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doc update

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minjaesong
2024-08-14 01:40:33 +09:00
parent adae75ab69
commit dcda35fc67
2 changed files with 39 additions and 28 deletions
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6
assets/disk0/tvdos/bin/playmov.js
View File

@@ -47,7 +47,7 @@ let fps = seqread.readShort(); if (fps == 0) fps = 9999
const FRAME_TIME = 1.0 / fps
const FRAME_COUNT = seqread.readInt() % 16777216
const globalType = seqread.readShort()
seqread.readShort() // skip unused field
const audioQueueInfo = seqread.readShort()
const AUDIO_QUEUE_LENGTH = (audioQueueInfo >> 12) + 1
const AUDIO_QUEUE_BYTES = (audioQueueInfo & 0xFFF) << 2
@@ -62,10 +62,6 @@ let framesRendered = 0
printerrln("Not an iPF mov")
return 1
}*/
if (globalType != 255) {
printerrln(`Unsupported MOV type (${globalType})`)
return 1
}
let ipfbuf = sys.malloc(FBUF_SIZE)
graphics.setGraphicsMode(4)

61
terranmon.txt
View File

@@ -376,7 +376,7 @@ METADATA -
uint16 HEIGHT
uint16 FPS (0: play as fast as can)
uint32 NUMBER OF FRAMES
uint16 GLOBAL PACKET TYPE (will be deprecated; please use 255,0)
uint16 UNUSED (fill with 255,0)
uint16 AUDIO QUEUE INFO
when read as little endian:
0b nnnn bbbb bbbb bbbb
@@ -399,7 +399,6 @@ Packet Types -
18,0: Series of PNGs
20,0: Series of TGAs
21,0: Series of TGA/GZs
255,0: Every frame specifies the type
<audio>
0,16: Raw PCM Stereo
1,16: Raw PCM Mono
@@ -411,6 +410,7 @@ Packet Types -
Packet Type High Byte (iPF Type Numbers)
0..7: iPF Type 1..8
128..135: Patch-encoded iPF Type 1..8
- MP2 Format Details
Rate | 2ch | 1ch
@@ -438,26 +438,39 @@ Packet Types -
-b:a : 256k is recommended for high quality audio (trust me, you don't need 384k)
-ar 32000 : resample the audio to 32kHz, the sampling rate of the TSVM soundcard
GLOBAL TYPE 0 Packet -
TYPE 0 Packet -
uint32 SIZE OF FRAMEDATA
* COMPRESSED FRAMEDATA
GLOBAL TYPE 1 Packet -
TYPE 1 Packet -
byte[512] Palette Data
uint32 SIZE OF FRAMEDATA
* COMPRESSED FRAMEDATA
GLOBAL TYPE 2 Packet -
TYPE 2 Packet -
uint32 SIZE OF FRAMEDATA BYTE-PLANE 1
* COMPRESSED FRAMEDATA
uint32 SIZE OF FRAMEDATA BYTE-PLANE 2
* COMPRESSED FRAMEDATA
GLOBAL iPF Packet -
iPF Packet -
uint32 SIZE OF FRAMEDATA
* COMPRESSED FRAMEDATA // only the actual gzip (and no UNCOMPRESSED SIZE) of the "Blocks.gz" is stored
GLOBAL TYPE 16+ Packet -
Patch-encoded iPF Packet -
uint8 X-coord of the patch (pixel position divided by four)
uint8 Y-coord of the patch (pixel position divided by four)
uint8 width of the patch (size divided by four)
uint8 height of the patch (size divided by four)
(calculating size)
(iPF1 no alpha: width * height * 12)
(iPF1 with alpha: width * height * 20)
(iPF2 no alpha: width * height * 16)
(iPF2 with alpha: width * height * 24)
* COMPRESSED FRAMEDATA // only the actual gzip (and no UNCOMPRESSED SIZE) of the "Blocks.gz" is stored
TYPE 16+ Packet -
uint32 SIZE OF FRAMEDATA BYTE-PLANE 1
* FRAMEDATA (COMPRESSED for TGA/GZ)
@@ -465,11 +478,6 @@ MP2 Packet & ADPCM Packet -
uint16 TYPE OF PACKET // follows the Metadata Packet Type scheme
* MP2 FRAME/ADPCM BLOCK
GLOBAL TYPE 255 Packet -
uint16 TYPE OF PACKET // follows the Metadata Packet Type scheme
uint32 SIZE OF PACKET
* FRAMEDATA or PACKET
Sync Packet (subset of GLOBAL TYPE 255 Packet) -
uint16 0xFFFF (type of packet for Global Type 255)
@@ -519,7 +527,6 @@ Image is divided into 4x4 blocks and each block is serialised, then the entire i
uint8 iPF Type/Colour Mode
0: Type 1 (4:2:0 chroma subsampling; 2048 colours?)
1: Type 2 (4:2:2 chroma subsampling; 2048 colours?)
16: Type 16 (full RGBA4444; 4096 colours)
byte[10] RESERVED
uint32 UNCOMPRESSED SIZE (somewhat redundant but included for convenience)
@@ -530,21 +537,29 @@ Image is divided into 4x4 blocks and each block is serialised, then the entire i
Y plane is quantised to 4 bits
By doing so, CoCg planes will reduce to 4 pixels
For the description of packing, pixels in Y plane will be numbered as:
0 1 2 3
4 5 6 7
8 9 A B
C D E F
For the description of packing, pixels in Y/Cx plane will be numbered as:
Y0 Y1 Y2 Y3 || Cx1 Cx2 | Cx1 Cx2
Y4 Y5 Y6 Y7 || (iPF 1) | Cx3 Cx4
Y8 Y9 YA YB || Cx3 Cx4 | Cx5 Cx6
YC YD YE YF || (iPF 1) | Cx7 Cx8
Bits are packed like so:
uint8 [Cg-Top Left | Co-Top Left]
iPF1:
uint16 [Co4 | Co3 | Co2 | Co1]
uint16 [Cg4 | Cg3 | Cg2 | Cg1]
uint16 [Y1 | Y0 | Y5 | Y4]
uint16 [Y3 | Y2 | Y7 | Y6]
uint16 [Y9 | Y8 | YD | YC]
uint16 [YB | YA | YF | YE]
(total: 12 bytes)
iPF2:
uint32 [Co8 | Co7 | Co6 | Co5 | Co4 | Co3 | Co2 | Co1]
uint32 [Cg8 | Cg7 | Cg6 | Cg5 | Cg4 | Cg3 | Cg2 | Cg1]
uint16 [Y1 | Y0 | Y5 | Y4]
uint8 [Cg-Top Right | Co-Top Right]
uint16 [Y3 | Y2 | Y7 | Y6]
uint8 [Cg-Bottom Left | Co-Bottom Left]
uint16 [Y9 | Y8 | YD | YC]
uint8 [Cg-Bottom Right | Co-Bottom Right]
uint16 [YB | YA | YF | YE]
(total: 16 bytes)
@@ -553,7 +568,7 @@ Image is divided into 4x4 blocks and each block is serialised, then the entire i
uint16 [a3 | a2 | a7 | a6]
uint16 [a9 | a8 | aD | aC]
uint16 [aB | aA | aF | aE]
(total: 24 bytes)
(total: 20/24 bytes)
Subsampling mask: