add bitflowsrc, a source for BitFlow framegrabbers
This commit is contained in:
Joshua M. Doe
parent
e1ee20c4ad
commit
07473812c1
@ -22,6 +22,9 @@ macro_log_feature(GOBJECT_FOUND "GObject" "Required to build gst-plugins-vision"
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find_package(Orc REQUIRED)
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macro_log_feature(ORC_FOUND "Orc" "Required library to improve performance" "http://code.entropywave.com/orc/" TRUE)
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find_package(Bitflow)
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macro_log_feature(BITFLOW_FOUND "BitFlow" "Required to build BitFlow source element" "http://www.bitflow.com/" FALSE)
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find_package(NIIMAQ)
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macro_log_feature(NIIMAQ_FOUND "NI-IMAQ" "Required to build National Instruments IMAQ source element" "http://www.ni.com/" FALSE)
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42
cmake/modules/FindBitflow.cmake
Normal file
42
cmake/modules/FindBitflow.cmake
Normal file
@ -0,0 +1,42 @@
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# - Try to find Bitflow SDK
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# Once done this will define
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#
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# BITFLOW_FOUND - system has Bitflow SDK
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# BITFLOW_INCLUDE_DIR - the Bitflow SDK include directory
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# BITFLOW_LIBRARIES - the libraries needed to use Bitflow SDK
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# Copyright (c) 2006, Tim Beaulen <tbscope@gmail.com>
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# Copyright (c) 2016 outside US, United States Government, Joshua M. Doe <oss@nvl.army.mil>
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#
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# Redistribution and use is allowed according to the terms of the BSD license.
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# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
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if (NOT BITFLOW_DIR)
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set (BITFLOW_DIR "C:/BitFlow SDK 6.20" CACHE PATH "Directory containing Bitflow SDK includes and libraries")
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endif ()
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if (CMAKE_SIZEOF_VOID_P MATCHES "8")
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set(_LIB_PATH "${BITFLOW_DIR}/Lib64")
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else ()
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set(_LIB_PATH "${BITFLOW_DIR}/Lib32")
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endif ()
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find_path (BITFLOW_INCLUDE_DIR BiApi.h
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PATHS
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"${BITFLOW_DIR}/Include"
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DOC "Directory containing BiApi.h include file")
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find_library (_BidLib NAMES bid
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PATHS
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"${_LIB_PATH}")
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find_library (_BfdLib NAMES bfd
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PATHS
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"${_LIB_PATH}")
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set (BITFLOW_LIBRARIES ${_BidLib} ${_BfdLib})
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mark_as_advanced (_BidLib _BfdLib)
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include (FindPackageHandleStandardArgs)
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find_package_handle_standard_args (BITFLOW DEFAULT_MSG BITFLOW_INCLUDE_DIR BITFLOW_LIBRARIES)
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@ -1,3 +1,7 @@
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if (BITFLOW_FOUND)
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add_subdirectory(bitflow)
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endif (BITFLOW_FOUND)
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if (EDT_FOUND)
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add_subdirectory(edt)
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endif (EDT_FOUND)
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29
sys/bitflow/CMakeLists.txt
Normal file
29
sys/bitflow/CMakeLists.txt
Normal file
@ -0,0 +1,29 @@
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add_definitions (-DHAVE_CONFIG_H)
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set (SOURCES
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gstbitflowsrc.c)
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set (HEADERS
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gstbitflowsrc.h)
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include_directories (AFTER
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${BITFLOW_INCLUDE_DIR})
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set (libname libgstbitflow)
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add_library (${libname} MODULE
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${SOURCES}
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${HEADERS})
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target_link_libraries (${libname}
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${GLIB2_LIBRARIES}
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${GOBJECT_LIBRARIES}
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${GSTREAMER_LIBRARY}
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${GSTREAMER_BASE_LIBRARY}
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${GSTREAMER_VIDEO_LIBRARY}
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${BITFLOW_LIBRARIES})
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set (pdbfile "${CMAKE_CURRENT_BINARY_DIR}/\${CMAKE_INSTALL_CONFIG_NAME}/${libname}.pdb")
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install (FILES ${pdbfile} DESTINATION lib/gstreamer-1.0)
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install(TARGETS ${libname}
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LIBRARY DESTINATION lib/gstreamer-1.0)
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646
sys/bitflow/gstbitflowsrc.c
Normal file
646
sys/bitflow/gstbitflowsrc.c
Normal file
@ -0,0 +1,646 @@
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/* GStreamer
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* Copyright (C) 2011 FIXME <fixme@example.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Suite 500,
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* Boston, MA 02110-1335, USA.
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*/
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/**
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* SECTION:element-gstbitflowsrc
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*
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* The bitflowsrc element is a source for BitFlow framegrabbers.
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*
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* <refsect2>
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* <title>Example launch line</title>
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* |[
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* gst-launch -v bitflowsrc ! videoconvert ! autovideosink
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* ]|
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* Shows video from the default BitFlow framegrabber
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* </refsect2>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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#include <gst/base/gstpushsrc.h>
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#include <gst/video/video.h>
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#include "gstbitflowsrc.h"
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GST_DEBUG_CATEGORY_STATIC (gst_bitflowsrc_debug);
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#define GST_CAT_DEFAULT gst_bitflowsrc_debug
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/* prototypes */
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static void gst_bitflowsrc_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_bitflowsrc_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_bitflowsrc_dispose (GObject * object);
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static void gst_bitflowsrc_finalize (GObject * object);
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static gboolean gst_bitflowsrc_start (GstBaseSrc * src);
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static gboolean gst_bitflowsrc_stop (GstBaseSrc * src);
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static GstCaps *gst_bitflowsrc_get_caps (GstBaseSrc * src, GstCaps * filter);
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static gboolean gst_bitflowsrc_set_caps (GstBaseSrc * src, GstCaps * caps);
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static gboolean gst_bitflowsrc_unlock (GstBaseSrc * src);
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static gboolean gst_bitflowsrc_unlock_stop (GstBaseSrc * src);
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static GstFlowReturn gst_bitflowsrc_create (GstPushSrc * src, GstBuffer ** buf);
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static gchar *gst_bitflowsrc_get_error_string (GstBitflowSrc * src,
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BIRC error_num);
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enum
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{
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PROP_0,
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PROP_CAMERA_FILE,
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PROP_NUM_CAPTURE_BUFFERS,
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PROP_BOARD,
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PROP_TIMEOUT
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};
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#define DEFAULT_PROP_CAMERA_FILE ""
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#define DEFAULT_PROP_NUM_CAPTURE_BUFFERS 3
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#define DEFAULT_PROP_BOARD 0
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#define DEFAULT_PROP_TIMEOUT 1000
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/* pad templates */
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static GstStaticPadTemplate gst_bitflowsrc_src_template =
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GST_STATIC_PAD_TEMPLATE ("src",
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GST_PAD_SRC,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE
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("{ GRAY8, GRAY16_LE, GRAY16_BE, BGRA }"))
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);
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/* class initialization */
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G_DEFINE_TYPE (GstBitflowSrc, gst_bitflowsrc, GST_TYPE_PUSH_SRC);
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static void
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gst_bitflowsrc_class_init (GstBitflowSrcClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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GstBaseSrcClass *gstbasesrc_class = GST_BASE_SRC_CLASS (klass);
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GstPushSrcClass *gstpushsrc_class = GST_PUSH_SRC_CLASS (klass);
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gobject_class->set_property = gst_bitflowsrc_set_property;
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gobject_class->get_property = gst_bitflowsrc_get_property;
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gobject_class->dispose = gst_bitflowsrc_dispose;
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gobject_class->finalize = gst_bitflowsrc_finalize;
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gst_element_class_add_pad_template (gstelement_class,
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gst_static_pad_template_get (&gst_bitflowsrc_src_template));
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gst_element_class_set_static_metadata (gstelement_class,
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"BitFlow Video Source", "Source/Video",
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"BitFlow framegrabber video source", "Joshua M. Doe <oss@nvl.army.mil>");
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gstbasesrc_class->start = GST_DEBUG_FUNCPTR (gst_bitflowsrc_start);
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gstbasesrc_class->stop = GST_DEBUG_FUNCPTR (gst_bitflowsrc_stop);
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gstbasesrc_class->get_caps = GST_DEBUG_FUNCPTR (gst_bitflowsrc_get_caps);
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gstbasesrc_class->set_caps = GST_DEBUG_FUNCPTR (gst_bitflowsrc_set_caps);
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gstbasesrc_class->unlock = GST_DEBUG_FUNCPTR (gst_bitflowsrc_unlock);
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gstbasesrc_class->unlock_stop =
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GST_DEBUG_FUNCPTR (gst_bitflowsrc_unlock_stop);
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gstpushsrc_class->create = GST_DEBUG_FUNCPTR (gst_bitflowsrc_create);
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/* Install GObject properties */
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g_object_class_install_property (gobject_class, PROP_CAMERA_FILE,
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g_param_spec_string ("config-file", "Config file",
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"Filepath of the video file for the selected camera",
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DEFAULT_PROP_CAMERA_FILE,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS |
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GST_PARAM_MUTABLE_READY)));
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g_object_class_install_property (gobject_class, PROP_NUM_CAPTURE_BUFFERS,
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g_param_spec_uint ("num-capture-buffers", "Number of capture buffers",
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"Number of capture buffers", 1, G_MAXUINT,
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DEFAULT_PROP_NUM_CAPTURE_BUFFERS,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (gobject_class, PROP_BOARD,
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g_param_spec_uint ("board", "Board", "Board number", 0, 7,
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DEFAULT_PROP_BOARD,
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(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
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g_object_class_install_property (G_OBJECT_CLASS (klass),
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PROP_TIMEOUT, g_param_spec_int ("timeout",
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"Timeout (ms)",
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"Timeout in ms (0 to use default)", 0, G_MAXINT,
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DEFAULT_PROP_TIMEOUT, G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE));
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}
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static void
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gst_bitflowsrc_reset (GstBitflowSrc * src)
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{
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src->board = NULL;
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memset (&src->buffer_array, 0, sizeof (src->buffer_array));
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src->error_string[0] = 0;
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src->last_frame_count = 0;
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src->total_dropped_frames = 0;
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if (src->caps) {
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gst_caps_unref (src->caps);
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src->caps = NULL;
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}
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}
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static void
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gst_bitflowsrc_init (GstBitflowSrc * src)
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{
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/* set source as live (no preroll) */
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gst_base_src_set_live (GST_BASE_SRC (src), TRUE);
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/* override default of BYTES to operate in time mode */
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gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
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/* initialize member variables */
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src->camera_file = g_strdup (DEFAULT_PROP_CAMERA_FILE);
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src->num_capture_buffers = DEFAULT_PROP_NUM_CAPTURE_BUFFERS;
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src->board_index = DEFAULT_PROP_BOARD;
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src->timeout = DEFAULT_PROP_TIMEOUT;
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src->stop_requested = FALSE;
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src->caps = NULL;
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gst_bitflowsrc_reset (src);
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}
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void
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gst_bitflowsrc_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstBitflowSrc *src;
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src = GST_BITFLOW_SRC (object);
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switch (property_id) {
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case PROP_CAMERA_FILE:
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g_free (src->camera_file);
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src->camera_file = g_strdup (g_value_get_string (value));
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break;
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case PROP_NUM_CAPTURE_BUFFERS:
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src->num_capture_buffers = g_value_get_uint (value);
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break;
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case PROP_BOARD:
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src->board_index = g_value_get_uint (value);
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break;
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case PROP_TIMEOUT:
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src->timeout = g_value_get_int (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_bitflowsrc_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstBitflowSrc *src;
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g_return_if_fail (GST_IS_BITFLOW_SRC (object));
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src = GST_BITFLOW_SRC (object);
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switch (property_id) {
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case PROP_CAMERA_FILE:
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g_value_set_string (value, src->camera_file);
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break;
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case PROP_NUM_CAPTURE_BUFFERS:
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g_value_set_uint (value, src->num_capture_buffers);
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break;
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case PROP_BOARD:
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g_value_set_uint (value, src->board_index);
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break;
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case PROP_TIMEOUT:
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g_value_set_int (value, src->timeout);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
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break;
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}
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}
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void
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gst_bitflowsrc_dispose (GObject * object)
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{
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GstBitflowSrc *src;
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g_return_if_fail (GST_IS_BITFLOW_SRC (object));
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src = GST_BITFLOW_SRC (object);
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/* clean up as possible. may be called multiple times */
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G_OBJECT_CLASS (gst_bitflowsrc_parent_class)->dispose (object);
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}
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void
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gst_bitflowsrc_finalize (GObject * object)
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{
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GstBitflowSrc *src;
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g_return_if_fail (GST_IS_BITFLOW_SRC (object));
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src = GST_BITFLOW_SRC (object);
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/* clean up object here */
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g_free (src->camera_file);
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if (src->caps) {
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gst_caps_unref (src->caps);
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src->caps = NULL;
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}
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G_OBJECT_CLASS (gst_bitflowsrc_parent_class)->finalize (object);
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}
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static gboolean
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gst_bitflowsrc_start (GstBaseSrc * bsrc)
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{
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GstBitflowSrc *src = GST_BITFLOW_SRC (bsrc);
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BFRC ret;
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guint32 width, height, bpp, stride;
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GstVideoInfo vinfo;
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GST_DEBUG_OBJECT (src, "start");
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if (strlen (src->camera_file)) {
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if (!g_file_test (src->camera_file, G_FILE_TEST_EXISTS)) {
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GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND,
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("Camera file does not exist: %s", src->camera_file), (NULL));
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return FALSE;
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}
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ret =
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BiBrdOpenCam (BiTypeAny, src->board_index, &src->board,
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src->camera_file);
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if (ret != BI_OK) {
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GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
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("Board could not be opened with camera file: %s", src->camera_file),
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(NULL));
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return FALSE;
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}
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} else {
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/* use default camera file set in SysReg */
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ret = BiBrdOpen (BiTypeAny, src->board_index, &src->board);
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if (ret != BI_OK) {
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GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ,
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("Board could not be opened with default camera file"), (NULL));
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return FALSE;
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}
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}
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{
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BFCHAR ModelSt[MAX_STRING];
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BFCHAR FamilySt[MAX_STRING];
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BFU32 FamilyIndex;
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BFU32 CiFamily;
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BFGetBoardStrings (src->board, ModelSt, MAX_STRING, FamilySt, MAX_STRING,
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&FamilyIndex, &CiFamily);
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GST_DEBUG_OBJECT (src, "Board \"%s(%d) - %s\" has been opened.\n", FamilySt,
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src->board_index, ModelSt);
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}
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ret =
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BiBufferAllocCam (src->board, &src->buffer_array,
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src->num_capture_buffers);
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if (ret != BI_OK) {
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GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
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("Failed to allocate buffers: %s", gst_bitflowsrc_get_error_string (src,
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ret)), (NULL));
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BiBrdClose (src->board);
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return FALSE;
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}
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/* CirErIgnore will cause "tearing" if buffers aren't handled fast enough */
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/* TODO: CirErLast and CirErNew might be available in some hardware,
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which would prevent tearing but would drop frames */
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ret =
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BiCircAqSetup (src->board, &src->buffer_array, CirErIgnore,
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BiAqEngJ | NoResetOnError);
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if (ret != BI_OK) {
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GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
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("Failed to setup circular acquisition: %s",
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gst_bitflowsrc_get_error_string (src, ret)), (NULL));
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BiBufferFree (src->board, &src->buffer_array);
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BiBrdClose (src->board);
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return FALSE;
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}
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|
||||
/* BiCamInqFormat gets tap config, see BFFormatStandard */
|
||||
/* BiCamInqCamType gets line/area, see BFCamTypeAreaScan */
|
||||
/* BiCamInqBytesPerPix gets bytes per pixel */
|
||||
/* BiCamInqFrameSize0 gets total frame size */
|
||||
BiBrdInquire (src->board, BiCamInqXSize, &width);
|
||||
BiBrdInquire (src->board, BiCamInqYSize0, &height);
|
||||
BiBrdInquire (src->board, BiCamInqBitsPerPix, &bpp);
|
||||
BiBrdInquire (src->board, BiCamInqFrameWidth, &stride);
|
||||
|
||||
/* create caps */
|
||||
if (src->caps) {
|
||||
gst_caps_unref (src->caps);
|
||||
src->caps = NULL;
|
||||
}
|
||||
|
||||
gst_video_info_init (&vinfo);
|
||||
vinfo.width = width;
|
||||
vinfo.height = height;
|
||||
|
||||
if (bpp <= 8) {
|
||||
vinfo.finfo = gst_video_format_get_info (GST_VIDEO_FORMAT_GRAY8);
|
||||
src->caps = gst_video_info_to_caps (&vinfo);
|
||||
} else if (bpp > 8 && bpp <= 16) {
|
||||
GValue val = G_VALUE_INIT;
|
||||
GstStructure *s;
|
||||
|
||||
if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
|
||||
vinfo.finfo = gst_video_format_get_info (GST_VIDEO_FORMAT_GRAY16_LE);
|
||||
else if (G_BYTE_ORDER == G_BIG_ENDIAN)
|
||||
vinfo.finfo = gst_video_format_get_info (GST_VIDEO_FORMAT_GRAY16_BE);
|
||||
src->caps = gst_video_info_to_caps (&vinfo);
|
||||
|
||||
/* set bpp, extra info for GRAY16 so elements can scale properly */
|
||||
s = gst_caps_get_structure (src->caps, 0);
|
||||
g_value_init (&val, G_TYPE_INT);
|
||||
g_value_set_int (&val, bpp);
|
||||
gst_structure_set_value (s, "bpp", &val);
|
||||
g_value_unset (&val);
|
||||
} else {
|
||||
GST_ELEMENT_ERROR (src, STREAM, WRONG_TYPE,
|
||||
("Unknown or unsupported bit depth (%d).", bpp), (NULL));
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
src->height = vinfo.height;
|
||||
src->gst_stride = GST_VIDEO_INFO_COMP_STRIDE (&vinfo, 0);
|
||||
src->bf_stride = stride;
|
||||
|
||||
GST_DEBUG_OBJECT (src, "starting acquisition");
|
||||
ret = BiCirControl (src->board, &src->buffer_array, BISTART, BiWait);
|
||||
if (ret != BI_OK) {
|
||||
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
|
||||
("Failed to start grabbing: %s", gst_bitflowsrc_get_error_string (src,
|
||||
ret)), (NULL));
|
||||
BiCircCleanUp (src->board, &src->buffer_array);
|
||||
BiBufferFree (src->board, &src->buffer_array);
|
||||
BiBrdClose (src->board);
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
/* TODO: check timestamps on buffers vs start time */
|
||||
src->acq_start_time =
|
||||
gst_clock_get_time (gst_element_get_clock (GST_ELEMENT (src)));
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_bitflowsrc_stop (GstBaseSrc * bsrc)
|
||||
{
|
||||
GstBitflowSrc *src = GST_BITFLOW_SRC (bsrc);
|
||||
BFRC ret;
|
||||
GST_DEBUG_OBJECT (src, "stop");
|
||||
|
||||
ret = BiCircCleanUp (src->board, &src->buffer_array);
|
||||
if (ret != BI_OK) {
|
||||
GST_WARNING_OBJECT (src, "Failed to cleanup circular acquisition: %s",
|
||||
gst_bitflowsrc_get_error_string (src, ret));
|
||||
}
|
||||
|
||||
ret = BiBufferFree (src->board, &src->buffer_array);
|
||||
if (ret != BI_OK) {
|
||||
GST_WARNING_OBJECT (src, "Failed to free buffer array: %s",
|
||||
gst_bitflowsrc_get_error_string (src, ret));
|
||||
}
|
||||
|
||||
ret = BiBrdClose (src->board);
|
||||
if (ret != BI_OK) {
|
||||
GST_WARNING_OBJECT (src, "Failed to free buffer array: %s",
|
||||
gst_bitflowsrc_get_error_string (src, ret));
|
||||
}
|
||||
|
||||
gst_bitflowsrc_reset (src);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstCaps *
|
||||
gst_bitflowsrc_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
|
||||
{
|
||||
GstBitflowSrc *src = GST_BITFLOW_SRC (bsrc);
|
||||
GstCaps *caps;
|
||||
|
||||
if (src->board == 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 gboolean
|
||||
gst_bitflowsrc_set_caps (GstBaseSrc * bsrc, GstCaps * caps)
|
||||
{
|
||||
GstBitflowSrc *src = GST_BITFLOW_SRC (bsrc);
|
||||
GstVideoInfo vinfo;
|
||||
GstStructure *s = gst_caps_get_structure (caps, 0);
|
||||
|
||||
GST_DEBUG_OBJECT (src, "The caps being set are %" GST_PTR_FORMAT, caps);
|
||||
|
||||
gst_video_info_from_caps (&vinfo, caps);
|
||||
|
||||
if (GST_VIDEO_INFO_FORMAT (&vinfo) != GST_VIDEO_FORMAT_UNKNOWN) {
|
||||
src->gst_stride = GST_VIDEO_INFO_COMP_STRIDE (&vinfo, 0);
|
||||
} else {
|
||||
goto unsupported_caps;
|
||||
}
|
||||
|
||||
return TRUE;
|
||||
|
||||
unsupported_caps:
|
||||
GST_ERROR_OBJECT (src, "Unsupported caps: %" GST_PTR_FORMAT, caps);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_bitflowsrc_unlock (GstBaseSrc * bsrc)
|
||||
{
|
||||
GstBitflowSrc *src = GST_BITFLOW_SRC (bsrc);
|
||||
|
||||
GST_LOG_OBJECT (src, "unlock");
|
||||
|
||||
src->stop_requested = TRUE;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static gboolean
|
||||
gst_bitflowsrc_unlock_stop (GstBaseSrc * bsrc)
|
||||
{
|
||||
GstBitflowSrc *src = GST_BITFLOW_SRC (bsrc);
|
||||
|
||||
GST_LOG_OBJECT (src, "unlock_stop");
|
||||
|
||||
src->stop_requested = FALSE;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
static GstBuffer *
|
||||
gst_bitflowsrc_create_buffer_from_circ_handle (GstBitflowSrc * src,
|
||||
BiCirHandle * circ_handle)
|
||||
{
|
||||
GstMapInfo minfo;
|
||||
GstBuffer *buf;
|
||||
|
||||
/* TODO: use allocator or use from pool */
|
||||
buf = gst_buffer_new_and_alloc (src->height * src->gst_stride);
|
||||
|
||||
/* Copy image to buffer from surface */
|
||||
gst_buffer_map (buf, &minfo, GST_MAP_WRITE);
|
||||
GST_LOG_OBJECT (src,
|
||||
"GstBuffer size=%d, gst_stride=%d, buffer_num=%d, frame_count=%d, num_frames_on_queue=%d",
|
||||
minfo.size, src->gst_stride, circ_handle->BufferNumber,
|
||||
circ_handle->FrameCount, circ_handle->NumItemsOnQueue);
|
||||
GST_LOG_OBJECT (src, "Buffer timestamp %02d:%02d:%02d.%06d",
|
||||
circ_handle->HiResTimeStamp.hour, circ_handle->HiResTimeStamp.min,
|
||||
circ_handle->HiResTimeStamp.sec, circ_handle->HiResTimeStamp.usec);
|
||||
|
||||
/* TODO: use orc_memcpy */
|
||||
if (src->gst_stride == src->bf_stride) {
|
||||
memcpy (minfo.data, ((guint8 *) circ_handle->pBufData), minfo.size);
|
||||
} else {
|
||||
int i;
|
||||
GST_LOG_OBJECT (src, "Image strides not identical, copy will be slower.");
|
||||
for (i = 0; i < src->height; i++) {
|
||||
memcpy (minfo.data + i * src->gst_stride,
|
||||
((guint8 *) circ_handle->pBufData) +
|
||||
i * src->bf_stride, src->bf_stride);
|
||||
}
|
||||
}
|
||||
gst_buffer_unmap (buf, &minfo);
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
||||
static GstFlowReturn
|
||||
gst_bitflowsrc_create (GstPushSrc * psrc, GstBuffer ** buf)
|
||||
{
|
||||
GstBitflowSrc *src = GST_BITFLOW_SRC (psrc);
|
||||
BFRC ret;
|
||||
BiCirHandle circ_handle;
|
||||
guint32 dropped_frames;
|
||||
GstClock *clock;
|
||||
GstClockTime clock_time;
|
||||
|
||||
GST_LOG_OBJECT (src, "create");
|
||||
|
||||
/* wait for next frame to be available */
|
||||
ret = BiCirWaitDoneFrame (src->board, &src->buffer_array,
|
||||
src->timeout, &circ_handle);
|
||||
if (ret != BI_OK) {
|
||||
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
|
||||
("Failed to acquire frame: %s", gst_bitflowsrc_get_error_string (src,
|
||||
ret)), (NULL));
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
clock = gst_element_get_clock (GST_ELEMENT (src));
|
||||
clock_time = gst_clock_get_time (clock);
|
||||
gst_object_unref (clock);
|
||||
|
||||
/* check for dropped frames and disrupted signal */
|
||||
dropped_frames = (circ_handle.FrameCount - src->last_frame_count) - 1;
|
||||
if (dropped_frames > 0) {
|
||||
src->total_dropped_frames += dropped_frames;
|
||||
GST_WARNING_OBJECT (src, "Dropped %d frames (%d total)", dropped_frames,
|
||||
src->total_dropped_frames);
|
||||
} else if (dropped_frames < 0) {
|
||||
GST_WARNING_OBJECT (src, "Frame count non-monotonic, signal disrupted?");
|
||||
}
|
||||
src->last_frame_count = circ_handle.FrameCount;
|
||||
|
||||
/* create GstBuffer then release circ buffer back to acquisition */
|
||||
*buf = gst_bitflowsrc_create_buffer_from_circ_handle (src, &circ_handle);
|
||||
ret =
|
||||
BiCirStatusSet (src->board, &src->buffer_array, circ_handle, BIAVAILABLE);
|
||||
if (ret != BI_OK) {
|
||||
GST_ELEMENT_ERROR (src, RESOURCE, FAILED,
|
||||
("Failed to release buffer: %s", gst_bitflowsrc_get_error_string (src,
|
||||
ret)), (NULL));
|
||||
return GST_FLOW_ERROR;
|
||||
}
|
||||
|
||||
/* TODO: understand why timestamps for circ_handle are sometimes 0 */
|
||||
//GST_BUFFER_TIMESTAMP (*buf) =
|
||||
// GST_CLOCK_DIFF (gst_element_get_base_time (GST_ELEMENT (src)),
|
||||
// src->acq_start_time + circ_handle.HiResTimeStamp.totalSec * GST_SECOND);
|
||||
GST_BUFFER_TIMESTAMP (*buf) =
|
||||
GST_CLOCK_DIFF (gst_element_get_base_time (GST_ELEMENT (src)),
|
||||
clock_time);
|
||||
GST_BUFFER_OFFSET (*buf) = circ_handle.FrameCount - 1;
|
||||
|
||||
if (src->stop_requested) {
|
||||
if (*buf != NULL) {
|
||||
gst_buffer_unref (*buf);
|
||||
*buf = NULL;
|
||||
}
|
||||
return GST_FLOW_FLUSHING;
|
||||
}
|
||||
|
||||
return GST_FLOW_OK;
|
||||
}
|
||||
|
||||
gchar *
|
||||
gst_bitflowsrc_get_error_string (GstBitflowSrc * src, BIRC error_num)
|
||||
{
|
||||
BFU32 error_string_size = MAX_STRING;
|
||||
BiErrorTextGet (src->board, error_num, src->error_string, &error_string_size);
|
||||
return src->error_string;
|
||||
}
|
||||
|
||||
|
||||
static gboolean
|
||||
plugin_init (GstPlugin * plugin)
|
||||
{
|
||||
GST_DEBUG_CATEGORY_INIT (gst_bitflowsrc_debug, "bitflowsrc", 0,
|
||||
"debug category for bitflowsrc element");
|
||||
gst_element_register (plugin, "bitflowsrc", GST_RANK_NONE,
|
||||
gst_bitflowsrc_get_type ());
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
|
||||
GST_VERSION_MINOR,
|
||||
bitflow,
|
||||
"BitFlow frame grabber source",
|
||||
plugin_init, VERSION, "LGPL", PACKAGE_NAME, GST_PACKAGE_ORIGIN)
|
||||
74
sys/bitflow/gstbitflowsrc.h
Normal file
74
sys/bitflow/gstbitflowsrc.h
Normal file
@ -0,0 +1,74 @@
|
||||
/* GStreamer
|
||||
* Copyright (C) 2011 FIXME <fixme@example.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., 59 Temple Place - Suite 330,
|
||||
* Boston, MA 02111-1307, USA.
|
||||
*/
|
||||
|
||||
#ifndef _GST_BITFLOW_SRC_H_
|
||||
#define _GST_BITFLOW_SRC_H_
|
||||
|
||||
#include <gst/base/gstpushsrc.h>
|
||||
|
||||
#include "BiApi.h"
|
||||
|
||||
G_BEGIN_DECLS
|
||||
|
||||
#define GST_TYPE_BITFLOW_SRC (gst_bitflowsrc_get_type())
|
||||
#define GST_BITFLOW_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_BITFLOW_SRC,GstBitflowSrc))
|
||||
#define GST_BITFLOW_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_BITFLOW_SRC,GstBitflowSrcClass))
|
||||
#define GST_IS_BITFLOW_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_BITFLOW_SRC))
|
||||
#define GST_IS_BITFLOW_SRC_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_BITFLOW_SRC))
|
||||
|
||||
typedef struct _GstBitflowSrc GstBitflowSrc;
|
||||
typedef struct _GstBitflowSrcClass GstBitflowSrcClass;
|
||||
|
||||
struct _GstBitflowSrc
|
||||
{
|
||||
GstPushSrc base_bitflowsrc;
|
||||
|
||||
/* camera handle */
|
||||
Bd board;
|
||||
BIBA buffer_array;
|
||||
BFCHAR error_string[MAX_STRING];
|
||||
|
||||
/* properties */
|
||||
gchar *camera_file;
|
||||
guint num_capture_buffers;
|
||||
guint board_index;
|
||||
gint timeout;
|
||||
|
||||
GstClockTime acq_start_time;
|
||||
guint32 last_frame_count;
|
||||
guint32 total_dropped_frames;
|
||||
|
||||
GstCaps *caps;
|
||||
gint height;
|
||||
gint gst_stride;
|
||||
gint bf_stride;
|
||||
|
||||
gboolean stop_requested;
|
||||
};
|
||||
|
||||
struct _GstBitflowSrcClass
|
||||
{
|
||||
GstPushSrcClass base_bitflowsrc_class;
|
||||
};
|
||||
|
||||
GType gst_bitflowsrc_get_type (void);
|
||||
|
||||
G_END_DECLS
|
||||
|
||||
#endif
|
||||
Loading…
x
Reference in New Issue
Block a user