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TAV: more documentation

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minjaesong
2025-09-25 18:27:46 +09:00
parent 4d9981ec23
commit efab1c3a88
1 changed files with 16 additions and 5 deletions
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terranmon.txt
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@@ -898,6 +898,7 @@ transmission capability, and region-of-interest coding.
uint16 Height: video height in pixels uint16 Height: video height in pixels
uint8 FPS: frames per second. Use 0x00 for still images uint8 FPS: frames per second. Use 0x00 for still images
uint32 Total Frames: number of video frames. Use 0xFFFFFFFF to denote still image (.im3 file) uint32 Total Frames: number of video frames. Use 0xFFFFFFFF to denote still image (.im3 file)
- frame count of 0 is used to denote not-finalised video stream
uint8 Wavelet Filter Type/File Role: uint8 Wavelet Filter Type/File Role:
- 0 = 5/3 reversible - 0 = 5/3 reversible
- 1 = 9/7 irreversible - 1 = 9/7 irreversible
@@ -951,14 +952,24 @@ note: metadata packets must precede any non-metadata packets
## Block Data (per frame) ## Block Data (per frame)
uint8 Mode: encoding mode uint8 Mode: encoding mode
0x00 = SKIP (copy from previous frame) 0x00 = SKIP (copy from previous frame)
0x01 = INTRA (DWT-coded) 0x01 = INTRA (DWT-coded)
0x02 = DELTA (DWT delta) 0x02 = DELTA (DWT delta)
uint8 Quantiser override Y (use 0 to disable overriding) uint8 Quantiser override Y (use 0 to disable overriding; shared with A channel)
uint8 Quantiser override Co (use 0 to disable overriding) uint8 Quantiser override Co (use 0 to disable overriding)
uint8 Quantiser override Cg (use 0 to disable overriding) uint8 Quantiser override Cg (use 0 to disable overriding)
int16 Y channel DWT coefficients[width * height + 4]
int16 Co channel DWT coefficients[width * height + 4]
int16 Cg channel DWT coefficients[width * height + 4]
int16 A channel DWT coefficients[width * height + 4] (only when the video has alpha)
## DWT Coefficient Structure (per tile) <for legacy non-monoblock format>
int16 Y channel DWT coefficients[tile width * tile height + 4]
int16 Co channel DWT coefficients[tile width * tile height + 4]
int16 Cg channel DWT coefficients[tile width * tile height + 4]
... (repeated per tile)
### DWT Coefficient Structure (per tile)
For each decomposition level L (from highest to lowest): For each decomposition level L (from highest to lowest):
uint16 LL_size: size of LL subband coefficients uint16 LL_size: size of LL subband coefficients
uint16 LH_size: size of LH subband coefficients uint16 LH_size: size of LH subband coefficients