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-rw-r--r--drivers/staging/line6/midibuf.c106
1 files changed, 51 insertions, 55 deletions
diff --git a/drivers/staging/line6/midibuf.c b/drivers/staging/line6/midibuf.c
index 5726bb148a5a..ab0a5f30fbca 100644
--- a/drivers/staging/line6/midibuf.c
+++ b/drivers/staging/line6/midibuf.c
@@ -18,18 +18,19 @@
static int midibuf_message_length(unsigned char code)
{
- if(code < 0x80)
+ if (code < 0x80)
return -1;
- else if(code < 0xf0) {
+ else if (code < 0xf0) {
static const int length[] = { 3, 3, 3, 3, 2, 2, 3 };
return length[(code >> 4) - 8];
- }
- else {
+ } else {
/*
- Note that according to the MIDI specification 0xf2 is the "Song Position
- Pointer", but this is used by Line6 to send sysex messages to the host.
+ Note that according to the MIDI specification 0xf2 is
+ the "Song Position Pointer", but this is used by Line6
+ to send sysex messages to the host.
*/
- static const int length[] = { -1, 2, -1, 2, -1, -1, 1, 1, 1, 1, 1, 1, 1, -1, 1, 1 };
+ static const int length[] = { -1, 2, -1, 2, -1, -1, 1, 1, 1, 1,
+ 1, 1, 1, -1, 1, 1 };
return length[code & 0x0f];
}
}
@@ -42,7 +43,7 @@ void midibuf_reset(struct MidiBuffer *this)
int midibuf_init(struct MidiBuffer *this, int size, int split)
{
- this->buf = (unsigned char *)kmalloc(size, GFP_KERNEL);
+ this->buf = kmalloc(size, GFP_KERNEL);
if (this->buf == NULL)
return -ENOMEM;
@@ -55,8 +56,9 @@ int midibuf_init(struct MidiBuffer *this, int size, int split)
void midibuf_status(struct MidiBuffer *this)
{
- printk("midibuf size=%d split=%d pos_read=%d pos_write=%d full=%d command_prev=%02x\n",
- this->size, this->split, this->pos_read, this->pos_write, this->full, this->command_prev);
+ printk(KERN_DEBUG "midibuf size=%d split=%d pos_read=%d pos_write=%d "
+ "full=%d command_prev=%02x\n", this->size, this->split,
+ this->pos_read, this->pos_write, this->full, this->command_prev);
}
static int midibuf_is_empty(struct MidiBuffer *this)
@@ -91,29 +93,28 @@ int midibuf_write(struct MidiBuffer *this, unsigned char *data, int length)
int length1, length2;
int skip_active_sense = 0;
- if(midibuf_is_full(this) || (length <= 0))
+ if (midibuf_is_full(this) || (length <= 0))
return 0;
/* skip trailing active sense */
- if(data[length - 1] == 0xfe) {
+ if (data[length - 1] == 0xfe) {
--length;
skip_active_sense = 1;
}
bytes_free = midibuf_bytes_free(this);
- if(length > bytes_free)
+ if (length > bytes_free)
length = bytes_free;
- if(length > 0) {
+ if (length > 0) {
length1 = this->size - this->pos_write;
- if(length < length1) {
+ if (length < length1) {
/* no buffer wraparound */
memcpy(this->buf + this->pos_write, data, length);
this->pos_write += length;
- }
- else {
+ } else {
/* buffer wraparound */
length2 = length - length1;
memcpy(this->buf + this->pos_write, data, length1);
@@ -121,7 +122,7 @@ int midibuf_write(struct MidiBuffer *this, unsigned char *data, int length)
this->pos_write = length2;
}
- if(this->pos_write == this->pos_read)
+ if (this->pos_write == this->pos_read)
this->full = 1;
}
@@ -137,15 +138,16 @@ int midibuf_read(struct MidiBuffer *this, unsigned char *data, int length)
int repeat = 0;
int i;
- if(length < 3)
- return -EINVAL; /* we need to be able to store at least a 3 byte MIDI message */
+ /* we need to be able to store at least a 3 byte MIDI message */
+ if (length < 3)
+ return -EINVAL;
- if(midibuf_is_empty(this))
+ if (midibuf_is_empty(this))
return 0;
bytes_used = midibuf_bytes_used(this);
- if(length > bytes_used)
+ if (length > bytes_used)
length = bytes_used;
length1 = this->size - this->pos_read;
@@ -153,75 +155,69 @@ int midibuf_read(struct MidiBuffer *this, unsigned char *data, int length)
/* check MIDI command length */
command = this->buf[this->pos_read];
- if(command & 0x80) {
+ if (command & 0x80) {
midi_length = midibuf_message_length(command);
this->command_prev = command;
- }
- else {
- if(this->command_prev > 0) {
+ } else {
+ if (this->command_prev > 0) {
int midi_length_prev = midibuf_message_length(this->command_prev);
- if(midi_length_prev > 0) {
+ if (midi_length_prev > 0) {
midi_length = midi_length_prev - 1;
repeat = 1;
- }
- else
+ } else
midi_length = -1;
- }
- else
+ } else
midi_length = -1;
}
- if(midi_length < 0) {
+ if (midi_length < 0) {
/* search for end of message */
- if(length < length1) {
+ if (length < length1) {
/* no buffer wraparound */
- for(i = 1; i < length; ++i)
- if(this->buf[this->pos_read + i] & 0x80)
+ for (i = 1; i < length; ++i)
+ if (this->buf[this->pos_read + i] & 0x80)
break;
midi_length = i;
- }
- else {
+ } else {
/* buffer wraparound */
length2 = length - length1;
- for(i = 1; i < length1; ++i)
- if(this->buf[this->pos_read + i] & 0x80)
+ for (i = 1; i < length1; ++i)
+ if (this->buf[this->pos_read + i] & 0x80)
break;
- if(i < length1)
+ if (i < length1)
midi_length = i;
else {
- for(i = 0; i < length2; ++i)
- if(this->buf[i] & 0x80)
+ for (i = 0; i < length2; ++i)
+ if (this->buf[i] & 0x80)
break;
midi_length = length1 + i;
}
}
- if(midi_length == length)
+ if (midi_length == length)
midi_length = -1; /* end of message not found */
}
- if(midi_length < 0) {
- if(!this->split)
+ if (midi_length < 0) {
+ if (!this->split)
return 0; /* command is not yet complete */
- }
- else {
- if(length < midi_length)
+ } else {
+ if (length < midi_length)
return 0; /* command is not yet complete */
length = midi_length;
}
- if(length < length1) {
+ if (length < length1) {
/* no buffer wraparound */
memcpy(data + repeat, this->buf + this->pos_read, length);
this->pos_read += length;
- }
- else {
+ } else {
/* buffer wraparound */
length2 = length - length1;
memcpy(data + repeat, this->buf + this->pos_read, length1);
@@ -229,7 +225,7 @@ int midibuf_read(struct MidiBuffer *this, unsigned char *data, int length)
this->pos_read = length2;
}
- if(repeat)
+ if (repeat)
data[0] = this->command_prev;
this->full = 0;
@@ -240,7 +236,7 @@ int midibuf_ignore(struct MidiBuffer *this, int length)
{
int bytes_used = midibuf_bytes_used(this);
- if(length > bytes_used)
+ if (length > bytes_used)
length = bytes_used;
this->pos_read = (this->pos_read + length) % this->size;
@@ -252,8 +248,8 @@ int midibuf_skip_message(struct MidiBuffer *this, unsigned short mask)
{
int cmd = this->command_prev;
- if((cmd >= 0x80) && (cmd < 0xf0))
- if((mask & (1 << (cmd & 0x0f))) == 0)
+ if ((cmd >= 0x80) && (cmd < 0xf0))
+ if ((mask & (1 << (cmd & 0x0f))) == 0)
return 1;
return 0;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-13 04:01:39 +0000