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Apply parts of MXF muxer ok'ed by Michael

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Originally committed as revision 14903 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Vitor Sessak 17 years ago
parent 474efc1889
commit 9b9466b0cd
2 changed files with 269 additions and 39 deletions
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  1. 4
      libavformat/mxf.h
  2. 304
      libavformat/mxfenc.c

4
libavformat/mxf.h
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@ -64,7 +64,11 @@ extern const MXFDataDefinitionUL ff_mxf_data_definition_uls[];
extern const MXFCodecUL ff_mxf_codec_uls[];
extern const MXFCodecUL ff_mxf_essence_container_uls[];
#ifdef DEBUG
#define PRINT_KEY(pc, s, x) dprintf(pc, "%s %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n", s, \
(x)[0], (x)[1], (x)[2], (x)[3], (x)[4], (x)[5], (x)[6], (x)[7], (x)[8], (x)[9], (x)[10], (x)[11], (x)[12], (x)[13], (x)[14], (x)[15])
#else
#define PRINT_KEY(pc, s, x)
#endif
#endif /* FFMPEG_MXF_H */

304
libavformat/mxfenc.c
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@ -51,7 +51,7 @@ typedef struct MXFContext {
typedef struct {
const UID key;
int (*write)();
void (*write)();
enum CodecType type;
} MXFDescriptorWriteTableEntry;
@ -79,6 +79,68 @@ static const MXFCodecUL mxf_essence_element_key[] = {
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);
@ -130,7 +192,7 @@ static const MXFCodecUL *mxf_get_essence_container_ul(enum CodecID type)
return uls;
}
static int mxf_write_primer_pack(AVFormatContext *s)
static void mxf_write_primer_pack(AVFormatContext *s)
{
ByteIOContext *pb = s->pb;
int local_tag_number, i = 0;
@ -147,7 +209,6 @@ static int mxf_write_primer_pack(AVFormatContext *s)
put_be16(pb, mxf_local_tag_batch[i].local_tag);
put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
}
return 0;
}
static void mxf_write_local_tag(ByteIOContext *pb, int value_size, int tag)
@ -184,6 +245,113 @@ static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type
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;
@ -212,12 +380,42 @@ static int mux_write_packet(AVFormatContext *s, AVPacket *pkt)
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, 96);
klv_encode_ber_length(pb, 108);
mxf_write_local_tag(pb, 16, 0x3C0A);
mxf_write_uuid(pb, SubDescriptor, st->index);
@ -225,12 +423,16 @@ static void mxf_write_header_desc(ByteIOContext *pb, const MXFDescriptorWriteTab
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 int mxf_write_mpeg_video_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index)
static void mxf_write_mpeg_video_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index)
{
ByteIOContext *pb = s->pb;
AVStream *st;
@ -251,10 +453,9 @@ static int mxf_write_mpeg_video_desc(AVFormatContext *s, const MXFDescriptorWrit
// tmp write, will modified later
mxf_write_local_tag(pb, 16, 0x3201);
put_buffer(pb, ff_mxf_codec_uls->uid, 16);
return 0;
}
static int mxf_write_wav_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index)
static void mxf_write_wav_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index)
{
ByteIOContext *pb = s->pb;
AVStream *st;
@ -276,7 +477,6 @@ static int mxf_write_wav_desc(AVFormatContext *s, const MXFDescriptorWriteTableE
// tmp write, will modified later
mxf_write_local_tag(pb, 16, 0x3201);
put_buffer(pb, (ff_mxf_codec_uls + 8) ->uid, 16);
return 0;
}
static const MXFDescriptorWriteTableEntry mxf_descriptor_write_table[] = {
@ -285,40 +485,30 @@ static const MXFDescriptorWriteTableEntry mxf_descriptor_write_table[] = {
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, CODEC_ID_NONE},
};
static int mxf_build_structural_metadata(AVFormatContext *s, enum MXFMetadataSetType type)
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 };
if (mxf_write_package(s, type) < 0)
return -1;
if (type == SourcePackage) {
if (mxf_write_multi_descriptor(s) < 0)
return -1;
}
mxf_write_package(s, type);
if (type == SourcePackage)
mxf_write_multi_descriptor(s);
for (i = 0;i < s->nb_streams; i++) {
if ( mxf_write_track(s, i, type, track_number_sign) < 0)
return -1;
if ( mxf_write_sequence(s, i, type) < 0)
return -1;
if ( mxf_write_structural_component(s, i, type) < 0)
return -1;
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) {
if ( desc->write(s, desc, i) < 0) {
av_log(s, AV_LOG_ERROR, "error writing descriptor\n");
return -1;
}
desc->write(s, desc, i);
break;
}
}
}
}
return 0;
}
static int mxf_write_header_metadata_sets(AVFormatContext *s)
@ -326,14 +516,11 @@ static int mxf_write_header_metadata_sets(AVFormatContext *s)
AVStream *st;
MXFStreamContext *sc = NULL;
int i;
if (mxf_write_preface(s) < 0)
return -1;
mxf_write_preface(s);
if (mxf_write_identification(s) < 0)
return -1;
mxf_write_identification(s);
if (mxf_write_content_storage(s) < 0)
return -1;
mxf_write_content_storage(s);
for (i = 0; i < s->nb_streams; i++) {
st = s->streams[i];
@ -349,28 +536,65 @@ static int mxf_write_header_metadata_sets(AVFormatContext *s)
}
}
if (mxf_build_structural_metadata(s, MaterialPackage) < 0)
return -1;
if (mxf_build_structural_metadata(s, SourcePackage) < 0)
return -1;
mxf_build_structural_metadata(s, MaterialPackage);
mxf_build_structural_metadata(s, SourcePackage);
return 0;
}
static int mxf_update_header_partition(AVFormatContext *s, int64_t footer_partition_offset)
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"),
@ -383,3 +607,5 @@ AVOutputFormat mxf_muxer = {
mux_write_packet,
mux_write_footer,
};

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