Apply parts of MXF muxer ok'ed by Michael
Originally committed as revision 14903 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak
parent
474efc1889
commit
9b9466b0cd
@ -64,7 +64,11 @@ extern const MXFDataDefinitionUL ff_mxf_data_definition_uls[];
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extern const MXFCodecUL ff_mxf_codec_uls[];
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extern const MXFCodecUL ff_mxf_essence_container_uls[];
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#ifdef DEBUG
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#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, \
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(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])
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#else
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#define PRINT_KEY(pc, s, x)
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#endif
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#endif /* FFMPEG_MXF_H */
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@ -51,7 +51,7 @@ typedef struct MXFContext {
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typedef struct {
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const UID key;
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int (*write)();
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void (*write)();
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enum CodecType type;
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} MXFDescriptorWriteTableEntry;
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@ -79,6 +79,68 @@ static const MXFCodecUL mxf_essence_element_key[] = {
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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,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x04,0x00,0x00,0x00}}, /* 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 Numberr */
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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 descriptor uid*/
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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 ul */
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// generic picture eseence 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 heigth */
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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}}, /* channel count */
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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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@ -130,7 +192,7 @@ static const MXFCodecUL *mxf_get_essence_container_ul(enum CodecID type)
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return uls;
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}
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static int mxf_write_primer_pack(AVFormatContext *s)
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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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@ -147,7 +209,6 @@ static int mxf_write_primer_pack(AVFormatContext *s)
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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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return 0;
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}
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static void mxf_write_local_tag(ByteIOContext *pb, int value_size, int tag)
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@ -184,6 +245,113 @@ static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type
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return uls;
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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);
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PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
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klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
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// write preface set uid
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mxf_write_local_tag(pb, 16, 0x3C0A);
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mxf_write_uuid(pb, Preface, 0);
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PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
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// write create date as unknown
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mxf_write_local_tag(pb, 8, 0x3B02);
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put_be64(pb, 0);
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// write version
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mxf_write_local_tag(pb, 2, 0x3B05);
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put_be16(pb, 1);
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// write identification_refs
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mxf_write_local_tag(pb, 16 + 8, 0x3B06);
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mxf_write_refs_count(pb, 1);
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mxf_write_uuid(pb, Identification, 0);
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// write content_storage_refs
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mxf_write_local_tag(pb, 16, 0x3B03);
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mxf_write_uuid(pb, ContentStorage, 0);
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mxf_write_local_tag(pb, 16, 0x3B09);
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put_buffer(pb, op1a_ul, 16);
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// write essence_container_refs
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mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
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mxf_write_essence_container_refs(s, 1);
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// write dm_scheme_refs
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mxf_write_local_tag(pb, 8, 0x3B0B);
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put_be64(pb, 0);
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}
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static void mxf_write_identification(AVFormatContext *s)
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{
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ByteIOContext *pb = s->pb;
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int length, company_name_len, product_name_len, version_string_len;
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mxf_write_metadata_key(pb, 0x013000);
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PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
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company_name_len = sizeof("FFmpeg");
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product_name_len = sizeof("OP1a Muxer");
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length = 80 + company_name_len + product_name_len;
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if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
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version_string_len = sizeof(LIBAVFORMAT_IDENT);
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length += 4 + version_string_len;
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}
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klv_encode_ber_length(pb, length);
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// write uid
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mxf_write_local_tag(pb, 16, 0x3C0A);
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mxf_write_uuid(pb, Identification, 0);
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PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
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// write generation uid
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mxf_write_local_tag(pb, 16, 0x3C09);
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mxf_write_uuid(pb, Identification, 1);
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mxf_write_local_tag(pb, company_name_len, 0x3C01);
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put_buffer(pb, "FFmpeg", company_name_len);
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mxf_write_local_tag(pb, product_name_len, 0x3C02);
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put_buffer(pb, "OP1a Muxer", product_name_len);
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if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT)) {
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mxf_write_local_tag(pb, version_string_len, 0x3C04);
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put_buffer(pb, LIBAVFORMAT_IDENT, version_string_len);
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}
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// write product uid
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mxf_write_local_tag(pb, 16, 0x3C05);
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mxf_write_uuid(pb, Identification, 2);
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// write modified date
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mxf_write_local_tag(pb, 8, 0x3C06);
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put_be64(pb, 0);
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}
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static void mxf_write_content_storage(AVFormatContext *s)
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{
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ByteIOContext *pb = s->pb;
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mxf_write_metadata_key(pb, 0x011800);
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PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
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klv_encode_ber_length(pb, 64);
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// write uid
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mxf_write_local_tag(pb, 16, 0x3C0A);
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mxf_write_uuid(pb, ContentStorage, 0);
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PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
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// write package reference
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mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
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mxf_write_refs_count(pb, 2);
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mxf_write_uuid(pb, MaterialPackage, 0);
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mxf_write_uuid(pb, SourcePackage, 0);
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}
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static void mxf_write_common_fields( ByteIOContext *pb, AVStream *st)
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{
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const MXFDataDefinitionUL * data_def_ul;
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@ -212,12 +380,42 @@ static int mux_write_packet(AVFormatContext *s, AVPacket *pkt)
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return 0;
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}
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static void mxf_write_multi_descriptor(AVFormatContext *s)
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{
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ByteIOContext *pb = s->pb;
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int i;
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mxf_write_metadata_key(pb, 0x014400);
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PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
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klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
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mxf_write_local_tag(pb, 16, 0x3C0A);
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mxf_write_uuid(pb, MultipleDescriptor, 0);
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PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
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// write sample rate
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mxf_write_local_tag(pb, 8, 0x3001);
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put_be32(pb, s->streams[0]->time_base.den);
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put_be32(pb, s->streams[0]->time_base.num);
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// write essence container ul
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mxf_write_local_tag(pb, 16, 0x3004);
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put_buffer(pb, multiple_desc_ul, 16);
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// write sub descriptor refs
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mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
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mxf_write_refs_count(pb, s->nb_streams);
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for (i = 0; i < s->nb_streams; i++) {
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mxf_write_uuid(pb, SubDescriptor, i);
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}
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}
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static void mxf_write_header_desc(ByteIOContext *pb, const MXFDescriptorWriteTableEntry *desc_tbl, AVStream *st)
|
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{
|
||||
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_byte_count_offset, SEEK_SET);
|
||||
put_be64(pb, mxf->header_byte_count);
|
||||
put_flush_packet(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,
|
||||
};
|
||||
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user