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gstreamer/ext/raw1394/gstdv1394src.c
Thomas Vander Stichele 54b0fe0f94 reverting error patch before making a branch. 
Original commit message from CVS:
reverting error patch before making a branch.
2003-09-16 10:00:02 +00:00

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* <2000> Daniel Fischer <dan@f3c.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.
*/
#include <gst/gst.h>
#include <string.h>
#include "gstdv1394src.h"
#define N_BUFFERS_IN_POOL 3
#define PAL_FRAMESIZE 144000
#define NTSC_FRAMESIZE 120000
/* Filter signals and args */
enum {
/* FILL ME */
LAST_SIGNAL
};
enum {
ARG_0,
ARG_CONSECUTIVE,
ARG_SKIP,
ARG_DROP_INCOMPLETE,
};
#if 0
static GstPadTemplate*
gst_dv1394src_factory (void)
{
static GstPadTemplate *template = NULL;
if (!template) {
template = gst_pad_template_new (
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_CAPS_NEW (
"dv1394src",
"video/dv",
/*
gst_props_new (
"format", GST_PROPS_LIST (
GST_PROPS_STRING ("NTSC"),
GST_PROPS_STRING ("PAL")
),
NULL)
),
*/
NULL);
}
return template;
}
#endif
static void gst_dv1394src_class_init (GstDV1394SrcClass *klass);
static void gst_dv1394src_init (GstDV1394Src *filter);
static void gst_dv1394src_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
static void gst_dv1394src_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
static GstElementStateReturn gst_dv1394src_change_state (GstElement *element);
static GstBuffer * gst_dv1394src_get (GstPad *pad);
static GstElementClass *parent_class = NULL;
/*static guint gst_filter_signals[LAST_SIGNAL] = { 0 }; */
GType
gst_dv1394src_get_type(void) {
static GType gst_dv1394src_type = 0;
if (!gst_dv1394src_type) {
static const GTypeInfo gst_dv1394src_info = {
sizeof(GstDV1394Src), NULL,
NULL,
(GClassInitFunc)gst_dv1394src_class_init,
NULL,
NULL,
sizeof(GstDV1394Src),
0,
(GInstanceInitFunc)gst_dv1394src_init,
};
gst_dv1394src_type = g_type_register_static(GST_TYPE_ELEMENT, "DV1394Src", &gst_dv1394src_info, 0);
}
return gst_dv1394src_type;
}
static void
gst_dv1394src_class_init (GstDV1394SrcClass *klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
gobject_class = (GObjectClass*)klass;
gstelement_class = (GstElementClass*)klass;
g_object_class_install_property( G_OBJECT_CLASS(klass), ARG_CONSECUTIVE,
g_param_spec_int("consecutive","consecutive frames","send n consecutive frames after skipping",
1, G_MAXINT,1,G_PARAM_READWRITE));
g_object_class_install_property( G_OBJECT_CLASS(klass), ARG_SKIP,
g_param_spec_int("skip","skip frames","skip n frames",
0, G_MAXINT,1,G_PARAM_READWRITE));
g_object_class_install_property( G_OBJECT_CLASS(klass), ARG_DROP_INCOMPLETE,
g_param_spec_boolean("drop_incomplete","drop_incomplete","drop incomplete frames",
TRUE, G_PARAM_READWRITE));
parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
gobject_class->set_property = gst_dv1394src_set_property;
gobject_class->get_property = gst_dv1394src_get_property;
gstelement_class->change_state = gst_dv1394src_change_state;
}
static void
gst_dv1394src_init (GstDV1394Src *dv1394src)
{
dv1394src->srcpad = gst_pad_new ("src", GST_PAD_SRC);
gst_pad_set_get_function (dv1394src->srcpad, gst_dv1394src_get);
gst_element_add_pad (GST_ELEMENT (dv1394src), dv1394src->srcpad);
dv1394src->card = 0;
dv1394src->port = 0;
dv1394src->channel = 63;
dv1394src->consecutive = 1;
dv1394src->skip = 0;
dv1394src->drop_incomplete = TRUE;
/* initialized when first header received */
dv1394src->frameSize=0;
dv1394src->pool = NULL;
dv1394src->buf = NULL;
dv1394src->frame = NULL;
dv1394src->frameSequence = 0;
}
static void
gst_dv1394src_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
{
GstDV1394Src *filter;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_DV1394SRC(object));
filter = GST_DV1394SRC(object);
switch (prop_id) {
case ARG_SKIP:
filter->skip = g_value_get_int(value);
break;
case ARG_CONSECUTIVE:
filter->consecutive = g_value_get_int(value);
break;
case ARG_DROP_INCOMPLETE:
filter->drop_incomplete = g_value_get_boolean(value);
break;
default:
break;
}
}
static void
gst_dv1394src_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
{
GstDV1394Src *filter;
/* it's not null if we got it, but it might not be ours */
g_return_if_fail(GST_IS_DV1394SRC(object));
filter = GST_DV1394SRC(object);
switch (prop_id) {
case ARG_SKIP:
g_value_set_int( value, filter->skip );
break;
case ARG_CONSECUTIVE:
g_value_set_int( value, filter->consecutive );
break;
case ARG_DROP_INCOMPLETE:
g_value_set_boolean( value, filter->drop_incomplete );
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static
int gst_dv1394src_iso_receive(raw1394handle_t handle,int channel,size_t len,quadlet_t *data) {
GstDV1394Src *dv1394src = GST_DV1394SRC (raw1394_get_userdata(handle));
if (len > 16) {
/*
the following code taken from kino-0.51 (Dan Dennedy/Charles Yates)
*/
unsigned char *p = (unsigned char*) & data[3];
int section_type = p[0] >> 5; /* section type is in bits 5 - 7 */
int dif_sequence = p[1] >> 4; /* dif sequence number is in bits 4 - 7 */
int dif_block = p[2];
/* if we are at the beginning of a frame,
we set buf=frame, and get a new buffer from pool for frame
*/
if (section_type == 0 && dif_sequence == 0) { // dif header
if( dv1394src->pool == NULL ) {
// figure format (NTSC/PAL)
if( p[3] & 0x80 ) {
// PAL
dv1394src->frameSize = PAL_FRAMESIZE;
GST_DEBUG ("PAL data");
if (gst_pad_try_set_caps (dv1394src->srcpad,
GST_CAPS_NEW ( "dv1394src", "video/dv",
"format", GST_PROPS_STRING("PAL"),
NULL)
) <= 0) {
gst_element_error (GST_ELEMENT(dv1394src), "Could not set source caps for PAL");
return 0;
}
} else {
// NTSC (untested)
dv1394src->frameSize = NTSC_FRAMESIZE;
GST_DEBUG ("NTSC data [untested] - please report success/failure to <dan@f3c.com>");
if (gst_pad_try_set_caps (dv1394src->srcpad,
GST_CAPS_NEW ( "dv1394src", "video/dv",
"format", GST_PROPS_STRING ("NTSC"),
NULL)
) <= 0) {
gst_element_error (GST_ELEMENT(dv1394src), "Could not set source caps for NTSC");
return 0;
}
}
dv1394src->pool = gst_buffer_pool_get_default( dv1394src->frameSize, N_BUFFERS_IN_POOL );
if (dv1394src->pool == NULL) {
gst_element_error (GST_ELEMENT(dv1394src), "gst_buffer_pool_get_default returned NULL");
}
}
// drop last frame when not complete
if( !dv1394src->drop_incomplete || dv1394src->bytesInFrame == dv1394src->frameSize ) {
dv1394src->buf = dv1394src->frame;
} else {
GST_INFO_OBJECT (GST_ELEMENT(dv1394src), "incomplete frame dropped");
}
dv1394src->frame = NULL;
dv1394src->frameSequence++;
if( dv1394src->frameSequence % (dv1394src->skip+dv1394src->consecutive) < dv1394src->consecutive ) {
if( dv1394src->pool ) dv1394src->frame = gst_buffer_new_from_pool( dv1394src->pool, 0, dv1394src->frameSize );
dv1394src->bytesInFrame = 0;
}
}
if (dv1394src->frame != NULL) {
void *data = GST_BUFFER_DATA( dv1394src->frame );
switch (section_type) {
case 0: /* 1 Header block */
/* p[3] |= 0x80; // hack to force PAL data */
memcpy(data + dif_sequence * 150 * 80, p, 480);
break;
case 1: /* 2 Subcode blocks */
memcpy(data + dif_sequence * 150 * 80 + (1 + dif_block) * 80, p, 480);
break;
case 2: /* 3 VAUX blocks */
memcpy(data + dif_sequence * 150 * 80 + (3 + dif_block) * 80, p, 480);
break;
case 3: /* 9 Audio blocks interleaved with video */
memcpy(data + dif_sequence * 150 * 80 + (6 + dif_block * 16) * 80, p, 480);
break;
case 4: /* 135 Video blocks interleaved with audio */
memcpy(data + dif_sequence * 150 * 80 + (7 + (dif_block / 15) + dif_block) * 80, p, 480);
break;
default: /* we can<61>t handle any other data */
break;
}
dv1394src->bytesInFrame += 480;
}
}
return 0;
}
static
int gst_dv1394src_bus_reset(raw1394handle_t handle,
unsigned int generation) {
GST_INFO_OBJECT (GST_DV1394SRC(raw1394_get_userdata(handle)),"have bus reset");
return 0;
}
static GstBuffer *
gst_dv1394src_get (GstPad *pad)
{
GstDV1394Src *dv1394src = GST_DV1394SRC (GST_PAD_PARENT(pad));
dv1394src->buf = NULL;
while (dv1394src->buf == NULL)
raw1394_loop_iterate(dv1394src->handle);
return dv1394src->buf;
}
static GstElementStateReturn
gst_dv1394src_change_state (GstElement *element)
{
GstDV1394Src *dv1394src;
g_return_val_if_fail (GST_IS_DV1394SRC (element), GST_STATE_FAILURE);
dv1394src = GST_DV1394SRC (element);
switch (GST_STATE_TRANSITION (element)) {
case GST_STATE_NULL_TO_READY:
if ((dv1394src->handle = raw1394_new_handle()) == NULL) {
GST_INFO_OBJECT (dv1394src,"can't get raw1394 handle");
return GST_STATE_FAILURE;
}
raw1394_set_userdata(dv1394src->handle,dv1394src);
dv1394src->numcards = raw1394_get_port_info(dv1394src->handle,dv1394src->pinfo,16);
if (dv1394src->numcards == 0) {
GST_INFO_OBJECT (dv1394src,"no cards available for raw1394");
return GST_STATE_FAILURE;
}
if (dv1394src->pinfo[dv1394src->card].nodes <= 1) {
GST_INFO_OBJECT (dv1394src,"there are no nodes on the 1394 bus");
return GST_STATE_FAILURE;
}
if (raw1394_set_port(dv1394src->handle,dv1394src->port) < 0) {
GST_INFO_OBJECT (dv1394src,"can't set 1394 port %d",dv1394src->port);
return GST_STATE_FAILURE;
}
raw1394_set_iso_handler(dv1394src->handle,dv1394src->channel,gst_dv1394src_iso_receive);
raw1394_set_bus_reset_handler(dv1394src->handle,gst_dv1394src_bus_reset);
dv1394src->started = FALSE;
GST_DEBUG ("successfully opened up 1394 connection");
break;
case GST_STATE_PAUSED_TO_PLAYING:
if (raw1394_start_iso_rcv(dv1394src->handle,dv1394src->channel) < 0) {
GST_INFO_OBJECT (dv1394src,"can't start 1394 iso receive");
return GST_STATE_FAILURE;
}
break;
case GST_STATE_PLAYING_TO_PAUSED:
raw1394_stop_iso_rcv(dv1394src->handle, dv1394src->channel);
break;
case GST_STATE_READY_TO_NULL:
if (dv1394src->pool != NULL) {
gst_buffer_pool_unref(dv1394src->pool);
dv1394src->pool = NULL;
}
raw1394_destroy_handle(dv1394src->handle);
break;
default:
break;
}
/* if we haven't failed already, give the parent class a chance to ;-) */
if (GST_ELEMENT_CLASS (parent_class)->change_state)
return GST_ELEMENT_CLASS (parent_class)->change_state (element);
return GST_STATE_SUCCESS;
}
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