mirror of https://git.ffmpeg.org/ffmpeg.git
612 lines
22 KiB
C
612 lines
22 KiB
C
/*
|
|
* MXF muxer
|
|
* Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/*
|
|
* References
|
|
* SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
|
|
* SMPTE 377M MXF File Format Specifications
|
|
* SMPTE 379M MXF Generic Container
|
|
* SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
|
|
* SMPTE RP210: SMPTE Metadata Dictionary
|
|
* SMPTE RP224: Registry of SMPTE Universal Labels
|
|
*/
|
|
|
|
//#define DEBUG
|
|
|
|
#include "mxf.h"
|
|
|
|
typedef struct {
|
|
int local_tag;
|
|
UID uid;
|
|
} MXFLocalTagPair;
|
|
|
|
typedef struct {
|
|
UID track_essence_element_key;
|
|
} MXFStreamContext;
|
|
|
|
typedef struct MXFContext {
|
|
int64_t header_byte_count;
|
|
int64_t header_byte_count_offset;
|
|
int64_t header_footer_partition_offset;
|
|
int essence_container_count;
|
|
} MXFContext;
|
|
|
|
typedef struct {
|
|
const UID key;
|
|
void (*write)();
|
|
enum CodecType type;
|
|
} MXFDescriptorWriteTableEntry;
|
|
|
|
static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
|
|
static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x0F,0x00,0x13,0x00,0x00,0x00 };
|
|
|
|
/**
|
|
* complete key for operation pattern, partitions, and primer pack
|
|
*/
|
|
static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
|
|
static const uint8_t header_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete
|
|
static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
|
|
static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
|
|
|
|
/**
|
|
* partial key for header metadata
|
|
*/
|
|
static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
|
|
|
|
static const MXFCodecUL mxf_essence_element_key[] = {
|
|
{ { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, 14, CODEC_ID_MPEG2VIDEO},
|
|
{ { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 }, 14, CODEC_ID_PCM_S16LE},
|
|
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, CODEC_ID_NONE},
|
|
};
|
|
|
|
static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
|
|
|
|
/**
|
|
* SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
|
|
*/
|
|
static const MXFLocalTagPair mxf_local_tag_batch[] = {
|
|
// preface set
|
|
{ 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
|
|
{ 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
|
|
{ 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
|
|
{ 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
|
|
{ 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
|
|
{ 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
|
|
{ 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
|
|
{ 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
|
|
// Identification
|
|
{ 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
|
|
{ 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
|
|
{ 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
|
|
{ 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x04,0x00,0x00,0x00}}, /* Version String */
|
|
{ 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
|
|
{ 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
|
|
// Content Storage
|
|
{ 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
|
|
// Essence Container Data
|
|
{ 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
|
|
{ 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
|
|
// Package
|
|
{ 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
|
|
{ 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
|
|
{ 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
|
|
{ 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
|
|
{ 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
|
|
// Track
|
|
{ 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
|
|
{ 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x03,0x00,0x00}}, /* Track Numberr */
|
|
{ 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
|
|
{ 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
|
|
{ 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
|
|
// Sequence
|
|
{ 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
|
|
{ 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
|
|
{ 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
|
|
// Source Clip
|
|
{ 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Start position */
|
|
{ 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
|
|
{ 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
|
|
// file descriptor
|
|
{ 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* sub descriptor uid*/
|
|
{ 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
|
|
{ 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
|
|
{ 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* essence container ul */
|
|
// generic picture eseence descriptor
|
|
{ 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* stored width */
|
|
{ 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* stored heigth */
|
|
{ 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* aspect ratio*/
|
|
{ 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* picture essence coding*/
|
|
// generic sound essence descriptor
|
|
{ 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* audio sampling rate */
|
|
{ 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* channel count */
|
|
{ 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* quantization bits */
|
|
{ 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* sound essence compression */
|
|
};
|
|
|
|
static void mxf_write_uuid(ByteIOContext *pb, enum CodecID type, int value)
|
|
{
|
|
put_buffer(pb, uuid_base, 12);
|
|
put_be16(pb, type);
|
|
put_be16(pb, value);
|
|
}
|
|
|
|
static void mxf_write_umid(ByteIOContext *pb, enum CodecID type, int value)
|
|
{
|
|
put_buffer(pb, umid_base, 16);
|
|
mxf_write_uuid(pb, type, value);
|
|
}
|
|
|
|
static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
|
|
{
|
|
put_be32(pb, ref_count);
|
|
put_be32(pb, 16);
|
|
}
|
|
|
|
static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
|
|
{
|
|
// Determine the best BER size
|
|
int size;
|
|
if (len < 128) {
|
|
//short form
|
|
put_byte(pb, len);
|
|
return 1;
|
|
}
|
|
|
|
size = (av_log2(len) >> 3) + 1;
|
|
|
|
// long form
|
|
put_byte(pb, 0x80 + size);
|
|
while(size) {
|
|
size --;
|
|
put_byte(pb, len >> 8 * size & 0xff);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const MXFCodecUL *mxf_get_essence_container_ul(enum CodecID type)
|
|
{
|
|
const MXFCodecUL *uls = ff_mxf_essence_container_uls;
|
|
while (uls->id != CODEC_ID_NONE) {
|
|
if (uls->id == type)
|
|
break;
|
|
uls++;
|
|
}
|
|
return uls;
|
|
}
|
|
|
|
static void mxf_write_primer_pack(AVFormatContext *s)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
int local_tag_number, i = 0;
|
|
|
|
local_tag_number = sizeof(mxf_local_tag_batch) / sizeof(MXFLocalTagPair);
|
|
|
|
put_buffer(pb, primer_pack_key, 16);
|
|
klv_encode_ber_length(pb, local_tag_number * 18 + 8);
|
|
|
|
put_be32(pb, local_tag_number); // local_tag num
|
|
put_be32(pb, 18); // item size, always 18 according to the specs
|
|
|
|
for (i = 0; i < local_tag_number; i++) {
|
|
put_be16(pb, mxf_local_tag_batch[i].local_tag);
|
|
put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
|
|
}
|
|
}
|
|
|
|
static void mxf_write_local_tag(ByteIOContext *pb, int value_size, int tag)
|
|
{
|
|
put_be16(pb, tag);
|
|
put_be16(pb, value_size);
|
|
}
|
|
|
|
static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
|
|
{
|
|
put_buffer(pb, header_metadata_key, 13);
|
|
put_be24(pb, value);
|
|
}
|
|
|
|
static void mxf_free(AVFormatContext *s)
|
|
{
|
|
AVStream *st;
|
|
int i;
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
st = s->streams[i];
|
|
av_freep(&st->priv_data);
|
|
}
|
|
}
|
|
|
|
static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
|
|
{
|
|
const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
|
|
while (uls->type != CODEC_TYPE_DATA) {
|
|
if (type == uls->type)
|
|
break;
|
|
uls ++;
|
|
}
|
|
return uls;
|
|
}
|
|
|
|
static void mxf_write_preface(AVFormatContext *s)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
ByteIOContext *pb = s->pb;
|
|
|
|
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, 1);
|
|
|
|
// write dm_scheme_refs
|
|
mxf_write_local_tag(pb, 8, 0x3B0B);
|
|
put_be64(pb, 0);
|
|
}
|
|
|
|
static void mxf_write_identification(AVFormatContext *s)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
int length, company_name_len, product_name_len, version_string_len;
|
|
|
|
mxf_write_metadata_key(pb, 0x013000);
|
|
PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
|
|
company_name_len = sizeof("FFmpeg");
|
|
product_name_len = sizeof("OP1a Muxer");
|
|
|
|
length = 80 + company_name_len + product_name_len;
|
|
if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
|
|
version_string_len = sizeof(LIBAVFORMAT_IDENT);
|
|
length += 4 + version_string_len;
|
|
}
|
|
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(pb, company_name_len, 0x3C01);
|
|
put_buffer(pb, "FFmpeg", company_name_len);
|
|
|
|
mxf_write_local_tag(pb, product_name_len, 0x3C02);
|
|
put_buffer(pb, "OP1a Muxer", product_name_len);
|
|
|
|
if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
|
|
mxf_write_local_tag(pb, version_string_len, 0x3C04);
|
|
put_buffer(pb, LIBAVFORMAT_IDENT, version_string_len);
|
|
}
|
|
|
|
// 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_common_fields( ByteIOContext *pb, AVStream *st)
|
|
{
|
|
const MXFDataDefinitionUL * data_def_ul;
|
|
|
|
// find data define uls
|
|
data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
|
|
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 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_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_header_desc(ByteIOContext *pb, const MXFDescriptorWriteTableEntry *desc_tbl, AVStream *st)
|
|
{
|
|
const MXFCodecUL *codec_ul;
|
|
|
|
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);
|
|
|
|
codec_ul = mxf_get_essence_container_ul(st->codec->codec_id);
|
|
mxf_write_local_tag(pb, 16, 0x3004);
|
|
put_buffer(pb, codec_ul->uid, 16);
|
|
}
|
|
|
|
static void mxf_write_mpeg_video_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index)
|
|
{
|
|
ByteIOContext *pb = s->pb;
|
|
AVStream *st;
|
|
|
|
st = s->streams[stream_index];
|
|
mxf_write_header_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_header_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_mpeg_video_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)
|
|
{
|
|
AVStream *st;
|
|
MXFStreamContext *sc = NULL;
|
|
int i;
|
|
mxf_write_preface(s);
|
|
|
|
mxf_write_identification(s);
|
|
|
|
mxf_write_content_storage(s);
|
|
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
st = s->streams[i];
|
|
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);
|
|
}
|
|
}
|
|
|
|
mxf_build_structural_metadata(s, MaterialPackage);
|
|
mxf_build_structural_metadata(s, SourcePackage);
|
|
return 0;
|
|
}
|
|
|
|
static int mux_write_header(AVFormatContext *s)
|
|
{
|
|
MXFContext *mxf = s->priv_data;
|
|
ByteIOContext *pb = s->pb;
|
|
int64_t header_metadata_start, offset_now;
|
|
|
|
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 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,
|
|
};
|
|
|
|
|