Libav
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00001 /* 00002 * utils for libavcodec 00003 * Copyright (c) 2001 Fabrice Bellard 00004 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> 00005 * 00006 * This file is part of FFmpeg. 00007 * 00008 * FFmpeg is free software; you can redistribute it and/or 00009 * modify it under the terms of the GNU Lesser General Public 00010 * License as published by the Free Software Foundation; either 00011 * version 2.1 of the License, or (at your option) any later version. 00012 * 00013 * FFmpeg is distributed in the hope that it will be useful, 00014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 * Lesser General Public License for more details. 00017 * 00018 * You should have received a copy of the GNU Lesser General Public 00019 * License along with FFmpeg; if not, write to the Free Software 00020 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00021 */ 00022 00028 /* needed for mkstemp() */ 00029 #define _XOPEN_SOURCE 600 00030 00031 #include "libavutil/avstring.h" 00032 #include "libavutil/integer.h" 00033 #include "libavutil/crc.h" 00034 #include "libavutil/pixdesc.h" 00035 #include "avcodec.h" 00036 #include "dsputil.h" 00037 #include "opt.h" 00038 #include "imgconvert.h" 00039 #include "audioconvert.h" 00040 #include "libxvid_internal.h" 00041 #include "internal.h" 00042 #include <stdlib.h> 00043 #include <stdarg.h> 00044 #include <limits.h> 00045 #include <float.h> 00046 #if !HAVE_MKSTEMP 00047 #include <fcntl.h> 00048 #endif 00049 00050 static int volatile entangled_thread_counter=0; 00051 int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op); 00052 static void *codec_mutex; 00053 00054 void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size) 00055 { 00056 if(min_size < *size) 00057 return ptr; 00058 00059 *size= FFMAX(17*min_size/16 + 32, min_size); 00060 00061 ptr= av_realloc(ptr, *size); 00062 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 00063 *size= 0; 00064 00065 return ptr; 00066 } 00067 00068 void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size) 00069 { 00070 void **p = ptr; 00071 if (min_size < *size) 00072 return; 00073 *size= FFMAX(17*min_size/16 + 32, min_size); 00074 av_free(*p); 00075 *p = av_malloc(*size); 00076 if (!*p) *size = 0; 00077 } 00078 00079 /* encoder management */ 00080 static AVCodec *first_avcodec = NULL; 00081 00082 AVCodec *av_codec_next(AVCodec *c){ 00083 if(c) return c->next; 00084 else return first_avcodec; 00085 } 00086 00087 void avcodec_register(AVCodec *codec) 00088 { 00089 AVCodec **p; 00090 avcodec_init(); 00091 p = &first_avcodec; 00092 while (*p != NULL) p = &(*p)->next; 00093 *p = codec; 00094 codec->next = NULL; 00095 } 00096 00097 #if LIBAVCODEC_VERSION_MAJOR < 53 00098 void register_avcodec(AVCodec *codec) 00099 { 00100 avcodec_register(codec); 00101 } 00102 #endif 00103 00104 unsigned avcodec_get_edge_width(void) 00105 { 00106 return EDGE_WIDTH; 00107 } 00108 00109 void avcodec_set_dimensions(AVCodecContext *s, int width, int height){ 00110 s->coded_width = width; 00111 s->coded_height= height; 00112 s->width = -((-width )>>s->lowres); 00113 s->height= -((-height)>>s->lowres); 00114 } 00115 00116 typedef struct InternalBuffer{ 00117 int last_pic_num; 00118 uint8_t *base[4]; 00119 uint8_t *data[4]; 00120 int linesize[4]; 00121 int width, height; 00122 enum PixelFormat pix_fmt; 00123 }InternalBuffer; 00124 00125 #define INTERNAL_BUFFER_SIZE 32 00126 00127 void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[4]){ 00128 int w_align= 1; 00129 int h_align= 1; 00130 00131 switch(s->pix_fmt){ 00132 case PIX_FMT_YUV420P: 00133 case PIX_FMT_YUYV422: 00134 case PIX_FMT_UYVY422: 00135 case PIX_FMT_YUV422P: 00136 case PIX_FMT_YUV440P: 00137 case PIX_FMT_YUV444P: 00138 case PIX_FMT_GRAY8: 00139 case PIX_FMT_GRAY16BE: 00140 case PIX_FMT_GRAY16LE: 00141 case PIX_FMT_YUVJ420P: 00142 case PIX_FMT_YUVJ422P: 00143 case PIX_FMT_YUVJ440P: 00144 case PIX_FMT_YUVJ444P: 00145 case PIX_FMT_YUVA420P: 00146 w_align= 16; //FIXME check for non mpeg style codecs and use less alignment 00147 h_align= 16; 00148 if(s->codec_id == CODEC_ID_MPEG2VIDEO || s->codec_id == CODEC_ID_MJPEG || s->codec_id == CODEC_ID_AMV || s->codec_id == CODEC_ID_THP) 00149 h_align= 32; // interlaced is rounded up to 2 MBs 00150 break; 00151 case PIX_FMT_YUV411P: 00152 case PIX_FMT_UYYVYY411: 00153 w_align=32; 00154 h_align=8; 00155 break; 00156 case PIX_FMT_YUV410P: 00157 if(s->codec_id == CODEC_ID_SVQ1){ 00158 w_align=64; 00159 h_align=64; 00160 } 00161 case PIX_FMT_RGB555: 00162 if(s->codec_id == CODEC_ID_RPZA){ 00163 w_align=4; 00164 h_align=4; 00165 } 00166 case PIX_FMT_PAL8: 00167 case PIX_FMT_BGR8: 00168 case PIX_FMT_RGB8: 00169 if(s->codec_id == CODEC_ID_SMC){ 00170 w_align=4; 00171 h_align=4; 00172 } 00173 break; 00174 case PIX_FMT_BGR24: 00175 if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){ 00176 w_align=4; 00177 h_align=4; 00178 } 00179 break; 00180 default: 00181 w_align= 1; 00182 h_align= 1; 00183 break; 00184 } 00185 00186 *width = FFALIGN(*width , w_align); 00187 *height= FFALIGN(*height, h_align); 00188 if(s->codec_id == CODEC_ID_H264) 00189 *height+=2; // some of the optimized chroma MC reads one line too much 00190 00191 linesize_align[0] = 00192 linesize_align[1] = 00193 linesize_align[2] = 00194 linesize_align[3] = STRIDE_ALIGN; 00195 //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes 00196 //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the 00197 //picture size unneccessarily in some cases. The solution here is not 00198 //pretty and better ideas are welcome! 00199 #if HAVE_MMX 00200 if(s->codec_id == CODEC_ID_SVQ1 || s->codec_id == CODEC_ID_VP5 || 00201 s->codec_id == CODEC_ID_VP6 || s->codec_id == CODEC_ID_VP6F || 00202 s->codec_id == CODEC_ID_VP6A) { 00203 linesize_align[0] = 00204 linesize_align[1] = 00205 linesize_align[2] = 16; 00206 } 00207 #endif 00208 } 00209 00210 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){ 00211 int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w; 00212 int linesize_align[4]; 00213 int align; 00214 avcodec_align_dimensions2(s, width, height, linesize_align); 00215 align = FFMAX(linesize_align[0], linesize_align[3]); 00216 linesize_align[1] <<= chroma_shift; 00217 linesize_align[2] <<= chroma_shift; 00218 align = FFMAX3(align, linesize_align[1], linesize_align[2]); 00219 *width=FFALIGN(*width, align); 00220 } 00221 00222 int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){ 00223 if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8) 00224 return 0; 00225 00226 av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h); 00227 return AVERROR(EINVAL); 00228 } 00229 00230 int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){ 00231 int i; 00232 int w= s->width; 00233 int h= s->height; 00234 InternalBuffer *buf; 00235 int *picture_number; 00236 00237 if(pic->data[0]!=NULL) { 00238 av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n"); 00239 return -1; 00240 } 00241 if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) { 00242 av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n"); 00243 return -1; 00244 } 00245 00246 if(avcodec_check_dimensions(s,w,h)) 00247 return -1; 00248 00249 if(s->internal_buffer==NULL){ 00250 s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer)); 00251 } 00252 #if 0 00253 s->internal_buffer= av_fast_realloc( 00254 s->internal_buffer, 00255 &s->internal_buffer_size, 00256 sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/ 00257 ); 00258 #endif 00259 00260 buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count]; 00261 picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack 00262 (*picture_number)++; 00263 00264 if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){ 00265 for(i=0; i<4; i++){ 00266 av_freep(&buf->base[i]); 00267 buf->data[i]= NULL; 00268 } 00269 } 00270 00271 if(buf->base[0]){ 00272 pic->age= *picture_number - buf->last_pic_num; 00273 buf->last_pic_num= *picture_number; 00274 }else{ 00275 int h_chroma_shift, v_chroma_shift; 00276 int size[4] = {0}; 00277 int tmpsize; 00278 int unaligned; 00279 AVPicture picture; 00280 int stride_align[4]; 00281 00282 avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift); 00283 00284 avcodec_align_dimensions2(s, &w, &h, stride_align); 00285 00286 if(!(s->flags&CODEC_FLAG_EMU_EDGE)){ 00287 w+= EDGE_WIDTH*2; 00288 h+= EDGE_WIDTH*2; 00289 } 00290 00291 do { 00292 // NOTE: do not align linesizes individually, this breaks e.g. assumptions 00293 // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2 00294 ff_fill_linesize(&picture, s->pix_fmt, w); 00295 // increase alignment of w for next try (rhs gives the lowest bit set in w) 00296 w += w & ~(w-1); 00297 00298 unaligned = 0; 00299 for (i=0; i<4; i++){ 00300 unaligned |= picture.linesize[i] % stride_align[i]; 00301 } 00302 } while (unaligned); 00303 00304 tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h); 00305 if (tmpsize < 0) 00306 return -1; 00307 00308 for (i=0; i<3 && picture.data[i+1]; i++) 00309 size[i] = picture.data[i+1] - picture.data[i]; 00310 size[i] = tmpsize - (picture.data[i] - picture.data[0]); 00311 00312 buf->last_pic_num= -256*256*256*64; 00313 memset(buf->base, 0, sizeof(buf->base)); 00314 memset(buf->data, 0, sizeof(buf->data)); 00315 00316 for(i=0; i<4 && size[i]; i++){ 00317 const int h_shift= i==0 ? 0 : h_chroma_shift; 00318 const int v_shift= i==0 ? 0 : v_chroma_shift; 00319 00320 buf->linesize[i]= picture.linesize[i]; 00321 00322 buf->base[i]= av_malloc(size[i]+16); //FIXME 16 00323 if(buf->base[i]==NULL) return -1; 00324 memset(buf->base[i], 128, size[i]); 00325 00326 // no edge if EDEG EMU or not planar YUV 00327 if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2]) 00328 buf->data[i] = buf->base[i]; 00329 else 00330 buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]); 00331 } 00332 if(size[1] && !size[2]) 00333 ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt); 00334 buf->width = s->width; 00335 buf->height = s->height; 00336 buf->pix_fmt= s->pix_fmt; 00337 pic->age= 256*256*256*64; 00338 } 00339 pic->type= FF_BUFFER_TYPE_INTERNAL; 00340 00341 for(i=0; i<4; i++){ 00342 pic->base[i]= buf->base[i]; 00343 pic->data[i]= buf->data[i]; 00344 pic->linesize[i]= buf->linesize[i]; 00345 } 00346 s->internal_buffer_count++; 00347 00348 pic->reordered_opaque= s->reordered_opaque; 00349 00350 if(s->debug&FF_DEBUG_BUFFERS) 00351 av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count); 00352 00353 return 0; 00354 } 00355 00356 void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){ 00357 int i; 00358 InternalBuffer *buf, *last; 00359 00360 assert(pic->type==FF_BUFFER_TYPE_INTERNAL); 00361 assert(s->internal_buffer_count); 00362 00363 buf = NULL; /* avoids warning */ 00364 for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize 00365 buf= &((InternalBuffer*)s->internal_buffer)[i]; 00366 if(buf->data[0] == pic->data[0]) 00367 break; 00368 } 00369 assert(i < s->internal_buffer_count); 00370 s->internal_buffer_count--; 00371 last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count]; 00372 00373 FFSWAP(InternalBuffer, *buf, *last); 00374 00375 for(i=0; i<4; i++){ 00376 pic->data[i]=NULL; 00377 // pic->base[i]=NULL; 00378 } 00379 //printf("R%X\n", pic->opaque); 00380 00381 if(s->debug&FF_DEBUG_BUFFERS) 00382 av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count); 00383 } 00384 00385 int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){ 00386 AVFrame temp_pic; 00387 int i; 00388 00389 /* If no picture return a new buffer */ 00390 if(pic->data[0] == NULL) { 00391 /* We will copy from buffer, so must be readable */ 00392 pic->buffer_hints |= FF_BUFFER_HINTS_READABLE; 00393 return s->get_buffer(s, pic); 00394 } 00395 00396 /* If internal buffer type return the same buffer */ 00397 if(pic->type == FF_BUFFER_TYPE_INTERNAL) { 00398 pic->reordered_opaque= s->reordered_opaque; 00399 return 0; 00400 } 00401 00402 /* 00403 * Not internal type and reget_buffer not overridden, emulate cr buffer 00404 */ 00405 temp_pic = *pic; 00406 for(i = 0; i < 4; i++) 00407 pic->data[i] = pic->base[i] = NULL; 00408 pic->opaque = NULL; 00409 /* Allocate new frame */ 00410 if (s->get_buffer(s, pic)) 00411 return -1; 00412 /* Copy image data from old buffer to new buffer */ 00413 av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width, 00414 s->height); 00415 s->release_buffer(s, &temp_pic); // Release old frame 00416 return 0; 00417 } 00418 00419 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){ 00420 int i; 00421 00422 for(i=0; i<count; i++){ 00423 int r= func(c, (char*)arg + i*size); 00424 if(ret) ret[i]= r; 00425 } 00426 return 0; 00427 } 00428 00429 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){ 00430 int i; 00431 00432 for(i=0; i<count; i++){ 00433 int r= func(c, arg, i, 0); 00434 if(ret) ret[i]= r; 00435 } 00436 return 0; 00437 } 00438 00439 enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){ 00440 while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt)) 00441 ++fmt; 00442 return fmt[0]; 00443 } 00444 00445 void avcodec_get_frame_defaults(AVFrame *pic){ 00446 memset(pic, 0, sizeof(AVFrame)); 00447 00448 pic->pts= AV_NOPTS_VALUE; 00449 pic->key_frame= 1; 00450 } 00451 00452 AVFrame *avcodec_alloc_frame(void){ 00453 AVFrame *pic= av_malloc(sizeof(AVFrame)); 00454 00455 if(pic==NULL) return NULL; 00456 00457 avcodec_get_frame_defaults(pic); 00458 00459 return pic; 00460 } 00461 00462 int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec) 00463 { 00464 int ret= -1; 00465 00466 /* If there is a user-supplied mutex locking routine, call it. */ 00467 if (ff_lockmgr_cb) { 00468 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) 00469 return -1; 00470 } 00471 00472 entangled_thread_counter++; 00473 if(entangled_thread_counter != 1){ 00474 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n"); 00475 goto end; 00476 } 00477 00478 if(avctx->codec || !codec) 00479 goto end; 00480 00481 if (codec->priv_data_size > 0) { 00482 avctx->priv_data = av_mallocz(codec->priv_data_size); 00483 if (!avctx->priv_data) { 00484 ret = AVERROR(ENOMEM); 00485 goto end; 00486 } 00487 } else { 00488 avctx->priv_data = NULL; 00489 } 00490 00491 if(avctx->coded_width && avctx->coded_height) 00492 avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height); 00493 else if(avctx->width && avctx->height) 00494 avcodec_set_dimensions(avctx, avctx->width, avctx->height); 00495 00496 #define SANE_NB_CHANNELS 128U 00497 if (((avctx->coded_width || avctx->coded_height) 00498 && avcodec_check_dimensions(avctx, avctx->coded_width, avctx->coded_height)) 00499 || avctx->channels > SANE_NB_CHANNELS) { 00500 ret = AVERROR(EINVAL); 00501 goto free_and_end; 00502 } 00503 00504 avctx->codec = codec; 00505 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) && 00506 avctx->codec_id == CODEC_ID_NONE) { 00507 avctx->codec_type = codec->type; 00508 avctx->codec_id = codec->id; 00509 } 00510 if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){ 00511 av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n"); 00512 goto free_and_end; 00513 } 00514 avctx->frame_number = 0; 00515 if(avctx->codec->init){ 00516 ret = avctx->codec->init(avctx); 00517 if (ret < 0) { 00518 goto free_and_end; 00519 } 00520 } 00521 ret=0; 00522 end: 00523 entangled_thread_counter--; 00524 00525 /* Release any user-supplied mutex. */ 00526 if (ff_lockmgr_cb) { 00527 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); 00528 } 00529 return ret; 00530 free_and_end: 00531 av_freep(&avctx->priv_data); 00532 avctx->codec= NULL; 00533 goto end; 00534 } 00535 00536 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, 00537 const short *samples) 00538 { 00539 if(buf_size < FF_MIN_BUFFER_SIZE && 0){ 00540 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n"); 00541 return -1; 00542 } 00543 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){ 00544 int ret = avctx->codec->encode(avctx, buf, buf_size, samples); 00545 avctx->frame_number++; 00546 return ret; 00547 }else 00548 return 0; 00549 } 00550 00551 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, 00552 const AVFrame *pict) 00553 { 00554 if(buf_size < FF_MIN_BUFFER_SIZE){ 00555 av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n"); 00556 return -1; 00557 } 00558 if(avcodec_check_dimensions(avctx,avctx->width,avctx->height)) 00559 return -1; 00560 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){ 00561 int ret = avctx->codec->encode(avctx, buf, buf_size, pict); 00562 avctx->frame_number++; 00563 emms_c(); //needed to avoid an emms_c() call before every return; 00564 00565 return ret; 00566 }else 00567 return 0; 00568 } 00569 00570 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, 00571 const AVSubtitle *sub) 00572 { 00573 int ret; 00574 if(sub->start_display_time) { 00575 av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n"); 00576 return -1; 00577 } 00578 if(sub->num_rects == 0 || !sub->rects) 00579 return -1; 00580 ret = avctx->codec->encode(avctx, buf, buf_size, sub); 00581 avctx->frame_number++; 00582 return ret; 00583 } 00584 00585 #if LIBAVCODEC_VERSION_MAJOR < 53 00586 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, 00587 int *got_picture_ptr, 00588 const uint8_t *buf, int buf_size) 00589 { 00590 AVPacket avpkt; 00591 av_init_packet(&avpkt); 00592 avpkt.data = buf; 00593 avpkt.size = buf_size; 00594 // HACK for CorePNG to decode as normal PNG by default 00595 avpkt.flags = AV_PKT_FLAG_KEY; 00596 00597 return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt); 00598 } 00599 #endif 00600 00601 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, 00602 int *got_picture_ptr, 00603 AVPacket *avpkt) 00604 { 00605 int ret; 00606 00607 *got_picture_ptr= 0; 00608 if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)) 00609 return -1; 00610 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){ 00611 ret = avctx->codec->decode(avctx, picture, got_picture_ptr, 00612 avpkt); 00613 00614 emms_c(); //needed to avoid an emms_c() call before every return; 00615 00616 if (*got_picture_ptr) 00617 avctx->frame_number++; 00618 }else 00619 ret= 0; 00620 00621 return ret; 00622 } 00623 00624 #if LIBAVCODEC_VERSION_MAJOR < 53 00625 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples, 00626 int *frame_size_ptr, 00627 const uint8_t *buf, int buf_size) 00628 { 00629 AVPacket avpkt; 00630 av_init_packet(&avpkt); 00631 avpkt.data = buf; 00632 avpkt.size = buf_size; 00633 00634 return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt); 00635 } 00636 #endif 00637 00638 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples, 00639 int *frame_size_ptr, 00640 AVPacket *avpkt) 00641 { 00642 int ret; 00643 00644 if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){ 00645 //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough 00646 if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){ 00647 av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n"); 00648 return -1; 00649 } 00650 if(*frame_size_ptr < FF_MIN_BUFFER_SIZE || 00651 *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){ 00652 av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr); 00653 return -1; 00654 } 00655 00656 ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt); 00657 avctx->frame_number++; 00658 }else{ 00659 ret= 0; 00660 *frame_size_ptr=0; 00661 } 00662 return ret; 00663 } 00664 00665 #if LIBAVCODEC_VERSION_MAJOR < 53 00666 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub, 00667 int *got_sub_ptr, 00668 const uint8_t *buf, int buf_size) 00669 { 00670 AVPacket avpkt; 00671 av_init_packet(&avpkt); 00672 avpkt.data = buf; 00673 avpkt.size = buf_size; 00674 00675 return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt); 00676 } 00677 #endif 00678 00679 int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, 00680 int *got_sub_ptr, 00681 AVPacket *avpkt) 00682 { 00683 int ret; 00684 00685 *got_sub_ptr = 0; 00686 ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt); 00687 if (*got_sub_ptr) 00688 avctx->frame_number++; 00689 return ret; 00690 } 00691 00692 av_cold int avcodec_close(AVCodecContext *avctx) 00693 { 00694 /* If there is a user-supplied mutex locking routine, call it. */ 00695 if (ff_lockmgr_cb) { 00696 if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) 00697 return -1; 00698 } 00699 00700 entangled_thread_counter++; 00701 if(entangled_thread_counter != 1){ 00702 av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n"); 00703 entangled_thread_counter--; 00704 return -1; 00705 } 00706 00707 if (HAVE_THREADS && avctx->thread_opaque) 00708 avcodec_thread_free(avctx); 00709 if (avctx->codec && avctx->codec->close) 00710 avctx->codec->close(avctx); 00711 avcodec_default_free_buffers(avctx); 00712 av_freep(&avctx->priv_data); 00713 if(avctx->codec && avctx->codec->encode) 00714 av_freep(&avctx->extradata); 00715 avctx->codec = NULL; 00716 entangled_thread_counter--; 00717 00718 /* Release any user-supplied mutex. */ 00719 if (ff_lockmgr_cb) { 00720 (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); 00721 } 00722 return 0; 00723 } 00724 00725 AVCodec *avcodec_find_encoder(enum CodecID id) 00726 { 00727 AVCodec *p, *experimental=NULL; 00728 p = first_avcodec; 00729 while (p) { 00730 if (p->encode != NULL && p->id == id) { 00731 if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) { 00732 experimental = p; 00733 } else 00734 return p; 00735 } 00736 p = p->next; 00737 } 00738 return experimental; 00739 } 00740 00741 AVCodec *avcodec_find_encoder_by_name(const char *name) 00742 { 00743 AVCodec *p; 00744 if (!name) 00745 return NULL; 00746 p = first_avcodec; 00747 while (p) { 00748 if (p->encode != NULL && strcmp(name,p->name) == 0) 00749 return p; 00750 p = p->next; 00751 } 00752 return NULL; 00753 } 00754 00755 AVCodec *avcodec_find_decoder(enum CodecID id) 00756 { 00757 AVCodec *p; 00758 p = first_avcodec; 00759 while (p) { 00760 if (p->decode != NULL && p->id == id) 00761 return p; 00762 p = p->next; 00763 } 00764 return NULL; 00765 } 00766 00767 AVCodec *avcodec_find_decoder_by_name(const char *name) 00768 { 00769 AVCodec *p; 00770 if (!name) 00771 return NULL; 00772 p = first_avcodec; 00773 while (p) { 00774 if (p->decode != NULL && strcmp(name,p->name) == 0) 00775 return p; 00776 p = p->next; 00777 } 00778 return NULL; 00779 } 00780 00781 static int get_bit_rate(AVCodecContext *ctx) 00782 { 00783 int bit_rate; 00784 int bits_per_sample; 00785 00786 switch(ctx->codec_type) { 00787 case AVMEDIA_TYPE_VIDEO: 00788 case AVMEDIA_TYPE_DATA: 00789 case AVMEDIA_TYPE_SUBTITLE: 00790 case AVMEDIA_TYPE_ATTACHMENT: 00791 bit_rate = ctx->bit_rate; 00792 break; 00793 case AVMEDIA_TYPE_AUDIO: 00794 bits_per_sample = av_get_bits_per_sample(ctx->codec_id); 00795 bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate; 00796 break; 00797 default: 00798 bit_rate = 0; 00799 break; 00800 } 00801 return bit_rate; 00802 } 00803 00804 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode) 00805 { 00806 const char *codec_name; 00807 AVCodec *p; 00808 char buf1[32]; 00809 int bitrate; 00810 AVRational display_aspect_ratio; 00811 00812 if (encode) 00813 p = avcodec_find_encoder(enc->codec_id); 00814 else 00815 p = avcodec_find_decoder(enc->codec_id); 00816 00817 if (p) { 00818 codec_name = p->name; 00819 } else if (enc->codec_id == CODEC_ID_MPEG2TS) { 00820 /* fake mpeg2 transport stream codec (currently not 00821 registered) */ 00822 codec_name = "mpeg2ts"; 00823 } else if (enc->codec_name[0] != '\0') { 00824 codec_name = enc->codec_name; 00825 } else { 00826 /* output avi tags */ 00827 if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF) 00828 && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){ 00829 snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X", 00830 enc->codec_tag & 0xff, 00831 (enc->codec_tag >> 8) & 0xff, 00832 (enc->codec_tag >> 16) & 0xff, 00833 (enc->codec_tag >> 24) & 0xff, 00834 enc->codec_tag); 00835 } else { 00836 snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag); 00837 } 00838 codec_name = buf1; 00839 } 00840 00841 switch(enc->codec_type) { 00842 case AVMEDIA_TYPE_VIDEO: 00843 snprintf(buf, buf_size, 00844 "Video: %s%s", 00845 codec_name, enc->mb_decision ? " (hq)" : ""); 00846 if (enc->pix_fmt != PIX_FMT_NONE) { 00847 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00848 ", %s", 00849 avcodec_get_pix_fmt_name(enc->pix_fmt)); 00850 } 00851 if (enc->width) { 00852 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00853 ", %dx%d", 00854 enc->width, enc->height); 00855 if (enc->sample_aspect_ratio.num) { 00856 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den, 00857 enc->width*enc->sample_aspect_ratio.num, 00858 enc->height*enc->sample_aspect_ratio.den, 00859 1024*1024); 00860 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00861 " [PAR %d:%d DAR %d:%d]", 00862 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den, 00863 display_aspect_ratio.num, display_aspect_ratio.den); 00864 } 00865 if(av_log_get_level() >= AV_LOG_DEBUG){ 00866 int g= av_gcd(enc->time_base.num, enc->time_base.den); 00867 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00868 ", %d/%d", 00869 enc->time_base.num/g, enc->time_base.den/g); 00870 } 00871 } 00872 if (encode) { 00873 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00874 ", q=%d-%d", enc->qmin, enc->qmax); 00875 } 00876 break; 00877 case AVMEDIA_TYPE_AUDIO: 00878 snprintf(buf, buf_size, 00879 "Audio: %s", 00880 codec_name); 00881 if (enc->sample_rate) { 00882 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00883 ", %d Hz", enc->sample_rate); 00884 } 00885 av_strlcat(buf, ", ", buf_size); 00886 avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout); 00887 if (enc->sample_fmt != SAMPLE_FMT_NONE) { 00888 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00889 ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt)); 00890 } 00891 break; 00892 case AVMEDIA_TYPE_DATA: 00893 snprintf(buf, buf_size, "Data: %s", codec_name); 00894 break; 00895 case AVMEDIA_TYPE_SUBTITLE: 00896 snprintf(buf, buf_size, "Subtitle: %s", codec_name); 00897 break; 00898 case AVMEDIA_TYPE_ATTACHMENT: 00899 snprintf(buf, buf_size, "Attachment: %s", codec_name); 00900 break; 00901 default: 00902 snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type); 00903 return; 00904 } 00905 if (encode) { 00906 if (enc->flags & CODEC_FLAG_PASS1) 00907 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00908 ", pass 1"); 00909 if (enc->flags & CODEC_FLAG_PASS2) 00910 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00911 ", pass 2"); 00912 } 00913 bitrate = get_bit_rate(enc); 00914 if (bitrate != 0) { 00915 snprintf(buf + strlen(buf), buf_size - strlen(buf), 00916 ", %d kb/s", bitrate / 1000); 00917 } 00918 } 00919 00920 unsigned avcodec_version( void ) 00921 { 00922 return LIBAVCODEC_VERSION_INT; 00923 } 00924 00925 const char *avcodec_configuration(void) 00926 { 00927 return FFMPEG_CONFIGURATION; 00928 } 00929 00930 const char *avcodec_license(void) 00931 { 00932 #define LICENSE_PREFIX "libavcodec license: " 00933 return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; 00934 } 00935 00936 void avcodec_init(void) 00937 { 00938 static int initialized = 0; 00939 00940 if (initialized != 0) 00941 return; 00942 initialized = 1; 00943 00944 dsputil_static_init(); 00945 } 00946 00947 void avcodec_flush_buffers(AVCodecContext *avctx) 00948 { 00949 if(avctx->codec->flush) 00950 avctx->codec->flush(avctx); 00951 } 00952 00953 void avcodec_default_free_buffers(AVCodecContext *s){ 00954 int i, j; 00955 00956 if(s->internal_buffer==NULL) return; 00957 00958 if (s->internal_buffer_count) 00959 av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count); 00960 for(i=0; i<INTERNAL_BUFFER_SIZE; i++){ 00961 InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i]; 00962 for(j=0; j<4; j++){ 00963 av_freep(&buf->base[j]); 00964 buf->data[j]= NULL; 00965 } 00966 } 00967 av_freep(&s->internal_buffer); 00968 00969 s->internal_buffer_count=0; 00970 } 00971 00972 char av_get_pict_type_char(int pict_type){ 00973 switch(pict_type){ 00974 case FF_I_TYPE: return 'I'; 00975 case FF_P_TYPE: return 'P'; 00976 case FF_B_TYPE: return 'B'; 00977 case FF_S_TYPE: return 'S'; 00978 case FF_SI_TYPE:return 'i'; 00979 case FF_SP_TYPE:return 'p'; 00980 case FF_BI_TYPE:return 'b'; 00981 default: return '?'; 00982 } 00983 } 00984 00985 int av_get_bits_per_sample(enum CodecID codec_id){ 00986 switch(codec_id){ 00987 case CODEC_ID_ADPCM_SBPRO_2: 00988 return 2; 00989 case CODEC_ID_ADPCM_SBPRO_3: 00990 return 3; 00991 case CODEC_ID_ADPCM_SBPRO_4: 00992 case CODEC_ID_ADPCM_CT: 00993 case CODEC_ID_ADPCM_IMA_WAV: 00994 case CODEC_ID_ADPCM_MS: 00995 case CODEC_ID_ADPCM_YAMAHA: 00996 return 4; 00997 case CODEC_ID_PCM_ALAW: 00998 case CODEC_ID_PCM_MULAW: 00999 case CODEC_ID_PCM_S8: 01000 case CODEC_ID_PCM_U8: 01001 case CODEC_ID_PCM_ZORK: 01002 return 8; 01003 case CODEC_ID_PCM_S16BE: 01004 case CODEC_ID_PCM_S16LE: 01005 case CODEC_ID_PCM_S16LE_PLANAR: 01006 case CODEC_ID_PCM_U16BE: 01007 case CODEC_ID_PCM_U16LE: 01008 return 16; 01009 case CODEC_ID_PCM_S24DAUD: 01010 case CODEC_ID_PCM_S24BE: 01011 case CODEC_ID_PCM_S24LE: 01012 case CODEC_ID_PCM_U24BE: 01013 case CODEC_ID_PCM_U24LE: 01014 return 24; 01015 case CODEC_ID_PCM_S32BE: 01016 case CODEC_ID_PCM_S32LE: 01017 case CODEC_ID_PCM_U32BE: 01018 case CODEC_ID_PCM_U32LE: 01019 case CODEC_ID_PCM_F32BE: 01020 case CODEC_ID_PCM_F32LE: 01021 return 32; 01022 case CODEC_ID_PCM_F64BE: 01023 case CODEC_ID_PCM_F64LE: 01024 return 64; 01025 default: 01026 return 0; 01027 } 01028 } 01029 01030 int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) { 01031 switch (sample_fmt) { 01032 case SAMPLE_FMT_U8: 01033 return 8; 01034 case SAMPLE_FMT_S16: 01035 return 16; 01036 case SAMPLE_FMT_S32: 01037 case SAMPLE_FMT_FLT: 01038 return 32; 01039 case SAMPLE_FMT_DBL: 01040 return 64; 01041 default: 01042 return 0; 01043 } 01044 } 01045 01046 #if !HAVE_THREADS 01047 int avcodec_thread_init(AVCodecContext *s, int thread_count){ 01048 s->thread_count = thread_count; 01049 return -1; 01050 } 01051 #endif 01052 01053 unsigned int av_xiphlacing(unsigned char *s, unsigned int v) 01054 { 01055 unsigned int n = 0; 01056 01057 while(v >= 0xff) { 01058 *s++ = 0xff; 01059 v -= 0xff; 01060 n++; 01061 } 01062 *s = v; 01063 n++; 01064 return n; 01065 } 01066 01067 /* Wrapper to work around the lack of mkstemp() on mingw/cygin. 01068 * Also, tries to create file in /tmp first, if possible. 01069 * *prefix can be a character constant; *filename will be allocated internally. 01070 * Returns file descriptor of opened file (or -1 on error) 01071 * and opened file name in **filename. */ 01072 int av_tempfile(char *prefix, char **filename) { 01073 int fd=-1; 01074 #if !HAVE_MKSTEMP 01075 *filename = tempnam(".", prefix); 01076 #else 01077 size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */ 01078 *filename = av_malloc(len); 01079 #endif 01080 /* -----common section-----*/ 01081 if (*filename == NULL) { 01082 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n"); 01083 return -1; 01084 } 01085 #if !HAVE_MKSTEMP 01086 fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444); 01087 #else 01088 snprintf(*filename, len, "/tmp/%sXXXXXX", prefix); 01089 fd = mkstemp(*filename); 01090 if (fd < 0) { 01091 snprintf(*filename, len, "./%sXXXXXX", prefix); 01092 fd = mkstemp(*filename); 01093 } 01094 #endif 01095 /* -----common section-----*/ 01096 if (fd < 0) { 01097 av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename); 01098 return -1; 01099 } 01100 return fd; /* success */ 01101 } 01102 01103 typedef struct { 01104 const char *abbr; 01105 int width, height; 01106 } VideoFrameSizeAbbr; 01107 01108 typedef struct { 01109 const char *abbr; 01110 int rate_num, rate_den; 01111 } VideoFrameRateAbbr; 01112 01113 static const VideoFrameSizeAbbr video_frame_size_abbrs[] = { 01114 { "ntsc", 720, 480 }, 01115 { "pal", 720, 576 }, 01116 { "qntsc", 352, 240 }, /* VCD compliant NTSC */ 01117 { "qpal", 352, 288 }, /* VCD compliant PAL */ 01118 { "sntsc", 640, 480 }, /* square pixel NTSC */ 01119 { "spal", 768, 576 }, /* square pixel PAL */ 01120 { "film", 352, 240 }, 01121 { "ntsc-film", 352, 240 }, 01122 { "sqcif", 128, 96 }, 01123 { "qcif", 176, 144 }, 01124 { "cif", 352, 288 }, 01125 { "4cif", 704, 576 }, 01126 { "16cif", 1408,1152 }, 01127 { "qqvga", 160, 120 }, 01128 { "qvga", 320, 240 }, 01129 { "vga", 640, 480 }, 01130 { "svga", 800, 600 }, 01131 { "xga", 1024, 768 }, 01132 { "uxga", 1600,1200 }, 01133 { "qxga", 2048,1536 }, 01134 { "sxga", 1280,1024 }, 01135 { "qsxga", 2560,2048 }, 01136 { "hsxga", 5120,4096 }, 01137 { "wvga", 852, 480 }, 01138 { "wxga", 1366, 768 }, 01139 { "wsxga", 1600,1024 }, 01140 { "wuxga", 1920,1200 }, 01141 { "woxga", 2560,1600 }, 01142 { "wqsxga", 3200,2048 }, 01143 { "wquxga", 3840,2400 }, 01144 { "whsxga", 6400,4096 }, 01145 { "whuxga", 7680,4800 }, 01146 { "cga", 320, 200 }, 01147 { "ega", 640, 350 }, 01148 { "hd480", 852, 480 }, 01149 { "hd720", 1280, 720 }, 01150 { "hd1080", 1920,1080 }, 01151 }; 01152 01153 static const VideoFrameRateAbbr video_frame_rate_abbrs[]= { 01154 { "ntsc", 30000, 1001 }, 01155 { "pal", 25, 1 }, 01156 { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */ 01157 { "qpal", 25, 1 }, /* VCD compliant PAL */ 01158 { "sntsc", 30000, 1001 }, /* square pixel NTSC */ 01159 { "spal", 25, 1 }, /* square pixel PAL */ 01160 { "film", 24, 1 }, 01161 { "ntsc-film", 24000, 1001 }, 01162 }; 01163 01164 int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str) 01165 { 01166 int i; 01167 int n = FF_ARRAY_ELEMS(video_frame_size_abbrs); 01168 char *p; 01169 int frame_width = 0, frame_height = 0; 01170 01171 for(i=0;i<n;i++) { 01172 if (!strcmp(video_frame_size_abbrs[i].abbr, str)) { 01173 frame_width = video_frame_size_abbrs[i].width; 01174 frame_height = video_frame_size_abbrs[i].height; 01175 break; 01176 } 01177 } 01178 if (i == n) { 01179 p = str; 01180 frame_width = strtol(p, &p, 10); 01181 if (*p) 01182 p++; 01183 frame_height = strtol(p, &p, 10); 01184 } 01185 if (frame_width <= 0 || frame_height <= 0) 01186 return -1; 01187 *width_ptr = frame_width; 01188 *height_ptr = frame_height; 01189 return 0; 01190 } 01191 01192 int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg) 01193 { 01194 int i; 01195 int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs); 01196 char* cp; 01197 01198 /* First, we check our abbreviation table */ 01199 for (i = 0; i < n; ++i) 01200 if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) { 01201 frame_rate->num = video_frame_rate_abbrs[i].rate_num; 01202 frame_rate->den = video_frame_rate_abbrs[i].rate_den; 01203 return 0; 01204 } 01205 01206 /* Then, we try to parse it as fraction */ 01207 cp = strchr(arg, '/'); 01208 if (!cp) 01209 cp = strchr(arg, ':'); 01210 if (cp) { 01211 char* cpp; 01212 frame_rate->num = strtol(arg, &cpp, 10); 01213 if (cpp != arg || cpp == cp) 01214 frame_rate->den = strtol(cp+1, &cpp, 10); 01215 else 01216 frame_rate->num = 0; 01217 } 01218 else { 01219 /* Finally we give up and parse it as double */ 01220 AVRational time_base = av_d2q(strtod(arg, 0), 1001000); 01221 frame_rate->den = time_base.den; 01222 frame_rate->num = time_base.num; 01223 } 01224 if (!frame_rate->num || !frame_rate->den) 01225 return -1; 01226 else 01227 return 0; 01228 } 01229 01230 int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){ 01231 int i; 01232 for(i=0; i<size && !(tab[i][0]==a && tab[i][1]==b); i++); 01233 return i; 01234 } 01235 01236 void av_log_missing_feature(void *avc, const char *feature, int want_sample) 01237 { 01238 av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg " 01239 "version to the newest one from SVN. If the problem still " 01240 "occurs, it means that your file has a feature which has not " 01241 "been implemented.", feature); 01242 if(want_sample) 01243 av_log_ask_for_sample(avc, NULL); 01244 else 01245 av_log(avc, AV_LOG_WARNING, "\n"); 01246 } 01247 01248 void av_log_ask_for_sample(void *avc, const char *msg) 01249 { 01250 if (msg) 01251 av_log(avc, AV_LOG_WARNING, "%s ", msg); 01252 av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample " 01253 "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ " 01254 "and contact the ffmpeg-devel mailing list.\n"); 01255 } 01256 01257 static AVHWAccel *first_hwaccel = NULL; 01258 01259 void av_register_hwaccel(AVHWAccel *hwaccel) 01260 { 01261 AVHWAccel **p = &first_hwaccel; 01262 while (*p) 01263 p = &(*p)->next; 01264 *p = hwaccel; 01265 hwaccel->next = NULL; 01266 } 01267 01268 AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel) 01269 { 01270 return hwaccel ? hwaccel->next : first_hwaccel; 01271 } 01272 01273 AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt) 01274 { 01275 AVHWAccel *hwaccel=NULL; 01276 01277 while((hwaccel= av_hwaccel_next(hwaccel))){ 01278 if ( hwaccel->id == codec_id 01279 && hwaccel->pix_fmt == pix_fmt) 01280 return hwaccel; 01281 } 01282 return NULL; 01283 } 01284 01285 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)) 01286 { 01287 if (ff_lockmgr_cb) { 01288 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY)) 01289 return -1; 01290 } 01291 01292 ff_lockmgr_cb = cb; 01293 01294 if (ff_lockmgr_cb) { 01295 if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE)) 01296 return -1; 01297 } 01298 return 0; 01299 }