diff options
| author | James Almer <jamrial@gmail.com> | 2016-10-06 18:17:04 -0300 |
|---|---|---|
| committer | James Almer <jamrial@gmail.com> | 2016-10-06 18:42:10 -0300 |
| commit | 711bfb33df4efa252a85d2d6987c435d0eef1a48 (patch) | |
| tree | 0f0b5dc2925f460fd308a83846e0d7b3b48ff97f /libavformat/matroskaenc.c | |
| parent | 3bcadf822711720ff0f8d14db71ae47cdf97e652 (diff) | |
avformat/matroskaenc: add an option to disable writting CRC32 elements
Also add missing Changelog entry.
Signed-off-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavformat/matroskaenc.c')
| -rw-r--r-- | libavformat/matroskaenc.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c index 5b6d3a6f5a..0878cb5cba 100644 --- a/libavformat/matroskaenc.c +++ b/libavformat/matroskaenc.c @@ -134,6 +134,7 @@ typedef struct MatroskaMuxContext { int is_dash; int dash_track_number; int is_live; + int write_crc; uint32_t chapter_id_offset; int wrote_chapters; @@ -334,7 +335,7 @@ static void end_ebml_master_crc32(AVIOContext *pb, AVIOContext **dyn_cp, Matrosk if (pb->seekable) { size = avio_close_dyn_buf(*dyn_cp, &buf); - if (mkv->mode != MODE_WEBM) { + if (mkv->write_crc && mkv->mode != MODE_WEBM) { AV_WL32(crc, av_crc(av_crc_get_table(AV_CRC_32_IEEE_LE), UINT32_MAX, buf, size) ^ UINT32_MAX); put_ebml_binary(pb, EBML_ID_CRC32, crc, sizeof(crc)); } @@ -1485,7 +1486,7 @@ static int mkv_write_tags(AVFormatContext *s) if (mkv->tags.pos) { if (s->pb->seekable && !mkv->is_live) - put_ebml_void(s->pb, avio_tell(mkv->tags_bc) + ((mkv->mode != MODE_WEBM) ? 2 /* ebml id + data size */ + 4 /* CRC32 */ : 0)); + put_ebml_void(s->pb, avio_tell(mkv->tags_bc) + ((mkv->write_crc && mkv->mode != MODE_WEBM) ? 2 /* ebml id + data size */ + 4 /* CRC32 */ : 0)); else end_ebml_master_crc32(s->pb, &mkv->tags_bc, mkv, mkv->tags); } @@ -1729,7 +1730,7 @@ static int mkv_write_header(AVFormatContext *s) } } if (s->pb->seekable) - put_ebml_void(s->pb, avio_tell(pb) + ((mkv->mode != MODE_WEBM) ? 2 /* ebml id + data size */ + 4 /* CRC32 */ : 0)); + put_ebml_void(s->pb, avio_tell(pb) + ((mkv->write_crc && mkv->mode != MODE_WEBM) ? 2 /* ebml id + data size */ + 4 /* CRC32 */ : 0)); else end_ebml_master_crc32(s->pb, &mkv->info_bc, mkv, mkv->info); pb = s->pb; @@ -2390,6 +2391,7 @@ static const AVOption options[] = { { "dash_track_number", "Track number for the DASH stream", OFFSET(dash_track_number), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 127, FLAGS }, { "live", "Write files assuming it is a live stream.", OFFSET(is_live), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, { "allow_raw_vfw", "allow RAW VFW mode", OFFSET(allow_raw_vfw), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, + { "write_crc32", "write a CRC32 element inside every Level 1 element", OFFSET(write_crc), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS }, { NULL }, }; |