static void
gst_decklink_video_sink_init (GstDecklinkVideoSink * self)
{
self->mode = GST_DECKLINK_MODE_NTSC;
self->device_number = 0;
gst_base_sink_set_max_lateness (GST_BASE_SINK_CAST (self), 20 * GST_MSECOND);
gst_base_sink_set_qos_enabled (GST_BASE_SINK_CAST (self), TRUE);
}
static void
gst_decklink_video_sink_init (GstDecklinkVideoSink * self)
{
self->mode = GST_DECKLINK_MODE_NTSC;
self->device_number = 0;
self->video_format = GST_DECKLINK_VIDEO_FORMAT_8BIT_YUV;
/* VITC is legacy, we should expect RP188 in modern use cases */
self->timecode_format = bmdTimecodeRP188Any;
gst_base_sink_set_max_lateness (GST_BASE_SINK_CAST (self), 20 * GST_MSECOND);
gst_base_sink_set_qos_enabled (GST_BASE_SINK_CAST (self), TRUE);
}
static gboolean
gst_fake_sink_event (GstBaseSink * bsink, GstEvent * event)
{
GstFakeSink *sink = GST_FAKE_SINK (bsink);
if (!sink->silent) {
const GstStructure *s;
const gchar *tstr;
gchar *sstr;
GST_OBJECT_LOCK (sink);
g_free (sink->last_message);
if (GST_EVENT_TYPE (event) == GST_EVENT_SINK_MESSAGE) {
GstMessage *msg;
const GstStructure *structure;
gst_event_parse_sink_message (event, &msg);
structure = gst_message_get_structure (msg);
sstr = gst_structure_to_string (structure);
sink->last_message =
g_strdup_printf ("message ******* (%s:%s) M (type: %d, %s) %p",
GST_DEBUG_PAD_NAME (GST_BASE_SINK_CAST (sink)->sinkpad),
GST_MESSAGE_TYPE (msg), sstr, msg);
gst_message_unref (msg);
} else {
tstr = gst_event_type_get_name (GST_EVENT_TYPE (event));
if ((s = gst_event_get_structure (event))) {
sstr = gst_structure_to_string (s);
} else {
sstr = g_strdup ("");
}
sink->last_message =
g_strdup_printf ("event ******* (%s:%s) E (type: %s (%d), %s) %p",
GST_DEBUG_PAD_NAME (GST_BASE_SINK_CAST (sink)->sinkpad),
tstr, GST_EVENT_TYPE (event), sstr, event);
}
g_free (sstr);
GST_OBJECT_UNLOCK (sink);
gst_fake_sink_notify_last_message (sink);
}
return GST_BASE_SINK_CLASS (parent_class)->event (bsink, event);
}
static gboolean
gst_inter_audio_sink_query (GstBaseSink * sink, GstQuery * query)
{
GstInterAudioSink *interaudiosink = GST_INTER_AUDIO_SINK (sink);
gboolean ret;
GST_DEBUG_OBJECT (sink, "query");
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:{
gboolean live, us_live;
GstClockTime min_l, max_l;
GST_DEBUG_OBJECT (sink, "latency query");
if ((ret =
gst_base_sink_query_latency (GST_BASE_SINK_CAST (sink), &live,
&us_live, &min_l, &max_l))) {
GstClockTime base_latency, min_latency, max_latency;
/* we and upstream are both live, adjust the min_latency */
if (live && us_live) {
/* FIXME: The other side can change this value when it starts */
base_latency = interaudiosink->surface->audio_latency_time;
/* we cannot go lower than the buffer size and the min peer latency */
min_latency = base_latency + min_l;
/* the max latency is the max of the peer, we can delay an infinite
* amount of time. */
max_latency = (max_l == -1) ? -1 : (base_latency + max_l);
GST_DEBUG_OBJECT (sink,
"peer min %" GST_TIME_FORMAT ", our min latency: %"
GST_TIME_FORMAT, GST_TIME_ARGS (min_l),
GST_TIME_ARGS (min_latency));
GST_DEBUG_OBJECT (sink,
"peer max %" GST_TIME_FORMAT ", our max latency: %"
GST_TIME_FORMAT, GST_TIME_ARGS (max_l),
GST_TIME_ARGS (max_latency));
} else {
GST_DEBUG_OBJECT (sink,
"peer or we are not live, don't care about latency");
min_latency = min_l;
max_latency = max_l;
}
gst_query_set_latency (query, live, min_latency, max_latency);
}
break;
}
default:
ret =
GST_BASE_SINK_CLASS (gst_inter_audio_sink_parent_class)->query (sink,
query);
break;
}
return ret;
}
static void
gst_decklink_audio_sink_init (GstDecklinkAudioSink * self)
{
self->device_number = DEFAULT_DEVICE_NUMBER;
self->stream_align =
gst_audio_stream_align_new (48000, DEFAULT_ALIGNMENT_THRESHOLD,
DEFAULT_DISCONT_WAIT);
self->buffer_time = DEFAULT_BUFFER_TIME * 1000;
gst_base_sink_set_max_lateness (GST_BASE_SINK_CAST (self), 20 * GST_MSECOND);
}
static void print_buffer_metadata(WebKitVideoSink* sink, GstBuffer* buffer)
{
gchar dts_str[64], pts_str[64], dur_str[64];
gchar flag_str[100];
if (GST_BUFFER_DTS (buffer) != GST_CLOCK_TIME_NONE) {
g_snprintf (dts_str, sizeof (dts_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DTS (buffer)));
} else {
g_strlcpy (dts_str, "none", sizeof (dts_str));
}
if (GST_BUFFER_PTS (buffer) != GST_CLOCK_TIME_NONE) {
g_snprintf (pts_str, sizeof (pts_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_PTS (buffer)));
} else {
g_strlcpy (pts_str, "none", sizeof (pts_str));
}
if (GST_BUFFER_DURATION (buffer) != GST_CLOCK_TIME_NONE) {
g_snprintf (dur_str, sizeof (dur_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DURATION (buffer)));
} else {
g_strlcpy (dur_str, "none", sizeof (dur_str));
}
{
const char *flag_list[15] = {
"", "", "", "", "live", "decode-only", "discont", "resync", "corrupted",
"marker", "header", "gap", "droppable", "delta-unit", "in-caps"
};
guint i;
char *end = flag_str;
end[0] = '\0';
for (i = 0; i < G_N_ELEMENTS (flag_list); i++) {
if (GST_MINI_OBJECT_CAST (buffer)->flags & (1 << i)) {
strcpy (end, flag_list[i]);
end += strlen (end);
end[0] = ' ';
end[1] = '\0';
end++;
}
}
}
g_printerr ("chain ******* (%s:%s) (%u bytes, dts: %s, pts: %s"
", duration: %s, offset: %" G_GINT64_FORMAT ", offset_end: %"
G_GINT64_FORMAT ", flags: %08x %s) %p\n",
GST_DEBUG_PAD_NAME (GST_BASE_SINK_CAST (sink)->sinkpad),
(guint) gst_buffer_get_size (buffer), dts_str, pts_str,
dur_str, GST_BUFFER_OFFSET (buffer), GST_BUFFER_OFFSET_END (buffer),
GST_MINI_OBJECT_CAST (buffer)->flags, flag_str, buffer);
}
static GstFlowReturn
gst_fake_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstFakeSink *sink = GST_FAKE_SINK_CAST (bsink);
if (sink->num_buffers_left == 0)
goto eos;
if (sink->num_buffers_left != -1)
sink->num_buffers_left--;
if (!sink->silent) {
gchar dts_str[64], pts_str[64], dur_str[64];
gchar *flag_str, *meta_str;
GST_OBJECT_LOCK (sink);
g_free (sink->last_message);
if (GST_BUFFER_DTS (buf) != GST_CLOCK_TIME_NONE) {
g_snprintf (dts_str, sizeof (dts_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DTS (buf)));
} else {
g_strlcpy (dts_str, "none", sizeof (dts_str));
}
if (GST_BUFFER_PTS (buf) != GST_CLOCK_TIME_NONE) {
g_snprintf (pts_str, sizeof (pts_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_PTS (buf)));
} else {
g_strlcpy (pts_str, "none", sizeof (pts_str));
}
if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE) {
g_snprintf (dur_str, sizeof (dur_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
} else {
g_strlcpy (dur_str, "none", sizeof (dur_str));
}
flag_str = gst_buffer_get_flags_string (buf);
meta_str = gst_buffer_get_meta_string (buf);
sink->last_message =
g_strdup_printf ("chain ******* (%s:%s) (%u bytes, dts: %s, pts: %s"
", duration: %s, offset: %" G_GINT64_FORMAT ", offset_end: %"
G_GINT64_FORMAT ", flags: %08x %s, meta: %s) %p",
GST_DEBUG_PAD_NAME (GST_BASE_SINK_CAST (sink)->sinkpad),
(guint) gst_buffer_get_size (buf), dts_str, pts_str,
dur_str, GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf),
GST_MINI_OBJECT_CAST (buf)->flags, flag_str,
meta_str ? meta_str : "none", buf);
g_free (flag_str);
g_free (meta_str);
GST_OBJECT_UNLOCK (sink);
gst_fake_sink_notify_last_message (sink);
}
if (sink->signal_handoffs)
g_signal_emit (sink, gst_fake_sink_signals[SIGNAL_HANDOFF], 0, buf,
bsink->sinkpad);
if (sink->dump) {
GstMapInfo info;
if (gst_buffer_map (buf, &info, GST_MAP_READ)) {
gst_util_dump_mem (info.data, info.size);
gst_buffer_unmap (buf, &info);
}
}
if (sink->num_buffers_left == 0)
goto eos;
return GST_FLOW_OK;
/* ERRORS */
eos:
{
GST_DEBUG_OBJECT (sink, "we are EOS");
return GST_FLOW_EOS;
}
}
static GstFlowReturn
gst_decklink_video_sink_prepare (GstBaseSink * bsink, GstBuffer * buffer)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
GstVideoFrame vframe;
IDeckLinkMutableVideoFrame *frame;
guint8 *outdata, *indata;
GstFlowReturn flow_ret;
HRESULT ret;
GstClockTime timestamp, duration;
GstClockTime running_time, running_time_duration;
GstClockTime latency, render_delay;
GstClockTimeDiff ts_offset;
gint i;
GstDecklinkVideoFormat caps_format;
BMDPixelFormat format;
gint bpp;
GstVideoTimeCodeMeta *tc_meta;
GST_DEBUG_OBJECT (self, "Preparing buffer %p", buffer);
// FIXME: Handle no timestamps
if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
return GST_FLOW_ERROR;
}
caps_format = gst_decklink_type_from_video_format (self->info.finfo->format);
format = gst_decklink_pixel_format_from_type (caps_format);
bpp = gst_decklink_bpp_from_type (caps_format);
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
if (duration == GST_CLOCK_TIME_NONE) {
duration =
gst_util_uint64_scale_int (GST_SECOND, self->info.fps_d,
self->info.fps_n);
}
running_time =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp);
running_time_duration =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp + duration) - running_time;
/* See gst_base_sink_adjust_time() */
latency = gst_base_sink_get_latency (bsink);
render_delay = gst_base_sink_get_render_delay (bsink);
ts_offset = gst_base_sink_get_ts_offset (bsink);
running_time += latency;
if (ts_offset < 0) {
ts_offset = -ts_offset;
if ((GstClockTime) ts_offset < running_time)
running_time -= ts_offset;
else
running_time = 0;
} else {
running_time += ts_offset;
}
if (running_time > render_delay)
running_time -= render_delay;
else
running_time = 0;
ret = self->output->output->CreateVideoFrame (self->info.width,
self->info.height, self->info.stride[0], format, bmdFrameFlagDefault,
&frame);
if (ret != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to create video frame: 0x%08x", ret));
return GST_FLOW_ERROR;
}
if (!gst_video_frame_map (&vframe, &self->info, buffer, GST_MAP_READ)) {
GST_ERROR_OBJECT (self, "Failed to map video frame");
flow_ret = GST_FLOW_ERROR;
goto out;
}
frame->GetBytes ((void **) &outdata);
indata = (guint8 *) GST_VIDEO_FRAME_PLANE_DATA (&vframe, 0);
for (i = 0; i < self->info.height; i++) {
memcpy (outdata, indata, GST_VIDEO_FRAME_WIDTH (&vframe) * bpp);
indata += GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, 0);
outdata += frame->GetRowBytes ();
}
gst_video_frame_unmap (&vframe);
tc_meta = gst_buffer_get_video_time_code_meta (buffer);
if (tc_meta) {
BMDTimecodeFlags bflags = (BMDTimecodeFlags) 0;
gchar *tc_str;
if (((GstVideoTimeCodeFlags) (tc_meta->tc.
config.flags)) & GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME)
bflags = (BMDTimecodeFlags) (bflags | bmdTimecodeIsDropFrame);
else
bflags = (BMDTimecodeFlags) (bflags | bmdTimecodeFlagDefault);
if (tc_meta->tc.field_count == 2)
bflags = (BMDTimecodeFlags) (bflags | bmdTimecodeFieldMark);
tc_str = gst_video_time_code_to_string (&tc_meta->tc);
ret = frame->SetTimecodeFromComponents (self->timecode_format,
(uint8_t) tc_meta->tc.hours,
(uint8_t) tc_meta->tc.minutes,
(uint8_t) tc_meta->tc.seconds, (uint8_t) tc_meta->tc.frames, bflags);
if (ret != S_OK) {
GST_ERROR_OBJECT (self,
"Failed to set timecode %s to video frame: 0x%08x", tc_str, ret);
flow_ret = GST_FLOW_ERROR;
g_free (tc_str);
goto out;
}
GST_DEBUG_OBJECT (self, "Set frame timecode to %s", tc_str);
g_free (tc_str);
}
convert_to_internal_clock (self, &running_time, &running_time_duration);
GST_LOG_OBJECT (self, "Scheduling video frame %p at %" GST_TIME_FORMAT
" with duration %" GST_TIME_FORMAT, frame, GST_TIME_ARGS (running_time),
GST_TIME_ARGS (running_time_duration));
ret = self->output->output->ScheduleVideoFrame (frame,
running_time, running_time_duration, GST_SECOND);
if (ret != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to schedule frame: 0x%08x", ret));
flow_ret = GST_FLOW_ERROR;
goto out;
}
flow_ret = GST_FLOW_OK;
out:
frame->Release ();
return flow_ret;
}
static GstFlowReturn
gst_decklink_video_sink_prepare (GstBaseSink * bsink, GstBuffer * buffer)
{
GstDecklinkVideoSink *self = GST_DECKLINK_VIDEO_SINK_CAST (bsink);
GstVideoFrame vframe;
IDeckLinkMutableVideoFrame *frame;
guint8 *outdata, *indata;
GstFlowReturn flow_ret;
HRESULT ret;
GstClockTime timestamp, duration;
GstClockTime running_time, running_time_duration;
gint i;
GstClock *clock;
GST_DEBUG_OBJECT (self, "Preparing buffer %p", buffer);
// FIXME: Handle no timestamps
if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
return GST_FLOW_ERROR;
}
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
if (duration == GST_CLOCK_TIME_NONE) {
duration =
gst_util_uint64_scale_int (GST_SECOND, self->info.fps_d,
self->info.fps_n);
}
running_time =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp);
running_time_duration =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp + duration) - running_time;
// FIXME: https://bugzilla.gnome.org/show_bug.cgi?id=742916
// We need to drop late buffers here immediately instead of
// potentially overflowing the internal queue of the hardware
clock = gst_element_get_clock (GST_ELEMENT_CAST (self));
if (clock) {
GstClockTime clock_running_time, base_time, clock_time, latency,
max_lateness;
base_time = gst_element_get_base_time (GST_ELEMENT_CAST (self));
clock_time = gst_clock_get_time (clock);
if (base_time != GST_CLOCK_TIME_NONE && clock_time != GST_CLOCK_TIME_NONE) {
clock_running_time = clock_time - base_time;
latency = gst_base_sink_get_latency (GST_BASE_SINK_CAST (self));
max_lateness = gst_base_sink_get_max_lateness (GST_BASE_SINK_CAST (self));
if (clock_running_time >
running_time + running_time_duration + latency + max_lateness) {
GST_DEBUG_OBJECT (self,
"Late buffer: %" GST_TIME_FORMAT " > %" GST_TIME_FORMAT,
GST_TIME_ARGS (clock_running_time),
GST_TIME_ARGS (running_time + running_time_duration));
if (self->last_render_time == GST_CLOCK_TIME_NONE
|| (self->last_render_time < clock_running_time
&& clock_running_time - self->last_render_time >= GST_SECOND)) {
GST_DEBUG_OBJECT (self,
"Rendering frame nonetheless because we had none for more than 1s");
running_time = clock_running_time;
running_time_duration = 0;
} else {
GST_WARNING_OBJECT (self, "Dropping frame");
gst_object_unref (clock);
return GST_FLOW_OK;
}
}
}
gst_object_unref (clock);
}
self->last_render_time = running_time;
ret = self->output->output->CreateVideoFrame (self->info.width,
self->info.height, self->info.stride[0], bmdFormat8BitYUV,
bmdFrameFlagDefault, &frame);
if (ret != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to create video frame: 0x%08x", ret));
return GST_FLOW_ERROR;
}
if (!gst_video_frame_map (&vframe, &self->info, buffer, GST_MAP_READ)) {
GST_ERROR_OBJECT (self, "Failed to map video frame");
flow_ret = GST_FLOW_ERROR;
goto out;
}
frame->GetBytes ((void **) &outdata);
indata = (guint8 *) GST_VIDEO_FRAME_PLANE_DATA (&vframe, 0);
for (i = 0; i < self->info.height; i++) {
memcpy (outdata, indata, GST_VIDEO_FRAME_WIDTH (&vframe) * 2);
indata += GST_VIDEO_FRAME_PLANE_STRIDE (&vframe, 0);
outdata += frame->GetRowBytes ();
}
gst_video_frame_unmap (&vframe);
convert_to_internal_clock (self, &running_time, &running_time_duration);
GST_LOG_OBJECT (self, "Scheduling video frame %p at %" GST_TIME_FORMAT
" with duration %" GST_TIME_FORMAT, frame, GST_TIME_ARGS (running_time),
GST_TIME_ARGS (running_time_duration));
ret = self->output->output->ScheduleVideoFrame (frame,
running_time, running_time_duration, GST_SECOND);
if (ret != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to schedule frame: 0x%08x", ret));
flow_ret = GST_FLOW_ERROR;
goto out;
}
flow_ret = GST_FLOW_OK;
out:
frame->Release ();
return flow_ret;
}
static GstFlowReturn
gst_fake_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstFakeSink *sink = GST_FAKE_SINK_CAST (bsink);
if (sink->num_buffers_left == 0)
goto eos;
if (sink->num_buffers_left != -1)
sink->num_buffers_left--;
if (!sink->silent) {
gchar dts_str[64], pts_str[64], dur_str[64];
gchar flag_str[100];
GST_OBJECT_LOCK (sink);
g_free (sink->last_message);
if (GST_BUFFER_DTS (buf) != GST_CLOCK_TIME_NONE) {
g_snprintf (dts_str, sizeof (dts_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DTS (buf)));
} else {
g_strlcpy (dts_str, "none", sizeof (dts_str));
}
if (GST_BUFFER_PTS (buf) != GST_CLOCK_TIME_NONE) {
g_snprintf (pts_str, sizeof (pts_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_PTS (buf)));
} else {
g_strlcpy (pts_str, "none", sizeof (pts_str));
}
if (GST_BUFFER_DURATION (buf) != GST_CLOCK_TIME_NONE) {
g_snprintf (dur_str, sizeof (dur_str), "%" GST_TIME_FORMAT,
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
} else {
g_strlcpy (dur_str, "none", sizeof (dur_str));
}
{
const char *flag_list[15] = {
"", "", "", "", "live", "decode-only", "discont", "resync", "corrupted",
"marker", "header", "gap", "droppable", "delta-unit", "in-caps"
};
int i;
char *end = flag_str;
end[0] = '\0';
for (i = 0; i < G_N_ELEMENTS (flag_list); i++) {
if (GST_MINI_OBJECT_CAST (buf)->flags & (1 << i)) {
strcpy (end, flag_list[i]);
end += strlen (end);
end[0] = ' ';
end[1] = '\0';
end++;
}
}
}
sink->last_message =
g_strdup_printf ("chain ******* (%s:%s) (%u bytes, dts: %s, pts: %s"
", duration: %s, offset: %" G_GINT64_FORMAT ", offset_end: %"
G_GINT64_FORMAT ", flags: %08x %s) %p",
GST_DEBUG_PAD_NAME (GST_BASE_SINK_CAST (sink)->sinkpad),
(guint) gst_buffer_get_size (buf), dts_str, pts_str,
dur_str, GST_BUFFER_OFFSET (buf), GST_BUFFER_OFFSET_END (buf),
GST_MINI_OBJECT_CAST (buf)->flags, flag_str, buf);
GST_OBJECT_UNLOCK (sink);
gst_fake_sink_notify_last_message (sink);
}
if (sink->signal_handoffs)
g_signal_emit (sink, gst_fake_sink_signals[SIGNAL_HANDOFF], 0, buf,
bsink->sinkpad);
if (sink->dump) {
GstMapInfo info;
gst_buffer_map (buf, &info, GST_MAP_READ);
gst_util_dump_mem (info.data, info.size);
gst_buffer_unmap (buf, &info);
}
if (sink->num_buffers_left == 0)
goto eos;
return GST_FLOW_OK;
/* ERRORS */
eos:
{
GST_DEBUG_OBJECT (sink, "we are EOS");
return GST_FLOW_EOS;
}
}
static GstFlowReturn
gst_decklink_audio_sink_render (GstBaseSink * bsink, GstBuffer * buffer)
{
GstDecklinkAudioSink *self = GST_DECKLINK_AUDIO_SINK_CAST (bsink);
GstDecklinkVideoSink *video_sink;
GstFlowReturn flow_ret;
HRESULT ret;
GstClockTime timestamp, duration;
GstClockTime running_time, running_time_duration;
GstClockTime schedule_time, schedule_time_duration;
GstClockTime latency, render_delay;
GstClockTimeDiff ts_offset;
GstMapInfo map_info;
const guint8 *data;
gsize len, written_all;
gboolean discont;
GST_DEBUG_OBJECT (self, "Rendering buffer %p", buffer);
// FIXME: Handle no timestamps
if (!GST_BUFFER_TIMESTAMP_IS_VALID (buffer)) {
return GST_FLOW_ERROR;
}
if (GST_BASE_SINK_CAST (self)->flushing) {
return GST_FLOW_FLUSHING;
}
// If we're called before output is actually started, start pre-rolling
if (!self->output->started) {
self->output->output->BeginAudioPreroll ();
}
video_sink =
GST_DECKLINK_VIDEO_SINK (gst_object_ref (self->output->videosink));
timestamp = GST_BUFFER_TIMESTAMP (buffer);
duration = GST_BUFFER_DURATION (buffer);
discont = gst_audio_stream_align_process (self->stream_align,
GST_BUFFER_IS_DISCONT (buffer), timestamp,
gst_buffer_get_size (buffer) / self->info.bpf, ×tamp, &duration,
NULL);
if (discont && self->resampler)
gst_audio_resampler_reset (self->resampler);
if (GST_BASE_SINK_CAST (self)->segment.rate < 0.0) {
GstMapInfo out_map;
gint out_frames = gst_buffer_get_size (buffer) / self->info.bpf;
buffer = gst_buffer_make_writable (gst_buffer_ref (buffer));
gst_buffer_map (buffer, &out_map, GST_MAP_READWRITE);
if (self->info.finfo->format == GST_AUDIO_FORMAT_S16) {
gint16 *swap_data = (gint16 *) out_map.data;
gint16 *swap_data_end =
swap_data + (out_frames - 1) * self->info.channels;
gint16 swap_tmp[16];
while (out_frames > 0) {
memcpy (&swap_tmp, swap_data, self->info.bpf);
memcpy (swap_data, swap_data_end, self->info.bpf);
memcpy (swap_data_end, &swap_tmp, self->info.bpf);
swap_data += self->info.channels;
swap_data_end -= self->info.channels;
out_frames -= 2;
}
} else {
gint32 *swap_data = (gint32 *) out_map.data;
gint32 *swap_data_end =
swap_data + (out_frames - 1) * self->info.channels;
gint32 swap_tmp[16];
while (out_frames > 0) {
memcpy (&swap_tmp, swap_data, self->info.bpf);
memcpy (swap_data, swap_data_end, self->info.bpf);
memcpy (swap_data_end, &swap_tmp, self->info.bpf);
swap_data += self->info.channels;
swap_data_end -= self->info.channels;
out_frames -= 2;
}
}
gst_buffer_unmap (buffer, &out_map);
} else {
gst_buffer_ref (buffer);
}
if (self->resampler) {
gint in_frames = gst_buffer_get_size (buffer) / self->info.bpf;
gint out_frames =
gst_audio_resampler_get_out_frames (self->resampler, in_frames);
GstBuffer *out_buf = gst_buffer_new_and_alloc (out_frames * self->info.bpf);
GstMapInfo out_map;
gst_buffer_map (buffer, &map_info, GST_MAP_READ);
gst_buffer_map (out_buf, &out_map, GST_MAP_READWRITE);
gst_audio_resampler_resample (self->resampler, (gpointer *) & map_info.data,
in_frames, (gpointer *) & out_map.data, out_frames);
gst_buffer_unmap (out_buf, &out_map);
gst_buffer_unmap (buffer, &map_info);
buffer = out_buf;
}
gst_buffer_map (buffer, &map_info, GST_MAP_READ);
data = map_info.data;
len = map_info.size / self->info.bpf;
written_all = 0;
do {
GstClockTime timestamp_now =
timestamp + gst_util_uint64_scale (written_all, GST_SECOND,
self->info.rate);
guint32 buffered_samples;
GstClockTime buffered_time;
guint32 written = 0;
GstClock *clock;
GstClockTime clock_ahead;
if (GST_BASE_SINK_CAST (self)->flushing) {
flow_ret = GST_FLOW_FLUSHING;
break;
}
running_time =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp_now);
running_time_duration =
gst_segment_to_running_time (&GST_BASE_SINK_CAST (self)->segment,
GST_FORMAT_TIME, timestamp_now + duration) - running_time;
/* See gst_base_sink_adjust_time() */
latency = gst_base_sink_get_latency (bsink);
render_delay = gst_base_sink_get_render_delay (bsink);
ts_offset = gst_base_sink_get_ts_offset (bsink);
running_time += latency;
if (ts_offset < 0) {
ts_offset = -ts_offset;
if ((GstClockTime) ts_offset < running_time)
running_time -= ts_offset;
else
running_time = 0;
} else {
running_time += ts_offset;
}
if (running_time > render_delay)
running_time -= render_delay;
else
running_time = 0;
clock = gst_element_get_clock (GST_ELEMENT_CAST (self));
clock_ahead = 0;
if (clock) {
GstClockTime clock_now = gst_clock_get_time (clock);
GstClockTime base_time =
gst_element_get_base_time (GST_ELEMENT_CAST (self));
gst_object_unref (clock);
clock = NULL;
if (clock_now != GST_CLOCK_TIME_NONE && base_time != GST_CLOCK_TIME_NONE) {
GST_DEBUG_OBJECT (self,
"Clock time %" GST_TIME_FORMAT ", base time %" GST_TIME_FORMAT
", target running time %" GST_TIME_FORMAT,
GST_TIME_ARGS (clock_now), GST_TIME_ARGS (base_time),
GST_TIME_ARGS (running_time));
if (clock_now > base_time)
clock_now -= base_time;
else
clock_now = 0;
if (clock_now < running_time)
clock_ahead = running_time - clock_now;
}
}
GST_DEBUG_OBJECT (self,
"Ahead %" GST_TIME_FORMAT " of the clock running time",
GST_TIME_ARGS (clock_ahead));
if (self->output->
output->GetBufferedAudioSampleFrameCount (&buffered_samples) != S_OK)
buffered_samples = 0;
buffered_time =
gst_util_uint64_scale (buffered_samples, GST_SECOND, self->info.rate);
buffered_time /= ABS (GST_BASE_SINK_CAST (self)->segment.rate);
GST_DEBUG_OBJECT (self,
"Buffered %" GST_TIME_FORMAT " in the driver (%u samples)",
GST_TIME_ARGS (buffered_time), buffered_samples);
// We start waiting once we have more than buffer-time buffered
if (buffered_time > self->buffer_time || clock_ahead > self->buffer_time) {
GstClockReturn clock_ret;
GstClockTime wait_time = running_time;
GST_DEBUG_OBJECT (self,
"Buffered enough, wait for preroll or the clock or flushing");
if (wait_time < self->buffer_time)
wait_time = 0;
else
wait_time -= self->buffer_time;
flow_ret =
gst_base_sink_do_preroll (GST_BASE_SINK_CAST (self),
GST_MINI_OBJECT_CAST (buffer));
if (flow_ret != GST_FLOW_OK)
break;
clock_ret =
gst_base_sink_wait_clock (GST_BASE_SINK_CAST (self), wait_time, NULL);
if (GST_BASE_SINK_CAST (self)->flushing) {
flow_ret = GST_FLOW_FLUSHING;
break;
}
// Rerun the whole loop again
if (clock_ret == GST_CLOCK_UNSCHEDULED)
continue;
}
schedule_time = running_time;
schedule_time_duration = running_time_duration;
gst_decklink_video_sink_convert_to_internal_clock (video_sink,
&schedule_time, &schedule_time_duration);
GST_LOG_OBJECT (self, "Scheduling audio samples at %" GST_TIME_FORMAT
" with duration %" GST_TIME_FORMAT, GST_TIME_ARGS (schedule_time),
GST_TIME_ARGS (schedule_time_duration));
ret = self->output->output->ScheduleAudioSamples ((void *) data, len,
schedule_time, GST_SECOND, &written);
if (ret != S_OK) {
bool is_running = true;
self->output->output->IsScheduledPlaybackRunning (&is_running);
if (is_running && !GST_BASE_SINK_CAST (self)->flushing
&& self->output->started) {
GST_ELEMENT_ERROR (self, STREAM, FAILED, (NULL),
("Failed to schedule frame: 0x%08lx", (unsigned long) ret));
flow_ret = GST_FLOW_ERROR;
break;
} else {
// Ignore the error and go out of the loop here, we're shutting down
// or are not started yet and there's nothing we can do at this point
GST_INFO_OBJECT (self,
"Ignoring scheduling error 0x%08x because we're not started yet"
" or not anymore", (guint) ret);
flow_ret = GST_FLOW_OK;
break;
}
}
len -= written;
data += written * self->info.bpf;
if (self->resampler)
written_all += written * ABS (GST_BASE_SINK_CAST (self)->segment.rate);
else
written_all += written;
flow_ret = GST_FLOW_OK;
} while (len > 0);
gst_buffer_unmap (buffer, &map_info);
gst_buffer_unref (buffer);
GST_DEBUG_OBJECT (self, "Returning %s", gst_flow_get_name (flow_ret));
return flow_ret;
}
static gboolean
gst_decklink_audio_sink_query (GstBaseSink * bsink, GstQuery * query)
{
GstDecklinkAudioSink *self = GST_DECKLINK_AUDIO_SINK (bsink);
gboolean res = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:
{
gboolean live, us_live;
GstClockTime min_l, max_l;
GST_DEBUG_OBJECT (self, "latency query");
/* ask parent first, it will do an upstream query for us. */
if ((res =
gst_base_sink_query_latency (GST_BASE_SINK_CAST (self), &live,
&us_live, &min_l, &max_l))) {
GstClockTime base_latency, min_latency, max_latency;
/* we and upstream are both live, adjust the min_latency */
if (live && us_live) {
GST_OBJECT_LOCK (self);
if (!self->info.rate) {
GST_OBJECT_UNLOCK (self);
GST_DEBUG_OBJECT (self,
"we are not negotiated, can't report latency yet");
res = FALSE;
goto done;
}
base_latency = self->buffer_time * 1000;
GST_OBJECT_UNLOCK (self);
/* we cannot go lower than the buffer size and the min peer latency */
min_latency = base_latency + min_l;
/* the max latency is the max of the peer, we can delay an infinite
* amount of time. */
max_latency =
(max_l ==
GST_CLOCK_TIME_NONE) ? GST_CLOCK_TIME_NONE : (base_latency +
max_l);
GST_DEBUG_OBJECT (self,
"peer min %" GST_TIME_FORMAT ", our min latency: %"
GST_TIME_FORMAT, GST_TIME_ARGS (min_l),
GST_TIME_ARGS (min_latency));
GST_DEBUG_OBJECT (self,
"peer max %" GST_TIME_FORMAT ", our max latency: %"
GST_TIME_FORMAT, GST_TIME_ARGS (max_l),
GST_TIME_ARGS (max_latency));
} else {
GST_DEBUG_OBJECT (self,
"peer or we are not live, don't care about latency");
min_latency = min_l;
max_latency = max_l;
}
gst_query_set_latency (query, live, min_latency, max_latency);
}
break;
}
default:
res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
break;
}
done:
return res;
}
