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Stub audiohw_* driver functions for Android cdylib
Volume / EQ / etc. are handled by AAudio + Java MediaSession on Android; the firmware doesn't drive any audio chip directly. Stub the audiohw_* function pointer surface that firmware/sound.c references.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
+33
+1
firmware/SOURCES
+1
firmware/SOURCES
···
1989
1989
target/hosted/android/cdylib/lcd-noop.c
1990
1990
target/hosted/android/cdylib/button-noop.c
1991
1991
target/hosted/android/cdylib/cpuinfo-noop.c
1992
+
target/hosted/android/cdylib/audiohw-noop.c
1992
1993
#else
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/* Existing Java-shell Android app */
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1995
target/hosted/lc-unix.c
+1
firmware/target/hosted/android/cdylib/SOURCES
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firmware/target/hosted/android/cdylib/SOURCES
+31
firmware/target/hosted/android/cdylib/audiohw-noop.c
+31
firmware/target/hosted/android/cdylib/audiohw-noop.c
···
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/* SPDX-License-Identifier: GPL-2.0-or-later
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*
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* No-op audio hardware driver for the Android cdylib build. Volume is
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* handled by AAudio + Java MediaSession on the system side; the firmware
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* doesn't drive the codec chip directly. These stubs satisfy the
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* audiohw_* function-pointer surface that firmware/sound.c references.
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*/
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void audiohw_init(void) { }
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void audiohw_preinit(void) { }
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void audiohw_postinit(void) { }
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void audiohw_close(void) { }
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/* Different audiohw API variants exist depending on chip — provide both
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* signatures so whichever the upper layer expects is satisfied. */
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void audiohw_set_volume(int vol_l, int vol_r) { (void)vol_l; (void)vol_r; }
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void audiohw_set_lineout_volume(int vol_l, int vol_r) { (void)vol_l; (void)vol_r; }
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void audiohw_set_prescaler(int val) { (void)val; }
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void audiohw_set_balance(int val) { (void)val; }
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void audiohw_set_treble(int val) { (void)val; }
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void audiohw_set_bass(int val) { (void)val; }
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void audiohw_set_bass_cutoff(int val) { (void)val; }
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void audiohw_set_treble_cutoff(int val) { (void)val; }
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void audiohw_set_eq_band_gain(unsigned band, int val) { (void)band; (void)val; }
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void audiohw_set_eq_band_frequency(unsigned band, int val) { (void)band; (void)val; }
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void audiohw_set_eq_band_width(unsigned band, int val) { (void)band; (void)val; }
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void audiohw_set_filter_roll_off(int value) { (void)value; }
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void audiohw_set_depth_3d(int val) { (void)val; }
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void audiohw_set_loudness(int val) { (void)val; }
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void audiohw_mute(int mute) { (void)mute; }
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void audiohw_set_frequency(int fsel) { (void)fsel; }