summaryrefslogtreecommitdiffstats
path: root/ext/raw1394
diff options
context:
space:
mode:
Diffstat (limited to 'ext/raw1394')
-rw-r--r--ext/raw1394/gst1394.c5
-rw-r--r--ext/raw1394/gstdv1394src.c177
-rw-r--r--ext/raw1394/gstdv1394src.h11
3 files changed, 172 insertions, 21 deletions
diff --git a/ext/raw1394/gst1394.c b/ext/raw1394/gst1394.c
index 9ad4ac79..e3302057 100644
--- a/ext/raw1394/gst1394.c
+++ b/ext/raw1394/gst1394.c
@@ -30,8 +30,9 @@ static GstElementDetails gst_dv1394src_details = {
"LGPL",
"Source for DV video data from firewire port",
VERSION,
- "Erik Walthinsen <omega@temple-baptist.com>",
- "(C) 2001",
+ "Erik Walthinsen <omega@temple-baptist.com>\n"
+ "Daniel Fischer <dan@f3c.com>",
+ "(C) 2001-2002",
};
diff --git a/ext/raw1394/gstdv1394src.c b/ext/raw1394/gstdv1394src.c
index a14cb707..8efefe2a 100644
--- a/ext/raw1394/gstdv1394src.c
+++ b/ext/raw1394/gstdv1394src.c
@@ -1,5 +1,6 @@
/* 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
@@ -18,8 +19,13 @@
*/
#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 {
@@ -28,7 +34,10 @@ enum {
};
enum {
- ARG_0
+ ARG_0,
+ ARG_CONSECUTIVE,
+ ARG_SKIP,
+ ARG_DROP_INCOMPLETE,
};
#if 0
@@ -42,12 +51,18 @@ gst_dv1394src_factory (void)
"src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
- gst_caps_new (
+ GST_CAPS_NEW (
"dv1394src",
"video/dv",
+/*
gst_props_new (
- "format", GST_PROPS_STRING ("NTSC"),
- NULL)),
+ "format", GST_PROPS_LIST (
+ GST_PROPS_STRING ("NTSC"),
+ GST_PROPS_STRING ("PAL")
+ ),
+ NULL)
+ ),
+*/
NULL);
}
return template;
@@ -96,6 +111,16 @@ gst_dv1394src_class_init (GstDV1394SrcClass *klass)
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;
@@ -114,6 +139,18 @@ gst_dv1394src_init (GstDV1394Src *dv1394src)
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
@@ -126,6 +163,15 @@ gst_dv1394src_set_property (GObject *object, guint prop_id, const GValue *value,
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;
}
@@ -141,6 +187,15 @@ gst_dv1394src_get_property (GObject *object, guint prop_id, GValue *value, GPara
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;
@@ -150,23 +205,103 @@ gst_dv1394src_get_property (GObject *object, guint prop_id, GValue *value, GPara
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));
- unsigned char *ptr = (unsigned char *)&data[3];
- GstBuffer *buf;
if (len > 16) {
-/*fprintf(stderr,"section_type %d, dif_sequence %d, dif_block %d\n",ptr[0] >> 5,ptr[1] >> 4,ptr[2]); */
-fprintf(stderr,".");
- if (((ptr[0] >> 5) == 0) &&
- ((ptr[1] >> 4) == 0) && (ptr[2] == 0)) dv1394src->started = TRUE;
- if (dv1394src->started) {
- buf = gst_buffer_new();
- GST_BUFFER_DATA(buf) = ptr;
- GST_BUFFER_SIZE(buf) = 480;
- GST_BUFFER_OFFSET(buf) = 0;
- GST_BUFFER_FLAG_SET(buf,GST_BUFFER_DONTFREE);
-
- dv1394src->buf = buf;
- }
+ /*
+ 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(0,"PAL data");
+ if (gst_pad_try_set_caps (dv1394src->srcpad,
+ GST_CAPS_NEW ( "dv1394src", "video/dv",
+ "format", GST_PROPS_STRING("PAL"),
+ NULL)
+ ) <= 0) {
+ GST_ERROR(GST_ELEMENT(dv1394src), "Could not set source caps for PAL");
+ return 0;
+ }
+ } else {
+ // NTSC (untested)
+ dv1394src->frameSize = NTSC_FRAMESIZE;
+ GST_DEBUG(0,"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_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_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_ELEMENT(GST_CAT_PLUGIN_INFO, 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 canīt handle any other data */
+ break;
+ }
+ dv1394src->bytesInFrame += 480;
+ }
}
return 0;
@@ -234,6 +369,10 @@ gst_dv1394src_change_state (GstElement *element)
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:
diff --git a/ext/raw1394/gstdv1394src.h b/ext/raw1394/gstdv1394src.h
index b9340337..8de7c54d 100644
--- a/ext/raw1394/gstdv1394src.h
+++ b/ext/raw1394/gstdv1394src.h
@@ -51,6 +51,11 @@ struct _GstDV1394Src {
GstPad *srcpad;
+ // consecutive=2, skip=4 will skip 4 frames, then let 2 consecutive ones thru
+ gint consecutive;
+ gint skip;
+ gboolean drop_incomplete;
+
int numcards,numports;
int card,port,channel;
@@ -59,6 +64,12 @@ struct _GstDV1394Src {
gboolean started;
GstBuffer *buf;
+
+ GstBuffer *frame;
+ guint frameSize;
+ guint bytesInFrame;
+ guint frameSequence;
+ GstBufferPool *pool;
};
struct _GstDV1394SrcClass {
generated by cgit (git 2.34.1) at 2024-06-27 23:39:59 +0000