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- #include <math.h>
- #include <time.h>
- #include "libavutil/fifo.h"
- #include "audiointerleave.h"
- #include "mxf.h"
- static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
- static const int PAL_samples_per_frame[] = { 1920, 0 };
- #define MXF_INDEX_CLUSTER_SIZE 4096
- #define KAG_SIZE 512
- typedef struct {
- int local_tag;
- UID uid;
- } MXFLocalTagPair;
- typedef struct {
- uint8_t flags;
- uint64_t offset;
- unsigned slice_offset;
- } MXFIndexEntry;
- typedef struct {
- AudioInterleaveContext aic;
- UID track_essence_element_key;
- int index;
- const UID *codec_ul;
- int64_t duration;
- int order;
- int interlaced;
- int temporal_reordering;
- } MXFStreamContext;
- typedef struct {
- UID container_ul;
- UID element_ul;
- UID codec_ul;
- void (*write_desc)();
- } MXFContainerEssenceEntry;
- static const struct {
- enum CodecID id;
- int index;
- } mxf_essence_mappings[] = {
- { CODEC_ID_MPEG2VIDEO, 0 },
- { CODEC_ID_PCM_S24LE, 1 },
- { CODEC_ID_PCM_S16LE, 1 },
- { 0 }
- };
- static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
- static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
- static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
- static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
- { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
- { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
- mxf_write_mpegvideo_desc },
- { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
- mxf_write_aes3_desc },
- { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
- mxf_write_wav_desc },
- { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
- { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
- { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
- NULL },
- };
- typedef struct MXFContext {
- int64_t footer_partition_offset;
- int essence_container_count;
- uint8_t essence_containers_indices[FF_ARRAY_ELEMS(mxf_essence_container_uls)];
- AVRational time_base;
- int header_written;
- MXFIndexEntry *index_entries;
- unsigned edit_units_count;
- uint64_t timestamp;
- uint8_t slice_count;
- } MXFContext;
- 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,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
- 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 footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 };
- static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
- static const uint8_t index_table_segment_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
- static const uint8_t random_index_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
- static const uint8_t header_open_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x01,0x00 };
- static const uint8_t header_closed_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 };
- static const uint8_t klv_fill_key[] = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
- static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
- static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
- static const MXFLocalTagPair mxf_local_tag_batch[] = {
-
- { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}},
- { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}},
- { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}},
- { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}},
- { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}},
- { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}},
- { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}},
- { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}},
-
- { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}},
- { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}},
- { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}},
- { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}},
- { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}},
- { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}},
-
- { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}},
- { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}},
-
- { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}},
- { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}},
-
- { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}},
- { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}},
- { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}},
- { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}},
- { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}},
-
- { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}},
- { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}},
- { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}},
- { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}},
- { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}},
-
- { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}},
- { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}},
- { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}},
-
- { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}},
- { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}},
- { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}},
-
- { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}},
- { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}},
- { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}},
- { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}},
-
- { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}},
- { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}},
- { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}},
- { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}},
- { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}},
- { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}},
- { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}},
- { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}},
-
- { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}},
- { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}},
- { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}},
- { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}},
- { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}},
-
- { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}},
- { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}},
- { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}},
- { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00,0x00}},
- { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}},
- { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}},
- { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}},
- { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}},
-
- { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}},
-
- { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}},
- { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}},
- };
- static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType 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 MXFMetadataSetType 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_ber_length(uint64_t len)
- {
- if (len < 128)
- return 1;
- else
- return (av_log2(len) >> 3) + 2;
- }
- static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
- {
-
- int size;
- if (len < 128) {
-
- put_byte(pb, len);
- return 1;
- }
- size = (av_log2(len) >> 3) + 1;
-
- put_byte(pb, 0x80 + size);
- while(size) {
- size--;
- put_byte(pb, len >> 8 * size & 0xff);
- }
- return 0;
- }
- static int mxf_get_essence_container_ul_index(enum CodecID id)
- {
- int i;
- for (i = 0; mxf_essence_mappings[i].id; i++)
- if (mxf_essence_mappings[i].id == id)
- return mxf_essence_mappings[i].index;
- return -1;
- }
- static void mxf_write_primer_pack(AVFormatContext *s)
- {
- ByteIOContext *pb = s->pb;
- int local_tag_number, i = 0;
- local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
- put_buffer(pb, primer_pack_key, 16);
- klv_encode_ber_length(pb, local_tag_number * 18 + 8);
- put_be32(pb, local_tag_number);
- put_be32(pb, 18);
- 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 size, int tag)
- {
- put_be16(pb, tag);
- put_be16(pb, 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)
- {
- int i;
- for (i = 0; i < s->nb_streams; i++) {
- AVStream *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_essence_container_refs(AVFormatContext *s)
- {
- MXFContext *c = s->priv_data;
- ByteIOContext *pb = s->pb;
- int i;
- mxf_write_refs_count(pb, c->essence_container_count);
- av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
- for (i = 0; i < c->essence_container_count; i++) {
- put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
- PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
- }
- }
- 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);
-
- mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, Preface, 0);
- PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
-
- mxf_write_local_tag(pb, 8, 0x3B02);
- put_be64(pb, mxf->timestamp);
-
- mxf_write_local_tag(pb, 2, 0x3B05);
- put_be16(pb, 1);
-
- mxf_write_local_tag(pb, 16 + 8, 0x3B06);
- mxf_write_refs_count(pb, 1);
- mxf_write_uuid(pb, Identification, 0);
-
- 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);
-
- mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
- mxf_write_essence_container_refs(s);
-
- mxf_write_local_tag(pb, 8, 0x3B0B);
- put_be64(pb, 0);
- }
- 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)
- {
- MXFContext *mxf = s->priv_data;
- 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;
- klv_encode_ber_length(pb, length);
-
- mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, Identification, 0);
- PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
-
- mxf_write_local_tag(pb, 16, 0x3C09);
- mxf_write_uuid(pb, Identification, 1);
- mxf_write_local_tag_utf16(pb, 0x3C01, company);
- mxf_write_local_tag_utf16(pb, 0x3C02, product);
- mxf_write_local_tag_utf16(pb, 0x3C04, version);
-
- mxf_write_local_tag(pb, 16, 0x3C05);
- mxf_write_uuid(pb, Identification, 2);
-
- mxf_write_local_tag(pb, 8, 0x3C06);
- put_be64(pb, mxf->timestamp);
- }
- 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, 92);
-
- mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, ContentStorage, 0);
- PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
-
- 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);
-
- mxf_write_local_tag(pb, 8 + 16, 0x1902);
- mxf_write_refs_count(pb, 1);
- mxf_write_uuid(pb, EssenceContainerData, 0);
- }
- static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
- {
- MXFContext *mxf = s->priv_data;
- ByteIOContext *pb = s->pb;
- MXFStreamContext *sc = st->priv_data;
- mxf_write_metadata_key(pb, 0x013b00);
- PRINT_KEY(s, "track key", pb->buf_ptr - 16);
- klv_encode_ber_length(pb, 80);
-
- mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
- PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
-
- mxf_write_local_tag(pb, 4, 0x4801);
- put_be32(pb, st->index);
-
- mxf_write_local_tag(pb, 4, 0x4804);
- if (type == MaterialPackage)
- put_be32(pb, 0);
- else
- put_buffer(pb, sc->track_essence_element_key + 12, 4);
- mxf_write_local_tag(pb, 8, 0x4B01);
- put_be32(pb, mxf->time_base.den);
- put_be32(pb, mxf->time_base.num);
-
- mxf_write_local_tag(pb, 8, 0x4B02);
- put_be64(pb, 0);
-
- mxf_write_local_tag(pb, 16, 0x4803);
- mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->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);
- MXFStreamContext *sc = st->priv_data;
-
- mxf_write_local_tag(pb, 16, 0x0201);
- put_buffer(pb, data_def_ul->uid, 16);
-
- mxf_write_local_tag(pb, 8, 0x0202);
- put_be64(pb, sc->duration);
- }
- static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
- {
- ByteIOContext *pb = s->pb;
- 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, st->index);
- PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
- mxf_write_common_fields(pb, st);
-
- mxf_write_local_tag(pb, 16 + 8, 0x1001);
- mxf_write_refs_count(pb, 1);
- mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
- }
- static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
- {
- ByteIOContext *pb = s->pb;
- int i;
- mxf_write_metadata_key(pb, 0x011100);
- PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
- klv_encode_ber_length(pb, 108);
-
- mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
- PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
- mxf_write_common_fields(pb, st);
-
- mxf_write_local_tag(pb, 8, 0x1201);
- put_be64(pb, 0);
-
- 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);
-
- mxf_write_local_tag(pb, 4, 0x1102);
- if (type == SourcePackage)
- put_be32(pb, 0);
- else
- put_be32(pb, st->index);
- }
- static void mxf_write_multi_descriptor(AVFormatContext *s)
- {
- MXFContext *mxf = s->priv_data;
- 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);
-
- mxf_write_local_tag(pb, 8, 0x3001);
- put_be32(pb, mxf->time_base.den);
- put_be32(pb, mxf->time_base.num);
-
- mxf_write_local_tag(pb, 16, 0x3004);
- put_buffer(pb, multiple_desc_ul, 16);
-
- 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(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
- {
- MXFContext *mxf = s->priv_data;
- MXFStreamContext *sc = st->priv_data;
- ByteIOContext *pb = s->pb;
- put_buffer(pb, key, 16);
- klv_encode_ber_length(pb, size);
- 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, mxf->time_base.den);
- put_be32(pb, mxf->time_base.num);
- mxf_write_local_tag(pb, 16, 0x3004);
- put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
- }
- static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
- static const UID mxf_wav_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
- static const UID mxf_aes3_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
- static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
- {
- MXFStreamContext *sc = st->priv_data;
- ByteIOContext *pb = s->pb;
- int stored_height = (st->codec->height+15)/16*16;
- AVRational dar;
- int f1, f2;
- mxf_write_generic_desc(s, st, mxf_mpegvideo_descriptor_key, 153+sc->interlaced*4);
- mxf_write_local_tag(pb, 4, 0x3203);
- put_be32(pb, st->codec->width);
- mxf_write_local_tag(pb, 4, 0x3202);
- put_be32(pb, stored_height>>sc->interlaced);
- mxf_write_local_tag(pb, 4, 0x3209);
- put_be32(pb, st->codec->width);
- mxf_write_local_tag(pb, 4, 0x3208);
- put_be32(pb, st->codec->height>>sc->interlaced);
-
- mxf_write_local_tag(pb, 4, 0x8000);
- put_be32(pb, st->codec->bit_rate);
-
- mxf_write_local_tag(pb, 1, 0x320C);
- put_byte(pb, sc->interlaced);
-
- switch (st->codec->height) {
- case 576: f1 = 23; f2 = 336; break;
- case 608: f1 = 7; f2 = 320; break;
- case 480: f1 = 20; f2 = 283; break;
- case 512: f1 = 7; f2 = 270; break;
- case 720: f1 = 26; f2 = 0; break;
- case 1080: f1 = 21; f2 = 584; break;
- default: f1 = 0; f2 = 0; break;
- }
- if (!sc->interlaced) {
- f2 = 0;
- f1 *= 2;
- }
- mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
- put_be32(pb, sc->interlaced ? 2 : 1);
- put_be32(pb, 4);
- put_be32(pb, f1);
- if (sc->interlaced)
- put_be32(pb, f2);
- av_reduce(&dar.num, &dar.den,
- st->codec->width*st->codec->sample_aspect_ratio.num,
- st->codec->height*st->codec->sample_aspect_ratio.den,
- 1024*1024);
- mxf_write_local_tag(pb, 8, 0x320E);
- put_be32(pb, dar.num);
- put_be32(pb, dar.den);
- mxf_write_local_tag(pb, 16, 0x3201);
- put_buffer(pb, *sc->codec_ul, 16);
- }
- static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
- {
- ByteIOContext *pb = s->pb;
- mxf_write_generic_desc(s, st, key, size);
-
- mxf_write_local_tag(pb, 1, 0x3D02);
- put_byte(pb, 1);
-
- 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, av_get_bits_per_sample(st->codec->codec_id));
- }
- static void mxf_write_wav_common_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
- {
- ByteIOContext *pb = s->pb;
- mxf_write_generic_sound_desc(s, st, key, size);
- mxf_write_local_tag(pb, 2, 0x3D0A);
- put_be16(pb, st->codec->block_align);
-
- mxf_write_local_tag(pb, 4, 0x3D09);
- put_be32(pb, st->codec->block_align*st->codec->sample_rate);
- }
- static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
- {
- mxf_write_wav_common_desc(s, st, mxf_wav_descriptor_key, 107);
- }
- static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
- {
- mxf_write_wav_common_desc(s, st, mxf_aes3_descriptor_key, 107);
- }
- static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
- {
- MXFContext *mxf = s->priv_data;
- 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);
- }
-
- 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);
-
- mxf_write_local_tag(pb, 32, 0x4401);
- mxf_write_umid(pb, type, 0);
- PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
-
- mxf_write_local_tag(pb, 8, 0x4405);
- put_be64(pb, mxf->timestamp);
-
- mxf_write_local_tag(pb, 8, 0x4404);
- put_be64(pb, mxf->timestamp);
-
- 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);
-
- if (type == SourcePackage) {
- mxf_write_local_tag(pb, 16, 0x4701);
- if (s->nb_streams > 1) {
- mxf_write_uuid(pb, MultipleDescriptor, 0);
- mxf_write_multi_descriptor(s);
- } else
- mxf_write_uuid(pb, SubDescriptor, 0);
- }
- for (i = 0; i < s->nb_streams; i++) {
- AVStream *st = s->streams[i];
- mxf_write_track(s, st, type);
- mxf_write_sequence(s, st, type);
- mxf_write_structural_component(s, st, type);
- if (type == SourcePackage) {
- MXFStreamContext *sc = st->priv_data;
- mxf_essence_container_uls[sc->index].write_desc(s, st);
- }
- }
- }
- static int mxf_write_essence_container_data(AVFormatContext *s)
- {
- ByteIOContext *pb = s->pb;
- mxf_write_metadata_key(pb, 0x012300);
- klv_encode_ber_length(pb, 72);
- mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, EssenceContainerData, 0);
- mxf_write_local_tag(pb, 32, 0x2701);
- mxf_write_umid(pb, SourcePackage, 0);
- mxf_write_local_tag(pb, 4, 0x3F07);
- put_be32(pb, 1);
- mxf_write_local_tag(pb, 4, 0x3F06);
- put_be32(pb, 2);
- return 0;
- }
- static int mxf_write_header_metadata_sets(AVFormatContext *s)
- {
- mxf_write_preface(s);
- mxf_write_identification(s);
- mxf_write_content_storage(s);
- mxf_write_package(s, MaterialPackage);
- mxf_write_package(s, SourcePackage);
- mxf_write_essence_container_data(s);
- return 0;
- }
- static unsigned klv_fill_size(uint64_t size)
- {
- unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
- if (pad < 17)
- return pad + KAG_SIZE;
- else
- return pad & (KAG_SIZE-1);
- }
- static int mxf_write_index_table_segment(AVFormatContext *s)
- {
- MXFContext *mxf = s->priv_data;
- ByteIOContext *pb = s->pb;
- int i, j, ret;
- int temporal_reordering = 0;
- int last_key_index = 0, key_index = 0;
- av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
- put_buffer(pb, index_table_segment_key, 16);
- ret = klv_encode_ber_length(pb, 109 + (s->nb_streams+1)*6 +
- mxf->edit_units_count*(11+mxf->slice_count*4));
-
- mxf_write_local_tag(pb, 16, 0x3C0A);
- mxf_write_uuid(pb, IndexTableSegment, 0);
-
- mxf_write_local_tag(pb, 8, 0x3F0B);
- put_be32(pb, mxf->time_base.num);
- put_be32(pb, mxf->time_base.den);
-
- mxf_write_local_tag(pb, 8, 0x3F0C);
- put_be64(pb, 0);
-
- mxf_write_local_tag(pb, 8, 0x3F0D);
- put_be64(pb, mxf->edit_units_count);
-
- mxf_write_local_tag(pb, 4, 0x3F05);
- put_be32(pb, 0);
-
- mxf_write_local_tag(pb, 4, 0x3F06);
- put_be32(pb, 2);
-
- mxf_write_local_tag(pb, 4, 0x3F07);
- put_be32(pb, 1);
-
- mxf_write_local_tag(pb, 1, 0x3F08);
- put_byte(pb, mxf->slice_count);
-
- mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
- put_be32(pb, s->nb_streams+1);
- put_be32(pb, 6);
-
- put_byte(pb, 0);
- put_byte(pb, 0);
- put_be32(pb, 0);
- for (i = 0; i < s->nb_streams; i++) {
- AVStream *st = s->streams[i];
- MXFStreamContext *sc = st->priv_data;
- put_byte(pb, sc->temporal_reordering);
- if (sc->temporal_reordering)
- temporal_reordering = 1;
-
- if (i == 0) {
- put_byte(pb, 0);
- put_be32(pb, KAG_SIZE);
- } else {
- unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
- audio_frame_size += klv_fill_size(audio_frame_size);
- put_byte(pb, 1);
- put_be32(pb, (i-1)*audio_frame_size);
- }
- }
- mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
- put_be32(pb, mxf->edit_units_count);
- put_be32(pb, 11+mxf->slice_count*4);
- for (i = 0; i < mxf->edit_units_count; i++) {
- if (temporal_reordering) {
- int temporal_offset = 0;
- for (j = i+1; j < mxf->edit_units_count; j++) {
- temporal_offset++;
- if (mxf->index_entries[j].flags & 0x10) {
-
- if (!(mxf->index_entries[i+1].flags & 0x10)) {
- if ((mxf->index_entries[i].flags & 0x11) == 0)
- temporal_offset = 0;
- else
- temporal_offset = -temporal_offset;
- }
- break;
- }
- }
- put_byte(pb, temporal_offset);
- } else
- put_byte(pb, 0);
- if (!(mxf->index_entries[i].flags & 0x33)) {
- last_key_index = key_index;
- key_index = i;
- }
- if (mxf->index_entries[i].flags & 0x10 &&
- !(mxf->index_entries[key_index].flags & 0x80)) {
- put_byte(pb, last_key_index - i);
- } else {
- put_byte(pb, key_index - i);
- if ((mxf->index_entries[i].flags & 0x20) == 0x20)
- last_key_index = key_index;
- }
- put_byte(pb, mxf->index_entries[i].flags);
-
- put_be64(pb, mxf->index_entries[i].offset - mxf->index_entries[0].offset);
- if (s->nb_streams > 1)
- put_be32(pb, mxf->index_entries[i].slice_offset);
- }
- return ret;
- }
- static void mxf_write_partition(AVFormatContext *s, int bodysid,
- int indexsid, unsigned index_byte_count,
- const uint8_t *key, int write_metadata)
- {
- MXFContext *mxf = s->priv_data;
- ByteIOContext *pb = s->pb;
- int64_t header_byte_count_offset;
-
- put_buffer(pb, key, 16);
- klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
-
- put_be16(pb, 1);
- put_be16(pb, 2);
- put_be32(pb, KAG_SIZE);
- put_be64(pb, url_ftell(pb) - 25);
- put_be64(pb, 0);
- put_be64(pb, mxf->footer_partition_offset);
-
- header_byte_count_offset = url_ftell(pb);
- put_be64(pb, 0);
-
- put_be64(pb, index_byte_count);
- put_be32(pb, indexsid);
- put_be64(pb, 0);
- put_be32(pb, bodysid);
- put_buffer(pb, op1a_ul, 16);
-
- mxf_write_essence_container_refs(s);
- if (write_metadata) {
-
- int64_t pos, start = url_ftell(s->pb);
- unsigned header_byte_count;
- mxf_write_primer_pack(s);
- mxf_write_header_metadata_sets(s);
- pos = url_ftell(s->pb);
- header_byte_count = pos - start + klv_fill_size(pos);
-
- url_fseek(pb, header_byte_count_offset, SEEK_SET);
- put_be64(pb, header_byte_count);
- url_fseek(pb, pos, SEEK_SET);
- }
- put_flush_packet(pb);
- }
- static const UID mxf_mpeg2_codec_uls[] = {
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 },
- { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 },
- };
- static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
- {
- if (avctx->profile == 4) {
- if (avctx->level == 8)
- return avctx->gop_size ?
- &mxf_mpeg2_codec_uls[1] :
- &mxf_mpeg2_codec_uls[0];
- else if (avctx->level == 4)
- return avctx->gop_size ?
- &mxf_mpeg2_codec_uls[5] :
- &mxf_mpeg2_codec_uls[4];
- } else if (avctx->profile == 0) {
- if (avctx->level == 5)
- return avctx->gop_size ?
- &mxf_mpeg2_codec_uls[3] :
- &mxf_mpeg2_codec_uls[2];
- else if (avctx->level == 2)
- return avctx->gop_size ?
- &mxf_mpeg2_codec_uls[7] :
- &mxf_mpeg2_codec_uls[6];
- }
- return NULL;
- }
- static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
- {
- MXFContext *mxf = s->priv_data;
- MXFStreamContext *sc = st->priv_data;
- uint32_t c = -1;
- int i;
- mxf->index_entries[mxf->edit_units_count].flags = 0;
- for(i = 0; i < pkt->size - 4; i++) {
- c = (c<<8) + pkt->data[i];
- if (c == 0x1B5) {
- if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) {
- st->codec->profile = pkt->data[i+1] & 0x07;
- st->codec->level = pkt->data[i+2] >> 4;
- } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) {
- sc->interlaced = !(pkt->data[i+5] & 0x80);
- break;
- }
- } else if (c == 0x1b8) {
- if (i + 4 < pkt->size && pkt->data[i+4]>>6 & 0x01)
- mxf->index_entries[mxf->edit_units_count].flags |= 0x80;
- } else if (c == 0x1b3) {
- mxf->index_entries[mxf->edit_units_count].flags |= 0x40;
- } else if (c == 0x100) {
- int pict_type = (pkt->data[i+2]>>3) & 0x07;
- if (pict_type == 2) {
- mxf->index_entries[mxf->edit_units_count].flags |= 0x22;
- st->codec->gop_size = 1;
- } else if (pict_type == 3) {
- mxf->index_entries[mxf->edit_units_count].flags |= 0x33;
- sc->temporal_reordering = -1;
- } else if (!pict_type) {
- av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
- return 0;
- }
- }
- }
- sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
- return !!sc->codec_ul;
- }
- static uint64_t mxf_parse_timestamp(time_t timestamp)
- {
- struct tm *time = localtime(×tamp);
- return (uint64_t)(time->tm_year+1900) << 48 |
- (uint64_t)(time->tm_mon+1) << 40 |
- (uint64_t) time->tm_mday << 32 |
- time->tm_hour << 24 |
- time->tm_min << 16 |
- time->tm_sec << 8;
- }
- static int mxf_write_header(AVFormatContext *s)
- {
- MXFContext *mxf = s->priv_data;
- int i;
- uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
- const int *samples_per_frame = NULL;
- if (s->nb_streams > 17) {
- av_log(s, AV_LOG_ERROR, "error, mxf muxer supports 17 tracks maximum\n");
- return -1;
- }
- for (i = 0; i < s->nb_streams; i++) {
- AVStream *st = s->streams[i];
- MXFStreamContext *sc = av_mallocz(sizeof(*sc));
- if (!sc)
- return AVERROR(ENOMEM);
- st->priv_data = sc;
- if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
- if (i != 0) {
- av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
- return -1;
- }
- if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
- samples_per_frame = PAL_samples_per_frame;
- mxf->time_base = (AVRational){ 1, 25 };
- } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
- samples_per_frame = NTSC_samples_per_frame;
- mxf->time_base = (AVRational){ 1001, 30000 };
- } else {
- av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
- return -1;
- }
- av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
- } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
- if (st->codec->sample_rate != 48000) {
- av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
- return -1;
- }
- av_set_pts_info(st, 64, 1, st->codec->sample_rate);
- mxf->slice_count = 1;
- }
- sc->duration = -1;
- sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
- if (sc->index == -1) {
- av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
- "codec not currently supported in container\n", i);
- return -1;
- }
- sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
- if (!present[sc->index]) {
- mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
- present[sc->index] = 1;
- } else
- present[sc->index]++;
- memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
- sc->track_essence_element_key[15] = present[sc->index];
- PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
- }
- for (i = 0; i < s->nb_streams; i++) {
- MXFStreamContext *sc = s->streams[i]->priv_data;
-
- sc->track_essence_element_key[13] = present[sc->index];
- sc->order = AV_RB32(sc->track_essence_element_key+12);
- }
- mxf->timestamp = mxf_parse_timestamp(s->timestamp);
- if (!samples_per_frame)
- samples_per_frame = PAL_samples_per_frame;
- if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
- return -1;
- return 0;
- }
- static void mxf_write_klv_fill(AVFormatContext *s)
- {
- unsigned pad = klv_fill_size(url_ftell(s->pb));
- if (pad) {
- put_buffer(s->pb, klv_fill_key, 16);
- pad -= 16;
- pad -= klv_ber_length(pad);
- klv_encode_ber_length(s->pb, pad);
- for (; pad > 7; pad -= 8)
- put_be64(s->pb, 0);
- for (; pad; pad--)
- put_byte(s->pb, 0);
- assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
- }
- }
- static const uint8_t system_metadata_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
- static const uint8_t system_metadata_package_set_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x43,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x02,0x01 };
- static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
- {
- return (0 << 31) |
- (0 << 30) |
- ( ((frame % fps) / 10) << 28) |
- ( ((frame % fps) % 10) << 24) |
- (0 << 23) |
- ((((frame / fps) % 60) / 10) << 20) |
- ((((frame / fps) % 60) % 10) << 16) |
- (0 << 15) |
- ((((frame / (fps * 60)) % 60) / 10) << 12) |
- ((((frame / (fps * 60)) % 60) % 10) << 8) |
- (0 << 7) |
- (0 << 6) |
- ((((frame / (fps * 3600) % 24)) / 10) << 4) |
- ( (frame / (fps * 3600) % 24)) % 10;
- }
- static void mxf_write_system_item(AVFormatContext *s)
- {
- MXFContext *mxf = s->priv_data;
- ByteIOContext *pb = s->pb;
- unsigned fps, frame;
- uint32_t time_code;
- frame = mxf->edit_units_count;
-
- put_buffer(pb, system_metadata_pack_key, 16);
- klv_encode_ber_length(pb, 57);
- put_byte(pb, 0x5c);
- put_byte(pb, 0x04);
- put_byte(pb, 0x00);
- put_be16(pb, 0x00);
- put_be16(pb, frame);
- if (mxf->essence_container_count > 1)
- put_buffer(pb, multiple_desc_ul, 16);
- else
- put_buffer(pb, mxf_essence_container_uls[mxf->essence_containers_indices[0]].container_ul, 16);
- put_byte(pb, 0);
- put_be64(pb, 0);
- put_be64(pb, 0);
-
- if (mxf->time_base.den == 30000) fps = 30;
- else fps = 25;
- put_byte(pb, 0x81);
- time_code = ff_framenum_to_12m_time_code(frame, 0, fps);
- put_be32(pb, time_code);
- put_be32(pb, 0);
- put_be64(pb, 0);
-
- put_buffer(pb, system_metadata_package_set_key, 16);
- klv_encode_ber_length(pb, 35);
- put_byte(pb, 0x83);
- put_be16(pb, 0x20);
- mxf_write_umid(pb, SourcePackage, 0);
- }
- static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
- {
- MXFContext *mxf = s->priv_data;
- ByteIOContext *pb = s->pb;
- AVStream *st = s->streams[pkt->stream_index];
- MXFStreamContext *sc = st->priv_data;
- if (!(mxf->edit_units_count % MXF_INDEX_CLUSTER_SIZE)) {
- mxf->index_entries = av_realloc(mxf->index_entries,
- (mxf->edit_units_count + MXF_INDEX_CLUSTER_SIZE)*
- sizeof(*mxf->index_entries));
- if (!mxf->index_entries) {
- av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
- return -1;
- }
- }
- if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
- if (!mxf_parse_mpeg2_frame(s, st, pkt)) {
- av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
- return -1;
- }
- }
- if (!mxf->header_written) {
- mxf_write_partition(s, 1, 0, 0, header_open_partition_key, 1);
- mxf->header_written = 1;
- }
- mxf_write_klv_fill(s);
- if (st->index == 0) {
- mxf->index_entries[mxf->edit_units_count].offset = url_ftell(pb);
- mxf_write_system_item(s);
- mxf_write_klv_fill(s);
- mxf->edit_units_count++;
- } else if (st->index == 1) {
- mxf->index_entries[mxf->edit_units_count-1].slice_offset =
- url_ftell(pb) - mxf->index_entries[mxf->edit_units_count-1].offset;
- }
- put_buffer(pb, sc->track_essence_element_key, 16);
- klv_encode_ber_length(pb, pkt->size);
- put_buffer(pb, pkt->data, pkt->size);
- sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
- put_flush_packet(pb);
- return 0;
- }
- static void mxf_write_random_index_pack(AVFormatContext *s)
- {
- MXFContext *mxf = s->priv_data;
- ByteIOContext *pb = s->pb;
- uint64_t pos = url_ftell(pb);
- put_buffer(pb, random_index_pack_key, 16);
- klv_encode_ber_length(pb, 28);
- put_be32(pb, 1);
- put_be64(pb, 0);
- put_be32(pb, 0);
- put_be64(pb, mxf->footer_partition_offset);
- put_be32(pb, url_ftell(pb) - pos + 4);
- }
- static int mxf_write_footer(AVFormatContext *s)
- {
- MXFContext *mxf = s->priv_data;
- ByteIOContext *pb = s->pb;
- unsigned index_byte_count =
- 109 + (s->nb_streams+1)*6 +
- mxf->edit_units_count*(11+mxf->slice_count*4);
-
- index_byte_count += 16 + klv_ber_length(index_byte_count);
- mxf_write_klv_fill(s);
- mxf->footer_partition_offset = url_ftell(pb);
- mxf_write_partition(s, 0, 2, index_byte_count, footer_partition_key, 0);
- mxf_write_index_table_segment(s);
- mxf_write_random_index_pack(s);
- if (!url_is_streamed(s->pb)) {
- url_fseek(pb, 0, SEEK_SET);
- mxf_write_partition(s, 1, 0, 0, header_closed_partition_key, 1);
- }
- ff_audio_interleave_close(s);
- mxf_free(s);
- return 0;
- }
- static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
- {
- AVPacketList *pktl;
- int stream_count = 0;
- int streams[MAX_STREAMS];
- memset(streams, 0, sizeof(streams));
- pktl = s->packet_buffer;
- while (pktl) {
-
- if (!streams[pktl->pkt.stream_index])
- stream_count++;
- streams[pktl->pkt.stream_index]++;
- pktl = pktl->next;
- }
- if (stream_count && (s->nb_streams == stream_count || flush)) {
- pktl = s->packet_buffer;
- if (s->nb_streams != stream_count) {
- AVPacketList *first = NULL;
-
- while (pktl) {
- AVStream *st = s->streams[pktl->pkt.stream_index];
- if (st->index == 0)
- break;
- else if (!first)
- first = pktl;
- pktl = pktl->next;
- }
-
- while (pktl) {
- AVPacketList *next = pktl->next;
- av_free_packet(&pktl->pkt);
- av_freep(&pktl);
- pktl = next;
- }
- if (!first)
- goto out;
- pktl = first;
- }
- *out = pktl->pkt;
-
- s->packet_buffer = pktl->next;
- av_freep(&pktl);
- return 1;
- } else {
- out:
- av_init_packet(out);
- return 0;
- }
- }
- static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
- {
- MXFStreamContext *sc = s->streams[pkt ->stream_index]->priv_data;
- MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
- return next->dts > pkt->dts ||
- (next->dts == pkt->dts && sc->order < sc2->order);
- }
- static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
- {
- return ff_audio_interleave(s, out, pkt, flush,
- mxf_interleave_get_packet, mxf_compare_timestamps);
- }
- AVOutputFormat mxf_muxer = {
- "mxf",
- NULL_IF_CONFIG_SMALL("Material eXchange Format"),
- NULL,
- "mxf",
- sizeof(MXFContext),
- CODEC_ID_PCM_S16LE,
- CODEC_ID_MPEG2VIDEO,
- mxf_write_header,
- mxf_write_packet,
- mxf_write_footer,
- AVFMT_NOTIMESTAMPS,
- NULL,
- mxf_interleave,
- };
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