate);
GST_DEBUG_OBJECT (intersubsrc, "create ts %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
GST_BUFFER_DURATION (buffer) =
gst_util_uint64_scale_int (GST_SECOND, (intersubsrc->n_frames + 1),
intersubsrc->rate) - GST_BUFFER_TIMESTAMP (buffer);
GST_BUFFER_OFFSET (buffer) = intersubsrc->n_frames;
GST_BUFFER_OFFSET_END (buffer) = -1;
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT);
if (intersubsrc->n_frames == 0) {
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
}
gst_buffer_set_caps (buffer, GST_PAD_CAPS (GST_BASE_SRC_PAD (intersubsrc)));
intersubsrc->n_frames++;
*buf = buffer;
return GST_FLOW_OK;
}
static void
gst_video_parse_set_buffer_flags (GstRawParse * rp, GstBuffer * buffer)
{
GstVideoParse *vp = GST_VIDEO_PARSE (rp);
if (vp->interlaced) {
if (vp->top_field_first) {
GST_BUFFER_FLAG_SET (buffer, GST_VIDEO_BUFFER_FLAG_TFF);
} else {
GST_BUFFER_FLAG_UNSET (buffer, GST_VIDEO_BUFFER_FLAG_TFF);
}
}
}
static gboolean
gst_audio_aggregator_mix_buffer (GstAudioAggregator * aagg,
GstAudioAggregatorPad * pad, GstBuffer * inbuf, GstBuffer * outbuf)
{
guint overlap;
guint out_start;
gboolean filled;
guint blocksize;
blocksize = gst_util_uint64_scale (aagg->priv->output_buffer_duration,
GST_AUDIO_INFO_RATE (&aagg->info), GST_SECOND);
blocksize = MAX (1, blocksize);
/* Overlap => mix */
if (aagg->priv->offset < pad->priv->output_offset)
out_start = pad->priv->output_offset - aagg->priv->offset;
else
out_start = 0;
overlap = pad->priv->size - pad->priv->position;
if (overlap > blocksize - out_start)
overlap = blocksize - out_start;
if (GST_BUFFER_FLAG_IS_SET (inbuf, GST_BUFFER_FLAG_GAP)) {
/* skip gap buffer */
GST_LOG_OBJECT (pad, "skipping GAP buffer");
pad->priv->output_offset += pad->priv->size - pad->priv->position;
pad->priv->position = pad->priv->size;
gst_buffer_replace (&pad->priv->buffer, NULL);
return FALSE;
}
filled = GST_AUDIO_AGGREGATOR_GET_CLASS (aagg)->aggregate_one_buffer (aagg,
pad, inbuf, pad->priv->position, outbuf, out_start, overlap);
if (filled)
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_GAP);
pad->priv->position += overlap;
pad->priv->output_offset += overlap;
if (pad->priv->position == pad->priv->size) {
/* Buffer done, drop it */
gst_buffer_replace (&pad->priv->buffer, NULL);
GST_DEBUG_OBJECT (pad, "Finished mixing buffer, waiting for next");
return FALSE;
}
return TRUE;
}
static gboolean gst_imx_blitter_video_transform_copy_metadata(G_GNUC_UNUSED GstBaseTransform *trans, GstBuffer *input, GstBuffer *outbuf)
{
/* Only copy timestamps; the rest of the metadata must not be copied */
GST_BUFFER_DTS(outbuf) = GST_BUFFER_DTS(input);
GST_BUFFER_PTS(outbuf) = GST_BUFFER_PTS(input);
/* For GStreamer 1.3.1 and newer, make sure the GST_BUFFER_FLAG_TAG_MEMORY flag
* isn't copied, otherwise the output buffer will be reallocated all the time */
GST_BUFFER_FLAGS(outbuf) = GST_BUFFER_FLAGS(input);
#if GST_CHECK_VERSION(1, 3, 1)
GST_BUFFER_FLAG_UNSET(outbuf, GST_BUFFER_FLAG_TAG_MEMORY);
#endif
return TRUE;
}
static void
gst_droid_buffer_pool_reset_buffer (GstBufferPool * pool, GstBuffer * buffer)
{
GstDroidBufferPool *dpool = GST_DROID_BUFFER_POOL (pool);
gst_buffer_remove_all_memory (buffer);
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_TAG_MEMORY);
g_mutex_lock (&dpool->lock);
++dpool->num_buffers;
GST_DEBUG_OBJECT (dpool, "num buffers: %d", dpool->num_buffers);
g_cond_signal (&dpool->cond);
g_mutex_unlock (&dpool->lock);
return GST_BUFFER_POOL_CLASS (parent_class)->reset_buffer (pool, buffer);
}
static FrameNode *
deserialize_framenode (const gchar ** names, const gchar ** values)
{
gint i;
FrameNode *framenode = g_slice_new0 (FrameNode);
for (i = 0; names[i] != NULL; i++) {
if (g_strcmp0 (names[i], "id") == 0)
framenode->id = g_ascii_strtoull (values[i], NULL, 0);
else if (g_strcmp0 (names[i], "offset") == 0)
framenode->offset = g_ascii_strtoull (values[i], NULL, 0);
else if (g_strcmp0 (names[i], "offset-end") == 0)
framenode->offset_end = g_ascii_strtoull (values[i], NULL, 0);
else if (g_strcmp0 (names[i], "duration") == 0)
framenode->duration = g_ascii_strtoull (values[i], NULL, 0);
else if (g_strcmp0 (names[i], "pts") == 0)
framenode->pts = g_ascii_strtoull (values[i], NULL, 0);
else if (g_strcmp0 (names[i], "dts") == 0)
framenode->dts = g_ascii_strtoull (values[i], NULL, 0);
else if (g_strcmp0 (names[i], "checksum") == 0)
framenode->checksum = g_strdup (values[i]);
else if (g_strcmp0 (names[i], "is-keyframe") == 0) {
if (!g_ascii_strcasecmp (values[i], "true"))
framenode->is_keyframe = TRUE;
else
framenode->is_keyframe = FALSE;
}
}
framenode->buf = gst_buffer_new_wrapped (framenode->checksum,
strlen (framenode->checksum) + 1);
GST_BUFFER_OFFSET (framenode->buf) = framenode->offset;
GST_BUFFER_OFFSET_END (framenode->buf) = framenode->offset_end;
GST_BUFFER_DURATION (framenode->buf) = framenode->duration;
GST_BUFFER_PTS (framenode->buf) = framenode->pts;
GST_BUFFER_DTS (framenode->buf) = framenode->dts;
if (framenode->is_keyframe) {
GST_BUFFER_FLAG_UNSET (framenode->buf, GST_BUFFER_FLAG_DELTA_UNIT);
} else {
GST_BUFFER_FLAG_SET (framenode->buf, GST_BUFFER_FLAG_DELTA_UNIT);
}
return framenode;
}
/* prepare a buffer for transmission by passing data through libtheora */
static GstFlowReturn
theora_buffer_from_packet (GstTheoraEnc * enc, ogg_packet * packet,
GstClockTime timestamp, GstClockTime running_time,
GstClockTime duration, GstBuffer ** buffer)
{
GstBuffer *buf;
GstFlowReturn ret = GST_FLOW_OK;
buf = gst_buffer_new_and_alloc (packet->bytes);
if (!buf) {
GST_WARNING_OBJECT (enc, "Could not allocate buffer");
ret = GST_FLOW_ERROR;
goto done;
}
memcpy (GST_BUFFER_DATA (buf), packet->packet, packet->bytes);
gst_buffer_set_caps (buf, GST_PAD_CAPS (enc->srcpad));
/* see ext/ogg/README; OFFSET_END takes "our" granulepos, OFFSET its
* time representation */
GST_BUFFER_OFFSET_END (buf) =
granulepos_add (packet->granulepos, enc->granulepos_offset,
enc->granule_shift);
GST_BUFFER_OFFSET (buf) = granulepos_to_timestamp (enc,
GST_BUFFER_OFFSET_END (buf));
GST_BUFFER_TIMESTAMP (buf) = timestamp;
GST_BUFFER_DURATION (buf) = duration;
if (enc->next_discont) {
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
enc->next_discont = FALSE;
}
/* the second most significant bit of the first data byte is cleared
* for keyframes */
if ((packet->packet[0] & 0x40) == 0) {
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
} else {
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DELTA_UNIT);
}
enc->packetno++;
done:
*buffer = buf;
return ret;
}
static GstBuffer *
_create_buffer (BufferDesc * bdesc)
{
gchar *tmp = g_strdup (bdesc->content);
GstBuffer *buffer =
gst_buffer_new_wrapped (tmp, strlen (tmp) * sizeof (gchar));
GST_BUFFER_DTS (buffer) = bdesc->dts;
GST_BUFFER_PTS (buffer) = bdesc->pts;
GST_BUFFER_DURATION (buffer) = bdesc->duration;
if (bdesc->keyframe)
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
return buffer;
}
static gboolean gst_imx_blitter_video_transform_copy_metadata(G_GNUC_UNUSED GstBaseTransform *trans, GstBuffer *input, GstBuffer *outbuf)
{
/* Copy PTS, DTS, duration, offset, offset-end
* These do not change in the videotransform operation */
GST_BUFFER_DTS(outbuf) = GST_BUFFER_DTS(input);
GST_BUFFER_PTS(outbuf) = GST_BUFFER_PTS(input);
GST_BUFFER_DURATION(outbuf) = GST_BUFFER_DURATION(input);
GST_BUFFER_OFFSET(outbuf) = GST_BUFFER_OFFSET(input);
GST_BUFFER_OFFSET_END(outbuf) = GST_BUFFER_OFFSET_END(input);
/* For GStreamer 1.3.1 and newer, make sure the GST_BUFFER_FLAG_TAG_MEMORY flag
* isn't copied, otherwise the output buffer will be reallocated all the time */
GST_BUFFER_FLAGS(outbuf) = GST_BUFFER_FLAGS(input);
#if GST_CHECK_VERSION(1, 3, 1)
GST_BUFFER_FLAG_UNSET(outbuf, GST_BUFFER_FLAG_TAG_MEMORY);
#endif
return TRUE;
}
void PlaybackPipeline::enqueueSample(RefPtr<MediaSample> mediaSample)
{
ASSERT(WTF::isMainThread());
AtomicString trackId = mediaSample->trackID();
GST_TRACE("enqueing sample trackId=%s PTS=%f presentationSize=%.0fx%.0f at %" GST_TIME_FORMAT " duration: %" GST_TIME_FORMAT,
trackId.string().utf8().data(), mediaSample->presentationTime().toFloat(),
mediaSample->presentationSize().width(), mediaSample->presentationSize().height(),
GST_TIME_ARGS(WebCore::toGstClockTime(mediaSample->presentationTime().toDouble())),
GST_TIME_ARGS(WebCore::toGstClockTime(mediaSample->duration().toDouble())));
Stream* stream = getStreamByTrackId(m_webKitMediaSrc.get(), trackId);
if (!stream) {
GST_WARNING("No stream!");
return;
}
if (!stream->sourceBuffer->isReadyForMoreSamples(trackId)) {
GST_DEBUG("enqueueSample: skip adding new sample for trackId=%s, SB is not ready yet", trackId.string().utf8().data());
return;
}
GstElement* appsrc = stream->appsrc;
MediaTime lastEnqueuedTime = stream->lastEnqueuedTime;
GStreamerMediaSample* sample = static_cast<GStreamerMediaSample*>(mediaSample.get());
if (sample->sample() && gst_sample_get_buffer(sample->sample())) {
GRefPtr<GstSample> gstSample = sample->sample();
GstBuffer* buffer = gst_sample_get_buffer(gstSample.get());
lastEnqueuedTime = sample->presentationTime();
GST_BUFFER_FLAG_UNSET(buffer, GST_BUFFER_FLAG_DECODE_ONLY);
pushSample(GST_APP_SRC(appsrc), gstSample.get());
// gst_app_src_push_sample() uses transfer-none for gstSample.
stream->lastEnqueuedTime = lastEnqueuedTime;
}
}
GstFlowReturn
gst_base_video_parse_push (GstBaseVideoParse * base_video_parse,
GstBuffer * buffer)
{
GstBaseVideoParseClass *base_video_parse_class;
base_video_parse_class = GST_BASE_VIDEO_PARSE_GET_CLASS (base_video_parse);
if (base_video_parse->caps == NULL) {
gboolean ret;
base_video_parse->caps =
base_video_parse_class->get_caps (base_video_parse);
ret = gst_pad_set_caps (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse),
base_video_parse->caps);
if (!ret) {
GST_WARNING ("pad didn't accept caps");
return GST_FLOW_ERROR;
}
}
gst_buffer_set_caps (buffer, base_video_parse->caps);
GST_DEBUG ("pushing ts=%" GST_TIME_FORMAT " dur=%" GST_TIME_FORMAT
" off=%" G_GUINT64_FORMAT " off_end=%" G_GUINT64_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)),
GST_BUFFER_OFFSET (buffer), GST_BUFFER_OFFSET_END (buffer));
if (base_video_parse->discont) {
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DISCONT);
base_video_parse->discont = FALSE;
} else {
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DISCONT);
}
return gst_pad_push (GST_BASE_VIDEO_CODEC_SRC_PAD (base_video_parse), buffer);
}
/**
* gst_v4l2_buffer_pool_get:
* @pool: the "this" object
* @blocking: should this call suspend until there is a buffer available
* in the buffer pool?
*
* Get an available buffer in the pool
*/
GstV4l2Buffer *
gst_v4l2_buffer_pool_get (GstV4l2BufferPool * pool, gboolean blocking)
{
GstV4l2Buffer *buf;
if (blocking) {
buf = g_async_queue_pop (pool->avail_buffers);
} else {
buf = g_async_queue_try_pop (pool->avail_buffers);
}
if (buf) {
GST_V4L2_BUFFER_POOL_LOCK (pool);
GST_BUFFER_SIZE (buf) = buf->vbuffer.length;
GST_BUFFER_FLAG_UNSET (buf, 0xffffffff);
GST_V4L2_BUFFER_POOL_UNLOCK (pool);
}
pool->running = TRUE;
return buf;
}
static GstFlowReturn
gst_h263_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
{
GstH263Parse *h263parse;
GstBuffer *buffer;
GstFlowReturn res;
H263Params params = { 0, };
h263parse = GST_H263_PARSE (parse);
buffer = frame->buffer;
res = gst_h263_parse_get_params (¶ms, buffer, TRUE, &h263parse->state);
if (res != GST_FLOW_OK)
goto out;
if (h263parse->state == PASSTHROUGH || h263parse->state == PARSING) {
/* There's a feature we don't support, or we didn't have enough data to
* parse the header, which should not be possible. Either way, go into
* passthrough mode and let downstream handle it if it can. */
GST_WARNING ("Couldn't parse header - setting passthrough mode");
gst_base_parse_set_passthrough (parse, TRUE);
goto out;
}
/* h263parse->state is now GOT_HEADER */
gst_buffer_set_caps (buffer,
GST_PAD_CAPS (GST_BASE_PARSE_SRC_PAD (GST_BASE_PARSE (h263parse))));
if (gst_h263_parse_is_delta_unit (¶ms))
GST_BUFFER_FLAG_UNSET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
else
GST_BUFFER_FLAG_SET (buffer, GST_BUFFER_FLAG_DELTA_UNIT);
out:
return res;
}
/**
* gst_overlay_buffer_pool_get:
* @pool: the "this" object
* @blocking: should this call suspend until there is a buffer available
* in the buffer pool?
*
* Get an available buffer in the pool
*/
GstOverlayBuffer *
gst_overlay_buffer_pool_get (GstOverlayBufferPool * pool, gboolean blocking)
{
GstOverlayBuffer *buf;
GstSurfaceFlingerSink *surfacesink = GST_SURFACEFLINGERSINK (pool->overlayelem);
if (blocking) {
buf = g_async_queue_pop (pool->avail_buffers);
} else {
buf = g_async_queue_try_pop (pool->avail_buffers);
}
if (buf && buf != GST_OVERLAY_BUFFER_SENTINEL) {
GST_OVERLAY_BUFFER_POOL_LOCK (pool);
GST_BUFFER_SIZE (buf) = videoflinger_device_get_overlay_buf_length(surfacesink->videodev);
GST_BUFFER_FLAG_UNSET (buf, 0xffffffff);
GST_OVERLAY_BUFFER_POOL_UNLOCK (pool);
}
pool->running = TRUE;
return buf;
}
static GstFlowReturn
gst_irtsp_parse_parse_frame (GstBaseParse * parse, GstBaseParseFrame * frame)
{
/* HACK HACK skip header.
* could also ask baseparse to skip this,
* but that would give us a discontinuity for free
* which is a bit too much to have on all our packets */
GST_BUFFER_DATA (frame->buffer) += 4;
GST_BUFFER_SIZE (frame->buffer) -= 4;
if (!GST_PAD_CAPS (GST_BASE_PARSE_SRC_PAD (parse))) {
GstCaps *caps;
caps = gst_caps_new_simple ("application/x-rtp", NULL);
gst_pad_set_caps (GST_BASE_PARSE_SRC_PAD (parse), caps);
gst_caps_unref (caps);
}
GST_BUFFER_FLAG_UNSET (frame->buffer, GST_BUFFER_FLAG_DISCONT);
return GST_FLOW_OK;
}
GstBuffer *
rsn_wrappedbuffer_unwrap_and_unref (RsnWrappedBuffer * wrap_buf)
{
GstBuffer *buf;
gboolean is_readonly;
g_return_val_if_fail (wrap_buf != NULL, NULL);
g_return_val_if_fail (wrap_buf->wrapped_buffer != NULL, NULL);
buf = gst_buffer_ref (wrap_buf->wrapped_buffer);
/* Copy changed metadata back to the wrapped buffer from the wrapper,
* except the the read-only flag and the caps. */
is_readonly = GST_BUFFER_FLAG_IS_SET (wrap_buf, GST_BUFFER_FLAG_READONLY);
gst_buffer_copy_metadata (buf, GST_BUFFER (wrap_buf),
GST_BUFFER_COPY_FLAGS | GST_BUFFER_COPY_TIMESTAMPS);
if (!is_readonly)
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_READONLY);
gst_buffer_unref (GST_BUFFER (wrap_buf));
return buf;
}
static GstFlowReturn
gst_rtp_ulpfec_dec_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstRtpUlpFecDec *self = GST_RTP_ULPFEC_DEC (parent);
if (G_LIKELY (GST_FLOW_OK == self->chain_return_val)) {
GstRTPBuffer rtp = GST_RTP_BUFFER_INIT;
buf = gst_buffer_make_writable (buf);
if (G_UNLIKELY (self->unset_discont_flag)) {
self->unset_discont_flag = FALSE;
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
}
gst_rtp_buffer_map (buf, GST_MAP_WRITE, &rtp);
gst_rtp_buffer_set_seq (&rtp, self->next_seqnum++);
gst_rtp_buffer_unmap (&rtp);
return gst_pad_push (self->srcpad, buf);
}
gst_buffer_unref (buf);
return self->chain_return_val;
}
static GstFlowReturn
gst_multipart_demux_chain (GstPad * pad, GstObject * parent, GstBuffer * buf)
{
GstMultipartDemux *multipart;
GstAdapter *adapter;
gint size = 1;
GstFlowReturn res;
multipart = GST_MULTIPART_DEMUX (parent);
adapter = multipart->adapter;
res = GST_FLOW_OK;
if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) {
GSList *l;
for (l = multipart->srcpads; l != NULL; l = l->next) {
GstMultipartPad *srcpad = l->data;
srcpad->discont = TRUE;
}
gst_adapter_clear (adapter);
}
gst_adapter_push (adapter, buf);
while (gst_adapter_available (adapter) > 0) {
GstMultipartPad *srcpad;
GstBuffer *outbuf;
gboolean created;
gint datalen;
if (G_UNLIKELY (!multipart->header_completed)) {
if ((size = multipart_parse_header (multipart)) < 0) {
goto nodata;
} else {
gst_adapter_flush (adapter, size);
multipart->header_completed = TRUE;
}
}
if ((size = multipart_find_boundary (multipart, &datalen)) < 0) {
goto nodata;
}
/* Invalidate header info */
multipart->header_completed = FALSE;
multipart->content_length = -1;
if (G_UNLIKELY (datalen <= 0)) {
GST_DEBUG_OBJECT (multipart, "skipping empty content.");
gst_adapter_flush (adapter, size - datalen);
} else {
GstClockTime ts;
srcpad =
gst_multipart_find_pad_by_mime (multipart,
multipart->mime_type, &created);
ts = gst_adapter_prev_pts (adapter, NULL);
outbuf = gst_adapter_take_buffer (adapter, datalen);
gst_adapter_flush (adapter, size - datalen);
if (created) {
GstTagList *tags;
GstSegment segment;
gst_segment_init (&segment, GST_FORMAT_TIME);
/* Push new segment, first buffer has 0 timestamp */
gst_pad_push_event (srcpad->pad, gst_event_new_segment (&segment));
tags = gst_tag_list_new (GST_TAG_CONTAINER_FORMAT, "Multipart", NULL);
gst_tag_list_set_scope (tags, GST_TAG_SCOPE_GLOBAL);
gst_pad_push_event (srcpad->pad, gst_event_new_tag (tags));
}
outbuf = gst_buffer_make_writable (outbuf);
if (srcpad->last_ts == GST_CLOCK_TIME_NONE || srcpad->last_ts != ts) {
GST_BUFFER_TIMESTAMP (outbuf) = ts;
srcpad->last_ts = ts;
} else {
GST_BUFFER_TIMESTAMP (outbuf) = GST_CLOCK_TIME_NONE;
}
if (srcpad->discont) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_DISCONT);
srcpad->discont = FALSE;
} else {
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_DISCONT);
}
GST_DEBUG_OBJECT (multipart,
"pushing buffer with timestamp %" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
res = gst_pad_push (srcpad->pad, outbuf);
res = gst_multipart_combine_flows (multipart, srcpad, res);
if (res != GST_FLOW_OK)
break;
}
}
nodata:
if (G_UNLIKELY (size == MULTIPART_DATA_ERROR))
return GST_FLOW_ERROR;
if (G_UNLIKELY (size == MULTIPART_DATA_EOS))
return GST_FLOW_EOS;
return res;
}
static GstFlowReturn
gst_bml_transform_transform_mono_to_stereo (GstBaseTransform * base,
GstBuffer * inbuf, GstBuffer * outbuf)
{
GstMapInfo infoi, infoo;
GstBMLTransform *bml_transform = GST_BML_TRANSFORM (base);
GstBMLTransformClass *klass = GST_BML_TRANSFORM_GET_CLASS (bml_transform);
GstBML *bml = GST_BML (bml_transform);
GstBMLClass *bml_class = GST_BML_CLASS (klass);
BMLData *datai, *datao, *seg_datai, *seg_datao;
gpointer bm = bml->bm;
guint todo, seg_size, samples_per_buffer;
gboolean has_data;
guint mode = 3; /*WM_READWRITE */
bml->running_time =
gst_segment_to_stream_time (&base->segment, GST_FORMAT_TIME,
GST_BUFFER_TIMESTAMP (inbuf));
if (GST_BUFFER_FLAG_IS_SET (outbuf, GST_BUFFER_FLAG_DISCONT)) {
bml->subtick_count = (!bml->reverse) ? bml->subticks_per_tick : 1;
}
if (bml->subtick_count >= bml->subticks_per_tick) {
bml (gstbml_reset_triggers (bml, bml_class));
bml (gstbml_sync_values (bml, bml_class, GST_BUFFER_TIMESTAMP (outbuf)));
bml (tick (bm));
bml->subtick_count = 1;
} else {
bml->subtick_count++;
}
/* don't process data in passthrough-mode */
if (gst_base_transform_is_passthrough (base)) {
// we would actually need to convert mono to stereo here
// but this is not even called
GST_WARNING_OBJECT (bml_transform, "m2s in passthrough mode");
//return GST_FLOW_OK;
}
if (!gst_buffer_map (inbuf, &infoi, GST_MAP_READ)) {
GST_WARNING_OBJECT (base, "unable to map input buffer for read");
return GST_FLOW_ERROR;
}
datai = (BMLData *) infoi.data;
samples_per_buffer = infoi.size / sizeof (BMLData);
if (!gst_buffer_map (outbuf, &infoo, GST_MAP_READ | GST_MAP_WRITE)) {
GST_WARNING_OBJECT (base, "unable to map output buffer for read & write");
return GST_FLOW_ERROR;
}
datao = (BMLData *) infoo.data;
// some buzzmachines expect a cleared buffer
//for(i=0;i<samples_per_buffer*2;i++) datao[i]=0.0f;
memset (datao, 0, samples_per_buffer * 2 * sizeof (BMLData));
/* if buffer has only silence process with different mode */
if (GST_BUFFER_FLAG_IS_SET (outbuf, GST_BUFFER_FLAG_GAP)) {
mode = 2; /* WM_WRITE */
} else {
gfloat fc = 32768.0;
orc_scalarmultiply_f32_ns (datai, datai, fc, samples_per_buffer);
}
GST_DEBUG_OBJECT (bml_transform, " calling work_m2s(%d,%d)",
samples_per_buffer, mode);
todo = samples_per_buffer;
seg_datai = datai;
seg_datao = datao;
has_data = FALSE;
while (todo) {
// 256 is MachineInterface.h::MAX_BUFFER_LENGTH
seg_size = (todo > 256) ? 256 : todo;
has_data |= bml (work_m2s (bm, seg_datai, seg_datao, (int) seg_size, mode));
seg_datai = &seg_datai[seg_size];
seg_datao = &seg_datao[seg_size * 2];
todo -= seg_size;
}
if (gstbml_fix_data ((GstElement *) bml_transform, &infoo, has_data)) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_GAP);
} else {
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_GAP);
}
gst_buffer_unmap (inbuf, &infoi);
gst_buffer_unmap (outbuf, &infoo);
return (GST_FLOW_OK);
}
static GstFlowReturn
gst_bml_transform_transform_ip_stereo (GstBaseTransform * base,
GstBuffer * outbuf)
{
GstMapInfo info;
GstBMLTransform *bml_transform = GST_BML_TRANSFORM (base);
GstBMLTransformClass *klass = GST_BML_TRANSFORM_GET_CLASS (bml_transform);
GstBML *bml = GST_BML (bml_transform);
GstBMLClass *bml_class = GST_BML_CLASS (klass);
BMLData *data, *seg_data;
gpointer bm = bml->bm;
guint todo, seg_size, samples_per_buffer;
gboolean has_data;
guint mode = 3; /*WM_READWRITE */
bml->running_time =
gst_segment_to_stream_time (&base->segment, GST_FORMAT_TIME,
GST_BUFFER_TIMESTAMP (outbuf));
if (GST_BUFFER_FLAG_IS_SET (outbuf, GST_BUFFER_FLAG_DISCONT)) {
bml->subtick_count = (!bml->reverse) ? bml->subticks_per_tick : 1;
}
/* TODO(ensonic): sync on subticks ? */
if (bml->subtick_count >= bml->subticks_per_tick) {
bml (gstbml_reset_triggers (bml, bml_class));
bml (gstbml_sync_values (bml, bml_class, GST_BUFFER_TIMESTAMP (outbuf)));
bml (tick (bm));
bml->subtick_count = 1;
} else {
bml->subtick_count++;
}
/* don't process data in passthrough-mode */
if (gst_base_transform_is_passthrough (base))
return GST_FLOW_OK;
if (!gst_buffer_map (outbuf, &info, GST_MAP_READ | GST_MAP_WRITE)) {
GST_WARNING_OBJECT (base, "unable to map buffer for read & write");
return GST_FLOW_ERROR;
}
data = (BMLData *) info.data;
samples_per_buffer = info.size / (sizeof (BMLData) * 2);
/* if buffer has only silence process with different mode */
if (GST_BUFFER_FLAG_IS_SET (outbuf, GST_BUFFER_FLAG_GAP)) {
mode = 2; /* WM_WRITE */
} else {
gfloat fc = 32768.0;
orc_scalarmultiply_f32_ns (data, data, fc, samples_per_buffer * 2);
}
GST_DEBUG_OBJECT (bml_transform, " calling work_m2s(%d,%d)",
samples_per_buffer, mode);
todo = samples_per_buffer;
seg_data = data;
has_data = FALSE;
while (todo) {
// 256 is MachineInterface.h::MAX_BUFFER_LENGTH
seg_size = (todo > 256) ? 256 : todo;
// first seg_data can be NULL, its ignored
has_data |= bml (work_m2s (bm, seg_data, seg_data, (int) seg_size, mode));
seg_data = &seg_data[seg_size * 2];
todo -= seg_size;
}
if (gstbml_fix_data ((GstElement *) bml_transform, &info, has_data)) {
GST_BUFFER_FLAG_SET (outbuf, GST_BUFFER_FLAG_GAP);
} else {
GST_BUFFER_FLAG_UNSET (outbuf, GST_BUFFER_FLAG_GAP);
}
gst_buffer_unmap (outbuf, &info);
return (GST_FLOW_OK);
}
static gboolean
gst_ks_video_src_timestamp_buffer (GstKsVideoSrc * self, GstBuffer * buf,
GstClockTime presentation_time)
{
GstKsVideoSrcPrivate *priv = GST_KS_VIDEO_SRC_GET_PRIVATE (self);
GstClockTime duration;
GstClock *clock;
GstClockTime timestamp;
duration = gst_ks_video_device_get_duration (priv->device);
GST_OBJECT_LOCK (self);
clock = GST_ELEMENT_CLOCK (self);
if (clock != NULL) {
gst_object_ref (clock);
timestamp = GST_ELEMENT (self)->base_time;
if (GST_CLOCK_TIME_IS_VALID (presentation_time)) {
if (presentation_time > GST_ELEMENT (self)->base_time)
presentation_time -= GST_ELEMENT (self)->base_time;
else
presentation_time = 0;
}
} else {
timestamp = GST_CLOCK_TIME_NONE;
}
GST_OBJECT_UNLOCK (self);
if (clock != NULL) {
/* The time according to the current clock */
timestamp = gst_clock_get_time (clock) - timestamp;
if (timestamp > duration)
timestamp -= duration;
else
timestamp = 0;
if (GST_CLOCK_TIME_IS_VALID (presentation_time)) {
/*
* We don't use this for anything yet, need to ponder how to deal
* with pins that use an internal clock and timestamp from 0.
*/
GstClockTimeDiff diff = GST_CLOCK_DIFF (presentation_time, timestamp);
GST_DEBUG_OBJECT (self, "diff between gst and driver timestamp: %"
G_GINT64_FORMAT, diff);
}
gst_object_unref (clock);
clock = NULL;
/* Unless it's the first frame, align the current timestamp on a multiple
* of duration since the previous */
if (GST_CLOCK_TIME_IS_VALID (priv->prev_ts)) {
GstClockTime delta;
guint delta_remainder, delta_offset;
/* REVISIT: I've seen this happen with the GstSystemClock on Windows,
* scary... */
if (timestamp < priv->prev_ts) {
GST_INFO_OBJECT (self, "clock is ticking backwards");
return FALSE;
}
/* Round to a duration boundary */
delta = timestamp - priv->prev_ts;
delta_remainder = delta % duration;
if (delta_remainder < duration / 3)
timestamp -= delta_remainder;
else
timestamp += duration - delta_remainder;
/* How many frames are we off then? */
delta = timestamp - priv->prev_ts;
delta_offset = delta / duration;
if (delta_offset == 1) /* perfect */
GST_BUFFER_FLAG_UNSET (buf, GST_BUFFER_FLAG_DISCONT);
else if (delta_offset > 1) {
guint lost = delta_offset - 1;
GST_INFO_OBJECT (self, "lost %d frame%s, setting discont flag",
lost, (lost > 1) ? "s" : "");
GST_BUFFER_FLAG_SET (buf, GST_BUFFER_FLAG_DISCONT);
} else if (delta_offset == 0) { /* overproduction, skip this frame */
GST_INFO_OBJECT (self, "skipping frame");
return FALSE;
}
priv->offset += delta_offset;
}
priv->prev_ts = timestamp;
}
GST_BUFFER_OFFSET (buf) = priv->offset;
GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET (buf) + 1;
GST_BUFFER_TIMESTAMP (buf) = timestamp;
GST_BUFFER_DURATION (buf) = duration;
return TRUE;
}