92 lines
2.1 KiB
Markdown
92 lines
2.1 KiB
Markdown
# Loading a BS still image
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You need [mkpsxiso](https://github.com/Lameguy64/mkpsxiso) in your $PATH to generate a PSX disk image.
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## Compile
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```bash
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make all
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```
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## Clean directory
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```bash
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make cleansub
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```
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## Converting a still image to BS
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`MC32` can convert these formats to BS : TIM, RGB, YUV.
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### Image > TIM with img2tim
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Convert your image to a 24bpp TIM with [`img2tim`](https://github.com/Lameguy64/img2tim):
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```bash
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img2tim -bpp 24 -o output.tim input.png
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```
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Then use `MC32` as instructed below.
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Result :
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```bash
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identify bace.tim
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bace.tim TIM 320x240 320x240+0+0 8-bit sRGB 230420B 0.000u 0:00.000
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```
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### Image > RGB with imagemagick
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You can convert your image to RGB with:
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```bash
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convert input.png RGB:output.rgb
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```
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Result :
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```bash
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identify -size 320x240 -depth 8 RGB:bace.rgb
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RGB:bace.rgb=>bace.rgb RGB 320x240 320x240+0+0 8-bit sRGB 230400B 0.000u 0:00.003
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```
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### Image > YUV422 UYVY with imagemagick
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You can convert your image to YUV with:
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```bash
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convert input.png UYVY:output.yuv
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```
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Result :
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```bash
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dentify -size 320x240 UYVY:bace.yuv
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UYVY:bace.yuv=>bace.yuv UYVY 320x240 320x240+0+0 8-bit YCbCr 153600B 0.000u 0:00.005
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```
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### TIM/RGB/UYVY > BS conversion
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Use the [`MC32` tool](http://psx.arthus.net/tools/pimp-psx.zip) conversion tool to import the image, specifying the right dimensions, and convert to `bs` with those settings :
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**Note that a BS image must have a width and height that is a multiple of 16**
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```
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Input: RGB, Output: bs
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MDEC version : 2
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Custom: Size in sectors or (2048 * sector number) bytes, Variable frame size
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```
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## Sources & Refs
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img2tim : https://github.com/Lameguy64/img2tim
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MC32 : http://psx.arthus.net/tools/pimp-psx.zip
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mdecnote : http://psx.arthus.net/sdk/Psy-Q/DOCS/TECHNOTE/mdecnote.pdf
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PSX RGB and YUV format : http://psx.arthus.net/sdk/Psy-Q/DOCS/Devrefs/Dataconv.pdf , p.68
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YUV pixel format : https://www.fourcc.org/pixel-format/yuv-uyvy/
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RGB pixelformat : https://www.fourcc.org/pixel-format/rgb-bi_rgb/
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RGB<>YUV conversion formulas : https://www.fourcc.org/fccyvrgb.php
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