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microphone example: recover from underflow

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This commit is contained in:
Andrew Kelley 2015-07-24 13:33:41 -07:00
parent 3d3f9f91a2
commit ab8a2c2ffe
1 changed files with 4 additions and 6 deletions
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10
example/microphone.c
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@ -134,8 +134,10 @@ static void write_callback(struct SoundIoOutStream *outstream, int requested_fra
} }
static void underflow_callback(struct SoundIoOutStream *outstream) { static void underflow_callback(struct SoundIoOutStream *outstream) {
static int count = 0; char *write_ptr = soundio_ring_buffer_write_ptr(ring_buffer);
fprintf(stderr, "underflow %d\n", count++); int bytes_to_fill = outstream->buffer_duration * outstream->sample_rate * outstream->bytes_per_frame;
memset(write_ptr, 0, bytes_to_fill);
soundio_ring_buffer_advance_write_ptr(ring_buffer, bytes_to_fill);
} }
static int usage(char *exe) { static int usage(char *exe) {
@ -289,10 +291,6 @@ int main(int argc, char **argv) {
ring_buffer = soundio_ring_buffer_create(soundio, capacity); ring_buffer = soundio_ring_buffer_create(soundio, capacity);
if (!ring_buffer) if (!ring_buffer)
panic("unable to create ring buffer: out of memory"); panic("unable to create ring buffer: out of memory");
char *write_ptr = soundio_ring_buffer_write_ptr(ring_buffer);
int bytes_to_fill = outstream->buffer_duration * outstream->sample_rate * outstream->bytes_per_frame;
memset(write_ptr, 0, bytes_to_fill);
soundio_ring_buffer_advance_write_ptr(ring_buffer, bytes_to_fill);
if ((err = soundio_instream_start(instream))) if ((err = soundio_instream_start(instream)))
panic("unable to start input device: %s", soundio_strerror(err)); panic("unable to start input device: %s", soundio_strerror(err));