mirror of
https://github.com/alsa-project/alsa-lib.git
synced 2025-11-03 09:01:52 -05:00
Fixed pointers use
This commit is contained in:
Abramo Bagnara
parent
e39bf6e72e
commit
a380edd64f
7 changed files with 161 additions and 158 deletions
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@ -40,9 +40,7 @@
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typedef struct {
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int socket;
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void *ctrl;
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size_t hw_ptr;
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size_t appl_ptr;
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volatile snd_pcm_shm_ctrl_t *ctrl;
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snd_pcm_mmap_info_t *slave_mmap_info;
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} snd_pcm_shm_t;
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@ -85,7 +83,7 @@ static int snd_pcm_shm_action(snd_pcm_t *pcm)
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snd_pcm_shm_t *shm = pcm->private;
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int err;
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char buf[1];
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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err = write(shm->socket, buf, 1);
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if (err != 1)
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return -EBADFD;
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@ -104,7 +102,7 @@ static int snd_pcm_shm_action_fd(snd_pcm_t *pcm, int *fd)
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snd_pcm_shm_t *shm = pcm->private;
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int err;
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char buf[1];
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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err = write(shm->socket, buf, 1);
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if (err != 1)
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return -EBADFD;
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@ -118,36 +116,6 @@ static int snd_pcm_shm_action_fd(snd_pcm_t *pcm, int *fd)
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return ctrl->result;
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}
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static int snd_pcm_shm_drain(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_DRAIN;
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err = snd_pcm_shm_action(pcm);
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if (err < 0)
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return err;
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if (!(pcm->mode & SND_PCM_NONBLOCK))
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snd_pcm_wait(pcm, -1);
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return err;
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}
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static int snd_pcm_shm_close(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int result;
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if (!(pcm->mode & SND_PCM_NONBLOCK))
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snd_pcm_shm_drain(pcm);
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ctrl->cmd = SND_PCM_IOCTL_CLOSE;
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result = snd_pcm_shm_action(pcm);
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shmdt((void *)ctrl);
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close(shm->socket);
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close(pcm->poll_fd);
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free(shm);
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return result;
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}
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static int snd_pcm_shm_nonblock(snd_pcm_t *pcm ATTRIBUTE_UNUSED, int nonblock ATTRIBUTE_UNUSED)
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{
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return 0;
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@ -156,7 +124,7 @@ static int snd_pcm_shm_nonblock(snd_pcm_t *pcm ATTRIBUTE_UNUSED, int nonblock AT
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static int snd_pcm_shm_async(snd_pcm_t *pcm, int sig, pid_t pid)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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ctrl->cmd = SND_PCM_IOCTL_ASYNC;
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ctrl->u.async.sig = sig;
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if (pid == 0)
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@ -168,7 +136,7 @@ static int snd_pcm_shm_async(snd_pcm_t *pcm, int sig, pid_t pid)
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static int snd_pcm_shm_info(snd_pcm_t *pcm, snd_pcm_info_t * info)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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// ctrl->u.info = *info;
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ctrl->cmd = SND_PCM_IOCTL_INFO;
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@ -182,7 +150,7 @@ static int snd_pcm_shm_info(snd_pcm_t *pcm, snd_pcm_info_t * info)
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static int snd_pcm_shm_params_info(snd_pcm_t *pcm, snd_pcm_params_info_t * info)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_PARAMS_INFO;
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ctrl->u.params_info = *info;
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@ -196,7 +164,7 @@ static int snd_pcm_shm_params_info(snd_pcm_t *pcm, snd_pcm_params_info_t * info)
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static int snd_pcm_shm_params(snd_pcm_t *pcm, snd_pcm_params_t * params)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_PARAMS;
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ctrl->u.params = *params;
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@ -210,7 +178,7 @@ static int snd_pcm_shm_params(snd_pcm_t *pcm, snd_pcm_params_t * params)
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static int snd_pcm_shm_setup(snd_pcm_t *pcm, snd_pcm_setup_t * setup)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_SETUP;
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// ctrl->u.setup = *setup;
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@ -224,7 +192,7 @@ static int snd_pcm_shm_setup(snd_pcm_t *pcm, snd_pcm_setup_t * setup)
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static int snd_pcm_shm_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t * info)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_CHANNEL_INFO;
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ctrl->u.channel_info = *info;
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@ -238,7 +206,7 @@ static int snd_pcm_shm_channel_info(snd_pcm_t *pcm, snd_pcm_channel_info_t * inf
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static int snd_pcm_shm_channel_params(snd_pcm_t *pcm, snd_pcm_channel_params_t * params)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_CHANNEL_PARAMS;
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ctrl->u.channel_params = *params;
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@ -270,7 +238,7 @@ static void *convert_addr(void *addr, size_t count, snd_pcm_mmap_info_t *old, sn
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static int snd_pcm_shm_channel_setup(snd_pcm_t *pcm, snd_pcm_channel_setup_t * setup)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_CHANNEL_SETUP;
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ctrl->u.channel_setup = *setup;
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@ -288,7 +256,7 @@ static int snd_pcm_shm_channel_setup(snd_pcm_t *pcm, snd_pcm_channel_setup_t * s
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static int snd_pcm_shm_status(snd_pcm_t *pcm, snd_pcm_status_t * status)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_STATUS;
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// ctrl->u.status = *status;
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@ -302,7 +270,7 @@ static int snd_pcm_shm_status(snd_pcm_t *pcm, snd_pcm_status_t * status)
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static int snd_pcm_shm_state(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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ctrl->cmd = SND_PCM_IOCTL_STATE;
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return snd_pcm_shm_action(pcm);
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}
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@ -310,37 +278,32 @@ static int snd_pcm_shm_state(snd_pcm_t *pcm)
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static int snd_pcm_shm_delay(snd_pcm_t *pcm, ssize_t *delayp)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_DELAY;
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err = snd_pcm_shm_action(pcm);
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if (err < 0)
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return err;
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*delayp = ctrl->u.delay;
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*delayp = ctrl->u.delay.frames;
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return err;
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}
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static ssize_t snd_pcm_shm_avail_update(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_AVAIL_UPDATE;
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err = snd_pcm_shm_action(pcm);
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if (err < 0)
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return err;
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shm->hw_ptr = shm->appl_ptr;
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if (pcm->stream == SND_PCM_STREAM_PLAYBACK)
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snd_pcm_mmap_hw_backward(pcm, err);
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else
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snd_pcm_mmap_hw_forward(pcm, err);
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return err;
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}
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static int snd_pcm_shm_prepare(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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ctrl->cmd = SND_PCM_IOCTL_PREPARE;
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return snd_pcm_shm_action(pcm);
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}
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@ -348,7 +311,7 @@ static int snd_pcm_shm_prepare(snd_pcm_t *pcm)
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static int snd_pcm_shm_start(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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ctrl->cmd = SND_PCM_IOCTL_START;
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return snd_pcm_shm_action(pcm);
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}
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@ -356,37 +319,47 @@ static int snd_pcm_shm_start(snd_pcm_t *pcm)
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static int snd_pcm_shm_drop(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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ctrl->cmd = SND_PCM_IOCTL_DROP;
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return snd_pcm_shm_action(pcm);
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}
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static int snd_pcm_shm_drain(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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ctrl->cmd = SND_PCM_IOCTL_DRAIN;
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err = snd_pcm_shm_action(pcm);
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if (err < 0)
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return err;
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if (!(pcm->mode & SND_PCM_NONBLOCK))
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snd_pcm_wait(pcm, -1);
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return err;
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}
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static int snd_pcm_shm_pause(snd_pcm_t *pcm, int enable)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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ctrl->cmd = SND_PCM_IOCTL_PAUSE;
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ctrl->u.pause = enable;
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ctrl->u.pause.enable = enable;
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return snd_pcm_shm_action(pcm);
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}
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static ssize_t snd_pcm_shm_rewind(snd_pcm_t *pcm, size_t frames)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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ctrl->cmd = SND_PCM_IOCTL_REWIND;
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ctrl->u.rewind = frames;
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err = snd_pcm_shm_action(pcm);
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if (err >= 0)
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snd_pcm_mmap_appl_backward(pcm, err);
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return err;
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ctrl->u.rewind.frames = frames;
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return snd_pcm_shm_action(pcm);
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}
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static int snd_pcm_shm_mmap(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int count, k, err, fd;
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ctrl->cmd = SND_PCM_IOCTL_MMAP;
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count = snd_pcm_shm_action(pcm);
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@ -432,7 +405,7 @@ static int snd_pcm_shm_mmap(snd_pcm_t *pcm)
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static int snd_pcm_shm_munmap(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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unsigned int k;
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ctrl->cmd = SND_PCM_IOCTL_MUNMAP;
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@ -464,20 +437,16 @@ static int snd_pcm_shm_munmap(snd_pcm_t *pcm)
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static ssize_t snd_pcm_shm_mmap_forward(snd_pcm_t *pcm, size_t size)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int err;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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ctrl->cmd = SND_PCM_IOCTL_MMAP_FORWARD;
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ctrl->u.mmap_forward = size;
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err = snd_pcm_shm_action(pcm);
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if (err >= 0)
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snd_pcm_mmap_appl_forward(pcm, err);
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return err;
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ctrl->u.mmap_forward.frames = size;
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return snd_pcm_shm_action(pcm);
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}
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static int snd_pcm_shm_poll_descriptor(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int fd, err;
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ctrl->cmd = SND_PCM_IOCTL_POLL_DESCRIPTOR;
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err = snd_pcm_shm_action_fd(pcm, &fd);
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@ -492,6 +461,23 @@ static int snd_pcm_shm_channels_mask(snd_pcm_t *pcm ATTRIBUTE_UNUSED,
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return 0;
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}
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static int snd_pcm_shm_close(snd_pcm_t *pcm)
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{
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snd_pcm_shm_t *shm = pcm->private;
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volatile snd_pcm_shm_ctrl_t *ctrl = shm->ctrl;
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int result;
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if (!(pcm->mode & SND_PCM_NONBLOCK) &&
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snd_pcm_shm_state(pcm) == SND_PCM_STATE_RUNNING)
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snd_pcm_shm_drain(pcm);
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ctrl->cmd = SND_PCM_IOCTL_CLOSE;
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result = snd_pcm_shm_action(pcm);
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shmdt((void *)ctrl);
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close(shm->socket);
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close(pcm->poll_fd);
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free(shm);
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return result;
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}
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static void snd_pcm_shm_dump(snd_pcm_t *pcm, FILE *fp)
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{
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fprintf(fp, "Shm PCM\n");
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@ -680,8 +666,8 @@ int snd_pcm_shm_open(snd_pcm_t **pcmp, char *name, char *socket, char *sname, in
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return err;
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}
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pcm->poll_fd = err;
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pcm->hw_ptr = &shm->hw_ptr;
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pcm->appl_ptr = &shm->appl_ptr;
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pcm->hw_ptr = &ctrl->hw_ptr;
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pcm->appl_ptr = &ctrl->appl_ptr;
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*pcmp = pcm;
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return 0;
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