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/* date = April 15th 2025 4:50 pm */
#ifndef LINUX_HANDMADE_H
#define LINUX_HANDMADE_H
struct linux_game_code
{
game_update_and_render *UpdateAndRender;
game_get_sound_samples *GetSoundSamples;
void *LibraryHandle;
struct timespec LibraryLastWriteTime;
};
enum linux_gamepad_axes_enum
{
LSTICKX,
LSTICKY,
RSTICKX,
RSTICKY,
LSHOULDER,
RSHOULDER,
DPADX,
DPADY,
AXES_COUNT
};
struct linux_gamepad_axis
{
s32 Minimum;
s32 Maximum;
s32 Fuzz;
s32 Flat;
};
struct linux_gamepad
{
int FileFD;
char FilePath[PATH_MAX];
char Name[256];
int SupportsRumble;
linux_gamepad_axis Axes[AXES_COUNT];
};
// IMPORTANT(luca): Copy Pasted from alsa-lib; This is a hack to access the hw_ptr and to
// understand what alsa-lib functions are doing internally better through the debugger.
typedef struct { unsigned char pad[sizeof(time_t) - sizeof(int)]; } __time_pad;
typedef struct
{
snd_pcm_state_t state; /* stream state */
__time_pad pad1; /* align to timespec */
struct timespec trigger_tstamp; /* time when stream was started/stopped/paused */
struct timespec tstamp; /* reference timestamp */
snd_pcm_uframes_t appl_ptr; /* appl ptr */
snd_pcm_uframes_t hw_ptr; /* hw ptr */
snd_pcm_sframes_t delay; /* current delay in frames */
snd_pcm_uframes_t avail; /* number of frames available */
snd_pcm_uframes_t avail_max; /* max frames available on hw since last status */
snd_pcm_uframes_t overrange; /* count of ADC (capture) overrange detections from last status */
snd_pcm_state_t suspended_state; /* suspended stream state */
__u32 audio_tstamp_data; /* needed for 64-bit alignment, used for configs/report to/from userspace */
struct timespec audio_tstamp; /* sample counter, wall clock, PHC or on-demand sync'ed */
struct timespec driver_tstamp; /* useful in case reference system tstamp is reported with delay */
__u32 audio_tstamp_accuracy; /* in ns units, only valid if indicated in audio_tstamp_data */
unsigned char reserved[52-2*sizeof(struct timespec)]; /* must be filled with zero */
} sound_status;
#endif //LINUX_HANDMADE_H
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