mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 05:38:58 +00:00
478 lines
14 KiB
C
478 lines
14 KiB
C
/* GStreamer
|
|
* Copyright (C) 2019 Seungha Yang <seungha.yang@navercorp.com>
|
|
* Copyright (C) 2020 Seungha Yang <seungha@centricular.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 St, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*/
|
|
|
|
/**
|
|
* SECTION:element-mfvideosrc
|
|
* @title: mfvideosrc
|
|
*
|
|
* Provides video capture from the Microsoft Media Foundation API.
|
|
*
|
|
* ## Example pipelines
|
|
* |[
|
|
* gst-launch-1.0 -v mfvideosrc ! fakesink
|
|
* ]| Capture from the default video capture device and render to fakesink.
|
|
*
|
|
* |[
|
|
* gst-launch-1.0 -v mfvideosrc device-index=1 ! fakesink
|
|
* ]| Capture from the second video device (if available) and render to fakesink.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstmfconfig.h"
|
|
|
|
#include "gstmfvideosrc.h"
|
|
#include "gstmfutils.h"
|
|
#include "gstmfsourceobject.h"
|
|
#include <string.h>
|
|
|
|
GST_DEBUG_CATEGORY (gst_mf_video_src_debug);
|
|
#define GST_CAT_DEFAULT gst_mf_video_src_debug
|
|
|
|
#if (GST_MF_WINAPI_APP && !GST_MF_WINAPI_DESKTOP)
|
|
/* FIXME: need support JPEG for UWP */
|
|
#define SRC_TEMPLATE_CAPS \
|
|
GST_VIDEO_CAPS_MAKE (GST_MF_VIDEO_FORMATS)
|
|
#else
|
|
#define SRC_TEMPLATE_CAPS \
|
|
GST_VIDEO_CAPS_MAKE (GST_MF_VIDEO_FORMATS) "; " \
|
|
"image/jpeg, width = " GST_VIDEO_SIZE_RANGE ", " \
|
|
"height = " GST_VIDEO_SIZE_RANGE ", " \
|
|
"framerate = " GST_VIDEO_FPS_RANGE
|
|
#endif
|
|
|
|
static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
|
|
GST_PAD_SRC,
|
|
GST_PAD_ALWAYS,
|
|
GST_STATIC_CAPS (SRC_TEMPLATE_CAPS));
|
|
|
|
struct _GstMFVideoSrc
|
|
{
|
|
GstPushSrc parent;
|
|
|
|
GstMFSourceObject *source;
|
|
gboolean started;
|
|
GstVideoInfo info;
|
|
|
|
guint64 n_frames;
|
|
GstClockTime latency;
|
|
|
|
/* properties */
|
|
gchar *device_path;
|
|
gchar *device_name;
|
|
gint device_index;
|
|
gpointer dispatcher;
|
|
};
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
PROP_DEVICE_PATH,
|
|
PROP_DEVICE_NAME,
|
|
PROP_DEVICE_INDEX,
|
|
PROP_DISPATCHER,
|
|
};
|
|
|
|
#define DEFAULT_DEVICE_PATH NULL
|
|
#define DEFAULT_DEVICE_NAME NULL
|
|
#define DEFAULT_DEVICE_INDEX -1
|
|
|
|
static void gst_mf_video_src_finalize (GObject * object);
|
|
static void gst_mf_video_src_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
static void gst_mf_video_src_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
|
|
static gboolean gst_mf_video_src_start (GstBaseSrc * src);
|
|
static gboolean gst_mf_video_src_stop (GstBaseSrc * src);
|
|
static gboolean gst_mf_video_src_set_caps (GstBaseSrc * src, GstCaps * caps);
|
|
static GstCaps *gst_mf_video_src_get_caps (GstBaseSrc * src, GstCaps * filter);
|
|
static GstCaps *gst_mf_video_src_fixate (GstBaseSrc * src, GstCaps * caps);
|
|
static gboolean gst_mf_video_src_unlock (GstBaseSrc * src);
|
|
static gboolean gst_mf_video_src_unlock_stop (GstBaseSrc * src);
|
|
static gboolean gst_mf_video_src_query (GstBaseSrc * src, GstQuery * query);
|
|
|
|
static GstFlowReturn gst_mf_video_src_create (GstPushSrc * pushsrc,
|
|
GstBuffer ** buffer);
|
|
|
|
#define gst_mf_video_src_parent_class parent_class
|
|
G_DEFINE_TYPE (GstMFVideoSrc, gst_mf_video_src, GST_TYPE_PUSH_SRC);
|
|
|
|
static void
|
|
gst_mf_video_src_class_init (GstMFVideoSrcClass * 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);
|
|
|
|
gobject_class->finalize = gst_mf_video_src_finalize;
|
|
gobject_class->get_property = gst_mf_video_src_get_property;
|
|
gobject_class->set_property = gst_mf_video_src_set_property;
|
|
|
|
g_object_class_install_property (gobject_class, PROP_DEVICE_PATH,
|
|
g_param_spec_string ("device-path", "Device Path",
|
|
"The device path", DEFAULT_DEVICE_PATH,
|
|
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
|
|
G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
|
|
g_param_spec_string ("device-name", "Device Name",
|
|
"The human-readable device name", DEFAULT_DEVICE_NAME,
|
|
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
|
|
G_PARAM_STATIC_STRINGS));
|
|
g_object_class_install_property (gobject_class, PROP_DEVICE_INDEX,
|
|
g_param_spec_int ("device-index", "Device Index",
|
|
"The zero-based device index", -1, G_MAXINT, DEFAULT_DEVICE_INDEX,
|
|
G_PARAM_READWRITE | GST_PARAM_MUTABLE_READY |
|
|
G_PARAM_STATIC_STRINGS));
|
|
#if GST_MF_WINAPI_APP
|
|
/**
|
|
* GstMFVideoSrc:dispatcher:
|
|
*
|
|
* ICoreDispatcher COM object used for activating device from UI thread.
|
|
*
|
|
* Since: 1.18
|
|
*/
|
|
g_object_class_install_property (gobject_class, PROP_DISPATCHER,
|
|
g_param_spec_pointer ("dispatcher", "Dispatcher",
|
|
"ICoreDispatcher COM object to use. In order for application to ask "
|
|
"permission of capture device, device activation should be running "
|
|
"on UI thread via ICoreDispatcher. This element will increase "
|
|
"the reference count of given ICoreDispatcher and release it after "
|
|
"use. Therefore, caller does not need to consider additional "
|
|
"reference count management",
|
|
GST_PARAM_CONDITIONALLY_AVAILABLE | GST_PARAM_MUTABLE_READY |
|
|
G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
|
|
#endif
|
|
|
|
gst_element_class_set_static_metadata (element_class,
|
|
"Media Foundation Video Source",
|
|
"Source/Video/Hardware",
|
|
"Capture video stream through Windows Media Foundation",
|
|
"Seungha Yang <seungha.yang@navercorp.com>");
|
|
|
|
gst_element_class_add_static_pad_template (element_class, &src_template);
|
|
|
|
basesrc_class->start = GST_DEBUG_FUNCPTR (gst_mf_video_src_start);
|
|
basesrc_class->stop = GST_DEBUG_FUNCPTR (gst_mf_video_src_stop);
|
|
basesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_mf_video_src_set_caps);
|
|
basesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_mf_video_src_get_caps);
|
|
basesrc_class->fixate = GST_DEBUG_FUNCPTR (gst_mf_video_src_fixate);
|
|
basesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_mf_video_src_unlock);
|
|
basesrc_class->unlock_stop = GST_DEBUG_FUNCPTR (gst_mf_video_src_unlock_stop);
|
|
basesrc_class->query = GST_DEBUG_FUNCPTR (gst_mf_video_src_query);
|
|
|
|
pushsrc_class->create = GST_DEBUG_FUNCPTR (gst_mf_video_src_create);
|
|
|
|
GST_DEBUG_CATEGORY_INIT (gst_mf_video_src_debug, "mfvideosrc", 0,
|
|
"mfvideosrc");
|
|
}
|
|
|
|
static void
|
|
gst_mf_video_src_init (GstMFVideoSrc * self)
|
|
{
|
|
gst_base_src_set_format (GST_BASE_SRC (self), GST_FORMAT_TIME);
|
|
gst_base_src_set_live (GST_BASE_SRC (self), TRUE);
|
|
|
|
self->device_index = DEFAULT_DEVICE_INDEX;
|
|
}
|
|
|
|
static void
|
|
gst_mf_video_src_finalize (GObject * object)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (object);
|
|
|
|
g_free (self->device_name);
|
|
g_free (self->device_path);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
static void
|
|
gst_mf_video_src_get_property (GObject * object, guint prop_id, GValue * value,
|
|
GParamSpec * pspec)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_DEVICE_PATH:
|
|
g_value_set_string (value, self->device_path);
|
|
break;
|
|
case PROP_DEVICE_NAME:
|
|
g_value_set_string (value, self->device_name);
|
|
break;
|
|
case PROP_DEVICE_INDEX:
|
|
g_value_set_int (value, self->device_index);
|
|
break;
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_mf_video_src_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (object);
|
|
|
|
switch (prop_id) {
|
|
case PROP_DEVICE_PATH:
|
|
g_free (self->device_path);
|
|
self->device_path = g_value_dup_string (value);
|
|
break;
|
|
case PROP_DEVICE_NAME:
|
|
g_free (self->device_name);
|
|
self->device_name = g_value_dup_string (value);
|
|
break;
|
|
case PROP_DEVICE_INDEX:
|
|
self->device_index = g_value_get_int (value);
|
|
break;
|
|
#if GST_MF_WINAPI_APP
|
|
case PROP_DISPATCHER:
|
|
self->dispatcher = g_value_get_pointer (value);
|
|
break;
|
|
#endif
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
gst_mf_video_src_start (GstBaseSrc * src)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (src);
|
|
|
|
GST_DEBUG_OBJECT (self, "Start");
|
|
|
|
self->source = gst_mf_source_object_new (GST_MF_SOURCE_TYPE_VIDEO,
|
|
self->device_index, self->device_name, self->device_path, NULL);
|
|
|
|
self->n_frames = 0;
|
|
self->latency = 0;
|
|
|
|
if (!self->source) {
|
|
GST_ERROR_OBJECT (self, "Couldn't create capture object");
|
|
return FALSE;
|
|
}
|
|
|
|
gst_mf_source_object_set_client (self->source, GST_ELEMENT (self));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mf_video_src_stop (GstBaseSrc * src)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (src);
|
|
|
|
GST_DEBUG_OBJECT (self, "Stop");
|
|
|
|
if (self->source) {
|
|
gst_mf_source_object_stop (self->source);
|
|
gst_object_unref (self->source);
|
|
self->source = NULL;
|
|
}
|
|
|
|
self->started = FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mf_video_src_set_caps (GstBaseSrc * src, GstCaps * caps)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (src);
|
|
|
|
GST_DEBUG_OBJECT (self, "Set caps %" GST_PTR_FORMAT, caps);
|
|
|
|
if (!self->source) {
|
|
GST_ERROR_OBJECT (self, "No capture engine yet");
|
|
return FALSE;
|
|
}
|
|
|
|
if (!gst_mf_source_object_set_caps (self->source, caps)) {
|
|
GST_ERROR_OBJECT (self, "CaptureEngine couldn't accept caps");
|
|
return FALSE;
|
|
}
|
|
|
|
gst_video_info_from_caps (&self->info, caps);
|
|
if (GST_VIDEO_INFO_FORMAT (&self->info) != GST_VIDEO_FORMAT_ENCODED)
|
|
gst_base_src_set_blocksize (src, GST_VIDEO_INFO_SIZE (&self->info));
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_mf_video_src_get_caps (GstBaseSrc * src, GstCaps * filter)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (src);
|
|
GstCaps *caps = NULL;
|
|
|
|
if (self->source)
|
|
caps = gst_mf_source_object_get_caps (self->source);
|
|
|
|
if (!caps)
|
|
caps = gst_pad_get_pad_template_caps (GST_BASE_SRC_PAD (src));
|
|
|
|
if (filter) {
|
|
GstCaps *filtered =
|
|
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
|
|
gst_caps_unref (caps);
|
|
caps = filtered;
|
|
}
|
|
|
|
GST_DEBUG_OBJECT (self, "Returning caps %" GST_PTR_FORMAT, caps);
|
|
|
|
return caps;
|
|
}
|
|
|
|
static GstCaps *
|
|
gst_mf_video_src_fixate (GstBaseSrc * src, GstCaps * caps)
|
|
{
|
|
GstStructure *structure;
|
|
GstCaps *fixated_caps;
|
|
gint i;
|
|
|
|
fixated_caps = gst_caps_make_writable (caps);
|
|
|
|
for (i = 0; i < gst_caps_get_size (fixated_caps); ++i) {
|
|
structure = gst_caps_get_structure (fixated_caps, i);
|
|
gst_structure_fixate_field_nearest_int (structure, "width", G_MAXINT);
|
|
gst_structure_fixate_field_nearest_int (structure, "height", G_MAXINT);
|
|
gst_structure_fixate_field_nearest_fraction (structure, "framerate",
|
|
G_MAXINT, 1);
|
|
}
|
|
|
|
fixated_caps = gst_caps_fixate (fixated_caps);
|
|
|
|
return fixated_caps;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mf_video_src_unlock (GstBaseSrc * src)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (src);
|
|
|
|
if (self->source)
|
|
gst_mf_source_object_set_flushing (self->source, TRUE);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mf_video_src_unlock_stop (GstBaseSrc * src)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (src);
|
|
|
|
if (self->source)
|
|
gst_mf_source_object_set_flushing (self->source, FALSE);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_mf_video_src_query (GstBaseSrc * src, GstQuery * query)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (src);
|
|
|
|
switch (GST_QUERY_TYPE (query)) {
|
|
case GST_QUERY_LATENCY:
|
|
if (self->started) {
|
|
gst_query_set_latency (query, TRUE, 0, self->latency);
|
|
|
|
return TRUE;
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return GST_BASE_SRC_CLASS (parent_class)->query (src, query);
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_mf_video_src_create (GstPushSrc * pushsrc, GstBuffer ** buffer)
|
|
{
|
|
GstMFVideoSrc *self = GST_MF_VIDEO_SRC (pushsrc);
|
|
GstFlowReturn ret = GST_FLOW_OK;
|
|
GstBuffer *buf = NULL;
|
|
GstClock *clock;
|
|
GstClockTime running_time = GST_CLOCK_TIME_NONE;
|
|
GstClockTimeDiff diff;
|
|
|
|
if (!self->started) {
|
|
if (!gst_mf_source_object_start (self->source)) {
|
|
GST_ERROR_OBJECT (self, "Failed to start capture object");
|
|
|
|
return GST_FLOW_ERROR;
|
|
}
|
|
|
|
self->started = TRUE;
|
|
}
|
|
|
|
if (GST_VIDEO_INFO_FORMAT (&self->info) != GST_VIDEO_FORMAT_ENCODED) {
|
|
ret = GST_BASE_SRC_CLASS (parent_class)->alloc (GST_BASE_SRC (self), 0,
|
|
GST_VIDEO_INFO_SIZE (&self->info), &buf);
|
|
|
|
if (ret != GST_FLOW_OK)
|
|
return ret;
|
|
|
|
ret = gst_mf_source_object_fill (self->source, buf);
|
|
} else {
|
|
ret = gst_mf_source_object_create (self->source, &buf);
|
|
}
|
|
|
|
if (ret != GST_FLOW_OK)
|
|
return ret;
|
|
|
|
GST_BUFFER_OFFSET (buf) = self->n_frames;
|
|
GST_BUFFER_OFFSET_END (buf) = GST_BUFFER_OFFSET (buf) + 1;
|
|
self->n_frames++;
|
|
|
|
GST_LOG_OBJECT (self,
|
|
"Captured buffer timestamp %" GST_TIME_FORMAT ", duration %"
|
|
GST_TIME_FORMAT, GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
|
|
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
|
|
|
|
/* Update latency */
|
|
clock = gst_element_get_clock (GST_ELEMENT_CAST (self));
|
|
if (clock) {
|
|
GstClockTime now;
|
|
|
|
now = gst_clock_get_time (clock);
|
|
running_time = now - GST_ELEMENT_CAST (self)->base_time;
|
|
gst_object_unref (clock);
|
|
}
|
|
|
|
diff = GST_CLOCK_DIFF (GST_BUFFER_PTS (buf), running_time);
|
|
if (diff > self->latency) {
|
|
self->latency = (GstClockTime) diff;
|
|
GST_DEBUG_OBJECT (self, "Updated latency value %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (self->latency));
|
|
}
|
|
|
|
*buffer = buf;
|
|
|
|
return GST_FLOW_OK;
|
|
}
|