/* * Apple HTTP Live Streaming segmenter * Copyright (c) 2012, Luca Barbato * * 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 #include #if HAVE_UNISTD_H #include #endif #include "libavutil/avassert.h" #include "libavutil/mathematics.h" #include "libavutil/parseutils.h" #include "libavutil/avstring.h" #include "libavutil/opt.h" #include "libavutil/log.h" #include "libavutil/time_internal.h" #include "avformat.h" #include "avio_internal.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; #define KEYSIZE 16 #define LINE_BUFFER_SIZE 1024 #define HLS_MICROSECOND_UNIT 1000000 typedef struct HLSSegment { char filename[1024]; char sub_filename[1024]; double duration; /* in seconds */ int discont; int64_t pos; int64_t size; 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), } HLSFlags; typedef enum { PLAYLIST_TYPE_NONE, PLAYLIST_TYPE_EVENT, PLAYLIST_TYPE_VOD, PLAYLIST_TYPE_NB, } PlaylistType; typedef struct HLSContext { const AVClass *class; // Class for private options. unsigned number; int64_t sequence; int64_t start_sequence; uint32_t start_sequence_source_type; // enum StartSequenceSourceType AVOutputFormat *oformat; AVOutputFormat *vtt_oformat; AVFormatContext *avf; AVFormatContext *vtt_avf; float time; // Set by a private option. float init_time; // Set by a private option. int max_nb_segments; // 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; 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; 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 int64_t max_seg_size; // every segment file max size int nb_entries; int discontinuity_set; int discontinuity; HLSSegment *segments; HLSSegment *last_segment; HLSSegment *old_segments; char *basename; char *vtt_basename; char *vtt_m3u8_name; char *baseurl; char *format_options_str; char *vtt_format_options_str; char *subtitle_filename; AVDictionary *format_options; 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; double initial_prog_date_time; char current_segment_final_filename_fmt[1024]; // when renaming segments } HLSContext; static int get_int_from_double(double val) { return (int)((val - (int)val) >= 0.001) ? (int)(val + 1) : (int)val; } static int mkdir_p(const char *path) { int ret = 0; char *temp = av_strdup(path); char *pos = temp; char tmp_ch = '\0'; if (!path || !temp) { return -1; } if (!strncmp(temp, "/", 1) || !strncmp(temp, "\\", 1)) { pos++; } else if (!strncmp(temp, "./", 2) || !strncmp(temp, ".\\", 2)) { pos += 2; } for ( ; *pos != '\0'; ++pos) { if (*pos == '/' || *pos == '\\') { tmp_ch = *pos; *pos = '\0'; ret = mkdir(temp, 0755); *pos = tmp_ch; } } if ((*(pos - 1) != '/') || (*(pos - 1) != '\\')) { ret = mkdir(temp, 0755); } av_free(temp); return ret; } static int replace_int_data_in_filename(char *buf, int buf_size, const char *filename, char placeholder, int64_t number) { const char *p; char *q, buf1[20], c; int nd, len, addchar_count; int found_count = 0; q = buf; 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) { len = snprintf(buf1, sizeof(buf1), "%0*"PRId64, (number < 0) ? nd : nd++, number); if (len < 1) // returned error or empty buf1 goto fail; if ((q - buf + len) > buf_size - 1) goto fail; memcpy(q, buf1, len); q += len; p += (addchar_count + 1); addchar_count = 0; found_count++; } } else addchar_count = 1; while (addchar_count--) if ((q - buf) < buf_size - 1) *q++ = *p++; else goto fail; } *q = '\0'; return found_count; fail: *q = '\0'; return -1; } static int hls_delete_old_segments(AVFormatContext *s, HLSContext *hls) { HLSSegment *segment, *previous_segment = NULL; float playlist_duration = 0.0f; int ret = 0, path_size, sub_path_size; char *dirname = NULL, *p, *sub_path; char *path = NULL; AVDictionary *options = NULL; AVIOContext *out = NULL; const char *proto = NULL; segment = hls->segments; while (segment) { playlist_duration += segment->duration; segment = segment->next; } segment = hls->old_segments; while (segment) { playlist_duration -= segment->duration; previous_segment = segment; segment = previous_segment->next; if (playlist_duration <= -previous_segment->duration) { 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(hls->avf->filename); } if (!dirname) { ret = AVERROR(ENOMEM); goto fail; } p = (char *)av_basename(dirname); *p = '\0'; } while (segment) { 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->filename); if (hls->method || (proto && !av_strcasecmp(proto, "http"))) { av_dict_set(&options, "method", "DELETE", 0); if ((ret = hls->avf->io_open(hls->avf, &out, path, AVIO_FLAG_WRITE, &options)) < 0) goto fail; ff_format_io_close(hls->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 = hls->avf->io_open(hls->avf, &out, sub_path, AVIO_FLAG_WRITE, &options)) < 0) { av_free(sub_path); goto fail; } ff_format_io_close(hls->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 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 read_chomp_line(AVIOContext *s, char *buf, int maxlen) { int len = ff_get_line(s, buf, maxlen); while (len > 0 && av_isspace(buf[len - 1])) buf[--len] = '\0'; return len; } static int hls_mux_init(AVFormatContext *s) { HLSContext *hls = s->priv_data; AVFormatContext *oc; AVFormatContext *vtt_oc = NULL; int i, ret; ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL); if (ret < 0) return ret; oc = hls->avf; oc->filename[0] = '\0'; oc->oformat = hls->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(hls->vtt_oformat) { ret = avformat_alloc_output_context2(&hls->vtt_avf, hls->vtt_oformat, NULL, NULL); if (ret < 0) return ret; vtt_oc = hls->vtt_avf; vtt_oc->oformat = hls->vtt_oformat; av_dict_copy(&vtt_oc->metadata, s->metadata, 0); } for (i = 0; i < s->nb_streams; i++) { AVStream *st; AVFormatContext *loc; if (s->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, s->streams[i]->codecpar); st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio; st->time_base = s->streams[i]->time_base; av_dict_copy(&st->metadata, s->streams[i]->metadata, 0); } hls->start_pos = 0; hls->new_start = 1; 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, HLSSegment *en, double duration, int64_t pos, int64_t size) { if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) && strlen(hls->current_segment_final_filename_fmt)) { av_strlcpy(hls->avf->filename, hls->current_segment_final_filename_fmt, sizeof(hls->avf->filename)); if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) { char * filename = av_strdup(hls->avf->filename); // %%s will be %s after strftime if (!filename) { av_free(en); return AVERROR(ENOMEM); } if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename), filename, '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", filename); av_free(filename); av_free(en); return AVERROR(EINVAL); } av_free(filename); } if (hls->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) { char * filename = av_strdup(hls->avf->filename); // %%t will be %t after strftime if (!filename) { av_free(en); return AVERROR(ENOMEM); } if (replace_int_data_in_filename(hls->avf->filename, sizeof(hls->avf->filename), filename, '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", filename); av_free(filename); av_free(en); return AVERROR(EINVAL); } av_free(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 use_localtime 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 use_localtime 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 use_localtime to be true\n"); ret = AVERROR(EINVAL); } return ret; } static int sls_flag_check_duration_size(HLSContext *hls) { const char *proto = avio_find_protocol_name(hls->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, char *old_filename) { if ((hls->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) && strlen(hls->current_segment_final_filename_fmt)) { ff_rename(old_filename, hls->avf->filename, hls); } } static int sls_flag_use_localtime_filename(AVFormatContext *oc, HLSContext *c) { if (c->flags & HLS_SECOND_LEVEL_SEGMENT_INDEX) { char * filename = av_strdup(oc->filename); // %%d will be %d after strftime if (!filename) return AVERROR(ENOMEM); if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), #if FF_API_HLS_WRAP filename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) { #else filename, 'd', c->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", filename); av_free(filename); return AVERROR(EINVAL); } av_free(filename); } if (c->flags & (HLS_SECOND_LEVEL_SEGMENT_SIZE | HLS_SECOND_LEVEL_SEGMENT_DURATION)) { av_strlcpy(c->current_segment_final_filename_fmt, oc->filename, sizeof(c->current_segment_final_filename_fmt)); if (c->flags & HLS_SECOND_LEVEL_SEGMENT_SIZE) { char * filename = av_strdup(oc->filename); // %%s will be %s after strftime if (!filename) return AVERROR(ENOMEM); if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, '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", filename); av_free(filename); return AVERROR(EINVAL); } av_free(filename); } if (c->flags & HLS_SECOND_LEVEL_SEGMENT_DURATION) { char * filename = av_strdup(oc->filename); // %%t will be %t after strftime if (!filename) return AVERROR(ENOMEM); if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), filename, '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", filename); av_free(filename); return AVERROR(EINVAL); } av_free(filename); } } return 0; } /* Create a new segment and append it to the segment list */ static int hls_append_segment(struct AVFormatContext *s, HLSContext *hls, double duration, int64_t pos, int64_t size) { HLSSegment *en = av_malloc(sizeof(*en)); const char *filename; int ret; if (!en) return AVERROR(ENOMEM); ret = sls_flags_filename_process(s, hls, en, duration, pos, size); if (ret < 0) { return ret; } filename = av_basename(hls->avf->filename); if (hls->use_localtime_mkdir) { filename = hls->avf->filename; } if (find_segment_by_filename(hls->segments, filename) || find_segment_by_filename(hls->old_segments, filename)) { av_log(hls, AV_LOG_WARNING, "Duplicated segment filename detected: %s\n", filename); } av_strlcpy(en->filename, filename, sizeof(en->filename)); if(hls->has_subtitle) av_strlcpy(en->sub_filename, av_basename(hls->vtt_avf->filename), 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 (hls->discontinuity) { en->discont = 1; hls->discontinuity = 0; } if (hls->key_info_file) { 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 (!hls->segments) hls->segments = en; else hls->last_segment->next = en; hls->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 && hls->nb_entries >= hls->max_nb_segments) { en = hls->segments; hls->initial_prog_date_time += en->duration; hls->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 = hls->old_segments; hls->old_segments = en; if ((ret = hls_delete_old_segments(s, hls)) < 0) return ret; } else av_free(en); } else hls->nb_entries++; if (hls->max_seg_size > 0) { return 0; } hls->sequence++; return 0; } static int parse_playlist(AVFormatContext *s, const char *url) { HLSContext *hls = s->priv_data; AVIOContext *in; int ret = 0, is_segment = 0; int64_t new_start_pos; char line[1024]; const char *ptr; if ((ret = ffio_open_whitelist(&in, url, AVIO_FLAG_READ, &s->interrupt_callback, NULL, s->protocol_whitelist, s->protocol_blacklist)) < 0) return ret; read_chomp_line(in, line, sizeof(line)); if (strcmp(line, "#EXTM3U")) { ret = AVERROR_INVALIDDATA; goto fail; } hls->discontinuity = 0; while (!avio_feof(in)) { read_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 < hls->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); hls->sequence = tmp_sequence; } } else if (av_strstart(line, "#EXT-X-DISCONTINUITY", &ptr)) { is_segment = 1; hls->discontinuity = 1; } else if (av_strstart(line, "#EXTINF:", &ptr)) { is_segment = 1; hls->duration = atof(ptr); } else if (av_strstart(line, "#", NULL)) { continue; } else if (line[0]) { if (is_segment) { is_segment = 0; new_start_pos = avio_tell(hls->avf->pb); hls->size = new_start_pos - hls->start_pos; av_strlcpy(hls->avf->filename, line, sizeof(line)); ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size); if (ret < 0) goto fail; hls->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 void set_http_options(AVFormatContext *s, AVDictionary **options, HLSContext *c) { const char *proto = avio_find_protocol_name(s->filename); int http_base_proto = proto ? (!av_strcasecmp(proto, "http") || !av_strcasecmp(proto, "https")) : 0; 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); } } static void write_m3u8_head_block(HLSContext *hls, AVIOContext *out, int version, int target_duration, int64_t sequence) { avio_printf(out, "#EXTM3U\n"); avio_printf(out, "#EXT-X-VERSION:%d\n", version); if (hls->allowcache == 0 || hls->allowcache == 1) { avio_printf(out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES"); } avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration); avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence); av_log(hls, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence); } static void hls_rename_temp_file(AVFormatContext *s, AVFormatContext *oc) { size_t len = strlen(oc->filename); char final_filename[sizeof(oc->filename)]; av_strlcpy(final_filename, oc->filename, len); final_filename[len-4] = '\0'; ff_rename(oc->filename, final_filename, s); oc->filename[len-4] = '\0'; } static int hls_window(AVFormatContext *s, int last) { HLSContext *hls = s->priv_data; HLSSegment *en; int target_duration = 0; int ret = 0; AVIOContext *out = NULL; AVIOContext *sub_out = NULL; char temp_filename[1024]; int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries); int version = 3; const char *proto = avio_find_protocol_name(s->filename); int use_rename = proto && !strcmp(proto, "file"); static unsigned warned_non_file; char *key_uri = NULL; char *iv_string = NULL; AVDictionary *options = NULL; double prog_date_time = hls->initial_prog_date_time; int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0); if (byterange_mode) { version = 4; sequence = 0; } if (!use_rename && !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_rename ? "%s.tmp" : "%s", s->filename); if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &options)) < 0) goto fail; for (en = hls->segments; en; en = en->next) { if (target_duration <= en->duration) target_duration = get_int_from_double(en->duration); } hls->discontinuity_set = 0; write_m3u8_head_block(hls, out, version, target_duration, sequence); if (hls->pl_type == PLAYLIST_TYPE_EVENT) { avio_printf(out, "#EXT-X-PLAYLIST-TYPE:EVENT\n"); } else if (hls->pl_type == PLAYLIST_TYPE_VOD) { avio_printf(out, "#EXT-X-PLAYLIST-TYPE:VOD\n"); } if((hls->flags & HLS_DISCONT_START) && sequence==hls->start_sequence && hls->discontinuity_set==0 ){ avio_printf(out, "#EXT-X-DISCONTINUITY\n"); hls->discontinuity_set = 1; } for (en = hls->segments; en; en = en->next) { if (hls->key_info_file && (!key_uri || strcmp(en->key_uri, key_uri) || av_strcasecmp(en->iv_string, iv_string))) { avio_printf(out, "#EXT-X-KEY:METHOD=AES-128,URI=\"%s\"", en->key_uri); if (*en->iv_string) avio_printf(out, ",IV=0x%s", en->iv_string); avio_printf(out, "\n"); key_uri = en->key_uri; iv_string = en->iv_string; } if (en->discont) { avio_printf(out, "#EXT-X-DISCONTINUITY\n"); } if (hls->flags & HLS_ROUND_DURATIONS) avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration)); else avio_printf(out, "#EXTINF:%f,\n", en->duration); if (byterange_mode) avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n", en->size, en->pos); if (hls->flags & HLS_PROGRAM_DATE_TIME) { time_t tt, wrongsecs; int milli; struct tm *tm, tmpbuf; char buf0[128], buf1[128]; tt = (int64_t)prog_date_time; milli = av_clip(lrint(1000*(prog_date_time - tt)), 0, 999); tm = localtime_r(&tt, &tmpbuf); strftime(buf0, sizeof(buf0), "%Y-%m-%dT%H:%M:%S", tm); if (!strftime(buf1, sizeof(buf1), "%z", tm) || buf1[1]<'0' ||buf1[1]>'2') { int tz_min, dst = tm->tm_isdst; tm = gmtime_r(&tt, &tmpbuf); tm->tm_isdst = dst; wrongsecs = mktime(tm); tz_min = (abs(wrongsecs - tt) + 30) / 60; snprintf(buf1, sizeof(buf1), "%c%02d%02d", wrongsecs <= tt ? '+' : '-', tz_min / 60, tz_min % 60); } avio_printf(out, "#EXT-X-PROGRAM-DATE-TIME:%s.%03d%s\n", buf0, milli, buf1); prog_date_time += en->duration; } if (hls->baseurl) avio_printf(out, "%s", hls->baseurl); avio_printf(out, "%s\n", en->filename); } if (last && (hls->flags & HLS_OMIT_ENDLIST)==0) avio_printf(out, "#EXT-X-ENDLIST\n"); if( hls->vtt_m3u8_name ) { if ((ret = s->io_open(s, &sub_out, hls->vtt_m3u8_name, AVIO_FLAG_WRITE, &options)) < 0) goto fail; write_m3u8_head_block(hls, sub_out, version, target_duration, sequence); for (en = hls->segments; en; en = en->next) { avio_printf(sub_out, "#EXTINF:%f,\n", en->duration); if (byterange_mode) avio_printf(sub_out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n", en->size, en->pos); if (hls->baseurl) avio_printf(sub_out, "%s", hls->baseurl); avio_printf(sub_out, "%s\n", en->sub_filename); } if (last) avio_printf(sub_out, "#EXT-X-ENDLIST\n"); } fail: av_dict_free(&options); ff_format_io_close(s, &out); ff_format_io_close(s, &sub_out); if (ret >= 0 && use_rename) ff_rename(temp_filename, s->filename, s); return ret; } static int hls_start(AVFormatContext *s) { HLSContext *c = s->priv_data; AVFormatContext *oc = c->avf; AVFormatContext *vtt_oc = c->vtt_avf; AVDictionary *options = NULL; char *filename, iv_string[KEYSIZE*2 + 1]; int err = 0; if (c->flags & HLS_SINGLE_FILE) { av_strlcpy(oc->filename, c->basename, sizeof(oc->filename)); if (c->vtt_basename) av_strlcpy(vtt_oc->filename, c->vtt_basename, sizeof(vtt_oc->filename)); } else if (c->max_seg_size > 0) { if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), #if FF_API_HLS_WRAP c->basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) { #else c->basename, 'd', c->sequence) < 1) { #endif av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s', you can try to use -use_localtime 1 with it\n", c->basename); return AVERROR(EINVAL); } } else { if (c->use_localtime) { time_t now0; struct tm *tm, tmpbuf; time(&now0); tm = localtime_r(&now0, &tmpbuf); if (!strftime(oc->filename, sizeof(oc->filename), c->basename, tm)) { av_log(oc, AV_LOG_ERROR, "Could not get segment filename with use_localtime\n"); return AVERROR(EINVAL); } err = sls_flag_use_localtime_filename(oc, c); if (err < 0) { return AVERROR(ENOMEM); } if (c->use_localtime_mkdir) { const char *dir; char *fn_copy = av_strdup(oc->filename); if (!fn_copy) { return AVERROR(ENOMEM); } dir = av_dirname(fn_copy); if (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 if (replace_int_data_in_filename(oc->filename, sizeof(oc->filename), #if FF_API_HLS_WRAP c->basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) { #else c->basename, 'd', c->sequence) < 1) { #endif av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try to use -use_localtime 1 with it\n", c->basename); return AVERROR(EINVAL); } if( c->vtt_basename) { if (replace_int_data_in_filename(vtt_oc->filename, sizeof(vtt_oc->filename), #if FF_API_HLS_WRAP c->vtt_basename, 'd', c->wrap ? c->sequence % c->wrap : c->sequence) < 1) { #else c->vtt_basename, 'd', c->sequence) < 1) { #endif av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename); return AVERROR(EINVAL); } } } c->number++; set_http_options(s, &options, c); if (c->flags & HLS_TEMP_FILE) { av_strlcat(oc->filename, ".tmp", sizeof(oc->filename)); } if (c->key_info_file) { if ((err = hls_encryption_start(s)) < 0) goto fail; 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, c->sequence); if ((err = av_dict_set(&options, "encryption_iv", iv_string, 0)) < 0) goto fail; filename = av_asprintf("crypto:%s", oc->filename); if (!filename) { err = AVERROR(ENOMEM); goto fail; } err = s->io_open(s, &oc->pb, filename, AVIO_FLAG_WRITE, &options); av_free(filename); av_dict_free(&options); if (err < 0) return err; } else if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, &options)) < 0) goto fail; if (c->vtt_basename) { set_http_options(s, &options, c); if ((err = s->io_open(s, &vtt_oc->pb, vtt_oc->filename, AVIO_FLAG_WRITE, &options)) < 0) goto fail; } av_dict_free(&options); /* 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 (c->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(void) { char b[21]; time_t t = time(NULL); struct tm *p, tmbuf; 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 return (HAVE_LIBC_MSVCRT || !strftime(b, sizeof(b), "%s", p) || !strcmp(b, "%s")) ? "-%Y%m%d%H%M%S.ts" : "-%s.ts"; } static int hls_write_header(AVFormatContext *s) { HLSContext *hls = s->priv_data; int ret, i; char *p; const char *pattern = "%d.ts"; const char *pattern_localtime_fmt = get_default_pattern_localtime_fmt(); const char *vtt_pattern = "%d.vtt"; AVDictionary *options = NULL; int basename_size; int vtt_basename_size; 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->sequence = hls->start_sequence; hls->recording_time = (hls->init_time ? hls->init_time : hls->time) * AV_TIME_BASE; hls->start_pts = AV_NOPTS_VALUE; hls->current_segment_final_filename_fmt[0] = '\0'; if (hls->flags & HLS_PROGRAM_DATE_TIME) { time_t now0; time(&now0); hls->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 (i = 0; i < s->nb_streams; i++) { hls->has_video += s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO; hls->has_subtitle += s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE; } if (hls->has_video > 1) av_log(s, AV_LOG_WARNING, "More than a single video stream present, " "expect issues decoding it.\n"); hls->oformat = av_guess_format("mpegts", NULL, NULL); if (!hls->oformat) { ret = AVERROR_MUXER_NOT_FOUND; goto fail; } if(hls->has_subtitle) { hls->vtt_oformat = av_guess_format("webvtt", NULL, NULL); if (!hls->oformat) { ret = AVERROR_MUXER_NOT_FOUND; goto fail; } } if (hls->segment_filename) { hls->basename = av_strdup(hls->segment_filename); if (!hls->basename) { ret = AVERROR(ENOMEM); goto fail; } } else { if (hls->flags & HLS_SINGLE_FILE) pattern = ".ts"; if (hls->use_localtime) { basename_size = strlen(s->filename) + strlen(pattern_localtime_fmt) + 1; } else { basename_size = strlen(s->filename) + strlen(pattern) + 1; } hls->basename = av_malloc(basename_size); if (!hls->basename) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(hls->basename, s->filename, basename_size); p = strrchr(hls->basename, '.'); if (p) *p = '\0'; if (hls->use_localtime) { av_strlcat(hls->basename, pattern_localtime_fmt, basename_size); } else { av_strlcat(hls->basename, pattern, basename_size); } } 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); if (ret < 0) { goto fail; } } if(hls->has_subtitle) { if (hls->flags & HLS_SINGLE_FILE) vtt_pattern = ".vtt"; vtt_basename_size = strlen(s->filename) + strlen(vtt_pattern) + 1; hls->vtt_basename = av_malloc(vtt_basename_size); if (!hls->vtt_basename) { ret = AVERROR(ENOMEM); goto fail; } hls->vtt_m3u8_name = av_malloc(vtt_basename_size); if (!hls->vtt_m3u8_name ) { ret = AVERROR(ENOMEM); goto fail; } av_strlcpy(hls->vtt_basename, s->filename, vtt_basename_size); p = strrchr(hls->vtt_basename, '.'); if (p) *p = '\0'; if( hls->subtitle_filename ) { strcpy(hls->vtt_m3u8_name, hls->subtitle_filename); } else { strcpy(hls->vtt_m3u8_name, hls->vtt_basename); av_strlcat(hls->vtt_m3u8_name, "_vtt.m3u8", vtt_basename_size); } av_strlcat(hls->vtt_basename, vtt_pattern, vtt_basename_size); } if ((ret = hls_mux_init(s)) < 0) goto fail; if (hls->flags & HLS_APPEND_LIST) { parse_playlist(s, s->filename); hls->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)) < 0) goto fail; av_dict_copy(&options, hls->format_options, 0); ret = avformat_write_header(hls->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); goto fail; } //av_assert0(s->nb_streams == hls->avf->nb_streams); for (i = 0; i < s->nb_streams; i++) { AVStream *inner_st; AVStream *outer_st = s->streams[i]; 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 = hls->avf->streams[i]; else if (hls->vtt_avf) inner_st = hls->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); } fail: av_dict_free(&options); if (ret < 0) { av_freep(&hls->basename); av_freep(&hls->vtt_basename); if (hls->avf) avformat_free_context(hls->avf); if (hls->vtt_avf) avformat_free_context(hls->vtt_avf); } 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 = hls->recording_time * hls->number; int is_ref_pkt = 1; int ret, can_split = 1; int stream_index = 0; if (hls->sequence - hls->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 * hls->nb_entries * AV_TIME_BASE; int after_init_list_dur = (hls->sequence - hls->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( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE ) { oc = hls->vtt_avf; stream_index = 0; } else { oc = hls->avf; stream_index = pkt->stream_index; } if (hls->start_pts == AV_NOPTS_VALUE) { hls->start_pts = pkt->pts; hls->end_pts = pkt->pts; } if (hls->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; } if (pkt->pts == AV_NOPTS_VALUE) is_ref_pkt = can_split = 0; if (is_ref_pkt) { if (hls->new_start) { hls->new_start = 0; hls->duration = (double)(pkt->pts - hls->end_pts) * st->time_base.num / st->time_base.den; hls->dpp = (double)(pkt->duration) * st->time_base.num / st->time_base.den; } else { hls->duration += (double)(pkt->duration) * st->time_base.num / st->time_base.den; } } if (can_split && av_compare_ts(pkt->pts - hls->start_pts, st->time_base, end_pts, AV_TIME_BASE_Q) >= 0) { int64_t new_start_pos; char *old_filename = av_strdup(hls->avf->filename); int byterange_mode = (hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size > 0); if (!old_filename) { return AVERROR(ENOMEM); } av_write_frame(oc, NULL); /* Flush any buffered data */ new_start_pos = avio_tell(hls->avf->pb); hls->size = new_start_pos - hls->start_pos; if (!byterange_mode) { ff_format_io_close(s, &oc->pb); if (hls->vtt_avf) { ff_format_io_close(s, &hls->vtt_avf->pb); } } if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) { if (!(hls->flags & HLS_SINGLE_FILE) || (hls->max_seg_size <= 0)) if (hls->avf->oformat->priv_class && hls->avf->priv_data) av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0); hls_rename_temp_file(s, oc); } ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size); hls->start_pos = new_start_pos; if (ret < 0) { av_free(old_filename); return ret; } hls->end_pts = pkt->pts; hls->duration = 0; if (hls->flags & HLS_SINGLE_FILE) { hls->number++; } else if (hls->max_seg_size > 0) { if (hls->start_pos >= hls->max_seg_size) { hls->sequence++; sls_flag_file_rename(hls, old_filename); ret = hls_start(s); hls->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, */ hls->number--; } hls->number++; } else { sls_flag_file_rename(hls, old_filename); ret = hls_start(s); } if (ret < 0) { av_free(old_filename); return ret; } if ((ret = hls_window(s, 0)) < 0) { av_free(old_filename); return ret; } } 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 = hls->avf; AVFormatContext *vtt_oc = hls->vtt_avf; char *old_filename = av_strdup(hls->avf->filename); if (!old_filename) { return AVERROR(ENOMEM); } av_write_trailer(oc); if (oc->pb) { hls->size = avio_tell(hls->avf->pb) - hls->start_pos; ff_format_io_close(s, &oc->pb); if ((hls->flags & HLS_TEMP_FILE) && oc->filename[0]) { hls_rename_temp_file(s, oc); } /* after av_write_trailer, then duration + 1 duration per packet */ hls_append_segment(s, hls, hls->duration + hls->dpp, hls->start_pos, hls->size); } sls_flag_file_rename(hls, old_filename); if (vtt_oc) { if (vtt_oc->pb) av_write_trailer(vtt_oc); hls->size = avio_tell(hls->vtt_avf->pb) - hls->start_pos; ff_format_io_close(s, &vtt_oc->pb); } av_freep(&hls->basename); avformat_free_context(oc); hls->avf = NULL; hls_window(s, 1); if (vtt_oc) { av_freep(&hls->vtt_basename); av_freep(&hls->vtt_m3u8_name); avformat_free_context(vtt_oc); } hls_free_segments(hls->segments); hls_free_segments(hls->old_segments); av_free(old_filename); return 0; } #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_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_subtitle_path", "set path of hls subtitles", OFFSET(subtitle_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 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"}, {"use_localtime", "set filename expansion with strftime at segment creation", OFFSET(use_localtime), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E }, {"use_localtime_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" }, { 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_ALLOW_FLUSH, .write_header = hls_write_header, .write_packet = hls_write_packet, .write_trailer = hls_write_trailer, .priv_class = &hls_class, };