Remove example test code
This commit is contained in:
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1d30dba681
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@ -1 +0,0 @@
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Some code here is from ChatGPT
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@ -1,171 +0,0 @@
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_audio.h>
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#include <stdio.h>
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/*
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* Audio INFO: audio related declarations and callback here.
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*/
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const int MAX_RECORDING_SECONDS = 2;
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const int RECORDING_BUFFER_SECONDS = MAX_RECORDING_SECONDS + 1;
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int num_devices = 0;
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int num_recdevices = 0;
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int num_playdevices = 0;
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//Recording data buffer
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Uint8* gRecordingBuffer = NULL;
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//Size of data buffer
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Uint32 gBufferByteSize = 0;
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//Position in data buffer
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Uint32 gBufferBytePosition = 0;
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void audioRecordingCallback(void* userdata, Uint8* stream, int len )
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{
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memcpy(&gRecordingBuffer[ gBufferBytePosition ], stream, len);
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gBufferBytePosition += len;
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printf("Recording Callback: %u\n", *stream);
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}
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void audioPlaybackCallback(void* userdata, Uint8* stream, int len )
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{
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memcpy(stream, &gRecordingBuffer[ gBufferBytePosition ], len);
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gBufferBytePosition += len;
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printf("Playback Callback: %u\n", *stream);
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}
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int main(int argc, char* argv[])
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{
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if (SDL_Init(SDL_INIT_AUDIO) < 0) {
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printf("SDL init failed: %s\n", SDL_GetError());
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return 1;
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}
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printf("SDL init success: %s\n", SDL_GetError());
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while (1) {
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int go = 0;
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while (!go) {
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printf("q to quit, Enter to continue\n");
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char ch = getchar();
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switch (ch) {
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case 'q':
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goto end;
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break;
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case '\n':
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go = 1;
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break;
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}
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}
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SDL_AudioDeviceID recordingDeviceId = 0;
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SDL_AudioDeviceID playbackDeviceId = 0;
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SDL_AudioSpec gReceivedRecordingSpec;
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SDL_AudioSpec gReceivedPlaybackSpec;
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SDL_AudioSpec desiredRecordingSpec;
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SDL_zero(desiredRecordingSpec);
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desiredRecordingSpec.freq = 44100;
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desiredRecordingSpec.format = AUDIO_S16;
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desiredRecordingSpec.channels = 2;
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desiredRecordingSpec.samples = 4096;
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desiredRecordingSpec.callback = audioRecordingCallback;
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SDL_AudioSpec desiredPlaybackSpec;
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SDL_zero(desiredPlaybackSpec);
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desiredPlaybackSpec.freq = 44100;
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desiredPlaybackSpec.format = AUDIO_S16; // AUDIO_F32;
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desiredPlaybackSpec.channels = 2;
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desiredPlaybackSpec.samples = 4096;
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desiredPlaybackSpec.callback = audioPlaybackCallback;
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//Maximum position in data buffer for recording
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Uint32 gBufferByteMaxPosition = 0;
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printf("Audio Driver: %s\n", SDL_GetCurrentAudioDriver());
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num_recdevices = SDL_GetNumAudioDevices(1);
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if(num_recdevices < 1) {
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printf( "Unable to get audio capture device! SDL Error: %s\n", SDL_GetError() );
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return 0;
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}
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printf("Num audio recording devices: %i\n", num_recdevices);
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for(int i = 0; i < num_recdevices; ++i) {
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const char* deviceName = SDL_GetAudioDeviceName(i, 1);
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printf("REC: %d - %s\n", i, deviceName);
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}
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num_playdevices = SDL_GetNumAudioDevices(0);
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if(num_playdevices < 1) {
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printf( "Unable to get audio playback device! SDL Error: %s\n", SDL_GetError() );
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return 0;
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}
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printf("Num audio playback devices: %i\n", num_playdevices);
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for(int i = 0; i < num_recdevices; ++i) {
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const char* deviceName = SDL_GetAudioDeviceName(i, 0);
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printf("PBK: %d - %s\n", i, deviceName);
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}
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const char* device_name = SDL_GetAudioDeviceName(2, 1);
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recordingDeviceId = SDL_OpenAudioDevice(device_name, SDL_TRUE, &desiredRecordingSpec, &gReceivedRecordingSpec, SDL_AUDIO_ALLOW_FORMAT_CHANGE);
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if(recordingDeviceId == 0) {
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printf("Failed to open recording device! SDL Error: %s", SDL_GetError() );
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return 1;
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}
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int bytesPerSample = gReceivedRecordingSpec.channels * (SDL_AUDIO_BITSIZE(gReceivedRecordingSpec.format) / 8);
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int bytesPerSecond = gReceivedRecordingSpec.freq * bytesPerSample;
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gBufferByteSize = RECORDING_BUFFER_SECONDS * bytesPerSecond;
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gBufferByteMaxPosition = MAX_RECORDING_SECONDS * bytesPerSecond;
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printf("bytesPerSample %d, bytesPerSecond %d\n", bytesPerSample,bytesPerSecond);
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printf("gBufferByteSize %d, gBufferByteMaxPosition %d\n", gBufferByteSize,gBufferByteMaxPosition);
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playbackDeviceId = SDL_OpenAudioDevice( NULL, 0, &desiredPlaybackSpec, &gReceivedPlaybackSpec, SDL_AUDIO_ALLOW_FORMAT_CHANGE );
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if(playbackDeviceId == 0) {
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printf("Failed to open playback device! SDL Error: %s", SDL_GetError());
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return 1;
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}
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gRecordingBuffer = malloc(gBufferByteSize);
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memset(gRecordingBuffer, 0, gBufferByteSize);
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gBufferBytePosition = 0;
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SDL_Delay(100);
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SDL_PauseAudioDevice( recordingDeviceId, SDL_FALSE );
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while(1) {
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SDL_LockAudioDevice( recordingDeviceId );
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if(gBufferBytePosition > gBufferByteMaxPosition) {
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printf("end\n");
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SDL_UnlockAudioDevice( recordingDeviceId );
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SDL_PauseAudioDevice( recordingDeviceId, SDL_TRUE );
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break;
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//} else {
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// printf("bufferPos %d\n",gBufferBytePosition);
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}
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SDL_UnlockAudioDevice( recordingDeviceId );
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}
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printf("playback\n");
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gBufferBytePosition = 0;
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SDL_PauseAudioDevice(playbackDeviceId, 0);
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while(1) {
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SDL_LockAudioDevice(playbackDeviceId);
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if(gBufferBytePosition > gBufferByteMaxPosition) {
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printf("end\n");
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SDL_UnlockAudioDevice(playbackDeviceId);
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SDL_PauseAudioDevice(playbackDeviceId, SDL_TRUE);
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break;
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}
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SDL_UnlockAudioDevice(playbackDeviceId);
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}
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printf("Cleanup\n");
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free(gRecordingBuffer);
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SDL_CloseAudioDevice(recordingDeviceId);
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SDL_CloseAudioDevice(playbackDeviceId);
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}
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end:
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return 0;
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}
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@ -1,517 +0,0 @@
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#include <SDL2/SDL.h>
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#include <SDL2/SDL_audio.h>
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#include <SDL2/SDL_image.h>
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#include <SDL2/SDL_ttf.h>
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#include <stdio.h>
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#include "log.h"
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const int SCREEN_WIDTH = 640;
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const int SCREEN_HEIGHT = 480;
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const int MAX_RECORDING_DEVICES = 10;
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const int MAX_RECORDING_SECONDS = 1;
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const int RECORDING_BUFFER_SECONDS = MAX_RECORDING_SECONDS + 1;
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/*
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* Application
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*/
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int init();
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void destroy();
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int select_device(SDL_KeyboardEvent* key_event, int max_index);
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typedef enum {
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SELECTING_DEVICE,
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RECORDING,
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RECORDED,
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PLAYBACK,
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} application_state;
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typedef struct {
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application_state application_state;
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int device_index;
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int recording_device_id;
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int playback_device_id;
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} state;
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void application_state_to_string(application_state state, char* string);
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/*
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* Visual
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*/
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SDL_Window* window = NULL;
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SDL_Renderer* renderer = NULL;
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TTF_Font* global_font = NULL;
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typedef struct {
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SDL_Texture* texture;
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int width;
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int height;
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} text_texture;
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int text_texture_init(text_texture* text_texture);
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int text_texture_load(text_texture* text_texture, char* string);
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int text_texture_render(text_texture* text_texture, int x, int y);
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int text_texture_free(text_texture* text_texture);
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/*
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* Audio
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*/
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int num_devices = 0;
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SDL_AudioSpec* recording_spec;
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SDL_AudioSpec* playback_spec;
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SDL_AudioSpec* received_recording_spec;
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SDL_AudioSpec* received_playback_spec;
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Uint8* recording_buffer = NULL;
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unsigned int recording_buffer_size = 0;
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unsigned int recording_buffer_position = 0;
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unsigned int recording_buffer_position_max = 0;
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SDL_AudioDeviceID audio_recording_init(int index, void* userdata);
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SDL_AudioDeviceID audio_playback_init(void* userdata);
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void audio_buffer_destroy();
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void audio_recording_callback( void* userdata, Uint8* stream, int len );
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void audio_playback_callback( void* userdata, Uint8* stream, int len );
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void handle_input(SDL_Event* event, state* state);
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void handle_task(state* state);
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int main(int argc, char* argv[])
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{
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if (!init()) return 1;
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num_devices = SDL_GetNumAudioDevices(1);
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printf("Num audio devices: %i\n", num_devices);
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char char_buffer[64];
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char default_fmt[] = "Device selected: %i";
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state state = {
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SELECTING_DEVICE,
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-1,
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0,
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0,
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};
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text_texture display_text_texture;
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text_texture_init(&display_text_texture);
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sprintf(char_buffer, default_fmt, state.device_index);
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text_texture_load(&display_text_texture, char_buffer);
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text_texture device_textures[num_devices];
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for (int i = 0; i < num_devices; i++) {
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text_texture_init(&device_textures[i]);
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sprintf(char_buffer, "%i: %s", i, SDL_GetAudioDeviceName(i, 1));
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text_texture_load(&device_textures[i], char_buffer);
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}
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text_texture state_text_texture;
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text_texture_init(&state_text_texture);
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application_state_to_string(state.application_state, char_buffer);
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text_texture_load(&state_text_texture, char_buffer);
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SDL_Event event;
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int running = 1;
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while (running) {
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while (SDL_PollEvent(&event)) {
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SDL_Keycode keysym = event.key.keysym.sym;
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switch (event.type) {
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case SDL_QUIT:
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running = 0;
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break;
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case SDL_KEYDOWN:
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handle_input(&event, &state);
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sprintf(char_buffer, default_fmt, state.device_index);
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text_texture_load(&display_text_texture, char_buffer);
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application_state_to_string(state.application_state, char_buffer);
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text_texture_load(&state_text_texture, char_buffer);
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break;
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}
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}
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handle_task(&state);
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// Clear the screen
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SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
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SDL_RenderClear(renderer);
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// Render
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text_texture_render(&display_text_texture, 0, 0);
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if (state.application_state == SELECTING_DEVICE) {
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int text_y_offset_step = display_text_texture.height * 2;
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int text_y_offset = text_y_offset_step;
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for (int i = 0; i < num_devices; i++) {
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text_texture_render(&device_textures[i], 0, text_y_offset);
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text_y_offset += text_y_offset_step;
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}
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}
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text_texture_render(&state_text_texture, 0, SCREEN_HEIGHT - state_text_texture.height);
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// Update the screen
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SDL_RenderPresent(renderer);
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}
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text_texture_free(&display_text_texture);
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destroy();
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return 0;
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}
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void handle_input(SDL_Event* event, state* state)
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{
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SDL_Keycode keysym = event->key.keysym.sym;
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switch (state->application_state) {
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case SELECTING_DEVICE:
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switch (keysym) {
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case SDLK_y:
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case SDLK_RETURN:
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if (state->device_index == -1 || !state->recording_device_id) break;
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recording_buffer_position = 0;
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SDL_PauseAudioDevice(state->recording_device_id, 0);
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/*SDL_UnlockAudioDevice(state->recording_device_id);*/
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state->application_state = RECORDING;
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break;
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case SDLK_ESCAPE:
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state->device_index = -1;
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SDL_CloseAudioDevice(state->recording_device_id);
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break;
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}
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int device_index_new = select_device(&event->key, num_devices);
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if (device_index_new == -1) break;
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if (state->device_index != -1 && device_index_new == -1) break;
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state->device_index = device_index_new;
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SDL_CloseAudioDevice(state->recording_device_id);
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state->recording_device_id = audio_recording_init(state->device_index, NULL);
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break;
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case RECORDING:
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switch (keysym) {
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case SDLK_y:
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SDL_PauseAudioDevice(state->recording_device_id, 0);
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break;
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case SDLK_q:
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case SDLK_ESCAPE:
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SDL_PauseAudioDevice(state->recording_device_id, 1);
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audio_buffer_destroy();
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state->application_state = SELECTING_DEVICE;
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break;
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}
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break;
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case RECORDED:
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switch (keysym) {
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case SDLK_y:
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case SDLK_RETURN:
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if (!state->playback_device_id) {
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state->playback_device_id = audio_playback_init(NULL);
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break;
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}
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recording_buffer_position = 0;
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SDL_PauseAudioDevice(state->playback_device_id, 0);
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/*SDL_UnlockAudioDevice(state->playback_device_id);*/
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state->application_state = PLAYBACK;
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break;
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case SDLK_q:
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case SDLK_ESCAPE:
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audio_buffer_destroy();
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state->application_state = SELECTING_DEVICE;
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break;
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}
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break;
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case PLAYBACK:
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switch (keysym) {
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case SDLK_q:
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case SDLK_ESCAPE:
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state->application_state = RECORDED;
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break;
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}
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break;
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}
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}
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void handle_task(state* state)
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{
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switch (state->application_state) {
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case SELECTING_DEVICE:
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break;
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case RECORDING:
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SDL_LockAudioDevice(state->recording_device_id);
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/*printf("buf pos: %u\n", recording_buffer_position);*/
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if (recording_buffer_position >= recording_buffer_position_max) {
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SDL_UnlockAudioDevice(state->recording_device_id);
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SDL_PauseAudioDevice(state->recording_device_id, 1);
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SDL_CloseAudioDevice(state->recording_device_id);
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state->application_state = RECORDED;
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break;
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}
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SDL_UnlockAudioDevice(state->recording_device_id);
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break;
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case RECORDED:
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break;
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case PLAYBACK:
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SDL_LockAudioDevice(state->playback_device_id);
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if (recording_buffer_position >= recording_buffer_position_max) {
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SDL_UnlockAudioDevice(state->playback_device_id);
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SDL_PauseAudioDevice(state->playback_device_id, 1);
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SDL_CloseAudioDevice(state->playback_device_id);
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state->application_state = RECORDED;
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break;
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}
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SDL_UnlockAudioDevice(state->playback_device_id);
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break;
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}
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}
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int init()
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{
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if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0) {
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printf("SDL could not initialize! SDL Error: %s\n", SDL_GetError());
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return 0;
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}
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if (TTF_Init() == -1) {
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printf("TTF could not initialize! TTF Error: %s\n", TTF_GetError());
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return 0;
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}
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window = SDL_CreateWindow("SDL record", SDL_WINDOWPOS_UNDEFINED,
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SDL_WINDOWPOS_UNDEFINED, SCREEN_WIDTH,
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SCREEN_HEIGHT, SDL_WINDOW_SHOWN);
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if (!window) {
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printf("Window could not be created! SDL Error: %s\n", SDL_GetError());
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return 0;
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}
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renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
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if (!renderer) {
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printf("Renderer could not be created! SDL_Error: %s\n", SDL_GetError());
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return 0;
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}
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global_font = TTF_OpenFont("FiraCode-Regular.ttf", 24);
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if (!global_font) {
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printf("Failed to load font! TTF_Error: %s\n", TTF_GetError());
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return 0;
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}
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recording_spec = malloc(sizeof(SDL_AudioSpec));
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received_recording_spec = malloc(sizeof(SDL_AudioSpec));
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playback_spec = malloc(sizeof(SDL_AudioSpec));
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received_playback_spec = malloc(sizeof(SDL_AudioSpec));
|
||||
return 1;
|
||||
}
|
||||
|
||||
void destroy()
|
||||
{
|
||||
free(recording_spec);
|
||||
free(received_recording_spec);
|
||||
free(playback_spec);
|
||||
free(received_playback_spec);
|
||||
free(recording_buffer);
|
||||
|
||||
TTF_CloseFont(global_font);
|
||||
SDL_DestroyRenderer(renderer);
|
||||
SDL_DestroyWindow(window);
|
||||
TTF_Quit();
|
||||
SDL_Quit();
|
||||
}
|
||||
|
||||
int select_device(SDL_KeyboardEvent* key_event, int max_index)
|
||||
{
|
||||
SDL_Keycode keycode = key_event->keysym.sym;
|
||||
SDL_Keycode mod = key_event->keysym.mod;
|
||||
|
||||
int keycode_is_num = (keycode >= SDLK_0 && keycode <= SDLK_9);
|
||||
int no_mod = (mod == 0);
|
||||
if (!keycode_is_num || !no_mod) {
|
||||
printf("Not number: %c <%u>\n", keycode, keycode);
|
||||
return -1;
|
||||
} else {
|
||||
printf("Is number: %c <%u>\n", keycode, keycode);
|
||||
}
|
||||
|
||||
int index = keycode - SDLK_0;
|
||||
if (index >= max_index) return -1;
|
||||
|
||||
return index;
|
||||
}
|
||||
|
||||
void application_state_to_string(application_state state, char* string)
|
||||
{
|
||||
switch (state) {
|
||||
case SELECTING_DEVICE:
|
||||
sprintf(string, "Selecting Device [0-9] -> [y/RET], ");
|
||||
break;
|
||||
case RECORDING:
|
||||
sprintf(string, "Recording");
|
||||
break;
|
||||
case RECORDED:
|
||||
sprintf(string, "Recorded");
|
||||
break;
|
||||
case PLAYBACK:
|
||||
sprintf(string, "Playing");
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
int text_texture_init(text_texture* text_texture)
|
||||
{
|
||||
text_texture->texture = NULL;
|
||||
text_texture->width = 0;
|
||||
text_texture->height = 0;
|
||||
return 1;
|
||||
}
|
||||
|
||||
int text_texture_load(text_texture* text_texture, char* string)
|
||||
{
|
||||
if (text_texture->texture) {
|
||||
SDL_DestroyTexture(text_texture->texture);
|
||||
text_texture->texture = NULL;
|
||||
}
|
||||
|
||||
SDL_Color text_color = { 255, 255, 255 };
|
||||
SDL_Surface* text_surface = TTF_RenderText_Solid(global_font, string, text_color);
|
||||
if (!text_surface) {
|
||||
printf("Unable to render text surface! TTF_Error: %s\n", TTF_GetError());
|
||||
return 0;
|
||||
}
|
||||
|
||||
SDL_Texture* texture = SDL_CreateTextureFromSurface(renderer, text_surface);
|
||||
if (!texture) {
|
||||
printf("Unable to create texture from rendered text! SDL_Error: %s\n", SDL_GetError());
|
||||
return 0;
|
||||
}
|
||||
|
||||
text_texture->texture = SDL_CreateTextureFromSurface(renderer, text_surface);
|
||||
text_texture->width = text_surface->w;
|
||||
text_texture->height = text_surface->h;
|
||||
|
||||
SDL_FreeSurface(text_surface);
|
||||
return 1;
|
||||
}
|
||||
|
||||
int text_texture_render(text_texture* text_texture, int x, int y)
|
||||
{
|
||||
if (!text_texture) {
|
||||
printf("text_texture uninitialized");
|
||||
return 0;
|
||||
}
|
||||
if (!text_texture->texture) {
|
||||
printf("text_texture->texture uninitialized");
|
||||
return 0;
|
||||
}
|
||||
|
||||
int quad_width = text_texture->width;
|
||||
int quad_height = text_texture->height;
|
||||
SDL_Rect render_quad = { x, y, quad_width, quad_height };
|
||||
SDL_RenderCopy(renderer, text_texture->texture, NULL, &render_quad);
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
int text_texture_free(text_texture* text_texture)
|
||||
{
|
||||
if (!text_texture->texture) {
|
||||
return 0;
|
||||
}
|
||||
SDL_DestroyTexture(text_texture->texture);
|
||||
return 1;
|
||||
}
|
||||
|
||||
SDL_AudioDeviceID audio_recording_init(int index, void* userdata)
|
||||
{
|
||||
memset(recording_spec, 0, sizeof(SDL_AudioSpec));
|
||||
memset(received_recording_spec, 0, sizeof(SDL_AudioSpec));
|
||||
recording_spec->freq = 44100;
|
||||
recording_spec->format = AUDIO_F32;
|
||||
recording_spec->channels = 2;
|
||||
recording_spec->samples = 4096;
|
||||
recording_spec->callback = audio_recording_callback;
|
||||
recording_spec->userdata = userdata;
|
||||
|
||||
SDL_AudioDeviceID device_id = SDL_OpenAudioDevice(SDL_GetAudioDeviceName(index, 1), 1, recording_spec, received_recording_spec, SDL_AUDIO_ALLOW_FORMAT_CHANGE);
|
||||
printf("Recording Device: %s\n", SDL_GetAudioDeviceName(index, 1));
|
||||
if (!device_id) {
|
||||
printf("Failed to open recording device! SDL Error: %s", SDL_GetError());
|
||||
return 0;
|
||||
}
|
||||
|
||||
unsigned int bytes_per_sample = received_recording_spec->channels * (SDL_AUDIO_BITSIZE(received_recording_spec->format)/8);
|
||||
unsigned int bytes_per_second = received_recording_spec->freq * bytes_per_sample;
|
||||
recording_buffer_size = RECORDING_BUFFER_SECONDS * bytes_per_second;
|
||||
recording_buffer_position_max = MAX_RECORDING_SECONDS * bytes_per_second;
|
||||
|
||||
recording_buffer = malloc(recording_buffer_size);
|
||||
memset(recording_buffer, 0, recording_buffer_size);
|
||||
|
||||
return device_id;
|
||||
}
|
||||
|
||||
SDL_AudioDeviceID audio_playback_init(void* userdata)
|
||||
{
|
||||
if (!recording_buffer) {
|
||||
printf("Audio buffer not initialized");
|
||||
return 0;
|
||||
}
|
||||
|
||||
memset(playback_spec, 0, sizeof(SDL_AudioSpec));
|
||||
memset(received_playback_spec, 0, sizeof(SDL_AudioSpec));
|
||||
playback_spec->freq = 44100;
|
||||
playback_spec->format = AUDIO_F32;
|
||||
playback_spec->channels = 2;
|
||||
playback_spec->samples = 4096;
|
||||
playback_spec->callback = audio_playback_callback;
|
||||
playback_spec->callback = userdata;
|
||||
|
||||
SDL_AudioDeviceID device_id = SDL_OpenAudioDevice(NULL, 0, playback_spec, received_playback_spec, SDL_AUDIO_ALLOW_FORMAT_CHANGE);
|
||||
if (!device_id) {
|
||||
printf("Failed to open playback device! SDL Error: %s", SDL_GetError());
|
||||
return 0;
|
||||
}
|
||||
|
||||
return device_id;
|
||||
}
|
||||
|
||||
int audio_device_stop(int device_id)
|
||||
{
|
||||
SDL_PauseAudioDevice(device_id, 1);
|
||||
SDL_CloseAudioDevice(device_id);
|
||||
return 1;
|
||||
}
|
||||
|
||||
void audio_buffer_destroy()
|
||||
{
|
||||
free(recording_buffer);
|
||||
recording_buffer = NULL;
|
||||
recording_buffer_size = 0;
|
||||
recording_buffer_position = 0;
|
||||
}
|
||||
|
||||
void audio_recording_callback(void* userdata, Uint8* stream, int len)
|
||||
{
|
||||
memcpy(&recording_buffer[recording_buffer_position], stream, len);
|
||||
recording_buffer_position += len;
|
||||
char string[64];
|
||||
sprintf(string, "Record pos: %u %u", recording_buffer_position, len);
|
||||
log_message(LOG_INFO, string);
|
||||
}
|
||||
|
||||
void audio_playback_callback(void* userdata, Uint8* stream, int len)
|
||||
{
|
||||
memcpy(stream, &recording_buffer[recording_buffer_position], len);
|
||||
recording_buffer_position += len;
|
||||
char string[64];
|
||||
sprintf(string, "Playback pos: %u %u", recording_buffer_position, len);
|
||||
log_message(LOG_INFO, string);
|
||||
}
|
||||
@ -1,64 +0,0 @@
|
||||
#include <SDL2/SDL.h>
|
||||
#include <SDL2/SDL_image.h>
|
||||
#include <SDL2/SDL_ttf.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include "log.h"
|
||||
|
||||
SDL_AudioSpec* desiredSpec;
|
||||
void audio_callback(void* userdata, Uint8* stream, int len)
|
||||
{
|
||||
// Fill the audio buffer with data
|
||||
char string[64];
|
||||
sprintf(string, "stream: %u len: %u\n", stream, len);
|
||||
printf(string, "stream: %u len: %u\n", stream, len);
|
||||
log_message(LOG_INFO, string);
|
||||
}
|
||||
|
||||
int main(int argc, char* argv[])
|
||||
{
|
||||
if (SDL_Init(SDL_INIT_AUDIO) < 0) {
|
||||
// Handle error
|
||||
}
|
||||
|
||||
desiredSpec = malloc(sizeof(SDL_AudioSpec));
|
||||
memset(desiredSpec, 0, sizeof(SDL_AudioSpec));
|
||||
desiredSpec->freq = 44100; // Sample rate
|
||||
desiredSpec->format = AUDIO_F32; // Audio format
|
||||
desiredSpec->channels = 2;
|
||||
desiredSpec->samples = 4096; // Buffer size
|
||||
desiredSpec->callback = audio_callback; // Set the callback
|
||||
|
||||
SDL_AudioDeviceID audioDevice = SDL_OpenAudioDevice(SDL_GetAudioDeviceName(2, 1), 1, desiredSpec, NULL, SDL_AUDIO_ALLOW_FORMAT_CHANGE);
|
||||
if (SDL_GetError()[0] != '\0') {
|
||||
printf("SDL Error : %s\n", SDL_GetError());
|
||||
}
|
||||
printf("Name: %s\n", SDL_GetAudioDeviceName(2, 1));
|
||||
if (audioDevice == 0) {
|
||||
// Handle error
|
||||
}
|
||||
|
||||
// Start audio playback
|
||||
SDL_PauseAudioDevice(audioDevice, 0);
|
||||
if (SDL_GetError()[0] != '\0') {
|
||||
printf("SDL Error : %s\n", SDL_GetError());
|
||||
}
|
||||
|
||||
SDL_Event event;
|
||||
int running = 1;
|
||||
while (running) {
|
||||
while (SDL_PollEvent(&event)) {
|
||||
SDL_Keycode keysym = event.key.keysym.sym;
|
||||
switch (event.type) {
|
||||
case SDL_QUIT:
|
||||
running = 0;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
SDL_CloseAudioDevice(audioDevice);
|
||||
SDL_Quit();
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -1,98 +0,0 @@
|
||||
#include <SDL2/SDL.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
typedef struct {
|
||||
Uint8* data;
|
||||
int current_pos;
|
||||
int max_length;
|
||||
} BufferType;
|
||||
|
||||
SDL_AudioDeviceID dev;
|
||||
|
||||
void audio_callback(void* userdata, Uint8* stream, int len)
|
||||
{
|
||||
BufferType* buffer = (BufferType*)userdata;
|
||||
|
||||
printf("callback: %u %u\n", *stream, len);
|
||||
int space_left = buffer->max_length - buffer->current_pos;
|
||||
if (space_left <= 0) {
|
||||
// Buffer is full; stop the device
|
||||
SDL_PauseAudioDevice(dev, 1);
|
||||
printf("Buffer full, stopping recording.\n");
|
||||
return;
|
||||
}
|
||||
|
||||
if (len > space_left) {
|
||||
len = space_left;
|
||||
}
|
||||
|
||||
memcpy(buffer->data + buffer->current_pos, stream, len);
|
||||
buffer->current_pos += len;
|
||||
}
|
||||
|
||||
int main(int argc, char* argv[])
|
||||
{
|
||||
if (SDL_Init(SDL_INIT_AUDIO) < 0) {
|
||||
fprintf(stderr, "Failed to initialize SDL: %s\n", SDL_GetError());
|
||||
return 1;
|
||||
}
|
||||
|
||||
BufferType audio_buffer;
|
||||
audio_buffer.max_length = 44100 * 5 * sizeof(float) * 2; // 5 seconds of stereo float audio
|
||||
audio_buffer.data = (Uint8*)malloc(audio_buffer.max_length);
|
||||
if (audio_buffer.data == NULL) {
|
||||
fprintf(stderr, "Failed to allocate audio buffer\n");
|
||||
SDL_Quit();
|
||||
return 1;
|
||||
}
|
||||
audio_buffer.current_pos = 0;
|
||||
|
||||
SDL_AudioSpec desired_spec, obtained_spec;
|
||||
SDL_zero(desired_spec);
|
||||
desired_spec.freq = 44100;
|
||||
desired_spec.format = AUDIO_F32SYS;
|
||||
desired_spec.channels = 2;
|
||||
desired_spec.samples = 512;
|
||||
desired_spec.callback = audio_callback;
|
||||
desired_spec.userdata = &audio_buffer;
|
||||
|
||||
dev = SDL_OpenAudioDevice(NULL, 1, &desired_spec, &obtained_spec, 0);
|
||||
if (dev == 0) {
|
||||
fprintf(stderr, "Failed to open audio device: %s\n", SDL_GetError());
|
||||
free(audio_buffer.data);
|
||||
SDL_Quit();
|
||||
return 1;
|
||||
}
|
||||
|
||||
printf("Audio device opened successfully.\n");
|
||||
printf("Obtained Spec:\n");
|
||||
printf(" Frequency: %d\n", obtained_spec.freq);
|
||||
printf(" Format: 0x%X\n", obtained_spec.format);
|
||||
printf(" Channels: %d\n", obtained_spec.channels);
|
||||
printf(" Samples: %d\n", obtained_spec.samples);
|
||||
|
||||
SDL_PauseAudioDevice(dev, 0); // Start recording
|
||||
printf("Recording started.\n");
|
||||
|
||||
SDL_Event event;
|
||||
while (audio_buffer.current_pos < audio_buffer.max_length) {
|
||||
while (SDL_PollEvent(&event)) {
|
||||
if (event.type == SDL_QUIT) {
|
||||
printf("Quit event received.\n");
|
||||
goto cleanup;
|
||||
}
|
||||
}
|
||||
SDL_Delay(100);
|
||||
}
|
||||
|
||||
printf("Recording complete. Total bytes recorded: %d\n", audio_buffer.current_pos);
|
||||
|
||||
cleanup:
|
||||
SDL_PauseAudioDevice(dev, 1); // Stop recording
|
||||
SDL_CloseAudioDevice(dev);
|
||||
free(audio_buffer.data);
|
||||
SDL_Quit();
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -1,85 +0,0 @@
|
||||
#include <SDL2/SDL.h>
|
||||
#include <SDL2/SDL_audio.h>
|
||||
#include <SDL2/SDL_image.h>
|
||||
#include <SDL2/SDL_ttf.h>
|
||||
|
||||
using namespace std;
|
||||
|
||||
SDL_AudioSpec want, have;
|
||||
SDL_AudioDeviceID player;
|
||||
|
||||
void SDLCALL callback_player( void* userdata, Uint8* stream, int len)
|
||||
{
|
||||
|
||||
for (int i = 0; i < len; i ++) {
|
||||
auto value = Uint8(sin(i) * 1000);
|
||||
stream[i] = value ;
|
||||
}
|
||||
}
|
||||
|
||||
auto setupAudioPlayer()
|
||||
{
|
||||
|
||||
printf("### Device Player ###\n");
|
||||
int num = SDL_GetNumAudioDevices(false);
|
||||
printf("num: %d\n", num);
|
||||
for (int i = 0; i < num; i++) {
|
||||
auto name = SDL_GetAudioDeviceName(i, false);
|
||||
printf("%d: %s\n", i, name);
|
||||
}
|
||||
|
||||
int deviceIndex;
|
||||
printf("select device to player audio: ");
|
||||
scanf("%d", &deviceIndex);
|
||||
printf("\n");
|
||||
|
||||
SDL_memset(&want, 0, sizeof(want)); /* or SDL_zero(want) */
|
||||
want.freq = 44100;
|
||||
want.format = AUDIO_F32;
|
||||
want.channels = 2;
|
||||
want.samples = 1024;
|
||||
want.callback = callback_player; // you wrote this function elsewhere.
|
||||
//want.size = 512;
|
||||
|
||||
SDL_AudioDeviceID player = SDL_OpenAudioDevice(SDL_GetAudioDeviceName(deviceIndex, false), SDL_FALSE, &want, &have, SDL_AUDIO_ALLOW_FORMAT_CHANGE);
|
||||
if (player == 0) {
|
||||
printf("Failed to open player device! SDL Error: %s", SDL_GetError());
|
||||
|
||||
} else {
|
||||
|
||||
printf("freq %d \nformat %d \nchannels %d \nsamples %d\n", have.freq, have.format, have.channels, have.samples);
|
||||
}
|
||||
|
||||
return player;
|
||||
}
|
||||
|
||||
void destroyAudio()
|
||||
{
|
||||
|
||||
SDL_CloseAudioDevice(player);
|
||||
SDL_Quit();
|
||||
}
|
||||
|
||||
int main(int n, char** args)
|
||||
{
|
||||
|
||||
int err = SDL_Init(SDL_INIT_AUDIO);
|
||||
printf("error: %d", err);
|
||||
if (err < 0) {
|
||||
printf("erorr: %d\n", err);
|
||||
printf("Failed to init audio! SDL Error: %s", SDL_GetError());
|
||||
}
|
||||
//recorder = setupAudioRecorder();
|
||||
auto player = setupAudioPlayer();
|
||||
printf("player: %d\n", player);
|
||||
//loadWave();
|
||||
|
||||
printf("playing\n");
|
||||
//SDL_PauseAudioDevice(recorder, 0);
|
||||
SDL_PauseAudioDevice(player, 0);
|
||||
//SDL_SemWait(sem);
|
||||
SDL_Delay(10000);
|
||||
destroyAudio();
|
||||
//system("pause");
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user