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ffmpeg / libavformat / mxfenc.c @ 832404ce

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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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} 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 */
157
    { 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 */
160
    // 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 */
162
    { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
163
    { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
164
    { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
165
    { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
166
    { 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 */
169
    { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
170
    // 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 */
172
    { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
173
    // Package
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    { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
175
    { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
176
    { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
177
    { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
178
    { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
179
    // Track
180
    { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
181
    { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
182
    { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
183
    { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
184
    { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
185
    // Sequence
186
    { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
187
    { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
188
    { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
189
    // Source Clip
190
    { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
191
    { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
192
    { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
193
    // File Descriptor
194
    { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
195
    { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
196
    { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
197
    { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
198
    // Generic Picture Essence Descriptor
199
    { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
200
    { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
201
    { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
202
    { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
203
    { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
204
    { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
205
    { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
206
    { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
207
    // Generic Sound Essence Descriptor
208
    { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
209
    { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
210
    { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
211
    { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
212
    { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
213
    // Index Table Segment
214
    { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
215
    { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
216
    { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
217
    { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
218
    { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
219
    { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
220
    { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
221
    { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
222
    // MPEG video Descriptor
223
    { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
224
    // Wave Audio Essence Descriptor
225
    { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
226
    { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
227
};
228

    
229
static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
230
{
231
    put_buffer(pb, uuid_base, 12);
232
    put_be16(pb, type);
233
    put_be16(pb, value);
234
}
235

    
236
static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
237
{
238
    put_buffer(pb, umid_base, 16);
239
    mxf_write_uuid(pb, type, value);
240
}
241

    
242
static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
243
{
244
    put_be32(pb, ref_count);
245
    put_be32(pb, 16);
246
}
247

    
248
static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
249
{
250
    // Determine the best BER size
251
    int size;
252
    if (len < 128) {
253
        //short form
254
        put_byte(pb, len);
255
        return 1;
256
    }
257

    
258
    size = (av_log2(len) >> 3) + 1;
259

    
260
    // long form
261
    put_byte(pb, 0x80 + size);
262
    while(size) {
263
        size--;
264
        put_byte(pb, len >> 8 * size & 0xff);
265
    }
266
    return 0;
267
}
268

    
269
/*
270
 * Get essence container ul index
271
 */
272
static int mxf_get_essence_container_ul_index(enum CodecID id)
273
{
274
    int i;
275
    for (i = 0; mxf_essence_mappings[i].id; i++)
276
        if (mxf_essence_mappings[i].id == id)
277
            return mxf_essence_mappings[i].index;
278
    return -1;
279
}
280

    
281
static void mxf_write_primer_pack(AVFormatContext *s)
282
{
283
    ByteIOContext *pb = s->pb;
284
    int local_tag_number, i = 0;
285

    
286
    local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
287

    
288
    put_buffer(pb, primer_pack_key, 16);
289
    klv_encode_ber_length(pb, local_tag_number * 18 + 8);
290

    
291
    put_be32(pb, local_tag_number); // local_tag num
292
    put_be32(pb, 18); // item size, always 18 according to the specs
293

    
294
    for (i = 0; i < local_tag_number; i++) {
295
        put_be16(pb, mxf_local_tag_batch[i].local_tag);
296
        put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
297
    }
298
}
299

    
300
static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
301
{
302
    put_be16(pb, tag);
303
    put_be16(pb, size);
304
}
305

    
306
static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
307
{
308
    put_buffer(pb, header_metadata_key, 13);
309
    put_be24(pb, value);
310
}
311

    
312
static void mxf_free(AVFormatContext *s)
313
{
314
    int i;
315

    
316
    for (i = 0; i < s->nb_streams; i++) {
317
        AVStream *st = s->streams[i];
318
        av_freep(&st->priv_data);
319
    }
320
}
321

    
322
static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
323
{
324
    const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
325
    while (uls->type != CODEC_TYPE_DATA) {
326
        if (type == uls->type)
327
            break;
328
        uls++;
329
    }
330
    return uls;
331
}
332

    
333
static void mxf_write_essence_container_refs(AVFormatContext *s)
334
{
335
    MXFContext *c = s->priv_data;
336
    ByteIOContext *pb = s->pb;
337
    int i;
338

    
339
    mxf_write_refs_count(pb, c->essence_container_count);
340
    av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
341
    for (i = 0; i < c->essence_container_count; i++) {
342
        put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
343
        PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
344
    }
345
}
346

    
347
static void mxf_write_preface(AVFormatContext *s)
348
{
349
    MXFContext *mxf = s->priv_data;
350
    ByteIOContext *pb = s->pb;
351

    
352
    mxf_write_metadata_key(pb, 0x012f00);
353
    PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
354
    klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
355

    
356
    // write preface set uid
357
    mxf_write_local_tag(pb, 16, 0x3C0A);
358
    mxf_write_uuid(pb, Preface, 0);
359
    PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
360

    
361
    // write create date as unknown
362
    mxf_write_local_tag(pb, 8, 0x3B02);
363
    put_be64(pb, 0);
364

    
365
    // write version
366
    mxf_write_local_tag(pb, 2, 0x3B05);
367
    put_be16(pb, 1);
368

    
369
    // write identification_refs
370
    mxf_write_local_tag(pb, 16 + 8, 0x3B06);
371
    mxf_write_refs_count(pb, 1);
372
    mxf_write_uuid(pb, Identification, 0);
373

    
374
    // write content_storage_refs
375
    mxf_write_local_tag(pb, 16, 0x3B03);
376
    mxf_write_uuid(pb, ContentStorage, 0);
377

    
378
    mxf_write_local_tag(pb, 16, 0x3B09);
379
    put_buffer(pb, op1a_ul, 16);
380

    
381
    // write essence_container_refs
382
    mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
383
    mxf_write_essence_container_refs(s);
384

    
385
    // write dm_scheme_refs
386
    mxf_write_local_tag(pb, 8, 0x3B0B);
387
    put_be64(pb, 0);
388
}
389

    
390
/*
391
 * Write a local tag containing an ascii string as utf-16
392
 */
393
static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
394
{
395
    int i, size = strlen(value);
396
    mxf_write_local_tag(pb, size*2, tag);
397
    for (i = 0; i < size; i++)
398
        put_be16(pb, value[i]);
399
}
400

    
401
static void mxf_write_identification(AVFormatContext *s)
402
{
403
    ByteIOContext *pb = s->pb;
404
    const char *company = "FFmpeg";
405
    const char *product = "OP1a Muxer";
406
    const char *version;
407
    int length;
408

    
409
    mxf_write_metadata_key(pb, 0x013000);
410
    PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
411

    
412
    version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
413
        "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
414
    length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
415
    klv_encode_ber_length(pb, length);
416

    
417
    // write uid
418
    mxf_write_local_tag(pb, 16, 0x3C0A);
419
    mxf_write_uuid(pb, Identification, 0);
420
    PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
421

    
422
    // write generation uid
423
    mxf_write_local_tag(pb, 16, 0x3C09);
424
    mxf_write_uuid(pb, Identification, 1);
425

    
426
    mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
427
    mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
428
    mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
429

    
430
    // write product uid
431
    mxf_write_local_tag(pb, 16, 0x3C05);
432
    mxf_write_uuid(pb, Identification, 2);
433

    
434
    // write modified date
435
    mxf_write_local_tag(pb, 8, 0x3C06);
436
    put_be64(pb, 0);
437
}
438

    
439
static void mxf_write_content_storage(AVFormatContext *s)
440
{
441
    ByteIOContext *pb = s->pb;
442

    
443
    mxf_write_metadata_key(pb, 0x011800);
444
    PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
445
    klv_encode_ber_length(pb, 92);
446

    
447
    // write uid
448
    mxf_write_local_tag(pb, 16, 0x3C0A);
449
    mxf_write_uuid(pb, ContentStorage, 0);
450
    PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
451

    
452
    // write package reference
453
    mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
454
    mxf_write_refs_count(pb, 2);
455
    mxf_write_uuid(pb, MaterialPackage, 0);
456
    mxf_write_uuid(pb, SourcePackage, 0);
457

    
458
    // write essence container data
459
    mxf_write_local_tag(pb, 8 + 16, 0x1902);
460
    mxf_write_refs_count(pb, 1);
461
    mxf_write_uuid(pb, EssenceContainerData, 0);
462
}
463

    
464
static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
465
{
466
    ByteIOContext *pb = s->pb;
467
    MXFStreamContext *sc = st->priv_data;
468

    
469
    mxf_write_metadata_key(pb, 0x013b00);
470
    PRINT_KEY(s, "track key", pb->buf_ptr - 16);
471
    klv_encode_ber_length(pb, 80);
472

    
473
    // write track uid
474
    mxf_write_local_tag(pb, 16, 0x3C0A);
475
    mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
476
    PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
477

    
478
    // write track id
479
    mxf_write_local_tag(pb, 4, 0x4801);
480
    put_be32(pb, st->index);
481

    
482
    // write track number
483
    mxf_write_local_tag(pb, 4, 0x4804);
484
    if (type == MaterialPackage)
485
        put_be32(pb, 0); // track number of material package is 0
486
    else
487
        put_buffer(pb, sc->track_essence_element_key + 12, 4);
488

    
489
    mxf_write_local_tag(pb, 8, 0x4B01);
490
    put_be32(pb, st->time_base.den);
491
    put_be32(pb, st->time_base.num);
492

    
493
    // write origin
494
    mxf_write_local_tag(pb, 8, 0x4B02);
495
    put_be64(pb, 0);
496

    
497
    // write sequence refs
498
    mxf_write_local_tag(pb, 16, 0x4803);
499
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
500
}
501

    
502
static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
503
{
504
    const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
505
    MXFStreamContext *sc = st->priv_data;
506

    
507
    // find data define uls
508
    mxf_write_local_tag(pb, 16, 0x0201);
509
    put_buffer(pb, data_def_ul->uid, 16);
510

    
511
    // write duration
512
    mxf_write_local_tag(pb, 8, 0x0202);
513
    put_be64(pb, sc->duration);
514
}
515

    
516
static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
517
{
518
    ByteIOContext *pb = s->pb;
519

    
520
    mxf_write_metadata_key(pb, 0x010f00);
521
    PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
522
    klv_encode_ber_length(pb, 80);
523

    
524
    mxf_write_local_tag(pb, 16, 0x3C0A);
525
    mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
526

    
527
    PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
528
    mxf_write_common_fields(pb, st);
529

    
530
    // write structural component
531
    mxf_write_local_tag(pb, 16 + 8, 0x1001);
532
    mxf_write_refs_count(pb, 1);
533
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
534
}
535

    
536
static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
537
{
538
    ByteIOContext *pb = s->pb;
539
    int i;
540

    
541
    mxf_write_metadata_key(pb, 0x011100);
542
    PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
543
    klv_encode_ber_length(pb, 108);
544

    
545
    // write uid
546
    mxf_write_local_tag(pb, 16, 0x3C0A);
547
    mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
548

    
549
    PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
550
    mxf_write_common_fields(pb, st);
551

    
552
    // write start_position
553
    mxf_write_local_tag(pb, 8, 0x1201);
554
    put_be64(pb, 0);
555

    
556
    // write source package uid, end of the reference
557
    mxf_write_local_tag(pb, 32, 0x1101);
558
    if (type == SourcePackage) {
559
        for (i = 0; i < 4; i++)
560
            put_be64(pb, 0);
561
    } else
562
        mxf_write_umid(pb, SourcePackage, 0);
563

    
564
    // write source track id
565
    mxf_write_local_tag(pb, 4, 0x1102);
566
    if (type == SourcePackage)
567
        put_be32(pb, 0);
568
    else
569
        put_be32(pb, st->index);
570
}
571

    
572
static void mxf_write_multi_descriptor(AVFormatContext *s)
573
{
574
    ByteIOContext *pb = s->pb;
575
    int i;
576

    
577
    mxf_write_metadata_key(pb, 0x014400);
578
    PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
579
    klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
580

    
581
    mxf_write_local_tag(pb, 16, 0x3C0A);
582
    mxf_write_uuid(pb, MultipleDescriptor, 0);
583
    PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
584

    
585
    // write sample rate
586
    mxf_write_local_tag(pb, 8, 0x3001);
587
    put_be32(pb, s->streams[0]->time_base.den);
588
    put_be32(pb, s->streams[0]->time_base.num);
589

    
590
    // write essence container ul
591
    mxf_write_local_tag(pb, 16, 0x3004);
592
    put_buffer(pb, multiple_desc_ul, 16);
593

    
594
    // write sub descriptor refs
595
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
596
    mxf_write_refs_count(pb, s->nb_streams);
597
    for (i = 0; i < s->nb_streams; i++)
598
        mxf_write_uuid(pb, SubDescriptor, i);
599
}
600

    
601
static void mxf_write_generic_desc(ByteIOContext *pb, AVStream *st, const UID key, unsigned size)
602
{
603
    MXFStreamContext *sc = st->priv_data;
604

    
605
    put_buffer(pb, key, 16);
606
    klv_encode_ber_length(pb, size);
607

    
608
    mxf_write_local_tag(pb, 16, 0x3C0A);
609
    mxf_write_uuid(pb, SubDescriptor, st->index);
610

    
611
    mxf_write_local_tag(pb, 4, 0x3006);
612
    put_be32(pb, st->index);
613

    
614
    mxf_write_local_tag(pb, 8, 0x3001);
615
    put_be32(pb, st->time_base.den);
616
    put_be32(pb, st->time_base.num);
617

    
618
    mxf_write_local_tag(pb, 16, 0x3004);
619
    put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
620
}
621

    
622
static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
623
static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
624
static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
625

    
626
static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
627
{
628
    MXFStreamContext *sc = st->priv_data;
629
    ByteIOContext *pb = s->pb;
630
    int stored_height = (st->codec->height+15)/16*16;
631
    AVRational dar;
632
    int f1, f2;
633

    
634
    mxf_write_generic_desc(pb, st, mxf_mpegvideo_descriptor_key, 153+sc->interlaced*4);
635

    
636
    mxf_write_local_tag(pb, 4, 0x3203);
637
    put_be32(pb, st->codec->width);
638

    
639
    mxf_write_local_tag(pb, 4, 0x3202);
640
    put_be32(pb, stored_height>>sc->interlaced);
641

    
642
    mxf_write_local_tag(pb, 4, 0x3209);
643
    put_be32(pb, st->codec->width);
644

    
645
    mxf_write_local_tag(pb, 4, 0x3208);
646
    put_be32(pb, st->codec->height>>sc->interlaced);
647

    
648
    // bit rate
649
    mxf_write_local_tag(pb, 4, 0x8000);
650
    put_be32(pb, st->codec->bit_rate);
651

    
652
    // frame layout
653
    mxf_write_local_tag(pb, 1, 0x320C);
654
    put_byte(pb, sc->interlaced);
655

    
656
    // video line map
657
    switch (st->codec->height) {
658
    case  576: f1 = 23; f2 = 336; break;
659
    case  608: f1 =  7; f2 = 320; break;
660
    case  480: f1 = 20; f2 = 283; break;
661
    case  512: f1 =  7; f2 = 270; break;
662
    case  720: f1 = 26; f2 =   0; break; // progressive
663
    case 1080: f1 = 21; f2 = 584; break;
664
    default:   f1 =  0; f2 =   0; break;
665
    }
666

    
667
    if (!sc->interlaced) {
668
        f2  = 0;
669
        f1 *= 2;
670
    }
671

    
672
    mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
673
    put_be32(pb, sc->interlaced ? 2 : 1);
674
    put_be32(pb, 4);
675
    put_be32(pb, f1);
676
    if (sc->interlaced)
677
        put_be32(pb, f2);
678

    
679
    av_reduce(&dar.num, &dar.den,
680
              st->codec->width*st->codec->sample_aspect_ratio.num,
681
              st->codec->height*st->codec->sample_aspect_ratio.den,
682
              1024*1024);
683

    
684
    mxf_write_local_tag(pb, 8, 0x320E);
685
    put_be32(pb, dar.num);
686
    put_be32(pb, dar.den);
687

    
688
    mxf_write_local_tag(pb, 16, 0x3201);
689
    put_buffer(pb, *sc->codec_ul, 16);
690
}
691

    
692
static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
693
{
694
    ByteIOContext *pb = s->pb;
695

    
696
    mxf_write_generic_desc(pb, st, key, size);
697

    
698
    // audio locked
699
    mxf_write_local_tag(pb, 1, 0x3D02);
700
    put_byte(pb, 1);
701

    
702
    // write audio sampling rate
703
    mxf_write_local_tag(pb, 8, 0x3D03);
704
    put_be32(pb, st->codec->sample_rate);
705
    put_be32(pb, 1);
706

    
707
    mxf_write_local_tag(pb, 4, 0x3D07);
708
    put_be32(pb, st->codec->channels);
709

    
710
    mxf_write_local_tag(pb, 4, 0x3D01);
711
    put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
712
}
713

    
714
static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
715
{
716
    ByteIOContext *pb = s->pb;
717

    
718
    mxf_write_generic_sound_desc(s, st, key, size);
719

    
720
    mxf_write_local_tag(pb, 2, 0x3D0A);
721
    put_be16(pb, st->codec->block_align);
722

    
723
    // avg bytes per sec
724
    mxf_write_local_tag(pb, 4, 0x3D09);
725
    put_be32(pb, st->codec->block_align*st->codec->sample_rate);
726
}
727

    
728
static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
729
{
730
    mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
731
}
732

    
733
static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
734
{
735
    mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
736
}
737

    
738
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
739
{
740
    ByteIOContext *pb = s->pb;
741
    int i;
742

    
743
    if (type == MaterialPackage) {
744
        mxf_write_metadata_key(pb, 0x013600);
745
        PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
746
        klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
747
    } else {
748
        mxf_write_metadata_key(pb, 0x013700);
749
        PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
750
        klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
751
    }
752

    
753
    // write uid
754
    mxf_write_local_tag(pb, 16, 0x3C0A);
755
    mxf_write_uuid(pb, type, 0);
756
    av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
757
    PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
758

    
759
    // write package umid
760
    mxf_write_local_tag(pb, 32, 0x4401);
761
    mxf_write_umid(pb, type, 0);
762
    PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
763

    
764
    // write create date
765
    mxf_write_local_tag(pb, 8, 0x4405);
766
    put_be64(pb, 0);
767

    
768
    // write modified date
769
    mxf_write_local_tag(pb, 8, 0x4404);
770
    put_be64(pb, 0);
771

    
772
    // write track refs
773
    mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
774
    mxf_write_refs_count(pb, s->nb_streams);
775
    for (i = 0; i < s->nb_streams; i++)
776
        mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
777

    
778
    // write multiple descriptor reference
779
    if (type == SourcePackage) {
780
        mxf_write_local_tag(pb, 16, 0x4701);
781
        if (s->nb_streams > 1) {
782
            mxf_write_uuid(pb, MultipleDescriptor, 0);
783
            mxf_write_multi_descriptor(s);
784
        } else
785
            mxf_write_uuid(pb, SubDescriptor, 0);
786
    }
787

    
788
    for (i = 0; i < s->nb_streams; i++) {
789
        AVStream *st = s->streams[i];
790
        mxf_write_track(s, st, type);
791
        mxf_write_sequence(s, st, type);
792
        mxf_write_structural_component(s, st, type);
793

    
794
        if (type == SourcePackage) {
795
            MXFStreamContext *sc = st->priv_data;
796
            mxf_essence_container_uls[sc->index].write_desc(s, st);
797
        }
798
    }
799
}
800

    
801
static int mxf_write_essence_container_data(AVFormatContext *s)
802
{
803
    ByteIOContext *pb = s->pb;
804

    
805
    mxf_write_metadata_key(pb, 0x012300);
806
    klv_encode_ber_length(pb, 72);
807

    
808
    mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
809
    mxf_write_uuid(pb, EssenceContainerData, 0);
810

    
811
    mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
812
    mxf_write_umid(pb, SourcePackage, 0);
813

    
814
    mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
815
    put_be32(pb, 1);
816

    
817
    mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
818
    put_be32(pb, 2);
819

    
820
    return 0;
821
}
822

    
823
static int mxf_write_header_metadata_sets(AVFormatContext *s)
824
{
825
    mxf_write_preface(s);
826
    mxf_write_identification(s);
827
    mxf_write_content_storage(s);
828
    mxf_write_package(s, MaterialPackage);
829
    mxf_write_package(s, SourcePackage);
830
    mxf_write_essence_container_data(s);
831
    return 0;
832
}
833

    
834
static int mxf_write_index_table_segment(AVFormatContext *s)
835
{
836
    MXFContext *mxf = s->priv_data;
837
    ByteIOContext *pb = s->pb;
838
    int i, j, k, ret, key_offset = 0;
839
    int temporal_reordering = 0;
840

    
841
    av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
842

    
843
    put_buffer(pb, index_table_segment_key, 16);
844
    ret = klv_encode_ber_length(pb, 109 + s->nb_streams*6 +
845
                                mxf->edit_units_count*(11+(s->nb_streams-1)*4));
846

    
847
    // instance id
848
    mxf_write_local_tag(pb, 16, 0x3C0A);
849
    mxf_write_uuid(pb, IndexTableSegment, 0);
850

    
851
    // index edit rate
852
    mxf_write_local_tag(pb, 8, 0x3F0B);
853
    put_be32(pb, mxf->time_base.num);
854
    put_be32(pb, mxf->time_base.den);
855

    
856
    // index start position
857
    mxf_write_local_tag(pb, 8, 0x3F0C);
858
    put_be64(pb, 0);
859

    
860
    // index duration
861
    mxf_write_local_tag(pb, 8, 0x3F0D);
862
    put_be64(pb, mxf->edit_units_count);
863

    
864
    // edit unit byte count
865
    mxf_write_local_tag(pb, 4, 0x3F05);
866
    put_be32(pb, 0);
867

    
868
    // index sid
869
    mxf_write_local_tag(pb, 4, 0x3F06);
870
    put_be32(pb, 2);
871

    
872
    // body sid
873
    mxf_write_local_tag(pb, 4, 0x3F07);
874
    put_be32(pb, 1);
875

    
876
    // slice count - 1
877
    mxf_write_local_tag(pb, 1, 0x3F08);
878
    put_byte(pb, s->nb_streams-1);
879

    
880
    // delta entry array
881
    mxf_write_local_tag(pb, 8 + s->nb_streams*6, 0x3F09);
882
    put_be32(pb, s->nb_streams); // num of entries
883
    put_be32(pb, 6);             // size of one entry
884
    for (i = 0; i < s->nb_streams; i++) {
885
        AVStream *st = s->streams[i];
886
        MXFStreamContext *sc = st->priv_data;
887
        put_byte(pb, sc->temporal_reordering);
888
        if (sc->temporal_reordering)
889
            temporal_reordering = 1;
890
        put_byte(pb, i);
891
        put_be32(pb, 0); // element delta
892
    }
893

    
894
    mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+(s->nb_streams-1)*4), 0x3F0A);
895
    put_be32(pb, mxf->edit_units_count);  // num of entries
896
    put_be32(pb, 11+(s->nb_streams-1)*4); // size of one entry
897
    for (i = 0; i < mxf->edit_units_count; i++) {
898
        if (mxf->index_entries[i].flags & 0x40)
899
            key_offset = 0;
900
        if (temporal_reordering) {
901
            int temporal_offset = 0;
902
            for (j = i+1; j < mxf->edit_units_count; j++) {
903
                temporal_offset++;
904
                if (mxf->index_entries[j].flags & 0x10) { // backward prediction
905
                    // next is not b, so is reordered
906
                    if (!(mxf->index_entries[i+1].flags & 0x10)) {
907
                        if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
908
                            temporal_offset = 0;
909
                        else
910
                            temporal_offset = -temporal_offset;
911
                    }
912
                    break;
913
                }
914
            }
915
            put_byte(pb, temporal_offset);
916
        } else
917
            put_byte(pb, 0);
918
        put_byte(pb, key_offset);
919
        put_byte(pb, mxf->index_entries[i].flags);
920
        // stream offset
921
        put_be64(pb, mxf->index_entries[i].offset - mxf->index_entries[0].offset);
922
        for (k = 0; k < s->nb_streams; k++) {
923
            if (mxf->index_entries[i].slice_offset[k])
924
                put_be32(pb, mxf->index_entries[i].slice_offset[k]);
925
        }
926
        key_offset--;
927
    }
928

    
929
    return ret;
930
}
931

    
932
static void mxf_write_partition(AVFormatContext *s, int bodysid,
933
                                int indexsid, unsigned index_byte_count,
934
                                const uint8_t *key, int write_metadata)
935
{
936
    MXFContext *mxf = s->priv_data;
937
    ByteIOContext *pb = s->pb;
938
    int64_t header_byte_count_offset;
939

    
940
    // write klv
941
    put_buffer(pb, key, 16);
942

    
943
    klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
944

    
945
    // write partition value
946
    put_be16(pb, 1); // majorVersion
947
    put_be16(pb, 2); // minorVersion
948
    put_be32(pb, 1); // kagSize
949

    
950
    put_be64(pb, url_ftell(pb) - 25); // thisPartition
951
    put_be64(pb, 0); // previousPartition
952

    
953
    put_be64(pb, mxf->footer_partition_offset); // footerPartition
954

    
955
    // set offset
956
    header_byte_count_offset = url_ftell(pb);
957
    put_be64(pb, 0); // headerByteCount, update later
958

    
959
    // indexTable
960
    put_be64(pb, index_byte_count); // indexByteCount
961
    put_be32(pb, indexsid); // indexSID
962
    put_be64(pb, 0); // bodyOffset
963

    
964
    put_be32(pb, bodysid); // bodySID
965
    put_buffer(pb, op1a_ul, 16); // operational pattern
966

    
967
    // essence container
968
    mxf_write_essence_container_refs(s);
969

    
970
    if (write_metadata) {
971
        // mark the start of the headermetadata and calculate metadata size
972
        int64_t pos, start = url_ftell(s->pb);
973
        mxf_write_primer_pack(s);
974
        mxf_write_header_metadata_sets(s);
975
        pos = url_ftell(s->pb);
976
        // update header_byte_count
977
        url_fseek(pb, header_byte_count_offset, SEEK_SET);
978
        put_be64(pb, pos - start);
979
        url_fseek(pb, pos, SEEK_SET);
980
    }
981

    
982
    put_flush_packet(pb);
983
}
984

    
985
static const UID mxf_mpeg2_codec_uls[] = {
986
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
987
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
988
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
989
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
990
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
991
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
992
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
993
    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
994
};
995

    
996
static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
997
{
998
    if (avctx->profile == 4) { // Main
999
        if (avctx->level == 8) // Main
1000
            return avctx->gop_size ?
1001
                &mxf_mpeg2_codec_uls[1] :
1002
                &mxf_mpeg2_codec_uls[0];
1003
        else if (avctx->level == 4) // High
1004
            return avctx->gop_size ?
1005
                &mxf_mpeg2_codec_uls[5] :
1006
                &mxf_mpeg2_codec_uls[4];
1007
    } else if (avctx->profile == 0) { // 422
1008
        if (avctx->level == 5) // Main
1009
            return avctx->gop_size ?
1010
                &mxf_mpeg2_codec_uls[3] :
1011
                &mxf_mpeg2_codec_uls[2];
1012
        else if (avctx->level == 2) // High
1013
            return avctx->gop_size ?
1014
                &mxf_mpeg2_codec_uls[7] :
1015
                &mxf_mpeg2_codec_uls[6];
1016
    }
1017
    return NULL;
1018
}
1019

    
1020
static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1021
{
1022
    MXFContext *mxf = s->priv_data;
1023
    MXFStreamContext *sc = st->priv_data;
1024
    uint32_t c = -1;
1025
    int i;
1026

    
1027
    mxf->index_entries[mxf->edit_units_count].flags = 0;
1028

    
1029
    for(i = 0; i < pkt->size - 4; i++) {
1030
        c = (c<<8) + pkt->data[i];
1031
        if (c == 0x1B5) {
1032
            if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1033
                st->codec->profile = pkt->data[i+1] & 0x07;
1034
                st->codec->level   = pkt->data[i+2] >> 4;
1035
            } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1036
                sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1037
                break;
1038
            }
1039
        } else if (c == 0x1b8) { // gop
1040
            if (i + 4 < pkt->size && pkt->data[i+4]>>6 & 0x01) // closed
1041
                mxf->index_entries[mxf->edit_units_count].flags |= 0x80; // random access
1042
        } else if (c == 0x1b3) { // seq
1043
            mxf->index_entries[mxf->edit_units_count].flags |= 0x40;
1044
        } else if (c == 0x100) { // pic
1045
            int pict_type = (pkt->data[i+2]>>3) & 0x07;
1046
            if (pict_type == 2) { // P frame
1047
                mxf->index_entries[mxf->edit_units_count].flags |= 0x22;
1048
                st->codec->gop_size = 1;
1049
            } else if (pict_type == 3) { // B frame
1050
                mxf->index_entries[mxf->edit_units_count].flags |= 0x33;
1051
                sc->temporal_reordering = -1;
1052
            } else if (!pict_type) {
1053
                av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1054
                return 0;
1055
            }
1056
        }
1057
    }
1058
    sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1059
    return !!sc->codec_ul;
1060
}
1061

    
1062
static int ff_audio_interleave_init(AVFormatContext *s, const int *samples_per_frame)
1063
{
1064
    int i;
1065

    
1066
    if (!samples_per_frame)
1067
        return -1;
1068

    
1069
    for (i = 0; i < s->nb_streams; i++) {
1070
        AVStream *st = s->streams[i];
1071
        AudioInterleaveContext *aic = st->priv_data;
1072

    
1073
        if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1074
            aic->sample_size = (st->codec->channels *
1075
                                av_get_bits_per_sample(st->codec->codec_id)) / 8;
1076
            if (!aic->sample_size) {
1077
                av_log(s, AV_LOG_ERROR, "could not compute sample size\n");
1078
                return -1;
1079
            }
1080
            aic->samples_per_frame = samples_per_frame;
1081
            aic->samples = aic->samples_per_frame;
1082

    
1083
            av_fifo_init(&aic->fifo, 100 * *aic->samples);
1084
        }
1085
    }
1086

    
1087
    return 0;
1088
}
1089

    
1090
static void ff_audio_interleave_close(AVFormatContext *s)
1091
{
1092
    int i;
1093
    for (i = 0; i < s->nb_streams; i++) {
1094
        AVStream *st = s->streams[i];
1095
        AudioInterleaveContext *aic = st->priv_data;
1096

    
1097
        if (st->codec->codec_type == CODEC_TYPE_AUDIO)
1098
            av_fifo_free(&aic->fifo);
1099
    }
1100
}
1101

    
1102
static int mxf_write_header(AVFormatContext *s)
1103
{
1104
    MXFContext *mxf = s->priv_data;
1105
    int i;
1106
    uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1107
    const int *samples_per_frame = NULL;
1108

    
1109
    if (s->nb_streams > 17) {
1110
        av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
1111
        return -1;
1112
    }
1113

    
1114
    for (i = 0; i < s->nb_streams; i++) {
1115
        AVStream *st = s->streams[i];
1116
        MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1117
        if (!sc)
1118
            return AVERROR(ENOMEM);
1119
        st->priv_data = sc;
1120

    
1121
        if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1122
            if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1123
                samples_per_frame = PAL_samples_per_frame;
1124
                mxf->time_base = (AVRational){ 1, 25 };
1125
            } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1126
                samples_per_frame = NTSC_samples_per_frame;
1127
                mxf->time_base = (AVRational){ 1001, 30000 };
1128
            } else {
1129
                av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1130
                return -1;
1131
            }
1132
            mxf->edit_unit_start = st->index;
1133
        } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1134
            if (st->codec->sample_rate != 48000) {
1135
                av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1136
                return -1;
1137
            }
1138
        }
1139
        sc->duration = -1;
1140

    
1141
        sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1142
        if (sc->index == -1) {
1143
            av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1144
                   "codec not currently supported in container\n", i);
1145
            return -1;
1146
        }
1147

    
1148
        sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1149

    
1150
        if (!present[sc->index]) {
1151
            mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
1152
            present[sc->index] = 1;
1153
        } else
1154
            present[sc->index]++;
1155
        memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1156
        sc->track_essence_element_key[15] = present[sc->index];
1157
        PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1158
    }
1159

    
1160
    for (i = 0; i < s->nb_streams; i++) {
1161
        MXFStreamContext *sc = s->streams[i]->priv_data;
1162
        av_set_pts_info(s->streams[i], 64, mxf->time_base.num, mxf->time_base.den);
1163
        // update element count
1164
        sc->track_essence_element_key[13] = present[sc->index];
1165
        sc->order = AV_RB32(sc->track_essence_element_key+12);
1166
    }
1167

    
1168
    if (!samples_per_frame)
1169
        samples_per_frame = PAL_samples_per_frame;
1170

    
1171
    if (ff_audio_interleave_init(s, samples_per_frame) < 0)
1172
        return -1;
1173

    
1174
    return 0;
1175
}
1176

    
1177
static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1178
{
1179
    MXFContext *mxf = s->priv_data;
1180
    ByteIOContext *pb = s->pb;
1181
    AVStream *st = s->streams[pkt->stream_index];
1182
    MXFStreamContext *sc = st->priv_data;
1183

    
1184
    if (!(mxf->edit_units_count % MXF_INDEX_CLUSTER_SIZE)) {
1185
        mxf->index_entries = av_realloc(mxf->index_entries,
1186
            (mxf->edit_units_count + MXF_INDEX_CLUSTER_SIZE)*
1187
             sizeof(*mxf->index_entries));
1188
        if (!mxf->index_entries) {
1189
            av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1190
            return -1;
1191
        }
1192
    }
1193

    
1194
    if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1195
        if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
1196
            av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1197
            return -1;
1198
        }
1199
    }
1200

    
1201
    if (!mxf->header_written) {
1202
        mxf_write_partition(s, 1, 0, 0, header_open_partition_key, 1);
1203
        mxf->header_written = 1;
1204
    }
1205

    
1206
    if (st->index == mxf->edit_unit_start) {
1207
        mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
1208
        mxf->index_entries[mxf->edit_units_count].slice_offset[st->index] = 0;
1209
        mxf->edit_units_count++;
1210
    } else {
1211
        mxf->index_entries[mxf->edit_units_count-1].slice_offset[st->index] =
1212
            url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
1213
    }
1214

    
1215
    put_buffer(pb, sc->track_essence_element_key, 16); // write key
1216
    klv_encode_ber_length(pb, pkt->size); // write length
1217
    put_buffer(pb, pkt->data, pkt->size); // write value
1218

    
1219
    sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
1220

    
1221
    put_flush_packet(pb);
1222
    return 0;
1223
}
1224

    
1225
static void mxf_write_random_index_pack(AVFormatContext *s)
1226
{
1227
    MXFContext *mxf = s->priv_data;
1228
    ByteIOContext *pb = s->pb;
1229
    uint64_t pos = url_ftell(pb);
1230

    
1231
    put_buffer(pb, random_index_pack_key, 16);
1232
    klv_encode_ber_length(pb, 28);
1233

    
1234
    put_be32(pb, 1); // BodySID of header partition
1235
    put_be64(pb, 0); // offset of header partition
1236

    
1237
    put_be32(pb, 0); // BodySID of footer partition
1238
    put_be64(pb, mxf->footer_partition_offset);
1239

    
1240
    put_be32(pb, url_ftell(pb) - pos + 4);
1241
}
1242

    
1243
static int mxf_write_footer(AVFormatContext *s)
1244
{
1245
    MXFContext *mxf = s->priv_data;
1246
    ByteIOContext *pb = s->pb;
1247
    unsigned index_byte_count =
1248
        109 + s->nb_streams*6 +
1249
        mxf->edit_units_count*(11+(s->nb_streams-1)*4);
1250

    
1251
    // add encoded ber length
1252
    index_byte_count += 16 +
1253
        (index_byte_count < 128 ? 1 : (av_log2(index_byte_count) >> 3) + 2);
1254

    
1255
    mxf->footer_partition_offset = url_ftell(pb);
1256
    mxf_write_partition(s, 0, 2, index_byte_count, footer_partition_key, 0);
1257

    
1258
    mxf_write_index_table_segment(s);
1259

    
1260
    mxf_write_random_index_pack(s);
1261

    
1262
    if (!url_is_streamed(s->pb)) {
1263
        url_fseek(pb, 0, SEEK_SET);
1264
        mxf_write_partition(s, 1, 0, 0, header_closed_partition_key, 1);
1265
    }
1266

    
1267
    ff_audio_interleave_close(s);
1268

    
1269
    mxf_free(s);
1270
    return 0;
1271
}
1272

    
1273
static int mxf_interleave_new_audio_packet(AVFormatContext *s, AVPacket *pkt,
1274
                                           int stream_index, int flush)
1275
{
1276
    AVStream *st = s->streams[stream_index];
1277
    AudioInterleaveContext *aic = st->priv_data;
1278

    
1279
    int size = FFMIN(av_fifo_size(&aic->fifo), *aic->samples * aic->sample_size);
1280
    if (!size || (!flush && size == av_fifo_size(&aic->fifo)))
1281
        return 0;
1282

    
1283
    av_new_packet(pkt, size);
1284
    av_fifo_read(&aic->fifo, pkt->data, size);
1285

    
1286
    pkt->dts = pkt->pts = aic->dts;
1287
    pkt->duration = av_rescale_q(*aic->samples,
1288
                                 (AVRational){ 1, st->codec->sample_rate },
1289
                                 st->time_base);
1290
    pkt->stream_index = stream_index;
1291
    aic->dts += pkt->duration;
1292

    
1293
    aic->samples++;
1294
    if (!*aic->samples)
1295
        aic->samples = aic->samples_per_frame;
1296

    
1297
    return size;
1298
}
1299

    
1300
static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1301
{
1302
    AVPacketList *pktl;
1303
    int stream_count = 0;
1304
    int streams[MAX_STREAMS];
1305

    
1306
    memset(streams, 0, sizeof(streams));
1307
    pktl = s->packet_buffer;
1308
    while (pktl) {
1309
        //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1310
        if (!streams[pktl->pkt.stream_index])
1311
            stream_count++;
1312
        streams[pktl->pkt.stream_index]++;
1313
        pktl = pktl->next;
1314
    }
1315

    
1316
    if (stream_count && (s->nb_streams == stream_count || flush)) {
1317
        pktl = s->packet_buffer;
1318
        if (s->nb_streams != stream_count) {
1319
            MXFContext *mxf = s->priv_data;
1320
            AVPacketList *first = NULL;
1321
            // find first packet in edit unit
1322
            while (pktl) {
1323
                AVStream *st = s->streams[pktl->pkt.stream_index];
1324
                if (st->index == mxf->edit_unit_start)
1325
                    break;
1326
                else if (!first)
1327
                    first = pktl;
1328
                pktl = pktl->next;
1329
            }
1330
            // purge packet queue
1331
            while (pktl) {
1332
                AVPacketList *next = pktl->next;
1333
                av_free_packet(&pktl->pkt);
1334
                av_freep(&pktl);
1335
                pktl = next;
1336
            }
1337
            if (!first)
1338
                goto out;
1339
            pktl = first;
1340
        }
1341

    
1342
        *out = pktl->pkt;
1343
        //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1344
        s->packet_buffer = pktl->next;
1345
        av_freep(&pktl);
1346
        return 1;
1347
    } else {
1348
    out:
1349
        av_init_packet(out);
1350
        return 0;
1351
    }
1352
}
1353

    
1354
static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1355
{
1356
    AVStream *st  = s->streams[pkt ->stream_index];
1357
    AVStream *st2 = s->streams[next->stream_index];
1358
    MXFStreamContext *sc  = st ->priv_data;
1359
    MXFStreamContext *sc2 = st2->priv_data;
1360

    
1361
    int64_t left  = st2->time_base.num * (int64_t)st ->time_base.den;
1362
    int64_t right = st ->time_base.num * (int64_t)st2->time_base.den;
1363

    
1364
    return next->dts * left > pkt->dts * right || // FIXME this can overflow
1365
        (next->dts * left == pkt->dts * right && sc->order < sc2->order);
1366
}
1367

    
1368
static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1369
{
1370
    int i;
1371

    
1372
    if (pkt) {
1373
        AVStream *st = s->streams[pkt->stream_index];
1374
        AudioInterleaveContext *aic = st->priv_data;
1375
        if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1376
            av_fifo_generic_write(&aic->fifo, pkt->data, pkt->size, NULL);
1377
        } else {
1378
            // rewrite pts and dts to be decoded time line position
1379
            pkt->pts = pkt->dts = aic->dts;
1380
            aic->dts += pkt->duration;
1381
            ff_interleave_add_packet(s, pkt, mxf_compare_timestamps);
1382
        }
1383
        pkt = NULL;
1384
    }
1385

    
1386
    for (i = 0; i < s->nb_streams; i++) {
1387
        AVStream *st = s->streams[i];
1388
        if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1389
            AVPacket new_pkt;
1390
            while (mxf_interleave_new_audio_packet(s, &new_pkt, i, flush))
1391
                ff_interleave_add_packet(s, &new_pkt, mxf_compare_timestamps);
1392
        }
1393
    }
1394

    
1395
    return mxf_interleave_get_packet(s, out, pkt, flush);
1396
}
1397

    
1398
AVOutputFormat mxf_muxer = {
1399
    "mxf",
1400
    NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1401
    NULL,
1402
    "mxf",
1403
    sizeof(MXFContext),
1404
    CODEC_ID_PCM_S16LE,
1405
    CODEC_ID_MPEG2VIDEO,
1406
    mxf_write_header,
1407
    mxf_write_packet,
1408
    mxf_write_footer,
1409
    AVFMT_NOTIMESTAMPS,
1410
    NULL,
1411
    mxf_interleave,
1412
};