diff options
Diffstat (limited to 'qemu/roms/u-boot/drivers/sound/sound.c')
-rw-r--r-- | qemu/roms/u-boot/drivers/sound/sound.c | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/qemu/roms/u-boot/drivers/sound/sound.c b/qemu/roms/u-boot/drivers/sound/sound.c deleted file mode 100644 index 9dda2dba8..000000000 --- a/qemu/roms/u-boot/drivers/sound/sound.c +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Copyright (C) 2012 Samsung Electronics - * R. Chandrasekar <rcsekar@samsung.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <sound.h> - -void sound_create_square_wave(unsigned short *data, int size, uint32_t freq) -{ - const int sample = 48000; - const unsigned short amplitude = 16000; /* between 1 and 32767 */ - const int period = freq ? sample / freq : 0; - const int half = period / 2; - - assert(freq); - - /* Make sure we don't overflow our buffer */ - if (size % 2) - size--; - - while (size) { - int i; - for (i = 0; size && i < half; i++) { - size -= 2; - *data++ = amplitude; - *data++ = amplitude; - } - for (i = 0; size && i < period - half; i++) { - size -= 2; - *data++ = -amplitude; - *data++ = -amplitude; - } - } -} |