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Ok-ed parts from patch by zhentan feng.
Originally committed as revision 14827 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -31,9 +31,55 @@
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//#define DEBUG
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#include "mxf.h"
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typedef struct {
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int local_tag;
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UID uid;
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} MXFLocalTagPair;
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static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
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static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x0F,0x00,0x13,0x00,0x00,0x00 };
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/**
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* complete key for operation pattern, partitions, and primer pack
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*/
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static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
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static const uint8_t header_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete
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static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
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static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
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static void mxf_write_uuid(ByteIOContext *pb, enum CodecID type, int value)
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{
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put_buffer(pb, uuid_base, 12);
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put_be16(pb, type);
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put_be16(pb, value);
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}
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static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
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{
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// Determine the best BER size
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int size;
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if (len < 128) {
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//short form
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put_byte(pb, len);
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return 1;
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}
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size = (av_log2(len) >> 3) + 1;
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// long form
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put_byte(pb, 0x80 + size);
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while(size) {
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size --;
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put_byte(pb, len >> 8 * size & 0xff);
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}
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return 0;
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}
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static const MXFCodecUL *mxf_get_essence_container_ul(enum CodecID type)
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{
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const MXFCodecUL *uls = mxf_essence_container_uls;
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const MXFCodecUL *uls = ff_mxf_essence_container_uls;
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while (uls->id != CODEC_ID_NONE) {
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if (uls->id == type)
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break;
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@ -42,29 +88,48 @@ 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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{
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ByteIOContext *pb = s->pb;
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int local_tag_number, i = 0;
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local_tag_number = sizeof(mxf_local_tag_batch) / sizeof(MXFLocalTagPair);
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put_buffer(pb, primer_pack_key, 16);
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klv_encode_ber_length(pb, local_tag_number * 18 + 8);
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put_be32(pb, local_tag_number); // local_tag num
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put_be32(pb, 18); // item size, always 18 according to the specs
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for (i = 0; i < local_tag_number; i++) {
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put_be16(pb, mxf_local_tag_batch[i].local_tag);
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put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
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}
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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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{
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put_be16(pb, tag);
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put_be16(pb, value_size);
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}
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static void mxf_free(AVFormatContext *s)
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{
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MXFContext *mxf = s->priv_data;
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AVStream *st;
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int i;
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av_freep(&mxf->reference.identification);
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av_freep(mxf->reference.package);
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av_freep(&mxf->reference.package);
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av_freep(&mxf->reference.content_storage);
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for (i = 0; i < s->nb_streams; i++) {
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st = s->streams[i];
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av_freep(&st->priv_data);
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}
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av_freep(mxf->reference.sub_desc);
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av_freep(&mxf->reference.sub_desc);
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av_freep(&mxf->reference.mul_desc);
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av_freep(&mxf->essence_container_uls);
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}
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static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
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{
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const MXFDataDefinitionUL *uls = mxf_data_definition_uls;
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const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
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while (uls->type != CODEC_TYPE_DATA) {
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if (type == uls->type)
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break;
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