gstreamer/sys/linsys/gstlinsyssdisink.c
2011-03-23 21:33:48 -07:00

491 lines
13 KiB
C

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