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CDROM: Implement GetlocP/GetlocL commands

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This commit is contained in:
Connor McLaughlin
2019-10-04 19:05:19 +10:00
parent bbe1fc062f
commit 0b46a8cfc4
3 changed files with 98 additions and 62 deletions
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44
src/common/cd_image.h
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@ -1,4 +1,5 @@
#pragma once
#include "bitfield.h"
#include "types.h"
class ByteStream;
@ -14,6 +15,8 @@ public:
RAW_SECTOR_SIZE = 2352,
DATA_SECTOR_SIZE = 2048,
SECTOR_SYNC_SIZE = 12,
SECTOR_HEADER_SIZE = 4,
SECTOR_XA_SUBHEADER_SIZE = 4,
FRAMES_PER_SECOND = 75, // "sectors"
SECONDS_PER_MINUTE = 60,
FRAMES_PER_MINUTE = FRAMES_PER_SECOND * SECONDS_PER_MINUTE,
@ -21,9 +24,44 @@ public:
enum class ReadMode : u32
{
DataOnly, // 2048 bytes per sector.
RawSector, // 2352 bytes per sector.
RawNoSync, // 2340 bytes per sector.
DataOnly, // 2048 bytes per sector.
RawSector, // 2352 bytes per sector.
RawNoSync, // 2340 bytes per sector.
};
struct SectorHeader
{
u8 minute;
u8 second;
u8 frame;
u8 sector_mode;
};
struct XASubHeader
{
u8 file_number;
u8 channel_number;
union Submode
{
u8 bits;
BitField<u8, bool, 0, 1> eor;
BitField<u8, bool, 1, 1> video;
BitField<u8, bool, 2, 1> audio;
BitField<u8, bool, 3, 1> data;
BitField<u8, bool, 4, 1> trigger;
BitField<u8, bool, 5, 1> form2;
BitField<u8, bool, 6, 1> realtime;
BitField<u8, bool, 7, 1> eof;
} submode;
union Codinginfo
{
u8 bits;
BitField<u8, u8, 0, 2> mono_stereo;
BitField<u8, u8, 2, 2> sample_rate;
BitField<u8, u8, 4, 2> bits_per_sample;
BitField<u8, bool, 6, 1> emphasis;
} codinginfo;
};
// Conversion helpers.