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-rw-r--r--libavformat/hlsenc.c808
1 files changed, 697 insertions, 111 deletions
diff --git a/libavformat/hlsenc.c b/libavformat/hlsenc.c
index 96b780fe37..a9fa5d8aef 100644
--- a/libavformat/hlsenc.c
+++ b/libavformat/hlsenc.c
@@ -2,40 +2,74 @@
* Apple HTTP Live Streaming segmenter
* Copyright (c) 2012, Luca Barbato
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * 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.
*
- * Libav is distributed in the hope that it will be useful,
+ * 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 Libav; if not, write to the Free Software
+ * 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"
-
-typedef struct ListEntry {
- char name[1024];
- int64_t duration; // segment duration in AV_TIME_BASE units
- struct ListEntry *next;
-} ListEntry;
+#include "os_support.h"
+
+#define KEYSIZE 16
+#define LINE_BUFFER_SIZE 1024
+
+typedef struct HLSSegment {
+ char filename[1024];
+ char sub_filename[1024];
+ double duration; /* in seconds */
+ 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),
+} 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.
@@ -43,76 +77,309 @@ typedef struct HLSContext {
int64_t sequence;
int64_t start_sequence;
AVOutputFormat *oformat;
+ AVOutputFormat *vtt_oformat;
+
AVFormatContext *avf;
+ AVFormatContext *vtt_avf;
+
float time; // Set by a private option.
- int size; // Set by a private option.
+ int max_nb_segments; // Set by a private option.
int wrap; // Set by a private option.
- int version; // Set by a private option.
- int allowcache;
+ 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;
- // The following timestamps are in AV_TIME_BASE units.
+ int has_subtitle;
int64_t start_pts;
int64_t end_pts;
- int64_t duration; // last segment duration computed so far.
+ double duration; // last segment duration computed so far, in seconds
+ int64_t start_pos; // last segment starting position
+ int64_t size; // last segment size
int nb_entries;
- ListEntry *list;
- ListEntry *end_list;
+ int discontinuity_set;
+
+ 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;
+
} HLSContext;
+static int hls_delete_old_segments(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;
+
+ 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) {
+ 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 = strlen(dirname) + strlen(segment->filename) + 1;
+ path = av_malloc(path_size);
+ if (!path) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ av_strlcpy(path, dirname, path_size);
+ av_strlcat(path, segment->filename, path_size);
+ 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(dirname) + strlen(segment->sub_filename) + 1;
+ 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 (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 hls_mux_init(AVFormatContext *s)
{
HLSContext *hls = s->priv_data;
AVFormatContext *oc;
- int i;
+ AVFormatContext *vtt_oc = NULL;
+ int i, ret;
- hls->avf = oc = avformat_alloc_context();
- if (!oc)
- return AVERROR(ENOMEM);
+ ret = avformat_alloc_output_context2(&hls->avf, hls->oformat, NULL, NULL);
+ if (ret < 0)
+ return ret;
+ oc = hls->avf;
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;
- if (!(st = avformat_new_stream(oc, NULL)))
+ 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;
}
+ hls->start_pos = 0;
return 0;
}
-static int append_entry(HLSContext *hls, int64_t duration)
+/* 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)
{
- ListEntry *en = av_malloc(sizeof(*en));
+ HLSSegment *en = av_malloc(sizeof(*en));
+ char *tmp, *p;
+ const char *pl_dir, *filename;
+ int ret;
if (!en)
return AVERROR(ENOMEM);
- av_strlcpy(en->name, av_basename(hls->avf->filename), sizeof(en->name));
+ filename = av_basename(hls->avf->filename);
- en->duration = duration;
- en->next = NULL;
+ if (hls->use_localtime_mkdir) {
+ /* Possibly prefix with mkdir'ed subdir, if playlist share same
+ * base path. */
+ tmp = av_strdup(s->filename);
+ if (!tmp) {
+ av_free(en);
+ return AVERROR(ENOMEM);
+ }
- if (!hls->list)
- hls->list = en;
+ pl_dir = av_dirname(tmp);
+ p = hls->avf->filename;
+ if (strstr(p, pl_dir) == p)
+ filename = hls->avf->filename + strlen(pl_dir) + 1;
+ av_free(tmp);
+ }
+ 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
- hls->end_list->next = en;
+ en->sub_filename[0] = '\0';
- hls->end_list = en;
+ en->duration = duration;
+ en->pos = pos;
+ en->size = size;
+ en->next = NULL;
- if (hls->nb_entries >= hls->size) {
- en = hls->list;
- hls->list = en->next;
- av_free(en);
+ 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->segments = en->next;
+ if (en && hls->flags & HLS_DELETE_SEGMENTS &&
+ !(hls->flags & HLS_SINGLE_FILE || hls->wrap)) {
+ en->next = hls->old_segments;
+ hls->old_segments = en;
+ if ((ret = hls_delete_old_segments(hls)) < 0)
+ return ret;
+ } else
+ av_free(en);
} else
hls->nb_entries++;
@@ -121,9 +388,9 @@ static int append_entry(HLSContext *hls, int64_t duration)
return 0;
}
-static void free_entries(HLSContext *hls)
+static void hls_free_segments(HLSSegment *p)
{
- ListEntry *p = hls->list, *en;
+ HLSSegment *en;
while(p) {
en = p;
@@ -132,57 +399,124 @@ static void free_entries(HLSContext *hls)
}
}
+static void set_http_options(AVDictionary **options, HLSContext *c)
+{
+ if (c->method)
+ av_dict_set(options, "method", c->method, 0);
+}
+
static int hls_window(AVFormatContext *s, int last)
{
HLSContext *hls = s->priv_data;
- ListEntry *en;
- int64_t target_duration = 0;
+ 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->size);
-
- snprintf(temp_filename, sizeof(temp_filename), "%s.tmp", s->filename);
- if ((ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, NULL)) < 0)
+ int64_t sequence = FFMAX(hls->start_sequence, hls->sequence - hls->nb_entries);
+ int version = hls->flags & HLS_SINGLE_FILE ? 4 : 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;
+
+ 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 temporarly partial files\n");
+
+ set_http_options(&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->list; en; en = en->next) {
+ for (en = hls->segments; en; en = en->next) {
if (target_duration < en->duration)
- target_duration = en->duration;
+ target_duration = ceil(en->duration);
}
+ hls->discontinuity_set = 0;
avio_printf(out, "#EXTM3U\n");
- avio_printf(out, "#EXT-X-VERSION:%d\n", hls->version);
+ 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:%"PRId64"\n",
- av_rescale_rnd(target_duration, 1, AV_TIME_BASE,
- AV_ROUND_UP));
+ avio_printf(out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
avio_printf(out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", 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");
+ }
av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
sequence);
-
- for (en = hls->list; en; en = en->next) {
- if (hls->version > 2)
- avio_printf(out, "#EXTINF:%f\n",
- (double)en->duration / AV_TIME_BASE);
+ 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 (hls->flags & HLS_ROUND_DURATIONS)
+ avio_printf(out, "#EXTINF:%ld,\n", lrint(en->duration));
else
- avio_printf(out, "#EXTINF:%"PRId64",\n",
- av_rescale(en->duration, 1, AV_TIME_BASE));
+ avio_printf(out, "#EXTINF:%f,\n", en->duration);
+ if (hls->flags & HLS_SINGLE_FILE)
+ avio_printf(out, "#EXT-X-BYTERANGE:%"PRIi64"@%"PRIi64"\n",
+ en->size, en->pos);
if (hls->baseurl)
avio_printf(out, "%s", hls->baseurl);
- avio_printf(out, "%s\n", en->name);
+ avio_printf(out, "%s\n", en->filename);
}
- if (last)
+ 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;
+ avio_printf(sub_out, "#EXTM3U\n");
+ avio_printf(sub_out, "#EXT-X-VERSION:%d\n", version);
+ if (hls->allowcache == 0 || hls->allowcache == 1) {
+ avio_printf(sub_out, "#EXT-X-ALLOW-CACHE:%s\n", hls->allowcache == 0 ? "NO" : "YES");
+ }
+ avio_printf(sub_out, "#EXT-X-TARGETDURATION:%d\n", target_duration);
+ avio_printf(sub_out, "#EXT-X-MEDIA-SEQUENCE:%"PRId64"\n", sequence);
+
+ av_log(s, AV_LOG_VERBOSE, "EXT-X-MEDIA-SEQUENCE:%"PRId64"\n",
+ sequence);
+
+ for (en = hls->segments; en; en = en->next) {
+ avio_printf(sub_out, "#EXTINF:%f,\n", en->duration);
+ if (hls->flags & HLS_SINGLE_FILE)
+ 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);
- if (ret >= 0)
- ff_rename(temp_filename, s->filename);
+ ff_format_io_close(s, &sub_out);
+ if (ret >= 0 && use_rename)
+ ff_rename(temp_filename, s->filename, s);
return ret;
}
@@ -190,20 +524,113 @@ 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 (av_get_frame_filename(oc->filename, sizeof(oc->filename),
- c->basename, c->wrap ? c->sequence % c->wrap : c->sequence) < 0)
- return AVERROR(EINVAL);
+ 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->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->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(dir, 0777) == -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 (av_get_frame_filename(oc->filename, sizeof(oc->filename),
+ c->basename, c->wrap ? c->sequence % c->wrap : c->sequence) < 0) {
+ av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s' you can try use -use_localtime 1 with it\n", c->basename);
+ return AVERROR(EINVAL);
+ }
+ if( c->vtt_basename) {
+ if (av_get_frame_filename(vtt_oc->filename, sizeof(vtt_oc->filename),
+ c->vtt_basename, c->wrap ? c->sequence % c->wrap : c->sequence) < 0) {
+ av_log(vtt_oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", c->vtt_basename);
+ return AVERROR(EINVAL);
+ }
+ }
+ }
c->number++;
- if ((err = s->io_open(s, &oc->pb, oc->filename, AVIO_FLAG_WRITE, NULL)) < 0)
- return err;
+ set_http_options(&options, c);
+
+ 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(&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);
- if (oc->oformat->priv_class && oc->priv_data)
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 int hls_write_header(AVFormatContext *s)
@@ -212,15 +639,30 @@ static int hls_write_header(AVFormatContext *s)
int ret, i;
char *p;
const char *pattern = "%d.ts";
- int basename_size = strlen(s->filename) + strlen(pattern) + 1;
+ const char *pattern_localtime_fmt = "-%s.ts";
+ const char *vtt_pattern = "%d.vtt";
+ AVDictionary *options = NULL;
+ int basename_size;
+ int vtt_basename_size;
hls->sequence = hls->start_sequence;
hls->recording_time = hls->time * AV_TIME_BASE;
hls->start_pts = AV_NOPTS_VALUE;
- for (i = 0; i < s->nb_streams; i++)
+ 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,
@@ -234,21 +676,75 @@ static int hls_write_header(AVFormatContext *s)
goto fail;
}
- hls->basename = av_malloc(basename_size);
-
- if (!hls->basename) {
- ret = AVERROR(ENOMEM);
- 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;
+ }
}
- strcpy(hls->basename, s->filename);
-
- p = strrchr(hls->basename, '.');
-
- if (p)
- *p = '\0';
+ 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);
+ }
+ }
- av_strlcat(hls->basename, pattern, basename_size);
+ 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;
@@ -256,15 +752,39 @@ static int hls_write_header(AVFormatContext *s)
if ((ret = hls_start(s)) < 0)
goto fail;
- if ((ret = avformat_write_header(hls->avf, NULL)) < 0)
- return ret;
-
-
+ 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 (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:
- if (ret) {
- av_free(hls->basename);
+
+ 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;
}
@@ -272,49 +792,77 @@ fail:
static int hls_write_packet(AVFormatContext *s, AVPacket *pkt)
{
HLSContext *hls = s->priv_data;
- AVFormatContext *oc = hls->avf;
+ AVFormatContext *oc = NULL;
AVStream *st = s->streams[pkt->stream_index];
int64_t end_pts = hls->recording_time * hls->number;
- int64_t pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q);
+ int is_ref_pkt = 1;
int ret, can_split = 1;
+ int stream_index = 0;
+ 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 = pts;
- hls->end_pts = pts;
+ 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;
+ is_ref_pkt = st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO;
}
if (pkt->pts == AV_NOPTS_VALUE)
- can_split = 0;
- else
- hls->duration = pts - hls->end_pts;
+ is_ref_pkt = can_split = 0;
+
+ if (is_ref_pkt)
+ hls->duration = (double)(pkt->pts - hls->end_pts)
+ * 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;
+ av_write_frame(oc, NULL); /* Flush any buffered data */
- if (can_split && pts - hls->start_pts >= end_pts) {
- ret = append_entry(hls, hls->duration);
- if (ret)
+ new_start_pos = avio_tell(hls->avf->pb);
+ hls->size = new_start_pos - hls->start_pos;
+ ret = hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
+ hls->start_pos = new_start_pos;
+ if (ret < 0)
return ret;
- hls->end_pts = pts;
+ hls->end_pts = pkt->pts;
hls->duration = 0;
- av_write_frame(oc, NULL); /* Flush any buffered data */
- ff_format_io_close(s, &oc->pb);
+ if (hls->flags & HLS_SINGLE_FILE) {
+ if (hls->avf->oformat->priv_class && hls->avf->priv_data)
+ av_opt_set(hls->avf->priv_data, "mpegts_flags", "resend_headers", 0);
+ hls->number++;
+ } else {
+ ff_format_io_close(s, &oc->pb);
+ if (hls->vtt_avf)
+ ff_format_io_close(s, &hls->vtt_avf->pb);
- ret = hls_start(s);
+ ret = hls_start(s);
+ }
- if (ret)
+ if (ret < 0)
return ret;
+ if( st->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE )
+ oc = hls->vtt_avf;
+ else
oc = hls->avf;
if ((ret = hls_window(s, 0)) < 0)
return ret;
}
- ret = ff_write_chained(oc, pkt->stream_index, pkt, s);
+ ret = ff_write_chained(oc, stream_index, pkt, s, 0);
return ret;
}
@@ -323,28 +871,65 @@ static int hls_write_trailer(struct AVFormatContext *s)
{
HLSContext *hls = s->priv_data;
AVFormatContext *oc = hls->avf;
+ AVFormatContext *vtt_oc = hls->vtt_avf;
av_write_trailer(oc);
- ff_format_io_close(s, &oc->pb);
+ if (oc->pb) {
+ hls->size = avio_tell(hls->avf->pb) - hls->start_pos;
+ ff_format_io_close(s, &oc->pb);
+ hls_append_segment(s, hls, hls->duration, hls->start_pos, hls->size);
+ }
+
+ 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);
- av_free(hls->basename);
- append_entry(hls, hls->duration);
+
+ if (vtt_oc) {
+ av_freep(&hls->vtt_basename);
+ av_freep(&hls->vtt_m3u8_name);
+ avformat_free_context(vtt_oc);
+ }
+
+ hls->avf = NULL;
hls_window(s, 1);
- free_entries(hls);
+ hls_free_segments(hls->segments);
+ hls_free_segments(hls->old_segments);
return 0;
}
#define OFFSET(x) offsetof(HLSContext, x)
#define E AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
- {"start_number", "first number in the sequence", OFFSET(start_sequence),AV_OPT_TYPE_INT64, {.i64 = 0}, 0, INT64_MAX, E},
- {"hls_time", "segment length in seconds", OFFSET(time), AV_OPT_TYPE_FLOAT, {.dbl = 2}, 0, FLT_MAX, E},
- {"hls_list_size", "maximum number of playlist entries", OFFSET(size), AV_OPT_TYPE_INT, {.i64 = 5}, 0, INT_MAX, E},
- {"hls_wrap", "number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
+ {"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_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},
+ {"hls_wrap", "set number after which the index wraps", OFFSET(wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E},
{"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_version", "protocol version", OFFSET(version), AV_OPT_TYPE_INT, {.i64 = 3}, 2, 3, E},
+ {"hls_segment_filename", "filename template for segment files", OFFSET(segment_filename), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, 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"},
+ {"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"},
+ {"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", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
+
{ NULL },
};
@@ -363,6 +948,7 @@ AVOutputFormat ff_hls_muxer = {
.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,
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 12:45:00 +0000