mirror of https://github.com/encounter/SDL.git
audio: Initial bits to enable audio capture support.
This commit is contained in:
parent
456901150c
commit
ee09975007
|
@ -120,6 +120,7 @@ test/testbounds
|
||||||
test/torturethread
|
test/torturethread
|
||||||
test/testdisplayinfo
|
test/testdisplayinfo
|
||||||
test/testqsort
|
test/testqsort
|
||||||
|
test/testaudiocapture
|
||||||
test/*.exe
|
test/*.exe
|
||||||
test/*.dSYM
|
test/*.dSYM
|
||||||
buildbot
|
buildbot
|
||||||
|
|
|
@ -317,7 +317,7 @@ add_audio_device(const char *name, void *handle, SDL_AudioDeviceItem **devices,
|
||||||
static SDL_INLINE int
|
static SDL_INLINE int
|
||||||
add_capture_device(const char *name, void *handle)
|
add_capture_device(const char *name, void *handle)
|
||||||
{
|
{
|
||||||
/* !!! FIXME: add this later. SDL_assert(current_audio.impl.HasCaptureSupport);*/
|
SDL_assert(current_audio.impl.HasCaptureSupport);
|
||||||
return add_audio_device(name, handle, ¤t_audio.inputDevices, ¤t_audio.inputDeviceCount);
|
return add_audio_device(name, handle, ¤t_audio.inputDevices, ¤t_audio.inputDeviceCount);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
@ -13,6 +13,7 @@ TARGETS = \
|
||||||
loopwavequeue$(EXE) \
|
loopwavequeue$(EXE) \
|
||||||
testatomic$(EXE) \
|
testatomic$(EXE) \
|
||||||
testaudioinfo$(EXE) \
|
testaudioinfo$(EXE) \
|
||||||
|
testaudiocapture$(EXE) \
|
||||||
testautomation$(EXE) \
|
testautomation$(EXE) \
|
||||||
testbounds$(EXE) \
|
testbounds$(EXE) \
|
||||||
testcustomcursor$(EXE) \
|
testcustomcursor$(EXE) \
|
||||||
|
@ -113,6 +114,9 @@ testmultiaudio$(EXE): $(srcdir)/testmultiaudio.c
|
||||||
testaudiohotplug$(EXE): $(srcdir)/testaudiohotplug.c
|
testaudiohotplug$(EXE): $(srcdir)/testaudiohotplug.c
|
||||||
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
|
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
|
||||||
|
|
||||||
|
testaudiocapture$(EXE): $(srcdir)/testaudiocapture.c
|
||||||
|
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
|
||||||
|
|
||||||
testatomic$(EXE): $(srcdir)/testatomic.c
|
testatomic$(EXE): $(srcdir)/testatomic.c
|
||||||
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
|
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
|
||||||
|
|
||||||
|
|
|
@ -0,0 +1,161 @@
|
||||||
|
/*
|
||||||
|
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
|
||||||
|
|
||||||
|
This software is provided 'as-is', without any express or implied
|
||||||
|
warranty. In no event will the authors be held liable for any damages
|
||||||
|
arising from the use of this software.
|
||||||
|
|
||||||
|
Permission is granted to anyone to use this software for any purpose,
|
||||||
|
including commercial applications, and to alter it and redistribute it
|
||||||
|
freely.
|
||||||
|
*/
|
||||||
|
#include "SDL.h"
|
||||||
|
|
||||||
|
#ifdef __EMSCRIPTEN__
|
||||||
|
#include <emscripten/emscripten.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#define CAPTURE_SECONDS 5
|
||||||
|
|
||||||
|
static SDL_AudioSpec spec;
|
||||||
|
static Uint8 *sound = NULL; /* Pointer to wave data */
|
||||||
|
static Uint32 soundlen = 0; /* Length of wave data */
|
||||||
|
static Uint32 processed = 0;
|
||||||
|
static SDL_AudioDeviceID devid = 0;
|
||||||
|
|
||||||
|
void SDLCALL
|
||||||
|
capture_callback(void *arg, Uint8 * stream, int len)
|
||||||
|
{
|
||||||
|
const int avail = (int) (soundlen - processed);
|
||||||
|
if (len > avail) {
|
||||||
|
len = avail;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*SDL_Log("CAPTURE CALLBACK: %d more bytes\n", len);*/
|
||||||
|
SDL_memcpy(sound + processed, stream, len);
|
||||||
|
processed += len;
|
||||||
|
}
|
||||||
|
|
||||||
|
void SDLCALL
|
||||||
|
play_callback(void *arg, Uint8 * stream, int len)
|
||||||
|
{
|
||||||
|
const Uint8 *waveptr = sound + processed;
|
||||||
|
const int avail = soundlen - processed;
|
||||||
|
int cpy = len;
|
||||||
|
if (cpy > avail) {
|
||||||
|
cpy = avail;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*SDL_Log("PLAY CALLBACK: %d more bytes\n", cpy);*/
|
||||||
|
SDL_memcpy(stream, waveptr, cpy);
|
||||||
|
processed += cpy;
|
||||||
|
|
||||||
|
len -= cpy;
|
||||||
|
if (len > 0) {
|
||||||
|
SDL_memset(stream + cpy, spec.silence, len);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
static void
|
||||||
|
loop()
|
||||||
|
{
|
||||||
|
SDL_Event e;
|
||||||
|
SDL_bool please_quit = SDL_FALSE;
|
||||||
|
|
||||||
|
while (SDL_PollEvent(&e)) {
|
||||||
|
if (e.type == SDL_QUIT) {
|
||||||
|
please_quit = SDL_TRUE;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((!please_quit) && (processed >= soundlen)) {
|
||||||
|
processed = 0;
|
||||||
|
if (spec.callback == capture_callback) {
|
||||||
|
SDL_Log("Done recording, playing back...\n");
|
||||||
|
SDL_PauseAudioDevice(devid, 1);
|
||||||
|
SDL_CloseAudioDevice(devid);
|
||||||
|
|
||||||
|
spec.callback = play_callback;
|
||||||
|
devid = SDL_OpenAudioDevice(NULL, 0, &spec, &spec, 0);
|
||||||
|
if (!devid) {
|
||||||
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open an audio device for playback!\n");
|
||||||
|
SDL_Quit();
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_PauseAudioDevice(devid, 0);
|
||||||
|
} else {
|
||||||
|
SDL_Log("Done playing back.\n");
|
||||||
|
please_quit = SDL_TRUE;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if (please_quit) {
|
||||||
|
/* stop playing back, quit. */
|
||||||
|
SDL_Log("Shutting down.\n");
|
||||||
|
SDL_PauseAudioDevice(devid, 1);
|
||||||
|
SDL_CloseAudioDevice(devid);
|
||||||
|
SDL_free(sound);
|
||||||
|
sound = NULL;
|
||||||
|
SDL_Quit();
|
||||||
|
#ifdef __EMSCRIPTEN__
|
||||||
|
emscripten_cancel_main_loop();
|
||||||
|
#endif
|
||||||
|
exit(0);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
int
|
||||||
|
main(int argc, char **argv)
|
||||||
|
{
|
||||||
|
/* Enable standard application logging */
|
||||||
|
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
|
||||||
|
|
||||||
|
/* Load the SDL library */
|
||||||
|
if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0) {
|
||||||
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
|
||||||
|
return (1);
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Android apparently needs a window...? */
|
||||||
|
#ifdef __ANDROID__
|
||||||
|
SDL_CreateWindow("testaudiocapture", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 320, 240, 0);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
SDL_Log("Using audio driver: %s\n", SDL_GetCurrentAudioDriver());
|
||||||
|
|
||||||
|
SDL_zero(spec);
|
||||||
|
spec.freq = 44100;
|
||||||
|
spec.format = AUDIO_F32SYS;
|
||||||
|
spec.channels = 1;
|
||||||
|
spec.samples = 1024;
|
||||||
|
spec.callback = capture_callback;
|
||||||
|
|
||||||
|
soundlen = spec.freq * (SDL_AUDIO_BITSIZE(spec.format) / 8) * spec.channels * CAPTURE_SECONDS;
|
||||||
|
sound = (Uint8 *) SDL_malloc(soundlen);
|
||||||
|
if (!sound) {
|
||||||
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory\n");
|
||||||
|
SDL_Quit();
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
devid = SDL_OpenAudioDevice(NULL, 1, &spec, &spec, 0);
|
||||||
|
if (!devid) {
|
||||||
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't open an audio device for capture: %s!\n", SDL_GetError());
|
||||||
|
SDL_free(sound);
|
||||||
|
SDL_Quit();
|
||||||
|
exit(1);
|
||||||
|
}
|
||||||
|
|
||||||
|
SDL_Log("Recording for %d seconds...\n", CAPTURE_SECONDS);
|
||||||
|
SDL_PauseAudioDevice(devid, 0);
|
||||||
|
|
||||||
|
#ifdef __EMSCRIPTEN__
|
||||||
|
emscripten_set_main_loop(loop, 0, 1);
|
||||||
|
#else
|
||||||
|
while (1) { loop(); SDL_Delay(16); }
|
||||||
|
#endif
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
Loading…
Reference in New Issue