mirror of
https://github.com/Rockbox/rockbox.git
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142a6fbb39
Both decoders treated every 3-component image as YCbCr, so RGB JPEGs (as written by cjpeg -rgb, and by some Adobe software) came out with wrong colours. Decide the colour space as libjpeg does: a JFIF marker means YCbCr; otherwise the transform flag of an Adobe APP14 marker decides (0 is RGB); otherwise component IDs 'R', 'G', 'B' mean RGB. Core loader: on colour targets R, G and B are stored in place in the row buffer and the YUV conversion is skipped. Greyscale builds now also decode G and B for RGB and combine them into luma per block, which needs every component to be one block per MCU; other RGB layouts are rejected there. Plugin: RGB needs one block per MCU for every component, otherwise it is rejected (colour targets fall back to jpegp). Colour builds convert the R, G and B planes to YCbCr in place after decoding, so display and greyscale view modes are unchanged; greyscale builds combine R, G and B into luma per block as the core does. Code size on the e200: core loader +351 bytes, plugin decoder +603 bytes. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Change-Id: Ib24a0b7690ca4c00b3ac01b2f511309efeac5975 |
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| android | ||
| apps | ||
| backdrops | ||
| bootloader | ||
| docs | ||
| firmware | ||
| fonts | ||
| icons | ||
| lib | ||
| manual | ||
| packaging | ||
| tools | ||
| uisimulator | ||
| utils | ||
| wps | ||
| .gitattributes | ||
| .gitignore | ||
| .gitreview | ||
__________ __ ___.
Open \______ \ ____ ____ | | _\_ |__ _______ ___
Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
\/ \/ \/ \/ \/
Build Your Own Rockbox
1. Clone 'rockbox' from git (or extract a downloaded archive).
$ git clone git://git.rockbox.org/rockbox
or
$ tar xJf rockbox.tar.xz
2. Create a build directory, preferably in the same directory as the firmware/
and apps/ directories. This is where all generated files will be written.
$ cd rockbox
$ mkdir build
$ cd build
3. Make sure you have mips/m68k/arm-elf-gcc and siblings in the PATH. Make sure
that you have 'perl' in your PATH too. Your gcc cross compiler needs to be
a particular version depending on what player you are compiling for. These
can be generated using the rockboxdev.sh script in the /tools/ folder of the
source.
$ which arm-elf-eabi-gcc
$ which perl
4. In your build directory, run the 'tools/configure' script and enter what
target you want to build for and if you want a debug version or not (and a
few more questions). It'll prompt you. The debug version is for making a
gdb version out of it. It is only useful if you run gdb towards your target
Archos.
$ ../tools/configure
5. *ploink*. Now you have got a Makefile generated for you.
6. Run 'make' and soon the necessary pieces from the firmware and the apps
directories have been compiled, linked and scrambled for you.
$ make
$ make zip
7. unzip the rockbox.zip on your music player, reboot it and
*smile*.
If you want to build for more than one target, just create several build
directories and create a setup for each target:
$ mkdir build-fuzeplus
$ cd build-fuzeplus
$ ../tools/configure
$ mkdir build-xduoox3
$ cd build-xduoox3
$ ../tools/configure
Questions anyone? Ask on the mailing list or on IRC. We'll be happy to help you!