From 22e28216336da876e1fd17f380ce42eaf1446769 Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Mon, 17 Feb 2014 13:36:38 +0000 Subject: chasing indexing error --- ffmpeg/libavformat/segment.c | 849 ------------------------------------------- 1 file changed, 849 deletions(-) delete mode 100644 ffmpeg/libavformat/segment.c (limited to 'ffmpeg/libavformat/segment.c') diff --git a/ffmpeg/libavformat/segment.c b/ffmpeg/libavformat/segment.c deleted file mode 100644 index 91c1432..0000000 --- a/ffmpeg/libavformat/segment.c +++ /dev/null @@ -1,849 +0,0 @@ -/* - * Copyright (c) 2011, Luca Barbato - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -/** - * @file generic segmenter - * M3U8 specification can be find here: - * @url{http://tools.ietf.org/id/draft-pantos-http-live-streaming} - */ - -/* #define DEBUG */ - -#include - -#include "avformat.h" -#include "internal.h" - -#include "libavutil/avassert.h" -#include "libavutil/log.h" -#include "libavutil/opt.h" -#include "libavutil/avstring.h" -#include "libavutil/parseutils.h" -#include "libavutil/mathematics.h" -#include "libavutil/timestamp.h" - -typedef struct SegmentListEntry { - int index; - double start_time, end_time; - int64_t start_pts; - int64_t offset_pts; - char *filename; - struct SegmentListEntry *next; -} SegmentListEntry; - -typedef enum { - LIST_TYPE_UNDEFINED = -1, - LIST_TYPE_FLAT = 0, - LIST_TYPE_CSV, - LIST_TYPE_M3U8, - LIST_TYPE_EXT, ///< deprecated - LIST_TYPE_FFCONCAT, - LIST_TYPE_NB, -} ListType; - -#define SEGMENT_LIST_FLAG_CACHE 1 -#define SEGMENT_LIST_FLAG_LIVE 2 - -typedef struct { - const AVClass *class; /**< Class for private options. */ - int segment_idx; ///< index of the segment file to write, starting from 0 - int segment_idx_wrap; ///< number after which the index wraps - int segment_count; ///< number of segment files already written - AVOutputFormat *oformat; - AVFormatContext *avf; - char *format; ///< format to use for output segment files - char *list; ///< filename for the segment list file - int list_flags; ///< flags affecting list generation - int list_size; ///< number of entries for the segment list file - char *list_entry_prefix; ///< prefix to add to list entry filenames - ListType list_type; ///< set the list type - AVIOContext *list_pb; ///< list file put-byte context - char *time_str; ///< segment duration specification string - int64_t time; ///< segment duration - - char *times_str; ///< segment times specification string - int64_t *times; ///< list of segment interval specification - int nb_times; ///< number of elments in the times array - - char *frames_str; ///< segment frame numbers specification string - int *frames; ///< list of frame number specification - int nb_frames; ///< number of elments in the frames array - int frame_count; - - int64_t time_delta; - int individual_header_trailer; /**< Set by a private option. */ - int write_header_trailer; /**< Set by a private option. */ - - int reset_timestamps; ///< reset timestamps at the begin of each segment - int64_t initial_offset; ///< initial timestamps offset, expressed in microseconds - char *reference_stream_specifier; ///< reference stream specifier - int reference_stream_index; - - SegmentListEntry cur_entry; - SegmentListEntry *segment_list_entries; - SegmentListEntry *segment_list_entries_end; - - int is_first_pkt; ///< tells if it is the first packet in the segment -} SegmentContext; - -static void print_csv_escaped_str(AVIOContext *ctx, const char *str) -{ - int needs_quoting = !!str[strcspn(str, "\",\n\r")]; - - if (needs_quoting) - avio_w8(ctx, '"'); - - for (; *str; str++) { - if (*str == '"') - avio_w8(ctx, '"'); - avio_w8(ctx, *str); - } - if (needs_quoting) - avio_w8(ctx, '"'); -} - -static int segment_mux_init(AVFormatContext *s) -{ - SegmentContext *seg = s->priv_data; - AVFormatContext *oc; - int i; - - seg->avf = oc = avformat_alloc_context(); - if (!oc) - return AVERROR(ENOMEM); - - oc->oformat = seg->oformat; - oc->interrupt_callback = s->interrupt_callback; - av_dict_copy(&oc->metadata, s->metadata, 0); - - for (i = 0; i < s->nb_streams; i++) { - AVStream *st; - AVCodecContext *icodec, *ocodec; - - if (!(st = avformat_new_stream(oc, NULL))) - return AVERROR(ENOMEM); - icodec = s->streams[i]->codec; - ocodec = st->codec; - avcodec_copy_context(ocodec, icodec); - if (!oc->oformat->codec_tag || - av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == ocodec->codec_id || - av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0) { - ocodec->codec_tag = icodec->codec_tag; - } else { - ocodec->codec_tag = 0; - } - st->sample_aspect_ratio = s->streams[i]->sample_aspect_ratio; - } - - return 0; -} - -static int set_segment_filename(AVFormatContext *s) -{ - SegmentContext *seg = s->priv_data; - AVFormatContext *oc = seg->avf; - size_t size; - - if (seg->segment_idx_wrap) - seg->segment_idx %= seg->segment_idx_wrap; - if (av_get_frame_filename(oc->filename, sizeof(oc->filename), - s->filename, seg->segment_idx) < 0) { - av_log(oc, AV_LOG_ERROR, "Invalid segment filename template '%s'\n", s->filename); - return AVERROR(EINVAL); - } - - /* copy modified name in list entry */ - size = strlen(av_basename(oc->filename)) + 1; - if (seg->list_entry_prefix) - size += strlen(seg->list_entry_prefix); - - seg->cur_entry.filename = av_mallocz(size); - if (!seg->cur_entry.filename) - return AVERROR(ENOMEM); - snprintf(seg->cur_entry.filename, size, "%s%s", - seg->list_entry_prefix ? seg->list_entry_prefix : "", - av_basename(oc->filename)); - - return 0; -} - -static int segment_start(AVFormatContext *s, int write_header) -{ - SegmentContext *seg = s->priv_data; - AVFormatContext *oc = seg->avf; - int err = 0; - - if (write_header) { - avformat_free_context(oc); - seg->avf = NULL; - if ((err = segment_mux_init(s)) < 0) - return err; - oc = seg->avf; - } - - seg->segment_idx++; - if ((err = set_segment_filename(s)) < 0) - return err; - - if ((err = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE, - &s->interrupt_callback, NULL)) < 0) { - av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", oc->filename); - return err; - } - - if (oc->oformat->priv_class && oc->priv_data) - av_opt_set(oc->priv_data, "resend_headers", "1", 0); /* mpegts specific */ - - if (write_header) { - if ((err = avformat_write_header(oc, NULL)) < 0) - return err; - } - - seg->is_first_pkt = 1; - return 0; -} - -static int segment_list_open(AVFormatContext *s) -{ - SegmentContext *seg = s->priv_data; - int ret; - - ret = avio_open2(&seg->list_pb, seg->list, AVIO_FLAG_WRITE, - &s->interrupt_callback, NULL); - if (ret < 0) { - av_log(s, AV_LOG_ERROR, "Failed to open segment list '%s'\n", seg->list); - return ret; - } - - if (seg->list_type == LIST_TYPE_M3U8 && seg->segment_list_entries) { - SegmentListEntry *entry; - double max_duration = 0; - - avio_printf(seg->list_pb, "#EXTM3U\n"); - avio_printf(seg->list_pb, "#EXT-X-VERSION:3\n"); - avio_printf(seg->list_pb, "#EXT-X-MEDIA-SEQUENCE:%d\n", seg->segment_list_entries->index); - avio_printf(seg->list_pb, "#EXT-X-ALLOW-CACHE:%s\n", - seg->list_flags & SEGMENT_LIST_FLAG_CACHE ? "YES" : "NO"); - - for (entry = seg->segment_list_entries; entry; entry = entry->next) - max_duration = FFMAX(max_duration, entry->end_time - entry->start_time); - avio_printf(seg->list_pb, "#EXT-X-TARGETDURATION:%"PRId64"\n", (int64_t)ceil(max_duration)); - } else if (seg->list_type == LIST_TYPE_FFCONCAT) { - avio_printf(seg->list_pb, "ffconcat version 1.0\n"); - } - - return ret; -} - -static void segment_list_print_entry(AVIOContext *list_ioctx, - ListType list_type, - const SegmentListEntry *list_entry, - void *log_ctx) -{ - switch (list_type) { - case LIST_TYPE_FLAT: - avio_printf(list_ioctx, "%s\n", list_entry->filename); - break; - case LIST_TYPE_CSV: - case LIST_TYPE_EXT: - print_csv_escaped_str(list_ioctx, list_entry->filename); - avio_printf(list_ioctx, ",%f,%f\n", list_entry->start_time, list_entry->end_time); - break; - case LIST_TYPE_M3U8: - avio_printf(list_ioctx, "#EXTINF:%f,\n%s\n", - list_entry->end_time - list_entry->start_time, list_entry->filename); - break; - case LIST_TYPE_FFCONCAT: - { - char *buf; - if (av_escape(&buf, list_entry->filename, NULL, AV_ESCAPE_MODE_AUTO, AV_ESCAPE_FLAG_WHITESPACE) < 0) { - av_log(log_ctx, AV_LOG_WARNING, - "Error writing list entry '%s' in list file\n", list_entry->filename); - return; - } - avio_printf(list_ioctx, "file %s\n", buf); - av_free(buf); - break; - } - default: - av_assert0(!"Invalid list type"); - } -} - -static int segment_end(AVFormatContext *s, int write_trailer, int is_last) -{ - SegmentContext *seg = s->priv_data; - AVFormatContext *oc = seg->avf; - int ret = 0; - - av_write_frame(oc, NULL); /* Flush any buffered data (fragmented mp4) */ - if (write_trailer) - ret = av_write_trailer(oc); - - if (ret < 0) - av_log(s, AV_LOG_ERROR, "Failure occurred when ending segment '%s'\n", - oc->filename); - - if (seg->list) { - if (seg->list_size || seg->list_type == LIST_TYPE_M3U8) { - SegmentListEntry *entry = av_mallocz(sizeof(*entry)); - if (!entry) { - ret = AVERROR(ENOMEM); - goto end; - } - - /* append new element */ - memcpy(entry, &seg->cur_entry, sizeof(*entry)); - if (!seg->segment_list_entries) - seg->segment_list_entries = seg->segment_list_entries_end = entry; - else - seg->segment_list_entries_end->next = entry; - seg->segment_list_entries_end = entry; - - /* drop first item */ - if (seg->list_size && seg->segment_count > seg->list_size) { - entry = seg->segment_list_entries; - seg->segment_list_entries = seg->segment_list_entries->next; - av_free(entry->filename); - av_freep(&entry); - } - - avio_close(seg->list_pb); - if ((ret = segment_list_open(s)) < 0) - goto end; - for (entry = seg->segment_list_entries; entry; entry = entry->next) - segment_list_print_entry(seg->list_pb, seg->list_type, entry, s); - if (seg->list_type == LIST_TYPE_M3U8 && is_last) - avio_printf(seg->list_pb, "#EXT-X-ENDLIST\n"); - } else { - segment_list_print_entry(seg->list_pb, seg->list_type, &seg->cur_entry, s); - } - avio_flush(seg->list_pb); - } - - av_log(s, AV_LOG_VERBOSE, "segment:'%s' count:%d ended\n", - seg->avf->filename, seg->segment_count); - seg->segment_count++; - -end: - avio_close(oc->pb); - - return ret; -} - -static int parse_times(void *log_ctx, int64_t **times, int *nb_times, - const char *times_str) -{ - char *p; - int i, ret = 0; - char *times_str1 = av_strdup(times_str); - char *saveptr = NULL; - - if (!times_str1) - return AVERROR(ENOMEM); - -#define FAIL(err) ret = err; goto end - - *nb_times = 1; - for (p = times_str1; *p; p++) - if (*p == ',') - (*nb_times)++; - - *times = av_malloc(sizeof(**times) * *nb_times); - if (!*times) { - av_log(log_ctx, AV_LOG_ERROR, "Could not allocate forced times array\n"); - FAIL(AVERROR(ENOMEM)); - } - - p = times_str1; - for (i = 0; i < *nb_times; i++) { - int64_t t; - char *tstr = av_strtok(p, ",", &saveptr); - p = NULL; - - if (!tstr || !tstr[0]) { - av_log(log_ctx, AV_LOG_ERROR, "Empty time specification in times list %s\n", - times_str); - FAIL(AVERROR(EINVAL)); - } - - ret = av_parse_time(&t, tstr, 1); - if (ret < 0) { - av_log(log_ctx, AV_LOG_ERROR, - "Invalid time duration specification '%s' in times list %s\n", tstr, times_str); - FAIL(AVERROR(EINVAL)); - } - (*times)[i] = t; - - /* check on monotonicity */ - if (i && (*times)[i-1] > (*times)[i]) { - av_log(log_ctx, AV_LOG_ERROR, - "Specified time %f is greater than the following time %f\n", - (float)((*times)[i])/1000000, (float)((*times)[i-1])/1000000); - FAIL(AVERROR(EINVAL)); - } - } - -end: - av_free(times_str1); - return ret; -} - -static int parse_frames(void *log_ctx, int **frames, int *nb_frames, - const char *frames_str) -{ - char *p; - int i, ret = 0; - char *frames_str1 = av_strdup(frames_str); - char *saveptr = NULL; - - if (!frames_str1) - return AVERROR(ENOMEM); - -#define FAIL(err) ret = err; goto end - - *nb_frames = 1; - for (p = frames_str1; *p; p++) - if (*p == ',') - (*nb_frames)++; - - *frames = av_malloc(sizeof(**frames) * *nb_frames); - if (!*frames) { - av_log(log_ctx, AV_LOG_ERROR, "Could not allocate forced frames array\n"); - FAIL(AVERROR(ENOMEM)); - } - - p = frames_str1; - for (i = 0; i < *nb_frames; i++) { - long int f; - char *tailptr; - char *fstr = av_strtok(p, ",", &saveptr); - - p = NULL; - if (!fstr) { - av_log(log_ctx, AV_LOG_ERROR, "Empty frame specification in frame list %s\n", - frames_str); - FAIL(AVERROR(EINVAL)); - } - f = strtol(fstr, &tailptr, 10); - if (*tailptr || f <= 0 || f >= INT_MAX) { - av_log(log_ctx, AV_LOG_ERROR, - "Invalid argument '%s', must be a positive integer <= INT64_MAX\n", - fstr); - FAIL(AVERROR(EINVAL)); - } - (*frames)[i] = f; - - /* check on monotonicity */ - if (i && (*frames)[i-1] > (*frames)[i]) { - av_log(log_ctx, AV_LOG_ERROR, - "Specified frame %d is greater than the following frame %d\n", - (*frames)[i], (*frames)[i-1]); - FAIL(AVERROR(EINVAL)); - } - } - -end: - av_free(frames_str1); - return ret; -} - -static int open_null_ctx(AVIOContext **ctx) -{ - int buf_size = 32768; - uint8_t *buf = av_malloc(buf_size); - if (!buf) - return AVERROR(ENOMEM); - *ctx = avio_alloc_context(buf, buf_size, AVIO_FLAG_WRITE, NULL, NULL, NULL, NULL); - if (!*ctx) { - av_free(buf); - return AVERROR(ENOMEM); - } - return 0; -} - -static void close_null_ctx(AVIOContext *pb) -{ - av_free(pb->buffer); - av_free(pb); -} - -static int select_reference_stream(AVFormatContext *s) -{ - SegmentContext *seg = s->priv_data; - int ret, i; - - seg->reference_stream_index = -1; - if (!strcmp(seg->reference_stream_specifier, "auto")) { - /* select first index of type with highest priority */ - int type_index_map[AVMEDIA_TYPE_NB]; - static const enum AVMediaType type_priority_list[] = { - AVMEDIA_TYPE_VIDEO, - AVMEDIA_TYPE_AUDIO, - AVMEDIA_TYPE_SUBTITLE, - AVMEDIA_TYPE_DATA, - AVMEDIA_TYPE_ATTACHMENT - }; - enum AVMediaType type; - - for (i = 0; i < AVMEDIA_TYPE_NB; i++) - type_index_map[i] = -1; - - /* select first index for each type */ - for (i = 0; i < s->nb_streams; i++) { - type = s->streams[i]->codec->codec_type; - if ((unsigned)type < AVMEDIA_TYPE_NB && type_index_map[type] == -1 - /* ignore attached pictures/cover art streams */ - && !(s->streams[i]->disposition & AV_DISPOSITION_ATTACHED_PIC)) - type_index_map[type] = i; - } - - for (i = 0; i < FF_ARRAY_ELEMS(type_priority_list); i++) { - type = type_priority_list[i]; - if ((seg->reference_stream_index = type_index_map[type]) >= 0) - break; - } - } else { - for (i = 0; i < s->nb_streams; i++) { - ret = avformat_match_stream_specifier(s, s->streams[i], - seg->reference_stream_specifier); - if (ret < 0) - return ret; - if (ret > 0) { - seg->reference_stream_index = i; - break; - } - } - } - - if (seg->reference_stream_index < 0) { - av_log(s, AV_LOG_ERROR, "Could not select stream matching identifier '%s'\n", - seg->reference_stream_specifier); - return AVERROR(EINVAL); - } - - return 0; -} - -static int seg_write_header(AVFormatContext *s) -{ - SegmentContext *seg = s->priv_data; - AVFormatContext *oc = NULL; - int ret; - - seg->segment_count = 0; - if (!seg->write_header_trailer) - seg->individual_header_trailer = 0; - - if (!!seg->time_str + !!seg->times_str + !!seg->frames_str > 1) { - av_log(s, AV_LOG_ERROR, - "segment_time, segment_times, and segment_frames options " - "are mutually exclusive, select just one of them\n"); - return AVERROR(EINVAL); - } - - if (seg->times_str) { - if ((ret = parse_times(s, &seg->times, &seg->nb_times, seg->times_str)) < 0) - return ret; - } else if (seg->frames_str) { - if ((ret = parse_frames(s, &seg->frames, &seg->nb_frames, seg->frames_str)) < 0) - return ret; - } else { - /* set default value if not specified */ - if (!seg->time_str) - seg->time_str = av_strdup("2"); - if ((ret = av_parse_time(&seg->time, seg->time_str, 1)) < 0) { - av_log(s, AV_LOG_ERROR, - "Invalid time duration specification '%s' for segment_time option\n", - seg->time_str); - return ret; - } - } - - if (seg->list) { - if (seg->list_type == LIST_TYPE_UNDEFINED) { - if (av_match_ext(seg->list, "csv" )) seg->list_type = LIST_TYPE_CSV; - else if (av_match_ext(seg->list, "ext" )) seg->list_type = LIST_TYPE_EXT; - else if (av_match_ext(seg->list, "m3u8")) seg->list_type = LIST_TYPE_M3U8; - else if (av_match_ext(seg->list, "ffcat,ffconcat")) seg->list_type = LIST_TYPE_FFCONCAT; - else seg->list_type = LIST_TYPE_FLAT; - } - if ((ret = segment_list_open(s)) < 0) - goto fail; - } - if (seg->list_type == LIST_TYPE_EXT) - av_log(s, AV_LOG_WARNING, "'ext' list type option is deprecated in favor of 'csv'\n"); - - if ((ret = select_reference_stream(s)) < 0) - goto fail; - av_log(s, AV_LOG_VERBOSE, "Selected stream id:%d type:%s\n", - seg->reference_stream_index, - av_get_media_type_string(s->streams[seg->reference_stream_index]->codec->codec_type)); - - seg->oformat = av_guess_format(seg->format, s->filename, NULL); - - if (!seg->oformat) { - ret = AVERROR_MUXER_NOT_FOUND; - goto fail; - } - if (seg->oformat->flags & AVFMT_NOFILE) { - av_log(s, AV_LOG_ERROR, "format %s not supported.\n", - seg->oformat->name); - ret = AVERROR(EINVAL); - goto fail; - } - - if ((ret = segment_mux_init(s)) < 0) - goto fail; - oc = seg->avf; - - if ((ret = set_segment_filename(s)) < 0) - goto fail; - - if (seg->write_header_trailer) { - if ((ret = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE, - &s->interrupt_callback, NULL)) < 0) { - av_log(s, AV_LOG_ERROR, "Failed to open segment '%s'\n", oc->filename); - goto fail; - } - } else { - if ((ret = open_null_ctx(&oc->pb)) < 0) - goto fail; - } - - if ((ret = avformat_write_header(oc, NULL)) < 0) { - avio_close(oc->pb); - goto fail; - } - seg->is_first_pkt = 1; - - if (oc->avoid_negative_ts > 0 && s->avoid_negative_ts < 0) - s->avoid_negative_ts = 1; - - if (!seg->write_header_trailer) { - close_null_ctx(oc->pb); - if ((ret = avio_open2(&oc->pb, oc->filename, AVIO_FLAG_WRITE, - &s->interrupt_callback, NULL)) < 0) - goto fail; - } - -fail: - if (ret) { - if (seg->list) - avio_close(seg->list_pb); - if (seg->avf) - avformat_free_context(seg->avf); - } - return ret; -} - -static int seg_write_packet(AVFormatContext *s, AVPacket *pkt) -{ - SegmentContext *seg = s->priv_data; - AVFormatContext *oc = seg->avf; - AVStream *st = s->streams[pkt->stream_index]; - int64_t end_pts = INT64_MAX, offset; - int start_frame = INT_MAX; - int ret; - - if (seg->times) { - end_pts = seg->segment_count < seg->nb_times ? - seg->times[seg->segment_count] : INT64_MAX; - } else if (seg->frames) { - start_frame = seg->segment_count <= seg->nb_frames ? - seg->frames[seg->segment_count] : INT_MAX; - } else { - end_pts = seg->time * (seg->segment_count+1); - } - - av_dlog(s, "packet stream:%d pts:%s pts_time:%s is_key:%d frame:%d\n", - pkt->stream_index, av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), - pkt->flags & AV_PKT_FLAG_KEY, - pkt->stream_index == seg->reference_stream_index ? seg->frame_count : -1); - - if (pkt->stream_index == seg->reference_stream_index && - pkt->flags & AV_PKT_FLAG_KEY && - (seg->frame_count >= start_frame || - (pkt->pts != AV_NOPTS_VALUE && - av_compare_ts(pkt->pts, st->time_base, - end_pts-seg->time_delta, AV_TIME_BASE_Q) >= 0))) { - if ((ret = segment_end(s, seg->individual_header_trailer, 0)) < 0) - goto fail; - - if ((ret = segment_start(s, seg->individual_header_trailer)) < 0) - goto fail; - - oc = seg->avf; - - seg->cur_entry.index = seg->segment_idx; - seg->cur_entry.start_time = (double)pkt->pts * av_q2d(st->time_base); - seg->cur_entry.start_pts = av_rescale_q(pkt->pts, st->time_base, AV_TIME_BASE_Q); - } else if (pkt->pts != AV_NOPTS_VALUE) { - seg->cur_entry.end_time = - FFMAX(seg->cur_entry.end_time, (double)(pkt->pts + pkt->duration) * av_q2d(st->time_base)); - } - - if (seg->is_first_pkt) { - av_log(s, AV_LOG_VERBOSE, "segment:'%s' starts with packet stream:%d pts:%s pts_time:%s frame:%d\n", - seg->avf->filename, pkt->stream_index, - av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), seg->frame_count); - seg->is_first_pkt = 0; - } - - av_log(s, AV_LOG_DEBUG, "stream:%d start_pts_time:%s pts:%s pts_time:%s dts:%s dts_time:%s", - pkt->stream_index, - av_ts2timestr(seg->cur_entry.start_pts, &AV_TIME_BASE_Q), - av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), - av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &st->time_base)); - - /* compute new timestamps */ - offset = av_rescale_q(seg->initial_offset - (seg->reset_timestamps ? seg->cur_entry.start_pts : 0), - AV_TIME_BASE_Q, st->time_base); - if (pkt->pts != AV_NOPTS_VALUE) - pkt->pts += offset; - if (pkt->dts != AV_NOPTS_VALUE) - pkt->dts += offset; - - av_log(s, AV_LOG_DEBUG, " -> pts:%s pts_time:%s dts:%s dts_time:%s\n", - av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), - av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &st->time_base)); - - ret = ff_write_chained(oc, pkt->stream_index, pkt, s); - -fail: - if (pkt->stream_index == seg->reference_stream_index) - seg->frame_count++; - - if (ret < 0) { - if (seg->list) - avio_close(seg->list_pb); - avformat_free_context(oc); - } - - return ret; -} - -static int seg_write_trailer(struct AVFormatContext *s) -{ - SegmentContext *seg = s->priv_data; - AVFormatContext *oc = seg->avf; - SegmentListEntry *cur, *next; - - int ret; - if (!seg->write_header_trailer) { - if ((ret = segment_end(s, 0, 1)) < 0) - goto fail; - open_null_ctx(&oc->pb); - ret = av_write_trailer(oc); - close_null_ctx(oc->pb); - } else { - ret = segment_end(s, 1, 1); - } -fail: - if (seg->list) - avio_close(seg->list_pb); - - av_opt_free(seg); - av_freep(&seg->times); - av_freep(&seg->frames); - - cur = seg->segment_list_entries; - while (cur) { - next = cur->next; - av_free(cur->filename); - av_free(cur); - cur = next; - } - - avformat_free_context(oc); - return ret; -} - -#define OFFSET(x) offsetof(SegmentContext, x) -#define E AV_OPT_FLAG_ENCODING_PARAM -static const AVOption options[] = { - { "reference_stream", "set reference stream", OFFSET(reference_stream_specifier), AV_OPT_TYPE_STRING, {.str = "auto"}, CHAR_MIN, CHAR_MAX, E }, - { "segment_format", "set container format used for the segments", OFFSET(format), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, - { "segment_list", "set the segment list filename", OFFSET(list), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, - - { "segment_list_flags","set flags affecting segment list generation", OFFSET(list_flags), AV_OPT_TYPE_FLAGS, {.i64 = SEGMENT_LIST_FLAG_CACHE }, 0, UINT_MAX, E, "list_flags"}, - { "cache", "allow list caching", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_LIST_FLAG_CACHE }, INT_MIN, INT_MAX, E, "list_flags"}, - { "live", "enable live-friendly list generation (useful for HLS)", 0, AV_OPT_TYPE_CONST, {.i64 = SEGMENT_LIST_FLAG_LIVE }, INT_MIN, INT_MAX, E, "list_flags"}, - - { "segment_list_size", "set the maximum number of playlist entries", OFFSET(list_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, - { "segment_list_entry_prefix", "set prefix to prepend to each list entry filename", OFFSET(list_entry_prefix), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, - - { "segment_list_type", "set the segment list type", OFFSET(list_type), AV_OPT_TYPE_INT, {.i64 = LIST_TYPE_UNDEFINED}, -1, LIST_TYPE_NB-1, E, "list_type" }, - { "flat", "flat format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_FLAT }, INT_MIN, INT_MAX, E, "list_type" }, - { "csv", "csv format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_CSV }, INT_MIN, INT_MAX, E, "list_type" }, - { "ext", "extended format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_EXT }, INT_MIN, INT_MAX, E, "list_type" }, - { "ffconcat", "ffconcat format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_FFCONCAT }, INT_MIN, INT_MAX, E, "list_type" }, - { "m3u8", "M3U8 format", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_M3U8 }, INT_MIN, INT_MAX, E, "list_type" }, - { "hls", "Apple HTTP Live Streaming compatible", 0, AV_OPT_TYPE_CONST, {.i64=LIST_TYPE_M3U8 }, INT_MIN, INT_MAX, E, "list_type" }, - - { "segment_time", "set segment duration", OFFSET(time_str),AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, E }, - { "segment_time_delta","set approximation value used for the segment times", OFFSET(time_delta), AV_OPT_TYPE_DURATION, {.i64 = 0}, 0, 0, E }, - { "segment_times", "set segment split time points", OFFSET(times_str),AV_OPT_TYPE_STRING,{.str = NULL}, 0, 0, E }, - { "segment_frames", "set segment split frame numbers", OFFSET(frames_str),AV_OPT_TYPE_STRING,{.str = NULL}, 0, 0, E }, - { "segment_wrap", "set number after which the index wraps", OFFSET(segment_idx_wrap), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, - { "segment_start_number", "set the sequence number of the first segment", OFFSET(segment_idx), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, E }, - - { "individual_header_trailer", "write header/trailer to each segment", OFFSET(individual_header_trailer), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, E }, - { "write_header_trailer", "write a header to the first segment and a trailer to the last one", OFFSET(write_header_trailer), AV_OPT_TYPE_INT, {.i64 = 1}, 0, 1, E }, - { "reset_timestamps", "reset timestamps at the begin of each segment", OFFSET(reset_timestamps), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, E }, - { "initial_offset", "set initial timestamp offset", OFFSET(initial_offset), AV_OPT_TYPE_DURATION, {.i64 = 0}, -INT64_MAX, INT64_MAX, E }, - { NULL }, -}; - -static const AVClass seg_class = { - .class_name = "segment muxer", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVOutputFormat ff_segment_muxer = { - .name = "segment", - .long_name = NULL_IF_CONFIG_SMALL("segment"), - .priv_data_size = sizeof(SegmentContext), - .flags = AVFMT_NOFILE|AVFMT_GLOBALHEADER, - .write_header = seg_write_header, - .write_packet = seg_write_packet, - .write_trailer = seg_write_trailer, - .priv_class = &seg_class, -}; - -static const AVClass sseg_class = { - .class_name = "stream_segment muxer", - .item_name = av_default_item_name, - .option = options, - .version = LIBAVUTIL_VERSION_INT, -}; - -AVOutputFormat ff_stream_segment_muxer = { - .name = "stream_segment,ssegment", - .long_name = NULL_IF_CONFIG_SMALL("streaming segment muxer"), - .priv_data_size = sizeof(SegmentContext), - .flags = AVFMT_NOFILE, - .write_header = seg_write_header, - .write_packet = seg_write_packet, - .write_trailer = seg_write_trailer, - .priv_class = &sseg_class, -}; 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