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ffmpeg / libavformat / mxfenc.c @ ab91e84d

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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 },
107
      { 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 },
129
      { 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 },
134
      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    // D-10 525/60 NTSC 40mb/s
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
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      mxf_write_cdci_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    // D-10 625/50 PAL 30mb/s
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
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      mxf_write_cdci_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    // D-10 525/60 NTSC 30mb/s
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
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      mxf_write_cdci_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_generic_sound_desc },
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    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
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      { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
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      { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
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      NULL },
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};
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typedef struct MXFContext {
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    int64_t footer_partition_offset;
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    int essence_container_count;
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    AVRational time_base;
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    int header_written;
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    MXFIndexEntry *index_entries;
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    unsigned edit_units_count;
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    uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
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    uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
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    int last_indexed_edit_unit;
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    uint64_t 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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194
/**
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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 };
200
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 };
202
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
203
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 };
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static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
206

    
207
/**
208
 * partial key for header metadata
209
 */
210
static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
211
static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
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213
/**
214
 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
215
 */
216
static const MXFLocalTagPair mxf_local_tag_batch[] = {
217
    // preface set
218
    { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
219
    { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
220
    { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
221
    { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
222
    { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
223
    { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
224
    { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
225
    { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
226
    // Identification
227
    { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
228
    { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
229
    { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
230
    { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
231
    { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
232
    { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
233
    // Content Storage
234
    { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
235
    { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
236
    // Essence Container Data
237
    { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
238
    { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
239
    // Package
240
    { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
241
    { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
242
    { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
243
    { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
244
    { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
245
    // Track
246
    { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
247
    { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
248
    { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
249
    { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
250
    { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
251
    // Sequence
252
    { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
253
    { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
254
    { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
255
    // Source Clip
256
    { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
257
    { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
258
    { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
259
    // Timecode Component
260
    { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
261
    { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
262
    { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
263
    // File Descriptor
264
    { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
265
    { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
266
    { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
267
    { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
268
    // Generic Picture Essence Descriptor
269
    { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
270
    { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
271
    { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
272
    { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
273
    { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
274
    { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
275
    { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
276
    { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
277
    // CDCI Picture Essence Descriptor
278
    { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
279
    { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
280
    // Generic Sound Essence Descriptor
281
    { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
282
    { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
283
    { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
284
    { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
285
    { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
286
    // Index Table Segment
287
    { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
288
    { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
289
    { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
290
    { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
291
    { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
292
    { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
293
    { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
294
    { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
295
    // MPEG video Descriptor
296
    { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
297
    // Wave Audio Essence Descriptor
298
    { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
299
    { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
300
};
301

    
302
static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
303
{
304
    put_buffer(pb, uuid_base, 12);
305
    put_be16(pb, type);
306
    put_be16(pb, value);
307
}
308

    
309
static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
310
{
311
    put_buffer(pb, umid_base, 16);
312
    mxf_write_uuid(pb, type, value);
313
}
314

    
315
static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
316
{
317
    put_be32(pb, ref_count);
318
    put_be32(pb, 16);
319
}
320

    
321
static int klv_ber_length(uint64_t len)
322
{
323
    if (len < 128)
324
        return 1;
325
    else
326
        return (av_log2(len) >> 3) + 2;
327
}
328

    
329
static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
330
{
331
    // Determine the best BER size
332
    int size;
333
    if (len < 128) {
334
        //short form
335
        put_byte(pb, len);
336
        return 1;
337
    }
338

    
339
    size = (av_log2(len) >> 3) + 1;
340

    
341
    // long form
342
    put_byte(pb, 0x80 + size);
343
    while(size) {
344
        size--;
345
        put_byte(pb, len >> 8 * size & 0xff);
346
    }
347
    return 0;
348
}
349

    
350
static void klv_encode_ber4_length(ByteIOContext *pb, int len)
351
{
352
    put_byte(pb, 0x80 + 3);
353
    put_be24(pb, len);
354
}
355

    
356
/*
357
 * Get essence container ul index
358
 */
359
static int mxf_get_essence_container_ul_index(enum CodecID id)
360
{
361
    int i;
362
    for (i = 0; mxf_essence_mappings[i].id; i++)
363
        if (mxf_essence_mappings[i].id == id)
364
            return mxf_essence_mappings[i].index;
365
    return -1;
366
}
367

    
368
static void mxf_write_primer_pack(AVFormatContext *s)
369
{
370
    ByteIOContext *pb = s->pb;
371
    int local_tag_number, i = 0;
372

    
373
    local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
374

    
375
    put_buffer(pb, primer_pack_key, 16);
376
    klv_encode_ber_length(pb, local_tag_number * 18 + 8);
377

    
378
    put_be32(pb, local_tag_number); // local_tag num
379
    put_be32(pb, 18); // item size, always 18 according to the specs
380

    
381
    for (i = 0; i < local_tag_number; i++) {
382
        put_be16(pb, mxf_local_tag_batch[i].local_tag);
383
        put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
384
    }
385
}
386

    
387
static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
388
{
389
    put_be16(pb, tag);
390
    put_be16(pb, size);
391
}
392

    
393
static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
394
{
395
    put_buffer(pb, header_metadata_key, 13);
396
    put_be24(pb, value);
397
}
398

    
399
static void mxf_free(AVFormatContext *s)
400
{
401
    int i;
402

    
403
    for (i = 0; i < s->nb_streams; i++) {
404
        AVStream *st = s->streams[i];
405
        av_freep(&st->priv_data);
406
    }
407
}
408

    
409
static const MXFCodecUL *mxf_get_data_definition_ul(int type)
410
{
411
    const MXFCodecUL *uls = ff_mxf_data_definition_uls;
412
    while (uls->uid[0]) {
413
        if (type == uls->id)
414
            break;
415
        uls++;
416
    }
417
    return uls;
418
}
419

    
420
static void mxf_write_essence_container_refs(AVFormatContext *s)
421
{
422
    MXFContext *c = s->priv_data;
423
    ByteIOContext *pb = s->pb;
424
    int i;
425

    
426
    mxf_write_refs_count(pb, c->essence_container_count);
427
    av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
428
    for (i = 0; i < c->essence_container_count; i++) {
429
        MXFStreamContext *sc = s->streams[i]->priv_data;
430
        put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
431
    }
432
}
433

    
434
static void mxf_write_preface(AVFormatContext *s)
435
{
436
    MXFContext *mxf = s->priv_data;
437
    ByteIOContext *pb = s->pb;
438

    
439
    mxf_write_metadata_key(pb, 0x012f00);
440
    PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
441
    klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
442

    
443
    // write preface set uid
444
    mxf_write_local_tag(pb, 16, 0x3C0A);
445
    mxf_write_uuid(pb, Preface, 0);
446
    PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
447

    
448
    // last modified date
449
    mxf_write_local_tag(pb, 8, 0x3B02);
450
    put_be64(pb, mxf->timestamp);
451

    
452
    // write version
453
    mxf_write_local_tag(pb, 2, 0x3B05);
454
    put_be16(pb, 1);
455

    
456
    // write identification_refs
457
    mxf_write_local_tag(pb, 16 + 8, 0x3B06);
458
    mxf_write_refs_count(pb, 1);
459
    mxf_write_uuid(pb, Identification, 0);
460

    
461
    // write content_storage_refs
462
    mxf_write_local_tag(pb, 16, 0x3B03);
463
    mxf_write_uuid(pb, ContentStorage, 0);
464

    
465
    // operational pattern
466
    mxf_write_local_tag(pb, 16, 0x3B09);
467
    if (s->nb_streams > 1) {
468
        put_buffer(pb, op1a_ul, 14);
469
        put_be16(pb, 0x0900); // multi track
470
    } else {
471
        put_buffer(pb, op1a_ul, 16);
472
    }
473

    
474
    // write essence_container_refs
475
    mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
476
    mxf_write_essence_container_refs(s);
477

    
478
    // write dm_scheme_refs
479
    mxf_write_local_tag(pb, 8, 0x3B0B);
480
    put_be64(pb, 0);
481
}
482

    
483
/*
484
 * Write a local tag containing an ascii string as utf-16
485
 */
486
static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
487
{
488
    int i, size = strlen(value);
489
    mxf_write_local_tag(pb, size*2, tag);
490
    for (i = 0; i < size; i++)
491
        put_be16(pb, value[i]);
492
}
493

    
494
static void mxf_write_identification(AVFormatContext *s)
495
{
496
    MXFContext *mxf = s->priv_data;
497
    ByteIOContext *pb = s->pb;
498
    const char *company = "FFmpeg";
499
    const char *product = "OP1a Muxer";
500
    const char *version;
501
    int length;
502

    
503
    mxf_write_metadata_key(pb, 0x013000);
504
    PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
505

    
506
    version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
507
        "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
508
    length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
509
    klv_encode_ber_length(pb, length);
510

    
511
    // write uid
512
    mxf_write_local_tag(pb, 16, 0x3C0A);
513
    mxf_write_uuid(pb, Identification, 0);
514
    PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
515

    
516
    // write generation uid
517
    mxf_write_local_tag(pb, 16, 0x3C09);
518
    mxf_write_uuid(pb, Identification, 1);
519

    
520
    mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
521
    mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
522
    mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
523

    
524
    // write product uid
525
    mxf_write_local_tag(pb, 16, 0x3C05);
526
    mxf_write_uuid(pb, Identification, 2);
527

    
528
    // modification date
529
    mxf_write_local_tag(pb, 8, 0x3C06);
530
    put_be64(pb, mxf->timestamp);
531
}
532

    
533
static void mxf_write_content_storage(AVFormatContext *s)
534
{
535
    ByteIOContext *pb = s->pb;
536

    
537
    mxf_write_metadata_key(pb, 0x011800);
538
    PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
539
    klv_encode_ber_length(pb, 92);
540

    
541
    // write uid
542
    mxf_write_local_tag(pb, 16, 0x3C0A);
543
    mxf_write_uuid(pb, ContentStorage, 0);
544
    PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
545

    
546
    // write package reference
547
    mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
548
    mxf_write_refs_count(pb, 2);
549
    mxf_write_uuid(pb, MaterialPackage, 0);
550
    mxf_write_uuid(pb, SourcePackage, 0);
551

    
552
    // write essence container data
553
    mxf_write_local_tag(pb, 8 + 16, 0x1902);
554
    mxf_write_refs_count(pb, 1);
555
    mxf_write_uuid(pb, EssenceContainerData, 0);
556
}
557

    
558
static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
559
{
560
    MXFContext *mxf = s->priv_data;
561
    ByteIOContext *pb = s->pb;
562
    MXFStreamContext *sc = st->priv_data;
563

    
564
    mxf_write_metadata_key(pb, 0x013b00);
565
    PRINT_KEY(s, "track key", pb->buf_ptr - 16);
566
    klv_encode_ber_length(pb, 80);
567

    
568
    // write track uid
569
    mxf_write_local_tag(pb, 16, 0x3C0A);
570
    mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
571
    PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
572

    
573
    // write track id
574
    mxf_write_local_tag(pb, 4, 0x4801);
575
    put_be32(pb, st->index);
576

    
577
    // write track number
578
    mxf_write_local_tag(pb, 4, 0x4804);
579
    if (type == MaterialPackage)
580
        put_be32(pb, 0); // track number of material package is 0
581
    else
582
        put_buffer(pb, sc->track_essence_element_key + 12, 4);
583

    
584
    mxf_write_local_tag(pb, 8, 0x4B01);
585
    put_be32(pb, mxf->time_base.den);
586
    put_be32(pb, mxf->time_base.num);
587

    
588
    // write origin
589
    mxf_write_local_tag(pb, 8, 0x4B02);
590
    put_be64(pb, 0);
591

    
592
    // write sequence refs
593
    mxf_write_local_tag(pb, 16, 0x4803);
594
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
595
}
596

    
597
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 };
598

    
599
static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
600
{
601
    MXFContext *mxf = s->priv_data;
602
    ByteIOContext *pb = s->pb;
603

    
604
    // find data define uls
605
    mxf_write_local_tag(pb, 16, 0x0201);
606
    if (st == mxf->timecode_track)
607
        put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
608
    else {
609
        const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
610
        put_buffer(pb, data_def_ul->uid, 16);
611
    }
612

    
613
    // write duration
614
    mxf_write_local_tag(pb, 8, 0x0202);
615
    put_be64(pb, mxf->duration);
616
}
617

    
618
static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
619
{
620
    MXFContext *mxf = s->priv_data;
621
    ByteIOContext *pb = s->pb;
622
    enum MXFMetadataSetType component;
623

    
624
    mxf_write_metadata_key(pb, 0x010f00);
625
    PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
626
    klv_encode_ber_length(pb, 80);
627

    
628
    mxf_write_local_tag(pb, 16, 0x3C0A);
629
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
630

    
631
    PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
632
    mxf_write_common_fields(s, st);
633

    
634
    // write structural component
635
    mxf_write_local_tag(pb, 16 + 8, 0x1001);
636
    mxf_write_refs_count(pb, 1);
637
    if (st == mxf->timecode_track)
638
        component = TimecodeComponent;
639
    else if (type == MaterialPackage)
640
        component = SourceClip;
641
    else
642
        component = SourceClip+TypeBottom;
643
    mxf_write_uuid(pb, component, st->index);
644
}
645

    
646
static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st)
647
{
648
    MXFContext *mxf = s->priv_data;
649
    ByteIOContext *pb = s->pb;
650

    
651
    mxf_write_metadata_key(pb, 0x011400);
652
    klv_encode_ber_length(pb, 75);
653

    
654
    // UID
655
    mxf_write_local_tag(pb, 16, 0x3C0A);
656
    mxf_write_uuid(pb, TimecodeComponent, st->index);
657

    
658
    mxf_write_common_fields(s, st);
659

    
660
    // Start Time Code
661
    mxf_write_local_tag(pb, 8, 0x1501);
662
    put_be64(pb, mxf->timecode_start);
663

    
664
    // Rounded Time Code Base
665
    mxf_write_local_tag(pb, 2, 0x1502);
666
    put_be16(pb, mxf->timecode_base);
667

    
668
    // Drop Frame
669
    mxf_write_local_tag(pb, 1, 0x1503);
670
    put_byte(pb, mxf->timecode_drop_frame);
671
}
672

    
673
static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
674
{
675
    ByteIOContext *pb = s->pb;
676
    int i;
677

    
678
    mxf_write_metadata_key(pb, 0x011100);
679
    PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
680
    klv_encode_ber_length(pb, 108);
681

    
682
    // write uid
683
    mxf_write_local_tag(pb, 16, 0x3C0A);
684
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
685

    
686
    PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
687
    mxf_write_common_fields(s, st);
688

    
689
    // write start_position
690
    mxf_write_local_tag(pb, 8, 0x1201);
691
    put_be64(pb, 0);
692

    
693
    // write source package uid, end of the reference
694
    mxf_write_local_tag(pb, 32, 0x1101);
695
    if (type == SourcePackage) {
696
        for (i = 0; i < 4; i++)
697
            put_be64(pb, 0);
698
    } else
699
        mxf_write_umid(pb, SourcePackage, 0);
700

    
701
    // write source track id
702
    mxf_write_local_tag(pb, 4, 0x1102);
703
    if (type == SourcePackage)
704
        put_be32(pb, 0);
705
    else
706
        put_be32(pb, st->index);
707
}
708

    
709
static void mxf_write_multi_descriptor(AVFormatContext *s)
710
{
711
    MXFContext *mxf = s->priv_data;
712
    ByteIOContext *pb = s->pb;
713
    const uint8_t *ul;
714
    int i;
715

    
716
    mxf_write_metadata_key(pb, 0x014400);
717
    PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
718
    klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
719

    
720
    mxf_write_local_tag(pb, 16, 0x3C0A);
721
    mxf_write_uuid(pb, MultipleDescriptor, 0);
722
    PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
723

    
724
    // write sample rate
725
    mxf_write_local_tag(pb, 8, 0x3001);
726
    put_be32(pb, mxf->time_base.den);
727
    put_be32(pb, mxf->time_base.num);
728

    
729
    // write essence container ul
730
    mxf_write_local_tag(pb, 16, 0x3004);
731
    if (mxf->essence_container_count > 1)
732
        ul = multiple_desc_ul;
733
    else {
734
        MXFStreamContext *sc = s->streams[0]->priv_data;
735
        ul = mxf_essence_container_uls[sc->index].container_ul;
736
    }
737
    put_buffer(pb, ul, 16);
738

    
739
    // write sub descriptor refs
740
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
741
    mxf_write_refs_count(pb, s->nb_streams);
742
    for (i = 0; i < s->nb_streams; i++)
743
        mxf_write_uuid(pb, SubDescriptor, i);
744
}
745

    
746
static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
747
{
748
    MXFContext *mxf = s->priv_data;
749
    MXFStreamContext *sc = st->priv_data;
750
    ByteIOContext *pb = s->pb;
751

    
752
    put_buffer(pb, key, 16);
753
    klv_encode_ber_length(pb, size);
754

    
755
    mxf_write_local_tag(pb, 16, 0x3C0A);
756
    mxf_write_uuid(pb, SubDescriptor, st->index);
757

    
758
    mxf_write_local_tag(pb, 4, 0x3006);
759
    put_be32(pb, st->index);
760

    
761
    mxf_write_local_tag(pb, 8, 0x3001);
762
    put_be32(pb, mxf->time_base.den);
763
    put_be32(pb, mxf->time_base.num);
764

    
765
    mxf_write_local_tag(pb, 16, 0x3004);
766
    put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
767
}
768

    
769
static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
770
static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
771
static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
772
static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
773
static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
774

    
775
static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
776
{
777
    MXFStreamContext *sc = st->priv_data;
778
    ByteIOContext *pb = s->pb;
779
    int stored_height = (st->codec->height+15)/16*16;
780
    int display_height;
781
    AVRational dar;
782
    int f1, f2;
783

    
784
    mxf_write_generic_desc(s, st, key, size);
785

    
786
    mxf_write_local_tag(pb, 4, 0x3203);
787
    put_be32(pb, st->codec->width);
788

    
789
    mxf_write_local_tag(pb, 4, 0x3202);
790
    put_be32(pb, stored_height>>sc->interlaced);
791

    
792
    mxf_write_local_tag(pb, 4, 0x3209);
793
    put_be32(pb, st->codec->width);
794

    
795
    if (st->codec->height == 608) // PAL + VBI
796
        display_height = 576;
797
    else if (st->codec->height == 512)  // NTSC + VBI
798
        display_height = 486;
799
    else
800
        display_height = st->codec->height;
801

    
802
    mxf_write_local_tag(pb, 4, 0x3208);
803
    put_be32(pb, display_height>>sc->interlaced);
804

    
805
    // component depth
806
    mxf_write_local_tag(pb, 4, 0x3301);
807
    put_be32(pb, 8);
808

    
809
    // horizontal subsampling
810
    mxf_write_local_tag(pb, 4, 0x3302);
811
    put_be32(pb, 2);
812

    
813
    // frame layout
814
    mxf_write_local_tag(pb, 1, 0x320C);
815
    put_byte(pb, sc->interlaced);
816

    
817
    // video line map
818
    switch (st->codec->height) {
819
    case  576: f1 = 23; f2 = 336; break;
820
    case  608: f1 =  7; f2 = 320; break;
821
    case  480: f1 = 20; f2 = 283; break;
822
    case  512: f1 =  7; f2 = 270; break;
823
    case  720: f1 = 26; f2 =   0; break; // progressive
824
    case 1080: f1 = 21; f2 = 584; break;
825
    default:   f1 =  0; f2 =   0; break;
826
    }
827

    
828
    if (!sc->interlaced) {
829
        f2  = 0;
830
        f1 *= 2;
831
    }
832

    
833
    mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
834
    put_be32(pb, sc->interlaced ? 2 : 1);
835
    put_be32(pb, 4);
836
    put_be32(pb, f1);
837
    if (sc->interlaced)
838
        put_be32(pb, f2);
839

    
840
    av_reduce(&dar.num, &dar.den,
841
              st->codec->width*st->codec->sample_aspect_ratio.num,
842
              st->codec->height*st->codec->sample_aspect_ratio.den,
843
              1024*1024);
844

    
845
    mxf_write_local_tag(pb, 8, 0x320E);
846
    put_be32(pb, dar.num);
847
    put_be32(pb, dar.den);
848

    
849
    mxf_write_local_tag(pb, 16, 0x3201);
850
    put_buffer(pb, *sc->codec_ul, 16);
851
}
852

    
853
static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
854
{
855
    MXFStreamContext *sc = st->priv_data;
856
    mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 161+sc->interlaced*4);
857
}
858

    
859
static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
860
{
861
    MXFStreamContext *sc = st->priv_data;
862
    ByteIOContext *pb = s->pb;
863

    
864
    mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 169+sc->interlaced*4);
865

    
866
    // bit rate
867
    mxf_write_local_tag(pb, 4, 0x8000);
868
    put_be32(pb, st->codec->bit_rate);
869
}
870

    
871
static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
872
{
873
    ByteIOContext *pb = s->pb;
874

    
875
    mxf_write_generic_desc(s, st, key, size);
876

    
877
    // audio locked
878
    mxf_write_local_tag(pb, 1, 0x3D02);
879
    put_byte(pb, 1);
880

    
881
    // write audio sampling rate
882
    mxf_write_local_tag(pb, 8, 0x3D03);
883
    put_be32(pb, st->codec->sample_rate);
884
    put_be32(pb, 1);
885

    
886
    mxf_write_local_tag(pb, 4, 0x3D07);
887
    put_be32(pb, st->codec->channels);
888

    
889
    mxf_write_local_tag(pb, 4, 0x3D01);
890
    put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
891
}
892

    
893
static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
894
{
895
    ByteIOContext *pb = s->pb;
896

    
897
    mxf_write_generic_sound_common(s, st, key, size);
898

    
899
    mxf_write_local_tag(pb, 2, 0x3D0A);
900
    put_be16(pb, st->codec->block_align);
901

    
902
    // avg bytes per sec
903
    mxf_write_local_tag(pb, 4, 0x3D09);
904
    put_be32(pb, st->codec->block_align*st->codec->sample_rate);
905
}
906

    
907
static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
908
{
909
    mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 107);
910
}
911

    
912
static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
913
{
914
    mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 107);
915
}
916

    
917
static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
918
{
919
    mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 93);
920
}
921

    
922
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
923
{
924
    MXFContext *mxf = s->priv_data;
925
    ByteIOContext *pb = s->pb;
926
    int i, track_count;
927

    
928
    if (type == MaterialPackage) {
929
        track_count = s->nb_streams + 1; // add timecode track
930
        mxf_write_metadata_key(pb, 0x013600);
931
        PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
932
        klv_encode_ber_length(pb, 92 + 16*track_count);
933
    } else {
934
        track_count = s->nb_streams;
935
        mxf_write_metadata_key(pb, 0x013700);
936
        PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
937
        klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
938
    }
939

    
940
    // write uid
941
    mxf_write_local_tag(pb, 16, 0x3C0A);
942
    mxf_write_uuid(pb, type, 0);
943
    av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
944
    PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
945

    
946
    // write package umid
947
    mxf_write_local_tag(pb, 32, 0x4401);
948
    mxf_write_umid(pb, type, 0);
949
    PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
950

    
951
    // package creation date
952
    mxf_write_local_tag(pb, 8, 0x4405);
953
    put_be64(pb, mxf->timestamp);
954

    
955
    // package modified date
956
    mxf_write_local_tag(pb, 8, 0x4404);
957
    put_be64(pb, mxf->timestamp);
958

    
959
    // write track refs
960
    mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
961
    mxf_write_refs_count(pb, track_count);
962
    for (i = 0; i < s->nb_streams; i++)
963
        mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
964
    if (type == MaterialPackage)
965
        mxf_write_uuid(pb, Track, s->nb_streams); // timecode track
966

    
967
    // write multiple descriptor reference
968
    if (type == SourcePackage) {
969
        mxf_write_local_tag(pb, 16, 0x4701);
970
        if (s->nb_streams > 1) {
971
            mxf_write_uuid(pb, MultipleDescriptor, 0);
972
            mxf_write_multi_descriptor(s);
973
        } else
974
            mxf_write_uuid(pb, SubDescriptor, 0);
975
    } else {
976
        // write timecode track
977
        mxf_write_track(s, mxf->timecode_track, type);
978
        mxf_write_sequence(s, mxf->timecode_track, type);
979
        mxf_write_timecode_component(s, mxf->timecode_track);
980
    }
981

    
982
    for (i = 0; i < s->nb_streams; i++) {
983
        AVStream *st = s->streams[i];
984
        mxf_write_track(s, st, type);
985
        mxf_write_sequence(s, st, type);
986
        mxf_write_structural_component(s, st, type);
987

    
988
        if (type == SourcePackage) {
989
            MXFStreamContext *sc = st->priv_data;
990
            mxf_essence_container_uls[sc->index].write_desc(s, st);
991
        }
992
    }
993
}
994

    
995
static int mxf_write_essence_container_data(AVFormatContext *s)
996
{
997
    ByteIOContext *pb = s->pb;
998

    
999
    mxf_write_metadata_key(pb, 0x012300);
1000
    klv_encode_ber_length(pb, 72);
1001

    
1002
    mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1003
    mxf_write_uuid(pb, EssenceContainerData, 0);
1004

    
1005
    mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1006
    mxf_write_umid(pb, SourcePackage, 0);
1007

    
1008
    mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1009
    put_be32(pb, 1);
1010

    
1011
    mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1012
    put_be32(pb, 2);
1013

    
1014
    return 0;
1015
}
1016

    
1017
static int mxf_write_header_metadata_sets(AVFormatContext *s)
1018
{
1019
    mxf_write_preface(s);
1020
    mxf_write_identification(s);
1021
    mxf_write_content_storage(s);
1022
    mxf_write_package(s, MaterialPackage);
1023
    mxf_write_package(s, SourcePackage);
1024
    mxf_write_essence_container_data(s);
1025
    return 0;
1026
}
1027

    
1028
static unsigned klv_fill_size(uint64_t size)
1029
{
1030
    unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1031
    if (pad < 20) // smallest fill item possible
1032
        return pad + KAG_SIZE;
1033
    else
1034
        return pad & (KAG_SIZE-1);
1035
}
1036

    
1037
static void mxf_write_index_table_segment(AVFormatContext *s)
1038
{
1039
    MXFContext *mxf = s->priv_data;
1040
    ByteIOContext *pb = s->pb;
1041
    int i, j;
1042
    int temporal_reordering = 0;
1043
    int key_index = mxf->last_key_index;
1044

    
1045
    av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1046

    
1047
    if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1048
        return;
1049

    
1050
    put_buffer(pb, index_table_segment_key, 16);
1051

    
1052
    if (mxf->edit_unit_byte_count) {
1053
        klv_encode_ber_length(pb, 85);
1054
    } else {
1055
        klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1056
                              12+mxf->edit_units_count*(11+mxf->slice_count*4));
1057
    }
1058

    
1059
    // instance id
1060
    mxf_write_local_tag(pb, 16, 0x3C0A);
1061
    mxf_write_uuid(pb, IndexTableSegment, 0);
1062

    
1063
    // index edit rate
1064
    mxf_write_local_tag(pb, 8, 0x3F0B);
1065
    put_be32(pb, mxf->time_base.num);
1066
    put_be32(pb, mxf->time_base.den);
1067

    
1068
    // index start position
1069
    mxf_write_local_tag(pb, 8, 0x3F0C);
1070
    put_be64(pb, mxf->last_indexed_edit_unit);
1071

    
1072
    // index duration
1073
    mxf_write_local_tag(pb, 8, 0x3F0D);
1074
    put_be64(pb, mxf->edit_units_count);
1075

    
1076
    // edit unit byte count
1077
    mxf_write_local_tag(pb, 4, 0x3F05);
1078
    put_be32(pb, mxf->edit_unit_byte_count);
1079

    
1080
    // index sid
1081
    mxf_write_local_tag(pb, 4, 0x3F06);
1082
    put_be32(pb, 2);
1083

    
1084
    // body sid
1085
    mxf_write_local_tag(pb, 4, 0x3F07);
1086
    put_be32(pb, 1);
1087

    
1088
    // real slice count - 1
1089
    mxf_write_local_tag(pb, 1, 0x3F08);
1090
    put_byte(pb, mxf->slice_count);
1091

    
1092
    if (!mxf->edit_unit_byte_count) {
1093
        // delta entry array
1094
        mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1095
        put_be32(pb, s->nb_streams+1); // num of entries
1096
        put_be32(pb, 6);               // size of one entry
1097
        // write system item delta entry
1098
        put_byte(pb, 0);
1099
        put_byte(pb, 0); // slice entry
1100
        put_be32(pb, 0); // element delta
1101
        for (i = 0; i < s->nb_streams; i++) {
1102
            AVStream *st = s->streams[i];
1103
            MXFStreamContext *sc = st->priv_data;
1104
            put_byte(pb, sc->temporal_reordering);
1105
            if (sc->temporal_reordering)
1106
                temporal_reordering = 1;
1107
            if (i == 0) { // video track
1108
                put_byte(pb, 0); // slice number
1109
                put_be32(pb, KAG_SIZE); // system item size including klv fill
1110
            } else { // audio track
1111
                unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1112
                audio_frame_size += klv_fill_size(audio_frame_size);
1113
                put_byte(pb, 1);
1114
                put_be32(pb, (i-1)*audio_frame_size); // element delta
1115
            }
1116
        }
1117

    
1118
        mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1119
        put_be32(pb, mxf->edit_units_count);  // num of entries
1120
        put_be32(pb, 11+mxf->slice_count*4);  // size of one entry
1121
        for (i = 0; i < mxf->edit_units_count; i++) {
1122
            if (temporal_reordering) {
1123
                int temporal_offset = 0;
1124
                for (j = i+1; j < mxf->edit_units_count; j++) {
1125
                    temporal_offset++;
1126
                    if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1127
                        // next is not b, so is reordered
1128
                        if (!(mxf->index_entries[i+1].flags & 0x10)) {
1129
                            if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
1130
                                temporal_offset = 0;
1131
                            else
1132
                                temporal_offset = -temporal_offset;
1133
                        }
1134
                        break;
1135
                    }
1136
                }
1137
                put_byte(pb, temporal_offset);
1138
            } else
1139
                put_byte(pb, 0);
1140
            if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1141
                mxf->last_key_index = key_index;
1142
                key_index = i;
1143
            }
1144
            if (mxf->index_entries[i].flags & 0x10 && // backward prediction
1145
                !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
1146
                put_byte(pb, mxf->last_key_index - i);
1147
            } else {
1148
                put_byte(pb, key_index - i); // key frame offset
1149
                if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1150
                    mxf->last_key_index = key_index;
1151
            }
1152
            put_byte(pb, mxf->index_entries[i].flags);
1153
            // stream offset
1154
            put_be64(pb, mxf->index_entries[i].offset - mxf->first_edit_unit_offset);
1155
            if (s->nb_streams > 1)
1156
                put_be32(pb, mxf->index_entries[i].slice_offset);
1157
        }
1158

    
1159
        mxf->last_key_index = key_index - mxf->edit_units_count;
1160
        mxf->last_indexed_edit_unit += mxf->edit_units_count;
1161
        mxf->edit_units_count = 0;
1162
    }
1163
}
1164

    
1165
static void mxf_write_klv_fill(AVFormatContext *s)
1166
{
1167
    unsigned pad = klv_fill_size(url_ftell(s->pb));
1168
    if (pad) {
1169
        put_buffer(s->pb, klv_fill_key, 16);
1170
        pad -= 16 + 4;
1171
        klv_encode_ber4_length(s->pb, pad);
1172
        for (; pad; pad--)
1173
            put_byte(s->pb, 0);
1174
        assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1175
    }
1176
}
1177

    
1178
static void mxf_write_partition(AVFormatContext *s, int bodysid,
1179
                                int indexsid,
1180
                                const uint8_t *key, int write_metadata)
1181
{
1182
    MXFContext *mxf = s->priv_data;
1183
    ByteIOContext *pb = s->pb;
1184
    int64_t header_byte_count_offset;
1185
    unsigned index_byte_count = 0;
1186
    uint64_t partition_offset = url_ftell(pb);
1187

    
1188
    if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1189
        index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1190
            12+mxf->edit_units_count*(11+mxf->slice_count*4);
1191
    else if (mxf->edit_unit_byte_count && indexsid)
1192
        index_byte_count = 85;
1193

    
1194
    if (index_byte_count) {
1195
        // add encoded ber length
1196
        index_byte_count += 16 + klv_ber_length(index_byte_count);
1197
        index_byte_count += klv_fill_size(index_byte_count);
1198
    }
1199

    
1200
    if (!memcmp(key, body_partition_key, 16)) {
1201
        mxf->body_partition_offset =
1202
            av_realloc(mxf->body_partition_offset,
1203
                       (mxf->body_partitions_count+1)*
1204
                       sizeof(*mxf->body_partition_offset));
1205
        mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1206
    }
1207

    
1208
    // write klv
1209
    put_buffer(pb, key, 16);
1210
    klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1211

    
1212
    // write partition value
1213
    put_be16(pb, 1); // majorVersion
1214
    put_be16(pb, 2); // minorVersion
1215
    put_be32(pb, KAG_SIZE); // KAGSize
1216

    
1217
    put_be64(pb, partition_offset); // ThisPartition
1218

    
1219
    if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1220
        put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1221
    else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1222
        put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1223
    else
1224
        put_be64(pb, 0);
1225

    
1226
    put_be64(pb, mxf->footer_partition_offset); // footerPartition
1227

    
1228
    // set offset
1229
    header_byte_count_offset = url_ftell(pb);
1230
    put_be64(pb, 0); // headerByteCount, update later
1231

    
1232
    // indexTable
1233
    put_be64(pb, index_byte_count); // indexByteCount
1234
    put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1235

    
1236
    // BodyOffset
1237
    if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1238
        uint64_t partition_end = url_ftell(pb) + 8 + 4 + 16 + 8 +
1239
            16*mxf->essence_container_count;
1240
        put_be64(pb, partition_end + klv_fill_size(partition_end) +
1241
                 index_byte_count - mxf->first_edit_unit_offset);
1242
    } else
1243
        put_be64(pb, 0);
1244

    
1245
    put_be32(pb, bodysid); // bodySID
1246

    
1247
    // operational pattern
1248
    if (s->nb_streams > 1) {
1249
        put_buffer(pb, op1a_ul, 14);
1250
        put_be16(pb, 0x0900); // multi track
1251
    } else {
1252
        put_buffer(pb, op1a_ul, 16);
1253
    }
1254

    
1255
    // essence container
1256
    mxf_write_essence_container_refs(s);
1257

    
1258
    if (write_metadata) {
1259
        // mark the start of the headermetadata and calculate metadata size
1260
        int64_t pos, start;
1261
        unsigned header_byte_count;
1262

    
1263
        mxf_write_klv_fill(s);
1264
        start = url_ftell(s->pb);
1265
        mxf_write_primer_pack(s);
1266
        mxf_write_header_metadata_sets(s);
1267
        pos = url_ftell(s->pb);
1268
        header_byte_count = pos - start + klv_fill_size(pos);
1269

    
1270
        // update header_byte_count
1271
        url_fseek(pb, header_byte_count_offset, SEEK_SET);
1272
        put_be64(pb, header_byte_count);
1273
        url_fseek(pb, pos, SEEK_SET);
1274
    }
1275

    
1276
    put_flush_packet(pb);
1277
}
1278

    
1279
static const UID mxf_mpeg2_codec_uls[] = {
1280
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1281
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1282
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1283
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1284
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1285
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1286
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1287
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1288
};
1289

    
1290
static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1291
{
1292
    if (avctx->profile == 4) { // Main
1293
        if (avctx->level == 8) // Main
1294
            return avctx->gop_size ?
1295
                &mxf_mpeg2_codec_uls[1] :
1296
                &mxf_mpeg2_codec_uls[0];
1297
        else if (avctx->level == 4) // High
1298
            return avctx->gop_size ?
1299
                &mxf_mpeg2_codec_uls[5] :
1300
                &mxf_mpeg2_codec_uls[4];
1301
    } else if (avctx->profile == 0) { // 422
1302
        if (avctx->level == 5) // Main
1303
            return avctx->gop_size ?
1304
                &mxf_mpeg2_codec_uls[3] :
1305
                &mxf_mpeg2_codec_uls[2];
1306
        else if (avctx->level == 2) // High
1307
            return avctx->gop_size ?
1308
                &mxf_mpeg2_codec_uls[7] :
1309
                &mxf_mpeg2_codec_uls[6];
1310
    }
1311
    return NULL;
1312
}
1313

    
1314
static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1315
{
1316
    MXFStreamContext *sc = st->priv_data;
1317
    MXFContext *mxf = s->priv_data;
1318
    uint32_t c = -1;
1319
    int i;
1320

    
1321
    *flags = 0;
1322

    
1323
    for(i = 0; i < pkt->size - 4; i++) {
1324
        c = (c<<8) + pkt->data[i];
1325
        if (c == 0x1B5) {
1326
            if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1327
                st->codec->profile = pkt->data[i+1] & 0x07;
1328
                st->codec->level   = pkt->data[i+2] >> 4;
1329
            } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1330
                sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1331
                break;
1332
            }
1333
        } else if (c == 0x1b8) { // gop
1334
            if (i + 4 < pkt->size) {
1335
                if (pkt->data[i+4]>>6 & 0x01) // closed
1336
                    *flags |= 0x80; // random access
1337
                if (!mxf->header_written) {
1338
                    unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1339
                    unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1340
                    unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1341
                    unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1342
                    mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1343
                    mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1344
                        mxf->timecode_base + frames;
1345
                    if (mxf->timecode_drop_frame) {
1346
                        unsigned tminutes = 60 * hours + minutes;
1347
                        mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1348
                    }
1349
                    av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1350
                           hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1351
                }
1352
            }
1353
        } else if (c == 0x1b3) { // seq
1354
            *flags |= 0x40;
1355
        } else if (c == 0x100) { // pic
1356
            int pict_type = (pkt->data[i+2]>>3) & 0x07;
1357
            if (pict_type == 2) { // P frame
1358
                *flags |= 0x22;
1359
                st->codec->gop_size = 1;
1360
            } else if (pict_type == 3) { // B frame
1361
                *flags |= 0x33;
1362
                sc->temporal_reordering = -1;
1363
            } else if (!pict_type) {
1364
                av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1365
                return 0;
1366
            }
1367
        }
1368
    }
1369
    if (s->oformat != &mxf_d10_muxer)
1370
        sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1371
    return !!sc->codec_ul;
1372
}
1373

    
1374
static uint64_t mxf_parse_timestamp(time_t timestamp)
1375
{
1376
    struct tm *time = localtime(&timestamp);
1377
    return (uint64_t)(time->tm_year+1900) << 48 |
1378
           (uint64_t)(time->tm_mon+1)     << 40 |
1379
           (uint64_t) time->tm_mday       << 32 |
1380
                      time->tm_hour       << 24 |
1381
                      time->tm_min        << 16 |
1382
                      time->tm_sec        << 8;
1383
}
1384

    
1385
static int mxf_write_header(AVFormatContext *s)
1386
{
1387
    MXFContext *mxf = s->priv_data;
1388
    int i;
1389
    uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1390
    const int *samples_per_frame = NULL;
1391

    
1392
    for (i = 0; i < s->nb_streams; i++) {
1393
        AVStream *st = s->streams[i];
1394
        MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1395
        if (!sc)
1396
            return AVERROR(ENOMEM);
1397
        st->priv_data = sc;
1398

    
1399
        if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1400
            if (i != 0) {
1401
                av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1402
                return -1;
1403
            }
1404
            if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1405
                samples_per_frame = PAL_samples_per_frame;
1406
                mxf->time_base = (AVRational){ 1, 25 };
1407
                mxf->timecode_base = 25;
1408
            } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1409
                samples_per_frame = NTSC_samples_per_frame;
1410
                mxf->time_base = (AVRational){ 1001, 30000 };
1411
                mxf->timecode_base = 30;
1412
            } else {
1413
                av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1414
                return -1;
1415
            }
1416
            av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1417
            if (s->oformat == &mxf_d10_muxer) {
1418
                if (st->codec->bit_rate == 50000000)
1419
                    if (mxf->time_base.den == 25) sc->index = 3;
1420
                    else                          sc->index = 5;
1421
                else if (st->codec->bit_rate == 40000000)
1422
                    if (mxf->time_base.den == 25) sc->index = 7;
1423
                    else                          sc->index = 9;
1424
                else if (st->codec->bit_rate == 30000000)
1425
                    if (mxf->time_base.den == 25) sc->index = 11;
1426
                    else                          sc->index = 13;
1427
                else {
1428
                    av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1429
                    return -1;
1430
                }
1431

    
1432
                mxf->edit_unit_byte_count = KAG_SIZE; // system element
1433
                mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1434
                    mxf->time_base.num / (8*mxf->time_base.den);
1435
                mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1436
                mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1437
                mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1438
            }
1439
        } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1440
            if (st->codec->sample_rate != 48000) {
1441
                av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1442
                return -1;
1443
            }
1444
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1445
            if (s->oformat == &mxf_d10_muxer) {
1446
                if (st->index != 1) {
1447
                    av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1448
                    return -1;
1449
                }
1450
                if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1451
                    st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1452
                    av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1453
                }
1454
                sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1455
            } else
1456
            mxf->slice_count = 1;
1457
        }
1458

    
1459
        if (!sc->index) {
1460
            sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1461
            if (sc->index == -1) {
1462
                av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1463
                       "codec not currently supported in container\n", i);
1464
                return -1;
1465
            }
1466
        }
1467

    
1468
        sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1469

    
1470
        if (!present[sc->index]) {
1471
            present[sc->index] = 1;
1472
            mxf->essence_container_count++;
1473
        } else
1474
            present[sc->index]++;
1475

    
1476
        memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1477
        sc->track_essence_element_key[15] = present[sc->index];
1478
        PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1479
    }
1480

    
1481
    if (s->oformat == &mxf_d10_muxer) {
1482
        mxf->essence_container_count = 1;
1483
    }
1484

    
1485
    for (i = 0; i < s->nb_streams; i++) {
1486
        MXFStreamContext *sc = s->streams[i]->priv_data;
1487
        // update element count
1488
        sc->track_essence_element_key[13] = present[sc->index];
1489
        sc->order = AV_RB32(sc->track_essence_element_key+12);
1490
    }
1491

    
1492
    mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1493
    mxf->duration = -1;
1494

    
1495
    mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1496
    if (!mxf->timecode_track)
1497
        return AVERROR(ENOMEM);
1498
    mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1499
    if (!mxf->timecode_track->priv_data)
1500
        return AVERROR(ENOMEM);
1501
    mxf->timecode_track->index = s->nb_streams;
1502

    
1503
    if (!samples_per_frame)
1504
        samples_per_frame = PAL_samples_per_frame;
1505

    
1506
    if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1507
        return -1;
1508

    
1509
    return 0;
1510
}
1511

    
1512
static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1513
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 };
1514

    
1515
static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1516
{
1517
    return (0                                    << 31) | // color frame flag
1518
           (0                                    << 30) | // drop  frame flag
1519
           ( ((frame % fps) / 10)                << 28) | // tens  of frames
1520
           ( ((frame % fps) % 10)                << 24) | // units of frames
1521
           (0                                    << 23) | // field phase (NTSC), b0 (PAL)
1522
           ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
1523
           ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
1524
           (0                                    << 15) | // b0 (NTSC), b2 (PAL)
1525
           ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
1526
           ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
1527
           (0                                    <<  7) | // b1
1528
           (0                                    <<  6) | // b2 (NSC), field phase (PAL)
1529
           ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
1530
           (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
1531
}
1532

    
1533
static void mxf_write_system_item(AVFormatContext *s)
1534
{
1535
    MXFContext *mxf = s->priv_data;
1536
    ByteIOContext *pb = s->pb;
1537
    unsigned frame;
1538
    uint32_t time_code;
1539

    
1540
    frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1541

    
1542
    // write system metadata pack
1543
    put_buffer(pb, system_metadata_pack_key, 16);
1544
    klv_encode_ber4_length(pb, 57);
1545
    put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1546
    put_byte(pb, 0x04); // content package rate
1547
    put_byte(pb, 0x00); // content package type
1548
    put_be16(pb, 0x00); // channel handle
1549
    put_be16(pb, frame); // continuity count
1550
    if (mxf->essence_container_count > 1)
1551
        put_buffer(pb, multiple_desc_ul, 16);
1552
    else {
1553
        MXFStreamContext *sc = s->streams[0]->priv_data;
1554
        put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1555
    }
1556
    put_byte(pb, 0);
1557
    put_be64(pb, 0);
1558
    put_be64(pb, 0); // creation date/time stamp
1559

    
1560
    put_byte(pb, 0x81); // SMPTE 12M time code
1561
    time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1562
    put_be32(pb, time_code);
1563
    put_be32(pb, 0); // binary group data
1564
    put_be64(pb, 0);
1565

    
1566
    // write system metadata package set
1567
    put_buffer(pb, system_metadata_package_set_key, 16);
1568
    klv_encode_ber4_length(pb, 35);
1569
    put_byte(pb, 0x83); // UMID
1570
    put_be16(pb, 0x20);
1571
    mxf_write_umid(pb, SourcePackage, 0);
1572
}
1573

    
1574
static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1575
{
1576
    MXFContext *mxf = s->priv_data;
1577
    ByteIOContext *pb = s->pb;
1578
    int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1579
        (8*mxf->time_base.den); // frame size
1580
    int pad;
1581

    
1582
    packet_size += 16 + 4;
1583
    packet_size += klv_fill_size(packet_size);
1584

    
1585
    klv_encode_ber4_length(pb, pkt->size);
1586
    put_buffer(pb, pkt->data, pkt->size);
1587

    
1588
    // ensure CBR muxing by padding to correct video frame size
1589
    pad = packet_size - pkt->size - 16 - 4;
1590
    if (pad > 20) {
1591
        put_buffer(s->pb, klv_fill_key, 16);
1592
        pad -= 16 + 4;
1593
        klv_encode_ber4_length(s->pb, pad);
1594
        for (; pad; pad--)
1595
            put_byte(s->pb, 0);
1596
        assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1597
    } else {
1598
        av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1599
        for (; pad > 0; pad--)
1600
            put_byte(s->pb, 0);
1601
    }
1602
}
1603

    
1604
static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1605
{
1606
    MXFContext *mxf = s->priv_data;
1607
    ByteIOContext *pb = s->pb;
1608
    int frame_size = (pkt->size<<3) /
1609
        (st->codec->channels*av_get_bits_per_sample(st->codec->codec_id));
1610
    uint8_t *samples = pkt->data;
1611
    uint8_t *end = pkt->data + pkt->size;
1612
    int i;
1613

    
1614
    klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1615

    
1616
    put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1617
    put_le16(pb, frame_size);
1618
    put_byte(pb, (1<<st->codec->channels)-1);
1619

    
1620
    while (samples < end) {
1621
        for (i = 0; i < st->codec->channels; i++) {
1622
            uint32_t sample;
1623
            if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1624
                sample = (AV_RL24(samples)<< 4)|((samples==pkt->data)<<3) | i;
1625
                samples += 3;
1626
            } else {
1627
                sample = (AV_RL16(samples)<<12)|((samples==pkt->data)<<3) | i;
1628
                samples += 2;
1629
            }
1630
            put_le32(pb, sample);
1631
        }
1632
        for (; i < 8; i++)
1633
            put_le32(pb, 0);
1634
    }
1635
}
1636

    
1637
static int mxf_write_d10_packet(AVFormatContext *s, AVPacket *pkt)
1638
{
1639
    MXFContext *mxf = s->priv_data;
1640
    ByteIOContext *pb = s->pb;
1641
    AVStream *st = s->streams[pkt->stream_index];
1642
    MXFStreamContext *sc = st->priv_data;
1643
    int flags = 0;
1644

    
1645
    if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1646
        if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1647
            av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1648
            return -1;
1649
        }
1650
    }
1651

    
1652
    if (!mxf->header_written) {
1653
        mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1654
        mxf->header_written = 1;
1655
        mxf_write_klv_fill(s);
1656
        mxf_write_index_table_segment(s);
1657
    }
1658

    
1659
    if (st->index == 0) {
1660
        mxf_write_klv_fill(s);
1661
        mxf_write_system_item(s);
1662

    
1663
        mxf->edit_units_count++;
1664
    }
1665

    
1666
    mxf_write_klv_fill(s);
1667
    put_buffer(pb, sc->track_essence_element_key, 16); // write key
1668
    if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1669
        mxf_write_d10_video_packet(s, st, pkt);
1670
    else
1671
        mxf_write_d10_audio_packet(s, st, pkt);
1672

    
1673
    put_flush_packet(pb);
1674

    
1675
    return 0;
1676
}
1677

    
1678
static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1679
{
1680
    MXFContext *mxf = s->priv_data;
1681
    ByteIOContext *pb = s->pb;
1682
    AVStream *st = s->streams[pkt->stream_index];
1683
    MXFStreamContext *sc = st->priv_data;
1684
    int flags = 0;
1685

    
1686
    if (!(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1687
        mxf->index_entries = av_realloc(mxf->index_entries,
1688
            (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1689
        if (!mxf->index_entries) {
1690
            av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1691
            return -1;
1692
        }
1693
    }
1694

    
1695
    if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1696
        if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1697
            av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1698
            return -1;
1699
        }
1700
    }
1701

    
1702
    if (!mxf->header_written) {
1703
        mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1704
        mxf->header_written = 1;
1705
    }
1706

    
1707
    if (st->index == 0) {
1708
        if ((!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1709
            !(flags & 0x33)) { // I frame, Gop start
1710
            mxf_write_klv_fill(s);
1711
            mxf_write_partition(s, 1, 2, body_partition_key, 0);
1712

    
1713
            mxf_write_klv_fill(s);
1714
            mxf_write_index_table_segment(s);
1715
        }
1716

    
1717
        mxf_write_klv_fill(s);
1718
        mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1719
        mxf->index_entries[mxf->edit_units_count].flags = flags;
1720
        if (!mxf->first_edit_unit_offset)
1721
            mxf->first_edit_unit_offset = mxf->index_entries[0].offset;
1722
        mxf_write_system_item(s);
1723

    
1724
        mxf->edit_units_count++;
1725
    } else if (st->index == 1) {
1726
        uint64_t pos = url_ftell(pb);
1727
        mxf->index_entries[mxf->edit_units_count-1].slice_offset = pos +
1728
            klv_fill_size(pos) - mxf->index_entries[mxf->edit_units_count-1].offset;
1729
    }
1730

    
1731
    mxf_write_klv_fill(s);
1732
    put_buffer(pb, sc->track_essence_element_key, 16); // write key
1733
    klv_encode_ber4_length(pb, pkt->size); // write length
1734
    put_buffer(pb, pkt->data, pkt->size); // write value
1735

    
1736
    put_flush_packet(pb);
1737
    return 0;
1738
}
1739

    
1740
static void mxf_write_random_index_pack(AVFormatContext *s)
1741
{
1742
    MXFContext *mxf = s->priv_data;
1743
    ByteIOContext *pb = s->pb;
1744
    uint64_t pos = url_ftell(pb);
1745
    int i;
1746

    
1747
    put_buffer(pb, random_index_pack_key, 16);
1748
    klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1749

    
1750
    put_be32(pb, 0); // BodySID of header partition
1751
    put_be64(pb, 0); // offset of header partition
1752

    
1753
    for (i = 0; i < mxf->body_partitions_count; i++) {
1754
        put_be32(pb, 1); // BodySID
1755
        put_be64(pb, mxf->body_partition_offset[i]);
1756
    }
1757

    
1758
    put_be32(pb, 0); // BodySID of footer partition
1759
    put_be64(pb, mxf->footer_partition_offset);
1760

    
1761
    put_be32(pb, url_ftell(pb) - pos + 4);
1762
}
1763

    
1764
static int mxf_write_footer(AVFormatContext *s)
1765
{
1766
    MXFContext *mxf = s->priv_data;
1767
    ByteIOContext *pb = s->pb;
1768

    
1769
    mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1770

    
1771
    mxf_write_klv_fill(s);
1772
    mxf->footer_partition_offset = url_ftell(pb);
1773
    if (mxf->edit_unit_byte_count) { // no need to repeat index
1774
        mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1775
    } else {
1776
        mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1777

    
1778
        mxf_write_klv_fill(s);
1779
        mxf_write_index_table_segment(s);
1780
    }
1781

    
1782
    mxf_write_klv_fill(s);
1783
    mxf_write_random_index_pack(s);
1784

    
1785
    if (!url_is_streamed(s->pb)) {
1786
        int index;
1787
        url_fseek(pb, 0, SEEK_SET);
1788
        if (s->oformat == &mxf_d10_muxer) {
1789
            mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1790
            index = 1;
1791
        } else if (mxf->edit_unit_byte_count) {
1792
            mxf_write_partition(s, 0, 2, header_closed_partition_key, 1);
1793
            index = 1;
1794
        } else {
1795
            mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1796
            index = 0;
1797
        }
1798
        if (index) {
1799
            mxf_write_klv_fill(s);
1800
            mxf_write_index_table_segment(s);
1801
        }
1802
    }
1803

    
1804
    ff_audio_interleave_close(s);
1805

    
1806
    av_freep(&mxf->index_entries);
1807
    av_freep(&mxf->body_partition_offset);
1808
    av_freep(&mxf->timecode_track->priv_data);
1809
    av_freep(&mxf->timecode_track);
1810

    
1811
    mxf_free(s);
1812

    
1813
    return 0;
1814
}
1815

    
1816
static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1817
{
1818
    AVPacketList *pktl;
1819
    int stream_count = 0;
1820
    int streams[MAX_STREAMS];
1821

    
1822
    memset(streams, 0, sizeof(streams));
1823
    pktl = s->packet_buffer;
1824
    while (pktl) {
1825
        //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1826
        if (!streams[pktl->pkt.stream_index])
1827
            stream_count++;
1828
        streams[pktl->pkt.stream_index]++;
1829
        pktl = pktl->next;
1830
    }
1831

    
1832
    if (stream_count && (s->nb_streams == stream_count || flush)) {
1833
        pktl = s->packet_buffer;
1834
        if (s->nb_streams != stream_count) {
1835
            AVPacketList *first = NULL;
1836
            AVPacketList *last = NULL;
1837
            // find first packet in edit unit
1838
            while (pktl) {
1839
                AVStream *st = s->streams[pktl->pkt.stream_index];
1840
                if (st->index == 0)
1841
                    break;
1842
                else if (!first)
1843
                    first = pktl;
1844
                last = pktl;
1845
                pktl = pktl->next;
1846
            }
1847
            if (last)
1848
                last->next = NULL;
1849
            // purge packet queue
1850
            while (pktl) {
1851
                AVPacketList *next = pktl->next;
1852
                av_free_packet(&pktl->pkt);
1853
                av_freep(&pktl);
1854
                pktl = next;
1855
            }
1856
            if (!first)
1857
                goto out;
1858
            pktl = first;
1859
        }
1860

    
1861
        *out = pktl->pkt;
1862
        //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1863
        s->packet_buffer = pktl->next;
1864
        av_freep(&pktl);
1865
        return 1;
1866
    } else {
1867
    out:
1868
        av_init_packet(out);
1869
        return 0;
1870
    }
1871
}
1872

    
1873
static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1874
{
1875
    MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1876
    MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1877

    
1878
    return next->dts > pkt->dts ||
1879
        (next->dts == pkt->dts && sc->order < sc2->order);
1880
}
1881

    
1882
static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1883
{
1884
    return ff_audio_rechunk_interleave(s, out, pkt, flush,
1885
                               mxf_interleave_get_packet, mxf_compare_timestamps);
1886
}
1887

    
1888
AVOutputFormat mxf_muxer = {
1889
    "mxf",
1890
    NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1891
    "application/mxf",
1892
    "mxf",
1893
    sizeof(MXFContext),
1894
    CODEC_ID_PCM_S16LE,
1895
    CODEC_ID_MPEG2VIDEO,
1896
    mxf_write_header,
1897
    mxf_write_packet,
1898
    mxf_write_footer,
1899
    AVFMT_NOTIMESTAMPS,
1900
    NULL,
1901
    mxf_interleave,
1902
};
1903

    
1904
AVOutputFormat mxf_d10_muxer = {
1905
    "mxf_d10",
1906
    NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1907
    "application/mxf",
1908
    NULL,
1909
    sizeof(MXFContext),
1910
    CODEC_ID_PCM_S16LE,
1911
    CODEC_ID_MPEG2VIDEO,
1912
    mxf_write_header,
1913
    mxf_write_d10_packet,
1914
    mxf_write_footer,
1915
    AVFMT_NOTIMESTAMPS,
1916
    NULL,
1917
    mxf_interleave,
1918
};