1 /* GStreamer
2 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
3 * <2000> Daniel Fischer <dan@f3c.com>
4 * <2004> Wim Taymans <wim@fluendo.com>
5 * <2006> Zaheer Abbas Merali <zaheerabbas at merali dot org>
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the
19 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
20 * Boston, MA 02110-1301, USA.
21 */
22 /**
23 * SECTION:element-dv1394src
24 *
25 * Read DV (digital video) data from firewire port.
26 *
27 * <refsect2>
28 * <title>Example launch line</title>
29 * |[
30 * gst-launch-1.0 dv1394src ! queue ! dvdemux name=d ! queue ! dvdec ! xvimagesink d. ! queue ! alsasink
31 * ]| This pipeline captures from the firewire port and displays it (might need
32 * format converters for audio/video).
33 * </refsect2>
34 */
35
36 #ifdef HAVE_CONFIG_H
37 #include "config.h"
38 #endif
39 #include <unistd.h>
40 #include <poll.h>
41 #include <sys/socket.h>
42 #include <errno.h>
43 #include <fcntl.h>
44 #include <string.h>
45 #include <stdlib.h>
46
47 #include <libavc1394/avc1394.h>
48 #include <libavc1394/avc1394_vcr.h>
49 #include <libavc1394/rom1394.h>
50 #include <libraw1394/raw1394.h>
51 #ifdef HAVE_LIBIEC61883
52 #include <libiec61883/iec61883.h>
53 #endif
54
55 #include <gst/gst.h>
56
57 #include "gstdv1394src.h"
58 #include "gst1394probe.h"
59 #include "gst1394clock.h"
60
61
62 #define CONTROL_STOP 'S' /* stop the select call */
63 #define CONTROL_SOCKETS(src) src->control_sock
64 #define WRITE_SOCKET(src) src->control_sock[1]
65 #define READ_SOCKET(src) src->control_sock[0]
66
67 #define SEND_COMMAND(src, command) \
68 G_STMT_START { \
69 int G_GNUC_UNUSED _res; unsigned char c; c = command; \
70 _res = write (WRITE_SOCKET(src), &c, 1); \
71 } G_STMT_END
72
73 #define READ_COMMAND(src, command, res) \
74 G_STMT_START { \
75 res = read(READ_SOCKET(src), &command, 1); \
76 } G_STMT_END
77
78
79 GST_DEBUG_CATEGORY_STATIC (dv1394src_debug);
80 #define GST_CAT_DEFAULT (dv1394src_debug)
81
82 #define PAL_FRAMESIZE 144000
83 #define PAL_FRAMERATE 25
84
85 #define NTSC_FRAMESIZE 120000
86 #define NTSC_FRAMERATE 30
87
88 enum
89 {
90 SIGNAL_FRAME_DROPPED,
91 /* FILL ME */
92 LAST_SIGNAL
93 };
94
95 #define DEFAULT_PORT -1
96 #define DEFAULT_CHANNEL 63
97 #define DEFAULT_CONSECUTIVE 1
98 #define DEFAULT_SKIP 0
99 #define DEFAULT_DROP_INCOMPLETE TRUE
100 #define DEFAULT_USE_AVC TRUE
101 #define DEFAULT_GUID 0
102
103 enum
104 {
105 PROP_0,
106 PROP_PORT,
107 PROP_CHANNEL,
108 PROP_CONSECUTIVE,
109 PROP_SKIP,
110 PROP_DROP_INCOMPLETE,
111 PROP_USE_AVC,
112 PROP_GUID,
113 PROP_DEVICE_NAME
114 };
115
116 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
117 GST_PAD_SRC,
118 GST_PAD_ALWAYS,
119 GST_STATIC_CAPS ("video/x-dv, "
120 "format = (string) { NTSC, PAL }, " "systemstream = (boolean) true")
121 );
122
123 static void gst_dv1394src_uri_handler_init (gpointer g_iface,
124 gpointer iface_data);
125
126 static void gst_dv1394src_set_property (GObject * object, guint prop_id,
127 const GValue * value, GParamSpec * pspec);
128 static void gst_dv1394src_get_property (GObject * object, guint prop_id,
129 GValue * value, GParamSpec * pspec);
130 static void gst_dv1394src_dispose (GObject * object);
131
132 static GstClock *gst_dv1394src_provide_clock (GstElement * element);
133 static GstStateChangeReturn gst_dv1394_src_change_state (GstElement * element,
134 GstStateChange transition);
135
136 static gboolean gst_dv1394src_start (GstBaseSrc * bsrc);
137 static gboolean gst_dv1394src_stop (GstBaseSrc * bsrc);
138 static gboolean gst_dv1394src_unlock (GstBaseSrc * bsrc);
139
140 static GstFlowReturn gst_dv1394src_create (GstPushSrc * psrc, GstBuffer ** buf);
141
142 static gboolean gst_dv1394src_query (GstBaseSrc * src, GstQuery * query);
143 static void gst_dv1394src_update_device_name (GstDV1394Src * src);
144
145 #define gst_dv1394src_parent_class parent_class
146 G_DEFINE_TYPE_WITH_CODE (GstDV1394Src, gst_dv1394src, GST_TYPE_PUSH_SRC,
147 G_IMPLEMENT_INTERFACE (GST_TYPE_URI_HANDLER,
148 gst_dv1394src_uri_handler_init));
149
150 static guint gst_dv1394src_signals[LAST_SIGNAL] = { 0 };
151
152 static void
gst_dv1394src_class_init(GstDV1394SrcClass * klass)153 gst_dv1394src_class_init (GstDV1394SrcClass * klass)
154 {
155 GObjectClass *gobject_class;
156 GstElementClass *gstelement_class;
157 GstBaseSrcClass *gstbasesrc_class;
158 GstPushSrcClass *gstpushsrc_class;
159
160 gobject_class = (GObjectClass *) klass;
161 gstelement_class = (GstElementClass *) klass;
162 gstbasesrc_class = (GstBaseSrcClass *) klass;
163 gstpushsrc_class = (GstPushSrcClass *) klass;
164
165 gobject_class->set_property = gst_dv1394src_set_property;
166 gobject_class->get_property = gst_dv1394src_get_property;
167 gobject_class->dispose = gst_dv1394src_dispose;
168
169 gstelement_class->provide_clock = gst_dv1394src_provide_clock;
170 gstelement_class->change_state = gst_dv1394_src_change_state;
171
172 gst_dv1394src_signals[SIGNAL_FRAME_DROPPED] =
173 g_signal_new ("frame-dropped", G_TYPE_FROM_CLASS (klass),
174 G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (GstDV1394SrcClass, frame_dropped),
175 NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
176
177 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_PORT,
178 g_param_spec_int ("port", "Port", "Port number (-1 automatic)",
179 -1, 16, DEFAULT_PORT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
180 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CHANNEL,
181 g_param_spec_int ("channel", "Channel", "Channel number for listening",
182 0, 64, DEFAULT_CHANNEL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
183 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_CONSECUTIVE,
184 g_param_spec_int ("consecutive", "consecutive frames",
185 "send n consecutive frames after skipping", 1, G_MAXINT,
186 DEFAULT_CONSECUTIVE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
187 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_SKIP,
188 g_param_spec_int ("skip", "skip frames", "skip n frames",
189 0, G_MAXINT, DEFAULT_SKIP,
190 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
191 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DROP_INCOMPLETE,
192 g_param_spec_boolean ("drop-incomplete", "drop incomplete",
193 "drop incomplete frames", DEFAULT_DROP_INCOMPLETE,
194 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
195 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_USE_AVC,
196 g_param_spec_boolean ("use-avc", "Use AV/C", "Use AV/C VTR control",
197 DEFAULT_USE_AVC, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
198 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_GUID,
199 g_param_spec_uint64 ("guid", "GUID",
200 "select one of multiple DV devices by its GUID. use a hexadecimal "
201 "like 0xhhhhhhhhhhhhhhhh. (0 = no guid)", 0, G_MAXUINT64,
202 DEFAULT_GUID, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
203 /**
204 * GstDV1394Src:device-name:
205 *
206 * Descriptive name of the currently opened device
207 */
208 g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_DEVICE_NAME,
209 g_param_spec_string ("device-name", "device name",
210 "user-friendly name of the device", "Default",
211 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
212
213 gstbasesrc_class->negotiate = NULL;
214 gstbasesrc_class->start = gst_dv1394src_start;
215 gstbasesrc_class->stop = gst_dv1394src_stop;
216 gstbasesrc_class->unlock = gst_dv1394src_unlock;
217 gstbasesrc_class->query = gst_dv1394src_query;
218
219 gstpushsrc_class->create = gst_dv1394src_create;
220
221 gst_element_class_add_static_pad_template (gstelement_class, &src_factory);
222
223 gst_element_class_set_static_metadata (gstelement_class,
224 "Firewire (1394) DV video source", "Source/Video",
225 "Source for DV video data from firewire port",
226 "Erik Walthinsen <omega@temple-baptist.com>, "
227 "Daniel Fischer <dan@f3c.com>, " "Wim Taymans <wim@fluendo.com>, "
228 "Zaheer Abbas Merali <zaheerabbas at merali dot org>");
229
230 GST_DEBUG_CATEGORY_INIT (dv1394src_debug, "dv1394src", 0,
231 "DV firewire source");
232 }
233
234 static void
gst_dv1394src_init(GstDV1394Src * dv1394src)235 gst_dv1394src_init (GstDV1394Src * dv1394src)
236 {
237 GstPad *srcpad = GST_BASE_SRC_PAD (dv1394src);
238
239 gst_base_src_set_live (GST_BASE_SRC (dv1394src), TRUE);
240 gst_base_src_set_format (GST_BASE_SRC (dv1394src), GST_FORMAT_TIME);
241 gst_base_src_set_do_timestamp (GST_BASE_SRC (dv1394src), TRUE);
242 gst_pad_use_fixed_caps (srcpad);
243
244 dv1394src->port = DEFAULT_PORT;
245 dv1394src->channel = DEFAULT_CHANNEL;
246
247 dv1394src->consecutive = DEFAULT_CONSECUTIVE;
248 dv1394src->skip = DEFAULT_SKIP;
249 dv1394src->drop_incomplete = DEFAULT_DROP_INCOMPLETE;
250 dv1394src->use_avc = DEFAULT_USE_AVC;
251 dv1394src->guid = DEFAULT_GUID;
252 dv1394src->uri = g_strdup_printf ("dv://%d", dv1394src->port);
253 dv1394src->device_name = g_strdup_printf ("Default");
254
255 READ_SOCKET (dv1394src) = -1;
256 WRITE_SOCKET (dv1394src) = -1;
257
258 /* initialized when first header received */
259 dv1394src->frame_size = 0;
260
261 dv1394src->buf = NULL;
262 dv1394src->frame = NULL;
263 dv1394src->frame_sequence = 0;
264
265 dv1394src->provided_clock = gst_1394_clock_new ("dv1394clock");
266 }
267
268 static void
gst_dv1394src_dispose(GObject * object)269 gst_dv1394src_dispose (GObject * object)
270 {
271 GstDV1394Src *src = GST_DV1394SRC (object);
272
273 if (src->provided_clock) {
274 g_object_unref (src->provided_clock);
275 }
276
277 g_free (src->uri);
278 src->uri = NULL;
279
280 g_free (src->device_name);
281 src->device_name = NULL;
282
283 G_OBJECT_CLASS (parent_class)->dispose (object);
284 }
285
286 static void
gst_dv1394src_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)287 gst_dv1394src_set_property (GObject * object, guint prop_id,
288 const GValue * value, GParamSpec * pspec)
289 {
290 GstDV1394Src *filter = GST_DV1394SRC (object);
291
292 switch (prop_id) {
293 case PROP_PORT:
294 filter->port = g_value_get_int (value);
295 g_free (filter->uri);
296 filter->uri = g_strdup_printf ("dv://%d", filter->port);
297 break;
298 case PROP_CHANNEL:
299 filter->channel = g_value_get_int (value);
300 break;
301 case PROP_SKIP:
302 filter->skip = g_value_get_int (value);
303 break;
304 case PROP_CONSECUTIVE:
305 filter->consecutive = g_value_get_int (value);
306 break;
307 case PROP_DROP_INCOMPLETE:
308 filter->drop_incomplete = g_value_get_boolean (value);
309 break;
310 case PROP_USE_AVC:
311 filter->use_avc = g_value_get_boolean (value);
312 break;
313 case PROP_GUID:
314 filter->guid = g_value_get_uint64 (value);
315 gst_dv1394src_update_device_name (filter);
316 break;
317 default:
318 break;
319 }
320 }
321
322 static void
gst_dv1394src_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)323 gst_dv1394src_get_property (GObject * object, guint prop_id, GValue * value,
324 GParamSpec * pspec)
325 {
326 GstDV1394Src *filter = GST_DV1394SRC (object);
327
328 switch (prop_id) {
329 case PROP_PORT:
330 g_value_set_int (value, filter->port);
331 break;
332 case PROP_CHANNEL:
333 g_value_set_int (value, filter->channel);
334 break;
335 case PROP_SKIP:
336 g_value_set_int (value, filter->skip);
337 break;
338 case PROP_CONSECUTIVE:
339 g_value_set_int (value, filter->consecutive);
340 break;
341 case PROP_DROP_INCOMPLETE:
342 g_value_set_boolean (value, filter->drop_incomplete);
343 break;
344 case PROP_USE_AVC:
345 g_value_set_boolean (value, filter->use_avc);
346 break;
347 case PROP_GUID:
348 g_value_set_uint64 (value, filter->guid);
349 break;
350 case PROP_DEVICE_NAME:
351 g_value_set_string (value, filter->device_name);
352 break;
353 default:
354 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
355 break;
356 }
357 }
358
359 static GstClock *
gst_dv1394src_provide_clock(GstElement * element)360 gst_dv1394src_provide_clock (GstElement * element)
361 {
362 GstDV1394Src *dv1394src = GST_DV1394SRC (element);
363
364 return GST_CLOCK_CAST (gst_object_ref (dv1394src->provided_clock));
365 }
366
367 static GstStateChangeReturn
gst_dv1394_src_change_state(GstElement * element,GstStateChange transition)368 gst_dv1394_src_change_state (GstElement * element, GstStateChange transition)
369 {
370 GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
371 GstDV1394Src *src = GST_DV1394SRC (element);
372
373 switch (transition) {
374 case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
375 gst_element_post_message (element,
376 gst_message_new_clock_lost (GST_OBJECT_CAST (element),
377 GST_CLOCK_CAST (src->provided_clock)));
378 break;
379 default:
380 break;
381 }
382
383 ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
384 if (ret == GST_STATE_CHANGE_FAILURE)
385 return ret;
386
387 switch (transition) {
388 case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
389 gst_element_post_message (element,
390 gst_message_new_clock_provide (GST_OBJECT_CAST (element),
391 GST_CLOCK_CAST (src->provided_clock), TRUE));
392 break;
393 default:
394 break;
395 }
396
397 return ret;
398 }
399
400 #ifdef HAVE_LIBIEC61883
401 static GstDV1394Src *
gst_dv1394src_from_raw1394handle(raw1394handle_t handle)402 gst_dv1394src_from_raw1394handle (raw1394handle_t handle)
403 {
404 iec61883_dv_t dv = (iec61883_dv_t) raw1394_get_userdata (handle);
405 iec61883_dv_fb_t dv_fb =
406 (iec61883_dv_fb_t) iec61883_dv_get_callback_data (dv);
407 return GST_DV1394SRC (iec61883_dv_fb_get_callback_data (dv_fb));
408 }
409 #else /* HAVE_LIBIEC61883 */
410 static GstDV1394Src *
gst_dv1394src_from_raw1394handle(raw1394handle_t handle)411 gst_dv1394src_from_raw1394handle (raw1394handle_t handle)
412 {
413 return GST_DV1394SRC (raw1394_get_userdata (handle));
414 }
415 #endif /* HAVE_LIBIEC61883 */
416
417 #ifdef HAVE_LIBIEC61883
418 static int
gst_dv1394src_iec61883_receive(unsigned char * data,int len,int complete,void * cbdata)419 gst_dv1394src_iec61883_receive (unsigned char *data, int len,
420 int complete, void *cbdata)
421 {
422 GstDV1394Src *dv1394src = GST_DV1394SRC (cbdata);
423
424 if (G_UNLIKELY (!gst_pad_has_current_caps (GST_BASE_SRC_PAD (dv1394src)))) {
425 GstCaps *caps;
426 unsigned char *p = data;
427
428 // figure format (NTSC/PAL)
429 if (p[3] & 0x80) {
430 // PAL
431 dv1394src->frame_size = PAL_FRAMESIZE;
432 dv1394src->frame_rate = PAL_FRAMERATE;
433 GST_DEBUG ("PAL data");
434 caps = gst_caps_new_simple ("video/x-dv",
435 "format", G_TYPE_STRING, "PAL",
436 "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
437 } else {
438 // NTSC (untested)
439 dv1394src->frame_size = NTSC_FRAMESIZE;
440 dv1394src->frame_rate = NTSC_FRAMERATE;
441 GST_DEBUG
442 ("NTSC data [untested] - please report success/failure to <dan@f3c.com>");
443 caps = gst_caps_new_simple ("video/x-dv",
444 "format", G_TYPE_STRING, "NTSC",
445 "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
446 }
447 gst_pad_set_caps (GST_BASE_SRC_PAD (dv1394src), caps);
448 gst_caps_unref (caps);
449 }
450
451 dv1394src->frame = NULL;
452 if (G_LIKELY ((dv1394src->frame_sequence + 1) % (dv1394src->skip +
453 dv1394src->consecutive) < dv1394src->consecutive)) {
454 if (complete && len == dv1394src->frame_size) {
455 GstBuffer *buf;
456
457 buf = gst_buffer_new_and_alloc (dv1394src->frame_size);
458
459 GST_BUFFER_OFFSET (buf) = dv1394src->frame_sequence;
460 gst_buffer_fill (buf, 0, data, len);
461 dv1394src->buf = buf;
462 }
463 }
464 dv1394src->frame_sequence++;
465 return 0;
466 }
467
468 #else
469 static int
gst_dv1394src_iso_receive(raw1394handle_t handle,int channel,size_t len,quadlet_t * data)470 gst_dv1394src_iso_receive (raw1394handle_t handle, int channel, size_t len,
471 quadlet_t * data)
472 {
473 GstDV1394Src *dv1394src = gst_dv1394src_from_raw1394handle (handle);
474
475 if (len > 16) {
476 /*
477 the following code taken from kino-0.51 (Dan Dennedy/Charles Yates)
478 Kindly relicensed under the LGPL. See the commit log for version 1.6 of
479 this file in CVS.
480 */
481 unsigned char *p = (unsigned char *) &data[3];
482
483 int section_type = p[0] >> 5; /* section type is in bits 5 - 7 */
484 int dif_sequence = p[1] >> 4; /* dif sequence number is in bits 4 - 7 */
485 int dif_block = p[2];
486
487 /* if we are at the beginning of a frame,
488 we set buf=frame, and alloc a new buffer for frame
489 */
490 if (section_type == 0 && dif_sequence == 0) { // dif header
491 if (!GST_PAD_CAPS (GST_BASE_SRC_PAD (dv1394src))) {
492 GstCaps *caps;
493
494 // figure format (NTSC/PAL)
495 if (p[3] & 0x80) {
496 // PAL
497 dv1394src->frame_size = PAL_FRAMESIZE;
498 dv1394src->frame_rate = PAL_FRAMERATE;
499 GST_DEBUG ("PAL data");
500 caps = gst_caps_new_simple ("video/x-dv",
501 "format", G_TYPE_STRING, "PAL",
502 "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
503 } else {
504 // NTSC (untested)
505 dv1394src->frame_size = NTSC_FRAMESIZE;
506 dv1394src->frame_rate = NTSC_FRAMERATE;
507 GST_DEBUG
508 ("NTSC data [untested] - please report success/failure to <dan@f3c.com>");
509 caps = gst_caps_new_simple ("video/x-dv",
510 "format", G_TYPE_STRING, "NTSC",
511 "systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
512 }
513 gst_pad_set_caps (GST_BASE_SRC_PAD (dv1394src), caps);
514 gst_caps_unref (caps);
515 }
516 // drop last frame when not complete
517 if (!dv1394src->drop_incomplete
518 || dv1394src->bytes_in_frame == dv1394src->frame_size) {
519 dv1394src->buf = dv1394src->frame;
520 } else {
521 GST_INFO_OBJECT (GST_ELEMENT (dv1394src), "incomplete frame dropped");
522 g_signal_emit (G_OBJECT (dv1394src),
523 gst_dv1394src_signals[SIGNAL_FRAME_DROPPED], 0);
524 if (dv1394src->frame) {
525 gst_buffer_unref (dv1394src->frame);
526 }
527 }
528 if ((dv1394src->frame_sequence + 1) % (dv1394src->skip +
529 dv1394src->consecutive) < dv1394src->consecutive) {
530 GstBuffer *buf;
531 gint64 i64;
532
533 buf = gst_buffer_new_and_alloc (dv1394src->frame_size);
534
535 /* fill in offset, duration, timestamp */
536 GST_BUFFER_OFFSET (buf) = dv1394src->frame_sequence;
537 dv1394src->frame = buf;
538 }
539 dv1394src->frame_sequence++;
540 dv1394src->bytes_in_frame = 0;
541 }
542
543 if (dv1394src->frame != NULL) {
544 guint8 *data = GST_BUFFER_DATA (dv1394src->frame);
545
546 switch (section_type) {
547 case 0: /* 1 Header block */
548 /* p[3] |= 0x80; // hack to force PAL data */
549 memcpy (data + dif_sequence * 150 * 80, p, 480);
550 break;
551
552 case 1: /* 2 Subcode blocks */
553 memcpy (data + dif_sequence * 150 * 80 + (1 + dif_block) * 80, p,
554 480);
555 break;
556
557 case 2: /* 3 VAUX blocks */
558 memcpy (data + dif_sequence * 150 * 80 + (3 + dif_block) * 80, p,
559 480);
560 break;
561
562 case 3: /* 9 Audio blocks interleaved with video */
563 memcpy (data + dif_sequence * 150 * 80 + (6 + dif_block * 16) * 80, p,
564 480);
565 break;
566
567 case 4: /* 135 Video blocks interleaved with audio */
568 memcpy (data + dif_sequence * 150 * 80 + (7 + (dif_block / 15) +
569 dif_block) * 80, p, 480);
570 break;
571
572 default: /* we can't handle any other data */
573 break;
574 }
575 dv1394src->bytes_in_frame += 480;
576 }
577 }
578
579 return 0;
580 }
581 #endif
582 /*
583 * When an ieee1394 bus reset happens, usually a device has been removed
584 * or added. We send a message on the message bus with the node count
585 * and whether the capture device used in this element connected, disconnected
586 * or was unchanged
587 * Message structure:
588 * nodecount - integer with number of nodes on bus
589 * current-device-change - integer (1 if device connected, 0 if no change to
590 * current device status, -1 if device disconnected)
591 */
592 static int
gst_dv1394src_bus_reset(raw1394handle_t handle,unsigned int generation)593 gst_dv1394src_bus_reset (raw1394handle_t handle, unsigned int generation)
594 {
595 GstDV1394Src *src;
596 gint nodecount;
597 GstMessage *message;
598 GstStructure *structure;
599 gint current_device_change;
600 gint i;
601
602 src = gst_dv1394src_from_raw1394handle (handle);
603
604 GST_INFO_OBJECT (src, "have bus reset");
605
606 /* update generation - told to do so by docs */
607 raw1394_update_generation (handle, generation);
608 nodecount = raw1394_get_nodecount (handle);
609 /* allocate memory for portinfo */
610
611 /* current_device_change is -1 if camera disconnected, 0 if other device
612 * connected or 1 if camera has now connected */
613 current_device_change = -1;
614 for (i = 0; i < nodecount; i++) {
615 if (src->guid == rom1394_get_guid (handle, i)) {
616 /* Camera is with us */
617 GST_DEBUG ("Camera is with us");
618 if (!src->connected) {
619 current_device_change = 1;
620 src->connected = TRUE;
621 } else
622 current_device_change = 0;
623 }
624 }
625 if (src->connected && current_device_change == -1) {
626 GST_DEBUG ("Camera has disconnected");
627 src->connected = FALSE;
628 } else if (!src->connected && current_device_change == -1) {
629 GST_DEBUG ("Camera is still not with us");
630 current_device_change = 0;
631 }
632
633 structure = gst_structure_new ("ieee1394-bus-reset", "nodecount", G_TYPE_INT,
634 nodecount, "current-device-change", G_TYPE_INT, current_device_change,
635 NULL);
636 message = gst_message_new_element (GST_OBJECT (src), structure);
637 gst_element_post_message (GST_ELEMENT (src), message);
638
639 return 0;
640 }
641
642 static GstFlowReturn
gst_dv1394src_create(GstPushSrc * psrc,GstBuffer ** buf)643 gst_dv1394src_create (GstPushSrc * psrc, GstBuffer ** buf)
644 {
645 GstDV1394Src *dv1394src = GST_DV1394SRC (psrc);
646 struct pollfd pollfds[2];
647
648 pollfds[0].fd = raw1394_get_fd (dv1394src->handle);
649 pollfds[0].events = POLLIN | POLLERR | POLLHUP | POLLPRI;
650 pollfds[1].fd = READ_SOCKET (dv1394src);
651 pollfds[1].events = POLLIN | POLLERR | POLLHUP | POLLPRI;
652
653 if (G_UNLIKELY (dv1394src->buf)) {
654 /* maybe we had an error before, and there's a stale buffer? */
655 gst_buffer_unref (dv1394src->buf);
656 dv1394src->buf = NULL;
657 }
658
659 while (TRUE) {
660 int res = poll (pollfds, 2, -1);
661
662 if (G_UNLIKELY (res < 0)) {
663 if (errno == EAGAIN || errno == EINTR)
664 continue;
665 else
666 goto error_while_polling;
667 }
668
669 if (G_UNLIKELY (pollfds[1].revents)) {
670 char command;
671
672 if (pollfds[1].revents & POLLIN)
673 READ_COMMAND (dv1394src, command, res);
674
675 goto told_to_stop;
676 } else if (G_LIKELY (pollfds[0].revents & POLLIN)) {
677 /* shouldn't block in theory */
678 raw1394_loop_iterate (dv1394src->handle);
679
680 if (dv1394src->buf)
681 break;
682 }
683 }
684
685 g_assert (dv1394src->buf);
686
687 *buf = dv1394src->buf;
688 dv1394src->buf = NULL;
689 return GST_FLOW_OK;
690
691 error_while_polling:
692 {
693 GST_ELEMENT_ERROR (dv1394src, RESOURCE, READ, (NULL), GST_ERROR_SYSTEM);
694 return GST_FLOW_EOS;
695 }
696 told_to_stop:
697 {
698 GST_DEBUG_OBJECT (dv1394src, "told to stop, shutting down");
699 return GST_FLOW_FLUSHING;
700 }
701 }
702
703 static int
gst_dv1394src_discover_avc_node(GstDV1394Src * src)704 gst_dv1394src_discover_avc_node (GstDV1394Src * src)
705 {
706 int node = -1;
707 int i, j = 0;
708 int m = src->num_ports;
709
710 if (src->port >= 0) {
711 /* search on explicit port */
712 j = src->port;
713 m = j + 1;
714 }
715
716 /* loop over all our ports */
717 for (; j < m && node == -1; j++) {
718 raw1394handle_t handle;
719 struct raw1394_portinfo pinf[16];
720
721 /* open the port */
722 handle = raw1394_new_handle ();
723 if (!handle) {
724 GST_WARNING ("raw1394 - failed to get handle: %s.\n", strerror (errno));
725 continue;
726 }
727 if (raw1394_get_port_info (handle, pinf, 16) < 0) {
728 GST_WARNING ("raw1394 - failed to get port info: %s.\n",
729 strerror (errno));
730 goto next;
731 }
732
733 /* tell raw1394 which host adapter to use */
734 if (raw1394_set_port (handle, j) < 0) {
735 GST_WARNING ("raw1394 - failed to set set port: %s.\n", strerror (errno));
736 goto next;
737 }
738
739 /* now loop over all the nodes */
740 for (i = 0; i < raw1394_get_nodecount (handle); i++) {
741 /* are we looking for an explicit GUID ? */
742 if (src->guid != 0) {
743 if (src->guid == rom1394_get_guid (handle, i)) {
744 node = i;
745 src->port = j;
746 g_free (src->uri);
747 src->uri = g_strdup_printf ("dv://%d", src->port);
748 break;
749 }
750 } else {
751 rom1394_directory rom_dir;
752
753 /* select first AV/C Tape Recorder Player node */
754 if (rom1394_get_directory (handle, i, &rom_dir) < 0) {
755 GST_WARNING ("error reading config rom directory for node %d\n", i);
756 continue;
757 }
758 if ((rom1394_get_node_type (&rom_dir) == ROM1394_NODE_TYPE_AVC) &&
759 avc1394_check_subunit_type (handle, i, AVC1394_SUBUNIT_TYPE_VCR)) {
760 node = i;
761 src->port = j;
762 src->guid = rom1394_get_guid (handle, i);
763 g_free (src->uri);
764 src->uri = g_strdup_printf ("dv://%d", src->port);
765 g_free (src->device_name);
766 src->device_name = g_strdup (rom_dir.label);
767 break;
768 }
769 rom1394_free_directory (&rom_dir);
770 }
771 }
772 next:
773 raw1394_destroy_handle (handle);
774 }
775 return node;
776 }
777
778 static gboolean
gst_dv1394src_start(GstBaseSrc * bsrc)779 gst_dv1394src_start (GstBaseSrc * bsrc)
780 {
781 GstDV1394Src *src = GST_DV1394SRC (bsrc);
782 int control_sock[2];
783
784 src->connected = FALSE;
785
786 if (socketpair (PF_UNIX, SOCK_STREAM, 0, control_sock) < 0)
787 goto socket_pair;
788
789 READ_SOCKET (src) = control_sock[0];
790 WRITE_SOCKET (src) = control_sock[1];
791
792 if (fcntl (READ_SOCKET (src), F_SETFL, O_NONBLOCK) < 0)
793 GST_ERROR_OBJECT (src, "failed to make read socket non-blocking: %s",
794 g_strerror (errno));
795 if (fcntl (WRITE_SOCKET (src), F_SETFL, O_NONBLOCK) < 0)
796 GST_ERROR_OBJECT (src, "failed to make write socket non-blocking: %s",
797 g_strerror (errno));
798
799 src->handle = raw1394_new_handle ();
800
801 if (!src->handle) {
802 if (errno == EACCES)
803 goto permission_denied;
804 else if (errno == ENOENT)
805 goto not_found;
806 else
807 goto no_handle;
808 }
809
810 src->num_ports = raw1394_get_port_info (src->handle, src->pinfo, 16);
811
812 if (src->num_ports == 0)
813 goto no_ports;
814
815 if (src->use_avc || src->port == -1)
816 src->avc_node = gst_dv1394src_discover_avc_node (src);
817
818 /* lets destroy handle and create one on port
819 this is more reliable than setting port on
820 the existing handle */
821 raw1394_destroy_handle (src->handle);
822 src->handle = raw1394_new_handle_on_port (src->port);
823 if (!src->handle)
824 goto cannot_set_port;
825
826 raw1394_set_userdata (src->handle, src);
827 raw1394_set_bus_reset_handler (src->handle, gst_dv1394src_bus_reset);
828
829 #ifdef HAVE_LIBIEC61883
830 if ((src->iec61883dv =
831 iec61883_dv_fb_init (src->handle,
832 gst_dv1394src_iec61883_receive, src)) == NULL)
833 goto cannot_initialise_dv;
834
835 #else
836 raw1394_set_iso_handler (src->handle, src->channel,
837 gst_dv1394src_iso_receive);
838 #endif
839
840 GST_DEBUG_OBJECT (src, "successfully opened up 1394 connection");
841 src->connected = TRUE;
842
843 #ifdef HAVE_LIBIEC61883
844 if (iec61883_dv_fb_start (src->iec61883dv, src->channel) != 0)
845 goto cannot_start;
846 #else
847 if (raw1394_start_iso_rcv (src->handle, src->channel) < 0)
848 goto cannot_start;
849 #endif
850
851 if (src->use_avc) {
852 raw1394handle_t avc_handle = raw1394_new_handle_on_port (src->port);
853
854 /* start the VCR */
855 if (avc_handle) {
856 if (!avc1394_vcr_is_recording (avc_handle, src->avc_node)
857 && avc1394_vcr_is_playing (avc_handle, src->avc_node)
858 != AVC1394_VCR_OPERAND_PLAY_FORWARD)
859 avc1394_vcr_play (avc_handle, src->avc_node);
860 raw1394_destroy_handle (avc_handle);
861 } else {
862 GST_WARNING_OBJECT (src, "Starting VCR via avc1394 failed: %s",
863 g_strerror (errno));
864 }
865 }
866
867 gst_1394_clock_set_handle (src->provided_clock, src->handle);
868
869 return TRUE;
870
871 socket_pair:
872 {
873 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ_WRITE, (NULL),
874 GST_ERROR_SYSTEM);
875 return FALSE;
876 }
877 permission_denied:
878 {
879 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL), GST_ERROR_SYSTEM);
880 return FALSE;
881 }
882 not_found:
883 {
884 GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL), GST_ERROR_SYSTEM);
885 return FALSE;
886 }
887 no_handle:
888 {
889 GST_ELEMENT_ERROR (src, RESOURCE, OPEN_READ, (NULL),
890 ("can't get raw1394 handle (%s)", g_strerror (errno)));
891 return FALSE;
892 }
893 no_ports:
894 {
895 raw1394_destroy_handle (src->handle);
896 src->handle = NULL;
897 GST_ELEMENT_ERROR (src, RESOURCE, NOT_FOUND, (NULL),
898 ("no ports available for raw1394"));
899 return FALSE;
900 }
901 cannot_set_port:
902 {
903 GST_ELEMENT_ERROR (src, RESOURCE, SETTINGS, (NULL),
904 ("can't set 1394 port %d", src->port));
905 return FALSE;
906 }
907 cannot_start:
908 {
909 raw1394_destroy_handle (src->handle);
910 src->handle = NULL;
911 #ifdef HAVE_LIBIEC61883
912 iec61883_dv_fb_close (src->iec61883dv);
913 src->iec61883dv = NULL;
914 #endif
915 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
916 ("can't start 1394 iso receive"));
917 return FALSE;
918 }
919 #ifdef HAVE_LIBIEC61883
920 cannot_initialise_dv:
921 {
922 raw1394_destroy_handle (src->handle);
923 src->handle = NULL;
924 GST_ELEMENT_ERROR (src, RESOURCE, READ, (NULL),
925 ("can't initialise iec61883 dv"));
926 return FALSE;
927 }
928 #endif
929 }
930
931 static gboolean
gst_dv1394src_stop(GstBaseSrc * bsrc)932 gst_dv1394src_stop (GstBaseSrc * bsrc)
933 {
934 GstDV1394Src *src = GST_DV1394SRC (bsrc);
935
936 close (READ_SOCKET (src));
937 close (WRITE_SOCKET (src));
938 READ_SOCKET (src) = -1;
939 WRITE_SOCKET (src) = -1;
940 #ifdef HAVE_LIBIEC61883
941 iec61883_dv_fb_close (src->iec61883dv);
942 #else
943 raw1394_stop_iso_rcv (src->handle, src->channel);
944 #endif
945
946 if (src->use_avc) {
947 raw1394handle_t avc_handle = raw1394_new_handle_on_port (src->port);
948
949 /* pause and stop the VCR */
950 if (avc_handle) {
951 if (!avc1394_vcr_is_recording (avc_handle, src->avc_node)
952 && (avc1394_vcr_is_playing (avc_handle, src->avc_node)
953 != AVC1394_VCR_OPERAND_PLAY_FORWARD_PAUSE))
954 avc1394_vcr_pause (avc_handle, src->avc_node);
955 avc1394_vcr_stop (avc_handle, src->avc_node);
956 raw1394_destroy_handle (avc_handle);
957 } else {
958 GST_WARNING_OBJECT (src, "Starting VCR via avc1394 failed: %s",
959 g_strerror (errno));
960 }
961 }
962
963 gst_1394_clock_unset_handle (src->provided_clock);
964
965 raw1394_destroy_handle (src->handle);
966
967 return TRUE;
968 }
969
970 static gboolean
gst_dv1394src_unlock(GstBaseSrc * bsrc)971 gst_dv1394src_unlock (GstBaseSrc * bsrc)
972 {
973 GstDV1394Src *src = GST_DV1394SRC (bsrc);
974
975 SEND_COMMAND (src, CONTROL_STOP);
976
977 return TRUE;
978 }
979
980 static gboolean
gst_dv1394src_query(GstBaseSrc * basesrc,GstQuery * query)981 gst_dv1394src_query (GstBaseSrc * basesrc, GstQuery * query)
982 {
983 switch (GST_QUERY_TYPE (query)) {
984 case GST_QUERY_LATENCY:
985 {
986 gst_query_set_latency (query, TRUE, GST_SECOND / 25, GST_SECOND / 25);
987 }
988 break;
989 default:
990 goto not_supported;
991 }
992
993 return TRUE;
994
995 not_supported:
996 return GST_BASE_SRC_CLASS (parent_class)->query (basesrc, query);
997 }
998
999 static void
gst_dv1394src_update_device_name(GstDV1394Src * src)1000 gst_dv1394src_update_device_name (GstDV1394Src * src)
1001 {
1002 raw1394handle_t handle;
1003 gint portcount, port, nodecount, node;
1004 rom1394_directory directory;
1005
1006 g_free (src->device_name);
1007 src->device_name = NULL;
1008
1009 GST_LOG_OBJECT (src, "updating device name for current GUID");
1010
1011 handle = raw1394_new_handle ();
1012
1013 if (handle == NULL)
1014 goto gethandle_failed;
1015
1016 portcount = raw1394_get_port_info (handle, NULL, 0);
1017 for (port = 0; port < portcount; port++) {
1018 if (raw1394_set_port (handle, port) >= 0) {
1019 nodecount = raw1394_get_nodecount (handle);
1020 for (node = 0; node < nodecount; node++) {
1021 if (src->guid == rom1394_get_guid (handle, node)) {
1022 if (rom1394_get_directory (handle, node, &directory) >= 0) {
1023 g_free (src->device_name);
1024 src->device_name = g_strdup (directory.label);
1025 rom1394_free_directory (&directory);
1026 goto done;
1027 } else {
1028 GST_WARNING ("error reading rom directory for node %d", node);
1029 }
1030 }
1031 }
1032 }
1033 }
1034
1035 src->device_name = g_strdup ("Unknown"); /* FIXME: translate? */
1036
1037 done:
1038
1039 raw1394_destroy_handle (handle);
1040 return;
1041
1042 /* ERRORS */
1043 gethandle_failed:
1044 {
1045 GST_WARNING ("failed to get raw1394 handle: %s", g_strerror (errno));
1046 src->device_name = g_strdup ("Unknown"); /* FIXME: translate? */
1047 return;
1048 }
1049 }
1050
1051 /*** GSTURIHANDLER INTERFACE *************************************************/
1052
1053 static GstURIType
gst_dv1394src_uri_get_type(GType type)1054 gst_dv1394src_uri_get_type (GType type)
1055 {
1056 return GST_URI_SRC;
1057 }
1058
1059 static const gchar *const *
gst_dv1394src_uri_get_protocols(GType type)1060 gst_dv1394src_uri_get_protocols (GType type)
1061 {
1062 static const gchar *protocols[] = { (char *) "dv", NULL };
1063
1064 return protocols;
1065 }
1066
1067 static gchar *
gst_dv1394src_uri_get_uri(GstURIHandler * handler)1068 gst_dv1394src_uri_get_uri (GstURIHandler * handler)
1069 {
1070 GstDV1394Src *gst_dv1394src = GST_DV1394SRC (handler);
1071
1072 return gst_dv1394src->uri;
1073 }
1074
1075 static gboolean
gst_dv1394src_uri_set_uri(GstURIHandler * handler,const gchar * uri,GError ** error)1076 gst_dv1394src_uri_set_uri (GstURIHandler * handler, const gchar * uri,
1077 GError ** error)
1078 {
1079 gchar *protocol, *location;
1080 gboolean ret = TRUE;
1081 GstDV1394Src *gst_dv1394src = GST_DV1394SRC (handler);
1082
1083 protocol = gst_uri_get_protocol (uri);
1084 if (strcmp (protocol, "dv") != 0) {
1085 g_free (protocol);
1086 g_set_error (error, GST_URI_ERROR, GST_URI_ERROR_BAD_URI, "Invalid DV URI");
1087 return FALSE;
1088 }
1089 g_free (protocol);
1090
1091 location = gst_uri_get_location (uri);
1092 if (location && *location != '\0')
1093 gst_dv1394src->port = strtol (location, NULL, 10);
1094 else
1095 gst_dv1394src->port = DEFAULT_PORT;
1096 g_free (location);
1097 g_free (gst_dv1394src->uri);
1098 gst_dv1394src->uri = g_strdup_printf ("dv://%d", gst_dv1394src->port);
1099
1100 return ret;
1101 }
1102
1103 static void
gst_dv1394src_uri_handler_init(gpointer g_iface,gpointer iface_data)1104 gst_dv1394src_uri_handler_init (gpointer g_iface, gpointer iface_data)
1105 {
1106 GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
1107
1108 iface->get_type = gst_dv1394src_uri_get_type;
1109 iface->get_protocols = gst_dv1394src_uri_get_protocols;
1110 iface->get_uri = gst_dv1394src_uri_get_uri;
1111 iface->set_uri = gst_dv1394src_uri_set_uri;
1112 }
1113