1/* 2 * utils for libavcodec 3 * Copyright (c) 2001 Fabrice Bellard 4 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> 5 * 6 * This file is part of Libav. 7 * 8 * Libav 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 * Libav 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 Libav; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23/** 24 * @file 25 * utils. 26 */ 27 28#include "libavutil/avassert.h" 29#include "libavutil/avstring.h" 30#include "libavutil/crc.h" 31#include "libavutil/mathematics.h" 32#include "libavutil/pixdesc.h" 33#include "libavutil/audioconvert.h" 34#include "libavutil/imgutils.h" 35#include "libavutil/samplefmt.h" 36#include "libavutil/dict.h" 37#include "avcodec.h" 38#include "dsputil.h" 39#include "libavutil/opt.h" 40#include "imgconvert.h" 41#include "thread.h" 42#include "audioconvert.h" 43#include "internal.h" 44#include "bytestream.h" 45#include <stdlib.h> 46#include <stdarg.h> 47#include <limits.h> 48#include <float.h> 49 50static int volatile entangled_thread_counter=0; 51static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op); 52static void *codec_mutex; 53static void *avformat_mutex; 54 55void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size) 56{ 57 if(min_size < *size) 58 return ptr; 59 60 min_size= FFMAX(17*min_size/16 + 32, min_size); 61 62 ptr= av_realloc(ptr, min_size); 63 if(!ptr) //we could set this to the unmodified min_size but this is safer if the user lost the ptr and uses NULL now 64 min_size= 0; 65 66 *size= min_size; 67 68 return ptr; 69} 70 71void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size) 72{ 73 void **p = ptr; 74 if (min_size < *size) 75 return; 76 min_size= FFMAX(17*min_size/16 + 32, min_size); 77 av_free(*p); 78 *p = av_malloc(min_size); 79 if (!*p) min_size = 0; 80 *size= min_size; 81} 82 83/* encoder management */ 84static AVCodec *first_avcodec = NULL; 85 86AVCodec *av_codec_next(AVCodec *c){ 87 if(c) return c->next; 88 else return first_avcodec; 89} 90 91#if !FF_API_AVCODEC_INIT 92static 93#endif 94void avcodec_init(void) 95{ 96 static int initialized = 0; 97 98 if (initialized != 0) 99 return; 100 initialized = 1; 101 102 dsputil_static_init(); 103} 104 105static av_always_inline int codec_is_encoder(AVCodec *codec) 106{ 107 return codec && (codec->encode || codec->encode2); 108} 109 110static av_always_inline int codec_is_decoder(AVCodec *codec) 111{ 112 return codec && codec->decode; 113} 114 115void avcodec_register(AVCodec *codec) 116{ 117 AVCodec **p; 118 avcodec_init(); 119 p = &first_avcodec; 120 while (*p != NULL) p = &(*p)->next; 121 *p = codec; 122 codec->next = NULL; 123 124 if (codec->init_static_data) 125 codec->init_static_data(codec); 126} 127 128unsigned avcodec_get_edge_width(void) 129{ 130 return EDGE_WIDTH; 131} 132 133void avcodec_set_dimensions(AVCodecContext *s, int width, int height){ 134 s->coded_width = width; 135 s->coded_height= height; 136 s->width = -((-width )>>s->lowres); 137 s->height= -((-height)>>s->lowres); 138} 139 140#define INTERNAL_BUFFER_SIZE (32+1) 141 142void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, 143 int linesize_align[AV_NUM_DATA_POINTERS]) 144{ 145 int i; 146 int w_align= 1; 147 int h_align= 1; 148 149 switch(s->pix_fmt){ 150 case PIX_FMT_YUV420P: 151 case PIX_FMT_YUYV422: 152 case PIX_FMT_UYVY422: 153 case PIX_FMT_YUV422P: 154 case PIX_FMT_YUV440P: 155 case PIX_FMT_YUV444P: 156 case PIX_FMT_GBRP: 157 case PIX_FMT_GRAY8: 158 case PIX_FMT_GRAY16BE: 159 case PIX_FMT_GRAY16LE: 160 case PIX_FMT_YUVJ420P: 161 case PIX_FMT_YUVJ422P: 162 case PIX_FMT_YUVJ440P: 163 case PIX_FMT_YUVJ444P: 164 case PIX_FMT_YUVA420P: 165 case PIX_FMT_YUV420P9LE: 166 case PIX_FMT_YUV420P9BE: 167 case PIX_FMT_YUV420P10LE: 168 case PIX_FMT_YUV420P10BE: 169 case PIX_FMT_YUV422P9LE: 170 case PIX_FMT_YUV422P9BE: 171 case PIX_FMT_YUV422P10LE: 172 case PIX_FMT_YUV422P10BE: 173 case PIX_FMT_YUV444P9LE: 174 case PIX_FMT_YUV444P9BE: 175 case PIX_FMT_YUV444P10LE: 176 case PIX_FMT_YUV444P10BE: 177 case PIX_FMT_GBRP9LE: 178 case PIX_FMT_GBRP9BE: 179 case PIX_FMT_GBRP10LE: 180 case PIX_FMT_GBRP10BE: 181 w_align = 16; //FIXME assume 16 pixel per macroblock 182 h_align = 16 * 2; // interlaced needs 2 macroblocks height 183 break; 184 case PIX_FMT_YUV411P: 185 case PIX_FMT_UYYVYY411: 186 w_align=32; 187 h_align=8; 188 break; 189 case PIX_FMT_YUV410P: 190 if(s->codec_id == CODEC_ID_SVQ1){ 191 w_align=64; 192 h_align=64; 193 } 194 case PIX_FMT_RGB555: 195 if(s->codec_id == CODEC_ID_RPZA){ 196 w_align=4; 197 h_align=4; 198 } 199 case PIX_FMT_PAL8: 200 case PIX_FMT_BGR8: 201 case PIX_FMT_RGB8: 202 if(s->codec_id == CODEC_ID_SMC){ 203 w_align=4; 204 h_align=4; 205 } 206 break; 207 case PIX_FMT_BGR24: 208 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){ 209 w_align=4; 210 h_align=4; 211 } 212 break; 213 default: 214 w_align= 1; 215 h_align= 1; 216 break; 217 } 218 219 *width = FFALIGN(*width , w_align); 220 *height= FFALIGN(*height, h_align); 221 if(s->codec_id == CODEC_ID_H264 || s->lowres) 222 *height+=2; // some of the optimized chroma MC reads one line too much 223 // which is also done in mpeg decoders with lowres > 0 224 225 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) 226 linesize_align[i] = STRIDE_ALIGN; 227//STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes 228//we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the 229//picture size unneccessarily in some cases. The solution here is not 230//pretty and better ideas are welcome! 231#if HAVE_MMX 232 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 || 233 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F || 234 s->codec_id == CODEC_ID_VP6A) { 235 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) 236 linesize_align[i] = 16; 237 } 238#endif 239} 240 241void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){ 242 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w; 243 int linesize_align[AV_NUM_DATA_POINTERS]; 244 int align; 245 avcodec_align_dimensions2(s, width, height, linesize_align); 246 align = FFMAX(linesize_align[0], linesize_align[3]); 247 linesize_align[1] <<= chroma_shift; 248 linesize_align[2] <<= chroma_shift; 249 align = FFMAX3(align, linesize_align[1], linesize_align[2]); 250 *width=FFALIGN(*width, align); 251} 252 253int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, 254 enum AVSampleFormat sample_fmt, const uint8_t *buf, 255 int buf_size, int align) 256{ 257 int ch, planar, needed_size, ret = 0; 258 259 needed_size = av_samples_get_buffer_size(NULL, nb_channels, 260 frame->nb_samples, sample_fmt, 261 align); 262 if (buf_size < needed_size) 263 return AVERROR(EINVAL); 264 265 planar = av_sample_fmt_is_planar(sample_fmt); 266 if (planar && nb_channels > AV_NUM_DATA_POINTERS) { 267 if (!(frame->extended_data = av_mallocz(nb_channels * 268 sizeof(*frame->extended_data)))) 269 return AVERROR(ENOMEM); 270 } else { 271 frame->extended_data = frame->data; 272 } 273 274 if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0], 275 buf, nb_channels, frame->nb_samples, 276 sample_fmt, align)) < 0) { 277 if (frame->extended_data != frame->data) 278 av_free(frame->extended_data); 279 return ret; 280 } 281 if (frame->extended_data != frame->data) { 282 for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++) 283 frame->data[ch] = frame->extended_data[ch]; 284 } 285 286 return ret; 287} 288 289static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame) 290{ 291 AVCodecInternal *avci = avctx->internal; 292 InternalBuffer *buf; 293 int buf_size, ret; 294 295 buf_size = av_samples_get_buffer_size(NULL, avctx->channels, 296 frame->nb_samples, avctx->sample_fmt, 297 32); 298 if (buf_size < 0) 299 return AVERROR(EINVAL); 300 301 /* allocate InternalBuffer if needed */ 302 if (!avci->buffer) { 303 avci->buffer = av_mallocz(sizeof(InternalBuffer)); 304 if (!avci->buffer) 305 return AVERROR(ENOMEM); 306 } 307 buf = avci->buffer; 308 309 /* if there is a previously-used internal buffer, check its size and 310 channel count to see if we can reuse it */ 311 if (buf->extended_data) { 312 /* if current buffer is too small, free it */ 313 if (buf->extended_data[0] && buf_size > buf->audio_data_size) { 314 av_free(buf->extended_data[0]); 315 if (buf->extended_data != buf->data) 316 av_free(&buf->extended_data); 317 buf->extended_data = NULL; 318 buf->data[0] = NULL; 319 } 320 /* if number of channels has changed, reset and/or free extended data 321 pointers but leave data buffer in buf->data[0] for reuse */ 322 if (buf->nb_channels != avctx->channels) { 323 if (buf->extended_data != buf->data) 324 av_free(buf->extended_data); 325 buf->extended_data = NULL; 326 } 327 } 328 329 /* if there is no previous buffer or the previous buffer cannot be used 330 as-is, allocate a new buffer and/or rearrange the channel pointers */ 331 if (!buf->extended_data) { 332 if (!buf->data[0]) { 333 if (!(buf->data[0] = av_mallocz(buf_size))) 334 return AVERROR(ENOMEM); 335 buf->audio_data_size = buf_size; 336 } 337 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels, 338 avctx->sample_fmt, buf->data[0], 339 buf->audio_data_size, 32))) 340 return ret; 341 342 if (frame->extended_data == frame->data) 343 buf->extended_data = buf->data; 344 else 345 buf->extended_data = frame->extended_data; 346 memcpy(buf->data, frame->data, sizeof(frame->data)); 347 buf->linesize[0] = frame->linesize[0]; 348 buf->nb_channels = avctx->channels; 349 } else { 350 /* copy InternalBuffer info to the AVFrame */ 351 frame->extended_data = buf->extended_data; 352 frame->linesize[0] = buf->linesize[0]; 353 memcpy(frame->data, buf->data, sizeof(frame->data)); 354 } 355 356 frame->type = FF_BUFFER_TYPE_INTERNAL; 357 358 if (avctx->pkt) frame->pkt_pts = avctx->pkt->pts; 359 else frame->pkt_pts = AV_NOPTS_VALUE; 360 frame->reordered_opaque = avctx->reordered_opaque; 361 362 if (avctx->debug & FF_DEBUG_BUFFERS) 363 av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, " 364 "internal audio buffer used\n", frame); 365 366 return 0; 367} 368 369static int video_get_buffer(AVCodecContext *s, AVFrame *pic) 370{ 371 int i; 372 int w= s->width; 373 int h= s->height; 374 InternalBuffer *buf; 375 AVCodecInternal *avci = s->internal; 376 377 if(pic->data[0]!=NULL) { 378 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n"); 379 return -1; 380 } 381 if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) { 382 av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n"); 383 return -1; 384 } 385 386 if(av_image_check_size(w, h, 0, s)) 387 return -1; 388 389 if (!avci->buffer) { 390 avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) * 391 sizeof(InternalBuffer)); 392 } 393 394 buf = &avci->buffer[avci->buffer_count]; 395 396 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){ 397 if(s->active_thread_type&FF_THREAD_FRAME) { 398 av_log_missing_feature(s, "Width/height changing with frame threads is", 0); 399 return -1; 400 } 401 402 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) { 403 av_freep(&buf->base[i]); 404 buf->data[i]= NULL; 405 } 406 } 407 408 if (!buf->base[0]) { 409 int h_chroma_shift, v_chroma_shift; 410 int size[4] = {0}; 411 int tmpsize; 412 int unaligned; 413 AVPicture picture; 414 int stride_align[AV_NUM_DATA_POINTERS]; 415 const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1; 416 417 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift); 418 419 avcodec_align_dimensions2(s, &w, &h, stride_align); 420 421 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){ 422 w+= EDGE_WIDTH*2; 423 h+= EDGE_WIDTH*2; 424 } 425 426 do { 427 // NOTE: do not align linesizes individually, this breaks e.g. assumptions 428 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2 429 av_image_fill_linesizes(picture.linesize, s->pix_fmt, w); 430 // increase alignment of w for next try (rhs gives the lowest bit set in w) 431 w += w & ~(w-1); 432 433 unaligned = 0; 434 for (i=0; i<4; i++){ 435 unaligned |= picture.linesize[i] % stride_align[i]; 436 } 437 } while (unaligned); 438 439 tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize); 440 if (tmpsize < 0) 441 return -1; 442 443 for (i=0; i<3 && picture.data[i+1]; i++) 444 size[i] = picture.data[i+1] - picture.data[i]; 445 size[i] = tmpsize - (picture.data[i] - picture.data[0]); 446 447 memset(buf->base, 0, sizeof(buf->base)); 448 memset(buf->data, 0, sizeof(buf->data)); 449 450 for(i=0; i<4 && size[i]; i++){ 451 const int h_shift= i==0 ? 0 : h_chroma_shift; 452 const int v_shift= i==0 ? 0 : v_chroma_shift; 453 454 buf->linesize[i]= picture.linesize[i]; 455 456 buf->base[i]= av_malloc(size[i]+16); //FIXME 16 457 if(buf->base[i]==NULL) return -1; 458 memset(buf->base[i], 128, size[i]); 459 460 // no edge if EDGE EMU or not planar YUV 461 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2]) 462 buf->data[i] = buf->base[i]; 463 else 464 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]); 465 } 466 for (; i < AV_NUM_DATA_POINTERS; i++) { 467 buf->base[i] = buf->data[i] = NULL; 468 buf->linesize[i] = 0; 469 } 470 if(size[1] && !size[2]) 471 ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt); 472 buf->width = s->width; 473 buf->height = s->height; 474 buf->pix_fmt= s->pix_fmt; 475 } 476 pic->type= FF_BUFFER_TYPE_INTERNAL; 477 478 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) { 479 pic->base[i]= buf->base[i]; 480 pic->data[i]= buf->data[i]; 481 pic->linesize[i]= buf->linesize[i]; 482 } 483 pic->extended_data = pic->data; 484 avci->buffer_count++; 485 486 if(s->pkt) pic->pkt_pts= s->pkt->pts; 487 else pic->pkt_pts= AV_NOPTS_VALUE; 488 pic->reordered_opaque= s->reordered_opaque; 489 490 if(s->debug&FF_DEBUG_BUFFERS) 491 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d " 492 "buffers used\n", pic, avci->buffer_count); 493 494 return 0; 495} 496 497int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame) 498{ 499 switch (avctx->codec_type) { 500 case AVMEDIA_TYPE_VIDEO: 501 return video_get_buffer(avctx, frame); 502 case AVMEDIA_TYPE_AUDIO: 503 return audio_get_buffer(avctx, frame); 504 default: 505 return -1; 506 } 507} 508 509void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){ 510 int i; 511 InternalBuffer *buf, *last; 512 AVCodecInternal *avci = s->internal; 513 514 assert(s->codec_type == AVMEDIA_TYPE_VIDEO); 515 516 assert(pic->type==FF_BUFFER_TYPE_INTERNAL); 517 assert(avci->buffer_count); 518 519 if (avci->buffer) { 520 buf = NULL; /* avoids warning */ 521 for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize 522 buf = &avci->buffer[i]; 523 if (buf->data[0] == pic->data[0]) 524 break; 525 } 526 assert(i < avci->buffer_count); 527 avci->buffer_count--; 528 last = &avci->buffer[avci->buffer_count]; 529 530 if (buf != last) 531 FFSWAP(InternalBuffer, *buf, *last); 532 } 533 534 for (i = 0; i < AV_NUM_DATA_POINTERS; i++) { 535 pic->data[i]=NULL; 536// pic->base[i]=NULL; 537 } 538//printf("R%X\n", pic->opaque); 539 540 if(s->debug&FF_DEBUG_BUFFERS) 541 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d " 542 "buffers used\n", pic, avci->buffer_count); 543} 544 545int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){ 546 AVFrame temp_pic; 547 int i; 548 549 assert(s->codec_type == AVMEDIA_TYPE_VIDEO); 550 551 /* If no picture return a new buffer */ 552 if(pic->data[0] == NULL) { 553 /* We will copy from buffer, so must be readable */ 554 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE; 555 return s->get_buffer(s, pic); 556 } 557 558 /* If internal buffer type return the same buffer */ 559 if(pic->type == FF_BUFFER_TYPE_INTERNAL) { 560 if(s->pkt) pic->pkt_pts= s->pkt->pts; 561 else pic->pkt_pts= AV_NOPTS_VALUE; 562 pic->reordered_opaque= s->reordered_opaque; 563 return 0; 564 } 565 566 /* 567 * Not internal type and reget_buffer not overridden, emulate cr buffer 568 */ 569 temp_pic = *pic; 570 for(i = 0; i < AV_NUM_DATA_POINTERS; i++) 571 pic->data[i] = pic->base[i] = NULL; 572 pic->opaque = NULL; 573 /* Allocate new frame */ 574 if (s->get_buffer(s, pic)) 575 return -1; 576 /* Copy image data from old buffer to new buffer */ 577 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width, 578 s->height); 579 s->release_buffer(s, &temp_pic); // Release old frame 580 return 0; 581} 582 583int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){ 584 int i; 585 586 for(i=0; i<count; i++){ 587 int r= func(c, (char*)arg + i*size); 588 if(ret) ret[i]= r; 589 } 590 return 0; 591} 592 593int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){ 594 int i; 595 596 for(i=0; i<count; i++){ 597 int r= func(c, arg, i, 0); 598 if(ret) ret[i]= r; 599 } 600 return 0; 601} 602 603enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){ 604 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt)) 605 ++fmt; 606 return fmt[0]; 607} 608 609void avcodec_get_frame_defaults(AVFrame *pic){ 610 memset(pic, 0, sizeof(AVFrame)); 611 612 pic->pts= AV_NOPTS_VALUE; 613 pic->key_frame= 1; 614 pic->sample_aspect_ratio = (AVRational){0, 1}; 615 pic->format = -1; /* unknown */ 616} 617 618AVFrame *avcodec_alloc_frame(void){ 619 AVFrame *pic= av_malloc(sizeof(AVFrame)); 620 621 if(pic==NULL) return NULL; 622 623 avcodec_get_frame_defaults(pic); 624 625 return pic; 626} 627 628#if FF_API_AVCODEC_OPEN 629int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec) 630{ 631 return avcodec_open2(avctx, codec, NULL); 632} 633#endif 634 635int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options) 636{ 637 int ret = 0; 638 AVDictionary *tmp = NULL; 639 640 if (avcodec_is_open(avctx)) 641 return 0; 642 643 if ((!codec && !avctx->codec)) { 644 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n"); 645 return AVERROR(EINVAL); 646 } 647 if ((codec && avctx->codec && codec != avctx->codec)) { 648 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, " 649 "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name); 650 return AVERROR(EINVAL); 651 } 652 if (!codec) 653 codec = avctx->codec; 654 655 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE) 656 return AVERROR(EINVAL); 657 658 if (options) 659 av_dict_copy(&tmp, *options, 0); 660 661 /* If there is a user-supplied mutex locking routine, call it. */ 662 if (ff_lockmgr_cb) { 663 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) 664 return -1; 665 } 666 667 entangled_thread_counter++; 668 if(entangled_thread_counter != 1){ 669 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n"); 670 ret = -1; 671 goto end; 672 } 673 674 avctx->internal = av_mallocz(sizeof(AVCodecInternal)); 675 if (!avctx->internal) { 676 ret = AVERROR(ENOMEM); 677 goto end; 678 } 679 680 if (codec->priv_data_size > 0) { 681 if(!avctx->priv_data){ 682 avctx->priv_data = av_mallocz(codec->priv_data_size); 683 if (!avctx->priv_data) { 684 ret = AVERROR(ENOMEM); 685 goto end; 686 } 687 if (codec->priv_class) { 688 *(AVClass**)avctx->priv_data= codec->priv_class; 689 av_opt_set_defaults(avctx->priv_data); 690 } 691 } 692 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0) 693 goto free_and_end; 694 } else { 695 avctx->priv_data = NULL; 696 } 697 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0) 698 goto free_and_end; 699 700 if(avctx->coded_width && avctx->coded_height) 701 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height); 702 else if(avctx->width && avctx->height) 703 avcodec_set_dimensions(avctx, avctx->width, avctx->height); 704 705 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height) 706 && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0 707 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) { 708 av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n"); 709 avcodec_set_dimensions(avctx, 0, 0); 710 } 711 712 /* if the decoder init function was already called previously, 713 free the already allocated subtitle_header before overwriting it */ 714 if (codec_is_decoder(codec)) 715 av_freep(&avctx->subtitle_header); 716 717#define SANE_NB_CHANNELS 128U 718 if (avctx->channels > SANE_NB_CHANNELS) { 719 ret = AVERROR(EINVAL); 720 goto free_and_end; 721 } 722 723 avctx->codec = codec; 724 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) && 725 avctx->codec_id == CODEC_ID_NONE) { 726 avctx->codec_type = codec->type; 727 avctx->codec_id = codec->id; 728 } 729 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type 730 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) { 731 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n"); 732 ret = AVERROR(EINVAL); 733 goto free_and_end; 734 } 735 avctx->frame_number = 0; 736#if FF_API_ER 737 738 av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition separate: %d; %d\n", 739 avctx->error_recognition, avctx->err_recognition); 740 /* FF_ER_CAREFUL (==1) implies AV_EF_CRCCHECK (== 1<<1 - 1), 741 FF_ER_COMPLIANT (==2) implies AV_EF_{CRCCHECK,BITSTREAM} (== 1<<2 - 1), et cetera} */ 742 avctx->err_recognition |= (1<<(avctx->error_recognition-(avctx->error_recognition>=FF_ER_VERY_AGGRESSIVE))) - 1; 743 av_log(avctx, AV_LOG_DEBUG, "err{or,}_recognition combined: %d; %d\n", 744 avctx->error_recognition, avctx->err_recognition); 745#endif 746 747 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && 748 (!avctx->time_base.num || !avctx->time_base.den)) { 749 avctx->time_base.num = 1; 750 avctx->time_base.den = avctx->sample_rate; 751 } 752 753 if (HAVE_THREADS && !avctx->thread_opaque) { 754 ret = ff_thread_init(avctx); 755 if (ret < 0) { 756 goto free_and_end; 757 } 758 } 759 if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS)) 760 avctx->thread_count = 1; 761 762 if (avctx->codec->max_lowres < avctx->lowres) { 763 av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n", 764 avctx->codec->max_lowres); 765 ret = AVERROR(EINVAL); 766 goto free_and_end; 767 } 768 if (codec_is_encoder(avctx->codec)) { 769 int i; 770 if (avctx->codec->sample_fmts) { 771 for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) 772 if (avctx->sample_fmt == avctx->codec->sample_fmts[i]) 773 break; 774 if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) { 775 av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n"); 776 ret = AVERROR(EINVAL); 777 goto free_and_end; 778 } 779 } 780 if (avctx->codec->supported_samplerates) { 781 for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++) 782 if (avctx->sample_rate == avctx->codec->supported_samplerates[i]) 783 break; 784 if (avctx->codec->supported_samplerates[i] == 0) { 785 av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n"); 786 ret = AVERROR(EINVAL); 787 goto free_and_end; 788 } 789 } 790 if (avctx->codec->channel_layouts) { 791 if (!avctx->channel_layout) { 792 av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n"); 793 } else { 794 for (i = 0; avctx->codec->channel_layouts[i] != 0; i++) 795 if (avctx->channel_layout == avctx->codec->channel_layouts[i]) 796 break; 797 if (avctx->codec->channel_layouts[i] == 0) { 798 av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n"); 799 ret = AVERROR(EINVAL); 800 goto free_and_end; 801 } 802 } 803 } 804 if (avctx->channel_layout && avctx->channels) { 805 if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) { 806 av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n"); 807 ret = AVERROR(EINVAL); 808 goto free_and_end; 809 } 810 } else if (avctx->channel_layout) { 811 avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout); 812 } 813 } 814 815 if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){ 816 ret = avctx->codec->init(avctx); 817 if (ret < 0) { 818 goto free_and_end; 819 } 820 } 821end: 822 entangled_thread_counter--; 823 824 /* Release any user-supplied mutex. */ 825 if (ff_lockmgr_cb) { 826 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); 827 } 828 if (options) { 829 av_dict_free(options); 830 *options = tmp; 831 } 832 833 return ret; 834free_and_end: 835 av_dict_free(&tmp); 836 av_freep(&avctx->priv_data); 837 av_freep(&avctx->internal); 838 avctx->codec= NULL; 839 goto end; 840} 841 842int ff_alloc_packet(AVPacket *avpkt, int size) 843{ 844 if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) 845 return AVERROR(EINVAL); 846 847 if (avpkt->data) { 848 uint8_t *pkt_data; 849 int pkt_size; 850 851 if (avpkt->size < size) 852 return AVERROR(EINVAL); 853 854 pkt_data = avpkt->data; 855 pkt_size = avpkt->size; 856 av_init_packet(avpkt); 857 avpkt->data = pkt_data; 858 avpkt->size = pkt_size; 859 return 0; 860 } else { 861 return av_new_packet(avpkt, size); 862 } 863} 864 865int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx, 866 AVPacket *avpkt, 867 const AVFrame *frame, 868 int *got_packet_ptr) 869{ 870 int ret; 871 int user_packet = !!avpkt->data; 872 int nb_samples; 873 874 if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) { 875 av_init_packet(avpkt); 876 avpkt->size = 0; 877 return 0; 878 } 879 880 /* check for valid frame size */ 881 if (frame) { 882 nb_samples = frame->nb_samples; 883 if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) { 884 if (nb_samples > avctx->frame_size) 885 return AVERROR(EINVAL); 886 } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) { 887 if (nb_samples != avctx->frame_size) 888 return AVERROR(EINVAL); 889 } 890 } else { 891 nb_samples = avctx->frame_size; 892 } 893 894 if (avctx->codec->encode2) { 895 *got_packet_ptr = 0; 896 ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr); 897 if (!ret && *got_packet_ptr && 898 !(avctx->codec->capabilities & CODEC_CAP_DELAY)) { 899 avpkt->pts = frame->pts; 900 avpkt->duration = av_rescale_q(frame->nb_samples, 901 (AVRational){ 1, avctx->sample_rate }, 902 avctx->time_base); 903 } 904 } else { 905 /* for compatibility with encoders not supporting encode2(), we need to 906 allocate a packet buffer if the user has not provided one or check 907 the size otherwise */ 908 int fs_tmp = 0; 909 int buf_size = avpkt->size; 910 if (!user_packet) { 911 if (avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) { 912 av_assert0(av_get_bits_per_sample(avctx->codec_id) != 0); 913 buf_size = nb_samples * avctx->channels * 914 av_get_bits_per_sample(avctx->codec_id) / 8; 915 } else { 916 /* this is a guess as to the required size. 917 if an encoder needs more than this, it should probably 918 implement encode2() */ 919 buf_size = 2 * avctx->frame_size * avctx->channels * 920 av_get_bytes_per_sample(avctx->sample_fmt); 921 buf_size += FF_MIN_BUFFER_SIZE; 922 } 923 } 924 if ((ret = ff_alloc_packet(avpkt, buf_size))) 925 return ret; 926 927 /* Encoders using AVCodec.encode() that support 928 CODEC_CAP_SMALL_LAST_FRAME require avctx->frame_size to be set to 929 the smaller size when encoding the last frame. 930 This code can be removed once all encoders supporting 931 CODEC_CAP_SMALL_LAST_FRAME use encode2() */ 932 if ((avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) && 933 nb_samples < avctx->frame_size) { 934 fs_tmp = avctx->frame_size; 935 avctx->frame_size = nb_samples; 936 } 937 938 /* encode the frame */ 939 ret = avctx->codec->encode(avctx, avpkt->data, avpkt->size, 940 frame ? frame->data[0] : NULL); 941 if (ret >= 0) { 942 if (!ret) { 943 /* no output. if the packet data was allocated by libavcodec, 944 free it */ 945 if (!user_packet) 946 av_freep(&avpkt->data); 947 } else { 948 if (avctx->coded_frame) 949 avpkt->pts = avctx->coded_frame->pts; 950 /* Set duration for final small packet. This can be removed 951 once all encoders supporting CODEC_CAP_SMALL_LAST_FRAME use 952 encode2() */ 953 if (fs_tmp) { 954 avpkt->duration = av_rescale_q(avctx->frame_size, 955 (AVRational){ 1, avctx->sample_rate }, 956 avctx->time_base); 957 } 958 } 959 avpkt->size = ret; 960 *got_packet_ptr = (ret > 0); 961 ret = 0; 962 } 963 964 if (fs_tmp) 965 avctx->frame_size = fs_tmp; 966 } 967 if (!ret) 968 avctx->frame_number++; 969 970 /* NOTE: if we add any audio encoders which output non-keyframe packets, 971 this needs to be moved to the encoders, but for now we can do it 972 here to simplify things */ 973 avpkt->flags |= AV_PKT_FLAG_KEY; 974 975 return ret; 976} 977 978#if FF_API_OLD_DECODE_AUDIO 979int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, 980 uint8_t *buf, int buf_size, 981 const short *samples) 982{ 983 AVPacket pkt; 984 AVFrame frame0; 985 AVFrame *frame; 986 int ret, samples_size, got_packet; 987 988 av_init_packet(&pkt); 989 pkt.data = buf; 990 pkt.size = buf_size; 991 992 if (samples) { 993 frame = &frame0; 994 avcodec_get_frame_defaults(frame); 995 996 if (avctx->frame_size) { 997 frame->nb_samples = avctx->frame_size; 998 } else { 999 /* if frame_size is not set, the number of samples must be 1000 calculated from the buffer size */ 1001 int64_t nb_samples; 1002 if (!av_get_bits_per_sample(avctx->codec_id)) { 1003 av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not " 1004 "support this codec\n"); 1005 return AVERROR(EINVAL); 1006 } 1007 nb_samples = (int64_t)buf_size * 8 / 1008 (av_get_bits_per_sample(avctx->codec_id) * 1009 avctx->channels); 1010 if (nb_samples >= INT_MAX) 1011 return AVERROR(EINVAL); 1012 frame->nb_samples = nb_samples; 1013 } 1014 1015 /* it is assumed that the samples buffer is large enough based on the 1016 relevant parameters */ 1017 samples_size = av_samples_get_buffer_size(NULL, avctx->channels, 1018 frame->nb_samples, 1019 avctx->sample_fmt, 1); 1020 if ((ret = avcodec_fill_audio_frame(frame, avctx->channels, 1021 avctx->sample_fmt, 1022 samples, samples_size, 1))) 1023 return ret; 1024 1025 /* fabricate frame pts from sample count. 1026 this is needed because the avcodec_encode_audio() API does not have 1027 a way for the user to provide pts */ 1028 frame->pts = av_rescale_q(avctx->internal->sample_count, 1029 (AVRational){ 1, avctx->sample_rate }, 1030 avctx->time_base); 1031 avctx->internal->sample_count += frame->nb_samples; 1032 } else { 1033 frame = NULL; 1034 } 1035 1036 got_packet = 0; 1037 ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet); 1038 if (!ret && got_packet && avctx->coded_frame) { 1039 avctx->coded_frame->pts = pkt.pts; 1040 avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY); 1041 } 1042 /* free any side data since we cannot return it */ 1043 if (pkt.side_data_elems > 0) { 1044 int i; 1045 for (i = 0; i < pkt.side_data_elems; i++) 1046 av_free(pkt.side_data[i].data); 1047 av_freep(&pkt.side_data); 1048 pkt.side_data_elems = 0; 1049 } 1050 1051 if (frame && frame->extended_data != frame->data) 1052 av_free(frame->extended_data); 1053 1054 return ret ? ret : pkt.size; 1055} 1056#endif 1057 1058int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 1059 const AVFrame *pict) 1060{ 1061 if(buf_size < FF_MIN_BUFFER_SIZE){ 1062 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n"); 1063 return -1; 1064 } 1065 if(av_image_check_size(avctx->width, avctx->height, 0, avctx)) 1066 return -1; 1067 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){ 1068 int ret = avctx->codec->encode(avctx, buf, buf_size, pict); 1069 avctx->frame_number++; 1070 emms_c(); //needed to avoid an emms_c() call before every return; 1071 1072 return ret; 1073 }else 1074 return 0; 1075} 1076 1077int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, 1078 const AVSubtitle *sub) 1079{ 1080 int ret; 1081 if(sub->start_display_time) { 1082 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n"); 1083 return -1; 1084 } 1085 if(sub->num_rects == 0 || !sub->rects) 1086 return -1; 1087 ret = avctx->codec->encode(avctx, buf, buf_size, sub); 1088 avctx->frame_number++; 1089 return ret; 1090} 1091 1092static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt) 1093{ 1094 int size = 0; 1095 const uint8_t *data; 1096 uint32_t flags; 1097 1098 if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) 1099 return; 1100 1101 data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size); 1102 if (!data || size < 4) 1103 return; 1104 flags = bytestream_get_le32(&data); 1105 size -= 4; 1106 if (size < 4) /* Required for any of the changes */ 1107 return; 1108 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) { 1109 avctx->channels = bytestream_get_le32(&data); 1110 size -= 4; 1111 } 1112 if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) { 1113 if (size < 8) 1114 return; 1115 avctx->channel_layout = bytestream_get_le64(&data); 1116 size -= 8; 1117 } 1118 if (size < 4) 1119 return; 1120 if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) { 1121 avctx->sample_rate = bytestream_get_le32(&data); 1122 size -= 4; 1123 } 1124 if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) { 1125 if (size < 8) 1126 return; 1127 avctx->width = bytestream_get_le32(&data); 1128 avctx->height = bytestream_get_le32(&data); 1129 avcodec_set_dimensions(avctx, avctx->width, avctx->height); 1130 size -= 8; 1131 } 1132} 1133 1134int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, 1135 int *got_picture_ptr, 1136 AVPacket *avpkt) 1137{ 1138 int ret; 1139 1140 *got_picture_ptr= 0; 1141 if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx)) 1142 return -1; 1143 1144 avctx->pkt = avpkt; 1145 apply_param_change(avctx, avpkt); 1146 1147 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){ 1148 if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME) 1149 ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr, 1150 avpkt); 1151 else { 1152 ret = avctx->codec->decode(avctx, picture, got_picture_ptr, 1153 avpkt); 1154 picture->pkt_dts= avpkt->dts; 1155 picture->sample_aspect_ratio = avctx->sample_aspect_ratio; 1156 picture->width = avctx->width; 1157 picture->height = avctx->height; 1158 picture->format = avctx->pix_fmt; 1159 } 1160 1161 emms_c(); //needed to avoid an emms_c() call before every return; 1162 1163 if (*got_picture_ptr) 1164 avctx->frame_number++; 1165 }else 1166 ret= 0; 1167 1168 return ret; 1169} 1170 1171#if FF_API_OLD_DECODE_AUDIO 1172int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples, 1173 int *frame_size_ptr, 1174 AVPacket *avpkt) 1175{ 1176 AVFrame frame; 1177 int ret, got_frame = 0; 1178 1179 if (avctx->get_buffer != avcodec_default_get_buffer) { 1180 av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with" 1181 "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n"); 1182 av_log(avctx, AV_LOG_ERROR, "Please port your application to " 1183 "avcodec_decode_audio4()\n"); 1184 avctx->get_buffer = avcodec_default_get_buffer; 1185 } 1186 1187 ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt); 1188 1189 if (ret >= 0 && got_frame) { 1190 int ch, plane_size; 1191 int planar = av_sample_fmt_is_planar(avctx->sample_fmt); 1192 int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels, 1193 frame.nb_samples, 1194 avctx->sample_fmt, 1); 1195 if (*frame_size_ptr < data_size) { 1196 av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for " 1197 "the current frame (%d < %d)\n", *frame_size_ptr, data_size); 1198 return AVERROR(EINVAL); 1199 } 1200 1201 memcpy(samples, frame.extended_data[0], plane_size); 1202 1203 if (planar && avctx->channels > 1) { 1204 uint8_t *out = ((uint8_t *)samples) + plane_size; 1205 for (ch = 1; ch < avctx->channels; ch++) { 1206 memcpy(out, frame.extended_data[ch], plane_size); 1207 out += plane_size; 1208 } 1209 } 1210 *frame_size_ptr = data_size; 1211 } else { 1212 *frame_size_ptr = 0; 1213 } 1214 return ret; 1215} 1216#endif 1217 1218int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, 1219 AVFrame *frame, 1220 int *got_frame_ptr, 1221 AVPacket *avpkt) 1222{ 1223 int ret = 0; 1224 1225 *got_frame_ptr = 0; 1226 1227 avctx->pkt = avpkt; 1228 1229 if (!avpkt->data && avpkt->size) { 1230 av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n"); 1231 return AVERROR(EINVAL); 1232 } 1233 1234 apply_param_change(avctx, avpkt); 1235 1236 if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) { 1237 ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt); 1238 if (ret >= 0 && *got_frame_ptr) { 1239 avctx->frame_number++; 1240 frame->pkt_dts = avpkt->dts; 1241 if (frame->format == AV_SAMPLE_FMT_NONE) 1242 frame->format = avctx->sample_fmt; 1243 } 1244 } 1245 return ret; 1246} 1247 1248int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, 1249 int *got_sub_ptr, 1250 AVPacket *avpkt) 1251{ 1252 int ret; 1253 1254 avctx->pkt = avpkt; 1255 *got_sub_ptr = 0; 1256 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt); 1257 if (*got_sub_ptr) 1258 avctx->frame_number++; 1259 return ret; 1260} 1261 1262void avsubtitle_free(AVSubtitle *sub) 1263{ 1264 int i; 1265 1266 for (i = 0; i < sub->num_rects; i++) 1267 { 1268 av_freep(&sub->rects[i]->pict.data[0]); 1269 av_freep(&sub->rects[i]->pict.data[1]); 1270 av_freep(&sub->rects[i]->pict.data[2]); 1271 av_freep(&sub->rects[i]->pict.data[3]); 1272 av_freep(&sub->rects[i]->text); 1273 av_freep(&sub->rects[i]->ass); 1274 av_freep(&sub->rects[i]); 1275 } 1276 1277 av_freep(&sub->rects); 1278 1279 memset(sub, 0, sizeof(AVSubtitle)); 1280} 1281 1282av_cold int avcodec_close(AVCodecContext *avctx) 1283{ 1284 /* If there is a user-supplied mutex locking routine, call it. */ 1285 if (ff_lockmgr_cb) { 1286 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) 1287 return -1; 1288 } 1289 1290 entangled_thread_counter++; 1291 if(entangled_thread_counter != 1){ 1292 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n"); 1293 entangled_thread_counter--; 1294 return -1; 1295 } 1296 1297 if (avcodec_is_open(avctx)) { 1298 if (HAVE_THREADS && avctx->thread_opaque) 1299 ff_thread_free(avctx); 1300 if (avctx->codec && avctx->codec->close) 1301 avctx->codec->close(avctx); 1302 avcodec_default_free_buffers(avctx); 1303 avctx->coded_frame = NULL; 1304 av_freep(&avctx->internal); 1305 } 1306 1307 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class) 1308 av_opt_free(avctx->priv_data); 1309 av_opt_free(avctx); 1310 av_freep(&avctx->priv_data); 1311 if (codec_is_encoder(avctx->codec)) 1312 av_freep(&avctx->extradata); 1313 avctx->codec = NULL; 1314 avctx->active_thread_type = 0; 1315 entangled_thread_counter--; 1316 1317 /* Release any user-supplied mutex. */ 1318 if (ff_lockmgr_cb) { 1319 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); 1320 } 1321 return 0; 1322} 1323 1324AVCodec *avcodec_find_encoder(enum CodecID id) 1325{ 1326 AVCodec *p, *experimental=NULL; 1327 p = first_avcodec; 1328 while (p) { 1329 if (codec_is_encoder(p) && p->id == id) { 1330 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) { 1331 experimental = p; 1332 } else 1333 return p; 1334 } 1335 p = p->next; 1336 } 1337 return experimental; 1338} 1339 1340AVCodec *avcodec_find_encoder_by_name(const char *name) 1341{ 1342 AVCodec *p; 1343 if (!name) 1344 return NULL; 1345 p = first_avcodec; 1346 while (p) { 1347 if (codec_is_encoder(p) && strcmp(name,p->name) == 0) 1348 return p; 1349 p = p->next; 1350 } 1351 return NULL; 1352} 1353 1354AVCodec *avcodec_find_decoder(enum CodecID id) 1355{ 1356 AVCodec *p; 1357 p = first_avcodec; 1358 while (p) { 1359 if (codec_is_decoder(p) && p->id == id) 1360 return p; 1361 p = p->next; 1362 } 1363 return NULL; 1364} 1365 1366AVCodec *avcodec_find_decoder_by_name(const char *name) 1367{ 1368 AVCodec *p; 1369 if (!name) 1370 return NULL; 1371 p = first_avcodec; 1372 while (p) { 1373 if (codec_is_decoder(p) && strcmp(name,p->name) == 0) 1374 return p; 1375 p = p->next; 1376 } 1377 return NULL; 1378} 1379 1380static int get_bit_rate(AVCodecContext *ctx) 1381{ 1382 int bit_rate; 1383 int bits_per_sample; 1384 1385 switch(ctx->codec_type) { 1386 case AVMEDIA_TYPE_VIDEO: 1387 case AVMEDIA_TYPE_DATA: 1388 case AVMEDIA_TYPE_SUBTITLE: 1389 case AVMEDIA_TYPE_ATTACHMENT: 1390 bit_rate = ctx->bit_rate; 1391 break; 1392 case AVMEDIA_TYPE_AUDIO: 1393 bits_per_sample = av_get_bits_per_sample(ctx->codec_id); 1394 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate; 1395 break; 1396 default: 1397 bit_rate = 0; 1398 break; 1399 } 1400 return bit_rate; 1401} 1402 1403size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag) 1404{ 1405 int i, len, ret = 0; 1406 1407 for (i = 0; i < 4; i++) { 1408 len = snprintf(buf, buf_size, 1409 isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF); 1410 buf += len; 1411 buf_size = buf_size > len ? buf_size - len : 0; 1412 ret += len; 1413 codec_tag>>=8; 1414 } 1415 return ret; 1416} 1417 1418void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode) 1419{ 1420 const char *codec_name; 1421 const char *profile = NULL; 1422 AVCodec *p; 1423 char buf1[32]; 1424 int bitrate; 1425 AVRational display_aspect_ratio; 1426 1427 if (encode) 1428 p = avcodec_find_encoder(enc->codec_id); 1429 else 1430 p = avcodec_find_decoder(enc->codec_id); 1431 1432 if (p) { 1433 codec_name = p->name; 1434 profile = av_get_profile_name(p, enc->profile); 1435 } else if (enc->codec_id == CODEC_ID_MPEG2TS) { 1436 /* fake mpeg2 transport stream codec (currently not 1437 registered) */ 1438 codec_name = "mpeg2ts"; 1439 } else if (enc->codec_name[0] != '\0') { 1440 codec_name = enc->codec_name; 1441 } else { 1442 /* output avi tags */ 1443 char tag_buf[32]; 1444 av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag); 1445 snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag); 1446 codec_name = buf1; 1447 } 1448 1449 switch(enc->codec_type) { 1450 case AVMEDIA_TYPE_VIDEO: 1451 snprintf(buf, buf_size, 1452 "Video: %s%s", 1453 codec_name, enc->mb_decision ? " (hq)" : ""); 1454 if (profile) 1455 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1456 " (%s)", profile); 1457 if (enc->pix_fmt != PIX_FMT_NONE) { 1458 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1459 ", %s", 1460 av_get_pix_fmt_name(enc->pix_fmt)); 1461 } 1462 if (enc->width) { 1463 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1464 ", %dx%d", 1465 enc->width, enc->height); 1466 if (enc->sample_aspect_ratio.num) { 1467 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den, 1468 enc->width*enc->sample_aspect_ratio.num, 1469 enc->height*enc->sample_aspect_ratio.den, 1470 1024*1024); 1471 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1472 " [PAR %d:%d DAR %d:%d]", 1473 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den, 1474 display_aspect_ratio.num, display_aspect_ratio.den); 1475 } 1476 if(av_log_get_level() >= AV_LOG_DEBUG){ 1477 int g= av_gcd(enc->time_base.num, enc->time_base.den); 1478 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1479 ", %d/%d", 1480 enc->time_base.num/g, enc->time_base.den/g); 1481 } 1482 } 1483 if (encode) { 1484 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1485 ", q=%d-%d", enc->qmin, enc->qmax); 1486 } 1487 break; 1488 case AVMEDIA_TYPE_AUDIO: 1489 snprintf(buf, buf_size, 1490 "Audio: %s", 1491 codec_name); 1492 if (profile) 1493 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1494 " (%s)", profile); 1495 if (enc->sample_rate) { 1496 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1497 ", %d Hz", enc->sample_rate); 1498 } 1499 av_strlcat(buf, ", ", buf_size); 1500 av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout); 1501 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) { 1502 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1503 ", %s", av_get_sample_fmt_name(enc->sample_fmt)); 1504 } 1505 break; 1506 case AVMEDIA_TYPE_DATA: 1507 snprintf(buf, buf_size, "Data: %s", codec_name); 1508 break; 1509 case AVMEDIA_TYPE_SUBTITLE: 1510 snprintf(buf, buf_size, "Subtitle: %s", codec_name); 1511 break; 1512 case AVMEDIA_TYPE_ATTACHMENT: 1513 snprintf(buf, buf_size, "Attachment: %s", codec_name); 1514 break; 1515 default: 1516 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type); 1517 return; 1518 } 1519 if (encode) { 1520 if (enc->flags & CODEC_FLAG_PASS1) 1521 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1522 ", pass 1"); 1523 if (enc->flags & CODEC_FLAG_PASS2) 1524 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1525 ", pass 2"); 1526 } 1527 bitrate = get_bit_rate(enc); 1528 if (bitrate != 0) { 1529 snprintf(buf + strlen(buf), buf_size - strlen(buf), 1530 ", %d kb/s", bitrate / 1000); 1531 } 1532} 1533 1534const char *av_get_profile_name(const AVCodec *codec, int profile) 1535{ 1536 const AVProfile *p; 1537 if (profile == FF_PROFILE_UNKNOWN || !codec->profiles) 1538 return NULL; 1539 1540 for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++) 1541 if (p->profile == profile) 1542 return p->name; 1543 1544 return NULL; 1545} 1546 1547unsigned avcodec_version( void ) 1548{ 1549 return LIBAVCODEC_VERSION_INT; 1550} 1551 1552const char *avcodec_configuration(void) 1553{ 1554 return LIBAV_CONFIGURATION; 1555} 1556 1557const char *avcodec_license(void) 1558{ 1559#define LICENSE_PREFIX "libavcodec license: " 1560 return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1; 1561} 1562 1563void avcodec_flush_buffers(AVCodecContext *avctx) 1564{ 1565 if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME) 1566 ff_thread_flush(avctx); 1567 else if(avctx->codec->flush) 1568 avctx->codec->flush(avctx); 1569} 1570 1571static void video_free_buffers(AVCodecContext *s) 1572{ 1573 AVCodecInternal *avci = s->internal; 1574 int i, j; 1575 1576 if (!avci->buffer) 1577 return; 1578 1579 if (avci->buffer_count) 1580 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", 1581 avci->buffer_count); 1582 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){ 1583 InternalBuffer *buf = &avci->buffer[i]; 1584 for(j=0; j<4; j++){ 1585 av_freep(&buf->base[j]); 1586 buf->data[j]= NULL; 1587 } 1588 } 1589 av_freep(&avci->buffer); 1590 1591 avci->buffer_count=0; 1592} 1593 1594static void audio_free_buffers(AVCodecContext *avctx) 1595{ 1596 AVCodecInternal *avci = avctx->internal; 1597 InternalBuffer *buf; 1598 1599 if (!avci->buffer) 1600 return; 1601 buf = avci->buffer; 1602 1603 if (buf->extended_data) { 1604 av_free(buf->extended_data[0]); 1605 if (buf->extended_data != buf->data) 1606 av_free(buf->extended_data); 1607 } 1608 av_freep(&avci->buffer); 1609} 1610 1611void avcodec_default_free_buffers(AVCodecContext *avctx) 1612{ 1613 switch (avctx->codec_type) { 1614 case AVMEDIA_TYPE_VIDEO: 1615 video_free_buffers(avctx); 1616 break; 1617 case AVMEDIA_TYPE_AUDIO: 1618 audio_free_buffers(avctx); 1619 break; 1620 default: 1621 break; 1622 } 1623} 1624 1625#if FF_API_OLD_FF_PICT_TYPES 1626char av_get_pict_type_char(int pict_type){ 1627 return av_get_picture_type_char(pict_type); 1628} 1629#endif 1630 1631int av_get_bits_per_sample(enum CodecID codec_id){ 1632 switch(codec_id){ 1633 case CODEC_ID_ADPCM_SBPRO_2: 1634 return 2; 1635 case CODEC_ID_ADPCM_SBPRO_3: 1636 return 3; 1637 case CODEC_ID_ADPCM_SBPRO_4: 1638 case CODEC_ID_ADPCM_CT: 1639 case CODEC_ID_ADPCM_IMA_WAV: 1640 case CODEC_ID_ADPCM_IMA_QT: 1641 case CODEC_ID_ADPCM_SWF: 1642 case CODEC_ID_ADPCM_MS: 1643 case CODEC_ID_ADPCM_YAMAHA: 1644 case CODEC_ID_ADPCM_G722: 1645 return 4; 1646 case CODEC_ID_PCM_ALAW: 1647 case CODEC_ID_PCM_MULAW: 1648 case CODEC_ID_PCM_S8: 1649 case CODEC_ID_PCM_U8: 1650 case CODEC_ID_PCM_ZORK: 1651 return 8; 1652 case CODEC_ID_PCM_S16BE: 1653 case CODEC_ID_PCM_S16LE: 1654 case CODEC_ID_PCM_S16LE_PLANAR: 1655 case CODEC_ID_PCM_U16BE: 1656 case CODEC_ID_PCM_U16LE: 1657 return 16; 1658 case CODEC_ID_PCM_S24DAUD: 1659 case CODEC_ID_PCM_S24BE: 1660 case CODEC_ID_PCM_S24LE: 1661 case CODEC_ID_PCM_U24BE: 1662 case CODEC_ID_PCM_U24LE: 1663 return 24; 1664 case CODEC_ID_PCM_S32BE: 1665 case CODEC_ID_PCM_S32LE: 1666 case CODEC_ID_PCM_U32BE: 1667 case CODEC_ID_PCM_U32LE: 1668 case CODEC_ID_PCM_F32BE: 1669 case CODEC_ID_PCM_F32LE: 1670 return 32; 1671 case CODEC_ID_PCM_F64BE: 1672 case CODEC_ID_PCM_F64LE: 1673 return 64; 1674 default: 1675 return 0; 1676 } 1677} 1678 1679#if FF_API_OLD_SAMPLE_FMT 1680int av_get_bits_per_sample_format(enum AVSampleFormat sample_fmt) { 1681 return av_get_bytes_per_sample(sample_fmt) << 3; 1682} 1683#endif 1684 1685#if !HAVE_THREADS 1686int ff_thread_init(AVCodecContext *s){ 1687 return -1; 1688} 1689#endif 1690 1691unsigned int av_xiphlacing(unsigned char *s, unsigned int v) 1692{ 1693 unsigned int n = 0; 1694 1695 while(v >= 0xff) { 1696 *s++ = 0xff; 1697 v -= 0xff; 1698 n++; 1699 } 1700 *s = v; 1701 n++; 1702 return n; 1703} 1704 1705int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){ 1706 int i; 1707 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++); 1708 return i; 1709} 1710 1711void av_log_missing_feature(void *avc, const char *feature, int want_sample) 1712{ 1713 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your Libav " 1714 "version to the newest one from Git. If the problem still " 1715 "occurs, it means that your file has a feature which has not " 1716 "been implemented.\n", feature); 1717 if(want_sample) 1718 av_log_ask_for_sample(avc, NULL); 1719} 1720 1721void av_log_ask_for_sample(void *avc, const char *msg, ...) 1722{ 1723 va_list argument_list; 1724 1725 va_start(argument_list, msg); 1726 1727 if (msg) 1728 av_vlog(avc, AV_LOG_WARNING, msg, argument_list); 1729 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample " 1730 "of this file to ftp://upload.libav.org/incoming/ " 1731 "and contact the libav-devel mailing list.\n"); 1732 1733 va_end(argument_list); 1734} 1735 1736static AVHWAccel *first_hwaccel = NULL; 1737 1738void av_register_hwaccel(AVHWAccel *hwaccel) 1739{ 1740 AVHWAccel **p = &first_hwaccel; 1741 while (*p) 1742 p = &(*p)->next; 1743 *p = hwaccel; 1744 hwaccel->next = NULL; 1745} 1746 1747AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel) 1748{ 1749 return hwaccel ? hwaccel->next : first_hwaccel; 1750} 1751 1752AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt) 1753{ 1754 AVHWAccel *hwaccel=NULL; 1755 1756 while((hwaccel= av_hwaccel_next(hwaccel))){ 1757 if ( hwaccel->id == codec_id 1758 && hwaccel->pix_fmt == pix_fmt) 1759 return hwaccel; 1760 } 1761 return NULL; 1762} 1763 1764int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)) 1765{ 1766 if (ff_lockmgr_cb) { 1767 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY)) 1768 return -1; 1769 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY)) 1770 return -1; 1771 } 1772 1773 ff_lockmgr_cb = cb; 1774 1775 if (ff_lockmgr_cb) { 1776 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE)) 1777 return -1; 1778 if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE)) 1779 return -1; 1780 } 1781 return 0; 1782} 1783 1784int avpriv_lock_avformat(void) 1785{ 1786 if (ff_lockmgr_cb) { 1787 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN)) 1788 return -1; 1789 } 1790 return 0; 1791} 1792 1793int avpriv_unlock_avformat(void) 1794{ 1795 if (ff_lockmgr_cb) { 1796 if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE)) 1797 return -1; 1798 } 1799 return 0; 1800} 1801 1802unsigned int avpriv_toupper4(unsigned int x) 1803{ 1804 return toupper( x &0xFF) 1805 + (toupper((x>>8 )&0xFF)<<8 ) 1806 + (toupper((x>>16)&0xFF)<<16) 1807 + (toupper((x>>24)&0xFF)<<24); 1808} 1809 1810#if !HAVE_THREADS 1811 1812int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f) 1813{ 1814 f->owner = avctx; 1815 return avctx->get_buffer(avctx, f); 1816} 1817 1818void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f) 1819{ 1820 f->owner->release_buffer(f->owner, f); 1821} 1822 1823void ff_thread_finish_setup(AVCodecContext *avctx) 1824{ 1825} 1826 1827void ff_thread_report_progress(AVFrame *f, int progress, int field) 1828{ 1829} 1830 1831void ff_thread_await_progress(AVFrame *f, int progress, int field) 1832{ 1833} 1834 1835#endif 1836 1837#if FF_API_THREAD_INIT 1838int avcodec_thread_init(AVCodecContext *s, int thread_count) 1839{ 1840 s->thread_count = thread_count; 1841 return ff_thread_init(s); 1842} 1843#endif 1844 1845enum AVMediaType avcodec_get_type(enum CodecID codec_id) 1846{ 1847 if (codec_id <= CODEC_ID_NONE) 1848 return AVMEDIA_TYPE_UNKNOWN; 1849 else if (codec_id < CODEC_ID_FIRST_AUDIO) 1850 return AVMEDIA_TYPE_VIDEO; 1851 else if (codec_id < CODEC_ID_FIRST_SUBTITLE) 1852 return AVMEDIA_TYPE_AUDIO; 1853 else if (codec_id < CODEC_ID_FIRST_UNKNOWN) 1854 return AVMEDIA_TYPE_SUBTITLE; 1855 1856 return AVMEDIA_TYPE_UNKNOWN; 1857} 1858 1859int avcodec_is_open(AVCodecContext *s) 1860{ 1861 return !!s->internal; 1862} 1863