From 6a8a3bfb873730c1c13a496c3afa37020a8328a2 Mon Sep 17 00:00:00 2001 From: Mark Reid Date: Wed, 28 Jan 2015 19:44:21 -0800 Subject: libavformat/mxfenc.c: added mxf opatom muxer Signed-off-by: Michael Niedermayer --- libavformat/mxfenc.c | 139 ++++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 126 insertions(+), 13 deletions(-) (limited to 'libavformat/mxfenc.c') diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c index a850239375..541c2b260f 100644 --- a/libavformat/mxfenc.c +++ b/libavformat/mxfenc.c @@ -52,6 +52,7 @@ #include "config.h" extern AVOutputFormat ff_mxf_d10_muxer; +extern AVOutputFormat ff_mxf_opatom_muxer; #define EDIT_UNITS_PER_BODY 250 #define KAG_SIZE 512 @@ -320,6 +321,7 @@ static const uint8_t umid_ul[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x * complete key for operation pattern, partitions, and primer pack */ static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 }; +static const uint8_t opatom_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x02,0x01,0x10,0x03,0x00,0x00 }; static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }; static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 }; @@ -483,6 +485,12 @@ static void klv_encode_ber4_length(AVIOContext *pb, int len) avio_wb24(pb, len); } +static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len) +{ + avio_w8(pb, 0x80 + 8); + avio_wb64(pb, len); +} + /* * Get essence container ul index */ @@ -601,7 +609,10 @@ static void mxf_write_preface(AVFormatContext *s) // operational pattern mxf_write_local_tag(pb, 16, 0x3B09); - avio_write(pb, op1a_ul, 16); + if (s->oformat == &ff_mxf_opatom_muxer) + avio_write(pb, opatom_ul, 16); + else + avio_write(pb, op1a_ul, 16); // write essence_container_refs mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A); @@ -1362,7 +1373,7 @@ static int mxf_write_partition(AVFormatContext *s, int bodysid, index_byte_count += klv_fill_size(index_byte_count); } - if (!memcmp(key, body_partition_key, 16)) { + if (key && !memcmp(key, body_partition_key, 16)) { if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1, sizeof(*mxf->body_partition_offset))) < 0) { mxf->body_partitions_count = 0; @@ -1372,7 +1383,11 @@ static int mxf_write_partition(AVFormatContext *s, int bodysid, } // write klv - avio_write(pb, key, 16); + if (key) + avio_write(pb, key, 16); + else + avio_write(pb, body_partition_key, 16); + klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count)); // write partition value @@ -1382,9 +1397,9 @@ static int mxf_write_partition(AVFormatContext *s, int bodysid, avio_wb64(pb, partition_offset); // ThisPartition - if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1) + if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1) avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition - else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count) + else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count) avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition else avio_wb64(pb, 0); @@ -1400,15 +1415,18 @@ static int mxf_write_partition(AVFormatContext *s, int bodysid, avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID // BodyOffset - if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) { + if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer) avio_wb64(pb, mxf->body_offset); - } else + else avio_wb64(pb, 0); avio_wb32(pb, bodysid); // bodySID // operational pattern - avio_write(pb, op1a_ul, 16); + if (s->oformat == &ff_mxf_opatom_muxer) + avio_write(pb, opatom_ul, 16); + else + avio_write(pb, op1a_ul, 16); // essence container mxf_write_essence_container_refs(s); @@ -1431,7 +1449,8 @@ static int mxf_write_partition(AVFormatContext *s, int bodysid, avio_seek(pb, pos, SEEK_SET); } - avio_flush(pb); + if(key) + avio_flush(pb); return 0; } @@ -1498,6 +1517,11 @@ AVPacket *pkt) sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul; sc->aspect_ratio = (AVRational){ 16, 9 }; + if(s->oformat == &ff_mxf_opatom_muxer){ + mxf->edit_unit_byte_count = frame_size; + return 1; + } + mxf->edit_unit_byte_count = KAG_SIZE; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; @@ -1568,6 +1592,11 @@ static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt) sc->index = ul_index + 16; sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul; + if(s->oformat == &ff_mxf_opatom_muxer) { + mxf->edit_unit_byte_count = frame_size; + return 1; + } + mxf->edit_unit_byte_count = KAG_SIZE; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; @@ -1803,6 +1832,11 @@ static int mxf_write_header(AVFormatContext *s) if (!s->nb_streams) return -1; + if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1){ + av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n"); + return -1; + } + for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MXFStreamContext *sc = av_mallocz(sizeof(*sc)); @@ -1901,7 +1935,7 @@ static int mxf_write_header(AVFormatContext *s) present[sc->index]++; } - if (s->oformat == &ff_mxf_d10_muxer) { + if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) { mxf->essence_container_count = 1; } @@ -2046,6 +2080,60 @@ static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacke } } +static int mxf_write_opatom_body_partition(AVFormatContext *s) +{ + MXFContext *mxf = s->priv_data; + AVIOContext *pb = s->pb; + AVStream *st = s->streams[0]; + MXFStreamContext *sc = st->priv_data; + const uint8_t *key = NULL; + + int err; + + if (!mxf->header_written) + key = body_partition_key; + + if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0) + return err; + mxf_write_klv_fill(s); + avio_write(pb, sc->track_essence_element_key, 16); + klv_encode_ber9_length(pb, mxf->body_offset); + return 0; +} + +static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie) +{ + MXFContext *mxf = s->priv_data; + AVIOContext *pb = s->pb; + AVStream *st = s->streams[pkt->stream_index]; + MXFStreamContext *sc = st->priv_data; + + int err; + + if (!mxf->header_written) { + if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0) + return err; + mxf_write_klv_fill(s); + + if ((err = mxf_write_opatom_body_partition(s)) < 0) + return err; + mxf->header_written = 1; + } + + if (!mxf->edit_unit_byte_count) { + mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset; + mxf->index_entries[mxf->edit_units_count].flags = ie->flags; + mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref; + } + mxf->edit_units_count++; + avio_write(pb, pkt->data, pkt->size); + mxf->body_offset += pkt->size; + + avio_flush(pb); + + return 0; +} + static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt) { MXFContext *mxf = s->priv_data; @@ -2086,6 +2174,9 @@ static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt) } } + if (s->oformat == &ff_mxf_opatom_muxer) + return mxf_write_opatom_packet(s, pkt, &ie); + if (!mxf->header_written) { if (mxf->edit_unit_byte_count) { if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0) @@ -2153,7 +2244,7 @@ static void mxf_write_random_index_pack(AVFormatContext *s) avio_write(pb, random_index_pack_key, 16); klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count); - if (mxf->edit_unit_byte_count) + if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) avio_wb32(pb, 1); // BodySID of header partition else avio_wb32(pb, 0); @@ -2180,7 +2271,7 @@ static int mxf_write_footer(AVFormatContext *s) mxf_write_klv_fill(s); mxf->footer_partition_offset = avio_tell(pb); - if (mxf->edit_unit_byte_count) { // no need to repeat index + if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0) return err; } else { @@ -2194,8 +2285,15 @@ static int mxf_write_footer(AVFormatContext *s) mxf_write_random_index_pack(s); if (s->pb->seekable) { + if (s->oformat == &ff_mxf_opatom_muxer){ + /* rewrite body partition to update lengths */ + avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET); + if ((err = mxf_write_opatom_body_partition(s)) < 0) + return err; + } + avio_seek(pb, 0, SEEK_SET); - if (mxf->edit_unit_byte_count) { + if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0) return err; mxf_write_klv_fill(s); @@ -2330,3 +2428,18 @@ AVOutputFormat ff_mxf_d10_muxer = { .interleave_packet = mxf_interleave, .priv_class = &mxf_d10_muxer_class, }; + +AVOutputFormat ff_mxf_opatom_muxer = { + .name = "mxf_opatom", + .long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"), + .mime_type = "application/mxf", + .extensions = "mxf", + .priv_data_size = sizeof(MXFContext), + .audio_codec = AV_CODEC_ID_PCM_S16LE, + .video_codec = AV_CODEC_ID_DNXHD, + .write_header = mxf_write_header, + .write_packet = mxf_write_packet, + .write_trailer = mxf_write_footer, + .flags = AVFMT_NOTIMESTAMPS, + .interleave_packet = mxf_interleave, +}; 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