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RetroArch/libretro_version_1.c

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2015 - Daniel De Matteis
* Copyright (C) 2012-2015 - Michael Lelli
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <boolean.h>
#include "libretro.h"
#include "dynamic.h"
#include "retro.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#include "general.h"
#include "retroarch.h"
#include "performance.h"
#include "input/keyboard_line.h"
#include "audio/utils.h"
#include "retroarch_logger.h"
#include "intl/intl.h"
#ifdef HAVE_NETPLAY
#include "netplay.h"
#endif
/**
* video_frame:
* @data : pointer to data of the video frame.
* @width : width of the video frame.
* @height : height of the video frame.
* @pitch : pitch of the video frame.
*
* Video frame render callback function.
**/
static void video_frame(const void *data, unsigned width,
unsigned height, size_t pitch)
{
const char *msg = NULL;
if (!driver.video_active)
return;
g_extern.frame_cache.data = data;
g_extern.frame_cache.width = width;
g_extern.frame_cache.height = height;
g_extern.frame_cache.pitch = pitch;
if (g_extern.system.pix_fmt == RETRO_PIXEL_FORMAT_0RGB1555 &&
data && data != RETRO_HW_FRAME_BUFFER_VALID)
{
RARCH_PERFORMANCE_INIT(video_frame_conv);
RARCH_PERFORMANCE_START(video_frame_conv);
driver.scaler.in_width = width;
driver.scaler.in_height = height;
driver.scaler.out_width = width;
driver.scaler.out_height = height;
driver.scaler.in_stride = pitch;
driver.scaler.out_stride = width * sizeof(uint16_t);
scaler_ctx_scale(&driver.scaler, driver.scaler_out, data);
data = driver.scaler_out;
pitch = driver.scaler.out_stride;
RARCH_PERFORMANCE_STOP(video_frame_conv);
}
/* Slightly messy code,
* but we really need to do processing before blocking on VSync
* for best possible scheduling.
*/
if (driver.recording_data && (!g_extern.filter.filter
|| !g_settings.video.post_filter_record || !data
|| g_extern.record_gpu_buffer)
)
rarch_recording_dump_frame(data, width, height, pitch);
msg = msg_queue_pull(g_extern.msg_queue);
driver.current_msg = msg;
if (g_extern.filter.filter && data)
{
unsigned owidth = 0, oheight = 0, opitch = 0;
rarch_softfilter_get_output_size(g_extern.filter.filter,
&owidth, &oheight, width, height);
opitch = owidth * g_extern.filter.out_bpp;
RARCH_PERFORMANCE_INIT(softfilter_process);
RARCH_PERFORMANCE_START(softfilter_process);
rarch_softfilter_process(g_extern.filter.filter,
g_extern.filter.buffer, opitch,
data, width, height, pitch);
RARCH_PERFORMANCE_STOP(softfilter_process);
if (driver.recording_data && g_settings.video.post_filter_record)
rarch_recording_dump_frame(g_extern.filter.buffer,
owidth, oheight, opitch);
data = g_extern.filter.buffer;
width = owidth;
height = oheight;
pitch = opitch;
}
if (!driver.video->frame(driver.video_data, data, width, height, pitch, msg))
driver.video_active = false;
}
/*
* readjust_audio_input_rate:
*
* Readjust the audio input rate.
*/
static void readjust_audio_input_rate(void)
{
int avail = driver.audio->write_avail(driver.audio_data);
//RARCH_LOG_OUTPUT("Audio buffer is %u%% full\n",
// (unsigned)(100 - (avail * 100) / g_extern.audio_data.driver_buffer_size));
unsigned write_idx = g_extern.measure_data.buffer_free_samples_count++ &
(AUDIO_BUFFER_FREE_SAMPLES_COUNT - 1);
int half_size = g_extern.audio_data.driver_buffer_size / 2;
int delta_mid = avail - half_size;
double direction = (double)delta_mid / half_size;
double adjust = 1.0 + g_settings.audio.rate_control_delta *
direction;
g_extern.measure_data.buffer_free_samples[write_idx] = avail;
g_extern.audio_data.src_ratio = g_extern.audio_data.orig_src_ratio * adjust;
//RARCH_LOG_OUTPUT("New rate: %lf, Orig rate: %lf\n",
// g_extern.audio_data.src_ratio, g_extern.audio_data.orig_src_ratio);
}
/**
* audio_flush:
* @data : pointer to audio buffer.
* @right : amount of samples to write.
*
* Writes audio samples to audio driver. Will first
* perform DSP processing (if enabled) and resampling.
*
* Returns: true (1) if audio samples were written to the audio
* driver, false (0) in case of an error.
**/
static bool audio_flush(const int16_t *data, size_t samples)
{
const void *output_data = NULL;
unsigned output_frames = 0;
size_t output_size = sizeof(float);
struct resampler_data src_data = {0};
struct rarch_dsp_data dsp_data = {0};
if (driver.recording_data)
{
struct ffemu_audio_data ffemu_data = {0};
ffemu_data.data = data;
ffemu_data.frames = samples / 2;
if (driver.recording && driver.recording->push_audio)
driver.recording->push_audio(driver.recording_data, &ffemu_data);
}
if (g_extern.is_paused || g_extern.audio_data.mute)
return true;
if (!driver.audio_active || !g_extern.audio_data.data)
return false;
RARCH_PERFORMANCE_INIT(audio_convert_s16);
RARCH_PERFORMANCE_START(audio_convert_s16);
audio_convert_s16_to_float(g_extern.audio_data.data, data, samples,
g_extern.audio_data.volume_gain);
RARCH_PERFORMANCE_STOP(audio_convert_s16);
src_data.data_in = g_extern.audio_data.data;
src_data.input_frames = samples >> 1;
dsp_data.input = g_extern.audio_data.data;
dsp_data.input_frames = samples >> 1;
if (g_extern.audio_data.dsp)
{
RARCH_PERFORMANCE_INIT(audio_dsp);
RARCH_PERFORMANCE_START(audio_dsp);
rarch_dsp_filter_process(g_extern.audio_data.dsp, &dsp_data);
RARCH_PERFORMANCE_STOP(audio_dsp);
if (dsp_data.output)
{
src_data.data_in = dsp_data.output;
src_data.input_frames = dsp_data.output_frames;
}
}
src_data.data_out = g_extern.audio_data.outsamples;
if (g_extern.audio_data.rate_control)
readjust_audio_input_rate();
src_data.ratio = g_extern.audio_data.src_ratio;
if (g_extern.is_slowmotion)
src_data.ratio *= g_settings.slowmotion_ratio;
RARCH_PERFORMANCE_INIT(resampler_proc);
RARCH_PERFORMANCE_START(resampler_proc);
rarch_resampler_process(driver.resampler,
driver.resampler_data, &src_data);
RARCH_PERFORMANCE_STOP(resampler_proc);
output_data = g_extern.audio_data.outsamples;
output_frames = src_data.output_frames;
if (!g_extern.audio_data.use_float)
{
RARCH_PERFORMANCE_INIT(audio_convert_float);
RARCH_PERFORMANCE_START(audio_convert_float);
audio_convert_float_to_s16(g_extern.audio_data.conv_outsamples,
(const float*)output_data, output_frames * 2);
RARCH_PERFORMANCE_STOP(audio_convert_float);
output_data = g_extern.audio_data.conv_outsamples;
output_size = sizeof(int16_t);
}
if (driver.audio->write(driver.audio_data, output_data,
output_frames * output_size * 2) < 0)
{
RARCH_ERR(RETRO_LOG_AUDIO_WRITE_FAILED);
return false;
}
return true;
}
#define write_audio(data, samples) (driver.audio_active = audio_flush((data), (samples)) && driver.audio_active)
/**
* retro_flush_audio:
* @data : pointer to audio buffer.
* @samples : amount of samples to write.
*
* Writes audio samples to audio driver. Will first
* perform DSP processing (if enabled) and resampling.
*
* driver.audio_active will be set to false (0) in case
* of an error, otherwise will be set to true (1).
**/
void retro_flush_audio(const int16_t *data, size_t samples)
{
write_audio(data, samples);
}
/**
* audio_sample:
* @left : value of the left audio channel.
* @right : value of the right audio channel.
*
* Audio sample render callback function.
**/
static void audio_sample(int16_t left, int16_t right)
{
g_extern.audio_data.conv_outsamples[g_extern.audio_data.data_ptr++] = left;
g_extern.audio_data.conv_outsamples[g_extern.audio_data.data_ptr++] = right;
if (g_extern.audio_data.data_ptr < g_extern.audio_data.chunk_size)
return;
write_audio(g_extern.audio_data.conv_outsamples, g_extern.audio_data.data_ptr);
g_extern.audio_data.data_ptr = 0;
}
/**
* audio_sample_batch:
* @data : pointer to audio buffer.
* @frames : amount of audio frames to push.
*
* Batched audio sample render callback function.
*
* Returns: amount of frames sampled. Will be equal to @frames
* unless @frames exceeds (AUDIO_CHUNK_SIZE_NONBLOCKING / 2).
**/
static size_t audio_sample_batch(const int16_t *data, size_t frames)
{
if (frames > (AUDIO_CHUNK_SIZE_NONBLOCKING >> 1))
frames = AUDIO_CHUNK_SIZE_NONBLOCKING >> 1;
write_audio(data, frames << 1);
return frames;
}
/**
* audio_sample_rewind:
* @left : value of the left audio channel.
* @right : value of the right audio channel.
*
* Audio sample render callback function (rewind version). This callback
* function will be used instead of audio_sample when rewinding is activated.
**/
static void audio_sample_rewind(int16_t left, int16_t right)
{
g_extern.audio_data.rewind_buf[--g_extern.audio_data.rewind_ptr] = right;
g_extern.audio_data.rewind_buf[--g_extern.audio_data.rewind_ptr] = left;
}
/**
* audio_sample_batch_rewind:
* @data : pointer to audio buffer.
* @frames : amount of audio frames to push.
*
* Batched audio sample render callback function (rewind version). This callback
* function will be used instead of audio_sample_batch when rewinding is activated.
*
* Returns: amount of frames sampled. Will be equal to @frames
* unless @frames exceeds (AUDIO_CHUNK_SIZE_NONBLOCKING / 2).
**/
static size_t audio_sample_batch_rewind(const int16_t *data, size_t frames)
{
size_t i;
size_t samples = frames << 1;
for (i = 0; i < samples; i++)
g_extern.audio_data.rewind_buf[--g_extern.audio_data.rewind_ptr] = data[i];
return frames;
}
/**
* input_apply_turbo:
* @port : user number
* @id : identifier of the key
* @res : boolean return value. FIXME/TODO: to be refactored.
*
* Apply turbo button if activated.
*
* If turbo button is held, all buttons pressed except
* for D-pad will go into a turbo mode. Until the button is
* released again, the input state will be modulated by a
* periodic pulse defined by the configured duty cycle.
*
* Returns: 1 (true) if turbo button is enabled for this
* key ID, otherwise the value of @res will be returned.
*
**/
static bool input_apply_turbo(unsigned port, unsigned id, bool res)
{
if (res && g_extern.turbo_frame_enable[port])
g_extern.turbo_enable[port] |= (1 << id);
else if (!res)
g_extern.turbo_enable[port] &= ~(1 << id);
if (g_extern.turbo_enable[port] & (1 << id))
return res && ((g_extern.turbo_count % g_settings.input.turbo_period)
< g_settings.input.turbo_duty_cycle);
return res;
}
/**
* input_state:
* @port : user number.
* @device : device identifier of user.
* @idx : index value of user.
* @id : identifier of key pressed by user.
*
* Input state callback function.
*
* Returns: Non-zero if the given key (identified by @id) was pressed by the user
* (assigned to @port).
**/
static int16_t input_state(unsigned port, unsigned device,
unsigned idx, unsigned id)
{
int16_t res = 0;
static const struct retro_keybind *libretro_input_binds[MAX_USERS] = {
g_settings.input.binds[0],
g_settings.input.binds[1],
g_settings.input.binds[2],
g_settings.input.binds[3],
g_settings.input.binds[4],
g_settings.input.binds[5],
g_settings.input.binds[6],
g_settings.input.binds[7],
g_settings.input.binds[8],
g_settings.input.binds[9],
g_settings.input.binds[10],
g_settings.input.binds[11],
g_settings.input.binds[12],
g_settings.input.binds[13],
g_settings.input.binds[14],
g_settings.input.binds[15],
};
device &= RETRO_DEVICE_MASK;
if (g_extern.bsv.movie && g_extern.bsv.movie_playback)
{
int16_t ret;
if (bsv_movie_get_input(g_extern.bsv.movie, &ret))
return ret;
g_extern.bsv.movie_end = true;
}
if (g_settings.input.remap_binds_enable)
{
if (id < RARCH_FIRST_CUSTOM_BIND)
id = g_settings.input.remap_ids[port][id];
}
if (!driver.block_libretro_input)
{
if (((id < RARCH_FIRST_META_KEY) || (device == RETRO_DEVICE_KEYBOARD)))
res = driver.input->input_state(driver.input_data, libretro_input_binds, port,
device, idx, id);
#ifdef HAVE_OVERLAY
if (port == 0)
{
switch (device)
{
case RETRO_DEVICE_JOYPAD:
if (driver.overlay_state.buttons & (UINT64_C(1) << id))
res |= 1;
break;
case RETRO_DEVICE_KEYBOARD:
if (id < RETROK_LAST)
{
if (OVERLAY_GET_KEY(&driver.overlay_state, id))
res |= 1;
}
break;
case RETRO_DEVICE_ANALOG:
{
unsigned base = 0;
if (idx == RETRO_DEVICE_INDEX_ANALOG_RIGHT)
base = 2;
if (id == RETRO_DEVICE_ID_ANALOG_Y)
base += 1;
if (driver.overlay_state.analog[base])
res = driver.overlay_state.analog[base];
}
break;
}
}
#endif
}
/* flushing_input will be cleared in rarch_main_iterate. */
if (driver.flushing_input)
res = 0;
/* Don't allow turbo for D-pad. */
if (device == RETRO_DEVICE_JOYPAD && (id < RETRO_DEVICE_ID_JOYPAD_UP ||
id > RETRO_DEVICE_ID_JOYPAD_RIGHT))
res = input_apply_turbo(port, id, res);
if (g_extern.bsv.movie && !g_extern.bsv.movie_playback)
bsv_movie_set_input(g_extern.bsv.movie, res);
return res;
}
#ifdef HAVE_OVERLAY
/*
* input_poll_overlay:
*
* Poll pressed buttons/keys on currently active overlay.
**/
static inline void input_poll_overlay(void)
{
input_overlay_state_t old_key_state;
unsigned i, j, device;
uint16_t key_mod = 0;
bool polled = false;
memcpy(old_key_state.keys, driver.overlay_state.keys,
sizeof(driver.overlay_state.keys));
memset(&driver.overlay_state, 0, sizeof(driver.overlay_state));
device = input_overlay_full_screen(driver.overlay) ?
RARCH_DEVICE_POINTER_SCREEN : RETRO_DEVICE_POINTER;
for (i = 0;
driver.input->input_state(driver.input_data, NULL, 0, device, i,
RETRO_DEVICE_ID_POINTER_PRESSED);
i++)
{
input_overlay_state_t polled_data;
int16_t x = driver.input->input_state(driver.input_data, NULL, 0,
device, i, RETRO_DEVICE_ID_POINTER_X);
int16_t y = driver.input->input_state(driver.input_data, NULL, 0,
device, i, RETRO_DEVICE_ID_POINTER_Y);
input_overlay_poll(driver.overlay, &polled_data, x, y);
driver.overlay_state.buttons |= polled_data.buttons;
for (j = 0; j < ARRAY_SIZE(driver.overlay_state.keys); j++)
driver.overlay_state.keys[j] |= polled_data.keys[j];
/* Fingers pressed later take prio and matched up
* with overlay poll priorities. */
for (j = 0; j < 4; j++)
if (polled_data.analog[j])
driver.overlay_state.analog[j] = polled_data.analog[j];
polled = true;
}
if (OVERLAY_GET_KEY(&driver.overlay_state, RETROK_LSHIFT) ||
OVERLAY_GET_KEY(&driver.overlay_state, RETROK_RSHIFT))
key_mod |= RETROKMOD_SHIFT;
if (OVERLAY_GET_KEY(&driver.overlay_state, RETROK_LCTRL) ||
OVERLAY_GET_KEY(&driver.overlay_state, RETROK_RCTRL))
key_mod |= RETROKMOD_CTRL;
if (OVERLAY_GET_KEY(&driver.overlay_state, RETROK_LALT) ||
OVERLAY_GET_KEY(&driver.overlay_state, RETROK_RALT))
key_mod |= RETROKMOD_ALT;
if (OVERLAY_GET_KEY(&driver.overlay_state, RETROK_LMETA) ||
OVERLAY_GET_KEY(&driver.overlay_state, RETROK_RMETA))
key_mod |= RETROKMOD_META;
/* CAPSLOCK SCROLLOCK NUMLOCK */
for (i = 0; i < ARRAY_SIZE(driver.overlay_state.keys); i++)
{
if (driver.overlay_state.keys[i] != old_key_state.keys[i])
{
uint32_t orig_bits = old_key_state.keys[i];
uint32_t new_bits = driver.overlay_state.keys[i];
for (j = 0; j < 32; j++)
if ((orig_bits & (1 << j)) != (new_bits & (1 << j)))
input_keyboard_event(new_bits & (1 << j), i * 32 + j, 0, key_mod);
}
}
/* Map "analog" buttons to analog axes like regular input drivers do. */
for (j = 0; j < 4; j++)
{
if (!driver.overlay_state.analog[j])
{
unsigned bind_plus = RARCH_ANALOG_LEFT_X_PLUS + 2 * j;
unsigned bind_minus = bind_plus + 1;
if (driver.overlay_state.buttons & (1ULL << bind_plus))
driver.overlay_state.analog[j] += 0x7fff;
if (driver.overlay_state.buttons & (1ULL << bind_minus))
driver.overlay_state.analog[j] -= 0x7fff;
}
}
/* Check for analog_dpad_mode.
* Map analogs to d-pad buttons when configured. */
switch (g_settings.input.analog_dpad_mode[0])
{
case ANALOG_DPAD_LSTICK:
case ANALOG_DPAD_RSTICK:
{
float analog_x, analog_y;
unsigned analog_base = 2;
if (g_settings.input.analog_dpad_mode[0] == ANALOG_DPAD_LSTICK)
analog_base = 0;
analog_x = (float)driver.overlay_state.analog[analog_base + 0] / 0x7fff;
analog_y = (float)driver.overlay_state.analog[analog_base + 1] / 0x7fff;
if (analog_x <= -g_settings.input.axis_threshold)
driver.overlay_state.buttons |= (1ULL << RETRO_DEVICE_ID_JOYPAD_LEFT);
if (analog_x >= g_settings.input.axis_threshold)
driver.overlay_state.buttons |= (1ULL << RETRO_DEVICE_ID_JOYPAD_RIGHT);
if (analog_y <= -g_settings.input.axis_threshold)
driver.overlay_state.buttons |= (1ULL << RETRO_DEVICE_ID_JOYPAD_UP);
if (analog_y >= g_settings.input.axis_threshold)
driver.overlay_state.buttons |= (1ULL << RETRO_DEVICE_ID_JOYPAD_DOWN);
break;
}
default:
break;
}
if (polled)
input_overlay_post_poll(driver.overlay);
else
input_overlay_poll_clear(driver.overlay);
}
#endif
/**
* input_poll:
*
* Input polling callback function.
**/
static void input_poll(void)
{
driver.input->poll(driver.input_data);
#ifdef HAVE_OVERLAY
if (driver.overlay)
input_poll_overlay();
#endif
#ifdef HAVE_COMMAND
if (driver.command)
rarch_cmd_poll(driver.command);
#endif
}
/**
* retro_set_default_callbacks:
* @data : pointer to retro_callbacks object
*
* Binds the libretro callbacks to default callback functions.
**/
void retro_set_default_callbacks(void *data)
{
struct retro_callbacks *cbs = (struct retro_callbacks*)data;
if (!cbs)
return;
cbs->frame_cb = video_frame;
cbs->sample_cb = audio_sample;
cbs->sample_batch_cb = audio_sample_batch;
cbs->state_cb = input_state;
cbs->poll_cb = input_poll;
}
/**
* retro_init_libretro_cbs:
* @data : pointer to retro_callbacks object
*
* Initializes libretro callbacks, and binds the libretro callbacks
* to default callback functions.
**/
void retro_init_libretro_cbs(void *data)
{
struct retro_callbacks *cbs = (struct retro_callbacks*)data;
if (!cbs)
return;
pretro_set_video_refresh(video_frame);
pretro_set_audio_sample(audio_sample);
pretro_set_audio_sample_batch(audio_sample_batch);
pretro_set_input_state(input_state);
pretro_set_input_poll(input_poll);
retro_set_default_callbacks(cbs);
#ifdef HAVE_NETPLAY
if (!driver.netplay_data)
return;
if (g_extern.netplay_is_spectate)
{
pretro_set_input_state(
(g_extern.netplay_is_client ?
input_state_spectate_client : input_state_spectate)
);
}
else
{
pretro_set_video_refresh(video_frame_net);
pretro_set_audio_sample(audio_sample_net);
pretro_set_audio_sample_batch(audio_sample_batch_net);
pretro_set_input_state(input_state_net);
}
#endif
}
/**
* retro_set_rewind_callbacks:
*
* Sets the audio sampling callbacks based on whether or not
* rewinding is currently activated.
**/
void retro_set_rewind_callbacks(void)
{
if (g_extern.frame_is_reverse)
{
pretro_set_audio_sample(audio_sample_rewind);
pretro_set_audio_sample_batch(audio_sample_batch_rewind);
}
else
{
pretro_set_audio_sample(audio_sample);
pretro_set_audio_sample_batch(audio_sample_batch);
}
}
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