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Use FORWARD ioctl

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This commit is contained in:
Jaroslav Kysela 2003-02-23 19:48:08 +00:00
parent 7b09000813
commit 0c72d7555a
1 changed files with 33 additions and 29 deletions
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62
src/pcm/pcm_hw.c
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@ -79,6 +79,7 @@ struct sndrv_pcm_hw_params_old {
#define SND_PCM_IOCTL_HWSYNC _IO ('A', 0x22)
#define SND_PCM_IOCTL_XRUN _IO ('A', 0x48)
#define SND_PCM_IOCTL_FORWARD _IOW('A', 0x49, sndrv_pcm_uframes_t)
static int use_old_hw_params_ioctl(int fd, unsigned int cmd, snd_pcm_hw_params_t *params);
static snd_pcm_sframes_t snd_pcm_hw_avail_update(snd_pcm_t *pcm);
@ -103,7 +104,7 @@ typedef struct {
#define SNDRV_FILE_PCM_STREAM_PLAYBACK "/dev/snd/pcmC%iD%ip"
#define SNDRV_FILE_PCM_STREAM_CAPTURE "/dev/snd/pcmC%iD%ic"
#define SNDRV_PCM_VERSION_MAX SNDRV_PROTOCOL_VERSION(2, 0, 3)
#define SNDRV_PCM_VERSION_MAX SNDRV_PROTOCOL_VERSION(2, 0, 4)
/* update appl_ptr with driver */
#define UPDATE_SHADOW_PTR(hw) \
@ -453,12 +454,11 @@ static int snd_pcm_hw_reset(snd_pcm_t *pcm)
static int snd_pcm_hw_start(snd_pcm_t *pcm)
{
snd_pcm_hw_t *hw = pcm->private_data;
int fd = hw->fd;
#if 0
assert(pcm->stream != SND_PCM_STREAM_PLAYBACK ||
snd_pcm_mmap_playback_hw_avail(pcm) > 0);
#endif
if (ioctl(fd, SNDRV_PCM_IOCTL_START) < 0) {
if (ioctl(hw->fd, SNDRV_PCM_IOCTL_START) < 0) {
SYSERR("SNDRV_PCM_IOCTL_START failed");
#if 0
if (errno == EBADFD)
@ -472,8 +472,7 @@ static int snd_pcm_hw_start(snd_pcm_t *pcm)
static int snd_pcm_hw_drop(snd_pcm_t *pcm)
{
snd_pcm_hw_t *hw = pcm->private_data;
int fd = hw->fd;
if (ioctl(fd, SNDRV_PCM_IOCTL_DROP) < 0) {
if (ioctl(hw->fd, SNDRV_PCM_IOCTL_DROP) < 0) {
SYSERR("SNDRV_PCM_IOCTL_DROP failed");
return -errno;
}
@ -483,8 +482,7 @@ static int snd_pcm_hw_drop(snd_pcm_t *pcm)
static int snd_pcm_hw_drain(snd_pcm_t *pcm)
{
snd_pcm_hw_t *hw = pcm->private_data;
int fd = hw->fd;
if (ioctl(fd, SNDRV_PCM_IOCTL_DRAIN) < 0) {
if (ioctl(hw->fd, SNDRV_PCM_IOCTL_DRAIN) < 0) {
if (errno != EAGAIN)
SYSERR("SNDRV_PCM_IOCTL_DRAIN failed");
return -errno;
@ -495,8 +493,7 @@ static int snd_pcm_hw_drain(snd_pcm_t *pcm)
static int snd_pcm_hw_pause(snd_pcm_t *pcm, int enable)
{
snd_pcm_hw_t *hw = pcm->private_data;
int fd = hw->fd;
if (ioctl(fd, SNDRV_PCM_IOCTL_PAUSE, enable) < 0) {
if (ioctl(hw->fd, SNDRV_PCM_IOCTL_PAUSE, enable) < 0) {
SYSERR("SNDRV_PCM_IOCTL_PAUSE failed");
return -errno;
}
@ -506,8 +503,7 @@ static int snd_pcm_hw_pause(snd_pcm_t *pcm, int enable)
static snd_pcm_sframes_t snd_pcm_hw_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t frames)
{
snd_pcm_hw_t *hw = pcm->private_data;
int fd = hw->fd;
if (ioctl(fd, SNDRV_PCM_IOCTL_REWIND, &frames) < 0) {
if (ioctl(hw->fd, SNDRV_PCM_IOCTL_REWIND, &frames) < 0) {
SYSERR("SNDRV_PCM_IOCTL_REWIND failed");
return -errno;
}
@ -517,26 +513,34 @@ static snd_pcm_sframes_t snd_pcm_hw_rewind(snd_pcm_t *pcm, snd_pcm_uframes_t fra
static snd_pcm_sframes_t snd_pcm_hw_forward(snd_pcm_t *pcm, snd_pcm_uframes_t frames)
{
snd_pcm_hw_t *hw = pcm->private_data;
snd_pcm_sframes_t avail;
if (SNDRV_PROTOCOL_VERSION(2, 0, 4) <= hw->version) {
if (ioctl(hw->fd, SND_PCM_IOCTL_FORWARD, &frames) < 0) {
SYSERR("SNDRV_PCM_IOCTL_FORWARD failed");
return -errno;
}
return frames;
} else {
snd_pcm_sframes_t avail;
switch (FAST_PCM_STATE(hw)) {
case SNDRV_PCM_STATE_RUNNING:
case SNDRV_PCM_STATE_DRAINING:
case SNDRV_PCM_STATE_PAUSED:
case SNDRV_PCM_STATE_PREPARED:
break;
case SNDRV_PCM_STATE_XRUN:
return -EPIPE;
default:
return -EBADFD;
switch (FAST_PCM_STATE(hw)) {
case SNDRV_PCM_STATE_RUNNING:
case SNDRV_PCM_STATE_DRAINING:
case SNDRV_PCM_STATE_PAUSED:
case SNDRV_PCM_STATE_PREPARED:
break;
case SNDRV_PCM_STATE_XRUN:
return -EPIPE;
default:
return -EBADFD;
}
avail = snd_pcm_mmap_avail(pcm);
if (avail < 0)
return 0;
if (frames > (snd_pcm_uframes_t)avail)
frames = avail;
snd_pcm_mmap_appl_forward(pcm, frames);
return frames;
}
avail = snd_pcm_mmap_avail(pcm);
if (avail < 0)
return 0;
if (frames > (snd_pcm_uframes_t)avail)
frames = avail;
snd_pcm_mmap_appl_forward(pcm, frames);
return frames;
}
static int snd_pcm_hw_resume(snd_pcm_t *pcm)