/*
- * Line6 Linux USB driver - 0.8.0
+ * Line6 Linux USB driver - 0.9.1beta
*
- * Copyright (C) 2004-2009 Markus Grabner (grabner@icg.tugraz.at)
+ * Copyright (C) 2004-2010 Markus Grabner (grabner@icg.tugraz.at)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
*
*/
-#include "driver.h"
-
-#include <linux/slab.h>
-
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include "audio.h"
+#include "capture.h"
+#include "driver.h"
#include "pcm.h"
#include "pod.h"
#include "playback.h"
}
}
+#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
+
+/*
+ Create signal for impulse response test.
+*/
+static void create_impulse_test_signal(struct snd_line6_pcm *line6pcm,
+ struct urb *urb_out, int bytes_per_frame)
+{
+ int frames = urb_out->transfer_buffer_length / bytes_per_frame;
+
+ if (bytes_per_frame == 4) {
+ int i;
+ short *pi = (short *)line6pcm->prev_fbuf;
+ short *po = (short *)urb_out->transfer_buffer;
+
+ for (i = 0; i < frames; ++i) {
+ po[0] = pi[0];
+ po[1] = 0;
+ pi += 2;
+ po += 2;
+ }
+ } else if (bytes_per_frame == 6) {
+ int i, j;
+ unsigned char *pi = line6pcm->prev_fbuf;
+ unsigned char *po = urb_out->transfer_buffer;
+
+ for (i = 0; i < frames; ++i) {
+ for (j = 0; j < bytes_per_frame / 2; ++j)
+ po[j] = pi[j];
+
+ for (; j < bytes_per_frame; ++j)
+ po[j] = 0;
+
+ pi += bytes_per_frame;
+ po += bytes_per_frame;
+ }
+ }
+ if (--line6pcm->impulse_count <= 0) {
+ ((unsigned char *)(urb_out->transfer_buffer))[bytes_per_frame -
+ 1] =
+ line6pcm->impulse_volume;
+ line6pcm->impulse_count = line6pcm->impulse_period;
+ }
+}
+
+#endif
+
+/*
+ Add signal to buffer for software monitoring.
+*/
+static void add_monitor_signal(struct urb *urb_out, unsigned char *signal,
+ int volume, int bytes_per_frame)
+{
+ if (volume == 0)
+ return; /* zero volume - no change */
+
+ if (bytes_per_frame == 4) {
+ short *pi, *po, *buf_end;
+ pi = (short *)signal;
+ po = (short *)urb_out->transfer_buffer;
+ buf_end = po + urb_out->transfer_buffer_length / sizeof(*po);
+
+ for (; po < buf_end; ++pi, ++po)
+ *po += (*pi * volume) >> 8;
+ }
+
+ /*
+ We don't need to handle devices with 6 bytes per frame here
+ since they all support hardware monitoring.
+ */
+}
+
/*
Find a free URB, prepare audio data, and submit URB.
*/
-static int submit_audio_out_urb(struct snd_pcm_substream *substream)
+static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm)
{
int index;
unsigned long flags;
int i, urb_size, urb_frames;
- struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
+ int ret;
const int bytes_per_frame = line6pcm->properties->bytes_per_frame;
const int frame_increment =
line6pcm->properties->snd_line6_rates.rats[0].num_min;
const int frame_factor =
line6pcm->properties->snd_line6_rates.rats[0].den *
(USB_INTERVALS_PER_SECOND / LINE6_ISO_INTERVAL);
- struct snd_pcm_runtime *runtime = substream->runtime;
struct urb *urb_out;
spin_lock_irqsave(&line6pcm->lock_audio_out, flags);
if (index < 0 || index >= LINE6_ISO_BUFFERS) {
spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
- dev_err(s2m(substream), "no free URB found\n");
+ dev_err(line6pcm->line6->ifcdev, "no free URB found\n");
return -EINVAL;
}
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {
/* compute frame size for given sampling rate */
- int n, fs;
+ int fsize = 0;
struct usb_iso_packet_descriptor *fout =
&urb_out->iso_frame_desc[i];
- line6pcm->count_out += frame_increment;
- n = line6pcm->count_out / frame_factor;
- line6pcm->count_out -= n * frame_factor;
- fs = n * bytes_per_frame;
+
+ if (line6pcm->flags & MASK_CAPTURE)
+ fsize = line6pcm->prev_fsize;
+
+ if (fsize == 0) {
+ int n;
+ line6pcm->count_out += frame_increment;
+ n = line6pcm->count_out / frame_factor;
+ line6pcm->count_out -= n * frame_factor;
+ fsize = n * bytes_per_frame;
+ }
+
fout->offset = urb_size;
- fout->length = fs;
- urb_size += fs;
+ fout->length = fsize;
+ urb_size += fsize;
+ }
+
+ if (urb_size == 0) {
+ /* can't determine URB size */
+ spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
+ dev_err(line6pcm->line6->ifcdev, "driver bug: urb_size = 0\n"); /* this is somewhat paranoid */
+ return -EINVAL;
}
urb_frames = urb_size / bytes_per_frame;
+ urb_out->transfer_buffer =
+ line6pcm->buffer_out +
+ line6pcm->max_packet_size * line6pcm->index_out;
+ urb_out->transfer_buffer_length = urb_size;
+ urb_out->context = line6pcm;
+
+ if (++line6pcm->index_out == LINE6_ISO_BUFFERS)
+ line6pcm->index_out = 0;
+
+ if (test_bit(BIT_PCM_ALSA_PLAYBACK, &line6pcm->flags) &&
+ !test_bit(BIT_PAUSE_PLAYBACK, &line6pcm->flags)) {
+ struct snd_pcm_runtime *runtime =
+ get_substream(line6pcm, SNDRV_PCM_STREAM_PLAYBACK)->runtime;
- if (test_bit(BIT_PAUSE_PLAYBACK, &line6pcm->flags)) {
- urb_out->transfer_buffer = line6pcm->wrap_out;
- memset(line6pcm->wrap_out, 0, urb_size);
- } else {
if (line6pcm->pos_out + urb_frames > runtime->buffer_size) {
/*
The transferred area goes over buffer boundary,
*/
int len;
len = runtime->buffer_size - line6pcm->pos_out;
- urb_out->transfer_buffer = line6pcm->wrap_out;
if (len > 0) {
- memcpy(line6pcm->wrap_out,
+ memcpy(urb_out->transfer_buffer,
runtime->dma_area +
line6pcm->pos_out * bytes_per_frame,
len * bytes_per_frame);
- memcpy(line6pcm->wrap_out +
+ memcpy(urb_out->transfer_buffer +
len * bytes_per_frame, runtime->dma_area,
(urb_frames - len) * bytes_per_frame);
- } else {
- /* this is somewhat paranoid */
- dev_err(s2m(substream),
- "driver bug: len = %d\n", len);
- }
+ } else
+ dev_err(line6pcm->line6->ifcdev, "driver bug: len = %d\n", len); /* this is somewhat paranoid */
} else {
+#if LINE6_REUSE_DMA_AREA_FOR_PLAYBACK
/* set the buffer pointer */
urb_out->transfer_buffer =
runtime->dma_area +
line6pcm->pos_out * bytes_per_frame;
+#else
+ /* copy data */
+ memcpy(urb_out->transfer_buffer,
+ runtime->dma_area +
+ line6pcm->pos_out * bytes_per_frame,
+ urb_out->transfer_buffer_length);
+#endif
}
- }
- line6pcm->pos_out += urb_frames;
- if (line6pcm->pos_out >= runtime->buffer_size)
- line6pcm->pos_out -= runtime->buffer_size;
-
- urb_out->transfer_buffer_length = urb_size;
- urb_out->context = substream;
- change_volume(urb_out, line6pcm->volume, bytes_per_frame);
+ line6pcm->pos_out += urb_frames;
+ if (line6pcm->pos_out >= runtime->buffer_size)
+ line6pcm->pos_out -= runtime->buffer_size;
+ } else {
+ memset(urb_out->transfer_buffer, 0,
+ urb_out->transfer_buffer_length);
+ }
-#if DO_DUMP_PCM_SEND
+ change_volume(urb_out, line6pcm->volume_playback, bytes_per_frame);
+
+ if (line6pcm->prev_fbuf != 0) {
+#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
+ if (line6pcm->flags & MASK_PCM_IMPULSE) {
+ create_impulse_test_signal(line6pcm, urb_out,
+ bytes_per_frame);
+ if (line6pcm->flags & MASK_PCM_ALSA_CAPTURE) {
+ line6_capture_copy(line6pcm,
+ urb_out->transfer_buffer,
+ urb_out->
+ transfer_buffer_length);
+ line6_capture_check_period(line6pcm,
+ urb_out->transfer_buffer_length);
+ }
+ } else {
+#endif
+ if (!
+ (line6pcm->line6->
+ properties->capabilities & LINE6_BIT_HWMON)
+&& (line6pcm->flags & MASK_PLAYBACK)
+&& (line6pcm->flags & MASK_CAPTURE))
+ add_monitor_signal(urb_out, line6pcm->prev_fbuf,
+ line6pcm->volume_monitor,
+ bytes_per_frame);
+#ifdef CONFIG_LINE6_USB_IMPULSE_RESPONSE
+ }
+#endif
+ }
+#ifdef CONFIG_LINE6_USB_DUMP_PCM
for (i = 0; i < LINE6_ISO_PACKETS; ++i) {
struct usb_iso_packet_descriptor *fout =
&urb_out->iso_frame_desc[i];
}
#endif
- if (usb_submit_urb(urb_out, GFP_ATOMIC) == 0)
+ ret = usb_submit_urb(urb_out, GFP_ATOMIC);
+
+ if (ret == 0)
set_bit(index, &line6pcm->active_urb_out);
else
- dev_err(s2m(substream), "URB out #%d submission failed\n",
- index);
+ dev_err(line6pcm->line6->ifcdev,
+ "URB out #%d submission failed (%d)\n", index, ret);
spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
return 0;
/*
Submit all currently available playback URBs.
*/
-static int submit_audio_out_all_urbs(struct snd_pcm_substream *substream)
+int line6_submit_audio_out_all_urbs(struct snd_line6_pcm *line6pcm)
{
int ret, i;
for (i = 0; i < LINE6_ISO_BUFFERS; ++i) {
- ret = submit_audio_out_urb(substream);
+ ret = submit_audio_out_urb(line6pcm);
if (ret < 0)
return ret;
}
/*
Unlink all currently active playback URBs.
*/
-static void unlink_audio_out_urbs(struct snd_line6_pcm *line6pcm)
+void line6_unlink_audio_out_urbs(struct snd_line6_pcm *line6pcm)
{
unsigned int i;
}
/*
- Wait until unlinking of all currently active playback URBs has been finished.
+ Wait until unlinking of all currently active playback URBs has been finished.
*/
static void wait_clear_audio_out_urbs(struct snd_line6_pcm *line6pcm)
{
} while (--timeout > 0);
if (alive)
snd_printk(KERN_ERR "timeout: still %d active urbs..\n", alive);
-
- line6pcm->active_urb_out = 0;
- line6pcm->unlink_urb_out = 0;
}
/*
Unlink all currently active playback URBs, and wait for finishing.
*/
-void unlink_wait_clear_audio_out_urbs(struct snd_line6_pcm *line6pcm)
+void line6_unlink_wait_clear_audio_out_urbs(struct snd_line6_pcm *line6pcm)
{
- unlink_audio_out_urbs(line6pcm);
+ line6_unlink_audio_out_urbs(line6pcm);
wait_clear_audio_out_urbs(line6pcm);
}
int i, index, length = 0, shutdown = 0;
unsigned long flags;
+ struct snd_line6_pcm *line6pcm = (struct snd_line6_pcm *)urb->context;
struct snd_pcm_substream *substream =
- (struct snd_pcm_substream *)urb->context;
- struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
- struct snd_pcm_runtime *runtime = substream->runtime;
+ get_substream(line6pcm, SNDRV_PCM_STREAM_PLAYBACK);
+
+#if USE_CLEAR_BUFFER_WORKAROUND
+ memset(urb->transfer_buffer, 0, urb->transfer_buffer_length);
+#endif
+
+ line6pcm->last_frame_out = urb->start_frame;
/* find index of URB */
for (index = LINE6_ISO_BUFFERS; index--;)
length += urb->iso_frame_desc[i].length;
spin_lock_irqsave(&line6pcm->lock_audio_out, flags);
- line6pcm->pos_out_done +=
- length / line6pcm->properties->bytes_per_frame;
- if (line6pcm->pos_out_done >= runtime->buffer_size)
- line6pcm->pos_out_done -= runtime->buffer_size;
+ if (test_bit(BIT_PCM_ALSA_PLAYBACK, &line6pcm->flags)) {
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ line6pcm->pos_out_done +=
+ length / line6pcm->properties->bytes_per_frame;
+
+ if (line6pcm->pos_out_done >= runtime->buffer_size)
+ line6pcm->pos_out_done -= runtime->buffer_size;
+ }
clear_bit(index, &line6pcm->active_urb_out);
for (i = LINE6_ISO_PACKETS; i--;)
- if (urb->iso_frame_desc[i].status == -ESHUTDOWN) {
+ if (urb->iso_frame_desc[i].status == -EXDEV) {
shutdown = 1;
break;
}
- if (test_bit(index, &line6pcm->unlink_urb_out))
+ if (test_and_clear_bit(index, &line6pcm->unlink_urb_out))
shutdown = 1;
spin_unlock_irqrestore(&line6pcm->lock_audio_out, flags);
if (!shutdown) {
- submit_audio_out_urb(substream);
+ submit_audio_out_urb(line6pcm);
- line6pcm->bytes_out += length;
- if (line6pcm->bytes_out >= line6pcm->period_out) {
- line6pcm->bytes_out -= line6pcm->period_out;
- snd_pcm_period_elapsed(substream);
+ if (test_bit(BIT_PCM_ALSA_PLAYBACK, &line6pcm->flags)) {
+ line6pcm->bytes_out += length;
+ if (line6pcm->bytes_out >= line6pcm->period_out) {
+ line6pcm->bytes_out %= line6pcm->period_out;
+ snd_pcm_period_elapsed(substream);
+ }
}
}
}
struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
err = snd_pcm_hw_constraint_ratdens(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
- (&line6pcm->properties->
- snd_line6_rates));
+ (&line6pcm->
+ properties->snd_line6_rates));
if (err < 0)
return err;
return ret;
line6pcm->period_out = params_period_bytes(hw_params);
- line6pcm->wrap_out = kmalloc(2 * LINE6_ISO_PACKET_SIZE_MAX, GFP_KERNEL);
-
- if (!line6pcm->wrap_out) {
- dev_err(s2m(substream), "cannot malloc wrap_out\n");
- return -ENOMEM;
- }
-
return 0;
}
/* hw_free playback callback */
static int snd_line6_playback_hw_free(struct snd_pcm_substream *substream)
{
- struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
- unlink_wait_clear_audio_out_urbs(line6pcm);
-
- kfree(line6pcm->wrap_out);
- line6pcm->wrap_out = NULL;
-
return snd_pcm_lib_free_pages(substream);
}
/* trigger playback callback */
-int snd_line6_playback_trigger(struct snd_pcm_substream *substream, int cmd)
+int snd_line6_playback_trigger(struct snd_line6_pcm *line6pcm, int cmd)
{
- struct snd_line6_pcm *line6pcm = snd_pcm_substream_chip(substream);
int err;
- line6pcm->count_out = 0;
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
- if (!test_and_set_bit(BIT_RUNNING_PLAYBACK, &line6pcm->flags)) {
- err = submit_audio_out_all_urbs(substream);
+#ifdef CONFIG_PM
+ case SNDRV_PCM_TRIGGER_RESUME:
+#endif
+ err = line6_pcm_start(line6pcm, MASK_PCM_ALSA_PLAYBACK);
- if (err < 0) {
- clear_bit(BIT_RUNNING_PLAYBACK,
- &line6pcm->flags);
- return err;
- }
- }
+ if (err < 0)
+ return err;
break;
case SNDRV_PCM_TRIGGER_STOP:
- if (test_and_clear_bit(BIT_RUNNING_PLAYBACK, &line6pcm->flags))
- unlink_audio_out_urbs(line6pcm);
+#ifdef CONFIG_PM
+ case SNDRV_PCM_TRIGGER_SUSPEND:
+#endif
+ err = line6_pcm_stop(line6pcm, MASK_PCM_ALSA_PLAYBACK);
+
+ if (err < 0)
+ return err;
break;
.pointer = snd_line6_playback_pointer,
};
-int create_audio_out_urbs(struct snd_line6_pcm *line6pcm)
+int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm)
{
int i;
urb->dev = line6pcm->line6->usbdev;
urb->pipe =
usb_sndisocpipe(line6pcm->line6->usbdev,
- line6pcm->
- ep_audio_write & USB_ENDPOINT_NUMBER_MASK);
+ line6pcm->ep_audio_write &
+ USB_ENDPOINT_NUMBER_MASK);
urb->transfer_flags = URB_ISO_ASAP;
urb->start_frame = -1;
urb->number_of_packets = LINE6_ISO_PACKETS;
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