OSS is deprecated yet currently it is reported to be more stable therefore we keep it but make it optional Revert the conditional compilation: add CONFIG_EASYCAP_OSS and kill EASYCAP_NEEDS_ALSA move oss-only code from easycap_sound.c to easycap_sound_oss.c Signed-off-by: Tomas Winkler <tomas.winkler@xxxxxxxxx> create mode 100644 drivers/staging/easycap/easycap_sound_oss.c create mode 100644 drivers/staging/easycap/easycap_sound_oss.c diff --git a/drivers/staging/easycap/Kconfig b/drivers/staging/easycap/Kconfig index b8d44dd..b7a9d49 100644 --- a/drivers/staging/easycap/Kconfig +++ b/drivers/staging/easycap/Kconfig @@ -1,6 +1,6 @@ config EASYCAP tristate "EasyCAP USB ID 05e1:0408 support" - depends on USB && VIDEO_DEV && SND + depends on USB && VIDEO_DEV && SOUND ---help--- This is an integrated audio/video driver for EasyCAP cards with @@ -15,6 +15,18 @@ config EASYCAP To compile this driver as a module, choose M here: the module will be called easycap +config EASYCAP_OSS + bool "OSS (DEPRECATED)" + depends on EASYCAP && SOUND_OSS_CORE + + ---help-- + Say 'Y' if you prefer Open Sound System (OSS) interface + + This will disable Advanced Linux Sound Architecture (ALSA) binding. + + Once binding to ALSA interface will be stable this option will be + removed. + config EASYCAP_DEBUG bool "Enable EasyCAP driver debugging" depends on EASYCAP diff --git a/drivers/staging/easycap/Makefile b/drivers/staging/easycap/Makefile index 226a779..a01ca11 100644 --- a/drivers/staging/easycap/Makefile +++ b/drivers/staging/easycap/Makefile @@ -1,5 +1,10 @@ -easycap-objs := easycap_main.o easycap_low.o easycap_sound.o \ - easycap_ioctl.o easycap_settings.o easycap_testcard.o +easycap-objs := easycap_main.o +easycap-objs += easycap_low.o +easycap-objs += easycap_ioctl.o +easycap-objs += easycap_settings.o +easycap-objs += easycap_testcard.o +easycap-objs += easycap_sound.o +easycap-$(CONFIG_EASYCAP_OSS) += easycap_sound_oss.o obj-$(CONFIG_EASYCAP) += easycap.o @@ -8,5 +13,4 @@ ccflags-y += -DEASYCAP_IS_VIDEODEV_CLIENT ccflags-y += -DEASYCAP_NEEDS_V4L2_DEVICE_H ccflags-y += -DEASYCAP_NEEDS_V4L2_FOPS ccflags-y += -DEASYCAP_NEEDS_UNLOCKED_IOCTL -ccflags-y += -DEASYCAP_NEEDS_ALSA diff --git a/drivers/staging/easycap/easycap.h b/drivers/staging/easycap/easycap.h index d751e75..55ff0d5 100644 --- a/drivers/staging/easycap/easycap.h +++ b/drivers/staging/easycap/easycap.h @@ -59,9 +59,9 @@ */ /*---------------------------------------------------------------------------*/ #undef EASYCAP_TESTCARD -#if (!defined(EASYCAP_NEEDS_ALSA)) +#ifdef CONFIG_EASYCAP_OSS #undef EASYCAP_TESTTONE -#endif /*EASYCAP_NEEDS_ALSA*/ +#endif /* CONFIG_EASYCAP_OSS */ /*---------------------------------------------------------------------------*/ #include <linux/kernel.h> #include <linux/errno.h> @@ -81,7 +81,7 @@ #include <linux/delay.h> #include <linux/types.h> -#if defined(EASYCAP_NEEDS_ALSA) +#ifndef CONFIG_EASYCAP_OSS #include <linux/vmalloc.h> #include <linux/sound.h> #include <sound/core.h> @@ -90,7 +90,7 @@ #include <sound/info.h> #include <sound/initval.h> #include <sound/control.h> -#endif /*EASYCAP_NEEDS_ALSA*/ +#endif /* !CONFIG_EASYCAP_OSS */ /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ #if defined(EASYCAP_IS_VIDEODEV_CLIENT) #include <media/v4l2-dev.h> @@ -445,7 +445,7 @@ __s16 oldaudio; * ALSA */ /*---------------------------------------------------------------------------*/ -#if defined(EASYCAP_NEEDS_ALSA) +#ifndef CONFIG_EASYCAP_OSS struct snd_pcm_hardware alsa_hardware; struct snd_card *psnd_card; struct snd_pcm *psnd_pcm; @@ -453,7 +453,7 @@ __s16 oldaudio; int dma_fill; int dma_next; int dma_read; -#endif /*EASYCAP_NEEDS_ALSA*/ +#endif /* !CONFIG_EASYCAP_OSS */ /*---------------------------------------------------------------------------*/ /* * SOUND PROPERTIES @@ -537,7 +537,7 @@ int adjust_volume(struct easycap *, int); * AUDIO FUNCTION PROTOTYPES */ /*---------------------------------------------------------------------------*/ -#if defined(EASYCAP_NEEDS_ALSA) +#ifndef CONFIG_EASYCAP_OSS int easycap_alsa_probe(struct easycap *); void easycap_alsa_complete(struct urb *); @@ -553,7 +553,7 @@ int easycap_alsa_trigger(struct snd_pcm_substream *, int); snd_pcm_uframes_t easycap_alsa_pointer(struct snd_pcm_substream *); struct page *easycap_alsa_page(struct snd_pcm_substream *, unsigned long); -#else +#else /* CONFIG_EASYCAP_OSS */ void easyoss_complete(struct urb *); ssize_t easyoss_read(struct file *, char __user *, size_t, loff_t *); int easyoss_open(struct inode *, struct file *); @@ -564,7 +564,8 @@ int easyoss_ioctl(struct inode *, struct file *, unsigned int, unsigned long); unsigned int easyoss_poll(struct file *, poll_table *); void easyoss_delete(struct kref *); -#endif /*EASYCAP_NEEDS_ALSA*/ +#endif /* !CONFIG_EASYCAP_OSS */ + int easycap_sound_setup(struct easycap *); int submit_audio_urbs(struct easycap *); int kill_audio_urbs(struct easycap *); @@ -715,13 +716,13 @@ extern struct easycap_format easycap_format[]; extern struct v4l2_queryctrl easycap_control[]; extern struct usb_driver easycap_usb_driver; extern struct easycap_dongle easycapdc60_dongle[]; -#if defined(EASYCAP_NEEDS_ALSA) +#ifndef CONFIG_EASYCAP_OSS extern struct snd_pcm_ops easycap_alsa_ops; extern struct snd_pcm_hardware easycap_pcm_hardware; extern struct snd_card *psnd_card; -#else +#else /* CONFIG_EASYCAP_OSS */ extern struct usb_class_driver easyoss_class; extern const struct file_operations easyoss_fops; -#endif /*EASYCAP_NEEDS_ALSA*/ +#endif /* !CONFIG_EASYCAP_OSS */ #endif /* !__EASYCAP_H__ */ diff --git a/drivers/staging/easycap/easycap_ioctl.c b/drivers/staging/easycap/easycap_ioctl.c index 4389103..6995163 100644 --- a/drivers/staging/easycap/easycap_ioctl.c +++ b/drivers/staging/easycap/easycap_ioctl.c @@ -2517,7 +2517,7 @@ JOM(4, "unlocked easycapdc60_dongle[%i].mutex_video\n", kd); return 0; } /*****************************************************************************/ -#if !defined(EASYCAP_NEEDS_ALSA) +#ifdef CONFIG_EASYCAP_OSS /*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ #if ((defined(EASYCAP_IS_VIDEODEV_CLIENT)) || \ (defined(EASYCAP_NEEDS_UNLOCKED_IOCTL))) @@ -2821,6 +2821,6 @@ default: { mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); return 0; } -#endif /*EASYCAP_NEEDS_ALSA*/ +#endif /* CONFIG_EASYCAP_OSS */ /*****************************************************************************/ diff --git a/drivers/staging/easycap/easycap_main.c b/drivers/staging/easycap/easycap_main.c index cc1460b..d1d7a48 100644 --- a/drivers/staging/easycap/easycap_main.c +++ b/drivers/staging/easycap/easycap_main.c @@ -962,7 +962,7 @@ for (k = 0; k < AUDIO_ISOC_BUFFER_MANY; k++) { JOM(4, "easyoss_delete(): isoc audio buffers freed: %i pages\n", m * (0x01 << AUDIO_ISOC_ORDER)); /*---------------------------------------------------------------------------*/ -#if !defined(EASYCAP_NEEDS_ALSA) +#ifdef CONFIG_EASYCAP_OSS JOM(4, "freeing audio buffers.\n"); gone = 0; for (k = 0; k < peasycap->audio_buffer_page_many; k++) { @@ -974,7 +974,7 @@ for (k = 0; k < peasycap->audio_buffer_page_many; k++) { } } JOM(4, "easyoss_delete(): audio buffers freed: %i pages\n", gone); -#endif /*!EASYCAP_NEEDS_ALSA*/ +#endif /* CONFIG_EASYCAP_OSS */ /*---------------------------------------------------------------------------*/ JOM(4, "freeing easycap structure.\n"); allocation_video_urb = peasycap->allocation_video_urb; @@ -4350,7 +4350,7 @@ case 2: { INIT_LIST_HEAD(&(peasycap->urb_audio_head)); peasycap->purb_audio_head = &(peasycap->urb_audio_head); -#if !defined(EASYCAP_NEEDS_ALSA) +#ifdef CONFIG_EASYCAP_OSS JOM(4, "allocating an audio buffer\n"); JOM(4, ".... scattered over %i pages\n", peasycap->audio_buffer_page_many); @@ -4375,7 +4375,7 @@ case 2: { peasycap->audio_fill = 0; peasycap->audio_read = 0; JOM(4, "allocation of audio buffer done: %i pages\n", k); -#endif /*!EASYCAP_NEEDS_ALSA*/ +#endif /* CONFIG_EASYCAP_OSS */ /*---------------------------------------------------------------------------*/ JOM(4, "allocating %i isoc audio buffers of size %i\n", AUDIO_ISOC_BUFFER_MANY, peasycap->audio_isoc_buffer_size); @@ -4450,11 +4450,11 @@ case 2: { "peasycap->audio_isoc_buffer[.].pgo;\n"); JOM(4, " purb->transfer_buffer_length = %i;\n", peasycap->audio_isoc_buffer_size); -#if defined(EASYCAP_NEEDS_ALSA) - JOM(4, " purb->complete = easycap_alsa_complete;\n"); -#else +#ifdef CONFIG_EASYCAP_OSS JOM(4, " purb->complete = easyoss_complete;\n"); -#endif /*EASYCAP_NEEDS_ALSA*/ +#else /* CONFIG_EASYCAP_OSS */ + JOM(4, " purb->complete = easycap_alsa_complete;\n"); +#endif /* CONFIG_EASYCAP_OSS */ JOM(4, " purb->context = peasycap;\n"); JOM(4, " purb->start_frame = 0;\n"); JOM(4, " purb->number_of_packets = %i;\n", @@ -4477,11 +4477,11 @@ case 2: { purb->transfer_buffer = peasycap->audio_isoc_buffer[k].pgo; purb->transfer_buffer_length = peasycap->audio_isoc_buffer_size; -#if defined(EASYCAP_NEEDS_ALSA) - purb->complete = easycap_alsa_complete; -#else +#ifdef CONFIG_EASYCAP_OSS purb->complete = easyoss_complete; -#endif /*EASYCAP_NEEDS_ALSA*/ +#else /* CONFIG_EASYCAP_OSS */ + purb->complete = easycap_alsa_complete; +#endif /* CONFIG_EASYCAP_OSS */ purb->context = peasycap; purb->start_frame = 0; purb->number_of_packets = peasycap->audio_isoc_framesperdesc; @@ -4504,7 +4504,7 @@ case 2: { * THE AUDIO DEVICE CAN BE REGISTERED NOW, AS IT IS READY. */ /*---------------------------------------------------------------------------*/ -#if defined(EASYCAP_NEEDS_ALSA) +#ifndef CONFIG_EASYCAP_OSS JOM(4, "initializing ALSA card\n"); rc = easycap_alsa_probe(peasycap); @@ -4518,7 +4518,7 @@ case 2: { (peasycap->registered_audio)++; } -#else /*EASYCAP_NEEDS_ALSA*/ +#else /* CONFIG_EASYCAP_OSS */ rc = usb_register_dev(pusb_interface, &easyoss_class); if (0 != rc) { SAY("ERROR: usb_register_dev() failed\n"); @@ -4536,7 +4536,7 @@ case 2: { */ /*---------------------------------------------------------------------------*/ SAM("easyoss attached to minor #%d\n", pusb_interface->minor); -#endif /*EASYCAP_NEEDS_ALSA*/ +#endif /* CONFIG_EASYCAP_OSS */ break; } @@ -4774,7 +4774,7 @@ case 2: { JOM(4, "locked easycapdc60_dongle[%i].mutex_audio\n", kd); } else SAY("ERROR: %i=kd is bad: cannot lock dongle\n", kd); -#if defined(EASYCAP_NEEDS_ALSA) +#ifndef CONFIG_EASYCAP_OSS @@ -4786,12 +4786,12 @@ case 2: { } -#else /*EASYCAP_NEEDS_ALSA*/ +#else /* CONFIG_EASYCAP_OSS */ usb_deregister_dev(pusb_interface, &easyoss_class); (peasycap->registered_audio)--; JOM(4, "intf[%i]: usb_deregister_dev()\n", bInterfaceNumber); SAM("easyoss detached from minor #%d\n", minor); -#endif /*EASYCAP_NEEDS_ALSA*/ +#endif /* CONFIG_EASYCAP_OSS */ if (0 <= kd && DONGLE_MANY > kd) { mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); diff --git a/drivers/staging/easycap/easycap_sound.c b/drivers/staging/easycap/easycap_sound.c index 05d9eed..07dd7aa 100644 --- a/drivers/staging/easycap/easycap_sound.c +++ b/drivers/staging/easycap/easycap_sound.c @@ -30,7 +30,7 @@ #include "easycap.h" -#if defined(EASYCAP_NEEDS_ALSA) +#ifndef CONFIG_EASYCAP_OSS /*--------------------------------------------------------------------------*/ /* * PARAMETERS USED WHEN REGISTERING THE AUDIO INTERFACE @@ -669,707 +669,7 @@ return vmalloc_to_page(pss->runtime->dma_area + offset); } /*****************************************************************************/ -#else /*!EASYCAP_NEEDS_ALSA*/ - -/*****************************************************************************/ -/**************************** **************************/ -/**************************** Open Sound System **************************/ -/**************************** **************************/ -/*****************************************************************************/ -/*--------------------------------------------------------------------------*/ -/* - * PARAMETERS USED WHEN REGISTERING THE AUDIO INTERFACE - */ -/*--------------------------------------------------------------------------*/ -const struct file_operations easyoss_fops = { - .owner = THIS_MODULE, - .open = easyoss_open, - .release = easyoss_release, -#if defined(EASYCAP_NEEDS_UNLOCKED_IOCTL) - .unlocked_ioctl = easyoss_ioctl_noinode, -#else - .ioctl = easyoss_ioctl, -#endif /*EASYCAP_NEEDS_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, -}; -/*****************************************************************************/ -/*---------------------------------------------------------------------------*/ -/* - * ON COMPLETION OF AN AUDIO URB ITS DATA IS COPIED TO THE AUDIO BUFFERS - * PROVIDED peasycap->audio_idle IS ZERO. REGARDLESS OF THIS BEING TRUE, - * IT IS RESUBMITTED PROVIDED peasycap->audio_isoc_streaming IS NOT ZERO. - */ -/*---------------------------------------------------------------------------*/ -void -easyoss_complete(struct urb *purb) -{ -struct easycap *peasycap; -struct data_buffer *paudio_buffer; -__u8 *p1, *p2; -__s16 s16; -int i, j, more, much, leap, rc; -#if defined(UPSAMPLE) -int k; -__s16 oldaudio, newaudio, delta; -#endif /*UPSAMPLE*/ - -JOT(16, "\n"); - -if (NULL == purb) { - SAY("ERROR: purb is NULL\n"); - return; -} -peasycap = purb->context; -if (NULL == peasycap) { - SAY("ERROR: peasycap is NULL\n"); - return; -} -if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { - SAY("ERROR: bad peasycap\n"); - return; -} -much = 0; -if (peasycap->audio_idle) { - JOM(16, "%i=audio_idle %i=audio_isoc_streaming\n", - peasycap->audio_idle, peasycap->audio_isoc_streaming); - if (peasycap->audio_isoc_streaming) { - rc = usb_submit_urb(purb, GFP_ATOMIC); - if (rc) { - if (-ENODEV != rc && -ENOENT != rc) { - SAM("ERROR: while %i=audio_idle, " - "usb_submit_urb() failed with rc: -%s: %d\n", - peasycap->audio_idle, - strerror(rc), rc); - } - } - } -return; -} -/*---------------------------------------------------------------------------*/ -if (purb->status) { - if ((-ESHUTDOWN == purb->status) || (-ENOENT == purb->status)) { - JOM(16, "urb status -ESHUTDOWN or -ENOENT\n"); - return; - } - SAM("ERROR: non-zero urb status: -%s: %d\n", - strerror(purb->status), purb->status); - goto resubmit; -} -/*---------------------------------------------------------------------------*/ -/* - * PROCEED HERE WHEN NO ERROR - */ -/*---------------------------------------------------------------------------*/ -#if defined(UPSAMPLE) -oldaudio = peasycap->oldaudio; -#endif /*UPSAMPLE*/ - -for (i = 0; i < purb->number_of_packets; i++) { - if (!purb->iso_frame_desc[i].status) { - - SAM("-%s\n", strerror(purb->iso_frame_desc[i].status)); - - more = purb->iso_frame_desc[i].actual_length; - -#if defined(TESTTONE) - if (!more) - more = purb->iso_frame_desc[i].length; -#endif - - if (!more) - peasycap->audio_mt++; - else { - if (peasycap->audio_mt) { - JOM(12, "%4i empty audio urb frames\n", - peasycap->audio_mt); - peasycap->audio_mt = 0; - } - - p1 = (__u8 *)(purb->transfer_buffer + - purb->iso_frame_desc[i].offset); - - leap = 0; - p1 += leap; - more -= leap; -/*---------------------------------------------------------------------------*/ -/* - * COPY more BYTES FROM ISOC BUFFER TO AUDIO BUFFER, - * CONVERTING 8-BIT MONO TO 16-BIT SIGNED LITTLE-ENDIAN SAMPLES IF NECESSARY - */ -/*---------------------------------------------------------------------------*/ - while (more) { - if (0 > more) { - SAM("MISTAKE: more is negative\n"); - return; - } - if (peasycap->audio_buffer_page_many <= - peasycap->audio_fill) { - SAM("ERROR: bad " - "peasycap->audio_fill\n"); - return; - } - - paudio_buffer = &peasycap->audio_buffer - [peasycap->audio_fill]; - if (PAGE_SIZE < (paudio_buffer->pto - - paudio_buffer->pgo)) { - SAM("ERROR: bad paudio_buffer->pto\n"); - return; - } - if (PAGE_SIZE == (paudio_buffer->pto - - paudio_buffer->pgo)) { - -#if defined(TESTTONE) - easyoss_testtone(peasycap, - peasycap->audio_fill); -#endif /*TESTTONE*/ - - paudio_buffer->pto = - paudio_buffer->pgo; - (peasycap->audio_fill)++; - if (peasycap-> - audio_buffer_page_many <= - peasycap->audio_fill) - peasycap->audio_fill = 0; - - JOM(8, "bumped peasycap->" - "audio_fill to %i\n", - peasycap->audio_fill); - - paudio_buffer = &peasycap-> - audio_buffer - [peasycap->audio_fill]; - paudio_buffer->pto = - paudio_buffer->pgo; - - if (!(peasycap->audio_fill % - peasycap-> - audio_pages_per_fragment)) { - JOM(12, "wakeup call on wq_" - "audio, %i=frag reading %i" - "=fragment fill\n", - (peasycap->audio_read / - peasycap-> - audio_pages_per_fragment), - (peasycap->audio_fill / - peasycap-> - audio_pages_per_fragment)); - wake_up_interruptible - (&(peasycap->wq_audio)); - } - } - - much = PAGE_SIZE - (int)(paudio_buffer->pto - - paudio_buffer->pgo); - - if (false == peasycap->microphone) { - if (much > more) - much = more; - - memcpy(paudio_buffer->pto, p1, much); - p1 += much; - more -= much; - } else { -#if defined(UPSAMPLE) - if (much % 16) - JOM(8, "MISTAKE? much" - " is not divisible by 16\n"); - if (much > (16 * - more)) - much = 16 * - more; - p2 = (__u8 *)paudio_buffer->pto; - - for (j = 0; j < (much/16); j++) { - newaudio = ((int) *p1) - 128; - newaudio = 128 * - newaudio; - - delta = (newaudio - oldaudio) - / 4; - s16 = oldaudio + delta; - - for (k = 0; k < 4; k++) { - *p2 = (0x00FF & s16); - *(p2 + 1) = (0xFF00 & - s16) >> 8; - p2 += 2; - *p2 = (0x00FF & s16); - *(p2 + 1) = (0xFF00 & - s16) >> 8; - p2 += 2; - - s16 += delta; - } - p1++; - more--; - oldaudio = s16; - } -#else /*!UPSAMPLE*/ - if (much > (2 * more)) - much = 2 * more; - p2 = (__u8 *)paudio_buffer->pto; - - for (j = 0; j < (much / 2); j++) { - s16 = ((int) *p1) - 128; - s16 = 128 * - s16; - *p2 = (0x00FF & s16); - *(p2 + 1) = (0xFF00 & s16) >> - 8; - p1++; p2 += 2; - more--; - } -#endif /*UPSAMPLE*/ - } - (paudio_buffer->pto) += much; - } - } - } else { - JOM(12, "discarding audio samples because " - "%i=purb->iso_frame_desc[i].status\n", - purb->iso_frame_desc[i].status); - } - -#if defined(UPSAMPLE) -peasycap->oldaudio = oldaudio; -#endif /*UPSAMPLE*/ - -} -/*---------------------------------------------------------------------------*/ -/* - * RESUBMIT THIS URB - */ -/*---------------------------------------------------------------------------*/ -resubmit: -if (peasycap->audio_isoc_streaming) { - rc = usb_submit_urb(purb, GFP_ATOMIC); - if (0 != rc) { - if (-ENODEV != rc && -ENOENT != rc) { - SAM("ERROR: while %i=audio_idle, " - "usb_submit_urb() failed " - "with rc: -%s: %d\n", peasycap->audio_idle, - strerror(rc), rc); - } - } -} -return; -} -/*****************************************************************************/ -/*---------------------------------------------------------------------------*/ -/* - * THE AUDIO URBS ARE SUBMITTED AT THIS EARLY STAGE SO THAT IT IS POSSIBLE TO - * STREAM FROM /dev/easyoss1 WITH SIMPLE PROGRAMS SUCH AS cat WHICH DO NOT - * HAVE AN IOCTL INTERFACE. - */ -/*---------------------------------------------------------------------------*/ -int -easyoss_open(struct inode *inode, struct file *file) -{ -struct usb_interface *pusb_interface; -struct easycap *peasycap; -int subminor; -/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ -#if defined(EASYCAP_IS_VIDEODEV_CLIENT) -#if defined(EASYCAP_NEEDS_V4L2_DEVICE_H) -struct v4l2_device *pv4l2_device; -#endif /*EASYCAP_NEEDS_V4L2_DEVICE_H*/ -#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ -/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ - -JOT(4, "begins\n"); - -subminor = iminor(inode); - -pusb_interface = usb_find_interface(&easycap_usb_driver, subminor); -if (NULL == pusb_interface) { - SAY("ERROR: pusb_interface is NULL\n"); - SAY("ending unsuccessfully\n"); - return -1; -} -peasycap = usb_get_intfdata(pusb_interface); -if (NULL == peasycap) { - SAY("ERROR: peasycap is NULL\n"); - SAY("ending unsuccessfully\n"); - return -1; -} -/*---------------------------------------------------------------------------*/ -#if (!defined(EASYCAP_IS_VIDEODEV_CLIENT)) -# -/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ -#else -#if defined(EASYCAP_NEEDS_V4L2_DEVICE_H) -/*---------------------------------------------------------------------------*/ -/* - * SOME VERSIONS OF THE videodev MODULE OVERWRITE THE DATA WHICH HAS - * BEEN WRITTEN BY THE CALL TO usb_set_intfdata() IN easycap_usb_probe(), - * REPLACING IT WITH A POINTER TO THE EMBEDDED v4l2_device STRUCTURE. - * TO DETECT THIS, THE STRING IN THE easycap.telltale[] BUFFER IS CHECKED. -*/ -/*---------------------------------------------------------------------------*/ -if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { - pv4l2_device = usb_get_intfdata(pusb_interface); - if ((struct v4l2_device *)NULL == pv4l2_device) { - SAY("ERROR: pv4l2_device is NULL\n"); - return -EFAULT; - } - peasycap = (struct easycap *) - container_of(pv4l2_device, struct easycap, v4l2_device); -} -#endif /*EASYCAP_NEEDS_V4L2_DEVICE_H*/ -# -#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ -/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ -/*---------------------------------------------------------------------------*/ -if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { - SAY("ERROR: bad peasycap: 0x%08lX\n", (unsigned long int) peasycap); - return -EFAULT; -} -/*---------------------------------------------------------------------------*/ - -file->private_data = peasycap; - -if (0 != easycap_sound_setup(peasycap)) { - ; - ; -} -return 0; -} -/*****************************************************************************/ -int -easyoss_release(struct inode *inode, struct file *file) -{ -struct easycap *peasycap; - -JOT(4, "begins\n"); - -peasycap = file->private_data; -if (NULL == peasycap) { - SAY("ERROR: peasycap is NULL.\n"); - return -EFAULT; -} -if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { - SAY("ERROR: bad peasycap: 0x%08lX\n", (unsigned long int) peasycap); - return -EFAULT; -} -if (0 != kill_audio_urbs(peasycap)) { - SAM("ERROR: kill_audio_urbs() failed\n"); - return -EFAULT; -} -JOM(4, "ending successfully\n"); -return 0; -} -/*****************************************************************************/ -ssize_t -easyoss_read(struct file *file, char __user *puserspacebuffer, - size_t kount, loff_t *poff) -{ -struct timeval timeval; -long long int above, below, mean; -struct signed_div_result sdr; -unsigned char *p0; -long int kount1, more, rc, l0, lm; -int fragment, kd; -struct easycap *peasycap; -struct data_buffer *pdata_buffer; -size_t szret; - -/*---------------------------------------------------------------------------*/ -/* - * DO A BLOCKING READ TO TRANSFER DATA TO USER SPACE. - * - ****************************************************************************** - ***** N.B. IF THIS FUNCTION RETURNS 0, NOTHING IS SEEN IN USER SPACE. ****** - ***** THIS CONDITION SIGNIFIES END-OF-FILE. ****** - ****************************************************************************** - */ -/*---------------------------------------------------------------------------*/ - -JOT(8, "%5i=kount %5i=*poff\n", (int)kount, (int)(*poff)); - -if (NULL == file) { - SAY("ERROR: file is NULL\n"); - return -ERESTARTSYS; -} -peasycap = file->private_data; -if (NULL == peasycap) { - SAY("ERROR in easyoss_read(): peasycap is NULL\n"); - return -EFAULT; -} -if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { - SAY("ERROR: bad peasycap: 0x%08lX\n", (unsigned long int) peasycap); - return -EFAULT; -} -if (NULL == peasycap->pusb_device) { - SAY("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 (NULL == file) { - SAY("ERROR: file is NULL\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); - return -ERESTARTSYS; - } - peasycap = file->private_data; - if (NULL == 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: 0x%08lX\n", - (unsigned long int) peasycap); - mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); - return -ERESTARTSYS; - } - if (NULL == 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; -} -/*---------------------------------------------------------------------------*/ -if (file->f_flags & O_NONBLOCK) - JOT(16, "NONBLOCK kount=%i, *poff=%i\n", (int)kount, (int)(*poff)); -else - JOT(8, "BLOCKING kount=%i, *poff=%i\n", (int)kount, (int)(*poff)); - -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 ((struct data_buffer *)NULL == pdata_buffer) { - SAM("ERROR: pdata_buffer is NULL\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); - return -EFAULT; -} -JOM(12, "before wait, %i=frag read %i=frag fill\n", - (peasycap->audio_read / peasycap->audio_pages_per_fragment), - (peasycap->audio_fill / peasycap->audio_pages_per_fragment)); -fragment = (peasycap->audio_read / peasycap->audio_pages_per_fragment); -while ((fragment == (peasycap->audio_fill / - peasycap->audio_pages_per_fragment)) || - (0 == (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo)))) { - if (file->f_flags & O_NONBLOCK) { - JOM(16, "returning -EAGAIN as instructed\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); - return -EAGAIN; - } - rc = wait_event_interruptible(peasycap->wq_audio, - (peasycap->audio_idle || peasycap->audio_eof || - ((fragment != (peasycap->audio_fill / - peasycap->audio_pages_per_fragment)) && - (0 < (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo)))))); - if (0 != rc) { - SAM("aborted by signal\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); - return -ERESTARTSYS; - } - if (peasycap->audio_eof) { - JOM(8, "returning 0 because %i=audio_eof\n", - peasycap->audio_eof); - kill_audio_urbs(peasycap); - mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); - return 0; - } - if (peasycap->audio_idle) { - 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 (NULL == pdata_buffer->pgo) { - SAM("ERROR: pdata_buffer->pgo is NULL\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); - return -EFAULT; - } - if (NULL == 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 ((struct data_buffer *)NULL == pdata_buffer) { - SAM("ERROR: pdata_buffer is NULL\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); - return -EFAULT; - } - if (NULL == pdata_buffer->pgo) { - SAM("ERROR: pdata_buffer->pgo is NULL\n"); - mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); - return -EFAULT; - } - if (NULL == 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 %li bytes\n", (long int) 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 (0 != 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; -} -/*****************************************************************************/ - -#endif /*!EASYCAP_NEEDS_ALSA*/ +#endif /*! CONFIG_EASYCAP_OSS */ /*****************************************************************************/ /*****************************************************************************/ @@ -1484,11 +784,11 @@ if (!peasycap->audio_isoc_streaming) { peasycap->audio_isoc_buffer[isbuf].pgo; purb->transfer_buffer_length = peasycap->audio_isoc_buffer_size; -#if defined(EASYCAP_NEEDS_ALSA) - purb->complete = easycap_alsa_complete; -#else +#ifdef CONFIG_EASYCAP_OSS purb->complete = easyoss_complete; -#endif /*EASYCAP_NEEDS_ALSA*/ +#else /* CONFIG_EASYCAP_OSS */ + purb->complete = easycap_alsa_complete; +#endif /* CONFIG_EASYCAP_OSS */ purb->context = peasycap; purb->start_frame = 0; purb->number_of_packets = diff --git a/drivers/staging/easycap/easycap_sound_oss.c b/drivers/staging/easycap/easycap_sound_oss.c new file mode 100644 index 0000000..3f85cc3 --- /dev/null +++ b/drivers/staging/easycap/easycap_sound_oss.c @@ -0,0 +1,730 @@ +/****************************************************************************** +* * +* easycap_sound.c * +* * +* Audio driver for EasyCAP USB2.0 Video Capture Device DC60 * +* * +* * +******************************************************************************/ +/* + * + * Copyright (C) 2010 R.M. Thomas <rmthomas@xxxxxxxxxxx> + * + * + * This is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * The software is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this software; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * +*/ +/*****************************************************************************/ + +#include "easycap.h" + +/*****************************************************************************/ +/**************************** **************************/ +/**************************** Open Sound System **************************/ +/**************************** **************************/ +/*****************************************************************************/ +/*--------------------------------------------------------------------------*/ +/* + * PARAMETERS USED WHEN REGISTERING THE AUDIO INTERFACE + */ +/*--------------------------------------------------------------------------*/ +const struct file_operations easyoss_fops = { + .owner = THIS_MODULE, + .open = easyoss_open, + .release = easyoss_release, +#if defined(EASYCAP_NEEDS_UNLOCKED_IOCTL) + .unlocked_ioctl = easyoss_ioctl_noinode, +#else + .ioctl = easyoss_ioctl, +#endif /*EASYCAP_NEEDS_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, +}; +/*****************************************************************************/ +/*---------------------------------------------------------------------------*/ +/* + * ON COMPLETION OF AN AUDIO URB ITS DATA IS COPIED TO THE AUDIO BUFFERS + * PROVIDED peasycap->audio_idle IS ZERO. REGARDLESS OF THIS BEING TRUE, + * IT IS RESUBMITTED PROVIDED peasycap->audio_isoc_streaming IS NOT ZERO. + */ +/*---------------------------------------------------------------------------*/ +void +easyoss_complete(struct urb *purb) +{ +struct easycap *peasycap; +struct data_buffer *paudio_buffer; +__u8 *p1, *p2; +__s16 s16; +int i, j, more, much, leap, rc; +#if defined(UPSAMPLE) +int k; +__s16 oldaudio, newaudio, delta; +#endif /*UPSAMPLE*/ + +JOT(16, "\n"); + +if (NULL == purb) { + SAY("ERROR: purb is NULL\n"); + return; +} +peasycap = purb->context; +if (NULL == peasycap) { + SAY("ERROR: peasycap is NULL\n"); + return; +} +if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { + SAY("ERROR: bad peasycap\n"); + return; +} +much = 0; +if (peasycap->audio_idle) { + JOM(16, "%i=audio_idle %i=audio_isoc_streaming\n", + peasycap->audio_idle, peasycap->audio_isoc_streaming); + if (peasycap->audio_isoc_streaming) { + rc = usb_submit_urb(purb, GFP_ATOMIC); + if (rc) { + if (-ENODEV != rc && -ENOENT != rc) { + SAM("ERROR: while %i=audio_idle, " + "usb_submit_urb() failed with rc: -%s: %d\n", + peasycap->audio_idle, + strerror(rc), rc); + } + } + } +return; +} +/*---------------------------------------------------------------------------*/ +if (purb->status) { + if ((-ESHUTDOWN == purb->status) || (-ENOENT == purb->status)) { + JOM(16, "urb status -ESHUTDOWN or -ENOENT\n"); + return; + } + SAM("ERROR: non-zero urb status: -%s: %d\n", + strerror(purb->status), purb->status); + goto resubmit; +} +/*---------------------------------------------------------------------------*/ +/* + * PROCEED HERE WHEN NO ERROR + */ +/*---------------------------------------------------------------------------*/ +#if defined(UPSAMPLE) +oldaudio = peasycap->oldaudio; +#endif /*UPSAMPLE*/ + +for (i = 0; i < purb->number_of_packets; i++) { + if (!purb->iso_frame_desc[i].status) { + + SAM("-%s\n", strerror(purb->iso_frame_desc[i].status)); + + more = purb->iso_frame_desc[i].actual_length; + +#if defined(TESTTONE) + if (!more) + more = purb->iso_frame_desc[i].length; +#endif + + if (!more) + peasycap->audio_mt++; + else { + if (peasycap->audio_mt) { + JOM(12, "%4i empty audio urb frames\n", + peasycap->audio_mt); + peasycap->audio_mt = 0; + } + + p1 = (__u8 *)(purb->transfer_buffer + + purb->iso_frame_desc[i].offset); + + leap = 0; + p1 += leap; + more -= leap; +/*---------------------------------------------------------------------------*/ +/* + * COPY more BYTES FROM ISOC BUFFER TO AUDIO BUFFER, + * CONVERTING 8-BIT MONO TO 16-BIT SIGNED LITTLE-ENDIAN SAMPLES IF NECESSARY + */ +/*---------------------------------------------------------------------------*/ + while (more) { + if (0 > more) { + SAM("MISTAKE: more is negative\n"); + return; + } + if (peasycap->audio_buffer_page_many <= + peasycap->audio_fill) { + SAM("ERROR: bad " + "peasycap->audio_fill\n"); + return; + } + + paudio_buffer = &peasycap->audio_buffer + [peasycap->audio_fill]; + if (PAGE_SIZE < (paudio_buffer->pto - + paudio_buffer->pgo)) { + SAM("ERROR: bad paudio_buffer->pto\n"); + return; + } + if (PAGE_SIZE == (paudio_buffer->pto - + paudio_buffer->pgo)) { + +#if defined(TESTTONE) + easyoss_testtone(peasycap, + peasycap->audio_fill); +#endif /*TESTTONE*/ + + paudio_buffer->pto = + paudio_buffer->pgo; + (peasycap->audio_fill)++; + if (peasycap-> + audio_buffer_page_many <= + peasycap->audio_fill) + peasycap->audio_fill = 0; + + JOM(8, "bumped peasycap->" + "audio_fill to %i\n", + peasycap->audio_fill); + + paudio_buffer = &peasycap-> + audio_buffer + [peasycap->audio_fill]; + paudio_buffer->pto = + paudio_buffer->pgo; + + if (!(peasycap->audio_fill % + peasycap-> + audio_pages_per_fragment)) { + JOM(12, "wakeup call on wq_" + "audio, %i=frag reading %i" + "=fragment fill\n", + (peasycap->audio_read / + peasycap-> + audio_pages_per_fragment), + (peasycap->audio_fill / + peasycap-> + audio_pages_per_fragment)); + wake_up_interruptible + (&(peasycap->wq_audio)); + } + } + + much = PAGE_SIZE - (int)(paudio_buffer->pto - + paudio_buffer->pgo); + + if (false == peasycap->microphone) { + if (much > more) + much = more; + + memcpy(paudio_buffer->pto, p1, much); + p1 += much; + more -= much; + } else { +#if defined(UPSAMPLE) + if (much % 16) + JOM(8, "MISTAKE? much" + " is not divisible by 16\n"); + if (much > (16 * + more)) + much = 16 * + more; + p2 = (__u8 *)paudio_buffer->pto; + + for (j = 0; j < (much/16); j++) { + newaudio = ((int) *p1) - 128; + newaudio = 128 * + newaudio; + + delta = (newaudio - oldaudio) + / 4; + s16 = oldaudio + delta; + + for (k = 0; k < 4; k++) { + *p2 = (0x00FF & s16); + *(p2 + 1) = (0xFF00 & + s16) >> 8; + p2 += 2; + *p2 = (0x00FF & s16); + *(p2 + 1) = (0xFF00 & + s16) >> 8; + p2 += 2; + + s16 += delta; + } + p1++; + more--; + oldaudio = s16; + } +#else /*!UPSAMPLE*/ + if (much > (2 * more)) + much = 2 * more; + p2 = (__u8 *)paudio_buffer->pto; + + for (j = 0; j < (much / 2); j++) { + s16 = ((int) *p1) - 128; + s16 = 128 * + s16; + *p2 = (0x00FF & s16); + *(p2 + 1) = (0xFF00 & s16) >> + 8; + p1++; p2 += 2; + more--; + } +#endif /*UPSAMPLE*/ + } + (paudio_buffer->pto) += much; + } + } + } else { + JOM(12, "discarding audio samples because " + "%i=purb->iso_frame_desc[i].status\n", + purb->iso_frame_desc[i].status); + } + +#if defined(UPSAMPLE) +peasycap->oldaudio = oldaudio; +#endif /*UPSAMPLE*/ + +} +/*---------------------------------------------------------------------------*/ +/* + * RESUBMIT THIS URB + */ +/*---------------------------------------------------------------------------*/ +resubmit: +if (peasycap->audio_isoc_streaming) { + rc = usb_submit_urb(purb, GFP_ATOMIC); + if (0 != rc) { + if (-ENODEV != rc && -ENOENT != rc) { + SAM("ERROR: while %i=audio_idle, " + "usb_submit_urb() failed " + "with rc: -%s: %d\n", peasycap->audio_idle, + strerror(rc), rc); + } + } +} +return; +} +/*****************************************************************************/ +/*---------------------------------------------------------------------------*/ +/* + * THE AUDIO URBS ARE SUBMITTED AT THIS EARLY STAGE SO THAT IT IS POSSIBLE TO + * STREAM FROM /dev/easyoss1 WITH SIMPLE PROGRAMS SUCH AS cat WHICH DO NOT + * HAVE AN IOCTL INTERFACE. + */ +/*---------------------------------------------------------------------------*/ +int +easyoss_open(struct inode *inode, struct file *file) +{ +struct usb_interface *pusb_interface; +struct easycap *peasycap; +int subminor; +/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ +#if defined(EASYCAP_IS_VIDEODEV_CLIENT) +#if defined(EASYCAP_NEEDS_V4L2_DEVICE_H) +struct v4l2_device *pv4l2_device; +#endif /*EASYCAP_NEEDS_V4L2_DEVICE_H*/ +#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ +/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ + +JOT(4, "begins\n"); + +subminor = iminor(inode); + +pusb_interface = usb_find_interface(&easycap_usb_driver, subminor); +if (NULL == pusb_interface) { + SAY("ERROR: pusb_interface is NULL\n"); + SAY("ending unsuccessfully\n"); + return -1; +} +peasycap = usb_get_intfdata(pusb_interface); +if (NULL == peasycap) { + SAY("ERROR: peasycap is NULL\n"); + SAY("ending unsuccessfully\n"); + return -1; +} +/*---------------------------------------------------------------------------*/ +#if (!defined(EASYCAP_IS_VIDEODEV_CLIENT)) +# +/*vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv*/ +#else +#if defined(EASYCAP_NEEDS_V4L2_DEVICE_H) +/*---------------------------------------------------------------------------*/ +/* + * SOME VERSIONS OF THE videodev MODULE OVERWRITE THE DATA WHICH HAS + * BEEN WRITTEN BY THE CALL TO usb_set_intfdata() IN easycap_usb_probe(), + * REPLACING IT WITH A POINTER TO THE EMBEDDED v4l2_device STRUCTURE. + * TO DETECT THIS, THE STRING IN THE easycap.telltale[] BUFFER IS CHECKED. +*/ +/*---------------------------------------------------------------------------*/ +if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { + pv4l2_device = usb_get_intfdata(pusb_interface); + if ((struct v4l2_device *)NULL == pv4l2_device) { + SAY("ERROR: pv4l2_device is NULL\n"); + return -EFAULT; + } + peasycap = (struct easycap *) + container_of(pv4l2_device, struct easycap, v4l2_device); +} +#endif /*EASYCAP_NEEDS_V4L2_DEVICE_H*/ +# +#endif /*EASYCAP_IS_VIDEODEV_CLIENT*/ +/*^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^*/ +/*---------------------------------------------------------------------------*/ +if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { + SAY("ERROR: bad peasycap: 0x%08lX\n", (unsigned long int) peasycap); + return -EFAULT; +} +/*---------------------------------------------------------------------------*/ + +file->private_data = peasycap; + +if (0 != easycap_sound_setup(peasycap)) { + ; + ; +} +return 0; +} +/*****************************************************************************/ +int +easyoss_release(struct inode *inode, struct file *file) +{ +struct easycap *peasycap; + +JOT(4, "begins\n"); + +peasycap = file->private_data; +if (NULL == peasycap) { + SAY("ERROR: peasycap is NULL.\n"); + return -EFAULT; +} +if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { + SAY("ERROR: bad peasycap: 0x%08lX\n", (unsigned long int) peasycap); + return -EFAULT; +} +if (0 != kill_audio_urbs(peasycap)) { + SAM("ERROR: kill_audio_urbs() failed\n"); + return -EFAULT; +} +JOM(4, "ending successfully\n"); +return 0; +} +/*****************************************************************************/ +ssize_t +easyoss_read(struct file *file, char __user *puserspacebuffer, + size_t kount, loff_t *poff) +{ +struct timeval timeval; +long long int above, below, mean; +struct signed_div_result sdr; +unsigned char *p0; +long int kount1, more, rc, l0, lm; +int fragment, kd; +struct easycap *peasycap; +struct data_buffer *pdata_buffer; +size_t szret; + +/*---------------------------------------------------------------------------*/ +/* + * DO A BLOCKING READ TO TRANSFER DATA TO USER SPACE. + * + ****************************************************************************** + ***** N.B. IF THIS FUNCTION RETURNS 0, NOTHING IS SEEN IN USER SPACE. ****** + ***** THIS CONDITION SIGNIFIES END-OF-FILE. ****** + ****************************************************************************** + */ +/*---------------------------------------------------------------------------*/ + +JOT(8, "%5i=kount %5i=*poff\n", (int)kount, (int)(*poff)); + +if (NULL == file) { + SAY("ERROR: file is NULL\n"); + return -ERESTARTSYS; +} +peasycap = file->private_data; +if (NULL == peasycap) { + SAY("ERROR in easyoss_read(): peasycap is NULL\n"); + return -EFAULT; +} +if (memcmp(&peasycap->telltale[0], TELLTALE, strlen(TELLTALE))) { + SAY("ERROR: bad peasycap: 0x%08lX\n", (unsigned long int) peasycap); + return -EFAULT; +} +if (NULL == peasycap->pusb_device) { + SAY("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 (NULL == file) { + SAY("ERROR: file is NULL\n"); + mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); + return -ERESTARTSYS; + } + peasycap = file->private_data; + if (NULL == 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: 0x%08lX\n", + (unsigned long int) peasycap); + mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); + return -ERESTARTSYS; + } + if (NULL == 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; +} +/*---------------------------------------------------------------------------*/ +if (file->f_flags & O_NONBLOCK) + JOT(16, "NONBLOCK kount=%i, *poff=%i\n", (int)kount, (int)(*poff)); +else + JOT(8, "BLOCKING kount=%i, *poff=%i\n", (int)kount, (int)(*poff)); + +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 ((struct data_buffer *)NULL == pdata_buffer) { + SAM("ERROR: pdata_buffer is NULL\n"); + mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); + return -EFAULT; +} +JOM(12, "before wait, %i=frag read %i=frag fill\n", + (peasycap->audio_read / peasycap->audio_pages_per_fragment), + (peasycap->audio_fill / peasycap->audio_pages_per_fragment)); +fragment = (peasycap->audio_read / peasycap->audio_pages_per_fragment); +while ((fragment == (peasycap->audio_fill / + peasycap->audio_pages_per_fragment)) || + (0 == (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo)))) { + if (file->f_flags & O_NONBLOCK) { + JOM(16, "returning -EAGAIN as instructed\n"); + mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); + return -EAGAIN; + } + rc = wait_event_interruptible(peasycap->wq_audio, + (peasycap->audio_idle || peasycap->audio_eof || + ((fragment != (peasycap->audio_fill / + peasycap->audio_pages_per_fragment)) && + (0 < (PAGE_SIZE - (pdata_buffer->pto - pdata_buffer->pgo)))))); + if (0 != rc) { + SAM("aborted by signal\n"); + mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); + return -ERESTARTSYS; + } + if (peasycap->audio_eof) { + JOM(8, "returning 0 because %i=audio_eof\n", + peasycap->audio_eof); + kill_audio_urbs(peasycap); + mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); + return 0; + } + if (peasycap->audio_idle) { + 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 (NULL == pdata_buffer->pgo) { + SAM("ERROR: pdata_buffer->pgo is NULL\n"); + mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); + return -EFAULT; + } + if (NULL == 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 ((struct data_buffer *)NULL == pdata_buffer) { + SAM("ERROR: pdata_buffer is NULL\n"); + mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); + return -EFAULT; + } + if (NULL == pdata_buffer->pgo) { + SAM("ERROR: pdata_buffer->pgo is NULL\n"); + mutex_unlock(&easycapdc60_dongle[kd].mutex_audio); + return -EFAULT; + } + if (NULL == 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 %li bytes\n", (long int) 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 (0 != 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; +} +/*****************************************************************************/ + -- 1.7.3.4 --------------------------------------------------------------------- Intel Israel (74) Limited This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). 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