/* * utils for libavcodec * Copyright (c) 2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file libavcodec/utils.c * utils. */ /* needed for mkstemp() */ #define _XOPEN_SOURCE 600 #include "libavutil/avstring.h" #include "libavutil/integer.h" #include "libavutil/crc.h" #include "avcodec.h" #include "dsputil.h" #include "opt.h" #include "imgconvert.h" #include "audioconvert.h" #include "internal.h" #include <stdlib.h> #include <stdarg.h> #include <limits.h> #include <float.h> #if !HAVE_MKSTEMP #include <fcntl.h> #endif static int volatile entangled_thread_counter=0; int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op); static void *codec_mutex; void *av_fast_realloc(void *ptr, unsigned int *size, unsigned int min_size) { if(min_size < *size) return ptr; *size= FFMAX(17*min_size/16 + 32, min_size); ptr= av_realloc(ptr, *size); 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 *size= 0; return ptr; } void av_fast_malloc(void *ptr, unsigned int *size, unsigned int min_size) { void **p = ptr; if (min_size < *size) return; *size= FFMAX(17*min_size/16 + 32, min_size); av_free(*p); *p = av_malloc(*size); if (!*p) *size = 0; } /* encoder management */ static AVCodec *first_avcodec = NULL; AVCodec *av_codec_next(AVCodec *c){ if(c) return c->next; else return first_avcodec; } void avcodec_register(AVCodec *codec) { AVCodec **p; avcodec_init(); p = &first_avcodec; while (*p != NULL) p = &(*p)->next; *p = codec; codec->next = NULL; } #if LIBAVCODEC_VERSION_MAJOR < 53 void register_avcodec(AVCodec *codec) { avcodec_register(codec); } #endif void avcodec_set_dimensions(AVCodecContext *s, int width, int height){ s->coded_width = width; s->coded_height= height; s->width = -((-width )>>s->lowres); s->height= -((-height)>>s->lowres); } typedef struct InternalBuffer{ int last_pic_num; uint8_t *base[4]; uint8_t *data[4]; int linesize[4]; int width, height; enum PixelFormat pix_fmt; }InternalBuffer; #define INTERNAL_BUFFER_SIZE 32 void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){ int w_align= 1; int h_align= 1; switch(s->pix_fmt){ case PIX_FMT_YUV420P: case PIX_FMT_YUYV422: case PIX_FMT_UYVY422: case PIX_FMT_YUV422P: case PIX_FMT_YUV440P: case PIX_FMT_YUV444P: case PIX_FMT_GRAY8: case PIX_FMT_GRAY16BE: case PIX_FMT_GRAY16LE: case PIX_FMT_YUVJ420P: case PIX_FMT_YUVJ422P: case PIX_FMT_YUVJ440P: case PIX_FMT_YUVJ444P: case PIX_FMT_YUVA420P: w_align= 16; //FIXME check for non mpeg style codecs and use less alignment h_align= 16; 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) h_align= 32; // interlaced is rounded up to 2 MBs break; case PIX_FMT_YUV411P: case PIX_FMT_UYYVYY411: w_align=32; h_align=8; break; case PIX_FMT_YUV410P: if(s->codec_id == CODEC_ID_SVQ1){ w_align=64; h_align=64; } case PIX_FMT_RGB555: if(s->codec_id == CODEC_ID_RPZA){ w_align=4; h_align=4; } case PIX_FMT_PAL8: case PIX_FMT_BGR8: case PIX_FMT_RGB8: if(s->codec_id == CODEC_ID_SMC){ w_align=4; h_align=4; } break; case PIX_FMT_BGR24: if((s->codec_id == CODEC_ID_MSZH) || (s->codec_id == CODEC_ID_ZLIB)){ w_align=4; h_align=4; } break; default: w_align= 1; h_align= 1; break; } *width = FFALIGN(*width , w_align); *height= FFALIGN(*height, h_align); if(s->codec_id == CODEC_ID_H264) *height+=2; // some of the optimized chroma MC reads one line too much } int avcodec_check_dimensions(void *av_log_ctx, unsigned int w, unsigned int h){ if((int)w>0 && (int)h>0 && (w+128)*(uint64_t)(h+128) < INT_MAX/8) return 0; av_log(av_log_ctx, AV_LOG_ERROR, "picture size invalid (%ux%u)\n", w, h); return -1; } int avcodec_default_get_buffer(AVCodecContext *s, AVFrame *pic){ int i; int w= s->width; int h= s->height; InternalBuffer *buf; int *picture_number; if(pic->data[0]!=NULL) { av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n"); return -1; } if(s->internal_buffer_count >= INTERNAL_BUFFER_SIZE) { av_log(s, AV_LOG_ERROR, "internal_buffer_count overflow (missing release_buffer?)\n"); return -1; } if(avcodec_check_dimensions(s,w,h)) return -1; if(s->internal_buffer==NULL){ s->internal_buffer= av_mallocz((INTERNAL_BUFFER_SIZE+1)*sizeof(InternalBuffer)); } #if 0 s->internal_buffer= av_fast_realloc( s->internal_buffer, &s->internal_buffer_size, sizeof(InternalBuffer)*FFMAX(99, s->internal_buffer_count+1)/*FIXME*/ ); #endif buf= &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count]; picture_number= &(((InternalBuffer*)s->internal_buffer)[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack (*picture_number)++; if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){ for(i=0; i<4; i++){ av_freep(&buf->base[i]); buf->data[i]= NULL; } } if(buf->base[0]){ pic->age= *picture_number - buf->last_pic_num; buf->last_pic_num= *picture_number; }else{ int h_chroma_shift, v_chroma_shift; int size[4] = {0}; int tmpsize; int unaligned; AVPicture picture; int stride_align[4]; avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift); avcodec_align_dimensions(s, &w, &h); if(!(s->flags&CODEC_FLAG_EMU_EDGE)){ w+= EDGE_WIDTH*2; h+= EDGE_WIDTH*2; } do { // NOTE: do not align linesizes individually, this breaks e.g. assumptions // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2 ff_fill_linesize(&picture, s->pix_fmt, w); // increase alignment of w for next try (rhs gives the lowest bit set in w) w += w & ~(w-1); unaligned = 0; for (i=0; i<4; i++){ //STRIDE_ALIGN is 8 for SSE* but this does not work for SVQ1 chroma planes //we could change STRIDE_ALIGN to 16 for x86/sse but it would increase the //picture size unneccessarily in some cases. The solution here is not //pretty and better ideas are welcome! #if HAVE_MMX if(s->codec_id == CODEC_ID_SVQ1) stride_align[i]= 16; else #endif stride_align[i] = STRIDE_ALIGN; unaligned |= picture.linesize[i] % stride_align[i]; } } while (unaligned); tmpsize = ff_fill_pointer(&picture, NULL, s->pix_fmt, h); if (tmpsize < 0) return -1; for (i=0; i<3 && picture.data[i+1]; i++) size[i] = picture.data[i+1] - picture.data[i]; size[i] = tmpsize - (picture.data[i] - picture.data[0]); buf->last_pic_num= -256*256*256*64; memset(buf->base, 0, sizeof(buf->base)); memset(buf->data, 0, sizeof(buf->data)); for(i=0; i<4 && size[i]; i++){ const int h_shift= i==0 ? 0 : h_chroma_shift; const int v_shift= i==0 ? 0 : v_chroma_shift; buf->linesize[i]= picture.linesize[i]; buf->base[i]= av_malloc(size[i]+16); //FIXME 16 if(buf->base[i]==NULL) return -1; memset(buf->base[i], 128, size[i]); // no edge if EDEG EMU or not planar YUV if((s->flags&CODEC_FLAG_EMU_EDGE) || !size[2]) buf->data[i] = buf->base[i]; else buf->data[i] = buf->base[i] + FFALIGN((buf->linesize[i]*EDGE_WIDTH>>v_shift) + (EDGE_WIDTH>>h_shift), stride_align[i]); } if(size[1] && !size[2]) ff_set_systematic_pal((uint32_t*)buf->data[1], s->pix_fmt); buf->width = s->width; buf->height = s->height; buf->pix_fmt= s->pix_fmt; pic->age= 256*256*256*64; } pic->type= FF_BUFFER_TYPE_INTERNAL; for(i=0; i<4; i++){ pic->base[i]= buf->base[i]; pic->data[i]= buf->data[i]; pic->linesize[i]= buf->linesize[i]; } s->internal_buffer_count++; pic->reordered_opaque= s->reordered_opaque; if(s->debug&FF_DEBUG_BUFFERS) av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count); return 0; } void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){ int i; InternalBuffer *buf, *last; assert(pic->type==FF_BUFFER_TYPE_INTERNAL); assert(s->internal_buffer_count); buf = NULL; /* avoids warning */ for(i=0; i<s->internal_buffer_count; i++){ //just 3-5 checks so is not worth to optimize buf= &((InternalBuffer*)s->internal_buffer)[i]; if(buf->data[0] == pic->data[0]) break; } assert(i < s->internal_buffer_count); s->internal_buffer_count--; last = &((InternalBuffer*)s->internal_buffer)[s->internal_buffer_count]; FFSWAP(InternalBuffer, *buf, *last); for(i=0; i<4; i++){ pic->data[i]=NULL; // pic->base[i]=NULL; } //printf("R%X\n", pic->opaque); if(s->debug&FF_DEBUG_BUFFERS) av_log(s, AV_LOG_DEBUG, "default_release_buffer called on pic %p, %d buffers used\n", pic, s->internal_buffer_count); } int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){ AVFrame temp_pic; int i; /* If no picture return a new buffer */ if(pic->data[0] == NULL) { /* We will copy from buffer, so must be readable */ pic->buffer_hints |= FF_BUFFER_HINTS_READABLE; return s->get_buffer(s, pic); } /* If internal buffer type return the same buffer */ if(pic->type == FF_BUFFER_TYPE_INTERNAL) { pic->reordered_opaque= s->reordered_opaque; return 0; } /* * Not internal type and reget_buffer not overridden, emulate cr buffer */ temp_pic = *pic; for(i = 0; i < 4; i++) pic->data[i] = pic->base[i] = NULL; pic->opaque = NULL; /* Allocate new frame */ if (s->get_buffer(s, pic)) return -1; /* Copy image data from old buffer to new buffer */ av_picture_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width, s->height); s->release_buffer(s, &temp_pic); // Release old frame return 0; } int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void *arg, int *ret, int count, int size){ int i; for(i=0; i<count; i++){ int r= func(c, (char*)arg + i*size); if(ret) ret[i]= r; } return 0; } int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr),void *arg, int *ret, int count){ int i; for(i=0; i<count; i++){ int r= func(c, arg, i, 0); if(ret) ret[i]= r; } return 0; } enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat *fmt){ while (*fmt != PIX_FMT_NONE && ff_is_hwaccel_pix_fmt(*fmt)) ++fmt; return fmt[0]; } void avcodec_get_frame_defaults(AVFrame *pic){ memset(pic, 0, sizeof(AVFrame)); pic->pts= AV_NOPTS_VALUE; pic->key_frame= 1; } AVFrame *avcodec_alloc_frame(void){ AVFrame *pic= av_malloc(sizeof(AVFrame)); if(pic==NULL) return NULL; avcodec_get_frame_defaults(pic); return pic; } int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec) { int ret= -1; /* If there is a user-supplied mutex locking routine, call it. */ if (ff_lockmgr_cb) { if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) return -1; } entangled_thread_counter++; if(entangled_thread_counter != 1){ av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n"); goto end; } if(avctx->codec || !codec) goto end; if (codec->priv_data_size > 0) { avctx->priv_data = av_mallocz(codec->priv_data_size); if (!avctx->priv_data) { ret = AVERROR(ENOMEM); goto end; } } else { avctx->priv_data = NULL; } if(avctx->coded_width && avctx->coded_height) avcodec_set_dimensions(avctx, avctx->coded_width, avctx->coded_height); else if(avctx->width && avctx->height) avcodec_set_dimensions(avctx, avctx->width, avctx->height); #define SANE_NB_CHANNELS 128U if (((avctx->coded_width || avctx->coded_height) && avcodec_check_dimensions(avctx, avctx->coded_width, avctx->coded_height)) || avctx->channels > SANE_NB_CHANNELS) { ret = AVERROR(EINVAL); goto free_and_end; } avctx->codec = codec; if ((avctx->codec_type == CODEC_TYPE_UNKNOWN || avctx->codec_type == codec->type) && avctx->codec_id == CODEC_ID_NONE) { avctx->codec_type = codec->type; avctx->codec_id = codec->id; } if(avctx->codec_id != codec->id || avctx->codec_type != codec->type){ av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n"); goto free_and_end; } avctx->frame_number = 0; if(avctx->codec->init){ ret = avctx->codec->init(avctx); if (ret < 0) { goto free_and_end; } } ret=0; end: entangled_thread_counter--; /* Release any user-supplied mutex. */ if (ff_lockmgr_cb) { (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); } return ret; free_and_end: av_freep(&avctx->priv_data); avctx->codec= NULL; goto end; } int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, const short *samples) { if(buf_size < FF_MIN_BUFFER_SIZE && 0){ av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n"); return -1; } if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){ int ret = avctx->codec->encode(avctx, buf, buf_size, samples); avctx->frame_number++; return ret; }else return 0; } int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVFrame *pict) { if(buf_size < FF_MIN_BUFFER_SIZE){ av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n"); return -1; } if(avcodec_check_dimensions(avctx,avctx->width,avctx->height)) return -1; if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){ int ret = avctx->codec->encode(avctx, buf, buf_size, pict); avctx->frame_number++; emms_c(); //needed to avoid an emms_c() call before every return; return ret; }else return 0; } int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVSubtitle *sub) { int ret; if(sub->start_display_time) { av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n"); return -1; } if(sub->num_rects == 0 || !sub->rects) return -1; ret = avctx->codec->encode(avctx, buf, buf_size, sub); avctx->frame_number++; return ret; } #if LIBAVCODEC_VERSION_MAJOR < 53 int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const uint8_t *buf, int buf_size) { AVPacket avpkt; av_init_packet(&avpkt); avpkt.data = buf; avpkt.size = buf_size; // HACK for CorePNG to decode as normal PNG by default avpkt.flags = AV_PKT_FLAG_KEY; return avcodec_decode_video2(avctx, picture, got_picture_ptr, &avpkt); } #endif int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt) { int ret; *got_picture_ptr= 0; if((avctx->coded_width||avctx->coded_height) && avcodec_check_dimensions(avctx,avctx->coded_width,avctx->coded_height)) return -1; if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){ ret = avctx->codec->decode(avctx, picture, got_picture_ptr, avpkt); emms_c(); //needed to avoid an emms_c() call before every return; if (*got_picture_ptr) avctx->frame_number++; }else ret= 0; return ret; } #if LIBAVCODEC_VERSION_MAJOR < 53 int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples, int *frame_size_ptr, const uint8_t *buf, int buf_size) { AVPacket avpkt; av_init_packet(&avpkt); avpkt.data = buf; avpkt.size = buf_size; return avcodec_decode_audio3(avctx, samples, frame_size_ptr, &avpkt); } #endif int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples, int *frame_size_ptr, AVPacket *avpkt) { int ret; if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size){ //FIXME remove the check below _after_ ensuring that all audio check that the available space is enough if(*frame_size_ptr < AVCODEC_MAX_AUDIO_FRAME_SIZE){ av_log(avctx, AV_LOG_ERROR, "buffer smaller than AVCODEC_MAX_AUDIO_FRAME_SIZE\n"); return -1; } if(*frame_size_ptr < FF_MIN_BUFFER_SIZE || *frame_size_ptr < avctx->channels * avctx->frame_size * sizeof(int16_t)){ av_log(avctx, AV_LOG_ERROR, "buffer %d too small\n", *frame_size_ptr); return -1; } ret = avctx->codec->decode(avctx, samples, frame_size_ptr, avpkt); avctx->frame_number++; }else{ ret= 0; *frame_size_ptr=0; } return ret; } #if LIBAVCODEC_VERSION_MAJOR < 53 int avcodec_decode_subtitle(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, const uint8_t *buf, int buf_size) { AVPacket avpkt; av_init_packet(&avpkt); avpkt.data = buf; avpkt.size = buf_size; return avcodec_decode_subtitle2(avctx, sub, got_sub_ptr, &avpkt); } #endif int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt) { int ret; *got_sub_ptr = 0; ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt); if (*got_sub_ptr) avctx->frame_number++; return ret; } int avcodec_close(AVCodecContext *avctx) { /* If there is a user-supplied mutex locking routine, call it. */ if (ff_lockmgr_cb) { if ((*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) return -1; } entangled_thread_counter++; if(entangled_thread_counter != 1){ av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n"); entangled_thread_counter--; return -1; } if (HAVE_THREADS && avctx->thread_opaque) avcodec_thread_free(avctx); if (avctx->codec && avctx->codec->close) avctx->codec->close(avctx); avcodec_default_free_buffers(avctx); av_freep(&avctx->priv_data); avctx->codec = NULL; entangled_thread_counter--; /* Release any user-supplied mutex. */ if (ff_lockmgr_cb) { (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); } return 0; } AVCodec *avcodec_find_encoder(enum CodecID id) { AVCodec *p; p = first_avcodec; while (p) { if (p->encode != NULL && p->id == id) return p; p = p->next; } return NULL; } AVCodec *avcodec_find_encoder_by_name(const char *name) { AVCodec *p; if (!name) return NULL; p = first_avcodec; while (p) { if (p->encode != NULL && strcmp(name,p->name) == 0) return p; p = p->next; } return NULL; } AVCodec *avcodec_find_decoder(enum CodecID id) { AVCodec *p; p = first_avcodec; while (p) { if (p->decode != NULL && p->id == id) return p; p = p->next; } return NULL; } AVCodec *avcodec_find_decoder_by_name(const char *name) { AVCodec *p; if (!name) return NULL; p = first_avcodec; while (p) { if (p->decode != NULL && strcmp(name,p->name) == 0) return p; p = p->next; } return NULL; } int av_get_bit_rate(AVCodecContext *ctx) { int bit_rate; int bits_per_sample; switch(ctx->codec_type) { case CODEC_TYPE_VIDEO: bit_rate = ctx->bit_rate; break; case CODEC_TYPE_AUDIO: bits_per_sample = av_get_bits_per_sample(ctx->codec_id); bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate; break; case CODEC_TYPE_DATA: bit_rate = ctx->bit_rate; break; case CODEC_TYPE_SUBTITLE: bit_rate = ctx->bit_rate; break; case CODEC_TYPE_ATTACHMENT: bit_rate = ctx->bit_rate; break; default: bit_rate = 0; break; } return bit_rate; } void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode) { const char *codec_name; AVCodec *p; char buf1[32]; int bitrate; AVRational display_aspect_ratio; if (encode) p = avcodec_find_encoder(enc->codec_id); else p = avcodec_find_decoder(enc->codec_id); if (p) { codec_name = p->name; } else if (enc->codec_id == CODEC_ID_MPEG2TS) { /* fake mpeg2 transport stream codec (currently not registered) */ codec_name = "mpeg2ts"; } else if (enc->codec_name[0] != '\0') { codec_name = enc->codec_name; } else { /* output avi tags */ if( isprint(enc->codec_tag&0xFF) && isprint((enc->codec_tag>>8)&0xFF) && isprint((enc->codec_tag>>16)&0xFF) && isprint((enc->codec_tag>>24)&0xFF)){ snprintf(buf1, sizeof(buf1), "%c%c%c%c / 0x%04X", enc->codec_tag & 0xff, (enc->codec_tag >> 8) & 0xff, (enc->codec_tag >> 16) & 0xff, (enc->codec_tag >> 24) & 0xff, enc->codec_tag); } else { snprintf(buf1, sizeof(buf1), "0x%04x", enc->codec_tag); } codec_name = buf1; } switch(enc->codec_type) { case CODEC_TYPE_VIDEO: snprintf(buf, buf_size, "Video: %s%s", codec_name, enc->mb_decision ? " (hq)" : ""); if (enc->pix_fmt != PIX_FMT_NONE) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s", avcodec_get_pix_fmt_name(enc->pix_fmt)); } if (enc->width) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %dx%d", enc->width, enc->height); if (enc->sample_aspect_ratio.num) { av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den, enc->width*enc->sample_aspect_ratio.num, enc->height*enc->sample_aspect_ratio.den, 1024*1024); snprintf(buf + strlen(buf), buf_size - strlen(buf), " [PAR %d:%d DAR %d:%d]", enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den, display_aspect_ratio.num, display_aspect_ratio.den); } if(av_log_get_level() >= AV_LOG_DEBUG){ int g= av_gcd(enc->time_base.num, enc->time_base.den); snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %d/%d", enc->time_base.num/g, enc->time_base.den/g); } } if (encode) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", q=%d-%d", enc->qmin, enc->qmax); } break; case CODEC_TYPE_AUDIO: snprintf(buf, buf_size, "Audio: %s", codec_name); if (enc->sample_rate) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %d Hz", enc->sample_rate); } av_strlcat(buf, ", ", buf_size); avcodec_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout); if (enc->sample_fmt != SAMPLE_FMT_NONE) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s", avcodec_get_sample_fmt_name(enc->sample_fmt)); } break; case CODEC_TYPE_DATA: snprintf(buf, buf_size, "Data: %s", codec_name); break; case CODEC_TYPE_SUBTITLE: snprintf(buf, buf_size, "Subtitle: %s", codec_name); break; case CODEC_TYPE_ATTACHMENT: snprintf(buf, buf_size, "Attachment: %s", codec_name); break; default: snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type); return; } if (encode) { if (enc->flags & CODEC_FLAG_PASS1) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", pass 1"); if (enc->flags & CODEC_FLAG_PASS2) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", pass 2"); } bitrate = av_get_bit_rate(enc); if (bitrate != 0) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %d kb/s", bitrate / 1000); } } unsigned avcodec_version( void ) { return LIBAVCODEC_VERSION_INT; } const char *avcodec_configuration(void) { return FFMPEG_CONFIGURATION; } const char *avcodec_license(void) { #define LICENSE_PREFIX "libavcodec license: " return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1; } void avcodec_init(void) { static int initialized = 0; if (initialized != 0) return; initialized = 1; dsputil_static_init(); } void avcodec_flush_buffers(AVCodecContext *avctx) { if(avctx->codec->flush) avctx->codec->flush(avctx); } void avcodec_default_free_buffers(AVCodecContext *s){ int i, j; if(s->internal_buffer==NULL) return; if (s->internal_buffer_count) av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", s->internal_buffer_count); for(i=0; i<INTERNAL_BUFFER_SIZE; i++){ InternalBuffer *buf= &((InternalBuffer*)s->internal_buffer)[i]; for(j=0; j<4; j++){ av_freep(&buf->base[j]); buf->data[j]= NULL; } } av_freep(&s->internal_buffer); s->internal_buffer_count=0; } char av_get_pict_type_char(int pict_type){ switch(pict_type){ case FF_I_TYPE: return 'I'; case FF_P_TYPE: return 'P'; case FF_B_TYPE: return 'B'; case FF_S_TYPE: return 'S'; case FF_SI_TYPE:return 'i'; case FF_SP_TYPE:return 'p'; case FF_BI_TYPE:return 'b'; default: return '?'; } } int av_get_bits_per_sample(enum CodecID codec_id){ switch(codec_id){ case CODEC_ID_ADPCM_SBPRO_2: return 2; case CODEC_ID_ADPCM_SBPRO_3: return 3; case CODEC_ID_ADPCM_SBPRO_4: case CODEC_ID_ADPCM_CT: case CODEC_ID_ADPCM_WAV: case CODEC_ID_ADPCM_MS: case CODEC_ID_ADPCM_YAMAHA: return 4; case CODEC_ID_PCM_ALAW: case CODEC_ID_PCM_MULAW: case CODEC_ID_PCM_S8: case CODEC_ID_PCM_U8: case CODEC_ID_PCM_ZORK: return 8; case CODEC_ID_PCM_S16BE: case CODEC_ID_PCM_S16LE: case CODEC_ID_PCM_S16LE_PLANAR: case CODEC_ID_PCM_U16BE: case CODEC_ID_PCM_U16LE: return 16; case CODEC_ID_PCM_S24DAUD: case CODEC_ID_PCM_S24BE: case CODEC_ID_PCM_S24LE: case CODEC_ID_PCM_U24BE: case CODEC_ID_PCM_U24LE: return 24; case CODEC_ID_PCM_S32BE: case CODEC_ID_PCM_S32LE: case CODEC_ID_PCM_U32BE: case CODEC_ID_PCM_U32LE: case CODEC_ID_PCM_F32BE: case CODEC_ID_PCM_F32LE: return 32; case CODEC_ID_PCM_F64BE: case CODEC_ID_PCM_F64LE: return 64; default: return 0; } } int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) { switch (sample_fmt) { case SAMPLE_FMT_U8: return 8; case SAMPLE_FMT_S16: return 16; case SAMPLE_FMT_S32: case SAMPLE_FMT_FLT: return 32; case SAMPLE_FMT_DBL: return 64; default: return 0; } } #if !HAVE_THREADS int avcodec_thread_init(AVCodecContext *s, int thread_count){ s->thread_count = thread_count; return -1; } #endif unsigned int av_xiphlacing(unsigned char *s, unsigned int v) { unsigned int n = 0; while(v >= 0xff) { *s++ = 0xff; v -= 0xff; n++; } *s = v; n++; return n; } /* Wrapper to work around the lack of mkstemp() on mingw/cygin. * Also, tries to create file in /tmp first, if possible. * *prefix can be a character constant; *filename will be allocated internally. * Returns file descriptor of opened file (or -1 on error) * and opened file name in **filename. */ int av_tempfile(char *prefix, char **filename) { int fd=-1; #if !HAVE_MKSTEMP *filename = tempnam(".", prefix); #else size_t len = strlen(prefix) + 12; /* room for "/tmp/" and "XXXXXX\0" */ *filename = av_malloc(len); #endif /* -----common section-----*/ if (*filename == NULL) { av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot allocate file name\n"); return -1; } #if !HAVE_MKSTEMP fd = open(*filename, O_RDWR | O_BINARY | O_CREAT, 0444); #else snprintf(*filename, len, "/tmp/%sXXXXXX", prefix); fd = mkstemp(*filename); if (fd < 0) { snprintf(*filename, len, "./%sXXXXXX", prefix); fd = mkstemp(*filename); } #endif /* -----common section-----*/ if (fd < 0) { av_log(NULL, AV_LOG_ERROR, "ff_tempfile: Cannot open temporary file %s\n", *filename); return -1; } return fd; /* success */ } typedef struct { const char *abbr; int width, height; } VideoFrameSizeAbbr; typedef struct { const char *abbr; int rate_num, rate_den; } VideoFrameRateAbbr; static const VideoFrameSizeAbbr video_frame_size_abbrs[] = { { "ntsc", 720, 480 }, { "pal", 720, 576 }, { "qntsc", 352, 240 }, /* VCD compliant NTSC */ { "qpal", 352, 288 }, /* VCD compliant PAL */ { "sntsc", 640, 480 }, /* square pixel NTSC */ { "spal", 768, 576 }, /* square pixel PAL */ { "film", 352, 240 }, { "ntsc-film", 352, 240 }, { "sqcif", 128, 96 }, { "qcif", 176, 144 }, { "cif", 352, 288 }, { "4cif", 704, 576 }, { "16cif", 1408,1152 }, { "qqvga", 160, 120 }, { "qvga", 320, 240 }, { "vga", 640, 480 }, { "svga", 800, 600 }, { "xga", 1024, 768 }, { "uxga", 1600,1200 }, { "qxga", 2048,1536 }, { "sxga", 1280,1024 }, { "qsxga", 2560,2048 }, { "hsxga", 5120,4096 }, { "wvga", 852, 480 }, { "wxga", 1366, 768 }, { "wsxga", 1600,1024 }, { "wuxga", 1920,1200 }, { "woxga", 2560,1600 }, { "wqsxga", 3200,2048 }, { "wquxga", 3840,2400 }, { "whsxga", 6400,4096 }, { "whuxga", 7680,4800 }, { "cga", 320, 200 }, { "ega", 640, 350 }, { "hd480", 852, 480 }, { "hd720", 1280, 720 }, { "hd1080", 1920,1080 }, }; static const VideoFrameRateAbbr video_frame_rate_abbrs[]= { { "ntsc", 30000, 1001 }, { "pal", 25, 1 }, { "qntsc", 30000, 1001 }, /* VCD compliant NTSC */ { "qpal", 25, 1 }, /* VCD compliant PAL */ { "sntsc", 30000, 1001 }, /* square pixel NTSC */ { "spal", 25, 1 }, /* square pixel PAL */ { "film", 24, 1 }, { "ntsc-film", 24000, 1001 }, }; int av_parse_video_frame_size(int *width_ptr, int *height_ptr, const char *str) { int i; int n = FF_ARRAY_ELEMS(video_frame_size_abbrs); char *p; int frame_width = 0, frame_height = 0; for(i=0;i<n;i++) { if (!strcmp(video_frame_size_abbrs[i].abbr, str)) { frame_width = video_frame_size_abbrs[i].width; frame_height = video_frame_size_abbrs[i].height; break; } } if (i == n) { p = str; frame_width = strtol(p, &p, 10); if (*p) p++; frame_height = strtol(p, &p, 10); } if (frame_width <= 0 || frame_height <= 0) return -1; *width_ptr = frame_width; *height_ptr = frame_height; return 0; } int av_parse_video_frame_rate(AVRational *frame_rate, const char *arg) { int i; int n = FF_ARRAY_ELEMS(video_frame_rate_abbrs); char* cp; /* First, we check our abbreviation table */ for (i = 0; i < n; ++i) if (!strcmp(video_frame_rate_abbrs[i].abbr, arg)) { frame_rate->num = video_frame_rate_abbrs[i].rate_num; frame_rate->den = video_frame_rate_abbrs[i].rate_den; return 0; } /* Then, we try to parse it as fraction */ cp = strchr(arg, '/'); if (!cp) cp = strchr(arg, ':'); if (cp) { char* cpp; frame_rate->num = strtol(arg, &cpp, 10); if (cpp != arg || cpp == cp) frame_rate->den = strtol(cp+1, &cpp, 10); else frame_rate->num = 0; } else { /* Finally we give up and parse it as double */ AVRational time_base = av_d2q(strtod(arg, 0), 1001000); frame_rate->den = time_base.den; frame_rate->num = time_base.num; } if (!frame_rate->num || !frame_rate->den) return -1; else return 0; } void av_log_missing_feature(void *avc, const char *feature, int want_sample) { av_log(avc, AV_LOG_WARNING, "%s not implemented. Update your FFmpeg " "version to the newest one from SVN. If the problem still " "occurs, it means that your file has a feature which has not " "been implemented.", feature); if(want_sample) av_log_ask_for_sample(avc, NULL); else av_log(avc, AV_LOG_WARNING, "\n"); } void av_log_ask_for_sample(void *avc, const char *msg) { if (msg) av_log(avc, AV_LOG_WARNING, "%s ", msg); av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample " "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ " "and contact the ffmpeg-devel mailing list.\n"); } static AVHWAccel *first_hwaccel = NULL; void av_register_hwaccel(AVHWAccel *hwaccel) { AVHWAccel **p = &first_hwaccel; while (*p) p = &(*p)->next; *p = hwaccel; hwaccel->next = NULL; } AVHWAccel *av_hwaccel_next(AVHWAccel *hwaccel) { return hwaccel ? hwaccel->next : first_hwaccel; } AVHWAccel *ff_find_hwaccel(enum CodecID codec_id, enum PixelFormat pix_fmt) { AVHWAccel *hwaccel=NULL; while((hwaccel= av_hwaccel_next(hwaccel))){ if ( hwaccel->id == codec_id && hwaccel->pix_fmt == pix_fmt) return hwaccel; } return NULL; } int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)) { if (ff_lockmgr_cb) { if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY)) return -1; } ff_lockmgr_cb = cb; if (ff_lockmgr_cb) { if (ff_lockmgr_cb(&codec_mutex, AV_LOCK_CREATE)) return -1; } return 0; }