mirror of
https://github.com/vsariola/sointu.git
synced 2025-06-03 17:18:20 -04:00
607e5b5da0
Specifically: * Added win32, elf32 and elf64 asm player and wav writers using winmm. * Added dsound player in C. * Separated the ALL target and the examples; introduced a new examples target.
82 lines
1.6 KiB
NASM
82 lines
1.6 KiB
NASM
%include TRACK_INCLUDE
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%define SND_PCM_FORMAT_S16_LE 0x2
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%define SND_PCM_FORMAT_FLOAT 0xE
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%define SND_PCM_ACCESS_RW_INTERLEAVED 0x3
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%define SND_PCM_STREAM_PLAYBACK 0x0
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section .bss
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sound_buffer:
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resb SU_LENGTH_IN_SAMPLES * SU_SAMPLE_SIZE * SU_CHANNEL_COUNT
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render_thread:
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resq 1
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pcm_handle:
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resq 1
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section .data
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default_device:
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db "default", 0
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section .text
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symbols:
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extern pthread_create
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extern sleep
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extern snd_pcm_open
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extern snd_pcm_set_params
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extern snd_pcm_writei
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global main
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main:
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; Prologue
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push rbp
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mov rbp, rsp
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sub rsp, 0x10
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; Unix does not have gm.dls, no need to ifdef and setup here.
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; We render in the background while playing already.
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mov rcx, sound_buffer
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lea rdx, su_render_song
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mov rsi, 0x0
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mov rdi, render_thread
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call pthread_create
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; We can't start playing too early or the missing samples will be audible.
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mov edi, 0x2
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call sleep
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; Play the track.
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mov rdi, pcm_handle
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mov rsi, default_device
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mov rdx, SND_PCM_STREAM_PLAYBACK
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mov rcx, 0x0
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call snd_pcm_open
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; This is unfortunate. amd64 ABI calling convention kicks in.
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; now we have to maintain the stack pointer :/
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mov rdi, qword [pcm_handle]
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sub rsp, 0x8
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push SU_LENGTH_IN_SAMPLES
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%ifdef SU_SAMPLE_FLOAT
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mov rsi, SND_PCM_FORMAT_FLOAT
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%else ; SU_SAMPLE_FLOAT
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mov rsi, SND_PCM_FORMAT_S16_LE
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%endif ; SU_SAMPLE_FLOAT
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mov rdx, SND_PCM_ACCESS_RW_INTERLEAVED
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mov rcx, SU_CHANNEL_COUNT
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mov r8d, SU_SAMPLE_RATE
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mov r9d, 0x0
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call snd_pcm_set_params
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mov rdi, qword [pcm_handle]
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mov rsi, sound_buffer
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mov rdx, SU_LENGTH_IN_SAMPLES
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call snd_pcm_writei
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exit:
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; At least we can skip the epilogue :)
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leave
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ret
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