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ffmpeg / libavformat / mxfenc.c @ a4397fa9

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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 "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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} 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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    enum CodecID id;
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    void (*write_desc)();
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} MXFContainerEssenceEntry;
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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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      CODEC_ID_MPEG2VIDEO, 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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      CODEC_ID_PCM_S16LE, 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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      CODEC_ID_PCM_S16LE, 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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      CODEC_ID_NONE, 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 */
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    { 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 */
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    { 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 */
164
    { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
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    // Package
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    { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
167
    { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
168
    { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
169
    { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
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    { 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 */
173
    { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
174
    { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
175
    { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
176
    { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
177
    // Sequence
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    { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
179
    { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
180
    { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
181
    // Source Clip
182
    { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
183
    { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
184
    { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
185
    // File Descriptor
186
    { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
187
    { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
188
    { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
189
    { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
190
    // Generic Picture Essence Descriptor
191
    { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
192
    { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
193
    { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
194
    { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
195
    { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
196
    { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
197
    { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
198
    { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
199
    // Generic Sound Essence Descriptor
200
    { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
201
    { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
202
    { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
203
    { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
204
    { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
205
    // Index Table Segment
206
    { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
207
    { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
208
    { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
209
    { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
210
    { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
211
    { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
212
    { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
213
    { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
214
    // MPEG video Descriptor
215
    { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
216
    // Wave Audio Essence Descriptor
217
    { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
218
    { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
219
};
220

    
221
static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
222
{
223
    put_buffer(pb, uuid_base, 12);
224
    put_be16(pb, type);
225
    put_be16(pb, value);
226
}
227

    
228
static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
229
{
230
    put_buffer(pb, umid_base, 16);
231
    mxf_write_uuid(pb, type, value);
232
}
233

    
234
static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
235
{
236
    put_be32(pb, ref_count);
237
    put_be32(pb, 16);
238
}
239

    
240
static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
241
{
242
    // Determine the best BER size
243
    int size;
244
    if (len < 128) {
245
        //short form
246
        put_byte(pb, len);
247
        return 1;
248
    }
249

    
250
    size = (av_log2(len) >> 3) + 1;
251

    
252
    // long form
253
    put_byte(pb, 0x80 + size);
254
    while(size) {
255
        size --;
256
        put_byte(pb, len >> 8 * size & 0xff);
257
    }
258
    return 0;
259
}
260

    
261
/*
262
 * Get essence container ul index
263
 */
264
static int mxf_get_essence_container_ul_index(enum CodecID id)
265
{
266
    int i;
267
    for (i = 0; i < FF_ARRAY_ELEMS(mxf_essence_container_uls); i++)
268
        if (mxf_essence_container_uls[i].id == id)
269
            return i;
270
    return -1;
271
}
272

    
273
static void mxf_write_primer_pack(AVFormatContext *s)
274
{
275
    ByteIOContext *pb = s->pb;
276
    int local_tag_number, i = 0;
277

    
278
    local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
279

    
280
    put_buffer(pb, primer_pack_key, 16);
281
    klv_encode_ber_length(pb, local_tag_number * 18 + 8);
282

    
283
    put_be32(pb, local_tag_number); // local_tag num
284
    put_be32(pb, 18); // item size, always 18 according to the specs
285

    
286
    for (i = 0; i < local_tag_number; i++) {
287
        put_be16(pb, mxf_local_tag_batch[i].local_tag);
288
        put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
289
    }
290
}
291

    
292
static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
293
{
294
    put_be16(pb, tag);
295
    put_be16(pb, size);
296
}
297

    
298
static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
299
{
300
    put_buffer(pb, header_metadata_key, 13);
301
    put_be24(pb, value);
302
}
303

    
304
static void mxf_free(AVFormatContext *s)
305
{
306
    int i;
307

    
308
    for (i = 0; i < s->nb_streams; i++) {
309
        AVStream *st = s->streams[i];
310
        av_freep(&st->priv_data);
311
    }
312
}
313

    
314
static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
315
{
316
    const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
317
    while (uls->type != CODEC_TYPE_DATA) {
318
        if (type == uls->type)
319
            break;
320
        uls++;
321
    }
322
    return uls;
323
}
324

    
325
static void mxf_write_essence_container_refs(AVFormatContext *s)
326
{
327
    MXFContext *c = s->priv_data;
328
    ByteIOContext *pb = s->pb;
329
    int i;
330

    
331
    mxf_write_refs_count(pb, c->essence_container_count);
332
    av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
333
    for (i = 0; i < c->essence_container_count; i++) {
334
        put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
335
        PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
336
    }
337
}
338

    
339
static void mxf_write_preface(AVFormatContext *s)
340
{
341
    MXFContext *mxf = s->priv_data;
342
    ByteIOContext *pb = s->pb;
343

    
344
    mxf_write_metadata_key(pb, 0x012f00);
345
    PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
346
    klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
347

    
348
    // write preface set uid
349
    mxf_write_local_tag(pb, 16, 0x3C0A);
350
    mxf_write_uuid(pb, Preface, 0);
351
    PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
352

    
353
    // write create date as unknown
354
    mxf_write_local_tag(pb, 8, 0x3B02);
355
    put_be64(pb, 0);
356

    
357
    // write version
358
    mxf_write_local_tag(pb, 2, 0x3B05);
359
    put_be16(pb, 1);
360

    
361
    // write identification_refs
362
    mxf_write_local_tag(pb, 16 + 8, 0x3B06);
363
    mxf_write_refs_count(pb, 1);
364
    mxf_write_uuid(pb, Identification, 0);
365

    
366
    // write content_storage_refs
367
    mxf_write_local_tag(pb, 16, 0x3B03);
368
    mxf_write_uuid(pb, ContentStorage, 0);
369

    
370
    mxf_write_local_tag(pb, 16, 0x3B09);
371
    put_buffer(pb, op1a_ul, 16);
372

    
373
    // write essence_container_refs
374
    mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
375
    mxf_write_essence_container_refs(s);
376

    
377
    // write dm_scheme_refs
378
    mxf_write_local_tag(pb, 8, 0x3B0B);
379
    put_be64(pb, 0);
380
}
381

    
382
/*
383
 * Write a local tag containing an ascii string as utf-16
384
 */
385
static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
386
{
387
    int i, size = strlen(value);
388
    mxf_write_local_tag(pb, size*2, tag);
389
    for (i = 0; i < size; i++)
390
        put_be16(pb, value[i]);
391
}
392

    
393
static void mxf_write_identification(AVFormatContext *s)
394
{
395
    ByteIOContext *pb = s->pb;
396
    const char *company = "FFmpeg";
397
    const char *product = "OP1a Muxer";
398
    const char *version;
399
    int length;
400

    
401
    mxf_write_metadata_key(pb, 0x013000);
402
    PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
403

    
404
    version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
405
        "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
406
    length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
407
    klv_encode_ber_length(pb, length);
408

    
409
    // write uid
410
    mxf_write_local_tag(pb, 16, 0x3C0A);
411
    mxf_write_uuid(pb, Identification, 0);
412
    PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
413

    
414
    // write generation uid
415
    mxf_write_local_tag(pb, 16, 0x3C09);
416
    mxf_write_uuid(pb, Identification, 1);
417

    
418
    mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
419
    mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
420
    mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
421

    
422
    // write product uid
423
    mxf_write_local_tag(pb, 16, 0x3C05);
424
    mxf_write_uuid(pb, Identification, 2);
425

    
426
    // write modified date
427
    mxf_write_local_tag(pb, 8, 0x3C06);
428
    put_be64(pb, 0);
429
}
430

    
431
static void mxf_write_content_storage(AVFormatContext *s)
432
{
433
    ByteIOContext *pb = s->pb;
434

    
435
    mxf_write_metadata_key(pb, 0x011800);
436
    PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
437
    klv_encode_ber_length(pb, 92);
438

    
439
    // write uid
440
    mxf_write_local_tag(pb, 16, 0x3C0A);
441
    mxf_write_uuid(pb, ContentStorage, 0);
442
    PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
443

    
444
    // write package reference
445
    mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
446
    mxf_write_refs_count(pb, 2);
447
    mxf_write_uuid(pb, MaterialPackage, 0);
448
    mxf_write_uuid(pb, SourcePackage, 0);
449

    
450
    // write essence container data
451
    mxf_write_local_tag(pb, 8 + 16, 0x1902);
452
    mxf_write_refs_count(pb, 1);
453
    mxf_write_uuid(pb, EssenceContainerData, 0);
454
}
455

    
456
static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
457
{
458
    ByteIOContext *pb = s->pb;
459
    MXFStreamContext *sc = st->priv_data;
460

    
461
    mxf_write_metadata_key(pb, 0x013b00);
462
    PRINT_KEY(s, "track key", pb->buf_ptr - 16);
463
    klv_encode_ber_length(pb, 80);
464

    
465
    // write track uid
466
    mxf_write_local_tag(pb, 16, 0x3C0A);
467
    mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
468
    PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
469

    
470
    // write track id
471
    mxf_write_local_tag(pb, 4, 0x4801);
472
    put_be32(pb, st->index);
473

    
474
    // write track number
475
    mxf_write_local_tag(pb, 4, 0x4804);
476
    if (type == MaterialPackage)
477
        put_be32(pb, 0); // track number of material package is 0
478
    else
479
        put_buffer(pb, sc->track_essence_element_key + 12, 4);
480

    
481
    mxf_write_local_tag(pb, 8, 0x4B01);
482
    put_be32(pb, st->time_base.den);
483
    put_be32(pb, st->time_base.num);
484

    
485
    // write origin
486
    mxf_write_local_tag(pb, 8, 0x4B02);
487
    put_be64(pb, 0);
488

    
489
    // write sequence refs
490
    mxf_write_local_tag(pb, 16, 0x4803);
491
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
492
}
493

    
494
static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
495
{
496
    const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
497
    MXFStreamContext *sc = st->priv_data;
498

    
499
    // find data define uls
500
    mxf_write_local_tag(pb, 16, 0x0201);
501
    put_buffer(pb, data_def_ul->uid, 16);
502

    
503
    // write duration
504
    mxf_write_local_tag(pb, 8, 0x0202);
505
    put_be64(pb, sc->duration);
506
}
507

    
508
static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
509
{
510
    ByteIOContext *pb = s->pb;
511

    
512
    mxf_write_metadata_key(pb, 0x010f00);
513
    PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
514
    klv_encode_ber_length(pb, 80);
515

    
516
    mxf_write_local_tag(pb, 16, 0x3C0A);
517
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
518

    
519
    PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
520
    mxf_write_common_fields(pb, st);
521

    
522
    // write structural component
523
    mxf_write_local_tag(pb, 16 + 8, 0x1001);
524
    mxf_write_refs_count(pb, 1);
525
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
526
}
527

    
528
static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
529
{
530
    ByteIOContext *pb = s->pb;
531
    int i;
532

    
533
    mxf_write_metadata_key(pb, 0x011100);
534
    PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
535
    klv_encode_ber_length(pb, 108);
536

    
537
    // write uid
538
    mxf_write_local_tag(pb, 16, 0x3C0A);
539
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
540

    
541
    PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
542
    mxf_write_common_fields(pb, st);
543

    
544
    // write start_position
545
    mxf_write_local_tag(pb, 8, 0x1201);
546
    put_be64(pb, 0);
547

    
548
    // write source package uid, end of the reference
549
    mxf_write_local_tag(pb, 32, 0x1101);
550
    if (type == SourcePackage) {
551
        for (i = 0; i < 4; i++)
552
            put_be64(pb, 0);
553
    } else
554
        mxf_write_umid(pb, SourcePackage, 0);
555

    
556
    // write source track id
557
    mxf_write_local_tag(pb, 4, 0x1102);
558
    if (type == SourcePackage)
559
        put_be32(pb, 0);
560
    else
561
        put_be32(pb, st->index);
562
}
563

    
564
static void mxf_write_multi_descriptor(AVFormatContext *s)
565
{
566
    ByteIOContext *pb = s->pb;
567
    int i;
568

    
569
    mxf_write_metadata_key(pb, 0x014400);
570
    PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
571
    klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
572

    
573
    mxf_write_local_tag(pb, 16, 0x3C0A);
574
    mxf_write_uuid(pb, MultipleDescriptor, 0);
575
    PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
576

    
577
    // write sample rate
578
    mxf_write_local_tag(pb, 8, 0x3001);
579
    put_be32(pb, s->streams[0]->time_base.den);
580
    put_be32(pb, s->streams[0]->time_base.num);
581

    
582
    // write essence container ul
583
    mxf_write_local_tag(pb, 16, 0x3004);
584
    put_buffer(pb, multiple_desc_ul, 16);
585

    
586
    // write sub descriptor refs
587
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
588
    mxf_write_refs_count(pb, s->nb_streams);
589
    for (i = 0; i < s->nb_streams; i++)
590
        mxf_write_uuid(pb, SubDescriptor, i);
591
}
592

    
593
static void mxf_write_generic_desc(ByteIOContext *pb, AVStream *st, const UID key, unsigned size)
594
{
595
    MXFStreamContext *sc = st->priv_data;
596

    
597
    put_buffer(pb, key, 16);
598
    klv_encode_ber_length(pb, size);
599

    
600
    mxf_write_local_tag(pb, 16, 0x3C0A);
601
    mxf_write_uuid(pb, SubDescriptor, st->index);
602

    
603
    mxf_write_local_tag(pb, 4, 0x3006);
604
    put_be32(pb, st->index);
605

    
606
    mxf_write_local_tag(pb, 8, 0x3001);
607
    put_be32(pb, st->time_base.den);
608
    put_be32(pb, st->time_base.num);
609

    
610
    mxf_write_local_tag(pb, 16, 0x3004);
611
    put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
612
}
613

    
614
static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
615
static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
616
static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
617

    
618
static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
619
{
620
    MXFStreamContext *sc = st->priv_data;
621
    ByteIOContext *pb = s->pb;
622
    int stored_height = (st->codec->height+15)/16*16;
623
    AVRational dar;
624
    int f1, f2;
625

    
626
    mxf_write_generic_desc(pb, st, mxf_mpegvideo_descriptor_key, 153+sc->interlaced*4);
627

    
628
    mxf_write_local_tag(pb, 4, 0x3203);
629
    put_be32(pb, st->codec->width);
630

    
631
    mxf_write_local_tag(pb, 4, 0x3202);
632
    put_be32(pb, stored_height>>sc->interlaced);
633

    
634
    mxf_write_local_tag(pb, 4, 0x3209);
635
    put_be32(pb, st->codec->width);
636

    
637
    mxf_write_local_tag(pb, 4, 0x3208);
638
    put_be32(pb, st->codec->height>>sc->interlaced);
639

    
640
    // bit rate
641
    mxf_write_local_tag(pb, 4, 0x8000);
642
    put_be32(pb, st->codec->bit_rate);
643

    
644
    // frame layout
645
    mxf_write_local_tag(pb, 1, 0x320C);
646
    put_byte(pb, sc->interlaced);
647

    
648
    // video line map
649
    switch (st->codec->height) {
650
    case  576: f1 = 23; f2 = 336; break;
651
    case  608: f1 =  7; f2 = 320; break;
652
    case  480: f1 = 20; f2 = 283; break;
653
    case  512: f1 =  7; f2 = 270; break;
654
    case  720: f1 = 26; f2 =   0; break; // progressive
655
    case 1080: f1 = 21; f2 = 584; break;
656
    default:   f1 =  0; f2 =   0; break;
657
    }
658

    
659
    if (!sc->interlaced) {
660
        f2  = 0;
661
        f1 *= 2;
662
    }
663

    
664
    mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
665
    put_be32(pb, sc->interlaced ? 2 : 1);
666
    put_be32(pb, 4);
667
    put_be32(pb, f1);
668
    if (sc->interlaced)
669
        put_be32(pb, f2);
670

    
671
    av_reduce(&dar.num, &dar.den,
672
              st->codec->width*st->codec->sample_aspect_ratio.num,
673
              st->codec->height*st->codec->sample_aspect_ratio.den,
674
              1024*1024);
675

    
676
    mxf_write_local_tag(pb, 8, 0x320E);
677
    put_be32(pb, dar.num);
678
    put_be32(pb, dar.den);
679

    
680
    mxf_write_local_tag(pb, 16, 0x3201);
681
    put_buffer(pb, *sc->codec_ul, 16);
682
}
683

    
684
static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
685
{
686
    ByteIOContext *pb = s->pb;
687

    
688
    mxf_write_generic_desc(pb, st, key, size);
689

    
690
    // audio locked
691
    mxf_write_local_tag(pb, 1, 0x3D02);
692
    put_byte(pb, 1);
693

    
694
    // write audio sampling rate
695
    mxf_write_local_tag(pb, 8, 0x3D03);
696
    put_be32(pb, st->codec->sample_rate);
697
    put_be32(pb, 1);
698

    
699
    mxf_write_local_tag(pb, 4, 0x3D07);
700
    put_be32(pb, st->codec->channels);
701

    
702
    mxf_write_local_tag(pb, 4, 0x3D01);
703
    put_be32(pb, st->codec->bits_per_coded_sample);
704
}
705

    
706
static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
707
{
708
    ByteIOContext *pb = s->pb;
709

    
710
    mxf_write_generic_sound_desc(s, st, key, size);
711

    
712
    mxf_write_local_tag(pb, 2, 0x3D0A);
713
    put_be16(pb, st->codec->block_align);
714

    
715
    // avg bytes per sec
716
    mxf_write_local_tag(pb, 4, 0x3D09);
717
    put_be32(pb, st->codec->block_align*st->codec->sample_rate);
718
}
719

    
720
static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
721
{
722
    mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
723
}
724

    
725
static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
726
{
727
    mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
728
}
729

    
730
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
731
{
732
    ByteIOContext *pb = s->pb;
733
    int i;
734

    
735
    if (type == MaterialPackage) {
736
        mxf_write_metadata_key(pb, 0x013600);
737
        PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
738
        klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
739
    } else {
740
        mxf_write_metadata_key(pb, 0x013700);
741
        PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
742
        klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
743
    }
744

    
745
    // write uid
746
    mxf_write_local_tag(pb, 16, 0x3C0A);
747
    mxf_write_uuid(pb, type, 0);
748
    av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
749
    PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
750

    
751
    // write package umid
752
    mxf_write_local_tag(pb, 32, 0x4401);
753
    mxf_write_umid(pb, type, 0);
754
    PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
755

    
756
    // write create date
757
    mxf_write_local_tag(pb, 8, 0x4405);
758
    put_be64(pb, 0);
759

    
760
    // write modified date
761
    mxf_write_local_tag(pb, 8, 0x4404);
762
    put_be64(pb, 0);
763

    
764
    // write track refs
765
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
766
    mxf_write_refs_count(pb, s->nb_streams);
767
    for (i = 0; i < s->nb_streams; i++)
768
        mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
769

    
770
    // write multiple descriptor reference
771
    if (type == SourcePackage) {
772
        mxf_write_local_tag(pb, 16, 0x4701);
773
        if (s->nb_streams > 1) {
774
            mxf_write_uuid(pb, MultipleDescriptor, 0);
775
            mxf_write_multi_descriptor(s);
776
        } else
777
            mxf_write_uuid(pb, SubDescriptor, 0);
778
    }
779

    
780
    for (i = 0; i < s->nb_streams; i++) {
781
        AVStream *st = s->streams[i];
782
        mxf_write_track(s, st, type);
783
        mxf_write_sequence(s, st, type);
784
        mxf_write_structural_component(s, st, type);
785

    
786
        if (type == SourcePackage) {
787
            MXFStreamContext *sc = st->priv_data;
788
            mxf_essence_container_uls[sc->index].write_desc(s, st);
789
        }
790
    }
791
}
792

    
793
static int mxf_write_essence_container_data(AVFormatContext *s)
794
{
795
    ByteIOContext *pb = s->pb;
796

    
797
    mxf_write_metadata_key(pb, 0x012300);
798
    klv_encode_ber_length(pb, 72);
799

    
800
    mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
801
    mxf_write_uuid(pb, EssenceContainerData, 0);
802

    
803
    mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
804
    mxf_write_umid(pb, SourcePackage, 0);
805

    
806
    mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
807
    put_be32(pb, 1);
808

    
809
    mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
810
    put_be32(pb, 2);
811

    
812
    return 0;
813
}
814

    
815
static int mxf_write_header_metadata_sets(AVFormatContext *s)
816
{
817
    mxf_write_preface(s);
818
    mxf_write_identification(s);
819
    mxf_write_content_storage(s);
820
    mxf_write_package(s, MaterialPackage);
821
    mxf_write_package(s, SourcePackage);
822
    mxf_write_essence_container_data(s);
823
    return 0;
824
}
825

    
826
static int mxf_write_index_table_segment(AVFormatContext *s)
827
{
828
    MXFContext *mxf = s->priv_data;
829
    ByteIOContext *pb = s->pb;
830
    int i, j, k, ret, key_offset = 0;
831
    int temporal_reordering = 0;
832

    
833
    av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
834

    
835
    put_buffer(pb, index_table_segment_key, 16);
836
    ret = klv_encode_ber_length(pb, 109 + s->nb_streams*6 +
837
                                mxf->edit_units_count*(11+(s->nb_streams-1)*4));
838

    
839
    // instance id
840
    mxf_write_local_tag(pb, 16, 0x3C0A);
841
    mxf_write_uuid(pb, IndexTableSegment, 0);
842

    
843
    // index edit rate
844
    mxf_write_local_tag(pb, 8, 0x3F0B);
845
    put_be32(pb, mxf->time_base.num);
846
    put_be32(pb, mxf->time_base.den);
847

    
848
    // index start position
849
    mxf_write_local_tag(pb, 8, 0x3F0C);
850
    put_be64(pb, 0);
851

    
852
    // index duration
853
    mxf_write_local_tag(pb, 8, 0x3F0D);
854
    put_be64(pb, mxf->edit_units_count);
855

    
856
    // edit unit byte count
857
    mxf_write_local_tag(pb, 4, 0x3F05);
858
    put_be32(pb, 0);
859

    
860
    // index sid
861
    mxf_write_local_tag(pb, 4, 0x3F06);
862
    put_be32(pb, 2);
863

    
864
    // body sid
865
    mxf_write_local_tag(pb, 4, 0x3F07);
866
    put_be32(pb, 1);
867

    
868
    // slice count - 1
869
    mxf_write_local_tag(pb, 1, 0x3F08);
870
    put_byte(pb, s->nb_streams-1);
871

    
872
    // delta entry array
873
    mxf_write_local_tag(pb, 8 + s->nb_streams*6, 0x3F09);
874
    put_be32(pb, s->nb_streams); // num of entries
875
    put_be32(pb, 6);             // size of one entry
876
    for (i = 0; i < s->nb_streams; i++) {
877
        AVStream *st = s->streams[i];
878
        MXFStreamContext *sc = st->priv_data;
879
        put_byte(pb, sc->temporal_reordering);
880
        if (sc->temporal_reordering)
881
            temporal_reordering = 1;
882
        put_byte(pb, i);
883
        put_be32(pb, 0); // element delta
884
    }
885

    
886
    mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+(s->nb_streams-1)*4), 0x3F0A);
887
    put_be32(pb, mxf->edit_units_count);  // num of entries
888
    put_be32(pb, 11+(s->nb_streams-1)*4); // size of one entry
889
    for (i = 0; i < mxf->edit_units_count; i++) {
890
        if (mxf->index_entries[i].flags & 0x40)
891
            key_offset = 0;
892
        if (temporal_reordering) {
893
            int temporal_offset = 0;
894
            for (j = i+1; j < mxf->edit_units_count; j++) {
895
                temporal_offset++;
896
                if (mxf->index_entries[j].flags & 0x10) { // backward prediction
897
                    // next is not b, so is reordered
898
                    if (!(mxf->index_entries[i+1].flags & 0x10)) {
899
                        if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
900
                            temporal_offset = 0;
901
                        else
902
                            temporal_offset = -temporal_offset;
903
                    }
904
                    break;
905
                }
906
            }
907
            put_byte(pb, temporal_offset);
908
        } else
909
            put_byte(pb, 0);
910
        put_byte(pb, key_offset);
911
        put_byte(pb, mxf->index_entries[i].flags);
912
        // stream offset
913
        put_be64(pb, mxf->index_entries[i].offset - mxf->index_entries[0].offset);
914
        for (k = 0; k < s->nb_streams; k++) {
915
            if (mxf->index_entries[i].slice_offset[k])
916
                put_be32(pb, mxf->index_entries[i].slice_offset[k]);
917
        }
918
        key_offset--;
919
    }
920

    
921
    return ret;
922
}
923

    
924
static void mxf_write_partition(AVFormatContext *s, int bodysid, int indexsid,
925
                                const uint8_t *key, int write_metadata)
926
{
927
    MXFContext *mxf = s->priv_data;
928
    ByteIOContext *pb = s->pb;
929
    int64_t header_byte_count_offset;
930

    
931
    // write klv
932
    put_buffer(pb, key, 16);
933

    
934
    klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
935

    
936
    // write partition value
937
    put_be16(pb, 1); // majorVersion
938
    put_be16(pb, 2); // minorVersion
939
    put_be32(pb, 1); // kagSize
940

    
941
    put_be64(pb, url_ftell(pb) - 25); // thisPartition
942
    put_be64(pb, 0); // previousPartition
943

    
944
    put_be64(pb, mxf->footer_partition_offset); // footerPartition
945

    
946
    // set offset
947
    header_byte_count_offset = url_ftell(pb);
948
    put_be64(pb, 0); // headerByteCount, update later
949

    
950
    // indexTable
951
    put_be64(pb, indexsid ? 19 + 109 + s->nb_streams*6 +
952
             mxf->edit_units_count*(11+(s->nb_streams-1)*4) : 0); // indexByteCount
953
    put_be32(pb, indexsid); // indexSID
954
    put_be64(pb, 0); // bodyOffset
955

    
956
    put_be32(pb, bodysid); // bodySID
957
    put_buffer(pb, op1a_ul, 16); // operational pattern
958

    
959
    // essence container
960
    mxf_write_essence_container_refs(s);
961

    
962
    if (write_metadata) {
963
        // mark the start of the headermetadata and calculate metadata size
964
        int64_t pos, start = url_ftell(s->pb);
965
        mxf_write_primer_pack(s);
966
        mxf_write_header_metadata_sets(s);
967
        pos = url_ftell(s->pb);
968
        // update header_byte_count
969
        url_fseek(pb, header_byte_count_offset, SEEK_SET);
970
        put_be64(pb, pos - start);
971
        url_fseek(pb, pos, SEEK_SET);
972
    }
973

    
974
    put_flush_packet(pb);
975
}
976

    
977
static const UID mxf_mpeg2_codec_uls[] = {
978
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
979
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
980
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
981
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
982
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
983
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
984
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
985
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
986
};
987

    
988
static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
989
{
990
    if (avctx->profile == 4) { // Main
991
        if (avctx->level == 8) // Main
992
            return avctx->gop_size ?
993
                &mxf_mpeg2_codec_uls[1] :
994
                &mxf_mpeg2_codec_uls[0];
995
        else if (avctx->level == 4) // High
996
            return avctx->gop_size ?
997
                &mxf_mpeg2_codec_uls[5] :
998
                &mxf_mpeg2_codec_uls[4];
999
    } else if (avctx->profile == 0) { // 422
1000
        if (avctx->level == 5) // Main
1001
            return avctx->gop_size ?
1002
                &mxf_mpeg2_codec_uls[3] :
1003
                &mxf_mpeg2_codec_uls[2];
1004
        else if (avctx->level == 2) // High
1005
            return avctx->gop_size ?
1006
                &mxf_mpeg2_codec_uls[7] :
1007
                &mxf_mpeg2_codec_uls[6];
1008
    }
1009
    return NULL;
1010
}
1011

    
1012
static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1013
{
1014
    MXFContext *mxf = s->priv_data;
1015
    MXFStreamContext *sc = st->priv_data;
1016
    uint32_t c = -1;
1017
    int i;
1018

    
1019
    mxf->index_entries[mxf->edit_units_count].flags = 0;
1020

    
1021
    for(i = 0; i < pkt->size - 4; i++) {
1022
        c = (c<<8) + pkt->data[i];
1023
        if (c == 0x1B5) {
1024
            if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1025
                st->codec->profile = pkt->data[i+1] & 0x07;
1026
                st->codec->level   = pkt->data[i+2] >> 4;
1027
            } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1028
                sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1029
                break;
1030
            }
1031
        } else if (c == 0x1b8) { // gop
1032
            if (i + 4 < pkt->size && pkt->data[i+4]>>6 & 0x01) // closed
1033
                mxf->index_entries[mxf->edit_units_count].flags |= 0x80; // random access
1034
        } else if (c == 0x1b3) { // seq
1035
            mxf->index_entries[mxf->edit_units_count].flags |= 0x40;
1036
        } else if (c == 0x100) { // pic
1037
            int pict_type = (pkt->data[i+2]>>3) & 0x07;
1038
            if (pict_type == 2) { // P frame
1039
                mxf->index_entries[mxf->edit_units_count].flags |= 0x22;
1040
                st->codec->gop_size = 1;
1041
            } else if (pict_type == 3) { // B frame
1042
                mxf->index_entries[mxf->edit_units_count].flags |= 0x33;
1043
                sc->temporal_reordering = -1;
1044
            } else if (!pict_type) {
1045
                av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1046
                return 0;
1047
            }
1048
        }
1049
    }
1050
    sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1051
    return !!sc->codec_ul;
1052
}
1053

    
1054
static int ff_audio_interleave_init(AVFormatContext *s, const int *samples_per_frame)
1055
{
1056
    int i;
1057

    
1058
    if (!samples_per_frame)
1059
        return -1;
1060

    
1061
    for (i = 0; i < s->nb_streams; i++) {
1062
        AVStream *st = s->streams[i];
1063
        AudioInterleaveContext *aic = st->priv_data;
1064

    
1065
        if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1066
            aic->sample_size = (st->codec->channels *
1067
                                av_get_bits_per_sample(st->codec->codec_id)) / 8;
1068
            if (!aic->sample_size) {
1069
                av_log(s, AV_LOG_ERROR, "could not compute sample size\n");
1070
                return -1;
1071
            }
1072
            aic->samples_per_frame = samples_per_frame;
1073
            aic->samples = aic->samples_per_frame;
1074

    
1075
            av_fifo_init(&aic->fifo, 100 * *aic->samples);
1076
        }
1077
    }
1078

    
1079
    return 0;
1080
}
1081

    
1082
static void ff_audio_interleave_close(AVFormatContext *s)
1083
{
1084
    int i;
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
            av_fifo_free(&aic->fifo);
1091
    }
1092
}
1093

    
1094
static int mxf_write_header(AVFormatContext *s)
1095
{
1096
    MXFContext *mxf = s->priv_data;
1097
    int i;
1098
    uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1099
    const int *samples_per_frame = NULL;
1100

    
1101
    if (s->nb_streams > 17) {
1102
        av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
1103
        return -1;
1104
    }
1105

    
1106
    for (i = 0; i < s->nb_streams; i++) {
1107
        AVStream *st = s->streams[i];
1108
        MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1109
        if (!sc)
1110
            return AVERROR(ENOMEM);
1111
        st->priv_data = sc;
1112

    
1113
        if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1114
            if (!av_cmp_q(st->codec->time_base, (AVRational){ 1, 25 })) {
1115
                samples_per_frame = PAL_samples_per_frame;
1116
                mxf->time_base = (AVRational){ 1, 25 };
1117
            } else if (!av_cmp_q(st->codec->time_base, (AVRational){ 1001, 30000 })) {
1118
                samples_per_frame = NTSC_samples_per_frame;
1119
                mxf->time_base = (AVRational){ 1001, 30000 };
1120
            } else {
1121
                av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1122
                return -1;
1123
            }
1124
            mxf->edit_unit_start = st->index;
1125
        } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1126
            if (st->codec->sample_rate != 48000) {
1127
                av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1128
                return -1;
1129
            }
1130
        }
1131
        sc->duration = -1;
1132

    
1133
        sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1134
        if (sc->index == -1) {
1135
            av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1136
                   "codec not currently supported in container\n", i);
1137
            return -1;
1138
        }
1139

    
1140
        sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1141

    
1142
        if (!present[sc->index]) {
1143
            mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
1144
            present[sc->index] = 1;
1145
        } else
1146
            present[sc->index]++;
1147
        memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1148
        sc->track_essence_element_key[15] = present[sc->index];
1149
        PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1150
    }
1151

    
1152
    for (i = 0; i < s->nb_streams; i++) {
1153
        MXFStreamContext *sc = s->streams[i]->priv_data;
1154
        av_set_pts_info(s->streams[i], 64, mxf->time_base.num, mxf->time_base.den);
1155
        // update element count
1156
        sc->track_essence_element_key[13] = present[sc->index];
1157
        sc->order = AV_RB32(sc->track_essence_element_key+12);
1158
    }
1159

    
1160
    if (!samples_per_frame)
1161
        samples_per_frame = PAL_samples_per_frame;
1162

    
1163
    if (ff_audio_interleave_init(s, samples_per_frame) < 0)
1164
        return -1;
1165

    
1166
    return 0;
1167
}
1168

    
1169
static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1170
{
1171
    MXFContext *mxf = s->priv_data;
1172
    ByteIOContext *pb = s->pb;
1173
    AVStream *st = s->streams[pkt->stream_index];
1174
    MXFStreamContext *sc = st->priv_data;
1175

    
1176
    if (!(mxf->edit_units_count % MXF_INDEX_CLUSTER_SIZE)) {
1177
        mxf->index_entries = av_realloc(mxf->index_entries,
1178
            (mxf->edit_units_count + MXF_INDEX_CLUSTER_SIZE)*
1179
             sizeof(*mxf->index_entries));
1180
        if (!mxf->index_entries) {
1181
            av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1182
            return -1;
1183
        }
1184
    }
1185

    
1186
    if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1187
        if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
1188
            av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1189
            return -1;
1190
        }
1191
    }
1192

    
1193
    if (!mxf->header_written) {
1194
        mxf_write_partition(s, 1, 0, header_open_partition_key, 1);
1195
        mxf->header_written = 1;
1196
    }
1197

    
1198
    if (st->index == mxf->edit_unit_start) {
1199
        mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1200
        mxf->index_entries[mxf->edit_units_count].slice_offset[st->index] = 0;
1201
        mxf->edit_units_count++;
1202
    } else {
1203
        mxf->index_entries[mxf->edit_units_count-1].slice_offset[st->index] =
1204
            url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
1205
    }
1206

    
1207
    put_buffer(pb, sc->track_essence_element_key, 16); // write key
1208
    klv_encode_ber_length(pb, pkt->size); // write length
1209
    put_buffer(pb, pkt->data, pkt->size); // write value
1210

    
1211
    sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
1212

    
1213
    put_flush_packet(pb);
1214
    return 0;
1215
}
1216

    
1217
static void mxf_write_random_index_pack(AVFormatContext *s)
1218
{
1219
    MXFContext *mxf = s->priv_data;
1220
    ByteIOContext *pb = s->pb;
1221
    uint64_t pos = url_ftell(pb);
1222

    
1223
    put_buffer(pb, random_index_pack_key, 16);
1224
    klv_encode_ber_length(pb, 28);
1225

    
1226
    put_be32(pb, 1); // BodySID of header partition
1227
    put_be64(pb, 0); // offset of header partition
1228

    
1229
    put_be32(pb, 0); // BodySID of footer partition
1230
    put_be64(pb, mxf->footer_partition_offset);
1231

    
1232
    put_be32(pb, url_ftell(pb) - pos + 4);
1233
}
1234

    
1235
static int mxf_write_footer(AVFormatContext *s)
1236
{
1237
    MXFContext *mxf = s->priv_data;
1238
    ByteIOContext *pb = s->pb;
1239

    
1240
    mxf->footer_partition_offset = url_ftell(pb);
1241
    mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1242

    
1243
    mxf_write_index_table_segment(s);
1244

    
1245
    mxf_write_random_index_pack(s);
1246

    
1247
    if (!url_is_streamed(s->pb)) {
1248
        url_fseek(pb, 0, SEEK_SET);
1249
        mxf_write_partition(s, 1, 0, header_closed_partition_key, 1);
1250
    }
1251

    
1252
    ff_audio_interleave_close(s);
1253

    
1254
    mxf_free(s);
1255
    return 0;
1256
}
1257

    
1258
static int mxf_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
1259
                                           int stream_index, int flush)
1260
{
1261
    AVStream *st = s->streams[stream_index];
1262
    AudioInterleaveContext *aic = st->priv_data;
1263

    
1264
    int size = FFMIN(av_fifo_size(&aic->fifo), *aic->samples * aic->sample_size);
1265
    if (!size || (!flush && size == av_fifo_size(&aic->fifo)))
1266
        return 0;
1267

    
1268
    av_new_packet(pkt, size);
1269
    av_fifo_read(&aic->fifo, pkt->data, size);
1270

    
1271
    pkt->dts = pkt->pts = aic->dts;
1272
    pkt->duration = av_rescale_q(*aic->samples,
1273
                                 (AVRational){ 1, st->codec->sample_rate },
1274
                                 st->time_base);
1275
    pkt->stream_index = stream_index;
1276
    aic->dts += pkt->duration;
1277

    
1278
    aic->samples++;
1279
    if (!*aic->samples)
1280
        aic->samples = aic->samples_per_frame;
1281

    
1282
    return size;
1283
}
1284

    
1285
static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1286
{
1287
    AVPacketList *pktl;
1288
    int stream_count = 0;
1289
    int streams[MAX_STREAMS];
1290

    
1291
    memset(streams, 0, sizeof(streams));
1292
    pktl = s->packet_buffer;
1293
    while (pktl) {
1294
        //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1295
        if (!streams[pktl->pkt.stream_index])
1296
            stream_count++;
1297
        streams[pktl->pkt.stream_index]++;
1298
        pktl = pktl->next;
1299
    }
1300

    
1301
    if (stream_count && (s->nb_streams == stream_count || flush)) {
1302
        pktl = s->packet_buffer;
1303
        if (s->nb_streams != stream_count) {
1304
            MXFContext *mxf = s->priv_data;
1305
            AVPacketList *first = NULL;
1306
            // find first packet in edit unit
1307
            while (pktl) {
1308
                AVStream *st = s->streams[pktl->pkt.stream_index];
1309
                if (st->index == mxf->edit_unit_start)
1310
                    break;
1311
                else if (!first)
1312
                    first = pktl;
1313
                pktl = pktl->next;
1314
            }
1315
            // purge packet queue
1316
            while (pktl) {
1317
                AVPacketList *next = pktl->next;
1318
                av_free_packet(&pktl->pkt);
1319
                av_freep(&pktl);
1320
                pktl = next;
1321
            }
1322
            if (!first)
1323
                goto out;
1324
            pktl = first;
1325
        }
1326

    
1327
        *out = pktl->pkt;
1328
        //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1329
        s->packet_buffer = pktl->next;
1330
        av_freep(&pktl);
1331
        return 1;
1332
    } else {
1333
    out:
1334
        av_init_packet(out);
1335
        return 0;
1336
    }
1337
}
1338

    
1339
static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1340
{
1341
    AVStream *st  = s->streams[pkt ->stream_index];
1342
    AVStream *st2 = s->streams[next->stream_index];
1343
    MXFStreamContext *sc  = st ->priv_data;
1344
    MXFStreamContext *sc2 = st2->priv_data;
1345

    
1346
    int64_t left  = st2->time_base.num * (int64_t)st ->time_base.den;
1347
    int64_t right = st ->time_base.num * (int64_t)st2->time_base.den;
1348

    
1349
    return next->dts * left > pkt->dts * right || // FIXME this can overflow
1350
        (next->dts * left == pkt->dts * right && sc->order < sc2->order);
1351
}
1352

    
1353
static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1354
{
1355
    int i;
1356

    
1357
    if (pkt) {
1358
        AVStream *st = s->streams[pkt->stream_index];
1359
        AudioInterleaveContext *aic = st->priv_data;
1360
        if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1361
            av_fifo_generic_write(&aic->fifo, pkt->data, pkt->size, NULL);
1362
        } else {
1363
            // rewrite pts and dts to be decoded time line position
1364
            pkt->pts = pkt->dts = aic->dts;
1365
            aic->dts += pkt->duration;
1366
            ff_interleave_add_packet(s, pkt, mxf_compare_timestamps);
1367
        }
1368
        pkt = NULL;
1369
    }
1370

    
1371
    for (i = 0; i < s->nb_streams; i++) {
1372
        AVStream *st = s->streams[i];
1373
        if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1374
            AVPacket new_pkt;
1375
            while (mxf_interleave_new_audio_packet(s, &new_pkt, i, flush))
1376
                ff_interleave_add_packet(s, &new_pkt, mxf_compare_timestamps);
1377
        }
1378
    }
1379

    
1380
    return mxf_interleave_get_packet(s, out, pkt, flush);
1381
}
1382

    
1383
AVOutputFormat mxf_muxer = {
1384
    "mxf",
1385
    NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1386
    NULL,
1387
    "mxf",
1388
    sizeof(MXFContext),
1389
    CODEC_ID_PCM_S16LE,
1390
    CODEC_ID_MPEG2VIDEO,
1391
    mxf_write_header,
1392
    mxf_write_packet,
1393
    mxf_write_footer,
1394
    0,
1395
    NULL,
1396
    mxf_interleave,
1397
};