mirror of https://github.com/irmen/prog8.git
vumeter tweaks
This commit is contained in:
Irmen de Jong
parent
5ac9c75521
commit
e3e7b060b7
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@ -1,22 +1,24 @@
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%import diskio
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%import diskio
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%import palette
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%import sprites
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%import sprites
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%option no_sysinit
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%option no_sysinit
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; play a raw pcm stereo 16 bit audio file at 16021 hz,
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; play a raw pcm stereo 16 bit audio file at 16021 hz,
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; with real-time VU meters and sample waveform displays.
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; with real-time VU meters and sample waveform displays.
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; Left as an excercise for the reader: add peak level indicator.
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; you can make an appropriate pcm file with one of the following commands:
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; that would require use of more sprites though, because it has to appear on top of the blocking black sprites.
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; ffmpeg -i input_audio_file -ac 2 -ar 16021 -f s16le -acodec pcm_s16le music.pcm
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; sox input_audio_file -e signed-integer -L -b 16 -c 2 -r 16021 -t raw music.pcm
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main {
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main {
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const ubyte vera_rate = 42 ; 16021 hz
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const ubyte vera_rate = 42 ; 16021 hz
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str pcmfile = "thriller-16k.pcm" ; should be raw pcm, 16 bits signed integer, stereo, 16021 hz.
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str pcmfile = "music.pcm" ; see format specs mentioned above
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sub start() {
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sub start() {
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setup()
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setup()
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play_stuff()
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play_stuff()
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repeat {}
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}
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}
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sub setup() {
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sub setup() {
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@ -24,7 +26,7 @@ main {
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cx16.GRAPH_set_colors(0,0,0)
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cx16.GRAPH_set_colors(0,0,0)
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cx16.GRAPH_clear()
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cx16.GRAPH_clear()
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cx16.GRAPH_set_colors(47,0,0)
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cx16.GRAPH_set_colors(6,0,0)
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cx16.r0 = 250
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cx16.r0 = 250
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cx16.r1 = 10
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cx16.r1 = 10
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for cx16.r9L in iso:"made in Prog8"
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for cx16.r9L in iso:"made in Prog8"
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@ -42,33 +44,16 @@ main {
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repeat 1024
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repeat 1024
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cx16.VERA_AUDIO_DATA = 0 ; fill buffer with short silence
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cx16.VERA_AUDIO_DATA = 0 ; fill buffer with short silence
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; vu bar sprites (left and right bars, each 4 sprites)
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; clear vu meter to base values
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palette.set_color(15, $000) ; make sprites black
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for cx16.r9L in 0 to 7 {
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sprites.init(cx16.r9L, 1, $3000, sprites.SIZE_32, sprites.SIZE_64, sprites.COLORS_16, 0)
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}
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for cx16.r9 in $3000 to $3000+32*64/2 {
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cx16.vpoke(1, cx16.r9, $ff)
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}
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; move the vu sprites to the base positions
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update_vu()
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update_vu()
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; draw vu gradient bars.
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; draw the vu gradient bars (20 leds each)
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; 18 bars from the bottom are gradient from green to red
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; They use palette colors 16 and up, in pairs. Left bar first (16-55) then right bar (56-95).
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; 4 bars on top of that are just red for the extremes
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for cx16.r9L in 0 to 19 {
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ubyte[18] gradient_colors_outline = [ 2, 2, 2, 2, 51, 51, 8, 8, 5, 5, 5, 5, 141, 141, 141, 141, 140, 140]
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cx16.GRAPH_set_colors(16+cx16.r9L*2, 17+cx16.r9L*2, 0)
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ubyte[18] gradient_colors_fill = [59, 59, 52, 52, 8, 8, 80, 80, 13, 13, 13, 13, 143, 143, 143, 143, 142, 142]
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cx16.GRAPH_draw_rect(160-32-16, 220-8-cx16.r9L*8, 32, 7, 0, true)
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cx16.GRAPH_set_colors(56+cx16.r9L*2, 57+cx16.r9L*2, 0)
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for cx16.r9L in 0 to len(gradient_colors_fill)-1 {
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cx16.GRAPH_draw_rect(160+32-16, 220-8-cx16.r9L*8, 32, 7, 0, true)
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cx16.GRAPH_set_colors(gradient_colors_outline[cx16.r9L], gradient_colors_fill[cx16.r9L], 0)
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cx16.GRAPH_draw_rect(160-32-16, cx16.r9L * 8 + $0060, 32, 7, 0, true)
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cx16.GRAPH_draw_rect(160+32-16, cx16.r9L * 8 + $0060, 32, 7, 0, true)
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}
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for cx16.r9L in 0 to 3 {
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cx16.GRAPH_set_colors(gradient_colors_outline[0], gradient_colors_fill[0], 0)
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cx16.GRAPH_draw_rect(160-32-16, cx16.r9L * 8 + $0040, 32, 7, 0, true)
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cx16.GRAPH_draw_rect(160+32-16, cx16.r9L * 8 + $0040, 32, 7, 0, true)
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}
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}
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; waveform sprites 32x64
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; waveform sprites 32x64
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@ -78,8 +63,8 @@ main {
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cx16.vpoke(1, cx16.r9, 0)
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cx16.vpoke(1, cx16.r9, 0)
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cx16.vpoke(1, cx16.r9+$0400, 0)
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cx16.vpoke(1, cx16.r9+$0400, 0)
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}
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}
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sprites.pos(16, 160-100-16, 120)
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sprites.pos(16, 160-100-16, 100)
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sprites.pos(17, 160+100-16, 120)
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sprites.pos(17, 160+100-16, 100)
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; activate irq handlers
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; activate irq handlers
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cx16.enable_irq_handlers(true)
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cx16.enable_irq_handlers(true)
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@ -89,6 +74,7 @@ main {
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sub play_stuff() {
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sub play_stuff() {
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if diskio.f_open(pcmfile) {
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if diskio.f_open(pcmfile) {
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bool streaming = true
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music.pre_buffer()
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music.pre_buffer()
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cx16.VERA_AUDIO_RATE = vera_rate ; start audio playback
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cx16.VERA_AUDIO_RATE = vera_rate ; start audio playback
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@ -100,14 +86,18 @@ main {
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}
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}
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if interrupts.aflow {
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if interrupts.aflow {
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interrupts.aflow=false
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interrupts.aflow=false
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if not music.load_next_block()
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if streaming {
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break
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streaming = music.load_next_block()
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if not streaming {
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cx16.VERA_AUDIO_RATE = 0 ; halt playback
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diskio.f_close()
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sys.memset(music.buffer, music.PCM_BLOCK_SIZE, 0)
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}
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}
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; Note: copying the samples into the fifo buffer is done by the aflow interrupt handler itself.
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; Note: copying the samples into the fifo buffer is done by the aflow interrupt handler itself.
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collect_audio_volumes()
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collect_audio_volumes()
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}
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}
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}
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}
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diskio.f_close()
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} else {
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} else {
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txt.print("load error\n")
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txt.print("load error\n")
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}
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}
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@ -115,15 +105,17 @@ main {
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cx16.VERA_AUDIO_RATE = 0 ; halt playback
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cx16.VERA_AUDIO_RATE = 0 ; halt playback
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}
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}
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uword @zp current_vol_left
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uword @zp current_vol_left, current_vol_right
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uword @zp current_vol_right
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uword avg_vol_left, avg_vol_right
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uword avg_vol_left
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ubyte peak_left, peak_right
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uword avg_vol_right
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ubyte vu_refresh_ticks = 2
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ubyte vu_refresh_ticks = 2
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ubyte peak_falloff_ticks_left = 2
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ubyte peak_falloff_ticks_right = 2
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ubyte peak_stick_delay_left
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ubyte peak_stick_delay_right
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sub collect_audio_volumes() {
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sub collect_audio_volumes() {
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current_vol_left=0
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current_vol_left = current_vol_right = 0
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current_vol_right=0
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uword @zp buf_ptr = music.buffer + 1
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uword @zp buf_ptr = music.buffer + 1
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sys.set_irqd()
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sys.set_irqd()
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@ -157,14 +149,13 @@ main {
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if_z {
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if_z {
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vu_refresh_ticks = 2
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vu_refresh_ticks = 2
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update_vu()
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update_vu()
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avg_vol_left = 0
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avg_vol_left = avg_vol_right = 0
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avg_vol_right = 0
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} else {
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} else {
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avg_vol_left += current_vol_left
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avg_vol_left += current_vol_left
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avg_vol_right += current_vol_right
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avg_vol_right += current_vol_right
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}
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}
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uword sample_ptr = music.buffer
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uword @zp sample_ptr = music.buffer
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cx16.vaddr(1,$3400,0,1)
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cx16.vaddr(1,$3400,0,1)
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repeat 64 {
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repeat 64 {
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sample_line()
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sample_line()
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@ -231,36 +222,102 @@ main {
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; cx16.VERA_DATA0 = sample_sprite_tab_e[cx16.r0L]
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; cx16.VERA_DATA0 = sample_sprite_tab_e[cx16.r0L]
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; cx16.VERA_DATA0 = sample_sprite_tab_f[cx16.r0L]
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; cx16.VERA_DATA0 = sample_sprite_tab_f[cx16.r0L]
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ubyte[32] sample_sprite_tab_0 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $10,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_0 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $1c,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_1 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$10,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_1 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$c0,$1c,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_2 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$10,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_2 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$c0,$1c,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_3 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$01,$01,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_3 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$c0,$1c,$01,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_4 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$10,$01,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_4 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$c0,$1c,$01,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_5 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$10,$01,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_5 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$c0,$1c,$01,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_6 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$10,$01,$00,$00]
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ubyte[32] sample_sprite_tab_6 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$c0,$1c,$01,$00,$00]
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ubyte[32] sample_sprite_tab_7 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$10,$01]
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ubyte[32] sample_sprite_tab_7 = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$c0,$1c,$01]
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ubyte[32] sample_sprite_tab_8 = [$10,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_8 = [$1c,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_9 = [$00,$00,$10,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_9 = [$00,$c0,$1c,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_a = [$00,$00,$00,$00,$10,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_a = [$00,$00,$00,$c0,$1c,$01,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_b = [$00,$00,$00,$00,$00,$00,$10,$01,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_b = [$00,$00,$00,$00,$00,$c0,$1c,$01,$00,$00,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_c = [$00,$00,$00,$00,$00,$00,$00,$00,$10,$01,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_c = [$00,$00,$00,$00,$00,$00,$00,$c0,$1c,$01,$00,$00,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_d = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$10,$01,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_d = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$c0,$1c,$01,$00,$00,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_e = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$10,$01,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_e = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$c0,$1c,$01,$00,$00, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_f = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$10,$10, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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ubyte[32] sample_sprite_tab_f = [$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$c0,$1c,$01, $00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00]
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}
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}
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}
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}
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sub update_vu() {
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sub update_vu() {
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; determine vu 'level' in steps of 8 pixels
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; determine vu 'level' in steps of 8 pixels, on a scale of 0-19
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word aleft = ($00a0 as word - msb(avg_vol_left)) & %11111111_11111000
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ubyte aleft = min(143, msb(avg_vol_left))
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word aright = ($00a0 as word - msb(avg_vol_right)) & %11111111_11111000
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ubyte aright = min(143, msb(avg_vol_right))
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for cx16.r9L in 0 to 3 {
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aleft = (aleft >> 3) + 2
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; note: sprites overlap a bit to avoid scanlines peeping through when updating outside of vblank
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aright = (aright >> 3) + 2
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sprites.pos(cx16.r9L, 160-32-16, aleft)
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sprites.pos(4+cx16.r9L, 160+32-16, aright)
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set_inactive_leds()
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aleft -= 32
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set_peak_indicator()
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aright -= 32
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set_active_leds()
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sub set_inactive_leds() {
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ubyte level
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for level in aleft*4 to 19*4 step 4 {
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set_led_colors(16*2+level, 20)
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}
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for level in aright*4 to 19*4 step 4 {
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set_led_colors(56*2+level, 20)
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}
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}
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}
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sub set_active_leds() {
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do {
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aleft--
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set_led_colors((16+aleft*2)*2, aleft)
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} until aleft==0
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do {
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aright--
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set_led_colors((56+aright*2)*2, aright)
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} until aright==0
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}
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||||||
|
sub set_peak_indicator() {
|
||||||
|
peak_stick_delay_left--
|
||||||
|
if_z {
|
||||||
|
peak_stick_delay_left = 1
|
||||||
|
peak_falloff_ticks_left--
|
||||||
|
if_z {
|
||||||
|
peak_falloff_ticks_left = 2
|
||||||
|
if peak_left!=0
|
||||||
|
peak_left--
|
||||||
|
}
|
||||||
|
}
|
||||||
|
peak_stick_delay_right--
|
||||||
|
if_z {
|
||||||
|
peak_stick_delay_right = 1
|
||||||
|
peak_falloff_ticks_right--
|
||||||
|
if_z {
|
||||||
|
peak_falloff_ticks_right = 2
|
||||||
|
if peak_right!=0
|
||||||
|
peak_right--
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if aleft>peak_left {
|
||||||
|
peak_stick_delay_left = 15
|
||||||
|
peak_left = aleft
|
||||||
|
}
|
||||||
|
if aright>peak_right {
|
||||||
|
peak_stick_delay_right = 15
|
||||||
|
peak_right = aright
|
||||||
|
}
|
||||||
|
set_led_colors(16*2+peak_left*4, 21)
|
||||||
|
set_led_colors(56*2+peak_right*4, 21)
|
||||||
|
}
|
||||||
|
|
||||||
|
sub set_led_colors(ubyte palette_offset, ubyte color_idx) {
|
||||||
|
cx16.vaddr(1, $fa00+palette_offset, 0, 1)
|
||||||
|
uword @zp outline_rgb = outline_color[color_idx]
|
||||||
|
uword @zp fill_rgb = fill_color[color_idx]
|
||||||
|
cx16.VERA_DATA0 = lsb(outline_rgb)
|
||||||
|
cx16.VERA_DATA0 = msb(outline_rgb)
|
||||||
|
cx16.VERA_DATA0 = lsb(fill_rgb)
|
||||||
|
cx16.VERA_DATA0 = msb(fill_rgb)
|
||||||
|
}
|
||||||
|
|
||||||
|
uword[22] @split outline_color = [$090,$190,$290,$390,$490,$590,$690,$790,$990,$980,$970,$960,$950,$940,$a30,$a00,$a00,$a00,$a00,$a00, $111, $148]
|
||||||
|
uword[22] @split fill_color = [$0f0,$2f0,$4f0,$6f0,$8f0,$af0,$cf0,$ef0,$ff0,$fe0,$fc0,$fa0,$f80,$f60,$f40,$f00,$f01,$f02,$f03,$f04, $000, $28f]
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
@ -329,7 +386,7 @@ music {
|
||||||
}}
|
}}
|
||||||
; original prog8 code:
|
; original prog8 code:
|
||||||
; uword @requirezp ptr = main.start.buffer
|
; uword @requirezp ptr = main.start.buffer
|
||||||
; repeat 1024 {
|
; repeat PCM_BLOCK_SIZE {
|
||||||
; cx16.VERA_AUDIO_DATA = @(ptr)
|
; cx16.VERA_AUDIO_DATA = @(ptr)
|
||||||
; ptr++
|
; ptr++
|
||||||
; }
|
; }
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue