Commit bdc4acf7 authored by Takashi Iwai's avatar Takashi Iwai
Browse files

ALSA: pcm: Shuffle codes 



Just shuffle the codes, without any change otherwise.

Reviewed-by: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 6ba63929

sound/core/pcm_lib.c

+106 −106
Original line number Diff line number Diff line
@@ -1993,6 +1993,10 @@ static int wait_for_avail(struct snd_pcm_substream *substream, 
	return err;

}

	

typedef int (*transfer_f)(struct snd_pcm_substream *substream, unsigned int hwoff,

			  unsigned long data, unsigned int off,

			  snd_pcm_uframes_t size);



static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream,

				      unsigned int hwoff,

				      unsigned long data, unsigned int off,
@@ -2015,9 +2019,68 @@ static int snd_pcm_lib_write_transfer(struct snd_pcm_substream *substream, 
	return 0;

}

 

typedef int (*transfer_f)(struct snd_pcm_substream *substream, unsigned int hwoff,

static int snd_pcm_lib_writev_transfer(struct snd_pcm_substream *substream,

				       unsigned int hwoff,

				       unsigned long data, unsigned int off,

			  snd_pcm_uframes_t size);

				       snd_pcm_uframes_t frames)

{

	struct snd_pcm_runtime *runtime = substream->runtime;

	int err;

	void __user **bufs = (void __user **)data;

	int channels = runtime->channels;

	char __user *buf;

	int c;



	if (substream->ops->copy_user) {

		hwoff = samples_to_bytes(runtime, hwoff);

		off = samples_to_bytes(runtime, off);

		frames = samples_to_bytes(runtime, frames);

		for (c = 0; c < channels; ++c, ++bufs) {

			buf = *bufs + off;

			if (!*bufs) {

				if (snd_BUG_ON(!substream->ops->fill_silence))

					return -EINVAL;

				err = substream->ops->fill_silence(substream, c,

								   hwoff,

								   frames);

			} else {

				err = substream->ops->copy_user(substream, c,

								hwoff, buf,

								frames);

			}

			if (err < 0)

				return err;

		}

	} else {

		/* default transfer behaviour */

		size_t dma_csize = runtime->dma_bytes / channels;

		for (c = 0; c < channels; ++c, ++bufs) {

			char *hwbuf = runtime->dma_area + (c * dma_csize) + samples_to_bytes(runtime, hwoff);

			if (*bufs == NULL) {

				snd_pcm_format_set_silence(runtime->format, hwbuf, frames);

			} else {

				char __user *buf = *bufs + samples_to_bytes(runtime, off);

				if (copy_from_user(hwbuf, buf, samples_to_bytes(runtime, frames)))

					return -EFAULT;

			}

		}

	}

	return 0;

}



/* sanity-check for read/write methods */

static int pcm_sanity_check(struct snd_pcm_substream *substream)

{

	struct snd_pcm_runtime *runtime;

	if (PCM_RUNTIME_CHECK(substream))

		return -ENXIO;

	runtime = substream->runtime;

	if (snd_BUG_ON(!substream->ops->copy_user && !runtime->dma_area))

		return -EINVAL;

	if (runtime->status->state == SNDRV_PCM_STATE_OPEN)

		return -EBADFD;

	return 0;

}



static int pcm_accessible_state(struct snd_pcm_runtime *runtime)

{
@@ -2118,20 +2181,6 @@ static snd_pcm_sframes_t snd_pcm_lib_write1(struct snd_pcm_substream *substream, 
	return xfer > 0 ? (snd_pcm_sframes_t)xfer : err;

}



/* sanity-check for read/write methods */

static int pcm_sanity_check(struct snd_pcm_substream *substream)

{

	struct snd_pcm_runtime *runtime;

	if (PCM_RUNTIME_CHECK(substream))

		return -ENXIO;

	runtime = substream->runtime;

	if (snd_BUG_ON(!substream->ops->copy_user && !runtime->dma_area))

		return -EINVAL;

	if (runtime->status->state == SNDRV_PCM_STATE_OPEN)

		return -EBADFD;

	return 0;

}



snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, const void __user *buf, snd_pcm_uframes_t size)

{

	struct snd_pcm_runtime *runtime;
@@ -2153,55 +2202,6 @@ snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, const v 


EXPORT_SYMBOL(snd_pcm_lib_write);



static int snd_pcm_lib_writev_transfer(struct snd_pcm_substream *substream,

				       unsigned int hwoff,

				       unsigned long data, unsigned int off,

				       snd_pcm_uframes_t frames)

{

	struct snd_pcm_runtime *runtime = substream->runtime;

	int err;

	void __user **bufs = (void __user **)data;

	int channels = runtime->channels;

	char __user *buf;

	int c;



	if (substream->ops->copy_user) {

		hwoff = samples_to_bytes(runtime, hwoff);

		off = samples_to_bytes(runtime, off);

		frames = samples_to_bytes(runtime, frames);

		for (c = 0; c < channels; ++c, ++bufs) {

			buf = *bufs + off;

			if (!*bufs) {

				if (snd_BUG_ON(!substream->ops->fill_silence))

					return -EINVAL;

				err = substream->ops->fill_silence(substream, c,

								   hwoff,

								   frames);

			} else {

				err = substream->ops->copy_user(substream, c,

								hwoff, buf,

								frames);

			}

			if (err < 0)

				return err;

		}

	} else {

		/* default transfer behaviour */

		size_t dma_csize = runtime->dma_bytes / channels;

		for (c = 0; c < channels; ++c, ++bufs) {

			char *hwbuf = runtime->dma_area + (c * dma_csize) + samples_to_bytes(runtime, hwoff);

			if (*bufs == NULL) {

				snd_pcm_format_set_silence(runtime->format, hwbuf, frames);

			} else {

				char __user *buf = *bufs + samples_to_bytes(runtime, off);

				if (copy_from_user(hwbuf, buf, samples_to_bytes(runtime, frames)))

					return -EFAULT;

			}

		}

	}

	return 0;

}

 

snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream,

				     void __user **bufs,

				     snd_pcm_uframes_t frames)
@@ -2246,6 +2246,46 @@ static int snd_pcm_lib_read_transfer(struct snd_pcm_substream *substream, 
	return 0;

}



static int snd_pcm_lib_readv_transfer(struct snd_pcm_substream *substream,

				      unsigned int hwoff,

				      unsigned long data, unsigned int off,

				      snd_pcm_uframes_t frames)

{

	struct snd_pcm_runtime *runtime = substream->runtime;

	int err;

	void __user **bufs = (void __user **)data;

	int channels = runtime->channels;

	char __user *buf;

	char *hwbuf;

	int c;



	if (substream->ops->copy_user) {

		hwoff = samples_to_bytes(runtime, hwoff);

		off = samples_to_bytes(runtime, off);

		frames = samples_to_bytes(runtime, frames);

		for (c = 0; c < channels; ++c, ++bufs) {

			if (!*bufs)

				continue;

			err = substream->ops->copy_user(substream, c, hwoff,

							*bufs + off, frames);

			if (err < 0)

				return err;

		}

	} else {

		snd_pcm_uframes_t dma_csize = runtime->dma_bytes / channels;

		for (c = 0; c < channels; ++c, ++bufs) {

			if (*bufs == NULL)

				continue;



			hwbuf = runtime->dma_area + (c * dma_csize) + samples_to_bytes(runtime, hwoff);

			buf = *bufs + samples_to_bytes(runtime, off);

			if (copy_to_user(buf, hwbuf, samples_to_bytes(runtime, frames)))

				return -EFAULT;

		}

	}

	return 0;

}



static snd_pcm_sframes_t snd_pcm_lib_read1(struct snd_pcm_substream *substream,

					   unsigned long data,

					   snd_pcm_uframes_t size,
@@ -2354,46 +2394,6 @@ snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, void __u 


EXPORT_SYMBOL(snd_pcm_lib_read);



static int snd_pcm_lib_readv_transfer(struct snd_pcm_substream *substream,

				      unsigned int hwoff,

				      unsigned long data, unsigned int off,

				      snd_pcm_uframes_t frames)

{

	struct snd_pcm_runtime *runtime = substream->runtime;

	int err;

	void __user **bufs = (void __user **)data;

	int channels = runtime->channels;

	char __user *buf;

	char *hwbuf;

	int c;



	if (substream->ops->copy_user) {

		hwoff = samples_to_bytes(runtime, hwoff);

		off = samples_to_bytes(runtime, off);

		frames = samples_to_bytes(runtime, frames);

		for (c = 0; c < channels; ++c, ++bufs) {

			if (!*bufs)

				continue;

			err = substream->ops->copy_user(substream, c, hwoff,

							*bufs + off, frames);

			if (err < 0)

				return err;

		}

	} else {

		snd_pcm_uframes_t dma_csize = runtime->dma_bytes / channels;

		for (c = 0; c < channels; ++c, ++bufs) {

			if (*bufs == NULL)

				continue;



			hwbuf = runtime->dma_area + (c * dma_csize) + samples_to_bytes(runtime, hwoff);

			buf = *bufs + samples_to_bytes(runtime, off);

			if (copy_to_user(buf, hwbuf, samples_to_bytes(runtime, frames)))

				return -EFAULT;

		}

	}

	return 0;

}

 

snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream,

				    void __user **bufs,

				    snd_pcm_uframes_t frames)