diff options
Diffstat (limited to 'drivers/media/usb/usbtv')
| -rw-r--r-- | drivers/media/usb/usbtv/usbtv-audio.c | 33 | ||||
| -rw-r--r-- | drivers/media/usb/usbtv/usbtv-core.c | 40 | ||||
| -rw-r--r-- | drivers/media/usb/usbtv/usbtv-video.c | 61 | ||||
| -rw-r--r-- | drivers/media/usb/usbtv/usbtv.h | 22 |
4 files changed, 116 insertions, 40 deletions
diff --git a/drivers/media/usb/usbtv/usbtv-audio.c b/drivers/media/usb/usbtv/usbtv-audio.c index 78c12d22dfbb..1965ff1b1f12 100644 --- a/drivers/media/usb/usbtv/usbtv-audio.c +++ b/drivers/media/usb/usbtv/usbtv-audio.c @@ -1,13 +1,6 @@ /* - * Fushicai USBTV007 Audio-Video Grabber Driver - * - * Product web site: - * http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html - * * Copyright (c) 2013 Federico Simoncelli * All rights reserved. - * No physical hardware was harmed running Windows during the - * reverse-engineering activity * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -20,6 +13,27 @@ * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL"). + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/* + * Fushicai USBTV007 Audio-Video Grabber Driver + * + * Product web site: + * http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html + * + * No physical hardware was harmed running Windows during the + * reverse-engineering activity */ #include <sound/core.h> @@ -278,6 +292,9 @@ static void snd_usbtv_trigger(struct work_struct *work) { struct usbtv *chip = container_of(work, struct usbtv, snd_trigger); + if (!chip->snd) + return; + if (atomic_read(&chip->snd_stream)) usbtv_audio_start(chip); else @@ -378,6 +395,8 @@ err: void usbtv_audio_free(struct usbtv *usbtv) { + cancel_work_sync(&usbtv->snd_trigger); + if (usbtv->snd && usbtv->udev) { snd_card_free(usbtv->snd); usbtv->snd = NULL; diff --git a/drivers/media/usb/usbtv/usbtv-core.c b/drivers/media/usb/usbtv/usbtv-core.c index 29428bef272c..dc76fd41e00f 100644 --- a/drivers/media/usb/usbtv/usbtv-core.c +++ b/drivers/media/usb/usbtv/usbtv-core.c @@ -1,19 +1,6 @@ /* - * Fushicai USBTV007 Audio-Video Grabber Driver - * - * Product web site: - * http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html - * - * Following LWN articles were very useful in construction of this driver: - * Video4Linux2 API series: http://lwn.net/Articles/203924/ - * videobuf2 API explanation: http://lwn.net/Articles/447435/ - * Thanks go to Jonathan Corbet for providing this quality documentation. - * He is awesome. - * * Copyright (c) 2013 Lubomir Rintel * All rights reserved. - * No physical hardware was harmed running Windows during the - * reverse-engineering activity * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -26,6 +13,33 @@ * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL"). + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/* + * Fushicai USBTV007 Audio-Video Grabber Driver + * + * Product web site: + * http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html + * + * Following LWN articles were very useful in construction of this driver: + * Video4Linux2 API series: http://lwn.net/Articles/203924/ + * videobuf2 API explanation: http://lwn.net/Articles/447435/ + * Thanks go to Jonathan Corbet for providing this quality documentation. + * He is awesome. + * + * No physical hardware was harmed running Windows during the + * reverse-engineering activity */ #include "usbtv.h" diff --git a/drivers/media/usb/usbtv/usbtv-video.c b/drivers/media/usb/usbtv/usbtv-video.c index f6cfad46547e..2a089756c988 100644 --- a/drivers/media/usb/usbtv/usbtv-video.c +++ b/drivers/media/usb/usbtv/usbtv-video.c @@ -1,19 +1,6 @@ /* - * Fushicai USBTV007 Audio-Video Grabber Driver - * - * Product web site: - * http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html - * - * Following LWN articles were very useful in construction of this driver: - * Video4Linux2 API series: http://lwn.net/Articles/203924/ - * videobuf2 API explanation: http://lwn.net/Articles/447435/ - * Thanks go to Jonathan Corbet for providing this quality documentation. - * He is awesome. - * * Copyright (c) 2013 Lubomir Rintel * All rights reserved. - * No physical hardware was harmed running Windows during the - * reverse-engineering activity * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -26,6 +13,33 @@ * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL"). + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/* + * Fushicai USBTV007 Audio-Video Grabber Driver + * + * Product web site: + * http://www.fushicai.com/products_detail/&productId=d05449ee-b690-42f9-a661-aa7353894bed.html + * + * Following LWN articles were very useful in construction of this driver: + * Video4Linux2 API series: http://lwn.net/Articles/203924/ + * videobuf2 API explanation: http://lwn.net/Articles/447435/ + * Thanks go to Jonathan Corbet for providing this quality documentation. + * He is awesome. + * + * No physical hardware was harmed running Windows during the + * reverse-engineering activity */ #include <media/v4l2-ioctl.h> @@ -251,8 +265,23 @@ static int usbtv_setup_capture(struct usbtv *usbtv) /* Copy data from chunk into a frame buffer, deinterlacing the data * into every second line. Unfortunately, they don't align nicely into * 720 pixel lines, as the chunk is 240 words long, which is 480 pixels. - * Therefore, we break down the chunk into two halves before copyting, - * so that we can interleave a line if needed. */ + * Therefore, we break down the chunk into two halves before copying, + * so that we can interleave a line if needed. + * + * Each "chunk" is 240 words; a word in this context equals 4 bytes. + * Image format is YUYV/YUV 4:2:2, consisting of Y Cr Y Cb, defining two + * pixels, the Cr and Cb shared between the two pixels, but each having + * separate Y values. Thus, the 240 words equal 480 pixels. It therefore, + * takes 1.5 chunks to make a 720 pixel-wide line for the frame. + * The image is interlaced, so there is a "scan" of odd lines, followed + * by "scan" of even numbered lines. + * + * Following code is writing the chunks in correct sequence, skipping + * the rows based on "odd" value. + * line 1: chunk[0][ 0..479] chunk[0][480..959] chunk[1][ 0..479] + * line 3: chunk[1][480..959] chunk[2][ 0..479] chunk[2][480..959] + * ...etc. + */ static void usbtv_chunk_to_vbuf(u32 *frame, __be32 *src, int chunk_no, int odd) { int half; @@ -608,7 +637,7 @@ static struct v4l2_file_operations usbtv_fops = { static int usbtv_queue_setup(struct vb2_queue *vq, unsigned int *nbuffers, - unsigned int *nplanes, unsigned int sizes[], void *alloc_ctxs[]) + unsigned int *nplanes, unsigned int sizes[], struct device *alloc_devs[]) { struct usbtv *usbtv = vb2_get_drv_priv(vq); unsigned size = USBTV_CHUNK * usbtv->n_chunks * 2 * sizeof(u32); diff --git a/drivers/media/usb/usbtv/usbtv.h b/drivers/media/usb/usbtv/usbtv.h index 161b38d5cfa0..011f9fdc77a9 100644 --- a/drivers/media/usb/usbtv/usbtv.h +++ b/drivers/media/usb/usbtv/usbtv.h @@ -1,10 +1,6 @@ /* - * Fushicai USBTV007 Audio-Video Grabber Driver - * * Copyright (c) 2013 Lubomir Rintel * All rights reserved. - * No physical hardware was harmed running Windows during the - * reverse-engineering activity * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -17,6 +13,24 @@ * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL"). + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +/* + * Fushicai USBTV007 Audio-Video Grabber Driver + * + * No physical hardware was harmed running Windows during the + * reverse-engineering activity */ #include <linux/module.h> |