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