static gboolean
gst_dtmf_src_negotiate (GstBaseSrc * basesrc)
{
GstDTMFSrc *dtmfsrc = GST_DTMF_SRC (basesrc);
GstCaps *caps;
GstStructure *s;
gboolean ret;
caps = gst_pad_get_allowed_caps (GST_BASE_SRC_PAD (basesrc));
if (!caps)
caps =
gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD
(basesrc)));
if (gst_caps_is_empty (caps))
return FALSE;
gst_caps_truncate (caps);
s = gst_caps_get_structure (caps, 0);
gst_structure_fixate_field_nearest_int (s, "rate", DEFAULT_SAMPLE_RATE);
if (!gst_structure_get_int (s, "rate", &dtmfsrc->sample_rate)) {
GST_ERROR_OBJECT (dtmfsrc, "Could not get rate");
gst_caps_unref (caps);
return FALSE;
}
ret = gst_pad_set_caps (GST_BASE_SRC_PAD (basesrc), caps);
gst_caps_unref (caps);
return ret;
}
static GstCaps *
gst_decklink_audio_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
{
GstDecklinkAudioSrc *self = GST_DECKLINK_AUDIO_SRC_CAST (bsrc);
GstCaps *caps;
// We don't support renegotiation
caps = gst_pad_get_current_caps (GST_BASE_SRC_PAD (bsrc));
if (!caps) {
GstCaps *channel_filter, *templ;
templ = gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (bsrc));
channel_filter =
gst_caps_new_simple ("audio/x-raw", "channels", G_TYPE_INT,
self->channels, NULL);
caps = gst_caps_intersect (channel_filter, templ);
gst_caps_unref (channel_filter);
gst_caps_unref (templ);
}
if (filter) {
GstCaps *tmp =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = tmp;
}
return caps;
}
static GstFlowReturn
gst_win_inet_src_create (GstPushSrc * pushsrc, GstBuffer ** buffer)
{
GstWinInetSrc *self = GST_WIN_INET_SRC (pushsrc);
GstBaseSrc *basesrc = GST_BASE_SRC (pushsrc);
GstBuffer *buf = NULL;
GstFlowReturn ret = GST_FLOW_OK;
DWORD bytes_read = 0;
do {
GstCaps *caps = GST_PAD_CAPS (GST_BASE_SRC_PAD (self));
if (self->icy_caps != NULL)
caps = self->icy_caps;
ret = gst_pad_alloc_buffer (GST_BASE_SRC_PAD (basesrc),
self->cur_offset, basesrc->blocksize, caps, &buf);
if (G_LIKELY (ret == GST_FLOW_OK)) {
if (InternetReadFile (self->url, GST_BUFFER_DATA (buf),
basesrc->blocksize, &bytes_read)) {
if (bytes_read == 0) {
if (self->poll_mode) {
if (gst_win_inet_src_open (self)) {
gst_buffer_unref (buf);
buf = NULL;
} else {
ret = GST_FLOW_ERROR;
}
} else {
GST_ERROR_OBJECT (self, "short read (eof?)");
ret = GST_FLOW_UNEXPECTED;
}
}
} else {
GST_ERROR_OBJECT (self, "InternetReadFile failed: 0x%08lx",
GetLastError ());
ret = GST_FLOW_ERROR;
}
}
}
while (bytes_read == 0 && ret == GST_FLOW_OK);
if (ret == GST_FLOW_OK) {
GST_BUFFER_SIZE (buf) = bytes_read;
self->cur_offset += bytes_read;
*buffer = buf;
} else {
if (buf != NULL)
gst_buffer_unref (buf);
}
return ret;
}
static int
gst_dv1394src_iec61883_receive (unsigned char *data, int len,
int complete, void *cbdata)
{
GstDV1394Src *dv1394src = GST_DV1394SRC (cbdata);
if (G_UNLIKELY (!GST_PAD_CAPS (GST_BASE_SRC_PAD (dv1394src)))) {
GstCaps *caps;
unsigned char *p = data;
// figure format (NTSC/PAL)
if (p[3] & 0x80) {
// PAL
dv1394src->frame_size = PAL_FRAMESIZE;
dv1394src->frame_rate = PAL_FRAMERATE;
GST_DEBUG ("PAL data");
caps = gst_caps_new_simple ("video/x-dv",
"format", G_TYPE_STRING, "PAL",
"systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
} else {
// NTSC (untested)
dv1394src->frame_size = NTSC_FRAMESIZE;
dv1394src->frame_rate = NTSC_FRAMERATE;
GST_DEBUG
("NTSC data [untested] - please report success/failure to <*****@*****.**>");
caps = gst_caps_new_simple ("video/x-dv",
"format", G_TYPE_STRING, "NTSC",
"systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
}
gst_pad_set_caps (GST_BASE_SRC_PAD (dv1394src), caps);
gst_caps_unref (caps);
}
dv1394src->frame = NULL;
if (G_LIKELY ((dv1394src->frame_sequence + 1) % (dv1394src->skip +
dv1394src->consecutive) < dv1394src->consecutive)) {
if (complete && len == dv1394src->frame_size) {
guint8 *bufdata;
GstBuffer *buf;
buf = gst_buffer_new_and_alloc (dv1394src->frame_size);
GST_BUFFER_OFFSET (buf) = dv1394src->frame_sequence;
bufdata = GST_BUFFER_DATA (buf);
memcpy (bufdata, data, len);
dv1394src->buf = buf;
}
}
dv1394src->frame_sequence++;
return 0;
}
static GstFlowReturn
gst_neonhttp_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
{
GstNeonhttpSrc *src;
GstBaseSrc *basesrc;
GstFlowReturn ret;
gint read;
src = GST_NEONHTTP_SRC (psrc);
basesrc = GST_BASE_SRC_CAST (psrc);
/* The caller should know the number of bytes and not read beyond EOS. */
if (G_UNLIKELY (src->eos))
goto eos;
/* Create the buffer. */
ret = gst_pad_alloc_buffer (GST_BASE_SRC_PAD (basesrc),
basesrc->segment.last_stop, basesrc->blocksize,
src->icy_caps ? src->icy_caps :
GST_PAD_CAPS (GST_BASE_SRC_PAD (basesrc)), outbuf);
if (G_UNLIKELY (ret != GST_FLOW_OK))
goto done;
read = gst_neonhttp_src_request_dispatch (src, *outbuf);
if (G_UNLIKELY (read < 0))
goto read_error;
GST_LOG_OBJECT (src, "returning %u bytes", GST_BUFFER_SIZE (*outbuf));
done:
return ret;
/* ERRORS */
eos:
{
GST_DEBUG_OBJECT (src, "EOS reached");
return GST_FLOW_UNEXPECTED;
}
read_error:
{
GST_ELEMENT_ERROR (src, RESOURCE, READ,
(NULL), ("Could not read any bytes (%i, %s)", read,
ne_get_error (src->session)));
gst_buffer_unref (*outbuf);
*outbuf = NULL;
return GST_FLOW_ERROR;
}
}
static GstCaps *
gst_data_uri_src_get_caps (GstBaseSrc * basesrc, GstCaps * filter)
{
GstDataURISrc *src = GST_DATA_URI_SRC (basesrc);
GstCaps *caps;
GST_OBJECT_LOCK (src);
if (gst_pad_has_current_caps (GST_BASE_SRC_PAD (basesrc)))
caps = gst_pad_get_current_caps (GST_BASE_SRC_PAD (basesrc));
else
caps = gst_caps_new_any ();
GST_OBJECT_UNLOCK (src);
return caps;
}
static void
gst_aravis_init (GstAravis *gst_aravis, GstAravisClass *g_class)
{
GstPad *pad = GST_BASE_SRC_PAD (gst_aravis);
gst_pad_set_fixatecaps_function (pad, gst_aravis_fixate_caps);
gst_base_src_set_live (GST_BASE_SRC (gst_aravis), TRUE);
gst_base_src_set_format (GST_BASE_SRC (gst_aravis), GST_FORMAT_TIME);
gst_aravis->camera_name = NULL;
gst_aravis->gain = -1;
gst_aravis->gain_auto = FALSE;
gst_aravis->exposure_time_us = -1;
gst_aravis->exposure_auto = FALSE;
gst_aravis->offset_x = 0;
gst_aravis->offset_y = 0;
gst_aravis->h_binning = -1;
gst_aravis->v_binning = -1;
gst_aravis->packet_resend = TRUE;
gst_aravis->payload = 0;
gst_aravis->buffer_timeout_us = GST_ARAVIS_BUFFER_TIMEOUT_DEFAULT;
gst_aravis->camera = NULL;
gst_aravis->stream = NULL;
gst_aravis->all_caps = NULL;
gst_aravis->fixed_caps = NULL;
}
static void
gst_multi_file_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
switch (prop_id) {
case ARG_LOCATION:
gst_multi_file_src_set_location (src, g_value_get_string (value));
break;
case ARG_INDEX:
src->index = g_value_get_int (value);
break;
case ARG_CAPS:
{
const GstCaps *caps = gst_value_get_caps (value);
GstCaps *new_caps;
if (caps == NULL) {
new_caps = gst_caps_new_any ();
} else {
new_caps = gst_caps_copy (caps);
}
gst_caps_replace (&src->caps, new_caps);
gst_pad_set_caps (GST_BASE_SRC_PAD (src), new_caps);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_audio_test_src_init (GstAudioTestSrc * src, GstAudioTestSrcClass * g_class)
{
GstPad *pad = GST_BASE_SRC_PAD (src);
gst_pad_set_fixatecaps_function (pad, gst_audio_test_src_src_fixate);
src->samplerate = 44100;
src->format = GST_AUDIO_TEST_SRC_FORMAT_NONE;
src->volume = DEFAULT_VOLUME;
src->freq = DEFAULT_FREQ;
/* we operate in time */
gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
gst_base_src_set_live (GST_BASE_SRC (src), DEFAULT_IS_LIVE);
src->samples_per_buffer = DEFAULT_SAMPLES_PER_BUFFER;
src->generate_samples_per_buffer = src->samples_per_buffer;
src->timestamp_offset = DEFAULT_TIMESTAMP_OFFSET;
src->can_activate_pull = DEFAULT_CAN_ACTIVATE_PULL;
src->gen = NULL;
src->wave = DEFAULT_WAVE;
gst_base_src_set_blocksize (GST_BASE_SRC (src), -1);
}
static GstCaps *
gst_v4l2src_get_caps (GstBaseSrc * src)
{
GstV4l2Src *v4l2src = GST_V4L2SRC (src);
GstCaps *ret;
GSList *walk;
GSList *formats;
if (!GST_V4L2_IS_OPEN (v4l2src->v4l2object)) {
/* FIXME: copy? */
return
gst_caps_copy (gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD
(v4l2src)));
}
if (v4l2src->probed_caps)
return gst_caps_ref (v4l2src->probed_caps);
formats = gst_v4l2_object_get_format_list (v4l2src->v4l2object);
ret = gst_caps_new_empty ();
for (walk = formats; walk; walk = walk->next) {
struct v4l2_fmtdesc *format;
GstStructure *template;
static void
gst_dv1394src_init (GstDV1394Src * dv1394src, GstDV1394SrcClass * klass)
{
GstPad *srcpad = GST_BASE_SRC_PAD (dv1394src);
gst_base_src_set_live (GST_BASE_SRC (dv1394src), TRUE);
gst_base_src_set_format (GST_BASE_SRC (dv1394src), GST_FORMAT_TIME);
gst_base_src_set_do_timestamp (GST_BASE_SRC (dv1394src), TRUE);
gst_pad_use_fixed_caps (srcpad);
dv1394src->port = DEFAULT_PORT;
dv1394src->channel = DEFAULT_CHANNEL;
dv1394src->consecutive = DEFAULT_CONSECUTIVE;
dv1394src->skip = DEFAULT_SKIP;
dv1394src->drop_incomplete = DEFAULT_DROP_INCOMPLETE;
dv1394src->use_avc = DEFAULT_USE_AVC;
dv1394src->guid = DEFAULT_GUID;
dv1394src->uri = g_strdup_printf ("dv://%d", dv1394src->port);
dv1394src->device_name = g_strdup_printf ("Default");
READ_SOCKET (dv1394src) = -1;
WRITE_SOCKET (dv1394src) = -1;
/* initialized when first header received */
dv1394src->frame_size = 0;
dv1394src->buf = NULL;
dv1394src->frame = NULL;
dv1394src->frame_sequence = 0;
dv1394src->provided_clock = gst_1394_clock_new ("dv1394clock");
}
static GstCaps *
gst_v4l2src_get_caps (GstBaseSrc * src, GstCaps * filter)
{
GstV4l2Src *v4l2src;
GstV4l2Object *obj;
GstCaps *ret;
GSList *walk;
GSList *formats;
v4l2src = GST_V4L2SRC (src);
obj = v4l2src->v4l2object;
if (!GST_V4L2_IS_OPEN (obj)) {
return gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (v4l2src));
}
if (v4l2src->probed_caps)
return gst_caps_ref (v4l2src->probed_caps);
formats = gst_v4l2_object_get_format_list (obj);
ret = gst_caps_new_empty ();
for (walk = formats; walk; walk = walk->next) {
struct v4l2_fmtdesc *format;
GstStructure *template;
static GstCaps *
gst_dshowvideosrc_get_caps (GstBaseSrc * basesrc, GstCaps * filter)
{
GstDshowVideoSrc *src = GST_DSHOWVIDEOSRC (basesrc);
GstCaps *caps;
if (src->caps) {
caps = gst_caps_ref (src->caps);
} else {
caps = gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (src));
}
if (caps) {
GstCaps *filtcaps;
if (filter) {
filtcaps = gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
} else {
filtcaps = gst_caps_ref (caps);
}
gst_caps_unref (caps);
return filtcaps;
}
return NULL;
}
static void
gst_multi_file_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstMultiFileSrc *src = GST_MULTI_FILE_SRC (object);
switch (prop_id) {
case PROP_LOCATION:
gst_multi_file_src_set_location (src, g_value_get_string (value));
break;
case PROP_INDEX:
GST_OBJECT_LOCK (src);
/* index was really meant to be read-only, but for backwards-compatibility
* we set start_index to make it work as it used to */
if (!GST_OBJECT_FLAG_IS_SET (src, GST_BASE_SRC_FLAG_STARTED))
src->start_index = g_value_get_int (value);
else
src->index = g_value_get_int (value);
GST_OBJECT_UNLOCK (src);
break;
case PROP_START_INDEX:
src->start_index = g_value_get_int (value);
break;
case PROP_STOP_INDEX:
src->stop_index = g_value_get_int (value);
break;
case PROP_CAPS:
{
GstStructure *st = NULL;
const GstCaps *caps = gst_value_get_caps (value);
GstCaps *new_caps;
if (caps == NULL) {
new_caps = gst_caps_new_any ();
} else {
new_caps = gst_caps_copy (caps);
}
gst_caps_replace (&src->caps, new_caps);
gst_pad_set_caps (GST_BASE_SRC_PAD (src), new_caps);
if (new_caps && gst_caps_get_size (new_caps) == 1 &&
(st = gst_caps_get_structure (new_caps, 0))
&& gst_structure_get_fraction (st, "framerate", &src->fps_n,
&src->fps_d)) {
GST_INFO_OBJECT (src, "Seting framerate to %d/%d", src->fps_n,
src->fps_d);
} else {
src->fps_n = -1;
src->fps_d = -1;
}
}
break;
case PROP_LOOP:
src->loop = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstCaps *
gst_genicamsrc_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
{
GstGenicamSrc *src = GST_GENICAM_SRC (bsrc);
GstCaps *caps;
if (src->hDS == NULL) {
caps = gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (src));
} else {
caps = gst_caps_copy (src->caps);
}
GST_DEBUG_OBJECT (src, "The caps before filtering are %" GST_PTR_FORMAT,
caps);
if (filter && caps) {
GstCaps *tmp = gst_caps_intersect (caps, filter);
gst_caps_unref (caps);
caps = tmp;
}
GST_DEBUG_OBJECT (src, "The caps after filtering are %" GST_PTR_FORMAT, caps);
return caps;
}
static GstFlowReturn
gst_dc1394_create (GstPushSrc * psrc, GstBuffer ** buffer)
{
GstDc1394 *src;
GstBuffer *outbuf;
GstCaps *caps;
dc1394video_frame_t *frame[1];
GstFlowReturn res = GST_FLOW_OK;
dc1394error_t err;
src = GST_DC1394 (psrc);
err = dc1394_capture_dequeue (src->camera, DC1394_CAPTURE_POLICY_WAIT, frame);
if (err != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
("failed to dequeue frame"), ("failed to dequeue frame"));
goto error;
}
outbuf = gst_buffer_new_and_alloc (frame[0]->image_bytes);
memcpy (GST_BUFFER_MALLOCDATA (outbuf), (guchar *) frame[0]->image,
frame[0]->image_bytes * sizeof (guchar));
GST_BUFFER_DATA (outbuf) = GST_BUFFER_MALLOCDATA (outbuf);
caps = gst_pad_get_caps (GST_BASE_SRC_PAD (psrc));
gst_buffer_set_caps (outbuf, caps);
gst_caps_unref (caps);
GST_BUFFER_TIMESTAMP (outbuf) = src->timestamp_offset + src->running_time;
if (src->rate_numerator != 0) {
GST_BUFFER_DURATION (outbuf) = gst_util_uint64_scale_int (GST_SECOND,
src->rate_denominator, src->rate_numerator);
}
src->n_frames++;
if (src->rate_numerator != 0) {
src->running_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
src->rate_denominator, src->rate_numerator);
}
if (dc1394_capture_enqueue (src->camera, frame[0]) != DC1394_SUCCESS) {
GST_ELEMENT_ERROR (src, RESOURCE, FAILED, ("failed to enqueue frame"),
("failed to enqueue frame"));
goto error;
}
*buffer = outbuf;
return res;
error:
{
return GST_FLOW_ERROR;
}
}
static gboolean
gst_dshowvideosrc_push_buffer (guint8 * buffer, guint size, gpointer src_object,
GstClockTime duration)
{
GstDshowVideoSrc *src = GST_DSHOWVIDEOSRC (src_object);
GstBuffer *buf = NULL;
IPin *pPin = NULL;
HRESULT hres = S_FALSE;
AM_MEDIA_TYPE *pMediaType = NULL;
if (!buffer || size == 0 || !src) {
return FALSE;
}
/* create a new buffer assign to it the clock time as timestamp */
buf = gst_buffer_new_and_alloc (size);
GST_BUFFER_SIZE (buf) = size;
GstClock *clock = gst_element_get_clock (GST_ELEMENT (src));
GST_BUFFER_TIMESTAMP (buf) =
GST_CLOCK_DIFF (gst_element_get_base_time (GST_ELEMENT (src)), gst_clock_get_time (clock));
gst_object_unref (clock);
GST_BUFFER_DURATION (buf) = duration;
if (src->is_rgb) {
/* FOR RGB directshow decoder will return bottom-up BITMAP
* There is probably a way to get top-bottom video frames from
* the decoder...
*/
gint line = 0;
gint stride = size / src->height;
for (; line < src->height; line++) {
memcpy (GST_BUFFER_DATA (buf) + (line * stride),
buffer + (size - ((line + 1) * (stride))), stride);
}
} else {
memcpy (GST_BUFFER_DATA (buf), buffer, size);
}
GST_DEBUG ("push_buffer => pts %" GST_TIME_FORMAT "duration %"
GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (duration));
/* the negotiate() method already set caps on the source pad */
gst_buffer_set_caps (buf, GST_PAD_CAPS (GST_BASE_SRC_PAD (src)));
g_mutex_lock (src->buffer_mutex);
if (src->buffer != NULL)
gst_buffer_unref (src->buffer);
src->buffer = buf;
g_cond_signal (src->buffer_cond);
g_mutex_unlock (src->buffer_mutex);
return TRUE;
}
static GstFlowReturn
gst_mms_create (GstPushSrc * psrc, GstBuffer ** buf)
{
GstMMS *mmssrc;
guint8 *data;
guint blocksize;
gint result;
mms_off_t offset;
*buf = NULL;
mmssrc = GST_MMS (psrc);
offset = mmsx_get_current_pos (mmssrc->connection);
/* Check if a seek perhaps has wrecked our connection */
if (offset == -1) {
GST_DEBUG_OBJECT (mmssrc,
"connection broken (probably an error during mmsx_seek_time during a convert query) returning FLOW_ERROR");
return GST_FLOW_ERROR;
}
/* Choose blocksize best for optimum performance */
if (offset == 0)
blocksize = mmsx_get_asf_header_len (mmssrc->connection);
else
blocksize = mmsx_get_asf_packet_len (mmssrc->connection);
*buf = gst_buffer_new_and_alloc (blocksize);
data = GST_BUFFER_DATA (*buf);
GST_BUFFER_SIZE (*buf) = 0;
GST_LOG_OBJECT (mmssrc, "reading %d bytes", blocksize);
result = mmsx_read (NULL, mmssrc->connection, (char *) data, blocksize);
/* EOS? */
if (result == 0)
goto eos;
GST_BUFFER_OFFSET (*buf) = offset;
GST_BUFFER_SIZE (*buf) = result;
GST_LOG_OBJECT (mmssrc, "Returning buffer with offset %" G_GINT64_FORMAT
" and size %u", GST_BUFFER_OFFSET (*buf), GST_BUFFER_SIZE (*buf));
gst_buffer_set_caps (*buf, GST_PAD_CAPS (GST_BASE_SRC_PAD (mmssrc)));
return GST_FLOW_OK;
eos:
{
GST_DEBUG_OBJECT (mmssrc, "EOS");
gst_buffer_unref (*buf);
*buf = NULL;
return GST_FLOW_UNEXPECTED;
}
}
static GstCaps *
gst_directsound_src_getcaps (GstBaseSrc * bsrc, GstCaps * filter)
{
GstCaps *caps = NULL;
GST_DEBUG_OBJECT (bsrc, "get caps");
caps = gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (bsrc));
return caps;
}
static GstFlowReturn
gst_osx_video_src_create (GstPushSrc * src, GstBuffer ** buf)
{
GstOSXVideoSrc *self = GST_OSX_VIDEO_SRC (src);
ComponentResult err;
GstCaps *caps;
//GstClock * clock;
// ###: we need to sleep between calls to SGIdle. originally, the sleeping
// was done using gst_clock_id_wait(), but it turns out that approach
// doesn't work well. it has two issues:
// 1) every so often, gst_clock_id_wait() will block for a much longer
// period of time than requested (upwards of a minute) causing video
// to freeze until it finally returns. this seems to happen once
// every few minutes, which probably means something like 1 in every
// several hundred calls gst_clock_id_wait() does the wrong thing.
// 2) even when the gst_clock approach is working properly, it uses
// quite a bit of cpu in comparison to a simple usleep(). on one
// test machine, using gst_clock_id_wait() caused osxvideosrc to use
// nearly 100% cpu, while using usleep() brough the usage to less
// than 10%.
//
// so, for now, we comment out the gst_clock stuff and use usleep.
//clock = gst_system_clock_obtain ();
do {
err = SGIdle (self->seq_grab);
if (err != noErr) {
GST_ERROR_OBJECT (self, "SGIdle returned %d", (int) err);
gst_object_unref (clock);
return GST_FLOW_UNEXPECTED;
}
if (self->buffer == NULL) {
/*GstClockID clock_id;
clock_id = gst_clock_new_single_shot_id (clock,
(GstClockTime) (gst_clock_get_time(clock) +
(GST_SECOND / ((float)FRAMERATE * 2))));
gst_clock_id_wait (clock_id, NULL);
gst_clock_id_unref (clock_id); */
usleep (1000000 / (FRAMERATE * 2));
}
} while (self->buffer == NULL);
//gst_object_unref (clock);
*buf = self->buffer;
self->buffer = NULL;
caps = gst_pad_get_caps (GST_BASE_SRC_PAD (src));
gst_buffer_set_caps (*buf, caps);
gst_caps_unref (caps);
return GST_FLOW_OK;
}
static GstFlowReturn
oob_source_create (GstPushSrc * src, GstBuffer ** p_buf)
{
*p_buf = gst_buffer_new ();
gst_pad_push_event (GST_BASE_SRC_PAD (src),
gst_event_new_custom (GST_EVENT_CUSTOM_DOWNSTREAM_OOB, NULL));
return GST_FLOW_OK;
}
static GstCaps *
gst_decklink_audio_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
{
GstCaps *caps;
// We don't support renegotiation
caps = gst_pad_get_current_caps (GST_BASE_SRC_PAD (bsrc));
if (!caps)
caps = gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (bsrc));
if (filter) {
GstCaps *tmp =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = tmp;
}
return caps;
}
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 GstFlowReturn
gst_mms_create (GstPushSrc * psrc, GstBuffer ** buf)
{
GstMMS *mmssrc;
guint8 *data;
guint blocksize;
gint result;
mmssrc = GST_MMS (psrc);
GST_OBJECT_LOCK (mmssrc);
blocksize = GST_BASE_SRC (mmssrc)->blocksize;
GST_OBJECT_UNLOCK (mmssrc);
*buf = gst_buffer_new_and_alloc (blocksize);
data = GST_BUFFER_DATA (*buf);
GST_BUFFER_SIZE (*buf) = 0;
GST_LOG_OBJECT (mmssrc, "reading %d bytes", blocksize);
if (mmssrc->connection) {
result = mms_read (NULL, mmssrc->connection, (char *) data, blocksize);
} else {
result = mmsh_read (NULL, mmssrc->connection_h, (char *) data, blocksize);
}
/* EOS? */
if (result == 0)
goto eos;
if (mmssrc->connection) {
GST_BUFFER_OFFSET (*buf) =
mms_get_current_pos (mmssrc->connection) - result;
} else {
GST_BUFFER_OFFSET (*buf) =
mmsh_get_current_pos (mmssrc->connection_h) - result;
}
GST_BUFFER_SIZE (*buf) = result;
GST_LOG_OBJECT (mmssrc, "Returning buffer with offset %" G_GINT64_FORMAT
" and size %u", GST_BUFFER_OFFSET (*buf), GST_BUFFER_SIZE (*buf));
gst_buffer_set_caps (*buf, GST_PAD_CAPS (GST_BASE_SRC_PAD (mmssrc)));
return GST_FLOW_OK;
eos:
{
GST_DEBUG_OBJECT (mmssrc, "EOS");
gst_buffer_unref (*buf);
*buf = NULL;
return GST_FLOW_UNEXPECTED;
}
}
static GstCaps *
gst_openal_src_getcaps (GstBaseSrc * basesrc, GstCaps * filter)
{
GstOpenalSrc *openalsrc = GST_OPENAL_SRC (basesrc);
GstCaps *caps;
ALCdevice *device;
device = alcOpenDevice (NULL);
if (device == NULL) {
GstPad *pad = GST_BASE_SRC_PAD (basesrc);
GstCaps *tcaps = gst_pad_get_pad_template_caps (pad);
GST_ELEMENT_WARNING (openalsrc, RESOURCE, OPEN_WRITE,
("Could not open temporary device."), GST_ALC_ERROR (device));
caps = gst_caps_copy (tcaps);
gst_caps_unref (tcaps);
} else if (openalsrc->probed_caps)
caps = gst_caps_copy (openalsrc->probed_caps);
else {
ALCcontext *context = alcCreateContext (device, NULL);
if (context) {
caps = gst_openal_helper_probe_caps (context);
alcDestroyContext (context);
} else {
GST_ELEMENT_WARNING (openalsrc, RESOURCE, FAILED,
("Could not create temporary context."), GST_ALC_ERROR (device));
caps = NULL;
}
if (caps && !gst_caps_is_empty (caps))
openalsrc->probed_caps = gst_caps_copy (caps);
}
if (device != NULL) {
if (alcCloseDevice (device) == ALC_FALSE) {
GST_ELEMENT_WARNING (openalsrc, RESOURCE, CLOSE,
("Could not close temporary device."), GST_ALC_ERROR (device));
}
}
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
return intersection;
} else {
return caps;
}
}
static GstBuffer *
gst_ks_video_src_alloc_buffer (guint size, guint alignment, gpointer user_data)
{
GstKsVideoSrc *self = GST_KS_VIDEO_SRC (user_data);
GstBuffer *buf;
GstCaps *caps;
GstFlowReturn flow_ret;
caps = gst_pad_get_negotiated_caps (GST_BASE_SRC_PAD (self));
if (caps == NULL)
goto error_no_caps;
flow_ret = gst_pad_alloc_buffer (GST_BASE_SRC_PAD (self), 0,
size + (alignment - 1), caps, &buf);
gst_caps_unref (caps);
if (G_UNLIKELY (flow_ret != GST_FLOW_OK))
goto error_alloc_buffer;
GST_BUFFER_DATA (buf) =
GSIZE_TO_POINTER ((GPOINTER_TO_SIZE (GST_BUFFER_DATA (buf)) + (alignment -
1)) & ~(alignment - 1));
GST_BUFFER_SIZE (buf) = size;
return buf;
error_no_caps:
{
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
("not negotiated"), ("maybe setcaps failed?"));
return NULL;
}
error_alloc_buffer:
{
GST_ELEMENT_ERROR (self, CORE, PAD, ("alloc_buffer failed"), (NULL));
return NULL;
}
}
static gboolean
gst_v4l2src_event (GstBaseSrc * src, GstEvent * event)
{
GST_DEBUG_OBJECT (src, "handle event %" GST_PTR_FORMAT, event);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_RECONFIGURE:
gst_pad_check_reconfigure (GST_BASE_SRC_PAD (src));
break;
default:
break;
}
return GST_BASE_SRC_CLASS (parent_class)->event (src, event);
}
static GstCaps *
gst_openni2_src_get_caps (GstBaseSrc * src, GstCaps * filter)
{
GstOpenni2Src *ni2src;
GstCaps *caps;
GstVideoInfo info;
GstVideoFormat format;
ni2src = GST_OPENNI2_SRC (src);
GST_OBJECT_LOCK (ni2src);
if (ni2src->gst_caps)
goto out;
// If we are here, we need to compose the caps and return them.
if (ni2src->depth->isValid () && ni2src->color->isValid () &&
ni2src->sourcetype == SOURCETYPE_BOTH
&& ni2src->colorpixfmt == openni::PIXEL_FORMAT_RGB888) {
format = GST_VIDEO_FORMAT_RGBA;
} else if (ni2src->depth->isValid () &&
ni2src->sourcetype == SOURCETYPE_DEPTH) {
format = GST_VIDEO_FORMAT_GRAY16_LE;
} else if (ni2src->color->isValid () && ni2src->sourcetype == SOURCETYPE_COLOR
&& ni2src->colorpixfmt == openni::PIXEL_FORMAT_RGB888) {
format = GST_VIDEO_FORMAT_RGB;
} else {
goto out;
}
gst_video_info_init (&info);
gst_video_info_set_format (&info, format, ni2src->width, ni2src->height);
info.fps_n = ni2src->fps;
info.fps_d = 1;
caps = gst_video_info_to_caps (&info);
GST_INFO_OBJECT (ni2src, "probed caps: %" GST_PTR_FORMAT, caps);
ni2src->gst_caps = caps;
out:
GST_OBJECT_UNLOCK (ni2src);
if (!ni2src->gst_caps)
return gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (ni2src));
return (filter)
? gst_caps_intersect_full (filter, ni2src->gst_caps,
GST_CAPS_INTERSECT_FIRST)
: gst_caps_ref (ni2src->gst_caps);
}
static SoupBuffer *
gst_soup_http_src_chunk_allocator (SoupMessage * msg, gsize max_len,
gpointer user_data)
{
GstSoupHTTPSrc *src = (GstSoupHTTPSrc *) user_data;
GstBaseSrc *basesrc = GST_BASE_SRC_CAST (src);
GstBuffer *gstbuf;
SoupBuffer *soupbuf;
gsize length;
GstFlowReturn rc;
if (max_len)
length = MIN (basesrc->blocksize, max_len);
else
length = basesrc->blocksize;
GST_DEBUG_OBJECT (src, "alloc %" G_GSIZE_FORMAT " bytes <= %" G_GSIZE_FORMAT,
length, max_len);
rc = gst_pad_alloc_buffer (GST_BASE_SRC_PAD (basesrc),
GST_BUFFER_OFFSET_NONE, length,
src->src_caps ? src->src_caps :
GST_PAD_CAPS (GST_BASE_SRC_PAD (basesrc)), &gstbuf);
if (G_UNLIKELY (rc != GST_FLOW_OK)) {
/* Failed to allocate buffer. Stall SoupSession and return error code
* to create(). */
src->ret = rc;
g_main_loop_quit (src->loop);
return NULL;
}
soupbuf = soup_buffer_new_with_owner (GST_BUFFER_DATA (gstbuf), length,
gstbuf, gst_soup_http_src_chunk_free);
return soupbuf;
}
static void
gst_video_test_src_init (GstVideoTestSrc * src, GstVideoTestSrcClass * g_class)
{
GstPad *pad = GST_BASE_SRC_PAD (src);
gst_pad_set_fixatecaps_function (pad, gst_video_test_src_src_fixate);
gst_video_test_src_set_pattern (src, GST_VIDEO_TEST_SRC_SMPTE);
src->timestamp_offset = 0;
/* we operate in time */
gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
}
