/* * utils for libavcodec * Copyright (c) 2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer * * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * utils. */ #include "config.h" #include "libavutil/attributes.h" #include "libavutil/avassert.h" #include "libavutil/avstring.h" #include "libavutil/channel_layout.h" #include "libavutil/crc.h" #include "libavutil/frame.h" #include "libavutil/hwcontext.h" #include "libavutil/internal.h" #include "libavutil/mathematics.h" #include "libavutil/pixdesc.h" #include "libavutil/imgutils.h" #include "libavutil/samplefmt.h" #include "libavutil/dict.h" #include "avcodec.h" #include "decode.h" #include "libavutil/opt.h" #include "me_cmp.h" #include "mpegvideo.h" #include "thread.h" #include "internal.h" #include "bytestream.h" #include "version.h" #include #include #include #include static int volatile entangled_thread_counter = 0; static int (*lockmgr_cb)(void **mutex, enum AVLockOp op); static void *codec_mutex; static void *avformat_mutex; void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size) { void **p = ptr; if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) { av_freep(p); *size = 0; return; } av_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE); if (*size) memset((uint8_t *)*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE); } /* encoder management */ static AVCodec *first_avcodec = NULL; AVCodec *av_codec_next(const AVCodec *c) { if (c) return c->next; else return first_avcodec; } static av_cold void avcodec_init(void) { static int initialized = 0; if (initialized != 0) return; initialized = 1; if (CONFIG_ME_CMP) ff_me_cmp_init_static(); } int av_codec_is_encoder(const AVCodec *codec) { return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame); } int av_codec_is_decoder(const AVCodec *codec) { return codec && (codec->decode || codec->receive_frame); } av_cold void avcodec_register(AVCodec *codec) { AVCodec **p; avcodec_init(); p = &first_avcodec; while (*p) p = &(*p)->next; *p = codec; codec->next = NULL; if (codec->init_static_data) codec->init_static_data(codec); } int ff_set_dimensions(AVCodecContext *s, int width, int height) { int ret = av_image_check_size(width, height, 0, s); if (ret < 0) width = height = 0; s->width = s->coded_width = width; s->height = s->coded_height = height; return ret; } int ff_set_sar(AVCodecContext *avctx, AVRational sar) { int ret = av_image_check_sar(avctx->width, avctx->height, sar); if (ret < 0) { av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n", sar.num, sar.den); avctx->sample_aspect_ratio = (AVRational){ 0, 1 }; return ret; } else { avctx->sample_aspect_ratio = sar; } return 0; } int ff_side_data_update_matrix_encoding(AVFrame *frame, enum AVMatrixEncoding matrix_encoding) { AVFrameSideData *side_data; enum AVMatrixEncoding *data; side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING); if (!side_data) side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING, sizeof(enum AVMatrixEncoding)); if (!side_data) return AVERROR(ENOMEM); data = (enum AVMatrixEncoding*)side_data->data; *data = matrix_encoding; return 0; } void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS]) { size_t max_align = av_cpu_max_align(); int i; int w_align = 1; int h_align = 1; switch (s->pix_fmt) { case AV_PIX_FMT_YUV420P: case AV_PIX_FMT_YUYV422: case AV_PIX_FMT_YVYU422: case AV_PIX_FMT_UYVY422: case AV_PIX_FMT_YUV422P: case AV_PIX_FMT_YUV440P: case AV_PIX_FMT_YUV444P: case AV_PIX_FMT_GBRP: case AV_PIX_FMT_GBRAP: case AV_PIX_FMT_GRAY8: case AV_PIX_FMT_GRAY16BE: case AV_PIX_FMT_GRAY16LE: case AV_PIX_FMT_YUVJ420P: case AV_PIX_FMT_YUVJ422P: case AV_PIX_FMT_YUVJ440P: case AV_PIX_FMT_YUVJ444P: case AV_PIX_FMT_YUVA420P: case AV_PIX_FMT_YUVA422P: case AV_PIX_FMT_YUVA444P: case AV_PIX_FMT_YUV420P9LE: case AV_PIX_FMT_YUV420P9BE: case AV_PIX_FMT_YUV420P10LE: case AV_PIX_FMT_YUV420P10BE: case AV_PIX_FMT_YUV422P9LE: case AV_PIX_FMT_YUV422P9BE: case AV_PIX_FMT_YUV422P10LE: case AV_PIX_FMT_YUV422P10BE: case AV_PIX_FMT_YUVA422P10LE: case AV_PIX_FMT_YUVA422P10BE: case AV_PIX_FMT_YUV444P9LE: case AV_PIX_FMT_YUV444P9BE: case AV_PIX_FMT_YUV444P10LE: case AV_PIX_FMT_YUV444P10BE: case AV_PIX_FMT_YUVA444P10LE: case AV_PIX_FMT_YUVA444P10BE: case AV_PIX_FMT_GBRP9LE: case AV_PIX_FMT_GBRP9BE: case AV_PIX_FMT_GBRP10LE: case AV_PIX_FMT_GBRP10BE: case AV_PIX_FMT_GBRAP12LE: case AV_PIX_FMT_GBRAP12BE: w_align = 16; //FIXME assume 16 pixel per macroblock h_align = 16 * 2; // interlaced needs 2 macroblocks height break; case AV_PIX_FMT_YUV411P: case AV_PIX_FMT_UYYVYY411: w_align = 32; h_align = 8; break; case AV_PIX_FMT_YUV410P: if (s->codec_id == AV_CODEC_ID_SVQ1) { w_align = 64; h_align = 64; } case AV_PIX_FMT_RGB555: if (s->codec_id == AV_CODEC_ID_RPZA) { w_align = 4; h_align = 4; } case AV_PIX_FMT_PAL8: case AV_PIX_FMT_BGR8: case AV_PIX_FMT_RGB8: if (s->codec_id == AV_CODEC_ID_SMC) { w_align = 4; h_align = 4; } break; case AV_PIX_FMT_BGR24: if ((s->codec_id == AV_CODEC_ID_MSZH) || (s->codec_id == AV_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 == AV_CODEC_ID_H264) // some of the optimized chroma MC reads one line too much *height += 2; for (i = 0; i < 4; i++) linesize_align[i] = max_align; } void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt); int chroma_shift = desc->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); } 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], buf, nb_channels, frame->nb_samples, sample_fmt, align)) < 0) { if (frame->extended_data != frame->data) av_free(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; } 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; } int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const 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 (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) { if (lockmgr_cb) { if ((*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. At least %d threads are " "calling avcodec_open2() at the same time right now.\n", entangled_thread_counter); ret = -1; goto end; } } avctx->internal = av_mallocz(sizeof(AVCodecInternal)); if (!avctx->internal) { ret = AVERROR(ENOMEM); goto end; } avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool)); if (!avctx->internal->pool) { ret = AVERROR(ENOMEM); goto free_and_end; } avctx->internal->to_free = av_frame_alloc(); if (!avctx->internal->to_free) { ret = AVERROR(ENOMEM); goto free_and_end; } avctx->internal->compat_decode_frame = av_frame_alloc(); if (!avctx->internal->compat_decode_frame) { ret = AVERROR(ENOMEM); goto free_and_end; } avctx->internal->buffer_frame = av_frame_alloc(); if (!avctx->internal->buffer_frame) { ret = AVERROR(ENOMEM); goto free_and_end; } avctx->internal->buffer_pkt = av_packet_alloc(); if (!avctx->internal->buffer_pkt) { ret = AVERROR(ENOMEM); goto free_and_end; } avctx->internal->ds.in_pkt = av_packet_alloc(); if (!avctx->internal->ds.in_pkt) { ret = AVERROR(ENOMEM); goto free_and_end; } avctx->internal->last_pkt_props = av_packet_alloc(); if (!avctx->internal->last_pkt_props) { ret = AVERROR(ENOMEM); goto free_and_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 (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height) ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height); else if (avctx->width && avctx->height) ret = ff_set_dimensions(avctx, avctx->width, avctx->height); if (ret < 0) goto free_and_end; 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"); ff_set_dimensions(avctx, 0, 0); } if (avctx->width > 0 && avctx->height > 0) { if (av_image_check_sar(avctx->width, avctx->height, avctx->sample_aspect_ratio) < 0) { av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n", avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den); avctx->sample_aspect_ratio = (AVRational){ 0, 1 }; } } /* 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); if (avctx->channels > FF_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 == AV_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->capabilities & AV_CODEC_CAP_EXPERIMENTAL) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { ret = AVERROR_EXPERIMENTAL; goto free_and_end; } 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) { ret = ff_thread_init(avctx); if (ret < 0) { goto free_and_end; } } if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS)) avctx->thread_count = 1; if (av_codec_is_encoder(avctx->codec)) { int i; #if FF_API_CODED_FRAME FF_DISABLE_DEPRECATION_WARNINGS avctx->coded_frame = av_frame_alloc(); if (!avctx->coded_frame) { ret = AVERROR(ENOMEM); goto free_and_end; } FF_ENABLE_DEPRECATION_WARNINGS #endif if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) { av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n"); ret = AVERROR(EINVAL); goto free_and_end; } 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->channels == 1 && av_get_planar_sample_fmt(avctx->sample_fmt) == av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) { 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] != AV_PIX_FMT_NONE; i++) if (avctx->pix_fmt == avctx->codec->pix_fmts[i]) break; if (avctx->codec->pix_fmts[i] == AV_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->pix_fmts[i] == AV_PIX_FMT_YUVJ420P || avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P || avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P || avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P) avctx->color_range = AVCOL_RANGE_JPEG; } 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); } if (!avctx->rc_initial_buffer_occupancy) avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4; if (avctx->ticks_per_frame && avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) { av_log(avctx, AV_LOG_ERROR, "ticks_per_frame %d too large for the timebase %d/%d.", avctx->ticks_per_frame, avctx->time_base.num, avctx->time_base.den); goto free_and_end; } if (avctx->hw_frames_ctx) { AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data; if (frames_ctx->format != avctx->pix_fmt) { av_log(avctx, AV_LOG_ERROR, "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n"); ret = AVERROR(EINVAL); goto free_and_end; } if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE && avctx->sw_pix_fmt != frames_ctx->sw_format) { av_log(avctx, AV_LOG_ERROR, "Mismatching AVCodecContext.sw_pix_fmt (%s) " "and AVHWFramesContext.sw_format (%s)\n", av_get_pix_fmt_name(avctx->sw_pix_fmt), av_get_pix_fmt_name(frames_ctx->sw_format)); ret = AVERROR(EINVAL); goto free_and_end; } avctx->sw_pix_fmt = frames_ctx->sw_format; } } 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)) { /* validate channel layout from the decoder */ if (avctx->channel_layout) { int channels = av_get_channel_layout_nb_channels(avctx->channel_layout); if (!avctx->channels) avctx->channels = channels; else if (channels != avctx->channels) { av_log(avctx, AV_LOG_WARNING, "channel layout does not match number of channels\n"); avctx->channel_layout = 0; } } if (avctx->channels && avctx->channels < 0 || avctx->channels > FF_SANE_NB_CHANNELS) { ret = AVERROR(EINVAL); goto free_and_end; } } end: if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init) { entangled_thread_counter--; /* Release any user-supplied mutex. */ if (lockmgr_cb) { (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE); } } if (options) { av_dict_free(options); *options = tmp; } return ret; free_and_end: if (avctx->codec && (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)) avctx->codec->close(avctx); if (avctx->priv_data && avctx->codec && avctx->codec->priv_class) av_opt_free(avctx->priv_data); av_opt_free(avctx); #if FF_API_CODED_FRAME FF_DISABLE_DEPRECATION_WARNINGS av_frame_free(&avctx->coded_frame); FF_ENABLE_DEPRECATION_WARNINGS #endif av_dict_free(&tmp); av_freep(&avctx->priv_data); if (avctx->internal) { av_frame_free(&avctx->internal->to_free); av_frame_free(&avctx->internal->compat_decode_frame); av_frame_free(&avctx->internal->buffer_frame); av_packet_free(&avctx->internal->buffer_pkt); av_packet_free(&avctx->internal->last_pkt_props); av_packet_free(&avctx->internal->ds.in_pkt); av_freep(&avctx->internal->pool); } av_freep(&avctx->internal); avctx->codec = NULL; goto end; } void avsubtitle_free(AVSubtitle *sub) { int i; for (i = 0; i < sub->num_rects; i++) { av_freep(&sub->rects[i]->data[0]); av_freep(&sub->rects[i]->data[1]); av_freep(&sub->rects[i]->data[2]); av_freep(&sub->rects[i]->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) { int i; if (avcodec_is_open(avctx)) { FramePool *pool = avctx->internal->pool; if (HAVE_THREADS && avctx->internal->thread_ctx) ff_thread_free(avctx); if (avctx->codec && avctx->codec->close) avctx->codec->close(avctx); av_frame_free(&avctx->internal->to_free); av_frame_free(&avctx->internal->compat_decode_frame); av_frame_free(&avctx->internal->buffer_frame); av_packet_free(&avctx->internal->buffer_pkt); av_packet_free(&avctx->internal->last_pkt_props); av_packet_free(&avctx->internal->ds.in_pkt); for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++) av_buffer_pool_uninit(&pool->pools[i]); av_freep(&avctx->internal->pool); if (avctx->hwaccel && avctx->hwaccel->uninit) avctx->hwaccel->uninit(avctx); av_freep(&avctx->internal->hwaccel_priv_data); ff_decode_bsfs_uninit(avctx); av_freep(&avctx->internal); } for (i = 0; i < avctx->nb_coded_side_data; i++) av_freep(&avctx->coded_side_data[i].data); av_freep(&avctx->coded_side_data); avctx->nb_coded_side_data = 0; av_buffer_unref(&avctx->hw_frames_ctx); av_buffer_unref(&avctx->hw_device_ctx); 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); #if FF_API_CODED_FRAME FF_DISABLE_DEPRECATION_WARNINGS av_frame_free(&avctx->coded_frame); FF_ENABLE_DEPRECATION_WARNINGS #endif } avctx->codec = NULL; avctx->active_thread_type = 0; return 0; } static AVCodec *find_encdec(enum AVCodecID id, int encoder) { AVCodec *p, *experimental = NULL; p = first_avcodec; while (p) { if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) && p->id == id) { if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) { experimental = p; } else return p; } p = p->next; } return experimental; } AVCodec *avcodec_find_encoder(enum AVCodecID id) { return find_encdec(id, 1); } 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 AVCodecID id) { return find_encdec(id, 0); } 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; } 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; } size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag) { int i, len, ret = 0; #define TAG_PRINT(x) \ (((x) >= '0' && (x) <= '9') || \ ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \ ((x) == '.' || (x) == ' ')) for (i = 0; i < 4; i++) { len = snprintf(buf, buf_size, TAG_PRINT(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_name; const char *profile = NULL; char buf1[32]; int bitrate; int new_line = 0; AVRational display_aspect_ratio; const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id); if (desc) { codec_name = desc->name; profile = avcodec_profile_name(enc->codec_id, enc->profile); } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) { /* fake mpeg2 transport stream codec (currently not * registered) */ codec_name = "mpeg2ts"; } else { /* output avi tags */ char tag_buf[32]; av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag); snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag); codec_name = buf1; } switch (enc->codec_type) { case AVMEDIA_TYPE_VIDEO: snprintf(buf, buf_size, "Video: %s%s", codec_name, enc->mb_decision ? " (hq)" : ""); 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); } av_strlcat(buf, "\n ", buf_size); snprintf(buf + strlen(buf), buf_size - strlen(buf), "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" : av_get_pix_fmt_name(enc->pix_fmt)); if (enc->color_range != AVCOL_RANGE_UNSPECIFIED) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s", av_color_range_name(enc->color_range)); if (enc->colorspace != AVCOL_SPC_UNSPECIFIED || enc->color_primaries != AVCOL_PRI_UNSPECIFIED || enc->color_trc != AVCOL_TRC_UNSPECIFIED) { new_line = 1; snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s/%s/%s", av_color_space_name(enc->colorspace), av_color_primaries_name(enc->color_primaries), av_color_transfer_name(enc->color_trc)); } if (av_log_get_level() >= AV_LOG_DEBUG && enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %s", av_chroma_location_name(enc->chroma_sample_location)); if (enc->width) { av_strlcat(buf, new_line ? "\n " : ", ", buf_size); snprintf(buf + strlen(buf), buf_size - strlen(buf), "%dx%d", enc->width, enc->height); if (av_log_get_level() >= AV_LOG_VERBOSE && (enc->width != enc->coded_width || enc->height != enc->coded_height)) snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%dx%d)", enc->coded_width, enc->coded_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 AVMEDIA_TYPE_AUDIO: snprintf(buf, buf_size, "Audio: %s", codec_name); 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); } av_strlcat(buf, "\n ", buf_size); if (enc->sample_rate) { snprintf(buf + strlen(buf), buf_size - strlen(buf), "%d Hz, ", enc->sample_rate); } 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; case AVMEDIA_TYPE_DATA: snprintf(buf, buf_size, "Data: %s", codec_name); break; case AVMEDIA_TYPE_SUBTITLE: snprintf(buf, buf_size, "Subtitle: %s", codec_name); break; case AVMEDIA_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 & AV_CODEC_FLAG_PASS1) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", pass 1"); if (enc->flags & AV_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; } const char *avcodec_profile_name(enum AVCodecID codec_id, int profile) { const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id); const AVProfile *p; if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles) return NULL; for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++) if (p->profile == profile) return p->name; return NULL; } unsigned avcodec_version(void) { return LIBAVCODEC_VERSION_INT; } const char *avcodec_configuration(void) { return LIBAV_CONFIGURATION; } const char *avcodec_license(void) { #define LICENSE_PREFIX "libavcodec license: " return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1; } int av_get_exact_bits_per_sample(enum AVCodecID codec_id) { switch (codec_id) { case AV_CODEC_ID_ADPCM_CT: case AV_CODEC_ID_ADPCM_IMA_APC: case AV_CODEC_ID_ADPCM_IMA_EA_SEAD: case AV_CODEC_ID_ADPCM_IMA_WS: case AV_CODEC_ID_ADPCM_G722: case AV_CODEC_ID_ADPCM_YAMAHA: return 4; case AV_CODEC_ID_PCM_ALAW: case AV_CODEC_ID_PCM_MULAW: case AV_CODEC_ID_PCM_S8: case AV_CODEC_ID_PCM_U8: case AV_CODEC_ID_PCM_ZORK: return 8; case AV_CODEC_ID_PCM_S16BE: case AV_CODEC_ID_PCM_S16BE_PLANAR: case AV_CODEC_ID_PCM_S16LE: case AV_CODEC_ID_PCM_S16LE_PLANAR: case AV_CODEC_ID_PCM_U16BE: case AV_CODEC_ID_PCM_U16LE: return 16; case AV_CODEC_ID_PCM_S24DAUD: case AV_CODEC_ID_PCM_S24BE: case AV_CODEC_ID_PCM_S24LE: case AV_CODEC_ID_PCM_S24LE_PLANAR: case AV_CODEC_ID_PCM_U24BE: case AV_CODEC_ID_PCM_U24LE: return 24; case AV_CODEC_ID_PCM_S32BE: case AV_CODEC_ID_PCM_S32LE: case AV_CODEC_ID_PCM_S32LE_PLANAR: case AV_CODEC_ID_PCM_U32BE: case AV_CODEC_ID_PCM_U32LE: case AV_CODEC_ID_PCM_F32BE: case AV_CODEC_ID_PCM_F32LE: return 32; case AV_CODEC_ID_PCM_F64BE: case AV_CODEC_ID_PCM_F64LE: return 64; default: return 0; } } int av_get_bits_per_sample(enum AVCodecID codec_id) { switch (codec_id) { case AV_CODEC_ID_ADPCM_SBPRO_2: return 2; case AV_CODEC_ID_ADPCM_SBPRO_3: return 3; case AV_CODEC_ID_ADPCM_SBPRO_4: case AV_CODEC_ID_ADPCM_IMA_WAV: case AV_CODEC_ID_ADPCM_IMA_QT: case AV_CODEC_ID_ADPCM_SWF: case AV_CODEC_ID_ADPCM_MS: return 4; default: return av_get_exact_bits_per_sample(codec_id); } } static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba, uint32_t tag, int bits_per_coded_sample, int frame_bytes) { int bps = av_get_exact_bits_per_sample(id); /* codecs with an exact constant bits per sample */ if (bps > 0 && ch > 0 && frame_bytes > 0) return (frame_bytes * 8) / (bps * ch); bps = bits_per_coded_sample; /* codecs with a fixed packet duration */ switch (id) { case AV_CODEC_ID_ADPCM_ADX: return 32; case AV_CODEC_ID_ADPCM_IMA_QT: return 64; case AV_CODEC_ID_ADPCM_EA_XAS: return 128; case AV_CODEC_ID_AMR_NB: case AV_CODEC_ID_GSM: case AV_CODEC_ID_QCELP: case AV_CODEC_ID_RA_144: case AV_CODEC_ID_RA_288: return 160; case AV_CODEC_ID_IMC: return 256; case AV_CODEC_ID_AMR_WB: case AV_CODEC_ID_GSM_MS: return 320; case AV_CODEC_ID_MP1: return 384; case AV_CODEC_ID_ATRAC1: return 512; case AV_CODEC_ID_ATRAC3: return 1024; case AV_CODEC_ID_MP2: case AV_CODEC_ID_MUSEPACK7: return 1152; case AV_CODEC_ID_AC3: return 1536; } if (sr > 0) { /* calc from sample rate */ if (id == AV_CODEC_ID_TTA) return 256 * sr / 245; if (ch > 0) { /* calc from sample rate and channels */ if (id == AV_CODEC_ID_BINKAUDIO_DCT) return (480 << (sr / 22050)) / ch; } if (id == AV_CODEC_ID_MP3) return sr <= 24000 ? 576 : 1152; } if (ba > 0) { /* calc from block_align */ if (id == AV_CODEC_ID_SIPR) { switch (ba) { case 20: return 160; case 19: return 144; case 29: return 288; case 37: return 480; } } else if (id == AV_CODEC_ID_ILBC) { switch (ba) { case 38: return 160; case 50: return 240; } } } if (frame_bytes > 0) { /* calc from frame_bytes only */ if (id == AV_CODEC_ID_TRUESPEECH) return 240 * (frame_bytes / 32); if (id == AV_CODEC_ID_NELLYMOSER) return 256 * (frame_bytes / 64); if (bps > 0) { /* calc from frame_bytes and bits_per_coded_sample */ if (id == AV_CODEC_ID_ADPCM_G726) return frame_bytes * 8 / bps; } if (ch > 0) { /* calc from frame_bytes and channels */ switch (id) { case AV_CODEC_ID_ADPCM_4XM: case AV_CODEC_ID_ADPCM_IMA_ISS: return (frame_bytes - 4 * ch) * 2 / ch; case AV_CODEC_ID_ADPCM_IMA_SMJPEG: return (frame_bytes - 4) * 2 / ch; case AV_CODEC_ID_ADPCM_IMA_AMV: return (frame_bytes - 8) * 2 / ch; case AV_CODEC_ID_ADPCM_XA: return (frame_bytes / 128) * 224 / ch; case AV_CODEC_ID_INTERPLAY_DPCM: return (frame_bytes - 6 - ch) / ch; case AV_CODEC_ID_ROQ_DPCM: return (frame_bytes - 8) / ch; case AV_CODEC_ID_XAN_DPCM: return (frame_bytes - 2 * ch) / ch; case AV_CODEC_ID_MACE3: return 3 * frame_bytes / ch; case AV_CODEC_ID_MACE6: return 6 * frame_bytes / ch; case AV_CODEC_ID_PCM_LXF: return 2 * (frame_bytes / (5 * ch)); } if (tag) { /* calc from frame_bytes, channels, and codec_tag */ if (id == AV_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 (id) { case AV_CODEC_ID_ADPCM_IMA_WAV: return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8); case AV_CODEC_ID_ADPCM_IMA_DK3: return blocks * (((ba - 16) * 2 / 3 * 4) / ch); case AV_CODEC_ID_ADPCM_IMA_DK4: return blocks * (1 + (ba - 4 * ch) * 2 / ch); case AV_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 (id) { case AV_CODEC_ID_PCM_DVD: return 2 * (frame_bytes / ((bps * 2 / 8) * ch)); case AV_CODEC_ID_PCM_BLURAY: return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8); case AV_CODEC_ID_S302M: return 2 * (frame_bytes / ((bps + 4) / 4)) / ch; } } } } return 0; } int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes) { return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate, avctx->channels, avctx->block_align, avctx->codec_tag, avctx->bits_per_coded_sample, frame_bytes); } int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes) { return get_audio_frame_duration(par->codec_id, par->sample_rate, par->channels, par->block_align, par->codec_tag, par->bits_per_coded_sample, frame_bytes); } #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; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ; return i; } 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(const AVHWAccel *hwaccel) { return hwaccel ? hwaccel->next : first_hwaccel; } int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op)) { if (lockmgr_cb) { // There is no good way to rollback a failure to destroy the // mutex, so we ignore failures. lockmgr_cb(&codec_mutex, AV_LOCK_DESTROY); lockmgr_cb(&avformat_mutex, AV_LOCK_DESTROY); lockmgr_cb = NULL; codec_mutex = NULL; avformat_mutex = NULL; } if (cb) { void *new_codec_mutex = NULL; void *new_avformat_mutex = NULL; int err; if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) { return err > 0 ? AVERROR_UNKNOWN : err; } if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) { // Ignore failures to destroy the newly created mutex. cb(&new_codec_mutex, AV_LOCK_DESTROY); return err > 0 ? AVERROR_UNKNOWN : err; } lockmgr_cb = cb; codec_mutex = new_codec_mutex; avformat_mutex = new_avformat_mutex; } return 0; } int avpriv_lock_avformat(void) { if (lockmgr_cb) { if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_OBTAIN)) return -1; } return 0; } int avpriv_unlock_avformat(void) { if (lockmgr_cb) { if ((*lockmgr_cb)(&avformat_mutex, AV_LOCK_RELEASE)) return -1; } return 0; } unsigned int avpriv_toupper4(unsigned int x) { return av_toupper(x & 0xFF) + (av_toupper((x >> 8) & 0xFF) << 8) + (av_toupper((x >> 16) & 0xFF) << 16) + (av_toupper((x >> 24) & 0xFF) << 24); } int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src) { int ret; dst->owner = src->owner; ret = av_frame_ref(dst->f, src->f); if (ret < 0) return ret; if (src->progress && !(dst->progress = av_buffer_ref(src->progress))) { ff_thread_release_buffer(dst->owner, dst); return AVERROR(ENOMEM); } return 0; } #if !HAVE_THREADS int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags) { f->owner = avctx; return ff_get_buffer(avctx, f->f, flags); } void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f) { if (f->f) av_frame_unref(f->f); } void ff_thread_finish_setup(AVCodecContext *avctx) { } void ff_thread_report_progress(ThreadFrame *f, int progress, int field) { } void ff_thread_await_progress(ThreadFrame *f, int progress, int field) { } #endif int avcodec_is_open(AVCodecContext *s) { return !!s->internal; } const uint8_t *avpriv_find_start_code(const uint8_t *restrict p, const uint8_t *end, uint32_t * restrict state) { int i; assert(p <= end); if (p >= end) return end; for (i = 0; i < 3; i++) { uint32_t tmp = *state << 8; *state = tmp + *(p++); if (tmp == 0x100 || p == end) return p; } while (p < end) { if (p[-1] > 1 ) p += 3; else if (p[-2] ) p += 2; else if (p[-3]|(p[-1]-1)) p++; else { p++; break; } } p = FFMIN(p, end) - 4; *state = AV_RB32(p); return p + 4; } AVCPBProperties *av_cpb_properties_alloc(size_t *size) { AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties)); if (!props) return NULL; if (size) *size = sizeof(*props); props->vbv_delay = UINT64_MAX; return props; } AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx) { AVPacketSideData *tmp; AVCPBProperties *props; size_t size; props = av_cpb_properties_alloc(&size); if (!props) return NULL; tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp)); if (!tmp) { av_freep(&props); return NULL; } avctx->coded_side_data = tmp; avctx->nb_coded_side_data++; avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES; avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props; avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size; return props; } static void codec_parameters_reset(AVCodecParameters *par) { av_freep(&par->extradata); memset(par, 0, sizeof(*par)); par->codec_type = AVMEDIA_TYPE_UNKNOWN; par->codec_id = AV_CODEC_ID_NONE; par->format = -1; par->field_order = AV_FIELD_UNKNOWN; par->color_range = AVCOL_RANGE_UNSPECIFIED; par->color_primaries = AVCOL_PRI_UNSPECIFIED; par->color_trc = AVCOL_TRC_UNSPECIFIED; par->color_space = AVCOL_SPC_UNSPECIFIED; par->chroma_location = AVCHROMA_LOC_UNSPECIFIED; par->sample_aspect_ratio = (AVRational){ 0, 1 }; } AVCodecParameters *avcodec_parameters_alloc(void) { AVCodecParameters *par = av_mallocz(sizeof(*par)); if (!par) return NULL; codec_parameters_reset(par); return par; } void avcodec_parameters_free(AVCodecParameters **ppar) { AVCodecParameters *par = *ppar; if (!par) return; codec_parameters_reset(par); av_freep(ppar); } int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src) { codec_parameters_reset(dst); memcpy(dst, src, sizeof(*dst)); dst->extradata = NULL; dst->extradata_size = 0; if (src->extradata) { dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); if (!dst->extradata) return AVERROR(ENOMEM); memcpy(dst->extradata, src->extradata, src->extradata_size); dst->extradata_size = src->extradata_size; } return 0; } int avcodec_parameters_from_context(AVCodecParameters *par, const AVCodecContext *codec) { codec_parameters_reset(par); par->codec_type = codec->codec_type; par->codec_id = codec->codec_id; par->codec_tag = codec->codec_tag; par->bit_rate = codec->bit_rate; par->bits_per_coded_sample = codec->bits_per_coded_sample; par->profile = codec->profile; par->level = codec->level; switch (par->codec_type) { case AVMEDIA_TYPE_VIDEO: par->format = codec->pix_fmt; par->width = codec->width; par->height = codec->height; par->field_order = codec->field_order; par->color_range = codec->color_range; par->color_primaries = codec->color_primaries; par->color_trc = codec->color_trc; par->color_space = codec->colorspace; par->chroma_location = codec->chroma_sample_location; par->sample_aspect_ratio = codec->sample_aspect_ratio; break; case AVMEDIA_TYPE_AUDIO: par->format = codec->sample_fmt; par->channel_layout = codec->channel_layout; par->channels = codec->channels; par->sample_rate = codec->sample_rate; par->block_align = codec->block_align; par->initial_padding = codec->initial_padding; break; } if (codec->extradata) { par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); if (!par->extradata) return AVERROR(ENOMEM); memcpy(par->extradata, codec->extradata, codec->extradata_size); par->extradata_size = codec->extradata_size; } return 0; } int avcodec_parameters_to_context(AVCodecContext *codec, const AVCodecParameters *par) { codec->codec_type = par->codec_type; codec->codec_id = par->codec_id; codec->codec_tag = par->codec_tag; codec->bit_rate = par->bit_rate; codec->bits_per_coded_sample = par->bits_per_coded_sample; codec->profile = par->profile; codec->level = par->level; switch (par->codec_type) { case AVMEDIA_TYPE_VIDEO: codec->pix_fmt = par->format; codec->width = par->width; codec->height = par->height; codec->field_order = par->field_order; codec->color_range = par->color_range; codec->color_primaries = par->color_primaries; codec->color_trc = par->color_trc; codec->colorspace = par->color_space; codec->chroma_sample_location = par->chroma_location; codec->sample_aspect_ratio = par->sample_aspect_ratio; break; case AVMEDIA_TYPE_AUDIO: codec->sample_fmt = par->format; codec->channel_layout = par->channel_layout; codec->channels = par->channels; codec->sample_rate = par->sample_rate; codec->block_align = par->block_align; codec->initial_padding = par->initial_padding; break; } if (par->extradata) { av_freep(&codec->extradata); codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE); if (!codec->extradata) return AVERROR(ENOMEM); memcpy(codec->extradata, par->extradata, par->extradata_size); codec->extradata_size = par->extradata_size; } return 0; }