Difference between revisions of "MGV"
From MSX Game Library
| Line 18: | Line 18: | ||
│ │ └───────────────── | │ │ └───────────────── | ||
│ └──────────────────── | │ └──────────────────── | ||
| − | └─────────────────────── Include video format data ( | + | └─────────────────────── Include video format data (4 bytes) |
|- | |- | ||
| (0x0005) || 1 || Video format - Mode | | (0x0005) || 1 || Video format - Mode | ||
| Line 25: | Line 25: | ||
│ │ │ │ └──┴──┴──┴── Screen mode | │ │ │ │ └──┴──┴──┴── Screen mode | ||
│ │ └──┴────────────── 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: | ||
| Line 40: | Line 40: | ||
* 8: Graphic 3 mirrored (undocumented) | * 8: Graphic 3 mirrored (undocumented) | ||
|- | |- | ||
| − | | (0x0006) || 1 || Video format - Width || 1-256 | + | | (0x0006) || 1 || Video format - Speed |
| + | | | ||
| + | 7 6 5 4 3 2 1 0 | ||
| + | │ │ │ │ └──┴──┴──┴── Frame delay (1-16) | ||
| + | │ │ │ └────────────── | ||
| + | │ │ └───────────────── | ||
| + | │ └──────────────────── | ||
| + | └─────────────────────── Frequency (0: 50 Hz, 1: 60 Hz) | ||
| + | |- | ||
| + | | (0x0007) || 1 || Video format - Width || 1-256 | ||
|- | |- | ||
| − | | ( | + | | (0x0008) || 1 || Video format - Height || 1-256 |
|} | |} | ||
Revision as of 23:45, 30 March 2024
MGLV is a video format for MSXgl.
Contents
Format
Header
| Offset | Size | Desc. | Value |
|---|---|---|---|
| 0x0000 | 4 | Signature | "MGLV" |
| 0x0004 | 1 | Flag |
7 6 5 4 3 2 1 0 │ │ │ │ └──┴──┴──┴── File format version (0-15) │ │ │ └────────────── │ │ └───────────────── │ └──────────────────── └─────────────────────── Include video format data (4 bytes) |
| (0x0005) | 1 | Video format - Mode |
7 6 5 4 3 2 1 0 │ │ │ │ └──┴──┴──┴── Screen mode │ │ └──┴────────────── Bit per pixel (0: 1-bit, 1: 2-bit, 2: 4-bit, 3: 8-bit) │ └──────────────────── └─────────────────────── Screen mode:
|
| (0x0006) | 1 | Video format - Speed |
7 6 5 4 3 2 1 0 │ │ │ │ └──┴──┴──┴── Frame delay (1-16) │ │ │ └────────────── │ │ └───────────────── │ └──────────────────── └─────────────────────── Frequency (0: 50 Hz, 1: 60 Hz) |
| (0x0007) | 1 | Video format - Width | 1-256 |
| (0x0008) | 1 | Video format - Height | 1-256 |
Commands
| Cmd | Options | Desc. |
|---|---|---|
| 0x00 | End of data | |
| 0x01 | End of frame | |
| 0x02 | End of segment (increment segment index and reset data pointer) | |
| 0x03 | ||
| 0x04 | nn | Skip nn+1 bytes (1-256) |
| 0x05 | nnnn | Skip nnnn bytes (1-65536) |
| 0x06 | nn,vv | Fill nn bytes (1-256) with vv value |
| 0x07 | nnnn,vv | Fill nnnn bytes (1-65536) with vv value |
| 0x08 | nn,vv[nn] | Copy nn bytes (1-256) from vv[nn] data table |
| 0x09 | nnnn,vv[nnnn] | Copy nnnn bytes (1-65536) from vv[nnnn] data table |
| 0x0A | ||
| 0x0B | ||
| 0x0C | vv | Fill full frame with vv value |
| 0x0D | ||
| 0x0E | ||
| 0x0F |
Extension
.MGLV (for Windows/Linux) or .MGV (for MSX-DOS)