winamp/Src/nsmkv/Cluster.h
2024-09-24 14:54:57 +02:00

106 lines
2.2 KiB
C++

#pragma once
#include "mkv_reader.h"
#include <bfc/platform/types.h>
const uint32_t mkv_segment_cluster = 0xf43b675;
const uint32_t mkv_cluster_timecode = 0x67;
const uint32_t mkv_cluster_blockgroup = 0x20;
const uint32_t mkv_cluster_simpleblock = 0x23;
const uint32_t mkv_blockgroup_referenceblock = 0x7b;
const uint32_t mkv_blockgroup_block = 0x21;
const uint32_t mkv_blockgroup_blockduration = 0x1b;
/* TODO: benski>
need to think this whole thing through.
Ideally, we would be able to enumerate through the clusters/blocks,
but the output plugin might have a different audio buffer size
than the size that the encoder assumed.
so the first attempt is going to be random access
and we'll see if there is a better way after implementation
*/
namespace nsmkv
{
class BlockBinary
{
public:
BlockBinary()
{
data=0;
data_size=0;
track_number=0;
flags=0;
time_code=0;
}
~BlockBinary()
{
free(data);
}
uint64_t track_number;
int16_t time_code;
uint8_t flags;
size_t data_size;
void *data; // maybe optionally allow the user to pass in the buffer to reduce mallocs
enum
{
LACE_MASK = 0x6,
XIPH_LACING= 0x2,
FIXED_LACING = 0x4,
EBML_LACING = 0x6,
NO_LACING = 0x0,
};
};
class Block
{
public:
Block()
#ifdef WA_VALIDATE
:
reference_block_found(false),
block_duration_found(false)
#endif
{
reference_block=0;
block_duration=0;
}
BlockBinary binary;
uint64_t reference_block;
uint64_t block_duration;
#ifdef WA_VALIDATE
bool reference_block_found;
bool block_duration_found;
#endif
};
class Cluster
{
public:
Cluster()
#ifdef WA_VALIDATE
:
time_code_found(false)
#endif
{
time_code = 0;
position = 0;
previous_size = 0;
}
uint64_t time_code;
uint64_t position;
uint64_t previous_size;
#ifdef WA_VALIDATE
bool time_code_found;
#endif
};
class Clusters
{
};
uint64_t ReadCluster(MKVReader *reader, uint64_t size, nsmkv::Cluster &cluster);
uint64_t ReadBlockBinary(MKVReader *reader, uint64_t size, nsmkv::BlockBinary &binary, uint64_t *allowed_track_numbers, size_t num_allowed_track_numbers);
uint64_t ReadBlockGroup(MKVReader *reader, uint64_t size, nsmkv::Block &block, uint64_t *allowed_track_numbers, size_t num_allowed_track_numbers);
}