Thank you very much, Gerhard!
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Hello together!
On Wed, 24 Jun 2020 17:37:46 -0300
Sleep schrieb:
> // Insert samples to framebuffer.
> wav = fopen("pcm1611s.wav", "r");
> fseek(wav, 0L, SEEK_END);
> size = ftell(wav);
> fseek(wav, 0L, SEEK_SET);
> buffer = malloc(size);
> fread(buffer,
Nevermind, it is frames * STEREO here, this is where the error is.
ptrbuffer += FRAMEBUFFERSIZE * STEREO * BITS
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https://files.catbox.moe/5jvu18.wav
Here is the recording of the effect as requested, new code below.
#include
#include
#include
#define STEREO 2
#define BITS16 / 8
#define FRAMEBUFFERSIZE 512 // in samples
#define PERIODS 2
#define SAMPLERATE 11025
snd_pcm_hw_params_set_buffer_size() and
snd_pcm_hw_params_set_period_size() returns an error, a mere "Invalid
argument." which doesn't help much, commenting them out doesn't appear
to address the scratchy sound.
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I've used snd_pcm_prepare() because underrun (-EPIPE) was occurring
because I had put the wrong value for frames, but despite adjusting the
value of the frames, I am still getting the scratchy effect, here is the
current code I have, now I am really stuck. Also yeah, "scratchy" would
be a bette
now the problem is that the sound is skipping.
Can you provide a recording of what it sounds like?
In alsa-lib there is an example test/latency.c which just moves samples from
one device to another.
When I run it, the sound that comes out of my speakers is what I would call
"scratchy".
I su
Update, forgot snd_pcm_prepare(), now the problem is that the sound is
skipping.
#include
#include
#include
#define STEREO 2
#define BITS 16 / 8
#define FRAMEBUFFERSIZE 512 // in samples
#define PERIODS 2
#define SAMPLERATE 11025
int main(void)
{
snd_pcm_t *handle;
uint32_t channels
Hello, I am trying to learn how to use the ALSA API library, I have the
following program to play a stereo 16 bit wav file at 11025 Hz. I have
created a buffer with 256 frames with 2 periods (period size 128
frames), but it only outputs a single tick and the program ends.
Appreciate any help.
