mirror of
https://github.com/irmen/prog8.git
synced 2024-11-26 11:49:22 +00:00
adpcm plays pcm
This commit is contained in:
Irmen de Jong
parent
483f313eda
commit
0d0ce6eec1
@ -1,37 +1,102 @@
|
|||||||
%import textio
|
%import textio
|
||||||
|
%option no_sysinit
|
||||||
|
%zeropage basicsafe
|
||||||
|
|
||||||
main {
|
main {
|
||||||
|
|
||||||
sub start() {
|
sub start() {
|
||||||
|
cx16.VERA_AUDIO_CTRL = %10101111 ; mono 16 bit
|
||||||
|
cx16.VERA_AUDIO_RATE = 0 ; halt playback
|
||||||
|
cx16.VERA_IEN &= %11110111 ; disable AFLOW
|
||||||
|
repeat 4096 {
|
||||||
|
cx16.VERA_AUDIO_DATA = 0
|
||||||
|
}
|
||||||
|
|
||||||
; cx16.set_rasterirq(irqhandler, 10)
|
cx16.VERA_AUDIO_RATE = 16
|
||||||
uword adpcm_size = &adpcm_data_end - &adpcm_data
|
|
||||||
uword num_adpcm_blocks = adpcm_size / 256
|
|
||||||
uword nibblesptr = &adpcm_data
|
|
||||||
|
|
||||||
num_adpcm_blocks = 1
|
uword pcm_size = &pcm_data_end - &pcm_data
|
||||||
nibblesptr = &nibbles
|
uword num_blocks = pcm_size / 1024
|
||||||
|
uword pcm_ptr = &pcm_data
|
||||||
|
|
||||||
repeat num_adpcm_blocks {
|
txt.print("audio on.\n")
|
||||||
uword @zp sample = peekw(nibblesptr)
|
|
||||||
nibblesptr += 2
|
|
||||||
adpcm.init(sample, @(nibblesptr))
|
|
||||||
nibblesptr += 2
|
|
||||||
|
|
||||||
repeat 252 {
|
repeat num_blocks {
|
||||||
ubyte @zp nibble = @(nibblesptr)
|
; wait till the fifo is empty (fully empty??)
|
||||||
adpcm.decode_nibble(nibble & 15)
|
while not (cx16.VERA_AUDIO_CTRL & %01000000) {
|
||||||
txt.print_w(adpcm.predict as word)
|
; wait
|
||||||
txt.spc()
|
}
|
||||||
adpcm.decode_nibble(nibble>>4)
|
|
||||||
txt.print_w(adpcm.predict as word)
|
; fill more audio data
|
||||||
txt.spc()
|
repeat 512 {
|
||||||
nibblesptr++
|
cx16.VERA_AUDIO_DATA = @(pcm_ptr)
|
||||||
|
pcm_ptr++
|
||||||
|
cx16.VERA_AUDIO_DATA = @(pcm_ptr)
|
||||||
|
pcm_ptr++
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
repeat {
|
cx16.VERA_AUDIO_CTRL = %00100000
|
||||||
}
|
cx16.VERA_AUDIO_RATE = 0
|
||||||
|
txt.print("audio off.\n")
|
||||||
|
|
||||||
|
|
||||||
|
; uword adpcm_size = &adpcm_data_end - &adpcm_data
|
||||||
|
; uword num_adpcm_blocks = adpcm_size / 256
|
||||||
|
; uword nibblesptr = &adpcm_data
|
||||||
|
;
|
||||||
|
; nibblesptr = &nibbles
|
||||||
|
; repeat num_adpcm_blocks {
|
||||||
|
; ; wait till the fifo is empty (fully empty??)
|
||||||
|
; while not (cx16.VERA_AUDIO_CTRL & %01000000) {
|
||||||
|
; ; wait
|
||||||
|
; }
|
||||||
|
;
|
||||||
|
; ; decode another adpcm block
|
||||||
|
; uword @zp sample = peekw(nibblesptr)
|
||||||
|
; nibblesptr += 2
|
||||||
|
; adpcm.init(sample, @(nibblesptr))
|
||||||
|
; nibblesptr += 2
|
||||||
|
;
|
||||||
|
; repeat 252 {
|
||||||
|
; ubyte @zp nibble = @(nibblesptr)
|
||||||
|
; adpcm.decode_nibble(nibble & 15)
|
||||||
|
; ; adpcm.predict as word
|
||||||
|
; cx16.VERA_AUDIO_DATA = lsb(adpcm.predict)
|
||||||
|
; cx16.VERA_AUDIO_DATA = msb(adpcm.predict)
|
||||||
|
; adpcm.decode_nibble(nibble>>4)
|
||||||
|
; ; adpcm.predict as word
|
||||||
|
; cx16.VERA_AUDIO_DATA = lsb(adpcm.predict)
|
||||||
|
; cx16.VERA_AUDIO_DATA = msb(adpcm.predict)
|
||||||
|
; nibblesptr++
|
||||||
|
; }
|
||||||
|
; }
|
||||||
|
|
||||||
|
|
||||||
|
; cx16.set_rasterirq(irqhandler, 10)
|
||||||
|
; uword adpcm_size = &adpcm_data_end - &adpcm_data
|
||||||
|
; uword num_adpcm_blocks = adpcm_size / 256
|
||||||
|
; uword nibblesptr = &adpcm_data
|
||||||
|
;
|
||||||
|
; num_adpcm_blocks = 1
|
||||||
|
; nibblesptr = &nibbles
|
||||||
|
;
|
||||||
|
; repeat num_adpcm_blocks {
|
||||||
|
; uword @zp sample = peekw(nibblesptr)
|
||||||
|
; nibblesptr += 2
|
||||||
|
; adpcm.init(sample, @(nibblesptr))
|
||||||
|
; nibblesptr += 2
|
||||||
|
;
|
||||||
|
; repeat 252 {
|
||||||
|
; ubyte @zp nibble = @(nibblesptr)
|
||||||
|
; adpcm.decode_nibble(nibble & 15)
|
||||||
|
; txt.print_w(adpcm.predict as word)
|
||||||
|
; txt.spc()
|
||||||
|
; adpcm.decode_nibble(nibble>>4)
|
||||||
|
; txt.print_w(adpcm.predict as word)
|
||||||
|
; txt.spc()
|
||||||
|
; nibblesptr++
|
||||||
|
; }
|
||||||
|
; }
|
||||||
}
|
}
|
||||||
|
|
||||||
; sub irqhandler() {
|
; sub irqhandler() {
|
||||||
@ -41,7 +106,7 @@ main {
|
|||||||
; adpcm.init(sample, nibbles[2])
|
; adpcm.init(sample, nibbles[2])
|
||||||
;
|
;
|
||||||
; ubyte @zp idx = 4
|
; ubyte @zp idx = 4
|
||||||
; while idx<100 {
|
; while idx<200 {
|
||||||
; ubyte @zp nibble = nibbles[idx]
|
; ubyte @zp nibble = nibbles[idx]
|
||||||
; adpcm.decode_nibble(nibble & 15)
|
; adpcm.decode_nibble(nibble & 15)
|
||||||
; sample = adpcm.predict
|
; sample = adpcm.predict
|
||||||
@ -54,25 +119,29 @@ main {
|
|||||||
; cx16.vpoke(1, $fa00,0)
|
; cx16.vpoke(1, $fa00,0)
|
||||||
; }
|
; }
|
||||||
|
|
||||||
adpcm_data:
|
;adpcm_data:
|
||||||
%asmbinary "adpcm-mono.bin"
|
; %asmbinary "adpcm-mono.bin"
|
||||||
adpcm_data_end:
|
;adpcm_data_end:
|
||||||
|
|
||||||
ubyte[256] nibbles = [216, 227, 59, 0, 32, 2, 186, 139, 24, 34, 84, 115, 19, 185, 173, 8, 0, 56, 162,
|
; ubyte[256] nibbles = [216, 227, 59, 0, 32, 2, 186, 139, 24, 34, 84, 115, 19, 185, 173, 8, 0, 56, 162,
|
||||||
169, 144, 113, 55, 130, 186, 12, 33, 144, 10, 136, 10, 129, 41, 66, 210, 207,
|
; 169, 144, 113, 55, 130, 186, 12, 33, 144, 10, 136, 10, 129, 41, 66, 210, 207,
|
||||||
9, 0, 153, 129, 185, 173, 155, 0, 37, 162, 191, 27, 36, 129, 144, 137, 82, 18,
|
; 9, 0, 153, 129, 185, 173, 155, 0, 37, 162, 191, 27, 36, 129, 144, 137, 82, 18,
|
||||||
87, 18, 152, 153, 136, 0, 32, 23, 0, 40, 24, 117, 19, 202, 138, 8, 176, 171,
|
; 87, 18, 152, 153, 136, 0, 32, 23, 0, 40, 24, 117, 19, 202, 138, 8, 176, 171,
|
||||||
24, 131, 234, 9, 32, 39, 160, 10, 153, 33, 52, 209, 137, 200, 73, 33, 233, 155,
|
; 24, 131, 234, 9, 32, 39, 160, 10, 153, 33, 52, 209, 137, 200, 73, 33, 233, 155,
|
||||||
136, 66, 146, 8, 152, 56, 131, 113, 23, 168, 169, 185, 9, 160, 65, 37, 49, 22,
|
; 136, 66, 146, 8, 152, 56, 131, 113, 23, 168, 169, 185, 9, 160, 65, 37, 49, 22,
|
||||||
64, 68, 168, 138, 153, 1, 171, 88, 35, 25, 65, 1, 176, 173, 185, 175, 168, 154,
|
; 64, 68, 168, 138, 153, 1, 171, 88, 35, 25, 65, 1, 176, 173, 185, 175, 168, 154,
|
||||||
153, 205, 138, 144, 152, 154, 204, 43, 53, 51, 35, 154, 184, 96, 71, 34, 152,
|
; 153, 205, 138, 144, 152, 154, 204, 43, 53, 51, 35, 154, 184, 96, 71, 34, 152,
|
||||||
172, 138, 160, 9, 24, 16, 204, 88, 48, 54, 160, 172, 152, 65, 132, 168, 48, 4,
|
; 172, 138, 160, 9, 24, 16, 204, 88, 48, 54, 160, 172, 152, 65, 132, 168, 48, 4,
|
||||||
0, 190, 9, 161, 155, 218, 139, 154, 185, 207, 9, 50, 130, 184, 252, 155, 24,
|
; 0, 190, 9, 161, 155, 218, 139, 154, 185, 207, 9, 50, 130, 184, 252, 155, 24,
|
||||||
53, 144, 172, 170, 88, 51, 1, 176, 173, 17, 40, 115, 129, 136, 200, 11, 70,
|
; 53, 144, 172, 170, 88, 51, 1, 176, 173, 17, 40, 115, 129, 136, 200, 11, 70,
|
||||||
129, 8, 0, 0, 48, 37, 160, 42, 35, 32, 17, 18, 220, 174, 170, 143, 9, 137, 160,
|
; 129, 8, 0, 0, 48, 37, 160, 42, 35, 32, 17, 18, 220, 174, 170, 143, 9, 137, 160,
|
||||||
171, 104, 4, 169, 154, 219, 142, 65, 129, 128, 168, 9, 69, 50, 130, 219, 128,
|
; 171, 104, 4, 169, 154, 219, 142, 65, 129, 128, 168, 9, 69, 50, 130, 219, 128,
|
||||||
138, 49, 52, 146, 237, 141, 50, 21, 8, 136, 8, 153, 35, 193, 170, 2, 169, 224,
|
; 138, 49, 52, 146, 237, 141, 50, 21, 8, 136, 8, 153, 35, 193, 170, 2, 169, 224,
|
||||||
186, 170, 40, 253, 12, 17, 25]
|
; 186, 170, 40, 253, 12, 17, 25]
|
||||||
|
|
||||||
|
pcm_data:
|
||||||
|
%asmbinary "pcm-mono.bin"
|
||||||
|
pcm_data_end:
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user