static gboolean
gst_goom_render (GstAudioVisualizer * base, GstBuffer * audio,
GstVideoFrame * video)
{
GstGoom *goom = GST_GOOM (base);
GstMapInfo amap;
gint16 datain[2][GOOM_SAMPLES];
gint16 *adata;
gint i;
/* get next GOOM_SAMPLES, we have at least this amount of samples */
gst_buffer_map (audio, &amap, GST_MAP_READ);
adata = (gint16 *) amap.data;
if (goom->channels == 2) {
for (i = 0; i < GOOM_SAMPLES; i++) {
datain[0][i] = *adata++;
datain[1][i] = *adata++;
}
} else {
for (i = 0; i < GOOM_SAMPLES; i++) {
datain[0][i] = *adata;
datain[1][i] = *adata++;
}
}
video->data[0] = goom_update (&(goom->goomdata), datain);
gst_buffer_unmap (audio, &amap);
return TRUE;
}
static gboolean
gst_goom_src_setcaps (GstPad * pad, GstCaps * caps)
{
GstGoom *goom;
GstStructure *structure;
goom = GST_GOOM (GST_PAD_PARENT (pad));
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "width", &goom->width) ||
!gst_structure_get_int (structure, "height", &goom->height) ||
!gst_structure_get_fraction (structure, "framerate", &goom->fps_n,
&goom->fps_d))
return FALSE;
goom_set_resolution (goom->plugin, goom->width, goom->height);
/* size of the output buffer in bytes, depth is always 4 bytes */
goom->outsize = goom->width * goom->height * 4;
goom->duration =
gst_util_uint64_scale_int (GST_SECOND, goom->fps_d, goom->fps_n);
goom->spf = gst_util_uint64_scale_int (goom->rate, goom->fps_d, goom->fps_n);
goom->bpf = goom->spf * goom->bps;
GST_DEBUG_OBJECT (goom, "dimension %dx%d, framerate %d/%d, spf %d",
goom->width, goom->height, goom->fps_n, goom->fps_d, goom->spf);
return TRUE;
}
static GstStateChangeReturn
gst_goom_change_state (GstElement * element, GstStateChange transition)
{
GstGoom *goom = GST_GOOM (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_goom_reset (goom);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static GstStateChangeReturn
gst_goom_change_state (GstElement * element, GstStateChange transition)
{
GstGoom *goom = GST_GOOM (element);
GstStateChangeReturn ret;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
gst_goom_reset (goom);
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (goom->pool) {
gst_buffer_pool_set_active (goom->pool, FALSE);
gst_object_replace ((GstObject **) & goom->pool, NULL);
}
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static gboolean
gst_goom_src_query (GstPad * pad, GstQuery * query)
{
gboolean res = FALSE;
GstGoom *goom;
goom = GST_GOOM (gst_pad_get_parent (pad));
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:
{
/* We need to send the query upstream and add the returned latency to our
* own */
GstClockTime min_latency, max_latency;
gboolean us_live;
GstClockTime our_latency;
guint max_samples;
if (goom->rate == 0)
break;
if ((res = gst_pad_peer_query (goom->sinkpad, query))) {
gst_query_parse_latency (query, &us_live, &min_latency, &max_latency);
GST_DEBUG_OBJECT (goom, "Peer latency: min %"
GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
/* the max samples we must buffer buffer */
max_samples = MAX (GOOM_SAMPLES, goom->spf);
our_latency =
gst_util_uint64_scale_int (max_samples, GST_SECOND, goom->rate);
GST_DEBUG_OBJECT (goom, "Our latency: %" GST_TIME_FORMAT,
GST_TIME_ARGS (our_latency));
/* we add some latency but only if we need to buffer more than what
* upstream gives us */
min_latency += our_latency;
if (max_latency != -1)
max_latency += our_latency;
GST_DEBUG_OBJECT (goom, "Calculated total latency : min %"
GST_TIME_FORMAT " max %" GST_TIME_FORMAT,
GST_TIME_ARGS (min_latency), GST_TIME_ARGS (max_latency));
gst_query_set_latency (query, TRUE, min_latency, max_latency);
}
break;
}
default:
res = gst_pad_peer_query (goom->sinkpad, query);
break;
}
gst_object_unref (goom);
return res;
}
static void
gst_goom_finalize (GObject * object)
{
GstGoom *goom = GST_GOOM (object);
goom_close (&(goom->goomdata));
G_OBJECT_CLASS (gst_goom_parent_class)->finalize (object);
}
static gboolean
gst_goom_setup (GstAudioVisualizer * base)
{
GstGoom *goom = GST_GOOM (base);
goom->width = GST_VIDEO_INFO_WIDTH (&base->vinfo);
goom->height = GST_VIDEO_INFO_HEIGHT (&base->vinfo);
goom_set_resolution (&(goom->goomdata), goom->width, goom->height);
return TRUE;
}
static void
gst_goom_finalize (GObject * object)
{
GstGoom *goom = GST_GOOM (object);
goom_close (goom->plugin);
goom->plugin = NULL;
g_object_unref (goom->adapter);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_goom_sink_setcaps (GstPad * pad, GstCaps * caps)
{
GstGoom *goom;
GstStructure *structure;
gboolean res;
goom = GST_GOOM (GST_PAD_PARENT (pad));
structure = gst_caps_get_structure (caps, 0);
res = gst_structure_get_int (structure, "channels", &goom->channels);
res &= gst_structure_get_int (structure, "rate", &goom->rate);
goom->bps = goom->channels * sizeof (gint16);
return res;
}
static gboolean
gst_goom_sink_event (GstPad * pad, GstEvent * event)
{
gboolean res;
GstGoom *goom;
goom = GST_GOOM (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_START:
res = gst_pad_push_event (goom->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
gst_goom_reset (goom);
res = gst_pad_push_event (goom->srcpad, event);
break;
case GST_EVENT_NEWSEGMENT:
{
GstFormat format;
gdouble rate, arate;
gint64 start, stop, time;
gboolean update;
/* the newsegment values are used to clip the input samples
* and to convert the incomming timestamps to running time so
* we can do QoS */
gst_event_parse_new_segment_full (event, &update, &rate, &arate, &format,
&start, &stop, &time);
/* now configure the values */
gst_segment_set_newsegment_full (&goom->segment, update,
rate, arate, format, start, stop, time);
res = gst_pad_push_event (goom->srcpad, event);
break;
}
default:
res = gst_pad_push_event (goom->srcpad, event);
break;
}
gst_object_unref (goom);
return res;
}
static gboolean
gst_goom_sink_event (GstPad * pad, GstObject * parent, GstEvent * event)
{
gboolean res;
GstGoom *goom;
goom = GST_GOOM (parent);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_CAPS:
{
GstCaps *caps;
gst_event_parse_caps (event, &caps);
res = gst_goom_sink_setcaps (goom, caps);
gst_event_unref (event);
break;
}
case GST_EVENT_FLUSH_START:
res = gst_pad_push_event (goom->srcpad, event);
break;
case GST_EVENT_FLUSH_STOP:
gst_goom_reset (goom);
res = gst_pad_push_event (goom->srcpad, event);
break;
case GST_EVENT_SEGMENT:
{
/* the newsegment values are used to clip the input samples
* and to convert the incomming timestamps to running time so
* we can do QoS */
gst_event_copy_segment (event, &goom->segment);
res = gst_pad_push_event (goom->srcpad, event);
break;
}
default:
res = gst_pad_push_event (goom->srcpad, event);
break;
}
return res;
}
static gboolean
gst_goom_src_event (GstPad * pad, GstEvent * event)
{
gboolean res;
GstGoom *goom;
goom = GST_GOOM (gst_pad_get_parent (pad));
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_QOS:
{
gdouble proportion;
GstClockTimeDiff diff;
GstClockTime timestamp;
gst_event_parse_qos (event, &proportion, &diff, ×tamp);
/* save stuff for the _chain() function */
GST_OBJECT_LOCK (goom);
goom->proportion = proportion;
if (diff >= 0)
/* we're late, this is a good estimate for next displayable
* frame (see part-qos.txt) */
goom->earliest_time = timestamp + 2 * diff + goom->duration;
else
goom->earliest_time = timestamp + diff;
GST_OBJECT_UNLOCK (goom);
res = gst_pad_push_event (goom->sinkpad, event);
break;
}
default:
res = gst_pad_push_event (goom->sinkpad, event);
break;
}
gst_object_unref (goom);
return res;
}
static GstFlowReturn
gst_goom_chain (GstPad * pad, GstBuffer * buffer)
{
GstGoom *goom;
GstFlowReturn ret;
GstBuffer *outbuf = NULL;
goom = GST_GOOM (gst_pad_get_parent (pad));
if (goom->bps == 0) {
ret = GST_FLOW_NOT_NEGOTIATED;
goto beach;
}
/* If we don't have an output format yet, preallocate a buffer to try and
* set one */
if (GST_PAD_CAPS (goom->srcpad) == NULL) {
ret = get_buffer (goom, &outbuf);
if (ret != GST_FLOW_OK) {
gst_buffer_unref (buffer);
goto beach;
}
}
/* don't try to combine samples from discont buffer */
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
gst_adapter_clear (goom->adapter);
}
GST_DEBUG_OBJECT (goom,
"Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
GST_BUFFER_SIZE (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));
/* Collect samples until we have enough for an output frame */
gst_adapter_push (goom->adapter, buffer);
ret = GST_FLOW_OK;
while (TRUE) {
const guint16 *data;
gboolean need_skip;
guchar *out_frame;
gint i;
guint avail, to_flush;
guint64 dist, timestamp;
avail = gst_adapter_available (goom->adapter);
GST_DEBUG_OBJECT (goom, "avail now %u", avail);
/* we need GOOM_SAMPLES to get a meaningful result from goom. */
if (avail < (GOOM_SAMPLES * goom->bps))
break;
/* we also need enough samples to produce one frame at least */
if (avail < goom->bpf)
break;
GST_DEBUG_OBJECT (goom, "processing buffer");
/* get timestamp of the current adapter byte */
timestamp = gst_adapter_prev_timestamp (goom->adapter, &dist);
if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
/* convert bytes to time */
dist /= goom->bps;
timestamp += gst_util_uint64_scale_int (dist, GST_SECOND, goom->rate);
}
if (timestamp != -1) {
gint64 qostime;
qostime = gst_segment_to_running_time (&goom->segment, GST_FORMAT_TIME,
timestamp);
qostime += goom->duration;
GST_OBJECT_LOCK (goom);
/* check for QoS, don't compute buffers that are known to be late */
need_skip = goom->earliest_time != -1 && qostime <= goom->earliest_time;
GST_OBJECT_UNLOCK (goom);
if (need_skip) {
GST_WARNING_OBJECT (goom,
"QoS: skip ts: %" GST_TIME_FORMAT ", earliest: %" GST_TIME_FORMAT,
GST_TIME_ARGS (qostime), GST_TIME_ARGS (goom->earliest_time));
goto skip;
}
}
/* get next GOOM_SAMPLES, we have at least this amount of samples */
data =
(const guint16 *) gst_adapter_peek (goom->adapter,
GOOM_SAMPLES * goom->bps);
if (goom->channels == 2) {
for (i = 0; i < GOOM_SAMPLES; i++) {
goom->datain[0][i] = *data++;
goom->datain[1][i] = *data++;
}
} else {
for (i = 0; i < GOOM_SAMPLES; i++) {
goom->datain[0][i] = *data;
goom->datain[1][i] = *data++;
}
}
/* alloc a buffer if we don't have one yet, this happens
* when we pushed a buffer in this while loop before */
if (outbuf == NULL) {
ret = get_buffer (goom, &outbuf);
if (ret != GST_FLOW_OK) {
goto beach;
}
}
GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
GST_BUFFER_DURATION (outbuf) = goom->duration;
GST_BUFFER_SIZE (outbuf) = goom->outsize;
out_frame = (guchar *) goom_update (goom->plugin, goom->datain, 0, 0);
memcpy (GST_BUFFER_DATA (outbuf), out_frame, goom->outsize);
GST_DEBUG ("Pushing frame with time=%" GST_TIME_FORMAT ", duration=%"
GST_TIME_FORMAT, GST_TIME_ARGS (timestamp),
GST_TIME_ARGS (goom->duration));
ret = gst_pad_push (goom->srcpad, outbuf);
outbuf = NULL;
skip:
/* Now flush the samples we needed for this frame, which might be more than
* the samples we used (GOOM_SAMPLES). */
to_flush = goom->bpf;
GST_DEBUG_OBJECT (goom, "finished frame, flushing %u bytes from input",
to_flush);
gst_adapter_flush (goom->adapter, to_flush);
if (ret != GST_FLOW_OK)
break;
}
if (outbuf != NULL)
gst_buffer_unref (outbuf);
beach:
gst_object_unref (goom);
return ret;
}
static GstFlowReturn
gst_goom_chain (GstPad * pad, GstBuffer * buffer)
{
GstGoom *goom;
GstFlowReturn ret;
GstBuffer *outbuf = NULL;
goom = GST_GOOM (gst_pad_get_parent (pad));
/* If we don't have an output format yet, preallocate a buffer to try and
* set one */
if (GST_PAD_CAPS (goom->srcpad) == NULL) {
ret = get_buffer (goom, &outbuf);
if (ret != GST_FLOW_OK) {
gst_buffer_unref (buffer);
goto beach;
}
}
/* don't try to combine samples from discont buffer */
if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
gst_adapter_clear (goom->adapter);
goom->next_ts = -1;
}
/* Match timestamps from the incoming audio */
if (GST_BUFFER_TIMESTAMP (buffer) != GST_CLOCK_TIME_NONE)
goom->next_ts = GST_BUFFER_TIMESTAMP (buffer);
GST_DEBUG_OBJECT (goom,
"Input buffer has %d samples, time=%" G_GUINT64_FORMAT,
GST_BUFFER_SIZE (buffer) / goom->bps, GST_BUFFER_TIMESTAMP (buffer));
/* Collect samples until we have enough for an output frame */
gst_adapter_push (goom->adapter, buffer);
ret = GST_FLOW_OK;
while (TRUE) {
const guint16 *data;
gboolean need_skip;
guchar *out_frame;
gint i, c;
guint avail, to_flush;
Message m;
avail = gst_adapter_available (goom->adapter);
GST_DEBUG_OBJECT (goom, "avail now %u", avail);
/* we need GOOM_SAMPLES to get a meaningful result from goom. */
if (avail < (GOOM_SAMPLES * goom->bps))
break;
/* we also need enough samples to produce one frame at least */
if (avail < goom->bpf)
break;
GST_DEBUG_OBJECT (goom, "processing buffer");
if (goom->next_ts != -1) {
gint64 qostime;
qostime = gst_segment_to_running_time (&goom->segment, GST_FORMAT_TIME,
goom->next_ts);
GST_OBJECT_LOCK (goom);
/* check for QoS, don't compute buffers that are known to be late */
need_skip = goom->earliest_time != -1 && qostime <= goom->earliest_time;
GST_OBJECT_UNLOCK (goom);
if (need_skip) {
GST_WARNING_OBJECT (goom,
"QoS: skip ts: %" GST_TIME_FORMAT ", earliest: %" GST_TIME_FORMAT,
GST_TIME_ARGS (qostime), GST_TIME_ARGS (goom->earliest_time));
goto skip;
}
}
/* get next GOOM_SAMPLES, we have at least this amount of samples */
data =
(const guint16 *) gst_adapter_peek (goom->adapter,
GOOM_SAMPLES * goom->bps);
if (goom->channels == 2) {
for (i = 0; i < GOOM_SAMPLES; i++) {
goom->datain[0][i] = *data++;
goom->datain[1][i] = *data++;
}
} else {
for (i = 0; i < GOOM_SAMPLES; i++) {
goom->datain[0][i] = *data;
goom->datain[1][i] = *data++;
}
}
/* alloc a buffer if we don't have one yet, this happens
* when we pushed a buffer in this while loop before */
if (outbuf == NULL) {
ret = get_buffer (goom, &outbuf);
if (ret != GST_FLOW_OK) {
goto beach;
}
}
GST_BUFFER_TIMESTAMP (outbuf) = goom->next_ts;
GST_BUFFER_DURATION (outbuf) = goom->duration;
GST_BUFFER_SIZE (outbuf) = goom->outsize;
//gst_spectrum_transform_ip(gstSpectrum,buffer);
//print_spectrum_message(gstSpectrum);
//readMessage(&m);
//c = m.magnitude[0] + m.magnitude[1] + m.magnitude[2] + m.magnitude[3] + m.magnitude[4];
//if (c != 0) {
/*printf("\n\n [");
for (i = 0; i < 5; i++)
printf("%f $ ", m.magnitude[i]);
printf("] \n\n");*/
/*g_print ("Goom: %" GST_TIME_FORMAT ", message received: %" GST_TIME_FORMAT "\n",
GST_TIME_ARGS (goom->next_ts), GST_TIME_ARGS (m.timestamp));*/
//}
out_frame = (guchar *) goom_update (goom->plugin, goom->datain, 0, 0);
memcpy (GST_BUFFER_DATA (outbuf), out_frame, goom->outsize);
GST_DEBUG ("Pushing frame with time=%" GST_TIME_FORMAT ", duration=%"
GST_TIME_FORMAT, GST_TIME_ARGS (goom->next_ts),
GST_TIME_ARGS (goom->duration));
ret = gst_pad_push (goom->srcpad, outbuf);
outbuf = NULL;
skip:
/* interpollate next timestamp */
if (goom->next_ts != -1)
goom->next_ts += goom->duration;
/* Now flush the samples we needed for this frame, which might be more than
* the samples we used (GOOM_SAMPLES). */
to_flush = goom->bpf;
GST_DEBUG_OBJECT (goom, "finished frame, flushing %u bytes from input",
to_flush);
gst_adapter_flush (goom->adapter, to_flush);
if (ret != GST_FLOW_OK)
break;
}
if (outbuf != NULL)
gst_buffer_unref (outbuf);
beach:
gst_object_unref (goom);
return ret;
}
