retrograde/retrograde-android

Play retro video games on your Android TV!

Retrograde

Play retro video games on your Android TV!

Features:

• Designed and built for Android TV, looks and feels at home on your device.
• Works with most bluetooth game controllers without any configuration.
• Automatically indexes your game library and downloads game titles and artwork.
• Play games from Google Drive, no need to worry about limited storage space.
• One app for multiple retro game systems, no additional downloads needed!

Supported Systems:

• Nintendo (NES)
• Super Nintendo (SNES)
• Game Boy, Game Boy Color, Game Boy Advance (GB, GBC, GBA)
• Sega Genesis (aka Megadrive)

Chat: https://discord.gg/UuDmP3v

Open-Source Libraries

Retrograde uses the following open-source libraries:

• AutoDispose
• Dagger
• Google API Client
• Java Native Access
• Koptional
• Kotlin
• LibRetro
• Moshi
• OkHttp
• Picasso
• Retrofit
• RxAndroid
• RxJava
• RxPermissions
• RxPreferences
• RxRelay
• Timber

License

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

retrograde-android's Issues

Support for hardware rendering

• Core calls the "environment" callback with RETRO_ENVIRONMENT_SET_HW_RENDER
  https://github.com/libretro/libretro-common/blob/master/include/libretro.h#L546
• Frontend receives that callback and returns a pointer to a struct retro_hw_render_callback
• That struct has two important fields that need to be populated by the frontend:
  • get_proc_address -- pointer to a function that resolves functions by name.
    • This function gets called by the core for every GL symbol.
      https://github.com/libretro/libretro-common/blob/master/glsm/glsm.c#L2256
      https://github.com/libretro/libretro-common/blob/master/glsym/rglgen.c#L41
    • The list of symbols depends on the gl version being used:
      https://github.com/libretro/libretro-common/blob/master/glsym/glsym_gl.c
      https://github.com/libretro/libretro-common/blob/master/glsym/glsym_es2.c
      https://github.com/libretro/libretro-common/blob/master/glsym/glsym_es3.c
    • RetroArch has an implementation of get_proc_address for Android that simply calls thru to egl_get_proc_address.
  • get_current_framebuffer -- pointer to function that returns an opengl framebuffer
    • TODO: Figure this out.
• Struct also has a field context_reset pointing to a function that needs to be called by the frontend to initialize/reset hw rendering.

Integrate Dropbox

Convert gradle files to kotlin

Replace game loop fixedRateTimer with something more accurate

Can't use Choreographer because the game speed may not match the device framerate.

Maybe something like this https://github.com/LWJGL/lwjgl/blob/master/src/java/org/lwjgl/opengl/Sync.java

Auto-detect best core for selected rom

Instead of showing list, just do the right thing

Where can we get the dep file?

In the gradle files, there are lots of deps, and it would cause error like " Unresolved reference: deps". Is there any file define all these deps? Thanks

Rename project

"Odyssey" conflicts with a certain recently released video game and so we need to rename this thing. Please post any suggestions!

Not able to search ".nes" files present in internal storage of Sony Bravia 8200e android TV.

Hi,
I copied few .nes files into download folder of my android Tv internal storage. They are not listing in the RetroGrade app. I have tried all the options from app and given appropriate permission also to it.

Figure out how retroarch core updater works

CLAssistant still mentions Odyssey

Contributor agreement is a bit outdated, @codebutler, can you update it with Retrograde brand?

Integrate Google Drive

Add Fabric for crash reporting

Support for multiple controllers (local multiplayer)

See the "port" argument in RetroDroid#onInputState: https://github.com/codebutler/odyssey/blob/db83c3d61b0d62f09e3738fe5b1f80f0a31c0e11/odyssey-lib/src/main/java/com/codebutler/odyssey/lib/retro/RetroDroid.kt#L295-L299

Hook up game to activity lifecycle

Don't allocate new bytearray for every audio frame

Implement game save/load

Don't allocate new bytearray for every video frame

Run at correct speed

Android TV "Leanback" UI

Set up lint/ktlint/checkstyle/travisci

game titles and artwork

Hi,

Regarding "Automatically indexes your game library and downloads game titles and artwork" feature, does it require some file naming convention? How long does it take to index and download?
Mine just shows the filenames.

Integrate OpenVGDB

Use SurfaceView for video rendering

Simple UI for selecting rom