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[cadcdev-svn-commits] [SCM] branch master updated. v2.0.0-1116-g4d1b67c
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From: ljsebald <ljs...@us...> - 2023-11-11 03:34:19
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- Log -----------------------------------------------------------------
commit 4d1b67c84f5770a1eb8ddb65507751a42d0850ae
Author: Andress Barajas <and...@gm...>
Date: Fri Nov 10 19:33:48 2023 -0800
Add multi-streaming example (#351)
* Add multi-streaming example
-----------------------------------------------------------------------
Summary of changes:
.../dreamcast/sound/{sfx => multi-stream}/Makefile | 12 +-
examples/dreamcast/sound/multi-stream/README | 20 +++
examples/dreamcast/sound/multi-stream/main.c | 152 +++++++++++++++++++++
.../sound/multi-stream/romdisk/brushing.wav | Bin 0 -> 1508444 bytes
.../sound/multi-stream/romdisk/faucet.wav | Bin 0 -> 652380 bytes
5 files changed, 178 insertions(+), 6 deletions(-)
copy examples/dreamcast/sound/{sfx => multi-stream}/Makefile (63%)
create mode 100644 examples/dreamcast/sound/multi-stream/README
create mode 100644 examples/dreamcast/sound/multi-stream/main.c
create mode 100644 examples/dreamcast/sound/multi-stream/romdisk/brushing.wav
create mode 100644 examples/dreamcast/sound/multi-stream/romdisk/faucet.wav
diff --git a/examples/dreamcast/sound/sfx/Makefile b/examples/dreamcast/sound/multi-stream/Makefile
similarity index 63%
copy from examples/dreamcast/sound/sfx/Makefile
copy to examples/dreamcast/sound/multi-stream/Makefile
index c2d38ef..da2fa38 100644
--- a/examples/dreamcast/sound/sfx/Makefile
+++ b/examples/dreamcast/sound/multi-stream/Makefile
@@ -1,10 +1,10 @@
# KallistiOS ##version##
#
-# examples/dreamcast/sound/sfx/Makefile
+# examples/dreamcast/sound/multi-stream/Makefile
#
-TARGET = sfx.elf
-OBJS = main.o romdisk.o
+TARGET = multistream.elf
+OBJS = romdisk.o main.o
KOS_ROMDISK_DIR = romdisk
all: clean $(TARGET)
@@ -16,12 +16,12 @@ clean:
-rm -f romdisk.o romdisk.img
$(TARGET): $(OBJS)
- kos-cc -o $(TARGET) $(OBJS)
+ kos-cc -o $(TARGET) $(OBJS) $(DATAOBJS) $(OBJEXTRA) -lwav
-run: $(TARGET)
+run:
$(KOS_LOADER) $(TARGET)
-dist: $(TARGET)
+dist:
rm -f $(OBJS) romdisk.o romdisk.img
$(KOS_STRIP) $(TARGET)
diff --git a/examples/dreamcast/sound/multi-stream/README b/examples/dreamcast/sound/multi-stream/README
new file mode 100644
index 0000000..7e4504f
--- /dev/null
+++ b/examples/dreamcast/sound/multi-stream/README
@@ -0,0 +1,20 @@
+Overview
+This example demonstrates audio playback using libwav (kos-port). The sounds utilized in this example were sourced from https://gamesounds.xyz/?dir=Sound%20Effects/Bathroom and converted to ADPCM format.
+
+Conversion to ADPCM Format
+This conversion was achieved using FFmpeg, a powerful multimedia framework. The following command was used for conversion:
+
+ffmpeg -i PCM16_stereo.wav -acodec adpcm_yamaha -ac 2 ADPCM_stereo.wav
+
+This command converts a stereo PCM WAV file (PCM16_stereo.wav) to a stereo Yamaha ADPCM WAV file (ADPCM_stereo.wav).
+
+Playback Using libwav (kos-port)
+The libwav (kos-port) library is used for audio playback in this project. It is versatile and supports all the Dreamcast
+audio formats:
+
+4-bit ADPCM data (as demonstrated in this example)
+8-bit and 16-bit uncompressed PCM data
+
+Use the following command to convert a 16-bit stereo PCM WAV file (PCM16_stereo.wav) to a 8-bit stero PCM WAV file (PCM8_mono.wav):
+
+ffmpeg -i PCM16_stereo.wav -acodec pcm_u8 -ac 1 PCM8_mono.wav
diff --git a/examples/dreamcast/sound/multi-stream/main.c b/examples/dreamcast/sound/multi-stream/main.c
new file mode 100644
index 0000000..bb64d32
--- /dev/null
+++ b/examples/dreamcast/sound/multi-stream/main.c
@@ -0,0 +1,152 @@
+/* KallistiOS ##version##
+
+ main.c
+ Copyright (C) 2023 Andy Barajas
+
+ This example program demonstrates playing two ADPCM wav stereo
+ streams at once using libwav.
+*/
+
+#include <kos.h>
+#include <wav/sndwav.h>
+
+#define LOOP 1
+
+static void draw_instructions(int faucet_vol, int brushing_vol);
+
+static cont_state_t *get_cont_state();
+static int button_pressed(uint32_t current_buttons, uint32_t changed_buttons, uint32_t button);
+
+int main(int argc, char **argv) {
+ uint8_t faucet_volume = 240;
+ uint8_t brushing_volume = 240;
+ int volume_changed = 1;
+ cont_state_t *cond;
+ uint32_t current_buttons = 0;
+ uint32_t changed_buttons = 0;
+ uint32_t previous_buttons = 0;
+
+ vid_set_mode(DM_640x480, PM_RGB555);
+ // Initialize sound system and WAV
+ snd_stream_init();
+ wav_init();
+
+ wav_stream_hnd_t faucet = wav_create("/rd/faucet.wav", LOOP);
+ wav_volume(faucet, faucet_volume);
+
+ wav_stream_hnd_t brushing = wav_create("/rd/brushing.wav", LOOP);
+ wav_volume(brushing, brushing_volume);
+
+ wav_play(faucet);
+ wav_play(brushing);
+
+
+ for(;;) {
+ cond = get_cont_state();
+ current_buttons = cond->buttons;
+ changed_buttons = current_buttons ^ previous_buttons;
+ previous_buttons = current_buttons;
+
+ // Play wav files if they arent playing already
+ if(button_pressed(current_buttons, changed_buttons, CONT_X)) {
+ if(!wav_isplaying(faucet))
+ wav_play(faucet);
+ }
+ if(button_pressed(current_buttons, changed_buttons, CONT_Y)) {
+ if(!wav_isplaying(brushing))
+ wav_play(brushing);
+ }
+ // Stop playing faucet
+ if(button_pressed(current_buttons, changed_buttons, CONT_A)) {
+ wav_stop(faucet);
+ }
+ // Stop playing brushing
+ if(button_pressed(current_buttons, changed_buttons, CONT_B)) {
+ wav_stop(brushing);
+ }
+
+ // Adjust Volume
+ if(cond->ltrig > 0) {
+ if(faucet_volume < 255)
+ faucet_volume++;
+ else
+ faucet_volume = 0;
+ volume_changed = 1;
+ wav_volume(faucet, faucet_volume);
+ }
+ if(cond->rtrig > 0) {
+ if(faucet_volume < 255)
+ brushing_volume++;
+ else
+ brushing_volume = 0;
+ volume_changed = 1;
+ wav_volume(brushing, brushing_volume);
+ }
+
+ // Exit Program
+ if(button_pressed(current_buttons, changed_buttons, CONT_START))
+ break;
+
+ if(volume_changed) {
+ volume_changed = 0;
+ draw_instructions(faucet_volume, brushing_volume);
+ }
+ }
+
+ wav_shutdown();
+ snd_stream_shutdown();
+
+ return 0;
+}
+
+static void draw_instructions(int faucet_vol, int brushing_vol) {
+ int x = 20, y = 20+24;
+ int color = 1;
+ char volume_str[32];
+
+ bfont_draw_str(vram_s + y*640+x, 640, color, "Press X to play faucet sound");
+ y += 24;
+ bfont_draw_str(vram_s + y*640+x, 640, color, "Press A to stop faucet sound");
+ y += 24;
+ bfont_draw_str(vram_s + y*640+x, 640, color, "Press L-Trigger to increase faucet volume");
+ y += 24;
+ memset(volume_str, 0, 32);
+ snprintf(volume_str, 32, "Faucet Volume: %3i", faucet_vol);
+ bfont_draw_str(vram_s + y*640+x, 640, color, volume_str);
+
+ y += 48;
+ bfont_draw_str(vram_s + y*640+x, 640, color, "Press Y to play brushing sound");
+ y += 24;
+ bfont_draw_str(vram_s + y*640+x, 640, color, "Press B to stop brushing sound");
+ y += 24;
+ bfont_draw_str(vram_s + y*640+x, 640, color, "Press R-Trigger to increase brushing volume");
+ y += 24;
+ memset(volume_str, 0, 32);
+ snprintf(volume_str, 32, "Brushing Volume: %3i", brushing_vol);
+ bfont_draw_str(vram_s + y*640+x, 640, color, volume_str);
+
+ y += 48;
+ bfont_draw_str(vram_s + y*640+x, 640, color, "Press Start to exit program");
+}
+
+static cont_state_t *get_cont_state() {
+ maple_device_t *cont;
+ cont_state_t *state;
+
+ cont = maple_enum_type(0, MAPLE_FUNC_CONTROLLER);
+ if(cont) {
+ state = (cont_state_t *)maple_dev_status(cont);
+ return state;
+ }
+
+ return NULL;
+}
+
+static int button_pressed(uint32_t current_buttons, uint32_t changed_buttons, uint32_t button) {
+ if (changed_buttons & button) {
+ if (current_buttons & button)
+ return 1;
+ }
+
+ return 0;
+}
diff --git a/examples/dreamcast/sound/multi-stream/romdisk/brushing.wav b/examples/dreamcast/sound/multi-stream/romdisk/brushing.wav
new file mode 100644
index 0000000..fb42d82
Binary files /dev/null and b/examples/dreamcast/sound/multi-stream/romdisk/brushing.wav differ
diff --git a/examples/dreamcast/sound/multi-stream/romdisk/faucet.wav b/examples/dreamcast/sound/multi-stream/romdisk/faucet.wav
new file mode 100644
index 0000000..05d2d65
Binary files /dev/null and b/examples/dreamcast/sound/multi-stream/romdisk/faucet.wav differ
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--
A pseudo Operating System for the Dreamcast.
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