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gstreamer/sys/decklink/gstdecklinkvideosrc.cpp
Nirbheek Chauhan ca8c63080f decklink: Fix format specifier warnings in logging v2 
HRESULT is unsigned long on Windows, but the Decklink headers define
it to 'int' on Linux. Confusingly, the defines that talk about the
possible return values for it use long constants. The easy fix would
be to change the linux/LinuxCOM.h header, but that's copied from the
decklink SDK.

Change the logging to always upcast to unsigned long while printing
HRESULT for consistency across platforms.
2017-07-19 04:19:34 +05:30

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/* GStreamer
* Copyright (C) 2011 David Schleef <ds@entropywave.com>
* Copyright (C) 2014 Sebastian Dröge <sebastian@centricular.com>
* Copyright (C) 2015 Florian Langlois <florian.langlois@fr.thalesgroup.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
* Boston, MA 02110-1335, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdecklinkvideosrc.h"
#include <string.h>
GST_DEBUG_CATEGORY_STATIC (gst_decklink_video_src_debug);
#define GST_CAT_DEFAULT gst_decklink_video_src_debug
#define DEFAULT_MODE (GST_DECKLINK_MODE_AUTO)
#define DEFAULT_CONNECTION (GST_DECKLINK_CONNECTION_AUTO)
#define DEFAULT_BUFFER_SIZE (5)
#define DEFAULT_OUTPUT_STREAM_TIME (FALSE)
#define DEFAULT_SKIP_FIRST_TIME (0)
#define DEFAULT_DROP_NO_SIGNAL_FRAMES (FALSE)
enum
{
PROP_0,
PROP_MODE,
PROP_CONNECTION,
PROP_DEVICE_NUMBER,
PROP_BUFFER_SIZE,
PROP_VIDEO_FORMAT,
PROP_TIMECODE_FORMAT,
PROP_OUTPUT_STREAM_TIME,
PROP_SKIP_FIRST_TIME,
PROP_DROP_NO_SIGNAL_FRAMES,
PROP_SIGNAL
};
typedef struct
{
IDeckLinkVideoInputFrame *frame;
GstClockTime timestamp, duration;
GstClockTime stream_timestamp;
GstClockTime stream_duration;
GstDecklinkModeEnum mode;
BMDPixelFormat format;
GstVideoTimeCode *tc;
gboolean no_signal;
} CaptureFrame;
static void
capture_frame_clear (CaptureFrame * frame)
{
frame->frame->Release ();
if (frame->tc)
gst_video_time_code_free (frame->tc);
memset (frame, 0, sizeof (*frame));
}
typedef struct
{
IDeckLinkVideoInputFrame *frame;
IDeckLinkInput *input;
} VideoFrame;
static void
video_frame_free (void *data)
{
VideoFrame *frame = (VideoFrame *) data;
frame->frame->Release ();
frame->input->Release ();
g_free (frame);
}
static void gst_decklink_video_src_set_property (GObject * object,
guint property_id, const GValue * value, GParamSpec * pspec);
static void gst_decklink_video_src_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec);
static void gst_decklink_video_src_finalize (GObject * object);
static GstStateChangeReturn
gst_decklink_video_src_change_state (GstElement * element,
GstStateChange transition);
static gboolean gst_decklink_video_src_set_caps (GstBaseSrc * bsrc,
GstCaps * caps);
static GstCaps *gst_decklink_video_src_get_caps (GstBaseSrc * bsrc,
GstCaps * filter);
static gboolean gst_decklink_video_src_query (GstBaseSrc * bsrc,
GstQuery * query);
static gboolean gst_decklink_video_src_unlock (GstBaseSrc * bsrc);
static gboolean gst_decklink_video_src_unlock_stop (GstBaseSrc * bsrc);
static GstFlowReturn gst_decklink_video_src_create (GstPushSrc * psrc,
GstBuffer ** buffer);
static gboolean gst_decklink_video_src_open (GstDecklinkVideoSrc * self);
static gboolean gst_decklink_video_src_close (GstDecklinkVideoSrc * self);
static gboolean gst_decklink_video_src_stop (GstDecklinkVideoSrc * self);
static void gst_decklink_video_src_start_streams (GstElement * element);
#define parent_class gst_decklink_video_src_parent_class
G_DEFINE_TYPE (GstDecklinkVideoSrc, gst_decklink_video_src, GST_TYPE_PUSH_SRC);
static void
gst_decklink_video_src_class_init (GstDecklinkVideoSrcClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstBaseSrcClass *basesrc_class = GST_BASE_SRC_CLASS (klass);
GstPushSrcClass *pushsrc_class = GST_PUSH_SRC_CLASS (klass);
GstCaps *templ_caps;
gobject_class->set_property = gst_decklink_video_src_set_property;
gobject_class->get_property = gst_decklink_video_src_get_property;
gobject_class->finalize = gst_decklink_video_src_finalize;
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_decklink_video_src_change_state);
basesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_decklink_video_src_get_caps);
basesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_decklink_video_src_set_caps);
basesrc_class->query = GST_DEBUG_FUNCPTR (gst_decklink_video_src_query);
basesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_decklink_video_src_unlock);
basesrc_class->unlock_stop =
GST_DEBUG_FUNCPTR (gst_decklink_video_src_unlock_stop);
pushsrc_class->create = GST_DEBUG_FUNCPTR (gst_decklink_video_src_create);
g_object_class_install_property (gobject_class, PROP_MODE,
g_param_spec_enum ("mode", "Playback Mode",
"Video Mode to use for playback",
GST_TYPE_DECKLINK_MODE, DEFAULT_MODE,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
G_PARAM_CONSTRUCT)));
g_object_class_install_property (gobject_class, PROP_CONNECTION,
g_param_spec_enum ("connection", "Connection",
"Video input connection to use",
GST_TYPE_DECKLINK_CONNECTION, DEFAULT_CONNECTION,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
G_PARAM_CONSTRUCT)));
g_object_class_install_property (gobject_class, PROP_DEVICE_NUMBER,
g_param_spec_int ("device-number", "Device number",
"Output device instance to use", 0, G_MAXINT, 0,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
G_PARAM_CONSTRUCT)));
g_object_class_install_property (gobject_class, PROP_BUFFER_SIZE,
g_param_spec_uint ("buffer-size", "Buffer Size",
"Size of internal buffer in number of video frames", 1,
G_MAXINT, DEFAULT_BUFFER_SIZE,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_VIDEO_FORMAT,
g_param_spec_enum ("video-format", "Video format",
"Video format type to use for input (Only use auto for mode=auto)",
GST_TYPE_DECKLINK_VIDEO_FORMAT, GST_DECKLINK_VIDEO_FORMAT_AUTO,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
G_PARAM_CONSTRUCT)));
g_object_class_install_property (gobject_class, PROP_TIMECODE_FORMAT,
g_param_spec_enum ("timecode-format", "Timecode format",
"Timecode format type to use for input",
GST_TYPE_DECKLINK_TIMECODE_FORMAT,
GST_DECKLINK_TIMECODE_FORMAT_RP188ANY,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
G_PARAM_CONSTRUCT)));
g_object_class_install_property (gobject_class, PROP_OUTPUT_STREAM_TIME,
g_param_spec_boolean ("output-stream-time", "Output Stream Time",
"Output stream time directly instead of translating to pipeline clock",
DEFAULT_OUTPUT_STREAM_TIME,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_SKIP_FIRST_TIME,
g_param_spec_uint64 ("skip-first-time", "Skip First Time",
"Skip that much time of initial frames after starting", 0,
G_MAXUINT64, DEFAULT_SKIP_FIRST_TIME,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_DROP_NO_SIGNAL_FRAMES,
g_param_spec_boolean ("drop-no-signal-frames", "Drop No Signal Frames",
"Drop frames that are marked as having no input signal",
DEFAULT_DROP_NO_SIGNAL_FRAMES,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_SIGNAL,
g_param_spec_boolean ("signal", "Input signal available",
"True if there is a valid input signal available",
FALSE, (GParamFlags) (G_PARAM_READABLE | G_PARAM_STATIC_STRINGS)));
templ_caps = gst_decklink_mode_get_template_caps (TRUE);
gst_element_class_add_pad_template (element_class,
gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, templ_caps));
gst_caps_unref (templ_caps);
gst_element_class_set_static_metadata (element_class, "Decklink Video Source",
"Video/Src", "Decklink Source", "David Schleef <ds@entropywave.com>, "
"Sebastian Dröge <sebastian@centricular.com>");
GST_DEBUG_CATEGORY_INIT (gst_decklink_video_src_debug, "decklinkvideosrc",
0, "debug category for decklinkvideosrc element");
}
static void
gst_decklink_video_src_init (GstDecklinkVideoSrc * self)
{
self->mode = DEFAULT_MODE;
self->caps_mode = GST_DECKLINK_MODE_AUTO;
self->caps_format = bmdFormat8BitYUV;
self->connection = DEFAULT_CONNECTION;
self->device_number = 0;
self->buffer_size = DEFAULT_BUFFER_SIZE;
self->video_format = GST_DECKLINK_VIDEO_FORMAT_AUTO;
self->timecode_format = bmdTimecodeRP188Any;
self->no_signal = FALSE;
self->output_stream_time = DEFAULT_OUTPUT_STREAM_TIME;
self->skip_first_time = DEFAULT_SKIP_FIRST_TIME;
self->drop_no_signal_frames = DEFAULT_DROP_NO_SIGNAL_FRAMES;
self->window_size = 64;
self->times = g_new (GstClockTime, 4 * self->window_size);
self->times_temp = self->times + 2 * self->window_size;
self->window_fill = 0;
self->window_skip = 1;
self->window_skip_count = 0;
gst_base_src_set_live (GST_BASE_SRC (self), TRUE);
gst_base_src_set_format (GST_BASE_SRC (self), GST_FORMAT_TIME);
g_mutex_init (&self->lock);
g_cond_init (&self->cond);
self->current_frames =
gst_queue_array_new_for_struct (sizeof (CaptureFrame),
DEFAULT_BUFFER_SIZE);
}
void
gst_decklink_video_src_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (object);
switch (property_id) {
case PROP_MODE:
self->mode = (GstDecklinkModeEnum) g_value_get_enum (value);
/* setting the default value for caps_mode here: if mode==auto then we
* configure caps_mode from the caps, if mode!=auto we set caps_mode to
* the same value as the mode. so self->caps_mode is essentially
* self->mode with mode=auto filtered into whatever we got from the
* negotiation */
if (self->mode != GST_DECKLINK_MODE_AUTO)
self->caps_mode = self->mode;
break;
case PROP_CONNECTION:
self->connection = (GstDecklinkConnectionEnum) g_value_get_enum (value);
break;
case PROP_DEVICE_NUMBER:
self->device_number = g_value_get_int (value);
break;
case PROP_BUFFER_SIZE:
self->buffer_size = g_value_get_uint (value);
break;
case PROP_VIDEO_FORMAT:
self->video_format = (GstDecklinkVideoFormat) g_value_get_enum (value);
switch (self->video_format) {
case GST_DECKLINK_VIDEO_FORMAT_8BIT_YUV:
case GST_DECKLINK_VIDEO_FORMAT_10BIT_YUV:
case GST_DECKLINK_VIDEO_FORMAT_8BIT_ARGB:
case GST_DECKLINK_VIDEO_FORMAT_8BIT_BGRA:
self->caps_format =
gst_decklink_pixel_format_from_type (self->video_format);
case GST_DECKLINK_VIDEO_FORMAT_AUTO:
break;
default:
GST_ELEMENT_WARNING (GST_ELEMENT (self), CORE, NOT_IMPLEMENTED,
("Format %d not supported", self->video_format), (NULL));
break;
}
break;
case PROP_TIMECODE_FORMAT:
self->timecode_format =
gst_decklink_timecode_format_from_enum ((GstDecklinkTimecodeFormat)
g_value_get_enum (value));
break;
case PROP_OUTPUT_STREAM_TIME:
self->output_stream_time = g_value_get_boolean (value);
break;
case PROP_SKIP_FIRST_TIME:
self->skip_first_time = g_value_get_uint64 (value);
break;
case PROP_DROP_NO_SIGNAL_FRAMES:
self->drop_no_signal_frames = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_decklink_video_src_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (object);
switch (property_id) {
case PROP_MODE:
g_value_set_enum (value, self->mode);
break;
case PROP_CONNECTION:
g_value_set_enum (value, self->connection);
break;
case PROP_DEVICE_NUMBER:
g_value_set_int (value, self->device_number);
break;
case PROP_BUFFER_SIZE:
g_value_set_uint (value, self->buffer_size);
break;
case PROP_VIDEO_FORMAT:
g_value_set_enum (value, self->video_format);
break;
case PROP_TIMECODE_FORMAT:
g_value_set_enum (value,
gst_decklink_timecode_format_to_enum (self->timecode_format));
break;
case PROP_OUTPUT_STREAM_TIME:
g_value_set_boolean (value, self->output_stream_time);
break;
case PROP_SKIP_FIRST_TIME:
g_value_set_uint64 (value, self->skip_first_time);
break;
case PROP_DROP_NO_SIGNAL_FRAMES:
g_value_set_boolean (value, self->drop_no_signal_frames);
break;
case PROP_SIGNAL:
g_value_set_boolean (value, !self->no_signal);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_decklink_video_src_finalize (GObject * object)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (object);
g_free (self->times);
self->times = NULL;
g_mutex_clear (&self->lock);
g_cond_clear (&self->cond);
if (self->current_frames) {
while (gst_queue_array_get_length (self->current_frames) > 0) {
CaptureFrame *tmp = (CaptureFrame *)
gst_queue_array_pop_head_struct (self->current_frames);
capture_frame_clear (tmp);
}
gst_queue_array_free (self->current_frames);
self->current_frames = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_decklink_video_src_set_caps (GstBaseSrc * bsrc, GstCaps * caps)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
GstCaps *current_caps;
const GstDecklinkMode *mode;
BMDVideoInputFlags flags;
HRESULT ret;
BMDPixelFormat format;
GST_DEBUG_OBJECT (self, "Setting caps %" GST_PTR_FORMAT, caps);
if ((current_caps = gst_pad_get_current_caps (GST_BASE_SRC_PAD (bsrc)))) {
GST_DEBUG_OBJECT (self, "Pad already has caps %" GST_PTR_FORMAT, caps);
if (!gst_caps_is_equal (caps, current_caps)) {
GST_DEBUG_OBJECT (self, "New caps, reconfiguring");
gst_caps_unref (current_caps);
if (self->mode == GST_DECKLINK_MODE_AUTO) {
return TRUE;
} else {
return FALSE;
}
} else {
gst_caps_unref (current_caps);
return TRUE;
}
}
if (!gst_video_info_from_caps (&self->info, caps))
return FALSE;
if (self->input->config && self->connection != GST_DECKLINK_CONNECTION_AUTO) {
ret = self->input->config->SetInt (bmdDeckLinkConfigVideoInputConnection,
gst_decklink_get_connection (self->connection));
if (ret != S_OK) {
GST_ERROR_OBJECT (self,
"Failed to set configuration (input source): 0x%08lx",
(unsigned long) ret);
return FALSE;
}
if (self->connection == GST_DECKLINK_CONNECTION_COMPOSITE) {
ret = self->input->config->SetInt (bmdDeckLinkConfigAnalogVideoInputFlags,
bmdAnalogVideoFlagCompositeSetup75);
if (ret != S_OK) {
GST_ERROR_OBJECT (self,
"Failed to set configuration (composite setup): 0x%08lx",
(unsigned long) ret);
return FALSE;
}
}
}
flags = bmdVideoInputFlagDefault;
if (self->mode == GST_DECKLINK_MODE_AUTO) {
bool autoDetection = false;
if (self->input->attributes) {
ret =
self->input->
attributes->GetFlag (BMDDeckLinkSupportsInputFormatDetection,
&autoDetection);
if (ret != S_OK) {
GST_ERROR_OBJECT (self,
"Failed to get attribute (autodetection): 0x%08lx",
(unsigned long) ret);
return FALSE;
}
if (autoDetection)
flags |= bmdVideoInputEnableFormatDetection;
}
if (!autoDetection) {
GST_ERROR_OBJECT (self, "Failed to activate auto-detection");
return FALSE;
}
}
mode = gst_decklink_get_mode (self->mode);
g_assert (mode != NULL);
format = self->caps_format;
ret = self->input->input->EnableVideoInput (mode->mode, format, flags);
if (ret != S_OK) {
GST_WARNING_OBJECT (self, "Failed to enable video input: 0x%08lx",
(unsigned long) ret);
return FALSE;
}
g_mutex_lock (&self->input->lock);
self->input->mode = mode;
self->input->video_enabled = TRUE;
if (self->input->start_streams)
self->input->start_streams (self->input->videosrc);
g_mutex_unlock (&self->input->lock);
return TRUE;
}
static GstCaps *
gst_decklink_video_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
GstCaps *mode_caps, *caps;
BMDPixelFormat format;
GstDecklinkModeEnum mode;
g_mutex_lock (&self->lock);
mode = self->caps_mode;
format = self->caps_format;
g_mutex_unlock (&self->lock);
mode_caps = gst_decklink_mode_get_caps (mode, format, TRUE);
if (filter) {
caps =
gst_caps_intersect_full (filter, mode_caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (mode_caps);
} else {
caps = mode_caps;
}
return caps;
}
static void
gst_decklink_video_src_update_time_mapping (GstDecklinkVideoSrc * self,
GstClockTime capture_time, GstClockTime stream_time)
{
if (self->window_skip_count == 0) {
GstClockTime num, den, b, xbase;
gdouble r_squared;
self->times[2 * self->window_fill] = stream_time;
self->times[2 * self->window_fill + 1] = capture_time;
self->window_fill++;
self->window_skip_count++;
if (self->window_skip_count >= self->window_skip)
self->window_skip_count = 0;
if (self->window_fill >= self->window_size) {
guint fps =
((gdouble) self->info.fps_n + self->info.fps_d -
1) / ((gdouble) self->info.fps_d);
/* Start by updating first every frame, once full every second frame,
* etc. until we update once every 4 seconds */
if (self->window_skip < 4 * fps)
self->window_skip *= 2;
if (self->window_skip >= 4 * fps)
self->window_skip = 4 * fps;
self->window_fill = 0;
self->window_filled = TRUE;
}
/* First sample ever, create some basic mapping to start */
if (!self->window_filled && self->window_fill == 1) {
self->current_time_mapping.xbase = stream_time;
self->current_time_mapping.b = capture_time;
self->current_time_mapping.num = 1;
self->current_time_mapping.den = 1;
self->next_time_mapping_pending = FALSE;
}
/* Only bother calculating anything here once we had enough measurements,
* i.e. let's take the window size as a start */
if (self->window_filled &&
gst_calculate_linear_regression (self->times, self->times_temp,
self->window_size, &num, &den, &b, &xbase, &r_squared)) {
GST_DEBUG_OBJECT (self,
"Calculated new time mapping: pipeline time = %lf * (stream time - %"
G_GUINT64_FORMAT ") + %" G_GUINT64_FORMAT " (%lf)",
((gdouble) num) / ((gdouble) den), xbase, b, r_squared);
self->next_time_mapping.xbase = xbase;
self->next_time_mapping.b = b;
self->next_time_mapping.num = num;
self->next_time_mapping.den = den;
self->next_time_mapping_pending = TRUE;
}
} else {
self->window_skip_count++;
if (self->window_skip_count >= self->window_skip)
self->window_skip_count = 0;
}
if (self->next_time_mapping_pending) {
GstClockTime expected, new_calculated, diff, max_diff;
expected =
gst_clock_adjust_with_calibration (NULL, stream_time,
self->current_time_mapping.xbase, self->current_time_mapping.b,
self->current_time_mapping.num, self->current_time_mapping.den);
new_calculated =
gst_clock_adjust_with_calibration (NULL, stream_time,
self->next_time_mapping.xbase, self->next_time_mapping.b,
self->next_time_mapping.num, self->next_time_mapping.den);
if (new_calculated > expected)
diff = new_calculated - expected;
else
diff = expected - new_calculated;
/* At most 5% frame duration change per update */
max_diff =
gst_util_uint64_scale (GST_SECOND / 20, self->info.fps_d,
self->info.fps_n);
GST_DEBUG_OBJECT (self,
"New time mapping causes difference of %" GST_TIME_FORMAT,
GST_TIME_ARGS (diff));
GST_DEBUG_OBJECT (self, "Maximum allowed per frame %" GST_TIME_FORMAT,
GST_TIME_ARGS (max_diff));
if (diff > max_diff) {
/* adjust so that we move that much closer */
if (new_calculated > expected) {
self->current_time_mapping.b = expected + max_diff;
self->current_time_mapping.xbase = stream_time;
} else {
self->current_time_mapping.b = expected - max_diff;
self->current_time_mapping.xbase = stream_time;
}
} else {
self->current_time_mapping.xbase = self->next_time_mapping.xbase;
self->current_time_mapping.b = self->next_time_mapping.b;
self->current_time_mapping.num = self->next_time_mapping.num;
self->current_time_mapping.den = self->next_time_mapping.den;
self->next_time_mapping_pending = FALSE;
}
}
}
static void
gst_decklink_video_src_got_frame (GstElement * element,
IDeckLinkVideoInputFrame * frame, GstDecklinkModeEnum mode,
GstClockTime capture_time, GstClockTime stream_time,
GstClockTime stream_duration, IDeckLinkTimecode * dtc, gboolean no_signal)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (element);
GstClockTime timestamp, duration;
GST_LOG_OBJECT (self,
"Got video frame at %" GST_TIME_FORMAT " / %" GST_TIME_FORMAT " (%"
GST_TIME_FORMAT "), no signal: %d", GST_TIME_ARGS (capture_time),
GST_TIME_ARGS (stream_time), GST_TIME_ARGS (stream_duration), no_signal);
if (self->drop_no_signal_frames && no_signal)
return;
g_mutex_lock (&self->lock);
if (self->first_time == GST_CLOCK_TIME_NONE)
self->first_time = stream_time;
if (self->skip_first_time > 0
&& stream_time - self->first_time < self->skip_first_time) {
g_mutex_unlock (&self->lock);
GST_DEBUG_OBJECT (self,
"Skipping frame as requested: %" GST_TIME_FORMAT " < %" GST_TIME_FORMAT,
GST_TIME_ARGS (stream_time),
GST_TIME_ARGS (self->skip_first_time + self->first_time));
return;
}
gst_decklink_video_src_update_time_mapping (self, capture_time, stream_time);
if (self->output_stream_time) {
timestamp = stream_time;
duration = stream_duration;
} else {
timestamp =
gst_clock_adjust_with_calibration (NULL, stream_time,
self->current_time_mapping.xbase, self->current_time_mapping.b,
self->current_time_mapping.num, self->current_time_mapping.den);
duration =
gst_util_uint64_scale (stream_duration, self->current_time_mapping.num,
self->current_time_mapping.den);
}
GST_LOG_OBJECT (self,
"Converted times to %" GST_TIME_FORMAT " (%"
GST_TIME_FORMAT ")", GST_TIME_ARGS (timestamp), GST_TIME_ARGS (duration));
if (!self->flushing) {
CaptureFrame f;
const GstDecklinkMode *bmode;
GstVideoTimeCodeFlags flags = GST_VIDEO_TIME_CODE_FLAGS_NONE;
guint field_count = 0;
while (gst_queue_array_get_length (self->current_frames) >=
self->buffer_size) {
CaptureFrame *tmp = (CaptureFrame *)
gst_queue_array_pop_head_struct (self->current_frames);
GST_WARNING_OBJECT (self, "Dropping old frame at %" GST_TIME_FORMAT,
GST_TIME_ARGS (tmp->timestamp));
capture_frame_clear (tmp);
}
memset (&f, 0, sizeof (f));
f.frame = frame;
f.timestamp = timestamp;
f.duration = duration;
f.stream_timestamp = stream_time;
f.stream_duration = stream_duration;
f.mode = mode;
f.format = frame->GetPixelFormat ();
f.no_signal = no_signal;
if (dtc != NULL) {
uint8_t hours, minutes, seconds, frames;
BMDTimecodeFlags bflags;
HRESULT res;
res = dtc->GetComponents (&hours, &minutes, &seconds, &frames);
if (res != S_OK) {
GST_ERROR ("Could not get components for timecode %p: 0x%08lx", dtc,
(unsigned long) res);
f.tc = NULL;
} else {
bflags = dtc->GetFlags ();
GST_DEBUG_OBJECT (self, "Got timecode %02d:%02d:%02d:%02d",
hours, minutes, seconds, frames);
bmode = gst_decklink_get_mode (mode);
if (bmode->interlaced) {
flags =
(GstVideoTimeCodeFlags) (flags |
GST_VIDEO_TIME_CODE_FLAGS_INTERLACED);
if (bflags & bmdTimecodeFieldMark)
field_count = 2;
else
field_count = 1;
}
if (bflags & bmdTimecodeIsDropFrame)
flags =
(GstVideoTimeCodeFlags) (flags |
GST_VIDEO_TIME_CODE_FLAGS_DROP_FRAME);
f.tc =
gst_video_time_code_new (bmode->fps_n, bmode->fps_d, NULL, flags,
hours, minutes, seconds, frames, field_count);
}
dtc->Release ();
} else {
f.tc = NULL;
}
frame->AddRef ();
gst_queue_array_push_tail_struct (self->current_frames, &f);
g_cond_signal (&self->cond);
}
g_mutex_unlock (&self->lock);
}
static GstFlowReturn
gst_decklink_video_src_create (GstPushSrc * bsrc, GstBuffer ** buffer)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
GstFlowReturn flow_ret = GST_FLOW_OK;
const guint8 *data;
gsize data_size;
VideoFrame *vf;
CaptureFrame f;
GstCaps *caps;
gboolean caps_changed = FALSE;
const GstDecklinkMode *mode;
static GstStaticCaps stream_reference =
GST_STATIC_CAPS ("timestamp/x-decklink-stream");
g_mutex_lock (&self->lock);
while (gst_queue_array_is_empty (self->current_frames) && !self->flushing) {
g_cond_wait (&self->cond, &self->lock);
}
if (self->flushing) {
GST_DEBUG_OBJECT (self, "Flushing");
g_mutex_unlock (&self->lock);
return GST_FLOW_FLUSHING;
}
f = *(CaptureFrame *) gst_queue_array_pop_head_struct (self->current_frames);
g_mutex_unlock (&self->lock);
// If we're not flushing, we should have a valid frame from the queue
g_assert (f.frame != NULL);
g_mutex_lock (&self->lock);
if (self->caps_mode != f.mode) {
if (self->mode == GST_DECKLINK_MODE_AUTO) {
GST_DEBUG_OBJECT (self, "Mode changed from %d to %d", self->caps_mode,
f.mode);
caps_changed = TRUE;
self->caps_mode = f.mode;
} else {
g_mutex_unlock (&self->lock);
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
("Invalid mode in captured frame"),
("Mode set to %d but captured %d", self->caps_mode, f.mode));
capture_frame_clear (&f);
return GST_FLOW_NOT_NEGOTIATED;
}
}
if (self->caps_format != f.format) {
if (self->video_format == GST_DECKLINK_VIDEO_FORMAT_AUTO) {
GST_DEBUG_OBJECT (self, "Format changed from %d to %d", self->caps_format,
f.format);
caps_changed = TRUE;
self->caps_format = f.format;
} else {
g_mutex_unlock (&self->lock);
GST_ELEMENT_ERROR (self, CORE, NEGOTIATION,
("Invalid pixel format in captured frame"),
("Format set to %d but captured %d", self->caps_format, f.format));
capture_frame_clear (&f);
return GST_FLOW_NOT_NEGOTIATED;
}
}
g_mutex_unlock (&self->lock);
if (caps_changed) {
caps = gst_decklink_mode_get_caps (f.mode, f.format, TRUE);
gst_video_info_from_caps (&self->info, caps);
gst_base_src_set_caps (GST_BASE_SRC_CAST (bsrc), caps);
gst_element_post_message (GST_ELEMENT_CAST (self),
gst_message_new_latency (GST_OBJECT_CAST (self)));
gst_caps_unref (caps);
}
f.frame->GetBytes ((gpointer *) & data);
data_size = self->info.size;
vf = (VideoFrame *) g_malloc0 (sizeof (VideoFrame));
*buffer =
gst_buffer_new_wrapped_full ((GstMemoryFlags) GST_MEMORY_FLAG_READONLY,
(gpointer) data, data_size, 0, data_size, vf,
(GDestroyNotify) video_frame_free);
vf->frame = f.frame;
f.frame->AddRef ();
vf->input = self->input->input;
vf->input->AddRef ();
if (f.no_signal) {
if (!self->no_signal) {
self->no_signal = TRUE;
g_object_notify (G_OBJECT (self), "signal");
GST_ELEMENT_WARNING (GST_ELEMENT (self), RESOURCE, READ, ("No signal"),
("No input source was detected - video frames invalid"));
}
} else {
if (self->no_signal) {
self->no_signal = FALSE;
g_object_notify (G_OBJECT (self), "signal");
GST_ELEMENT_INFO (GST_ELEMENT (self), RESOURCE, READ, ("Signal found"),
("Input source detected"));
}
}
if (f.no_signal)
GST_BUFFER_FLAG_SET (*buffer, GST_BUFFER_FLAG_GAP);
GST_BUFFER_TIMESTAMP (*buffer) = f.timestamp;
GST_BUFFER_DURATION (*buffer) = f.duration;
if (f.tc != NULL)
gst_buffer_add_video_time_code_meta (*buffer, f.tc);
gst_buffer_add_reference_timestamp_meta (*buffer,
gst_static_caps_get (&stream_reference), f.stream_timestamp,
f.stream_duration);
mode = gst_decklink_get_mode (self->mode);
if (mode->interlaced && mode->tff)
GST_BUFFER_FLAG_SET (*buffer,
GST_VIDEO_BUFFER_FLAG_TFF | GST_VIDEO_BUFFER_FLAG_INTERLACED);
GST_DEBUG_OBJECT (self,
"Outputting buffer %p with timestamp %" GST_TIME_FORMAT " and duration %"
GST_TIME_FORMAT, *buffer, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (*buffer)),
GST_TIME_ARGS (GST_BUFFER_DURATION (*buffer)));
capture_frame_clear (&f);
return flow_ret;
}
static gboolean
gst_decklink_video_src_query (GstBaseSrc * bsrc, GstQuery * query)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
gboolean ret = TRUE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_LATENCY:{
if (self->input) {
GstClockTime min, max;
const GstDecklinkMode *mode;
g_mutex_lock (&self->lock);
mode = gst_decklink_get_mode (self->caps_mode);
g_mutex_unlock (&self->lock);
min = gst_util_uint64_scale_ceil (GST_SECOND, mode->fps_d, mode->fps_n);
max = self->buffer_size * min;
gst_query_set_latency (query, TRUE, min, max);
ret = TRUE;
} else {
ret = FALSE;
}
break;
}
default:
ret = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
break;
}
return ret;
}
static gboolean
gst_decklink_video_src_unlock (GstBaseSrc * bsrc)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
g_mutex_lock (&self->lock);
self->flushing = TRUE;
g_cond_signal (&self->cond);
g_mutex_unlock (&self->lock);
return TRUE;
}
static gboolean
gst_decklink_video_src_unlock_stop (GstBaseSrc * bsrc)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (bsrc);
g_mutex_lock (&self->lock);
self->flushing = FALSE;
while (gst_queue_array_get_length (self->current_frames) > 0) {
CaptureFrame *tmp =
(CaptureFrame *) gst_queue_array_pop_head_struct (self->current_frames);
capture_frame_clear (tmp);
}
g_mutex_unlock (&self->lock);
return TRUE;
}
static gboolean
gst_decklink_video_src_open (GstDecklinkVideoSrc * self)
{
const GstDecklinkMode *mode;
GST_DEBUG_OBJECT (self, "Opening");
self->input =
gst_decklink_acquire_nth_input (self->device_number,
GST_ELEMENT_CAST (self), FALSE);
if (!self->input) {
GST_ERROR_OBJECT (self, "Failed to acquire input");
return FALSE;
}
mode = gst_decklink_get_mode (self->mode);
g_assert (mode != NULL);
g_mutex_lock (&self->input->lock);
self->input->mode = mode;
self->input->got_video_frame = gst_decklink_video_src_got_frame;
self->input->start_streams = gst_decklink_video_src_start_streams;
g_mutex_unlock (&self->input->lock);
return TRUE;
}
static gboolean
gst_decklink_video_src_close (GstDecklinkVideoSrc * self)
{
GST_DEBUG_OBJECT (self, "Closing");
if (self->input) {
g_mutex_lock (&self->input->lock);
self->input->got_video_frame = NULL;
self->input->mode = NULL;
self->input->video_enabled = FALSE;
self->input->start_streams = NULL;
g_mutex_unlock (&self->input->lock);
gst_decklink_release_nth_input (self->device_number,
GST_ELEMENT_CAST (self), FALSE);
self->input = NULL;
}
return TRUE;
}
static gboolean
gst_decklink_video_src_stop (GstDecklinkVideoSrc * self)
{
GST_DEBUG_OBJECT (self, "Stopping");
while (gst_queue_array_get_length (self->current_frames) > 0) {
CaptureFrame *tmp =
(CaptureFrame *) gst_queue_array_pop_head_struct (self->current_frames);
capture_frame_clear (tmp);
}
self->caps_mode = GST_DECKLINK_MODE_AUTO;
if (self->input && self->input->video_enabled) {
g_mutex_lock (&self->input->lock);
self->input->video_enabled = FALSE;
g_mutex_unlock (&self->input->lock);
self->input->input->DisableVideoInput ();
}
return TRUE;
}
static void
gst_decklink_video_src_start_streams (GstElement * element)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (element);
HRESULT res;
if (self->input->video_enabled && (!self->input->audiosrc
|| self->input->audio_enabled)
&& (GST_STATE (self) == GST_STATE_PLAYING
|| GST_STATE_PENDING (self) == GST_STATE_PLAYING)) {
GST_DEBUG_OBJECT (self, "Starting streams");
g_mutex_lock (&self->lock);
self->first_time = GST_CLOCK_TIME_NONE;
self->window_fill = 0;
self->window_filled = FALSE;
self->window_skip = 1;
self->window_skip_count = 0;
self->current_time_mapping.xbase = 0;
self->current_time_mapping.b = 0;
self->current_time_mapping.num = 1;
self->current_time_mapping.den = 1;
self->next_time_mapping.xbase = 0;
self->next_time_mapping.b = 0;
self->next_time_mapping.num = 1;
self->next_time_mapping.den = 1;
g_mutex_unlock (&self->lock);
res = self->input->input->StartStreams ();
if (res != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to start streams: 0x%08lx", (unsigned long) res));
return;
}
} else {
GST_DEBUG_OBJECT (self, "Not starting streams yet");
}
}
static GstStateChangeReturn
gst_decklink_video_src_change_state (GstElement * element,
GstStateChange transition)
{
GstDecklinkVideoSrc *self = GST_DECKLINK_VIDEO_SRC_CAST (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_decklink_video_src_open (self)) {
ret = GST_STATE_CHANGE_FAILURE;
goto out;
}
if (self->mode == GST_DECKLINK_MODE_AUTO &&
self->video_format != GST_DECKLINK_VIDEO_FORMAT_AUTO) {
GST_WARNING_OBJECT (self, "Warning: mode=auto and format!=auto may \
not work");
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
self->flushing = FALSE;
break;
default:
break;
}
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PAUSED_TO_READY:
self->no_signal = FALSE;
gst_decklink_video_src_stop (self);
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:{
HRESULT res;
GST_DEBUG_OBJECT (self, "Stopping streams");
res = self->input->input->StopStreams ();
if (res != S_OK) {
GST_ELEMENT_ERROR (self, STREAM, FAILED,
(NULL), ("Failed to stop streams: 0x%08lx", (unsigned long) res));
ret = GST_STATE_CHANGE_FAILURE;
}
break;
}
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:{
g_mutex_lock (&self->input->lock);
if (self->input->start_streams)
self->input->start_streams (self->input->videosrc);
g_mutex_unlock (&self->input->lock);
break;
}
case GST_STATE_CHANGE_READY_TO_NULL:
gst_decklink_video_src_close (self);
break;
default:
break;
}
out:
return ret;
}
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