| @@ -120,6 +120,8 @@ struct playlist { · 119 unmodified lines |
| 120 | enum PlaylistType type; | 120 | enum PlaylistType type; |
| 121 | int64_t target_duration; | 121 | int64_t target_duration; |
| 122 | int64_t start_seq_no; | 122 | int64_t start_seq_no; |
| | 123 | int time_offset_flag; |
| | 124 | int64_t start_time_offset; |
| 123 | int n_segments; | 125 | int n_segments; |
| 124 | struct segment **segments; | 126 | struct segment **segments; |
| 125 | int needed; | 127 | int needed; |
| @@ -211,6 +213,7 @@ typedef struct HLSContext { · 85 unmodified lines |
| 211 | int64_t cur_seq_no; | 213 | int64_t cur_seq_no; |
| 212 | int m3u8_hold_counters; | 214 | int m3u8_hold_counters; |
| 213 | int live_start_index; | 215 | int live_start_index; |
| | 216 | int prefer_x_start; |
| 214 | int first_packet; | 217 | int first_packet; |
| 215 | int64_t first_timestamp; | 218 | int64_t first_timestamp; |
| 216 | int64_t cur_timestamp; | 219 | int64_t cur_timestamp; |
| @@ -889,6 +892,21 @@ static int parse_playlist(HLSContext *c, const char *url, · 672 unmodified lines |
| 889 | cur_init_section->key = NULL; | 892 | cur_init_section->key = NULL; |
| 890 | } | 893 | } |
| 891 | | 894 | |
| | 895 | } else if (av_strstart(line, "#EXT-X-START:", &ptr)) { |
| | 896 | const char *time_offset_value = NULL; |
| | 897 | ret = ensure_playlist(c, &pls, url); |
| | 898 | if (ret < 0) { |
| | 899 | goto fail; |
| | 900 | } |
| | 901 | if (av_strstart(ptr, "TIME-OFFSET=", &time_offset_value)) { |
| | 902 | float offset = strtof(time_offset_value, NULL); |
| | 903 | pls->start_time_offset = offset * AV_TIME_BASE; |
| | 904 | pls->time_offset_flag = 1; |
| | 905 | } else { |
| | 906 | av_log(c->ctx, AV_LOG_WARNING, "#EXT-X-START value is" |
| | 907 | "invalid, it will be ignored"); |
| | 908 | continue; |
| | 909 | } |
| 892 | } else if (av_strstart(line, "#EXT-X-ENDLIST", &ptr)) { | 910 | } else if (av_strstart(line, "#EXT-X-ENDLIST", &ptr)) { |
| 893 | if (pls) | 911 | if (pls) |
| 894 | pls->finished = 1; | 912 | pls->finished = 1; |
| @@ -1722,9 +1740,45 @@ static int64_t select_cur_seq_no(HLSContext *c, struct playlist *pls) · 827 unmodified lines |
| 1722 | /* If this is a live stream, start live_start_index segments from the | 1740 | /* If this is a live stream, start live_start_index segments from the |
| 1723 | * start or end */ | 1741 | * start or end */ |
| 1724 | if (c->live_start_index < 0) | 1742 | if (c->live_start_index < 0) |
| 1725 | return pls->start_seq_no + FFMAX(pls->n_segments + c->live_start_index, 0); | 1743 | seq_no = pls->start_seq_no + FFMAX(pls->n_segments + |
| | 1744 | c->live_start_index, 0); |
| 1726 | else | 1745 | else |
| 1727 | return pls->start_seq_no + FFMIN(c->live_start_index, pls->n_segments - 1); | 1746 | seq_no = pls->start_seq_no + FFMIN(c->live_start_index, |
| | 1747 | pls->n_segments - 1); |
| | 1748 | |
| | 1749 | /* If #EXT-X-START in playlist, need to recalculate */ |
| | 1750 | if (pls->time_offset_flag && c->prefer_x_start) { |
| | 1751 | int64_t start_timestamp; |
| | 1752 | int64_t playlist_duration = 0; |
| | 1753 | int64_t cur_timestamp = c->cur_timestamp == AV_NOPTS_VALUE ? 0 : |
| | 1754 | c->cur_timestamp; |
| | 1755 | |
| | 1756 | for (int i = 0; i < pls->n_segments; i++) |
| | 1757 | playlist_duration += pls->segments[i]->duration; |
| | 1758 | |
| | 1759 | /* If the absolute value of TIME-OFFSET exceeds |
| | 1760 | * the duration of the playlist, it indicates either the end of the |
| | 1761 | * playlist (if positive) or the beginning of the playlist (if |
| | 1762 | * negative). */ |
| | 1763 | if (pls->start_time_offset >=0 && |
| | 1764 | pls->start_time_offset > playlist_duration) |
| | 1765 | start_timestamp = cur_timestamp + playlist_duration; |
| | 1766 | else if (pls->start_time_offset >= 0 && |
| | 1767 | pls->start_time_offset <= playlist_duration) |
| | 1768 | start_timestamp = cur_timestamp + pls->start_time_offset; |
| | 1769 | else if (pls->start_time_offset < 0 && |
| | 1770 | pls->start_time_offset < -playlist_duration) |
| | 1771 | start_timestamp = cur_timestamp; |
| | 1772 | else if (pls->start_time_offset < 0 && |
| | 1773 | pls->start_time_offset > -playlist_duration) |
| | 1774 | start_timestamp = cur_timestamp + playlist_duration + |
| | 1775 | pls->start_time_offset; |
| | 1776 | else |
| | 1777 | start_timestamp = cur_timestamp; |
| | 1778 | |
| | 1779 | find_timestamp_in_playlist(c, pls, start_timestamp, &seq_no, NULL); |
| | 1780 | } |
| | 1781 | return seq_no; |
| 1728 | } | 1782 | } |
| 1729 | | 1783 | |
| 1730 | /* Otherwise just start on the first segment. */ | 1784 | /* Otherwise just start on the first segment. */ |
| @@ -2476,6 +2530,8 @@ static int hls_probe(const AVProbeData *p) · 745 unmodified lines |
| 2476 | static const AVOption hls_options[] = { | 2530 | static const AVOption hls_options[] = { |
| 2477 | {"live_start_index", "segment index to start live streams at (negative values are from the end)", | 2531 | {"live_start_index", "segment index to start live streams at (negative values are from the end)", |
| 2478 | OFFSET(live_start_index), AV_OPT_TYPE_INT, {.i64 = -3}, INT_MIN, INT_MAX, FLAGS}, | 2532 | OFFSET(live_start_index), AV_OPT_TYPE_INT, {.i64 = -3}, INT_MIN, INT_MAX, FLAGS}, |
| | 2533 | {"prefer_x_start", "prefer to use #EXT-X-START if it's in playlist instead of live_start_index", |
| | 2534 | OFFSET(prefer_x_start), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS}, |
| 2479 | {"allowed_extensions", "List of file extensions that hls is allowed to access", | 2535 | {"allowed_extensions", "List of file extensions that hls is allowed to access", |
| 2480 | OFFSET(allowed_extensions), AV_OPT_TYPE_STRING, | 2536 | OFFSET(allowed_extensions), AV_OPT_TYPE_STRING, |
| 2481 | {.str = "3gp,aac,avi,ac3,eac3,flac,mkv,m3u8,m4a,m4s,m4v,mpg,mov,mp2,mp3,mp4,mpeg,mpegts,ogg,ogv,oga,ts,vob,wav"}, | 2537 | {.str = "3gp,aac,avi,ac3,eac3,flac,mkv,m3u8,m4a,m4s,m4v,mpg,mov,mp2,mp3,mp4,mpeg,mpegts,ogg,ogv,oga,ts,vob,wav"}, |