mxfenc.c 29.6 KB
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/*
 * MXF muxer
 * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
 *
 * 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
 */

/*
 * References
 * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
 * SMPTE 377M MXF File Format Specifications
 * SMPTE 379M MXF Generic Container
 * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
 * SMPTE RP210: SMPTE Metadata Dictionary
 * SMPTE RP224: Registry of SMPTE Universal Labels
 */

//#define DEBUG

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#include "mxf.h"

typedef struct {
    int local_tag;
    UID uid;
} MXFLocalTagPair;

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typedef struct {
    UID track_essence_element_key;
} MXFStreamContext;

typedef struct MXFContext {
    int64_t header_byte_count;
    int64_t header_byte_count_offset;
    int64_t header_footer_partition_offset;
    int essence_container_count;
} MXFContext;
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typedef struct {
    const UID key;
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    void (*write)();
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    enum CodecType type;
} MXFDescriptorWriteTableEntry;

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static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
static const uint8_t umid_base[]            = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x0F,0x00,0x13,0x00,0x00,0x00 };

/**
 * complete key for operation pattern, partitions, and primer pack
 */
static const uint8_t op1a_ul[]              = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
static const uint8_t header_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete
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 };

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/**
 * partial key for header metadata
 */
static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };

static const MXFCodecUL mxf_essence_element_key[] = {
    { { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, 14, CODEC_ID_MPEG2VIDEO},
    { { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 }, 14, CODEC_ID_PCM_S16LE},
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, CODEC_ID_NONE},
};

static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };

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/**
 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 */
static const MXFLocalTagPair mxf_local_tag_batch[] = {
    // preface set
    { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
    { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
    { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
    { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
    { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
    { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
    { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
    { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
    // Identification
    { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
    { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
    { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
    { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x04,0x00,0x00,0x00}}, /* Version String */
    { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
    { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
    // Content Storage
    { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
    // Essence Container Data
    { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
    { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
    // Package
    { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
    { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
    { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
    { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
    { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
    // Track
    { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
    { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x03,0x00,0x00}}, /* Track Numberr */
    { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
    { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
    { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
    // Sequence
    { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
    { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
    { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
    // Source Clip
    { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Start position */
    { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
    { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
    // file descriptor
    { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* sub descriptor uid*/
    { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
    { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
    { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* essence container ul */
    // generic picture eseence descriptor
    { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* stored width */
    { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* stored heigth */
    { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* aspect ratio*/
    { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* picture essence coding*/
    // generic sound essence descriptor
    { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* audio sampling rate */
    { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* channel count */
    { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* quantization bits */
    { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* sound essence compression */
};

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static void mxf_write_uuid(ByteIOContext *pb, enum CodecID type, int value)
{
    put_buffer(pb, uuid_base, 12);
    put_be16(pb, type);
    put_be16(pb, value);
}

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static void mxf_write_umid(ByteIOContext *pb, enum CodecID type, int value)
{
    put_buffer(pb, umid_base, 16);
    mxf_write_uuid(pb, type, value);
}
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static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
{
    put_be32(pb, ref_count);
    put_be32(pb, 16);
}

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static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
{
    // Determine the best BER size
    int size;
    if (len < 128) {
        //short form
        put_byte(pb, len);
        return 1;
    }

    size = (av_log2(len) >> 3) + 1;

    // long form
    put_byte(pb, 0x80 + size);
    while(size) {
        size --;
        put_byte(pb, len >> 8 * size & 0xff);
    }
    return 0;
}

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static const MXFCodecUL *mxf_get_essence_container_ul(enum CodecID type)
{
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    const MXFCodecUL *uls = ff_mxf_essence_container_uls;
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    while (uls->id != CODEC_ID_NONE) {
        if (uls->id == type)
            break;
        uls++;
    }
    return uls;
}

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static void mxf_write_primer_pack(AVFormatContext *s)
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{
    ByteIOContext *pb = s->pb;
    int local_tag_number, i = 0;

    local_tag_number = sizeof(mxf_local_tag_batch) / sizeof(MXFLocalTagPair);

    put_buffer(pb, primer_pack_key, 16);
    klv_encode_ber_length(pb, local_tag_number * 18 + 8);

    put_be32(pb, local_tag_number); // local_tag num
    put_be32(pb, 18); // item size, always 18 according to the specs

    for (i = 0; i < local_tag_number; i++) {
        put_be16(pb, mxf_local_tag_batch[i].local_tag);
        put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
    }
}

static void mxf_write_local_tag(ByteIOContext *pb, int value_size, int tag)
{
    put_be16(pb, tag);
    put_be16(pb, value_size);
}

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static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
{
    put_buffer(pb, header_metadata_key, 13);
    put_be24(pb, value);
}

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static void mxf_free(AVFormatContext *s)
{
    AVStream *st;
    int i;

    for (i = 0; i < s->nb_streams; i++) {
        st = s->streams[i];
        av_freep(&st->priv_data);
    }
}

static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
{
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    const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
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    while (uls->type != CODEC_TYPE_DATA) {
        if (type == uls->type)
            break;
        uls ++;
    }
    return uls;
}

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static int mxf_write_essence_container_refs(AVFormatContext *s, int write)
{
    ByteIOContext *pb = s->pb;
    AVStream *st;
    int i, count = 0, j = 0;
    const MXFCodecUL *codec_ul;
    int essence_container_ul_sign[sizeof(ff_mxf_essence_container_uls) / sizeof(MXFCodecUL)] = { 0 };

    for (codec_ul = ff_mxf_essence_container_uls; codec_ul->id; codec_ul++) {
        for (i = 0; i < s->nb_streams; i++) {
            st = s->streams[i];
            if (st->codec->codec_id == codec_ul->id) {
                essence_container_ul_sign[count] = j;
                count++;
                break;
            }
        }
        j++;
        // considering WAV/AES3 frame wrapped, when get the first CODEC_ID_PCM_S16LE, break;
        // this is a temporary method, when we can get  more information, modofy this.
        if (codec_ul->id == CODEC_ID_PCM_S16LE)
            break;
    }

    if (write) {
        mxf_write_refs_count(pb, count);
        for (i = 0; i < count; i++) {
            put_buffer(pb, ff_mxf_essence_container_uls[essence_container_ul_sign[i]].uid, 16);
        }
        av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", count);
        for (i = 0; i < count; i++)
            PRINT_KEY(s, "essence container ul:\n", ff_mxf_essence_container_uls[essence_container_ul_sign[i]].uid);
    }
    return count;
}

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static void mxf_write_preface(AVFormatContext *s)
{
    MXFContext *mxf = s->priv_data;
    ByteIOContext *pb = s->pb;

    mxf_write_metadata_key(pb, 0x012f00);
    PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
    klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);

    // write preface set uid
    mxf_write_local_tag(pb, 16, 0x3C0A);
    mxf_write_uuid(pb, Preface, 0);
    PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);

    // write create date as unknown
    mxf_write_local_tag(pb, 8, 0x3B02);
    put_be64(pb, 0);

    // write version
    mxf_write_local_tag(pb, 2, 0x3B05);
    put_be16(pb, 1);

    // write identification_refs
    mxf_write_local_tag(pb, 16 + 8, 0x3B06);
    mxf_write_refs_count(pb, 1);
    mxf_write_uuid(pb, Identification, 0);

    // write content_storage_refs
    mxf_write_local_tag(pb, 16, 0x3B03);
    mxf_write_uuid(pb, ContentStorage, 0);

    mxf_write_local_tag(pb, 16, 0x3B09);
    put_buffer(pb, op1a_ul, 16);

    // write essence_container_refs
    mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
    mxf_write_essence_container_refs(s, 1);

    // write dm_scheme_refs
    mxf_write_local_tag(pb, 8, 0x3B0B);
    put_be64(pb, 0);
}

static void mxf_write_identification(AVFormatContext *s)
{
    ByteIOContext *pb = s->pb;
    int length, company_name_len, product_name_len, version_string_len;

    mxf_write_metadata_key(pb, 0x013000);
    PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
    company_name_len = sizeof("FFmpeg");
    product_name_len = sizeof("OP1a Muxer");

    length = 80 + company_name_len + product_name_len;
    if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
        version_string_len = sizeof(LIBAVFORMAT_IDENT);
        length += 4 + version_string_len;
    }
    klv_encode_ber_length(pb, length);

    // write uid
    mxf_write_local_tag(pb, 16, 0x3C0A);
    mxf_write_uuid(pb, Identification, 0);
    PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
    // write generation uid
    mxf_write_local_tag(pb, 16, 0x3C09);
    mxf_write_uuid(pb, Identification, 1);

    mxf_write_local_tag(pb, company_name_len, 0x3C01);
    put_buffer(pb, "FFmpeg", company_name_len);

    mxf_write_local_tag(pb, product_name_len, 0x3C02);
    put_buffer(pb, "OP1a Muxer", product_name_len);

    if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
        mxf_write_local_tag(pb, version_string_len, 0x3C04);
        put_buffer(pb, LIBAVFORMAT_IDENT, version_string_len);
    }

    // write product uid
    mxf_write_local_tag(pb, 16, 0x3C05);
    mxf_write_uuid(pb, Identification, 2);

    // write modified date
    mxf_write_local_tag(pb, 8, 0x3C06);
    put_be64(pb, 0);
}

static void mxf_write_content_storage(AVFormatContext *s)
{
    ByteIOContext *pb = s->pb;

    mxf_write_metadata_key(pb, 0x011800);
    PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
    klv_encode_ber_length(pb, 64);

    // write uid
    mxf_write_local_tag(pb, 16, 0x3C0A);
    mxf_write_uuid(pb, ContentStorage, 0);
    PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
    // write package reference
    mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
    mxf_write_refs_count(pb, 2);
    mxf_write_uuid(pb, MaterialPackage, 0);
    mxf_write_uuid(pb, SourcePackage, 0);
}

391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
{
    ByteIOContext *pb = s->pb;
    int i;

    if (type == MaterialPackage) {
        mxf_write_metadata_key(pb, 0x013600);
        PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
        klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
    }
    else {
        mxf_write_metadata_key(pb, 0x013700);
        PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
        klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
    }

    // write uid
    mxf_write_local_tag(pb, 16, 0x3C0A);
    mxf_write_uuid(pb, type, 0);
    av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
    PRINT_KEY(s, "package uid", pb->buf_ptr - 16);

    // write package umid
    mxf_write_local_tag(pb, 32, 0x4401);
    mxf_write_umid(pb, type, 0);
    PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
    // write create date
    mxf_write_local_tag(pb, 8, 0x4405);
    put_be64(pb, 0);

    // write modified date
    mxf_write_local_tag(pb, 8, 0x4404);
    put_be64(pb, 0);

    // write track refs
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
    mxf_write_refs_count(pb, s->nb_streams);
    for (i = 0; i < s->nb_streams; i++)
        mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);

    if (type == SourcePackage) {
        // write multiple descriptor reference
        mxf_write_local_tag(pb, 16, 0x4701);
        mxf_write_uuid(pb, MultipleDescriptor, 0);
    }
}

static void mxf_write_track(AVFormatContext *s, int stream_index, enum MXFMetadataSetType type, int *track_number_sign)
{
    ByteIOContext *pb = s->pb;
    AVStream *st;
    MXFStreamContext *sc;
    const MXFCodecUL *element;
    int i = 0;

    mxf_write_metadata_key(pb, 0x013b00);
    PRINT_KEY(s, "track key", pb->buf_ptr - 16);
    klv_encode_ber_length(pb, 80);

    st = s->streams[stream_index];
    sc = st->priv_data;

    // write track uid
    mxf_write_local_tag(pb, 16, 0x3C0A);
    mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, stream_index);
    PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
    // write track id
    mxf_write_local_tag(pb, 4, 0x4801);
    put_be32(pb, stream_index);

    mxf_write_local_tag(pb, 4, 0x4804);
    if (type != MaterialPackage) {
        for (element = mxf_essence_element_key; element->id != CODEC_ID_NONE; element++) {
            if (st->codec->codec_id== element->id) {
                // set essence_element key
                memcpy(sc->track_essence_element_key, element->uid, 16);
                sc->track_essence_element_key[15] += track_number_sign[i];
                // write track number
                put_buffer(pb, sc->track_essence_element_key + 12, 4);

                track_number_sign[i] ++;
                break;
            }
            i++;
        }
    } else {
        put_be32(pb, 0); // track number of material package is 0
    }

    mxf_write_local_tag(pb, 8, 0x4B01);
    put_be32(pb, st->time_base.den);
    put_be32(pb, st->time_base.num);

    // write origin
    mxf_write_local_tag(pb, 8, 0x4B02);
    put_be64(pb, 0);

    // write sequence refs
    mxf_write_local_tag(pb, 16, 0x4803);
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, stream_index);
}

493 494 495 496 497 498 499 500 501 502 503 504 505 506
static void mxf_write_common_fields(    ByteIOContext *pb, AVStream *st)
{
    const MXFDataDefinitionUL * data_def_ul;

    // find data define uls
    data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
    mxf_write_local_tag(pb, 16, 0x0201);
    put_buffer(pb, data_def_ul->uid, 16);

    // write duration
    mxf_write_local_tag(pb, 8, 0x0202);
    put_be64(pb, st->duration);
}

507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569
static void mxf_write_sequence(AVFormatContext *s, int stream_index, enum MXFMetadataSetType type)
{
    ByteIOContext *pb = s->pb;
    AVStream *st;

    mxf_write_metadata_key(pb, 0x010f00);
    PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
    klv_encode_ber_length(pb, 80);

    st = s->streams[stream_index];

    mxf_write_local_tag(pb, 16, 0x3C0A);
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, stream_index);

    PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
    mxf_write_common_fields(pb, st);

    // write structural component
    mxf_write_local_tag(pb, 16 + 8, 0x1001);
    mxf_write_refs_count(pb, 1);
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, stream_index);
}

static void mxf_write_structural_component(AVFormatContext *s, int stream_index, enum MXFMetadataSetType type)
{
    ByteIOContext *pb = s->pb;
    AVStream *st;
    int i;

    mxf_write_metadata_key(pb, 0x011100);
    PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
    klv_encode_ber_length(pb, 108);

    st = s->streams[stream_index];

    // write uid
    mxf_write_local_tag(pb, 16, 0x3C0A);
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, stream_index);

    PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
    mxf_write_common_fields(pb, st);

    // write start_position
    mxf_write_local_tag(pb, 8, 0x1201);
    put_be64(pb, 0);

    mxf_write_local_tag(pb, 32, 0x1101);
    if (type == SourcePackage) {
        // write source package uid, end of the reference
        for (i = 0; i < 4; i++) {
            put_be64(pb, 0);
        }
    } else
        mxf_write_umid(pb, SourcePackage, 0);

    mxf_write_local_tag(pb, 4, 0x1102);
    if (type == SourcePackage)
        // write source track id
        put_be32(pb, 0);
    else
        put_be32(pb, stream_index);
}

570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599
static void mxf_write_multi_descriptor(AVFormatContext *s)
{
    ByteIOContext *pb = s->pb;
    int i;

    mxf_write_metadata_key(pb, 0x014400);
    PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
    klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);

    mxf_write_local_tag(pb, 16, 0x3C0A);
    mxf_write_uuid(pb, MultipleDescriptor, 0);
    PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);

    // write sample rate
    mxf_write_local_tag(pb, 8, 0x3001);
    put_be32(pb, s->streams[0]->time_base.den);
    put_be32(pb, s->streams[0]->time_base.num);

    // write essence container ul
    mxf_write_local_tag(pb, 16, 0x3004);
    put_buffer(pb, multiple_desc_ul, 16);

    // write sub descriptor refs
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
    mxf_write_refs_count(pb, s->nb_streams);
    for (i = 0; i < s->nb_streams; i++) {
        mxf_write_uuid(pb, SubDescriptor, i);
    }
}

600 601 602 603 604
static void mxf_write_header_desc(ByteIOContext *pb, const MXFDescriptorWriteTableEntry *desc_tbl, AVStream *st)
{
    const MXFCodecUL *codec_ul;

    put_buffer(pb, desc_tbl->key, 16);
605
    klv_encode_ber_length(pb, 108);
606 607 608 609 610 611 612

    mxf_write_local_tag(pb, 16, 0x3C0A);
    mxf_write_uuid(pb, SubDescriptor, st->index);

    mxf_write_local_tag(pb, 4, 0x3006);
    put_be32(pb, st->index);

613 614 615 616
    mxf_write_local_tag(pb, 8, 0x3001);
    put_be32(pb, st->time_base.den);
    put_be32(pb, st->time_base.num);

617 618 619 620 621
    codec_ul = mxf_get_essence_container_ul(st->codec->codec_id);
    mxf_write_local_tag(pb, 16, 0x3004);
    put_buffer(pb, codec_ul->uid, 16);
}

622
static void mxf_write_mpeg_video_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index)
623 624 625 626 627 628 629 630 631 632 633 634 635 636
{
    ByteIOContext *pb = s->pb;
    AVStream *st;

    st = s->streams[stream_index];
    mxf_write_header_desc(pb, desc_tbl, st);

    mxf_write_local_tag(pb, 4, 0x3203);
    put_be32(pb, st->codec->width);

    mxf_write_local_tag(pb, 4, 0x3202);
    put_be32(pb, st->codec->height);

    mxf_write_local_tag(pb, 8, 0x320E);
637 638
    put_be32(pb, st->codec->height * st->sample_aspect_ratio.den);
    put_be32(pb, st->codec->width  * st->sample_aspect_ratio.num);
639 640 641 642 643 644

    // tmp write, will modified later
    mxf_write_local_tag(pb, 16, 0x3201);
    put_buffer(pb, ff_mxf_codec_uls->uid, 16);
}

645
static void mxf_write_wav_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index)
646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674
{
    ByteIOContext *pb = s->pb;
    AVStream *st;

    st = s->streams[stream_index];
    mxf_write_header_desc(pb, desc_tbl, st);

    // write audio sampling rate
    mxf_write_local_tag(pb, 8, 0x3D03);
    put_be32(pb, st->codec->sample_rate);
    put_be32(pb, 1);

    mxf_write_local_tag(pb, 4, 0x3D07);
    put_be32(pb, st->codec->channels);

    mxf_write_local_tag(pb, 4, 0x3D01);
    put_be32(pb, st->codec->bits_per_sample);

    // tmp write, will modified later
    mxf_write_local_tag(pb, 16, 0x3201);
    put_buffer(pb, (ff_mxf_codec_uls + 8) ->uid, 16);
}

static const MXFDescriptorWriteTableEntry mxf_descriptor_write_table[] = {
    { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_write_mpeg_video_desc, CODEC_ID_MPEG2VIDEO},
    { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_write_wav_desc, CODEC_ID_PCM_S16LE},
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, CODEC_ID_NONE},
};

675
static void mxf_build_structural_metadata(AVFormatContext *s, enum MXFMetadataSetType type)
676 677 678 679 680
{
    int i;
    const MXFDescriptorWriteTableEntry *desc = NULL;
    int track_number_sign[sizeof(mxf_essence_element_key)/sizeof(MXFCodecUL)] = { 0 };

681 682 683
    mxf_write_package(s, type);
    if (type == SourcePackage)
        mxf_write_multi_descriptor(s);
684 685

    for (i = 0;i < s->nb_streams; i++) {
686 687 688
        mxf_write_track(s, i, type, track_number_sign);
        mxf_write_sequence(s, i, type);
        mxf_write_structural_component(s, i, type);
689 690 691 692

        if (type == SourcePackage) {
            for (desc = mxf_descriptor_write_table; desc->write; desc++) {
                if (s->streams[i]->codec->codec_id == desc->type) {
693
                    desc->write(s, desc, i);
694 695 696 697 698 699 700
                    break;
                }
            }
        }
    }
}

701 702 703 704 705
static int mxf_write_header_metadata_sets(AVFormatContext *s)
{
    AVStream *st;
    MXFStreamContext *sc = NULL;
    int i;
706
    mxf_write_preface(s);
707

708
    mxf_write_identification(s);
709

710
    mxf_write_content_storage(s);
711 712 713 714 715 716 717 718 719 720 721 722 723 724 725

    for (i = 0; i < s->nb_streams; i++) {
        st = s->streams[i];
        sc = av_mallocz(sizeof(MXFStreamContext));
        if (!sc)
            return AVERROR(ENOMEM);
        st->priv_data = sc;
        // set pts information
        if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
            av_set_pts_info(st, 64, 1, st->codec->time_base.den);
        } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
        }
    }

726 727
    mxf_build_structural_metadata(s, MaterialPackage);
    mxf_build_structural_metadata(s, SourcePackage);
728 729 730
    return 0;
}

731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770
static void mxf_write_partition(AVFormatContext *s, int64_t byte_position, int bodysid, const uint8_t *key)
{
    MXFContext *mxf = s->priv_data;
    ByteIOContext *pb = s->pb;
    // write klv
    put_buffer(pb, key, 16);
    if (!mxf->essence_container_count)
        mxf->essence_container_count = mxf_write_essence_container_refs(s, 0);
    klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);

    // write partition value
    put_be16(pb, 1); // majorVersion
    put_be16(pb, 2); // minorVersion
    put_be32(pb, 1); // kagSize

    put_be64(pb, byte_position); // thisPartition
    put_be64(pb, 0); // previousPartition

    // set offset
    if (!byte_position)
        mxf->header_footer_partition_offset = url_ftell(pb);
    put_be64(pb, byte_position); // footerPartition,update later

    // set offset
    if (!byte_position)
        mxf->header_byte_count_offset = url_ftell(pb);
    put_be64(pb, 0); // headerByteCount, update later

    // no indexTable
    put_be64(pb, 0); // indexByteCount
    put_be32(pb, 0); // indexSID
    put_be64(pb, 0); // bodyOffset

    put_be32(pb, bodysid); // bodySID
    put_buffer(pb, op1a_ul, 16); // operational pattern

    // essence container
    mxf_write_essence_container_refs(s, 1);
}

771
static int mux_write_header(AVFormatContext *s)
772 773 774
{
    MXFContext *mxf = s->priv_data;
    ByteIOContext *pb = s->pb;
775 776 777 778 779 780 781 782 783 784 785 786
    int64_t header_metadata_start, offset_now;

    mxf_write_partition(s, 0, 1, header_partition_key);

    // mark the start of the headermetadata and calculate metadata size
    header_metadata_start = url_ftell(s->pb);
    mxf_write_primer_pack(s);
    if (mxf_write_header_metadata_sets(s) < 0)
        goto fail;
    offset_now = url_ftell(s->pb);
    mxf->header_byte_count = offset_now - header_metadata_start;
    // update header_byte_count
787 788
    url_fseek(pb, mxf->header_byte_count_offset, SEEK_SET);
    put_be64(pb, mxf->header_byte_count);
789 790
    url_fseek(pb, offset_now, SEEK_SET);

791
    put_flush_packet(pb);
792 793 794 795 796 797
    return 0;
fail:
    mxf_free(s);
    return -1;
}

798 799 800 801 802 803 804 805 806 807 808 809 810 811
static int mux_write_packet(AVFormatContext *s, AVPacket *pkt)
{
    ByteIOContext *pb = s->pb;
    AVStream *st = s->streams[pkt->stream_index];
    MXFStreamContext *sc = st->priv_data;

    put_buffer(pb, sc->track_essence_element_key, 16); // write key
    klv_encode_ber_length(pb, pkt->size); // write length
    put_buffer(pb, pkt->data, pkt->size); // write value

    put_flush_packet(pb);
    return 0;
}

812 813 814 815
static void mxf_update_header_partition(AVFormatContext *s, int64_t footer_partition_offset)
{
    MXFContext *mxf = s->priv_data;
    ByteIOContext *pb = s->pb;
816 817 818 819

    url_fseek(pb, mxf->header_footer_partition_offset, SEEK_SET);
    put_be64(pb, footer_partition_offset);
    put_flush_packet(pb);
820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835
}


static int mux_write_footer(AVFormatContext *s)
{
    ByteIOContext *pb = s->pb;

    int64_t byte_position= url_ftell(pb);
    if (!url_is_streamed(s->pb)) {
        mxf_write_partition(s, byte_position, 0, footer_partition_key);

        put_flush_packet(pb);

        mxf_update_header_partition(s, byte_position);
    }
    mxf_free(s);
836 837
    return 0;
}
838

839 840 841 842 843 844 845 846 847 848 849 850
AVOutputFormat mxf_muxer = {
    "mxf",
    NULL_IF_CONFIG_SMALL("Material eXchange Format"),
    NULL,
    "mxf",
    sizeof(MXFContext),
    CODEC_ID_PCM_S16LE,
    CODEC_ID_MPEG2VIDEO,
    mux_write_header,
    mux_write_packet,
    mux_write_footer,
};
851 852