/* * utils for libavcodec * Copyright (c) 2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer * * 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 * utils. */ #include "libavutil/avassert.h" #include "libavutil/avstring.h" #include "libavutil/crc.h" #include "libavutil/mathematics.h" #include "libavutil/pixdesc.h" #include "libavutil/audioconvert.h" #include "libavutil/imgutils.h" #include "libavutil/samplefmt.h" #include "libavutil/dict.h" #include "libavutil/avassert.h" #include "avcodec.h" #include "dsputil.h" #include "libavutil/opt.h" #include "imgconvert.h" #include "thread.h" #include "audioconvert.h" #include "internal.h" #include "bytestream.h" #include #include #include #include static int volatile entangled_thread_counter=0; static int (*ff_lockmgr_cb)(void **mutex, enum AVLockOp op); static void *codec_mutex; static void *avformat_mutex; void *av_fast_realloc(void *ptr, unsigned int *size, size_t min_size) { if(min_size < *size) return ptr; min_size= FFMAX(17*min_size/16 + 32, min_size); ptr= av_realloc(ptr, min_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 min_size= 0; *size= min_size; return ptr; } static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc) { void **p = ptr; if (min_size < *size) return 0; min_size= FFMAX(17*min_size/16 + 32, min_size); av_free(*p); *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size); if (!*p) min_size = 0; *size= min_size; return 1; } void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size) { ff_fast_malloc(ptr, size, min_size, 0); } void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size) { uint8_t **p = ptr; if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) { av_freep(p); *size = 0; return; } if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1)) memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE); } /* encoder management */ static AVCodec *first_avcodec = NULL; AVCodec *av_codec_next(AVCodec *c){ if(c) return c->next; else return first_avcodec; } static void avcodec_init(void) { static int initialized = 0; if (initialized != 0) return; initialized = 1; ff_dsputil_static_init(); } int av_codec_is_encoder(AVCodec *codec) { return codec && (codec->encode || codec->encode2); } int av_codec_is_decoder(AVCodec *codec) { return codec && codec->decode; } void avcodec_register(AVCodec *codec) { AVCodec **p; avcodec_init(); p = &first_avcodec; while (*p != NULL) p = &(*p)->next; *p = codec; codec->next = NULL; if (codec->init_static_data) codec->init_static_data(codec); } unsigned avcodec_get_edge_width(void) { return EDGE_WIDTH; } 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); } #define INTERNAL_BUFFER_SIZE (32+1) void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS]) { int i; 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_GBRP: 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: case PIX_FMT_YUVA444P: case PIX_FMT_YUV420P9LE: case PIX_FMT_YUV420P9BE: case PIX_FMT_YUV420P10LE: case PIX_FMT_YUV420P10BE: case PIX_FMT_YUV422P9LE: case PIX_FMT_YUV422P9BE: case PIX_FMT_YUV422P10LE: case PIX_FMT_YUV422P10BE: case PIX_FMT_YUV444P9LE: case PIX_FMT_YUV444P9BE: case PIX_FMT_YUV444P10LE: case PIX_FMT_YUV444P10BE: case PIX_FMT_GBRP9LE: case PIX_FMT_GBRP9BE: case PIX_FMT_GBRP10LE: case PIX_FMT_GBRP10BE: w_align = 16; //FIXME assume 16 pixel per macroblock h_align = 16 * 2; // interlaced needs 2 macroblocks height 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; } if(s->codec_id == CODEC_ID_IFF_ILBM || s->codec_id == CODEC_ID_IFF_BYTERUN1){ w_align= FFMAX(w_align, 8); } *width = FFALIGN(*width , w_align); *height= FFALIGN(*height, h_align); if(s->codec_id == CODEC_ID_H264 || s->lowres) *height+=2; // some of the optimized chroma MC reads one line too much // which is also done in mpeg decoders with lowres > 0 for (i = 0; i < 4; i++) linesize_align[i] = STRIDE_ALIGN; } void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height){ int chroma_shift = av_pix_fmt_descriptors[s->pix_fmt].log2_chroma_w; int linesize_align[AV_NUM_DATA_POINTERS]; int align; avcodec_align_dimensions2(s, width, height, linesize_align); align = FFMAX(linesize_align[0], linesize_align[3]); linesize_align[1] <<= chroma_shift; linesize_align[2] <<= chroma_shift; align = FFMAX3(align, linesize_align[1], linesize_align[2]); *width=FFALIGN(*width, align); } void ff_init_buffer_info(AVCodecContext *s, AVFrame *pic) { if (s->pkt) { pic->pkt_pts = s->pkt->pts; pic->pkt_pos = s->pkt->pos; } else { pic->pkt_pts = AV_NOPTS_VALUE; pic->pkt_pos = -1; } pic->reordered_opaque= s->reordered_opaque; pic->sample_aspect_ratio = s->sample_aspect_ratio; pic->width = s->width; pic->height = s->height; pic->format = s->pix_fmt; } int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, int buf_size, int align) { int ch, planar, needed_size, ret = 0; needed_size = av_samples_get_buffer_size(NULL, nb_channels, frame->nb_samples, sample_fmt, align); if (buf_size < needed_size) return AVERROR(EINVAL); planar = av_sample_fmt_is_planar(sample_fmt); if (planar && nb_channels > AV_NUM_DATA_POINTERS) { if (!(frame->extended_data = av_mallocz(nb_channels * sizeof(*frame->extended_data)))) return AVERROR(ENOMEM); } else { frame->extended_data = frame->data; } if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0], (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples, sample_fmt, align)) < 0) { if (frame->extended_data != frame->data) av_freep(&frame->extended_data); return ret; } if (frame->extended_data != frame->data) { for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++) frame->data[ch] = frame->extended_data[ch]; } return ret; } static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame) { AVCodecInternal *avci = avctx->internal; InternalBuffer *buf; int buf_size, ret; buf_size = av_samples_get_buffer_size(NULL, avctx->channels, frame->nb_samples, avctx->sample_fmt, 32); if (buf_size < 0) return AVERROR(EINVAL); /* allocate InternalBuffer if needed */ if (!avci->buffer) { avci->buffer = av_mallocz(sizeof(InternalBuffer)); if (!avci->buffer) return AVERROR(ENOMEM); } buf = avci->buffer; /* if there is a previously-used internal buffer, check its size and channel count to see if we can reuse it */ if (buf->extended_data) { /* if current buffer is too small, free it */ if (buf->extended_data[0] && buf_size > buf->audio_data_size) { av_free(buf->extended_data[0]); if (buf->extended_data != buf->data) av_freep(&buf->extended_data); buf->extended_data = NULL; buf->data[0] = NULL; } /* if number of channels has changed, reset and/or free extended data pointers but leave data buffer in buf->data[0] for reuse */ if (buf->nb_channels != avctx->channels) { if (buf->extended_data != buf->data) av_free(buf->extended_data); buf->extended_data = NULL; } } /* if there is no previous buffer or the previous buffer cannot be used as-is, allocate a new buffer and/or rearrange the channel pointers */ if (!buf->extended_data) { if (!buf->data[0]) { if (!(buf->data[0] = av_mallocz(buf_size))) return AVERROR(ENOMEM); buf->audio_data_size = buf_size; } if ((ret = avcodec_fill_audio_frame(frame, avctx->channels, avctx->sample_fmt, buf->data[0], buf->audio_data_size, 32))) return ret; if (frame->extended_data == frame->data) buf->extended_data = buf->data; else buf->extended_data = frame->extended_data; memcpy(buf->data, frame->data, sizeof(frame->data)); buf->linesize[0] = frame->linesize[0]; buf->nb_channels = avctx->channels; } else { /* copy InternalBuffer info to the AVFrame */ frame->extended_data = buf->extended_data; frame->linesize[0] = buf->linesize[0]; memcpy(frame->data, buf->data, sizeof(frame->data)); } frame->type = FF_BUFFER_TYPE_INTERNAL; if (avctx->pkt) { frame->pkt_pts = avctx->pkt->pts; frame->pkt_pos = avctx->pkt->pos; } else { frame->pkt_pts = AV_NOPTS_VALUE; frame->pkt_pos = -1; } frame->reordered_opaque = avctx->reordered_opaque; if (avctx->debug & FF_DEBUG_BUFFERS) av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p, " "internal audio buffer used\n", frame); return 0; } static int video_get_buffer(AVCodecContext *s, AVFrame *pic) { int i; int w= s->width; int h= s->height; InternalBuffer *buf; AVCodecInternal *avci = s->internal; if(pic->data[0]!=NULL) { av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n"); return -1; } if(avci->buffer_count >= INTERNAL_BUFFER_SIZE) { av_log(s, AV_LOG_ERROR, "buffer_count overflow (missing release_buffer?)\n"); return -1; } if(av_image_check_size(w, h, 0, s) || s->pix_fmt<0) return -1; if (!avci->buffer) { avci->buffer = av_mallocz((INTERNAL_BUFFER_SIZE+1) * sizeof(InternalBuffer)); } buf = &avci->buffer[avci->buffer_count]; if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){ if(s->active_thread_type&FF_THREAD_FRAME) { av_log_missing_feature(s, "Width/height changing with frame threads is", 0); return -1; } for (i = 0; i < AV_NUM_DATA_POINTERS; i++) { av_freep(&buf->base[i]); buf->data[i]= NULL; } } if (!buf->base[0]) { int h_chroma_shift, v_chroma_shift; int size[4] = {0}; int tmpsize; int unaligned; AVPicture picture; int stride_align[AV_NUM_DATA_POINTERS]; const int pixel_size = av_pix_fmt_descriptors[s->pix_fmt].comp[0].step_minus1+1; avcodec_get_chroma_sub_sample(s->pix_fmt, &h_chroma_shift, &v_chroma_shift); avcodec_align_dimensions2(s, &w, &h, stride_align); 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 av_image_fill_linesizes(picture.linesize, 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++){ unaligned |= picture.linesize[i] % stride_align[i]; } } while (unaligned); tmpsize = av_image_fill_pointers(picture.data, s->pix_fmt, h, NULL, picture.linesize); 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]); 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 EDGE 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) + (pixel_size*EDGE_WIDTH>>h_shift), stride_align[i]); } for (; i < AV_NUM_DATA_POINTERS; i++) { buf->base[i] = buf->data[i] = NULL; buf->linesize[i] = 0; } if(size[1] && !size[2]) ff_set_systematic_pal2((uint32_t*)buf->data[1], s->pix_fmt); buf->width = s->width; buf->height = s->height; buf->pix_fmt= s->pix_fmt; } pic->type= FF_BUFFER_TYPE_INTERNAL; for (i = 0; i < AV_NUM_DATA_POINTERS; i++) { pic->base[i]= buf->base[i]; pic->data[i]= buf->data[i]; pic->linesize[i]= buf->linesize[i]; } pic->extended_data = pic->data; avci->buffer_count++; if (s->pkt) { pic->pkt_pts = s->pkt->pts; pic->pkt_pos = s->pkt->pos; } else { pic->pkt_pts = AV_NOPTS_VALUE; pic->pkt_pos = -1; } pic->reordered_opaque= s->reordered_opaque; pic->sample_aspect_ratio = s->sample_aspect_ratio; pic->width = s->width; pic->height = s->height; pic->format = s->pix_fmt; if(s->debug&FF_DEBUG_BUFFERS) av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p, %d " "buffers used\n", pic, avci->buffer_count); return 0; } int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame) { switch (avctx->codec_type) { case AVMEDIA_TYPE_VIDEO: return video_get_buffer(avctx, frame); case AVMEDIA_TYPE_AUDIO: return audio_get_buffer(avctx, frame); default: return -1; } } void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic){ int i; InternalBuffer *buf, *last; AVCodecInternal *avci = s->internal; assert(s->codec_type == AVMEDIA_TYPE_VIDEO); assert(pic->type==FF_BUFFER_TYPE_INTERNAL); assert(avci->buffer_count); if (avci->buffer) { buf = NULL; /* avoids warning */ for (i = 0; i < avci->buffer_count; i++) { //just 3-5 checks so is not worth to optimize buf = &avci->buffer[i]; if (buf->data[0] == pic->data[0]) break; } assert(i < avci->buffer_count); avci->buffer_count--; last = &avci->buffer[avci->buffer_count]; if (buf != last) FFSWAP(InternalBuffer, *buf, *last); } for (i = 0; i < AV_NUM_DATA_POINTERS; 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, avci->buffer_count); } int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){ AVFrame temp_pic; int i; assert(s->codec_type == AVMEDIA_TYPE_VIDEO); if (pic->data[0] && (pic->width != s->width || pic->height != s->height || pic->format != s->pix_fmt)) { av_log(s, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n", pic->width, pic->height, av_get_pix_fmt_name(pic->format), s->width, s->height, av_get_pix_fmt_name(s->pix_fmt)); s->release_buffer(s, pic); } ff_init_buffer_info(s, pic); /* 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); } assert(s->pix_fmt == pic->format); /* If internal buffer type return the same buffer */ if(pic->type == FF_BUFFER_TYPE_INTERNAL) { return 0; } /* * Not internal type and reget_buffer not overridden, emulate cr buffer */ temp_pic = *pic; for(i = 0; i < AV_NUM_DATA_POINTERS; 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; ipts = pic->pkt_dts = pic->pkt_pts = pic->best_effort_timestamp = AV_NOPTS_VALUE; pic->pkt_pos = -1; pic->key_frame= 1; pic->sample_aspect_ratio = (AVRational){0, 1}; pic->format = -1; /* unknown */ } AVFrame *avcodec_alloc_frame(void){ AVFrame *pic= av_malloc(sizeof(AVFrame)); if(pic==NULL) return NULL; avcodec_get_frame_defaults(pic); return pic; } static void avcodec_get_subtitle_defaults(AVSubtitle *sub) { memset(sub, 0, sizeof(*sub)); sub->pts = AV_NOPTS_VALUE; } static int get_bit_rate(AVCodecContext *ctx) { int bit_rate; int bits_per_sample; switch(ctx->codec_type) { case AVMEDIA_TYPE_VIDEO: case AVMEDIA_TYPE_DATA: case AVMEDIA_TYPE_SUBTITLE: case AVMEDIA_TYPE_ATTACHMENT: bit_rate = ctx->bit_rate; break; case AVMEDIA_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; default: bit_rate = 0; break; } return bit_rate; } #if FF_API_AVCODEC_OPEN int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec) { return avcodec_open2(avctx, codec, NULL); } #endif int attribute_align_arg avcodec_open2(AVCodecContext *avctx, AVCodec *codec, AVDictionary **options) { int ret = 0; AVDictionary *tmp = NULL; if (avcodec_is_open(avctx)) return 0; if ((!codec && !avctx->codec)) { av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n"); return AVERROR(EINVAL); } if ((codec && avctx->codec && codec != avctx->codec)) { av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, " "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name); return AVERROR(EINVAL); } if (!codec) codec = avctx->codec; if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE) return AVERROR(EINVAL); if (options) av_dict_copy(&tmp, *options, 0); /* 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"); ret = -1; goto end; } avctx->internal = av_mallocz(sizeof(AVCodecInternal)); if (!avctx->internal) { ret = AVERROR(ENOMEM); goto end; } if (codec->priv_data_size > 0) { if(!avctx->priv_data){ avctx->priv_data = av_mallocz(codec->priv_data_size); if (!avctx->priv_data) { ret = AVERROR(ENOMEM); goto end; } if (codec->priv_class) { *(const AVClass**)avctx->priv_data= codec->priv_class; av_opt_set_defaults(avctx->priv_data); } } if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0) goto free_and_end; } else { avctx->priv_data = NULL; } if ((ret = av_opt_set_dict(avctx, &tmp)) < 0) goto free_and_end; if (codec->capabilities & CODEC_CAP_EXPERIMENTAL) if (avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { av_log(avctx, AV_LOG_ERROR, "Codec is experimental but experimental codecs are not enabled, see -strict -2\n"); ret = -1; goto free_and_end; } //We only call avcodec_set_dimensions() for non h264 codecs so as not to overwrite previously setup dimensions if(!( avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && avctx->codec_id == CODEC_ID_H264)){ 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); } if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height) && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0 || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) { av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n"); avcodec_set_dimensions(avctx, 0, 0); } /* if the decoder init function was already called previously, free the already allocated subtitle_header before overwriting it */ if (av_codec_is_decoder(codec)) av_freep(&avctx->subtitle_header); #define SANE_NB_CHANNELS 128U if (avctx->channels > SANE_NB_CHANNELS) { ret = AVERROR(EINVAL); goto free_and_end; } avctx->codec = codec; if ((avctx->codec_type == AVMEDIA_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 && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) { av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n"); ret = AVERROR(EINVAL); goto free_and_end; } avctx->frame_number = 0; if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && (!avctx->time_base.num || !avctx->time_base.den)) { avctx->time_base.num = 1; avctx->time_base.den = avctx->sample_rate; } if (!HAVE_THREADS) av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n"); if (HAVE_THREADS && !avctx->thread_opaque) { ret = ff_thread_init(avctx); if (ret < 0) { goto free_and_end; } } if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS)) avctx->thread_count = 1; if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) { av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n", avctx->codec->max_lowres); ret = AVERROR(EINVAL); goto free_and_end; } if (av_codec_is_encoder(avctx->codec)) { int i; if (avctx->codec->sample_fmts) { for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) if (avctx->sample_fmt == avctx->codec->sample_fmts[i]) break; if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) { av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n"); ret = AVERROR(EINVAL); goto free_and_end; } } if (avctx->codec->pix_fmts) { for (i = 0; avctx->codec->pix_fmts[i] != PIX_FMT_NONE; i++) if (avctx->pix_fmt == avctx->codec->pix_fmts[i]) break; if (avctx->codec->pix_fmts[i] == PIX_FMT_NONE) { av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n"); ret = AVERROR(EINVAL); goto free_and_end; } } if (avctx->codec->supported_samplerates) { for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++) if (avctx->sample_rate == avctx->codec->supported_samplerates[i]) break; if (avctx->codec->supported_samplerates[i] == 0) { av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n"); ret = AVERROR(EINVAL); goto free_and_end; } } if (avctx->codec->channel_layouts) { if (!avctx->channel_layout) { av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n"); } else { for (i = 0; avctx->codec->channel_layouts[i] != 0; i++) if (avctx->channel_layout == avctx->codec->channel_layouts[i]) break; if (avctx->codec->channel_layouts[i] == 0) { av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n"); ret = AVERROR(EINVAL); goto free_and_end; } } } if (avctx->channel_layout && avctx->channels) { if (av_get_channel_layout_nb_channels(avctx->channel_layout) != avctx->channels) { av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n"); ret = AVERROR(EINVAL); goto free_and_end; } } else if (avctx->channel_layout) { avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout); } } avctx->pts_correction_num_faulty_pts = avctx->pts_correction_num_faulty_dts = 0; avctx->pts_correction_last_pts = avctx->pts_correction_last_dts = INT64_MIN; if(avctx->codec->init && !(avctx->active_thread_type&FF_THREAD_FRAME)){ ret = avctx->codec->init(avctx); if (ret < 0) { goto free_and_end; } } if (av_codec_is_decoder(avctx->codec) && !avctx->bit_rate) avctx->bit_rate = get_bit_rate(avctx); ret=0; end: entangled_thread_counter--; /* Release any user-supplied mutex. */ if (ff_lockmgr_cb) { (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); } if (options) { av_dict_free(options); *options = tmp; } return ret; free_and_end: av_dict_free(&tmp); av_freep(&avctx->priv_data); av_freep(&avctx->internal); avctx->codec= NULL; goto end; } int ff_alloc_packet(AVPacket *avpkt, int size) { if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE) return AVERROR(EINVAL); if (avpkt->data) { void *destruct = avpkt->destruct; if (avpkt->size < size) return AVERROR(EINVAL); av_init_packet(avpkt); avpkt->destruct = destruct; avpkt->size = size; return 0; } else { return av_new_packet(avpkt, size); } } int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr) { int ret; int user_packet = !!avpkt->data; int nb_samples; *got_packet_ptr = 0; if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) { av_free_packet(avpkt); av_init_packet(avpkt); avpkt->size = 0; return 0; } /* check for valid frame size */ if (frame) { nb_samples = frame->nb_samples; if (avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) { if (nb_samples > avctx->frame_size) return AVERROR(EINVAL); } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) { if (nb_samples != avctx->frame_size) return AVERROR(EINVAL); } } else { nb_samples = avctx->frame_size; } if (avctx->codec->encode2) { ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr); if (!ret && *got_packet_ptr) { if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) { if (avpkt->pts == AV_NOPTS_VALUE) avpkt->pts = frame->pts; if (!avpkt->duration) avpkt->duration = ff_samples_to_time_base(avctx, frame->nb_samples); } avpkt->dts = avpkt->pts; } else { avpkt->size = 0; } } else { /* for compatibility with encoders not supporting encode2(), we need to allocate a packet buffer if the user has not provided one or check the size otherwise */ int fs_tmp = 0; int buf_size = avpkt->size; if (!user_packet) { if (avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE) { av_assert0(av_get_bits_per_sample(avctx->codec_id) != 0); if (!frame) return AVERROR(EINVAL); buf_size = nb_samples * avctx->channels * av_get_bits_per_sample(avctx->codec_id) / 8; } else { /* this is a guess as to the required size. if an encoder needs more than this, it should probably implement encode2() */ buf_size = 2 * avctx->frame_size * avctx->channels * av_get_bytes_per_sample(avctx->sample_fmt); buf_size += 2*FF_MIN_BUFFER_SIZE; } } if ((ret = ff_alloc_packet(avpkt, buf_size))) return ret; /* Encoders using AVCodec.encode() that support CODEC_CAP_SMALL_LAST_FRAME require avctx->frame_size to be set to the smaller size when encoding the last frame. This code can be removed once all encoders supporting CODEC_CAP_SMALL_LAST_FRAME use encode2() */ if ((avctx->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) && nb_samples < avctx->frame_size) { fs_tmp = avctx->frame_size; avctx->frame_size = nb_samples; } /* encode the frame */ ret = avctx->codec->encode(avctx, avpkt->data, avpkt->size, frame ? frame->data[0] : NULL); if (ret >= 0) { if (!ret) { /* no output. if the packet data was allocated by libavcodec, free it */ if (!user_packet) av_freep(&avpkt->data); } else { if (avctx->coded_frame) avpkt->pts = avpkt->dts = avctx->coded_frame->pts; /* Set duration for final small packet. This can be removed once all encoders supporting CODEC_CAP_SMALL_LAST_FRAME use encode2() */ if (fs_tmp) { avpkt->duration = ff_samples_to_time_base(avctx, avctx->frame_size); } } avpkt->size = ret; *got_packet_ptr = (ret > 0); ret = 0; } if (fs_tmp) avctx->frame_size = fs_tmp; } if (!ret) { if (!user_packet && avpkt->data) { uint8_t *new_data = av_realloc(avpkt->data, avpkt->size); if (new_data) avpkt->data = new_data; } avctx->frame_number++; } if (ret < 0 || !*got_packet_ptr) av_free_packet(avpkt); /* NOTE: if we add any audio encoders which output non-keyframe packets, this needs to be moved to the encoders, but for now we can do it here to simplify things */ avpkt->flags |= AV_PKT_FLAG_KEY; return ret; } #if FF_API_OLD_DECODE_AUDIO int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size, const short *samples) { AVPacket pkt; AVFrame frame0; AVFrame *frame; int ret, samples_size, got_packet; av_init_packet(&pkt); pkt.data = buf; pkt.size = buf_size; if (samples) { frame = &frame0; avcodec_get_frame_defaults(frame); if (avctx->frame_size) { frame->nb_samples = avctx->frame_size; } else { /* if frame_size is not set, the number of samples must be calculated from the buffer size */ int64_t nb_samples; if (!av_get_bits_per_sample(avctx->codec_id)) { av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not " "support this codec\n"); return AVERROR(EINVAL); } nb_samples = (int64_t)buf_size * 8 / (av_get_bits_per_sample(avctx->codec_id) * avctx->channels); if (nb_samples >= INT_MAX) return AVERROR(EINVAL); frame->nb_samples = nb_samples; } /* it is assumed that the samples buffer is large enough based on the relevant parameters */ samples_size = av_samples_get_buffer_size(NULL, avctx->channels, frame->nb_samples, avctx->sample_fmt, 1); if ((ret = avcodec_fill_audio_frame(frame, avctx->channels, avctx->sample_fmt, (const uint8_t *)samples, samples_size, 1))) return ret; /* fabricate frame pts from sample count. this is needed because the avcodec_encode_audio() API does not have a way for the user to provide pts */ if(avctx->sample_rate && avctx->time_base.num) frame->pts = ff_samples_to_time_base(avctx, avctx->internal->sample_count); else frame->pts = AV_NOPTS_VALUE; avctx->internal->sample_count += frame->nb_samples; } else { frame = NULL; } got_packet = 0; ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet); if (!ret && got_packet && avctx->coded_frame) { avctx->coded_frame->pts = pkt.pts; avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY); } /* free any side data since we cannot return it */ ff_packet_free_side_data(&pkt); if (frame && frame->extended_data != frame->data) av_freep(&frame->extended_data); return ret ? ret : pkt.size; } #endif #if FF_API_OLD_ENCODE_VIDEO int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVFrame *pict) { AVPacket pkt; int ret, got_packet = 0; if(buf_size < FF_MIN_BUFFER_SIZE){ av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n"); return -1; } av_init_packet(&pkt); pkt.data = buf; pkt.size = buf_size; ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet); if (!ret && got_packet && avctx->coded_frame) { avctx->coded_frame->pts = pkt.pts; avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY); } /* free any side data since we cannot return it */ if (pkt.side_data_elems > 0) { int i; for (i = 0; i < pkt.side_data_elems; i++) av_free(pkt.side_data[i].data); av_freep(&pkt.side_data); pkt.side_data_elems = 0; } return ret ? ret : pkt.size; } #endif int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr) { int ret; int user_packet = !!avpkt->data; *got_packet_ptr = 0; if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) { av_free_packet(avpkt); av_init_packet(avpkt); avpkt->size = 0; return 0; } if (av_image_check_size(avctx->width, avctx->height, 0, avctx)) return AVERROR(EINVAL); av_assert0(avctx->codec->encode2); ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr); if (!ret) { if (!*got_packet_ptr) avpkt->size = 0; else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) avpkt->pts = avpkt->dts = frame->pts; if (!user_packet && avpkt->data && avpkt->destruct == av_destruct_packet) { uint8_t *new_data = av_realloc(avpkt->data, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE); if (new_data) avpkt->data = new_data; } avctx->frame_number++; } if (ret < 0 || !*got_packet_ptr) av_free_packet(avpkt); emms_c(); return ret; } 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; } ret = avctx->codec->encode(avctx, buf, buf_size, (void *)(intptr_t)sub); avctx->frame_number++; return ret; } /** * Attempt to guess proper monotonic timestamps for decoded video frames * which might have incorrect times. Input timestamps may wrap around, in * which case the output will as well. * * @param pts the pts field of the decoded AVPacket, as passed through * AVFrame.pkt_pts * @param dts the dts field of the decoded AVPacket * @return one of the input values, may be AV_NOPTS_VALUE */ static int64_t guess_correct_pts(AVCodecContext *ctx, int64_t reordered_pts, int64_t dts) { int64_t pts = AV_NOPTS_VALUE; if (dts != AV_NOPTS_VALUE) { ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts; ctx->pts_correction_last_dts = dts; } if (reordered_pts != AV_NOPTS_VALUE) { ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts; ctx->pts_correction_last_pts = reordered_pts; } if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE) && reordered_pts != AV_NOPTS_VALUE) pts = reordered_pts; else pts = dts; return pts; } static void apply_param_change(AVCodecContext *avctx, AVPacket *avpkt) { int size = 0; const uint8_t *data; uint32_t flags; if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) return; data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size); if (!data || size < 4) return; flags = bytestream_get_le32(&data); size -= 4; if (size < 4) /* Required for any of the changes */ return; if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) { avctx->channels = bytestream_get_le32(&data); size -= 4; } if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) { if (size < 8) return; avctx->channel_layout = bytestream_get_le64(&data); size -= 8; } if (size < 4) return; if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) { avctx->sample_rate = bytestream_get_le32(&data); size -= 4; } if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) { if (size < 8) return; avctx->width = bytestream_get_le32(&data); avctx->height = bytestream_get_le32(&data); avcodec_set_dimensions(avctx, avctx->width, avctx->height); size -= 8; } } int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const AVPacket *avpkt) { int ret; // copy to ensure we do not change avpkt AVPacket tmp = *avpkt; *got_picture_ptr= 0; if((avctx->coded_width||avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx)) return -1; if((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type&FF_THREAD_FRAME)){ int did_split = av_packet_split_side_data(&tmp); apply_param_change(avctx, &tmp); avctx->pkt = &tmp; if (HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME) ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr, &tmp); else { ret = avctx->codec->decode(avctx, picture, got_picture_ptr, &tmp); picture->pkt_dts= avpkt->dts; if(!avctx->has_b_frames){ picture->pkt_pos= avpkt->pos; } //FIXME these should be under if(!avctx->has_b_frames) if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio; if (!picture->width) picture->width = avctx->width; if (!picture->height) picture->height = avctx->height; if (picture->format == PIX_FMT_NONE) picture->format = avctx->pix_fmt; } emms_c(); //needed to avoid an emms_c() call before every return; avctx->pkt = NULL; if (did_split) ff_packet_free_side_data(&tmp); if (*got_picture_ptr){ avctx->frame_number++; picture->best_effort_timestamp = guess_correct_pts(avctx, picture->pkt_pts, picture->pkt_dts); } }else ret= 0; return ret; } #if FF_API_OLD_DECODE_AUDIO int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples, int *frame_size_ptr, AVPacket *avpkt) { AVFrame frame; int ret, got_frame = 0; if (avctx->get_buffer != avcodec_default_get_buffer) { av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with" "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n"); av_log(avctx, AV_LOG_ERROR, "Please port your application to " "avcodec_decode_audio4()\n"); avctx->get_buffer = avcodec_default_get_buffer; avctx->release_buffer = avcodec_default_release_buffer; } ret = avcodec_decode_audio4(avctx, &frame, &got_frame, avpkt); if (ret >= 0 && got_frame) { int ch, plane_size; int planar = av_sample_fmt_is_planar(avctx->sample_fmt); int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels, frame.nb_samples, avctx->sample_fmt, 1); if (*frame_size_ptr < data_size) { av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for " "the current frame (%d < %d)\n", *frame_size_ptr, data_size); return AVERROR(EINVAL); } memcpy(samples, frame.extended_data[0], plane_size); if (planar && avctx->channels > 1) { uint8_t *out = ((uint8_t *)samples) + plane_size; for (ch = 1; ch < avctx->channels; ch++) { memcpy(out, frame.extended_data[ch], plane_size); out += plane_size; } } *frame_size_ptr = data_size; } else { *frame_size_ptr = 0; } return ret; } #endif int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt) { int ret = 0; *got_frame_ptr = 0; if (!avpkt->data && avpkt->size) { av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n"); return AVERROR(EINVAL); } if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) { av_packet_split_side_data(avpkt); apply_param_change(avctx, avpkt); avctx->pkt = avpkt; ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt); if (ret >= 0 && *got_frame_ptr) { avctx->frame_number++; frame->pkt_dts = avpkt->dts; if (frame->format == AV_SAMPLE_FMT_NONE) frame->format = avctx->sample_fmt; } } return ret; } int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt) { int ret; avctx->pkt = avpkt; *got_sub_ptr = 0; avcodec_get_subtitle_defaults(sub); ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt); if (*got_sub_ptr) avctx->frame_number++; return ret; } void avsubtitle_free(AVSubtitle *sub) { int i; for (i = 0; i < sub->num_rects; i++) { av_freep(&sub->rects[i]->pict.data[0]); av_freep(&sub->rects[i]->pict.data[1]); av_freep(&sub->rects[i]->pict.data[2]); av_freep(&sub->rects[i]->pict.data[3]); av_freep(&sub->rects[i]->text); av_freep(&sub->rects[i]->ass); av_freep(&sub->rects[i]); } av_freep(&sub->rects); memset(sub, 0, sizeof(AVSubtitle)); } av_cold 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 (avcodec_is_open(avctx)) { if (HAVE_THREADS && avctx->thread_opaque) ff_thread_free(avctx); if (avctx->codec && avctx->codec->close) avctx->codec->close(avctx); avcodec_default_free_buffers(avctx); avctx->coded_frame = NULL; av_freep(&avctx->internal); } if (avctx->priv_data && avctx->codec && avctx->codec->priv_class) av_opt_free(avctx->priv_data); av_opt_free(avctx); av_freep(&avctx->priv_data); if (av_codec_is_encoder(avctx->codec)) av_freep(&avctx->extradata); avctx->codec = NULL; avctx->active_thread_type = 0; entangled_thread_counter--; /* Release any user-supplied mutex. */ if (ff_lockmgr_cb) { (*ff_lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); } return 0; } static enum CodecID remap_deprecated_codec_id(enum CodecID id) { switch(id){ //This is for future deprecatec codec ids, its empty since //last major bump but will fill up again over time, please dont remove it // case CODEC_ID_UTVIDEO_DEPRECATED: return CODEC_ID_UTVIDEO; default : return id; } } AVCodec *avcodec_find_encoder(enum CodecID id) { AVCodec *p, *experimental=NULL; p = first_avcodec; id= remap_deprecated_codec_id(id); while (p) { if (av_codec_is_encoder(p) && p->id == id) { if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) { experimental = p; } else return p; } p = p->next; } return experimental; } AVCodec *avcodec_find_encoder_by_name(const char *name) { AVCodec *p; if (!name) return NULL; p = first_avcodec; while (p) { if (av_codec_is_encoder(p) && strcmp(name,p->name) == 0) return p; p = p->next; } return NULL; } AVCodec *avcodec_find_decoder(enum CodecID id) { AVCodec *p, *experimental=NULL; p = first_avcodec; id= remap_deprecated_codec_id(id); while (p) { if (av_codec_is_decoder(p) && p->id == id) { if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) { experimental = p; } else return p; } p = p->next; } return experimental; } AVCodec *avcodec_find_decoder_by_name(const char *name) { AVCodec *p; if (!name) return NULL; p = first_avcodec; while (p) { if (av_codec_is_decoder(p) && strcmp(name,p->name) == 0) return p; p = p->next; } return NULL; } const char *avcodec_get_name(enum CodecID id) { AVCodec *codec; #if !CONFIG_SMALL switch (id) { #include "libavcodec/codec_names.h" } av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id); #endif codec = avcodec_find_decoder(id); if (codec) return codec->name; codec = avcodec_find_encoder(id); if (codec) return codec->name; return "unknown_codec"; } size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag) { int i, len, ret = 0; for (i = 0; i < 4; i++) { len = snprintf(buf, buf_size, isprint(codec_tag&0xFF) ? "%c" : "[%d]", codec_tag&0xFF); buf += len; buf_size = buf_size > len ? buf_size - len : 0; ret += len; codec_tag>>=8; } return ret; } void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode) { const char *codec_type; const char *codec_name; const char *profile = NULL; AVCodec *p; int bitrate; AVRational display_aspect_ratio; if (!buf || buf_size <= 0) return; codec_type = av_get_media_type_string(enc->codec_type); codec_name = avcodec_get_name(enc->codec_id); if (enc->profile != FF_PROFILE_UNKNOWN) { p = encode ? avcodec_find_encoder(enc->codec_id) : avcodec_find_decoder(enc->codec_id); if (p) profile = av_get_profile_name(p, enc->profile); } snprintf(buf, buf_size, "%s: %s%s", codec_type ? codec_type : "unknown", codec_name, enc->mb_decision ? " (hq)" : ""); buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */ if (profile) snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile); if (enc->codec_tag) { char tag_buf[32]; av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag); snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)", tag_buf, enc->codec_tag); } switch(enc->codec_type) { case AVMEDIA_TYPE_VIDEO: if (enc->pix_fmt != PIX_FMT_NONE) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s", av_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), " [SAR %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 AVMEDIA_TYPE_AUDIO: if (enc->sample_rate) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %d Hz", enc->sample_rate); } av_strlcat(buf, ", ", buf_size); av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout); if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s", av_get_sample_fmt_name(enc->sample_fmt)); } break; default: 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 = get_bit_rate(enc); if (bitrate != 0) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %d kb/s", bitrate / 1000); } } const char *av_get_profile_name(const AVCodec *codec, int profile) { const AVProfile *p; if (profile == FF_PROFILE_UNKNOWN || !codec->profiles) return NULL; for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++) if (p->profile == profile) return p->name; return NULL; } unsigned avcodec_version( void ) { // av_assert0(CODEC_ID_V410==164); av_assert0(CODEC_ID_PCM_S8_PLANAR==65563); av_assert0(CODEC_ID_ADPCM_G722==69660); // av_assert0(CODEC_ID_BMV_AUDIO==86071); av_assert0(CODEC_ID_SRT==94216); av_assert0(LIBAVCODEC_VERSION_MICRO >= 100); 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_flush_buffers(AVCodecContext *avctx) { if(HAVE_THREADS && avctx->active_thread_type&FF_THREAD_FRAME) ff_thread_flush(avctx); else if(avctx->codec->flush) avctx->codec->flush(avctx); } static void video_free_buffers(AVCodecContext *s) { AVCodecInternal *avci = s->internal; int i, j; if (!avci->buffer) return; if (avci->buffer_count) av_log(s, AV_LOG_WARNING, "Found %i unreleased buffers!\n", avci->buffer_count); for(i=0; ibuffer[i]; for(j=0; j<4; j++){ av_freep(&buf->base[j]); buf->data[j]= NULL; } } av_freep(&avci->buffer); avci->buffer_count=0; } static void audio_free_buffers(AVCodecContext *avctx) { AVCodecInternal *avci = avctx->internal; InternalBuffer *buf; if (!avci->buffer) return; buf = avci->buffer; if (buf->extended_data) { av_free(buf->extended_data[0]); if (buf->extended_data != buf->data) av_freep(&buf->extended_data); } av_freep(&avci->buffer); } void avcodec_default_free_buffers(AVCodecContext *avctx) { switch (avctx->codec_type) { case AVMEDIA_TYPE_VIDEO: video_free_buffers(avctx); break; case AVMEDIA_TYPE_AUDIO: audio_free_buffers(avctx); break; default: break; } } int av_get_exact_bits_per_sample(enum CodecID codec_id) { switch(codec_id){ case CODEC_ID_ADPCM_CT: case CODEC_ID_ADPCM_IMA_APC: case CODEC_ID_ADPCM_IMA_EA_SEAD: case CODEC_ID_ADPCM_IMA_WS: case CODEC_ID_ADPCM_G722: 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; } } enum CodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be) { static const enum CodecID map[AV_SAMPLE_FMT_NB][2] = { [AV_SAMPLE_FMT_U8 ] = { CODEC_ID_PCM_U8, CODEC_ID_PCM_U8 }, [AV_SAMPLE_FMT_S16 ] = { CODEC_ID_PCM_S16LE, CODEC_ID_PCM_S16BE }, [AV_SAMPLE_FMT_S32 ] = { CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE }, [AV_SAMPLE_FMT_FLT ] = { CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F32BE }, [AV_SAMPLE_FMT_DBL ] = { CODEC_ID_PCM_F64LE, CODEC_ID_PCM_F64BE }, [AV_SAMPLE_FMT_U8P ] = { CODEC_ID_PCM_U8, CODEC_ID_PCM_U8 }, [AV_SAMPLE_FMT_S16P] = { CODEC_ID_PCM_S16LE, CODEC_ID_PCM_S16BE }, [AV_SAMPLE_FMT_S32P] = { CODEC_ID_PCM_S32LE, CODEC_ID_PCM_S32BE }, [AV_SAMPLE_FMT_FLTP] = { CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F32BE }, [AV_SAMPLE_FMT_DBLP] = { CODEC_ID_PCM_F64LE, CODEC_ID_PCM_F64BE }, }; if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB) return CODEC_ID_NONE; if (be < 0 || be > 1) be = AV_NE(1, 0); return map[fmt][be]; } 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_IMA_WAV: case CODEC_ID_ADPCM_IMA_QT: case CODEC_ID_ADPCM_SWF: case CODEC_ID_ADPCM_MS: return 4; default: return av_get_exact_bits_per_sample(codec_id); } } int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes) { int id, sr, ch, ba, tag, bps; id = avctx->codec_id; sr = avctx->sample_rate; ch = avctx->channels; ba = avctx->block_align; tag = avctx->codec_tag; bps = av_get_exact_bits_per_sample(avctx->codec_id); /* codecs with an exact constant bits per sample */ if (bps > 0 && ch > 0 && frame_bytes > 0) return (frame_bytes * 8) / (bps * ch); bps = avctx->bits_per_coded_sample; /* codecs with a fixed packet duration */ switch (id) { case CODEC_ID_ADPCM_ADX: return 32; case CODEC_ID_ADPCM_IMA_QT: return 64; case CODEC_ID_ADPCM_EA_XAS: return 128; case CODEC_ID_AMR_NB: case CODEC_ID_GSM: case CODEC_ID_QCELP: case CODEC_ID_RA_144: case CODEC_ID_RA_288: return 160; case CODEC_ID_IMC: return 256; case CODEC_ID_AMR_WB: case CODEC_ID_GSM_MS: return 320; case CODEC_ID_MP1: return 384; case CODEC_ID_ATRAC1: return 512; case CODEC_ID_ATRAC3: return 1024; case CODEC_ID_MP2: case CODEC_ID_MUSEPACK7: return 1152; case CODEC_ID_AC3: return 1536; } if (sr > 0) { /* calc from sample rate */ if (id == CODEC_ID_TTA) return 256 * sr / 245; if (ch > 0) { /* calc from sample rate and channels */ if (id == CODEC_ID_BINKAUDIO_DCT) return (480 << (sr / 22050)) / ch; } } if (ba > 0) { /* calc from block_align */ if (id == CODEC_ID_SIPR) { switch (ba) { case 20: return 160; case 19: return 144; case 29: return 288; case 37: return 480; } } } if (frame_bytes > 0) { /* calc from frame_bytes only */ if (id == CODEC_ID_TRUESPEECH) return 240 * (frame_bytes / 32); if (id == CODEC_ID_NELLYMOSER) return 256 * (frame_bytes / 64); if (bps > 0) { /* calc from frame_bytes and bits_per_coded_sample */ if (id == CODEC_ID_ADPCM_G726) return frame_bytes * 8 / bps; } if (ch > 0) { /* calc from frame_bytes and channels */ switch (id) { case CODEC_ID_ADPCM_4XM: case CODEC_ID_ADPCM_IMA_ISS: return (frame_bytes - 4 * ch) * 2 / ch; case CODEC_ID_ADPCM_IMA_SMJPEG: return (frame_bytes - 4) * 2 / ch; case CODEC_ID_ADPCM_IMA_AMV: return (frame_bytes - 8) * 2 / ch; case CODEC_ID_ADPCM_XA: return (frame_bytes / 128) * 224 / ch; case CODEC_ID_INTERPLAY_DPCM: return (frame_bytes - 6 - ch) / ch; case CODEC_ID_ROQ_DPCM: return (frame_bytes - 8) / ch; case CODEC_ID_XAN_DPCM: return (frame_bytes - 2 * ch) / ch; case CODEC_ID_MACE3: return 3 * frame_bytes / ch; case CODEC_ID_MACE6: return 6 * frame_bytes / ch; case CODEC_ID_PCM_LXF: return 2 * (frame_bytes / (5 * ch)); } if (tag) { /* calc from frame_bytes, channels, and codec_tag */ if (id == CODEC_ID_SOL_DPCM) { if (tag == 3) return frame_bytes / ch; else return frame_bytes * 2 / ch; } } if (ba > 0) { /* calc from frame_bytes, channels, and block_align */ int blocks = frame_bytes / ba; switch (avctx->codec_id) { case CODEC_ID_ADPCM_IMA_WAV: return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8); case CODEC_ID_ADPCM_IMA_DK3: return blocks * (((ba - 16) * 2 / 3 * 4) / ch); case CODEC_ID_ADPCM_IMA_DK4: return blocks * (1 + (ba - 4 * ch) * 2 / ch); case CODEC_ID_ADPCM_MS: return blocks * (2 + (ba - 7 * ch) * 2 / ch); } } if (bps > 0) { /* calc from frame_bytes, channels, and bits_per_coded_sample */ switch (avctx->codec_id) { case CODEC_ID_PCM_DVD: return 2 * (frame_bytes / ((bps * 2 / 8) * ch)); case CODEC_ID_PCM_BLURAY: return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8); case CODEC_ID_S302M: return 2 * (frame_bytes / ((bps + 4) / 4)) / ch; } } } } return 0; } #if !HAVE_THREADS int ff_thread_init(AVCodecContext *s){ 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; } int ff_match_2uint16(const uint16_t (*tab)[2], int size, int a, int b){ int i; for(i=0; inext; *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; if (ff_lockmgr_cb(&avformat_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; if (ff_lockmgr_cb(&avformat_mutex, AV_LOCK_CREATE)) return -1; } return 0; } int avpriv_lock_avformat(void) { if (ff_lockmgr_cb) { if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN)) return -1; } return 0; } int avpriv_unlock_avformat(void) { if (ff_lockmgr_cb) { if ((*ff_lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE)) return -1; } return 0; } unsigned int avpriv_toupper4(unsigned int x) { return toupper( x &0xFF) + (toupper((x>>8 )&0xFF)<<8 ) + (toupper((x>>16)&0xFF)<<16) + (toupper((x>>24)&0xFF)<<24); } #if !HAVE_THREADS int ff_thread_get_buffer(AVCodecContext *avctx, AVFrame *f) { f->owner = avctx; ff_init_buffer_info(avctx, f); return avctx->get_buffer(avctx, f); } void ff_thread_release_buffer(AVCodecContext *avctx, AVFrame *f) { f->owner->release_buffer(f->owner, f); } void ff_thread_finish_setup(AVCodecContext *avctx) { } void ff_thread_report_progress(AVFrame *f, int progress, int field) { } void ff_thread_await_progress(AVFrame *f, int progress, int field) { } #endif enum AVMediaType avcodec_get_type(enum CodecID codec_id) { AVCodec *c= avcodec_find_decoder(codec_id); if(!c) c= avcodec_find_encoder(codec_id); if(c) return c->type; if (codec_id <= CODEC_ID_NONE) return AVMEDIA_TYPE_UNKNOWN; else if (codec_id < CODEC_ID_FIRST_AUDIO) return AVMEDIA_TYPE_VIDEO; else if (codec_id < CODEC_ID_FIRST_SUBTITLE) return AVMEDIA_TYPE_AUDIO; else if (codec_id < CODEC_ID_FIRST_UNKNOWN) return AVMEDIA_TYPE_SUBTITLE; return AVMEDIA_TYPE_UNKNOWN; } int avcodec_is_open(AVCodecContext *s) { return !!s->internal; }