C++ snd_pcm_set_runtime_buffer函数代码示例

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本文整理汇总了C++中snd_pcm_set_runtime_buffer函数的典型用法代码示例。如果您正苦于以下问题：C++ snd_pcm_set_runtime_buffer函数的具体用法？C++ snd_pcm_set_runtime_buffer怎么用？C++ snd_pcm_set_runtime_buffer使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了snd_pcm_set_runtime_buffer函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: omap_pcm_hw_free

static int omap_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct omap_runtime_data *prtd = runtime->private_data;

	if (prtd->dma_data == NULL)
		return 0;

	omap_dma_unlink_lch(prtd->dma_ch, prtd->dma_ch);
	omap_free_dma(prtd->dma_ch);
	prtd->dma_data = NULL;

	snd_pcm_set_runtime_buffer(substream, NULL);

	return 0;
}

开发者ID:Kra1o5，项目名称:android_kernel_huawei_u8815-gb，代码行数:16，代码来源:omap-pcm.c

示例2: s3c24xx_pcm_hw_free

static int s3c24xx_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct s3c24xx_runtime_data *prtd = substream->runtime->private_data;

	s3cdbg("Entered %s\n", __FUNCTION__);

	/* TODO - do we need to ensure DMA flushed */
	snd_pcm_set_runtime_buffer(substream, NULL);

	if (prtd->params) {
		s3c2410_dma_free(prtd->params->channel, prtd->params->client);
		prtd->params = NULL;
	}

	return 0;
}

开发者ID:Astinj，项目名称:I5700-kernel-2.6.32.9，代码行数:16，代码来源:s3c-pcm.c

示例3: snd_imx_pcm_hw_params

static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct imx_pcm_runtime_data *iprtd = runtime->private_data;
	int i;
	unsigned long dma_addr;

	imx_ssi_dma_alloc(substream);

	iprtd->size = params_buffer_bytes(params);
	iprtd->periods = params_periods(params);
	iprtd->period = params_period_bytes(params);
	iprtd->offset = 0;
	iprtd->period_time = HZ / (params_rate(params) /
			params_period_size(params));

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);

	if (iprtd->sg_count != iprtd->periods) {
		kfree(iprtd->sg_list);

		iprtd->sg_list = kcalloc(iprtd->periods + 1,
				sizeof(struct scatterlist), GFP_KERNEL);
		if (!iprtd->sg_list)
			return -ENOMEM;
		iprtd->sg_count = iprtd->periods + 1;
	}

	sg_init_table(iprtd->sg_list, iprtd->sg_count);
	dma_addr = runtime->dma_addr;

	for (i = 0; i < iprtd->periods; i++) {
		iprtd->sg_list[i].page_link = 0;
		iprtd->sg_list[i].offset = 0;
		iprtd->sg_list[i].dma_address = dma_addr;
		iprtd->sg_list[i].length = iprtd->period;
		dma_addr += iprtd->period;
	}

	/* close the loop */
	iprtd->sg_list[iprtd->sg_count - 1].offset = 0;
	iprtd->sg_list[iprtd->sg_count - 1].length = 0;
	iprtd->sg_list[iprtd->sg_count - 1].page_link =
			((unsigned long) iprtd->sg_list | 0x01) & ~0x02;
	return 0;
}

开发者ID:AdiPat，项目名称:android_kernel_tegra_n1，代码行数:47，代码来源:imx-pcm-dma-mx2.c

示例4: snd_imx_pcm_hw_params

static int snd_imx_pcm_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct imx_pcm_runtime_data *iprtd = runtime->private_data;

	iprtd->size = params_buffer_bytes(params);
	iprtd->periods = params_periods(params);
	iprtd->period = params_period_bytes(params) ;
	iprtd->offset = 0;
	iprtd->last_offset = 0;
	iprtd->poll_time = HZ / (params_rate(params) / params_period_size(params));

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);

	return 0;
}

开发者ID:mbanana，项目名称:linux-2.6，代码行数:17，代码来源:imx-pcm-fiq.c

示例5: rockchip_pcm_hw_free

static int rockchip_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct rockchip_runtime_data *prtd = substream->runtime->private_data;

	DBG("Enter::%s----%d\n",__FUNCTION__,__LINE__);
	/* TODO - do we need to ensure DMA flushed */
	snd_pcm_set_runtime_buffer(substream, NULL);

	if (prtd->params) {
#ifdef CONFIG_SND_I2S_DMA_EVENT_DYNAMIC		
		rk29_dma_free(prtd->params->channel, prtd->params->client);
		prtd->params = NULL;
#endif		
	}

	return 0;
}

开发者ID:markyzq，项目名称:px2-android-kernel-3.0，代码行数:17，代码来源:rk29_pcm.c

示例6: hi3630_srcup_normal_hw_free

static int hi3630_srcup_normal_hw_free(struct snd_pcm_substream *substream)
{
	struct hi3630_srcup_runtime_data *prtd = substream->runtime->private_data;
	struct hi3630_srcup_data *pdata = prtd->pdata;
	int ret = 0;

	if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
		/* clear interrupt */
		hi3630_srcup_reg_write(pdata, HI3630_SRCUP_CH_INT_FLAG_REG, SRCUP_CH0_MASK);

		ret = snd_pcm_lib_free_pages(substream);
	}

	snd_pcm_set_runtime_buffer(substream, NULL);

	return ret;
}

开发者ID:HuaweiHonor4C，项目名称:kernel_hi6210sft_mm，代码行数:17，代码来源:hi3630_srcup_normal.c

示例7: snd_pcm_lib_free_pages

/**
 * snd_pcm_lib_free_pages - release the allocated DMA buffer.
 * @substream: the substream to release the DMA buffer
 *
 * Releases the DMA buffer allocated via snd_pcm_lib_malloc_pages().
 *
 * Returns zero if successful, or a negative error code on failure.
 */
int snd_pcm_lib_free_pages(snd_pcm_substream_t *substream)
{
	snd_pcm_runtime_t *runtime;

	snd_assert(substream != NULL, return -EINVAL);
	runtime = substream->runtime;
	snd_assert(runtime != NULL, return -EINVAL);
	if (runtime->dma_area == NULL)
		return 0;
	if (runtime->dma_buffer_p != &substream->dma_buffer) {
		/* it's a newly allocated buffer.  release it now. */
		snd_dma_free_pages(runtime->dma_buffer_p);
		kfree(runtime->dma_buffer_p);
	}
	snd_pcm_set_runtime_buffer(substream, NULL);
	return 0;
}

开发者ID:Dronevery，项目名称:JetsonTK1-kernel，代码行数:25，代码来源:pcm_memory.c

示例8: snd_pcm_lib_free_pages

/**
 * snd_pcm_lib_free_pages - release the allocated DMA buffer.
 * @substream: the substream to release the DMA buffer
 *
 * Releases the DMA buffer allocated via snd_pcm_lib_malloc_pages().
 *
 * Return: Zero if successful, or a negative error code on failure.
 */
int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime;

	if (PCM_RUNTIME_CHECK(substream))
		return -EINVAL;
	runtime = substream->runtime;
	if (runtime->dma_area == NULL)
		return 0;
	if (runtime->dma_buffer_p != &substream->dma_buffer) {
		/* it's a newly allocated buffer.  release it now. */
		snd_dma_free_pages(runtime->dma_buffer_p);
		kfree(runtime->dma_buffer_p);
	}
	snd_pcm_set_runtime_buffer(substream, NULL);
	return 0;
}

开发者ID:AlexShiLucky，项目名称:linux，代码行数:25，代码来源:pcm_memory.c

示例9: sun4i_pcm_hw_free

static int sun4i_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct sun4i_runtime_data *prtd = substream->runtime->private_data;
	
	/* TODO - do we need to ensure DMA flushed */
	if(prtd->params)
  	sw_dma_ctrl(prtd->params->channel, SW_DMAOP_FLUSH);
  	
	snd_pcm_set_runtime_buffer(substream, NULL);
  
	if (prtd->params) {
		sw_dma_free(prtd->params->channel, prtd->params->client);
		prtd->params = NULL;
	}

	return 0;
}

开发者ID:panlinbing，项目名称:lichee_linux-3.0，代码行数:17，代码来源:sun4i-i2sdma.c

示例10: sunxi_pcm_hw_params

static int sunxi_pcm_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
{
	struct sunxi_dma_params *dmap;
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct device *dev = rtd->platform->dev;
	struct dma_chan *chan = snd_dmaengine_pcm_get_chan(substream);
	struct dma_slave_config slave_config;
	int ret;

	dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
	ret = snd_hwparams_to_dma_slave_config(substream, params, &slave_config);
	if (ret) {
		dev_err(dev, "hw params config failed with err %d\n", ret);
		return ret;
	}

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		if (SNDRV_PCM_FORMAT_S16_LE == params_format(params)) {
			slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
			slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
		} else {
			slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
			slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
		}
		slave_config.dst_addr = dmap->dma_addr;
		slave_config.dst_maxburst = 4;
		slave_config.src_maxburst = 4;
		slave_config.slave_id = sunxi_slave_id(DRQDST_DAUDIO_1_TX, DRQSRC_SDRAM);
	} else {
		slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
		slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
		slave_config.src_addr = dmap->dma_addr;
		slave_config.dst_maxburst = 4;
		slave_config.src_maxburst = 4;
		slave_config.slave_id = sunxi_slave_id(DRQDST_SDRAM, DRQSRC_DAUDIO_1_RX);
	}
	ret = dmaengine_slave_config(chan, &slave_config);
	if (ret < 0) {
		dev_err(dev, "dma slave config failed with err %d\n", ret);
		return ret;
	}

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
	return 0;
}

开发者ID:GREYFOXRGR，项目名称:BPI-M3-bsp，代码行数:46，代码来源:sunxi-daudiodma1.c

示例11: printk

/* Release all dynamiclly allocated resources.
*/
static int i2sirx_i2so_mix_hw_free
(
    struct snd_pcm_substream *substream
)
{
    struct i2sirx_i2so_mix_info *mix;
    
    printk("%s,%d\n", __FUNCTION__, __LINE__);

    mix = substream->runtime->private_data;
    
    snd_pcm_set_runtime_buffer(substream, NULL);

    //printk("%s,%d\n", __FUNCTION__, __LINE__);

    return(0);
}

开发者ID:qttest1，项目名称:PDK_GoBian，代码行数:19，代码来源:ali_alsa_i2sirx_i2so_mix.c

示例12: ux500_pcm_dma_hw_free

static void ux500_pcm_dma_hw_free(struct device *dev,
				struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_dma_buffer *buf = runtime->dma_buffer_p;

	if (runtime->dma_area == NULL)
		return;

	if (buf != &substream->dma_buffer) {
		dma_free_coherent(buf->dev.dev, buf->bytes, buf->area,
				buf->addr);
		kfree(runtime->dma_buffer_p);
	}

	snd_pcm_set_runtime_buffer(substream, NULL);
}

开发者ID:ARMWorks，项目名称:FA_2451_Linux_Kernel，代码行数:17，代码来源:ux500_pcm.c

示例13: tegra_pcm_hw_params

int tegra_pcm_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct device *dev = rtd->platform->dev;
	struct dma_chan *chan;
	struct tegra_pcm_dma_params *dmap;
	struct dma_slave_config slave_config;
	int ret;

	if (rtd->dai_link->no_pcm)
		return 0;

	chan = snd_dmaengine_pcm_get_chan(substream);
	dmap = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);
	if (!dmap)
		return 0;

	ret = snd_hwparams_to_dma_slave_config(substream, params,
						&slave_config);
	if (ret) {
		dev_err(dev, "hw params config failed with err %d\n", ret);
		return ret;
	}

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		slave_config.dst_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
		slave_config.dst_addr = dmap->addr;
		slave_config.dst_maxburst = 4;
	} else {
		slave_config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
		slave_config.src_addr = dmap->addr;
		slave_config.src_maxburst = 4;
	}
	slave_config.slave_id = dmap->req_sel;

	ret = dmaengine_slave_config(chan, &slave_config);
	if (ret < 0) {
		dev_err(dev, "dma slave config failed with err %d\n", ret);
		return ret;
	}

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
	return 0;
}

开发者ID:FrozenCow，项目名称:FIRE-ICE，代码行数:45，代码来源:tegra_pcm.c

示例14: lpc3xxx_pcm_hw_params

/*
 * PCM operations
 */
static int lpc3xxx_pcm_hw_params(struct snd_pcm_substream *substream,
			         struct snd_pcm_hw_params *params)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct lpc3xxx_dma_data *prtd = runtime->private_data;

	/* this may get called several times by oss emulation
	 * with different params
	 */
	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
	runtime->dma_bytes = params_buffer_bytes(params);

	prtd->dma_buffer = runtime->dma_addr;
	prtd->dma_buffer_end = runtime->dma_addr + runtime->dma_bytes;
	prtd->period_size = params_period_bytes(params);

	return 0;
}

开发者ID:AdrianHuang，项目名称:uclinux-robutest，代码行数:21，代码来源:lpc3xxx-pcm.c

示例15: bcm947xx_pcm_hw_free

static int bcm947xx_pcm_hw_free(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	bcm947xx_i2s_info_t *snd_bcm = rtd->dai->cpu_dai->private_data;

	DBG("%s %s\n", __FUNCTION__, bcm947xx_direction_str(substream));

	snd_pcm_set_runtime_buffer(substream, NULL);

	/* This stream is no longer consider in-use. */
	snd_bcm->in_use &= ~(1 << substream->stream);

	if (!snd_bcm->in_use)
	{	/* All streams are not used. */
		bcm947xx_pcm_clear_joint_duplex_settings(snd_bcm);
	}

	return 0;
}

开发者ID:Antares84，项目名称:asuswrt-merlin，代码行数:19，代码来源:bcm947xx-pcm.c

示例16: mt76xx_pcm_free_dma_buffer

static int mt76xx_pcm_free_dma_buffer(struct snd_pcm_substream *substream,
                                      int stream)
{

    //struct snd_pcm_substream *substream = pcm->streams[stream].substream;
    struct snd_dma_buffer *buf = &substream->dma_buffer;
    i2s_config_type* rtd = (i2s_config_type*)substream->runtime->private_data;

    //printk("******* %s *******\n", __func__);
    if (!buf->area)
        return 0;
    if(substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
        i2s_memPool_free(rtd,STREAM_PLAYBACK);
    else
        i2s_memPool_free(rtd,STREAM_CAPTURE);
    buf->area = NULL;
    snd_pcm_set_runtime_buffer(substream, NULL);
    return 0;
}

开发者ID:openspeaker，项目名称:os-wrt-cc，代码行数:19，代码来源:mt76xx_pcm.c

示例17: hi3630_pcm_hdmi_hw_free

static int hi3630_pcm_hdmi_hw_free(struct snd_pcm_substream *substream)
{
	struct hi3630_hdmi_runtime_data *prtd = substream->runtime->private_data;
	struct hi3630_hdmi_data *pdata = prtd->pdata;
	int ret = 0;

	if (SNDRV_PCM_STREAM_PLAYBACK == substream->stream) {
		wait_hdmi_dma_stop(prtd);

		/*clear interrupt*/
		hi3630_hdmi_reg_write(pdata, HI3630_ASP_INT_CLR, HDMI_INT_MASK);

		ret = snd_pcm_lib_free_pages(substream);
	}

	snd_pcm_set_runtime_buffer(substream, NULL);

	return ret;
}

开发者ID:magnusjjj，项目名称:android_kernel_huawei_rle，代码行数:19，代码来源:hi3630_pcm_hdmi.c

示例18: dma_hw_params

static int dma_hw_params(struct snd_pcm_substream *substream,
		struct snd_pcm_hw_params *params)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct nusmart_runtime_data *prtd = runtime->private_data;
	//struct nusmart_pcm_dma_data *dma_data = rtd->cpu_dai->dma_data;
	struct nusmart_pcm_dma_data *dma_data;

	dma_data = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream);


	/* return if this is a bufferless transfer e.g.
	 * codec <--> BT codec or GSM modem -- lg FIXME */
	if (!dma_data)
		return 0;


	switch(params_format(params)) {

		case SNDRV_PCM_FORMAT_S8:
			dma_data->i2s_width = 0;
			break;
		case SNDRV_PCM_FORMAT_S16_LE:
			dma_data->i2s_width = 1;
			break;
		case SNDRV_PCM_FORMAT_S24_LE:
			dma_data->i2s_width = 2;
			break;
	}

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
	runtime->dma_bytes = params_buffer_bytes(params);

	if (prtd->dma_data)
		return 0;
	prtd->dma_data = dma_data;

	return 0;

}

开发者ID:alessandroste，项目名称:testBSP，代码行数:41，代码来源:dma.c

示例19: snd_pcm_lib_malloc_pages

/**
 * snd_pcm_lib_malloc_pages - allocate the DMA buffer
 * @substream: the substream to allocate the DMA buffer to
 * @size: the requested buffer size in bytes
 *
 * Allocates the DMA buffer on the BUS type given earlier to
 * snd_pcm_lib_preallocate_xxx_pages().
 *
 * Return: 1 if the buffer is changed, 0 if not changed, or a negative
 * code on failure.
 */
int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size)
{
	struct snd_pcm_runtime *runtime;
	struct snd_dma_buffer *dmab = NULL;

	if (PCM_RUNTIME_CHECK(substream))
		return -EINVAL;
	if (snd_BUG_ON(substream->dma_buffer.dev.type ==
		       SNDRV_DMA_TYPE_UNKNOWN))
		return -EINVAL;
	runtime = substream->runtime;

	if (runtime->dma_buffer_p) {
		/* perphaps, we might free the large DMA memory region
		   to save some space here, but the actual solution
		   costs us less time */
		if (runtime->dma_buffer_p->bytes >= size) {
			runtime->dma_bytes = size;
			return 0;	/* ok, do not change */
		}
		snd_pcm_lib_free_pages(substream);
	}
	if (substream->dma_buffer.area != NULL &&
	    substream->dma_buffer.bytes >= size) {
		dmab = &substream->dma_buffer; /* use the pre-allocated buffer */
	} else {
		dmab = kzalloc(sizeof(*dmab), GFP_KERNEL);
		if (! dmab)
			return -ENOMEM;
		dmab->dev = substream->dma_buffer.dev;
		if (snd_dma_alloc_pages(substream->dma_buffer.dev.type,
					substream->dma_buffer.dev.dev,
					size, dmab) < 0) {
			kfree(dmab);
			return -ENOMEM;
		}
	}
	snd_pcm_set_runtime_buffer(substream, dmab);
	runtime->dma_bytes = size;
	return 1;			/* area was changed */
}

开发者ID:AlexShiLucky，项目名称:linux，代码行数:52，代码来源:pcm_memory.c

示例20: msm_afe_hw_params

static int msm_afe_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_dma_buffer *dma_buf = &substream->dma_buffer;
	struct pcm_afe_info *prtd = runtime->private_data;
	int rc;

	pr_debug("%s:\n", __func__);

	mutex_lock(&prtd->lock);

	dma_buf->dev.type = SNDRV_DMA_TYPE_DEV;
	dma_buf->dev.dev = substream->pcm->card->dev;
	dma_buf->private_data = NULL;
	dma_buf->area = dma_alloc_coherent(dma_buf->dev.dev,
				runtime->hw.buffer_bytes_max,
				&dma_buf->addr, GFP_KERNEL);

	pr_debug("%s: dma_buf->area: 0x%p, dma_buf->addr: 0x%x", __func__,
			(unsigned int *) dma_buf->area, dma_buf->addr);
	if (!dma_buf->area) {
		pr_err("%s:MSM AFE memory allocation failed\n", __func__);
		mutex_unlock(&prtd->lock);
		return -ENOMEM;
	}
	dma_buf->bytes = runtime->hw.buffer_bytes_max;
	memset(dma_buf->area, 0, runtime->hw.buffer_bytes_max);
	prtd->dma_addr = (u32) dma_buf->addr;

	mutex_unlock(&prtd->lock);

	snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);

	rc = afe_cmd_memory_map(dma_buf->addr, dma_buf->bytes);
	if (rc < 0)
		pr_err("fail to map memory to DSP\n");

	return rc;
}

开发者ID:F4uzan，项目名称:skernel_u0，代码行数:40，代码来源:msm-pcm-afe-v2.c

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