diff options
Diffstat (limited to 'WasmAudio/main.c')
| -rw-r--r-- | WasmAudio/main.c | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/WasmAudio/main.c b/WasmAudio/main.c index 4cb9f2e..86d307f 100644 --- a/WasmAudio/main.c +++ b/WasmAudio/main.c @@ -51,7 +51,7 @@ //Maximum recording time plus padding -#define RECORDING_BUFFER_SECONDS (2) +#define RECORDING_BUFFER_SECONDS (1) //Maximum recording time #define MAX_RECORDING_SECONDS (RECORDING_BUFFER_SECONDS) #define RECORDING_BUFFER_CHANNELS (2) @@ -78,6 +78,7 @@ static SDL_AudioDeviceID recordingDeviceId = 0; static SDL_AudioDeviceID playbackDeviceId = 0; int audio_buf_position=0; int current_state=0; +int audio_buf_full=0; //FIR filter stuff FILE *f_1,*f_2; @@ -97,27 +98,30 @@ int audio_rec_buffer_max_size=-1; static uint8_t audio_rec_buffer_[BUFSIZE]; #define PROCESS_BUF_SIZE (BUFSIZE) uint8_t *audio_rec_buffer=NULL; -static double process_buf[PROCESS_BUF_SIZE+200]; -static double process_buf2[PROCESS_BUF_SIZE+200]; +static double process_buf[PROCESS_BUF_SIZE]; +static double process_buf2[PROCESS_BUF_SIZE]; void audio_recording_callback(void *data, uint8_t *insamples, int len) { - if (audio_buf_position<audio_rec_buffer_size) { + if (audio_buf_position+len<audio_rec_buffer_size) { memcpy( audio_rec_buffer+audio_buf_position, insamples, len); audio_buf_position += len; + } else { + audio_buf_full = 1; } } void audio_playback_callback(void *data, uint8_t *outsamples, int len) { printf("call play %d\n",audio_buf_position); - if (audio_buf_position<=(audio_rec_buffer_size-SDL_CALLBACK_USED_BUFSIZE)) { + if (audio_buf_position+len <(audio_rec_buffer_size)) { memcpy( outsamples, audio_rec_buffer+audio_buf_position,len); audio_buf_position += len; } else { memset( outsamples, 0, len*sizeof(double)); + audio_buf_full = 1; } } @@ -136,7 +140,7 @@ enum RecordingState void convert_double_to_f32() { int i=0; - for (i=0;i<BUFSIZE2;i+=4) { + for (i=0;i<BUFSIZE;i+=4) { double d = process_buf[i/4]; if (i/4 > BUFSIZE4) { printf("Buffer overflow convert_double_to_f32"); @@ -158,7 +162,7 @@ void convert_double_to_f32() { void convert_f32_to_double() { int i=0; - for (i=0;i<BUFSIZE2;i+=4) { + for (i=0;i<BUFSIZE;i+=4) { int32_t i32 = ((audio_rec_buffer[i+3] << 24) | (audio_rec_buffer[i+2] << 16) | (audio_rec_buffer[i+1] << 8) | (audio_rec_buffer[i+0]) ); float *ff = &i32; @@ -432,6 +436,7 @@ int main_tick() { //record if stopped if ((current_state == STOPPED) || (current_state == RECORDED)) { audio_buf_position = 0; + audio_buf_full = 0; SDL_PauseAudioDevice(recordingDeviceId, SDL_FALSE); current_state = RECORDING; printf("State: RECORDING\n"); @@ -443,6 +448,7 @@ int main_tick() { if (current_state == RECORDED) { audio_buf_position = 0; SDL_PauseAudioDevice( playbackDeviceId, SDL_FALSE ); + audio_buf_full = 0; current_state = PLAYBACK; printf("State: PLAYBACK\n"); } /*else if (current_state == PLAYBACK) { @@ -487,7 +493,7 @@ int main_tick() { if (current_state == RECORDING) { SDL_LockAudioDevice( recordingDeviceId ); printf("recording=%d\n",audio_buf_position); - if( audio_buf_position > audio_rec_buffer_size ) + if( (audio_buf_position > audio_rec_buffer_size) || (audio_buf_full) ) { //Stop recording audio SDL_PauseAudioDevice( recordingDeviceId, SDL_TRUE ); @@ -500,7 +506,7 @@ int main_tick() { SDL_LockAudioDevice( playbackDeviceId ); //Finished playback printf("audio_buf_position=%d\n",audio_buf_position); - if( audio_buf_position > audio_rec_buffer_size ) + if( (audio_buf_position > audio_rec_buffer_size) || (audio_buf_full) ) { //Stop playing audio //SDL_Delay(500); @@ -563,7 +569,7 @@ void main_loop() if (current_state == RECORDING) { SDL_LockAudioDevice( recordingDeviceId ); //printf("recording=%d\n",audio_buf_position); - if( audio_buf_position > audio_rec_buffer_size ) + if( (audio_buf_position > audio_rec_buffer_size) || (audio_buf_full) ) { //Stop recording audio SDL_PauseAudioDevice( recordingDeviceId, SDL_TRUE ); @@ -576,7 +582,7 @@ void main_loop() SDL_LockAudioDevice( playbackDeviceId ); //Finished playback //printf("audio_buf_position=%d audio_rec_buffer_size=%d\n",audio_buf_position,audio_rec_buffer_size); - if( audio_buf_position >= (audio_rec_buffer_size-SDL_CALLBACK_USED_BUFSIZE) ) + if( (audio_buf_position >= (audio_rec_buffer_size-SDL_CALLBACK_USED_BUFSIZE)) || (audio_buf_full) ) { //Stop playing audio SDL_PauseAudioDevice( playbackDeviceId, SDL_TRUE ); |