| 1 | /* |
| 2 | * Flash Compatible Streaming Format demuxer |
| 3 | * Copyright (c) 2000 Fabrice Bellard |
| 4 | * Copyright (c) 2003 Tinic Uro |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #include "libavutil/avassert.h" |
| 24 | #include "libavutil/channel_layout.h" |
| 25 | #include "libavutil/imgutils.h" |
| 26 | #include "libavutil/intreadwrite.h" |
| 27 | #include "swf.h" |
| 28 | |
| 29 | static const AVCodecTag swf_audio_codec_tags[] = { |
| 30 | { AV_CODEC_ID_PCM_S16LE, 0x00 }, |
| 31 | { AV_CODEC_ID_ADPCM_SWF, 0x01 }, |
| 32 | { AV_CODEC_ID_MP3, 0x02 }, |
| 33 | { AV_CODEC_ID_PCM_S16LE, 0x03 }, |
| 34 | // { AV_CODEC_ID_NELLYMOSER, 0x06 }, |
| 35 | { AV_CODEC_ID_NONE, 0 }, |
| 36 | }; |
| 37 | |
| 38 | static int get_swf_tag(AVIOContext *pb, int *len_ptr) |
| 39 | { |
| 40 | int tag, len; |
| 41 | |
| 42 | if (avio_feof(pb)) |
| 43 | return AVERROR_EOF; |
| 44 | |
| 45 | tag = avio_rl16(pb); |
| 46 | len = tag & 0x3f; |
| 47 | tag = tag >> 6; |
| 48 | if (len == 0x3f) { |
| 49 | len = avio_rl32(pb); |
| 50 | } |
| 51 | *len_ptr = len; |
| 52 | return tag; |
| 53 | } |
| 54 | |
| 55 | |
| 56 | static int swf_probe(AVProbeData *p) |
| 57 | { |
| 58 | if(p->buf_size < 15) |
| 59 | return 0; |
| 60 | |
| 61 | /* check file header */ |
| 62 | if ( AV_RB24(p->buf) != AV_RB24("CWS") |
| 63 | && AV_RB24(p->buf) != AV_RB24("FWS")) |
| 64 | return 0; |
| 65 | |
| 66 | if (p->buf[3] >= 20) |
| 67 | return AVPROBE_SCORE_MAX / 4; |
| 68 | |
| 69 | return AVPROBE_SCORE_MAX; |
| 70 | } |
| 71 | |
| 72 | #if CONFIG_ZLIB |
| 73 | static int zlib_refill(void *opaque, uint8_t *buf, int buf_size) |
| 74 | { |
| 75 | AVFormatContext *s = opaque; |
| 76 | SWFContext *swf = s->priv_data; |
| 77 | z_stream *z = &swf->zstream; |
| 78 | int ret; |
| 79 | |
| 80 | retry: |
| 81 | if (!z->avail_in) { |
| 82 | int n = avio_read(s->pb, swf->zbuf_in, ZBUF_SIZE); |
| 83 | if (n < 0) |
| 84 | return n; |
| 85 | z->next_in = swf->zbuf_in; |
| 86 | z->avail_in = n; |
| 87 | } |
| 88 | |
| 89 | z->next_out = buf; |
| 90 | z->avail_out = buf_size; |
| 91 | |
| 92 | ret = inflate(z, Z_NO_FLUSH); |
| 93 | if (ret < 0) |
| 94 | return AVERROR(EINVAL); |
| 95 | if (ret == Z_STREAM_END) |
| 96 | return AVERROR_EOF; |
| 97 | |
| 98 | if (buf_size - z->avail_out == 0) |
| 99 | goto retry; |
| 100 | |
| 101 | return buf_size - z->avail_out; |
| 102 | } |
| 103 | #endif |
| 104 | |
| 105 | static int swf_read_header(AVFormatContext *s) |
| 106 | { |
| 107 | SWFContext *swf = s->priv_data; |
| 108 | AVIOContext *pb = s->pb; |
| 109 | int nbits, len, tag; |
| 110 | |
| 111 | tag = avio_rb32(pb) & 0xffffff00; |
| 112 | avio_rl32(pb); |
| 113 | |
| 114 | if (tag == MKBETAG('C', 'W', 'S', 0)) { |
| 115 | av_log(s, AV_LOG_INFO, "SWF compressed file detected\n"); |
| 116 | #if CONFIG_ZLIB |
| 117 | swf->zbuf_in = av_malloc(ZBUF_SIZE); |
| 118 | swf->zbuf_out = av_malloc(ZBUF_SIZE); |
| 119 | swf->zpb = avio_alloc_context(swf->zbuf_out, ZBUF_SIZE, 0, s, |
| 120 | zlib_refill, NULL, NULL); |
| 121 | if (!swf->zbuf_in || !swf->zbuf_out || !swf->zpb) |
| 122 | return AVERROR(ENOMEM); |
| 123 | swf->zpb->seekable = 0; |
| 124 | if (inflateInit(&swf->zstream) != Z_OK) { |
| 125 | av_log(s, AV_LOG_ERROR, "Unable to init zlib context\n"); |
| 126 | return AVERROR(EINVAL); |
| 127 | } |
| 128 | pb = swf->zpb; |
| 129 | #else |
| 130 | av_log(s, AV_LOG_ERROR, "zlib support is required to read SWF compressed files\n"); |
| 131 | return AVERROR(EIO); |
| 132 | #endif |
| 133 | } else if (tag != MKBETAG('F', 'W', 'S', 0)) |
| 134 | return AVERROR(EIO); |
| 135 | /* skip rectangle size */ |
| 136 | nbits = avio_r8(pb) >> 3; |
| 137 | len = (4 * nbits - 3 + 7) / 8; |
| 138 | avio_skip(pb, len); |
| 139 | swf->frame_rate = avio_rl16(pb); /* 8.8 fixed */ |
| 140 | avio_rl16(pb); /* frame count */ |
| 141 | |
| 142 | swf->samples_per_frame = 0; |
| 143 | s->ctx_flags |= AVFMTCTX_NOHEADER; |
| 144 | return 0; |
| 145 | } |
| 146 | |
| 147 | static AVStream *create_new_audio_stream(AVFormatContext *s, int id, int info) |
| 148 | { |
| 149 | int sample_rate_code, sample_size_code; |
| 150 | AVStream *ast = avformat_new_stream(s, NULL); |
| 151 | if (!ast) |
| 152 | return NULL; |
| 153 | ast->id = id; |
| 154 | if (info & 1) { |
| 155 | ast->codec->channels = 2; |
| 156 | ast->codec->channel_layout = AV_CH_LAYOUT_STEREO; |
| 157 | } else { |
| 158 | ast->codec->channels = 1; |
| 159 | ast->codec->channel_layout = AV_CH_LAYOUT_MONO; |
| 160 | } |
| 161 | ast->codec->codec_type = AVMEDIA_TYPE_AUDIO; |
| 162 | ast->codec->codec_id = ff_codec_get_id(swf_audio_codec_tags, info>>4 & 15); |
| 163 | ast->need_parsing = AVSTREAM_PARSE_FULL; |
| 164 | sample_rate_code = info>>2 & 3; |
| 165 | sample_size_code = info>>1 & 1; |
| 166 | if (!sample_size_code && ast->codec->codec_id == AV_CODEC_ID_PCM_S16LE) |
| 167 | ast->codec->codec_id = AV_CODEC_ID_PCM_U8; |
| 168 | ast->codec->sample_rate = 44100 >> (3 - sample_rate_code); |
| 169 | avpriv_set_pts_info(ast, 64, 1, ast->codec->sample_rate); |
| 170 | return ast; |
| 171 | } |
| 172 | |
| 173 | static int swf_read_packet(AVFormatContext *s, AVPacket *pkt) |
| 174 | { |
| 175 | SWFContext *swf = s->priv_data; |
| 176 | AVIOContext *pb = s->pb; |
| 177 | AVStream *vst = NULL, *ast = NULL, *st = 0; |
| 178 | int tag, len, i, frame, v, res; |
| 179 | |
| 180 | #if CONFIG_ZLIB |
| 181 | if (swf->zpb) |
| 182 | pb = swf->zpb; |
| 183 | #endif |
| 184 | |
| 185 | for(;;) { |
| 186 | uint64_t pos = avio_tell(pb); |
| 187 | tag = get_swf_tag(pb, &len); |
| 188 | if (tag < 0) |
| 189 | return tag; |
| 190 | if (len < 0) { |
| 191 | av_log(s, AV_LOG_ERROR, "invalid tag length: %d\n", len); |
| 192 | return AVERROR_INVALIDDATA; |
| 193 | } |
| 194 | if (tag == TAG_VIDEOSTREAM) { |
| 195 | int ch_id = avio_rl16(pb); |
| 196 | len -= 2; |
| 197 | |
| 198 | for (i=0; i<s->nb_streams; i++) { |
| 199 | st = s->streams[i]; |
| 200 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->id == ch_id) |
| 201 | goto skip; |
| 202 | } |
| 203 | |
| 204 | avio_rl16(pb); |
| 205 | avio_rl16(pb); |
| 206 | avio_rl16(pb); |
| 207 | avio_r8(pb); |
| 208 | /* Check for FLV1 */ |
| 209 | vst = avformat_new_stream(s, NULL); |
| 210 | if (!vst) |
| 211 | return AVERROR(ENOMEM); |
| 212 | vst->id = ch_id; |
| 213 | vst->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
| 214 | vst->codec->codec_id = ff_codec_get_id(ff_swf_codec_tags, avio_r8(pb)); |
| 215 | avpriv_set_pts_info(vst, 16, 256, swf->frame_rate); |
| 216 | len -= 8; |
| 217 | } else if (tag == TAG_STREAMHEAD || tag == TAG_STREAMHEAD2) { |
| 218 | /* streaming found */ |
| 219 | |
| 220 | for (i=0; i<s->nb_streams; i++) { |
| 221 | st = s->streams[i]; |
| 222 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->id == -1) |
| 223 | goto skip; |
| 224 | } |
| 225 | |
| 226 | avio_r8(pb); |
| 227 | v = avio_r8(pb); |
| 228 | swf->samples_per_frame = avio_rl16(pb); |
| 229 | ast = create_new_audio_stream(s, -1, v); /* -1 to avoid clash with video stream ch_id */ |
| 230 | if (!ast) |
| 231 | return AVERROR(ENOMEM); |
| 232 | len -= 4; |
| 233 | } else if (tag == TAG_DEFINESOUND) { |
| 234 | /* audio stream */ |
| 235 | int ch_id = avio_rl16(pb); |
| 236 | |
| 237 | for (i=0; i<s->nb_streams; i++) { |
| 238 | st = s->streams[i]; |
| 239 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->id == ch_id) |
| 240 | goto skip; |
| 241 | } |
| 242 | |
| 243 | // FIXME: The entire audio stream is stored in a single chunk/tag. Normally, |
| 244 | // these are smaller audio streams in DEFINESOUND tags, but it's technically |
| 245 | // possible they could be huge. Break it up into multiple packets if it's big. |
| 246 | v = avio_r8(pb); |
| 247 | ast = create_new_audio_stream(s, ch_id, v); |
| 248 | if (!ast) |
| 249 | return AVERROR(ENOMEM); |
| 250 | ast->duration = avio_rl32(pb); // number of samples |
| 251 | if (((v>>4) & 15) == 2) { // MP3 sound data record |
| 252 | ast->skip_samples = avio_rl16(pb); |
| 253 | len -= 2; |
| 254 | } |
| 255 | len -= 7; |
| 256 | if ((res = av_get_packet(pb, pkt, len)) < 0) |
| 257 | return res; |
| 258 | pkt->pos = pos; |
| 259 | pkt->stream_index = ast->index; |
| 260 | return pkt->size; |
| 261 | } else if (tag == TAG_VIDEOFRAME) { |
| 262 | int ch_id = avio_rl16(pb); |
| 263 | len -= 2; |
| 264 | for(i=0; i<s->nb_streams; i++) { |
| 265 | st = s->streams[i]; |
| 266 | if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && st->id == ch_id) { |
| 267 | frame = avio_rl16(pb); |
| 268 | len -= 2; |
| 269 | if (len <= 0) |
| 270 | goto skip; |
| 271 | if ((res = av_get_packet(pb, pkt, len)) < 0) |
| 272 | return res; |
| 273 | pkt->pos = pos; |
| 274 | pkt->pts = frame; |
| 275 | pkt->stream_index = st->index; |
| 276 | return pkt->size; |
| 277 | } |
| 278 | } |
| 279 | } else if (tag == TAG_DEFINEBITSLOSSLESS || tag == TAG_DEFINEBITSLOSSLESS2) { |
| 280 | #if CONFIG_ZLIB |
| 281 | long out_len; |
| 282 | uint8_t *buf = NULL, *zbuf = NULL, *pal; |
| 283 | uint32_t colormap[AVPALETTE_COUNT] = {0}; |
| 284 | const int alpha_bmp = tag == TAG_DEFINEBITSLOSSLESS2; |
| 285 | const int colormapbpp = 3 + alpha_bmp; |
| 286 | int linesize, colormapsize = 0; |
| 287 | |
| 288 | const int ch_id = avio_rl16(pb); |
| 289 | const int bmp_fmt = avio_r8(pb); |
| 290 | const int width = avio_rl16(pb); |
| 291 | const int height = avio_rl16(pb); |
| 292 | int pix_fmt; |
| 293 | |
| 294 | len -= 2+1+2+2; |
| 295 | |
| 296 | switch (bmp_fmt) { |
| 297 | case 3: // PAL-8 |
| 298 | linesize = width; |
| 299 | colormapsize = avio_r8(pb) + 1; |
| 300 | len--; |
| 301 | break; |
| 302 | case 4: // RGB15 |
| 303 | linesize = width * 2; |
| 304 | break; |
| 305 | case 5: // RGB24 (0RGB) |
| 306 | linesize = width * 4; |
| 307 | break; |
| 308 | default: |
| 309 | av_log(s, AV_LOG_ERROR, "invalid bitmap format %d, skipped\n", bmp_fmt); |
| 310 | goto bitmap_end_skip; |
| 311 | } |
| 312 | |
| 313 | linesize = FFALIGN(linesize, 4); |
| 314 | |
| 315 | if (av_image_check_size(width, height, 0, s) < 0 || |
| 316 | linesize >= INT_MAX / height || |
| 317 | linesize * height >= INT_MAX - colormapsize * colormapbpp) { |
| 318 | av_log(s, AV_LOG_ERROR, "invalid frame size %dx%d\n", width, height); |
| 319 | goto bitmap_end_skip; |
| 320 | } |
| 321 | |
| 322 | out_len = colormapsize * colormapbpp + linesize * height; |
| 323 | |
| 324 | av_dlog(s, "bitmap: ch=%d fmt=%d %dx%d (linesize=%d) len=%d->%ld pal=%d\n", |
| 325 | ch_id, bmp_fmt, width, height, linesize, len, out_len, colormapsize); |
| 326 | |
| 327 | zbuf = av_malloc(len); |
| 328 | buf = av_malloc(out_len); |
| 329 | if (!zbuf || !buf) { |
| 330 | res = AVERROR(ENOMEM); |
| 331 | goto bitmap_end; |
| 332 | } |
| 333 | |
| 334 | len = avio_read(pb, zbuf, len); |
| 335 | if (len < 0 || (res = uncompress(buf, &out_len, zbuf, len)) != Z_OK) { |
| 336 | av_log(s, AV_LOG_WARNING, "Failed to uncompress one bitmap\n"); |
| 337 | goto bitmap_end_skip; |
| 338 | } |
| 339 | |
| 340 | for (i = 0; i < s->nb_streams; i++) { |
| 341 | st = s->streams[i]; |
| 342 | if (st->codec->codec_id == AV_CODEC_ID_RAWVIDEO && st->id == -3) |
| 343 | break; |
| 344 | } |
| 345 | if (i == s->nb_streams) { |
| 346 | vst = avformat_new_stream(s, NULL); |
| 347 | if (!vst) { |
| 348 | res = AVERROR(ENOMEM); |
| 349 | goto bitmap_end; |
| 350 | } |
| 351 | vst->id = -3; /* -3 to avoid clash with video stream and audio stream */ |
| 352 | vst->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
| 353 | vst->codec->codec_id = AV_CODEC_ID_RAWVIDEO; |
| 354 | avpriv_set_pts_info(vst, 64, 256, swf->frame_rate); |
| 355 | st = vst; |
| 356 | } |
| 357 | |
| 358 | if ((res = av_new_packet(pkt, out_len - colormapsize * colormapbpp)) < 0) |
| 359 | goto bitmap_end; |
| 360 | if (!st->codec->width && !st->codec->height) { |
| 361 | st->codec->width = width; |
| 362 | st->codec->height = height; |
| 363 | } else { |
| 364 | ff_add_param_change(pkt, 0, 0, 0, width, height); |
| 365 | } |
| 366 | pkt->pos = pos; |
| 367 | pkt->stream_index = st->index; |
| 368 | |
| 369 | switch (bmp_fmt) { |
| 370 | case 3: |
| 371 | pix_fmt = AV_PIX_FMT_PAL8; |
| 372 | for (i = 0; i < colormapsize; i++) |
| 373 | if (alpha_bmp) colormap[i] = buf[3]<<24 | AV_RB24(buf + 4*i); |
| 374 | else colormap[i] = 0xffU <<24 | AV_RB24(buf + 3*i); |
| 375 | pal = av_packet_new_side_data(pkt, AV_PKT_DATA_PALETTE, AVPALETTE_SIZE); |
| 376 | if (!pal) { |
| 377 | res = AVERROR(ENOMEM); |
| 378 | goto bitmap_end; |
| 379 | } |
| 380 | memcpy(pal, colormap, AVPALETTE_SIZE); |
| 381 | break; |
| 382 | case 4: |
| 383 | pix_fmt = AV_PIX_FMT_RGB555; |
| 384 | break; |
| 385 | case 5: |
| 386 | pix_fmt = alpha_bmp ? AV_PIX_FMT_ARGB : AV_PIX_FMT_0RGB; |
| 387 | break; |
| 388 | default: |
| 389 | av_assert0(0); |
| 390 | } |
| 391 | if (st->codec->pix_fmt != AV_PIX_FMT_NONE && st->codec->pix_fmt != pix_fmt) { |
| 392 | av_log(s, AV_LOG_ERROR, "pixel format change unsupported\n"); |
| 393 | res = AVERROR_PATCHWELCOME; |
| 394 | goto bitmap_end; |
| 395 | } |
| 396 | st->codec->pix_fmt = pix_fmt; |
| 397 | |
| 398 | if (linesize * height > pkt->size) { |
| 399 | res = AVERROR_INVALIDDATA; |
| 400 | goto bitmap_end; |
| 401 | } |
| 402 | memcpy(pkt->data, buf + colormapsize*colormapbpp, linesize * height); |
| 403 | |
| 404 | res = pkt->size; |
| 405 | |
| 406 | bitmap_end: |
| 407 | av_freep(&zbuf); |
| 408 | av_freep(&buf); |
| 409 | return res; |
| 410 | bitmap_end_skip: |
| 411 | av_freep(&zbuf); |
| 412 | av_freep(&buf); |
| 413 | #else |
| 414 | av_log(s, AV_LOG_ERROR, "this file requires zlib support compiled in\n"); |
| 415 | #endif |
| 416 | } else if (tag == TAG_STREAMBLOCK) { |
| 417 | for (i = 0; i < s->nb_streams; i++) { |
| 418 | st = s->streams[i]; |
| 419 | if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO && st->id == -1) { |
| 420 | if (st->codec->codec_id == AV_CODEC_ID_MP3) { |
| 421 | avio_skip(pb, 4); |
| 422 | len -= 4; |
| 423 | if (len <= 0) |
| 424 | goto skip; |
| 425 | if ((res = av_get_packet(pb, pkt, len)) < 0) |
| 426 | return res; |
| 427 | } else { // ADPCM, PCM |
| 428 | if (len <= 0) |
| 429 | goto skip; |
| 430 | if ((res = av_get_packet(pb, pkt, len)) < 0) |
| 431 | return res; |
| 432 | } |
| 433 | pkt->pos = pos; |
| 434 | pkt->stream_index = st->index; |
| 435 | return pkt->size; |
| 436 | } |
| 437 | } |
| 438 | } else if (tag == TAG_JPEG2) { |
| 439 | for (i=0; i<s->nb_streams; i++) { |
| 440 | st = s->streams[i]; |
| 441 | if (st->codec->codec_id == AV_CODEC_ID_MJPEG && st->id == -2) |
| 442 | break; |
| 443 | } |
| 444 | if (i == s->nb_streams) { |
| 445 | vst = avformat_new_stream(s, NULL); |
| 446 | if (!vst) |
| 447 | return AVERROR(ENOMEM); |
| 448 | vst->id = -2; /* -2 to avoid clash with video stream and audio stream */ |
| 449 | vst->codec->codec_type = AVMEDIA_TYPE_VIDEO; |
| 450 | vst->codec->codec_id = AV_CODEC_ID_MJPEG; |
| 451 | avpriv_set_pts_info(vst, 64, 256, swf->frame_rate); |
| 452 | st = vst; |
| 453 | } |
| 454 | avio_rl16(pb); /* BITMAP_ID */ |
| 455 | len -= 2; |
| 456 | if (len < 4) |
| 457 | goto skip; |
| 458 | if ((res = av_new_packet(pkt, len)) < 0) |
| 459 | return res; |
| 460 | if (avio_read(pb, pkt->data, 4) != 4) { |
| 461 | av_free_packet(pkt); |
| 462 | return AVERROR_INVALIDDATA; |
| 463 | } |
| 464 | if (AV_RB32(pkt->data) == 0xffd8ffd9 || |
| 465 | AV_RB32(pkt->data) == 0xffd9ffd8) { |
| 466 | /* old SWF files containing SOI/EOI as data start */ |
| 467 | /* files created by swink have reversed tag */ |
| 468 | pkt->size -= 4; |
| 469 | memset(pkt->data+pkt->size, 0, 4); |
| 470 | res = avio_read(pb, pkt->data, pkt->size); |
| 471 | } else { |
| 472 | res = avio_read(pb, pkt->data + 4, pkt->size - 4); |
| 473 | if (res >= 0) |
| 474 | res += 4; |
| 475 | } |
| 476 | if (res != pkt->size) { |
| 477 | if (res < 0) { |
| 478 | av_free_packet(pkt); |
| 479 | return res; |
| 480 | } |
| 481 | av_shrink_packet(pkt, res); |
| 482 | } |
| 483 | |
| 484 | pkt->pos = pos; |
| 485 | pkt->stream_index = st->index; |
| 486 | return pkt->size; |
| 487 | } else { |
| 488 | av_log(s, AV_LOG_DEBUG, "Unknown tag: %d\n", tag); |
| 489 | } |
| 490 | skip: |
| 491 | if(len<0) |
| 492 | av_log(s, AV_LOG_WARNING, "Cliping len %d\n", len); |
| 493 | len = FFMAX(0, len); |
| 494 | avio_skip(pb, len); |
| 495 | } |
| 496 | } |
| 497 | |
| 498 | #if CONFIG_ZLIB |
| 499 | static av_cold int swf_read_close(AVFormatContext *avctx) |
| 500 | { |
| 501 | SWFContext *s = avctx->priv_data; |
| 502 | inflateEnd(&s->zstream); |
| 503 | av_freep(&s->zbuf_in); |
| 504 | av_freep(&s->zbuf_out); |
| 505 | av_freep(&s->zpb); |
| 506 | return 0; |
| 507 | } |
| 508 | #endif |
| 509 | |
| 510 | AVInputFormat ff_swf_demuxer = { |
| 511 | .name = "swf", |
| 512 | .long_name = NULL_IF_CONFIG_SMALL("SWF (ShockWave Flash)"), |
| 513 | .priv_data_size = sizeof(SWFContext), |
| 514 | .read_probe = swf_probe, |
| 515 | .read_header = swf_read_header, |
| 516 | .read_packet = swf_read_packet, |
| 517 | #if CONFIG_ZLIB |
| 518 | .read_close = swf_read_close, |
| 519 | #endif |
| 520 | }; |