diff options
47 files changed, 173 insertions, 58 deletions
@@ -39,7 +39,6 @@ Run setup and leave the default settings. At the "**Select Packages**" step, cho - `make` - `git` - `gcc-core` -- `python` Double click on the text that says "**Skip**" next to each package to select the most recent version to install. @@ -82,7 +81,7 @@ Open **Terminal** and enter the following commands, depending on which distro yo To install the software required for **pokeyellow**: ```bash -sudo apt-get install make gcc git python +sudo apt-get install make gcc git ``` Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install/source) to build **rgbds 0.4.1** from source. @@ -92,7 +91,7 @@ Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install/source) To install the software required for **pokeyellow**: ```bash -sudo zypper install make gcc git python +sudo zypper install make gcc git ``` Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install/source) to build **rgbds 0.4.1** from source. @@ -102,7 +101,7 @@ Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install/source) To install the software required for **pokeyellow**: ```bash -sudo pacman -S make gcc git python +sudo pacman -S make gcc git ``` Then follow the [**rgbds** instructions](https://rgbds.gbdev.io/install/arch) for Arch Linux to install **rgbds 0.4.1**. @@ -133,7 +132,6 @@ If your distro is not listed here, try to find the required software in its repo - `gcc` (or `clang`) - `git` - `rgbds` -- `python` If `rgbds` is not available, you'll need to follow the [**rgbds** instructions](https://rgbds.gbdev.io/install/source) to build **rgbds 0.4.1** from source. @@ -27,9 +27,6 @@ RGBFIX ?= $(RGBDS)rgbfix RGBGFX ?= $(RGBDS)rgbgfx RGBLINK ?= $(RGBDS)rgblink -PYTHON := python -pcm := $(PYTHON) tools/pokemontools/pcm.py pcm - ### Build targets @@ -140,4 +137,4 @@ gfx/surfing_pikachu/surfing_pikachu_3.2bpp: tools/gfx += --trim-whitespace %.wav: ; %.pcm: %.wav - @$(pcm) $< + tools/pcm $< $@ diff --git a/audio/pikachu_cries.asm b/audio/pikachu_cries.asm index 1f6bc2c4..4ccc6181 100644 --- a/audio/pikachu_cries.asm +++ b/audio/pikachu_cries.asm @@ -1,212 +1,172 @@ pcm: MACRO - dw .End - .Start -.Start: +; All of the pcm data has one trailing byte that is never processed. + dw .End - .Start - 1 +.Start \1 -.End: +.End ENDM -; All of the pcm data has one trailing byte that is never processed. - SECTION "Pikachu Cries 1", ROMX PikachuCry1:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_1.pcm" - db $77 ; unused PikachuCry2:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_2.pcm" - db $77 ; unused PikachuCry3:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_3.pcm" - db $03 ; unused PikachuCry4:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_4.pcm" - db $e0 ; unused SECTION "Pikachu Cries 2", ROMX PikachuCry5:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_5.pcm" - db $77 ; unused PikachuCry6:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_6.pcm" - db $77 ; unused PikachuCry7:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_7.pcm" - db $ff ; unused SECTION "Pikachu Cries 3", ROMX PikachuCry8:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_8.pcm" - db $f7 ; unused PikachuCry9:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_9.pcm" - db $f3 ; unused PikachuCry10:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_10.pcm" - db $ff ; unused SECTION "Pikachu Cries 4", ROMX PikachuCry11:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_11.pcm" - db $77 ; unused PikachuCry12:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_12.pcm" - db $ff ; unused PikachuCry13:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_13.pcm" - db $f0 ; unused SECTION "Pikachu Cries 5", ROMX PikachuCry14:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_14.pcm" - db $fc ; unused PikachuCry15:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_15.pcm" - db $77 ; unused + SECTION "Pikachu Cries 6", ROMX PikachuCry16:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_16.pcm" - db $e7 ; unused PikachuCry18:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_18.pcm" - db $00 ; unused PikachuCry22:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_22.pcm" - db $7e ; unused SECTION "Pikachu Cries 7", ROMX PikachuCry20:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_20.pcm" - db $07 ; unused PikachuCry21:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_21.pcm" - db $ff ; unused SECTION "Pikachu Cries 8", ROMX PikachuCry19:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_19.pcm" - db $06 ; unused PikachuCry24:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_24.pcm" - db $e0 ; unused PikachuCry26:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_26.pcm" - db $00 ; unused + SECTION "Pikachu Cries 9", ROMX PikachuCry17:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_17.pcm" - db $00 ; unused PikachuCry23:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_23.pcm" - db $00 ; unused PikachuCry25:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_25.pcm" - db $03 ; unused SECTION "Pikachu Cries 10", ROMX PikachuCry27:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_27.pcm" - db $ff ; unused PikachuCry28:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_28.pcm" - db $1b ; unused PikachuCry29:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_29.pcm" - db $87 ; unused PikachuCry30:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_30.pcm" - db $00 ; unused PikachuCry31:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_31.pcm" - db $00 ; unused + SECTION "Pikachu Cries 11", ROMX PikachuCry32:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_32.pcm" - db $ff ; unused PikachuCry33:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_33.pcm" - db $1f ; unused PikachuCry34:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_34.pcm" - db $01 ; unused PikachuCry41:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_41.pcm" - db $9b ; unused SECTION "Pikachu Cries 12", ROMX PikachuCry35:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_35.pcm" - db $00 ; unused PikachuCry36:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_36.pcm" - db $01 ; unused PikachuCry39:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_39.pcm" - db $0f ; unused SECTION "Pikachu Cries 13", ROMX PikachuCry37:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_37.pcm" - db $3f ; unused PikachuCry38:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_38.pcm" - db $ff ; unused PikachuCry40:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_40.pcm" - db $ff ; unused PikachuCry42:: pcm INCBIN "audio/pikachu_cries/pikachu_cry_42.pcm" - db $00 ; unused diff --git a/audio/pikachu_cries/pikachu_cry_1.wav b/audio/pikachu_cries/pikachu_cry_1.wav Binary files differindex 98714511..4d384ac7 100644 --- a/audio/pikachu_cries/pikachu_cry_1.wav +++ b/audio/pikachu_cries/pikachu_cry_1.wav diff --git a/audio/pikachu_cries/pikachu_cry_10.wav b/audio/pikachu_cries/pikachu_cry_10.wav Binary files differindex e51a2979..452def52 100644 --- a/audio/pikachu_cries/pikachu_cry_10.wav +++ b/audio/pikachu_cries/pikachu_cry_10.wav diff --git a/audio/pikachu_cries/pikachu_cry_11.wav b/audio/pikachu_cries/pikachu_cry_11.wav Binary files differindex 44eece5a..39b6f5c0 100644 --- a/audio/pikachu_cries/pikachu_cry_11.wav +++ b/audio/pikachu_cries/pikachu_cry_11.wav diff --git a/audio/pikachu_cries/pikachu_cry_12.wav b/audio/pikachu_cries/pikachu_cry_12.wav Binary files differindex cad90cfe..6bdcd74b 100644 --- a/audio/pikachu_cries/pikachu_cry_12.wav +++ b/audio/pikachu_cries/pikachu_cry_12.wav diff --git a/audio/pikachu_cries/pikachu_cry_13.wav b/audio/pikachu_cries/pikachu_cry_13.wav Binary files differindex 981768b5..1bdbc65c 100644 --- a/audio/pikachu_cries/pikachu_cry_13.wav +++ b/audio/pikachu_cries/pikachu_cry_13.wav diff --git a/audio/pikachu_cries/pikachu_cry_14.wav b/audio/pikachu_cries/pikachu_cry_14.wav Binary files differindex 3da9a543..38932232 100644 --- a/audio/pikachu_cries/pikachu_cry_14.wav +++ b/audio/pikachu_cries/pikachu_cry_14.wav diff --git a/audio/pikachu_cries/pikachu_cry_15.wav b/audio/pikachu_cries/pikachu_cry_15.wav Binary files differindex 4ef874c3..7424d663 100644 --- a/audio/pikachu_cries/pikachu_cry_15.wav +++ b/audio/pikachu_cries/pikachu_cry_15.wav diff --git a/audio/pikachu_cries/pikachu_cry_16.wav b/audio/pikachu_cries/pikachu_cry_16.wav Binary files differindex baddf17c..d703e1e9 100644 --- a/audio/pikachu_cries/pikachu_cry_16.wav +++ b/audio/pikachu_cries/pikachu_cry_16.wav diff --git a/audio/pikachu_cries/pikachu_cry_17.wav b/audio/pikachu_cries/pikachu_cry_17.wav Binary files differindex f8bd9c73..9558a0ec 100644 --- a/audio/pikachu_cries/pikachu_cry_17.wav +++ b/audio/pikachu_cries/pikachu_cry_17.wav diff --git a/audio/pikachu_cries/pikachu_cry_18.wav b/audio/pikachu_cries/pikachu_cry_18.wav Binary files differindex 69b2d3b8..08e7a1f3 100644 --- a/audio/pikachu_cries/pikachu_cry_18.wav +++ b/audio/pikachu_cries/pikachu_cry_18.wav diff --git a/audio/pikachu_cries/pikachu_cry_19.wav b/audio/pikachu_cries/pikachu_cry_19.wav Binary files differindex a9429132..2bc077bd 100644 --- a/audio/pikachu_cries/pikachu_cry_19.wav +++ b/audio/pikachu_cries/pikachu_cry_19.wav diff --git a/audio/pikachu_cries/pikachu_cry_2.wav b/audio/pikachu_cries/pikachu_cry_2.wav Binary files differindex d95343de..624bf2d4 100644 --- a/audio/pikachu_cries/pikachu_cry_2.wav +++ b/audio/pikachu_cries/pikachu_cry_2.wav diff --git a/audio/pikachu_cries/pikachu_cry_20.wav b/audio/pikachu_cries/pikachu_cry_20.wav Binary files differindex 1c1842e4..44152d7c 100644 --- a/audio/pikachu_cries/pikachu_cry_20.wav +++ b/audio/pikachu_cries/pikachu_cry_20.wav diff --git a/audio/pikachu_cries/pikachu_cry_21.wav b/audio/pikachu_cries/pikachu_cry_21.wav Binary files differindex d74ebc12..72b3dde6 100644 --- a/audio/pikachu_cries/pikachu_cry_21.wav +++ b/audio/pikachu_cries/pikachu_cry_21.wav diff --git a/audio/pikachu_cries/pikachu_cry_22.wav b/audio/pikachu_cries/pikachu_cry_22.wav Binary files differindex 89fa5c77..9c764d04 100644 --- a/audio/pikachu_cries/pikachu_cry_22.wav +++ b/audio/pikachu_cries/pikachu_cry_22.wav diff --git a/audio/pikachu_cries/pikachu_cry_23.wav b/audio/pikachu_cries/pikachu_cry_23.wav Binary files differindex ea092080..4d88f7ae 100644 --- a/audio/pikachu_cries/pikachu_cry_23.wav +++ b/audio/pikachu_cries/pikachu_cry_23.wav diff --git a/audio/pikachu_cries/pikachu_cry_24.wav b/audio/pikachu_cries/pikachu_cry_24.wav Binary files differindex ec51d8cb..b7a31857 100644 --- a/audio/pikachu_cries/pikachu_cry_24.wav +++ b/audio/pikachu_cries/pikachu_cry_24.wav diff --git a/audio/pikachu_cries/pikachu_cry_25.wav b/audio/pikachu_cries/pikachu_cry_25.wav Binary files differindex 77dac608..9b05e306 100644 --- a/audio/pikachu_cries/pikachu_cry_25.wav +++ b/audio/pikachu_cries/pikachu_cry_25.wav diff --git a/audio/pikachu_cries/pikachu_cry_26.wav b/audio/pikachu_cries/pikachu_cry_26.wav Binary files differindex 9a9a0776..89dec6f3 100644 --- a/audio/pikachu_cries/pikachu_cry_26.wav +++ b/audio/pikachu_cries/pikachu_cry_26.wav diff --git a/audio/pikachu_cries/pikachu_cry_27.wav b/audio/pikachu_cries/pikachu_cry_27.wav Binary files differindex 44a79ee0..be7d2168 100644 --- a/audio/pikachu_cries/pikachu_cry_27.wav +++ b/audio/pikachu_cries/pikachu_cry_27.wav diff --git a/audio/pikachu_cries/pikachu_cry_28.wav b/audio/pikachu_cries/pikachu_cry_28.wav Binary files differindex ccf8bde2..1117c422 100644 --- a/audio/pikachu_cries/pikachu_cry_28.wav +++ b/audio/pikachu_cries/pikachu_cry_28.wav diff --git a/audio/pikachu_cries/pikachu_cry_29.wav b/audio/pikachu_cries/pikachu_cry_29.wav Binary files differindex fb3375b3..df3ab87c 100644 --- a/audio/pikachu_cries/pikachu_cry_29.wav +++ b/audio/pikachu_cries/pikachu_cry_29.wav diff --git a/audio/pikachu_cries/pikachu_cry_3.wav b/audio/pikachu_cries/pikachu_cry_3.wav Binary files differindex d3423966..20429bfa 100644 --- a/audio/pikachu_cries/pikachu_cry_3.wav +++ b/audio/pikachu_cries/pikachu_cry_3.wav diff --git a/audio/pikachu_cries/pikachu_cry_30.wav b/audio/pikachu_cries/pikachu_cry_30.wav Binary files differindex 9bdafdc2..d420f509 100644 --- a/audio/pikachu_cries/pikachu_cry_30.wav +++ b/audio/pikachu_cries/pikachu_cry_30.wav diff --git a/audio/pikachu_cries/pikachu_cry_31.wav b/audio/pikachu_cries/pikachu_cry_31.wav Binary files differindex 2853bc0b..658c48a2 100644 --- a/audio/pikachu_cries/pikachu_cry_31.wav +++ b/audio/pikachu_cries/pikachu_cry_31.wav diff --git a/audio/pikachu_cries/pikachu_cry_32.wav b/audio/pikachu_cries/pikachu_cry_32.wav Binary files differindex 8ded504e..52ff34bb 100644 --- a/audio/pikachu_cries/pikachu_cry_32.wav +++ b/audio/pikachu_cries/pikachu_cry_32.wav diff --git a/audio/pikachu_cries/pikachu_cry_33.wav b/audio/pikachu_cries/pikachu_cry_33.wav Binary files differindex 9be38b10..f7a13cb3 100644 --- a/audio/pikachu_cries/pikachu_cry_33.wav +++ b/audio/pikachu_cries/pikachu_cry_33.wav diff --git a/audio/pikachu_cries/pikachu_cry_34.wav b/audio/pikachu_cries/pikachu_cry_34.wav Binary files differindex 45986668..d6a66bfb 100644 --- a/audio/pikachu_cries/pikachu_cry_34.wav +++ b/audio/pikachu_cries/pikachu_cry_34.wav diff --git a/audio/pikachu_cries/pikachu_cry_35.wav b/audio/pikachu_cries/pikachu_cry_35.wav Binary files differindex 91b4d35b..0a6a4559 100644 --- a/audio/pikachu_cries/pikachu_cry_35.wav +++ b/audio/pikachu_cries/pikachu_cry_35.wav diff --git a/audio/pikachu_cries/pikachu_cry_36.wav b/audio/pikachu_cries/pikachu_cry_36.wav Binary files differindex 789f9ca6..d59194e7 100644 --- a/audio/pikachu_cries/pikachu_cry_36.wav +++ b/audio/pikachu_cries/pikachu_cry_36.wav diff --git a/audio/pikachu_cries/pikachu_cry_37.wav b/audio/pikachu_cries/pikachu_cry_37.wav Binary files differindex bc004c25..ea4f20c4 100644 --- a/audio/pikachu_cries/pikachu_cry_37.wav +++ b/audio/pikachu_cries/pikachu_cry_37.wav diff --git a/audio/pikachu_cries/pikachu_cry_38.wav b/audio/pikachu_cries/pikachu_cry_38.wav Binary files differindex b7d23e25..63f5a4f8 100644 --- a/audio/pikachu_cries/pikachu_cry_38.wav +++ b/audio/pikachu_cries/pikachu_cry_38.wav diff --git a/audio/pikachu_cries/pikachu_cry_39.wav b/audio/pikachu_cries/pikachu_cry_39.wav Binary files differindex da02dee2..3d8f17bb 100644 --- a/audio/pikachu_cries/pikachu_cry_39.wav +++ b/audio/pikachu_cries/pikachu_cry_39.wav diff --git a/audio/pikachu_cries/pikachu_cry_4.wav b/audio/pikachu_cries/pikachu_cry_4.wav Binary files differindex 8cfc1041..8f0ac046 100644 --- a/audio/pikachu_cries/pikachu_cry_4.wav +++ b/audio/pikachu_cries/pikachu_cry_4.wav diff --git a/audio/pikachu_cries/pikachu_cry_40.wav b/audio/pikachu_cries/pikachu_cry_40.wav Binary files differindex a048a408..719382ca 100644 --- a/audio/pikachu_cries/pikachu_cry_40.wav +++ b/audio/pikachu_cries/pikachu_cry_40.wav diff --git a/audio/pikachu_cries/pikachu_cry_41.wav b/audio/pikachu_cries/pikachu_cry_41.wav Binary files differindex bbf5eabd..a12208c8 100644 --- a/audio/pikachu_cries/pikachu_cry_41.wav +++ b/audio/pikachu_cries/pikachu_cry_41.wav diff --git a/audio/pikachu_cries/pikachu_cry_42.wav b/audio/pikachu_cries/pikachu_cry_42.wav Binary files differindex cd18baa0..8cae8eda 100644 --- a/audio/pikachu_cries/pikachu_cry_42.wav +++ b/audio/pikachu_cries/pikachu_cry_42.wav diff --git a/audio/pikachu_cries/pikachu_cry_5.wav b/audio/pikachu_cries/pikachu_cry_5.wav Binary files differindex a2293acd..64959015 100644 --- a/audio/pikachu_cries/pikachu_cry_5.wav +++ b/audio/pikachu_cries/pikachu_cry_5.wav diff --git a/audio/pikachu_cries/pikachu_cry_6.wav b/audio/pikachu_cries/pikachu_cry_6.wav Binary files differindex 814d7139..d91e2852 100644 --- a/audio/pikachu_cries/pikachu_cry_6.wav +++ b/audio/pikachu_cries/pikachu_cry_6.wav diff --git a/audio/pikachu_cries/pikachu_cry_7.wav b/audio/pikachu_cries/pikachu_cry_7.wav Binary files differindex 6ffa781f..4b61cfc5 100644 --- a/audio/pikachu_cries/pikachu_cry_7.wav +++ b/audio/pikachu_cries/pikachu_cry_7.wav diff --git a/audio/pikachu_cries/pikachu_cry_8.wav b/audio/pikachu_cries/pikachu_cry_8.wav Binary files differindex 04218660..20a4d345 100644 --- a/audio/pikachu_cries/pikachu_cry_8.wav +++ b/audio/pikachu_cries/pikachu_cry_8.wav diff --git a/audio/pikachu_cries/pikachu_cry_9.wav b/audio/pikachu_cries/pikachu_cry_9.wav Binary files differindex 484c92bc..1f4a8238 100644 --- a/audio/pikachu_cries/pikachu_cry_9.wav +++ b/audio/pikachu_cries/pikachu_cry_9.wav diff --git a/tools/Makefile b/tools/Makefile index 13bab1fb..f8dceb1a 100644 --- a/tools/Makefile +++ b/tools/Makefile @@ -1,9 +1,9 @@ .PHONY: all clean CC := gcc -CFLAGS := -O3 -std=c99 -Wall -Wextra +CFLAGS := -O3 -std=c99 -Wall -Wextra -pedantic -tools := scan_includes gfx pkmncompress +tools := scan_includes gfx pkmncompress pcm all: $(tools) @: diff --git a/tools/pcm.c b/tools/pcm.c new file mode 100644 index 00000000..a14e291d --- /dev/null +++ b/tools/pcm.c @@ -0,0 +1,160 @@ +#include <stdio.h> +#include <stdlib.h> +#include <stdint.h> +#include <string.h> + +#define CHUNKID(b1, b2, b3, b4) \ + (uint32_t)((uint32_t)(b1) | ((uint32_t)(b2) << 8) | \ + ((uint32_t)(b3) << 16) | ((uint32_t)(b4) << 24)) + +size_t file_size(FILE *f) { + if (fseek(f, 0, SEEK_END) == -1) return 0; + long f_size = ftell(f); + if (f_size == -1) return 0; + if (fseek(f, 0, SEEK_SET) == -1) return 0; + return (size_t)f_size; +} + +int32_t get_uint16le(uint8_t *data, size_t size, size_t i) { + return i + 2 >= size ? -1 : + (int32_t)data[i] | ((int32_t)data[i+1] << 8); +} + +int64_t get_uint32le(uint8_t *data, size_t size, size_t i) { + return i + 4 >= size ? -1 : + (int64_t)data[i] | ((int64_t)data[i+1] << 8) | + ((int64_t)data[i+2] << 16) | ((int64_t)data[i+3] << 24); +} + +uint8_t *wav2pcm(uint8_t *wavdata, size_t wavsize, size_t *pcmsize) { + int64_t fourcc = get_uint32le(wavdata, wavsize, 0); + if (fourcc != CHUNKID('R', 'I', 'F', 'F')) { + fputs("WAV file does not start with 'RIFF'\n", stderr); + return NULL; + } + + int64_t waveid = get_uint32le(wavdata, wavsize, 8); + if (waveid != CHUNKID('W', 'A', 'V', 'E')) { + fputs("RIFF chunk does not start with 'WAVE'\n", stderr); + return NULL; + } + + size_t sample_offset = 0; + int64_t num_samples = 0; + + size_t riffsize = (size_t)get_uint32le(wavdata, wavsize, 4) + 8; + for (size_t i = 12; i < riffsize;) { + int64_t chunkid = get_uint32le(wavdata, wavsize, i); + int64_t chunksize = get_uint32le(wavdata, wavsize, i+4); + i += 8; + if (chunksize == -1) { + fputs("failed to read sub-chunk size\n", stderr); + return NULL; + } + + // require 22050 Hz 8-bit PCM WAV audio + if (chunkid == CHUNKID('f', 'm', 't', ' ')) { + int32_t audio_format = get_uint16le(wavdata, wavsize, i); + if (audio_format != 1) { + fputs("WAV data is not PCM format\n", stderr); + return NULL; + } + int32_t num_channels = get_uint16le(wavdata, wavsize, i+2); + if (num_channels != 1) { + fputs("WAV data is not mono\n", stderr); + return NULL; + } + int64_t sample_rate = get_uint32le(wavdata, wavsize, i+4); + if (sample_rate != 22050) { + fputs("WAV data is not 22050 Hz\n", stderr); + return NULL; + } + int32_t bits_per_sample = get_uint16le(wavdata, wavsize, i+14); + if (bits_per_sample != 8) { + fputs("WAV data is not 8-bit\n", stderr); + return NULL; + } + } + + else if (chunkid == CHUNKID('d', 'a', 't', 'a')) { + sample_offset = i; + num_samples = chunksize; + break; + } + + i += (size_t)chunksize; + } + + if (!num_samples) { + fputs("WAV data has no PCM samples\n", stderr); + return NULL; + } + + // pack 8 WAV samples per PCM byte, clamping each to 0 or 1 + *pcmsize = (size_t)((num_samples + 7) / 8); + uint8_t *pcmdata = malloc(*pcmsize); + for (int64_t i = 0; i < num_samples; i += 8) { + uint8_t v = 0; + for (int64_t j = 0; j < 8 && i + j < num_samples; j++) { + v |= (wavdata[sample_offset + i + j] > 0x80) << (7 - j); + } + pcmdata[i / 8] = v; + } + + return pcmdata; +} + +int main(int argc, char *argv[]) { + if (argc != 3) { + fprintf(stderr, "Usage: %s infile.wav outfile.pcm\n", argv[0]); + return EXIT_FAILURE; + } + + char *wavname = argv[1]; + char *pcmname = argv[2]; + + FILE *wavfile = fopen(wavname, "rb"); + if (!wavfile) { + fprintf(stderr, "failed to open for reading: '%s'\n", wavname); + return EXIT_FAILURE; + } + + size_t wavsize = file_size(wavfile); + if (!wavsize) { + fclose(wavfile); + fprintf(stderr, "failed to get file size: '%s'\n", wavname); + return EXIT_FAILURE; + } + + uint8_t *wavdata = malloc(wavsize); + size_t readsize = fread(wavdata, 1, wavsize, wavfile); + fclose(wavfile); + if (readsize != wavsize) { + fprintf(stderr, "failed to read: '%s'\n", wavname); + return EXIT_FAILURE; + } + + size_t pcmsize; + uint8_t *pcmdata = wav2pcm(wavdata, wavsize, &pcmsize); + free(wavdata); + if (!pcmdata) { + fprintf(stderr, "failed to convert: '%s'\n", wavname); + return EXIT_FAILURE; + } + + FILE *pcmfile = fopen(pcmname, "wb"); + if (!pcmfile) { + fprintf(stderr, "failed to open for writing: '%s'\n", pcmname); + return EXIT_FAILURE; + } + + size_t writesize = fwrite(pcmdata, 1, pcmsize, pcmfile); + free(pcmdata); + fclose(pcmfile); + if (writesize != pcmsize) { + fprintf(stderr, "failed to write: '%s'\n", pcmname); + return EXIT_FAILURE; + } + + return EXIT_SUCCESS; +} |