831 lines
30 KiB
C
831 lines
30 KiB
C
/*
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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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*
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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 "mxf.h"
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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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UID track_essence_element_key;
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const UID *essence_container_ul;
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} MXFStreamContext;
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typedef struct MXFContext {
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int64_t header_byte_count;
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int64_t header_byte_count_offset;
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int64_t header_footer_partition_offset;
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int essence_container_count;
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uint8_t essence_containers_indices[sizeof(ff_mxf_essence_container_uls)/
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sizeof(*ff_mxf_essence_container_uls)];
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} MXFContext;
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typedef struct {
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const UID key;
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void (*write)();
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enum CodecType type;
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} MXFDescriptorWriteTableEntry;
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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,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x0F,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 header_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete
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static const uint8_t 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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/**
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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 MXFCodecUL mxf_essence_element_key[] = {
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{ { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, 14, CODEC_ID_MPEG2VIDEO},
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{ { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 }, 14, CODEC_ID_PCM_S16LE},
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{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, CODEC_ID_NONE},
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};
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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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// 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 */
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{ 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 */
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{ 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
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{ 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
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{ 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 */
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{ 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x03,0x00,0x00}}, /* Track Number */
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{ 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
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{ 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
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{ 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
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// 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 */
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{ 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
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{ 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
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// Source Clip
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{ 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Start position */
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{ 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
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{ 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
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// File Descriptor
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{ 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
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{ 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
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{ 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
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{ 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
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// Generic Picture Essence Descriptor
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{ 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
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{ 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
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{ 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
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{ 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
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// Generic Sound Essence Descriptor
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{ 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
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{ 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
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{ 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
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{ 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
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};
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static void mxf_write_uuid(ByteIOContext *pb, enum CodecID type, int value)
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{
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put_buffer(pb, uuid_base, 12);
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put_be16(pb, type);
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put_be16(pb, value);
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}
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static void mxf_write_umid(ByteIOContext *pb, enum CodecID type, int value)
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{
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put_buffer(pb, umid_base, 16);
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mxf_write_uuid(pb, type, value);
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}
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static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
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{
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put_be32(pb, ref_count);
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put_be32(pb, 16);
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}
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static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
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{
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// Determine the best BER size
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int size;
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if (len < 128) {
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//short form
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put_byte(pb, len);
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return 1;
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}
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size = (av_log2(len) >> 3) + 1;
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// long form
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put_byte(pb, 0x80 + size);
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while(size) {
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size --;
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put_byte(pb, len >> 8 * size & 0xff);
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}
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return 0;
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}
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/*
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* Get essence container ul and return its index position
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*/
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static const UID *mxf_get_essence_container_ul(enum CodecID type, int *index)
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{
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const MXFCodecUL *uls = ff_mxf_essence_container_uls;
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for (*index = 0; *index < sizeof(ff_mxf_essence_container_uls)/sizeof(*ff_mxf_essence_container_uls); (*index)++)
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if (ff_mxf_essence_container_uls[*index].id == type)
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return &uls->uid;
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*index = -1;
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return NULL;
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}
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static void mxf_write_primer_pack(AVFormatContext *s)
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{
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ByteIOContext *pb = s->pb;
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int local_tag_number, i = 0;
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local_tag_number = sizeof(mxf_local_tag_batch) / sizeof(MXFLocalTagPair);
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put_buffer(pb, primer_pack_key, 16);
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klv_encode_ber_length(pb, local_tag_number * 18 + 8);
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put_be32(pb, local_tag_number); // local_tag num
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put_be32(pb, 18); // item size, always 18 according to the specs
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for (i = 0; i < local_tag_number; i++) {
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put_be16(pb, mxf_local_tag_batch[i].local_tag);
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put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
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}
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}
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static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
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{
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put_be16(pb, tag);
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put_be16(pb, size);
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}
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static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
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{
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put_buffer(pb, header_metadata_key, 13);
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put_be24(pb, value);
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}
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static void mxf_free(AVFormatContext *s)
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{
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int i;
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for (i = 0; i < s->nb_streams; i++) {
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AVStream *st = s->streams[i];
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av_freep(&st->priv_data);
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}
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}
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static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
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{
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const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
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while (uls->type != CODEC_TYPE_DATA) {
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if (type == uls->type)
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break;
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uls++;
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}
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return uls;
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}
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static void mxf_write_essence_container_refs(AVFormatContext *s)
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{
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MXFContext *c = s->priv_data;
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ByteIOContext *pb = s->pb;
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int i;
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mxf_write_refs_count(pb, c->essence_container_count);
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av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
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for (i = 0; i < c->essence_container_count; i++) {
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put_buffer(pb, ff_mxf_essence_container_uls[c->essence_containers_indices[i]].uid, 16);
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PRINT_KEY(s, "essence container ul:\n", ff_mxf_essence_container_uls[c->essence_containers_indices[i]].uid);
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}
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}
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static void mxf_write_preface(AVFormatContext *s)
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{
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MXFContext *mxf = s->priv_data;
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ByteIOContext *pb = s->pb;
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|
|
mxf_write_metadata_key(pb, 0x012f00);
|
|
PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
|
|
klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
|
|
|
|
// write preface set uid
|
|
mxf_write_local_tag(pb, 16, 0x3C0A);
|
|
mxf_write_uuid(pb, Preface, 0);
|
|
PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
|
|
|
|
// write create date as unknown
|
|
mxf_write_local_tag(pb, 8, 0x3B02);
|
|
put_be64(pb, 0);
|
|
|
|
// write version
|
|
mxf_write_local_tag(pb, 2, 0x3B05);
|
|
put_be16(pb, 1);
|
|
|
|
// write identification_refs
|
|
mxf_write_local_tag(pb, 16 + 8, 0x3B06);
|
|
mxf_write_refs_count(pb, 1);
|
|
mxf_write_uuid(pb, Identification, 0);
|
|
|
|
// write content_storage_refs
|
|
mxf_write_local_tag(pb, 16, 0x3B03);
|
|
mxf_write_uuid(pb, ContentStorage, 0);
|
|
|
|
mxf_write_local_tag(pb, 16, 0x3B09);
|
|
put_buffer(pb, op1a_ul, 16);
|
|
|
|
// write essence_container_refs
|
|
mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
|
|
mxf_write_essence_container_refs(s);
|
|
|
|
// write dm_scheme_refs
|
|
mxf_write_local_tag(pb, 8, 0x3B0B);
|
|
put_be64(pb, 0);
|
|
}
|
|
|
|
/*
|
|
* Write a local tag containing an ascii string as utf-16
|
|
*/
|
|
static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
|
|
{
|
|
int i, size = strlen(value);
|
|
mxf_write_local_tag(pb, size*2, tag);
|
|
for (i = 0; i < size; i++)
|
|
put_be16(pb, value[i]);
|
|
}
|
|
|
|
static void mxf_write_identification(AVFormatContext *s)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
const char *company = "FFmpeg";
|
|
const char *product = "OP1a Muxer";
|
|
const char *version;
|
|
int length;
|
|
|
|
mxf_write_metadata_key(pb, 0x013000);
|
|
PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
|
|
|
|
version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
|
|
"0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
|
|
length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
|
|
klv_encode_ber_length(pb, length);
|
|
|
|
// write uid
|
|
mxf_write_local_tag(pb, 16, 0x3C0A);
|
|
mxf_write_uuid(pb, Identification, 0);
|
|
PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
|
|
|
|
// write generation uid
|
|
mxf_write_local_tag(pb, 16, 0x3C09);
|
|
mxf_write_uuid(pb, Identification, 1);
|
|
|
|
mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
|
|
mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
|
|
mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
|
|
|
|
// write product uid
|
|
mxf_write_local_tag(pb, 16, 0x3C05);
|
|
mxf_write_uuid(pb, Identification, 2);
|
|
|
|
// write modified date
|
|
mxf_write_local_tag(pb, 8, 0x3C06);
|
|
put_be64(pb, 0);
|
|
}
|
|
|
|
static void mxf_write_content_storage(AVFormatContext *s)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
|
|
mxf_write_metadata_key(pb, 0x011800);
|
|
PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
|
|
klv_encode_ber_length(pb, 64);
|
|
|
|
// write uid
|
|
mxf_write_local_tag(pb, 16, 0x3C0A);
|
|
mxf_write_uuid(pb, ContentStorage, 0);
|
|
PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
|
|
|
|
// write package reference
|
|
mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
|
|
mxf_write_refs_count(pb, 2);
|
|
mxf_write_uuid(pb, MaterialPackage, 0);
|
|
mxf_write_uuid(pb, SourcePackage, 0);
|
|
}
|
|
|
|
static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
int i;
|
|
|
|
if (type == MaterialPackage) {
|
|
mxf_write_metadata_key(pb, 0x013600);
|
|
PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
|
|
klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
|
|
} else {
|
|
mxf_write_metadata_key(pb, 0x013700);
|
|
PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
|
|
klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
|
|
}
|
|
|
|
// write uid
|
|
mxf_write_local_tag(pb, 16, 0x3C0A);
|
|
mxf_write_uuid(pb, type, 0);
|
|
av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
|
|
PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
|
|
|
|
// write package umid
|
|
mxf_write_local_tag(pb, 32, 0x4401);
|
|
mxf_write_umid(pb, type, 0);
|
|
PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
|
|
|
|
// write create date
|
|
mxf_write_local_tag(pb, 8, 0x4405);
|
|
put_be64(pb, 0);
|
|
|
|
// write modified date
|
|
mxf_write_local_tag(pb, 8, 0x4404);
|
|
put_be64(pb, 0);
|
|
|
|
// write track refs
|
|
mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
|
|
mxf_write_refs_count(pb, s->nb_streams);
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
|
|
|
|
// write multiple descriptor reference
|
|
if (type == SourcePackage) {
|
|
mxf_write_local_tag(pb, 16, 0x4701);
|
|
mxf_write_uuid(pb, MultipleDescriptor, 0);
|
|
}
|
|
}
|
|
|
|
static void mxf_write_track(AVFormatContext *s, int stream_index, enum MXFMetadataSetType type, int *track_number_sign)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
AVStream *st = s->streams[stream_index];
|
|
MXFStreamContext *sc = st->priv_data;
|
|
const MXFCodecUL *element;
|
|
int i = 0;
|
|
|
|
mxf_write_metadata_key(pb, 0x013b00);
|
|
PRINT_KEY(s, "track key", pb->buf_ptr - 16);
|
|
klv_encode_ber_length(pb, 80);
|
|
|
|
// write track uid
|
|
mxf_write_local_tag(pb, 16, 0x3C0A);
|
|
mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, stream_index);
|
|
PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
|
|
|
|
// write track id
|
|
mxf_write_local_tag(pb, 4, 0x4801);
|
|
put_be32(pb, stream_index);
|
|
|
|
mxf_write_local_tag(pb, 4, 0x4804);
|
|
if (type != MaterialPackage) {
|
|
for (element = mxf_essence_element_key; element->id != CODEC_ID_NONE; element++) {
|
|
if (st->codec->codec_id== element->id) {
|
|
// set essence_element key
|
|
memcpy(sc->track_essence_element_key, element->uid, 16);
|
|
sc->track_essence_element_key[15] += track_number_sign[i];
|
|
// write track number
|
|
put_buffer(pb, sc->track_essence_element_key + 12, 4);
|
|
|
|
track_number_sign[i]++;
|
|
break;
|
|
}
|
|
i++;
|
|
}
|
|
} else
|
|
put_be32(pb, 0); // track number of material package is 0
|
|
|
|
mxf_write_local_tag(pb, 8, 0x4B01);
|
|
put_be32(pb, st->time_base.den);
|
|
put_be32(pb, st->time_base.num);
|
|
|
|
// write origin
|
|
mxf_write_local_tag(pb, 8, 0x4B02);
|
|
put_be64(pb, 0);
|
|
|
|
// write sequence refs
|
|
mxf_write_local_tag(pb, 16, 0x4803);
|
|
mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, stream_index);
|
|
}
|
|
|
|
static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
|
|
{
|
|
const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
|
|
// find data define uls
|
|
mxf_write_local_tag(pb, 16, 0x0201);
|
|
put_buffer(pb, data_def_ul->uid, 16);
|
|
|
|
// write duration
|
|
mxf_write_local_tag(pb, 8, 0x0202);
|
|
put_be64(pb, st->duration);
|
|
}
|
|
|
|
static void mxf_write_sequence(AVFormatContext *s, int stream_index, enum MXFMetadataSetType type)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
AVStream *st = s->streams[stream_index];
|
|
|
|
mxf_write_metadata_key(pb, 0x010f00);
|
|
PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
|
|
klv_encode_ber_length(pb, 80);
|
|
|
|
mxf_write_local_tag(pb, 16, 0x3C0A);
|
|
mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, stream_index);
|
|
|
|
PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
|
|
mxf_write_common_fields(pb, st);
|
|
|
|
// write structural component
|
|
mxf_write_local_tag(pb, 16 + 8, 0x1001);
|
|
mxf_write_refs_count(pb, 1);
|
|
mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, stream_index);
|
|
}
|
|
|
|
static void mxf_write_structural_component(AVFormatContext *s, int stream_index, enum MXFMetadataSetType type)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
AVStream *st = s->streams[stream_index];
|
|
int i;
|
|
|
|
mxf_write_metadata_key(pb, 0x011100);
|
|
PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
|
|
klv_encode_ber_length(pb, 108);
|
|
|
|
// write uid
|
|
mxf_write_local_tag(pb, 16, 0x3C0A);
|
|
mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, stream_index);
|
|
|
|
PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
|
|
mxf_write_common_fields(pb, st);
|
|
|
|
// write start_position
|
|
mxf_write_local_tag(pb, 8, 0x1201);
|
|
put_be64(pb, 0);
|
|
|
|
// write source package uid, end of the reference
|
|
mxf_write_local_tag(pb, 32, 0x1101);
|
|
if (type == SourcePackage) {
|
|
for (i = 0; i < 4; i++)
|
|
put_be64(pb, 0);
|
|
} else
|
|
mxf_write_umid(pb, SourcePackage, 0);
|
|
|
|
// write source track id
|
|
mxf_write_local_tag(pb, 4, 0x1102);
|
|
if (type == SourcePackage)
|
|
put_be32(pb, 0);
|
|
else
|
|
put_be32(pb, stream_index);
|
|
}
|
|
|
|
static void mxf_write_multi_descriptor(AVFormatContext *s)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
int i;
|
|
|
|
mxf_write_metadata_key(pb, 0x014400);
|
|
PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
|
|
klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
|
|
|
|
mxf_write_local_tag(pb, 16, 0x3C0A);
|
|
mxf_write_uuid(pb, MultipleDescriptor, 0);
|
|
PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
|
|
|
|
// write sample rate
|
|
mxf_write_local_tag(pb, 8, 0x3001);
|
|
put_be32(pb, s->streams[0]->time_base.den);
|
|
put_be32(pb, s->streams[0]->time_base.num);
|
|
|
|
// write essence container ul
|
|
mxf_write_local_tag(pb, 16, 0x3004);
|
|
put_buffer(pb, multiple_desc_ul, 16);
|
|
|
|
// write sub descriptor refs
|
|
mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
|
|
mxf_write_refs_count(pb, s->nb_streams);
|
|
for (i = 0; i < s->nb_streams; i++)
|
|
mxf_write_uuid(pb, SubDescriptor, i);
|
|
}
|
|
|
|
static void mxf_write_generic_desc(ByteIOContext *pb, const MXFDescriptorWriteTableEntry *desc_tbl, AVStream *st)
|
|
{
|
|
MXFStreamContext *sc = st->priv_data;
|
|
|
|
put_buffer(pb, desc_tbl->key, 16);
|
|
klv_encode_ber_length(pb, 108);
|
|
|
|
mxf_write_local_tag(pb, 16, 0x3C0A);
|
|
mxf_write_uuid(pb, SubDescriptor, st->index);
|
|
|
|
mxf_write_local_tag(pb, 4, 0x3006);
|
|
put_be32(pb, st->index);
|
|
|
|
mxf_write_local_tag(pb, 8, 0x3001);
|
|
put_be32(pb, st->time_base.den);
|
|
put_be32(pb, st->time_base.num);
|
|
|
|
mxf_write_local_tag(pb, 16, 0x3004);
|
|
put_buffer(pb, *sc->essence_container_ul, 16);
|
|
}
|
|
|
|
static void mxf_write_mpegvideo_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
AVStream *st = s->streams[stream_index];
|
|
|
|
mxf_write_generic_desc(pb, desc_tbl, st);
|
|
|
|
mxf_write_local_tag(pb, 4, 0x3203);
|
|
put_be32(pb, st->codec->width);
|
|
|
|
mxf_write_local_tag(pb, 4, 0x3202);
|
|
put_be32(pb, st->codec->height);
|
|
|
|
mxf_write_local_tag(pb, 8, 0x320E);
|
|
put_be32(pb, st->codec->height * st->sample_aspect_ratio.den);
|
|
put_be32(pb, st->codec->width * st->sample_aspect_ratio.num);
|
|
|
|
// tmp write, will modified later
|
|
mxf_write_local_tag(pb, 16, 0x3201);
|
|
put_buffer(pb, ff_mxf_codec_uls->uid, 16);
|
|
}
|
|
|
|
static void mxf_write_wav_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
AVStream *st;
|
|
|
|
st = s->streams[stream_index];
|
|
mxf_write_generic_desc(pb, desc_tbl, st);
|
|
|
|
// write audio sampling rate
|
|
mxf_write_local_tag(pb, 8, 0x3D03);
|
|
put_be32(pb, st->codec->sample_rate);
|
|
put_be32(pb, 1);
|
|
|
|
mxf_write_local_tag(pb, 4, 0x3D07);
|
|
put_be32(pb, st->codec->channels);
|
|
|
|
mxf_write_local_tag(pb, 4, 0x3D01);
|
|
put_be32(pb, st->codec->bits_per_sample);
|
|
|
|
// tmp write, will modified later
|
|
mxf_write_local_tag(pb, 16, 0x3201);
|
|
put_buffer(pb, (ff_mxf_codec_uls + 8)->uid, 16);
|
|
}
|
|
|
|
static const MXFDescriptorWriteTableEntry mxf_descriptor_write_table[] = {
|
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_write_mpegvideo_desc, CODEC_ID_MPEG2VIDEO},
|
|
{ { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_write_wav_desc, CODEC_ID_PCM_S16LE},
|
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, CODEC_ID_NONE},
|
|
};
|
|
|
|
static void mxf_build_structural_metadata(AVFormatContext *s, enum MXFMetadataSetType type)
|
|
{
|
|
int i;
|
|
const MXFDescriptorWriteTableEntry *desc = NULL;
|
|
int track_number_sign[sizeof(mxf_essence_element_key)/sizeof(MXFCodecUL)] = { 0 };
|
|
|
|
mxf_write_package(s, type);
|
|
if (type == SourcePackage)
|
|
mxf_write_multi_descriptor(s);
|
|
|
|
for (i = 0;i < s->nb_streams; i++) {
|
|
mxf_write_track(s, i, type, track_number_sign);
|
|
mxf_write_sequence(s, i, type);
|
|
mxf_write_structural_component(s, i, type);
|
|
|
|
if (type == SourcePackage) {
|
|
for (desc = mxf_descriptor_write_table; desc->write; desc++) {
|
|
if (s->streams[i]->codec->codec_id == desc->type) {
|
|
desc->write(s, desc, i);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int mxf_write_header_metadata_sets(AVFormatContext *s)
|
|
{
|
|
mxf_write_preface(s);
|
|
mxf_write_identification(s);
|
|
mxf_write_content_storage(s);
|
|
mxf_build_structural_metadata(s, MaterialPackage);
|
|
mxf_build_structural_metadata(s, SourcePackage);
|
|
return 0;
|
|
}
|
|
|
|
static void mxf_write_partition(AVFormatContext *s, int64_t byte_position, int bodysid, const uint8_t *key)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
ByteIOContext *pb = s->pb;
|
|
|
|
// write klv
|
|
put_buffer(pb, key, 16);
|
|
|
|
klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
|
|
|
|
// write partition value
|
|
put_be16(pb, 1); // majorVersion
|
|
put_be16(pb, 2); // minorVersion
|
|
put_be32(pb, 1); // kagSize
|
|
|
|
put_be64(pb, byte_position); // thisPartition
|
|
put_be64(pb, 0); // previousPartition
|
|
|
|
// set offset
|
|
if (!byte_position)
|
|
mxf->header_footer_partition_offset = url_ftell(pb);
|
|
put_be64(pb, byte_position); // footerPartition,update later
|
|
|
|
// set offset
|
|
if (!byte_position)
|
|
mxf->header_byte_count_offset = url_ftell(pb);
|
|
put_be64(pb, 0); // headerByteCount, update later
|
|
|
|
// no indexTable
|
|
put_be64(pb, 0); // indexByteCount
|
|
put_be32(pb, 0); // indexSID
|
|
put_be64(pb, 0); // bodyOffset
|
|
|
|
put_be32(pb, bodysid); // bodySID
|
|
put_buffer(pb, op1a_ul, 16); // operational pattern
|
|
|
|
// essence container
|
|
mxf_write_essence_container_refs(s);
|
|
}
|
|
|
|
static int mux_write_header(AVFormatContext *s)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
ByteIOContext *pb = s->pb;
|
|
int64_t header_metadata_start, offset_now;
|
|
int i, index;
|
|
uint8_t present[sizeof(ff_mxf_essence_container_uls)/
|
|
sizeof(*ff_mxf_essence_container_uls)] = {0};
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
MXFStreamContext *sc = av_mallocz(sizeof(MXFStreamContext));
|
|
if (!sc)
|
|
return AVERROR(ENOMEM);
|
|
st->priv_data = sc;
|
|
// set pts information
|
|
if (st->codec->codec_type == CODEC_TYPE_VIDEO)
|
|
av_set_pts_info(st, 64, 1, st->codec->time_base.den);
|
|
else if (st->codec->codec_type == CODEC_TYPE_AUDIO)
|
|
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
|
|
sc->essence_container_ul = mxf_get_essence_container_ul(st->codec->codec_id, &index);
|
|
if (!sc->essence_container_ul) {
|
|
av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
|
|
"codec not currently supported in container\n", i);
|
|
return -1;
|
|
}
|
|
if (!present[index]) {
|
|
mxf->essence_containers_indices[mxf->essence_container_count++] = index;
|
|
present[index] = 1;
|
|
}
|
|
}
|
|
|
|
mxf_write_partition(s, 0, 1, header_partition_key);
|
|
|
|
// mark the start of the headermetadata and calculate metadata size
|
|
header_metadata_start = url_ftell(s->pb);
|
|
mxf_write_primer_pack(s);
|
|
if (mxf_write_header_metadata_sets(s) < 0)
|
|
goto fail;
|
|
offset_now = url_ftell(s->pb);
|
|
mxf->header_byte_count = offset_now - header_metadata_start;
|
|
// update header_byte_count
|
|
url_fseek(pb, mxf->header_byte_count_offset, SEEK_SET);
|
|
put_be64(pb, mxf->header_byte_count);
|
|
url_fseek(pb, offset_now, SEEK_SET);
|
|
|
|
put_flush_packet(pb);
|
|
return 0;
|
|
fail:
|
|
mxf_free(s);
|
|
return -1;
|
|
}
|
|
|
|
static int mux_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
AVStream *st = s->streams[pkt->stream_index];
|
|
MXFStreamContext *sc = st->priv_data;
|
|
|
|
put_buffer(pb, sc->track_essence_element_key, 16); // write key
|
|
klv_encode_ber_length(pb, pkt->size); // write length
|
|
put_buffer(pb, pkt->data, pkt->size); // write value
|
|
|
|
put_flush_packet(pb);
|
|
return 0;
|
|
}
|
|
|
|
static void mxf_update_header_partition(AVFormatContext *s, int64_t footer_partition_offset)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
ByteIOContext *pb = s->pb;
|
|
|
|
url_fseek(pb, mxf->header_footer_partition_offset, SEEK_SET);
|
|
put_be64(pb, footer_partition_offset);
|
|
put_flush_packet(pb);
|
|
}
|
|
|
|
|
|
static int mux_write_footer(AVFormatContext *s)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
int64_t byte_position= url_ftell(pb);
|
|
|
|
if (!url_is_streamed(s->pb)) {
|
|
mxf_write_partition(s, byte_position, 0, footer_partition_key);
|
|
put_flush_packet(pb);
|
|
mxf_update_header_partition(s, byte_position);
|
|
}
|
|
mxf_free(s);
|
|
return 0;
|
|
}
|
|
|
|
AVOutputFormat mxf_muxer = {
|
|
"mxf",
|
|
NULL_IF_CONFIG_SMALL("Material eXchange Format"),
|
|
NULL,
|
|
"mxf",
|
|
sizeof(MXFContext),
|
|
CODEC_ID_PCM_S16LE,
|
|
CODEC_ID_MPEG2VIDEO,
|
|
mux_write_header,
|
|
mux_write_packet,
|
|
mux_write_footer,
|
|
};
|
|
|
|
|