diff --git a/libretro.c b/libretro.c index c368d8f..305adee 100644 --- a/libretro.c +++ b/libretro.c @@ -57,13 +57,11 @@ static int32_t samplerate = (((SNES_CLOCK_SPEED * 6) / (32 * ONE_APU_CYCLE))); static unsigned frameskip_type = 0; static unsigned frameskip_threshold = 0; static uint16_t frameskip_counter = 0; +static unsigned frameskip_interval = 0; static bool retro_audio_buff_active = false; static unsigned retro_audio_buff_occupancy = 0; static bool retro_audio_buff_underrun = false; -/* Maximum number of consecutive frames that - * can be skipped */ -#define FRAMESKIP_MAX 30 static unsigned retro_audio_latency = 0; static bool update_audio_latency = false; @@ -341,6 +339,7 @@ void retro_deinit(void) frameskip_type = 0; frameskip_threshold = 0; frameskip_counter = 0; + frameskip_interval = 0; retro_audio_buff_active = false; retro_audio_buff_occupancy = 0; retro_audio_buff_underrun = false; @@ -414,7 +413,7 @@ static void check_variables(bool first_run) { if (strcmp(var.value, "auto") == 0) frameskip_type = 1; - else if (strcmp(var.value, "manual") == 0) + else if (strcmp(var.value, "auto_threshold") == 0) frameskip_type = 2; } @@ -426,6 +425,14 @@ static void check_variables(bool first_run) if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) frameskip_threshold = strtol(var.value, NULL, 10); + var.key = "catsfc_frameskip_interval"; + var.value = NULL; + + frameskip_interval = 4; + + if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) + frameskip_interval = strtol(var.value, NULL, 10); + var.key = "catsfc_overclock_cycles"; var.value = NULL; @@ -531,7 +538,7 @@ void retro_run(void) if (skip_frame) { - if(frameskip_counter < FRAMESKIP_MAX) + if(frameskip_counter < frameskip_interval) { IPPU.RenderThisFrame = false; frameskip_counter++; diff --git a/libretro_core_options.h b/libretro_core_options.h index 032cefd..14bf8d8 100644 --- a/libretro_core_options.h +++ b/libretro_core_options.h @@ -71,9 +71,9 @@ struct retro_core_option_definition option_defs_us[] = { "Frameskip", "Skip frames to avoid audio buffer under-run (crackling). Improves performance at the expense of visual smoothness. 'Auto' skips frames when advised by the frontend. 'Manual' utilises the 'Frameskip Threshold (%)' setting.", { - { "disabled", NULL }, - { "auto", "Auto" }, - { "manual", "Manual" }, + { "disabled", NULL }, + { "auto", "Auto" }, + { "auto_threshold", "Threshold" }, { NULL, NULL }, }, "disabled" @@ -103,6 +103,26 @@ struct retro_core_option_definition option_defs_us[] = { }, "33" }, + { + "catsfc_frameskip_interval", + "Frameskip Interval", + "The maximum number of frames that can be skipped before a new frame is rendered.", + { + { "0", NULL }, + { "1", NULL }, + { "2", NULL }, + { "3", NULL }, + { "4", NULL }, + { "5", NULL }, + { "6", NULL }, + { "7", NULL }, + { "8", NULL }, + { "9", NULL }, + { "10", NULL }, + { NULL, NULL }, + }, + "4" + }, { "catsfc_overclock_cycles", "Reduce Slowdown (Hack, Unsafe, Restart)",