Reorder arguments for av_fifo_generic_read to be more logical and
[libav.git] / libavformat / swfenc.c
CommitLineData
de6d9b64 1/*
58c37c30 2 * Flash Compatible Streaming Format muxer
406792e7
DB
3 * Copyright (c) 2000 Fabrice Bellard
4 * Copyright (c) 2003 Tinic Uro
de6d9b64 5 *
b78e7197
DB
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
17269bdf
FB
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
b78e7197 11 * version 2.1 of the License, or (at your option) any later version.
de6d9b64 12 *
b78e7197 13 * FFmpeg is distributed in the hope that it will be useful,
de6d9b64 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17269bdf
FB
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
de6d9b64 17 *
17269bdf 18 * You should have received a copy of the GNU Lesser General Public
b78e7197 19 * License along with FFmpeg; if not, write to the Free Software
5509bffa 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
de6d9b64 21 */
245976da
DB
22
23#include "libavcodec/bitstream.h"
de6d9b64 24#include "avformat.h"
3b35f4ab 25#include "swf.h"
dd8a46d9 26
de6d9b64
FB
27static void put_swf_tag(AVFormatContext *s, int tag)
28{
29 SWFContext *swf = s->priv_data;
899681cd 30 ByteIOContext *pb = s->pb;
de6d9b64
FB
31
32 swf->tag_pos = url_ftell(pb);
33 swf->tag = tag;
34 /* reserve some room for the tag */
35 if (tag & TAG_LONG) {
36 put_le16(pb, 0);
37 put_le32(pb, 0);
38 } else {
39 put_le16(pb, 0);
40 }
41}
42
43static void put_swf_end_tag(AVFormatContext *s)
44{
45 SWFContext *swf = s->priv_data;
899681cd 46 ByteIOContext *pb = s->pb;
bc5c918e 47 int64_t pos;
de6d9b64
FB
48 int tag_len, tag;
49
50 pos = url_ftell(pb);
51 tag_len = pos - swf->tag_pos - 2;
52 tag = swf->tag;
53 url_fseek(pb, swf->tag_pos, SEEK_SET);
54 if (tag & TAG_LONG) {
55 tag &= ~TAG_LONG;
56 put_le16(pb, (tag << 6) | 0x3f);
57 put_le32(pb, tag_len - 4);
58 } else {
59 assert(tag_len < 0x3f);
60 put_le16(pb, (tag << 6) | tag_len);
61 }
62 url_fseek(pb, pos, SEEK_SET);
63}
64
65static inline void max_nbits(int *nbits_ptr, int val)
66{
67 int n;
68
69 if (val == 0)
70 return;
71 val = abs(val);
72 n = 1;
73 while (val != 0) {
74 n++;
75 val >>= 1;
76 }
77 if (n > *nbits_ptr)
78 *nbits_ptr = n;
79}
80
115329f1 81static void put_swf_rect(ByteIOContext *pb,
de6d9b64
FB
82 int xmin, int xmax, int ymin, int ymax)
83{
84 PutBitContext p;
0c1a9eda 85 uint8_t buf[256];
de6d9b64
FB
86 int nbits, mask;
87
117a5490 88 init_put_bits(&p, buf, sizeof(buf));
115329f1 89
de6d9b64
FB
90 nbits = 0;
91 max_nbits(&nbits, xmin);
92 max_nbits(&nbits, xmax);
93 max_nbits(&nbits, ymin);
94 max_nbits(&nbits, ymax);
95 mask = (1 << nbits) - 1;
96
97 /* rectangle info */
98 put_bits(&p, 5, nbits);
99 put_bits(&p, nbits, xmin & mask);
100 put_bits(&p, nbits, xmax & mask);
101 put_bits(&p, nbits, ymin & mask);
102 put_bits(&p, nbits, ymax & mask);
115329f1 103
de6d9b64 104 flush_put_bits(&p);
17592475 105 put_buffer(pb, buf, pbBufPtr(&p) - p.buf);
de6d9b64
FB
106}
107
108static void put_swf_line_edge(PutBitContext *pb, int dx, int dy)
109{
110 int nbits, mask;
111
112 put_bits(pb, 1, 1); /* edge */
113 put_bits(pb, 1, 1); /* line select */
114 nbits = 2;
115 max_nbits(&nbits, dx);
116 max_nbits(&nbits, dy);
117
118 mask = (1 << nbits) - 1;
119 put_bits(pb, 4, nbits - 2); /* 16 bits precision */
120 if (dx == 0) {
c78ed542
BC
121 put_bits(pb, 1, 0);
122 put_bits(pb, 1, 1);
123 put_bits(pb, nbits, dy & mask);
de6d9b64 124 } else if (dy == 0) {
c78ed542
BC
125 put_bits(pb, 1, 0);
126 put_bits(pb, 1, 0);
127 put_bits(pb, nbits, dx & mask);
de6d9b64 128 } else {
c78ed542
BC
129 put_bits(pb, 1, 1);
130 put_bits(pb, nbits, dx & mask);
131 put_bits(pb, nbits, dy & mask);
de6d9b64
FB
132 }
133}
134
135#define FRAC_BITS 16
136
de6d9b64
FB
137static void put_swf_matrix(ByteIOContext *pb,
138 int a, int b, int c, int d, int tx, int ty)
139{
140 PutBitContext p;
0c1a9eda 141 uint8_t buf[256];
747a0554 142 int nbits;
de6d9b64 143
117a5490 144 init_put_bits(&p, buf, sizeof(buf));
115329f1 145
de6d9b64 146 put_bits(&p, 1, 1); /* a, d present */
747a0554
TU
147 nbits = 1;
148 max_nbits(&nbits, a);
149 max_nbits(&nbits, d);
150 put_bits(&p, 5, nbits); /* nb bits */
151 put_bits(&p, nbits, a);
152 put_bits(&p, nbits, d);
115329f1 153
de6d9b64 154 put_bits(&p, 1, 1); /* b, c present */
747a0554
TU
155 nbits = 1;
156 max_nbits(&nbits, c);
157 max_nbits(&nbits, b);
158 put_bits(&p, 5, nbits); /* nb bits */
159 put_bits(&p, nbits, c);
160 put_bits(&p, nbits, b);
161
162 nbits = 1;
163 max_nbits(&nbits, tx);
164 max_nbits(&nbits, ty);
165 put_bits(&p, 5, nbits); /* nb bits */
166 put_bits(&p, nbits, tx);
167 put_bits(&p, nbits, ty);
de6d9b64
FB
168
169 flush_put_bits(&p);
17592475 170 put_buffer(pb, buf, pbBufPtr(&p) - p.buf);
de6d9b64
FB
171}
172
de6d9b64
FB
173static int swf_write_header(AVFormatContext *s)
174{
fed7d067 175 SWFContext *swf = s->priv_data;
899681cd 176 ByteIOContext *pb = s->pb;
de6d9b64 177 PutBitContext p;
0c1a9eda 178 uint8_t buf1[256];
14bea432 179 int i, width, height, rate, rate_base;
4a712c33 180 int version;
de6d9b64 181
747a0554 182 swf->sound_samples = 0;
747a0554
TU
183 swf->swf_frame_number = 0;
184 swf->video_frame_number = 0;
747a0554 185
de6d9b64 186 for(i=0;i<s->nb_streams;i++) {
92f76fbf 187 AVCodecContext *enc = s->streams[i]->codec;
013e0a8f
BC
188 if (enc->codec_type == CODEC_TYPE_AUDIO) {
189 if (enc->codec_id == CODEC_ID_MP3) {
190 if (!enc->frame_size) {
191 av_log(s, AV_LOG_ERROR, "audio frame size not set\n");
192 return -1;
193 }
92f76fbf 194 swf->audio_enc = enc;
41dd680d 195 swf->audio_fifo= av_fifo_alloc(AUDIO_FIFO_SIZE);
013e0a8f 196 } else {
5095aaa9 197 av_log(s, AV_LOG_ERROR, "SWF muxer only supports MP3\n");
013e0a8f
BC
198 return -1;
199 }
200 } else {
5fcf2df3
BC
201 if (enc->codec_id == CODEC_ID_VP6F ||
202 enc->codec_id == CODEC_ID_FLV1 ||
203 enc->codec_id == CODEC_ID_MJPEG) {
92f76fbf 204 swf->video_enc = enc;
747a0554 205 } else {
5095aaa9 206 av_log(s, AV_LOG_ERROR, "SWF muxer only supports VP6, FLV1 and MJPEG\n");
747a0554
TU
207 return -1;
208 }
209 }
de6d9b64
FB
210 }
211
92f76fbf 212 if (!swf->video_enc) {
df3a80b5 213 /* currently, cannot work correctly if audio only */
de6d9b64
FB
214 width = 320;
215 height = 200;
14bea432
MN
216 rate = 10;
217 rate_base= 1;
de6d9b64 218 } else {
92f76fbf
BC
219 width = swf->video_enc->width;
220 height = swf->video_enc->height;
221 rate = swf->video_enc->time_base.den;
222 rate_base = swf->video_enc->time_base.num;
de6d9b64
FB
223 }
224
92f76fbf 225 if (!swf->audio_enc)
5fcf2df3 226 swf->samples_per_frame = (44100. * rate_base) / rate;
92f76fbf
BC
227 else
228 swf->samples_per_frame = (swf->audio_enc->sample_rate * rate_base) / rate;
747a0554 229
de6d9b64 230 put_tag(pb, "FWS");
4a712c33
BC
231
232 if (!strcmp("avm2", s->oformat->name))
233 version = 9;
92f76fbf 234 else if (swf->video_enc && swf->video_enc->codec_id == CODEC_ID_VP6F)
4a712c33 235 version = 8; /* version 8 and above support VP6 codec */
92f76fbf 236 else if (swf->video_enc && swf->video_enc->codec_id == CODEC_ID_FLV1)
4a712c33 237 version = 6; /* version 6 and above support FLV1 codec */
9caf6781 238 else
4a712c33
BC
239 version = 4; /* version 4 for mpeg audio support */
240 put_byte(pb, version);
241
115329f1
DB
242 put_le32(pb, DUMMY_FILE_SIZE); /* dummy size
243 (will be patched if not streamed) */
de6d9b64 244
747a0554 245 put_swf_rect(pb, 0, width * 20, 0, height * 20);
14bea432 246 put_le16(pb, (rate * 256) / rate_base); /* frame rate */
de6d9b64 247 swf->duration_pos = url_ftell(pb);
14bea432 248 put_le16(pb, (uint16_t)(DUMMY_DURATION * (int64_t)rate / rate_base)); /* frame count */
115329f1 249
dfb400a8 250 /* avm2/swf v9 (also v8?) files require a file attribute tag */
4a712c33 251 if (version == 9) {
dfb400a8
PE
252 put_swf_tag(s, TAG_FILEATTRIBUTES);
253 put_le32(pb, 1<<3); /* set ActionScript v3/AVM2 flag */
254 put_swf_end_tag(s);
255 }
256
de6d9b64 257 /* define a shape with the jpeg inside */
92f76fbf 258 if (swf->video_enc && swf->video_enc->codec_id == CODEC_ID_MJPEG) {
747a0554
TU
259 put_swf_tag(s, TAG_DEFINESHAPE);
260
261 put_le16(pb, SHAPE_ID); /* ID of shape */
262 /* bounding rectangle */
263 put_swf_rect(pb, 0, width, 0, height);
264 /* style info */
265 put_byte(pb, 1); /* one fill style */
266 put_byte(pb, 0x41); /* clipped bitmap fill */
267 put_le16(pb, BITMAP_ID); /* bitmap ID */
268 /* position of the bitmap */
115329f1 269 put_swf_matrix(pb, (int)(1.0 * (1 << FRAC_BITS)), 0,
c78ed542 270 0, (int)(1.0 * (1 << FRAC_BITS)), 0, 0);
747a0554 271 put_byte(pb, 0); /* no line style */
115329f1 272
747a0554
TU
273 /* shape drawing */
274 init_put_bits(&p, buf1, sizeof(buf1));
275 put_bits(&p, 4, 1); /* one fill bit */
276 put_bits(&p, 4, 0); /* zero line bit */
115329f1 277
747a0554
TU
278 put_bits(&p, 1, 0); /* not an edge */
279 put_bits(&p, 5, FLAG_MOVETO | FLAG_SETFILL0);
280 put_bits(&p, 5, 1); /* nbits */
281 put_bits(&p, 1, 0); /* X */
282 put_bits(&p, 1, 0); /* Y */
283 put_bits(&p, 1, 1); /* set fill style 1 */
115329f1 284
747a0554
TU
285 /* draw the rectangle ! */
286 put_swf_line_edge(&p, width, 0);
287 put_swf_line_edge(&p, 0, height);
288 put_swf_line_edge(&p, -width, 0);
289 put_swf_line_edge(&p, 0, -height);
115329f1 290
747a0554
TU
291 /* end of shape */
292 put_bits(&p, 1, 0); /* not an edge */
293 put_bits(&p, 5, 0);
de6d9b64 294
747a0554
TU
295 flush_put_bits(&p);
296 put_buffer(pb, buf1, pbBufPtr(&p) - p.buf);
de6d9b64 297
747a0554
TU
298 put_swf_end_tag(s);
299 }
115329f1 300
92f76fbf 301 if (swf->audio_enc && swf->audio_enc->codec_id == CODEC_ID_MP3) {
11dae336 302 int v = 0;
de6d9b64
FB
303
304 /* start sound */
747a0554 305 put_swf_tag(s, TAG_STREAMHEAD2);
92f76fbf 306 switch(swf->audio_enc->sample_rate) {
2aaf590b
BC
307 case 11025: v |= 1 << 2; break;
308 case 22050: v |= 2 << 2; break;
309 case 44100: v |= 3 << 2; break;
de6d9b64
FB
310 default:
311 /* not supported */
755bfeab 312 av_log(s, AV_LOG_ERROR, "swf does not support that sample rate, choose from (44100, 22050, 11025).\n");
de6d9b64
FB
313 return -1;
314 }
747a0554 315 v |= 0x02; /* 16 bit playback */
92f76fbf 316 if (swf->audio_enc->channels == 2)
747a0554 317 v |= 0x01; /* stereo playback */
899681cd 318 put_byte(s->pb, v);
de6d9b64 319 v |= 0x20; /* mp3 compressed */
899681cd
BA
320 put_byte(s->pb, v);
321 put_le16(s->pb, swf->samples_per_frame); /* avg samples per frame */
322 put_le16(s->pb, 0);
115329f1 323
de6d9b64
FB
324 put_swf_end_tag(s);
325 }
326
899681cd 327 put_flush_packet(s->pb);
de6d9b64
FB
328 return 0;
329}
330
115329f1 331static int swf_write_video(AVFormatContext *s,
49057904 332 AVCodecContext *enc, const uint8_t *buf, int size)
de6d9b64 333{
747a0554 334 SWFContext *swf = s->priv_data;
899681cd 335 ByteIOContext *pb = s->pb;
115329f1 336
747a0554 337 /* Flash Player limit */
9caf6781 338 if (swf->swf_frame_number == 16000)
bc874dae 339 av_log(enc, AV_LOG_INFO, "warning: Flash Player limit of 16000 frames reached\n");
de6d9b64 340
92f76fbf
BC
341 if (enc->codec_id == CODEC_ID_VP6F ||
342 enc->codec_id == CODEC_ID_FLV1) {
5fcf2df3 343 if (swf->video_frame_number == 0) {
c78ed542
BC
344 /* create a new video object */
345 put_swf_tag(s, TAG_VIDEOSTREAM);
346 put_le16(pb, VIDEO_ID);
9b92ed76 347 swf->vframes_pos = url_ftell(pb);
5fcf2df3 348 put_le16(pb, 15000); /* hard flash player limit */
c78ed542
BC
349 put_le16(pb, enc->width);
350 put_le16(pb, enc->height);
351 put_byte(pb, 0);
92f76fbf 352 put_byte(pb,codec_get_tag(swf_codec_tags,enc->codec_id));
c78ed542
BC
353 put_swf_end_tag(s);
354
355 /* place the video object for the first time */
356 put_swf_tag(s, TAG_PLACEOBJECT2);
357 put_byte(pb, 0x36);
358 put_le16(pb, 1);
359 put_le16(pb, VIDEO_ID);
360 put_swf_matrix(pb, 1 << FRAC_BITS, 0, 0, 1 << FRAC_BITS, 0, 0);
5fcf2df3 361 put_le16(pb, swf->video_frame_number);
8d4f0e67 362 put_tag(pb, "video");
c78ed542
BC
363 put_byte(pb, 0x00);
364 put_swf_end_tag(s);
365 } else {
366 /* mark the character for update */
367 put_swf_tag(s, TAG_PLACEOBJECT2);
368 put_byte(pb, 0x11);
369 put_le16(pb, 1);
5fcf2df3 370 put_le16(pb, swf->video_frame_number);
c78ed542
BC
371 put_swf_end_tag(s);
372 }
115329f1 373
c78ed542
BC
374 /* set video frame data */
375 put_swf_tag(s, TAG_VIDEOFRAME | TAG_LONG);
376 put_le16(pb, VIDEO_ID);
5fcf2df3 377 put_le16(pb, swf->video_frame_number++);
c78ed542
BC
378 put_buffer(pb, buf, size);
379 put_swf_end_tag(s);
92f76fbf 380 } else if (enc->codec_id == CODEC_ID_MJPEG) {
c78ed542
BC
381 if (swf->swf_frame_number > 0) {
382 /* remove the shape */
383 put_swf_tag(s, TAG_REMOVEOBJECT);
384 put_le16(pb, SHAPE_ID); /* shape ID */
385 put_le16(pb, 1); /* depth */
386 put_swf_end_tag(s);
387
388 /* free the bitmap */
389 put_swf_tag(s, TAG_FREECHARACTER);
390 put_le16(pb, BITMAP_ID);
391 put_swf_end_tag(s);
392 }
115329f1 393
c78ed542 394 put_swf_tag(s, TAG_JPEG2 | TAG_LONG);
115329f1 395
c78ed542 396 put_le16(pb, BITMAP_ID); /* ID of the image */
115329f1 397
c78ed542 398 /* a dummy jpeg header seems to be required */
6ef445fe 399 put_be32(pb, 0xffd8ffd9);
c78ed542
BC
400 /* write the jpeg image */
401 put_buffer(pb, buf, size);
115329f1 402
c78ed542 403 put_swf_end_tag(s);
115329f1 404
c78ed542 405 /* draw the shape */
115329f1 406
c78ed542
BC
407 put_swf_tag(s, TAG_PLACEOBJECT);
408 put_le16(pb, SHAPE_ID); /* shape ID */
409 put_le16(pb, 1); /* depth */
410 put_swf_matrix(pb, 20 << FRAC_BITS, 0, 0, 20 << FRAC_BITS, 0, 0);
411 put_swf_end_tag(s);
c78ed542 412 }
115329f1 413
f2ecb775 414 swf->swf_frame_number++;
de6d9b64 415
747a0554 416 /* streaming sound always should be placed just before showframe tags */
41dd680d
MN
417 if (swf->audio_enc && av_fifo_size(swf->audio_fifo)) {
418 int frame_size = av_fifo_size(swf->audio_fifo);
747a0554 419 put_swf_tag(s, TAG_STREAMBLOCK | TAG_LONG);
013e0a8f
BC
420 put_le16(pb, swf->sound_samples);
421 put_le16(pb, 0); // seek samples
3898eed8 422 av_fifo_generic_read(swf->audio_fifo, pb, frame_size, &put_buffer);
747a0554 423 put_swf_end_tag(s);
115329f1 424
747a0554 425 /* update FIFO */
013e0a8f 426 swf->sound_samples = 0;
747a0554
TU
427 }
428
de6d9b64
FB
429 /* output the frame */
430 put_swf_tag(s, TAG_SHOWFRAME);
431 put_swf_end_tag(s);
115329f1 432
899681cd 433 put_flush_packet(s->pb);
115329f1 434
de6d9b64
FB
435 return 0;
436}
437
115329f1 438static int swf_write_audio(AVFormatContext *s,
6bab4799 439 AVCodecContext *enc, uint8_t *buf, int size)
de6d9b64 440{
747a0554 441 SWFContext *swf = s->priv_data;
de6d9b64 442
747a0554 443 /* Flash Player limit */
9caf6781 444 if (swf->swf_frame_number == 16000)
bc874dae 445 av_log(enc, AV_LOG_INFO, "warning: Flash Player limit of 16000 frames reached\n");
747a0554 446
41dd680d 447 if (av_fifo_size(swf->audio_fifo) + size > AUDIO_FIFO_SIZE) {
013e0a8f
BC
448 av_log(s, AV_LOG_ERROR, "audio fifo too small to mux audio essence\n");
449 return -1;
747a0554
TU
450 }
451
41dd680d 452 av_fifo_generic_write(swf->audio_fifo, buf, size, NULL);
013e0a8f
BC
453 swf->sound_samples += enc->frame_size;
454
747a0554 455 /* if audio only stream make sure we add swf frames */
92f76fbf 456 if (!swf->video_enc)
747a0554 457 swf_write_video(s, enc, 0, 0);
de6d9b64 458
de6d9b64
FB
459 return 0;
460}
461
e928649b 462static int swf_write_packet(AVFormatContext *s, AVPacket *pkt)
de6d9b64 463{
01f4895c 464 AVCodecContext *codec = s->streams[pkt->stream_index]->codec;
de6d9b64 465 if (codec->codec_type == CODEC_TYPE_AUDIO)
e928649b 466 return swf_write_audio(s, codec, pkt->data, pkt->size);
de6d9b64 467 else
e928649b 468 return swf_write_video(s, codec, pkt->data, pkt->size);
de6d9b64
FB
469}
470
471static int swf_write_trailer(AVFormatContext *s)
472{
473 SWFContext *swf = s->priv_data;
899681cd 474 ByteIOContext *pb = s->pb;
de6d9b64
FB
475 AVCodecContext *enc, *video_enc;
476 int file_size, i;
477
478 video_enc = NULL;
479 for(i=0;i<s->nb_streams;i++) {
01f4895c 480 enc = s->streams[i]->codec;
de6d9b64
FB
481 if (enc->codec_type == CODEC_TYPE_VIDEO)
482 video_enc = enc;
ed03be6c 483 else
41dd680d 484 av_fifo_free(swf->audio_fifo);
de6d9b64
FB
485 }
486
487 put_swf_tag(s, TAG_END);
488 put_swf_end_tag(s);
115329f1 489
899681cd 490 put_flush_packet(s->pb);
de6d9b64
FB
491
492 /* patch file size and number of frames if not streamed */
899681cd 493 if (!url_is_streamed(s->pb) && video_enc) {
de6d9b64
FB
494 file_size = url_ftell(pb);
495 url_fseek(pb, 4, SEEK_SET);
496 put_le32(pb, file_size);
497 url_fseek(pb, swf->duration_pos, SEEK_SET);
efb53331 498 put_le16(pb, swf->video_frame_number);
9b92ed76
BC
499 url_fseek(pb, swf->vframes_pos, SEEK_SET);
500 put_le16(pb, swf->video_frame_number);
3439dc95 501 url_fseek(pb, file_size, SEEK_SET);
de6d9b64 502 }
de6d9b64
FB
503 return 0;
504}
de6d9b64 505
b250f9c6 506#if CONFIG_SWF_MUXER
ff70e601 507AVOutputFormat swf_muxer = {
de6d9b64 508 "swf",
bde15e74 509 NULL_IF_CONFIG_SMALL("Flash format"),
de6d9b64
FB
510 "application/x-shockwave-flash",
511 "swf",
c9a65ca8 512 sizeof(SWFContext),
747a0554
TU
513 CODEC_ID_MP3,
514 CODEC_ID_FLV1,
de6d9b64
FB
515 swf_write_header,
516 swf_write_packet,
517 swf_write_trailer,
de6d9b64 518};
ff70e601 519#endif
b250f9c6 520#if CONFIG_AVM2_MUXER
dfb400a8
PE
521AVOutputFormat avm2_muxer = {
522 "avm2",
bde15e74 523 NULL_IF_CONFIG_SMALL("Flash 9 (AVM2) format"),
dfb400a8 524 "application/x-shockwave-flash",
afecbec2 525 NULL,
dfb400a8
PE
526 sizeof(SWFContext),
527 CODEC_ID_MP3,
528 CODEC_ID_FLV1,
529 swf_write_header,
530 swf_write_packet,
531 swf_write_trailer,
532};
533#endif