/*
* MPEG-DASH ISO BMFF segmenter
* Copyright (c) 2014 Martin Storsjo
+ * Copyright (c) 2018 Akamai Technologies, Inc.
*
* This file is part of FFmpeg.
*
#include "avformat.h"
#include "avio_internal.h"
#include "hlsplaylist.h"
+#if CONFIG_HTTP_PROTOCOL
+#include "http.h"
+#endif
#include "internal.h"
#include "isom.h"
#include "os_support.h"
char bandwidth_str[64];
char codec_str[100];
+ int written_len;
+ char filename[1024];
+ char full_path[1024];
+ char temp_path[1024];
} OutputStream;
typedef struct DASHContext {
const char *init_seg_name;
const char *media_seg_name;
const char *utc_timing_url;
+ const char *method;
const char *user_agent;
int hls_playlist;
+ int http_persistent;
int master_playlist_created;
+ AVIOContext *mpd_out;
+ AVIOContext *m3u8_out;
+ int streaming;
} DASHContext;
static struct codec_string {
{ 0, NULL }
};
+static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
+ AVDictionary **options) {
+ DASHContext *c = s->priv_data;
+ int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
+ int err = AVERROR_MUXER_NOT_FOUND;
+ if (!*pb || !http_base_proto || !c->http_persistent) {
+ err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
+#if CONFIG_HTTP_PROTOCOL
+ } else {
+ URLContext *http_url_context = ffio_geturlcontext(*pb);
+ av_assert0(http_url_context);
+ err = ff_http_do_new_request(http_url_context, filename);
+#endif
+ }
+ return err;
+}
+
+static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
+ DASHContext *c = s->priv_data;
+ int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
+
+ if (!http_base_proto || !c->http_persistent) {
+ ff_format_io_close(s, pb);
+#if CONFIG_HTTP_PROTOCOL
+ } else {
+ URLContext *http_url_context = ffio_geturlcontext(*pb);
+ av_assert0(http_url_context);
+ avio_flush(*pb);
+ ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
+#endif
+ }
+}
+
static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
char *str, int size)
{
// write out to file
*range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
os->ctx->pb = NULL;
- avio_write(os->out, buffer, *range_length);
+ avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
+ os->written_len = 0;
av_free(buffer);
// re-open buffer
static void set_http_options(AVDictionary **options, DASHContext *c)
{
+ if (c->method)
+ av_dict_set(options, "method", c->method, 0);
if (c->user_agent)
av_dict_set(options, "user_agent", c->user_agent, 0);
+ if (c->http_persistent)
+ av_dict_set_int(options, "multiple_requests", 1, 0);
}
static void get_hls_playlist_name(char *playlist_name, int string_size,
av_free(os->segments);
}
av_freep(&c->streams);
+
+ ff_format_io_close(s, &c->mpd_out);
+ ff_format_io_close(s, &c->m3u8_out);
}
-static void output_segment_list(OutputStream *os, AVIOContext *out, DASHContext *c,
+static void output_segment_list(OutputStream *os, AVIOContext *out, AVFormatContext *s,
int representation_id, int final)
{
+ DASHContext *c = s->priv_data;
int i, start_index = 0, start_number = 1;
if (c->window_size) {
start_index = FFMAX(os->nb_segments - c->window_size, 0);
int timescale = os->ctx->streams[0]->time_base.den;
char temp_filename_hls[1024];
char filename_hls[1024];
- AVIOContext *out_hls = NULL;
AVDictionary *http_opts = NULL;
int target_duration = 0;
+ int ret = 0;
const char *proto = avio_find_protocol_name(c->dirname);
int use_rename = proto && !strcmp(proto, "file");
snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
set_http_options(&http_opts, c);
- avio_open2(&out_hls, temp_filename_hls, AVIO_FLAG_WRITE, NULL, &http_opts);
+ dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
av_dict_free(&http_opts);
for (i = start_index; i < os->nb_segments; i++) {
Segment *seg = os->segments[i];
double duration = (double) seg->duration / timescale;
if (target_duration <= duration)
- target_duration = hls_get_int_from_double(duration);
+ target_duration = lrint(duration);
}
- ff_hls_write_playlist_header(out_hls, 6, -1, target_duration,
+ ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
start_number, PLAYLIST_TYPE_NONE);
- ff_hls_write_init_file(out_hls, os->initfile, c->single_file,
+ ff_hls_write_init_file(c->m3u8_out, os->initfile, c->single_file,
os->init_range_length, os->init_start_pos);
for (i = start_index; i < os->nb_segments; i++) {
Segment *seg = os->segments[i];
- ff_hls_write_file_entry(out_hls, 0, c->single_file,
+ ret = ff_hls_write_file_entry(c->m3u8_out, 0, c->single_file,
(double) seg->duration / timescale, 0,
seg->range_length, seg->start_pos, NULL,
c->single_file ? os->initfile : seg->file,
NULL);
+ if (ret < 0) {
+ av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
+ }
}
if (final)
- ff_hls_write_end_list(out_hls);
+ ff_hls_write_end_list(c->m3u8_out);
+
+ dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
- avio_close(out_hls);
if (use_rename)
- avpriv_io_move(temp_filename_hls, filename_hls);
+ if (avpriv_io_move(temp_filename_hls, filename_hls) < 0) {
+ av_log(os->ctx, AV_LOG_WARNING, "renaming file %s to %s failed\n\n", temp_filename_hls, filename_hls);
+ }
}
}
avio_printf(out, "\t\t\t\t<AudioChannelConfiguration schemeIdUri=\"urn:mpeg:dash:23003:3:audio_channel_configuration:2011\" value=\"%d\" />\n",
s->streams[i]->codecpar->channels);
}
- output_segment_list(os, out, c, i, final);
+ output_segment_list(os, out, s, i, final);
avio_printf(out, "\t\t\t</Representation>\n");
}
avio_printf(out, "\t\t</AdaptationSet>\n");
AVIOContext *out;
char temp_filename[1024];
int ret, i;
- const char *proto = avio_find_protocol_name(s->filename);
+ const char *proto = avio_find_protocol_name(s->url);
int use_rename = proto && !strcmp(proto, "file");
static unsigned int warned_non_file = 0;
AVDictionaryEntry *title = av_dict_get(s->metadata, "title", NULL, 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");
- snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->filename);
+ snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
set_http_options(&opts, c);
- ret = s->io_open(s, &out, temp_filename, AVIO_FLAG_WRITE, &opts);
+ ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
if (ret < 0) {
av_log(s, AV_LOG_ERROR, "Unable to open %s for writing\n", temp_filename);
return ret;
}
+ out = c->mpd_out;
av_dict_free(&opts);
avio_printf(out, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n");
avio_printf(out, "<MPD xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n"
avio_printf(out, "</MPD>\n");
avio_flush(out);
- ff_format_io_close(s, &out);
+ dashenc_io_close(s, &c->mpd_out, temp_filename);
if (use_rename) {
- if ((ret = avpriv_io_move(temp_filename, s->filename)) < 0)
+ if ((ret = avpriv_io_move(temp_filename, s->url)) < 0)
return ret;
}
if (c->hls_playlist && !c->master_playlist_created) {
char filename_hls[1024];
+ const char *audio_group = "A1";
+ int is_default = 1;
+ int max_audio_bitrate = 0;
if (*c->dirname)
snprintf(filename_hls, sizeof(filename_hls), "%s/master.m3u8", c->dirname);
for (i = 0; i < s->nb_streams; i++) {
char playlist_file[64];
AVStream *st = s->streams[i];
+ if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
+ continue;
+ get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
+ ff_hls_write_audio_rendition(out, (char *)audio_group,
+ playlist_file, i, is_default);
+ max_audio_bitrate = FFMAX(st->codecpar->bit_rate, max_audio_bitrate);
+ is_default = 0;
+ }
+
+ for (i = 0; i < s->nb_streams; i++) {
+ char playlist_file[64];
+ AVStream *st = s->streams[i];
+ char *agroup = NULL;
+ int stream_bitrate = st->codecpar->bit_rate;
+ if ((st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) && max_audio_bitrate) {
+ agroup = (char *)audio_group;
+ stream_bitrate += max_audio_bitrate;
+ }
get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
- ff_hls_write_stream_info(st, out, st->codecpar->bit_rate, playlist_file);
+ ff_hls_write_stream_info(st, out, stream_bitrate, playlist_file, agroup, NULL, NULL);
}
avio_close(out);
if (use_rename)
if (c->single_file)
c->use_template = 0;
- av_strlcpy(c->dirname, s->filename, sizeof(c->dirname));
+ av_strlcpy(c->dirname, s->url, sizeof(c->dirname));
ptr = strrchr(c->dirname, '/');
if (ptr) {
av_strlcpy(basename, &ptr[1], sizeof(basename));
ptr[1] = '\0';
} else {
c->dirname[0] = '\0';
- av_strlcpy(basename, s->filename, sizeof(basename));
+ av_strlcpy(basename, s->url, sizeof(basename));
}
ptr = strrchr(basename, '.');
os->init_start_pos = 0;
if (!strcmp(os->format_name, "mp4")) {
- av_dict_set(&opts, "movflags", "frag_custom+dash+delay_moov", 0);
+ if (c->streaming)
+ av_dict_set(&opts, "movflags", "frag_every_frame+dash+delay_moov", 0);
+ else
+ av_dict_set(&opts, "movflags", "frag_custom+dash+delay_moov", 0);
} else {
av_dict_set_int(&opts, "cluster_time_limit", c->min_seg_duration / 1000, 0);
av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
}
ret = write_manifest(s, 0);
if (!ret)
- av_log(s, AV_LOG_VERBOSE, "Manifest written to: %s\n", s->filename);
+ av_log(s, AV_LOG_VERBOSE, "Manifest written to: %s\n", s->url);
return ret;
}
return 0;
}
+static void dashenc_delete_file(AVFormatContext *s, char *filename) {
+ DASHContext *c = s->priv_data;
+ int http_base_proto = ff_is_http_proto(filename);
+
+ if (http_base_proto) {
+ AVIOContext *out = NULL;
+ AVDictionary *http_opts = NULL;
+
+ set_http_options(&http_opts, c);
+ av_dict_set(&http_opts, "method", "DELETE", 0);
+
+ if (dashenc_io_open(s, &out, filename, &http_opts) < 0) {
+ av_log(s, AV_LOG_ERROR, "failed to delete %s\n", filename);
+ }
+
+ av_dict_free(&http_opts);
+ dashenc_io_close(s, &out, filename);
+ } else if (unlink(filename) < 0) {
+ av_log(s, AV_LOG_ERROR, "failed to delete %s: %s\n", filename, strerror(errno));
+ }
+}
+
static int dash_flush(AVFormatContext *s, int final, int stream)
{
DASHContext *c = s->priv_data;
int i, ret = 0;
- const char *proto = avio_find_protocol_name(s->filename);
+ const char *proto = avio_find_protocol_name(s->url);
int use_rename = proto && !strcmp(proto, "file");
int cur_flush_segment_index = 0;
for (i = 0; i < s->nb_streams; i++) {
OutputStream *os = &c->streams[i];
AVStream *st = s->streams[i];
- char filename[1024] = "", full_path[1024], temp_path[1024];
int range_length, index_length = 0;
if (!os->packets_written)
continue;
}
- if (!os->init_range_length) {
- flush_init_segment(s, os);
- }
-
if (!c->single_file) {
- AVDictionary *opts = NULL;
- ff_dash_fill_tmpl_params(filename, sizeof(filename), c->media_seg_name, i, os->segment_index, os->bit_rate, os->start_pts);
- snprintf(full_path, sizeof(full_path), "%s%s", c->dirname, filename);
- snprintf(temp_path, sizeof(temp_path), use_rename ? "%s.tmp" : "%s", full_path);
- set_http_options(&opts, c);
- ret = s->io_open(s, &os->out, temp_path, AVIO_FLAG_WRITE, &opts);
- if (ret < 0)
- break;
- av_dict_free(&opts);
- if (!strcmp(os->format_name, "mp4"))
+ if (!strcmp(os->format_name, "mp4") && !os->written_len)
write_styp(os->ctx->pb);
} else {
- snprintf(full_path, sizeof(full_path), "%s%s", c->dirname, os->initfile);
+ snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
}
ret = flush_dynbuf(os, &range_length);
os->packets_written = 0;
if (c->single_file) {
- find_index_range(s, full_path, os->pos, &index_length);
+ find_index_range(s, os->full_path, os->pos, &index_length);
} else {
- ff_format_io_close(s, &os->out);
+ dashenc_io_close(s, &os->out, os->temp_path);
if (use_rename) {
- ret = avpriv_io_move(temp_path, full_path);
+ ret = avpriv_io_move(os->temp_path, os->full_path);
if (ret < 0)
break;
}
" bandwidth=\"%d\"", os->bit_rate);
}
}
- add_segment(os, filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length);
- av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, full_path);
+ add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length);
+ av_log(s, AV_LOG_VERBOSE, "Representation %d media segment %d written to: %s\n", i, os->segment_index, os->full_path);
os->pos += range_length;
}
for (j = 0; j < remove; j++) {
char filename[1024];
snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->segments[j]->file);
- unlink(filename);
+ dashenc_delete_file(s, filename);
av_free(os->segments[j]);
}
os->nb_segments -= remove;
else
os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
os->packets_written++;
- return ff_write_chained(os->ctx, 0, pkt, s, 0);
+ if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
+ return ret;
+
+ if (!os->init_range_length)
+ flush_init_segment(s, os);
+
+ //open the output context when the first frame of a segment is ready
+ if (!c->single_file && os->packets_written == 1) {
+ AVDictionary *opts = NULL;
+ const char *proto = avio_find_protocol_name(s->url);
+ int use_rename = proto && !strcmp(proto, "file");
+ os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
+ ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
+ c->media_seg_name, pkt->stream_index,
+ os->segment_index, os->bit_rate, os->start_pts);
+ snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname,
+ os->filename);
+ snprintf(os->temp_path, sizeof(os->temp_path),
+ use_rename ? "%s.tmp" : "%s", os->full_path);
+ set_http_options(&opts, c);
+ ret = dashenc_io_open(s, &os->out, os->temp_path, &opts);
+ if (ret < 0)
+ return ret;
+ av_dict_free(&opts);
+ }
+
+ //write out the data immediately in streaming mode
+ if (c->streaming && !strcmp(os->format_name, "mp4")) {
+ int len = 0;
+ uint8_t *buf = NULL;
+ if (!os->written_len)
+ write_styp(os->ctx->pb);
+ avio_flush(os->ctx->pb);
+ len = avio_get_dyn_buf (os->ctx->pb, &buf);
+ avio_write(os->out, buf + os->written_len, len - os->written_len);
+ os->written_len = len;
+ avio_flush(os->out);
+ }
+
+ return ret;
}
static int dash_write_trailer(AVFormatContext *s)
for (i = 0; i < s->nb_streams; i++) {
OutputStream *os = &c->streams[i];
snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
- unlink(filename);
+ dashenc_delete_file(s, filename);
}
- unlink(s->filename);
+ dashenc_delete_file(s, s->url);
}
return 0;
{ "init_seg_name", "DASH-templated name to used for the initialization segment", OFFSET(init_seg_name), AV_OPT_TYPE_STRING, {.str = "init-stream$RepresentationID$.m4s"}, 0, 0, E },
{ "media_seg_name", "DASH-templated name to used for the media segments", OFFSET(media_seg_name), AV_OPT_TYPE_STRING, {.str = "chunk-stream$RepresentationID$-$Number%05d$.m4s"}, 0, 0, E },
{ "utc_timing_url", "URL of the page that will return the UTC timestamp in ISO format", OFFSET(utc_timing_url), AV_OPT_TYPE_STRING, { 0 }, 0, 0, E },
+ { "method", "set the HTTP method", OFFSET(method), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E },
{ "http_user_agent", "override User-Agent field in HTTP header", OFFSET(user_agent), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E},
+ { "http_persistent", "Use persistent HTTP connections", OFFSET(http_persistent), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, E },
{ "hls_playlist", "Generate HLS playlist files(master.m3u8, media_%d.m3u8)", OFFSET(hls_playlist), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
+ { "streaming", "Enable/Disable streaming mode of output. Each frame will be moof fragment", OFFSET(streaming), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
{ NULL },
};
projects / ffmpeg / blobdiff