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- /**
- * Copyright (C) 2023 saybur
- * ZuluSCSI™ - Copyright (c) 2023-2025 Rabbit Hole Computing™
- *
- * ZuluSCSI™ firmware is licensed under the GPL version 3 or any later version.
- *
- * https://www.gnu.org/licenses/gpl-3.0.html
- * ----
- * 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 <https://www.gnu.org/licenses/>.
- **/
- #pragma once
- #ifdef ENABLE_AUDIO_OUTPUT_I2S
- extern bool g_audio_enabled;
- extern bool g_ode_audio_stopped;
- // size of the a circular audio sample buffer, in bytes
- // these must be divisible by 1024
- #define AUDIO_BUFFER_SIZE 16384
- // #define AUDIO_BUFFER_SIZE 8192 // ~46.44ms
- // # define AUDIO_BUFFER_SIZE 4096 // reduce memory usage
- #define AUDIO_BUFFER_HALF_SIZE AUDIO_BUFFER_SIZE / 2
- /**
- * Handler for I2S DMA interrupts
- */
- void ODE_IRQHandler();
- /**
- * Indicates if the audio subsystem is actively streaming, including if it is
- * sending silent data during sample stall events.
- *
- * \return true if audio streaming is active, false otherwise.
- */
- bool audio_is_active();
- /**
- * Initializes the audio subsystem. Should be called only once, toward the end
- * of platform_late_init().
- */
- void audio_setup();
- /**
- * Called from platform_poll() to fill sample buffer(s) if needed.
- */
- void audio_poll();
- #endif //ENABLE_AUDIO_OUTPUT_I2S
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