| /* |
| * 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 <float.h> |
| #include <stdint.h> |
| #if HAVE_UNISTD_H |
| #include <unistd.h> |
| #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; |
| } |
| |
| /* 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); |
| |
| 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); |
| } |
| } |
| |
| |
| 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); |
| } |
| 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); |
| } |
| } |
| 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) { |
| 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); |
| goto fail; |
| } |
| 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); |
| goto fail; |
| } |
| 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); |
| goto fail; |
| } |
| } else { |
| const char *proto = avio_find_protocol_name(hls->basename); |
| int segment_renaming_ok = proto && !strcmp(proto, "file"); |
| |
| 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); |
| goto fail; |
| } |
| 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); |
| 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); |
| |
| 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; |
| |
| 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++; |
| 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); |
| } |
| 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 { |
| 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); |
| } |
| |
| 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); |
| } |
| |
| 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); |
| } |
| |
| 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, |
| }; |