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491 lines
13 KiB
C
491 lines
13 KiB
C
/* GStreamer
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* Copyright (C) 2010 David Schleef <ds@entropywave.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., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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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/gstbasesink.h>
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#include "gstlinsyssdisink.h"
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <poll.h>
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#include <sys/ioctl.h>
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#include "sdivideo.h"
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/* prototypes */
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static void gst_linsys_sdi_sink_set_property (GObject * object,
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guint property_id, const GValue * value, GParamSpec * pspec);
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static void gst_linsys_sdi_sink_get_property (GObject * object,
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guint property_id, GValue * value, GParamSpec * pspec);
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static void gst_linsys_sdi_sink_dispose (GObject * object);
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static void gst_linsys_sdi_sink_finalize (GObject * object);
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static GstCaps *gst_linsys_sdi_sink_get_caps (GstBaseSink * sink);
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static gboolean gst_linsys_sdi_sink_set_caps (GstBaseSink * sink,
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GstCaps * caps);
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static GstFlowReturn gst_linsys_sdi_sink_buffer_alloc (GstBaseSink * sink,
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guint64 offset, guint size, GstCaps * caps, GstBuffer ** buf);
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static void gst_linsys_sdi_sink_get_times (GstBaseSink * sink,
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GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
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static gboolean gst_linsys_sdi_sink_start (GstBaseSink * sink);
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static gboolean gst_linsys_sdi_sink_stop (GstBaseSink * sink);
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static gboolean gst_linsys_sdi_sink_unlock (GstBaseSink * sink);
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static gboolean gst_linsys_sdi_sink_event (GstBaseSink * sink,
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GstEvent * event);
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static GstFlowReturn gst_linsys_sdi_sink_preroll (GstBaseSink * sink,
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GstBuffer * buffer);
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static GstFlowReturn gst_linsys_sdi_sink_render (GstBaseSink * sink,
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GstBuffer * buffer);
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static GstStateChangeReturn gst_linsys_sdi_sink_async_play (GstBaseSink * sink);
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static gboolean gst_linsys_sdi_sink_activate_pull (GstBaseSink * sink,
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gboolean active);
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static void gst_linsys_sdi_sink_fixate (GstBaseSink * sink, GstCaps * caps);
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static gboolean gst_linsys_sdi_sink_unlock_stop (GstBaseSink * sink);
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static GstFlowReturn
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gst_linsys_sdi_sink_render_list (GstBaseSink * sink,
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GstBufferList * buffer_list);
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enum
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{
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PROP_0,
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PROP_DEVICE
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};
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#define DEFAULT_DEVICE "/dev/sditx0"
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/* pad templates */
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static GstStaticPadTemplate gst_linsys_sdi_sink_sink_template =
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GST_STATIC_PAD_TEMPLATE ("sink",
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GST_PAD_SINK,
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GST_PAD_ALWAYS,
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GST_STATIC_CAPS ("video/x-raw-yuv,format=(fourcc)UYVY,"
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"width=720,height=480,pixel-aspect-ratio=10/11,"
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"framerate=30000/1001,interlaced=true,"
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"colorspec=sdtv,chroma-site=mpeg2")
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);
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/* class initialization */
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GST_BOILERPLATE (GstLinsysSdiSink, gst_linsys_sdi_sink, GstBaseSink,
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GST_TYPE_BASE_SINK);
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static void
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gst_linsys_sdi_sink_base_init (gpointer g_class)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
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gst_element_class_add_pad_template (element_class,
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gst_static_pad_template_get (&gst_linsys_sdi_sink_sink_template));
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gst_element_class_set_details_simple (element_class, "SDI video sink",
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"Sink/Video", "Writes video from SDI transmit device",
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"David Schleef <ds@entropywave.com>");
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}
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static void
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gst_linsys_sdi_sink_class_init (GstLinsysSdiSinkClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstBaseSinkClass *base_sink_class = GST_BASE_SINK_CLASS (klass);
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gobject_class->set_property = gst_linsys_sdi_sink_set_property;
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gobject_class->get_property = gst_linsys_sdi_sink_get_property;
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gobject_class->dispose = gst_linsys_sdi_sink_dispose;
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gobject_class->finalize = gst_linsys_sdi_sink_finalize;
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base_sink_class->get_caps = GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_get_caps);
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base_sink_class->set_caps = GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_set_caps);
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if (0)
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base_sink_class->buffer_alloc =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_buffer_alloc);
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base_sink_class->get_times =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_get_times);
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base_sink_class->start = GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_start);
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base_sink_class->stop = GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_stop);
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base_sink_class->unlock = GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_unlock);
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base_sink_class->event = GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_event);
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base_sink_class->preroll = GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_preroll);
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base_sink_class->render = GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_render);
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if (0)
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base_sink_class->async_play =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_async_play);
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if (0)
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base_sink_class->activate_pull =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_activate_pull);
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base_sink_class->fixate = GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_fixate);
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base_sink_class->unlock_stop =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_unlock_stop);
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base_sink_class->render_list =
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GST_DEBUG_FUNCPTR (gst_linsys_sdi_sink_render_list);
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g_object_class_install_property (gobject_class, PROP_DEVICE,
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g_param_spec_string ("device", "Device", "device to transmit data on",
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DEFAULT_DEVICE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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static void
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gst_linsys_sdi_sink_init (GstLinsysSdiSink * linsyssdisink,
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GstLinsysSdiSinkClass * linsyssdisink_class)
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{
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linsyssdisink->device = g_strdup (DEFAULT_DEVICE);
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}
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void
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gst_linsys_sdi_sink_set_property (GObject * object, guint property_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstLinsysSdiSink *linsyssdisink;
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g_return_if_fail (GST_IS_LINSYS_SDI_SINK (object));
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linsyssdisink = GST_LINSYS_SDI_SINK (object);
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switch (property_id) {
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case PROP_DEVICE:
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g_free (linsyssdisink->device);
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linsyssdisink->device = g_value_dup_string (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_linsys_sdi_sink_get_property (GObject * object, guint property_id,
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GValue * value, GParamSpec * pspec)
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{
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GstLinsysSdiSink *linsyssdisink;
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g_return_if_fail (GST_IS_LINSYS_SDI_SINK (object));
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linsyssdisink = GST_LINSYS_SDI_SINK (object);
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switch (property_id) {
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case PROP_DEVICE:
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g_value_set_string (value, linsyssdisink->device);
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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_linsys_sdi_sink_dispose (GObject * object)
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{
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GstLinsysSdiSink *linsyssdisink;
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g_return_if_fail (GST_IS_LINSYS_SDI_SINK (object));
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linsyssdisink = GST_LINSYS_SDI_SINK (object);
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/* clean up as possible. may be called multiple times */
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G_OBJECT_CLASS (parent_class)->dispose (object);
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}
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void
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gst_linsys_sdi_sink_finalize (GObject * object)
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{
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GstLinsysSdiSink *linsyssdisink;
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g_return_if_fail (GST_IS_LINSYS_SDI_SINK (object));
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linsyssdisink = GST_LINSYS_SDI_SINK (object);
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/* clean up object here */
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G_OBJECT_CLASS (parent_class)->finalize (object);
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}
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static GstCaps *
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gst_linsys_sdi_sink_get_caps (GstBaseSink * sink)
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{
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GST_ERROR_OBJECT (sink, "get_caps");
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return NULL;
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}
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static gboolean
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gst_linsys_sdi_sink_set_caps (GstBaseSink * sink, GstCaps * caps)
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{
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GST_ERROR_OBJECT (sink, "set_caps");
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return TRUE;
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}
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static GstFlowReturn
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gst_linsys_sdi_sink_buffer_alloc (GstBaseSink * sink, guint64 offset,
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guint size, GstCaps * caps, GstBuffer ** buf)
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{
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GST_ERROR_OBJECT (sink, "buffer_alloc");
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return GST_FLOW_ERROR;
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}
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static void
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gst_linsys_sdi_sink_get_times (GstBaseSink * sink, GstBuffer * buffer,
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GstClockTime * start, GstClockTime * end)
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{
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}
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static gboolean
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gst_linsys_sdi_sink_start (GstBaseSink * sink)
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{
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GstLinsysSdiSink *linsyssdisink = GST_LINSYS_SDI_SINK (sink);
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int fd;
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GST_ERROR_OBJECT (sink, "start");
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fd = open (linsyssdisink->device, O_WRONLY, 0);
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if (fd < 0) {
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GST_ERROR_OBJECT (sink, "failed to open device");
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return FALSE;
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}
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linsyssdisink->fd = fd;
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linsyssdisink->tmpdata = g_malloc (858 * 525 * 2);
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return TRUE;
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}
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static gboolean
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gst_linsys_sdi_sink_stop (GstBaseSink * sink)
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{
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GstLinsysSdiSink *linsyssdisink = GST_LINSYS_SDI_SINK (sink);
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GST_ERROR_OBJECT (sink, "stop");
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if (linsyssdisink->fd > 0) {
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close (linsyssdisink->fd);
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}
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g_free (linsyssdisink->tmpdata);
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linsyssdisink->tmpdata = NULL;
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return TRUE;
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}
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static gboolean
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gst_linsys_sdi_sink_unlock (GstBaseSink * sink)
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{
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GST_ERROR_OBJECT (sink, "unlock");
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return TRUE;
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}
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static gboolean
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gst_linsys_sdi_sink_event (GstBaseSink * sink, GstEvent * event)
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{
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GST_ERROR_OBJECT (sink, "event");
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return TRUE;
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}
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static GstFlowReturn
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gst_linsys_sdi_sink_preroll (GstBaseSink * sink, GstBuffer * buffer)
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{
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GST_ERROR_OBJECT (sink, "preroll");
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return GST_FLOW_OK;
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}
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#define EAV 0x74
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#define SAV 0x80
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static int
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get_av (int f, int v, int h)
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{
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static int table[] = {
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0x80, 0x9d, 0xab, 0xb6, 0xc7, 0xda, 0xec, 0xf1
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};
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return table[(f << 2) | (v << 1) | h];
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}
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static void
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sdi_mux (guint8 * data, GstBuffer * buffer)
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{
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int j;
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int i;
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guint8 *dest;
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int f, v, h;
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int line;
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for (j = 0; j < 525; j++) {
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dest = data + 858 * 2 * j;
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line = (j + 4) % 525;
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if (line < 10 || (line >= 264 && line < 273)) {
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v = 1;
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} else {
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v = 0;
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}
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if (line >= 266 || line < 4) {
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f = 1;
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} else {
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f = 0;
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}
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h = 0;
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dest[0] = 0xff;
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dest[1] = 0;
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dest[2] = 0;
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dest[3] = get_av (f, v, 1);
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for (i = 1; i < (858 - 720) / 2 - 1; i++) {
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dest[i * 4 + 0] = 0x200 >> 2;
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dest[i * 4 + 1] = 0x040 >> 2;
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dest[i * 4 + 2] = 0x200 >> 2;
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dest[i * 4 + 3] = 0x040 >> 2;
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}
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i = (858 - 720) / 2 - 1;
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dest[i * 4 + 0] = 0xff;
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dest[i * 4 + 1] = 0x00;
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dest[i * 4 + 2] = 0x00;
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dest[3] = get_av (f, v, 0);
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i = (858 - 720) / 2;
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if (line >= 23 && line <= 262) {
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int src_line = (line - 23) * 2 + 1;
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memcpy (dest + i * 4, GST_BUFFER_DATA (buffer) + 720 * 2 * src_line,
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720 * 2);
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} else if (line >= 285 && line <= 525) {
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int src_line = (line - 285) * 2 + 0;
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memcpy (dest + i * 4, GST_BUFFER_DATA (buffer) + 720 * 2 * src_line,
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720 * 2);
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} else {
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for (i = (858 - 720) / 2; i < 858 / 2; i++) {
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dest[i * 4 + 0] = 0x200 >> 2;
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dest[i * 4 + 1] = 0x040 >> 2;
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dest[i * 4 + 2] = 0x200 >> 2;
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dest[i * 4 + 3] = 0x040 >> 2;
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}
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}
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}
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}
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static GstFlowReturn
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gst_linsys_sdi_sink_render (GstBaseSink * sink, GstBuffer * buffer)
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{
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GstLinsysSdiSink *linsyssdisink = GST_LINSYS_SDI_SINK (sink);
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int ret;
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struct pollfd pfd;
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int offset;
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guint8 *data = linsyssdisink->tmpdata;
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GST_ERROR_OBJECT (sink, "render");
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sdi_mux (data, buffer);
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offset = 0;
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#define SIZE (858*525*2)
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while (offset < SIZE) {
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pfd.fd = linsyssdisink->fd;
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pfd.events = POLLOUT | POLLPRI;
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ret = poll (&pfd, 1, -1);
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if (ret < 0) {
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GST_ERROR_OBJECT (sink, "poll failed %d", ret);
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return GST_FLOW_ERROR;
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}
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if (pfd.revents & POLLOUT) {
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ret = write (linsyssdisink->fd, data + offset, SIZE - offset);
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if (ret < 0) {
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GST_ERROR_OBJECT (sink, "write failed %d", ret);
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return GST_FLOW_ERROR;
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}
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offset += ret;
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}
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if (pfd.revents & POLLPRI) {
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long val;
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ret = ioctl (linsyssdisink->fd, SDIVIDEO_IOC_TXGETEVENTS, &val);
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if (ret < 0) {
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GST_ERROR_OBJECT (sink, "ioctl failed %d", ret);
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return GST_FLOW_ERROR;
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}
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if (val & SDIVIDEO_EVENT_TX_BUFFER) {
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GST_ERROR_OBJECT (sink, "transmit buffer underrun");
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return GST_FLOW_ERROR;
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}
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if (val & SDIVIDEO_EVENT_TX_FIFO) {
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GST_ERROR_OBJECT (sink, "transmit FIFO underrun");
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return GST_FLOW_ERROR;
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}
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if (val & SDIVIDEO_EVENT_TX_DATA) {
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GST_ERROR_OBJECT (sink, "transmit status change");
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}
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}
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}
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return GST_FLOW_OK;
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}
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static GstStateChangeReturn
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gst_linsys_sdi_sink_async_play (GstBaseSink * sink)
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{
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GST_ERROR_OBJECT (sink, "render");
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return GST_STATE_CHANGE_SUCCESS;
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}
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static gboolean
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gst_linsys_sdi_sink_activate_pull (GstBaseSink * sink, gboolean active)
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{
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GST_ERROR_OBJECT (sink, "activate_pull");
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return TRUE;
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}
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static void
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gst_linsys_sdi_sink_fixate (GstBaseSink * sink, GstCaps * caps)
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|
{
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|
GST_ERROR_OBJECT (sink, "fixate");
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|
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}
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|
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static gboolean
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gst_linsys_sdi_sink_unlock_stop (GstBaseSink * sink)
|
|
{
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|
GST_ERROR_OBJECT (sink, "unlock_stop");
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|
|
|
return TRUE;
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|
}
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|
|
|
static GstFlowReturn
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|
gst_linsys_sdi_sink_render_list (GstBaseSink * sink,
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|
GstBufferList * buffer_list)
|
|
{
|
|
GST_ERROR_OBJECT (sink, "render_list");
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|
|
|
return GST_FLOW_OK;
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|
}
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