| /* | |
| * Copyright (c) 2012 Nicolas George | |
| * | |
| * 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 | |
| */ | |
| #include "libavutil/avstring.h" | |
| #include "libavutil/avassert.h" | |
| #include "libavutil/bprint.h" | |
| #include "libavutil/intreadwrite.h" | |
| #include "libavutil/opt.h" | |
| #include "libavutil/parseutils.h" | |
| #include "libavutil/timestamp.h" | |
| #include "libavcodec/codec_desc.h" | |
| #include "libavcodec/bsf.h" | |
| #include "avformat.h" | |
| #include "avio_internal.h" | |
| #include "demux.h" | |
| #include "internal.h" | |
| #include "url.h" | |
| typedef enum ConcatMatchMode { | |
| MATCH_ONE_TO_ONE, | |
| MATCH_EXACT_ID, | |
| } ConcatMatchMode; | |
| typedef struct ConcatStream { | |
| AVBSFContext *bsf; | |
| int out_stream_index; | |
| } ConcatStream; | |
| typedef struct { | |
| char *url; | |
| int64_t start_time; | |
| int64_t file_start_time; | |
| int64_t file_inpoint; | |
| int64_t duration; | |
| int64_t user_duration; | |
| int64_t next_dts; | |
| ConcatStream *streams; | |
| int64_t inpoint; | |
| int64_t outpoint; | |
| AVDictionary *metadata; | |
| AVDictionary *options; | |
| int nb_streams; | |
| } ConcatFile; | |
| typedef struct { | |
| AVClass *class; | |
| ConcatFile *files; | |
| ConcatFile *cur_file; | |
| unsigned nb_files; | |
| AVFormatContext *avf; | |
| int safe; | |
| int seekable; | |
| int eof; | |
| ConcatMatchMode stream_match_mode; | |
| unsigned auto_convert; | |
| int segment_time_metadata; | |
| } ConcatContext; | |
| static int concat_probe(const AVProbeData *probe) | |
| { | |
| return memcmp(probe->buf, "ffconcat version 1.0", 20) ? | |
| 0 : AVPROBE_SCORE_MAX; | |
| } | |
| static char *get_keyword(uint8_t **cursor) | |
| { | |
| char *ret = *cursor += strspn(*cursor, SPACE_CHARS); | |
| *cursor += strcspn(*cursor, SPACE_CHARS); | |
| if (**cursor) { | |
| *((*cursor)++) = 0; | |
| *cursor += strspn(*cursor, SPACE_CHARS); | |
| } | |
| return ret; | |
| } | |
| static int safe_filename(const char *f) | |
| { | |
| const char *start = f; | |
| for (; *f; f++) { | |
| /* A-Za-z0-9_- */ | |
| if (!((unsigned)((*f | 32) - 'a') < 26 || | |
| (unsigned)(*f - '0') < 10 || *f == '_' || *f == '-')) { | |
| if (f == start) | |
| return 0; | |
| else if (*f == '/') | |
| start = f + 1; | |
| else if (*f != '.') | |
| return 0; | |
| } | |
| } | |
| return 1; | |
| } | |
| #define FAIL(retcode) do { ret = (retcode); goto fail; } while(0) | |
| static int add_file(AVFormatContext *avf, char *filename, ConcatFile **rfile, | |
| unsigned *nb_files_alloc) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| ConcatFile *file; | |
| char *url = NULL; | |
| const char *proto; | |
| const char *ptr; | |
| size_t url_len; | |
| int ret; | |
| if (cat->safe && !safe_filename(filename)) { | |
| av_log(avf, AV_LOG_ERROR, "Unsafe file name '%s'\n", filename); | |
| FAIL(AVERROR(EPERM)); | |
| } | |
| proto = avio_find_protocol_name(filename); | |
| if (proto && av_strstart(filename, proto, &ptr) && | |
| (*ptr == ':' || *ptr == ',')) { | |
| url = filename; | |
| filename = NULL; | |
| } else { | |
| url_len = strlen(avf->url) + strlen(filename) + 16; | |
| if (!(url = av_malloc(url_len))) | |
| FAIL(AVERROR(ENOMEM)); | |
| ff_make_absolute_url(url, url_len, avf->url, filename); | |
| av_freep(&filename); | |
| } | |
| if (cat->nb_files >= *nb_files_alloc) { | |
| size_t n = FFMAX(*nb_files_alloc * 2, 16); | |
| ConcatFile *new_files; | |
| if (n <= cat->nb_files || n > SIZE_MAX / sizeof(*cat->files) || | |
| !(new_files = av_realloc(cat->files, n * sizeof(*cat->files)))) | |
| FAIL(AVERROR(ENOMEM)); | |
| cat->files = new_files; | |
| *nb_files_alloc = n; | |
| } | |
| file = &cat->files[cat->nb_files++]; | |
| memset(file, 0, sizeof(*file)); | |
| *rfile = file; | |
| file->url = url; | |
| file->start_time = AV_NOPTS_VALUE; | |
| file->duration = AV_NOPTS_VALUE; | |
| file->next_dts = AV_NOPTS_VALUE; | |
| file->inpoint = AV_NOPTS_VALUE; | |
| file->outpoint = AV_NOPTS_VALUE; | |
| file->user_duration = AV_NOPTS_VALUE; | |
| return 0; | |
| fail: | |
| av_free(url); | |
| av_free(filename); | |
| return ret; | |
| } | |
| static int copy_stream_props(AVStream *st, AVStream *source_st) | |
| { | |
| int ret; | |
| if (st->codecpar->codec_id || !source_st->codecpar->codec_id) { | |
| if (st->codecpar->extradata_size < source_st->codecpar->extradata_size) { | |
| ret = ff_alloc_extradata(st->codecpar, | |
| source_st->codecpar->extradata_size); | |
| if (ret < 0) | |
| return ret; | |
| } | |
| if (source_st->codecpar->extradata_size) | |
| memcpy(st->codecpar->extradata, source_st->codecpar->extradata, | |
| source_st->codecpar->extradata_size); | |
| return 0; | |
| } | |
| if ((ret = avcodec_parameters_copy(st->codecpar, source_st->codecpar)) < 0) | |
| return ret; | |
| st->r_frame_rate = source_st->r_frame_rate; | |
| st->avg_frame_rate = source_st->avg_frame_rate; | |
| st->sample_aspect_ratio = source_st->sample_aspect_ratio; | |
| avpriv_set_pts_info(st, 64, source_st->time_base.num, source_st->time_base.den); | |
| av_dict_copy(&st->metadata, source_st->metadata, 0); | |
| return 0; | |
| } | |
| static int detect_stream_specific(AVFormatContext *avf, int idx) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| AVStream *st = cat->avf->streams[idx]; | |
| ConcatStream *cs = &cat->cur_file->streams[idx]; | |
| const AVBitStreamFilter *filter; | |
| AVBSFContext *bsf; | |
| int ret; | |
| if (cat->auto_convert && st->codecpar->codec_id == AV_CODEC_ID_H264) { | |
| if (!st->codecpar->extradata_size || | |
| (st->codecpar->extradata_size >= 3 && AV_RB24(st->codecpar->extradata) == 1) || | |
| (st->codecpar->extradata_size >= 4 && AV_RB32(st->codecpar->extradata) == 1)) | |
| return 0; | |
| av_log(cat->avf, AV_LOG_INFO, | |
| "Auto-inserting h264_mp4toannexb bitstream filter\n"); | |
| filter = av_bsf_get_by_name("h264_mp4toannexb"); | |
| if (!filter) { | |
| av_log(avf, AV_LOG_ERROR, "h264_mp4toannexb bitstream filter " | |
| "required for H.264 streams\n"); | |
| return AVERROR_BSF_NOT_FOUND; | |
| } | |
| ret = av_bsf_alloc(filter, &bsf); | |
| if (ret < 0) | |
| return ret; | |
| cs->bsf = bsf; | |
| ret = avcodec_parameters_copy(bsf->par_in, st->codecpar); | |
| if (ret < 0) | |
| return ret; | |
| ret = av_bsf_init(bsf); | |
| if (ret < 0) | |
| return ret; | |
| ret = avcodec_parameters_copy(st->codecpar, bsf->par_out); | |
| if (ret < 0) | |
| return ret; | |
| } | |
| return 0; | |
| } | |
| static int match_streams_one_to_one(AVFormatContext *avf) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| AVStream *st; | |
| int i, ret; | |
| for (i = cat->cur_file->nb_streams; i < cat->avf->nb_streams; i++) { | |
| if (i < avf->nb_streams) { | |
| st = avf->streams[i]; | |
| } else { | |
| if (!(st = avformat_new_stream(avf, NULL))) | |
| return AVERROR(ENOMEM); | |
| } | |
| if ((ret = copy_stream_props(st, cat->avf->streams[i])) < 0) | |
| return ret; | |
| cat->cur_file->streams[i].out_stream_index = i; | |
| } | |
| return 0; | |
| } | |
| static int match_streams_exact_id(AVFormatContext *avf) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| AVStream *st; | |
| int i, j, ret; | |
| for (i = cat->cur_file->nb_streams; i < cat->avf->nb_streams; i++) { | |
| st = cat->avf->streams[i]; | |
| for (j = 0; j < avf->nb_streams; j++) { | |
| if (avf->streams[j]->id == st->id) { | |
| av_log(avf, AV_LOG_VERBOSE, | |
| "Match slave stream #%d with stream #%d id 0x%x\n", | |
| i, j, st->id); | |
| if ((ret = copy_stream_props(avf->streams[j], st)) < 0) | |
| return ret; | |
| cat->cur_file->streams[i].out_stream_index = j; | |
| } | |
| } | |
| } | |
| return 0; | |
| } | |
| static int match_streams(AVFormatContext *avf) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| ConcatStream *map; | |
| int i, ret; | |
| if (cat->cur_file->nb_streams >= cat->avf->nb_streams) | |
| return 0; | |
| map = av_realloc(cat->cur_file->streams, | |
| cat->avf->nb_streams * sizeof(*map)); | |
| if (!map) | |
| return AVERROR(ENOMEM); | |
| cat->cur_file->streams = map; | |
| memset(map + cat->cur_file->nb_streams, 0, | |
| (cat->avf->nb_streams - cat->cur_file->nb_streams) * sizeof(*map)); | |
| for (i = cat->cur_file->nb_streams; i < cat->avf->nb_streams; i++) { | |
| map[i].out_stream_index = -1; | |
| if ((ret = detect_stream_specific(avf, i)) < 0) | |
| return ret; | |
| } | |
| switch (cat->stream_match_mode) { | |
| case MATCH_ONE_TO_ONE: | |
| ret = match_streams_one_to_one(avf); | |
| break; | |
| case MATCH_EXACT_ID: | |
| ret = match_streams_exact_id(avf); | |
| break; | |
| default: | |
| ret = AVERROR_BUG; | |
| } | |
| if (ret < 0) | |
| return ret; | |
| cat->cur_file->nb_streams = cat->avf->nb_streams; | |
| return 0; | |
| } | |
| static int64_t get_best_effort_duration(ConcatFile *file, AVFormatContext *avf) | |
| { | |
| if (file->user_duration != AV_NOPTS_VALUE) | |
| return file->user_duration; | |
| if (file->outpoint != AV_NOPTS_VALUE) | |
| return av_sat_sub64(file->outpoint, file->file_inpoint); | |
| if (avf->duration > 0) | |
| return av_sat_sub64(avf->duration, file->file_inpoint - file->file_start_time); | |
| if (file->next_dts != AV_NOPTS_VALUE) | |
| return file->next_dts - file->file_inpoint; | |
| return AV_NOPTS_VALUE; | |
| } | |
| static int open_file(AVFormatContext *avf, unsigned fileno) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| ConcatFile *file = &cat->files[fileno]; | |
| AVDictionary *options = NULL; | |
| int ret; | |
| if (cat->avf) | |
| avformat_close_input(&cat->avf); | |
| cat->avf = avformat_alloc_context(); | |
| if (!cat->avf) | |
| return AVERROR(ENOMEM); | |
| cat->avf->flags |= avf->flags & ~AVFMT_FLAG_CUSTOM_IO; | |
| cat->avf->interrupt_callback = avf->interrupt_callback; | |
| if ((ret = ff_copy_whiteblacklists(cat->avf, avf)) < 0) | |
| return ret; | |
| ret = av_dict_copy(&options, file->options, 0); | |
| if (ret < 0) | |
| return ret; | |
| if ((ret = avformat_open_input(&cat->avf, file->url, NULL, &options)) < 0 || | |
| (ret = avformat_find_stream_info(cat->avf, NULL)) < 0) { | |
| av_log(avf, AV_LOG_ERROR, "Impossible to open '%s'\n", file->url); | |
| av_dict_free(&options); | |
| avformat_close_input(&cat->avf); | |
| return ret; | |
| } | |
| if (options) { | |
| av_log(avf, AV_LOG_WARNING, "Unused options for '%s'.\n", file->url); | |
| /* TODO log unused options once we have a proper string API */ | |
| av_dict_free(&options); | |
| } | |
| cat->cur_file = file; | |
| file->start_time = !fileno ? 0 : | |
| cat->files[fileno - 1].start_time + | |
| cat->files[fileno - 1].duration; | |
| file->file_start_time = (cat->avf->start_time == AV_NOPTS_VALUE) ? 0 : cat->avf->start_time; | |
| file->file_inpoint = (file->inpoint == AV_NOPTS_VALUE) ? file->file_start_time : file->inpoint; | |
| file->duration = get_best_effort_duration(file, cat->avf); | |
| if (cat->segment_time_metadata) { | |
| av_dict_set_int(&file->metadata, "lavf.concatdec.start_time", file->start_time, 0); | |
| if (file->duration != AV_NOPTS_VALUE) | |
| av_dict_set_int(&file->metadata, "lavf.concatdec.duration", file->duration, 0); | |
| } | |
| if ((ret = match_streams(avf)) < 0) | |
| return ret; | |
| if (file->inpoint != AV_NOPTS_VALUE) { | |
| if ((ret = avformat_seek_file(cat->avf, -1, INT64_MIN, file->inpoint, file->inpoint, 0)) < 0) | |
| return ret; | |
| } | |
| return 0; | |
| } | |
| static int concat_read_close(AVFormatContext *avf) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| unsigned i, j; | |
| for (i = 0; i < cat->nb_files; i++) { | |
| av_freep(&cat->files[i].url); | |
| for (j = 0; j < cat->files[i].nb_streams; j++) { | |
| if (cat->files[i].streams[j].bsf) | |
| av_bsf_free(&cat->files[i].streams[j].bsf); | |
| } | |
| av_freep(&cat->files[i].streams); | |
| av_dict_free(&cat->files[i].metadata); | |
| av_dict_free(&cat->files[i].options); | |
| } | |
| if (cat->avf) | |
| avformat_close_input(&cat->avf); | |
| av_freep(&cat->files); | |
| return 0; | |
| } | |
| #define MAX_ARGS 3 | |
| #define NEEDS_UNSAFE (1 << 0) | |
| #define NEEDS_FILE (1 << 1) | |
| #define NEEDS_STREAM (1 << 2) | |
| typedef struct ParseSyntax { | |
| const char *keyword; | |
| char args[MAX_ARGS]; | |
| uint8_t flags; | |
| } ParseSyntax; | |
| typedef enum ParseDirective { | |
| DIR_FFCONCAT, | |
| DIR_FILE, | |
| DIR_DURATION, | |
| DIR_INPOINT, | |
| DIR_OUTPOINT, | |
| DIR_FPMETA, | |
| DIR_FPMETAS, | |
| DIR_OPTION, | |
| DIR_STREAM, | |
| DIR_EXSID, | |
| DIR_STMETA, | |
| DIR_STCODEC, | |
| DIR_STEDATA, | |
| DIR_CHAPTER, | |
| } ParseDirective; | |
| static const ParseSyntax syntax[] = { | |
| [DIR_FFCONCAT ] = { "ffconcat", "kk", 0 }, | |
| [DIR_FILE ] = { "file", "s", 0 }, | |
| [DIR_DURATION ] = { "duration", "d", NEEDS_FILE }, | |
| [DIR_INPOINT ] = { "inpoint", "d", NEEDS_FILE }, | |
| [DIR_OUTPOINT ] = { "outpoint", "d", NEEDS_FILE }, | |
| [DIR_FPMETA ] = { "file_packet_meta", "ks", NEEDS_FILE }, | |
| [DIR_FPMETAS ] = { "file_packet_metadata", "s", NEEDS_FILE }, | |
| [DIR_OPTION ] = { "option", "ks", NEEDS_FILE | NEEDS_UNSAFE }, | |
| [DIR_STREAM ] = { "stream", "", 0 }, | |
| [DIR_EXSID ] = { "exact_stream_id", "i", NEEDS_STREAM }, | |
| [DIR_STMETA ] = { "stream_meta", "ks", NEEDS_STREAM }, | |
| [DIR_STCODEC ] = { "stream_codec", "k", NEEDS_STREAM }, | |
| [DIR_STEDATA ] = { "stream_extradata", "k", NEEDS_STREAM }, | |
| [DIR_CHAPTER ] = { "chapter", "idd", 0 }, | |
| }; | |
| static int concat_parse_script(AVFormatContext *avf) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| unsigned nb_files_alloc = 0; | |
| AVBPrint bp; | |
| uint8_t *cursor, *keyword; | |
| ConcatFile *file = NULL; | |
| AVStream *stream = NULL; | |
| AVChapter *chapter = NULL; | |
| unsigned line = 0, arg; | |
| const ParseSyntax *dir; | |
| char *arg_kw[MAX_ARGS]; | |
| char *arg_str[MAX_ARGS] = { 0 }; | |
| int64_t arg_int[MAX_ARGS]; | |
| int ret; | |
| av_bprint_init(&bp, 0, AV_BPRINT_SIZE_UNLIMITED); | |
| while ((ret = ff_read_line_to_bprint_overwrite(avf->pb, &bp)) >= 0) { | |
| line++; | |
| cursor = bp.str; | |
| keyword = get_keyword(&cursor); | |
| if (!*keyword || *keyword == '#') | |
| continue; | |
| for (dir = syntax; dir < syntax + FF_ARRAY_ELEMS(syntax); dir++) | |
| if (!strcmp(dir->keyword, keyword)) | |
| break; | |
| if (dir >= syntax + FF_ARRAY_ELEMS(syntax)) { | |
| av_log(avf, AV_LOG_ERROR, "Line %d: unknown keyword '%s'\n", | |
| line, keyword); | |
| FAIL(AVERROR_INVALIDDATA); | |
| } | |
| /* Flags check */ | |
| if ((dir->flags & NEEDS_UNSAFE) && cat->safe) { | |
| av_log(avf, AV_LOG_ERROR, "Line %d: %s not allowed if safe\n", line, keyword); | |
| FAIL(AVERROR_INVALIDDATA); | |
| } | |
| if ((dir->flags & NEEDS_FILE) && !cat->nb_files) { | |
| av_log(avf, AV_LOG_ERROR, "Line %d: %s without file\n", line, keyword); | |
| FAIL(AVERROR_INVALIDDATA); | |
| } | |
| if ((dir->flags & NEEDS_STREAM) && !avf->nb_streams) { | |
| av_log(avf, AV_LOG_ERROR, "Line %d: %s without stream\n", line, keyword); | |
| FAIL(AVERROR_INVALIDDATA); | |
| } | |
| /* Arguments parsing */ | |
| for (arg = 0; arg < FF_ARRAY_ELEMS(dir->args) && dir->args[arg]; arg++) { | |
| switch (dir->args[arg]) { | |
| case 'd': /* duration */ | |
| arg_kw[arg] = get_keyword(&cursor); | |
| ret = av_parse_time(&arg_int[arg], arg_kw[arg], 1); | |
| if (ret < 0) { | |
| av_log(avf, AV_LOG_ERROR, "Line %d: invalid duration '%s'\n", | |
| line, arg_kw[arg]); | |
| goto fail; | |
| } | |
| break; | |
| case 'i': /* integer */ | |
| arg_int[arg] = strtol(get_keyword(&cursor), NULL, 0); | |
| break; | |
| case 'k': /* keyword */ | |
| arg_kw[arg] = get_keyword(&cursor); | |
| break; | |
| case 's': /* string */ | |
| av_assert0(!arg_str[arg]); | |
| arg_str[arg] = av_get_token((const char **)&cursor, SPACE_CHARS); | |
| if (!arg_str[arg]) | |
| FAIL(AVERROR(ENOMEM)); | |
| if (!*arg_str[arg]) { | |
| av_log(avf, AV_LOG_ERROR, "Line %d: string required\n", line); | |
| FAIL(AVERROR_INVALIDDATA); | |
| } | |
| break; | |
| default: | |
| FAIL(AVERROR_BUG); | |
| } | |
| } | |
| /* Directive action */ | |
| switch ((ParseDirective)(dir - syntax)) { | |
| case DIR_FFCONCAT: | |
| if (strcmp(arg_kw[0], "version") || strcmp(arg_kw[1], "1.0")) { | |
| av_log(avf, AV_LOG_ERROR, "Line %d: invalid version\n", line); | |
| FAIL(AVERROR_INVALIDDATA); | |
| } | |
| break; | |
| case DIR_FILE: | |
| ret = add_file(avf, arg_str[0], &file, &nb_files_alloc); | |
| arg_str[0] = NULL; | |
| if (ret < 0) | |
| goto fail; | |
| break; | |
| case DIR_DURATION: | |
| file->user_duration = arg_int[0]; | |
| break; | |
| case DIR_INPOINT: | |
| file->inpoint = arg_int[0]; | |
| break; | |
| case DIR_OUTPOINT: | |
| file->outpoint = arg_int[0]; | |
| break; | |
| case DIR_FPMETA: | |
| ret = av_dict_set(&file->metadata, arg_kw[0], arg_str[1], AV_DICT_DONT_STRDUP_VAL); | |
| arg_str[1] = NULL; | |
| if (ret < 0) | |
| FAIL(ret); | |
| break; | |
| case DIR_FPMETAS: | |
| if ((ret = av_dict_parse_string(&file->metadata, arg_str[0], "=", "", 0)) < 0) { | |
| av_log(avf, AV_LOG_ERROR, "Line %d: failed to parse metadata string\n", line); | |
| FAIL(AVERROR_INVALIDDATA); | |
| } | |
| av_log(avf, AV_LOG_WARNING, | |
| "'file_packet_metadata key=value:key=value' is deprecated, " | |
| "use multiple 'file_packet_meta key value' instead\n"); | |
| av_freep(&arg_str[0]); | |
| break; | |
| case DIR_OPTION: | |
| ret = av_dict_set(&file->options, arg_kw[0], arg_str[1], AV_DICT_DONT_STRDUP_VAL); | |
| arg_str[1] = NULL; | |
| if (ret < 0) | |
| FAIL(ret); | |
| break; | |
| case DIR_STREAM: | |
| stream = avformat_new_stream(avf, NULL); | |
| if (!stream) | |
| FAIL(AVERROR(ENOMEM)); | |
| break; | |
| case DIR_EXSID: | |
| stream->id = arg_int[0]; | |
| break; | |
| case DIR_STMETA: | |
| ret = av_dict_set(&stream->metadata, arg_kw[0], arg_str[1], AV_DICT_DONT_STRDUP_VAL); | |
| arg_str[1] = NULL; | |
| if (ret < 0) | |
| FAIL(ret); | |
| break; | |
| case DIR_STCODEC: { | |
| const AVCodecDescriptor *codec = avcodec_descriptor_get_by_name(arg_kw[0]); | |
| if (!codec) { | |
| av_log(avf, AV_LOG_ERROR, "Line %d: codec '%s' not found\n", line, arg_kw[0]); | |
| FAIL(AVERROR_DECODER_NOT_FOUND); | |
| } | |
| stream->codecpar->codec_type = codec->type; | |
| stream->codecpar->codec_id = codec->id; | |
| break; | |
| } | |
| case DIR_STEDATA: { | |
| int size = ff_hex_to_data(NULL, arg_kw[0]); | |
| ret = ff_alloc_extradata(stream->codecpar, size); | |
| if (ret < 0) | |
| FAIL(ret); | |
| ff_hex_to_data(stream->codecpar->extradata, arg_kw[0]); | |
| break; | |
| } | |
| case DIR_CHAPTER: | |
| chapter = avpriv_new_chapter(avf, arg_int[0], AV_TIME_BASE_Q, | |
| arg_int[1], arg_int[2], NULL); | |
| if (!chapter) | |
| FAIL(ENOMEM); | |
| break; | |
| default: | |
| FAIL(AVERROR_BUG); | |
| } | |
| } | |
| if (!file) { | |
| ret = AVERROR_INVALIDDATA; | |
| goto fail; | |
| } | |
| if (file->inpoint != AV_NOPTS_VALUE && file->outpoint != AV_NOPTS_VALUE) { | |
| if (file->inpoint > file->outpoint || | |
| file->outpoint - (uint64_t)file->inpoint > INT64_MAX) | |
| ret = AVERROR_INVALIDDATA; | |
| } | |
| fail: | |
| for (arg = 0; arg < MAX_ARGS; arg++) | |
| av_freep(&arg_str[arg]); | |
| av_bprint_finalize(&bp, NULL); | |
| return ret == AVERROR_EOF ? 0 : ret; | |
| } | |
| static int concat_read_header(AVFormatContext *avf) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| int64_t time = 0; | |
| unsigned i; | |
| int ret; | |
| ret = concat_parse_script(avf); | |
| if (ret < 0) | |
| return ret; | |
| if (!cat->nb_files) { | |
| av_log(avf, AV_LOG_ERROR, "No files to concat\n"); | |
| return AVERROR_INVALIDDATA; | |
| } | |
| for (i = 0; i < cat->nb_files; i++) { | |
| if (cat->files[i].start_time == AV_NOPTS_VALUE) | |
| cat->files[i].start_time = time; | |
| else | |
| time = cat->files[i].start_time; | |
| if (cat->files[i].user_duration == AV_NOPTS_VALUE) { | |
| if (cat->files[i].inpoint == AV_NOPTS_VALUE || cat->files[i].outpoint == AV_NOPTS_VALUE || | |
| cat->files[i].outpoint - (uint64_t)cat->files[i].inpoint != av_sat_sub64(cat->files[i].outpoint, cat->files[i].inpoint) | |
| ) | |
| break; | |
| cat->files[i].user_duration = cat->files[i].outpoint - cat->files[i].inpoint; | |
| } | |
| cat->files[i].duration = cat->files[i].user_duration; | |
| if (time + (uint64_t)cat->files[i].user_duration > INT64_MAX) | |
| return AVERROR_INVALIDDATA; | |
| time += cat->files[i].user_duration; | |
| } | |
| if (i == cat->nb_files) { | |
| avf->duration = time; | |
| cat->seekable = 1; | |
| } | |
| cat->stream_match_mode = avf->nb_streams ? MATCH_EXACT_ID : | |
| MATCH_ONE_TO_ONE; | |
| if ((ret = open_file(avf, 0)) < 0) | |
| return ret; | |
| return 0; | |
| } | |
| static int open_next_file(AVFormatContext *avf) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| unsigned fileno = cat->cur_file - cat->files; | |
| cat->cur_file->duration = get_best_effort_duration(cat->cur_file, cat->avf); | |
| if (++fileno >= cat->nb_files) { | |
| cat->eof = 1; | |
| return AVERROR_EOF; | |
| } | |
| return open_file(avf, fileno); | |
| } | |
| static int filter_packet(AVFormatContext *avf, ConcatStream *cs, AVPacket *pkt) | |
| { | |
| int ret; | |
| if (cs->bsf) { | |
| ret = av_bsf_send_packet(cs->bsf, pkt); | |
| if (ret < 0) { | |
| av_log(avf, AV_LOG_ERROR, "h264_mp4toannexb filter " | |
| "failed to send input packet\n"); | |
| return ret; | |
| } | |
| while (!ret) | |
| ret = av_bsf_receive_packet(cs->bsf, pkt); | |
| if (ret < 0 && (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)) { | |
| av_log(avf, AV_LOG_ERROR, "h264_mp4toannexb filter " | |
| "failed to receive output packet\n"); | |
| return ret; | |
| } | |
| } | |
| return 0; | |
| } | |
| /* Returns true if the packet dts is greater or equal to the specified outpoint. */ | |
| static int packet_after_outpoint(ConcatContext *cat, AVPacket *pkt) | |
| { | |
| if (cat->cur_file->outpoint != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE) { | |
| return av_compare_ts(pkt->dts, cat->avf->streams[pkt->stream_index]->time_base, | |
| cat->cur_file->outpoint, AV_TIME_BASE_Q) >= 0; | |
| } | |
| return 0; | |
| } | |
| static int concat_read_packet(AVFormatContext *avf, AVPacket *pkt) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| int ret; | |
| int64_t delta; | |
| ConcatStream *cs; | |
| AVStream *st; | |
| FFStream *sti; | |
| if (cat->eof) | |
| return AVERROR_EOF; | |
| if (!cat->avf) | |
| return AVERROR(EIO); | |
| while (1) { | |
| ret = av_read_frame(cat->avf, pkt); | |
| if (ret == AVERROR_EOF) { | |
| if ((ret = open_next_file(avf)) < 0) | |
| return ret; | |
| continue; | |
| } | |
| if (ret < 0) | |
| return ret; | |
| if ((ret = match_streams(avf)) < 0) { | |
| return ret; | |
| } | |
| if (packet_after_outpoint(cat, pkt)) { | |
| av_packet_unref(pkt); | |
| if ((ret = open_next_file(avf)) < 0) | |
| return ret; | |
| continue; | |
| } | |
| cs = &cat->cur_file->streams[pkt->stream_index]; | |
| if (cs->out_stream_index < 0) { | |
| av_packet_unref(pkt); | |
| continue; | |
| } | |
| break; | |
| } | |
| if ((ret = filter_packet(avf, cs, pkt)) < 0) | |
| return ret; | |
| st = cat->avf->streams[pkt->stream_index]; | |
| sti = ffstream(st); | |
| av_log(avf, AV_LOG_DEBUG, "file:%d stream:%d pts:%s pts_time:%s dts:%s dts_time:%s", | |
| (unsigned)(cat->cur_file - cat->files), pkt->stream_index, | |
| av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &st->time_base), | |
| av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &st->time_base)); | |
| delta = av_rescale_q(cat->cur_file->start_time - cat->cur_file->file_inpoint, | |
| AV_TIME_BASE_Q, | |
| cat->avf->streams[pkt->stream_index]->time_base); | |
| if (pkt->pts != AV_NOPTS_VALUE) | |
| pkt->pts += delta; | |
| if (pkt->dts != AV_NOPTS_VALUE) | |
| pkt->dts += delta; | |
| av_log(avf, 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)); | |
| if (cat->cur_file->metadata) { | |
| size_t metadata_len; | |
| char* packed_metadata = av_packet_pack_dictionary(cat->cur_file->metadata, &metadata_len); | |
| if (!packed_metadata) | |
| return AVERROR(ENOMEM); | |
| ret = av_packet_add_side_data(pkt, AV_PKT_DATA_STRINGS_METADATA, | |
| packed_metadata, metadata_len); | |
| if (ret < 0) { | |
| av_freep(&packed_metadata); | |
| return ret; | |
| } | |
| } | |
| if (cat->cur_file->duration == AV_NOPTS_VALUE && sti->cur_dts != AV_NOPTS_VALUE) { | |
| int64_t next_dts = av_rescale_q(sti->cur_dts, st->time_base, AV_TIME_BASE_Q); | |
| if (cat->cur_file->next_dts == AV_NOPTS_VALUE || next_dts > cat->cur_file->next_dts) { | |
| cat->cur_file->next_dts = next_dts; | |
| } | |
| } | |
| pkt->stream_index = cs->out_stream_index; | |
| return 0; | |
| } | |
| static int try_seek(AVFormatContext *avf, int stream, | |
| int64_t min_ts, int64_t ts, int64_t max_ts, int flags) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| int64_t t0 = cat->cur_file->start_time - cat->cur_file->file_inpoint; | |
| ts -= t0; | |
| min_ts = min_ts == INT64_MIN ? INT64_MIN : min_ts - t0; | |
| max_ts = max_ts == INT64_MAX ? INT64_MAX : max_ts - t0; | |
| if (stream >= 0) { | |
| if (stream >= cat->avf->nb_streams) | |
| return AVERROR(EIO); | |
| ff_rescale_interval(AV_TIME_BASE_Q, cat->avf->streams[stream]->time_base, | |
| &min_ts, &ts, &max_ts); | |
| } | |
| return avformat_seek_file(cat->avf, stream, min_ts, ts, max_ts, flags); | |
| } | |
| static int real_seek(AVFormatContext *avf, int stream, | |
| int64_t min_ts, int64_t ts, int64_t max_ts, int flags, AVFormatContext *cur_avf) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| int ret, left, right; | |
| if (stream >= 0) { | |
| if (stream >= avf->nb_streams) | |
| return AVERROR(EINVAL); | |
| ff_rescale_interval(avf->streams[stream]->time_base, AV_TIME_BASE_Q, | |
| &min_ts, &ts, &max_ts); | |
| } | |
| left = 0; | |
| right = cat->nb_files; | |
| /* Always support seek to start */ | |
| if (ts <= 0) | |
| right = 1; | |
| else if (!cat->seekable) | |
| return AVERROR(ESPIPE); /* XXX: can we use it? */ | |
| while (right - left > 1) { | |
| int mid = (left + right) / 2; | |
| if (ts < cat->files[mid].start_time) | |
| right = mid; | |
| else | |
| left = mid; | |
| } | |
| if (cat->cur_file != &cat->files[left]) { | |
| if ((ret = open_file(avf, left)) < 0) | |
| return ret; | |
| } else { | |
| cat->avf = cur_avf; | |
| } | |
| ret = try_seek(avf, stream, min_ts, ts, max_ts, flags); | |
| if (ret < 0 && | |
| left < cat->nb_files - 1 && | |
| cat->files[left + 1].start_time < max_ts) { | |
| if (cat->cur_file == &cat->files[left]) | |
| cat->avf = NULL; | |
| if ((ret = open_file(avf, left + 1)) < 0) | |
| return ret; | |
| ret = try_seek(avf, stream, min_ts, ts, max_ts, flags); | |
| } | |
| return ret; | |
| } | |
| static int concat_seek(AVFormatContext *avf, int stream, | |
| int64_t min_ts, int64_t ts, int64_t max_ts, int flags) | |
| { | |
| ConcatContext *cat = avf->priv_data; | |
| ConcatFile *cur_file_saved = cat->cur_file; | |
| AVFormatContext *cur_avf_saved = cat->avf; | |
| int ret; | |
| if (flags & (AVSEEK_FLAG_BYTE | AVSEEK_FLAG_FRAME)) | |
| return AVERROR(ENOSYS); | |
| cat->avf = NULL; | |
| if ((ret = real_seek(avf, stream, min_ts, ts, max_ts, flags, cur_avf_saved)) < 0) { | |
| if (cat->cur_file != cur_file_saved) { | |
| if (cat->avf) | |
| avformat_close_input(&cat->avf); | |
| } | |
| cat->avf = cur_avf_saved; | |
| cat->cur_file = cur_file_saved; | |
| } else { | |
| if (cat->cur_file != cur_file_saved) { | |
| avformat_close_input(&cur_avf_saved); | |
| } | |
| cat->eof = 0; | |
| } | |
| return ret; | |
| } | |
| #define OFFSET(x) offsetof(ConcatContext, x) | |
| #define DEC AV_OPT_FLAG_DECODING_PARAM | |
| static const AVOption options[] = { | |
| { "safe", "enable safe mode", | |
| OFFSET(safe), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, DEC }, | |
| { "auto_convert", "automatically convert bitstream format", | |
| OFFSET(auto_convert), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, DEC }, | |
| { "segment_time_metadata", "output file segment start time and duration as packet metadata", | |
| OFFSET(segment_time_metadata), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, DEC }, | |
| { NULL } | |
| }; | |
| static const AVClass concat_class = { | |
| .class_name = "concat demuxer", | |
| .item_name = av_default_item_name, | |
| .option = options, | |
| .version = LIBAVUTIL_VERSION_INT, | |
| }; | |
| const FFInputFormat ff_concat_demuxer = { | |
| .p.name = "concat", | |
| .p.long_name = NULL_IF_CONFIG_SMALL("Virtual concatenation script"), | |
| .p.priv_class = &concat_class, | |
| .priv_data_size = sizeof(ConcatContext), | |
| .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP, | |
| .read_probe = concat_probe, | |
| .read_header = concat_read_header, | |
| .read_packet = concat_read_packet, | |
| .read_close = concat_read_close, | |
| .read_seek2 = concat_seek, | |
| }; |