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Configurable rewind stuff.

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This commit is contained in:
Themaister 2011-01-31 18:06:57 +01:00
parent 849e9aa734
commit 47d0b12d40
5 changed files with 46 additions and 4 deletions
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7
config.def.h
View file

@ -146,6 +146,13 @@ static const bool audio_sync = true;
// Defines the quality (and cpu reqirements) of samplerate conversion.
#define SAMPLERATE_QUALITY SRC_LINEAR
// Enables use of rewind. This will incur some memory footprint depending on the save state buffer.
// This rewind only works when using bSNES core atm.
static const bool rewind_enable = false;
// The buffer size for the rewind buffer. This needs to be about 15-20MB per minute. Very game dependant.
static const unsigned rewind_buffer_size = 20 << 20; // 20MiB

3
general.h
View file

@ -85,6 +85,9 @@ struct settings
} input;
char libsnes[256];
bool rewind_enable;
unsigned rewind_buffer_size;
};
enum ssnes_game_type

14
settings.c
View file

@ -124,6 +124,9 @@ static void set_defaults(void)
g_settings.audio.sync = audio_sync;
g_settings.audio.src_quality = SAMPLERATE_QUALITY;
g_settings.rewind_enable = rewind_enable;
g_settings.rewind_buffer_size = rewind_buffer_size;
assert(sizeof(g_settings.input.binds[0]) >= sizeof(snes_keybinds_1));
assert(sizeof(g_settings.input.binds[1]) >= sizeof(snes_keybinds_2));
assert(sizeof(g_settings.input.binds[2]) >= sizeof(snes_keybinds_3));
@ -372,6 +375,12 @@ static void parse_config_file(void)
free(tmp_str);
}
if (config_get_bool(conf, "rewind_enable", &tmp_bool))
g_settings.rewind_enable = true;
if (config_get_int(conf, "rewind_buffer_size", &tmp_int))
g_settings.rewind_buffer_size = tmp_int * 1000000;
read_keybinds(conf);
config_file_free(conf);
@ -411,6 +420,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
DECLARE_BIND(toggle_fullscreen, SSNES_FULLSCREEN_TOGGLE_KEY)
DECLARE_BIND(rate_step_up, SSNES_AUDIO_INPUT_RATE_PLUS)
DECLARE_BIND(rate_step_down, SSNES_AUDIO_INPUT_RATE_MINUS)
DECLARE_BIND(rewind, SSNES_REWIND)
},
{
DECLARE_BIND(player2_a, SNES_DEVICE_ID_JOYPAD_A)
@ -434,6 +444,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
DECLARE_BIND(toggle_fullscreen, SSNES_FULLSCREEN_TOGGLE_KEY)
DECLARE_BIND(rate_step_up, SSNES_AUDIO_INPUT_RATE_PLUS)
DECLARE_BIND(rate_step_down, SSNES_AUDIO_INPUT_RATE_MINUS)
DECLARE_BIND(rewind, SSNES_REWIND)
},
{
DECLARE_BIND(player3_a, SNES_DEVICE_ID_JOYPAD_A)
@ -457,6 +468,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
DECLARE_BIND(toggle_fullscreen, SSNES_FULLSCREEN_TOGGLE_KEY)
DECLARE_BIND(rate_step_up, SSNES_AUDIO_INPUT_RATE_PLUS)
DECLARE_BIND(rate_step_down, SSNES_AUDIO_INPUT_RATE_MINUS)
DECLARE_BIND(rewind, SSNES_REWIND)
},
{
DECLARE_BIND(player4_a, SNES_DEVICE_ID_JOYPAD_A)
@ -480,6 +492,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
DECLARE_BIND(toggle_fullscreen, SSNES_FULLSCREEN_TOGGLE_KEY)
DECLARE_BIND(rate_step_up, SSNES_AUDIO_INPUT_RATE_PLUS)
DECLARE_BIND(rate_step_down, SSNES_AUDIO_INPUT_RATE_MINUS)
DECLARE_BIND(rewind, SSNES_REWIND)
},
{
DECLARE_BIND(player5_a, SNES_DEVICE_ID_JOYPAD_A)
@ -503,6 +516,7 @@ static const struct bind_map bind_maps[MAX_PLAYERS][MAX_BINDS - 1] = {
DECLARE_BIND(toggle_fullscreen, SSNES_FULLSCREEN_TOGGLE_KEY)
DECLARE_BIND(rate_step_up, SSNES_AUDIO_INPUT_RATE_PLUS)
DECLARE_BIND(rate_step_down, SSNES_AUDIO_INPUT_RATE_MINUS)
DECLARE_BIND(rewind, SSNES_REWIND)
},
};

14
ssnes.c
View file

@ -643,10 +643,16 @@ static void deinit_msg_queue(void)
static void init_rewind(void)
{
size_t serial_size = snes_serialize_size();
g_extern.state_buf = malloc(serial_size);
snes_serialize(g_extern.state_buf, serial_size);
g_extern.state_manager = state_manager_new(serial_size, 10 << 20, g_extern.state_buf);
if (g_settings.rewind_enable)
{
size_t serial_size = snes_serialize_size();
g_extern.state_buf = malloc(serial_size);
snes_serialize(g_extern.state_buf, serial_size);
SSNES_LOG("Initing rewind buffer with size: %u MB\n", (unsigned)g_settings.rewind_buffer_size / 1000000);
g_extern.state_manager = state_manager_new(serial_size, g_settings.rewind_buffer_size, g_extern.state_buf);
if (!g_extern.state_manager)
SSNES_WARN("Failed to init rewind buffer. Rewinding will be disabled!\n");
}
}
static void deinit_rewind(void)

12
ssnes.cfg
View file

@ -190,3 +190,15 @@
# Decrease/increase input sample rate on the fly. Amount to decrease/increase is defined by audio_rate_step.
# input_rate_step_up = kp_plus
# input_rate_step_down = kp_minus
# Enable rewinding. This will take a performance hit when playing, so it is disabled by default.
# Do note that rewinding will only work properly when using bSNES libsnes core atm.
# rewind_enable = false
# Rewinding buffer size in megabytes. Bigger rewinding buffer means you can rewind longer.
# The buffer should be approx. 20MB per minute of buffer time.
# rewind_buffer_size = 20
# Hold button down to rewind. Rewinding must be enabled.
# input_rewind = r