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ffmpeg / libavformat / mxfenc.c @ eacc40e8

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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 "libavutil/fifo.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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#define MXF_INDEX_CLUSTER_SIZE 4096
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typedef struct {
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    AVFifoBuffer fifo;
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    unsigned fifo_size;           ///< current fifo size allocated
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    uint64_t dts;                 ///< current dts
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    int sample_size;              ///< size of one sample all channels included
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    const int *samples_per_frame; ///< must be 0 terminated
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    const int *samples;           ///< current samples per frame, pointer to samples_per_frame
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    AVRational time_base;         ///< time base of output audio packets
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} AudioInterleaveContext;
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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[17]; // one video, 16 audio
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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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    int64_t duration;
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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 const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
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      mxf_write_mpegvideo_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_aes3_desc },
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    { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
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      { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
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      mxf_write_wav_desc },
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    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
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      { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
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      { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
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      NULL },
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};
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typedef struct MXFContext {
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    int64_t footer_partition_offset;
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    int essence_container_count;
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    uint8_t essence_containers_indices[FF_ARRAY_ELEMS(mxf_essence_container_uls)];
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    AVRational time_base;
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    int header_written;
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    MXFIndexEntry *index_entries;
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    unsigned edit_units_count;
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    int edit_unit_start;  ///< index of the stream starting edit unit
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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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/**
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 * complete key for operation pattern, partitions, and primer pack
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 */
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static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
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static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
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static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
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static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
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static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
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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
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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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/**
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 * partial key for header metadata
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 */
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static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
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static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
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/**
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 * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
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 */
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static const MXFLocalTagPair mxf_local_tag_batch[] = {
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    // preface set
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    { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
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    { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
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    { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
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    { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
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    { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
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    { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
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    { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
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    { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
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    // Identification
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    { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
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    { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
164
    { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
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    { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
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    { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
167
    { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
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    // Content Storage
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    { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
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    { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
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    // Essence Container Data
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    { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
173
    { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
174
    // Package
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    { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
176
    { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
177
    { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
178
    { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
179
    { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
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    // Track
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    { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
182
    { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
183
    { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
184
    { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
185
    { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
186
    // Sequence
187
    { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
188
    { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
189
    { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
190
    // Source Clip
191
    { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
192
    { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
193
    { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
194
    // File Descriptor
195
    { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
196
    { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
197
    { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
198
    { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
199
    // Generic Picture Essence Descriptor
200
    { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
201
    { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
202
    { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
203
    { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
204
    { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
205
    { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
206
    { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
207
    { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
208
    // Generic Sound Essence Descriptor
209
    { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
210
    { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
211
    { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
212
    { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
213
    { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
214
    // Index Table Segment
215
    { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
216
    { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
217
    { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
218
    { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
219
    { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
220
    { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
221
    { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
222
    { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
223
    // MPEG video Descriptor
224
    { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
225
    // Wave Audio Essence Descriptor
226
    { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
227
    { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
228
};
229

    
230
static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
231
{
232
    put_buffer(pb, uuid_base, 12);
233
    put_be16(pb, type);
234
    put_be16(pb, value);
235
}
236

    
237
static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
238
{
239
    put_buffer(pb, umid_base, 16);
240
    mxf_write_uuid(pb, type, value);
241
}
242

    
243
static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
244
{
245
    put_be32(pb, ref_count);
246
    put_be32(pb, 16);
247
}
248

    
249
static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
250
{
251
    // Determine the best BER size
252
    int size;
253
    if (len < 128) {
254
        //short form
255
        put_byte(pb, len);
256
        return 1;
257
    }
258

    
259
    size = (av_log2(len) >> 3) + 1;
260

    
261
    // long form
262
    put_byte(pb, 0x80 + size);
263
    while(size) {
264
        size--;
265
        put_byte(pb, len >> 8 * size & 0xff);
266
    }
267
    return 0;
268
}
269

    
270
/*
271
 * Get essence container ul index
272
 */
273
static int mxf_get_essence_container_ul_index(enum CodecID id)
274
{
275
    int i;
276
    for (i = 0; mxf_essence_mappings[i].id; i++)
277
        if (mxf_essence_mappings[i].id == id)
278
            return mxf_essence_mappings[i].index;
279
    return -1;
280
}
281

    
282
static void mxf_write_primer_pack(AVFormatContext *s)
283
{
284
    ByteIOContext *pb = s->pb;
285
    int local_tag_number, i = 0;
286

    
287
    local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
288

    
289
    put_buffer(pb, primer_pack_key, 16);
290
    klv_encode_ber_length(pb, local_tag_number * 18 + 8);
291

    
292
    put_be32(pb, local_tag_number); // local_tag num
293
    put_be32(pb, 18); // item size, always 18 according to the specs
294

    
295
    for (i = 0; i < local_tag_number; i++) {
296
        put_be16(pb, mxf_local_tag_batch[i].local_tag);
297
        put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
298
    }
299
}
300

    
301
static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
302
{
303
    put_be16(pb, tag);
304
    put_be16(pb, size);
305
}
306

    
307
static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
308
{
309
    put_buffer(pb, header_metadata_key, 13);
310
    put_be24(pb, value);
311
}
312

    
313
static void mxf_free(AVFormatContext *s)
314
{
315
    int i;
316

    
317
    for (i = 0; i < s->nb_streams; i++) {
318
        AVStream *st = s->streams[i];
319
        av_freep(&st->priv_data);
320
    }
321
}
322

    
323
static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
324
{
325
    const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
326
    while (uls->type != CODEC_TYPE_DATA) {
327
        if (type == uls->type)
328
            break;
329
        uls++;
330
    }
331
    return uls;
332
}
333

    
334
static void mxf_write_essence_container_refs(AVFormatContext *s)
335
{
336
    MXFContext *c = s->priv_data;
337
    ByteIOContext *pb = s->pb;
338
    int i;
339

    
340
    mxf_write_refs_count(pb, c->essence_container_count);
341
    av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
342
    for (i = 0; i < c->essence_container_count; i++) {
343
        put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
344
        PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
345
    }
346
}
347

    
348
static void mxf_write_preface(AVFormatContext *s)
349
{
350
    MXFContext *mxf = s->priv_data;
351
    ByteIOContext *pb = s->pb;
352

    
353
    mxf_write_metadata_key(pb, 0x012f00);
354
    PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
355
    klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
356

    
357
    // write preface set uid
358
    mxf_write_local_tag(pb, 16, 0x3C0A);
359
    mxf_write_uuid(pb, Preface, 0);
360
    PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
361

    
362
    // write creation date
363
    mxf_write_local_tag(pb, 8, 0x3B02);
364
    put_be64(pb, s->timestamp);
365

    
366
    // write version
367
    mxf_write_local_tag(pb, 2, 0x3B05);
368
    put_be16(pb, 1);
369

    
370
    // write identification_refs
371
    mxf_write_local_tag(pb, 16 + 8, 0x3B06);
372
    mxf_write_refs_count(pb, 1);
373
    mxf_write_uuid(pb, Identification, 0);
374

    
375
    // write content_storage_refs
376
    mxf_write_local_tag(pb, 16, 0x3B03);
377
    mxf_write_uuid(pb, ContentStorage, 0);
378

    
379
    mxf_write_local_tag(pb, 16, 0x3B09);
380
    put_buffer(pb, op1a_ul, 16);
381

    
382
    // write essence_container_refs
383
    mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
384
    mxf_write_essence_container_refs(s);
385

    
386
    // write dm_scheme_refs
387
    mxf_write_local_tag(pb, 8, 0x3B0B);
388
    put_be64(pb, 0);
389
}
390

    
391
/*
392
 * Write a local tag containing an ascii string as utf-16
393
 */
394
static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
395
{
396
    int i, size = strlen(value);
397
    mxf_write_local_tag(pb, size*2, tag);
398
    for (i = 0; i < size; i++)
399
        put_be16(pb, value[i]);
400
}
401

    
402
static void mxf_write_identification(AVFormatContext *s)
403
{
404
    ByteIOContext *pb = s->pb;
405
    const char *company = "FFmpeg";
406
    const char *product = "OP1a Muxer";
407
    const char *version;
408
    int length;
409

    
410
    mxf_write_metadata_key(pb, 0x013000);
411
    PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
412

    
413
    version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
414
        "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
415
    length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
416
    klv_encode_ber_length(pb, length);
417

    
418
    // write uid
419
    mxf_write_local_tag(pb, 16, 0x3C0A);
420
    mxf_write_uuid(pb, Identification, 0);
421
    PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
422

    
423
    // write generation uid
424
    mxf_write_local_tag(pb, 16, 0x3C09);
425
    mxf_write_uuid(pb, Identification, 1);
426

    
427
    mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
428
    mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
429
    mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
430

    
431
    // write product uid
432
    mxf_write_local_tag(pb, 16, 0x3C05);
433
    mxf_write_uuid(pb, Identification, 2);
434

    
435
    // write modified date
436
    mxf_write_local_tag(pb, 8, 0x3C06);
437
    put_be64(pb, 0);
438
}
439

    
440
static void mxf_write_content_storage(AVFormatContext *s)
441
{
442
    ByteIOContext *pb = s->pb;
443

    
444
    mxf_write_metadata_key(pb, 0x011800);
445
    PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
446
    klv_encode_ber_length(pb, 92);
447

    
448
    // write uid
449
    mxf_write_local_tag(pb, 16, 0x3C0A);
450
    mxf_write_uuid(pb, ContentStorage, 0);
451
    PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
452

    
453
    // write package reference
454
    mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
455
    mxf_write_refs_count(pb, 2);
456
    mxf_write_uuid(pb, MaterialPackage, 0);
457
    mxf_write_uuid(pb, SourcePackage, 0);
458

    
459
    // write essence container data
460
    mxf_write_local_tag(pb, 8 + 16, 0x1902);
461
    mxf_write_refs_count(pb, 1);
462
    mxf_write_uuid(pb, EssenceContainerData, 0);
463
}
464

    
465
static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
466
{
467
    MXFContext *mxf = s->priv_data;
468
    ByteIOContext *pb = s->pb;
469
    MXFStreamContext *sc = st->priv_data;
470

    
471
    mxf_write_metadata_key(pb, 0x013b00);
472
    PRINT_KEY(s, "track key", pb->buf_ptr - 16);
473
    klv_encode_ber_length(pb, 80);
474

    
475
    // write track uid
476
    mxf_write_local_tag(pb, 16, 0x3C0A);
477
    mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
478
    PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
479

    
480
    // write track id
481
    mxf_write_local_tag(pb, 4, 0x4801);
482
    put_be32(pb, st->index);
483

    
484
    // write track number
485
    mxf_write_local_tag(pb, 4, 0x4804);
486
    if (type == MaterialPackage)
487
        put_be32(pb, 0); // track number of material package is 0
488
    else
489
        put_buffer(pb, sc->track_essence_element_key + 12, 4);
490

    
491
    mxf_write_local_tag(pb, 8, 0x4B01);
492
    put_be32(pb, mxf->time_base.den);
493
    put_be32(pb, mxf->time_base.num);
494

    
495
    // write origin
496
    mxf_write_local_tag(pb, 8, 0x4B02);
497
    put_be64(pb, 0);
498

    
499
    // write sequence refs
500
    mxf_write_local_tag(pb, 16, 0x4803);
501
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
502
}
503

    
504
static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
505
{
506
    const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
507
    MXFStreamContext *sc = st->priv_data;
508

    
509
    // find data define uls
510
    mxf_write_local_tag(pb, 16, 0x0201);
511
    put_buffer(pb, data_def_ul->uid, 16);
512

    
513
    // write duration
514
    mxf_write_local_tag(pb, 8, 0x0202);
515
    put_be64(pb, sc->duration);
516
}
517

    
518
static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
519
{
520
    ByteIOContext *pb = s->pb;
521

    
522
    mxf_write_metadata_key(pb, 0x010f00);
523
    PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
524
    klv_encode_ber_length(pb, 80);
525

    
526
    mxf_write_local_tag(pb, 16, 0x3C0A);
527
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
528

    
529
    PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
530
    mxf_write_common_fields(pb, st);
531

    
532
    // write structural component
533
    mxf_write_local_tag(pb, 16 + 8, 0x1001);
534
    mxf_write_refs_count(pb, 1);
535
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
536
}
537

    
538
static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
539
{
540
    ByteIOContext *pb = s->pb;
541
    int i;
542

    
543
    mxf_write_metadata_key(pb, 0x011100);
544
    PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
545
    klv_encode_ber_length(pb, 108);
546

    
547
    // write uid
548
    mxf_write_local_tag(pb, 16, 0x3C0A);
549
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
550

    
551
    PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
552
    mxf_write_common_fields(pb, st);
553

    
554
    // write start_position
555
    mxf_write_local_tag(pb, 8, 0x1201);
556
    put_be64(pb, 0);
557

    
558
    // write source package uid, end of the reference
559
    mxf_write_local_tag(pb, 32, 0x1101);
560
    if (type == SourcePackage) {
561
        for (i = 0; i < 4; i++)
562
            put_be64(pb, 0);
563
    } else
564
        mxf_write_umid(pb, SourcePackage, 0);
565

    
566
    // write source track id
567
    mxf_write_local_tag(pb, 4, 0x1102);
568
    if (type == SourcePackage)
569
        put_be32(pb, 0);
570
    else
571
        put_be32(pb, st->index);
572
}
573

    
574
static void mxf_write_multi_descriptor(AVFormatContext *s)
575
{
576
    MXFContext *mxf = s->priv_data;
577
    ByteIOContext *pb = s->pb;
578
    int i;
579

    
580
    mxf_write_metadata_key(pb, 0x014400);
581
    PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
582
    klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
583

    
584
    mxf_write_local_tag(pb, 16, 0x3C0A);
585
    mxf_write_uuid(pb, MultipleDescriptor, 0);
586
    PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
587

    
588
    // write sample rate
589
    mxf_write_local_tag(pb, 8, 0x3001);
590
    put_be32(pb, mxf->time_base.den);
591
    put_be32(pb, mxf->time_base.num);
592

    
593
    // write essence container ul
594
    mxf_write_local_tag(pb, 16, 0x3004);
595
    put_buffer(pb, multiple_desc_ul, 16);
596

    
597
    // write sub descriptor refs
598
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
599
    mxf_write_refs_count(pb, s->nb_streams);
600
    for (i = 0; i < s->nb_streams; i++)
601
        mxf_write_uuid(pb, SubDescriptor, i);
602
}
603

    
604
static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
605
{
606
    MXFContext *mxf = s->priv_data;
607
    MXFStreamContext *sc = st->priv_data;
608
    ByteIOContext *pb = s->pb;
609

    
610
    put_buffer(pb, key, 16);
611
    klv_encode_ber_length(pb, size);
612

    
613
    mxf_write_local_tag(pb, 16, 0x3C0A);
614
    mxf_write_uuid(pb, SubDescriptor, st->index);
615

    
616
    mxf_write_local_tag(pb, 4, 0x3006);
617
    put_be32(pb, st->index);
618

    
619
    mxf_write_local_tag(pb, 8, 0x3001);
620
    put_be32(pb, mxf->time_base.den);
621
    put_be32(pb, mxf->time_base.num);
622

    
623
    mxf_write_local_tag(pb, 16, 0x3004);
624
    put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
625
}
626

    
627
static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
628
static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
629
static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
630

    
631
static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
632
{
633
    MXFStreamContext *sc = st->priv_data;
634
    ByteIOContext *pb = s->pb;
635
    int stored_height = (st->codec->height+15)/16*16;
636
    AVRational dar;
637
    int f1, f2;
638

    
639
    mxf_write_generic_desc(s, st, mxf_mpegvideo_descriptor_key, 153+sc->interlaced*4);
640

    
641
    mxf_write_local_tag(pb, 4, 0x3203);
642
    put_be32(pb, st->codec->width);
643

    
644
    mxf_write_local_tag(pb, 4, 0x3202);
645
    put_be32(pb, stored_height>>sc->interlaced);
646

    
647
    mxf_write_local_tag(pb, 4, 0x3209);
648
    put_be32(pb, st->codec->width);
649

    
650
    mxf_write_local_tag(pb, 4, 0x3208);
651
    put_be32(pb, st->codec->height>>sc->interlaced);
652

    
653
    // bit rate
654
    mxf_write_local_tag(pb, 4, 0x8000);
655
    put_be32(pb, st->codec->bit_rate);
656

    
657
    // frame layout
658
    mxf_write_local_tag(pb, 1, 0x320C);
659
    put_byte(pb, sc->interlaced);
660

    
661
    // video line map
662
    switch (st->codec->height) {
663
    case  576: f1 = 23; f2 = 336; break;
664
    case  608: f1 =  7; f2 = 320; break;
665
    case  480: f1 = 20; f2 = 283; break;
666
    case  512: f1 =  7; f2 = 270; break;
667
    case  720: f1 = 26; f2 =   0; break; // progressive
668
    case 1080: f1 = 21; f2 = 584; break;
669
    default:   f1 =  0; f2 =   0; break;
670
    }
671

    
672
    if (!sc->interlaced) {
673
        f2  = 0;
674
        f1 *= 2;
675
    }
676

    
677
    mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
678
    put_be32(pb, sc->interlaced ? 2 : 1);
679
    put_be32(pb, 4);
680
    put_be32(pb, f1);
681
    if (sc->interlaced)
682
        put_be32(pb, f2);
683

    
684
    av_reduce(&dar.num, &dar.den,
685
              st->codec->width*st->codec->sample_aspect_ratio.num,
686
              st->codec->height*st->codec->sample_aspect_ratio.den,
687
              1024*1024);
688

    
689
    mxf_write_local_tag(pb, 8, 0x320E);
690
    put_be32(pb, dar.num);
691
    put_be32(pb, dar.den);
692

    
693
    mxf_write_local_tag(pb, 16, 0x3201);
694
    put_buffer(pb, *sc->codec_ul, 16);
695
}
696

    
697
static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
698
{
699
    ByteIOContext *pb = s->pb;
700

    
701
    mxf_write_generic_desc(s, st, key, size);
702

    
703
    // audio locked
704
    mxf_write_local_tag(pb, 1, 0x3D02);
705
    put_byte(pb, 1);
706

    
707
    // write audio sampling rate
708
    mxf_write_local_tag(pb, 8, 0x3D03);
709
    put_be32(pb, st->codec->sample_rate);
710
    put_be32(pb, 1);
711

    
712
    mxf_write_local_tag(pb, 4, 0x3D07);
713
    put_be32(pb, st->codec->channels);
714

    
715
    mxf_write_local_tag(pb, 4, 0x3D01);
716
    put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
717
}
718

    
719
static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
720
{
721
    ByteIOContext *pb = s->pb;
722

    
723
    mxf_write_generic_sound_desc(s, st, key, size);
724

    
725
    mxf_write_local_tag(pb, 2, 0x3D0A);
726
    put_be16(pb, st->codec->block_align);
727

    
728
    // avg bytes per sec
729
    mxf_write_local_tag(pb, 4, 0x3D09);
730
    put_be32(pb, st->codec->block_align*st->codec->sample_rate);
731
}
732

    
733
static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
734
{
735
    mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
736
}
737

    
738
static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
739
{
740
    mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
741
}
742

    
743
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
744
{
745
    ByteIOContext *pb = s->pb;
746
    int i;
747

    
748
    if (type == MaterialPackage) {
749
        mxf_write_metadata_key(pb, 0x013600);
750
        PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
751
        klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
752
    } else {
753
        mxf_write_metadata_key(pb, 0x013700);
754
        PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
755
        klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
756
    }
757

    
758
    // write uid
759
    mxf_write_local_tag(pb, 16, 0x3C0A);
760
    mxf_write_uuid(pb, type, 0);
761
    av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
762
    PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
763

    
764
    // write package umid
765
    mxf_write_local_tag(pb, 32, 0x4401);
766
    mxf_write_umid(pb, type, 0);
767
    PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
768

    
769
    // write create date
770
    mxf_write_local_tag(pb, 8, 0x4405);
771
    put_be64(pb, 0);
772

    
773
    // write modified date
774
    mxf_write_local_tag(pb, 8, 0x4404);
775
    put_be64(pb, 0);
776

    
777
    // write track refs
778
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
779
    mxf_write_refs_count(pb, s->nb_streams);
780
    for (i = 0; i < s->nb_streams; i++)
781
        mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
782

    
783
    // write multiple descriptor reference
784
    if (type == SourcePackage) {
785
        mxf_write_local_tag(pb, 16, 0x4701);
786
        if (s->nb_streams > 1) {
787
            mxf_write_uuid(pb, MultipleDescriptor, 0);
788
            mxf_write_multi_descriptor(s);
789
        } else
790
            mxf_write_uuid(pb, SubDescriptor, 0);
791
    }
792

    
793
    for (i = 0; i < s->nb_streams; i++) {
794
        AVStream *st = s->streams[i];
795
        mxf_write_track(s, st, type);
796
        mxf_write_sequence(s, st, type);
797
        mxf_write_structural_component(s, st, type);
798

    
799
        if (type == SourcePackage) {
800
            MXFStreamContext *sc = st->priv_data;
801
            mxf_essence_container_uls[sc->index].write_desc(s, st);
802
        }
803
    }
804
}
805

    
806
static int mxf_write_essence_container_data(AVFormatContext *s)
807
{
808
    ByteIOContext *pb = s->pb;
809

    
810
    mxf_write_metadata_key(pb, 0x012300);
811
    klv_encode_ber_length(pb, 72);
812

    
813
    mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
814
    mxf_write_uuid(pb, EssenceContainerData, 0);
815

    
816
    mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
817
    mxf_write_umid(pb, SourcePackage, 0);
818

    
819
    mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
820
    put_be32(pb, 1);
821

    
822
    mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
823
    put_be32(pb, 2);
824

    
825
    return 0;
826
}
827

    
828
static int mxf_write_header_metadata_sets(AVFormatContext *s)
829
{
830
    mxf_write_preface(s);
831
    mxf_write_identification(s);
832
    mxf_write_content_storage(s);
833
    mxf_write_package(s, MaterialPackage);
834
    mxf_write_package(s, SourcePackage);
835
    mxf_write_essence_container_data(s);
836
    return 0;
837
}
838

    
839
static int mxf_write_index_table_segment(AVFormatContext *s)
840
{
841
    MXFContext *mxf = s->priv_data;
842
    ByteIOContext *pb = s->pb;
843
    int i, j, k, ret;
844
    int temporal_reordering = 0;
845
    int last_key_index = 0, key_index = 0;
846

    
847
    av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
848

    
849
    put_buffer(pb, index_table_segment_key, 16);
850
    ret = klv_encode_ber_length(pb, 109 + s->nb_streams*6 +
851
                                mxf->edit_units_count*(11+(s->nb_streams-1)*4));
852

    
853
    // instance id
854
    mxf_write_local_tag(pb, 16, 0x3C0A);
855
    mxf_write_uuid(pb, IndexTableSegment, 0);
856

    
857
    // index edit rate
858
    mxf_write_local_tag(pb, 8, 0x3F0B);
859
    put_be32(pb, mxf->time_base.num);
860
    put_be32(pb, mxf->time_base.den);
861

    
862
    // index start position
863
    mxf_write_local_tag(pb, 8, 0x3F0C);
864
    put_be64(pb, 0);
865

    
866
    // index duration
867
    mxf_write_local_tag(pb, 8, 0x3F0D);
868
    put_be64(pb, mxf->edit_units_count);
869

    
870
    // edit unit byte count
871
    mxf_write_local_tag(pb, 4, 0x3F05);
872
    put_be32(pb, 0);
873

    
874
    // index sid
875
    mxf_write_local_tag(pb, 4, 0x3F06);
876
    put_be32(pb, 2);
877

    
878
    // body sid
879
    mxf_write_local_tag(pb, 4, 0x3F07);
880
    put_be32(pb, 1);
881

    
882
    // slice count - 1
883
    mxf_write_local_tag(pb, 1, 0x3F08);
884
    put_byte(pb, s->nb_streams-1);
885

    
886
    // delta entry array
887
    mxf_write_local_tag(pb, 8 + s->nb_streams*6, 0x3F09);
888
    put_be32(pb, s->nb_streams); // num of entries
889
    put_be32(pb, 6);             // size of one entry
890
    for (i = 0; i < s->nb_streams; i++) {
891
        AVStream *st = s->streams[i];
892
        MXFStreamContext *sc = st->priv_data;
893
        put_byte(pb, sc->temporal_reordering);
894
        if (sc->temporal_reordering)
895
            temporal_reordering = 1;
896
        put_byte(pb, i);
897
        put_be32(pb, 0); // element delta
898
    }
899

    
900
    mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+(s->nb_streams-1)*4), 0x3F0A);
901
    put_be32(pb, mxf->edit_units_count);  // num of entries
902
    put_be32(pb, 11+(s->nb_streams-1)*4); // size of one entry
903
    for (i = 0; i < mxf->edit_units_count; i++) {
904
        if (temporal_reordering) {
905
            int temporal_offset = 0;
906
            for (j = i+1; j < mxf->edit_units_count; j++) {
907
                temporal_offset++;
908
                if (mxf->index_entries[j].flags & 0x10) { // backward prediction
909
                    // next is not b, so is reordered
910
                    if (!(mxf->index_entries[i+1].flags & 0x10)) {
911
                        if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
912
                            temporal_offset = 0;
913
                        else
914
                            temporal_offset = -temporal_offset;
915
                    }
916
                    break;
917
                }
918
            }
919
            put_byte(pb, temporal_offset);
920
        } else
921
            put_byte(pb, 0);
922
        if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
923
            last_key_index = key_index;
924
            key_index = i;
925
        }
926
        if (mxf->index_entries[i].flags & 0x10 && // backward prediction
927
            !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
928
            put_byte(pb, last_key_index - i);
929
        } else {
930
            put_byte(pb, key_index - i); // key frame offset
931
            if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
932
                last_key_index = key_index;
933
        }
934
        put_byte(pb, mxf->index_entries[i].flags);
935
        // stream offset
936
        put_be64(pb, mxf->index_entries[i].offset - mxf->index_entries[0].offset);
937
        for (k = 0; k < s->nb_streams; k++) {
938
            if (mxf->index_entries[i].slice_offset[k])
939
                put_be32(pb, mxf->index_entries[i].slice_offset[k]);
940
        }
941
    }
942

    
943
    return ret;
944
}
945

    
946
static void mxf_write_partition(AVFormatContext *s, int bodysid,
947
                                int indexsid, unsigned index_byte_count,
948
                                const uint8_t *key, int write_metadata)
949
{
950
    MXFContext *mxf = s->priv_data;
951
    ByteIOContext *pb = s->pb;
952
    int64_t header_byte_count_offset;
953

    
954
    // write klv
955
    put_buffer(pb, key, 16);
956

    
957
    klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
958

    
959
    // write partition value
960
    put_be16(pb, 1); // majorVersion
961
    put_be16(pb, 2); // minorVersion
962
    put_be32(pb, 1); // kagSize
963

    
964
    put_be64(pb, url_ftell(pb) - 25); // thisPartition
965
    put_be64(pb, 0); // previousPartition
966

    
967
    put_be64(pb, mxf->footer_partition_offset); // footerPartition
968

    
969
    // set offset
970
    header_byte_count_offset = url_ftell(pb);
971
    put_be64(pb, 0); // headerByteCount, update later
972

    
973
    // indexTable
974
    put_be64(pb, index_byte_count); // indexByteCount
975
    put_be32(pb, indexsid); // indexSID
976
    put_be64(pb, 0); // bodyOffset
977

    
978
    put_be32(pb, bodysid); // bodySID
979
    put_buffer(pb, op1a_ul, 16); // operational pattern
980

    
981
    // essence container
982
    mxf_write_essence_container_refs(s);
983

    
984
    if (write_metadata) {
985
        // mark the start of the headermetadata and calculate metadata size
986
        int64_t pos, start = url_ftell(s->pb);
987
        mxf_write_primer_pack(s);
988
        mxf_write_header_metadata_sets(s);
989
        pos = url_ftell(s->pb);
990
        // update header_byte_count
991
        url_fseek(pb, header_byte_count_offset, SEEK_SET);
992
        put_be64(pb, pos - start);
993
        url_fseek(pb, pos, SEEK_SET);
994
    }
995

    
996
    put_flush_packet(pb);
997
}
998

    
999
static const UID mxf_mpeg2_codec_uls[] = {
1000
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1001
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1002
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1003
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1004
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1005
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1006
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1007
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1008
};
1009

    
1010
static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1011
{
1012
    if (avctx->profile == 4) { // Main
1013
        if (avctx->level == 8) // Main
1014
            return avctx->gop_size ?
1015
                &mxf_mpeg2_codec_uls[1] :
1016
                &mxf_mpeg2_codec_uls[0];
1017
        else if (avctx->level == 4) // High
1018
            return avctx->gop_size ?
1019
                &mxf_mpeg2_codec_uls[5] :
1020
                &mxf_mpeg2_codec_uls[4];
1021
    } else if (avctx->profile == 0) { // 422
1022
        if (avctx->level == 5) // Main
1023
            return avctx->gop_size ?
1024
                &mxf_mpeg2_codec_uls[3] :
1025
                &mxf_mpeg2_codec_uls[2];
1026
        else if (avctx->level == 2) // High
1027
            return avctx->gop_size ?
1028
                &mxf_mpeg2_codec_uls[7] :
1029
                &mxf_mpeg2_codec_uls[6];
1030
    }
1031
    return NULL;
1032
}
1033

    
1034
static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1035
{
1036
    MXFContext *mxf = s->priv_data;
1037
    MXFStreamContext *sc = st->priv_data;
1038
    uint32_t c = -1;
1039
    int i;
1040

    
1041
    mxf->index_entries[mxf->edit_units_count].flags = 0;
1042

    
1043
    for(i = 0; i < pkt->size - 4; i++) {
1044
        c = (c<<8) + pkt->data[i];
1045
        if (c == 0x1B5) {
1046
            if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1047
                st->codec->profile = pkt->data[i+1] & 0x07;
1048
                st->codec->level   = pkt->data[i+2] >> 4;
1049
            } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1050
                sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1051
                break;
1052
            }
1053
        } else if (c == 0x1b8) { // gop
1054
            if (i + 4 < pkt->size && pkt->data[i+4]>>6 & 0x01) // closed
1055
                mxf->index_entries[mxf->edit_units_count].flags |= 0x80; // random access
1056
        } else if (c == 0x1b3) { // seq
1057
            mxf->index_entries[mxf->edit_units_count].flags |= 0x40;
1058
        } else if (c == 0x100) { // pic
1059
            int pict_type = (pkt->data[i+2]>>3) & 0x07;
1060
            if (pict_type == 2) { // P frame
1061
                mxf->index_entries[mxf->edit_units_count].flags |= 0x22;
1062
                st->codec->gop_size = 1;
1063
            } else if (pict_type == 3) { // B frame
1064
                mxf->index_entries[mxf->edit_units_count].flags |= 0x33;
1065
                sc->temporal_reordering = -1;
1066
            } else if (!pict_type) {
1067
                av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1068
                return 0;
1069
            }
1070
        }
1071
    }
1072
    sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1073
    return !!sc->codec_ul;
1074
}
1075

    
1076
static int ff_audio_interleave_init(AVFormatContext *s,
1077
                                    const int *samples_per_frame,
1078
                                    AVRational time_base)
1079
{
1080
    int i;
1081

    
1082
    if (!samples_per_frame)
1083
        return -1;
1084

    
1085
    for (i = 0; i < s->nb_streams; i++) {
1086
        AVStream *st = s->streams[i];
1087
        AudioInterleaveContext *aic = st->priv_data;
1088

    
1089
        if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1090
            aic->sample_size = (st->codec->channels *
1091
                                av_get_bits_per_sample(st->codec->codec_id)) / 8;
1092
            if (!aic->sample_size) {
1093
                av_log(s, AV_LOG_ERROR, "could not compute sample size\n");
1094
                return -1;
1095
            }
1096
            aic->samples_per_frame = samples_per_frame;
1097
            aic->samples = aic->samples_per_frame;
1098
            aic->time_base = time_base;
1099

    
1100
            av_fifo_init(&aic->fifo, 100 * *aic->samples);
1101
        }
1102
    }
1103

    
1104
    return 0;
1105
}
1106

    
1107
static void ff_audio_interleave_close(AVFormatContext *s)
1108
{
1109
    int i;
1110
    for (i = 0; i < s->nb_streams; i++) {
1111
        AVStream *st = s->streams[i];
1112
        AudioInterleaveContext *aic = st->priv_data;
1113

    
1114
        if (st->codec->codec_type == CODEC_TYPE_AUDIO)
1115
            av_fifo_free(&aic->fifo);
1116
    }
1117
}
1118

    
1119
static int mxf_write_header(AVFormatContext *s)
1120
{
1121
    MXFContext *mxf = s->priv_data;
1122
    int i;
1123
    uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1124
    const int *samples_per_frame = NULL;
1125

    
1126
    if (s->nb_streams > 17) {
1127
        av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
1128
        return -1;
1129
    }
1130

    
1131
    for (i = 0; i < s->nb_streams; i++) {
1132
        AVStream *st = s->streams[i];
1133
        MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1134
        if (!sc)
1135
            return AVERROR(ENOMEM);
1136
        st->priv_data = sc;
1137

    
1138
        if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1139
            if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1140
                samples_per_frame = PAL_samples_per_frame;
1141
                mxf->time_base = (AVRational){ 1, 25 };
1142
            } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1143
                samples_per_frame = NTSC_samples_per_frame;
1144
                mxf->time_base = (AVRational){ 1001, 30000 };
1145
            } else {
1146
                av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1147
                return -1;
1148
            }
1149
            mxf->edit_unit_start = st->index;
1150
            av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1151
        } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1152
            if (st->codec->sample_rate != 48000) {
1153
                av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1154
                return -1;
1155
            }
1156
            av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1157
        }
1158
        sc->duration = -1;
1159

    
1160
        sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1161
        if (sc->index == -1) {
1162
            av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1163
                   "codec not currently supported in container\n", i);
1164
            return -1;
1165
        }
1166

    
1167
        sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1168

    
1169
        if (!present[sc->index]) {
1170
            mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
1171
            present[sc->index] = 1;
1172
        } else
1173
            present[sc->index]++;
1174
        memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1175
        sc->track_essence_element_key[15] = present[sc->index];
1176
        PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1177
    }
1178

    
1179
    for (i = 0; i < s->nb_streams; i++) {
1180
        MXFStreamContext *sc = s->streams[i]->priv_data;
1181
        // update element count
1182
        sc->track_essence_element_key[13] = present[sc->index];
1183
        sc->order = AV_RB32(sc->track_essence_element_key+12);
1184
    }
1185

    
1186
    if (!samples_per_frame)
1187
        samples_per_frame = PAL_samples_per_frame;
1188

    
1189
    if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1190
        return -1;
1191

    
1192
    return 0;
1193
}
1194

    
1195
static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1196
{
1197
    MXFContext *mxf = s->priv_data;
1198
    ByteIOContext *pb = s->pb;
1199
    AVStream *st = s->streams[pkt->stream_index];
1200
    MXFStreamContext *sc = st->priv_data;
1201

    
1202
    if (!(mxf->edit_units_count % MXF_INDEX_CLUSTER_SIZE)) {
1203
        mxf->index_entries = av_realloc(mxf->index_entries,
1204
            (mxf->edit_units_count + MXF_INDEX_CLUSTER_SIZE)*
1205
             sizeof(*mxf->index_entries));
1206
        if (!mxf->index_entries) {
1207
            av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1208
            return -1;
1209
        }
1210
    }
1211

    
1212
    if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1213
        if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
1214
            av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1215
            return -1;
1216
        }
1217
    }
1218

    
1219
    if (!mxf->header_written) {
1220
        mxf_write_partition(s, 1, 0, 0, header_open_partition_key, 1);
1221
        mxf->header_written = 1;
1222
    }
1223

    
1224
    if (st->index == mxf->edit_unit_start) {
1225
        mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1226
        mxf->index_entries[mxf->edit_units_count].slice_offset[st->index] = 0;
1227
        mxf->edit_units_count++;
1228
    } else {
1229
        mxf->index_entries[mxf->edit_units_count-1].slice_offset[st->index] =
1230
            url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
1231
    }
1232

    
1233
    put_buffer(pb, sc->track_essence_element_key, 16); // write key
1234
    klv_encode_ber_length(pb, pkt->size); // write length
1235
    put_buffer(pb, pkt->data, pkt->size); // write value
1236

    
1237
    sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
1238

    
1239
    put_flush_packet(pb);
1240
    return 0;
1241
}
1242

    
1243
static void mxf_write_random_index_pack(AVFormatContext *s)
1244
{
1245
    MXFContext *mxf = s->priv_data;
1246
    ByteIOContext *pb = s->pb;
1247
    uint64_t pos = url_ftell(pb);
1248

    
1249
    put_buffer(pb, random_index_pack_key, 16);
1250
    klv_encode_ber_length(pb, 28);
1251

    
1252
    put_be32(pb, 1); // BodySID of header partition
1253
    put_be64(pb, 0); // offset of header partition
1254

    
1255
    put_be32(pb, 0); // BodySID of footer partition
1256
    put_be64(pb, mxf->footer_partition_offset);
1257

    
1258
    put_be32(pb, url_ftell(pb) - pos + 4);
1259
}
1260

    
1261
static int mxf_write_footer(AVFormatContext *s)
1262
{
1263
    MXFContext *mxf = s->priv_data;
1264
    ByteIOContext *pb = s->pb;
1265
    unsigned index_byte_count =
1266
        109 + s->nb_streams*6 +
1267
        mxf->edit_units_count*(11+(s->nb_streams-1)*4);
1268

    
1269
    // add encoded ber length
1270
    index_byte_count += 16 +
1271
        (index_byte_count < 128 ? 1 : (av_log2(index_byte_count) >> 3) + 2);
1272

    
1273
    mxf->footer_partition_offset = url_ftell(pb);
1274
    mxf_write_partition(s, 0, 2, index_byte_count, footer_partition_key, 0);
1275

    
1276
    mxf_write_index_table_segment(s);
1277

    
1278
    mxf_write_random_index_pack(s);
1279

    
1280
    if (!url_is_streamed(s->pb)) {
1281
        url_fseek(pb, 0, SEEK_SET);
1282
        mxf_write_partition(s, 1, 0, 0, header_closed_partition_key, 1);
1283
    }
1284

    
1285
    ff_audio_interleave_close(s);
1286

    
1287
    mxf_free(s);
1288
    return 0;
1289
}
1290

    
1291
static int mxf_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
1292
                                           int stream_index, int flush)
1293
{
1294
    AVStream *st = s->streams[stream_index];
1295
    AudioInterleaveContext *aic = st->priv_data;
1296

    
1297
    int size = FFMIN(av_fifo_size(&aic->fifo), *aic->samples * aic->sample_size);
1298
    if (!size || (!flush && size == av_fifo_size(&aic->fifo)))
1299
        return 0;
1300

    
1301
    av_new_packet(pkt, size);
1302
    av_fifo_read(&aic->fifo, pkt->data, size);
1303

    
1304
    pkt->dts = pkt->pts = aic->dts;
1305
    pkt->duration = av_rescale_q(*aic->samples, st->time_base, aic->time_base);
1306
    pkt->stream_index = stream_index;
1307
    aic->dts += pkt->duration;
1308

    
1309
    aic->samples++;
1310
    if (!*aic->samples)
1311
        aic->samples = aic->samples_per_frame;
1312

    
1313
    return size;
1314
}
1315

    
1316
static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1317
{
1318
    AVPacketList *pktl;
1319
    int stream_count = 0;
1320
    int streams[MAX_STREAMS];
1321

    
1322
    memset(streams, 0, sizeof(streams));
1323
    pktl = s->packet_buffer;
1324
    while (pktl) {
1325
        //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1326
        if (!streams[pktl->pkt.stream_index])
1327
            stream_count++;
1328
        streams[pktl->pkt.stream_index]++;
1329
        pktl = pktl->next;
1330
    }
1331

    
1332
    if (stream_count && (s->nb_streams == stream_count || flush)) {
1333
        pktl = s->packet_buffer;
1334
        if (s->nb_streams != stream_count) {
1335
            MXFContext *mxf = s->priv_data;
1336
            AVPacketList *first = NULL;
1337
            // find first packet in edit unit
1338
            while (pktl) {
1339
                AVStream *st = s->streams[pktl->pkt.stream_index];
1340
                if (st->index == mxf->edit_unit_start)
1341
                    break;
1342
                else if (!first)
1343
                    first = pktl;
1344
                pktl = pktl->next;
1345
            }
1346
            // purge packet queue
1347
            while (pktl) {
1348
                AVPacketList *next = pktl->next;
1349
                av_free_packet(&pktl->pkt);
1350
                av_freep(&pktl);
1351
                pktl = next;
1352
            }
1353
            if (!first)
1354
                goto out;
1355
            pktl = first;
1356
        }
1357

    
1358
        *out = pktl->pkt;
1359
        //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1360
        s->packet_buffer = pktl->next;
1361
        av_freep(&pktl);
1362
        return 1;
1363
    } else {
1364
    out:
1365
        av_init_packet(out);
1366
        return 0;
1367
    }
1368
}
1369

    
1370
static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1371
{
1372
    MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1373
    MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1374

    
1375
    return next->dts > pkt->dts ||
1376
        (next->dts == pkt->dts && sc->order < sc2->order);
1377
}
1378

    
1379
static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1380
{
1381
    int i;
1382

    
1383
    if (pkt) {
1384
        AVStream *st = s->streams[pkt->stream_index];
1385
        AudioInterleaveContext *aic = st->priv_data;
1386
        if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1387
            av_fifo_generic_write(&aic->fifo, pkt->data, pkt->size, NULL);
1388
        } else {
1389
            // rewrite pts and dts to be decoded time line position
1390
            pkt->pts = pkt->dts = aic->dts;
1391
            aic->dts += pkt->duration;
1392
            ff_interleave_add_packet(s, pkt, mxf_compare_timestamps);
1393
        }
1394
        pkt = NULL;
1395
    }
1396

    
1397
    for (i = 0; i < s->nb_streams; i++) {
1398
        AVStream *st = s->streams[i];
1399
        if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1400
            AVPacket new_pkt;
1401
            while (mxf_interleave_new_audio_packet(s, &new_pkt, i, flush))
1402
                ff_interleave_add_packet(s, &new_pkt, mxf_compare_timestamps);
1403
        }
1404
    }
1405

    
1406
    return mxf_interleave_get_packet(s, out, pkt, flush);
1407
}
1408

    
1409
AVOutputFormat mxf_muxer = {
1410
    "mxf",
1411
    NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1412
    NULL,
1413
    "mxf",
1414
    sizeof(MXFContext),
1415
    CODEC_ID_PCM_S16LE,
1416
    CODEC_ID_MPEG2VIDEO,
1417
    mxf_write_header,
1418
    mxf_write_packet,
1419
    mxf_write_footer,
1420
    AVFMT_NOTIMESTAMPS,
1421
    NULL,
1422
    mxf_interleave,
1423
};