Audio record and playback now works + removed comments
Fixed by moving SDL_AudioSpec definition to init() function.
This commit is contained in:
parent
ba14ddaf04
commit
2ef08b6b1b
92
main.c
92
main.c
@ -1,13 +1,8 @@
|
||||
#include <SDL2/SDL.h>
|
||||
#include <SDL2/SDL_audio.h>
|
||||
#include <SDL2/SDL_image.h>
|
||||
#include <SDL2/SDL_ttf.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#include "log.h"
|
||||
/*
|
||||
* INFO: I will mark places to look at with INFO:
|
||||
*/
|
||||
const int SCREEN_WIDTH = 640;
|
||||
const int SCREEN_HEIGHT = 480;
|
||||
|
||||
@ -54,7 +49,7 @@ int text_texture_load(text_texture* text_texture, char* string);
|
||||
int text_texture_render(text_texture* text_texture, int x, int y);
|
||||
int text_texture_free(text_texture* text_texture);
|
||||
/*
|
||||
* Audio INFO: audio related declarations and callback here.
|
||||
* Audio
|
||||
*/
|
||||
int num_devices = 0;
|
||||
|
||||
@ -119,14 +114,12 @@ int main(int argc, char* argv[])
|
||||
break;
|
||||
|
||||
case SDL_KEYDOWN:
|
||||
// INFO: main state logic here.
|
||||
handle_input(&event, &state);
|
||||
break;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
// INFO: more state logic here. I check the buffer write position here
|
||||
handle_task(&state);
|
||||
|
||||
sprintf(char_buffer, default_fmt, state.device_index);
|
||||
@ -157,6 +150,7 @@ int main(int argc, char* argv[])
|
||||
}
|
||||
|
||||
cleanup:
|
||||
printf("Cleanup");
|
||||
SDL_CloseAudioDevice(state.recording_device_id);
|
||||
SDL_CloseAudioDevice(state.playback_device_id);
|
||||
text_texture_free(&display_text_texture);
|
||||
@ -172,48 +166,33 @@ void handle_input(SDL_Event* event, state* state)
|
||||
{
|
||||
SDL_Keycode keysym = event->key.keysym.sym;
|
||||
switch (state->application_state) {
|
||||
// INFO: init of recording audio device here
|
||||
|
||||
case SELECTING_DEVICE:
|
||||
switch (keysym) {
|
||||
case SDLK_y:
|
||||
case SDLK_RETURN:
|
||||
// INFO: init audio device here and below
|
||||
// Here it initialises everytime you press enter or y, and
|
||||
// unpauses device immediately. Seems to work mor consistently
|
||||
if (state->recording_device_id)
|
||||
SDL_CloseAudioDevice(state->recording_device_id);
|
||||
state->recording_device_id =
|
||||
audio_recording_init(state->device_index, NULL);
|
||||
|
||||
state->recording_device_id = audio_recording_init(state->device_index, NULL);
|
||||
if (state->device_index == -1 || !state->recording_device_id) break;
|
||||
recording_buffer_position = 0;
|
||||
// INFO: calling this should unpause the device and start calling the callback
|
||||
SDL_PauseAudioDevice(state->recording_device_id, 0);
|
||||
/*SDL_UnlockAudioDevice(state->recording_device_id);*/
|
||||
// INFO: state change looks like this here
|
||||
state->application_state = RECORDING;
|
||||
break;
|
||||
case SDLK_ESCAPE:
|
||||
state->device_index = -1;
|
||||
SDL_CloseAudioDevice(state->recording_device_id);
|
||||
/*state->device_index = -1;*/
|
||||
/*SDL_CloseAudioDevice(state->recording_device_id);*/
|
||||
break;
|
||||
}
|
||||
int device_index_new = select_device(&event->key, num_devices);
|
||||
if (device_index_new == -1) break;
|
||||
if (state->device_index != -1 && device_index_new == -1) break;
|
||||
state->device_index = device_index_new;
|
||||
// INFO: inititialising here seems to be less consistent. When I
|
||||
// spam enter or y after initialising here, Sometimes I see
|
||||
// callback being called sometimes not.
|
||||
/*SDL_CloseAudioDevice(state->recording_device_id);*/
|
||||
/*state->recording_device_id = audio_recording_init(state->device_index, NULL);*/
|
||||
|
||||
break;
|
||||
|
||||
case RECORDING:
|
||||
switch (keysym) {
|
||||
case SDLK_y:
|
||||
SDL_PauseAudioDevice(state->recording_device_id, 0);
|
||||
break;
|
||||
case SDLK_q:
|
||||
case SDLK_ESCAPE:
|
||||
SDL_PauseAudioDevice(state->recording_device_id, 1);
|
||||
@ -222,16 +201,16 @@ void handle_input(SDL_Event* event, state* state)
|
||||
break;
|
||||
}
|
||||
break;
|
||||
// INFO: init of playback audio device here. Can't seem to get it to play / call callback
|
||||
|
||||
case RECORDED:
|
||||
switch (keysym) {
|
||||
case SDLK_y:
|
||||
case SDLK_RETURN:
|
||||
if (state->playback_device_id)
|
||||
SDL_CloseAudioDevice(state->playback_device_id);
|
||||
state->playback_device_id = audio_playback_init(NULL);
|
||||
recording_buffer_position = 0;
|
||||
SDL_PauseAudioDevice(state->playback_device_id, 0);
|
||||
/*SDL_UnlockAudioDevice(state->playback_device_id);*/
|
||||
state->application_state = PLAYBACK;
|
||||
break;
|
||||
case SDLK_q:
|
||||
@ -246,6 +225,7 @@ void handle_input(SDL_Event* event, state* state)
|
||||
switch (keysym) {
|
||||
case SDLK_q:
|
||||
case SDLK_ESCAPE:
|
||||
SDL_PauseAudioDevice(state->playback_device_id, 1);
|
||||
state->application_state = RECORDED;
|
||||
break;
|
||||
}
|
||||
@ -262,12 +242,9 @@ void handle_task(state* state)
|
||||
break;
|
||||
|
||||
case RECORDING:
|
||||
// INFO: check buffer position here and stop if reaces the end
|
||||
SDL_LockAudioDevice(state->recording_device_id);
|
||||
/*printf("buf pos: %u\n", recording_buffer_position);*/
|
||||
if (recording_buffer_position >= recording_buffer_position_max) {
|
||||
SDL_UnlockAudioDevice(state->recording_device_id);
|
||||
SDL_PauseAudioDevice(state->recording_device_id, 1);
|
||||
SDL_CloseAudioDevice(state->recording_device_id);
|
||||
state->application_state = RECORDED;
|
||||
break;
|
||||
@ -279,11 +256,9 @@ void handle_task(state* state)
|
||||
break;
|
||||
|
||||
case PLAYBACK:
|
||||
// INFO:
|
||||
SDL_LockAudioDevice(state->playback_device_id);
|
||||
if (recording_buffer_position >= recording_buffer_position_max) {
|
||||
SDL_UnlockAudioDevice(state->playback_device_id);
|
||||
SDL_PauseAudioDevice(state->playback_device_id, 1);
|
||||
SDL_CloseAudioDevice(state->playback_device_id);
|
||||
state->application_state = RECORDED;
|
||||
break;
|
||||
@ -327,6 +302,20 @@ int init()
|
||||
return 0;
|
||||
}
|
||||
|
||||
SDL_zero(recording_spec);
|
||||
recording_spec.freq = 44100;
|
||||
recording_spec.format = AUDIO_S16;
|
||||
recording_spec.channels = 2;
|
||||
recording_spec.samples = 4096;
|
||||
recording_spec.callback = audio_recording_callback;
|
||||
|
||||
SDL_zero(playback_spec);
|
||||
playback_spec.freq = 44100;
|
||||
playback_spec.format = AUDIO_S16;
|
||||
playback_spec.channels = 2;
|
||||
playback_spec.samples = 4096;
|
||||
playback_spec.callback = audio_playback_callback;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
@ -368,10 +357,10 @@ void application_state_to_string(application_state state, char* string)
|
||||
sprintf(string, "Selecting Device [0-9] -> [y/RET], ");
|
||||
break;
|
||||
case RECORDING:
|
||||
sprintf(string, "Recording");
|
||||
sprintf(string, "Recording [ESC] to cancel");
|
||||
break;
|
||||
case RECORDED:
|
||||
sprintf(string, "Recorded");
|
||||
sprintf(string, "Recorded [y/RET] to play [ESC] to Select");
|
||||
break;
|
||||
case PLAYBACK:
|
||||
sprintf(string, "Playing");
|
||||
@ -442,19 +431,9 @@ int text_texture_free(text_texture* text_texture)
|
||||
SDL_DestroyTexture(text_texture->texture);
|
||||
return 1;
|
||||
}
|
||||
// INFO: device init here
|
||||
// Most of the audio stuff I copied from an example
|
||||
|
||||
SDL_AudioDeviceID audio_recording_init(int index, void* userdata)
|
||||
{
|
||||
// INFO: audio spec and callback
|
||||
SDL_zero(recording_spec);
|
||||
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) {
|
||||
@ -464,7 +443,6 @@ SDL_AudioDeviceID audio_recording_init(int index, void* userdata)
|
||||
|
||||
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;
|
||||
// INFO: I just copied example where they allocated 1 second worth of buffer so it doesn't die
|
||||
recording_buffer_size = RECORDING_BUFFER_SECONDS * bytes_per_second;
|
||||
recording_buffer_position_max = MAX_RECORDING_SECONDS * bytes_per_second;
|
||||
|
||||
@ -473,21 +451,13 @@ SDL_AudioDeviceID audio_recording_init(int index, void* userdata)
|
||||
|
||||
return device_id;
|
||||
}
|
||||
// INFO:
|
||||
|
||||
SDL_AudioDeviceID audio_playback_init(void* userdata)
|
||||
{
|
||||
if (!recording_buffer) {
|
||||
printf("Audio buffer not initialized");
|
||||
return 0;
|
||||
}
|
||||
// INFO: audio spec and callback
|
||||
SDL_zero(playback_spec);
|
||||
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) {
|
||||
@ -512,23 +482,21 @@ void audio_buffer_destroy()
|
||||
recording_buffer_size = 0;
|
||||
recording_buffer_position = 0;
|
||||
}
|
||||
// INFO: callback here
|
||||
|
||||
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);
|
||||
printf(string, "Record pos: %u %u\n", recording_buffer_position, len);
|
||||
log_message(LOG_INFO, string);
|
||||
}
|
||||
// INFO:
|
||||
|
||||
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);
|
||||
printf(string, "Playback pos: %u %u", recording_buffer_position, len);
|
||||
log_message(LOG_INFO, string);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user