/* * 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 "config.h" #include "libavutil/atomic.h" #include "libavutil/attributes.h" #include "libavutil/avassert.h" #include "libavutil/avstring.h" #include "libavutil/bprint.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/mem_internal.h" #include "libavutil/pixdesc.h" #include "libavutil/imgutils.h" #include "libavutil/samplefmt.h" #include "libavutil/dict.h" #include "libavutil/thread.h" #include "avcodec.h" #include "decode.h" #include "libavutil/opt.h" #include "me_cmp.h" #include "mpegvideo.h" #include "thread.h" #include "frame_thread_encoder.h" #include "internal.h" #include "raw.h" #include "bytestream.h" #include "version.h" #include #include #include #include #if CONFIG_ICONV # include #endif #include "libavutil/ffversion.h" const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION; #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS static int default_lockmgr_cb(void **arg, enum AVLockOp op) { void * volatile * mutex = arg; int err; switch (op) { case AV_LOCK_CREATE: return 0; case AV_LOCK_OBTAIN: if (!*mutex) { pthread_mutex_t *tmp = av_malloc(sizeof(pthread_mutex_t)); if (!tmp) return AVERROR(ENOMEM); if ((err = pthread_mutex_init(tmp, NULL))) { av_free(tmp); return AVERROR(err); } if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) { pthread_mutex_destroy(tmp); av_free(tmp); } } if ((err = pthread_mutex_lock(*mutex))) return AVERROR(err); return 0; case AV_LOCK_RELEASE: if ((err = pthread_mutex_unlock(*mutex))) return AVERROR(err); return 0; case AV_LOCK_DESTROY: if (*mutex) pthread_mutex_destroy(*mutex); av_free(*mutex); avpriv_atomic_ptr_cas(mutex, *mutex, NULL); return 0; } return 1; } static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb; #else static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL; #endif volatile int ff_avcodec_locked; static int volatile entangled_thread_counter = 0; static void *codec_mutex; static void *avformat_mutex; void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size) { uint8_t **p = ptr; if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) { av_freep(p); *size = 0; return; } if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1)) memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE); } void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size) { uint8_t **p = ptr; if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) { av_freep(p); *size = 0; return; } if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1)) memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE); } /* encoder management */ static AVCodec *first_avcodec = NULL; static AVCodec **last_avcodec = &first_avcodec; 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 = last_avcodec; codec->next = NULL; while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec)) p = &(*p)->next; last_avcodec = &codec->next; if (codec->init_static_data) codec->init_static_data(codec); } #if FF_API_EMU_EDGE unsigned avcodec_get_edge_width(void) { return EDGE_WIDTH; } #endif #if FF_API_SET_DIMENSIONS void avcodec_set_dimensions(AVCodecContext *s, int width, int height) { int ret = ff_set_dimensions(s, width, height); if (ret < 0) { av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height); } } #endif int ff_set_dimensions(AVCodecContext *s, int width, int height) { int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s); if (ret < 0) width = height = 0; s->coded_width = width; s->coded_height = height; s->width = AV_CEIL_RSHIFT(width, s->lowres); s->height = AV_CEIL_RSHIFT(height, s->lowres); 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]) { int i; int w_align = 1; int h_align = 1; AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt); if (desc) { w_align = 1 << desc->log2_chroma_w; h_align = 1 << desc->log2_chroma_h; } 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_YUV420P12LE: case AV_PIX_FMT_YUV420P12BE: case AV_PIX_FMT_YUV420P14LE: case AV_PIX_FMT_YUV420P14BE: case AV_PIX_FMT_YUV420P16LE: case AV_PIX_FMT_YUV420P16BE: case AV_PIX_FMT_YUVA420P9LE: case AV_PIX_FMT_YUVA420P9BE: case AV_PIX_FMT_YUVA420P10LE: case AV_PIX_FMT_YUVA420P10BE: case AV_PIX_FMT_YUVA420P16LE: case AV_PIX_FMT_YUVA420P16BE: case AV_PIX_FMT_YUV422P9LE: case AV_PIX_FMT_YUV422P9BE: case AV_PIX_FMT_YUV422P10LE: case AV_PIX_FMT_YUV422P10BE: case AV_PIX_FMT_YUV422P12LE: case AV_PIX_FMT_YUV422P12BE: case AV_PIX_FMT_YUV422P14LE: case AV_PIX_FMT_YUV422P14BE: case AV_PIX_FMT_YUV422P16LE: case AV_PIX_FMT_YUV422P16BE: case AV_PIX_FMT_YUVA422P9LE: case AV_PIX_FMT_YUVA422P9BE: case AV_PIX_FMT_YUVA422P10LE: case AV_PIX_FMT_YUVA422P10BE: case AV_PIX_FMT_YUVA422P16LE: case AV_PIX_FMT_YUVA422P16BE: case AV_PIX_FMT_YUV440P10LE: case AV_PIX_FMT_YUV440P10BE: case AV_PIX_FMT_YUV440P12LE: case AV_PIX_FMT_YUV440P12BE: case AV_PIX_FMT_YUV444P9LE: case AV_PIX_FMT_YUV444P9BE: case AV_PIX_FMT_YUV444P10LE: case AV_PIX_FMT_YUV444P10BE: case AV_PIX_FMT_YUV444P12LE: case AV_PIX_FMT_YUV444P12BE: case AV_PIX_FMT_YUV444P14LE: case AV_PIX_FMT_YUV444P14BE: case AV_PIX_FMT_YUV444P16LE: case AV_PIX_FMT_YUV444P16BE: case AV_PIX_FMT_YUVA444P9LE: case AV_PIX_FMT_YUVA444P9BE: case AV_PIX_FMT_YUVA444P10LE: case AV_PIX_FMT_YUVA444P10BE: case AV_PIX_FMT_YUVA444P16LE: case AV_PIX_FMT_YUVA444P16BE: case AV_PIX_FMT_GBRP9LE: case AV_PIX_FMT_GBRP9BE: case AV_PIX_FMT_GBRP10LE: case AV_PIX_FMT_GBRP10BE: case AV_PIX_FMT_GBRP12LE: case AV_PIX_FMT_GBRP12BE: case AV_PIX_FMT_GBRP14LE: case AV_PIX_FMT_GBRP14BE: case AV_PIX_FMT_GBRP16LE: case AV_PIX_FMT_GBRP16BE: case AV_PIX_FMT_GBRAP12LE: case AV_PIX_FMT_GBRAP12BE: case AV_PIX_FMT_GBRAP16LE: case AV_PIX_FMT_GBRAP16BE: 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_YUVJ411P: case AV_PIX_FMT_UYYVYY411: w_align = 32; h_align = 16 * 2; break; case AV_PIX_FMT_YUV410P: if (s->codec_id == AV_CODEC_ID_SVQ1) { w_align = 64; h_align = 64; } break; case AV_PIX_FMT_RGB555: if (s->codec_id == AV_CODEC_ID_RPZA) { w_align = 4; h_align = 4; } if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) { w_align = 8; h_align = 8; } break; case AV_PIX_FMT_PAL8: case AV_PIX_FMT_BGR8: case AV_PIX_FMT_RGB8: if (s->codec_id == AV_CODEC_ID_SMC || s->codec_id == AV_CODEC_ID_CINEPAK) { w_align = 4; h_align = 4; } if (s->codec_id == AV_CODEC_ID_JV || s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) { w_align = 8; h_align = 8; } 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; case AV_PIX_FMT_RGB24: if (s->codec_id == AV_CODEC_ID_CINEPAK) { w_align = 4; h_align = 4; } break; default: break; } if (s->codec_id == AV_CODEC_ID_IFF_ILBM) { w_align = FFMAX(w_align, 8); } *width = FFALIGN(*width, w_align); *height = FFALIGN(*height, h_align); if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) { // some of the optimized chroma MC reads one line too much // which is also done in mpeg decoders with lowres > 0 *height += 2; // H.264 uses edge emulation for out of frame motion vectors, for this // it requires a temporary area large enough to hold a 21x21 block, // increasing witdth ensure that the temporary area is large enough, // the next rounded up width is 32 *width = FFMAX(*width, 32); } for (i = 0; i < 4; i++) linesize_align[i] = STRIDE_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_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos) { if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB) return AVERROR(EINVAL); pos--; *xpos = (pos&1) * 128; *ypos = ((pos>>1)^(pos<4)) * 128; return 0; } enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos) { int pos, xout, yout; for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) { if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos) return pos; } return AVCHROMA_LOC_UNSPECIFIED; } 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_array(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; } void ff_color_frame(AVFrame *frame, const int c[4]) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format); int p, y, x; av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR); for (p = 0; pnb_components; p++) { uint8_t *dst = frame->data[p]; int is_chroma = p == 1 || p == 2; int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width; int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height; for (y = 0; y < height; y++) { if (desc->comp[0].depth >= 9) { for (x = 0; xlinesize[p]; } } } 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; } emms_c(); 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; } emms_c(); return 0; } enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags, unsigned int fourcc) { while (tags->pix_fmt >= 0) { if (tags->fourcc == fourcc) return tags->pix_fmt; tags++; } return AV_PIX_FMT_NONE; } MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase) MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor) MAKE_ACCESSORS(AVCodecContext, codec, int, lowres) MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll) MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix) unsigned av_codec_get_codec_properties(const AVCodecContext *codec) { return codec->properties; } int av_codec_get_max_lowres(const AVCodec *codec) { return codec->max_lowres; } int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){ return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM); } static int64_t get_bit_rate(AVCodecContext *ctx) { int64_t 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 * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate; break; default: bit_rate = 0; break; } return bit_rate; } int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options) { int ret = 0; ff_unlock_avcodec(codec); ret = avcodec_open2(avctx, codec, options); ff_lock_avcodec(avctx, codec); return ret; } int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options) { int ret = 0; AVDictionary *tmp = NULL; const AVPixFmtDescriptor *pixdesc; 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); ret = ff_lock_avcodec(avctx, codec); if (ret < 0) return ret; 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; } avctx->internal->skip_samples_multiplier = 1; 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->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) { av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist); ret = AVERROR(EINVAL); goto free_and_end; } // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height && (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) { if (avctx->coded_width && avctx->coded_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_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0 || av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 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; avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id); if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) && avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) { const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder"; AVCodec *codec2; av_log(avctx, AV_LOG_ERROR, "The %s '%s' is experimental but experimental codecs are not enabled, " "add '-strict %d' if you want to use it.\n", codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL); codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id); if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL)) av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n", codec_string, codec2->name); 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) av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n"); if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) { ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL); ff_lock_avcodec(avctx, codec); if (ret < 0) goto free_and_end; } if (HAVE_THREADS && !(avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) { 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 (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) { av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n", avctx->codec->max_lowres); avctx->lowres = avctx->codec->max_lowres; } #if FF_API_VISMV if (avctx->debug_mv) av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, " "see the codecview filter instead.\n"); #endif 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) { char buf[128]; snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt); av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n", (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf)); 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 && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG) && avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) { char buf[128]; snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt); av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n", (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf)); 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_YUVJ411P || 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 %d is not supported\n", avctx->sample_rate); ret = AVERROR(EINVAL); goto free_and_end; } } if (avctx->sample_rate < 0) { av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n", avctx->sample_rate); 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) { char buf[512]; av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout); av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf); ret = AVERROR(EINVAL); goto free_and_end; } } } if (avctx->channel_layout && avctx->channels) { int channels = av_get_channel_layout_nb_channels(avctx->channel_layout); if (channels != avctx->channels) { char buf[512]; av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout); av_log(avctx, AV_LOG_ERROR, "Channel layout '%s' with %d channels does not match number of specified channels %d\n", buf, channels, avctx->channels); 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->channels < 0) { av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n", avctx->channels); ret = AVERROR(EINVAL); goto free_and_end; } if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) { pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt); if ( avctx->bits_per_raw_sample < 0 || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) { av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n", avctx->bits_per_raw_sample, pixdesc->comp[0].depth); avctx->bits_per_raw_sample = pixdesc->comp[0].depth; } if (avctx->width <= 0 || avctx->height <= 0) { av_log(avctx, AV_LOG_ERROR, "dimensions not set\n"); ret = AVERROR(EINVAL); goto free_and_end; } } if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO) && avctx->bit_rate>0 && avctx->bit_rate<1000) { av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", avctx->bit_rate, avctx->bit_rate); } if (!avctx->rc_initial_buffer_occupancy) avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4; if (avctx->ticks_per_frame && avctx->time_base.num && 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; } } 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 ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY && avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO) av_log(avctx, AV_LOG_WARNING, "gray decoding requested but not enabled at configuration time\n"); if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME) || avctx->internal->frame_thread_encoder)) { ret = avctx->codec->init(avctx); if (ret < 0) { goto free_and_end; } } ret=0; #if FF_API_AUDIOENC_DELAY if (av_codec_is_encoder(avctx->codec)) avctx->delay = avctx->initial_padding; #endif if (av_codec_is_decoder(avctx->codec)) { if (!avctx->bit_rate) avctx->bit_rate = get_bit_rate(avctx); /* 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) { char buf[512]; av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout); av_log(avctx, AV_LOG_WARNING, "Channel layout '%s' with %d channels does not match specified number of channels %d: " "ignoring specified channel layout\n", buf, channels, avctx->channels); avctx->channel_layout = 0; } } if (avctx->channels && avctx->channels < 0 || avctx->channels > FF_SANE_NB_CHANNELS) { ret = AVERROR(EINVAL); goto free_and_end; } if (avctx->sub_charenc) { if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) { av_log(avctx, AV_LOG_ERROR, "Character encoding is only " "supported with subtitles codecs\n"); ret = AVERROR(EINVAL); goto free_and_end; } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) { av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, " "subtitles character encoding will be ignored\n", avctx->codec_descriptor->name); avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING; } else { /* input character encoding is set for a text based subtitle * codec at this point */ if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC) avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER; if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) { #if CONFIG_ICONV iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc); if (cd == (iconv_t)-1) { ret = AVERROR(errno); av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context " "with input character encoding \"%s\"\n", avctx->sub_charenc); goto free_and_end; } iconv_close(cd); #else av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles " "conversion needs a libavcodec built with iconv support " "for this codec\n"); ret = AVERROR(ENOSYS); goto free_and_end; #endif } } } #if FF_API_AVCTX_TIMEBASE if (avctx->framerate.num > 0 && avctx->framerate.den > 0) avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1})); #endif } if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) { av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class); } end: ff_unlock_avcodec(codec); 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 (codec->priv_class && codec->priv_data_size) 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 (!avctx) return 0; if (avcodec_is_open(avctx)) { FramePool *pool = avctx->internal->pool; if (CONFIG_FRAME_THREAD_ENCODER && avctx->internal->frame_thread_encoder && avctx->thread_count > 1) { ff_frame_thread_encoder_free(avctx); } if (HAVE_THREADS && avctx->internal->thread_ctx) ff_thread_free(avctx); if (avctx->codec && avctx->codec->close) avctx->codec->close(avctx); avctx->internal->byte_buffer_size = 0; av_freep(&avctx->internal->byte_buffer); 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 enum AVCodecID remap_deprecated_codec_id(enum AVCodecID id) { switch(id){ //This is for future deprecatec codec ids, its empty since //last major bump but will fill up again over time, please don't remove it default : return id; } } static AVCodec *find_encdec(enum AVCodecID id, int encoder) { AVCodec *p, *experimental = NULL; p = first_avcodec; id= remap_deprecated_codec_id(id); 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; } const char *avcodec_get_name(enum AVCodecID id) { const AVCodecDescriptor *cd; AVCodec *codec; if (id == AV_CODEC_ID_NONE) return "none"; cd = avcodec_descriptor_get(id); if (cd) return cd->name; av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id); 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; #define TAG_PRINT(x) \ (((x) >= '0' && (x) <= '9') || \ ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \ ((x) == '.' || (x) == ' ' || (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_type; const char *codec_name; const char *profile = NULL; int64_t bitrate; int new_line = 0; AVRational display_aspect_ratio; const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", "; if (!buf || buf_size <= 0) return; codec_type = av_get_media_type_string(enc->codec_type); codec_name = avcodec_get_name(enc->codec_id); profile = avcodec_profile_name(enc->codec_id, enc->profile); snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown", codec_name); buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */ if (enc->codec && strcmp(enc->codec->name, codec_name)) snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name); if (profile) snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile); if ( enc->codec_type == AVMEDIA_TYPE_VIDEO && av_log_get_level() >= AV_LOG_VERBOSE && enc->refs) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %d reference frame%s", enc->refs, enc->refs > 1 ? "s" : ""); if (enc->codec_tag) snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s / 0x%04X)", av_fourcc2str(enc->codec_tag), enc->codec_tag); switch (enc->codec_type) { case AVMEDIA_TYPE_VIDEO: { char detail[256] = "("; av_strlcat(buf, separator, 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->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE && enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth) av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample); if (enc->color_range != AVCOL_RANGE_UNSPECIFIED) av_strlcatf(detail, sizeof(detail), "%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) { if (enc->colorspace != (int)enc->color_primaries || enc->colorspace != (int)enc->color_trc) { new_line = 1; av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ", av_color_space_name(enc->colorspace), av_color_primaries_name(enc->color_primaries), av_color_transfer_name(enc->color_trc)); } else av_strlcatf(detail, sizeof(detail), "%s, ", av_get_colorspace_name(enc->colorspace)); } if (enc->field_order != AV_FIELD_UNKNOWN) { const char *field_order = "progressive"; if (enc->field_order == AV_FIELD_TT) field_order = "top first"; else if (enc->field_order == AV_FIELD_BB) field_order = "bottom first"; else if (enc->field_order == AV_FIELD_TB) field_order = "top coded first (swapped)"; else if (enc->field_order == AV_FIELD_BT) field_order = "bottom coded first (swapped)"; av_strlcatf(detail, sizeof(detail), "%s, ", field_order); } if (av_log_get_level() >= AV_LOG_VERBOSE && enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED) av_strlcatf(detail, sizeof(detail), "%s, ", av_chroma_location_name(enc->chroma_sample_location)); if (strlen(detail) > 1) { detail[strlen(detail) - 2] = 0; av_strlcatf(buf, buf_size, "%s)", detail); } } if (enc->width) { av_strlcat(buf, new_line ? separator : ", ", 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 * (int64_t)enc->sample_aspect_ratio.num, enc->height * (int64_t)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); } else { if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", Closed Captions"); if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", lossless"); } break; case AVMEDIA_TYPE_AUDIO: av_strlcat(buf, separator, 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)); } if ( enc->bits_per_raw_sample > 0 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8) snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%d bit)", enc->bits_per_raw_sample); if (av_log_get_level() >= AV_LOG_VERBOSE) { if (enc->initial_padding) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", delay %d", enc->initial_padding); if (enc->trailing_padding) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", padding %d", enc->trailing_padding); } break; case AVMEDIA_TYPE_DATA: if (av_log_get_level() >= AV_LOG_DEBUG) { int g = av_gcd(enc->time_base.num, enc->time_base.den); if (g) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %d/%d", enc->time_base.num / g, enc->time_base.den / g); } break; case AVMEDIA_TYPE_SUBTITLE: if (enc->width) snprintf(buf + strlen(buf), buf_size - strlen(buf), ", %dx%d", enc->width, enc->height); break; default: 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), ", %"PRId64" kb/s", bitrate / 1000); } else if (enc->rc_max_rate > 0) { snprintf(buf + strlen(buf), buf_size - strlen(buf), ", max. %"PRId64" kb/s", enc->rc_max_rate / 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) { // av_assert0(AV_CODEC_ID_V410==164); av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563); av_assert0(AV_CODEC_ID_ADPCM_G722==69660); // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071); av_assert0(AV_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; } int av_get_exact_bits_per_sample(enum AVCodecID codec_id) { switch (codec_id) { case AV_CODEC_ID_8SVX_EXP: case AV_CODEC_ID_8SVX_FIB: 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_OKI: case AV_CODEC_ID_ADPCM_IMA_WS: case AV_CODEC_ID_ADPCM_G722: case AV_CODEC_ID_ADPCM_YAMAHA: case AV_CODEC_ID_ADPCM_AICA: return 4; case AV_CODEC_ID_DSD_LSBF: case AV_CODEC_ID_DSD_MSBF: case AV_CODEC_ID_DSD_LSBF_PLANAR: case AV_CODEC_ID_DSD_MSBF_PLANAR: case AV_CODEC_ID_PCM_ALAW: case AV_CODEC_ID_PCM_MULAW: case AV_CODEC_ID_PCM_S8: case AV_CODEC_ID_PCM_S8_PLANAR: case AV_CODEC_ID_PCM_U8: case AV_CODEC_ID_PCM_ZORK: case AV_CODEC_ID_SDX2_DPCM: 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: case AV_CODEC_ID_PCM_F24LE: case AV_CODEC_ID_PCM_F16LE: return 32; case AV_CODEC_ID_PCM_F64BE: case AV_CODEC_ID_PCM_F64LE: case AV_CODEC_ID_PCM_S64BE: case AV_CODEC_ID_PCM_S64LE: return 64; default: return 0; } } enum AVCodecID av_get_pcm_codec(enum AVSampleFormat fmt, int be) { static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = { [AV_SAMPLE_FMT_U8 ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 }, [AV_SAMPLE_FMT_S16 ] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE }, [AV_SAMPLE_FMT_S32 ] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE }, [AV_SAMPLE_FMT_FLT ] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE }, [AV_SAMPLE_FMT_DBL ] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE }, [AV_SAMPLE_FMT_U8P ] = { AV_CODEC_ID_PCM_U8, AV_CODEC_ID_PCM_U8 }, [AV_SAMPLE_FMT_S16P] = { AV_CODEC_ID_PCM_S16LE, AV_CODEC_ID_PCM_S16BE }, [AV_SAMPLE_FMT_S32P] = { AV_CODEC_ID_PCM_S32LE, AV_CODEC_ID_PCM_S32BE }, [AV_SAMPLE_FMT_S64P] = { AV_CODEC_ID_PCM_S64LE, AV_CODEC_ID_PCM_S64BE }, [AV_SAMPLE_FMT_FLTP] = { AV_CODEC_ID_PCM_F32LE, AV_CODEC_ID_PCM_F32BE }, [AV_SAMPLE_FMT_DBLP] = { AV_CODEC_ID_PCM_F64LE, AV_CODEC_ID_PCM_F64BE }, }; if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB) return AV_CODEC_ID_NONE; if (be < 0 || be > 1) be = AV_NE(1, 0); return map[fmt][be]; } 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, int64_t bitrate, uint8_t * extradata, int frame_size, int frame_bytes) { int bps = av_get_exact_bits_per_sample(id); int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1; /* codecs with an exact constant bits per sample */ if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768) return (frame_bytes * 8LL) / (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_EVRC: case AV_CODEC_ID_GSM: case AV_CODEC_ID_QCELP: case AV_CODEC_ID_RA_288: return 160; 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 * framecount; case AV_CODEC_ID_ATRAC3P: return 2048; 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; else if (id == AV_CODEC_ID_DST) return 588 * sr / 44100; 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 (id == AV_CODEC_ID_RA_144) return 160 * (frame_bytes / 20); if (id == AV_CODEC_ID_G723_1) return 240 * (frame_bytes / 24); if (bps > 0) { /* calc from frame_bytes and bits_per_coded_sample */ if (id == AV_CODEC_ID_ADPCM_G726 || id == AV_CODEC_ID_ADPCM_G726LE) return frame_bytes * 8 / bps; } if (ch > 0 && ch < INT_MAX/16) { /* calc from frame_bytes and channels */ switch (id) { case AV_CODEC_ID_ADPCM_AFC: return frame_bytes / (9 * ch) * 16; case AV_CODEC_ID_ADPCM_PSX: case AV_CODEC_ID_ADPCM_DTK: return frame_bytes / (16 * ch) * 28; case AV_CODEC_ID_ADPCM_4XM: case AV_CODEC_ID_ADPCM_IMA_DAT4: 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_THP: case AV_CODEC_ID_ADPCM_THP_LE: if (extradata) return frame_bytes * 14 / (8 * ch); break; 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)); case AV_CODEC_ID_IAC: case AV_CODEC_ID_IMC: return 4 * frame_bytes / 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: if (bps < 2 || bps > 5) return 0; return blocks * (1 + (ba - 4 * ch) / (bps * 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_IMA_RAD: return blocks * ((ba - 4 * ch) * 2 / ch); case AV_CODEC_ID_ADPCM_MS: return blocks * (2 + (ba - 7 * ch) * 2 / ch); case AV_CODEC_ID_ADPCM_MTAF: return blocks * (ba - 16) * 2 / ch; } } if (bps > 0) { /* calc from frame_bytes, channels, and bits_per_coded_sample */ switch (id) { case AV_CODEC_ID_PCM_DVD: if(bps<4) return 0; return 2 * (frame_bytes / ((bps * 2 / 8) * ch)); case AV_CODEC_ID_PCM_BLURAY: if(bps<4) return 0; return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8); case AV_CODEC_ID_S302M: return 2 * (frame_bytes / ((bps + 4) / 4)) / ch; } } } } /* Fall back on using frame_size */ if (frame_size > 1 && frame_bytes) return frame_size; //For WMA we currently have no other means to calculate duration thus we //do it here by assuming CBR, which is true for all known cases. if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) { if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2) return (frame_bytes * 8LL * sr) / bitrate; } 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, avctx->bit_rate, avctx->extradata, avctx->frame_size, 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, par->bit_rate, par->extradata, par->frame_size, 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; static AVHWAccel **last_hwaccel = &first_hwaccel; void av_register_hwaccel(AVHWAccel *hwaccel) { AVHWAccel **p = last_hwaccel; hwaccel->next = NULL; while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel)) p = &(*p)->next; last_hwaccel = &hwaccel->next; } 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 ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec) { if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init) return 0; if (lockmgr_cb) { if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_OBTAIN)) return -1; } if (avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, 1) != 1) { av_log(log_ctx, AV_LOG_ERROR, "Insufficient thread locking. At least %d threads are " "calling avcodec_open2() at the same time right now.\n", entangled_thread_counter); if (!lockmgr_cb) av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n"); ff_avcodec_locked = 1; ff_unlock_avcodec(codec); return AVERROR(EINVAL); } av_assert0(!ff_avcodec_locked); ff_avcodec_locked = 1; return 0; } int ff_unlock_avcodec(const AVCodec *codec) { if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init) return 0; av_assert0(ff_avcodec_locked); ff_avcodec_locked = 0; avpriv_atomic_int_add_and_fetch(&entangled_thread_counter, -1); if (lockmgr_cb) { if ((*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE)) return -1; } 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) + ((unsigned)av_toupper((x >> 24) & 0xFF) << 24); } int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src) { int ret; dst->owner[0] = src->owner[0]; dst->owner[1] = src->owner[1]; ret = av_frame_ref(dst->f, src->f); if (ret < 0) return ret; av_assert0(!dst->progress); if (src->progress && !(dst->progress = av_buffer_ref(src->progress))) { ff_thread_release_buffer(dst->owner[0], dst); return AVERROR(ENOMEM); } return 0; } #if !HAVE_THREADS enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt) { return ff_get_format(avctx, fmt); } int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags) { f->owner[0] = f->owner[1] = 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) { } int ff_thread_can_start_frame(AVCodecContext *avctx) { return 1; } int ff_alloc_entries(AVCodecContext *avctx, int count) { return 0; } void ff_reset_entries(AVCodecContext *avctx) { } void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift) { } void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n) { } #endif int avcodec_is_open(AVCodecContext *s) { return !!s->internal; } int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf) { int ret; char *str; ret = av_bprint_finalize(buf, &str); if (ret < 0) return ret; if (!av_bprint_is_complete(buf)) { av_free(str); return AVERROR(ENOMEM); } avctx->extradata = str; /* Note: the string is NUL terminated (so extradata can be read as a * string), but the ending character is not accounted in the size (in * binary formats you are likely not supposed to mux that character). When * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE * zeros. */ avctx->extradata_size = buf->len; return 0; } const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p, const uint8_t *end, uint32_t *av_restrict state) { int i; av_assert0(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 }; par->profile = FF_PROFILE_UNKNOWN; par->level = FF_LEVEL_UNKNOWN; } 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->bits_per_raw_sample = codec->bits_per_raw_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; par->video_delay = codec->has_b_frames; 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->frame_size = codec->frame_size; par->initial_padding = codec->initial_padding; par->trailing_padding = codec->trailing_padding; par->seek_preroll = codec->seek_preroll; break; case AVMEDIA_TYPE_SUBTITLE: par->width = codec->width; par->height = codec->height; 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->bits_per_raw_sample = par->bits_per_raw_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; codec->has_b_frames = par->video_delay; 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->frame_size = par->frame_size; codec->delay = codec->initial_padding = par->initial_padding; codec->trailing_padding = par->trailing_padding; codec->seek_preroll = par->seek_preroll; break; case AVMEDIA_TYPE_SUBTITLE: codec->width = par->width; codec->height = par->height; 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; } int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len, void **data, size_t *sei_size) { AVFrameSideData *side_data = NULL; uint8_t *sei_data; if (frame) side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC); if (!side_data) { *data = NULL; return 0; } *sei_size = side_data->size + 11; *data = av_mallocz(*sei_size + prefix_len); if (!*data) return AVERROR(ENOMEM); sei_data = (uint8_t*)*data + prefix_len; // country code sei_data[0] = 181; sei_data[1] = 0; sei_data[2] = 49; /** * 'GA94' is standard in North America for ATSC, but hard coding * this style may not be the right thing to do -- other formats * do exist. This information is not available in the side_data * so we are going with this right now. */ AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4')); sei_data[7] = 3; sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40; sei_data[9] = 0; memcpy(sei_data + 10, side_data->data, side_data->size); sei_data[side_data->size+10] = 255; return 0; } int64_t ff_guess_coded_bitrate(AVCodecContext *avctx) { AVRational framerate = avctx->framerate; int bits_per_coded_sample = avctx->bits_per_coded_sample; int64_t bitrate; if (!(framerate.num && framerate.den)) framerate = av_inv_q(avctx->time_base); if (!(framerate.num && framerate.den)) return 0; if (!bits_per_coded_sample) { const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt); bits_per_coded_sample = av_get_bits_per_pixel(desc); } bitrate = (int64_t)bits_per_coded_sample * avctx->width * avctx->height * framerate.num / framerate.den; return bitrate; }