Difference between revisions of "MGV"
From MSX Game Library
| Line 24: | Line 24: | ||
└──┴──────────────────── Bit per pixel (0: 1-bit, 1: 2-bit, 2: 4-bit, 3: 8-bit) | └──┴──────────────────── Bit per pixel (0: 1-bit, 1: 2-bit, 2: 4-bit, 3: 8-bit) | ||
Screen mode: | Screen mode: | ||
| − | * 0: Text 1 (40x27) | + | * 0: Text 1 (Screen 0 width 40, 40x27) |
| − | * 1: Graphic 1 (32x27) | + | * 1: Graphic 1 (Screen 1, 32x27) |
| − | * 2: Graphic 2 (32x27) | + | * 2: Graphic 2 (Screen 2, 32x27) |
| − | * 3: Multi Color (64x53) | + | * 3: Multi Color (Screen 3, 64x53) |
| − | * 4: Text 2 (80x27) | + | * 4: Text 2 (Screen 0 width 80, 80x27) |
| − | * 5: Graphic 3 (32x27) | + | * 5: Graphic 3 (Screen 4, 32x27) |
| − | * 6: Graphic 4 (256x212 16 colors) | + | * 6: Graphic 4 (Screen 5, 256x212, 16 colors) |
| − | * 7: Graphic 5 (512x212 4 colors) | + | * 7: Graphic 5 (Screen 6, 512x212, 4 colors) |
| − | * 6: Graphic 6 (512x212 16 colors) | + | * 6: Graphic 6 (Screen 7, 512x212, 16 colors) |
| − | * 7: Graphic 7 (256x212 256 colors) | + | * 7: Graphic 7 (Screen 8, 256x212, 256 colors) |
| − | * 8: Graphic 3 mirrored (undocumented) | + | * 7: Graphic 7 + YJK + YAE (Screen 10, 256x212, X colors) |
| + | * 7: Graphic 7 + YJK (Screen 16, 256x212, X colors) | ||
| + | * 8: Graphic 3 mirrored 0000 (undocumented) | ||
| + | * 9: Graphic 3 mirrored 0101 (undocumented) | ||
| + | * 10: Graphic 3 mirrored 0022 (undocumented) | ||
|- | |- | ||
| (0x0005) || 1 || Video format - Replay | | (0x0005) || 1 || Video format - Replay | ||
Revision as of 00:36, 31 March 2024
MGLV is a video format for MSXgl.
Contents
Format
Header
| Offset | Size | Desc. | Value |
|---|---|---|---|
| 0x0000 | 3 | Signature | "MGV" |
| 0x0003 | 1 | Flag |
7 6 5 4 3 2 1 0 │ │ └──┴──┴──┴── File format version (0-15) │ └────────────── Segment size (0: 8 KB, 1: 16 KB) └─────────────────────── Include video format data (4 bytes) |
| (0x0004) | 1 | Video format - Image |
7 6 5 4 3 2 1 0 │ │ └──┴──┴──┴── Screen mode (0-15) └──┴──────────────────── Bit per pixel (0: 1-bit, 1: 2-bit, 2: 4-bit, 3: 8-bit) Screen mode:
|
| (0x0005) | 1 | Video format - Replay |
7 6 5 4 3 2 1 0 │ │ └──┴──┴──┴── Frame skip (0-15) │ └──────────────────── Loop (0: No, 1: Yes) └─────────────────────── Frequency (0: 50 Hz, 1: 60 Hz) |
| (0x0006) | 1 | Video format - Width | 1-256 |
| (0x0007) | 1 | Video format - Height | 1-256 |
Commands
| Cmd | Options | Desc. |
|---|---|---|
| 00 | End of data | |
| 01 | End of line | |
| 02 | ||
| 03 | End of segment (increment segment index and reset data pointer) | |
| n4 | Skip n bytes (1-16) | |
| 05 | nn | Skip nn bytes (1-256) |
| 06 | nnnn | Skip nnnn bytes (1-65536) |
| 07 | Skip a frame / End of frame | |
| n8 | vv | Fill n bytes (1-256) with vv value |
| 09 | vv,nn | Fill nn bytes (1-256) with vv value |
| 0A | vv,nnnn | Fill nnnn bytes (1-65536) with vv value |
| 0B | vv | Fill a full frame with vv value |
| nC | vv[n] | Copy n bytes (1-256) from vv[n] data table |
| 0D | nn,vv[nn] | Copy nn bytes (1-256) from vv[nn] data table |
| 0E | nnnn,vv[nnnn] | Copy nnnn bytes (1-65536) from vv[nnnn] data table |
| 0F | vv[] | Copy a full frame from data table (raw frame) |
Extension
.MGLV (for Windows/Linux) or .MGV (for MSX-DOS)