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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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} 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 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
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      mxf_write_cdci_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
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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 },
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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,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
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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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    uint8_t essence_containers_indices[FF_ARRAY_ELEMS(mxf_essence_container_uls)];
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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 first_edit_unit_offset;
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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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} 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
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static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
206
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 };
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static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
213

    
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
        put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
431
        PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
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);
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 if (type == MaterialPackage)
641
        component = SourceClip;
642
    else
643
        component = SourceClip+TypeBottom;
644
    mxf_write_uuid(pb, component, st->index);
645
}
646

    
647
static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st)
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, TimecodeComponent, st->index);
658

    
659
    mxf_write_common_fields(s, st);
660

    
661
    // Start Time Code
662
    mxf_write_local_tag(pb, 8, 0x1501);
663
    put_be64(pb, mxf->timecode_start);
664

    
665
    // Rounded Time Code Base
666
    mxf_write_local_tag(pb, 2, 0x1502);
667
    put_be16(pb, mxf->timecode_base);
668

    
669
    // Drop Frame
670
    mxf_write_local_tag(pb, 1, 0x1503);
671
    put_byte(pb, mxf->timecode_drop_frame);
672
}
673

    
674
static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
675
{
676
    ByteIOContext *pb = s->pb;
677
    int i;
678

    
679
    mxf_write_metadata_key(pb, 0x011100);
680
    PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
681
    klv_encode_ber_length(pb, 108);
682

    
683
    // write uid
684
    mxf_write_local_tag(pb, 16, 0x3C0A);
685
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
686

    
687
    PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
688
    mxf_write_common_fields(s, st);
689

    
690
    // write start_position
691
    mxf_write_local_tag(pb, 8, 0x1201);
692
    put_be64(pb, 0);
693

    
694
    // write source package uid, end of the reference
695
    mxf_write_local_tag(pb, 32, 0x1101);
696
    if (type == SourcePackage) {
697
        for (i = 0; i < 4; i++)
698
            put_be64(pb, 0);
699
    } else
700
        mxf_write_umid(pb, SourcePackage, 0);
701

    
702
    // write source track id
703
    mxf_write_local_tag(pb, 4, 0x1102);
704
    if (type == SourcePackage)
705
        put_be32(pb, 0);
706
    else
707
        put_be32(pb, st->index);
708
}
709

    
710
static void mxf_write_multi_descriptor(AVFormatContext *s)
711
{
712
    MXFContext *mxf = s->priv_data;
713
    ByteIOContext *pb = s->pb;
714
    const uint8_t *ul;
715
    int i;
716

    
717
    mxf_write_metadata_key(pb, 0x014400);
718
    PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
719
    klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
720

    
721
    mxf_write_local_tag(pb, 16, 0x3C0A);
722
    mxf_write_uuid(pb, MultipleDescriptor, 0);
723
    PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
724

    
725
    // write sample rate
726
    mxf_write_local_tag(pb, 8, 0x3001);
727
    put_be32(pb, mxf->time_base.den);
728
    put_be32(pb, mxf->time_base.num);
729

    
730
    // write essence container ul
731
    mxf_write_local_tag(pb, 16, 0x3004);
732
    if (mxf->essence_container_count > 1)
733
        ul = multiple_desc_ul;
734
    else
735
        ul = mxf_essence_container_uls[mxf->essence_containers_indices[0]].container_ul;
736
    put_buffer(pb, ul, 16);
737

    
738
    // write sub descriptor refs
739
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
740
    mxf_write_refs_count(pb, s->nb_streams);
741
    for (i = 0; i < s->nb_streams; i++)
742
        mxf_write_uuid(pb, SubDescriptor, i);
743
}
744

    
745
static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
746
{
747
    MXFContext *mxf = s->priv_data;
748
    MXFStreamContext *sc = st->priv_data;
749
    ByteIOContext *pb = s->pb;
750

    
751
    put_buffer(pb, key, 16);
752
    klv_encode_ber_length(pb, size);
753

    
754
    mxf_write_local_tag(pb, 16, 0x3C0A);
755
    mxf_write_uuid(pb, SubDescriptor, st->index);
756

    
757
    mxf_write_local_tag(pb, 4, 0x3006);
758
    put_be32(pb, st->index);
759

    
760
    mxf_write_local_tag(pb, 8, 0x3001);
761
    put_be32(pb, mxf->time_base.den);
762
    put_be32(pb, mxf->time_base.num);
763

    
764
    mxf_write_local_tag(pb, 16, 0x3004);
765
    put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
766
}
767

    
768
static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
769
static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
770
static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
771
static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
772
static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
773

    
774
static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
775
{
776
    MXFStreamContext *sc = st->priv_data;
777
    ByteIOContext *pb = s->pb;
778
    int stored_height = (st->codec->height+15)/16*16;
779
    int display_height;
780
    AVRational dar;
781
    int f1, f2;
782

    
783
    mxf_write_generic_desc(s, st, key, size);
784

    
785
    mxf_write_local_tag(pb, 4, 0x3203);
786
    put_be32(pb, st->codec->width);
787

    
788
    mxf_write_local_tag(pb, 4, 0x3202);
789
    put_be32(pb, stored_height>>sc->interlaced);
790

    
791
    mxf_write_local_tag(pb, 4, 0x3209);
792
    put_be32(pb, st->codec->width);
793

    
794
    if (st->codec->height == 608) // PAL + VBI
795
        display_height = 576;
796
    else if (st->codec->height == 512)  // NTSC + VBI
797
        display_height = 486;
798
    else
799
        display_height = st->codec->height;
800

    
801
    mxf_write_local_tag(pb, 4, 0x3208);
802
    put_be32(pb, display_height>>sc->interlaced);
803

    
804
    // component depth
805
    mxf_write_local_tag(pb, 4, 0x3301);
806
    put_be32(pb, 8);
807

    
808
    // horizontal subsampling
809
    mxf_write_local_tag(pb, 4, 0x3302);
810
    put_be32(pb, 2);
811

    
812
    // frame layout
813
    mxf_write_local_tag(pb, 1, 0x320C);
814
    put_byte(pb, sc->interlaced);
815

    
816
    // video line map
817
    switch (st->codec->height) {
818
    case  576: f1 = 23; f2 = 336; break;
819
    case  608: f1 =  7; f2 = 320; break;
820
    case  480: f1 = 20; f2 = 283; break;
821
    case  512: f1 =  7; f2 = 270; break;
822
    case  720: f1 = 26; f2 =   0; break; // progressive
823
    case 1080: f1 = 21; f2 = 584; break;
824
    default:   f1 =  0; f2 =   0; break;
825
    }
826

    
827
    if (!sc->interlaced) {
828
        f2  = 0;
829
        f1 *= 2;
830
    }
831

    
832
    mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
833
    put_be32(pb, sc->interlaced ? 2 : 1);
834
    put_be32(pb, 4);
835
    put_be32(pb, f1);
836
    if (sc->interlaced)
837
        put_be32(pb, f2);
838

    
839
    av_reduce(&dar.num, &dar.den,
840
              st->codec->width*st->codec->sample_aspect_ratio.num,
841
              st->codec->height*st->codec->sample_aspect_ratio.den,
842
              1024*1024);
843

    
844
    mxf_write_local_tag(pb, 8, 0x320E);
845
    put_be32(pb, dar.num);
846
    put_be32(pb, dar.den);
847

    
848
    mxf_write_local_tag(pb, 16, 0x3201);
849
    put_buffer(pb, *sc->codec_ul, 16);
850
}
851

    
852
static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
853
{
854
    MXFStreamContext *sc = st->priv_data;
855
    mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 161+sc->interlaced*4);
856
}
857

    
858
static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
859
{
860
    MXFStreamContext *sc = st->priv_data;
861
    ByteIOContext *pb = s->pb;
862

    
863
    mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 169+sc->interlaced*4);
864

    
865
    // bit rate
866
    mxf_write_local_tag(pb, 4, 0x8000);
867
    put_be32(pb, st->codec->bit_rate);
868
}
869

    
870
static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
871
{
872
    ByteIOContext *pb = s->pb;
873

    
874
    mxf_write_generic_desc(s, st, key, size);
875

    
876
    // audio locked
877
    mxf_write_local_tag(pb, 1, 0x3D02);
878
    put_byte(pb, 1);
879

    
880
    // write audio sampling rate
881
    mxf_write_local_tag(pb, 8, 0x3D03);
882
    put_be32(pb, st->codec->sample_rate);
883
    put_be32(pb, 1);
884

    
885
    mxf_write_local_tag(pb, 4, 0x3D07);
886
    put_be32(pb, st->codec->channels);
887

    
888
    mxf_write_local_tag(pb, 4, 0x3D01);
889
    put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
890
}
891

    
892
static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
893
{
894
    ByteIOContext *pb = s->pb;
895

    
896
    mxf_write_generic_sound_common(s, st, key, size);
897

    
898
    mxf_write_local_tag(pb, 2, 0x3D0A);
899
    put_be16(pb, st->codec->block_align);
900

    
901
    // avg bytes per sec
902
    mxf_write_local_tag(pb, 4, 0x3D09);
903
    put_be32(pb, st->codec->block_align*st->codec->sample_rate);
904
}
905

    
906
static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
907
{
908
    mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 107);
909
}
910

    
911
static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
912
{
913
    mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 107);
914
}
915

    
916
static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
917
{
918
    mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 93);
919
}
920

    
921
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
922
{
923
    MXFContext *mxf = s->priv_data;
924
    ByteIOContext *pb = s->pb;
925
    int i, track_count;
926

    
927
    if (type == MaterialPackage) {
928
        track_count = s->nb_streams + 1; // add timecode track
929
        mxf_write_metadata_key(pb, 0x013600);
930
        PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
931
        klv_encode_ber_length(pb, 92 + 16*track_count);
932
    } else {
933
        track_count = s->nb_streams;
934
        mxf_write_metadata_key(pb, 0x013700);
935
        PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
936
        klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
937
    }
938

    
939
    // write uid
940
    mxf_write_local_tag(pb, 16, 0x3C0A);
941
    mxf_write_uuid(pb, type, 0);
942
    av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
943
    PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
944

    
945
    // write package umid
946
    mxf_write_local_tag(pb, 32, 0x4401);
947
    mxf_write_umid(pb, type, 0);
948
    PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
949

    
950
    // package creation date
951
    mxf_write_local_tag(pb, 8, 0x4405);
952
    put_be64(pb, mxf->timestamp);
953

    
954
    // package modified date
955
    mxf_write_local_tag(pb, 8, 0x4404);
956
    put_be64(pb, mxf->timestamp);
957

    
958
    // write track refs
959
    mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
960
    mxf_write_refs_count(pb, track_count);
961
    for (i = 0; i < s->nb_streams; i++)
962
        mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
963
    if (type == MaterialPackage)
964
        mxf_write_uuid(pb, Track, s->nb_streams); // timecode track
965

    
966
    // write multiple descriptor reference
967
    if (type == SourcePackage) {
968
        mxf_write_local_tag(pb, 16, 0x4701);
969
        if (s->nb_streams > 1) {
970
            mxf_write_uuid(pb, MultipleDescriptor, 0);
971
            mxf_write_multi_descriptor(s);
972
        } else
973
            mxf_write_uuid(pb, SubDescriptor, 0);
974
    } else {
975
        // write timecode track
976
        mxf_write_track(s, mxf->timecode_track, type);
977
        mxf_write_sequence(s, mxf->timecode_track, type);
978
        mxf_write_timecode_component(s, mxf->timecode_track);
979
    }
980

    
981
    for (i = 0; i < s->nb_streams; i++) {
982
        AVStream *st = s->streams[i];
983
        mxf_write_track(s, st, type);
984
        mxf_write_sequence(s, st, type);
985
        mxf_write_structural_component(s, st, type);
986

    
987
        if (type == SourcePackage) {
988
            MXFStreamContext *sc = st->priv_data;
989
            mxf_essence_container_uls[sc->index].write_desc(s, st);
990
        }
991
    }
992
}
993

    
994
static int mxf_write_essence_container_data(AVFormatContext *s)
995
{
996
    ByteIOContext *pb = s->pb;
997

    
998
    mxf_write_metadata_key(pb, 0x012300);
999
    klv_encode_ber_length(pb, 72);
1000

    
1001
    mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1002
    mxf_write_uuid(pb, EssenceContainerData, 0);
1003

    
1004
    mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1005
    mxf_write_umid(pb, SourcePackage, 0);
1006

    
1007
    mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1008
    put_be32(pb, 1);
1009

    
1010
    mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1011
    put_be32(pb, 2);
1012

    
1013
    return 0;
1014
}
1015

    
1016
static int mxf_write_header_metadata_sets(AVFormatContext *s)
1017
{
1018
    mxf_write_preface(s);
1019
    mxf_write_identification(s);
1020
    mxf_write_content_storage(s);
1021
    mxf_write_package(s, MaterialPackage);
1022
    mxf_write_package(s, SourcePackage);
1023
    mxf_write_essence_container_data(s);
1024
    return 0;
1025
}
1026

    
1027
static unsigned klv_fill_size(uint64_t size)
1028
{
1029
    unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1030
    if (pad < 20) // smallest fill item possible
1031
        return pad + KAG_SIZE;
1032
    else
1033
        return pad & (KAG_SIZE-1);
1034
}
1035

    
1036
static void mxf_write_index_table_segment(AVFormatContext *s)
1037
{
1038
    MXFContext *mxf = s->priv_data;
1039
    ByteIOContext *pb = s->pb;
1040
    int i, j;
1041
    int temporal_reordering = 0;
1042
    int key_index = mxf->last_key_index;
1043

    
1044
    av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1045

    
1046
    if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1047
        return;
1048

    
1049
    put_buffer(pb, index_table_segment_key, 16);
1050

    
1051
    if (mxf->edit_unit_byte_count) {
1052
        klv_encode_ber_length(pb, 85);
1053
    } else {
1054
        klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1055
                              12+mxf->edit_units_count*(11+mxf->slice_count*4));
1056
    }
1057

    
1058
    // instance id
1059
    mxf_write_local_tag(pb, 16, 0x3C0A);
1060
    mxf_write_uuid(pb, IndexTableSegment, 0);
1061

    
1062
    // index edit rate
1063
    mxf_write_local_tag(pb, 8, 0x3F0B);
1064
    put_be32(pb, mxf->time_base.num);
1065
    put_be32(pb, mxf->time_base.den);
1066

    
1067
    // index start position
1068
    mxf_write_local_tag(pb, 8, 0x3F0C);
1069
    put_be64(pb, mxf->last_indexed_edit_unit);
1070

    
1071
    // index duration
1072
    mxf_write_local_tag(pb, 8, 0x3F0D);
1073
    put_be64(pb, mxf->edit_units_count);
1074

    
1075
    // edit unit byte count
1076
    mxf_write_local_tag(pb, 4, 0x3F05);
1077
    put_be32(pb, mxf->edit_unit_byte_count);
1078

    
1079
    // index sid
1080
    mxf_write_local_tag(pb, 4, 0x3F06);
1081
    put_be32(pb, 2);
1082

    
1083
    // body sid
1084
    mxf_write_local_tag(pb, 4, 0x3F07);
1085
    put_be32(pb, 1);
1086

    
1087
    // real slice count - 1
1088
    mxf_write_local_tag(pb, 1, 0x3F08);
1089
    put_byte(pb, mxf->slice_count);
1090

    
1091
    if (!mxf->edit_unit_byte_count) {
1092
        // delta entry array
1093
        mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1094
        put_be32(pb, s->nb_streams+1); // num of entries
1095
        put_be32(pb, 6);               // size of one entry
1096
        // write system item delta entry
1097
        put_byte(pb, 0);
1098
        put_byte(pb, 0); // slice entry
1099
        put_be32(pb, 0); // element delta
1100
        for (i = 0; i < s->nb_streams; i++) {
1101
            AVStream *st = s->streams[i];
1102
            MXFStreamContext *sc = st->priv_data;
1103
            put_byte(pb, sc->temporal_reordering);
1104
            if (sc->temporal_reordering)
1105
                temporal_reordering = 1;
1106
            if (i == 0) { // video track
1107
                put_byte(pb, 0); // slice number
1108
                put_be32(pb, KAG_SIZE); // system item size including klv fill
1109
            } else { // audio track
1110
                unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1111
                audio_frame_size += klv_fill_size(audio_frame_size);
1112
                put_byte(pb, 1);
1113
                put_be32(pb, (i-1)*audio_frame_size); // element delta
1114
            }
1115
        }
1116

    
1117
        mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1118
        put_be32(pb, mxf->edit_units_count);  // num of entries
1119
        put_be32(pb, 11+mxf->slice_count*4);  // size of one entry
1120
        for (i = 0; i < mxf->edit_units_count; i++) {
1121
            if (temporal_reordering) {
1122
                int temporal_offset = 0;
1123
                for (j = i+1; j < mxf->edit_units_count; j++) {
1124
                    temporal_offset++;
1125
                    if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1126
                        // next is not b, so is reordered
1127
                        if (!(mxf->index_entries[i+1].flags & 0x10)) {
1128
                            if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
1129
                                temporal_offset = 0;
1130
                            else
1131
                                temporal_offset = -temporal_offset;
1132
                        }
1133
                        break;
1134
                    }
1135
                }
1136
                put_byte(pb, temporal_offset);
1137
            } else
1138
                put_byte(pb, 0);
1139
            if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1140
                mxf->last_key_index = key_index;
1141
                key_index = i;
1142
            }
1143
            if (mxf->index_entries[i].flags & 0x10 && // backward prediction
1144
                !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
1145
                put_byte(pb, mxf->last_key_index - i);
1146
            } else {
1147
                put_byte(pb, key_index - i); // key frame offset
1148
                if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1149
                    mxf->last_key_index = key_index;
1150
            }
1151
            put_byte(pb, mxf->index_entries[i].flags);
1152
            // stream offset
1153
            put_be64(pb, mxf->index_entries[i].offset - mxf->first_edit_unit_offset);
1154
            if (s->nb_streams > 1)
1155
                put_be32(pb, mxf->index_entries[i].slice_offset);
1156
        }
1157

    
1158
        mxf->last_key_index = key_index - mxf->edit_units_count;
1159
        mxf->last_indexed_edit_unit += mxf->edit_units_count;
1160
        mxf->edit_units_count = 0;
1161
    }
1162
}
1163

    
1164
static void mxf_write_klv_fill(AVFormatContext *s)
1165
{
1166
    unsigned pad = klv_fill_size(url_ftell(s->pb));
1167
    if (pad) {
1168
        put_buffer(s->pb, klv_fill_key, 16);
1169
        pad -= 16 + 4;
1170
        klv_encode_ber4_length(s->pb, pad);
1171
        for (; pad; pad--)
1172
            put_byte(s->pb, 0);
1173
        assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1174
    }
1175
}
1176

    
1177
static void mxf_write_partition(AVFormatContext *s, int bodysid,
1178
                                int indexsid,
1179
                                const uint8_t *key, int write_metadata)
1180
{
1181
    MXFContext *mxf = s->priv_data;
1182
    ByteIOContext *pb = s->pb;
1183
    int64_t header_byte_count_offset;
1184
    unsigned index_byte_count = 0;
1185
    uint64_t partition_offset = url_ftell(pb);
1186

    
1187
    if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1188
        index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1189
            12+mxf->edit_units_count*(11+mxf->slice_count*4);
1190
    else if (mxf->edit_unit_byte_count && indexsid)
1191
        index_byte_count = 85;
1192

    
1193
    if (index_byte_count) {
1194
        // add encoded ber length
1195
        index_byte_count += 16 + klv_ber_length(index_byte_count);
1196
        index_byte_count += klv_fill_size(index_byte_count);
1197
    }
1198

    
1199
    if (!memcmp(key, body_partition_key, 16)) {
1200
        mxf->body_partition_offset =
1201
            av_realloc(mxf->body_partition_offset,
1202
                       (mxf->body_partitions_count+1)*
1203
                       sizeof(*mxf->body_partition_offset));
1204
        mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1205
    }
1206

    
1207
    // write klv
1208
    put_buffer(pb, key, 16);
1209
    klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1210

    
1211
    // write partition value
1212
    put_be16(pb, 1); // majorVersion
1213
    put_be16(pb, 2); // minorVersion
1214
    put_be32(pb, KAG_SIZE); // KAGSize
1215

    
1216
    put_be64(pb, partition_offset); // ThisPartition
1217

    
1218
    if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1219
        put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1220
    else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1221
        put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1222
    else
1223
        put_be64(pb, 0);
1224

    
1225
    put_be64(pb, mxf->footer_partition_offset); // footerPartition
1226

    
1227
    // set offset
1228
    header_byte_count_offset = url_ftell(pb);
1229
    put_be64(pb, 0); // headerByteCount, update later
1230

    
1231
    // indexTable
1232
    put_be64(pb, index_byte_count); // indexByteCount
1233
    put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1234

    
1235
    // BodyOffset
1236
    if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1237
        uint64_t partition_end = url_ftell(pb) + 8 + 4 + 16 + 8 +
1238
            16*mxf->essence_container_count;
1239
        put_be64(pb, partition_end + klv_fill_size(partition_end) +
1240
                 index_byte_count - mxf->first_edit_unit_offset);
1241
    } else
1242
        put_be64(pb, 0);
1243

    
1244
    put_be32(pb, bodysid); // bodySID
1245

    
1246
    // operational pattern
1247
    if (s->nb_streams > 1) {
1248
        put_buffer(pb, op1a_ul, 14);
1249
        put_be16(pb, 0x0900); // multi track
1250
    } else {
1251
        put_buffer(pb, op1a_ul, 16);
1252
    }
1253

    
1254
    // essence container
1255
    mxf_write_essence_container_refs(s);
1256

    
1257
    if (write_metadata) {
1258
        // mark the start of the headermetadata and calculate metadata size
1259
        int64_t pos, start;
1260
        unsigned header_byte_count;
1261

    
1262
        mxf_write_klv_fill(s);
1263
        start = url_ftell(s->pb);
1264
        mxf_write_primer_pack(s);
1265
        mxf_write_header_metadata_sets(s);
1266
        pos = url_ftell(s->pb);
1267
        header_byte_count = pos - start + klv_fill_size(pos);
1268

    
1269
        // update header_byte_count
1270
        url_fseek(pb, header_byte_count_offset, SEEK_SET);
1271
        put_be64(pb, header_byte_count);
1272
        url_fseek(pb, pos, SEEK_SET);
1273
    }
1274

    
1275
    put_flush_packet(pb);
1276
}
1277

    
1278
static const UID mxf_mpeg2_codec_uls[] = {
1279
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1280
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1281
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1282
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1283
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1284
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1285
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1286
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1287
};
1288

    
1289
static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1290
{
1291
    if (avctx->profile == 4) { // Main
1292
        if (avctx->level == 8) // Main
1293
            return avctx->gop_size ?
1294
                &mxf_mpeg2_codec_uls[1] :
1295
                &mxf_mpeg2_codec_uls[0];
1296
        else if (avctx->level == 4) // High
1297
            return avctx->gop_size ?
1298
                &mxf_mpeg2_codec_uls[5] :
1299
                &mxf_mpeg2_codec_uls[4];
1300
    } else if (avctx->profile == 0) { // 422
1301
        if (avctx->level == 5) // Main
1302
            return avctx->gop_size ?
1303
                &mxf_mpeg2_codec_uls[3] :
1304
                &mxf_mpeg2_codec_uls[2];
1305
        else if (avctx->level == 2) // High
1306
            return avctx->gop_size ?
1307
                &mxf_mpeg2_codec_uls[7] :
1308
                &mxf_mpeg2_codec_uls[6];
1309
    }
1310
    return NULL;
1311
}
1312

    
1313
static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1314
{
1315
    MXFStreamContext *sc = st->priv_data;
1316
    MXFContext *mxf = s->priv_data;
1317
    uint32_t c = -1;
1318
    int i;
1319

    
1320
    *flags = 0;
1321

    
1322
    for(i = 0; i < pkt->size - 4; i++) {
1323
        c = (c<<8) + pkt->data[i];
1324
        if (c == 0x1B5) {
1325
            if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1326
                st->codec->profile = pkt->data[i+1] & 0x07;
1327
                st->codec->level   = pkt->data[i+2] >> 4;
1328
            } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1329
                sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1330
                break;
1331
            }
1332
        } else if (c == 0x1b8) { // gop
1333
            if (i + 4 < pkt->size) {
1334
                if (pkt->data[i+4]>>6 & 0x01) // closed
1335
                    *flags |= 0x80; // random access
1336
                if (!mxf->header_written) {
1337
                    unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1338
                    unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1339
                    unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1340
                    unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1341
                    mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1342
                    mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1343
                        mxf->timecode_base + frames;
1344
                    if (mxf->timecode_drop_frame) {
1345
                        unsigned tminutes = 60 * hours + minutes;
1346
                        mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1347
                    }
1348
                    av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1349
                           hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1350
                }
1351
            }
1352
        } else if (c == 0x1b3) { // seq
1353
            *flags |= 0x40;
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
            mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
1471
            present[sc->index] = 1;
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 = s->nb_streams;
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
        put_buffer(pb, mxf_essence_container_uls[mxf->essence_containers_indices[0]].container_ul, 16);
1553
    put_byte(pb, 0);
1554
    put_be64(pb, 0);
1555
    put_be64(pb, 0); // creation date/time stamp
1556

    
1557
    put_byte(pb, 0x81); // SMPTE 12M time code
1558
    time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1559
    put_be32(pb, time_code);
1560
    put_be32(pb, 0); // binary group data
1561
    put_be64(pb, 0);
1562

    
1563
    // write system metadata package set
1564
    put_buffer(pb, system_metadata_package_set_key, 16);
1565
    klv_encode_ber4_length(pb, 35);
1566
    put_byte(pb, 0x83); // UMID
1567
    put_be16(pb, 0x20);
1568
    mxf_write_umid(pb, SourcePackage, 0);
1569
}
1570

    
1571
static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1572
{
1573
    MXFContext *mxf = s->priv_data;
1574
    ByteIOContext *pb = s->pb;
1575
    int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1576
        (8*mxf->time_base.den); // frame size
1577
    int pad;
1578

    
1579
    packet_size += 16 + 4;
1580
    packet_size += klv_fill_size(packet_size);
1581

    
1582
    klv_encode_ber4_length(pb, pkt->size);
1583
    put_buffer(pb, pkt->data, pkt->size);
1584

    
1585
    // ensure CBR muxing by padding to correct video frame size
1586
    pad = packet_size - pkt->size - 16 - 4;
1587
    if (pad > 20) {
1588
        put_buffer(s->pb, klv_fill_key, 16);
1589
        pad -= 16 + 4;
1590
        klv_encode_ber4_length(s->pb, pad);
1591
        for (; pad; pad--)
1592
            put_byte(s->pb, 0);
1593
        assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1594
    } else {
1595
        av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1596
        for (; pad > 0; pad--)
1597
            put_byte(s->pb, 0);
1598
    }
1599
}
1600

    
1601
static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1602
{
1603
    MXFContext *mxf = s->priv_data;
1604
    ByteIOContext *pb = s->pb;
1605
    int frame_size = (pkt->size<<3) /
1606
        (st->codec->channels*av_get_bits_per_sample(st->codec->codec_id));
1607
    uint8_t *samples = pkt->data;
1608
    uint8_t *end = pkt->data + pkt->size;
1609
    int i;
1610

    
1611
    klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1612

    
1613
    put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1614
    put_le16(pb, frame_size);
1615
    put_byte(pb, (1<<st->codec->channels)-1);
1616

    
1617
    while (samples < end) {
1618
        for (i = 0; i < st->codec->channels; i++) {
1619
            uint32_t sample;
1620
            if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1621
                sample = (AV_RL24(samples)<< 4)|((samples==pkt->data)<<3) | i;
1622
                samples += 3;
1623
            } else {
1624
                sample = (AV_RL16(samples)<<12)|((samples==pkt->data)<<3) | i;
1625
                samples += 2;
1626
            }
1627
            put_le32(pb, sample);
1628
        }
1629
        for (; i < 8; i++)
1630
            put_le32(pb, 0);
1631
    }
1632
}
1633

    
1634
static int mxf_write_d10_packet(AVFormatContext *s, AVPacket *pkt)
1635
{
1636
    MXFContext *mxf = s->priv_data;
1637
    ByteIOContext *pb = s->pb;
1638
    AVStream *st = s->streams[pkt->stream_index];
1639
    MXFStreamContext *sc = st->priv_data;
1640
    int flags = 0;
1641

    
1642
    if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1643
        if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1644
            av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1645
            return -1;
1646
        }
1647
    }
1648

    
1649
    if (!mxf->header_written) {
1650
        mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1651
        mxf->header_written = 1;
1652
        mxf_write_klv_fill(s);
1653
        mxf_write_index_table_segment(s);
1654
    }
1655

    
1656
    if (st->index == 0) {
1657
        mxf_write_klv_fill(s);
1658
        mxf_write_system_item(s);
1659

    
1660
        mxf->edit_units_count++;
1661
    }
1662

    
1663
    mxf_write_klv_fill(s);
1664
    put_buffer(pb, sc->track_essence_element_key, 16); // write key
1665
    if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1666
        mxf_write_d10_video_packet(s, st, pkt);
1667
    else
1668
        mxf_write_d10_audio_packet(s, st, pkt);
1669

    
1670
    put_flush_packet(pb);
1671

    
1672
    return 0;
1673
}
1674

    
1675
static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1676
{
1677
    MXFContext *mxf = s->priv_data;
1678
    ByteIOContext *pb = s->pb;
1679
    AVStream *st = s->streams[pkt->stream_index];
1680
    MXFStreamContext *sc = st->priv_data;
1681
    int flags = 0;
1682

    
1683
    if (!(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1684
        mxf->index_entries = av_realloc(mxf->index_entries,
1685
            (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1686
        if (!mxf->index_entries) {
1687
            av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1688
            return -1;
1689
        }
1690
    }
1691

    
1692
    if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1693
        if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1694
            av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1695
            return -1;
1696
        }
1697
    }
1698

    
1699
    if (!mxf->header_written) {
1700
        mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1701
        mxf->header_written = 1;
1702
    }
1703

    
1704
    if (st->index == 0) {
1705
        if ((!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1706
            !(flags & 0x33)) { // I frame, Gop start
1707
            mxf_write_klv_fill(s);
1708
            mxf_write_partition(s, 1, 2, body_partition_key, 0);
1709

    
1710
            mxf_write_klv_fill(s);
1711
            mxf_write_index_table_segment(s);
1712
        }
1713

    
1714
        mxf_write_klv_fill(s);
1715
        mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1716
        mxf->index_entries[mxf->edit_units_count].flags = flags;
1717
        if (!mxf->first_edit_unit_offset)
1718
            mxf->first_edit_unit_offset = mxf->index_entries[0].offset;
1719
        mxf_write_system_item(s);
1720

    
1721
        mxf->edit_units_count++;
1722
    } else if (st->index == 1) {
1723
        mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1724
            url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
1725
    }
1726

    
1727
    mxf_write_klv_fill(s);
1728
    put_buffer(pb, sc->track_essence_element_key, 16); // write key
1729
    klv_encode_ber4_length(pb, pkt->size); // write length
1730
    put_buffer(pb, pkt->data, pkt->size); // write value
1731

    
1732
    put_flush_packet(pb);
1733
    return 0;
1734
}
1735

    
1736
static void mxf_write_random_index_pack(AVFormatContext *s)
1737
{
1738
    MXFContext *mxf = s->priv_data;
1739
    ByteIOContext *pb = s->pb;
1740
    uint64_t pos = url_ftell(pb);
1741
    int i;
1742

    
1743
    put_buffer(pb, random_index_pack_key, 16);
1744
    klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1745

    
1746
    put_be32(pb, 0); // BodySID of header partition
1747
    put_be64(pb, 0); // offset of header partition
1748

    
1749
    for (i = 0; i < mxf->body_partitions_count; i++) {
1750
        put_be32(pb, 1); // BodySID
1751
        put_be64(pb, mxf->body_partition_offset[i]);
1752
    }
1753

    
1754
    put_be32(pb, 0); // BodySID of footer partition
1755
    put_be64(pb, mxf->footer_partition_offset);
1756

    
1757
    put_be32(pb, url_ftell(pb) - pos + 4);
1758
}
1759

    
1760
static int mxf_write_footer(AVFormatContext *s)
1761
{
1762
    MXFContext *mxf = s->priv_data;
1763
    ByteIOContext *pb = s->pb;
1764

    
1765
    mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1766

    
1767
    mxf_write_klv_fill(s);
1768
    mxf->footer_partition_offset = url_ftell(pb);
1769
    if (mxf->edit_unit_byte_count) { // no need to repeat index
1770
        mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1771
    } else {
1772
        mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1773

    
1774
        mxf_write_klv_fill(s);
1775
        mxf_write_index_table_segment(s);
1776
    }
1777

    
1778
    mxf_write_klv_fill(s);
1779
    mxf_write_random_index_pack(s);
1780

    
1781
    if (!url_is_streamed(s->pb)) {
1782
        int index;
1783
        url_fseek(pb, 0, SEEK_SET);
1784
        if (s->oformat == &mxf_d10_muxer) {
1785
            mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1786
            index = 1;
1787
        } else if (mxf->edit_unit_byte_count) {
1788
            mxf_write_partition(s, 0, 2, header_closed_partition_key, 1);
1789
            index = 1;
1790
        } else {
1791
            mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1792
            index = 0;
1793
        }
1794
        if (index) {
1795
            mxf_write_klv_fill(s);
1796
            mxf_write_index_table_segment(s);
1797
        }
1798
    }
1799

    
1800
    ff_audio_interleave_close(s);
1801

    
1802
    av_freep(&mxf->index_entries);
1803
    av_freep(&mxf->body_partition_offset);
1804
    av_freep(&mxf->timecode_track->priv_data);
1805
    av_freep(&mxf->timecode_track);
1806

    
1807
    mxf_free(s);
1808

    
1809
    return 0;
1810
}
1811

    
1812
static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1813
{
1814
    AVPacketList *pktl;
1815
    int stream_count = 0;
1816
    int streams[MAX_STREAMS];
1817

    
1818
    memset(streams, 0, sizeof(streams));
1819
    pktl = s->packet_buffer;
1820
    while (pktl) {
1821
        //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1822
        if (!streams[pktl->pkt.stream_index])
1823
            stream_count++;
1824
        streams[pktl->pkt.stream_index]++;
1825
        pktl = pktl->next;
1826
    }
1827

    
1828
    if (stream_count && (s->nb_streams == stream_count || flush)) {
1829
        pktl = s->packet_buffer;
1830
        if (s->nb_streams != stream_count) {
1831
            AVPacketList *first = NULL;
1832
            AVPacketList *last = NULL;
1833
            // find first packet in edit unit
1834
            while (pktl) {
1835
                AVStream *st = s->streams[pktl->pkt.stream_index];
1836
                if (st->index == 0)
1837
                    break;
1838
                else if (!first)
1839
                    first = pktl;
1840
                last = pktl;
1841
                pktl = pktl->next;
1842
            }
1843
            if (last)
1844
                last->next = NULL;
1845
            // purge packet queue
1846
            while (pktl) {
1847
                AVPacketList *next = pktl->next;
1848
                av_free_packet(&pktl->pkt);
1849
                av_freep(&pktl);
1850
                pktl = next;
1851
            }
1852
            if (!first)
1853
                goto out;
1854
            pktl = first;
1855
        }
1856

    
1857
        *out = pktl->pkt;
1858
        //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1859
        s->packet_buffer = pktl->next;
1860
        av_freep(&pktl);
1861
        return 1;
1862
    } else {
1863
    out:
1864
        av_init_packet(out);
1865
        return 0;
1866
    }
1867
}
1868

    
1869
static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1870
{
1871
    MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1872
    MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1873

    
1874
    return next->dts > pkt->dts ||
1875
        (next->dts == pkt->dts && sc->order < sc2->order);
1876
}
1877

    
1878
static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1879
{
1880
    return ff_audio_rechunk_interleave(s, out, pkt, flush,
1881
                               mxf_interleave_get_packet, mxf_compare_timestamps);
1882
}
1883

    
1884
AVOutputFormat mxf_muxer = {
1885
    "mxf",
1886
    NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1887
    NULL,
1888
    "mxf",
1889
    sizeof(MXFContext),
1890
    CODEC_ID_PCM_S16LE,
1891
    CODEC_ID_MPEG2VIDEO,
1892
    mxf_write_header,
1893
    mxf_write_packet,
1894
    mxf_write_footer,
1895
    AVFMT_NOTIMESTAMPS,
1896
    NULL,
1897
    mxf_interleave,
1898
};
1899

    
1900
AVOutputFormat mxf_d10_muxer = {
1901
    "mxf_d10",
1902
    NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1903
    "application/mxf",
1904
    NULL,
1905
    sizeof(MXFContext),
1906
    CODEC_ID_PCM_S16LE,
1907
    CODEC_ID_MPEG2VIDEO,
1908
    mxf_write_header,
1909
    mxf_write_d10_packet,
1910
    mxf_write_footer,
1911
    AVFMT_NOTIMESTAMPS,
1912
    NULL,
1913
    mxf_interleave,
1914
};