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/*
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 * MXF muxer
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 * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
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 * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/*
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 * References
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 * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
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 * SMPTE 377M MXF File Format Specifications
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 * SMPTE 379M MXF Generic Container
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 * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
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 * SMPTE RP210: SMPTE Metadata Dictionary
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 * SMPTE RP224: Registry of SMPTE Universal Labels
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 */
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//#define DEBUG
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#include <math.h>
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#include <time.h>
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#include "libavutil/fifo.h"
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#include "libavcodec/bytestream.h"
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#include "audiointerleave.h"
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#include "avformat.h"
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#include "mxf.h"
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static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
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static const int PAL_samples_per_frame[]  = { 1920, 0 };
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AVOutputFormat mxf_d10_muxer;
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#define EDIT_UNITS_PER_BODY 250
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#define KAG_SIZE 512
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typedef struct {
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    int local_tag;
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    UID uid;
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} MXFLocalTagPair;
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typedef struct {
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    uint8_t flags;
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    uint64_t offset;
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    unsigned slice_offset; ///< offset of audio slice
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} MXFIndexEntry;
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typedef struct {
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    AudioInterleaveContext aic;
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    UID track_essence_element_key;
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    int index;            ///< index in mxf_essence_container_uls table
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    const UID *codec_ul;
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    int order;            ///< interleaving order if dts are equal
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    int interlaced;       ///< wether picture is interlaced
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    int temporal_reordering;
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    AVRational aspect_ratio; ///< display aspect ratio
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} MXFStreamContext;
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typedef struct {
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    UID container_ul;
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    UID element_ul;
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    UID codec_ul;
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    void (*write_desc)();
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} MXFContainerEssenceEntry;
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static const struct {
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    enum CodecID id;
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    int index;
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} mxf_essence_mappings[] = {
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    { CODEC_ID_MPEG2VIDEO, 0 },
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    { CODEC_ID_PCM_S24LE,  1 },
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    { CODEC_ID_PCM_S16LE,  1 },
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    { 0 }
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};
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static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
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static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
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static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
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static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
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static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
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static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
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      mxf_write_mpegvideo_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_aes3_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_wav_desc },
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    // D-10 625/50 PAL 50mb/s
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
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      mxf_write_cdci_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    // D-10 525/60 NTSC 50mb/s
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
122
      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
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      mxf_write_cdci_desc },
124
    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    // D-10 625/50 PAL 40mb/s
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
130
      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
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      mxf_write_cdci_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    // D-10 525/60 NTSC 40mb/s
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
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      mxf_write_cdci_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    // D-10 625/50 PAL 30mb/s
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
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      mxf_write_cdci_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    // D-10 525/60 NTSC 30mb/s
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
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      mxf_write_cdci_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
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      { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
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      { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
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      NULL },
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};
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typedef struct MXFContext {
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    int64_t footer_partition_offset;
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    int essence_container_count;
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    AVRational time_base;
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    int header_written;
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    MXFIndexEntry *index_entries;
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    unsigned edit_units_count;
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    uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
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    uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
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    int last_indexed_edit_unit;
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    uint64_t *body_partition_offset;
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    unsigned body_partitions_count;
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    int last_key_index;  ///< index of last key frame
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    uint64_t duration;
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    AVStream *timecode_track;
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    int timecode_base;       ///< rounded time code base (25 or 30)
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    int timecode_start;      ///< frame number computed from mpeg-2 gop header timecode
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    int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
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    int edit_unit_byte_count; ///< fixed edit unit byte count
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    uint64_t body_offset;
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} MXFContext;
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static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
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static const uint8_t umid_base[]            = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
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195
/**
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 * complete key for operation pattern, partitions, and primer pack
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 */
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static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
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static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
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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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static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
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static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
203
static const uint8_t header_open_partition_key[]   = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }; // OpenIncomplete
204
static const uint8_t header_closed_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete
205
static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
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static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
207

    
208
/**
209
 * partial key for header metadata
210
 */
211
static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
212
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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214
/**
215
 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
216
 */
217
static const MXFLocalTagPair mxf_local_tag_batch[] = {
218
    // preface set
219
    { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
220
    { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
221
    { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
222
    { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
223
    { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
224
    { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
225
    { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
226
    { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
227
    // Identification
228
    { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
229
    { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
230
    { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
231
    { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
232
    { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
233
    { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
234
    // Content Storage
235
    { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
236
    { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
237
    // Essence Container Data
238
    { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
239
    { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
240
    // Package
241
    { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
242
    { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
243
    { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
244
    { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
245
    { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
246
    // Track
247
    { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
248
    { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
249
    { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
250
    { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
251
    { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
252
    // Sequence
253
    { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
254
    { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
255
    { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
256
    // Source Clip
257
    { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
258
    { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
259
    { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
260
    // Timecode Component
261
    { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
262
    { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
263
    { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
264
    // File Descriptor
265
    { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
266
    { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
267
    { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
268
    { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
269
    // Generic Picture Essence Descriptor
270
    { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
271
    { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
272
    { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
273
    { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
274
    { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
275
    { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
276
    { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
277
    { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
278
    // CDCI Picture Essence Descriptor
279
    { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
280
    { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
281
    // Generic Sound Essence Descriptor
282
    { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
283
    { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
284
    { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
285
    { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
286
    { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
287
    // Index Table Segment
288
    { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
289
    { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
290
    { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
291
    { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
292
    { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
293
    { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
294
    { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
295
    { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
296
    // MPEG video Descriptor
297
    { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
298
    // Wave Audio Essence Descriptor
299
    { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
300
    { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
301
};
302

    
303
static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
304
{
305
    put_buffer(pb, uuid_base, 12);
306
    put_be16(pb, type);
307
    put_be16(pb, value);
308
}
309

    
310
static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
311
{
312
    put_buffer(pb, umid_base, 16);
313
    mxf_write_uuid(pb, type, value);
314
}
315

    
316
static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
317
{
318
    put_be32(pb, ref_count);
319
    put_be32(pb, 16);
320
}
321

    
322
static int klv_ber_length(uint64_t len)
323
{
324
    if (len < 128)
325
        return 1;
326
    else
327
        return (av_log2(len) >> 3) + 2;
328
}
329

    
330
static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
331
{
332
    // Determine the best BER size
333
    int size;
334
    if (len < 128) {
335
        //short form
336
        put_byte(pb, len);
337
        return 1;
338
    }
339

    
340
    size = (av_log2(len) >> 3) + 1;
341

    
342
    // long form
343
    put_byte(pb, 0x80 + size);
344
    while(size) {
345
        size--;
346
        put_byte(pb, len >> 8 * size & 0xff);
347
    }
348
    return 0;
349
}
350

    
351
static void klv_encode_ber4_length(ByteIOContext *pb, int len)
352
{
353
    put_byte(pb, 0x80 + 3);
354
    put_be24(pb, len);
355
}
356

    
357
/*
358
 * Get essence container ul index
359
 */
360
static int mxf_get_essence_container_ul_index(enum CodecID id)
361
{
362
    int i;
363
    for (i = 0; mxf_essence_mappings[i].id; i++)
364
        if (mxf_essence_mappings[i].id == id)
365
            return mxf_essence_mappings[i].index;
366
    return -1;
367
}
368

    
369
static void mxf_write_primer_pack(AVFormatContext *s)
370
{
371
    ByteIOContext *pb = s->pb;
372
    int local_tag_number, i = 0;
373

    
374
    local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
375

    
376
    put_buffer(pb, primer_pack_key, 16);
377
    klv_encode_ber_length(pb, local_tag_number * 18 + 8);
378

    
379
    put_be32(pb, local_tag_number); // local_tag num
380
    put_be32(pb, 18); // item size, always 18 according to the specs
381

    
382
    for (i = 0; i < local_tag_number; i++) {
383
        put_be16(pb, mxf_local_tag_batch[i].local_tag);
384
        put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
385
    }
386
}
387

    
388
static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
389
{
390
    put_be16(pb, tag);
391
    put_be16(pb, size);
392
}
393

    
394
static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
395
{
396
    put_buffer(pb, header_metadata_key, 13);
397
    put_be24(pb, value);
398
}
399

    
400
static void mxf_free(AVFormatContext *s)
401
{
402
    int i;
403

    
404
    for (i = 0; i < s->nb_streams; i++) {
405
        AVStream *st = s->streams[i];
406
        av_freep(&st->priv_data);
407
    }
408
}
409

    
410
static const MXFCodecUL *mxf_get_data_definition_ul(int type)
411
{
412
    const MXFCodecUL *uls = ff_mxf_data_definition_uls;
413
    while (uls->uid[0]) {
414
        if (type == uls->id)
415
            break;
416
        uls++;
417
    }
418
    return uls;
419
}
420

    
421
static void mxf_write_essence_container_refs(AVFormatContext *s)
422
{
423
    MXFContext *c = s->priv_data;
424
    ByteIOContext *pb = s->pb;
425
    int i;
426

    
427
    mxf_write_refs_count(pb, c->essence_container_count);
428
    av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
429
    for (i = 0; i < c->essence_container_count; i++) {
430
        MXFStreamContext *sc = s->streams[i]->priv_data;
431
        put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
432
    }
433
}
434

    
435
static void mxf_write_preface(AVFormatContext *s)
436
{
437
    MXFContext *mxf = s->priv_data;
438
    ByteIOContext *pb = s->pb;
439

    
440
    mxf_write_metadata_key(pb, 0x012f00);
441
    PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
442
    klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
443

    
444
    // write preface set uid
445
    mxf_write_local_tag(pb, 16, 0x3C0A);
446
    mxf_write_uuid(pb, Preface, 0);
447
    PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
448

    
449
    // last modified date
450
    mxf_write_local_tag(pb, 8, 0x3B02);
451
    put_be64(pb, mxf->timestamp);
452

    
453
    // write version
454
    mxf_write_local_tag(pb, 2, 0x3B05);
455
    put_be16(pb, 1);
456

    
457
    // write identification_refs
458
    mxf_write_local_tag(pb, 16 + 8, 0x3B06);
459
    mxf_write_refs_count(pb, 1);
460
    mxf_write_uuid(pb, Identification, 0);
461

    
462
    // write content_storage_refs
463
    mxf_write_local_tag(pb, 16, 0x3B03);
464
    mxf_write_uuid(pb, ContentStorage, 0);
465

    
466
    // operational pattern
467
    mxf_write_local_tag(pb, 16, 0x3B09);
468
    if (s->nb_streams > 1) {
469
        put_buffer(pb, op1a_ul, 14);
470
        put_be16(pb, 0x0900); // multi track
471
    } else {
472
        put_buffer(pb, op1a_ul, 16);
473
    }
474

    
475
    // write essence_container_refs
476
    mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
477
    mxf_write_essence_container_refs(s);
478

    
479
    // write dm_scheme_refs
480
    mxf_write_local_tag(pb, 8, 0x3B0B);
481
    put_be64(pb, 0);
482
}
483

    
484
/*
485
 * Write a local tag containing an ascii string as utf-16
486
 */
487
static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
488
{
489
    int i, size = strlen(value);
490
    mxf_write_local_tag(pb, size*2, tag);
491
    for (i = 0; i < size; i++)
492
        put_be16(pb, value[i]);
493
}
494

    
495
static void mxf_write_identification(AVFormatContext *s)
496
{
497
    MXFContext *mxf = s->priv_data;
498
    ByteIOContext *pb = s->pb;
499
    const char *company = "FFmpeg";
500
    const char *product = "OP1a Muxer";
501
    const char *version;
502
    int length;
503

    
504
    mxf_write_metadata_key(pb, 0x013000);
505
    PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
506

    
507
    version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
508
        "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
509
    length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
510
    klv_encode_ber_length(pb, length);
511

    
512
    // write uid
513
    mxf_write_local_tag(pb, 16, 0x3C0A);
514
    mxf_write_uuid(pb, Identification, 0);
515
    PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
516

    
517
    // write generation uid
518
    mxf_write_local_tag(pb, 16, 0x3C09);
519
    mxf_write_uuid(pb, Identification, 1);
520

    
521
    mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
522
    mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
523
    mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
524

    
525
    // write product uid
526
    mxf_write_local_tag(pb, 16, 0x3C05);
527
    mxf_write_uuid(pb, Identification, 2);
528

    
529
    // modification date
530
    mxf_write_local_tag(pb, 8, 0x3C06);
531
    put_be64(pb, mxf->timestamp);
532
}
533

    
534
static void mxf_write_content_storage(AVFormatContext *s)
535
{
536
    ByteIOContext *pb = s->pb;
537

    
538
    mxf_write_metadata_key(pb, 0x011800);
539
    PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
540
    klv_encode_ber_length(pb, 92);
541

    
542
    // write uid
543
    mxf_write_local_tag(pb, 16, 0x3C0A);
544
    mxf_write_uuid(pb, ContentStorage, 0);
545
    PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
546

    
547
    // write package reference
548
    mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
549
    mxf_write_refs_count(pb, 2);
550
    mxf_write_uuid(pb, MaterialPackage, 0);
551
    mxf_write_uuid(pb, SourcePackage, 0);
552

    
553
    // write essence container data
554
    mxf_write_local_tag(pb, 8 + 16, 0x1902);
555
    mxf_write_refs_count(pb, 1);
556
    mxf_write_uuid(pb, EssenceContainerData, 0);
557
}
558

    
559
static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
560
{
561
    MXFContext *mxf = s->priv_data;
562
    ByteIOContext *pb = s->pb;
563
    MXFStreamContext *sc = st->priv_data;
564

    
565
    mxf_write_metadata_key(pb, 0x013b00);
566
    PRINT_KEY(s, "track key", pb->buf_ptr - 16);
567
    klv_encode_ber_length(pb, 80);
568

    
569
    // write track uid
570
    mxf_write_local_tag(pb, 16, 0x3C0A);
571
    mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
572
    PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
573

    
574
    // write track id
575
    mxf_write_local_tag(pb, 4, 0x4801);
576
    put_be32(pb, st->index+1);
577

    
578
    // write track number
579
    mxf_write_local_tag(pb, 4, 0x4804);
580
    if (type == MaterialPackage)
581
        put_be32(pb, 0); // track number of material package is 0
582
    else
583
        put_buffer(pb, sc->track_essence_element_key + 12, 4);
584

    
585
    mxf_write_local_tag(pb, 8, 0x4B01);
586
    put_be32(pb, mxf->time_base.den);
587
    put_be32(pb, mxf->time_base.num);
588

    
589
    // write origin
590
    mxf_write_local_tag(pb, 8, 0x4B02);
591
    put_be64(pb, 0);
592

    
593
    // write sequence refs
594
    mxf_write_local_tag(pb, 16, 0x4803);
595
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
596
}
597

    
598
static const uint8_t smpte_12m_timecode_track_data_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x01,0x01,0x00,0x00,0x00 };
599

    
600
static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
601
{
602
    MXFContext *mxf = s->priv_data;
603
    ByteIOContext *pb = s->pb;
604

    
605
    // find data define uls
606
    mxf_write_local_tag(pb, 16, 0x0201);
607
    if (st == mxf->timecode_track)
608
        put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
609
    else {
610
        const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
611
        put_buffer(pb, data_def_ul->uid, 16);
612
    }
613

    
614
    // write duration
615
    mxf_write_local_tag(pb, 8, 0x0202);
616
    put_be64(pb, mxf->duration);
617
}
618

    
619
static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
620
{
621
    MXFContext *mxf = s->priv_data;
622
    ByteIOContext *pb = s->pb;
623
    enum MXFMetadataSetType component;
624

    
625
    mxf_write_metadata_key(pb, 0x010f00);
626
    PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
627
    klv_encode_ber_length(pb, 80);
628

    
629
    mxf_write_local_tag(pb, 16, 0x3C0A);
630
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
631

    
632
    PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
633
    mxf_write_common_fields(s, st);
634

    
635
    // write structural component
636
    mxf_write_local_tag(pb, 16 + 8, 0x1001);
637
    mxf_write_refs_count(pb, 1);
638
    if (st == mxf->timecode_track)
639
        component = TimecodeComponent;
640
    else
641
        component = SourceClip;
642
    if (type == SourcePackage)
643
        component += TypeBottom;
644
    mxf_write_uuid(pb, component, st->index);
645
}
646

    
647
static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
648
{
649
    MXFContext *mxf = s->priv_data;
650
    ByteIOContext *pb = s->pb;
651

    
652
    mxf_write_metadata_key(pb, 0x011400);
653
    klv_encode_ber_length(pb, 75);
654

    
655
    // UID
656
    mxf_write_local_tag(pb, 16, 0x3C0A);
657
    mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
658
                   TimecodeComponent + TypeBottom, st->index);
659

    
660
    mxf_write_common_fields(s, st);
661

    
662
    // Start Time Code
663
    mxf_write_local_tag(pb, 8, 0x1501);
664
    put_be64(pb, mxf->timecode_start);
665

    
666
    // Rounded Time Code Base
667
    mxf_write_local_tag(pb, 2, 0x1502);
668
    put_be16(pb, mxf->timecode_base);
669

    
670
    // Drop Frame
671
    mxf_write_local_tag(pb, 1, 0x1503);
672
    put_byte(pb, mxf->timecode_drop_frame);
673
}
674

    
675
static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
676
{
677
    ByteIOContext *pb = s->pb;
678
    int i;
679

    
680
    mxf_write_metadata_key(pb, 0x011100);
681
    PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
682
    klv_encode_ber_length(pb, 108);
683

    
684
    // write uid
685
    mxf_write_local_tag(pb, 16, 0x3C0A);
686
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
687

    
688
    PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
689
    mxf_write_common_fields(s, st);
690

    
691
    // write start_position
692
    mxf_write_local_tag(pb, 8, 0x1201);
693
    put_be64(pb, 0);
694

    
695
    // write source package uid, end of the reference
696
    mxf_write_local_tag(pb, 32, 0x1101);
697
    if (type == SourcePackage) {
698
        for (i = 0; i < 4; i++)
699
            put_be64(pb, 0);
700
    } else
701
        mxf_write_umid(pb, SourcePackage, 0);
702

    
703
    // write source track id
704
    mxf_write_local_tag(pb, 4, 0x1102);
705
    if (type == SourcePackage)
706
        put_be32(pb, 0);
707
    else
708
        put_be32(pb, st->index+1);
709
}
710

    
711
static void mxf_write_multi_descriptor(AVFormatContext *s)
712
{
713
    MXFContext *mxf = s->priv_data;
714
    ByteIOContext *pb = s->pb;
715
    const uint8_t *ul;
716
    int i;
717

    
718
    mxf_write_metadata_key(pb, 0x014400);
719
    PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
720
    klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
721

    
722
    mxf_write_local_tag(pb, 16, 0x3C0A);
723
    mxf_write_uuid(pb, MultipleDescriptor, 0);
724
    PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
725

    
726
    // write sample rate
727
    mxf_write_local_tag(pb, 8, 0x3001);
728
    put_be32(pb, mxf->time_base.den);
729
    put_be32(pb, mxf->time_base.num);
730

    
731
    // write essence container ul
732
    mxf_write_local_tag(pb, 16, 0x3004);
733
    if (mxf->essence_container_count > 1)
734
        ul = multiple_desc_ul;
735
    else {
736
        MXFStreamContext *sc = s->streams[0]->priv_data;
737
        ul = mxf_essence_container_uls[sc->index].container_ul;
738
    }
739
    put_buffer(pb, ul, 16);
740

    
741
    // write sub descriptor refs
742
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
743
    mxf_write_refs_count(pb, s->nb_streams);
744
    for (i = 0; i < s->nb_streams; i++)
745
        mxf_write_uuid(pb, SubDescriptor, i);
746
}
747

    
748
static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
749
{
750
    MXFContext *mxf = s->priv_data;
751
    MXFStreamContext *sc = st->priv_data;
752
    ByteIOContext *pb = s->pb;
753

    
754
    put_buffer(pb, key, 16);
755
    klv_encode_ber_length(pb, size+20+8+12+20);
756

    
757
    mxf_write_local_tag(pb, 16, 0x3C0A);
758
    mxf_write_uuid(pb, SubDescriptor, st->index);
759

    
760
    mxf_write_local_tag(pb, 4, 0x3006);
761
    put_be32(pb, st->index+1);
762

    
763
    mxf_write_local_tag(pb, 8, 0x3001);
764
    put_be32(pb, mxf->time_base.den);
765
    put_be32(pb, mxf->time_base.num);
766

    
767
    mxf_write_local_tag(pb, 16, 0x3004);
768
    put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
769
}
770

    
771
static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
772
static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
773
static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
774
static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
775
static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
776

    
777
static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
778
{
779
    MXFStreamContext *sc = st->priv_data;
780
    ByteIOContext *pb = s->pb;
781
    int stored_height = (st->codec->height+15)/16*16;
782
    int display_height;
783
    int f1, f2;
784

    
785
    mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
786

    
787
    mxf_write_local_tag(pb, 4, 0x3203);
788
    put_be32(pb, st->codec->width);
789

    
790
    mxf_write_local_tag(pb, 4, 0x3202);
791
    put_be32(pb, stored_height>>sc->interlaced);
792

    
793
    mxf_write_local_tag(pb, 4, 0x3209);
794
    put_be32(pb, st->codec->width);
795

    
796
    if (st->codec->height == 608) // PAL + VBI
797
        display_height = 576;
798
    else if (st->codec->height == 512)  // NTSC + VBI
799
        display_height = 486;
800
    else
801
        display_height = st->codec->height;
802

    
803
    mxf_write_local_tag(pb, 4, 0x3208);
804
    put_be32(pb, display_height>>sc->interlaced);
805

    
806
    // component depth
807
    mxf_write_local_tag(pb, 4, 0x3301);
808
    put_be32(pb, 8);
809

    
810
    // horizontal subsampling
811
    mxf_write_local_tag(pb, 4, 0x3302);
812
    put_be32(pb, 2);
813

    
814
    // frame layout
815
    mxf_write_local_tag(pb, 1, 0x320C);
816
    put_byte(pb, sc->interlaced);
817

    
818
    // video line map
819
    switch (st->codec->height) {
820
    case  576: f1 = 23; f2 = 336; break;
821
    case  608: f1 =  7; f2 = 320; break;
822
    case  480: f1 = 20; f2 = 283; break;
823
    case  512: f1 =  7; f2 = 270; break;
824
    case  720: f1 = 26; f2 =   0; break; // progressive
825
    case 1080: f1 = 21; f2 = 584; break;
826
    default:   f1 =  0; f2 =   0; break;
827
    }
828

    
829
    if (!sc->interlaced) {
830
        f2  = 0;
831
        f1 *= 2;
832
    }
833

    
834
    mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
835
    put_be32(pb, sc->interlaced ? 2 : 1);
836
    put_be32(pb, 4);
837
    put_be32(pb, f1);
838
    if (sc->interlaced)
839
        put_be32(pb, f2);
840

    
841
    mxf_write_local_tag(pb, 8, 0x320E);
842
    put_be32(pb, sc->aspect_ratio.num);
843
    put_be32(pb, sc->aspect_ratio.den);
844

    
845
    mxf_write_local_tag(pb, 16, 0x3201);
846
    put_buffer(pb, *sc->codec_ul, 16);
847
}
848

    
849
static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
850
{
851
    mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
852
}
853

    
854
static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
855
{
856
    ByteIOContext *pb = s->pb;
857

    
858
    mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8);
859

    
860
    // bit rate
861
    mxf_write_local_tag(pb, 4, 0x8000);
862
    put_be32(pb, st->codec->bit_rate);
863
}
864

    
865
static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
866
{
867
    ByteIOContext *pb = s->pb;
868

    
869
    mxf_write_generic_desc(s, st, key, size+5+12+8+8);
870

    
871
    // audio locked
872
    mxf_write_local_tag(pb, 1, 0x3D02);
873
    put_byte(pb, 1);
874

    
875
    // write audio sampling rate
876
    mxf_write_local_tag(pb, 8, 0x3D03);
877
    put_be32(pb, st->codec->sample_rate);
878
    put_be32(pb, 1);
879

    
880
    mxf_write_local_tag(pb, 4, 0x3D07);
881
    put_be32(pb, st->codec->channels);
882

    
883
    mxf_write_local_tag(pb, 4, 0x3D01);
884
    put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
885
}
886

    
887
static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
888
{
889
    ByteIOContext *pb = s->pb;
890

    
891
    mxf_write_generic_sound_common(s, st, key, size+6+8);
892

    
893
    mxf_write_local_tag(pb, 2, 0x3D0A);
894
    put_be16(pb, st->codec->block_align);
895

    
896
    // avg bytes per sec
897
    mxf_write_local_tag(pb, 4, 0x3D09);
898
    put_be32(pb, st->codec->block_align*st->codec->sample_rate);
899
}
900

    
901
static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
902
{
903
    mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
904
}
905

    
906
static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
907
{
908
    mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
909
}
910

    
911
static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
912
{
913
    mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
914
}
915

    
916
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
917
{
918
    MXFContext *mxf = s->priv_data;
919
    ByteIOContext *pb = s->pb;
920
    int i, track_count = s->nb_streams+1;
921

    
922
    if (type == MaterialPackage) {
923
        mxf_write_metadata_key(pb, 0x013600);
924
        PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
925
        klv_encode_ber_length(pb, 92 + 16*track_count);
926
    } else {
927
        mxf_write_metadata_key(pb, 0x013700);
928
        PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
929
        klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
930
    }
931

    
932
    // write uid
933
    mxf_write_local_tag(pb, 16, 0x3C0A);
934
    mxf_write_uuid(pb, type, 0);
935
    av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
936
    PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
937

    
938
    // write package umid
939
    mxf_write_local_tag(pb, 32, 0x4401);
940
    mxf_write_umid(pb, type, 0);
941
    PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
942

    
943
    // package creation date
944
    mxf_write_local_tag(pb, 8, 0x4405);
945
    put_be64(pb, mxf->timestamp);
946

    
947
    // package modified date
948
    mxf_write_local_tag(pb, 8, 0x4404);
949
    put_be64(pb, mxf->timestamp);
950

    
951
    // write track refs
952
    mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
953
    mxf_write_refs_count(pb, track_count);
954
    mxf_write_uuid(pb, type == MaterialPackage ? Track :
955
                   Track + TypeBottom, -1); // timecode track
956
    for (i = 0; i < s->nb_streams; i++)
957
        mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
958

    
959
    // write multiple descriptor reference
960
    if (type == SourcePackage) {
961
        mxf_write_local_tag(pb, 16, 0x4701);
962
        if (s->nb_streams > 1) {
963
            mxf_write_uuid(pb, MultipleDescriptor, 0);
964
            mxf_write_multi_descriptor(s);
965
        } else
966
            mxf_write_uuid(pb, SubDescriptor, 0);
967
    }
968

    
969
    // write timecode track
970
    mxf_write_track(s, mxf->timecode_track, type);
971
    mxf_write_sequence(s, mxf->timecode_track, type);
972
    mxf_write_timecode_component(s, mxf->timecode_track, type);
973

    
974
    for (i = 0; i < s->nb_streams; i++) {
975
        AVStream *st = s->streams[i];
976
        mxf_write_track(s, st, type);
977
        mxf_write_sequence(s, st, type);
978
        mxf_write_structural_component(s, st, type);
979

    
980
        if (type == SourcePackage) {
981
            MXFStreamContext *sc = st->priv_data;
982
            mxf_essence_container_uls[sc->index].write_desc(s, st);
983
        }
984
    }
985
}
986

    
987
static int mxf_write_essence_container_data(AVFormatContext *s)
988
{
989
    ByteIOContext *pb = s->pb;
990

    
991
    mxf_write_metadata_key(pb, 0x012300);
992
    klv_encode_ber_length(pb, 72);
993

    
994
    mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
995
    mxf_write_uuid(pb, EssenceContainerData, 0);
996

    
997
    mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
998
    mxf_write_umid(pb, SourcePackage, 0);
999

    
1000
    mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1001
    put_be32(pb, 1);
1002

    
1003
    mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1004
    put_be32(pb, 2);
1005

    
1006
    return 0;
1007
}
1008

    
1009
static int mxf_write_header_metadata_sets(AVFormatContext *s)
1010
{
1011
    mxf_write_preface(s);
1012
    mxf_write_identification(s);
1013
    mxf_write_content_storage(s);
1014
    mxf_write_package(s, MaterialPackage);
1015
    mxf_write_package(s, SourcePackage);
1016
    mxf_write_essence_container_data(s);
1017
    return 0;
1018
}
1019

    
1020
static unsigned klv_fill_size(uint64_t size)
1021
{
1022
    unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1023
    if (pad < 20) // smallest fill item possible
1024
        return pad + KAG_SIZE;
1025
    else
1026
        return pad & (KAG_SIZE-1);
1027
}
1028

    
1029
static void mxf_write_index_table_segment(AVFormatContext *s)
1030
{
1031
    MXFContext *mxf = s->priv_data;
1032
    ByteIOContext *pb = s->pb;
1033
    int i, j;
1034
    int temporal_reordering = 0;
1035
    int key_index = mxf->last_key_index;
1036

    
1037
    av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1038

    
1039
    if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1040
        return;
1041

    
1042
    put_buffer(pb, index_table_segment_key, 16);
1043

    
1044
    if (mxf->edit_unit_byte_count) {
1045
        klv_encode_ber_length(pb, 80);
1046
    } else {
1047
        klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1048
                              12+mxf->edit_units_count*(11+mxf->slice_count*4));
1049
    }
1050

    
1051
    // instance id
1052
    mxf_write_local_tag(pb, 16, 0x3C0A);
1053
    mxf_write_uuid(pb, IndexTableSegment, 0);
1054

    
1055
    // index edit rate
1056
    mxf_write_local_tag(pb, 8, 0x3F0B);
1057
    put_be32(pb, mxf->time_base.num);
1058
    put_be32(pb, mxf->time_base.den);
1059

    
1060
    // index start position
1061
    mxf_write_local_tag(pb, 8, 0x3F0C);
1062
    put_be64(pb, mxf->last_indexed_edit_unit);
1063

    
1064
    // index duration
1065
    mxf_write_local_tag(pb, 8, 0x3F0D);
1066
    put_be64(pb, mxf->edit_units_count);
1067

    
1068
    // edit unit byte count
1069
    mxf_write_local_tag(pb, 4, 0x3F05);
1070
    put_be32(pb, mxf->edit_unit_byte_count);
1071

    
1072
    // index sid
1073
    mxf_write_local_tag(pb, 4, 0x3F06);
1074
    put_be32(pb, 2);
1075

    
1076
    // body sid
1077
    mxf_write_local_tag(pb, 4, 0x3F07);
1078
    put_be32(pb, 1);
1079

    
1080
    if (!mxf->edit_unit_byte_count) {
1081
        // real slice count - 1
1082
        mxf_write_local_tag(pb, 1, 0x3F08);
1083
        put_byte(pb, mxf->slice_count);
1084

    
1085
        // delta entry array
1086
        mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1087
        put_be32(pb, s->nb_streams+1); // num of entries
1088
        put_be32(pb, 6);               // size of one entry
1089
        // write system item delta entry
1090
        put_byte(pb, 0);
1091
        put_byte(pb, 0); // slice entry
1092
        put_be32(pb, 0); // element delta
1093
        for (i = 0; i < s->nb_streams; i++) {
1094
            AVStream *st = s->streams[i];
1095
            MXFStreamContext *sc = st->priv_data;
1096
            put_byte(pb, sc->temporal_reordering);
1097
            if (sc->temporal_reordering)
1098
                temporal_reordering = 1;
1099
            if (i == 0) { // video track
1100
                put_byte(pb, 0); // slice number
1101
                put_be32(pb, KAG_SIZE); // system item size including klv fill
1102
            } else { // audio track
1103
                unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1104
                audio_frame_size += klv_fill_size(audio_frame_size);
1105
                put_byte(pb, 1);
1106
                put_be32(pb, (i-1)*audio_frame_size); // element delta
1107
            }
1108
        }
1109

    
1110
        mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1111
        put_be32(pb, mxf->edit_units_count);  // num of entries
1112
        put_be32(pb, 11+mxf->slice_count*4);  // size of one entry
1113
        for (i = 0; i < mxf->edit_units_count; i++) {
1114
            if (temporal_reordering) {
1115
                int temporal_offset = 0;
1116
                for (j = i+1; j < mxf->edit_units_count; j++) {
1117
                    temporal_offset++;
1118
                    if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1119
                        // next is not b, so is reordered
1120
                        if (!(mxf->index_entries[i+1].flags & 0x10)) {
1121
                            if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
1122
                                temporal_offset = 0;
1123
                            else
1124
                                temporal_offset = -temporal_offset;
1125
                        }
1126
                        break;
1127
                    }
1128
                }
1129
                put_byte(pb, temporal_offset);
1130
            } else
1131
                put_byte(pb, 0);
1132
            if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1133
                mxf->last_key_index = key_index;
1134
                key_index = i;
1135
            }
1136
            if (mxf->index_entries[i].flags & 0x10 && // backward prediction
1137
                !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
1138
                put_byte(pb, mxf->last_key_index - i);
1139
            } else {
1140
                put_byte(pb, key_index - i); // key frame offset
1141
                if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1142
                    mxf->last_key_index = key_index;
1143
            }
1144
            put_byte(pb, mxf->index_entries[i].flags);
1145
            // stream offset
1146
            put_be64(pb, mxf->index_entries[i].offset);
1147
            if (s->nb_streams > 1)
1148
                put_be32(pb, mxf->index_entries[i].slice_offset);
1149
        }
1150

    
1151
        mxf->last_key_index = key_index - mxf->edit_units_count;
1152
        mxf->last_indexed_edit_unit += mxf->edit_units_count;
1153
        mxf->edit_units_count = 0;
1154
    }
1155
}
1156

    
1157
static void mxf_write_klv_fill(AVFormatContext *s)
1158
{
1159
    unsigned pad = klv_fill_size(url_ftell(s->pb));
1160
    if (pad) {
1161
        put_buffer(s->pb, klv_fill_key, 16);
1162
        pad -= 16 + 4;
1163
        klv_encode_ber4_length(s->pb, pad);
1164
        for (; pad; pad--)
1165
            put_byte(s->pb, 0);
1166
        assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1167
    }
1168
}
1169

    
1170
static void mxf_write_partition(AVFormatContext *s, int bodysid,
1171
                                int indexsid,
1172
                                const uint8_t *key, int write_metadata)
1173
{
1174
    MXFContext *mxf = s->priv_data;
1175
    ByteIOContext *pb = s->pb;
1176
    int64_t header_byte_count_offset;
1177
    unsigned index_byte_count = 0;
1178
    uint64_t partition_offset = url_ftell(pb);
1179

    
1180
    if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1181
        index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1182
            12+mxf->edit_units_count*(11+mxf->slice_count*4);
1183
    else if (mxf->edit_unit_byte_count && indexsid)
1184
        index_byte_count = 85;
1185

    
1186
    if (index_byte_count) {
1187
        // add encoded ber length
1188
        index_byte_count += 16 + klv_ber_length(index_byte_count);
1189
        index_byte_count += klv_fill_size(index_byte_count);
1190
    }
1191

    
1192
    if (!memcmp(key, body_partition_key, 16)) {
1193
        mxf->body_partition_offset =
1194
            av_realloc(mxf->body_partition_offset,
1195
                       (mxf->body_partitions_count+1)*
1196
                       sizeof(*mxf->body_partition_offset));
1197
        mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1198
    }
1199

    
1200
    // write klv
1201
    put_buffer(pb, key, 16);
1202
    klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1203

    
1204
    // write partition value
1205
    put_be16(pb, 1); // majorVersion
1206
    put_be16(pb, 2); // minorVersion
1207
    put_be32(pb, KAG_SIZE); // KAGSize
1208

    
1209
    put_be64(pb, partition_offset); // ThisPartition
1210

    
1211
    if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1212
        put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1213
    else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1214
        put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1215
    else
1216
        put_be64(pb, 0);
1217

    
1218
    put_be64(pb, mxf->footer_partition_offset); // footerPartition
1219

    
1220
    // set offset
1221
    header_byte_count_offset = url_ftell(pb);
1222
    put_be64(pb, 0); // headerByteCount, update later
1223

    
1224
    // indexTable
1225
    put_be64(pb, index_byte_count); // indexByteCount
1226
    put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1227

    
1228
    // BodyOffset
1229
    if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1230
        put_be64(pb, mxf->body_offset);
1231
    } else
1232
        put_be64(pb, 0);
1233

    
1234
    put_be32(pb, bodysid); // bodySID
1235

    
1236
    // operational pattern
1237
    if (s->nb_streams > 1) {
1238
        put_buffer(pb, op1a_ul, 14);
1239
        put_be16(pb, 0x0900); // multi track
1240
    } else {
1241
        put_buffer(pb, op1a_ul, 16);
1242
    }
1243

    
1244
    // essence container
1245
    mxf_write_essence_container_refs(s);
1246

    
1247
    if (write_metadata) {
1248
        // mark the start of the headermetadata and calculate metadata size
1249
        int64_t pos, start;
1250
        unsigned header_byte_count;
1251

    
1252
        mxf_write_klv_fill(s);
1253
        start = url_ftell(s->pb);
1254
        mxf_write_primer_pack(s);
1255
        mxf_write_header_metadata_sets(s);
1256
        pos = url_ftell(s->pb);
1257
        header_byte_count = pos - start + klv_fill_size(pos);
1258

    
1259
        // update header_byte_count
1260
        url_fseek(pb, header_byte_count_offset, SEEK_SET);
1261
        put_be64(pb, header_byte_count);
1262
        url_fseek(pb, pos, SEEK_SET);
1263
    }
1264

    
1265
    put_flush_packet(pb);
1266
}
1267

    
1268
static const UID mxf_mpeg2_codec_uls[] = {
1269
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1270
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1271
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1272
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1273
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1274
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1275
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1276
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1277
};
1278

    
1279
static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1280
{
1281
    if (avctx->profile == 4) { // Main
1282
        if (avctx->level == 8) // Main
1283
            return avctx->gop_size ?
1284
                &mxf_mpeg2_codec_uls[1] :
1285
                &mxf_mpeg2_codec_uls[0];
1286
        else if (avctx->level == 4) // High
1287
            return avctx->gop_size ?
1288
                &mxf_mpeg2_codec_uls[5] :
1289
                &mxf_mpeg2_codec_uls[4];
1290
    } else if (avctx->profile == 0) { // 422
1291
        if (avctx->level == 5) // Main
1292
            return avctx->gop_size ?
1293
                &mxf_mpeg2_codec_uls[3] :
1294
                &mxf_mpeg2_codec_uls[2];
1295
        else if (avctx->level == 2) // High
1296
            return avctx->gop_size ?
1297
                &mxf_mpeg2_codec_uls[7] :
1298
                &mxf_mpeg2_codec_uls[6];
1299
    }
1300
    return NULL;
1301
}
1302

    
1303
static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1304
{
1305
    MXFStreamContext *sc = st->priv_data;
1306
    MXFContext *mxf = s->priv_data;
1307
    uint32_t c = -1;
1308
    int i;
1309

    
1310
    *flags = 0;
1311

    
1312
    for(i = 0; i < pkt->size - 4; i++) {
1313
        c = (c<<8) + pkt->data[i];
1314
        if (c == 0x1B5) {
1315
            if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1316
                st->codec->profile = pkt->data[i+1] & 0x07;
1317
                st->codec->level   = pkt->data[i+2] >> 4;
1318
            } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1319
                sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1320
                break;
1321
            }
1322
        } else if (c == 0x1b8) { // gop
1323
            if (i + 4 < pkt->size) {
1324
                if (pkt->data[i+4]>>6 & 0x01) // closed
1325
                    *flags |= 0x80; // random access
1326
                if (!mxf->header_written) {
1327
                    unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1328
                    unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1329
                    unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1330
                    unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1331
                    mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1332
                    mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1333
                        mxf->timecode_base + frames;
1334
                    if (mxf->timecode_drop_frame) {
1335
                        unsigned tminutes = 60 * hours + minutes;
1336
                        mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1337
                    }
1338
                    av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1339
                           hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1340
                }
1341
            }
1342
        } else if (c == 0x1b3) { // seq
1343
            *flags |= 0x40;
1344
            if (i + 4 < pkt->size) {
1345
                switch ((pkt->data[i+4]>>4) & 0xf) {
1346
                case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1347
                case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1348
                case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1349
                default:
1350
                    av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1351
                              st->codec->width, st->codec->height, 1024*1024);
1352
                }
1353
            }
1354
        } else if (c == 0x100) { // pic
1355
            int pict_type = (pkt->data[i+2]>>3) & 0x07;
1356
            if (pict_type == 2) { // P frame
1357
                *flags |= 0x22;
1358
                st->codec->gop_size = 1;
1359
            } else if (pict_type == 3) { // B frame
1360
                *flags |= 0x33;
1361
                sc->temporal_reordering = -1;
1362
            } else if (!pict_type) {
1363
                av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1364
                return 0;
1365
            }
1366
        }
1367
    }
1368
    if (s->oformat != &mxf_d10_muxer)
1369
        sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1370
    return !!sc->codec_ul;
1371
}
1372

    
1373
static uint64_t mxf_parse_timestamp(time_t timestamp)
1374
{
1375
    struct tm *time = localtime(&timestamp);
1376
    return (uint64_t)(time->tm_year+1900) << 48 |
1377
           (uint64_t)(time->tm_mon+1)     << 40 |
1378
           (uint64_t) time->tm_mday       << 32 |
1379
                      time->tm_hour       << 24 |
1380
                      time->tm_min        << 16 |
1381
                      time->tm_sec        << 8;
1382
}
1383

    
1384
static int mxf_write_header(AVFormatContext *s)
1385
{
1386
    MXFContext *mxf = s->priv_data;
1387
    int i;
1388
    uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1389
    const int *samples_per_frame = NULL;
1390

    
1391
    for (i = 0; i < s->nb_streams; i++) {
1392
        AVStream *st = s->streams[i];
1393
        MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1394
        if (!sc)
1395
            return AVERROR(ENOMEM);
1396
        st->priv_data = sc;
1397

    
1398
        if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1399
            if (i != 0) {
1400
                av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1401
                return -1;
1402
            }
1403
            if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1404
                samples_per_frame = PAL_samples_per_frame;
1405
                mxf->time_base = (AVRational){ 1, 25 };
1406
                mxf->timecode_base = 25;
1407
            } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1408
                samples_per_frame = NTSC_samples_per_frame;
1409
                mxf->time_base = (AVRational){ 1001, 30000 };
1410
                mxf->timecode_base = 30;
1411
            } else {
1412
                av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1413
                return -1;
1414
            }
1415
            av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1416
            if (s->oformat == &mxf_d10_muxer) {
1417
                if (st->codec->bit_rate == 50000000)
1418
                    if (mxf->time_base.den == 25) sc->index = 3;
1419
                    else                          sc->index = 5;
1420
                else if (st->codec->bit_rate == 40000000)
1421
                    if (mxf->time_base.den == 25) sc->index = 7;
1422
                    else                          sc->index = 9;
1423
                else if (st->codec->bit_rate == 30000000)
1424
                    if (mxf->time_base.den == 25) sc->index = 11;
1425
                    else                          sc->index = 13;
1426
                else {
1427
                    av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1428
                    return -1;
1429
                }
1430

    
1431
                mxf->edit_unit_byte_count = KAG_SIZE; // system element
1432
                mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1433
                    mxf->time_base.num / (8*mxf->time_base.den);
1434
                mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1435
                mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1436
                mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1437
            }
1438
        } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1439
            if (st->codec->sample_rate != 48000) {
1440
                av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1441
                return -1;
1442
            }
1443
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1444
            if (s->oformat == &mxf_d10_muxer) {
1445
                if (st->index != 1) {
1446
                    av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1447
                    return -1;
1448
                }
1449
                if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1450
                    st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1451
                    av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1452
                }
1453
                sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1454
            } else
1455
            mxf->slice_count = 1;
1456
        }
1457

    
1458
        if (!sc->index) {
1459
            sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1460
            if (sc->index == -1) {
1461
                av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1462
                       "codec not currently supported in container\n", i);
1463
                return -1;
1464
            }
1465
        }
1466

    
1467
        sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1468

    
1469
        if (!present[sc->index]) {
1470
            present[sc->index] = 1;
1471
            mxf->essence_container_count++;
1472
        } else
1473
            present[sc->index]++;
1474

    
1475
        memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1476
        sc->track_essence_element_key[15] = present[sc->index];
1477
        PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1478
    }
1479

    
1480
    if (s->oformat == &mxf_d10_muxer) {
1481
        mxf->essence_container_count = 1;
1482
    }
1483

    
1484
    for (i = 0; i < s->nb_streams; i++) {
1485
        MXFStreamContext *sc = s->streams[i]->priv_data;
1486
        // update element count
1487
        sc->track_essence_element_key[13] = present[sc->index];
1488
        sc->order = AV_RB32(sc->track_essence_element_key+12);
1489
    }
1490

    
1491
    mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1492
    mxf->duration = -1;
1493

    
1494
    mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1495
    if (!mxf->timecode_track)
1496
        return AVERROR(ENOMEM);
1497
    mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1498
    if (!mxf->timecode_track->priv_data)
1499
        return AVERROR(ENOMEM);
1500
    mxf->timecode_track->index = -1;
1501

    
1502
    if (!samples_per_frame)
1503
        samples_per_frame = PAL_samples_per_frame;
1504

    
1505
    if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1506
        return -1;
1507

    
1508
    return 0;
1509
}
1510

    
1511
static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1512
static const uint8_t system_metadata_package_set_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x43,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x02,0x01 };
1513

    
1514
static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1515
{
1516
    return (0                                    << 31) | // color frame flag
1517
           (0                                    << 30) | // drop  frame flag
1518
           ( ((frame % fps) / 10)                << 28) | // tens  of frames
1519
           ( ((frame % fps) % 10)                << 24) | // units of frames
1520
           (0                                    << 23) | // field phase (NTSC), b0 (PAL)
1521
           ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
1522
           ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
1523
           (0                                    << 15) | // b0 (NTSC), b2 (PAL)
1524
           ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
1525
           ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
1526
           (0                                    <<  7) | // b1
1527
           (0                                    <<  6) | // b2 (NSC), field phase (PAL)
1528
           ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
1529
           (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
1530
}
1531

    
1532
static void mxf_write_system_item(AVFormatContext *s)
1533
{
1534
    MXFContext *mxf = s->priv_data;
1535
    ByteIOContext *pb = s->pb;
1536
    unsigned frame;
1537
    uint32_t time_code;
1538

    
1539
    frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1540

    
1541
    // write system metadata pack
1542
    put_buffer(pb, system_metadata_pack_key, 16);
1543
    klv_encode_ber4_length(pb, 57);
1544
    put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1545
    put_byte(pb, 0x04); // content package rate
1546
    put_byte(pb, 0x00); // content package type
1547
    put_be16(pb, 0x00); // channel handle
1548
    put_be16(pb, frame); // continuity count
1549
    if (mxf->essence_container_count > 1)
1550
        put_buffer(pb, multiple_desc_ul, 16);
1551
    else {
1552
        MXFStreamContext *sc = s->streams[0]->priv_data;
1553
        put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1554
    }
1555
    put_byte(pb, 0);
1556
    put_be64(pb, 0);
1557
    put_be64(pb, 0); // creation date/time stamp
1558

    
1559
    put_byte(pb, 0x81); // SMPTE 12M time code
1560
    time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1561
    put_be32(pb, time_code);
1562
    put_be32(pb, 0); // binary group data
1563
    put_be64(pb, 0);
1564

    
1565
    // write system metadata package set
1566
    put_buffer(pb, system_metadata_package_set_key, 16);
1567
    klv_encode_ber4_length(pb, 35);
1568
    put_byte(pb, 0x83); // UMID
1569
    put_be16(pb, 0x20);
1570
    mxf_write_umid(pb, SourcePackage, 0);
1571
}
1572

    
1573
static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1574
{
1575
    MXFContext *mxf = s->priv_data;
1576
    ByteIOContext *pb = s->pb;
1577
    int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1578
        (8*mxf->time_base.den); // frame size
1579
    int pad;
1580

    
1581
    packet_size += 16 + 4;
1582
    packet_size += klv_fill_size(packet_size);
1583

    
1584
    klv_encode_ber4_length(pb, pkt->size);
1585
    put_buffer(pb, pkt->data, pkt->size);
1586

    
1587
    // ensure CBR muxing by padding to correct video frame size
1588
    pad = packet_size - pkt->size - 16 - 4;
1589
    if (pad > 20) {
1590
        put_buffer(s->pb, klv_fill_key, 16);
1591
        pad -= 16 + 4;
1592
        klv_encode_ber4_length(s->pb, pad);
1593
        for (; pad; pad--)
1594
            put_byte(s->pb, 0);
1595
        assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1596
    } else {
1597
        av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1598
        for (; pad > 0; pad--)
1599
            put_byte(s->pb, 0);
1600
    }
1601
}
1602

    
1603
static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1604
{
1605
    MXFContext *mxf = s->priv_data;
1606
    ByteIOContext *pb = s->pb;
1607
    int frame_size = (pkt->size<<3) /
1608
        (st->codec->channels*av_get_bits_per_sample(st->codec->codec_id));
1609
    uint8_t *samples = pkt->data;
1610
    uint8_t *end = pkt->data + pkt->size;
1611
    int i;
1612

    
1613
    klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1614

    
1615
    put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1616
    put_le16(pb, frame_size);
1617
    put_byte(pb, (1<<st->codec->channels)-1);
1618

    
1619
    while (samples < end) {
1620
        for (i = 0; i < st->codec->channels; i++) {
1621
            uint32_t sample;
1622
            if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1623
                sample = (AV_RL24(samples)<< 4)|((samples==pkt->data)<<3) | i;
1624
                samples += 3;
1625
            } else {
1626
                sample = (AV_RL16(samples)<<12)|((samples==pkt->data)<<3) | i;
1627
                samples += 2;
1628
            }
1629
            put_le32(pb, sample);
1630
        }
1631
        for (; i < 8; i++)
1632
            put_le32(pb, 0);
1633
    }
1634
}
1635

    
1636
static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1637
{
1638
    MXFContext *mxf = s->priv_data;
1639
    ByteIOContext *pb = s->pb;
1640
    AVStream *st = s->streams[pkt->stream_index];
1641
    MXFStreamContext *sc = st->priv_data;
1642
    int flags = 0;
1643

    
1644
    if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1645
        mxf->index_entries = av_realloc(mxf->index_entries,
1646
            (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1647
        if (!mxf->index_entries) {
1648
            av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1649
            return -1;
1650
        }
1651
    }
1652

    
1653
    if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1654
        if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1655
            av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1656
            return -1;
1657
        }
1658
    }
1659

    
1660
    if (!mxf->header_written) {
1661
        if (mxf->edit_unit_byte_count) {
1662
            mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1663
            mxf_write_klv_fill(s);
1664
            mxf_write_index_table_segment(s);
1665
        } else {
1666
            mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1667
        }
1668
        mxf->header_written = 1;
1669
    }
1670

    
1671
    if (st->index == 0) {
1672
        if (!mxf->edit_unit_byte_count &&
1673
            (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1674
            !(flags & 0x33)) { // I frame, Gop start
1675
            mxf_write_klv_fill(s);
1676
            mxf_write_partition(s, 1, 2, body_partition_key, 0);
1677

    
1678
            mxf_write_klv_fill(s);
1679
            mxf_write_index_table_segment(s);
1680
        }
1681

    
1682
        mxf_write_klv_fill(s);
1683
        mxf_write_system_item(s);
1684

    
1685
        if (!mxf->edit_unit_byte_count) {
1686
            mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1687
            mxf->index_entries[mxf->edit_units_count].flags = flags;
1688
            mxf->body_offset += KAG_SIZE; // size of system element
1689
        }
1690
        mxf->edit_units_count++;
1691
    } else if (!mxf->edit_unit_byte_count && st->index == 1) {
1692
        mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1693
            mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1694
    }
1695

    
1696
    mxf_write_klv_fill(s);
1697
    put_buffer(pb, sc->track_essence_element_key, 16); // write key
1698
    if (s->oformat == &mxf_d10_muxer) {
1699
        if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1700
            mxf_write_d10_video_packet(s, st, pkt);
1701
        else
1702
            mxf_write_d10_audio_packet(s, st, pkt);
1703
    } else {
1704
        klv_encode_ber4_length(pb, pkt->size); // write length
1705
        put_buffer(pb, pkt->data, pkt->size);
1706
        mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1707
    }
1708

    
1709
    put_flush_packet(pb);
1710

    
1711
    return 0;
1712
}
1713

    
1714
static void mxf_write_random_index_pack(AVFormatContext *s)
1715
{
1716
    MXFContext *mxf = s->priv_data;
1717
    ByteIOContext *pb = s->pb;
1718
    uint64_t pos = url_ftell(pb);
1719
    int i;
1720

    
1721
    put_buffer(pb, random_index_pack_key, 16);
1722
    klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1723

    
1724
    if (mxf->edit_unit_byte_count)
1725
        put_be32(pb, 1); // BodySID of header partition
1726
    else
1727
        put_be32(pb, 0);
1728
    put_be64(pb, 0); // offset of header partition
1729

    
1730
    for (i = 0; i < mxf->body_partitions_count; i++) {
1731
        put_be32(pb, 1); // BodySID
1732
        put_be64(pb, mxf->body_partition_offset[i]);
1733
    }
1734

    
1735
    put_be32(pb, 0); // BodySID of footer partition
1736
    put_be64(pb, mxf->footer_partition_offset);
1737

    
1738
    put_be32(pb, url_ftell(pb) - pos + 4);
1739
}
1740

    
1741
static int mxf_write_footer(AVFormatContext *s)
1742
{
1743
    MXFContext *mxf = s->priv_data;
1744
    ByteIOContext *pb = s->pb;
1745

    
1746
    mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1747

    
1748
    mxf_write_klv_fill(s);
1749
    mxf->footer_partition_offset = url_ftell(pb);
1750
    if (mxf->edit_unit_byte_count) { // no need to repeat index
1751
        mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1752
    } else {
1753
        mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1754

    
1755
        mxf_write_klv_fill(s);
1756
        mxf_write_index_table_segment(s);
1757
    }
1758

    
1759
    mxf_write_klv_fill(s);
1760
    mxf_write_random_index_pack(s);
1761

    
1762
    if (!url_is_streamed(s->pb)) {
1763
        url_fseek(pb, 0, SEEK_SET);
1764
        if (mxf->edit_unit_byte_count) {
1765
            mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1766
            mxf_write_klv_fill(s);
1767
            mxf_write_index_table_segment(s);
1768
        } else {
1769
            mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1770
        }
1771
    }
1772

    
1773
    put_flush_packet(pb);
1774

    
1775
    ff_audio_interleave_close(s);
1776

    
1777
    av_freep(&mxf->index_entries);
1778
    av_freep(&mxf->body_partition_offset);
1779
    av_freep(&mxf->timecode_track->priv_data);
1780
    av_freep(&mxf->timecode_track);
1781

    
1782
    mxf_free(s);
1783

    
1784
    return 0;
1785
}
1786

    
1787
static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1788
{
1789
    AVPacketList *pktl;
1790
    int stream_count = 0;
1791
    int streams[MAX_STREAMS];
1792

    
1793
    memset(streams, 0, sizeof(streams));
1794
    pktl = s->packet_buffer;
1795
    while (pktl) {
1796
        //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1797
        if (!streams[pktl->pkt.stream_index])
1798
            stream_count++;
1799
        streams[pktl->pkt.stream_index]++;
1800
        pktl = pktl->next;
1801
    }
1802

    
1803
    if (stream_count && (s->nb_streams == stream_count || flush)) {
1804
        pktl = s->packet_buffer;
1805
        if (s->nb_streams != stream_count) {
1806
            AVPacketList *last = NULL;
1807
            // find last packet in edit unit
1808
            while (pktl) {
1809
                if (!stream_count || pktl->pkt.stream_index == 0)
1810
                    break;
1811
                last = pktl;
1812
                pktl = pktl->next;
1813
                stream_count--;
1814
            }
1815
            // purge packet queue
1816
            while (pktl) {
1817
                AVPacketList *next = pktl->next;
1818
                av_free_packet(&pktl->pkt);
1819
                av_freep(&pktl);
1820
                pktl = next;
1821
            }
1822
            if (last)
1823
                last->next = NULL;
1824
            else {
1825
                s->packet_buffer = NULL;
1826
                goto out;
1827
            }
1828
            pktl = s->packet_buffer;
1829
        }
1830

    
1831
        *out = pktl->pkt;
1832
        //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1833
        s->packet_buffer = pktl->next;
1834
        av_freep(&pktl);
1835
        return 1;
1836
    } else {
1837
    out:
1838
        av_init_packet(out);
1839
        return 0;
1840
    }
1841
}
1842

    
1843
static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1844
{
1845
    MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1846
    MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1847

    
1848
    return next->dts > pkt->dts ||
1849
        (next->dts == pkt->dts && sc->order < sc2->order);
1850
}
1851

    
1852
static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1853
{
1854
    return ff_audio_rechunk_interleave(s, out, pkt, flush,
1855
                               mxf_interleave_get_packet, mxf_compare_timestamps);
1856
}
1857

    
1858
AVOutputFormat mxf_muxer = {
1859
    "mxf",
1860
    NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1861
    "application/mxf",
1862
    "mxf",
1863
    sizeof(MXFContext),
1864
    CODEC_ID_PCM_S16LE,
1865
    CODEC_ID_MPEG2VIDEO,
1866
    mxf_write_header,
1867
    mxf_write_packet,
1868
    mxf_write_footer,
1869
    AVFMT_NOTIMESTAMPS,
1870
    NULL,
1871
    mxf_interleave,
1872
};
1873

    
1874
AVOutputFormat mxf_d10_muxer = {
1875
    "mxf_d10",
1876
    NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1877
    "application/mxf",
1878
    NULL,
1879
    sizeof(MXFContext),
1880
    CODEC_ID_PCM_S16LE,
1881
    CODEC_ID_MPEG2VIDEO,
1882
    mxf_write_header,
1883
    mxf_write_packet,
1884
    mxf_write_footer,
1885
    AVFMT_NOTIMESTAMPS,
1886
    NULL,
1887
    mxf_interleave,
1888
};