Esempi in C++ (Cpp) per idma_getpos

Esempio n. 1

File: idma.c Progetto: alianmohammad/gem5-linux-kernel

static snd_pcm_uframes_t
idma_pointer(struct snd_pcm_substream *substream)
{
    struct snd_pcm_runtime *runtime = substream->runtime;
    struct idma_ctrl *prtd = runtime->private_data;
    dma_addr_t src;
    unsigned long res;

    spin_lock(&prtd->lock);

    idma_getpos(&src);
    res = src - prtd->start;

    spin_unlock(&prtd->lock);

    return bytes_to_frames(substream->runtime, res);
}

Esempio n. 2

File: idma.c Progetto: 1yankeedt/D710BST_FL24_Kernel

static snd_pcm_uframes_t
	idma_pointer(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct idma_ctrl *prtd = runtime->private_data;
	dma_addr_t src;
	unsigned long res, flags;

	spin_lock_irqsave(&prtd->lock, flags);

	idma_getpos(&src, substream);
	res = src - prtd->start;

	spin_unlock_irqrestore(&prtd->lock, flags);

	if (res >= snd_pcm_lib_buffer_bytes(substream)) {
		if (res == snd_pcm_lib_buffer_bytes(substream))
			res = 0;
	}

	return bytes_to_frames(substream->runtime, res);
}