mirror of
https://github.com/melonDS-emu/melonDS.git
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a bit of frontend refactoring
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RSDuck
@ -1,99 +1,119 @@
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/*
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Copyright 2016-2022 melonDS team
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This file is part of melonDS.
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melonDS is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with melonDS. If not, see http://www.gnu.org/licenses/.
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*/
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#ifndef FRONTENDUTIL_H
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#define FRONTENDUTIL_H
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#include "types.h"
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#include <string>
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#include <vector>
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namespace Frontend
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{
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// setup the display layout based on the provided display size and parameters
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// * screenWidth/screenHeight: size of the host display
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// * screenLayout: how the DS screens are laid out
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// 0 = natural (top screen above bottom screen always)
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// 1 = vertical
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// 2 = horizontal
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// 3 = hybrid
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// * rotation: angle at which the DS screens are presented: 0/1/2/3 = 0/90/180/270
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// * sizing: how the display size is shared between the two screens
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// 0 = even (both screens get same size)
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// 1 = emphasize top screen (make top screen as big as possible, fit bottom screen in remaining space)
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// 2 = emphasize bottom screen
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// 4 = top only
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// 5 = bottom only
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// * screenGap: size of the gap between the two screens
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// * integerScale: force screens to be scaled up at integer scaling factors
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// * screenSwap: whether to swap the position of both screens
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// * topAspect/botAspect: ratio by which to scale the top and bottom screen respectively
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void SetupScreenLayout(int screenWidth, int screenHeight,
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int screenLayout,
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int rotation,
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int sizing,
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int screenGap,
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bool integerScale,
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bool swapScreens,
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float topAspect, float botAspect);
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const int MaxScreenTransforms = 3;
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// get a 2x3 transform matrix for each screen and whether it's a top or bottom screen
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// note: the transform assumes an origin point at the top left of the display,
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// X going right and Y going down
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// for each screen the source coordinates should be (0,0) and (256,192)
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// 'out' should point to an array of 6*MaxScreenTransforms floats
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// 'kind' should point to an array of MaxScreenTransforms ints
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// (0 = indicates top screen, 1 = bottom screen)
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// returns the amount of screens
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int GetScreenTransforms(float* out, int* kind);
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// de-transform the provided host display coordinates to get coordinates
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// on the bottom screen
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bool GetTouchCoords(int& x, int& y, bool clamp);
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// initialize the audio utility
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void Init_Audio(int outputfreq);
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// get how many samples to read from the core audio output
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// based on how many are needed by the frontend (outlen in samples)
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int AudioOut_GetNumSamples(int outlen);
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// resample audio from the core audio output to match the frontend's
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// output frequency, and apply specified volume
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// note: this assumes the output buffer is interleaved stereo
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void AudioOut_Resample(s16* inbuf, int inlen, s16* outbuf, int outlen, int volume);
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// feed silence to the microphone input
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void Mic_FeedSilence();
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// feed random noise to the microphone input
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void Mic_FeedNoise();
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// feed an external buffer to the microphone input
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// buffer should be mono
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void Mic_FeedExternalBuffer();
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void Mic_SetExternalBuffer(s16* buffer, u32 len);
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}
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#endif // FRONTENDUTIL_H
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/*
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Copyright 2016-2022 melonDS team
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This file is part of melonDS.
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melonDS is free software: you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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melonDS is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with melonDS. If not, see http://www.gnu.org/licenses/.
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*/
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#ifndef FRONTENDUTIL_H
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#define FRONTENDUTIL_H
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#include "types.h"
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#include <string>
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#include <vector>
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namespace Frontend
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{
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enum ScreenLayout
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{
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screenLayout_Natural, // top screen above bottom screen always
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screenLayout_Horizontal,
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screenLayout_Vertical,
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screenLayout_Hybrid,
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screenLayout_MAX,
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};
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enum ScreenRotation
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{
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screenRot_0Deg,
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screenRot_90Deg,
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screenRot_180Deg,
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screenRot_270Deg,
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screenRot_MAX,
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};
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enum ScreenSizing
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{
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screenSizing_Even, // both screens get same size
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screenSizing_EmphTop, // make top screen as big as possible, fit bottom screen in remaining space
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screenSizing_EmphBot,
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screenSizing_Auto, // not applied in SetupScreenLayout
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screenSizing_TopOnly,
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screenSizing_BotOnly,
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screenSizing_MAX,
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};
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// setup the display layout based on the provided display size and parameters
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// * screenWidth/screenHeight: size of the host display
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// * screenLayout: how the DS screens are laid out
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// * rotation: angle at which the DS screens are presented
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// * sizing: how the display size is shared between the two screens
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// * screenGap: size of the gap between the two screens in pixels
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// * integerScale: force screens to be scaled up at integer scaling factors
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// * screenSwap: whether to swap the position of both screens
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// * topAspect/botAspect: ratio by which to scale the top and bottom screen respectively
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void SetupScreenLayout(int screenWidth, int screenHeight,
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ScreenLayout screenLayout,
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ScreenRotation rotation,
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ScreenSizing sizing,
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int screenGap,
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bool integerScale,
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bool swapScreens,
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float topAspect, float botAspect);
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const int MaxScreenTransforms = 3;
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// get a 2x3 transform matrix for each screen and whether it's a top or bottom screen
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// note: the transform assumes an origin point at the top left of the display,
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// X going right and Y going down
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// for each screen the source coordinates should be (0,0) and (256,192)
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// 'out' should point to an array of 6*MaxScreenTransforms floats
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// 'kind' should point to an array of MaxScreenTransforms ints
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// (0 = indicates top screen, 1 = bottom screen)
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// returns the amount of screens
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int GetScreenTransforms(float* out, int* kind);
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// de-transform the provided host display coordinates to get coordinates
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// on the bottom screen
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bool GetTouchCoords(int& x, int& y, bool clamp);
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// initialize the audio utility
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void Init_Audio(int outputfreq);
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// get how many samples to read from the core audio output
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// based on how many are needed by the frontend (outlen in samples)
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int AudioOut_GetNumSamples(int outlen);
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// resample audio from the core audio output to match the frontend's
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// output frequency, and apply specified volume
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// note: this assumes the output buffer is interleaved stereo
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void AudioOut_Resample(s16* inbuf, int inlen, s16* outbuf, int outlen, int volume);
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// feed silence to the microphone input
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void Mic_FeedSilence();
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// feed random noise to the microphone input
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void Mic_FeedNoise();
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// feed an external buffer to the microphone input
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// buffer should be mono
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void Mic_FeedExternalBuffer();
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void Mic_SetExternalBuffer(s16* buffer, u32 len);
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}
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#endif // FRONTENDUTIL_H
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