Improved testaudiostreamdynamicresample

Tweaked color palette
This commit is contained in:
Brick 2023-08-31 21:13:45 +01:00 committed by Ryan C. Gordon
parent e55844274d
commit 5394a805f4
3 changed files with 322 additions and 63 deletions

View File

@ -38,7 +38,8 @@ extern "C" {
/* Function prototypes */
#define FONT_CHARACTER_SIZE 8
extern int FONT_CHARACTER_SIZE;
#define FONT_LINE_HEIGHT (FONT_CHARACTER_SIZE + 2)
/**

View File

@ -3126,11 +3126,12 @@ struct SDLTest_CharTextureCache
*/
static struct SDLTest_CharTextureCache *SDLTest_CharTextureCacheList;
int FONT_CHARACTER_SIZE = 8;
int SDLTest_DrawCharacter(SDL_Renderer *renderer, float x, float y, Uint32 c)
{
const Uint32 charWidth = FONT_CHARACTER_SIZE;
const Uint32 charHeight = FONT_CHARACTER_SIZE;
const Uint32 charSize = FONT_CHARACTER_SIZE;
SDL_FRect srect;
SDL_FRect drect;
int result;
@ -3149,8 +3150,8 @@ int SDLTest_DrawCharacter(SDL_Renderer *renderer, float x, float y, Uint32 c)
*/
srect.x = 0.0f;
srect.y = 0.0f;
srect.w = (float)charWidth;
srect.h = (float)charHeight;
srect.w = 8.0f;
srect.h = 8.0f;
/*
* Setup destination rectangle
@ -3190,7 +3191,7 @@ int SDLTest_DrawCharacter(SDL_Renderer *renderer, float x, float y, Uint32 c)
return -1;
}
charpos = SDLTest_FontData + ci * charSize;
charpos = SDLTest_FontData + ci * 8;
linepos = (Uint8 *)character->pixels;
pitch = character->pitch;
@ -3221,6 +3222,8 @@ int SDLTest_DrawCharacter(SDL_Renderer *renderer, float x, float y, Uint32 c)
if (cache->charTextureCache[ci] == NULL) {
return -1;
}
SDL_SetTextureScaleMode(cache->charTextureCache[ci], SDL_SCALEMODE_NEAREST);
}
/*

View File

@ -24,24 +24,197 @@
#include <stdlib.h>
#define SLIDER_WIDTH_PERC 500.f / 600.f
#define SLIDER_HEIGHT_PERC 100.f / 480.f
#define SLIDER_HEIGHT_PERC 70.f / 480.f
static int done;
static SDLTest_CommonState *state;
static int multiplier = 100;
static SDL_FRect slider_area;
static SDL_FRect slider_fill_area;
static SDL_AudioSpec spec;
static SDL_AudioStream *stream;
static Uint8 *audio_buf = NULL;
static Uint32 audio_len = 0;
static SDL_bool auto_loop = SDL_TRUE;
static SDL_bool auto_flush = SDL_TRUE;
static Uint64 last_get_callback = 0;
static int last_get_amount = 0;
typedef struct Slider
{
SDL_FRect area;
SDL_bool changed;
char fmtlabel[64];
float pos;
int type;
float min;
float mid;
float max;
float value;
} Slider;
#define NUM_SLIDERS 3
Slider sliders[NUM_SLIDERS];
static int active_slider = -1;
static void init_slider(int index, const char* fmtlabel, int type, float value, float min, float max)
{
Slider* slider = &sliders[index];
slider->area.x = state->window_w * (1.f - SLIDER_WIDTH_PERC) / 2;
slider->area.y = state->window_h * (0.2f + (index * SLIDER_HEIGHT_PERC * 1.4f));
slider->area.w = SLIDER_WIDTH_PERC * state->window_w;
slider->area.h = SLIDER_HEIGHT_PERC * state->window_h;
slider->changed = SDL_TRUE;
SDL_strlcpy(slider->fmtlabel, fmtlabel, SDL_arraysize(slider->fmtlabel));
slider->type = type;
slider->min = min;
slider->max = max;
slider->value = value;
if (slider->type == 0) {
slider->pos = (value - slider->min + 0.5f) / (slider->max - slider->min + 1.0f);
} else {
slider->pos = 0.5f;
slider->mid = value;
}
}
static float lerp(float v0, float v1, float t)
{
return (1 - t) * v0 + t * v1;
}
static void draw_text(SDL_Renderer* renderer, int x, int y, const char* text)
{
SDL_SetRenderDrawColor(renderer, 0xFD, 0xF6, 0xE3, 0xFF);
SDLTest_DrawString(renderer, (float) x, (float) y, text);
}
static void draw_textf(SDL_Renderer* renderer, int x, int y, const char* fmt, ...)
{
char text[256];
va_list ap;
va_start(ap, fmt);
SDL_vsnprintf(text, SDL_arraysize(text), fmt, ap);
va_end(ap);
draw_text(renderer, x, y, text);
}
static void queue_audio()
{
Uint8* new_data = NULL;
int new_len = 0;
int retval = 0;
SDL_AudioSpec new_spec;
new_spec.format = spec.format;
new_spec.channels = (int) sliders[2].value;
new_spec.freq = (int) sliders[1].value;
SDL_Log("Converting audio from %i to %i", spec.freq, new_spec.freq);
retval = retval ? retval : SDL_ConvertAudioSamples(&spec, audio_buf, audio_len, &new_spec, &new_data, &new_len);
retval = retval ? retval : SDL_SetAudioStreamFormat(stream, &new_spec, NULL);
retval = retval ? retval : SDL_PutAudioStreamData(stream, new_data, new_len);
if (auto_flush) {
retval = retval ? retval : SDL_FlushAudioStream(stream);
}
SDL_free(new_data);
if (retval) {
SDL_Log("Failed to queue audio: %s", SDL_GetError());
} else {
SDL_Log("Queued audio");
}
}
static void skip_audio(float amount)
{
float speed;
SDL_AudioSpec dst_spec, new_spec;
int num_frames;
int retval = 0;
void* buf = NULL;
SDL_LockAudioStream(stream);
speed = SDL_GetAudioStreamSpeed(stream);
SDL_GetAudioStreamFormat(stream, NULL, &dst_spec);
/* Gimme that crunchy audio */
new_spec.format = SDL_AUDIO_S8;
new_spec.channels = 1;
new_spec.freq = 4000;
SDL_SetAudioStreamSpeed(stream, 100.0f);
SDL_SetAudioStreamFormat(stream, NULL, &new_spec);
num_frames = (int)(new_spec.freq * ((speed * amount) / 100.0f));
buf = SDL_malloc(num_frames);
if (buf != NULL) {
retval = SDL_GetAudioStreamData(stream, buf, num_frames);
SDL_free(buf);
}
SDL_SetAudioStreamFormat(stream, NULL, &dst_spec);
SDL_SetAudioStreamSpeed(stream, speed);
SDL_UnlockAudioStream(stream);
if (retval >= 0) {
SDL_Log("Skipped %.2f seconds", amount);
} else {
SDL_Log("Failed to skip: %s", SDL_GetError());
}
}
static const char *AudioFmtToString(const SDL_AudioFormat fmt)
{
switch (fmt) {
#define FMTCASE(x) case SDL_AUDIO_##x: return #x
FMTCASE(U8);
FMTCASE(S8);
FMTCASE(S16LSB);
FMTCASE(S16MSB);
FMTCASE(S32LSB);
FMTCASE(S32MSB);
FMTCASE(F32LSB);
FMTCASE(F32MSB);
#undef FMTCASE
}
return "?";
}
static const char *AudioChansToStr(const int channels)
{
switch (channels) {
case 1: return "Mono";
case 2: return "Stereo";
case 3: return "2.1";
case 4: return "Quad";
case 5: return "4.1";
case 6: return "5.1";
case 7: return "6.1";
case 8: return "7.1";
default: break;
}
return "?";
}
static void loop(void)
{
int i;
int i, j;
SDL_Event e;
int newmultiplier = multiplier;
SDL_FPoint p;
SDL_AudioSpec src_spec, dst_spec;
int available_bytes = 0;
float available_seconds = 0;
while (SDL_PollEvent(&e)) {
SDLTest_CommonEvent(state, &e, &done);
@ -50,61 +223,145 @@ static void loop(void)
emscripten_cancel_main_loop();
}
#endif
if (e.type == SDL_EVENT_MOUSE_MOTION) {
if (e.motion.state & SDL_BUTTON_LMASK) {
const SDL_FPoint p = { e.motion.x, e.motion.y };
if (SDL_PointInRectFloat(&p, &slider_area)) {
const float w = SDL_roundf(p.x - slider_area.x);
slider_fill_area.w = w;
newmultiplier = ((int) ((w / slider_area.w) * 800.0f)) - 400;
if (e.type == SDL_EVENT_KEY_DOWN) {
SDL_Keycode sym = e.key.keysym.sym;
if (sym == SDLK_q) {
if (SDL_IsAudioDevicePaused(state->audio_id)) {
SDL_ResumeAudioDevice(state->audio_id);
} else {
SDL_PauseAudioDevice(state->audio_id);
}
} else if (sym == SDLK_w) {
auto_loop = auto_loop ? SDL_FALSE : SDL_TRUE;
} else if (sym == SDLK_e) {
auto_flush = auto_flush ? SDL_FALSE : SDL_TRUE;
} else if (sym == SDLK_a) {
SDL_ClearAudioStream(stream);
SDL_Log("Cleared audio stream");
} else if (sym == SDLK_s) {
queue_audio();
} else if (sym == SDLK_d) {
float amount = 1.0f;
amount *= (e.key.keysym.mod & SDL_KMOD_CTRL) ? 10.0f : 1.0f;
amount *= (e.key.keysym.mod & SDL_KMOD_SHIFT) ? 10.0f : 1.0f;
skip_audio(amount);
}
}
}
if (multiplier != newmultiplier) {
SDL_AudioSpec newspec;
char title[64];
int newfreq = spec.freq;
float scale = 1.0f;
multiplier = newmultiplier;
if (multiplier < 0) {
scale = 100.0f / (100.0f - multiplier);
} else if (multiplier > 0) {
scale = (multiplier + 100.0f) / 100.0f;
if (SDL_GetMouseState(&p.x, &p.y) & SDL_BUTTON_LMASK) {
if (active_slider == -1) {
for (i = 0; i < NUM_SLIDERS; ++i) {
if (SDL_PointInRectFloat(&p, &sliders[i].area)) {
active_slider = i;
break;
}
}
}
SDL_snprintf(title, sizeof (title), "Drag the slider: %.2fx speed", scale);
for (i = 0; i < state->num_windows; i++) {
SDL_SetWindowTitle(state->windows[i], title);
}
newfreq = (int) (spec.freq * scale);
/* SDL_Log("newfreq=%d multiplier=%d\n", newfreq, multiplier); */
SDL_memcpy(&newspec, &spec, sizeof (spec));
newspec.freq = newfreq;
SDL_SetAudioStreamFormat(stream, &newspec, NULL);
} else {
active_slider = -1;
}
/* keep it looping. */
if (SDL_GetAudioStreamAvailable(stream) < ((int) (audio_len / 2))) {
SDL_PutAudioStreamData(stream, audio_buf, audio_len);
if (active_slider != -1) {
Slider* slider = &sliders[active_slider];
float value = (p.x - slider->area.x) / slider->area.w;
value = SDL_clamp(value, 0.0f, 1.0f);
slider->pos = value;
if (slider->type == 0) {
value = slider->min + (value * (slider->max - slider->min + 1.0f));
value = SDL_clamp(value, slider->min, slider->max);
} else {
value = (value * 2.0f) - 1.0f;
value = (value >= 0)
? lerp(slider->mid, slider->max, value)
: lerp(slider->mid, slider->min, -value);
}
if (value != slider->value) {
slider->value = value;
slider->changed = SDL_TRUE;
}
}
if (sliders[0].changed) {
sliders[0].changed = SDL_FALSE;
SDL_SetAudioStreamSpeed(stream, sliders[0].value);
}
if (SDL_GetAudioStreamFormat(stream, &src_spec, &dst_spec) == 0) {
available_bytes = SDL_GetAudioStreamAvailable(stream);
available_seconds = (float)available_bytes / (float)(SDL_AUDIO_BITSIZE(dst_spec.format) / 8 * dst_spec.freq * dst_spec.channels);
/* keep it looping. */
if (auto_loop && (available_seconds < 10.0f)) {
queue_audio();
}
}
for (i = 0; i < state->num_windows; i++) {
SDL_SetRenderDrawColor(state->renderers[i], 0, 0, 255, 255);
SDL_RenderClear(state->renderers[i]);
SDL_SetRenderDrawColor(state->renderers[i], 0, 0, 0, 255);
SDL_RenderFillRect(state->renderers[i], &slider_area);
SDL_SetRenderDrawColor(state->renderers[i], 255, 0, 0, 255);
SDL_RenderFillRect(state->renderers[i], &slider_fill_area);
SDL_RenderPresent(state->renderers[i]);
int draw_y = 0;
SDL_Renderer* rend = state->renderers[i];
SDL_SetRenderDrawColor(rend, 0x00, 0x2B, 0x36, 0xFF);
SDL_RenderClear(rend);
for (j = 0; j < NUM_SLIDERS; ++j) {
Slider* slider = &sliders[j];
SDL_FRect area;
SDL_copyp(&area, &slider->area);
SDL_SetRenderDrawColor(rend, 0x07, 0x36, 0x42, 0xFF);
SDL_RenderFillRect(rend, &area);
area.w *= slider->pos;
SDL_SetRenderDrawColor(rend, 0x58, 0x6E, 0x75, 0xFF);
SDL_RenderFillRect(rend, &area);
draw_textf(rend, (int)slider->area.x, (int)slider->area.y, slider->fmtlabel, slider->value);
}
draw_textf(rend, 0, draw_y, "%7s, Loop: %3s, Flush: %3s",
SDL_IsAudioDevicePaused(state->audio_id) ? "Paused" : "Playing", auto_loop ? "On" : "Off", auto_flush ? "On" : "Off");
draw_y += FONT_LINE_HEIGHT;
draw_textf(rend, 0, draw_y, "Available: %4.2f (%i bytes)", available_seconds, available_bytes);
draw_y += FONT_LINE_HEIGHT;
SDL_LockAudioStream(stream);
draw_textf(rend, 0, draw_y, "Get Callback: %i bytes, %i ms ago", last_get_amount, (int)(SDL_GetTicks() - last_get_callback));
draw_y += FONT_LINE_HEIGHT;
SDL_UnlockAudioStream(stream);
draw_y = state->window_h - FONT_LINE_HEIGHT * 3;
draw_textf(rend, 0, draw_y, "Wav: %6s/%6s/%i",
AudioFmtToString(spec.format), AudioChansToStr(spec.channels), spec.freq);
draw_y += FONT_LINE_HEIGHT;
draw_textf(rend, 0, draw_y, "Src: %6s/%6s/%i",
AudioFmtToString(src_spec.format), AudioChansToStr(src_spec.channels), src_spec.freq);
draw_y += FONT_LINE_HEIGHT;
draw_textf(rend, 0, draw_y, "Dst: %6s/%6s/%i",
AudioFmtToString(dst_spec.format), AudioChansToStr(dst_spec.channels), dst_spec.freq);
draw_y += FONT_LINE_HEIGHT;
SDL_RenderPresent(rend);
}
}
static void SDLCALL our_get_callback(void *userdata, SDL_AudioStream *strm, int approx_amount)
{
last_get_callback = SDL_GetTicks();
last_get_amount = approx_amount;
}
int main(int argc, char *argv[])
{
char *filename = NULL;
@ -140,20 +397,14 @@ int main(int argc, char *argv[])
i += consumed;
}
slider_area.x = state->window_w * (1.f - SLIDER_WIDTH_PERC) / 2;
slider_area.y = state->window_h * (1.f - SLIDER_HEIGHT_PERC) / 2;
slider_area.w = SLIDER_WIDTH_PERC * state->window_w;
slider_area.h = SLIDER_HEIGHT_PERC * state->window_h;
slider_fill_area = slider_area;
slider_fill_area.w /= 2;
/* Load the SDL library */
if (!SDLTest_CommonInit(state)) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
return 1;
}
FONT_CHARACTER_SIZE = 16;
filename = GetResourceFilename(filename, "sample.wav");
rc = SDL_LoadWAV(filename, &spec, &audio_buf, &audio_len);
SDL_free(filename);
@ -164,12 +415,17 @@ int main(int argc, char *argv[])
return 1;
}
init_slider(0, "Speed: %3.2fx", 1, 1.0f, 0.2f, 5.0f);
init_slider(1, "Freq: %.0f", 1, (float)spec.freq, 4000.0f, 192000.0f);
init_slider(2, "Channels: %.0f", 0, (float)spec.channels, 1.0f, 8.0f);
for (i = 0; i < state->num_windows; i++) {
SDL_SetWindowTitle(state->windows[i], "Drag the slider: Normal speed");
SDL_SetWindowTitle(state->windows[i], "Resampler Test");
}
stream = SDL_CreateAudioStream(&spec, &spec);
SDL_PutAudioStreamData(stream, audio_buf, audio_len);
SDL_SetAudioStreamGetCallback(stream, our_get_callback, NULL);
SDL_BindAudioStream(state->audio_id, stream);
#ifdef __EMSCRIPTEN__
@ -183,7 +439,6 @@ int main(int argc, char *argv[])
SDL_DestroyAudioStream(stream);
SDL_free(audio_buf);
SDLTest_CommonQuit(state);
SDL_Quit();
return 0;
}