955 lines
28 KiB
C
955 lines
28 KiB
C
/******************************************************************************
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* *
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* easycap_sound.c *
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* *
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* Audio driver for EasyCAP USB2.0 Video Capture Device DC60 *
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* *
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* *
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******************************************************************************/
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/*
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*
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* Copyright (C) 2010 R.M. Thomas <rmthomas@sciolus.org>
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*
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* The software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/*****************************************************************************/
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#include "easycap.h"
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/*****************************************************************************/
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/**************************** **************************/
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/**************************** Open Sound System **************************/
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/**************************** **************************/
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/*****************************************************************************/
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/*--------------------------------------------------------------------------*/
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/*
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* PARAMETERS USED WHEN REGISTERING THE AUDIO INTERFACE
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*/
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/*--------------------------------------------------------------------------*/
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/*****************************************************************************/
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/*---------------------------------------------------------------------------*/
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/*
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* ON COMPLETION OF AN AUDIO URB ITS DATA IS COPIED TO THE AUDIO BUFFERS
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* PROVIDED peasycap->audio_idle IS ZERO. REGARDLESS OF THIS BEING TRUE,
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* IT IS RESUBMITTED PROVIDED peasycap->audio_isoc_streaming IS NOT ZERO.
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*/
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/*---------------------------------------------------------------------------*/
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void
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easyoss_complete(struct urb *purb)
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{
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struct easycap *peasycap;
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struct data_buffer *paudio_buffer;
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u8 *p1, *p2;
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s16 tmp;
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int i, j, more, much, leap, rc;
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#ifdef UPSAMPLE
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int k;
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s16 oldaudio, newaudio, delta;
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#endif /*UPSAMPLE*/
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JOT(16, "\n");
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if (!purb) {
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SAY("ERROR: purb is NULL\n");
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return;
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}
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peasycap = purb->context;
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if (!peasycap) {
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SAY("ERROR: peasycap is NULL\n");
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return;
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}
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if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
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SAY("ERROR: bad peasycap\n");
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return;
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}
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much = 0;
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if (peasycap->audio_idle) {
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JOM(16, "%i=audio_idle %i=audio_isoc_streaming\n",
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peasycap->audio_idle, peasycap->audio_isoc_streaming);
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if (peasycap->audio_isoc_streaming) {
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rc = usb_submit_urb(purb, GFP_ATOMIC);
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if (rc) {
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if (-ENODEV != rc && -ENOENT != rc) {
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SAM("ERROR: while %i=audio_idle, "
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"usb_submit_urb() failed with rc: -%s: %d\n",
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peasycap->audio_idle,
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strerror(rc), rc);
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}
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}
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}
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return;
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}
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/*---------------------------------------------------------------------------*/
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if (purb->status) {
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if ((-ESHUTDOWN == purb->status) || (-ENOENT == purb->status)) {
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JOM(16, "urb status -ESHUTDOWN or -ENOENT\n");
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return;
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}
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SAM("ERROR: non-zero urb status: -%s: %d\n",
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strerror(purb->status), purb->status);
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goto resubmit;
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}
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/*---------------------------------------------------------------------------*/
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/*
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* PROCEED HERE WHEN NO ERROR
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*/
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/*---------------------------------------------------------------------------*/
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#ifdef UPSAMPLE
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oldaudio = peasycap->oldaudio;
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#endif /*UPSAMPLE*/
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for (i = 0; i < purb->number_of_packets; i++) {
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if (!purb->iso_frame_desc[i].status) {
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SAM("-%s\n", strerror(purb->iso_frame_desc[i].status));
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more = purb->iso_frame_desc[i].actual_length;
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if (!more)
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peasycap->audio_mt++;
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else {
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if (peasycap->audio_mt) {
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JOM(12, "%4i empty audio urb frames\n",
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peasycap->audio_mt);
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peasycap->audio_mt = 0;
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}
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p1 = (u8 *)(purb->transfer_buffer + purb->iso_frame_desc[i].offset);
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leap = 0;
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p1 += leap;
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more -= leap;
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/*
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* COPY more BYTES FROM ISOC BUFFER
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* TO AUDIO BUFFER, CONVERTING
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* 8-BIT MONO TO 16-BIT SIGNED
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* LITTLE-ENDIAN SAMPLES IF NECESSARY
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*/
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while (more) {
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if (0 > more) {
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SAM("MISTAKE: more is negative\n");
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return;
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}
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if (peasycap->audio_buffer_page_many <= peasycap->audio_fill) {
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SAM("ERROR: bad peasycap->audio_fill\n");
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return;
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}
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paudio_buffer = &peasycap->audio_buffer[peasycap->audio_fill];
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if (PAGE_SIZE < (paudio_buffer->pto - paudio_buffer->pgo)) {
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SAM("ERROR: bad paudio_buffer->pto\n");
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return;
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}
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if (PAGE_SIZE == (paudio_buffer->pto - paudio_buffer->pgo)) {
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paudio_buffer->pto = paudio_buffer->pgo;
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(peasycap->audio_fill)++;
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if (peasycap->audio_buffer_page_many <= peasycap->audio_fill)
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peasycap->audio_fill = 0;
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JOM(8, "bumped peasycap->"
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"audio_fill to %i\n",
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peasycap->audio_fill);
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paudio_buffer = &peasycap->audio_buffer[peasycap->audio_fill];
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paudio_buffer->pto = paudio_buffer->pgo;
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if (!(peasycap->audio_fill % peasycap->audio_pages_per_fragment)) {
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JOM(12, "wakeup call on wq_audio, %i=frag reading %i=fragment fill\n",
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(peasycap->audio_read / peasycap->audio_pages_per_fragment),
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(peasycap->audio_fill / peasycap->audio_pages_per_fragment));
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wake_up_interruptible(&(peasycap->wq_audio));
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}
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}
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much = PAGE_SIZE - (int)(paudio_buffer->pto - paudio_buffer->pgo);
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if (!peasycap->microphone) {
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if (much > more)
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much = more;
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memcpy(paudio_buffer->pto, p1, much);
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p1 += much;
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more -= much;
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} else {
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#ifdef UPSAMPLE
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if (much % 16)
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JOM(8, "MISTAKE? much"
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" is not divisible by 16\n");
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if (much > (16 * more))
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much = 16 * more;
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p2 = (u8 *)paudio_buffer->pto;
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for (j = 0; j < (much/16); j++) {
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newaudio = ((int) *p1) - 128;
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newaudio = 128 * newaudio;
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delta = (newaudio - oldaudio) / 4;
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tmp = oldaudio + delta;
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for (k = 0; k < 4; k++) {
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*p2 = (0x00FF & tmp);
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*(p2 + 1) = (0xFF00 & tmp) >> 8;
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p2 += 2;
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*p2 = (0x00FF & tmp);
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*(p2 + 1) = (0xFF00 & tmp) >> 8;
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p2 += 2;
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tmp += delta;
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}
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p1++;
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more--;
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oldaudio = tmp;
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}
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#else /*!UPSAMPLE*/
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if (much > (2 * more))
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much = 2 * more;
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p2 = (u8 *)paudio_buffer->pto;
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for (j = 0; j < (much / 2); j++) {
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tmp = ((int) *p1) - 128;
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tmp = 128 * tmp;
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*p2 = (0x00FF & tmp);
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*(p2 + 1) = (0xFF00 & tmp) >> 8;
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p1++;
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p2 += 2;
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more--;
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}
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#endif /*UPSAMPLE*/
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}
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(paudio_buffer->pto) += much;
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}
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}
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} else {
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JOM(12, "discarding audio samples because "
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"%i=purb->iso_frame_desc[i].status\n",
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purb->iso_frame_desc[i].status);
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}
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#ifdef UPSAMPLE
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peasycap->oldaudio = oldaudio;
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#endif /*UPSAMPLE*/
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}
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/*---------------------------------------------------------------------------*/
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/*
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* RESUBMIT THIS URB
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*/
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/*---------------------------------------------------------------------------*/
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resubmit:
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if (peasycap->audio_isoc_streaming) {
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rc = usb_submit_urb(purb, GFP_ATOMIC);
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if (rc) {
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if (-ENODEV != rc && -ENOENT != rc) {
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SAM("ERROR: while %i=audio_idle, "
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"usb_submit_urb() failed "
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"with rc: -%s: %d\n", peasycap->audio_idle,
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strerror(rc), rc);
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}
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}
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}
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return;
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}
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/*****************************************************************************/
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/*---------------------------------------------------------------------------*/
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/*
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* THE AUDIO URBS ARE SUBMITTED AT THIS EARLY STAGE SO THAT IT IS POSSIBLE TO
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* STREAM FROM /dev/easyoss1 WITH SIMPLE PROGRAMS SUCH AS cat WHICH DO NOT
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* HAVE AN IOCTL INTERFACE.
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*/
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/*---------------------------------------------------------------------------*/
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static int easyoss_open(struct inode *inode, struct file *file)
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{
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struct usb_interface *pusb_interface;
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struct easycap *peasycap;
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int subminor;
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struct v4l2_device *pv4l2_device;
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JOT(4, "begins\n");
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subminor = iminor(inode);
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pusb_interface = usb_find_interface(&easycap_usb_driver, subminor);
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if (!pusb_interface) {
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SAY("ERROR: pusb_interface is NULL\n");
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SAY("ending unsuccessfully\n");
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return -1;
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}
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peasycap = usb_get_intfdata(pusb_interface);
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if (!peasycap) {
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SAY("ERROR: peasycap is NULL\n");
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SAY("ending unsuccessfully\n");
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return -1;
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}
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/*---------------------------------------------------------------------------*/
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/*
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* SOME VERSIONS OF THE videodev MODULE OVERWRITE THE DATA WHICH HAS
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* BEEN WRITTEN BY THE CALL TO usb_set_intfdata() IN easycap_usb_probe(),
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* REPLACING IT WITH A POINTER TO THE EMBEDDED v4l2_device STRUCTURE.
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* TO DETECT THIS, THE STRING IN THE easycap.telltale[] BUFFER IS CHECKED.
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*/
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/*---------------------------------------------------------------------------*/
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if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
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pv4l2_device = usb_get_intfdata(pusb_interface);
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if (!pv4l2_device) {
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SAY("ERROR: pv4l2_device is NULL\n");
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return -EFAULT;
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}
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peasycap = container_of(pv4l2_device,
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struct easycap, v4l2_device);
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}
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/*---------------------------------------------------------------------------*/
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if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
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SAY("ERROR: bad peasycap: %p\n", peasycap);
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return -EFAULT;
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}
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/*---------------------------------------------------------------------------*/
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file->private_data = peasycap;
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if (0 != easycap_sound_setup(peasycap)) {
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;
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;
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}
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return 0;
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}
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/*****************************************************************************/
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static int easyoss_release(struct inode *inode, struct file *file)
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{
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struct easycap *peasycap;
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JOT(4, "begins\n");
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peasycap = file->private_data;
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if (!peasycap) {
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SAY("ERROR: peasycap is NULL.\n");
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return -EFAULT;
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}
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if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
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SAY("ERROR: bad peasycap: %p\n", peasycap);
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return -EFAULT;
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}
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if (0 != kill_audio_urbs(peasycap)) {
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SAM("ERROR: kill_audio_urbs() failed\n");
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return -EFAULT;
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}
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JOM(4, "ending successfully\n");
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return 0;
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}
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/*****************************************************************************/
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static ssize_t easyoss_read(struct file *file, char __user *puserspacebuffer,
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size_t kount, loff_t *poff)
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{
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struct timeval timeval;
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long long int above, below, mean;
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struct signed_div_result sdr;
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unsigned char *p0;
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long int kount1, more, rc, l0, lm;
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int fragment, kd;
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struct easycap *peasycap;
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struct data_buffer *pdata_buffer;
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size_t szret;
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/*---------------------------------------------------------------------------*/
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/*
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* DO A BLOCKING READ TO TRANSFER DATA TO USER SPACE.
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*
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******************************************************************************
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***** N.B. IF THIS FUNCTION RETURNS 0, NOTHING IS SEEN IN USER SPACE. ******
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***** THIS CONDITION SIGNIFIES END-OF-FILE. ******
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******************************************************************************
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*/
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/*---------------------------------------------------------------------------*/
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JOT(8, "%5zd=kount %5lld=*poff\n", kount, *poff);
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if (!file) {
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SAY("ERROR: file is NULL\n");
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return -ERESTARTSYS;
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}
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peasycap = file->private_data;
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if (!peasycap) {
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SAY("ERROR in easyoss_read(): peasycap is NULL\n");
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return -EFAULT;
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}
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if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
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SAY("ERROR: bad peasycap: %p\n", peasycap);
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return -EFAULT;
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}
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if (!peasycap->pusb_device) {
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SAY("ERROR: peasycap->pusb_device is NULL\n");
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return -EFAULT;
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}
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kd = isdongle(peasycap);
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if (0 <= kd && DONGLE_MANY > kd) {
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if (mutex_lock_interruptible(&(easycapdc60_dongle[kd].mutex_audio))) {
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SAY("ERROR: "
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"cannot lock dongle[%i].mutex_audio\n", kd);
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return -ERESTARTSYS;
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}
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JOM(4, "locked dongle[%i].mutex_audio\n", kd);
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/*
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* MEANWHILE, easycap_usb_disconnect()
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* MAY HAVE FREED POINTER peasycap,
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* IN WHICH CASE A REPEAT CALL TO isdongle() WILL FAIL.
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* IF NECESSARY, BAIL OUT.
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*/
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if (kd != isdongle(peasycap))
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return -ERESTARTSYS;
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if (!file) {
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SAY("ERROR: file is NULL\n");
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mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
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return -ERESTARTSYS;
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}
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peasycap = file->private_data;
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if (!peasycap) {
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SAY("ERROR: peasycap is NULL\n");
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mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
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return -ERESTARTSYS;
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}
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if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
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SAY("ERROR: bad peasycap: %p\n", peasycap);
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mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
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return -ERESTARTSYS;
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}
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if (!peasycap->pusb_device) {
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SAM("ERROR: peasycap->pusb_device is NULL\n");
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mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
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return -ERESTARTSYS;
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}
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} else {
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/*
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* IF easycap_usb_disconnect()
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* HAS ALREADY FREED POINTER peasycap BEFORE THE
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* ATTEMPT TO ACQUIRE THE SEMAPHORE,
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* isdongle() WILL HAVE FAILED. BAIL OUT.
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*/
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return -ERESTARTSYS;
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}
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/*---------------------------------------------------------------------------*/
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JOT(16, "%sBLOCKING kount=%zd, *poff=%lld\n",
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(file->f_flags & O_NONBLOCK) ? "NON" : "", kount, *poff);
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if ((0 > peasycap->audio_read) ||
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(peasycap->audio_buffer_page_many <= peasycap->audio_read)) {
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SAM("ERROR: peasycap->audio_read out of range\n");
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mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
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return -EFAULT;
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}
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pdata_buffer = &peasycap->audio_buffer[peasycap->audio_read];
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if (!pdata_buffer) {
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SAM("ERROR: pdata_buffer is NULL\n");
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mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
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return -EFAULT;
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}
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JOM(12, "before wait, %i=frag read %i=frag fill\n",
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(peasycap->audio_read / peasycap->audio_pages_per_fragment),
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(peasycap->audio_fill / peasycap->audio_pages_per_fragment));
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fragment = (peasycap->audio_read / peasycap->audio_pages_per_fragment);
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while ((fragment == (peasycap->audio_fill / peasycap->audio_pages_per_fragment)) ||
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(0 == (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo)))) {
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if (file->f_flags & O_NONBLOCK) {
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JOM(16, "returning -EAGAIN as instructed\n");
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mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
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return -EAGAIN;
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}
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rc = wait_event_interruptible(peasycap->wq_audio,
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(peasycap->audio_idle || peasycap->audio_eof ||
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((fragment !=
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(peasycap->audio_fill / peasycap->audio_pages_per_fragment)) &&
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(0 < (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo))))));
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if (rc) {
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SAM("aborted by signal\n");
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mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
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return -ERESTARTSYS;
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}
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if (peasycap->audio_eof) {
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JOM(8, "returning 0 because %i=audio_eof\n",
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peasycap->audio_eof);
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kill_audio_urbs(peasycap);
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mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
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return 0;
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}
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if (peasycap->audio_idle) {
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JOM(16, "returning 0 because %i=audio_idle\n",
|
|
peasycap->audio_idle);
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return 0;
|
|
}
|
|
if (!peasycap->audio_isoc_streaming) {
|
|
JOM(16, "returning 0 because audio urbs not streaming\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return 0;
|
|
}
|
|
}
|
|
JOM(12, "after wait, %i=frag read %i=frag fill\n",
|
|
(peasycap->audio_read / peasycap->audio_pages_per_fragment),
|
|
(peasycap->audio_fill / peasycap->audio_pages_per_fragment));
|
|
szret = (size_t)0;
|
|
fragment = (peasycap->audio_read / peasycap->audio_pages_per_fragment);
|
|
while (fragment == (peasycap->audio_read / peasycap->audio_pages_per_fragment)) {
|
|
if (!pdata_buffer->pgo) {
|
|
SAM("ERROR: pdata_buffer->pgo is NULL\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
if (!pdata_buffer->pto) {
|
|
SAM("ERROR: pdata_buffer->pto is NULL\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
kount1 = PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo);
|
|
if (0 > kount1) {
|
|
SAM("MISTAKE: kount1 is negative\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -ERESTARTSYS;
|
|
}
|
|
if (!kount1) {
|
|
peasycap->audio_read++;
|
|
if (peasycap->audio_buffer_page_many <= peasycap->audio_read)
|
|
peasycap->audio_read = 0;
|
|
JOM(12, "bumped peasycap->audio_read to %i\n",
|
|
peasycap->audio_read);
|
|
|
|
if (fragment != (peasycap->audio_read / peasycap->audio_pages_per_fragment))
|
|
break;
|
|
|
|
if ((0 > peasycap->audio_read) ||
|
|
(peasycap->audio_buffer_page_many <= peasycap->audio_read)) {
|
|
SAM("ERROR: peasycap->audio_read out of range\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
pdata_buffer = &peasycap->audio_buffer[peasycap->audio_read];
|
|
if (!pdata_buffer) {
|
|
SAM("ERROR: pdata_buffer is NULL\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
if (!pdata_buffer->pgo) {
|
|
SAM("ERROR: pdata_buffer->pgo is NULL\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
if (!pdata_buffer->pto) {
|
|
SAM("ERROR: pdata_buffer->pto is NULL\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
kount1 = PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo);
|
|
}
|
|
JOM(12, "ready to send %zd bytes\n", kount1);
|
|
JOM(12, "still to send %li bytes\n", (long int) kount);
|
|
more = kount1;
|
|
if (more > kount)
|
|
more = kount;
|
|
JOM(12, "agreed to send %li bytes from page %i\n",
|
|
more, peasycap->audio_read);
|
|
if (!more)
|
|
break;
|
|
|
|
/*
|
|
* ACCUMULATE DYNAMIC-RANGE INFORMATION
|
|
*/
|
|
p0 = (unsigned char *)pdata_buffer->pgo;
|
|
l0 = 0;
|
|
lm = more/2;
|
|
while (l0 < lm) {
|
|
SUMMER(p0, &peasycap->audio_sample,
|
|
&peasycap->audio_niveau,
|
|
&peasycap->audio_square);
|
|
l0++;
|
|
p0 += 2;
|
|
}
|
|
/*-----------------------------------------------------------*/
|
|
rc = copy_to_user(puserspacebuffer, pdata_buffer->pto, more);
|
|
if (rc) {
|
|
SAM("ERROR: copy_to_user() returned %li\n", rc);
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
*poff += (loff_t)more;
|
|
szret += (size_t)more;
|
|
pdata_buffer->pto += more;
|
|
puserspacebuffer += more;
|
|
kount -= (size_t)more;
|
|
}
|
|
JOM(12, "after read, %i=frag read %i=frag fill\n",
|
|
(peasycap->audio_read / peasycap->audio_pages_per_fragment),
|
|
(peasycap->audio_fill / peasycap->audio_pages_per_fragment));
|
|
if (kount < 0) {
|
|
SAM("MISTAKE: %li=kount %li=szret\n",
|
|
(long int)kount, (long int)szret);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* CALCULATE DYNAMIC RANGE FOR (VAPOURWARE) AUTOMATIC VOLUME CONTROL
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
if (peasycap->audio_sample) {
|
|
below = peasycap->audio_sample;
|
|
above = peasycap->audio_square;
|
|
sdr = signed_div(above, below);
|
|
above = sdr.quotient;
|
|
mean = peasycap->audio_niveau;
|
|
sdr = signed_div(mean, peasycap->audio_sample);
|
|
|
|
JOM(8, "%8lli=mean %8lli=meansquare after %lli samples, =>\n",
|
|
sdr.quotient, above, peasycap->audio_sample);
|
|
|
|
sdr = signed_div(above, 32768);
|
|
JOM(8, "audio dynamic range is roughly %lli\n", sdr.quotient);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
/*
|
|
* UPDATE THE AUDIO CLOCK
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
do_gettimeofday(&timeval);
|
|
if (!peasycap->timeval1.tv_sec) {
|
|
peasycap->audio_bytes = 0;
|
|
peasycap->timeval3 = timeval;
|
|
peasycap->timeval1 = peasycap->timeval3;
|
|
sdr.quotient = 192000;
|
|
} else {
|
|
peasycap->audio_bytes += (long long int) szret;
|
|
below = ((long long int)(1000000)) *
|
|
((long long int)(timeval.tv_sec - peasycap->timeval3.tv_sec)) +
|
|
(long long int)(timeval.tv_usec - peasycap->timeval3.tv_usec);
|
|
above = 1000000 * ((long long int) peasycap->audio_bytes);
|
|
|
|
if (below)
|
|
sdr = signed_div(above, below);
|
|
else
|
|
sdr.quotient = 192000;
|
|
}
|
|
JOM(8, "audio streaming at %lli bytes/second\n", sdr.quotient);
|
|
peasycap->dnbydt = sdr.quotient;
|
|
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
JOM(4, "unlocked easycapdc60_dongle[%i].mutex_audio\n", kd);
|
|
JOM(8, "returning %li\n", (long int)szret);
|
|
return szret;
|
|
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static long easyoss_unlocked_ioctl(struct file *file,
|
|
unsigned int cmd, unsigned long arg)
|
|
{
|
|
struct easycap *peasycap;
|
|
struct usb_device *p;
|
|
int kd;
|
|
|
|
if (!file) {
|
|
SAY("ERROR: file is NULL\n");
|
|
return -ERESTARTSYS;
|
|
}
|
|
peasycap = file->private_data;
|
|
if (!peasycap) {
|
|
SAY("ERROR: peasycap is NULL.\n");
|
|
return -EFAULT;
|
|
}
|
|
if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
|
|
SAY("ERROR: bad peasycap\n");
|
|
return -EFAULT;
|
|
}
|
|
p = peasycap->pusb_device;
|
|
if (!p) {
|
|
SAM("ERROR: peasycap->pusb_device is NULL\n");
|
|
return -EFAULT;
|
|
}
|
|
kd = isdongle(peasycap);
|
|
if (0 <= kd && DONGLE_MANY > kd) {
|
|
if (mutex_lock_interruptible(&easycapdc60_dongle[kd].mutex_audio)) {
|
|
SAY("ERROR: cannot lock "
|
|
"easycapdc60_dongle[%i].mutex_audio\n", kd);
|
|
return -ERESTARTSYS;
|
|
}
|
|
JOM(4, "locked easycapdc60_dongle[%i].mutex_audio\n", kd);
|
|
/*
|
|
* MEANWHILE, easycap_usb_disconnect()
|
|
* MAY HAVE FREED POINTER peasycap,
|
|
* IN WHICH CASE A REPEAT CALL TO isdongle() WILL FAIL.
|
|
* IF NECESSARY, BAIL OUT.
|
|
*/
|
|
if (kd != isdongle(peasycap))
|
|
return -ERESTARTSYS;
|
|
if (!file) {
|
|
SAY("ERROR: file is NULL\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -ERESTARTSYS;
|
|
}
|
|
peasycap = file->private_data;
|
|
if (!peasycap) {
|
|
SAY("ERROR: peasycap is NULL\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -ERESTARTSYS;
|
|
}
|
|
if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) {
|
|
SAY("ERROR: bad peasycap\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
p = peasycap->pusb_device;
|
|
if (!peasycap->pusb_device) {
|
|
SAM("ERROR: peasycap->pusb_device is NULL\n");
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -ERESTARTSYS;
|
|
}
|
|
} else {
|
|
/*
|
|
* IF easycap_usb_disconnect()
|
|
* HAS ALREADY FREED POINTER peasycap BEFORE THE
|
|
* ATTEMPT TO ACQUIRE THE SEMAPHORE,
|
|
* isdongle() WILL HAVE FAILED. BAIL OUT.
|
|
*/
|
|
return -ERESTARTSYS;
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
switch (cmd) {
|
|
case SNDCTL_DSP_GETCAPS: {
|
|
int caps;
|
|
JOM(8, "SNDCTL_DSP_GETCAPS\n");
|
|
|
|
#ifdef UPSAMPLE
|
|
if (peasycap->microphone)
|
|
caps = 0x04400000;
|
|
else
|
|
caps = 0x04400000;
|
|
#else
|
|
if (peasycap->microphone)
|
|
caps = 0x02400000;
|
|
else
|
|
caps = 0x04400000;
|
|
#endif /*UPSAMPLE*/
|
|
|
|
if (copy_to_user((void __user *)arg, &caps, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
break;
|
|
}
|
|
case SNDCTL_DSP_GETFMTS: {
|
|
int incoming;
|
|
JOM(8, "SNDCTL_DSP_GETFMTS\n");
|
|
|
|
#ifdef UPSAMPLE
|
|
if (peasycap->microphone)
|
|
incoming = AFMT_S16_LE;
|
|
else
|
|
incoming = AFMT_S16_LE;
|
|
#else
|
|
if (peasycap->microphone)
|
|
incoming = AFMT_S16_LE;
|
|
else
|
|
incoming = AFMT_S16_LE;
|
|
#endif /*UPSAMPLE*/
|
|
|
|
if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
break;
|
|
}
|
|
case SNDCTL_DSP_SETFMT: {
|
|
int incoming, outgoing;
|
|
JOM(8, "SNDCTL_DSP_SETFMT\n");
|
|
if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
JOM(8, "........... %i=incoming\n", incoming);
|
|
|
|
#ifdef UPSAMPLE
|
|
if (peasycap->microphone)
|
|
outgoing = AFMT_S16_LE;
|
|
else
|
|
outgoing = AFMT_S16_LE;
|
|
#else
|
|
if (peasycap->microphone)
|
|
outgoing = AFMT_S16_LE;
|
|
else
|
|
outgoing = AFMT_S16_LE;
|
|
#endif /*UPSAMPLE*/
|
|
|
|
if (incoming != outgoing) {
|
|
JOM(8, "........... %i=outgoing\n", outgoing);
|
|
JOM(8, " cf. %i=AFMT_S16_LE\n", AFMT_S16_LE);
|
|
JOM(8, " cf. %i=AFMT_U8\n", AFMT_U8);
|
|
if (copy_to_user((void __user *)arg, &outgoing, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EINVAL ;
|
|
}
|
|
break;
|
|
}
|
|
case SNDCTL_DSP_STEREO: {
|
|
int incoming;
|
|
JOM(8, "SNDCTL_DSP_STEREO\n");
|
|
if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
JOM(8, "........... %i=incoming\n", incoming);
|
|
|
|
#ifdef UPSAMPLE
|
|
if (peasycap->microphone)
|
|
incoming = 1;
|
|
else
|
|
incoming = 1;
|
|
#else
|
|
if (peasycap->microphone)
|
|
incoming = 0;
|
|
else
|
|
incoming = 1;
|
|
#endif /*UPSAMPLE*/
|
|
|
|
if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
break;
|
|
}
|
|
case SNDCTL_DSP_SPEED: {
|
|
int incoming;
|
|
JOM(8, "SNDCTL_DSP_SPEED\n");
|
|
if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
JOM(8, "........... %i=incoming\n", incoming);
|
|
|
|
#ifdef UPSAMPLE
|
|
if (peasycap->microphone)
|
|
incoming = 32000;
|
|
else
|
|
incoming = 48000;
|
|
#else
|
|
if (peasycap->microphone)
|
|
incoming = 8000;
|
|
else
|
|
incoming = 48000;
|
|
#endif /*UPSAMPLE*/
|
|
|
|
if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
break;
|
|
}
|
|
case SNDCTL_DSP_GETTRIGGER: {
|
|
int incoming;
|
|
JOM(8, "SNDCTL_DSP_GETTRIGGER\n");
|
|
if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
JOM(8, "........... %i=incoming\n", incoming);
|
|
|
|
incoming = PCM_ENABLE_INPUT;
|
|
if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
break;
|
|
}
|
|
case SNDCTL_DSP_SETTRIGGER: {
|
|
int incoming;
|
|
JOM(8, "SNDCTL_DSP_SETTRIGGER\n");
|
|
if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
JOM(8, "........... %i=incoming\n", incoming);
|
|
JOM(8, "........... cf 0x%x=PCM_ENABLE_INPUT "
|
|
"0x%x=PCM_ENABLE_OUTPUT\n",
|
|
PCM_ENABLE_INPUT, PCM_ENABLE_OUTPUT);
|
|
;
|
|
;
|
|
;
|
|
;
|
|
break;
|
|
}
|
|
case SNDCTL_DSP_GETBLKSIZE: {
|
|
int incoming;
|
|
JOM(8, "SNDCTL_DSP_GETBLKSIZE\n");
|
|
if (copy_from_user(&incoming, (void __user *)arg, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
JOM(8, "........... %i=incoming\n", incoming);
|
|
incoming = peasycap->audio_bytes_per_fragment;
|
|
if (copy_to_user((void __user *)arg, &incoming, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
break;
|
|
}
|
|
case SNDCTL_DSP_GETISPACE: {
|
|
struct audio_buf_info audio_buf_info;
|
|
|
|
JOM(8, "SNDCTL_DSP_GETISPACE\n");
|
|
|
|
audio_buf_info.bytes = peasycap->audio_bytes_per_fragment;
|
|
audio_buf_info.fragments = 1;
|
|
audio_buf_info.fragsize = 0;
|
|
audio_buf_info.fragstotal = 0;
|
|
|
|
if (copy_to_user((void __user *)arg, &audio_buf_info, sizeof(int))) {
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -EFAULT;
|
|
}
|
|
break;
|
|
}
|
|
case 0x00005401:
|
|
case 0x00005402:
|
|
case 0x00005403:
|
|
case 0x00005404:
|
|
case 0x00005405:
|
|
case 0x00005406: {
|
|
JOM(8, "SNDCTL_TMR_...: 0x%08X unsupported\n", cmd);
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
default: {
|
|
JOM(8, "ERROR: unrecognized DSP IOCTL command: 0x%08X\n", cmd);
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return -ENOIOCTLCMD;
|
|
}
|
|
}
|
|
mutex_unlock(&easycapdc60_dongle[kd].mutex_audio);
|
|
return 0;
|
|
}
|
|
/*****************************************************************************/
|
|
|
|
static const struct file_operations easyoss_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = easyoss_open,
|
|
.release = easyoss_release,
|
|
.unlocked_ioctl = easyoss_unlocked_ioctl,
|
|
.read = easyoss_read,
|
|
.llseek = no_llseek,
|
|
};
|
|
struct usb_class_driver easyoss_class = {
|
|
.name = "usb/easyoss%d",
|
|
.fops = &easyoss_fops,
|
|
.minor_base = USB_SKEL_MINOR_BASE,
|
|
};
|
|
/*****************************************************************************/
|