1 /* GStreamer
2 * Copyright (C) <2008> Wim Taymans <wim.taymans@gmail.com>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 */
19
20 #ifdef HAVE_CONFIG_H
21 # include "config.h"
22 #endif
23
24 #include <string.h>
25
26 #include <gst/rtp/gstrtpbuffer.h>
27 #include <gst/video/video.h>
28
29 #include "gstrtpvrawpay.h"
30 #include "gstrtputils.h"
31
32 enum
33 {
34 PROP_CHUNKS_PER_FRAME = 1
35 };
36
37 #define DEFAULT_CHUNKS_PER_FRAME 10
38
39 GST_DEBUG_CATEGORY_STATIC (rtpvrawpay_debug);
40 #define GST_CAT_DEFAULT (rtpvrawpay_debug)
41
42 static GstStaticPadTemplate gst_rtp_vraw_pay_sink_template =
43 GST_STATIC_PAD_TEMPLATE ("sink",
44 GST_PAD_SINK,
45 GST_PAD_ALWAYS,
46 GST_STATIC_CAPS ("video/x-raw, "
47 "format = (string) { RGB, RGBA, BGR, BGRA, AYUV, UYVY, I420, Y41B, UYVP }, "
48 "width = (int) [ 1, 32767 ], " "height = (int) [ 1, 32767 ]; ")
49 );
50
51 static GstStaticPadTemplate gst_rtp_vraw_pay_src_template =
52 GST_STATIC_PAD_TEMPLATE ("src",
53 GST_PAD_SRC,
54 GST_PAD_ALWAYS,
55 GST_STATIC_CAPS ("application/x-rtp, "
56 "media = (string) \"video\", "
57 "payload = (int) " GST_RTP_PAYLOAD_DYNAMIC_STRING ", "
58 "clock-rate = (int) 90000, "
59 "encoding-name = (string) \"RAW\","
60 "sampling = (string) { \"RGB\", \"RGBA\", \"BGR\", \"BGRA\", "
61 "\"YCbCr-4:4:4\", \"YCbCr-4:2:2\", \"YCbCr-4:2:0\", "
62 "\"YCbCr-4:1:1\" },"
63 /* we cannot express these as strings
64 * "width = (string) [1 32767],"
65 * "height = (string) [1 32767],"
66 */
67 "depth = (string) { \"8\", \"10\", \"12\", \"16\" },"
68 "colorimetry = (string) { \"BT601-5\", \"BT709-2\", \"SMPTE240M\" }"
69 /* optional
70 * interlace =
71 * top-field-first =
72 * chroma-position = (string)
73 * gamma = (float)
74 */
75 )
76 );
77
78 static gboolean gst_rtp_vraw_pay_setcaps (GstRTPBasePayload * payload,
79 GstCaps * caps);
80 static GstFlowReturn gst_rtp_vraw_pay_handle_buffer (GstRTPBasePayload *
81 payload, GstBuffer * buffer);
82 static void gst_rtp_vraw_pay_get_property (GObject * object, guint prop_id,
83 GValue * value, GParamSpec * pspec);
84 static void gst_rtp_vraw_pay_set_property (GObject * object, guint prop_id,
85 const GValue * value, GParamSpec * pspec);
86
87 G_DEFINE_TYPE (GstRtpVRawPay, gst_rtp_vraw_pay, GST_TYPE_RTP_BASE_PAYLOAD);
88
89 static void
gst_rtp_vraw_pay_class_init(GstRtpVRawPayClass * klass)90 gst_rtp_vraw_pay_class_init (GstRtpVRawPayClass * klass)
91 {
92 GstRTPBasePayloadClass *gstrtpbasepayload_class;
93 GstElementClass *gstelement_class;
94 GObjectClass *gobject_class;
95
96 gobject_class = (GObjectClass *) klass;
97 gstelement_class = (GstElementClass *) klass;
98 gstrtpbasepayload_class = (GstRTPBasePayloadClass *) klass;
99
100 gobject_class->set_property = gst_rtp_vraw_pay_set_property;
101 gobject_class->get_property = gst_rtp_vraw_pay_get_property;
102
103 g_object_class_install_property (gobject_class,
104 PROP_CHUNKS_PER_FRAME,
105 g_param_spec_int ("chunks-per-frame", "Chunks per Frame",
106 "Split and send out each frame in multiple chunks to reduce overhead",
107 1, G_MAXINT, DEFAULT_CHUNKS_PER_FRAME,
108 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)
109 );
110
111 gstrtpbasepayload_class->set_caps = gst_rtp_vraw_pay_setcaps;
112 gstrtpbasepayload_class->handle_buffer = gst_rtp_vraw_pay_handle_buffer;
113
114 gst_element_class_add_static_pad_template (gstelement_class,
115 &gst_rtp_vraw_pay_src_template);
116 gst_element_class_add_static_pad_template (gstelement_class,
117 &gst_rtp_vraw_pay_sink_template);
118
119 gst_element_class_set_static_metadata (gstelement_class,
120 "RTP Raw Video payloader", "Codec/Payloader/Network/RTP",
121 "Payload raw video as RTP packets (RFC 4175)",
122 "Wim Taymans <wim.taymans@gmail.com>");
123
124 GST_DEBUG_CATEGORY_INIT (rtpvrawpay_debug, "rtpvrawpay", 0,
125 "Raw video RTP Payloader");
126 }
127
128 static void
gst_rtp_vraw_pay_init(GstRtpVRawPay * rtpvrawpay)129 gst_rtp_vraw_pay_init (GstRtpVRawPay * rtpvrawpay)
130 {
131 rtpvrawpay->chunks_per_frame = DEFAULT_CHUNKS_PER_FRAME;
132 }
133
134 static gboolean
gst_rtp_vraw_pay_setcaps(GstRTPBasePayload * payload,GstCaps * caps)135 gst_rtp_vraw_pay_setcaps (GstRTPBasePayload * payload, GstCaps * caps)
136 {
137 GstRtpVRawPay *rtpvrawpay;
138 gboolean res;
139 gint pgroup, xinc, yinc;
140 const gchar *depthstr, *samplingstr, *colorimetrystr;
141 gchar *wstr, *hstr;
142 GstVideoInfo info;
143
144 rtpvrawpay = GST_RTP_VRAW_PAY (payload);
145
146 if (!gst_video_info_from_caps (&info, caps))
147 goto invalid_caps;
148
149 rtpvrawpay->vinfo = info;
150
151 if (gst_video_colorimetry_matches (&info.colorimetry,
152 GST_VIDEO_COLORIMETRY_BT601)) {
153 colorimetrystr = "BT601-5";
154 } else if (gst_video_colorimetry_matches (&info.colorimetry,
155 GST_VIDEO_COLORIMETRY_BT709)) {
156 colorimetrystr = "BT709-2";
157 } else if (gst_video_colorimetry_matches (&info.colorimetry,
158 GST_VIDEO_COLORIMETRY_SMPTE240M)) {
159 colorimetrystr = "SMPTE240M";
160 } else {
161 colorimetrystr = "SMPTE240M";
162 }
163
164 xinc = yinc = 1;
165
166 /* these values are the only thing we can do */
167 depthstr = "8";
168
169 switch (GST_VIDEO_INFO_FORMAT (&info)) {
170 case GST_VIDEO_FORMAT_RGBA:
171 samplingstr = "RGBA";
172 pgroup = 4;
173 break;
174 case GST_VIDEO_FORMAT_BGRA:
175 samplingstr = "BGRA";
176 pgroup = 4;
177 break;
178 case GST_VIDEO_FORMAT_RGB:
179 samplingstr = "RGB";
180 pgroup = 3;
181 break;
182 case GST_VIDEO_FORMAT_BGR:
183 samplingstr = "BGR";
184 pgroup = 3;
185 break;
186 case GST_VIDEO_FORMAT_AYUV:
187 samplingstr = "YCbCr-4:4:4";
188 pgroup = 3;
189 break;
190 case GST_VIDEO_FORMAT_UYVY:
191 samplingstr = "YCbCr-4:2:2";
192 pgroup = 4;
193 xinc = 2;
194 break;
195 case GST_VIDEO_FORMAT_Y41B:
196 samplingstr = "YCbCr-4:1:1";
197 pgroup = 6;
198 xinc = 4;
199 break;
200 case GST_VIDEO_FORMAT_I420:
201 samplingstr = "YCbCr-4:2:0";
202 pgroup = 6;
203 xinc = yinc = 2;
204 break;
205 case GST_VIDEO_FORMAT_UYVP:
206 samplingstr = "YCbCr-4:2:2";
207 pgroup = 5;
208 xinc = 2;
209 depthstr = "10";
210 break;
211 default:
212 goto unknown_format;
213 break;
214 }
215
216 if (GST_VIDEO_INFO_IS_INTERLACED (&info)) {
217 yinc *= 2;
218 }
219
220 rtpvrawpay->pgroup = pgroup;
221 rtpvrawpay->xinc = xinc;
222 rtpvrawpay->yinc = yinc;
223
224 GST_DEBUG_OBJECT (payload, "width %d, height %d, sampling %s",
225 GST_VIDEO_INFO_WIDTH (&info), GST_VIDEO_INFO_HEIGHT (&info), samplingstr);
226 GST_DEBUG_OBJECT (payload, "xinc %d, yinc %d, pgroup %d", xinc, yinc, pgroup);
227
228 wstr = g_strdup_printf ("%d", GST_VIDEO_INFO_WIDTH (&info));
229 hstr = g_strdup_printf ("%d", GST_VIDEO_INFO_HEIGHT (&info));
230
231 gst_rtp_base_payload_set_options (payload, "video", TRUE, "RAW", 90000);
232 if (GST_VIDEO_INFO_IS_INTERLACED (&info)) {
233 res = gst_rtp_base_payload_set_outcaps (payload, "sampling", G_TYPE_STRING,
234 samplingstr, "depth", G_TYPE_STRING, depthstr, "width", G_TYPE_STRING,
235 wstr, "height", G_TYPE_STRING, hstr, "colorimetry", G_TYPE_STRING,
236 colorimetrystr, "interlace", G_TYPE_STRING, "true", NULL);
237 } else {
238 res = gst_rtp_base_payload_set_outcaps (payload, "sampling", G_TYPE_STRING,
239 samplingstr, "depth", G_TYPE_STRING, depthstr, "width", G_TYPE_STRING,
240 wstr, "height", G_TYPE_STRING, hstr, "colorimetry", G_TYPE_STRING,
241 colorimetrystr, NULL);
242 }
243 g_free (wstr);
244 g_free (hstr);
245
246 return res;
247
248 /* ERRORS */
249 invalid_caps:
250 {
251 GST_ERROR_OBJECT (payload, "could not parse caps");
252 return FALSE;
253 }
254 unknown_format:
255 {
256 GST_ERROR_OBJECT (payload, "unknown caps format");
257 return FALSE;
258 }
259 }
260
261 static GstFlowReturn
gst_rtp_vraw_pay_handle_buffer(GstRTPBasePayload * payload,GstBuffer * buffer)262 gst_rtp_vraw_pay_handle_buffer (GstRTPBasePayload * payload, GstBuffer * buffer)
263 {
264 GstRtpVRawPay *rtpvrawpay;
265 GstFlowReturn ret = GST_FLOW_OK;
266 gfloat packets_per_packline;
267 guint pgroups_per_packet;
268 guint packlines_per_list, buffers_per_list;
269 guint lines_delay; /* after how many packed lines we push out a buffer list */
270 guint last_line; /* last pack line number we pushed out a buffer list */
271 guint line, offset;
272 guint8 *p0, *yp, *up, *vp;
273 guint ystride, uvstride;
274 guint xinc, yinc;
275 guint pgroup;
276 guint mtu;
277 guint width, height;
278 gint field, fields;
279 GstVideoFormat format;
280 GstVideoFrame frame;
281 gint interlaced;
282 gboolean use_buffer_lists;
283 GstBufferList *list = NULL;
284 GstRTPBuffer rtp = { NULL, };
285 gboolean discont;
286
287 rtpvrawpay = GST_RTP_VRAW_PAY (payload);
288
289 if (!gst_video_frame_map (&frame, &rtpvrawpay->vinfo, buffer, GST_MAP_READ)) {
290 gst_buffer_unref (buffer);
291 return GST_FLOW_ERROR;
292 }
293
294 discont = GST_BUFFER_IS_DISCONT (buffer);
295
296 GST_LOG_OBJECT (rtpvrawpay, "new frame of %" G_GSIZE_FORMAT " bytes",
297 gst_buffer_get_size (buffer));
298
299 /* get pointer and strides of the planes */
300 p0 = GST_VIDEO_FRAME_PLANE_DATA (&frame, 0);
301 yp = GST_VIDEO_FRAME_COMP_DATA (&frame, 0);
302 up = GST_VIDEO_FRAME_COMP_DATA (&frame, 1);
303 vp = GST_VIDEO_FRAME_COMP_DATA (&frame, 2);
304
305 ystride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 0);
306 uvstride = GST_VIDEO_FRAME_COMP_STRIDE (&frame, 1);
307
308 mtu = GST_RTP_BASE_PAYLOAD_MTU (payload);
309
310 /* amount of bytes for one pixel */
311 pgroup = rtpvrawpay->pgroup;
312 width = GST_VIDEO_INFO_WIDTH (&rtpvrawpay->vinfo);
313 height = GST_VIDEO_INFO_HEIGHT (&rtpvrawpay->vinfo);
314
315 interlaced = GST_VIDEO_INFO_IS_INTERLACED (&rtpvrawpay->vinfo);
316
317 format = GST_VIDEO_INFO_FORMAT (&rtpvrawpay->vinfo);
318
319 yinc = rtpvrawpay->yinc;
320 xinc = rtpvrawpay->xinc;
321
322 /* after how many packed lines we push out a buffer list */
323 lines_delay = GST_ROUND_UP_4 (height / rtpvrawpay->chunks_per_frame);
324
325 /* calculate how many buffers we expect to store in a single buffer list */
326 pgroups_per_packet = (mtu - (12 + 14)) / pgroup;
327 packets_per_packline = width / (xinc * pgroups_per_packet * 1.0);
328 packlines_per_list = height / (yinc * rtpvrawpay->chunks_per_frame);
329 buffers_per_list = packlines_per_list * packets_per_packline;
330 buffers_per_list = GST_ROUND_UP_8 (buffers_per_list);
331
332 use_buffer_lists = buffers_per_list > 1 &&
333 (rtpvrawpay->chunks_per_frame < (height / yinc));
334
335 fields = 1 + interlaced;
336
337 /* start with line 0, offset 0 */
338 for (field = 0; field < fields; field++) {
339 line = field;
340 offset = 0;
341 last_line = 0;
342
343 if (use_buffer_lists)
344 list = gst_buffer_list_new_sized (buffers_per_list);
345
346 /* write all lines */
347 while (line < height) {
348 guint left, pack_line;
349 GstBuffer *out;
350 guint8 *outdata, *headers;
351 gboolean next_line, complete = FALSE;
352 guint length, cont, pixels;
353
354 /* get the max allowed payload length size, we try to fill the complete MTU */
355 left = gst_rtp_buffer_calc_payload_len (mtu, 0, 0);
356 out = gst_rtp_buffer_new_allocate (left, 0, 0);
357
358 if (discont) {
359 GST_BUFFER_FLAG_SET (out, GST_BUFFER_FLAG_DISCONT);
360 /* Only the first outputted buffer has the DISCONT flag */
361 discont = FALSE;
362 }
363
364 if (field == 0) {
365 GST_BUFFER_PTS (out) = GST_BUFFER_PTS (buffer);
366 } else {
367 GST_BUFFER_PTS (out) = GST_BUFFER_PTS (buffer) +
368 GST_BUFFER_DURATION (buffer) / 2;
369 }
370
371 gst_rtp_buffer_map (out, GST_MAP_WRITE, &rtp);
372 outdata = gst_rtp_buffer_get_payload (&rtp);
373
374 GST_LOG_OBJECT (rtpvrawpay, "created buffer of size %u for MTU %u", left,
375 mtu);
376
377 /*
378 * 0 1 2 3
379 * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
380 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
381 * | Extended Sequence Number | Length |
382 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
383 * |F| Line No |C| Offset |
384 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
385 * | Length |F| Line No |
386 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
387 * |C| Offset | .
388 * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ .
389 * . .
390 * . Two (partial) lines of video data .
391 * . .
392 * +---------------------------------------------------------------+
393 */
394
395 /* need 2 bytes for the extended sequence number */
396 *outdata++ = 0;
397 *outdata++ = 0;
398 left -= 2;
399
400 /* the headers start here */
401 headers = outdata;
402
403 /* make sure we can fit at least *one* header and pixel */
404 if (!(left > (6 + pgroup))) {
405 gst_rtp_buffer_unmap (&rtp);
406 gst_buffer_unref (out);
407 goto too_small;
408 }
409
410 /* while we can fit at least one header and one pixel */
411 while (left > (6 + pgroup)) {
412 /* we need a 6 bytes header */
413 left -= 6;
414
415 /* get how may bytes we need for the remaining pixels */
416 pixels = width - offset;
417 length = (pixels * pgroup) / xinc;
418
419 if (left >= length) {
420 /* pixels and header fit completely, we will write them and skip to the
421 * next line. */
422 next_line = TRUE;
423 } else {
424 /* line does not fit completely, see how many pixels fit */
425 pixels = (left / pgroup) * xinc;
426 length = (pixels * pgroup) / xinc;
427 next_line = FALSE;
428 }
429 GST_LOG_OBJECT (rtpvrawpay, "filling %u bytes in %u pixels", length,
430 pixels);
431 left -= length;
432
433 /* write length */
434 *outdata++ = (length >> 8) & 0xff;
435 *outdata++ = length & 0xff;
436
437 /* write line no */
438 *outdata++ = ((line >> 8) & 0x7f) | ((field << 7) & 0x80);
439 *outdata++ = line & 0xff;
440
441 if (next_line) {
442 /* go to next line we do this here to make the check below easier */
443 line += yinc;
444 }
445
446 /* calculate continuation marker */
447 cont = (left > (6 + pgroup) && line < height) ? 0x80 : 0x00;
448
449 /* write offset and continuation marker */
450 *outdata++ = ((offset >> 8) & 0x7f) | cont;
451 *outdata++ = offset & 0xff;
452
453 if (next_line) {
454 /* reset offset */
455 offset = 0;
456 GST_LOG_OBJECT (rtpvrawpay, "go to next line %u", line);
457 } else {
458 offset += pixels;
459 GST_LOG_OBJECT (rtpvrawpay, "next offset %u", offset);
460 }
461
462 if (!cont)
463 break;
464 }
465 GST_LOG_OBJECT (rtpvrawpay, "consumed %u bytes",
466 (guint) (outdata - headers));
467
468 /* second pass, read headers and write the data */
469 while (TRUE) {
470 guint offs, lin;
471
472 /* read length and cont */
473 length = (headers[0] << 8) | headers[1];
474 lin = ((headers[2] & 0x7f) << 8) | headers[3];
475 offs = ((headers[4] & 0x7f) << 8) | headers[5];
476 cont = headers[4] & 0x80;
477 pixels = length / pgroup;
478 headers += 6;
479
480 GST_LOG_OBJECT (payload,
481 "writing length %u, line %u, offset %u, cont %d", length, lin, offs,
482 cont);
483
484 switch (format) {
485 case GST_VIDEO_FORMAT_RGB:
486 case GST_VIDEO_FORMAT_RGBA:
487 case GST_VIDEO_FORMAT_BGR:
488 case GST_VIDEO_FORMAT_BGRA:
489 case GST_VIDEO_FORMAT_UYVY:
490 case GST_VIDEO_FORMAT_UYVP:
491 offs /= xinc;
492 memcpy (outdata, p0 + (lin * ystride) + (offs * pgroup), length);
493 outdata += length;
494 break;
495 case GST_VIDEO_FORMAT_AYUV:
496 {
497 gint i;
498 guint8 *datap;
499
500 datap = p0 + (lin * ystride) + (offs * 4);
501
502 for (i = 0; i < pixels; i++) {
503 *outdata++ = datap[2];
504 *outdata++ = datap[1];
505 *outdata++ = datap[3];
506 datap += 4;
507 }
508 break;
509 }
510 case GST_VIDEO_FORMAT_I420:
511 {
512 gint i;
513 guint uvoff;
514 guint8 *yd1p, *yd2p, *udp, *vdp;
515
516 yd1p = yp + (lin * ystride) + (offs);
517 yd2p = yd1p + ystride;
518 uvoff = (lin / yinc * uvstride) + (offs / xinc);
519 udp = up + uvoff;
520 vdp = vp + uvoff;
521
522 for (i = 0; i < pixels; i++) {
523 *outdata++ = *yd1p++;
524 *outdata++ = *yd1p++;
525 *outdata++ = *yd2p++;
526 *outdata++ = *yd2p++;
527 *outdata++ = *udp++;
528 *outdata++ = *vdp++;
529 }
530 break;
531 }
532 case GST_VIDEO_FORMAT_Y41B:
533 {
534 gint i;
535 guint uvoff;
536 guint8 *ydp, *udp, *vdp;
537
538 ydp = yp + (lin * ystride) + offs;
539 uvoff = (lin / yinc * uvstride) + (offs / xinc);
540 udp = up + uvoff;
541 vdp = vp + uvoff;
542
543 for (i = 0; i < pixels; i++) {
544 *outdata++ = *udp++;
545 *outdata++ = *ydp++;
546 *outdata++ = *ydp++;
547 *outdata++ = *vdp++;
548 *outdata++ = *ydp++;
549 *outdata++ = *ydp++;
550 }
551 break;
552 }
553 default:
554 gst_rtp_buffer_unmap (&rtp);
555 gst_buffer_unref (out);
556 goto unknown_sampling;
557 }
558
559 if (!cont)
560 break;
561 }
562
563 if (line >= height) {
564 GST_LOG_OBJECT (rtpvrawpay, "field/frame complete, set marker");
565 gst_rtp_buffer_set_marker (&rtp, TRUE);
566 complete = TRUE;
567 }
568 gst_rtp_buffer_unmap (&rtp);
569 if (left > 0) {
570 GST_LOG_OBJECT (rtpvrawpay, "we have %u bytes left", left);
571 gst_buffer_resize (out, 0, gst_buffer_get_size (out) - left);
572 }
573
574 gst_rtp_copy_video_meta (rtpvrawpay, out, buffer);
575
576 /* Now either push out the buffer directly */
577 if (!use_buffer_lists) {
578 ret = gst_rtp_base_payload_push (payload, out);
579 continue;
580 }
581
582 /* or add the buffer to buffer list ... */
583 gst_buffer_list_add (list, out);
584
585 /* .. and check if we need to push out the list */
586 pack_line = (line - field) / fields;
587 if (complete || (pack_line > last_line && pack_line % lines_delay == 0)) {
588 GST_LOG_OBJECT (rtpvrawpay, "pushing list of %u buffers up to pack "
589 "line %u", gst_buffer_list_length (list), pack_line);
590 ret = gst_rtp_base_payload_push_list (payload, list);
591 list = NULL;
592 if (!complete)
593 list = gst_buffer_list_new_sized (buffers_per_list);
594 last_line = pack_line;
595 }
596 }
597
598 }
599
600 gst_video_frame_unmap (&frame);
601 gst_buffer_unref (buffer);
602
603 return ret;
604
605 /* ERRORS */
606 unknown_sampling:
607 {
608 GST_ELEMENT_ERROR (payload, STREAM, FORMAT,
609 (NULL), ("unimplemented sampling"));
610 gst_video_frame_unmap (&frame);
611 gst_buffer_unref (buffer);
612 return GST_FLOW_NOT_SUPPORTED;
613 }
614 too_small:
615 {
616 GST_ELEMENT_ERROR (payload, RESOURCE, NO_SPACE_LEFT,
617 (NULL), ("not enough space to send at least one pixel"));
618 gst_video_frame_unmap (&frame);
619 gst_buffer_unref (buffer);
620 return GST_FLOW_NOT_SUPPORTED;
621 }
622 }
623
624 static void
gst_rtp_vraw_pay_set_property(GObject * object,guint prop_id,const GValue * value,GParamSpec * pspec)625 gst_rtp_vraw_pay_set_property (GObject * object, guint prop_id,
626 const GValue * value, GParamSpec * pspec)
627 {
628 GstRtpVRawPay *rtpvrawpay;
629
630 rtpvrawpay = GST_RTP_VRAW_PAY (object);
631
632 switch (prop_id) {
633 case PROP_CHUNKS_PER_FRAME:
634 rtpvrawpay->chunks_per_frame = g_value_get_int (value);
635 break;
636 default:
637 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
638 break;
639 }
640 }
641
642 static void
gst_rtp_vraw_pay_get_property(GObject * object,guint prop_id,GValue * value,GParamSpec * pspec)643 gst_rtp_vraw_pay_get_property (GObject * object, guint prop_id,
644 GValue * value, GParamSpec * pspec)
645 {
646 GstRtpVRawPay *rtpvrawpay;
647
648 rtpvrawpay = GST_RTP_VRAW_PAY (object);
649
650 switch (prop_id) {
651 case PROP_CHUNKS_PER_FRAME:
652 g_value_set_int (value, rtpvrawpay->chunks_per_frame);
653 break;
654 default:
655 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
656 break;
657 }
658 }
659
660 gboolean
gst_rtp_vraw_pay_plugin_init(GstPlugin * plugin)661 gst_rtp_vraw_pay_plugin_init (GstPlugin * plugin)
662 {
663 return gst_element_register (plugin, "rtpvrawpay",
664 GST_RANK_SECONDARY, GST_TYPE_RTP_VRAW_PAY);
665 }
666