/* * Apple HTTP Live Streaming segmenter * Copyright (c) 2012, Luca Barbato * Copyright (c) 2017 Akamai Technologies, Inc. * * 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 */ #include "config.h" #include <float.h> #include <stdint.h> #if HAVE_UNISTD_H #include <unistd.h> #endif #if CONFIG_GCRYPT #include <gcrypt.h> #elif CONFIG_OPENSSL #include <openssl/rand.h> #endif #include "libavutil/avassert.h" #include "libavutil/mathematics.h" #include "libavutil/parseutils.h" #include "libavutil/avstring.h" #include "libavutil/intreadwrite.h" #include "libavutil/random_seed.h" #include "libavutil/opt.h" #include "libavutil/log.h" #include "libavutil/time_internal.h" #include "avformat.h" #include "avio_internal.h" #if CONFIG_HTTP_PROTOCOL #include "http.h" #endif #include "hlsplaylist.h" #include "internal.h" #include "os_support.h" typedef enum { HLS_START_SEQUENCE_AS_START_NUMBER = 0, HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH = 1, HLS_START_SEQUENCE_AS_FORMATTED_DATETIME = 2, // YYYYMMDDhhmmss } StartSequenceSourceType; typedef enum { CODEC_ATTRIBUTE_WRITTEN = 0, CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN, } CodecAttributeStatus; #define KEYSIZE 16 #define LINE_BUFFER_SIZE 1024 #define HLS_MICROSECOND_UNIT 1000000 #define POSTFIX_PATTERN "_%d" typedef struct HLSSegment { char filename[1024]; char sub_filename[1024]; double duration; /* in seconds */ int discont; int64_t pos; int64_t size; unsigned var_stream_idx; char key_uri[LINE_BUFFER_SIZE + 1]; char iv_string[KEYSIZE*2 + 1]; struct HLSSegment *next; } HLSSegment; typedef enum HLSFlags { // Generate a single media file and use byte ranges in the playlist. HLS_SINGLE_FILE = (1 << 0), HLS_DELETE_SEGMENTS = (1 << 1), HLS_ROUND_DURATIONS = (1 << 2), HLS_DISCONT_START = (1 << 3), HLS_OMIT_ENDLIST = (1 << 4), HLS_SPLIT_BY_TIME = (1 << 5), HLS_APPEND_LIST = (1 << 6), HLS_PROGRAM_DATE_TIME = (1 << 7), HLS_SECOND_LEVEL_SEGMENT_INDEX = (1 << 8), // include segment index in segment filenames when use_localtime e.g.: %%03d HLS_SECOND_LEVEL_SEGMENT_DURATION = (1 << 9), // include segment duration (microsec) in segment filenames when use_localtime e.g.: %%09t HLS_SECOND_LEVEL_SEGMENT_SIZE = (1 << 10), // include segment size (bytes) in segment filenames when use_localtime e.g.: %%014s HLS_TEMP_FILE = (1 << 11), HLS_PERIODIC_REKEY = (1 << 12), HLS_INDEPENDENT_SEGMENTS = (1 << 13), } HLSFlags; typedef enum { SEGMENT_TYPE_MPEGTS, SEGMENT_TYPE_FMP4, } SegmentType; typedef struct VariantStream { unsigned var_stream_idx; unsigned number; int64_t sequence; AVOutputFormat *oformat; AVOutputFormat *vtt_oformat; AVIOContext *out; int packets_written; int init_range_length; AVFormatContext *avf; AVFormatContext *vtt_avf; int has_video; int has_subtitle; int new_start; double dpp; // duration per packet int64_t start_pts; int64_t end_pts; double duration; // last segment duration computed so far, in seconds int64_t start_pos; // last segment starting position int64_t size; // last segment size int nb_entries; int discontinuity_set; int discontinuity; int reference_stream_index; HLSSegment *segments; HLSSegment *last_segment; HLSSegment *old_segments; char *basename; char *vtt_basename; char *vtt_m3u8_name; char *m3u8_name; double initial_prog_date_time; char current_segment_final_filename_fmt[1024]; // when renaming segments char *fmp4_init_filename; char *base_output_dirname; int fmp4_init_mode; AVStream **streams; char codec_attr[128]; CodecAttributeStatus attr_status; unsigned int nb_streams; int m3u8_created; /* status of media play-list creation */ char *agroup; /* audio group name */ char *ccgroup; /* closed caption group name */ char *baseurl; } VariantStream; typedef struct ClosedCaptionsStream { char *ccgroup; /* closed caption group name */ char *instreamid; /* closed captions INSTREAM-ID */ char *language; /* closed captions langauge */ } ClosedCaptionsStream; typedef struct HLSContext { const AVClass *class; // Class for private options. int64_t start_sequence; uint32_t start_sequence_source_type; // enum StartSequenceSourceType float time; // Set by a private option. float init_time; // Set by a private option. int max_nb_segments; // Set by a private option. int hls_delete_threshold; // Set by a private option. #if FF_API_HLS_WRAP int wrap; // Set by a private option. #endif uint32_t flags; // enum HLSFlags uint32_t pl_type; // enum PlaylistType char *segment_filename; char *fmp4_init_filename; int segment_type; int use_localtime; ///< flag to expand filename with localtime int use_localtime_mkdir;///< flag to mkdir dirname in timebased filename int allowcache; int64_t recording_time; int64_t max_seg_size; // every segment file max size char *baseurl; char *format_options_str; char *vtt_format_options_str; char *subtitle_filename; AVDictionary *format_options; int encrypt; char *key; char *key_url; char *iv; char *key_basename; int encrypt_started; char *key_info_file; char key_file[LINE_BUFFER_SIZE + 1]; char key_uri[LINE_BUFFER_SIZE + 1]; char key_string[KEYSIZE*2 + 1]; char iv_string[KEYSIZE*2 + 1]; AVDictionary *vtt_format_options; char *method; char *user_agent; VariantStream *var_streams; unsigned int nb_varstreams; ClosedCaptionsStream *cc_streams; unsigned int nb_ccstreams; int master_m3u8_created; /* status of master play-list creation */ char *master_m3u8_url; /* URL of the master m3u8 file */ int version; /* HLS version */ char *var_stream_map; /* user specified variant stream map string */ char *cc_stream_map; /* user specified closed caption streams map string */ char *master_pl_name; unsigned int master_publish_rate; int http_persistent; AVIOContext *m3u8_out; AVIOContext *sub_m3u8_out; int64_t timeout; } HLSContext; static int hlsenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename, AVDictionary **options) { HLSContext *hls = s->priv_data; int http_base_proto = filename ? ff_is_http_proto(filename) : 0; int err = AVERROR_MUXER_NOT_FOUND; if (!*pb || !http_base_proto || !hls->http_persistent) { err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options); #if CONFIG_HTTP_PROTOCOL } else { URLContext *http_url_context = ffio_geturlcontext(*pb); av_assert0(http_url_context); err = ff_http_do_new_request(http_url_context, filename); #endif } return err; } static void hlsenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) { HLSContext *hls = s->priv_data; int http_base_proto = filename ? ff_is_http_proto(filename) : 0; if (!http_base_proto || !hls->http_persistent || hls->key_info_file || hls->encrypt) { ff_format_io_close(s, pb); #if CONFIG_HTTP_PROTOCOL } else { URLContext *http_url_context = ffio_geturlcontext(*pb); av_assert0(http_url_context); avio_flush(*pb); ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE); #endif } } static void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c) { int http_base_proto = ff_is_http_proto(s->url); if (c->method) { av_dict_set(options, "method", c->method, 0); } else if (http_base_proto) { av_log(c, AV_LOG_WARNING, "No HTTP method set, hls muxer defaulting to method PUT.\n"); av_dict_set(options, "method", "PUT", 0); } if (c->user_agent) av_dict_set(options, "user_agent", c->user_agent, 0); if (c->http_persistent) av_dict_set_int(options, "multiple_requests", 1, 0); if (c->timeout >= 0) av_dict_set_int(options, "timeout", c->timeout, 0); } static void write_codec_attr(AVStream *st, VariantStream *vs) { int codec_strlen = strlen(vs->codec_attr); char attr[32]; if (st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) return; if (vs->attr_status == CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN) return; if (st->codecpar->codec_id == AV_CODEC_ID_H264) { uint8_t *data = st->codecpar->extradata; if (data && (data[0] | data[1] | data[2]) == 0 && data[3] == 1 && (data[4] & 0x1F) == 7) { snprintf(attr, sizeof(attr), "avc1.%02x%02x%02x", data[5], data[6], data[7]); } else { goto fail; } } else if (st->codecpar->codec_id == AV_CODEC_ID_MP2) { snprintf(attr, sizeof(attr), "mp4a.40.33"); } else if (st->codecpar->codec_id == AV_CODEC_ID_MP3) { snprintf(attr, sizeof(attr), "mp4a.40.34"); } else if (st->codecpar->codec_id == AV_CODEC_ID_AAC) { /* TODO : For HE-AAC, HE-AACv2, the last digit needs to be set to 5 and 29 respectively */ snprintf(attr, sizeof(attr), "mp4a.40.2"); } else if (st->codecpar->codec_id == AV_CODEC_ID_AC3) { snprintf(attr, sizeof(attr), "ac-3"); } else if (st->codecpar->codec_id == AV_CODEC_ID_EAC3) { snprintf(attr, sizeof(attr), "ec-3"); } else { goto fail; } // Don't write the same attribute multiple times if (!av_stristr(vs->codec_attr, attr)) { snprintf(vs->codec_attr + codec_strlen, sizeof(vs->codec_attr) - codec_strlen, "%s%s", codec_strlen ? "," : "", attr); } return; fail: vs->codec_attr[0] = '\0'; vs->attr_status = CODEC_ATTRIBUTE_WILL_NOT_BE_WRITTEN; return; } static int replace_int_data_in_filename(char **s, const char *filename, char placeholder, int64_t number) { const char *p; char *new_filename; char c; int nd, addchar_count; int found_count = 0; AVBPrint buf; av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED); p = filename; for (;;) { c = *p; if (c == '\0') break; if (c == '%' && *(p+1) == '%') // %% addchar_count = 2; else if (c == '%' && (av_isdigit(*(p+1)) || *(p+1) == placeholder)) { nd = 0; addchar_count = 1; while (av_isdigit(*(p + addchar_count))) { nd = nd * 10 + *(p + addchar_count) - '0'; addchar_count++; } if (*(p + addchar_count) == placeholder) { av_bprintf(&buf, "%0*"PRId64, (number < 0) ? nd : nd++, number); p += (addchar_count + 1); addchar_count = 0; found_count++; } } else addchar_count = 1; av_bprint_append_data(&buf, p, addchar_count); p += addchar_count; } if (!av_bprint_is_complete(&buf)) { av_bprint_finalize(&buf, NULL); return -1; } if (av_bprint_finalize(&buf, &new_filename) < 0 || !new_filename) return -1; *s = new_filename; return found_count; } static void write_styp(AVIOContext *pb) { avio_wb32(pb, 24); ffio_wfourcc(pb, "styp"); ffio_wfourcc(pb, "msdh"); avio_wb32(pb, 0); /* minor */ ffio_wfourcc(pb, "msdh"); ffio_wfourcc(pb, "msix"); } static int flush_dynbuf(VariantStream *vs, int *range_length) { AVFormatContext *ctx = vs->avf; uint8_t *buffer; if (!ctx->pb) { return AVERROR(EINVAL); } // flush av_write_frame(ctx, NULL); avio_flush(ctx->pb); // write out to file *range_length = avio_close_dyn_buf(ctx->pb, &buffer); ctx->pb = NULL; avio_write(vs->out, buffer, *range_length); av_free(buffer); // re-open buffer return avio_open_dyn_buf(&ctx->pb); } static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls, VariantStream *vs) { HLSSegment *segment, *previous_segment = NULL; float playlist_duration = 0.0f; int ret = 0, path_size, sub_path_size; int segment_cnt = 0; char *dirname = NULL, *p, *sub_path; char *path = NULL; AVDictionary *options = NULL; AVIOContext *out = NULL; const char *proto = NULL; segment = vs->segments; while (segment) { playlist_duration += segment->duration; segment = segment->next; } segment = vs->old_segments; segment_cnt = 0; while (segment) { playlist_duration -= segment->duration; previous_segment = segment; segment = previous_segment->next; segment_cnt++; if (playlist_duration <= -previous_segment->duration) { previous_segment->next = NULL; break; } if (segment_cnt >= hls->hls_delete_threshold) { previous_segment->next = NULL; break; } } if (segment && !hls->use_localtime_mkdir) { if (hls->segment_filename) { dirname = av_strdup(hls->segment_filename); } else { dirname = av_strdup(vs->avf->url); } if (!dirname) { ret = AVERROR(ENOMEM); goto fail; } p = (char *)av_basename(dirname); *p = '\0'; } while (segment) { char * r_dirname = dirname; /* if %v is present in the file's directory */ if (av_stristr(dirname, "%v")) { if (replace_int_data_in_filename(&r_dirname, dirname, 'v', segment->var_stream_idx) < 1) { ret = AVERROR(EINVAL); goto fail; } av_free(dirname); dirname = r_dirname; } av_log(hls, AV_LOG_DEBUG, "deleting old segment %s\n", segment->filename); path_size = (hls->use_localtime_mkdir ? 0 : strlen(dirname)) + strlen(segment->filename) + 1; path = av_malloc(path_size); if (!path) { ret = AVERROR(ENOMEM); goto fail; } if (hls->use_localtime_mkdir) av_strlcpy(path, segment->filename, path_size); else { // segment->filename contains basename only av_strlcpy(path, dirname, path_size); av_strlcat(path, segment->filename, path_size); } proto = avio_find_protocol_name(s->url); if (hls->method || (proto && !av_strcasecmp(proto, "http"))) { av_dict_set(&options, "method", "DELETE", 0); if ((ret = vs->avf->io_open(vs->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0) goto fail; ff_format_io_close(vs->avf, &out); } else if (unlink(path) < 0) { av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n", path, strerror(errno)); } if ((segment->sub_filename[0] != '\0')) { sub_path_size = strlen(segment->sub_filename) + 1 + (dirname ? strlen(dirname) : 0); sub_path = av_malloc(sub_path_size); if (!sub_path) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(sub_path, dirname, sub_path_size); av_strlcat(sub_path, segment->sub_filename, sub_path_size); if (hls->method || (proto && !av_strcasecmp(proto, "http"))) { av_dict_set(&options, "method", "DELETE", 0); if ((ret = vs->avf->io_open(vs->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) { av_free(sub_path); goto fail; } ff_format_io_close(vs->avf, &out); } else if (unlink(sub_path) < 0) { av_log(hls, AV_LOG_ERROR, "failed to delete old segment %s: %s\n", sub_path, strerror(errno)); } av_free(sub_path); } av_freep(&path); previous_segment = segment; segment = previous_segment->next; av_free(previous_segment); } fail: av_free(path); av_free(dirname); return ret; } static int randomize(uint8_t *buf, int len) { #if CONFIG_GCRYPT gcry_randomize(buf, len, GCRY_VERY_STRONG_RANDOM); return 0; #elif CONFIG_OPENSSL if (RAND_bytes(buf, len)) return 0; #else return AVERROR(ENOSYS); #endif return AVERROR(EINVAL); } static int do_encrypt(AVFormatContext *s, VariantStream *vs) { HLSContext *hls = s->priv_data; int ret; int len; AVIOContext *pb; uint8_t key[KEYSIZE]; len = strlen(s->url) + 4 + 1; hls->key_basename = av_mallocz(len); if (!hls->key_basename) return AVERROR(ENOMEM); av_strlcpy(hls->key_basename, s->url, len); av_strlcat(hls->key_basename, ".key", len); if (hls->key_url) { av_strlcpy(hls->key_file, hls->key_url, sizeof(hls->key_file)); av_strlcpy(hls->key_uri, hls->key_url, sizeof(hls->key_uri)); } else { av_strlcpy(hls->key_file, hls->key_basename, sizeof(hls->key_file)); av_strlcpy(hls->key_uri, hls->key_basename, sizeof(hls->key_uri)); } if (!*hls->iv_string) { uint8_t iv[16] = { 0 }; char buf[33]; if (!hls->iv) { AV_WB64(iv + 8, vs->sequence); } else { memcpy(iv, hls->iv, sizeof(iv)); } ff_data_to_hex(buf, iv, sizeof(iv), 0); buf[32] = '\0'; memcpy(hls->iv_string, buf, sizeof(hls->iv_string)); } if (!*hls->key_uri) { av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n"); return AVERROR(EINVAL); } if (!*hls->key_file) { av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n"); return AVERROR(EINVAL); } if (!*hls->key_string) { if (!hls->key) { if ((ret = randomize(key, sizeof(key))) < 0) { av_log(s, AV_LOG_ERROR, "Cannot generate a strong random key\n"); return ret; } } else { memcpy(key, hls->key, sizeof(key)); } ff_data_to_hex(hls->key_string, key, sizeof(key), 0); if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_WRITE, NULL)) < 0) return ret; avio_seek(pb, 0, SEEK_CUR); avio_write(pb, key, KEYSIZE); avio_close(pb); } return 0; } static int hls_encryption_start(AVFormatContext *s) { HLSContext *hls = s->priv_data; int ret; AVIOContext *pb; uint8_t key[KEYSIZE]; if ((ret = s->io_open(s, &pb, hls->key_info_file, AVIO_FLAG_READ, NULL)) < 0) { av_log(hls, AV_LOG_ERROR, "error opening key info file %s\n", hls->key_info_file); return ret; } ff_get_line(pb, hls->key_uri, sizeof(hls->key_uri)); hls->key_uri[strcspn(hls->key_uri, "\r\n")] = '\0'; ff_get_line(pb, hls->key_file, sizeof(hls->key_file)); hls->key_file[strcspn(hls->key_file, "\r\n")] = '\0'; ff_get_line(pb, hls->iv_string, sizeof(hls->iv_string)); hls->iv_string[strcspn(hls->iv_string, "\r\n")] = '\0'; ff_format_io_close(s, &pb); if (!*hls->key_uri) { av_log(hls, AV_LOG_ERROR, "no key URI specified in key info file\n"); return AVERROR(EINVAL); } if (!*hls->key_file) { av_log(hls, AV_LOG_ERROR, "no key file specified in key info file\n"); return AVERROR(EINVAL); } if ((ret = s->io_open(s, &pb, hls->key_file, AVIO_FLAG_READ, NULL)) < 0) { av_log(hls, AV_LOG_ERROR, "error opening key file %s\n", hls->key_file); return ret; } ret = avio_read(pb, key, sizeof(key)); ff_format_io_close(s, &pb); if (ret != sizeof(key)) { av_log(hls, AV_LOG_ERROR, "error reading key file %s\n", hls->key_file); if (ret >= 0 || ret == AVERROR_EOF) ret = AVERROR(EINVAL); return ret; } ff_data_to_hex(hls->key_string, key, sizeof(key), 0); return 0; } static int hls_mux_init(AVFormatContext *s, VariantStream *vs) { AVDictionary *options = NULL; HLSContext *hls = s->priv_data; AVFormatContext *oc; AVFormatContext *vtt_oc = NULL; int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0); int i, ret; ret = avformat_alloc_output_context2(&vs->avf, vs->oformat, NULL, NULL); if (ret < 0) return ret; oc = vs->avf; oc->url = av_strdup(""); if (!oc->url) return AVERROR(ENOMEM); oc->oformat = vs->oformat; oc->interrupt_callback = s->interrupt_callback; oc->max_delay = s->max_delay; oc->opaque = s->opaque; oc->io_open = s->io_open; oc->io_close = s->io_close; av_dict_copy(&oc->metadata, s->metadata, 0); if(vs->vtt_oformat) { ret = avformat_alloc_output_context2(&vs->vtt_avf, vs->vtt_oformat, NULL, NULL); if (ret < 0) return ret; vtt_oc = vs->vtt_avf; vtt_oc->oformat = vs->vtt_oformat; av_dict_copy(&vtt_oc->metadata, s->metadata, 0); } for (i = 0; i < vs->nb_streams; i++) { AVStream *st; AVFormatContext *loc; if (vs->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) loc = vtt_oc; else loc = oc; if (!(st = avformat_new_stream(loc, NULL))) return AVERROR(ENOMEM); avcodec_parameters_copy(st->codecpar, vs->streams[i]->codecpar); if (!oc->oformat->codec_tag || av_codec_get_id (oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_tag) == st->codecpar->codec_id || av_codec_get_tag(oc->oformat->codec_tag, vs->streams[i]->codecpar->codec_id) <= 0) { st->codecpar->codec_tag = vs->streams[i]->codecpar->codec_tag; } else { st->codecpar->codec_tag = 0; } st->sample_aspect_ratio = vs->streams[i]->sample_aspect_ratio; st->time_base = vs->streams[i]->time_base; av_dict_copy(&st->metadata, vs->streams[i]->metadata, 0); } vs->packets_written = 1; vs->start_pos = 0; vs->new_start = 1; vs->fmp4_init_mode = 0; if (hls->segment_type == SEGMENT_TYPE_FMP4) { if (hls->max_seg_size > 0) { av_log(s, AV_LOG_WARNING, "Multi-file byterange mode is currently unsupported in the HLS muxer.\n"); return AVERROR_PATCHWELCOME; } vs->packets_written = 0; vs->init_range_length = 0; vs->fmp4_init_mode = !byterange_mode; set_http_options(s, &options, hls); if ((ret = avio_open_dyn_buf(&oc->pb)) < 0) return ret; if (byterange_mode) { ret = hlsenc_io_open(s, &vs->out, vs->basename, &options); } else { ret = hlsenc_io_open(s, &vs->out, vs->base_output_dirname, &options); } av_dict_free(&options); if (ret < 0) { av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", vs->fmp4_init_filename); return ret; } if (hls->format_options_str) { ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0); if (ret < 0) { av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str); return ret; } } av_dict_copy(&options, hls->format_options, 0); av_dict_set(&options, "fflags", "-autobsf", 0); av_dict_set(&options, "movflags", "frag_custom+dash+delay_moov", 0); ret = avformat_init_output(oc, &options); if (ret < 0) return ret; if (av_dict_count(options)) { av_log(s, AV_LOG_ERROR, "Some of the provided format options in '%s' are not recognized\n", hls->format_options_str); av_dict_free(&options); return AVERROR(EINVAL); } avio_flush(oc->pb); av_dict_free(&options); } return 0; } static HLSSegment *find_segment_by_filename(HLSSegment *segment, const char *filename) { while (segment) { if (!av_strcasecmp(segment->filename,filename)) return segment; segment = segment->next; } return (HLSSegment *) NULL; } static int sls_flags_filename_process(struct AVFormatContext *s, HLSContext *hls, VariantStream *vs, HLSSegment *en, double duration, int64_t pos, int64_t size) { if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) && strlen(vs->current_segment_final_filename_fmt)) { char * new_url = av_strdup(vs->current_segment_final_filename_fmt); if (!new_url) { av_free(en); return AVERROR(ENOMEM); } ff_format_set_url(vs->avf, new_url); if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) { char *filename = NULL; if (replace_int_data_in_filename(&filename, vs->avf->url, 's', pos + size) < 1) { av_log(hls, AV_LOG_ERROR, "Invalid second level segment filename template '%s', " "you can try to remove second_level_segment_size flag\n", vs->avf->url); av_free(filename); av_free(en); return AVERROR(EINVAL); } ff_format_set_url(vs->avf, filename); } if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) { char *filename = NULL; if (replace_int_data_in_filename(&filename, vs->avf->url, 't', (int64_t)round(duration * HLS_MICROSECOND_UNIT)) < 1) { av_log(hls, AV_LOG_ERROR, "Invalid second level segment filename template '%s', " "you can try to remove second_level_segment_time flag\n", vs->avf->url); av_free(filename); av_free(en); return AVERROR(EINVAL); } ff_format_set_url(vs->avf, filename); } } return 0; } static int sls_flag_check_duration_size_index(HLSContext *hls) { int ret = 0; if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) { av_log(hls, AV_LOG_ERROR, "second_level_segment_duration hls_flag requires strftime to be true\n"); ret = AVERROR(EINVAL); } if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) { av_log(hls, AV_LOG_ERROR, "second_level_segment_size hls_flag requires strfime to be true\n"); ret = AVERROR(EINVAL); } if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) { av_log(hls, AV_LOG_ERROR, "second_level_segment_index hls_flag requires strftime to be true\n"); ret = AVERROR(EINVAL); } return ret; } static int sls_flag_check_duration_size(HLSContext *hls, VariantStream *vs) { const char *proto = avio_find_protocol_name(vs->basename); int segment_renaming_ok = proto && !strcmp(proto, "file"); int ret = 0; if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) && !segment_renaming_ok) { av_log(hls, AV_LOG_ERROR, "second_level_segment_duration hls_flag works only with file protocol segment names\n"); ret = AVERROR(EINVAL); } if ((hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) && !segment_renaming_ok) { av_log(hls, AV_LOG_ERROR, "second_level_segment_size hls_flag works only with file protocol segment names\n"); ret = AVERROR(EINVAL); } return ret; } static void sls_flag_file_rename(HLSContext *hls, VariantStream *vs, char *old_filename) { if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) && strlen(vs->current_segment_final_filename_fmt)) { ff_rename(old_filename, vs->avf->url, hls); } } static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c, VariantStream *vs) { if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) { char *filename = NULL; if (replace_int_data_in_filename(&filename, #if FF_API_HLS_WRAP oc->url, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) { #else oc->url, 'd', vs->sequence) < 1) { #endif av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', " "you can try to remove second_level_segment_index flag\n", oc->url); av_free(filename); return AVERROR(EINVAL); } ff_format_set_url(oc, filename); } if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) { av_strlcpy(vs->current_segment_final_filename_fmt, oc->url, sizeof(vs->current_segment_final_filename_fmt)); if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) { char *filename = NULL; if (replace_int_data_in_filename(&filename, oc->url, 's', 0) < 1) { av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', " "you can try to remove second_level_segment_size flag\n", oc->url); av_free(filename); return AVERROR(EINVAL); } ff_format_set_url(oc, filename); } if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) { char *filename = NULL; if (replace_int_data_in_filename(&filename, oc->url, 't', 0) < 1) { av_log(c, AV_LOG_ERROR, "Invalid second level segment filename template '%s', " "you can try to remove second_level_segment_time flag\n", oc->url); av_free(filename); return AVERROR(EINVAL); } ff_format_set_url(oc, filename); } } return 0; } /* Create a new segment and append it to the segment list */ static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, VariantStream *vs, double duration, int64_t pos, int64_t size) { HLSSegment *en = av_malloc(sizeof(*en)); const char *filename; int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0); int ret; if (!en) return AVERROR(ENOMEM); en->var_stream_idx = vs->var_stream_idx; ret = sls_flags_filename_process(s, hls, vs, en, duration, pos, size); if (ret < 0) { return ret; } filename = av_basename(vs->avf->url); if (hls->use_localtime_mkdir) { filename = vs->avf->url; } if ((find_segment_by_filename(vs->segments, filename) || find_segment_by_filename(vs->old_segments, filename)) && !byterange_mode) { av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename); } av_strlcpy(en->filename, filename, sizeof(en->filename)); if(vs->has_subtitle) av_strlcpy(en->sub_filename, av_basename(vs->vtt_avf->url), sizeof(en->sub_filename)); else en->sub_filename[0] = '\0'; en->duration = duration; en->pos = pos; en->size = size; en->next = NULL; en->discont = 0; if (vs->discontinuity) { en->discont = 1; vs->discontinuity = 0; } if (hls->key_info_file || hls->encrypt) { av_strlcpy(en->key_uri, hls->key_uri, sizeof(en->key_uri)); av_strlcpy(en->iv_string, hls->iv_string, sizeof(en->iv_string)); } if (!vs->segments) vs->segments = en; else vs->last_segment->next = en; vs->last_segment = en; // EVENT or VOD playlists imply sliding window cannot be used if (hls->pl_type != PLAYLIST_TYPE_NONE) hls->max_nb_segments = 0; if (hls->max_nb_segments && vs->nb_entries >= hls->max_nb_segments) { en = vs->segments; vs->initial_prog_date_time += en->duration; vs->segments = en->next; if (en && hls->flags & HLS_DELETE_SEGMENTS && #if FF_API_HLS_WRAP !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) { #else !(hls->flags & HLS_SINGLE_FILE)) { #endif en->next = vs->old_segments; vs->old_segments = en; if ((ret = hls_delete_old_segments(s, hls, vs)) < 0) return ret; } else av_free(en); } else vs->nb_entries++; if (hls->max_seg_size > 0) { return 0; } vs->sequence++; return 0; } static int parse_playlist(AVFormatContext *s, const char *url, VariantStream *vs) { HLSContext *hls = s->priv_data; AVIOContext *in; int ret = 0, is_segment = 0; int64_t new_start_pos; char line[1024]; const char *ptr; const char *end; if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ, &s->interrupt_callback, NULL, s->protocol_whitelist, s->protocol_blacklist)) < 0) return ret; ff_get_chomp_line(in, line, sizeof(line)); if (strcmp(line, "#EXTM3U")) { ret = AVERROR_INVALIDDATA; goto fail; } vs->discontinuity = 0; while (!avio_feof(in)) { ff_get_chomp_line(in, line, sizeof(line)); if (av_strstart(line, "#EXT-X-MEDIA-SEQUENCE:", &ptr)) { int64_t tmp_sequence = strtoll(ptr, NULL, 10); if (tmp_sequence < vs->sequence) av_log(hls, AV_LOG_VERBOSE, "Found playlist sequence number was smaller """ "than specified start sequence number: %"PRId64" < %"PRId64", " "omitting\n", tmp_sequence, hls->start_sequence); else { av_log(hls, AV_LOG_DEBUG, "Found playlist sequence number: %"PRId64"\n", tmp_sequence); vs->sequence = tmp_sequence; } } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) { is_segment = 1; vs->discontinuity = 1; } else if (av_strstart(line, "#EXTINF:", &ptr)) { is_segment = 1; vs->duration = atof(ptr); } else if (av_stristart(line, "#EXT-X-KEY:", &ptr)) { ptr = av_stristr(line, "URI=\""); if (ptr) { ptr += strlen("URI=\""); end = av_stristr(ptr, ","); if (end) { av_strlcpy(hls->key_uri, ptr, end - ptr); } else { av_strlcpy(hls->key_uri, ptr, sizeof(hls->key_uri)); } } ptr = av_stristr(line, "IV=0x"); if (ptr) { ptr += strlen("IV=0x"); end = av_stristr(ptr, ","); if (end) { av_strlcpy(hls->iv_string, ptr, end - ptr); } else { av_strlcpy(hls->iv_string, ptr, sizeof(hls->iv_string)); } } } else if (av_strstart(line, "#", NULL)) { continue; } else if (line[0]) { if (is_segment) { char *new_file = av_strdup(line); if (!new_file) { ret = AVERROR(ENOMEM); goto fail; } ff_format_set_url(vs->avf, new_file); is_segment = 0; new_start_pos = avio_tell(vs->avf->pb); vs->size = new_start_pos - vs->start_pos; ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size); if (ret < 0) goto fail; vs->start_pos = new_start_pos; } } } fail: avio_close(in); return ret; } static void hls_free_segments(HLSSegment *p) { HLSSegment *en; while(p) { en = p; p = p->next; av_free(en); } } static int hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc) { size_t len = strlen(oc->url); char *final_filename = av_strdup(oc->url); int ret; if (!final_filename) return AVERROR(ENOMEM); final_filename[len-4] = '\0'; ret = ff_rename(oc->url, final_filename, s); oc->url[len-4] = '\0'; av_freep(&final_filename); return ret; } static int get_relative_url(const char *master_url, const char *media_url, char *rel_url, int rel_url_buf_size) { char *p = NULL; int base_len = -1; p = strrchr(master_url, '/') ? strrchr(master_url, '/') :\ strrchr(master_url, '\\'); if (p) { base_len = FFABS(p - master_url); if (av_strncasecmp(master_url, media_url, base_len)) { av_log(NULL, AV_LOG_WARNING, "Unable to find relative url\n"); return AVERROR(EINVAL); } } av_strlcpy(rel_url, &(media_url[base_len + 1]), rel_url_buf_size); return 0; } static int64_t get_stream_bit_rate(AVStream *stream) { AVCPBProperties *props = (AVCPBProperties*)av_stream_get_side_data( stream, AV_PKT_DATA_CPB_PROPERTIES, NULL ); if (stream->codecpar->bit_rate) return stream->codecpar->bit_rate; else if (props) return props->max_bitrate; return 0; } static int create_master_playlist(AVFormatContext *s, VariantStream * const input_vs) { HLSContext *hls = s->priv_data; VariantStream *vs, *temp_vs; AVStream *vid_st, *aud_st; AVDictionary *options = NULL; unsigned int i, j; int m3u8_name_size, ret, bandwidth; char *m3u8_rel_name, *ccgroup; ClosedCaptionsStream *ccs; input_vs->m3u8_created = 1; if (!hls->master_m3u8_created) { /* For the first time, wait until all the media playlists are created */ for (i = 0; i < hls->nb_varstreams; i++) if (!hls->var_streams[i].m3u8_created) return 0; } else { /* Keep publishing the master playlist at the configured rate */ if (&hls->var_streams[0] != input_vs || !hls->master_publish_rate || input_vs->number % hls->master_publish_rate) return 0; } set_http_options(s, &options, hls); ret = hlsenc_io_open(s, &hls->m3u8_out, hls->master_m3u8_url, &options); av_dict_free(&options); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Failed to open master play list file '%s'\n", hls->master_m3u8_url); goto fail; } ff_hls_write_playlist_version(hls->m3u8_out, hls->version); for (i = 0; i < hls->nb_ccstreams; i++) { ccs = &(hls->cc_streams[i]); avio_printf(hls->m3u8_out, "#EXT-X-MEDIA:TYPE=CLOSED-CAPTIONS"); avio_printf(hls->m3u8_out, ",GROUP-ID=\"%s\"", ccs->ccgroup); avio_printf(hls->m3u8_out, ",NAME=\"%s\"", ccs->instreamid); if (ccs->language) avio_printf(hls->m3u8_out, ",LANGUAGE=\"%s\"", ccs->language); avio_printf(hls->m3u8_out, ",INSTREAM-ID=\"%s\"\n", ccs->instreamid); } /* For audio only variant streams add #EXT-X-MEDIA tag with attributes*/ for (i = 0; i < hls->nb_varstreams; i++) { vs = &(hls->var_streams[i]); if (vs->has_video || vs->has_subtitle || !vs->agroup) continue; m3u8_name_size = strlen(vs->m3u8_name) + 1; m3u8_rel_name = av_malloc(m3u8_name_size); if (!m3u8_rel_name) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size); ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name, m3u8_rel_name, m3u8_name_size); if (ret < 0) { av_log(s, AV_LOG_ERROR, "Unable to find relative URL\n"); goto fail; } ff_hls_write_audio_rendition(hls->m3u8_out, vs->agroup, m3u8_rel_name, 0, 1); av_freep(&m3u8_rel_name); } /* For variant streams with video add #EXT-X-STREAM-INF tag with attributes*/ for (i = 0; i < hls->nb_varstreams; i++) { vs = &(hls->var_streams[i]); m3u8_name_size = strlen(vs->m3u8_name) + 1; m3u8_rel_name = av_malloc(m3u8_name_size); if (!m3u8_rel_name) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(m3u8_rel_name, vs->m3u8_name, m3u8_name_size); ret = get_relative_url(hls->master_m3u8_url, vs->m3u8_name, m3u8_rel_name, m3u8_name_size); if (ret < 0) { av_log(NULL, AV_LOG_ERROR, "Unable to find relative URL\n"); goto fail; } vid_st = NULL; aud_st = NULL; for (j = 0; j < vs->nb_streams; j++) { if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) vid_st = vs->streams[j]; else if (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) aud_st = vs->streams[j]; } if (!vid_st && !aud_st) { av_log(NULL, AV_LOG_WARNING, "Media stream not found\n"); continue; } /** * Traverse through the list of audio only rendition streams and find * the rendition which has highest bitrate in the same audio group */ if (vs->agroup) { for (j = 0; j < hls->nb_varstreams; j++) { temp_vs = &(hls->var_streams[j]); if (!temp_vs->has_video && !temp_vs->has_subtitle && temp_vs->agroup && !av_strcasecmp(temp_vs->agroup, vs->agroup)) { if (!aud_st) aud_st = temp_vs->streams[0]; if (temp_vs->streams[0]->codecpar->bit_rate > aud_st->codecpar->bit_rate) aud_st = temp_vs->streams[0]; } } } bandwidth = 0; if (vid_st) bandwidth += get_stream_bit_rate(vid_st); if (aud_st) bandwidth += get_stream_bit_rate(aud_st); bandwidth += bandwidth / 10; ccgroup = NULL; if (vid_st && vs->ccgroup) { /* check if this group name is available in the cc map string */ for (j = 0; j < hls->nb_ccstreams; j++) { ccs = &(hls->cc_streams[j]); if (!av_strcasecmp(ccs->ccgroup, vs->ccgroup)) { ccgroup = vs->ccgroup; break; } } if (j == hls->nb_ccstreams) av_log(NULL, AV_LOG_WARNING, "mapping ccgroup %s not found\n", vs->ccgroup); } ff_hls_write_stream_info(vid_st, hls->m3u8_out, bandwidth, m3u8_rel_name, aud_st ? vs->agroup : NULL, vs->codec_attr, ccgroup); av_freep(&m3u8_rel_name); } fail: if(ret >=0) hls->master_m3u8_created = 1; av_freep(&m3u8_rel_name); hlsenc_io_close(s, &hls->m3u8_out, hls->master_m3u8_url); return ret; } static int hls_window(AVFormatContext *s, int last, VariantStream *vs) { HLSContext *hls = s->priv_data; HLSSegment *en; int target_duration = 0; int ret = 0; char temp_filename[1024]; int64_t sequence = FFMAX(hls->start_sequence, vs->sequence - vs->nb_entries); const char *proto = avio_find_protocol_name(s->url); int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE); static unsigned warned_non_file; char *key_uri = NULL; char *iv_string = NULL; AVDictionary *options = NULL; double prog_date_time = vs->initial_prog_date_time; double *prog_date_time_p = (hls->flags & HLS_PROGRAM_DATE_TIME) ? &prog_date_time : NULL; int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0); hls->version = 3; if (byterange_mode) { hls->version = 4; sequence = 0; } if (hls->flags & HLS_INDEPENDENT_SEGMENTS) { hls->version = 6; } if (hls->segment_type == SEGMENT_TYPE_FMP4) { hls->version = 7; } if (!use_temp_file && !warned_non_file++) av_log(s, AV_LOG_ERROR, "Cannot use rename on non file protocol, this may lead to races and temporary partial files\n"); set_http_options(s, &options, hls); snprintf(temp_filename, sizeof(temp_filename), use_temp_file ? "%s.tmp" : "%s", vs->m3u8_name); if ((ret = hlsenc_io_open(s, &hls->m3u8_out, temp_filename, &options)) < 0) goto fail; for (en = vs->segments; en; en = en->next) { if (target_duration <= en->duration) target_duration = lrint(en->duration); } vs->discontinuity_set = 0; ff_hls_write_playlist_header(hls->m3u8_out, hls->version, hls->allowcache, target_duration, sequence, hls->pl_type); if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && vs->discontinuity_set==0 ){ avio_printf(hls->m3u8_out, "#EXT-X-DISCONTINUITY\n"); vs->discontinuity_set = 1; } if (vs->has_video && (hls->flags & HLS_INDEPENDENT_SEGMENTS)) { avio_printf(hls->m3u8_out, "#EXT-X-INDEPENDENT-SEGMENTS\n"); } for (en = vs->segments; en; en = en->next) { if ((hls->encrypt || hls->key_info_file) && (!key_uri || strcmp(en->key_uri, key_uri) || av_strcasecmp(en->iv_string, iv_string))) { avio_printf(hls->m3u8_out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri); if (*en->iv_string) avio_printf(hls->m3u8_out, ",IV=0x%s", en->iv_string); avio_printf(hls->m3u8_out, "\n"); key_uri = en->key_uri; iv_string = en->iv_string; } if ((hls->segment_type == SEGMENT_TYPE_FMP4) && (en == vs->segments)) { ff_hls_write_init_file(hls->m3u8_out, (hls->flags & HLS_SINGLE_FILE) ? en->filename : vs->fmp4_init_filename, hls->flags & HLS_SINGLE_FILE, vs->init_range_length, 0); } ret = ff_hls_write_file_entry(hls->m3u8_out, en->discont, byterange_mode, en->duration, hls->flags & HLS_ROUND_DURATIONS, en->size, en->pos, vs->baseurl, en->filename, prog_date_time_p); if (ret < 0) { av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n"); } } if (last && (hls->flags & HLS_OMIT_ENDLIST)==0) ff_hls_write_end_list(hls->m3u8_out); if( vs->vtt_m3u8_name ) { if ((ret = hlsenc_io_open(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name, &options)) < 0) goto fail; ff_hls_write_playlist_header(hls->sub_m3u8_out, hls->version, hls->allowcache, target_duration, sequence, PLAYLIST_TYPE_NONE); for (en = vs->segments; en; en = en->next) { ret = ff_hls_write_file_entry(hls->sub_m3u8_out, 0, byterange_mode, en->duration, 0, en->size, en->pos, vs->baseurl, en->sub_filename, NULL); if (ret < 0) { av_log(s, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n"); } } if (last) ff_hls_write_end_list(hls->sub_m3u8_out); } fail: av_dict_free(&options); hlsenc_io_close(s, &hls->m3u8_out, temp_filename); hlsenc_io_close(s, &hls->sub_m3u8_out, vs->vtt_m3u8_name); if (use_temp_file) ff_rename(temp_filename, vs->m3u8_name, s); if (ret >= 0 && hls->master_pl_name) if (create_master_playlist(s, vs) < 0) av_log(s, AV_LOG_WARNING, "Master playlist creation failed\n"); return ret; } static int hls_start(AVFormatContext *s, VariantStream *vs) { HLSContext *c = s->priv_data; AVFormatContext *oc = vs->avf; AVFormatContext *vtt_oc = vs->vtt_avf; AVDictionary *options = NULL; const char *proto = avio_find_protocol_name(s->url); int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE); char *filename, iv_string[KEYSIZE*2 + 1]; int err = 0; if (c->flags & HLS_SINGLE_FILE) { char *new_name = av_strdup(vs->basename); if (!new_name) return AVERROR(ENOMEM); ff_format_set_url(oc, new_name); if (vs->vtt_basename) { new_name = av_strdup(vs->vtt_basename); if (!new_name) return AVERROR(ENOMEM); ff_format_set_url(vtt_oc, new_name); } } else if (c->max_seg_size > 0) { char *filename = NULL; if (replace_int_data_in_filename(&filename, #if FF_API_HLS_WRAP vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) { #else vs->basename, 'd', vs->sequence) < 1) { #endif av_free(filename); av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -strftime 1 with it\n", vs->basename); return AVERROR(EINVAL); } ff_format_set_url(oc, filename); } else { if (c->use_localtime) { time_t now0; struct tm *tm, tmpbuf; int bufsize = strlen(vs->basename) + 1024; char *buf = av_mallocz(bufsize); if (!buf) return AVERROR(ENOMEM); time(&now0); tm = localtime_r(&now0, &tmpbuf); ff_format_set_url(oc, buf); if (!strftime(oc->url, bufsize, vs->basename, tm)) { av_log(oc, AV_LOG_ERROR, "Could not get segment filename with strftime\n"); return AVERROR(EINVAL); } err = sls_flag_use_localtime_filename(oc, c, vs); if (err < 0) { return AVERROR(ENOMEM); } if (c->use_localtime_mkdir) { const char *dir; char *fn_copy = av_strdup(oc->url); if (!fn_copy) { return AVERROR(ENOMEM); } dir = av_dirname(fn_copy); if (ff_mkdir_p(dir) == -1 && errno != EEXIST) { av_log(oc, AV_LOG_ERROR, "Could not create directory %s with use_localtime_mkdir\n", dir); av_free(fn_copy); return AVERROR(errno); } av_free(fn_copy); } } else { char *filename = NULL; if (replace_int_data_in_filename(&filename, #if FF_API_HLS_WRAP vs->basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) { #else vs->basename, 'd', vs->sequence) < 1) { #endif av_free(filename); av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -strftime 1 with it\n", vs->basename); return AVERROR(EINVAL); } ff_format_set_url(oc, filename); } if( vs->vtt_basename) { char *filename = NULL; if (replace_int_data_in_filename(&filename, #if FF_API_HLS_WRAP vs->vtt_basename, 'd', c->wrap ? vs->sequence % c->wrap : vs->sequence) < 1) { #else vs->vtt_basename, 'd', vs->sequence) < 1) { #endif av_free(filename); av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", vs->vtt_basename); return AVERROR(EINVAL); } ff_format_set_url(vtt_oc, filename); } } vs->number++; set_http_options(s, &options, c); if (use_temp_file) { char *new_name = av_asprintf("%s.tmp", oc->url); if (!new_name) return AVERROR(ENOMEM); ff_format_set_url(oc, new_name); } if (c->key_info_file || c->encrypt) { if (c->segment_type == SEGMENT_TYPE_FMP4) { av_log(s, AV_LOG_ERROR, "Encrypted fmp4 not yet supported\n"); return AVERROR_PATCHWELCOME; } if (c->key_info_file && c->encrypt) { av_log(s, AV_LOG_WARNING, "Cannot use both -hls_key_info_file and -hls_enc," " ignoring -hls_enc\n"); } if (!c->encrypt_started || (c->flags & HLS_PERIODIC_REKEY)) { if (c->key_info_file) { if ((err = hls_encryption_start(s)) < 0) goto fail; } else { if ((err = do_encrypt(s, vs)) < 0) goto fail; } c->encrypt_started = 1; } if ((err = av_dict_set(&options, "encryption_key", c->key_string, 0)) < 0) goto fail; err = av_strlcpy(iv_string, c->iv_string, sizeof(iv_string)); if (!err) snprintf(iv_string, sizeof(iv_string), "%032"PRIx64, vs->sequence); if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0) goto fail; filename = av_asprintf("crypto:%s", oc->url); if (!filename) { err = AVERROR(ENOMEM); goto fail; } err = hlsenc_io_open(s, &oc->pb, filename, &options); av_free(filename); av_dict_free(&options); if (err < 0) return err; } else if (c->segment_type != SEGMENT_TYPE_FMP4) { if ((err = hlsenc_io_open(s, &oc->pb, oc->url, &options)) < 0) goto fail; } if (vs->vtt_basename) { set_http_options(s, &options, c); if ((err = hlsenc_io_open(s, &vtt_oc->pb, vtt_oc->url, &options)) < 0) goto fail; } av_dict_free(&options); if (c->segment_type != SEGMENT_TYPE_FMP4) { /* We only require one PAT/PMT per segment. */ if (oc->oformat->priv_class && oc->priv_data) { char period[21]; snprintf(period, sizeof(period), "%d", (INT_MAX / 2) - 1); av_opt_set(oc->priv_data, "mpegts_flags", "resend_headers", 0); av_opt_set(oc->priv_data, "sdt_period", period, 0); av_opt_set(oc->priv_data, "pat_period", period, 0); } } if (vs->vtt_basename) { err = avformat_write_header(vtt_oc,NULL); if (err < 0) return err; } return 0; fail: av_dict_free(&options); return err; } static const char * get_default_pattern_localtime_fmt(AVFormatContext *s) { char b[21]; time_t t = time(NULL); struct tm *p, tmbuf; HLSContext *hls = s->priv_data; p = localtime_r(&t, &tmbuf); // no %s support when strftime returned error or left format string unchanged // also no %s support on MSVC, which invokes the invalid parameter handler on unsupported format strings, instead of returning an error if (hls->segment_type == SEGMENT_TYPE_FMP4) { return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.m4s" : "-%s.m4s"; } return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts"; } static int append_postfix(char *name, int name_buf_len, int i) { char *p; char extension[10] = {'\0'}; p = strrchr(name, '.'); if (p) { av_strlcpy(extension, p, sizeof(extension)); *p = '\0'; } snprintf(name + strlen(name), name_buf_len - strlen(name), POSTFIX_PATTERN, i); if (strlen(extension)) av_strlcat(name, extension, name_buf_len); return 0; } static int validate_name(int nb_vs, const char *fn) { const char *filename, *subdir_name; char *fn_dup = NULL; int ret = 0; if (!fn) { ret = AVERROR(EINVAL); goto fail; } fn_dup = av_strdup(fn); if (!fn_dup) { ret = AVERROR(ENOMEM); goto fail; } filename = av_basename(fn); subdir_name = av_dirname(fn_dup); if (nb_vs > 1 && !av_stristr(filename, "%v") && !av_stristr(subdir_name, "%v")) { av_log(NULL, AV_LOG_ERROR, "More than 1 variant streams are present, %%v is expected in the filename %s\n", fn); ret = AVERROR(EINVAL); goto fail; } if (av_stristr(filename, "%v") && av_stristr(subdir_name, "%v")) { av_log(NULL, AV_LOG_ERROR, "%%v is expected either in filename or in the sub-directory name of file %s\n", fn); ret = AVERROR(EINVAL); goto fail; } fail: av_freep(&fn_dup); return ret; } static int format_name(char *buf, int buf_len, int index) { const char *proto, *dir; char *orig_buf_dup = NULL, *mod_buf = NULL, *mod_buf_dup = NULL; int ret = 0; if (!av_stristr(buf, "%v")) return ret; orig_buf_dup = av_strdup(buf); if (!orig_buf_dup) { ret = AVERROR(ENOMEM); goto fail; } if (replace_int_data_in_filename(&mod_buf, orig_buf_dup, 'v', index) < 1) { ret = AVERROR(EINVAL); goto fail; } av_strlcpy(buf, mod_buf, buf_len); proto = avio_find_protocol_name(orig_buf_dup); dir = av_dirname(orig_buf_dup); /* if %v is present in the file's directory, create sub-directory */ if (av_stristr(dir, "%v") && proto && !strcmp(proto, "file")) { mod_buf_dup = av_strdup(buf); if (!mod_buf_dup) { ret = AVERROR(ENOMEM); goto fail; } dir = av_dirname(mod_buf_dup); if (ff_mkdir_p(dir) == -1 && errno != EEXIST) { ret = AVERROR(errno); goto fail; } } fail: av_freep(&orig_buf_dup); av_freep(&mod_buf_dup); av_freep(&mod_buf); return ret; } static int get_nth_codec_stream_index(AVFormatContext *s, enum AVMediaType codec_type, int stream_id) { unsigned int stream_index, cnt; if (stream_id < 0 || stream_id > s->nb_streams - 1) return -1; cnt = 0; for (stream_index = 0; stream_index < s->nb_streams; stream_index++) { if (s->streams[stream_index]->codecpar->codec_type != codec_type) continue; if (cnt == stream_id) return stream_index; cnt++; } return -1; } static int parse_variant_stream_mapstring(AVFormatContext *s) { HLSContext *hls = s->priv_data; VariantStream *vs; int stream_index; enum AVMediaType codec_type; int nb_varstreams, nb_streams; char *p, *q, *saveptr1, *saveptr2, *varstr, *keyval; const char *val; /** * Expected format for var_stream_map string is as below: * "a:0,v:0 a:1,v:1" * "a:0,agroup:a0 a:1,agroup:a1 v:0,agroup:a0 v:1,agroup:a1" * This string specifies how to group the audio, video and subtitle streams * into different variant streams. The variant stream groups are separated * by space. * * a:, v:, s: are keys to specify audio, video and subtitle streams * respectively. Allowed values are 0 to 9 digits (limited just based on * practical usage) * * agroup: is key to specify audio group. A string can be given as value. */ p = av_strdup(hls->var_stream_map); q = p; while(av_strtok(q, " \t", &saveptr1)) { q = NULL; hls->nb_varstreams++; } av_freep(&p); hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams); if (!hls->var_streams) return AVERROR(ENOMEM); p = hls->var_stream_map; nb_varstreams = 0; while (varstr = av_strtok(p, " \t", &saveptr1)) { p = NULL; if (nb_varstreams < hls->nb_varstreams) { vs = &(hls->var_streams[nb_varstreams]); vs->var_stream_idx = nb_varstreams; nb_varstreams++; } else return AVERROR(EINVAL); q = varstr; while (q < varstr + strlen(varstr)) { if (!av_strncasecmp(q, "a:", 2) || !av_strncasecmp(q, "v:", 2) || !av_strncasecmp(q, "s:", 2)) vs->nb_streams++; q++; } vs->streams = av_mallocz(sizeof(AVStream *) * vs->nb_streams); if (!vs->streams) return AVERROR(ENOMEM); nb_streams = 0; while (keyval = av_strtok(varstr, ",", &saveptr2)) { varstr = NULL; if (av_strstart(keyval, "agroup:", &val)) { vs->agroup = av_strdup(val); if (!vs->agroup) return AVERROR(ENOMEM); continue; } else if (av_strstart(keyval, "ccgroup:", &val)) { vs->ccgroup = av_strdup(val); if (!vs->ccgroup) return AVERROR(ENOMEM); continue; } else if (av_strstart(keyval, "v:", &val)) { codec_type = AVMEDIA_TYPE_VIDEO; } else if (av_strstart(keyval, "a:", &val)) { codec_type = AVMEDIA_TYPE_AUDIO; } else if (av_strstart(keyval, "s:", &val)) { codec_type = AVMEDIA_TYPE_SUBTITLE; } else { av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval); return AVERROR(EINVAL); } stream_index = -1; if (av_isdigit(*val)) stream_index = get_nth_codec_stream_index (s, codec_type, atoi(val)); if (stream_index >= 0 && nb_streams < vs->nb_streams) { vs->streams[nb_streams++] = s->streams[stream_index]; } else { av_log(s, AV_LOG_ERROR, "Unable to map stream at %s\n", keyval); return AVERROR(EINVAL); } } } av_log(s, AV_LOG_DEBUG, "Number of variant streams %d\n", hls->nb_varstreams); return 0; } static int parse_cc_stream_mapstring(AVFormatContext *s) { HLSContext *hls = s->priv_data; int nb_ccstreams; char *p, *q, *ccstr, *keyval; char *saveptr1 = NULL, *saveptr2 = NULL; const char *val; ClosedCaptionsStream *ccs; p = av_strdup(hls->cc_stream_map); q = p; while(av_strtok(q, " \t", &saveptr1)) { q = NULL; hls->nb_ccstreams++; } av_freep(&p); hls->cc_streams = av_mallocz(sizeof(*hls->cc_streams) * hls->nb_ccstreams); if (!hls->cc_streams) return AVERROR(ENOMEM); p = hls->cc_stream_map; nb_ccstreams = 0; while (ccstr = av_strtok(p, " \t", &saveptr1)) { p = NULL; if (nb_ccstreams < hls->nb_ccstreams) ccs = &(hls->cc_streams[nb_ccstreams++]); else return AVERROR(EINVAL); while (keyval = av_strtok(ccstr, ",", &saveptr2)) { ccstr = NULL; if (av_strstart(keyval, "ccgroup:", &val)) { ccs->ccgroup = av_strdup(val); if (!ccs->ccgroup) return AVERROR(ENOMEM); } else if (av_strstart(keyval, "instreamid:", &val)) { ccs->instreamid = av_strdup(val); if (!ccs->instreamid) return AVERROR(ENOMEM); } else if (av_strstart(keyval, "language:", &val)) { ccs->language = av_strdup(val); if (!ccs->language) return AVERROR(ENOMEM); } else { av_log(s, AV_LOG_ERROR, "Invalid keyval %s\n", keyval); return AVERROR(EINVAL); } } if (!ccs->ccgroup || !ccs->instreamid) { av_log(s, AV_LOG_ERROR, "Insufficient parameters in cc stream map string\n"); return AVERROR(EINVAL); } if (av_strstart(ccs->instreamid, "CC", &val)) { if(atoi(val) < 1 || atoi(val) > 4) { av_log(s, AV_LOG_ERROR, "Invalid instream ID CC index %d in %s, range 1-4\n", atoi(val), ccs->instreamid); return AVERROR(EINVAL); } } else if (av_strstart(ccs->instreamid, "SERVICE", &val)) { if(atoi(val) < 1 || atoi(val) > 63) { av_log(s, AV_LOG_ERROR, "Invalid instream ID SERVICE index %d in %s, range 1-63 \n", atoi(val), ccs->instreamid); return AVERROR(EINVAL); } } else { av_log(s, AV_LOG_ERROR, "Invalid instream ID %s, supported are CCn or SERIVICEn\n", ccs->instreamid); return AVERROR(EINVAL); } } return 0; } static int update_variant_stream_info(AVFormatContext *s) { HLSContext *hls = s->priv_data; unsigned int i; int ret = 0; if (hls->cc_stream_map) { ret = parse_cc_stream_mapstring(s); if (ret < 0) return ret; } if (hls->var_stream_map) { return parse_variant_stream_mapstring(s); } else { //By default, a single variant stream with all the codec streams is created hls->nb_varstreams = 1; hls->var_streams = av_mallocz(sizeof(*hls->var_streams) * hls->nb_varstreams); if (!hls->var_streams) return AVERROR(ENOMEM); hls->var_streams[0].var_stream_idx = 0; hls->var_streams[0].nb_streams = s->nb_streams; hls->var_streams[0].streams = av_mallocz(sizeof(AVStream *) * hls->var_streams[0].nb_streams); if (!hls->var_streams[0].streams) return AVERROR(ENOMEM); //by default, the first available ccgroup is mapped to the variant stream if (hls->nb_ccstreams) { hls->var_streams[0].ccgroup = av_strdup(hls->cc_streams[0].ccgroup); if (!hls->var_streams[0].ccgroup) return AVERROR(ENOMEM); } for (i = 0; i < s->nb_streams; i++) hls->var_streams[0].streams[i] = s->streams[i]; } return 0; } static int update_master_pl_info(AVFormatContext *s) { HLSContext *hls = s->priv_data; const char *dir; char *fn1= NULL, *fn2 = NULL; int ret = 0; fn1 = av_strdup(s->url); if (!fn1) { ret = AVERROR(ENOMEM); goto fail; } dir = av_dirname(fn1); /** * if output file's directory has %v, variants are created in sub-directories * then master is created at the sub-directories level */ if (dir && av_stristr(av_basename(dir), "%v")) { fn2 = av_strdup(dir); if (!fn2) { ret = AVERROR(ENOMEM); goto fail; } dir = av_dirname(fn2); } if (dir && strcmp(dir, ".")) hls->master_m3u8_url = av_append_path_component(dir, hls->master_pl_name); else hls->master_m3u8_url = av_strdup(hls->master_pl_name); if (!hls->master_m3u8_url) { ret = AVERROR(ENOMEM); goto fail; } fail: av_freep(&fn1); av_freep(&fn2); return ret; } static int hls_write_header(AVFormatContext *s) { HLSContext *hls = s->priv_data; int ret, i, j; AVDictionary *options = NULL; VariantStream *vs = NULL; for (i = 0; i < hls->nb_varstreams; i++) { vs = &hls->var_streams[i]; av_dict_copy(&options, hls->format_options, 0); ret = avformat_write_header(vs->avf, &options); if (av_dict_count(options)) { av_log(s, AV_LOG_ERROR, "Some of provided format options in '%s' are not recognized\n", hls->format_options_str); ret = AVERROR(EINVAL); av_dict_free(&options); goto fail; } av_dict_free(&options); //av_assert0(s->nb_streams == hls->avf->nb_streams); for (j = 0; j < vs->nb_streams; j++) { AVStream *inner_st; AVStream *outer_st = vs->streams[j]; if (hls->max_seg_size > 0) { if ((outer_st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (outer_st->codecpar->bit_rate > hls->max_seg_size)) { av_log(s, AV_LOG_WARNING, "Your video bitrate is bigger than hls_segment_size, " "(%"PRId64 " > %"PRId64 "), the result maybe not be what you want.", outer_st->codecpar->bit_rate, hls->max_seg_size); } } if (outer_st->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE) inner_st = vs->avf->streams[j]; else if (vs->vtt_avf) inner_st = vs->vtt_avf->streams[0]; else { /* We have a subtitle stream, when the user does not want one */ inner_st = NULL; continue; } avpriv_set_pts_info(outer_st, inner_st->pts_wrap_bits, inner_st->time_base.num, inner_st->time_base.den); write_codec_attr(outer_st, vs); } /* Update the Codec Attr string for the mapped audio groups */ if (vs->has_video && vs->agroup) { for (j = 0; j < hls->nb_varstreams; j++) { VariantStream *vs_agroup = &(hls->var_streams[j]); if (!vs_agroup->has_video && !vs_agroup->has_subtitle && vs_agroup->agroup && !av_strcasecmp(vs_agroup->agroup, vs->agroup)) { write_codec_attr(vs_agroup->streams[0], vs); } } } } fail: return ret; } static int hls_write_packet(AVFormatContext *s, AVPacket *pkt) { HLSContext *hls = s->priv_data; AVFormatContext *oc = NULL; AVStream *st = s->streams[pkt->stream_index]; int64_t end_pts = 0; int is_ref_pkt = 1; int ret = 0, can_split = 1, i, j; int stream_index = 0; int range_length = 0; const char *proto = avio_find_protocol_name(s->url); int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE); uint8_t *buffer = NULL; VariantStream *vs = NULL; AVDictionary *options = NULL; char *old_filename = NULL; for (i = 0; i < hls->nb_varstreams; i++) { vs = &hls->var_streams[i]; for (j = 0; j < vs->nb_streams; j++) { if (vs->streams[j] == st) { if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) { oc = vs->vtt_avf; stream_index = 0; } else { oc = vs->avf; stream_index = j; } break; } } if (oc) break; } if (!oc) { av_log(s, AV_LOG_ERROR, "Unable to find mapping variant stream\n"); return AVERROR(ENOMEM); } end_pts = hls->recording_time * vs->number; if (vs->sequence - vs->nb_entries > hls->start_sequence && hls->init_time > 0) { /* reset end_pts, hls->recording_time at end of the init hls list */ int init_list_dur = hls->init_time * vs->nb_entries * AV_TIME_BASE; int after_init_list_dur = (vs->sequence - hls->start_sequence - vs->nb_entries ) * (hls->time * AV_TIME_BASE); hls->recording_time = hls->time * AV_TIME_BASE; end_pts = init_list_dur + after_init_list_dur ; } if (vs->start_pts == AV_NOPTS_VALUE) { vs->start_pts = pkt->pts; } if (vs->has_video) { can_split = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ((pkt->flags & AV_PKT_FLAG_KEY) || (hls->flags & HLS_SPLIT_BY_TIME)); is_ref_pkt = (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && (pkt->stream_index == vs->reference_stream_index); } if (pkt->pts == AV_NOPTS_VALUE) is_ref_pkt = can_split = 0; if (is_ref_pkt) { if (vs->end_pts == AV_NOPTS_VALUE) vs->end_pts = pkt->pts; if (vs->new_start) { vs->new_start = 0; vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den; vs->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den; } else { if (pkt->duration) { vs->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den; } else { av_log(s, AV_LOG_WARNING, "pkt->duration = 0, maybe the hls segment duration will not precise\n"); vs->duration = (double)(pkt->pts - vs->end_pts) * st->time_base.num / st->time_base.den; } } } if (vs->packets_written && can_split && av_compare_ts(pkt->pts - vs->start_pts, st->time_base, end_pts, AV_TIME_BASE_Q) >= 0) { int64_t new_start_pos; int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0); av_write_frame(vs->avf, NULL); /* Flush any buffered data */ new_start_pos = avio_tell(vs->avf->pb); if (hls->segment_type != SEGMENT_TYPE_FMP4) { vs->size = new_start_pos - vs->start_pos; } else { vs->size = new_start_pos; } if (hls->segment_type == SEGMENT_TYPE_FMP4) { if (!vs->init_range_length) { avio_flush(oc->pb); range_length = avio_close_dyn_buf(oc->pb, &buffer); avio_write(vs->out, buffer, range_length); vs->init_range_length = range_length; avio_open_dyn_buf(&oc->pb); vs->packets_written = 0; vs->start_pos = range_length; if (!byterange_mode) { ff_format_io_close(s, &vs->out); hlsenc_io_close(s, &vs->out, vs->base_output_dirname); } } } else { if (!byterange_mode) { hlsenc_io_close(s, &oc->pb, oc->url); } } if (!byterange_mode) { if (vs->vtt_avf) { hlsenc_io_close(s, &vs->vtt_avf->pb, vs->vtt_avf->url); } } // look to rename the asset name if (use_temp_file && oc->url[0]) { if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0)) if ((vs->avf->oformat->priv_class && vs->avf->priv_data) && hls->segment_type != SEGMENT_TYPE_FMP4) { av_opt_set(vs->avf->priv_data, "mpegts_flags", "resend_headers", 0); } } if (vs->fmp4_init_mode) { vs->number--; } if (hls->segment_type == SEGMENT_TYPE_FMP4) { if (hls->flags & HLS_SINGLE_FILE) { ret = flush_dynbuf(vs, &range_length); if (ret < 0) { av_free(old_filename); return ret; } vs->size = range_length; } else { set_http_options(s, &options, hls); ret = hlsenc_io_open(s, &vs->out, vs->avf->url, &options); if (ret < 0) { av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url); return ret; } write_styp(vs->out); ret = flush_dynbuf(vs, &range_length); if (ret < 0) { return ret; } ff_format_io_close(s, &vs->out); // rename that segment from .tmp to the real one if (use_temp_file && oc->url[0]) { hls_rename_temp_file(s, oc); av_free(old_filename); old_filename = av_strdup(vs->avf->url); if (!old_filename) { return AVERROR(ENOMEM); } } } } old_filename = av_strdup(vs->avf->url); if (!old_filename) { return AVERROR(ENOMEM); } if (vs->start_pos || hls->segment_type != SEGMENT_TYPE_FMP4) { ret = hls_append_segment(s, hls, vs, vs->duration, vs->start_pos, vs->size); vs->end_pts = pkt->pts; vs->duration = 0; if (ret < 0) { av_free(old_filename); return ret; } } if (hls->segment_type != SEGMENT_TYPE_FMP4) { vs->start_pos = new_start_pos; } else { vs->start_pos += vs->size; } vs->fmp4_init_mode = 0; if (hls->flags & HLS_SINGLE_FILE) { vs->number++; } else if (hls->max_seg_size > 0) { if (vs->start_pos >= hls->max_seg_size) { vs->sequence++; sls_flag_file_rename(hls, vs, old_filename); ret = hls_start(s, vs); vs->start_pos = 0; /* When split segment by byte, the duration is short than hls_time, * so it is not enough one segment duration as hls_time, */ vs->number--; } vs->number++; } else { sls_flag_file_rename(hls, vs, old_filename); ret = hls_start(s, vs); } av_free(old_filename); if (ret < 0) { return ret; } // if we're building a VOD playlist, skip writing the manifest multiple times, and just wait until the end if (hls->pl_type != PLAYLIST_TYPE_VOD) { if ((ret = hls_window(s, 0, vs)) < 0) { return ret; } } } vs->packets_written++; ret = ff_write_chained(oc, stream_index, pkt, s, 0); return ret; } static int hls_write_trailer(struct AVFormatContext *s) { HLSContext *hls = s->priv_data; AVFormatContext *oc = NULL; AVFormatContext *vtt_oc = NULL; char *old_filename = NULL; const char *proto = avio_find_protocol_name(s->url); int use_temp_file = proto && !strcmp(proto, "file") && (s->flags & HLS_TEMP_FILE); int i; int ret = 0; VariantStream *vs = NULL; for (i = 0; i < hls->nb_varstreams; i++) { vs = &hls->var_streams[i]; oc = vs->avf; vtt_oc = vs->vtt_avf; old_filename = av_strdup(vs->avf->url); if (!old_filename) { return AVERROR(ENOMEM); } if ( hls->segment_type == SEGMENT_TYPE_FMP4) { int range_length = 0; if (!(hls->flags & HLS_SINGLE_FILE)) { ret = hlsenc_io_open(s, &vs->out, vs->avf->url, NULL); if (ret < 0) { av_log(s, AV_LOG_ERROR, "Failed to open file '%s'\n", vs->avf->url); goto failed; } write_styp(vs->out); } ret = flush_dynbuf(vs, &range_length); if (ret < 0) { goto failed; } ff_format_io_close(s, &vs->out); } failed: av_write_trailer(oc); if (oc->pb) { if (hls->segment_type != SEGMENT_TYPE_FMP4) { vs->size = avio_tell(vs->avf->pb) - vs->start_pos; } else { vs->size = avio_tell(vs->avf->pb); } if (hls->segment_type != SEGMENT_TYPE_FMP4) ff_format_io_close(s, &oc->pb); // rename that segment from .tmp to the real one if (use_temp_file && oc->url[0] && !(hls->flags & HLS_SINGLE_FILE)) { hls_rename_temp_file(s, oc); av_free(old_filename); old_filename = av_strdup(vs->avf->url); if (!old_filename) { return AVERROR(ENOMEM); } } /* after av_write_trailer, then duration + 1 duration per packet */ hls_append_segment(s, hls, vs, vs->duration + vs->dpp, vs->start_pos, vs->size); } sls_flag_file_rename(hls, vs, old_filename); if (vtt_oc) { if (vtt_oc->pb) av_write_trailer(vtt_oc); vs->size = avio_tell(vs->vtt_avf->pb) - vs->start_pos; ff_format_io_close(s, &vtt_oc->pb); } av_freep(&vs->basename); av_freep(&vs->base_output_dirname); avformat_free_context(oc); vs->avf = NULL; hls_window(s, 1, vs); av_freep(&vs->fmp4_init_filename); if (vtt_oc) { av_freep(&vs->vtt_basename); av_freep(&vs->vtt_m3u8_name); avformat_free_context(vtt_oc); } hls_free_segments(vs->segments); hls_free_segments(vs->old_segments); av_free(old_filename); av_freep(&vs->m3u8_name); av_freep(&vs->streams); av_freep(&vs->agroup); av_freep(&vs->ccgroup); av_freep(&vs->baseurl); } for (i = 0; i < hls->nb_ccstreams; i++) { ClosedCaptionsStream *ccs = &hls->cc_streams[i]; av_freep(&ccs->ccgroup); av_freep(&ccs->instreamid); av_freep(&ccs->language); } ff_format_io_close(s, &hls->m3u8_out); ff_format_io_close(s, &hls->sub_m3u8_out); av_freep(&hls->key_basename); av_freep(&hls->var_streams); av_freep(&hls->cc_streams); av_freep(&hls->master_m3u8_url); return 0; } static int hls_init(AVFormatContext *s) { int ret = 0; int i = 0; int j = 0; HLSContext *hls = s->priv_data; const char *pattern = "%d.ts"; VariantStream *vs = NULL; int basename_size = 0; const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(s); const char *vtt_pattern = "%d.vtt"; char *p = NULL; int vtt_basename_size = 0; int fmp4_init_filename_len = strlen(hls->fmp4_init_filename) + 1; ret = update_variant_stream_info(s); if (ret < 0) { av_log(s, AV_LOG_ERROR, "Variant stream info update failed with status %x\n", ret); goto fail; } //TODO: Updates needed to encryption functionality with periodic re-key when more than one variant streams are present if (hls->nb_varstreams > 1 && hls->flags & HLS_PERIODIC_REKEY) { ret = AVERROR(EINVAL); av_log(s, AV_LOG_ERROR, "Periodic re-key not supported when more than one variant streams are present\n"); goto fail; } ret = validate_name(hls->nb_varstreams, s->url); if (ret < 0) goto fail; if (hls->segment_filename) { ret = validate_name(hls->nb_varstreams, hls->segment_filename); if (ret < 0) goto fail; } if (av_strcasecmp(hls->fmp4_init_filename, "init.mp4")) { ret = validate_name(hls->nb_varstreams, hls->fmp4_init_filename); if (ret < 0) goto fail; } if (hls->subtitle_filename) { ret = validate_name(hls->nb_varstreams, hls->subtitle_filename); if (ret < 0) goto fail; } if (hls->master_pl_name) { ret = update_master_pl_info(s); if (ret < 0) { av_log(s, AV_LOG_ERROR, "Master stream info update failed with status %x\n", ret); goto fail; } } if (hls->segment_type == SEGMENT_TYPE_FMP4) { pattern = "%d.m4s"; } if ((hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) || (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME)) { time_t t = time(NULL); // we will need it in either case if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH) { hls->start_sequence = (int64_t)t; } else if (hls->start_sequence_source_type == HLS_START_SEQUENCE_AS_FORMATTED_DATETIME) { char b[15]; struct tm *p, tmbuf; if (!(p = localtime_r(&t, &tmbuf))) return AVERROR(ENOMEM); if (!strftime(b, sizeof(b), "%Y%m%d%H%M%S", p)) return AVERROR(ENOMEM); hls->start_sequence = strtoll(b, NULL, 10); } av_log(hls, AV_LOG_DEBUG, "start_number evaluated to %"PRId64"\n", hls->start_sequence); } hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE; for (i = 0; i < hls->nb_varstreams; i++) { vs = &hls->var_streams[i]; vs->m3u8_name = av_strdup(s->url); if (!vs->m3u8_name ) { ret = AVERROR(ENOMEM); goto fail; } ret = format_name(vs->m3u8_name, strlen(s->url) + 1, i); if (ret < 0) goto fail; vs->sequence = hls->start_sequence; vs->start_pts = AV_NOPTS_VALUE; vs->end_pts = AV_NOPTS_VALUE; vs->current_segment_final_filename_fmt[0] = '\0'; if (hls->flags & HLS_SPLIT_BY_TIME && hls->flags & HLS_INDEPENDENT_SEGMENTS) { // Independent segments cannot be guaranteed when splitting by time hls->flags &= ~HLS_INDEPENDENT_SEGMENTS; av_log(s, AV_LOG_WARNING, "'split_by_time' and 'independent_segments' cannot be enabled together. " "Disabling 'independent_segments' flag\n"); } if (hls->flags & HLS_PROGRAM_DATE_TIME) { time_t now0; time(&now0); vs->initial_prog_date_time = now0; } if (hls->format_options_str) { ret = av_dict_parse_string(&hls->format_options, hls->format_options_str, "=", ":", 0); if (ret < 0) { av_log(s, AV_LOG_ERROR, "Could not parse format options list '%s'\n", hls->format_options_str); goto fail; } } for (j = 0; j < vs->nb_streams; j++) { vs->has_video += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO; /* Get one video stream to reference for split segments * so use the first video stream index. */ if ((vs->has_video == 1) && (vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) { vs->reference_stream_index = vs->streams[j]->index; } vs->has_subtitle += vs->streams[j]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE; } if (vs->has_video > 1) av_log(s, AV_LOG_WARNING, "More than a single video stream present, expect issues decoding it.\n"); if (hls->segment_type == SEGMENT_TYPE_FMP4) { vs->oformat = av_guess_format("mp4", NULL, NULL); } else { vs->oformat = av_guess_format("mpegts", NULL, NULL); } if (!vs->oformat) { ret = AVERROR_MUXER_NOT_FOUND; goto fail; } if (vs->has_subtitle) { vs->vtt_oformat = av_guess_format("webvtt", NULL, NULL); if (!vs->oformat) { ret = AVERROR_MUXER_NOT_FOUND; goto fail; } } if (hls->segment_filename) { basename_size = strlen(hls->segment_filename) + 1; vs->basename = av_malloc(basename_size); if (!vs->basename) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(vs->basename, hls->segment_filename, basename_size); ret = format_name(vs->basename, basename_size, i); if (ret < 0) goto fail; } else { if (hls->flags & HLS_SINGLE_FILE) { if (hls->segment_type == SEGMENT_TYPE_FMP4) { pattern = ".m4s"; } else { pattern = ".ts"; } } if (hls->use_localtime) { basename_size = strlen(vs->m3u8_name) + strlen(pattern_localtime_fmt) + 1; } else { basename_size = strlen(vs->m3u8_name) + strlen(pattern) + 1; } vs->basename = av_malloc(basename_size); if (!vs->basename) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(vs->basename, vs->m3u8_name, basename_size); p = strrchr(vs->basename, '.'); if (p) *p = '\0'; if (hls->use_localtime) { av_strlcat(vs->basename, pattern_localtime_fmt, basename_size); } else { av_strlcat(vs->basename, pattern, basename_size); } } if (hls->segment_type == SEGMENT_TYPE_FMP4) { if (hls->nb_varstreams > 1) fmp4_init_filename_len += strlen(POSTFIX_PATTERN); if (hls->flags & HLS_SINGLE_FILE) { vs->fmp4_init_filename = av_strdup(vs->basename); if (!vs->fmp4_init_filename) { ret = AVERROR(ENOMEM); goto fail; } } else { vs->fmp4_init_filename = av_malloc(fmp4_init_filename_len); if (!vs->fmp4_init_filename ) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(vs->fmp4_init_filename, hls->fmp4_init_filename, fmp4_init_filename_len); if (hls->nb_varstreams > 1) { ret = append_postfix(vs->fmp4_init_filename, fmp4_init_filename_len, i); if (ret < 0) goto fail; } fmp4_init_filename_len = strlen(vs->m3u8_name) + strlen(vs->fmp4_init_filename) + 1; vs->base_output_dirname = av_malloc(fmp4_init_filename_len); if (!vs->base_output_dirname) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(vs->base_output_dirname, vs->m3u8_name, fmp4_init_filename_len); p = strrchr(vs->base_output_dirname, '/'); if (p) { *(p + 1) = '\0'; av_strlcat(vs->base_output_dirname, vs->fmp4_init_filename, fmp4_init_filename_len); } else { av_strlcpy(vs->base_output_dirname, vs->fmp4_init_filename, fmp4_init_filename_len); } } } if (!hls->use_localtime) { ret = sls_flag_check_duration_size_index(hls); if (ret < 0) { goto fail; } } else { ret = sls_flag_check_duration_size(hls, vs); if (ret < 0) { goto fail; } } if (vs->has_subtitle) { if (hls->flags & HLS_SINGLE_FILE) vtt_pattern = ".vtt"; vtt_basename_size = strlen(vs->m3u8_name) + strlen(vtt_pattern) + 1; vs->vtt_basename = av_malloc(vtt_basename_size); if (!vs->vtt_basename) { ret = AVERROR(ENOMEM); goto fail; } vs->vtt_m3u8_name = av_malloc(vtt_basename_size); if (!vs->vtt_m3u8_name ) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(vs->vtt_basename, vs->m3u8_name, vtt_basename_size); p = strrchr(vs->vtt_basename, '.'); if (p) *p = '\0'; if ( hls->subtitle_filename ) { strcpy(vs->vtt_m3u8_name, hls->subtitle_filename); ret = format_name(vs->vtt_m3u8_name, vtt_basename_size, i); if (ret < 0) goto fail; } else { strcpy(vs->vtt_m3u8_name, vs->vtt_basename); av_strlcat(vs->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size); } av_strlcat(vs->vtt_basename, vtt_pattern, vtt_basename_size); } if (hls->baseurl) { vs->baseurl = av_strdup(hls->baseurl); if (!vs->baseurl) { ret = AVERROR(ENOMEM); goto fail; } } if ((ret = hls_mux_init(s, vs)) < 0) goto fail; if (hls->flags & HLS_APPEND_LIST) { parse_playlist(s, vs->m3u8_name, vs); vs->discontinuity = 1; if (hls->init_time > 0) { av_log(s, AV_LOG_WARNING, "append_list mode does not support hls_init_time," " hls_init_time value will have no effect\n"); hls->init_time = 0; hls->recording_time = hls->time * AV_TIME_BASE; } } if ((ret = hls_start(s, vs)) < 0) goto fail; } fail: if (ret < 0) { av_freep(&hls->key_basename); for (i = 0; i < hls->nb_varstreams && hls->var_streams; i++) { vs = &hls->var_streams[i]; av_freep(&vs->basename); av_freep(&vs->vtt_basename); av_freep(&vs->fmp4_init_filename); av_freep(&vs->m3u8_name); av_freep(&vs->vtt_m3u8_name); av_freep(&vs->streams); av_freep(&vs->agroup); av_freep(&vs->ccgroup); av_freep(&vs->baseurl); if (vs->avf) avformat_free_context(vs->avf); if (vs->vtt_avf) avformat_free_context(vs->vtt_avf); } for (i = 0; i < hls->nb_ccstreams; i++) { ClosedCaptionsStream *ccs = &hls->cc_streams[i]; av_freep(&ccs->ccgroup); av_freep(&ccs->instreamid); av_freep(&ccs->language); } av_freep(&hls->var_streams); av_freep(&hls->cc_streams); av_freep(&hls->master_m3u8_url); } return ret; } #define OFFSET(x) offsetof(HLSContext, x) #define E AV_OPT_FLAG_ENCODING_PARAM static const AVOption options[] = { {"start_number", "set first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E}, {"hls_time", "set segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E}, {"hls_init_time", "set segment length in seconds at init list", OFFSET(init_time), AV_OPT_TYPE_FLOAT, {.dbl = 0}, 0, FLT_MAX, E}, {"hls_list_size", "set maximum number of playlist entries", OFFSET(max_nb_segments), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E}, {"hls_delete_threshold", "set number of unreferenced segments to keep before deleting", OFFSET(hls_delete_threshold), AV_OPT_TYPE_INT, {.i64 = 1}, 1, INT_MAX, E}, {"hls_ts_options","set hls mpegts list of options for the container format used for hls", OFFSET(format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"hls_vtt_options","set hls vtt list of options for the container format used for hls", OFFSET(vtt_format_options_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, #if FF_API_HLS_WRAP {"hls_wrap", "set number after which the index wraps (will be deprecated)", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E}, #endif {"hls_allow_cache", "explicitly set whether the client MAY (1) or MUST NOT (0) cache media segments", OFFSET(allowcache), AV_OPT_TYPE_INT, {.i64 = -1}, INT_MIN, INT_MAX, E}, {"hls_base_url", "url to prepend to each playlist entry", OFFSET(baseurl), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"hls_segment_size", "maximum size per segment file, (in bytes)", OFFSET(max_seg_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E}, {"hls_key_info_file", "file with key URI and key file path", OFFSET(key_info_file), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"hls_enc", "enable AES128 encryption support", OFFSET(encrypt), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, E}, {"hls_enc_key", "hex-coded 16 byte key to encrypt the segments", OFFSET(key), AV_OPT_TYPE_STRING, .flags = E}, {"hls_enc_key_url", "url to access the key to decrypt the segments", OFFSET(key_url), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"hls_enc_iv", "hex-coded 16 byte initialization vector", OFFSET(iv), AV_OPT_TYPE_STRING, .flags = E}, {"hls_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"hls_segment_type", "set hls segment files type", OFFSET(segment_type), AV_OPT_TYPE_INT, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, SEGMENT_TYPE_FMP4, E, "segment_type"}, {"mpegts", "make segment file to mpegts files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MPEGTS }, 0, UINT_MAX, E, "segment_type"}, {"fmp4", "make segment file to fragment mp4 files in m3u8", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_FMP4 }, 0, UINT_MAX, E, "segment_type"}, {"hls_fmp4_init_filename", "set fragment mp4 file init filename", OFFSET(fmp4_init_filename), AV_OPT_TYPE_STRING, {.str = "init.mp4"}, 0, 0, E}, {"hls_flags", "set flags affecting HLS playlist and media file generation", OFFSET(flags), AV_OPT_TYPE_FLAGS, {.i64 = 0 }, 0, UINT_MAX, E, "flags"}, {"single_file", "generate a single media file indexed with byte ranges", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SINGLE_FILE }, 0, UINT_MAX, E, "flags"}, {"temp_file", "write segment to temporary file and rename when complete", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_TEMP_FILE }, 0, UINT_MAX, E, "flags"}, {"delete_segments", "delete segment files that are no longer part of the playlist", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DELETE_SEGMENTS }, 0, UINT_MAX, E, "flags"}, {"round_durations", "round durations in m3u8 to whole numbers", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_ROUND_DURATIONS }, 0, UINT_MAX, E, "flags"}, {"discont_start", "start the playlist with a discontinuity tag", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_DISCONT_START }, 0, UINT_MAX, E, "flags"}, {"omit_endlist", "Do not append an endlist when ending stream", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_OMIT_ENDLIST }, 0, UINT_MAX, E, "flags"}, {"split_by_time", "split the hls segment by time which user set by hls_time", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SPLIT_BY_TIME }, 0, UINT_MAX, E, "flags"}, {"append_list", "append the new segments into old hls segment list", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_APPEND_LIST }, 0, UINT_MAX, E, "flags"}, {"program_date_time", "add EXT-X-PROGRAM-DATE-TIME", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PROGRAM_DATE_TIME }, 0, UINT_MAX, E, "flags"}, {"second_level_segment_index", "include segment index in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_INDEX }, 0, UINT_MAX, E, "flags"}, {"second_level_segment_duration", "include segment duration in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_DURATION }, 0, UINT_MAX, E, "flags"}, {"second_level_segment_size", "include segment size in segment filenames when use_localtime", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_SECOND_LEVEL_SEGMENT_SIZE }, 0, UINT_MAX, E, "flags"}, {"periodic_rekey", "reload keyinfo file periodically for re-keying", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_PERIODIC_REKEY }, 0, UINT_MAX, E, "flags"}, {"independent_segments", "add EXT-X-INDEPENDENT-SEGMENTS, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_INDEPENDENT_SEGMENTS }, 0, UINT_MAX, E, "flags"}, #if FF_API_HLS_USE_LOCALTIME {"use_localtime", "set filename expansion with strftime at segment creation(will be deprecated )", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, #endif {"strftime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, #if FF_API_HLS_USE_LOCALTIME {"use_localtime_mkdir", "create last directory component in strftime-generated filename(will be deprecated)", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, #endif {"strftime_mkdir", "create last directory component in strftime-generated filename", OFFSET(use_localtime_mkdir), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, {"hls_playlist_type", "set the HLS playlist type", OFFSET(pl_type), AV_OPT_TYPE_INT, {.i64 = PLAYLIST_TYPE_NONE }, 0, PLAYLIST_TYPE_NB-1, E, "pl_type" }, {"event", "EVENT playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_EVENT }, INT_MIN, INT_MAX, E, "pl_type" }, {"vod", "VOD playlist", 0, AV_OPT_TYPE_CONST, {.i64 = PLAYLIST_TYPE_VOD }, INT_MIN, INT_MAX, E, "pl_type" }, {"method", "set the HTTP method(default: PUT)", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"hls_start_number_source", "set source of first number in sequence", OFFSET(start_sequence_source_type), AV_OPT_TYPE_INT, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, 0, HLS_START_SEQUENCE_AS_FORMATTED_DATETIME, E, "start_sequence_source_type" }, {"generic", "start_number value (default)", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_START_NUMBER }, INT_MIN, INT_MAX, E, "start_sequence_source_type" }, {"epoch", "seconds since epoch", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_SECONDS_SINCE_EPOCH }, INT_MIN, INT_MAX, E, "start_sequence_source_type" }, {"datetime", "current datetime as YYYYMMDDhhmmss", 0, AV_OPT_TYPE_CONST, {.i64 = HLS_START_SEQUENCE_AS_FORMATTED_DATETIME }, INT_MIN, INT_MAX, E, "start_sequence_source_type" }, {"http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"var_stream_map", "Variant stream map string", OFFSET(var_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"cc_stream_map", "Closed captions stream map string", OFFSET(cc_stream_map), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"master_pl_name", "Create HLS master playlist with this name", OFFSET(master_pl_name), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E}, {"master_pl_publish_rate", "Publish master play list every after this many segment intervals", OFFSET(master_publish_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT_MAX, E}, {"http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, {"timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E }, { NULL }, }; static const AVClass hls_class = { .class_name = "hls muxer", .item_name = av_default_item_name, .option = options, .version = LIBAVUTIL_VERSION_INT, }; AVOutputFormat ff_hls_muxer = { .name = "hls", .long_name = NULL_IF_CONFIG_SMALL("Apple HTTP Live Streaming"), .extensions = "m3u8", .priv_data_size = sizeof(HLSContext), .audio_codec = AV_CODEC_ID_AAC, .video_codec = AV_CODEC_ID_H264, .subtitle_codec = AV_CODEC_ID_WEBVTT, .flags = AVFMT_NOFILE | AVFMT_GLOBALHEADER | AVFMT_ALLOW_FLUSH | AVFMT_NODIMENSIONS, .init = hls_init, .write_header = hls_write_header, .write_packet = hls_write_packet, .write_trailer = hls_write_trailer, .priv_class = &hls_class, };