From 0e5ff31545ca44e1aa0045d91cd7badf56fccec8 Mon Sep 17 00:00:00 2001 From: Andreas Rheinhardt Date: Wed, 29 Apr 2020 07:24:02 +0200 Subject: avformat/matroskaenc: Cosmetics Mainly reindentation plus some reordering in MatroskaMuxContext; moreover, use the IS_SEEKABLE() macro troughout the code. Signed-off-by: Andreas Rheinhardt --- libavformat/matroskaenc.c | 301 +++++++++++++++++++++++----------------------- 1 file changed, 149 insertions(+), 152 deletions(-) (limited to 'libavformat') diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index fd590597c9..55b635865b 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -98,7 +98,7 @@ typedef struct mkv_cuepoint { } mkv_cuepoint; typedef struct mkv_cues { - mkv_cuepoint *entries; + mkv_cuepoint *entries; int num_entries; } mkv_cues; @@ -121,42 +121,42 @@ typedef struct mkv_track { #define MODE_WEBM 0x02 typedef struct MatroskaMuxContext { - const AVClass *class; - int mode; - ebml_stored_master info; - ebml_stored_master track; - ebml_stored_master tags; - int64_t segment_offset; - AVIOContext *cluster_bc; - int64_t cluster_pos; ///< file offset of the current cluster - int64_t cluster_pts; - int64_t duration_offset; - int64_t duration; - mkv_seekhead seekhead; - mkv_cues cues; - mkv_track *tracks; - - AVPacket cur_audio_pkt; - - unsigned nb_attachments; - int have_video; - - int reserve_cues_space; - int cluster_size_limit; - int64_t cues_pos; - int64_t cluster_time_limit; - int is_dash; - int dash_track_number; - int is_live; - int write_crc; - - uint32_t chapter_id_offset; - int wrote_chapters; - - int allow_raw_vfw; - int default_mode; - - uint32_t segment_uid[4]; + const AVClass *class; + int mode; + ebml_stored_master info; + ebml_stored_master track; + ebml_stored_master tags; + int64_t segment_offset; + AVIOContext *cluster_bc; + int64_t cluster_pos; ///< file offset of the current Cluster + int64_t cluster_pts; + int64_t duration_offset; + int64_t duration; + mkv_track *tracks; + mkv_seekhead seekhead; + mkv_cues cues; + int64_t cues_pos; + + AVPacket cur_audio_pkt; + + unsigned nb_attachments; + int have_video; + + uint32_t chapter_id_offset; + int wrote_chapters; + + int reserve_cues_space; + int cluster_size_limit; + int64_t cluster_time_limit; + int write_crc; + int is_live; + + int is_dash; + int dash_track_number; + int allow_raw_vfw; + int default_mode; + + uint32_t segment_uid[4]; } MatroskaMuxContext; /** 2 bytes * 7 for EBML IDs, 7 1-byte EBML lengths, 6 1-byte uint, @@ -378,9 +378,9 @@ static int start_ebml_master_crc32(AVIOContext **dyn_cp, MatroskaMuxContext *mkv } static int end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, - MatroskaMuxContext *mkv, uint32_t id, - int length_size, int keep_buffer, - int add_seekentry) + MatroskaMuxContext *mkv, uint32_t id, + int length_size, int keep_buffer, + int add_seekentry) { uint8_t *buf, crc[4]; int ret, size, skip = 0; @@ -415,11 +415,11 @@ fail: * Furthermore always add a SeekHead Entry for this element. */ static int end_ebml_master_crc32_tentatively(AVIOContext *pb, - ebml_stored_master *elem, - MatroskaMuxContext *mkv, uint32_t id) + ebml_stored_master *elem, + MatroskaMuxContext *mkv, uint32_t id) { - if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live) { - uint8_t *buf; + if (IS_SEEKABLE(pb, mkv)) { + uint8_t *buf; int size = avio_get_dyn_buf(elem->bc, &buf); if (elem->bc->error < 0) @@ -428,9 +428,9 @@ static int end_ebml_master_crc32_tentatively(AVIOContext *pb, elem->pos = avio_tell(pb); mkv_add_seekhead_entry(mkv, id, elem->pos); - put_ebml_id(pb, id); - put_ebml_length(pb, size, 0); - avio_write(pb, buf, size); + put_ebml_id(pb, id); + put_ebml_length(pb, size, 0); + avio_write(pb, buf, size); return 0; } else @@ -818,17 +818,17 @@ static int mkv_write_codecprivate(AVFormatContext *s, AVIOContext *pb, } if (ret >= 0) { - codecpriv_size = avio_get_dyn_buf(dyn_cp, &codecpriv); + codecpriv_size = avio_get_dyn_buf(dyn_cp, &codecpriv); if ((ret = dyn_cp->error) >= 0 && codecpriv_size) - put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv, - codecpriv_size); + put_ebml_binary(pb, MATROSKA_ID_CODECPRIVATE, codecpriv, + codecpriv_size); } ffio_free_dyn_buf(&dyn_cp); return ret; } -static void mkv_write_video_color(AVIOContext *pb, const AVCodecParameters *par, - const AVStream *st) +static void mkv_write_video_color(AVIOContext *pb, const AVStream *st, + const AVCodecParameters *par) { /* 18 Elements with two bytes ID, one byte length field, 8 bytes payload * a master element with two bytes ID and one byte length field @@ -911,9 +911,8 @@ static void mkv_write_video_color(AVIOContext *pb, const AVCodecParameters *par, } colorinfo_size = avio_tell(dyn_cp); - if (colorinfo_size) { + if (colorinfo_size) put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLOR, colour, colorinfo_size); - } } static int mkv_write_video_projection(AVFormatContext *s, AVIOContext *pb, @@ -1306,7 +1305,7 @@ static int mkv_write_track(AVFormatContext *s, MatroskaMuxContext *mkv, uint32_t color_space = av_le2ne32(par->codec_tag); put_ebml_binary(pb, MATROSKA_ID_VIDEOCOLORSPACE, &color_space, sizeof(color_space)); } - mkv_write_video_color(pb, par, st); + mkv_write_video_color(pb, st, par); ret = mkv_write_video_projection(s, pb, st); if (ret < 0) @@ -1443,7 +1442,7 @@ static int mkv_write_tracks(AVFormatContext *s) } return end_ebml_master_crc32_tentatively(pb, &mkv->track, mkv, - MATROSKA_ID_TRACKS); + MATROSKA_ID_TRACKS); } static int mkv_write_chapters(AVFormatContext *s) @@ -1616,7 +1615,7 @@ static int mkv_check_tag(const AVDictionary *m, uint32_t elementid) static int mkv_write_tags(AVFormatContext *s) { MatroskaMuxContext *mkv = s->priv_data; - ebml_master tag, *tagp; + ebml_master tag, *tagp = IS_SEEKABLE(s->pb, mkv) ? &tag : NULL; int i, ret; ff_metadata_conv_ctx(s, ff_mkv_metadata_conv, NULL); @@ -1627,7 +1626,6 @@ static int mkv_write_tags(AVFormatContext *s) return ret; } - tagp = (s->pb->seekable & AVIO_SEEKABLE_NORMAL) && !mkv->is_live ? &tag : NULL; for (i = 0; i < s->nb_streams; i++) { const AVStream *st = s->streams[i]; mkv_track *track = &mkv->tracks[i]; @@ -1695,7 +1693,7 @@ static int mkv_write_tags(AVFormatContext *s) if (mkv->tags.bc) { return end_ebml_master_crc32_tentatively(s->pb, &mkv->tags, mkv, - MATROSKA_ID_TAGS); + MATROSKA_ID_TAGS); } return 0; } @@ -1820,7 +1818,7 @@ static int mkv_write_header(AVFormatContext *s) put_ebml_size_unknown(pb, 8); mkv->segment_offset = avio_tell(pb); - // we write a seek head at the beginning to point to all other level + // We write a SeekHead at the beginning to point to all other level // one elements (except Clusters). mkv_start_seekhead(mkv, pb); @@ -1898,7 +1896,7 @@ static int mkv_write_header(AVFormatContext *s) if (ret < 0) return ret; - if (!(s->pb->seekable & AVIO_SEEKABLE_NORMAL) || mkv->is_live) { + if (!IS_SEEKABLE(pb, mkv)) { ret = mkv_write_seekhead(pb, mkv, 0, avio_tell(pb)); if (ret < 0) return ret; @@ -1912,10 +1910,10 @@ static int mkv_write_header(AVFormatContext *s) if (mkv->reserve_cues_space) { if (IS_SEEKABLE(pb, mkv)) { - mkv->cues_pos = avio_tell(pb); - if (mkv->reserve_cues_space == 1) - mkv->reserve_cues_space++; - put_ebml_void(pb, mkv->reserve_cues_space); + mkv->cues_pos = avio_tell(pb); + if (mkv->reserve_cues_space == 1) + mkv->reserve_cues_space++; + put_ebml_void(pb, mkv->reserve_cues_space); } else mkv->reserve_cues_space = -1; } @@ -2472,7 +2470,7 @@ static int mkv_write_trailer(AVFormatContext *s) if (mkv->cluster_pos != -1) { ret = end_ebml_master_crc32(pb, &mkv->cluster_bc, mkv, - MATROSKA_ID_CLUSTER, 0, 0, 0); + MATROSKA_ID_CLUSTER, 0, 0, 0); if (ret < 0) return ret; } @@ -2484,64 +2482,63 @@ static int mkv_write_trailer(AVFormatContext *s) if (!IS_SEEKABLE(pb, mkv)) return 0; - endpos = avio_tell(pb); + endpos = avio_tell(pb); - if (mkv->cues.num_entries && mkv->reserve_cues_space >= 0) { - AVIOContext *cues = NULL; - uint64_t size; - int length_size = 0; + if (mkv->cues.num_entries && mkv->reserve_cues_space >= 0) { + AVIOContext *cues = NULL; + uint64_t size; + int length_size = 0; - ret = start_ebml_master_crc32(&cues, mkv); - if (ret < 0) - return ret; + ret = start_ebml_master_crc32(&cues, mkv); + if (ret < 0) + return ret; - ret = mkv_assemble_cues(s->streams, cues, &mkv->cues, - mkv->tracks, s->nb_streams); - if (ret < 0) { - ffio_free_dyn_buf(&cues); - return ret; - } + ret = mkv_assemble_cues(s->streams, cues, &mkv->cues, + mkv->tracks, s->nb_streams); + if (ret < 0) { + ffio_free_dyn_buf(&cues); + return ret; + } - if (mkv->reserve_cues_space) { - size = avio_tell(cues); - length_size = ebml_length_size(size); - size += 4 + length_size; - if (mkv->reserve_cues_space < size) { - av_log(s, AV_LOG_WARNING, - "Insufficient space reserved for Cues: " - "%d < %"PRIu64". No Cues will be output.\n", - mkv->reserve_cues_space, size); - ret2 = AVERROR(EINVAL); + if (mkv->reserve_cues_space) { + size = avio_tell(cues); + length_size = ebml_length_size(size); + size += 4 + length_size; + if (mkv->reserve_cues_space < size) { + av_log(s, AV_LOG_WARNING, + "Insufficient space reserved for Cues: " + "%d < %"PRIu64". No Cues will be output.\n", + mkv->reserve_cues_space, size); + ret2 = AVERROR(EINVAL); + goto after_cues; + } else { + if ((ret64 = avio_seek(pb, mkv->cues_pos, SEEK_SET)) < 0) { ffio_free_dyn_buf(&cues); - goto after_cues; - } else { - if ((ret64 = avio_seek(pb, mkv->cues_pos, SEEK_SET)) < 0) { - ffio_free_dyn_buf(&cues); - return ret64; - } - if (mkv->reserve_cues_space == size + 1) { - /* There is no way to reserve a single byte because - * the minimal size of an EBML Void element is 2 - * (1 byte ID, 1 byte length field). This problem - * is solved by writing the Cues' length field on - * one byte more than necessary. */ - length_size++; - size++; - } + return ret64; + } + if (mkv->reserve_cues_space == size + 1) { + /* There is no way to reserve a single byte because + * the minimal size of an EBML Void element is 2 + * (1 byte ID, 1 byte length field). This problem + * is solved by writing the Cues' length field on + * one byte more than necessary. */ + length_size++; + size++; } } - ret = end_ebml_master_crc32(pb, &cues, mkv, MATROSKA_ID_CUES, - length_size, 0, 1); - if (ret < 0) - return ret; - if (mkv->reserve_cues_space) { - if (size < mkv->reserve_cues_space) - put_ebml_void(pb, mkv->reserve_cues_space - size); - } else - endpos = avio_tell(pb); } + ret = end_ebml_master_crc32(pb, &cues, mkv, MATROSKA_ID_CUES, + length_size, 0, 1); + if (ret < 0) + return ret; + if (mkv->reserve_cues_space) { + if (size < mkv->reserve_cues_space) + put_ebml_void(pb, mkv->reserve_cues_space - size); + } else + endpos = avio_tell(pb); + } - after_cues: +after_cues: /* Lengths greater than (1ULL << 56) - 1 can't be represented * via an EBML number, so leave the unknown length field. */ if (endpos - mkv->segment_offset < (1ULL << 56) - 1) { @@ -2550,11 +2547,11 @@ static int mkv_write_trailer(AVFormatContext *s) put_ebml_length(pb, endpos - mkv->segment_offset, 8); } - ret = mkv_write_seekhead(pb, mkv, 1, mkv->info.pos); - if (ret < 0) - return ret; + ret = mkv_write_seekhead(pb, mkv, 1, mkv->info.pos); + if (ret < 0) + return ret; - if (mkv->info.bc) { + if (mkv->info.bc) { // update the duration av_log(s, AV_LOG_DEBUG, "end duration = %" PRIu64 "\n", mkv->duration); avio_seek(mkv->info.bc, mkv->duration_offset, SEEK_SET); @@ -2563,49 +2560,49 @@ static int mkv_write_trailer(AVFormatContext *s) MATROSKA_ID_INFO, 0, 0, 0); if (ret < 0) return ret; - } + } - if (mkv->track.bc) { - // write Tracks master - avio_seek(pb, mkv->track.pos, SEEK_SET); - ret = end_ebml_master_crc32(pb, &mkv->track.bc, mkv, - MATROSKA_ID_TRACKS, 0, 0, 0); - if (ret < 0) - return ret; - } + if (mkv->track.bc) { + // write Tracks master + avio_seek(pb, mkv->track.pos, SEEK_SET); + ret = end_ebml_master_crc32(pb, &mkv->track.bc, mkv, + MATROSKA_ID_TRACKS, 0, 0, 0); + if (ret < 0) + return ret; + } - // update stream durations - if (mkv->tags.bc) { - int i; - for (i = 0; i < s->nb_streams; ++i) { - const AVStream *st = s->streams[i]; - const mkv_track *track = &mkv->tracks[i]; + // update stream durations + if (mkv->tags.bc) { + int i; + for (i = 0; i < s->nb_streams; ++i) { + const AVStream *st = s->streams[i]; + const mkv_track *track = &mkv->tracks[i]; - if (track->duration_offset > 0) { - double duration_sec = track->duration * av_q2d(st->time_base); - char duration_string[20] = ""; + if (track->duration_offset > 0) { + double duration_sec = track->duration * av_q2d(st->time_base); + char duration_string[20] = ""; - av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i, - track->duration); + av_log(s, AV_LOG_DEBUG, "stream %d end duration = %" PRIu64 "\n", i, + track->duration); - avio_seek(mkv->tags.bc, track->duration_offset, SEEK_SET); + avio_seek(mkv->tags.bc, track->duration_offset, SEEK_SET); - snprintf(duration_string, 20, "%02d:%02d:%012.9f", - (int) duration_sec / 3600, ((int) duration_sec / 60) % 60, - fmod(duration_sec, 60)); + snprintf(duration_string, 20, "%02d:%02d:%012.9f", + (int) duration_sec / 3600, ((int) duration_sec / 60) % 60, + fmod(duration_sec, 60)); - put_ebml_binary(mkv->tags.bc, MATROSKA_ID_TAGSTRING, duration_string, 20); - } + put_ebml_binary(mkv->tags.bc, MATROSKA_ID_TAGSTRING, duration_string, 20); } - - avio_seek(pb, mkv->tags.pos, SEEK_SET); - ret = end_ebml_master_crc32(pb, &mkv->tags.bc, mkv, - MATROSKA_ID_TAGS, 0, 0, 0); - if (ret < 0) - return ret; } - avio_seek(pb, endpos, SEEK_SET); + avio_seek(pb, mkv->tags.pos, SEEK_SET); + ret = end_ebml_master_crc32(pb, &mkv->tags.bc, mkv, + MATROSKA_ID_TAGS, 0, 0, 0); + if (ret < 0) + return ret; + } + + avio_seek(pb, endpos, SEEK_SET); return ret2; } -- cgit v1.2.3