gstreamer/sys/linsys/gstlinsyssdisrc.c

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/* 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/gstbasesrc.h>
#include "gstlinsyssdisrc.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_src_set_property (GObject * object,
guint property_id, const GValue * value, GParamSpec * pspec);
static void gst_linsys_sdi_src_get_property (GObject * object,
guint property_id, GValue * value, GParamSpec * pspec);
static void gst_linsys_sdi_src_dispose (GObject * object);
static void gst_linsys_sdi_src_finalize (GObject * object);
static GstCaps *gst_linsys_sdi_src_get_caps (GstBaseSrc * src);
static gboolean gst_linsys_sdi_src_set_caps (GstBaseSrc * src, GstCaps * caps);
static gboolean gst_linsys_sdi_src_negotiate (GstBaseSrc * src);
static gboolean gst_linsys_sdi_src_newsegment (GstBaseSrc * src);
static gboolean gst_linsys_sdi_src_start (GstBaseSrc * src);
static gboolean gst_linsys_sdi_src_stop (GstBaseSrc * src);
static void
gst_linsys_sdi_src_get_times (GstBaseSrc * src, GstBuffer * buffer,
GstClockTime * start, GstClockTime * end);
static gboolean gst_linsys_sdi_src_get_size (GstBaseSrc * src, guint64 * size);
static gboolean gst_linsys_sdi_src_is_seekable (GstBaseSrc * src);
static gboolean gst_linsys_sdi_src_unlock (GstBaseSrc * src);
static gboolean gst_linsys_sdi_src_event (GstBaseSrc * src, GstEvent * event);
static GstFlowReturn
gst_linsys_sdi_src_create (GstBaseSrc * src, guint64 offset, guint size,
GstBuffer ** buf);
static gboolean gst_linsys_sdi_src_do_seek (GstBaseSrc * src,
GstSegment * segment);
static gboolean gst_linsys_sdi_src_query (GstBaseSrc * src, GstQuery * query);
static gboolean gst_linsys_sdi_src_check_get_range (GstBaseSrc * src);
static void gst_linsys_sdi_src_fixate (GstBaseSrc * src, GstCaps * caps);
static gboolean gst_linsys_sdi_src_unlock_stop (GstBaseSrc * src);
static gboolean
gst_linsys_sdi_src_prepare_seek_segment (GstBaseSrc * src, GstEvent * seek,
GstSegment * segment);
enum
{
PROP_0,
PROP_DEVICE
};
#define DEFAULT_DEVICE "/dev/sdirx0"
GST_DEBUG_CATEGORY (gst_linsys_sdi_src_debug);
#define GST_CAT_DEFAULT gst_linsys_sdi_src_debug
/* pad templates */
static GstStaticPadTemplate gst_linsys_sdi_src_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
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 (GstLinsysSdiSrc, gst_linsys_sdi_src, GstBaseSrc,
GST_TYPE_BASE_SRC);
static void
gst_linsys_sdi_src_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_src_src_template));
gst_element_class_set_details_simple (element_class, "SDI video source",
"Source/Video", "Reads video from SDI capture device",
"David Schleef <ds@entropywave.com>");
}
static void
gst_linsys_sdi_src_class_init (GstLinsysSdiSrcClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstBaseSrcClass *base_src_class = GST_BASE_SRC_CLASS (klass);
GST_DEBUG_CATEGORY_INIT (gst_linsys_sdi_src_debug, "linsyssdisrc", 0,
"FIXME");
gobject_class->set_property = gst_linsys_sdi_src_set_property;
gobject_class->get_property = gst_linsys_sdi_src_get_property;
gobject_class->dispose = gst_linsys_sdi_src_dispose;
gobject_class->finalize = gst_linsys_sdi_src_finalize;
base_src_class->get_caps = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_get_caps);
base_src_class->set_caps = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_set_caps);
if (0)
base_src_class->negotiate =
GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_negotiate);
base_src_class->newsegment =
GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_newsegment);
base_src_class->start = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_start);
base_src_class->stop = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_stop);
base_src_class->get_times = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_get_times);
base_src_class->get_size = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_get_size);
base_src_class->is_seekable =
GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_is_seekable);
base_src_class->unlock = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_unlock);
base_src_class->event = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_event);
base_src_class->create = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_create);
if (0)
base_src_class->do_seek = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_do_seek);
base_src_class->query = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_query);
base_src_class->check_get_range =
GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_check_get_range);
base_src_class->fixate = GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_fixate);
base_src_class->unlock_stop =
GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_unlock_stop);
base_src_class->prepare_seek_segment =
GST_DEBUG_FUNCPTR (gst_linsys_sdi_src_prepare_seek_segment);
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_src_init (GstLinsysSdiSrc * linsyssdisrc,
GstLinsysSdiSrcClass * linsyssdisrc_class)
{
gst_base_src_set_live (GST_BASE_SRC (linsyssdisrc), TRUE);
gst_base_src_set_blocksize (GST_BASE_SRC (linsyssdisrc), 720 * 480 * 2);
linsyssdisrc->device = g_strdup (DEFAULT_DEVICE);
linsyssdisrc->is_625 = FALSE;
linsyssdisrc->fd = -1;
}
void
gst_linsys_sdi_src_set_property (GObject * object, guint property_id,
const GValue * value, GParamSpec * pspec)
{
GstLinsysSdiSrc *linsyssdisrc;
g_return_if_fail (GST_IS_LINSYS_SDI_SRC (object));
linsyssdisrc = GST_LINSYS_SDI_SRC (object);
switch (property_id) {
case PROP_DEVICE:
g_free (linsyssdisrc->device);
linsyssdisrc->device = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_linsys_sdi_src_get_property (GObject * object, guint property_id,
GValue * value, GParamSpec * pspec)
{
GstLinsysSdiSrc *linsyssdisrc;
g_return_if_fail (GST_IS_LINSYS_SDI_SRC (object));
linsyssdisrc = GST_LINSYS_SDI_SRC (object);
switch (property_id) {
case PROP_DEVICE:
g_value_set_string (value, linsyssdisrc->device);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
void
gst_linsys_sdi_src_dispose (GObject * object)
{
g_return_if_fail (GST_IS_LINSYS_SDI_SRC (object));
/* clean up as possible. may be called multiple times */
G_OBJECT_CLASS (parent_class)->dispose (object);
}
void
gst_linsys_sdi_src_finalize (GObject * object)
{
g_return_if_fail (GST_IS_LINSYS_SDI_SRC (object));
/* clean up object here */
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static GstCaps *
gst_linsys_sdi_src_get_caps (GstBaseSrc * src)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "get_caps");
return NULL;
}
static gboolean
gst_linsys_sdi_src_set_caps (GstBaseSrc * src, GstCaps * caps)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "set_caps");
return TRUE;
}
static gboolean
gst_linsys_sdi_src_negotiate (GstBaseSrc * src)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "negotiate");
return TRUE;
}
static gboolean
gst_linsys_sdi_src_newsegment (GstBaseSrc * src)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "newsegment");
return TRUE;
}
static gboolean
gst_linsys_sdi_src_start (GstBaseSrc * src)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
int fd;
GST_DEBUG_OBJECT (linsyssdisrc, "start");
fd = open (linsyssdisrc->device, O_RDONLY);
if (fd < 0) {
GST_ERROR_OBJECT (src, "failed to open device");
return FALSE;
}
linsyssdisrc->fd = fd;
if (linsyssdisrc->is_625) {
linsyssdisrc->tmpdata = g_malloc (864 * 625 * 2);
} else {
linsyssdisrc->tmpdata = g_malloc (858 * 525 * 2);
}
linsyssdisrc->have_sync = FALSE;
return TRUE;
}
static gboolean
gst_linsys_sdi_src_stop (GstBaseSrc * src)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "stop");
#if 0
if (linsyssdisrc->fd > 0) {
close (linsyssdisrc->fd);
linsyssdisrc->fd = -1;
}
g_free (linsyssdisrc->tmpdata);
linsyssdisrc->tmpdata = NULL;
#endif
return TRUE;
}
static void
gst_linsys_sdi_src_get_times (GstBaseSrc * src, GstBuffer * buffer,
GstClockTime * start, GstClockTime * end)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "get_times");
}
static gboolean
gst_linsys_sdi_src_get_size (GstBaseSrc * src, guint64 * size)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "get_size");
return FALSE;
}
static gboolean
gst_linsys_sdi_src_is_seekable (GstBaseSrc * src)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "is_seekable");
return FALSE;
}
static gboolean
gst_linsys_sdi_src_unlock (GstBaseSrc * src)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "unlock");
return TRUE;
}
static gboolean
gst_linsys_sdi_src_event (GstBaseSrc * src, GstEvent * event)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "event");
return TRUE;
}
static void
sdi_demux (guint8 * data, GstBuffer * buf, gboolean is_625)
{
int j;
int line;
int offset;
if (is_625) {
offset = (864 - 720) / 2;
for (j = 0; j < 480; j++) {
if (j & 1) {
line = 23 + (j - 1) / 2;
} else {
line = 335 + j / 2;
}
memcpy (GST_BUFFER_DATA (buf) + j * 720 * 2,
data + (line - 1) * 864 * 2 + offset * 4, 720 * 2);
}
} else {
offset = (858 - 720) / 2;
for (j = 0; j < 480; j++) {
if (j & 1) {
line = 23 + (j - 1) / 2;
} else {
line = 285 + j / 2;
}
memcpy (GST_BUFFER_DATA (buf) + j * 720 * 2,
data + (line - 1) * 858 * 2 + offset * 4, 720 * 2);
}
}
}
static GstFlowReturn
gst_linsys_sdi_src_create (GstBaseSrc * src, guint64 _offset, guint size,
GstBuffer ** buf)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
int offset;
int ret;
struct pollfd pfd;
int sdi_size;
int sdi_width;
guint8 *data = linsyssdisrc->tmpdata;
if (linsyssdisrc->fd < 0)
return GST_FLOW_WRONG_STATE;
if (linsyssdisrc->is_625) {
sdi_width = 864;
sdi_size = 864 * 625 * 2;
} else {
sdi_width = 858;
sdi_size = 858 * 525 * 2;
}
GST_DEBUG_OBJECT (linsyssdisrc, "create size=%d fd=%d", size,
linsyssdisrc->fd);
offset = 0;
while (offset < sdi_size) {
pfd.fd = linsyssdisrc->fd;
pfd.events = POLLIN | POLLPRI;
ret = poll (&pfd, 1, 1000);
if (ret < 0) {
GST_ERROR_OBJECT (src, "poll failed %d", ret);
return GST_FLOW_ERROR;
}
if (pfd.revents & POLLIN) {
if (linsyssdisrc->have_sync) {
ret = read (linsyssdisrc->fd, data + offset, sdi_size - offset);
} else {
ret = read (linsyssdisrc->fd, data + offset, sdi_width * 2);
}
if (ret < 0) {
GST_ERROR_OBJECT (src, "read failed %d", ret);
return GST_FLOW_ERROR;
}
if (!linsyssdisrc->have_sync) {
int v = (data[3] >> 5) & 1;
int f = (data[3] >> 6) & 1;
if (!linsyssdisrc->have_vblank && (f == 0) && (v == 1)) {
linsyssdisrc->have_vblank = TRUE;
} else if (linsyssdisrc->have_vblank && (f == 0) && (v == 0)) {
offset += sdi_width * 2 * 9;
linsyssdisrc->have_sync = TRUE;
offset += ret;
}
} else {
offset += ret;
}
}
if (pfd.revents & POLLPRI) {
long val;
ret = ioctl (linsyssdisrc->fd, SDIVIDEO_IOC_RXGETEVENTS, &val);
if (ret < 0) {
GST_ERROR_OBJECT (src, "ioctl failed %d", ret);
return GST_FLOW_ERROR;
}
if (val & SDIVIDEO_EVENT_RX_BUFFER) {
GST_ERROR_OBJECT (src, "receive buffer overrun");
return GST_FLOW_ERROR;
}
if (val & SDIVIDEO_EVENT_RX_FIFO) {
GST_ERROR_OBJECT (src, "receive FIFO overrun");
return GST_FLOW_ERROR;
}
if (val & SDIVIDEO_EVENT_RX_CARRIER) {
GST_ERROR_OBJECT (src, "carrier status change");
}
}
}
*buf = gst_buffer_new_and_alloc (size);
sdi_demux (data, *buf, linsyssdisrc->is_625);
return GST_FLOW_OK;
}
static gboolean
gst_linsys_sdi_src_do_seek (GstBaseSrc * src, GstSegment * segment)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "do_seek");
return FALSE;
}
static gboolean
gst_linsys_sdi_src_query (GstBaseSrc * src, GstQuery * query)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "query");
return TRUE;
}
static gboolean
gst_linsys_sdi_src_check_get_range (GstBaseSrc * src)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "get_range");
return FALSE;
}
static void
gst_linsys_sdi_src_fixate (GstBaseSrc * src, GstCaps * caps)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "fixate");
}
static gboolean
gst_linsys_sdi_src_unlock_stop (GstBaseSrc * src)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "stop");
return TRUE;
}
static gboolean
gst_linsys_sdi_src_prepare_seek_segment (GstBaseSrc * src, GstEvent * seek,
GstSegment * segment)
{
GstLinsysSdiSrc *linsyssdisrc = GST_LINSYS_SDI_SRC (src);
GST_DEBUG_OBJECT (linsyssdisrc, "seek_segment");
return FALSE;
}