2399 lines
93 KiB
C
2399 lines
93 KiB
C
/*
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* MPEG-DASH ISO BMFF segmenter
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* Copyright (c) 2014 Martin Storsjo
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* Copyright (c) 2018 Akamai Technologies, Inc.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include "libavutil/avassert.h"
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#include "libavutil/avutil.h"
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#include "libavutil/avstring.h"
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#include "libavutil/intreadwrite.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/opt.h"
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#include "libavutil/parseutils.h"
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#include "libavutil/rational.h"
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#include "libavutil/time.h"
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#include "libavutil/time_internal.h"
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#include "av1.h"
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#include "avc.h"
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#include "avformat.h"
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#include "avio_internal.h"
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#include "hlsplaylist.h"
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#if CONFIG_HTTP_PROTOCOL
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#include "http.h"
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#endif
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#include "internal.h"
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#include "isom.h"
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#include "os_support.h"
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#include "url.h"
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#include "vpcc.h"
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#include "dash.h"
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typedef enum {
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SEGMENT_TYPE_AUTO = 0,
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SEGMENT_TYPE_MP4,
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SEGMENT_TYPE_WEBM,
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SEGMENT_TYPE_NB
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} SegmentType;
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enum {
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FRAG_TYPE_NONE = 0,
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FRAG_TYPE_EVERY_FRAME,
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FRAG_TYPE_DURATION,
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FRAG_TYPE_PFRAMES,
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FRAG_TYPE_NB
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};
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#define MPD_PROFILE_DASH 1
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#define MPD_PROFILE_DVB 2
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typedef struct Segment {
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char file[1024];
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int64_t start_pos;
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int range_length, index_length;
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int64_t time;
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double prog_date_time;
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int64_t duration;
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int n;
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} Segment;
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typedef struct AdaptationSet {
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int id;
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char *descriptor;
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int64_t seg_duration;
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int64_t frag_duration;
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int frag_type;
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enum AVMediaType media_type;
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AVDictionary *metadata;
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AVRational min_frame_rate, max_frame_rate;
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int ambiguous_frame_rate;
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int64_t max_frag_duration;
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int max_width, max_height;
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int nb_streams;
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AVRational par;
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int trick_idx;
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} AdaptationSet;
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typedef struct OutputStream {
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AVFormatContext *ctx;
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int ctx_inited, as_idx;
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AVIOContext *out;
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AVCodecParserContext *parser;
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AVCodecContext *parser_avctx;
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int packets_written;
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char initfile[1024];
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int64_t init_start_pos, pos;
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int init_range_length;
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int nb_segments, segments_size, segment_index;
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int64_t seg_duration;
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int64_t frag_duration;
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int64_t last_duration;
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Segment **segments;
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int64_t first_pts, start_pts, max_pts;
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int64_t last_dts, last_pts;
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int last_flags;
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int bit_rate;
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SegmentType segment_type; /* segment type selected for this particular stream */
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const char *format_name;
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const char *extension_name;
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const char *single_file_name; /* file names selected for this particular stream */
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const char *init_seg_name;
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const char *media_seg_name;
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char codec_str[100];
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int written_len;
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char filename[1024];
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char full_path[1024];
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char temp_path[1024];
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double availability_time_offset;
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AVProducerReferenceTime producer_reference_time;
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char producer_reference_time_str[100];
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int total_pkt_size;
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int64_t total_pkt_duration;
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int muxer_overhead;
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int frag_type;
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int64_t gop_size;
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AVRational sar;
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int coding_dependency;
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} OutputStream;
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typedef struct DASHContext {
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const AVClass *class; /* Class for private options. */
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char *adaptation_sets;
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AdaptationSet *as;
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int nb_as;
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int window_size;
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int extra_window_size;
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#if FF_API_DASH_MIN_SEG_DURATION
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int min_seg_duration;
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#endif
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int64_t seg_duration;
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int64_t frag_duration;
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int remove_at_exit;
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int use_template;
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int use_timeline;
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int single_file;
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OutputStream *streams;
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int has_video;
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int64_t last_duration;
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int64_t total_duration;
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char availability_start_time[100];
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time_t start_time_s;
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int64_t presentation_time_offset;
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char dirname[1024];
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const char *single_file_name; /* file names as specified in options */
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const char *init_seg_name;
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const char *media_seg_name;
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const char *utc_timing_url;
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const char *method;
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const char *user_agent;
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AVDictionary *http_opts;
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int hls_playlist;
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int http_persistent;
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int master_playlist_created;
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AVIOContext *mpd_out;
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AVIOContext *m3u8_out;
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int streaming;
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int64_t timeout;
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int index_correction;
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AVDictionary *format_options;
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int global_sidx;
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SegmentType segment_type_option; /* segment type as specified in options */
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int ignore_io_errors;
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int lhls;
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int ldash;
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int master_publish_rate;
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int nr_of_streams_to_flush;
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int nr_of_streams_flushed;
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int frag_type;
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int write_prft;
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int64_t max_gop_size;
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int64_t max_segment_duration;
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int profile;
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int64_t target_latency;
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int target_latency_refid;
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AVRational min_playback_rate;
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AVRational max_playback_rate;
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} DASHContext;
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static struct codec_string {
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int id;
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const char *str;
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} codecs[] = {
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{ AV_CODEC_ID_VP8, "vp8" },
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{ AV_CODEC_ID_VP9, "vp9" },
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{ AV_CODEC_ID_VORBIS, "vorbis" },
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{ AV_CODEC_ID_OPUS, "opus" },
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{ AV_CODEC_ID_FLAC, "flac" },
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{ 0, NULL }
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};
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static struct format_string {
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SegmentType segment_type;
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const char *str;
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} formats[] = {
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{ SEGMENT_TYPE_AUTO, "auto" },
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{ SEGMENT_TYPE_MP4, "mp4" },
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{ SEGMENT_TYPE_WEBM, "webm" },
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{ 0, NULL }
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};
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static int dashenc_io_open(AVFormatContext *s, AVIOContext **pb, char *filename,
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AVDictionary **options) {
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DASHContext *c = s->priv_data;
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int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
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int err = AVERROR_MUXER_NOT_FOUND;
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if (!*pb || !http_base_proto || !c->http_persistent) {
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err = s->io_open(s, pb, filename, AVIO_FLAG_WRITE, options);
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#if CONFIG_HTTP_PROTOCOL
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} else {
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URLContext *http_url_context = ffio_geturlcontext(*pb);
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av_assert0(http_url_context);
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err = ff_http_do_new_request(http_url_context, filename);
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if (err < 0)
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ff_format_io_close(s, pb);
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#endif
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}
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return err;
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}
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static void dashenc_io_close(AVFormatContext *s, AVIOContext **pb, char *filename) {
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DASHContext *c = s->priv_data;
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int http_base_proto = filename ? ff_is_http_proto(filename) : 0;
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if (!*pb)
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return;
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if (!http_base_proto || !c->http_persistent) {
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ff_format_io_close(s, pb);
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#if CONFIG_HTTP_PROTOCOL
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} else {
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URLContext *http_url_context = ffio_geturlcontext(*pb);
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av_assert0(http_url_context);
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avio_flush(*pb);
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ffurl_shutdown(http_url_context, AVIO_FLAG_WRITE);
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#endif
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}
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}
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static const char *get_format_str(SegmentType segment_type) {
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int i;
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for (i = 0; i < SEGMENT_TYPE_NB; i++)
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if (formats[i].segment_type == segment_type)
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return formats[i].str;
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return NULL;
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}
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static const char *get_extension_str(SegmentType type, int single_file)
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{
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switch (type) {
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case SEGMENT_TYPE_MP4: return single_file ? "mp4" : "m4s";
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case SEGMENT_TYPE_WEBM: return "webm";
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default: return NULL;
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}
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}
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static int handle_io_open_error(AVFormatContext *s, int err, char *url) {
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DASHContext *c = s->priv_data;
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char errbuf[AV_ERROR_MAX_STRING_SIZE];
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av_strerror(err, errbuf, sizeof(errbuf));
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av_log(s, c->ignore_io_errors ? AV_LOG_WARNING : AV_LOG_ERROR,
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"Unable to open %s for writing: %s\n", url, errbuf);
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return c->ignore_io_errors ? 0 : err;
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}
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static inline SegmentType select_segment_type(SegmentType segment_type, enum AVCodecID codec_id)
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{
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if (segment_type == SEGMENT_TYPE_AUTO) {
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if (codec_id == AV_CODEC_ID_OPUS || codec_id == AV_CODEC_ID_VORBIS ||
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codec_id == AV_CODEC_ID_VP8 || codec_id == AV_CODEC_ID_VP9) {
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segment_type = SEGMENT_TYPE_WEBM;
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} else {
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segment_type = SEGMENT_TYPE_MP4;
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}
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}
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return segment_type;
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}
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static int init_segment_types(AVFormatContext *s)
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{
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DASHContext *c = s->priv_data;
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int has_mp4_streams = 0;
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for (int i = 0; i < s->nb_streams; ++i) {
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OutputStream *os = &c->streams[i];
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SegmentType segment_type = select_segment_type(
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c->segment_type_option, s->streams[i]->codecpar->codec_id);
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os->segment_type = segment_type;
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os->format_name = get_format_str(segment_type);
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if (!os->format_name) {
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av_log(s, AV_LOG_ERROR, "Could not select DASH segment type for stream %d\n", i);
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return AVERROR_MUXER_NOT_FOUND;
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}
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os->extension_name = get_extension_str(segment_type, c->single_file);
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if (!os->extension_name) {
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av_log(s, AV_LOG_ERROR, "Could not get extension type for stream %d\n", i);
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return AVERROR_MUXER_NOT_FOUND;
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}
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has_mp4_streams |= segment_type == SEGMENT_TYPE_MP4;
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}
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if (c->hls_playlist && !has_mp4_streams) {
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av_log(s, AV_LOG_WARNING, "No mp4 streams, disabling HLS manifest generation\n");
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c->hls_playlist = 0;
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}
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return 0;
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}
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static int check_file_extension(const char *filename, const char *extension) {
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char *dot;
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if (!filename || !extension)
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return -1;
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dot = strrchr(filename, '.');
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if (dot && !strcmp(dot + 1, extension))
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return 0;
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return -1;
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}
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static void set_vp9_codec_str(AVFormatContext *s, AVCodecParameters *par,
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AVRational *frame_rate, char *str, int size) {
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VPCC vpcc;
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int ret = ff_isom_get_vpcc_features(s, par, frame_rate, &vpcc);
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if (ret == 0) {
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av_strlcatf(str, size, "vp09.%02d.%02d.%02d",
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vpcc.profile, vpcc.level, vpcc.bitdepth);
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} else {
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// Default to just vp9 in case of error while finding out profile or level
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av_log(s, AV_LOG_WARNING, "Could not find VP9 profile and/or level\n");
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av_strlcpy(str, "vp9", size);
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}
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return;
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}
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static void set_codec_str(AVFormatContext *s, AVCodecParameters *par,
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AVRational *frame_rate, char *str, int size)
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{
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const AVCodecTag *tags[2] = { NULL, NULL };
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uint32_t tag;
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int i;
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// common Webm codecs are not part of RFC 6381
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for (i = 0; codecs[i].id; i++)
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if (codecs[i].id == par->codec_id) {
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if (codecs[i].id == AV_CODEC_ID_VP9) {
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set_vp9_codec_str(s, par, frame_rate, str, size);
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} else {
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av_strlcpy(str, codecs[i].str, size);
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}
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return;
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}
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// for codecs part of RFC 6381
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if (par->codec_type == AVMEDIA_TYPE_VIDEO)
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tags[0] = ff_codec_movvideo_tags;
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else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
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tags[0] = ff_codec_movaudio_tags;
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else
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return;
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tag = par->codec_tag;
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if (!tag)
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tag = av_codec_get_tag(tags, par->codec_id);
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if (!tag)
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return;
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if (size < 5)
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return;
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AV_WL32(str, tag);
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str[4] = '\0';
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if (!strcmp(str, "mp4a") || !strcmp(str, "mp4v")) {
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uint32_t oti;
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tags[0] = ff_mp4_obj_type;
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oti = av_codec_get_tag(tags, par->codec_id);
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if (oti)
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av_strlcatf(str, size, ".%02"PRIx32, oti);
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else
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return;
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if (tag == MKTAG('m', 'p', '4', 'a')) {
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if (par->extradata_size >= 2) {
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int aot = par->extradata[0] >> 3;
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if (aot == 31)
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aot = ((AV_RB16(par->extradata) >> 5) & 0x3f) + 32;
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av_strlcatf(str, size, ".%d", aot);
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}
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} else if (tag == MKTAG('m', 'p', '4', 'v')) {
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// Unimplemented, should output ProfileLevelIndication as a decimal number
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av_log(s, AV_LOG_WARNING, "Incomplete RFC 6381 codec string for mp4v\n");
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}
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} else if (!strcmp(str, "avc1")) {
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uint8_t *tmpbuf = NULL;
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uint8_t *extradata = par->extradata;
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int extradata_size = par->extradata_size;
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if (!extradata_size)
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return;
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if (extradata[0] != 1) {
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AVIOContext *pb;
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if (avio_open_dyn_buf(&pb) < 0)
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return;
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if (ff_isom_write_avcc(pb, extradata, extradata_size) < 0) {
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ffio_free_dyn_buf(&pb);
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return;
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}
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extradata_size = avio_close_dyn_buf(pb, &extradata);
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tmpbuf = extradata;
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}
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if (extradata_size >= 4)
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av_strlcatf(str, size, ".%02x%02x%02x",
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extradata[1], extradata[2], extradata[3]);
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av_free(tmpbuf);
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} else if (!strcmp(str, "av01")) {
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AV1SequenceParameters seq;
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if (!par->extradata_size)
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return;
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if (ff_av1_parse_seq_header(&seq, par->extradata, par->extradata_size) < 0)
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return;
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av_strlcatf(str, size, ".%01u.%02u%s.%02u",
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seq.profile, seq.level, seq.tier ? "H" : "M", seq.bitdepth);
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if (seq.color_description_present_flag)
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av_strlcatf(str, size, ".%01u.%01u%01u%01u.%02u.%02u.%02u.%01u",
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seq.monochrome,
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seq.chroma_subsampling_x, seq.chroma_subsampling_y, seq.chroma_sample_position,
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seq.color_primaries, seq.transfer_characteristics, seq.matrix_coefficients,
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seq.color_range);
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}
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}
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static int flush_dynbuf(DASHContext *c, OutputStream *os, int *range_length)
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{
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uint8_t *buffer;
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if (!os->ctx->pb) {
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return AVERROR(EINVAL);
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}
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// flush
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av_write_frame(os->ctx, NULL);
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avio_flush(os->ctx->pb);
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if (!c->single_file) {
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// write out to file
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*range_length = avio_close_dyn_buf(os->ctx->pb, &buffer);
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os->ctx->pb = NULL;
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if (os->out)
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avio_write(os->out, buffer + os->written_len, *range_length - os->written_len);
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os->written_len = 0;
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av_free(buffer);
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// re-open buffer
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return avio_open_dyn_buf(&os->ctx->pb);
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} else {
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*range_length = avio_tell(os->ctx->pb) - os->pos;
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return 0;
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}
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}
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static void set_http_options(AVDictionary **options, DASHContext *c)
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{
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if (c->method)
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av_dict_set(options, "method", c->method, 0);
|
|
av_dict_copy(options, c->http_opts, 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);
|
|
if (c->timeout >= 0)
|
|
av_dict_set_int(options, "timeout", c->timeout, 0);
|
|
}
|
|
|
|
static void get_hls_playlist_name(char *playlist_name, int string_size,
|
|
const char *base_url, int id) {
|
|
if (base_url)
|
|
snprintf(playlist_name, string_size, "%smedia_%d.m3u8", base_url, id);
|
|
else
|
|
snprintf(playlist_name, string_size, "media_%d.m3u8", id);
|
|
}
|
|
|
|
static void get_start_index_number(OutputStream *os, DASHContext *c,
|
|
int *start_index, int *start_number) {
|
|
*start_index = 0;
|
|
*start_number = 1;
|
|
if (c->window_size) {
|
|
*start_index = FFMAX(os->nb_segments - c->window_size, 0);
|
|
*start_number = FFMAX(os->segment_index - c->window_size, 1);
|
|
}
|
|
}
|
|
|
|
static void write_hls_media_playlist(OutputStream *os, AVFormatContext *s,
|
|
int representation_id, int final,
|
|
char *prefetch_url) {
|
|
DASHContext *c = s->priv_data;
|
|
int timescale = os->ctx->streams[0]->time_base.den;
|
|
char temp_filename_hls[1024];
|
|
char filename_hls[1024];
|
|
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");
|
|
int i, start_index, start_number;
|
|
double prog_date_time = 0;
|
|
|
|
get_start_index_number(os, c, &start_index, &start_number);
|
|
|
|
if (!c->hls_playlist || start_index >= os->nb_segments ||
|
|
os->segment_type != SEGMENT_TYPE_MP4)
|
|
return;
|
|
|
|
get_hls_playlist_name(filename_hls, sizeof(filename_hls),
|
|
c->dirname, representation_id);
|
|
|
|
snprintf(temp_filename_hls, sizeof(temp_filename_hls), use_rename ? "%s.tmp" : "%s", filename_hls);
|
|
|
|
set_http_options(&http_opts, c);
|
|
ret = dashenc_io_open(s, &c->m3u8_out, temp_filename_hls, &http_opts);
|
|
av_dict_free(&http_opts);
|
|
if (ret < 0) {
|
|
handle_io_open_error(s, ret, temp_filename_hls);
|
|
return;
|
|
}
|
|
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 = lrint(duration);
|
|
}
|
|
|
|
ff_hls_write_playlist_header(c->m3u8_out, 6, -1, target_duration,
|
|
start_number, PLAYLIST_TYPE_NONE, 0);
|
|
|
|
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];
|
|
|
|
if (prog_date_time == 0) {
|
|
if (os->nb_segments == 1)
|
|
prog_date_time = c->start_time_s;
|
|
else
|
|
prog_date_time = seg->prog_date_time;
|
|
}
|
|
seg->prog_date_time = prog_date_time;
|
|
|
|
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,
|
|
&prog_date_time, 0, 0, 0);
|
|
if (ret < 0) {
|
|
av_log(os->ctx, AV_LOG_WARNING, "ff_hls_write_file_entry get error\n");
|
|
}
|
|
}
|
|
|
|
if (prefetch_url)
|
|
avio_printf(c->m3u8_out, "#EXT-X-PREFETCH:%s\n", prefetch_url);
|
|
|
|
if (final)
|
|
ff_hls_write_end_list(c->m3u8_out);
|
|
|
|
dashenc_io_close(s, &c->m3u8_out, temp_filename_hls);
|
|
|
|
if (use_rename)
|
|
ff_rename(temp_filename_hls, filename_hls, os->ctx);
|
|
}
|
|
|
|
static int flush_init_segment(AVFormatContext *s, OutputStream *os)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
int ret, range_length;
|
|
|
|
ret = flush_dynbuf(c, os, &range_length);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
os->pos = os->init_range_length = range_length;
|
|
if (!c->single_file) {
|
|
char filename[1024];
|
|
snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
|
|
dashenc_io_close(s, &os->out, filename);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void dash_free(AVFormatContext *s)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
int i, j;
|
|
|
|
if (c->as) {
|
|
for (i = 0; i < c->nb_as; i++) {
|
|
av_dict_free(&c->as[i].metadata);
|
|
av_freep(&c->as[i].descriptor);
|
|
}
|
|
av_freep(&c->as);
|
|
c->nb_as = 0;
|
|
}
|
|
|
|
if (!c->streams)
|
|
return;
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
OutputStream *os = &c->streams[i];
|
|
if (os->ctx && os->ctx->pb) {
|
|
if (!c->single_file)
|
|
ffio_free_dyn_buf(&os->ctx->pb);
|
|
else
|
|
avio_close(os->ctx->pb);
|
|
}
|
|
ff_format_io_close(s, &os->out);
|
|
avformat_free_context(os->ctx);
|
|
avcodec_free_context(&os->parser_avctx);
|
|
av_parser_close(os->parser);
|
|
for (j = 0; j < os->nb_segments; j++)
|
|
av_free(os->segments[j]);
|
|
av_free(os->segments);
|
|
av_freep(&os->single_file_name);
|
|
av_freep(&os->init_seg_name);
|
|
av_freep(&os->media_seg_name);
|
|
}
|
|
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, AVFormatContext *s,
|
|
int representation_id, int final)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
int i, start_index, start_number;
|
|
get_start_index_number(os, c, &start_index, &start_number);
|
|
|
|
if (c->use_template) {
|
|
int timescale = c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE;
|
|
avio_printf(out, "\t\t\t\t<SegmentTemplate timescale=\"%d\" ", timescale);
|
|
if (!c->use_timeline) {
|
|
avio_printf(out, "duration=\"%"PRId64"\" ", os->seg_duration);
|
|
if (c->streaming && os->availability_time_offset)
|
|
avio_printf(out, "availabilityTimeOffset=\"%.3f\" ",
|
|
os->availability_time_offset);
|
|
}
|
|
if (c->streaming && os->availability_time_offset && !final)
|
|
avio_printf(out, "availabilityTimeComplete=\"false\" ");
|
|
|
|
avio_printf(out, "initialization=\"%s\" media=\"%s\" startNumber=\"%d\"", os->init_seg_name, os->media_seg_name, c->use_timeline ? start_number : 1);
|
|
if (c->presentation_time_offset)
|
|
avio_printf(out, " presentationTimeOffset=\"%"PRId64"\"", c->presentation_time_offset);
|
|
avio_printf(out, ">\n");
|
|
if (c->use_timeline) {
|
|
int64_t cur_time = 0;
|
|
avio_printf(out, "\t\t\t\t\t<SegmentTimeline>\n");
|
|
for (i = start_index; i < os->nb_segments; ) {
|
|
Segment *seg = os->segments[i];
|
|
int repeat = 0;
|
|
avio_printf(out, "\t\t\t\t\t\t<S ");
|
|
if (i == start_index || seg->time != cur_time) {
|
|
cur_time = seg->time;
|
|
avio_printf(out, "t=\"%"PRId64"\" ", seg->time);
|
|
}
|
|
avio_printf(out, "d=\"%"PRId64"\" ", seg->duration);
|
|
while (i + repeat + 1 < os->nb_segments &&
|
|
os->segments[i + repeat + 1]->duration == seg->duration &&
|
|
os->segments[i + repeat + 1]->time == os->segments[i + repeat]->time + os->segments[i + repeat]->duration)
|
|
repeat++;
|
|
if (repeat > 0)
|
|
avio_printf(out, "r=\"%d\" ", repeat);
|
|
avio_printf(out, "/>\n");
|
|
i += 1 + repeat;
|
|
cur_time += (1 + repeat) * seg->duration;
|
|
}
|
|
avio_printf(out, "\t\t\t\t\t</SegmentTimeline>\n");
|
|
}
|
|
avio_printf(out, "\t\t\t\t</SegmentTemplate>\n");
|
|
} else if (c->single_file) {
|
|
avio_printf(out, "\t\t\t\t<BaseURL>%s</BaseURL>\n", os->initfile);
|
|
avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
|
|
avio_printf(out, "\t\t\t\t\t<Initialization range=\"%"PRId64"-%"PRId64"\" />\n", os->init_start_pos, os->init_start_pos + os->init_range_length - 1);
|
|
for (i = start_index; i < os->nb_segments; i++) {
|
|
Segment *seg = os->segments[i];
|
|
avio_printf(out, "\t\t\t\t\t<SegmentURL mediaRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->range_length - 1);
|
|
if (seg->index_length)
|
|
avio_printf(out, "indexRange=\"%"PRId64"-%"PRId64"\" ", seg->start_pos, seg->start_pos + seg->index_length - 1);
|
|
avio_printf(out, "/>\n");
|
|
}
|
|
avio_printf(out, "\t\t\t\t</SegmentList>\n");
|
|
} else {
|
|
avio_printf(out, "\t\t\t\t<SegmentList timescale=\"%d\" duration=\"%"PRId64"\" startNumber=\"%d\">\n", AV_TIME_BASE, FFMIN(os->seg_duration, os->last_duration), start_number);
|
|
avio_printf(out, "\t\t\t\t\t<Initialization sourceURL=\"%s\" />\n", os->initfile);
|
|
for (i = start_index; i < os->nb_segments; i++) {
|
|
Segment *seg = os->segments[i];
|
|
avio_printf(out, "\t\t\t\t\t<SegmentURL media=\"%s\" />\n", seg->file);
|
|
}
|
|
avio_printf(out, "\t\t\t\t</SegmentList>\n");
|
|
}
|
|
if (!c->lhls || final) {
|
|
write_hls_media_playlist(os, s, representation_id, final, NULL);
|
|
}
|
|
|
|
}
|
|
|
|
static char *xmlescape(const char *str) {
|
|
int outlen = strlen(str)*3/2 + 6;
|
|
char *out = av_realloc(NULL, outlen + 1);
|
|
int pos = 0;
|
|
if (!out)
|
|
return NULL;
|
|
for (; *str; str++) {
|
|
if (pos + 6 > outlen) {
|
|
char *tmp;
|
|
outlen = 2 * outlen + 6;
|
|
tmp = av_realloc(out, outlen + 1);
|
|
if (!tmp) {
|
|
av_free(out);
|
|
return NULL;
|
|
}
|
|
out = tmp;
|
|
}
|
|
if (*str == '&') {
|
|
memcpy(&out[pos], "&", 5);
|
|
pos += 5;
|
|
} else if (*str == '<') {
|
|
memcpy(&out[pos], "<", 4);
|
|
pos += 4;
|
|
} else if (*str == '>') {
|
|
memcpy(&out[pos], ">", 4);
|
|
pos += 4;
|
|
} else if (*str == '\'') {
|
|
memcpy(&out[pos], "'", 6);
|
|
pos += 6;
|
|
} else if (*str == '\"') {
|
|
memcpy(&out[pos], """, 6);
|
|
pos += 6;
|
|
} else {
|
|
out[pos++] = *str;
|
|
}
|
|
}
|
|
out[pos] = '\0';
|
|
return out;
|
|
}
|
|
|
|
static void write_time(AVIOContext *out, int64_t time)
|
|
{
|
|
int seconds = time / AV_TIME_BASE;
|
|
int fractions = time % AV_TIME_BASE;
|
|
int minutes = seconds / 60;
|
|
int hours = minutes / 60;
|
|
seconds %= 60;
|
|
minutes %= 60;
|
|
avio_printf(out, "PT");
|
|
if (hours)
|
|
avio_printf(out, "%dH", hours);
|
|
if (hours || minutes)
|
|
avio_printf(out, "%dM", minutes);
|
|
avio_printf(out, "%d.%dS", seconds, fractions / (AV_TIME_BASE / 10));
|
|
}
|
|
|
|
static void format_date(char *buf, int size, int64_t time_us)
|
|
{
|
|
struct tm *ptm, tmbuf;
|
|
int64_t time_ms = time_us / 1000;
|
|
const time_t time_s = time_ms / 1000;
|
|
int millisec = time_ms - (time_s * 1000);
|
|
ptm = gmtime_r(&time_s, &tmbuf);
|
|
if (ptm) {
|
|
int len;
|
|
if (!strftime(buf, size, "%Y-%m-%dT%H:%M:%S", ptm)) {
|
|
buf[0] = '\0';
|
|
return;
|
|
}
|
|
len = strlen(buf);
|
|
snprintf(buf + len, size - len, ".%03dZ", millisec);
|
|
}
|
|
}
|
|
|
|
static int write_adaptation_set(AVFormatContext *s, AVIOContext *out, int as_index,
|
|
int final)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
AdaptationSet *as = &c->as[as_index];
|
|
AVDictionaryEntry *lang, *role;
|
|
int i;
|
|
|
|
avio_printf(out, "\t\t<AdaptationSet id=\"%d\" contentType=\"%s\" startWithSAP=\"1\" segmentAlignment=\"true\" bitstreamSwitching=\"true\"",
|
|
as->id, as->media_type == AVMEDIA_TYPE_VIDEO ? "video" : "audio");
|
|
if (as->media_type == AVMEDIA_TYPE_VIDEO && as->max_frame_rate.num && !as->ambiguous_frame_rate && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
|
|
avio_printf(out, " maxFrameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
|
|
else if (as->media_type == AVMEDIA_TYPE_VIDEO && as->max_frame_rate.num && !as->ambiguous_frame_rate && !av_cmp_q(as->min_frame_rate, as->max_frame_rate))
|
|
avio_printf(out, " frameRate=\"%d/%d\"", as->max_frame_rate.num, as->max_frame_rate.den);
|
|
if (as->media_type == AVMEDIA_TYPE_VIDEO) {
|
|
avio_printf(out, " maxWidth=\"%d\" maxHeight=\"%d\"", as->max_width, as->max_height);
|
|
avio_printf(out, " par=\"%d:%d\"", as->par.num, as->par.den);
|
|
}
|
|
lang = av_dict_get(as->metadata, "language", NULL, 0);
|
|
if (lang)
|
|
avio_printf(out, " lang=\"%s\"", lang->value);
|
|
avio_printf(out, ">\n");
|
|
|
|
if (!final && c->ldash && as->max_frag_duration && !(c->profile & MPD_PROFILE_DVB))
|
|
avio_printf(out, "\t\t\t<Resync dT=\"%"PRId64"\" type=\"0\"/>\n", as->max_frag_duration);
|
|
if (as->trick_idx >= 0)
|
|
avio_printf(out, "\t\t\t<EssentialProperty id=\"%d\" schemeIdUri=\"http://dashif.org/guidelines/trickmode\" value=\"%d\"/>\n", as->id, as->trick_idx);
|
|
role = av_dict_get(as->metadata, "role", NULL, 0);
|
|
if (role)
|
|
avio_printf(out, "\t\t\t<Role schemeIdUri=\"urn:mpeg:dash:role:2011\" value=\"%s\"/>\n", role->value);
|
|
if (as->descriptor)
|
|
avio_printf(out, "\t\t\t%s\n", as->descriptor);
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
OutputStream *os = &c->streams[i];
|
|
char bandwidth_str[64] = {'\0'};
|
|
|
|
if (os->as_idx - 1 != as_index)
|
|
continue;
|
|
|
|
if (os->bit_rate > 0)
|
|
snprintf(bandwidth_str, sizeof(bandwidth_str), " bandwidth=\"%d\"",
|
|
os->bit_rate);
|
|
|
|
if (as->media_type == AVMEDIA_TYPE_VIDEO) {
|
|
avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"video/%s\" codecs=\"%s\"%s width=\"%d\" height=\"%d\"",
|
|
i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->width, s->streams[i]->codecpar->height);
|
|
if (st->codecpar->field_order == AV_FIELD_UNKNOWN)
|
|
avio_printf(out, " scanType=\"unknown\"");
|
|
else if (st->codecpar->field_order != AV_FIELD_PROGRESSIVE)
|
|
avio_printf(out, " scanType=\"interlaced\"");
|
|
avio_printf(out, " sar=\"%d:%d\"", os->sar.num, os->sar.den);
|
|
if (st->avg_frame_rate.num && av_cmp_q(as->min_frame_rate, as->max_frame_rate) < 0)
|
|
avio_printf(out, " frameRate=\"%d/%d\"", st->avg_frame_rate.num, st->avg_frame_rate.den);
|
|
if (as->trick_idx >= 0) {
|
|
AdaptationSet *tas = &c->as[as->trick_idx];
|
|
if (!as->ambiguous_frame_rate && !tas->ambiguous_frame_rate)
|
|
avio_printf(out, " maxPlayoutRate=\"%d\"", FFMAX((int)av_q2d(av_div_q(tas->min_frame_rate, as->min_frame_rate)), 1));
|
|
}
|
|
if (!os->coding_dependency)
|
|
avio_printf(out, " codingDependency=\"false\"");
|
|
avio_printf(out, ">\n");
|
|
} else {
|
|
avio_printf(out, "\t\t\t<Representation id=\"%d\" mimeType=\"audio/%s\" codecs=\"%s\"%s audioSamplingRate=\"%d\">\n",
|
|
i, os->format_name, os->codec_str, bandwidth_str, s->streams[i]->codecpar->sample_rate);
|
|
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);
|
|
}
|
|
if (!final && c->write_prft && os->producer_reference_time_str[0]) {
|
|
avio_printf(out, "\t\t\t\t<ProducerReferenceTime id=\"%d\" inband=\"true\" type=\"%s\" wallClockTime=\"%s\" presentationTime=\"%"PRId64"\">\n",
|
|
i, os->producer_reference_time.flags ? "captured" : "encoder", os->producer_reference_time_str, c->presentation_time_offset);
|
|
avio_printf(out, "\t\t\t\t\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
|
|
avio_printf(out, "\t\t\t\t</ProducerReferenceTime>\n");
|
|
}
|
|
if (!final && c->ldash && os->gop_size && os->frag_type != FRAG_TYPE_NONE && !(c->profile & MPD_PROFILE_DVB) &&
|
|
(os->frag_type != FRAG_TYPE_DURATION || os->frag_duration != os->seg_duration))
|
|
avio_printf(out, "\t\t\t\t<Resync dT=\"%"PRId64"\" type=\"1\"/>\n", os->gop_size);
|
|
output_segment_list(os, out, s, i, final);
|
|
avio_printf(out, "\t\t\t</Representation>\n");
|
|
}
|
|
avio_printf(out, "\t\t</AdaptationSet>\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int add_adaptation_set(AVFormatContext *s, AdaptationSet **as, enum AVMediaType type)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
void *mem;
|
|
|
|
if (c->profile & MPD_PROFILE_DVB && (c->nb_as + 1) > 16) {
|
|
av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Adaptation Sets\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
mem = av_realloc(c->as, sizeof(*c->as) * (c->nb_as + 1));
|
|
if (!mem)
|
|
return AVERROR(ENOMEM);
|
|
c->as = mem;
|
|
++c->nb_as;
|
|
|
|
*as = &c->as[c->nb_as - 1];
|
|
memset(*as, 0, sizeof(**as));
|
|
(*as)->media_type = type;
|
|
(*as)->frag_type = -1;
|
|
(*as)->trick_idx = -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int adaptation_set_add_stream(AVFormatContext *s, int as_idx, int i)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
AdaptationSet *as = &c->as[as_idx - 1];
|
|
OutputStream *os = &c->streams[i];
|
|
|
|
if (as->media_type != s->streams[i]->codecpar->codec_type) {
|
|
av_log(s, AV_LOG_ERROR, "Codec type of stream %d doesn't match AdaptationSet's media type\n", i);
|
|
return AVERROR(EINVAL);
|
|
} else if (os->as_idx) {
|
|
av_log(s, AV_LOG_ERROR, "Stream %d is already assigned to an AdaptationSet\n", i);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (c->profile & MPD_PROFILE_DVB && (as->nb_streams + 1) > 16) {
|
|
av_log(s, AV_LOG_ERROR, "DVB-DASH profile allows a max of 16 Representations per Adaptation Set\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
os->as_idx = as_idx;
|
|
++as->nb_streams;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int parse_adaptation_sets(AVFormatContext *s)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
const char *p = c->adaptation_sets;
|
|
enum { new_set, parse_default, parsing_streams, parse_seg_duration, parse_frag_duration } state;
|
|
AdaptationSet *as;
|
|
int i, n, ret;
|
|
|
|
// default: one AdaptationSet for each stream
|
|
if (!p) {
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
if ((ret = add_adaptation_set(s, &as, s->streams[i]->codecpar->codec_type)) < 0)
|
|
return ret;
|
|
as->id = i;
|
|
|
|
c->streams[i].as_idx = c->nb_as;
|
|
++as->nb_streams;
|
|
}
|
|
goto end;
|
|
}
|
|
|
|
// syntax id=0,streams=0,1,2 id=1,streams=3,4 and so on
|
|
// option id=0,descriptor=descriptor_str,streams=0,1,2 and so on
|
|
// option id=0,seg_duration=2.5,frag_duration=0.5,streams=0,1,2
|
|
// id=1,trick_id=0,seg_duration=10,frag_type=none,streams=3 and so on
|
|
// descriptor is useful to the scheme defined by ISO/IEC 23009-1:2014/Amd.2:2015
|
|
// descriptor_str should be a self-closing xml tag.
|
|
// seg_duration and frag_duration have the same syntax as the global options of
|
|
// the same name, and the former have precedence over them if set.
|
|
state = new_set;
|
|
while (*p) {
|
|
if (*p == ' ') {
|
|
p++;
|
|
continue;
|
|
} else if (state == new_set && av_strstart(p, "id=", &p)) {
|
|
char id_str[10], *end_str;
|
|
|
|
n = strcspn(p, ",");
|
|
snprintf(id_str, sizeof(id_str), "%.*s", n, p);
|
|
|
|
i = strtol(id_str, &end_str, 10);
|
|
if (id_str == end_str || i < 0 || i > c->nb_as) {
|
|
av_log(s, AV_LOG_ERROR, "\"%s\" is not a valid value for an AdaptationSet id\n", id_str);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if ((ret = add_adaptation_set(s, &as, AVMEDIA_TYPE_UNKNOWN)) < 0)
|
|
return ret;
|
|
as->id = i;
|
|
|
|
p += n;
|
|
if (*p)
|
|
p++;
|
|
state = parse_default;
|
|
} else if (state != new_set && av_strstart(p, "seg_duration=", &p)) {
|
|
state = parse_seg_duration;
|
|
} else if (state != new_set && av_strstart(p, "frag_duration=", &p)) {
|
|
state = parse_frag_duration;
|
|
} else if (state == parse_seg_duration || state == parse_frag_duration) {
|
|
char str[32];
|
|
int64_t usecs = 0;
|
|
|
|
n = strcspn(p, ",");
|
|
snprintf(str, sizeof(str), "%.*s", n, p);
|
|
p += n;
|
|
if (*p)
|
|
p++;
|
|
|
|
ret = av_parse_time(&usecs, str, 1);
|
|
if (ret < 0) {
|
|
av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as duration\n", str);
|
|
return ret;
|
|
}
|
|
|
|
if (state == parse_seg_duration)
|
|
as->seg_duration = usecs;
|
|
else
|
|
as->frag_duration = usecs;
|
|
state = parse_default;
|
|
} else if (state != new_set && av_strstart(p, "frag_type=", &p)) {
|
|
char type_str[16];
|
|
|
|
n = strcspn(p, ",");
|
|
snprintf(type_str, sizeof(type_str), "%.*s", n, p);
|
|
p += n;
|
|
if (*p)
|
|
p++;
|
|
|
|
if (!strcmp(type_str, "duration"))
|
|
as->frag_type = FRAG_TYPE_DURATION;
|
|
else if (!strcmp(type_str, "pframes"))
|
|
as->frag_type = FRAG_TYPE_PFRAMES;
|
|
else if (!strcmp(type_str, "every_frame"))
|
|
as->frag_type = FRAG_TYPE_EVERY_FRAME;
|
|
else if (!strcmp(type_str, "none"))
|
|
as->frag_type = FRAG_TYPE_NONE;
|
|
else {
|
|
av_log(s, AV_LOG_ERROR, "Unable to parse option value \"%s\" as fragment type\n", type_str);
|
|
return ret;
|
|
}
|
|
state = parse_default;
|
|
} else if (state != new_set && av_strstart(p, "descriptor=", &p)) {
|
|
n = strcspn(p, ">") + 1; //followed by one comma, so plus 1
|
|
if (n < strlen(p)) {
|
|
as->descriptor = av_strndup(p, n);
|
|
} else {
|
|
av_log(s, AV_LOG_ERROR, "Parse error, descriptor string should be a self-closing xml tag\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
p += n;
|
|
if (*p)
|
|
p++;
|
|
state = parse_default;
|
|
} else if ((state != new_set) && av_strstart(p, "trick_id=", &p)) {
|
|
char trick_id_str[10], *end_str;
|
|
|
|
n = strcspn(p, ",");
|
|
snprintf(trick_id_str, sizeof(trick_id_str), "%.*s", n, p);
|
|
p += n;
|
|
|
|
as->trick_idx = strtol(trick_id_str, &end_str, 10);
|
|
if (trick_id_str == end_str || as->trick_idx < 0)
|
|
return AVERROR(EINVAL);
|
|
|
|
if (*p)
|
|
p++;
|
|
state = parse_default;
|
|
} else if ((state != new_set) && av_strstart(p, "streams=", &p)) { //descriptor and durations are optional
|
|
state = parsing_streams;
|
|
} else if (state == parsing_streams) {
|
|
AdaptationSet *as = &c->as[c->nb_as - 1];
|
|
char idx_str[8], *end_str;
|
|
|
|
n = strcspn(p, " ,");
|
|
snprintf(idx_str, sizeof(idx_str), "%.*s", n, p);
|
|
p += n;
|
|
|
|
// if value is "a" or "v", map all streams of that type
|
|
if (as->media_type == AVMEDIA_TYPE_UNKNOWN && (idx_str[0] == 'v' || idx_str[0] == 'a')) {
|
|
enum AVMediaType type = (idx_str[0] == 'v') ? AVMEDIA_TYPE_VIDEO : AVMEDIA_TYPE_AUDIO;
|
|
av_log(s, AV_LOG_DEBUG, "Map all streams of type %s\n", idx_str);
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
if (s->streams[i]->codecpar->codec_type != type)
|
|
continue;
|
|
|
|
as->media_type = s->streams[i]->codecpar->codec_type;
|
|
|
|
if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
|
|
return ret;
|
|
}
|
|
} else { // select single stream
|
|
i = strtol(idx_str, &end_str, 10);
|
|
if (idx_str == end_str || i < 0 || i >= s->nb_streams) {
|
|
av_log(s, AV_LOG_ERROR, "Selected stream \"%s\" not found!\n", idx_str);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
av_log(s, AV_LOG_DEBUG, "Map stream %d\n", i);
|
|
|
|
if (as->media_type == AVMEDIA_TYPE_UNKNOWN) {
|
|
as->media_type = s->streams[i]->codecpar->codec_type;
|
|
}
|
|
|
|
if ((ret = adaptation_set_add_stream(s, c->nb_as, i)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (*p == ' ')
|
|
state = new_set;
|
|
if (*p)
|
|
p++;
|
|
} else {
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
end:
|
|
// check for unassigned streams
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
OutputStream *os = &c->streams[i];
|
|
if (!os->as_idx) {
|
|
av_log(s, AV_LOG_ERROR, "Stream %d is not mapped to an AdaptationSet\n", i);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
// check references for trick mode AdaptationSet
|
|
for (i = 0; i < c->nb_as; i++) {
|
|
as = &c->as[i];
|
|
if (as->trick_idx < 0)
|
|
continue;
|
|
for (n = 0; n < c->nb_as; n++) {
|
|
if (c->as[n].id == as->trick_idx)
|
|
break;
|
|
}
|
|
if (n >= c->nb_as) {
|
|
av_log(s, AV_LOG_ERROR, "reference AdaptationSet id \"%d\" not found for trick mode AdaptationSet id \"%d\"\n", as->trick_idx, as->id);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int write_manifest(AVFormatContext *s, int final)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
AVIOContext *out;
|
|
char temp_filename[1024];
|
|
int ret, i;
|
|
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);
|
|
AVDictionary *opts = 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 temporary partial files\n");
|
|
|
|
snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", s->url);
|
|
set_http_options(&opts, c);
|
|
ret = dashenc_io_open(s, &c->mpd_out, temp_filename, &opts);
|
|
av_dict_free(&opts);
|
|
if (ret < 0) {
|
|
return handle_io_open_error(s, ret, temp_filename);
|
|
}
|
|
out = c->mpd_out;
|
|
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"
|
|
"\txmlns=\"urn:mpeg:dash:schema:mpd:2011\"\n"
|
|
"\txmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
|
|
"\txsi:schemaLocation=\"urn:mpeg:DASH:schema:MPD:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\"\n"
|
|
"\tprofiles=\"");
|
|
if (c->profile & MPD_PROFILE_DASH)
|
|
avio_printf(out, "%s%s", "urn:mpeg:dash:profile:isoff-live:2011", c->profile & MPD_PROFILE_DVB ? "," : "\"\n");
|
|
if (c->profile & MPD_PROFILE_DVB)
|
|
avio_printf(out, "%s", "urn:dvb:dash:profile:dvb-dash:2014\"\n");
|
|
avio_printf(out, "\ttype=\"%s\"\n",
|
|
final ? "static" : "dynamic");
|
|
if (final) {
|
|
avio_printf(out, "\tmediaPresentationDuration=\"");
|
|
write_time(out, c->total_duration);
|
|
avio_printf(out, "\"\n");
|
|
} else {
|
|
int64_t update_period = c->last_duration / AV_TIME_BASE;
|
|
char now_str[100];
|
|
if (c->use_template && !c->use_timeline)
|
|
update_period = 500;
|
|
avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
|
|
if (!c->ldash)
|
|
avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
|
|
if (c->availability_start_time[0])
|
|
avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
|
|
format_date(now_str, sizeof(now_str), av_gettime());
|
|
if (now_str[0])
|
|
avio_printf(out, "\tpublishTime=\"%s\"\n", now_str);
|
|
if (c->window_size && c->use_template) {
|
|
avio_printf(out, "\ttimeShiftBufferDepth=\"");
|
|
write_time(out, c->last_duration * c->window_size);
|
|
avio_printf(out, "\"\n");
|
|
}
|
|
}
|
|
avio_printf(out, "\tmaxSegmentDuration=\"");
|
|
write_time(out, c->max_segment_duration);
|
|
avio_printf(out, "\"\n");
|
|
avio_printf(out, "\tminBufferTime=\"");
|
|
write_time(out, c->ldash && c->max_gop_size ? c->max_gop_size : c->last_duration * 2);
|
|
avio_printf(out, "\">\n");
|
|
avio_printf(out, "\t<ProgramInformation>\n");
|
|
if (title) {
|
|
char *escaped = xmlescape(title->value);
|
|
avio_printf(out, "\t\t<Title>%s</Title>\n", escaped);
|
|
av_free(escaped);
|
|
}
|
|
avio_printf(out, "\t</ProgramInformation>\n");
|
|
|
|
avio_printf(out, "\t<ServiceDescription id=\"0\">\n");
|
|
if (!final && c->target_latency && c->target_latency_refid >= 0) {
|
|
avio_printf(out, "\t\t<Latency target=\"%"PRId64"\"", c->target_latency / 1000);
|
|
if (s->nb_streams > 1)
|
|
avio_printf(out, " referenceId=\"%d\"", c->target_latency_refid);
|
|
avio_printf(out, "/>\n");
|
|
}
|
|
if (av_cmp_q(c->min_playback_rate, (AVRational) {1, 1}) ||
|
|
av_cmp_q(c->max_playback_rate, (AVRational) {1, 1}))
|
|
avio_printf(out, "\t\t<PlaybackRate min=\"%.2f\" max=\"%.2f\"/>\n",
|
|
av_q2d(c->min_playback_rate), av_q2d(c->max_playback_rate));
|
|
avio_printf(out, "\t</ServiceDescription>\n");
|
|
|
|
if (c->window_size && s->nb_streams > 0 && c->streams[0].nb_segments > 0 && !c->use_template) {
|
|
OutputStream *os = &c->streams[0];
|
|
int start_index = FFMAX(os->nb_segments - c->window_size, 0);
|
|
int64_t start_time = av_rescale_q(os->segments[start_index]->time, s->streams[0]->time_base, AV_TIME_BASE_Q);
|
|
avio_printf(out, "\t<Period id=\"0\" start=\"");
|
|
write_time(out, start_time);
|
|
avio_printf(out, "\">\n");
|
|
} else {
|
|
avio_printf(out, "\t<Period id=\"0\" start=\"PT0.0S\">\n");
|
|
}
|
|
|
|
for (i = 0; i < c->nb_as; i++) {
|
|
if ((ret = write_adaptation_set(s, out, i, final)) < 0)
|
|
return ret;
|
|
}
|
|
avio_printf(out, "\t</Period>\n");
|
|
|
|
if (c->utc_timing_url)
|
|
avio_printf(out, "\t<UTCTiming schemeIdUri=\"urn:mpeg:dash:utc:http-xsdate:2014\" value=\"%s\"/>\n", c->utc_timing_url);
|
|
|
|
avio_printf(out, "</MPD>\n");
|
|
avio_flush(out);
|
|
dashenc_io_close(s, &c->mpd_out, temp_filename);
|
|
|
|
if (use_rename) {
|
|
if ((ret = ff_rename(temp_filename, s->url, s)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (c->hls_playlist) {
|
|
char filename_hls[1024];
|
|
const char *audio_group = "A1";
|
|
char audio_codec_str[128] = "\0";
|
|
int is_default = 1;
|
|
int max_audio_bitrate = 0;
|
|
|
|
// Publish master playlist only the configured rate
|
|
if (c->master_playlist_created && (!c->master_publish_rate ||
|
|
c->streams[0].segment_index % c->master_publish_rate))
|
|
return 0;
|
|
|
|
if (*c->dirname)
|
|
snprintf(filename_hls, sizeof(filename_hls), "%smaster.m3u8", c->dirname);
|
|
else
|
|
snprintf(filename_hls, sizeof(filename_hls), "master.m3u8");
|
|
|
|
snprintf(temp_filename, sizeof(temp_filename), use_rename ? "%s.tmp" : "%s", filename_hls);
|
|
|
|
set_http_options(&opts, c);
|
|
ret = dashenc_io_open(s, &c->m3u8_out, temp_filename, &opts);
|
|
av_dict_free(&opts);
|
|
if (ret < 0) {
|
|
return handle_io_open_error(s, ret, temp_filename);
|
|
}
|
|
|
|
ff_hls_write_playlist_version(c->m3u8_out, 7);
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
char playlist_file[64];
|
|
AVStream *st = s->streams[i];
|
|
OutputStream *os = &c->streams[i];
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
|
|
continue;
|
|
if (os->segment_type != SEGMENT_TYPE_MP4)
|
|
continue;
|
|
get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
|
|
ff_hls_write_audio_rendition(c->m3u8_out, (char *)audio_group,
|
|
playlist_file, NULL, i, is_default);
|
|
max_audio_bitrate = FFMAX(st->codecpar->bit_rate +
|
|
os->muxer_overhead, max_audio_bitrate);
|
|
if (!av_strnstr(audio_codec_str, os->codec_str, sizeof(audio_codec_str))) {
|
|
if (strlen(audio_codec_str))
|
|
av_strlcat(audio_codec_str, ",", sizeof(audio_codec_str));
|
|
av_strlcat(audio_codec_str, os->codec_str, sizeof(audio_codec_str));
|
|
}
|
|
is_default = 0;
|
|
}
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
char playlist_file[64];
|
|
char codec_str[128];
|
|
AVStream *st = s->streams[i];
|
|
OutputStream *os = &c->streams[i];
|
|
char *agroup = NULL;
|
|
char *codec_str_ptr = NULL;
|
|
int stream_bitrate = st->codecpar->bit_rate + os->muxer_overhead;
|
|
if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
|
|
continue;
|
|
if (os->segment_type != SEGMENT_TYPE_MP4)
|
|
continue;
|
|
av_strlcpy(codec_str, os->codec_str, sizeof(codec_str));
|
|
if (max_audio_bitrate) {
|
|
agroup = (char *)audio_group;
|
|
stream_bitrate += max_audio_bitrate;
|
|
av_strlcat(codec_str, ",", sizeof(codec_str));
|
|
av_strlcat(codec_str, audio_codec_str, sizeof(codec_str));
|
|
}
|
|
if (st->codecpar->codec_id != AV_CODEC_ID_HEVC) {
|
|
codec_str_ptr = codec_str;
|
|
}
|
|
get_hls_playlist_name(playlist_file, sizeof(playlist_file), NULL, i);
|
|
ff_hls_write_stream_info(st, c->m3u8_out, stream_bitrate,
|
|
playlist_file, agroup,
|
|
codec_str_ptr, NULL, NULL);
|
|
}
|
|
dashenc_io_close(s, &c->m3u8_out, temp_filename);
|
|
if (use_rename)
|
|
if ((ret = ff_rename(temp_filename, filename_hls, s)) < 0)
|
|
return ret;
|
|
c->master_playlist_created = 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dict_copy_entry(AVDictionary **dst, const AVDictionary *src, const char *key)
|
|
{
|
|
AVDictionaryEntry *entry = av_dict_get(src, key, NULL, 0);
|
|
if (entry)
|
|
av_dict_set(dst, key, entry->value, AV_DICT_DONT_OVERWRITE);
|
|
return 0;
|
|
}
|
|
|
|
static int dash_init(AVFormatContext *s)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
int ret = 0, i;
|
|
char *ptr;
|
|
char basename[1024];
|
|
|
|
c->nr_of_streams_to_flush = 0;
|
|
if (c->single_file_name)
|
|
c->single_file = 1;
|
|
if (c->single_file)
|
|
c->use_template = 0;
|
|
|
|
if (!c->profile) {
|
|
av_log(s, AV_LOG_ERROR, "At least one profile must be enabled.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
#if FF_API_DASH_MIN_SEG_DURATION
|
|
if (c->min_seg_duration != 5000000) {
|
|
av_log(s, AV_LOG_WARNING, "The min_seg_duration option is deprecated and will be removed. Please use the -seg_duration\n");
|
|
c->seg_duration = c->min_seg_duration;
|
|
}
|
|
#endif
|
|
if (c->lhls && s->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
|
|
av_log(s, AV_LOG_ERROR,
|
|
"LHLS is experimental, Please set -strict experimental in order to enable it.\n");
|
|
return AVERROR_EXPERIMENTAL;
|
|
}
|
|
|
|
if (c->lhls && !c->streaming) {
|
|
av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as streaming is not enabled\n");
|
|
c->lhls = 0;
|
|
}
|
|
|
|
if (c->lhls && !c->hls_playlist) {
|
|
av_log(s, AV_LOG_WARNING, "LHLS option will be ignored as hls_playlist is not enabled\n");
|
|
c->lhls = 0;
|
|
}
|
|
|
|
if (c->ldash && !c->streaming) {
|
|
av_log(s, AV_LOG_WARNING, "LDash option will be ignored as streaming is not enabled\n");
|
|
c->ldash = 0;
|
|
}
|
|
|
|
if (c->target_latency && !c->streaming) {
|
|
av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as streaming is not enabled\n");
|
|
c->target_latency = 0;
|
|
}
|
|
|
|
if (c->global_sidx && !c->single_file) {
|
|
av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as single_file is not enabled\n");
|
|
c->global_sidx = 0;
|
|
}
|
|
|
|
if (c->global_sidx && c->streaming) {
|
|
av_log(s, AV_LOG_WARNING, "Global SIDX option will be ignored as streaming is enabled\n");
|
|
c->global_sidx = 0;
|
|
}
|
|
if (c->frag_type == FRAG_TYPE_NONE && c->streaming) {
|
|
av_log(s, AV_LOG_VERBOSE, "Changing frag_type from none to every_frame as streaming is enabled\n");
|
|
c->frag_type = FRAG_TYPE_EVERY_FRAME;
|
|
}
|
|
|
|
if (c->write_prft < 0) {
|
|
c->write_prft = c->ldash;
|
|
if (c->ldash)
|
|
av_log(s, AV_LOG_VERBOSE, "Enabling Producer Reference Time element for Low Latency mode\n");
|
|
}
|
|
|
|
if (c->write_prft && !c->utc_timing_url) {
|
|
av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as utc_timing_url is not set\n");
|
|
c->write_prft = 0;
|
|
}
|
|
|
|
if (c->write_prft && !c->streaming) {
|
|
av_log(s, AV_LOG_WARNING, "Producer Reference Time element option will be ignored as streaming is not enabled\n");
|
|
c->write_prft = 0;
|
|
}
|
|
|
|
if (c->ldash && !c->write_prft) {
|
|
av_log(s, AV_LOG_WARNING, "Low Latency mode enabled without Producer Reference Time element option! Resulting manifest may not be complaint\n");
|
|
}
|
|
|
|
if (c->target_latency && !c->write_prft) {
|
|
av_log(s, AV_LOG_WARNING, "Target latency option will be ignored as Producer Reference Time element will not be written\n");
|
|
c->target_latency = 0;
|
|
}
|
|
|
|
if (av_cmp_q(c->max_playback_rate, c->min_playback_rate) < 0) {
|
|
av_log(s, AV_LOG_WARNING, "Minimum playback rate value is higer than the Maximum. Both will be ignored\n");
|
|
c->min_playback_rate = c->max_playback_rate = (AVRational) {1, 1};
|
|
}
|
|
|
|
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->url, sizeof(basename));
|
|
}
|
|
|
|
ptr = strrchr(basename, '.');
|
|
if (ptr)
|
|
*ptr = '\0';
|
|
|
|
c->streams = av_mallocz(sizeof(*c->streams) * s->nb_streams);
|
|
if (!c->streams)
|
|
return AVERROR(ENOMEM);
|
|
|
|
if ((ret = parse_adaptation_sets(s)) < 0)
|
|
return ret;
|
|
|
|
if ((ret = init_segment_types(s)) < 0)
|
|
return ret;
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
OutputStream *os = &c->streams[i];
|
|
AdaptationSet *as = &c->as[os->as_idx - 1];
|
|
AVFormatContext *ctx;
|
|
AVStream *st;
|
|
AVDictionary *opts = NULL;
|
|
char filename[1024];
|
|
|
|
os->bit_rate = s->streams[i]->codecpar->bit_rate;
|
|
if (!os->bit_rate) {
|
|
int level = s->strict_std_compliance >= FF_COMPLIANCE_STRICT ?
|
|
AV_LOG_ERROR : AV_LOG_WARNING;
|
|
av_log(s, level, "No bit rate set for stream %d\n", i);
|
|
if (s->strict_std_compliance >= FF_COMPLIANCE_STRICT)
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
// copy AdaptationSet language and role from stream metadata
|
|
dict_copy_entry(&as->metadata, s->streams[i]->metadata, "language");
|
|
dict_copy_entry(&as->metadata, s->streams[i]->metadata, "role");
|
|
|
|
if (c->init_seg_name) {
|
|
os->init_seg_name = av_strireplace(c->init_seg_name, "$ext$", os->extension_name);
|
|
if (!os->init_seg_name)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
if (c->media_seg_name) {
|
|
os->media_seg_name = av_strireplace(c->media_seg_name, "$ext$", os->extension_name);
|
|
if (!os->media_seg_name)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
if (c->single_file_name) {
|
|
os->single_file_name = av_strireplace(c->single_file_name, "$ext$", os->extension_name);
|
|
if (!os->single_file_name)
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
if (os->segment_type == SEGMENT_TYPE_WEBM) {
|
|
if ((!c->single_file && check_file_extension(os->init_seg_name, os->format_name) != 0) ||
|
|
(!c->single_file && check_file_extension(os->media_seg_name, os->format_name) != 0) ||
|
|
(c->single_file && check_file_extension(os->single_file_name, os->format_name) != 0)) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"One or many segment file names doesn't end with .webm. "
|
|
"Override -init_seg_name and/or -media_seg_name and/or "
|
|
"-single_file_name to end with the extension .webm\n");
|
|
}
|
|
if (c->streaming) {
|
|
// Streaming not supported as matroskaenc buffers internally before writing the output
|
|
av_log(s, AV_LOG_WARNING, "One or more streams in WebM output format. Streaming option will be ignored\n");
|
|
c->streaming = 0;
|
|
}
|
|
}
|
|
|
|
os->ctx = ctx = avformat_alloc_context();
|
|
if (!ctx)
|
|
return AVERROR(ENOMEM);
|
|
|
|
ctx->oformat = av_guess_format(os->format_name, NULL, NULL);
|
|
if (!ctx->oformat)
|
|
return AVERROR_MUXER_NOT_FOUND;
|
|
ctx->interrupt_callback = s->interrupt_callback;
|
|
ctx->opaque = s->opaque;
|
|
ctx->io_close = s->io_close;
|
|
ctx->io_open = s->io_open;
|
|
ctx->strict_std_compliance = s->strict_std_compliance;
|
|
|
|
if (!(st = avformat_new_stream(ctx, 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;
|
|
st->avg_frame_rate = s->streams[i]->avg_frame_rate;
|
|
ctx->avoid_negative_ts = s->avoid_negative_ts;
|
|
ctx->flags = s->flags;
|
|
|
|
os->parser = av_parser_init(st->codecpar->codec_id);
|
|
if (os->parser) {
|
|
os->parser_avctx = avcodec_alloc_context3(NULL);
|
|
if (!os->parser_avctx)
|
|
return AVERROR(ENOMEM);
|
|
ret = avcodec_parameters_to_context(os->parser_avctx, st->codecpar);
|
|
if (ret < 0)
|
|
return ret;
|
|
// We only want to parse frame headers
|
|
os->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
|
|
}
|
|
|
|
if (c->single_file) {
|
|
if (os->single_file_name)
|
|
ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->single_file_name, i, 0, os->bit_rate, 0);
|
|
else
|
|
snprintf(os->initfile, sizeof(os->initfile), "%s-stream%d.%s", basename, i, os->format_name);
|
|
} else {
|
|
ff_dash_fill_tmpl_params(os->initfile, sizeof(os->initfile), os->init_seg_name, i, 0, os->bit_rate, 0);
|
|
}
|
|
snprintf(filename, sizeof(filename), "%s%s", c->dirname, os->initfile);
|
|
set_http_options(&opts, c);
|
|
if (!c->single_file) {
|
|
if ((ret = avio_open_dyn_buf(&ctx->pb)) < 0)
|
|
return ret;
|
|
ret = s->io_open(s, &os->out, filename, AVIO_FLAG_WRITE, &opts);
|
|
} else {
|
|
ctx->url = av_strdup(filename);
|
|
ret = avio_open2(&ctx->pb, filename, AVIO_FLAG_WRITE, NULL, &opts);
|
|
}
|
|
av_dict_free(&opts);
|
|
if (ret < 0)
|
|
return ret;
|
|
os->init_start_pos = 0;
|
|
|
|
av_dict_copy(&opts, c->format_options, 0);
|
|
if (!as->seg_duration)
|
|
as->seg_duration = c->seg_duration;
|
|
if (!as->frag_duration)
|
|
as->frag_duration = c->frag_duration;
|
|
if (as->frag_type < 0)
|
|
as->frag_type = c->frag_type;
|
|
os->seg_duration = as->seg_duration;
|
|
os->frag_duration = as->frag_duration;
|
|
os->frag_type = as->frag_type;
|
|
|
|
c->max_segment_duration = FFMAX(c->max_segment_duration, as->seg_duration);
|
|
|
|
if (c->profile & MPD_PROFILE_DVB && (os->seg_duration > 15000000 || os->seg_duration < 960000)) {
|
|
av_log(s, AV_LOG_ERROR, "Segment duration %"PRId64" is outside the allowed range for DVB-DASH profile\n", os->seg_duration);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
if (os->frag_type == FRAG_TYPE_DURATION && !os->frag_duration) {
|
|
av_log(s, AV_LOG_WARNING, "frag_type set to duration for stream %d but no frag_duration set\n", i);
|
|
os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
|
|
}
|
|
if (os->frag_type == FRAG_TYPE_DURATION && os->frag_duration > os->seg_duration) {
|
|
av_log(s, AV_LOG_ERROR, "Fragment duration %"PRId64" is longer than Segment duration %"PRId64"\n", os->frag_duration, os->seg_duration);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (os->frag_type == FRAG_TYPE_PFRAMES && (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO || !os->parser)) {
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && !os->parser)
|
|
av_log(s, AV_LOG_WARNING, "frag_type set to P-Frame reordering, but no parser found for stream %d\n", i);
|
|
os->frag_type = c->streaming ? FRAG_TYPE_EVERY_FRAME : FRAG_TYPE_NONE;
|
|
}
|
|
if (os->frag_type != FRAG_TYPE_PFRAMES && as->trick_idx < 0)
|
|
// Set this now if a parser isn't used
|
|
os->coding_dependency = 1;
|
|
|
|
if (os->segment_type == SEGMENT_TYPE_MP4) {
|
|
if (c->streaming)
|
|
// skip_sidx : Reduce bitrate overhead
|
|
// skip_trailer : Avoids growing memory usage with time
|
|
av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_sidx+skip_trailer", AV_DICT_APPEND);
|
|
else {
|
|
if (c->global_sidx)
|
|
av_dict_set(&opts, "movflags", "+dash+delay_moov+global_sidx+skip_trailer", AV_DICT_APPEND);
|
|
else
|
|
av_dict_set(&opts, "movflags", "+dash+delay_moov+skip_trailer", AV_DICT_APPEND);
|
|
}
|
|
if (os->frag_type == FRAG_TYPE_EVERY_FRAME)
|
|
av_dict_set(&opts, "movflags", "+frag_every_frame", AV_DICT_APPEND);
|
|
else
|
|
av_dict_set(&opts, "movflags", "+frag_custom", AV_DICT_APPEND);
|
|
if (os->frag_type == FRAG_TYPE_DURATION)
|
|
av_dict_set_int(&opts, "frag_duration", os->frag_duration, 0);
|
|
if (c->write_prft)
|
|
av_dict_set(&opts, "write_prft", "wallclock", 0);
|
|
} else {
|
|
av_dict_set_int(&opts, "cluster_time_limit", c->seg_duration / 1000, 0);
|
|
av_dict_set_int(&opts, "cluster_size_limit", 5 * 1024 * 1024, 0); // set a large cluster size limit
|
|
av_dict_set_int(&opts, "dash", 1, 0);
|
|
av_dict_set_int(&opts, "dash_track_number", i + 1, 0);
|
|
av_dict_set_int(&opts, "live", 1, 0);
|
|
}
|
|
ret = avformat_init_output(ctx, &opts);
|
|
av_dict_free(&opts);
|
|
if (ret < 0)
|
|
return ret;
|
|
os->ctx_inited = 1;
|
|
avio_flush(ctx->pb);
|
|
|
|
av_log(s, AV_LOG_VERBOSE, "Representation %d init segment will be written to: %s\n", i, filename);
|
|
|
|
s->streams[i]->time_base = st->time_base;
|
|
// If the muxer wants to shift timestamps, request to have them shifted
|
|
// already before being handed to this muxer, so we don't have mismatches
|
|
// between the MPD and the actual segments.
|
|
s->avoid_negative_ts = ctx->avoid_negative_ts;
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
AVRational avg_frame_rate = s->streams[i]->avg_frame_rate;
|
|
AVRational par;
|
|
if (avg_frame_rate.num > 0) {
|
|
if (av_cmp_q(avg_frame_rate, as->min_frame_rate) < 0)
|
|
as->min_frame_rate = avg_frame_rate;
|
|
if (av_cmp_q(as->max_frame_rate, avg_frame_rate) < 0)
|
|
as->max_frame_rate = avg_frame_rate;
|
|
} else {
|
|
as->ambiguous_frame_rate = 1;
|
|
}
|
|
|
|
if (st->codecpar->width > as->max_width)
|
|
as->max_width = st->codecpar->width;
|
|
if (st->codecpar->height > as->max_height)
|
|
as->max_height = st->codecpar->height;
|
|
|
|
if (st->sample_aspect_ratio.num)
|
|
os->sar = st->sample_aspect_ratio;
|
|
else
|
|
os->sar = (AVRational){1,1};
|
|
av_reduce(&par.num, &par.den,
|
|
st->codecpar->width * (int64_t)os->sar.num,
|
|
st->codecpar->height * (int64_t)os->sar.den,
|
|
1024 * 1024);
|
|
|
|
if (as->par.num && av_cmp_q(par, as->par)) {
|
|
av_log(s, AV_LOG_ERROR, "Conflicting stream par values in Adaptation Set %d\n", os->as_idx);
|
|
return AVERROR(EINVAL);
|
|
}
|
|
as->par = par;
|
|
|
|
c->has_video = 1;
|
|
}
|
|
|
|
set_codec_str(s, st->codecpar, &st->avg_frame_rate, os->codec_str,
|
|
sizeof(os->codec_str));
|
|
os->first_pts = AV_NOPTS_VALUE;
|
|
os->max_pts = AV_NOPTS_VALUE;
|
|
os->last_dts = AV_NOPTS_VALUE;
|
|
os->segment_index = 1;
|
|
|
|
if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
|
|
c->nr_of_streams_to_flush++;
|
|
}
|
|
|
|
if (!c->has_video && c->seg_duration <= 0) {
|
|
av_log(s, AV_LOG_WARNING, "no video stream and no seg duration set\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (!c->has_video && c->frag_type == FRAG_TYPE_PFRAMES)
|
|
av_log(s, AV_LOG_WARNING, "no video stream and P-frame fragmentation set\n");
|
|
|
|
c->nr_of_streams_flushed = 0;
|
|
c->target_latency_refid = -1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dash_write_header(AVFormatContext *s)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
int i, ret;
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
OutputStream *os = &c->streams[i];
|
|
if ((ret = avformat_write_header(os->ctx, NULL)) < 0)
|
|
return ret;
|
|
|
|
// Flush init segment
|
|
// Only for WebM segment, since for mp4 delay_moov is set and
|
|
// the init segment is thus flushed after the first packets.
|
|
if (os->segment_type == SEGMENT_TYPE_WEBM &&
|
|
(ret = flush_init_segment(s, os)) < 0)
|
|
return ret;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int add_segment(OutputStream *os, const char *file,
|
|
int64_t time, int64_t duration,
|
|
int64_t start_pos, int64_t range_length,
|
|
int64_t index_length, int next_exp_index)
|
|
{
|
|
int err;
|
|
Segment *seg;
|
|
if (os->nb_segments >= os->segments_size) {
|
|
os->segments_size = (os->segments_size + 1) * 2;
|
|
if ((err = av_reallocp_array(&os->segments, sizeof(*os->segments),
|
|
os->segments_size)) < 0) {
|
|
os->segments_size = 0;
|
|
os->nb_segments = 0;
|
|
return err;
|
|
}
|
|
}
|
|
seg = av_mallocz(sizeof(*seg));
|
|
if (!seg)
|
|
return AVERROR(ENOMEM);
|
|
av_strlcpy(seg->file, file, sizeof(seg->file));
|
|
seg->time = time;
|
|
seg->duration = duration;
|
|
if (seg->time < 0) { // If pts<0, it is expected to be cut away with an edit list
|
|
seg->duration += seg->time;
|
|
seg->time = 0;
|
|
}
|
|
seg->start_pos = start_pos;
|
|
seg->range_length = range_length;
|
|
seg->index_length = index_length;
|
|
os->segments[os->nb_segments++] = seg;
|
|
os->segment_index++;
|
|
//correcting the segment index if it has fallen behind the expected value
|
|
if (os->segment_index < next_exp_index) {
|
|
av_log(NULL, AV_LOG_WARNING, "Correcting the segment index after file %s: current=%d corrected=%d\n",
|
|
file, os->segment_index, next_exp_index);
|
|
os->segment_index = next_exp_index;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void write_styp(AVIOContext *pb)
|
|
{
|
|
avio_wb32(pb, 24);
|
|
ffio_wfourcc(pb, "styp");
|
|
ffio_wfourcc(pb, "msdh");
|
|
avio_wb32(pb, 0); /* minor */
|
|
ffio_wfourcc(pb, "msdh");
|
|
ffio_wfourcc(pb, "msix");
|
|
}
|
|
|
|
static void find_index_range(AVFormatContext *s, const char *full_path,
|
|
int64_t pos, int *index_length)
|
|
{
|
|
uint8_t buf[8];
|
|
AVIOContext *pb;
|
|
int ret;
|
|
|
|
ret = s->io_open(s, &pb, full_path, AVIO_FLAG_READ, NULL);
|
|
if (ret < 0)
|
|
return;
|
|
if (avio_seek(pb, pos, SEEK_SET) != pos) {
|
|
ff_format_io_close(s, &pb);
|
|
return;
|
|
}
|
|
ret = avio_read(pb, buf, 8);
|
|
ff_format_io_close(s, &pb);
|
|
if (ret < 8)
|
|
return;
|
|
if (AV_RL32(&buf[4]) != MKTAG('s', 'i', 'd', 'x'))
|
|
return;
|
|
*index_length = AV_RB32(&buf[0]);
|
|
}
|
|
|
|
static int update_stream_extradata(AVFormatContext *s, OutputStream *os,
|
|
AVPacket *pkt, AVRational *frame_rate)
|
|
{
|
|
AVCodecParameters *par = os->ctx->streams[0]->codecpar;
|
|
uint8_t *extradata;
|
|
int ret, extradata_size;
|
|
|
|
if (par->extradata_size)
|
|
return 0;
|
|
|
|
extradata = av_packet_get_side_data(pkt, AV_PKT_DATA_NEW_EXTRADATA, &extradata_size);
|
|
if (!extradata_size)
|
|
return 0;
|
|
|
|
ret = ff_alloc_extradata(par, extradata_size);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
memcpy(par->extradata, extradata, extradata_size);
|
|
|
|
set_codec_str(s, par, frame_rate, os->codec_str, sizeof(os->codec_str));
|
|
|
|
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);
|
|
ff_format_io_close(s, &out);
|
|
} else {
|
|
int res = avpriv_io_delete(filename);
|
|
if (res < 0) {
|
|
char errbuf[AV_ERROR_MAX_STRING_SIZE];
|
|
av_strerror(res, errbuf, sizeof(errbuf));
|
|
av_log(s, (res == AVERROR(ENOENT) ? AV_LOG_WARNING : AV_LOG_ERROR), "failed to delete %s: %s\n", filename, errbuf);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int dashenc_delete_segment_file(AVFormatContext *s, const char* file)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
AVBPrint buf;
|
|
|
|
av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
|
|
|
|
av_bprintf(&buf, "%s%s", c->dirname, file);
|
|
if (!av_bprint_is_complete(&buf)) {
|
|
av_bprint_finalize(&buf, NULL);
|
|
av_log(s, AV_LOG_WARNING, "Out of memory for filename\n");
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
dashenc_delete_file(s, buf.str);
|
|
|
|
av_bprint_finalize(&buf, NULL);
|
|
return 0;
|
|
}
|
|
|
|
static inline void dashenc_delete_media_segments(AVFormatContext *s, OutputStream *os, int remove_count)
|
|
{
|
|
for (int i = 0; i < remove_count; ++i) {
|
|
dashenc_delete_segment_file(s, os->segments[i]->file);
|
|
|
|
// Delete the segment regardless of whether the file was successfully deleted
|
|
av_free(os->segments[i]);
|
|
}
|
|
|
|
os->nb_segments -= remove_count;
|
|
memmove(os->segments, os->segments + remove_count, os->nb_segments * sizeof(*os->segments));
|
|
}
|
|
|
|
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->url);
|
|
int use_rename = proto && !strcmp(proto, "file");
|
|
|
|
int cur_flush_segment_index = 0, next_exp_index = -1;
|
|
if (stream >= 0) {
|
|
cur_flush_segment_index = c->streams[stream].segment_index;
|
|
|
|
//finding the next segment's expected index, based on the current pts value
|
|
if (c->use_template && !c->use_timeline && c->index_correction &&
|
|
c->streams[stream].last_pts != AV_NOPTS_VALUE &&
|
|
c->streams[stream].first_pts != AV_NOPTS_VALUE) {
|
|
int64_t pts_diff = av_rescale_q(c->streams[stream].last_pts -
|
|
c->streams[stream].first_pts,
|
|
s->streams[stream]->time_base,
|
|
AV_TIME_BASE_Q);
|
|
next_exp_index = (pts_diff / c->streams[stream].seg_duration) + 1;
|
|
}
|
|
}
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
OutputStream *os = &c->streams[i];
|
|
AVStream *st = s->streams[i];
|
|
int range_length, index_length = 0;
|
|
int64_t duration;
|
|
|
|
if (!os->packets_written)
|
|
continue;
|
|
|
|
// Flush the single stream that got a keyframe right now.
|
|
// Flush all audio streams as well, in sync with video keyframes,
|
|
// but not the other video streams.
|
|
if (stream >= 0 && i != stream) {
|
|
if (s->streams[stream]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO &&
|
|
s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
|
|
continue;
|
|
if (s->streams[i]->codecpar->codec_type != AVMEDIA_TYPE_AUDIO)
|
|
continue;
|
|
// Make sure we don't flush audio streams multiple times, when
|
|
// all video streams are flushed one at a time.
|
|
if (c->has_video && os->segment_index > cur_flush_segment_index)
|
|
continue;
|
|
}
|
|
|
|
if (c->single_file)
|
|
snprintf(os->full_path, sizeof(os->full_path), "%s%s", c->dirname, os->initfile);
|
|
|
|
ret = flush_dynbuf(c, os, &range_length);
|
|
if (ret < 0)
|
|
break;
|
|
os->packets_written = 0;
|
|
|
|
if (c->single_file) {
|
|
find_index_range(s, os->full_path, os->pos, &index_length);
|
|
} else {
|
|
dashenc_io_close(s, &os->out, os->temp_path);
|
|
|
|
if (use_rename) {
|
|
ret = ff_rename(os->temp_path, os->full_path, os->ctx);
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
}
|
|
|
|
duration = av_rescale_q(os->max_pts - os->start_pts, st->time_base, AV_TIME_BASE_Q);
|
|
os->last_duration = FFMAX(os->last_duration, duration);
|
|
|
|
if (!os->muxer_overhead && os->max_pts > os->start_pts)
|
|
os->muxer_overhead = ((int64_t) (range_length - os->total_pkt_size) *
|
|
8 * AV_TIME_BASE) / duration;
|
|
os->total_pkt_size = 0;
|
|
os->total_pkt_duration = 0;
|
|
|
|
if (!os->bit_rate) {
|
|
// calculate average bitrate of first segment
|
|
int64_t bitrate = (int64_t) range_length * 8 * (c->use_timeline ? os->ctx->streams[0]->time_base.den : AV_TIME_BASE) / duration;
|
|
if (bitrate >= 0)
|
|
os->bit_rate = bitrate;
|
|
}
|
|
add_segment(os, os->filename, os->start_pts, os->max_pts - os->start_pts, os->pos, range_length, index_length, next_exp_index);
|
|
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;
|
|
}
|
|
|
|
if (c->window_size) {
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
OutputStream *os = &c->streams[i];
|
|
int remove_count = os->nb_segments - c->window_size - c->extra_window_size;
|
|
if (remove_count > 0)
|
|
dashenc_delete_media_segments(s, os, remove_count);
|
|
}
|
|
}
|
|
|
|
if (final) {
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
OutputStream *os = &c->streams[i];
|
|
if (os->ctx && os->ctx_inited) {
|
|
int64_t file_size = avio_tell(os->ctx->pb);
|
|
av_write_trailer(os->ctx);
|
|
if (c->global_sidx) {
|
|
int j, start_index, start_number;
|
|
int64_t sidx_size = avio_tell(os->ctx->pb) - file_size;
|
|
get_start_index_number(os, c, &start_index, &start_number);
|
|
if (start_index >= os->nb_segments ||
|
|
os->segment_type != SEGMENT_TYPE_MP4)
|
|
continue;
|
|
os->init_range_length += sidx_size;
|
|
for (j = start_index; j < os->nb_segments; j++) {
|
|
Segment *seg = os->segments[j];
|
|
seg->start_pos += sidx_size;
|
|
}
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
if (ret >= 0) {
|
|
if (c->has_video && !final) {
|
|
c->nr_of_streams_flushed++;
|
|
if (c->nr_of_streams_flushed != c->nr_of_streams_to_flush)
|
|
return ret;
|
|
|
|
c->nr_of_streams_flushed = 0;
|
|
}
|
|
ret = write_manifest(s, final);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static int dash_parse_prft(DASHContext *c, AVPacket *pkt)
|
|
{
|
|
OutputStream *os = &c->streams[pkt->stream_index];
|
|
AVProducerReferenceTime *prft;
|
|
int side_data_size;
|
|
|
|
prft = (AVProducerReferenceTime *)av_packet_get_side_data(pkt, AV_PKT_DATA_PRFT, &side_data_size);
|
|
if (!prft || side_data_size != sizeof(AVProducerReferenceTime) || (prft->flags && prft->flags != 24)) {
|
|
// No encoder generated or user provided capture time AVProducerReferenceTime side data. Instead
|
|
// of letting the mov muxer generate one, do it here so we can also use it for the manifest.
|
|
prft = (AVProducerReferenceTime *)av_packet_new_side_data(pkt, AV_PKT_DATA_PRFT,
|
|
sizeof(AVProducerReferenceTime));
|
|
if (!prft)
|
|
return AVERROR(ENOMEM);
|
|
prft->wallclock = av_gettime();
|
|
prft->flags = 24;
|
|
}
|
|
if (os->first_pts == AV_NOPTS_VALUE) {
|
|
os->producer_reference_time = *prft;
|
|
if (c->target_latency_refid < 0)
|
|
c->target_latency_refid = pkt->stream_index;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
AVStream *st = s->streams[pkt->stream_index];
|
|
OutputStream *os = &c->streams[pkt->stream_index];
|
|
AdaptationSet *as = &c->as[os->as_idx - 1];
|
|
int64_t seg_end_duration, elapsed_duration;
|
|
int ret;
|
|
|
|
ret = update_stream_extradata(s, os, pkt, &st->avg_frame_rate);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
// Fill in a heuristic guess of the packet duration, if none is available.
|
|
// The mp4 muxer will do something similar (for the last packet in a fragment)
|
|
// if nothing is set (setting it for the other packets doesn't hurt).
|
|
// By setting a nonzero duration here, we can be sure that the mp4 muxer won't
|
|
// invoke its heuristic (this doesn't have to be identical to that algorithm),
|
|
// so that we know the exact timestamps of fragments.
|
|
if (!pkt->duration && os->last_dts != AV_NOPTS_VALUE)
|
|
pkt->duration = pkt->dts - os->last_dts;
|
|
os->last_dts = pkt->dts;
|
|
|
|
// If forcing the stream to start at 0, the mp4 muxer will set the start
|
|
// timestamps to 0. Do the same here, to avoid mismatches in duration/timestamps.
|
|
if (os->first_pts == AV_NOPTS_VALUE &&
|
|
s->avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO) {
|
|
pkt->pts -= pkt->dts;
|
|
pkt->dts = 0;
|
|
}
|
|
|
|
if (c->write_prft) {
|
|
ret = dash_parse_prft(c, pkt);
|
|
if (ret < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (os->first_pts == AV_NOPTS_VALUE) {
|
|
os->first_pts = pkt->pts;
|
|
}
|
|
os->last_pts = pkt->pts;
|
|
|
|
if (!c->availability_start_time[0]) {
|
|
int64_t start_time_us = av_gettime();
|
|
c->start_time_s = start_time_us / 1000000;
|
|
format_date(c->availability_start_time,
|
|
sizeof(c->availability_start_time), start_time_us);
|
|
}
|
|
|
|
if (!os->packets_written)
|
|
os->availability_time_offset = 0;
|
|
|
|
if (!os->availability_time_offset &&
|
|
((os->frag_type == FRAG_TYPE_DURATION && os->seg_duration != os->frag_duration) ||
|
|
(os->frag_type == FRAG_TYPE_EVERY_FRAME && pkt->duration))) {
|
|
AdaptationSet *as = &c->as[os->as_idx - 1];
|
|
int64_t frame_duration = 0;
|
|
|
|
switch (os->frag_type) {
|
|
case FRAG_TYPE_DURATION:
|
|
frame_duration = os->frag_duration;
|
|
break;
|
|
case FRAG_TYPE_EVERY_FRAME:
|
|
frame_duration = av_rescale_q(pkt->duration, st->time_base, AV_TIME_BASE_Q);
|
|
break;
|
|
}
|
|
|
|
os->availability_time_offset = ((double) os->seg_duration -
|
|
frame_duration) / AV_TIME_BASE;
|
|
as->max_frag_duration = FFMAX(frame_duration, as->max_frag_duration);
|
|
}
|
|
|
|
if (c->use_template && !c->use_timeline) {
|
|
elapsed_duration = pkt->pts - os->first_pts;
|
|
seg_end_duration = (int64_t) os->segment_index * os->seg_duration;
|
|
} else {
|
|
elapsed_duration = pkt->pts - os->start_pts;
|
|
seg_end_duration = os->seg_duration;
|
|
}
|
|
|
|
if (os->parser &&
|
|
(os->frag_type == FRAG_TYPE_PFRAMES ||
|
|
as->trick_idx >= 0)) {
|
|
// Parse the packets only in scenarios where it's needed
|
|
uint8_t *data;
|
|
int size;
|
|
av_parser_parse2(os->parser, os->parser_avctx,
|
|
&data, &size, pkt->data, pkt->size,
|
|
pkt->pts, pkt->dts, pkt->pos);
|
|
|
|
os->coding_dependency |= os->parser->pict_type != AV_PICTURE_TYPE_I;
|
|
}
|
|
|
|
if (pkt->flags & AV_PKT_FLAG_KEY && os->packets_written &&
|
|
av_compare_ts(elapsed_duration, st->time_base,
|
|
seg_end_duration, AV_TIME_BASE_Q) >= 0) {
|
|
if (!c->has_video || st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
|
|
c->last_duration = av_rescale_q(pkt->pts - os->start_pts,
|
|
st->time_base,
|
|
AV_TIME_BASE_Q);
|
|
c->total_duration = av_rescale_q(pkt->pts - os->first_pts,
|
|
st->time_base,
|
|
AV_TIME_BASE_Q);
|
|
|
|
if ((!c->use_timeline || !c->use_template) && os->last_duration) {
|
|
if (c->last_duration < os->last_duration*9/10 ||
|
|
c->last_duration > os->last_duration*11/10) {
|
|
av_log(s, AV_LOG_WARNING,
|
|
"Segment durations differ too much, enable use_timeline "
|
|
"and use_template, or keep a stricter keyframe interval\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (c->write_prft && os->producer_reference_time.wallclock && !os->producer_reference_time_str[0])
|
|
format_date(os->producer_reference_time_str,
|
|
sizeof(os->producer_reference_time_str),
|
|
os->producer_reference_time.wallclock);
|
|
|
|
if ((ret = dash_flush(s, 0, pkt->stream_index)) < 0)
|
|
return ret;
|
|
}
|
|
|
|
if (!os->packets_written) {
|
|
// If we wrote a previous segment, adjust the start time of the segment
|
|
// to the end of the previous one (which is the same as the mp4 muxer
|
|
// does). This avoids gaps in the timeline.
|
|
if (os->max_pts != AV_NOPTS_VALUE)
|
|
os->start_pts = os->max_pts;
|
|
else
|
|
os->start_pts = pkt->pts;
|
|
}
|
|
if (os->max_pts == AV_NOPTS_VALUE)
|
|
os->max_pts = pkt->pts + pkt->duration;
|
|
else
|
|
os->max_pts = FFMAX(os->max_pts, pkt->pts + pkt->duration);
|
|
|
|
if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
|
|
os->frag_type == FRAG_TYPE_PFRAMES &&
|
|
os->packets_written) {
|
|
av_assert0(os->parser);
|
|
if ((os->parser->pict_type == AV_PICTURE_TYPE_P &&
|
|
st->codecpar->video_delay &&
|
|
!(os->last_flags & AV_PKT_FLAG_KEY)) ||
|
|
pkt->flags & AV_PKT_FLAG_KEY) {
|
|
ret = av_write_frame(os->ctx, NULL);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if (!os->availability_time_offset) {
|
|
int64_t frag_duration = av_rescale_q(os->total_pkt_duration, st->time_base,
|
|
AV_TIME_BASE_Q);
|
|
os->availability_time_offset = ((double) os->seg_duration -
|
|
frag_duration) / AV_TIME_BASE;
|
|
as->max_frag_duration = FFMAX(frag_duration, as->max_frag_duration);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (pkt->flags & AV_PKT_FLAG_KEY && (os->packets_written || os->nb_segments) && !os->gop_size && as->trick_idx < 0) {
|
|
os->gop_size = os->last_duration + av_rescale_q(os->total_pkt_duration, st->time_base, AV_TIME_BASE_Q);
|
|
c->max_gop_size = FFMAX(c->max_gop_size, os->gop_size);
|
|
}
|
|
|
|
if ((ret = ff_write_chained(os->ctx, 0, pkt, s, 0)) < 0)
|
|
return ret;
|
|
|
|
os->packets_written++;
|
|
os->total_pkt_size += pkt->size;
|
|
os->total_pkt_duration += pkt->duration;
|
|
os->last_flags = pkt->flags;
|
|
|
|
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");
|
|
if (os->segment_type == SEGMENT_TYPE_MP4)
|
|
write_styp(os->ctx->pb);
|
|
os->filename[0] = os->full_path[0] = os->temp_path[0] = '\0';
|
|
ff_dash_fill_tmpl_params(os->filename, sizeof(os->filename),
|
|
os->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);
|
|
av_dict_free(&opts);
|
|
if (ret < 0) {
|
|
return handle_io_open_error(s, ret, os->temp_path);
|
|
}
|
|
if (c->lhls) {
|
|
char *prefetch_url = use_rename ? NULL : os->filename;
|
|
write_hls_media_playlist(os, s, pkt->stream_index, 0, prefetch_url);
|
|
}
|
|
}
|
|
|
|
//write out the data immediately in streaming mode
|
|
if (c->streaming && os->segment_type == SEGMENT_TYPE_MP4) {
|
|
int len = 0;
|
|
uint8_t *buf = NULL;
|
|
avio_flush(os->ctx->pb);
|
|
len = avio_get_dyn_buf (os->ctx->pb, &buf);
|
|
if (os->out) {
|
|
avio_write(os->out, buf + os->written_len, len - os->written_len);
|
|
avio_flush(os->out);
|
|
}
|
|
os->written_len = len;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int dash_write_trailer(AVFormatContext *s)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
int i;
|
|
|
|
if (s->nb_streams > 0) {
|
|
OutputStream *os = &c->streams[0];
|
|
// If no segments have been written so far, try to do a crude
|
|
// guess of the segment duration
|
|
if (!c->last_duration)
|
|
c->last_duration = av_rescale_q(os->max_pts - os->start_pts,
|
|
s->streams[0]->time_base,
|
|
AV_TIME_BASE_Q);
|
|
c->total_duration = av_rescale_q(os->max_pts - os->first_pts,
|
|
s->streams[0]->time_base,
|
|
AV_TIME_BASE_Q);
|
|
}
|
|
dash_flush(s, 1, -1);
|
|
|
|
if (c->remove_at_exit) {
|
|
for (i = 0; i < s->nb_streams; ++i) {
|
|
OutputStream *os = &c->streams[i];
|
|
dashenc_delete_media_segments(s, os, os->nb_segments);
|
|
dashenc_delete_segment_file(s, os->initfile);
|
|
if (c->hls_playlist && os->segment_type == SEGMENT_TYPE_MP4) {
|
|
char filename[1024];
|
|
get_hls_playlist_name(filename, sizeof(filename), c->dirname, i);
|
|
dashenc_delete_file(s, filename);
|
|
}
|
|
}
|
|
dashenc_delete_file(s, s->url);
|
|
|
|
if (c->hls_playlist && c->master_playlist_created) {
|
|
char filename[1024];
|
|
snprintf(filename, sizeof(filename), "%smaster.m3u8", c->dirname);
|
|
dashenc_delete_file(s, filename);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int dash_check_bitstream(struct AVFormatContext *s, const AVPacket *avpkt)
|
|
{
|
|
DASHContext *c = s->priv_data;
|
|
OutputStream *os = &c->streams[avpkt->stream_index];
|
|
AVFormatContext *oc = os->ctx;
|
|
if (oc->oformat->check_bitstream) {
|
|
int ret;
|
|
AVPacket pkt = *avpkt;
|
|
pkt.stream_index = 0;
|
|
ret = oc->oformat->check_bitstream(oc, &pkt);
|
|
if (ret == 1) {
|
|
AVStream *st = s->streams[avpkt->stream_index];
|
|
AVStream *ost = oc->streams[0];
|
|
st->internal->bsfc = ost->internal->bsfc;
|
|
ost->internal->bsfc = NULL;
|
|
}
|
|
return ret;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(DASHContext, x)
|
|
#define E AV_OPT_FLAG_ENCODING_PARAM
|
|
static const AVOption options[] = {
|
|
{ "adaptation_sets", "Adaptation sets. Syntax: id=0,streams=0,1,2 id=1,streams=3,4 and so on", OFFSET(adaptation_sets), AV_OPT_TYPE_STRING, { 0 }, 0, 0, AV_OPT_FLAG_ENCODING_PARAM },
|
|
{ "window_size", "number of segments kept in the manifest", OFFSET(window_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, E },
|
|
{ "extra_window_size", "number of segments kept outside of the manifest before removing from disk", OFFSET(extra_window_size), AV_OPT_TYPE_INT, { .i64 = 5 }, 0, INT_MAX, E },
|
|
#if FF_API_DASH_MIN_SEG_DURATION
|
|
{ "min_seg_duration", "minimum segment duration (in microseconds) (will be deprecated)", OFFSET(min_seg_duration), AV_OPT_TYPE_INT, { .i64 = 5000000 }, 0, INT_MAX, E },
|
|
#endif
|
|
{ "seg_duration", "segment duration (in seconds, fractional value can be set)", OFFSET(seg_duration), AV_OPT_TYPE_DURATION, { .i64 = 5000000 }, 0, INT_MAX, E },
|
|
{ "frag_duration", "fragment duration (in seconds, fractional value can be set)", OFFSET(frag_duration), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
|
|
{ "frag_type", "set type of interval for fragments", OFFSET(frag_type), AV_OPT_TYPE_INT, {.i64 = FRAG_TYPE_NONE }, 0, FRAG_TYPE_NB - 1, E, "frag_type"},
|
|
{ "none", "one fragment per segment", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_NONE }, 0, UINT_MAX, E, "frag_type"},
|
|
{ "every_frame", "fragment at every frame", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_EVERY_FRAME }, 0, UINT_MAX, E, "frag_type"},
|
|
{ "duration", "fragment at specific time intervals", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_DURATION }, 0, UINT_MAX, E, "frag_type"},
|
|
{ "pframes", "fragment at keyframes and following P-Frame reordering (Video only, experimental)", 0, AV_OPT_TYPE_CONST, {.i64 = FRAG_TYPE_PFRAMES }, 0, UINT_MAX, E, "frag_type"},
|
|
{ "remove_at_exit", "remove all segments when finished", OFFSET(remove_at_exit), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
|
|
{ "use_template", "Use SegmentTemplate instead of SegmentList", OFFSET(use_template), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
|
|
{ "use_timeline", "Use SegmentTimeline in SegmentTemplate", OFFSET(use_timeline), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, E },
|
|
{ "single_file", "Store all segments in one file, accessed using byte ranges", OFFSET(single_file), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
|
|
{ "single_file_name", "DASH-templated name to be used for baseURL. Implies storing all segments in one file, accessed using byte ranges", OFFSET(single_file_name), AV_OPT_TYPE_STRING, { .str = NULL }, 0, 0, E },
|
|
{ "init_seg_name", "DASH-templated name to used for the initialization segment", OFFSET(init_seg_name), AV_OPT_TYPE_STRING, {.str = "init-stream$RepresentationID$.$ext$"}, 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$RepresentationID$-$Number%05d$.$ext$"}, 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 },
|
|
{ "timeout", "set timeout for socket I/O operations", OFFSET(timeout), AV_OPT_TYPE_DURATION, { .i64 = -1 }, -1, INT_MAX, .flags = E },
|
|
{ "index_correction", "Enable/Disable segment index correction logic", OFFSET(index_correction), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
|
|
{ "format_options","set list of options for the container format (mp4/webm) used for dash", OFFSET(format_options), AV_OPT_TYPE_DICT, {.str = NULL}, 0, 0, E},
|
|
{ "global_sidx", "Write global SIDX atom. Applicable only for single file, mp4 output, non-streaming mode", OFFSET(global_sidx), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
|
|
{ "dash_segment_type", "set dash segment files type", OFFSET(segment_type_option), AV_OPT_TYPE_INT, {.i64 = SEGMENT_TYPE_AUTO }, 0, SEGMENT_TYPE_NB - 1, E, "segment_type"},
|
|
{ "auto", "select segment file format based on codec", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_AUTO }, 0, UINT_MAX, E, "segment_type"},
|
|
{ "mp4", "make segment file in ISOBMFF format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_MP4 }, 0, UINT_MAX, E, "segment_type"},
|
|
{ "webm", "make segment file in WebM format", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_TYPE_WEBM }, 0, UINT_MAX, E, "segment_type"},
|
|
{ "ignore_io_errors", "Ignore IO errors during open and write. Useful for long-duration runs with network output", OFFSET(ignore_io_errors), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
|
|
{ "lhls", "Enable Low-latency HLS(Experimental). Adds #EXT-X-PREFETCH tag with current segment's URI", OFFSET(lhls), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
|
|
{ "ldash", "Enable Low-latency dash. Constrains the value of a few elements", OFFSET(ldash), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, E },
|
|
{ "master_m3u8_publish_rate", "Publish master playlist every after this many segment intervals", OFFSET(master_publish_rate), AV_OPT_TYPE_INT, {.i64 = 0}, 0, UINT_MAX, E},
|
|
{ "write_prft", "Write producer reference time element", OFFSET(write_prft), AV_OPT_TYPE_BOOL, {.i64 = -1}, -1, 1, E},
|
|
{ "mpd_profile", "Set profiles. Elements and values used in the manifest may be constrained by them", OFFSET(profile), AV_OPT_TYPE_FLAGS, {.i64 = MPD_PROFILE_DASH }, 0, UINT_MAX, E, "mpd_profile"},
|
|
{ "dash", "MPEG-DASH ISO Base media file format live profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DASH }, 0, UINT_MAX, E, "mpd_profile"},
|
|
{ "dvb_dash", "DVB-DASH profile", 0, AV_OPT_TYPE_CONST, {.i64 = MPD_PROFILE_DVB }, 0, UINT_MAX, E, "mpd_profile"},
|
|
{ "http_opts", "HTTP protocol options", OFFSET(http_opts), AV_OPT_TYPE_DICT, { .str = NULL }, 0, 0, E },
|
|
{ "target_latency", "Set desired target latency for Low-latency dash", OFFSET(target_latency), AV_OPT_TYPE_DURATION, { .i64 = 0 }, 0, INT_MAX, E },
|
|
{ "min_playback_rate", "Set desired minimum playback rate", OFFSET(min_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
|
|
{ "max_playback_rate", "Set desired maximum playback rate", OFFSET(max_playback_rate), AV_OPT_TYPE_RATIONAL, { .dbl = 1.0 }, 0.5, 1.5, E },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass dash_class = {
|
|
.class_name = "dash muxer",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
AVOutputFormat ff_dash_muxer = {
|
|
.name = "dash",
|
|
.long_name = NULL_IF_CONFIG_SMALL("DASH Muxer"),
|
|
.extensions = "mpd",
|
|
.priv_data_size = sizeof(DASHContext),
|
|
.audio_codec = AV_CODEC_ID_AAC,
|
|
.video_codec = AV_CODEC_ID_H264,
|
|
.flags = AVFMT_GLOBALHEADER | AVFMT_NOFILE | AVFMT_TS_NEGATIVE,
|
|
.init = dash_init,
|
|
.write_header = dash_write_header,
|
|
.write_packet = dash_write_packet,
|
|
.write_trailer = dash_write_trailer,
|
|
.deinit = dash_free,
|
|
.check_bitstream = dash_check_bitstream,
|
|
.priv_class = &dash_class,
|
|
};
|