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https://github.com/vsariola/sointu.git
synced 2025-07-18 21:14:31 -04:00
Added x86 asm and C wav writer and player examples.
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.
This commit is contained in:
Alexander Kraus
committed by
Veikko Sariola
Veikko Sariola
parent
a439a4fa48
commit
607e5b5da0
12
examples/code/asm/amd64/CMakeLists.txt
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12
examples/code/asm/amd64/CMakeLists.txt
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@ -0,0 +1,12 @@
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if(WIN32)
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set(CMAKE_ASM_NASM_OBJECT_FORMAT win64)
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elseif(UNIX)
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set(CMAKE_ASM_NASM_OBJECT_FORMAT elf64)
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endif()
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set(CMAKE_ASM_NASM_COMPILE_OBJECT "<CMAKE_ASM_NASM_COMPILER> <INCLUDES> <DEFINES> <FLAGS> -f ${CMAKE_ASM_NASM_OBJECT_FORMAT} -o <OBJECT> <SOURCE>")
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if(UNIX)
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add_asm_example(asmplay "${PROJECT_SOURCE_DIR}/examples/patches/physics_girl_st.yml" amd64 64 "winmm" "asound;pthread")
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add_asm_example(asmwav "${PROJECT_SOURCE_DIR}/examples/patches/physics_girl_st.yml" amd64 64 "" "")
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target_compile_definitions(asmwav-amd64 PRIVATE FILENAME="physics_girl_st.wav")
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endif()
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81
examples/code/asm/amd64/asmplay.elf64.asm
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81
examples/code/asm/amd64/asmplay.elf64.asm
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%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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91
examples/code/asm/amd64/asmwav.elf64.asm
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91
examples/code/asm/amd64/asmwav.elf64.asm
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%include TRACK_INCLUDE
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%define WAVE_FORMAT_PCM 0x1
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%define WAVE_FORMAT_IEEE_FLOAT 0x3
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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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file:
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resq 1
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section .data
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; Change the filename over -DFILENAME="yourfilename.wav"
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filename:
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db FILENAME, 0
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format:
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db "wb", 0
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; This is the wave file header.
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wave_file:
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db "RIFF"
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dd wave_file_end + SU_LENGTH_IN_SAMPLES * SU_SAMPLE_SIZE * SU_CHANNEL_COUNT - wave_file
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db "WAVE"
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db "fmt "
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wave_format_end:
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dd wave_format_end - wave_file
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%ifdef SU_SAMPLE_FLOAT
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dw WAVE_FORMAT_IEEE_FLOAT
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%else ; SU_SAMPLE_FLOAT
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dw WAVE_FORMAT_PCM
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%endif ; SU_SAMPLE_FLOAT
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dw SU_CHANNEL_COUNT
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dd SU_SAMPLE_RATE
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dd SU_SAMPLE_SIZE * SU_SAMPLE_RATE * SU_CHANNEL_COUNT
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dw SU_SAMPLE_SIZE * SU_CHANNEL_COUNT
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dw SU_SAMPLE_SIZE * 8
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wave_header_end:
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db "data"
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dd wave_file_end + SU_LENGTH_IN_SAMPLES * SU_SAMPLE_SIZE * SU_CHANNEL_COUNT - wave_header_end
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wave_file_end:
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section .text
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symbols:
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extern fopen
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extern fwrite
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extern fclose
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global main
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main:
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; elf32 uses the cdecl calling convention. This is more readable imo ;)
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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 the complete track here.
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mov rdi, sound_buffer
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call su_render_song
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; Now we open the file and save the track.
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mov rsi, format
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mov rdi, filename
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call fopen
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mov qword [file], rax
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; Write header
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mov rcx, qword [file]
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mov rdx, 0x1
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mov rsi, wave_file_end - wave_file
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mov rdi, wave_file
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call fwrite
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; write data
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mov rcx, qword [file]
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mov rdx, 0x1
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mov rsi, SU_LENGTH_IN_SAMPLES * SU_SAMPLE_SIZE * SU_CHANNEL_COUNT
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mov rdi, sound_buffer
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call fwrite
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mov rdi, qword [file]
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call fclose
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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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